CN119541939A

CN119541939A - Power cords, electrical connection equipment and electrical equipment

Info

Publication number: CN119541939A
Application number: CN202311621354.3A
Authority: CN
Inventors: 王华科; 牛力伟; 谭爱国
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2023-08-31
Filing date: 2023-11-29
Publication date: 2025-02-28
Also published as: CN221406864U; WO2025044109A1

Abstract

The application discloses a power line, electric connection equipment and electric equipment, wherein a first current carrying line of the power line is wrapped with a first shielding conductor structure, a second current carrying line is wrapped with a second shielding conductor structure, a first detection section formed by a part of the first shielding conductor structure between a first end and a third end, a second detection section formed by a part of the first shielding conductor structure between the third end and a second end, a third detection section formed by a part of the second shielding conductor structure between a fourth end and a sixth end, a fourth detection section formed by a part of the second shielding conductor structure between the sixth end and a fifth detection section formed by a jumper wire between the third end and the sixth end, and by utilizing the five detection sections to cooperate with a detection protection device, whether leakage current or open circuit occurs can be detected at different positions of the power line, so that the safety of the electric equipment is improved.

Description

Power line, electric connection equipment and electric equipment

The application claims priority from China patent application No. 202311122754X, application name "power line, detection protection device of power line, electric connection device and electric equipment", application No. 2023223725448, application name "detection protection device of power line, electric connection device and electric equipment" filed on 8/31 of 2023, the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of electronic circuits, and in particular, to a power cord, an electrical connection device, and an electrical apparatus.

Background

The leakage current detection circuit breaker Lkg iruit ttor Intrruptr, LI is a power supply connection device for an electrical appliance, can detect leakage current of a power line group through a leakage current detection line, and cuts off power supply connection of the electrical appliance when a certain leakage current is detected, so that use safety is ensured.

In the existing leakage current detection circuit breaker, a leakage current detection line is generally formed by adopting a shielding wire, when the leakage current detection line of a live wire or a zero line in a power line is broken, an electric appliance can still supply power and output, and at the moment, the electric appliance may have potential safety hazards, but the leakage current detection circuit breaker of the related technology cannot reflect the situation of the leakage current detection line.

Disclosure of Invention

The embodiment of the application provides a power line, electric connection equipment and electric equipment, which can perfectly detect the leakage current and open circuit condition of a shielding conductor structure.

In a first aspect, an embodiment of the present application provides a power line, including a first current carrying line and a second current carrying line, the power line being close to an input end for connection with a detection protection device and close to an output end for connection with a load device, the power line further including:

A first shielding conductor structure surrounding the first current carrying wire, the first shielding conductor structure including a first end proximate to the input end, a second end proximate to the output end, and a third end between the first end and the second end;

A second shielding conductor structure surrounding the second current carrying line, the second shielding conductor structure including a fourth end proximate the input end, a fifth end proximate the output end, and a sixth end between the fourth end and the fifth end;

the first lead is used for connecting the first end and the detection protection device;

The second lead is used for connecting the fourth end and the detection protection device;

A first return line connecting the second end and the detection protection device;

a second return line connecting the fifth end and the detection protection device;

And the jumper wire is used for connecting the third end and the sixth end.

In some embodiments, a first shielding conductor structure between the first end and the third end forms a first detection segment, a first shielding conductor structure between the third end and the second end forms a second detection segment, a second shielding conductor structure between the fourth end and the sixth end forms a third detection segment, a second shielding conductor structure between the sixth end and the fifth end forms a fourth detection segment, and the third end and the sixth end form a fifth detection segment through the patch cord.

In some embodiments, the number of patch cords is N, the first end and the second end have N third ends therebetween, the fourth end and the fifth end have N sixth ends therebetween to form N fifth detection segments, and N is a positive integer greater than 1.

In some embodiments, the patch cord includes a first metal conductor leading from the third end and a second metal conductor leading from the sixth end, the first metal conductor being connected to the second metal conductor;

Or the patch cord includes a first metal conductor leading from the third end, the first metal conductor being connected to the sixth end;

or the jumper wire comprises a second metal conductor led out from the sixth end, and the first metal conductor is connected to the third end.

In some embodiments, the first shielding conductor structure includes a first shielding component surrounding the first current-carrying wire, the second shielding conductor structure includes a second shielding component surrounding the second current-carrying wire, at least a portion of the first shielding component is drawn out as the first metal conductor at the third end, and at least a portion of the second shielding component is drawn out as the second metal conductor at the sixth end.

In some embodiments, the first shielding component comprises a first shielding layer and a second shielding layer, the first shielding layer wraps the second shielding layer, the second shielding component comprises a third shielding layer and a fourth shielding layer, the third shielding layer wraps the fourth shielding layer, a part of the first shielding layer is led out from the third end to serve as the first metal conductor, and a part of the third shielding layer is led out from the sixth end to serve as the second metal conductor.

In some embodiments, the first shield conductor structure includes a fifth lead that leads from a first end of the first shield conductor structure to form the first lead, and the second shield conductor structure includes a sixth lead that leads from a fourth end of the second shield conductor structure to form the second lead;

At least one of the first return line and the fifth wire is disposed between the first shielding layer and the second shielding layer, and at least one of the second return line and the sixth wire is disposed between the third shielding layer and the fourth shielding layer.

In some embodiments, the first shielding component is a fifth shielding layer, the second shielding component is a sixth shielding layer, a portion of the fifth shielding layer is led out at the third end as the first metal conductor, and a portion of the sixth shielding layer is led out at the sixth end as the second metal conductor.

In some embodiments, the first shield conductor structure includes a third wire, the second shield conductor structure includes a fourth wire, the third wire extends from the first end to the second end, the fourth wire extends from the fourth end to the fifth end, at least a portion of the third wire is drawn out at the third end as the first metal conductor, and at least a portion of the fourth wire is drawn out at the sixth end as the second metal conductor.

In some embodiments, the jumper wire is a third metal conductor, one end of the third metal conductor is connected to the third end, and the other end is connected to the sixth end.

In some embodiments, the first shield conductor structure includes a fifth wire leading from a first end of the first shield conductor structure forming the first wire, and the second shield conductor structure includes a sixth wire leading from a fourth end of the second shield conductor structure forming the second wire.

In some embodiments, the first shielding conductor structure includes a first shielding component encasing the first current-carrying wire, the second shielding conductor structure includes a second shielding component encasing the second current-carrying wire, the fifth wire is in conductive contact with the first shielding component, and the sixth wire is in conductive contact with the second shielding component.

In some embodiments, the first shielding assembly includes a first shielding layer and a second shielding layer, the first shielding layer encasing the second shielding layer, the second shielding assembly includes a third shielding layer encasing the fourth shielding layer, and a fourth shielding layer;

In some embodiments, the first return line and the second return line are wrapped with an insulating sheath, the first return line is connected to the first shielding layer, the second shielding layer, or the fifth wire near the output end, and the second return line is connected to the third shielding layer, the fourth shielding layer, or the sixth wire near the output end.

In some embodiments, the first return line is derived from a portion of the fifth wire being wrapped with an insulating sheath and/or the second return line is derived from a portion of the sixth wire being wrapped with an insulating sheath.

In some embodiments, the first, second, third, or fourth shielding layer is one of a metallic material, a semiconductor material, and a conductive composite material, and the shape of the first, second, third, or fourth shielding layer is one of annular, mesh, spiral.

In some embodiments, the first and third shield layers are copper mesh and the second and fourth shield layers are aluminum foil.

In some embodiments, the first shielding assembly further comprises a first cover film that surrounds the first shielding layer, and the second shielding assembly further comprises a second cover film that surrounds the third shielding layer.

In some embodiments, the first coating film has an insulator on the outside and a conductor on the inside to encapsulate the first shielding layer, and the second coating film has an insulator on the outside and a conductor on the inside to encapsulate the third shielding layer.

In some embodiments, the first current carrying line is surrounded by a first insulating layer, the first shielding conductor structure is surrounded by the first insulating layer, the second current carrying line is surrounded by a second insulating layer, and the second shielding conductor structure is surrounded by the second insulating layer.

In some embodiments, the outer side of the first shielding conductor structure is wrapped with a third insulating layer, and/or the outer side of the second shielding conductor structure is wrapped with a fourth insulating layer, and the power cord further comprises an outer insulating layer wrapping the third insulating layer and/or the fourth insulating layer.

In some embodiments, a filling space is left between the outer insulating layer and the third and fourth insulating layers, and the first and second return lines are disposed in the filling space.

In a second aspect, an embodiment of the present application provides an electrical connection apparatus, including a housing, a detection protection device disposed inside the housing, and the power cord according to the first aspect, where the first end and the fourth end are located inside the housing, and the third end and the sixth end are located at a connection portion between the power cord and the housing.

In a third aspect, an embodiment of the present application provides an electrical connection device, including a housing, a detection protection device disposed inside the housing, and the power cord according to the first aspect, where the first end and the fourth end are located inside the housing, and the third end and the sixth end are located at a connection portion between the power cord and the load device.

In a fourth aspect, an embodiment of the present application provides an electrical connection device, including a housing, a detection protection device disposed inside the housing, and the power cord of the first aspect, the first end and the fourth end being located inside the housing, and the third end and the sixth end being located between the housing and the load device.

In some embodiments, the detection protection device comprises:

the switch module is used for controlling the electric power connection between the input end and the output end of the power line;

The driving module is connected with the first end through the first lead wire, the second end through the first return wire, the fourth end through the second lead wire and the fifth end through the second return wire respectively, and is used for controlling the switch module to disconnect the electric power connection between the input end and the output end of the power line under the condition that the first shielding conductor structure and/or the second shielding conductor structure detects leakage current or is open.

In a fifth aspect, an embodiment of the present application provides a powered device, including a load device and the electrical connection device of the second, third or fourth aspect, where an output end of the power cord is connected to the load device.

The power line, the electric connection device and the electric equipment have the advantages that the power line is provided with the first shielding conductor structure and the second shielding conductor structure, the first shielding conductor structure and the second shielding conductor structure wrap the first current carrying line and the second current carrying line respectively, the first shielding conductor structure sequentially comprises a first end, a third end and a second end from the input end to the output end, the second shielding conductor structure sequentially comprises a fourth end, a sixth end and a fifth end from the input end to the output end, the first end is connected to the detection protection device through a first lead, the fourth end is connected to the detection protection device through a second lead, the second end is connected to the detection protection device through a first return line, the fifth end is connected to the detection protection device through a second return line, and a patch cord is arranged between the third end and the sixth end, therefore five detection sections can be divided, the first detection section is formed by the part of the first shielding conductor structure between the first end and the third end, the second detection section is formed by the part of the first shielding conductor structure between the third end and the second end, the second detection section is formed by the part of the second shielding conductor structure between the third end and the fourth end, the fourth detection section is located between the fourth detection section and the fourth end and the fifth detection section is formed by the fifth detection section, and the detection section is not located between the fourth detection section and the fourth end is formed by the fourth detection section, and the detection section is located between the fourth detection section and the fourth detection section is located between the fourth detection section and the detection section is or the fifth detection section is located between the detection section and the detection section is not located between the fifth detection section and the fifth detection section.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

Fig. 1 is a schematic diagram of connection relation between a first shielding conductor structure and a second shielding conductor structure and a detection protection device provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a fifth detection segment with N segments between a first shielding conductor structure and a second shielding conductor structure provided by an embodiment of the present application;

FIG. 3a is a schematic diagram of a connection through a first metal conductor and a second metal conductor provided by an embodiment of the present application;

FIG. 3b is a schematic diagram of a first metal conductor of a patch cord according to an embodiment of the present application connected to a sixth terminal;

FIG. 3c is a schematic diagram of a second metal conductor of a patch cord according to an embodiment of the present application connected to a third terminal;

FIG. 3d is a schematic diagram of a jumper wire for connecting a third end and a sixth end with additional wires according to an embodiment of the present application;

FIG. 4a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of example one provided by an embodiment of the present application;

FIG. 4b is a cross-sectional view of a fifth detection segment of example one provided by an embodiment of the present application;

FIG. 5a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of example two provided by an embodiment of the present application;

FIG. 5b is a cross-sectional view of a fifth detection segment of example two provided by an embodiment of the present application;

FIG. 6a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of example three provided by an embodiment of the present application;

FIG. 6b is a cross-sectional view of a fifth detection segment of example three provided by an embodiment of the present application;

FIG. 7a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of example three provided by an embodiment of the present application;

FIG. 7b is a cross-sectional view of a fifth detection segment of example three provided by an embodiment of the present application;

FIG. 8a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of example three provided by an embodiment of the present application;

FIG. 8b is a cross-sectional view of a fifth detection segment of example three provided by an embodiment of the present application;

FIG. 9a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of example three provided by an embodiment of the present application;

FIG. 9b is a cross-sectional view of a fifth detection segment of example three provided by an embodiment of the present application;

FIG. 10a is a cross-sectional view of a first detection segment and a third detection segment of example four provided by an embodiment of the present application;

FIG. 10b is a cross-sectional view of a second detection segment and a fourth detection segment of example four provided by an embodiment of the present application;

FIG. 10c is a cross-sectional view of a fifth detection segment of example four provided by an embodiment of the present application;

Fig. 11 is a schematic diagram of a housing structure of an electrical connection device according to an embodiment of the present application.

Description of the drawings detection protection device 900, housing 910, power line 920

The first current line 110, the first shielding conductor structure 120, the first end a, the second end b, the third end c, the third conductor 121, the fifth conductor 122, the first shielding layer 123, the second shielding layer 124, the fifth shielding layer 125

First conductive line 130, first return line 140, first insulating layer 150, third insulating layer 160

The second current line 210, the second shielding conductor structure 220, the fourth end d, the fifth end e, the sixth end f, the fourth wire 221, the sixth wire 222, the third shielding layer 223, the fourth shielding layer 224, the sixth shielding layer 225

Second wire 230, second return wire 240, second insulating layer 250, fourth insulating layer 260

Jumper 300, first metal conductor 310, second metal conductor 320, third metal conductor 330

Third current carrying line 400, outer insulation layer 500

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.

In the description of the present application, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.

The leakage current detection circuit breaker, namely the LCDI, is used for coating the live wire or the zero line by using the shielding wire and detecting the leakage current on the live wire or the zero line by using the shielding wire, and if the live wire or the zero line is damaged and the leakage current is transmitted to the shielding wire, the leakage current detection circuit breaker can trigger to disconnect the power connection of the power line. However, when the shielding wire is disconnected, an open circuit is formed between the shielding wire and a detection circuit of the leakage current detection circuit breaker, so that leakage current cannot be detected through the shielding wire, and hidden danger is brought to the electricity safety of the electric appliance.

Based on this, the embodiment of the present application provides a power line, an electrical connection device and an electric device, where the power line is provided with a first shielding conductor structure 120 and a second shielding conductor structure 220, which are respectively wrapped around the first current carrying line 110 and the second current carrying line 210, the first shielding conductor structure 120 sequentially has a first end a, a third end c and a second end b from an input end to an output end, the second shielding conductor structure 220 sequentially has a fourth end d, a sixth end f and a fifth end e from the input end to the output end, the first end a is connected to the detection protection device 900 through a first conducting wire 130, the fourth end d is connected to the detection protection device 900 through a second conducting wire 230, the second end b is connected to the detection protection device 900 through a first return wire 140, the fifth end e is connected to the detection protection device 900 through a second return wire 240, and a patch 300 is provided between the third end c and the sixth end f, so that five detection segments can be divided, respectively, the first detection segment formed by a part between the first shielding conductor structure 120 and the third end a and the third end c is located between the first detection segment, the sixth end f is located between the fourth end and the fourth end c and the fifth end c is formed by the detection segment 220, or the fifth detection segment is located between the fifth end and the fifth end f is located between the detection segment and the fifth end and the fourth end, and the fifth end is formed by the detection segment, and the fifth detection segment is not located between the fifth end and the detection segment and the fifth end and the fifth detection segment structure.

The following describes a power cord, an electrical connection apparatus and an electrical device with reference to the accompanying drawings:

Referring to fig. 1, an embodiment of the present application provides a power line, where an input end of the power line is used for being connected to a detection protection device 900, an output end of the power line is used for being connected to a load device, and the power line includes a first current carrying line 110, a first shielding conductor structure 120, a first conducting wire 130, a first return line 140, a second current carrying line 210, a second shielding conductor structure 220, a second conducting wire 230, a second return line 240, and a jumper 300.

The first shielding conductor structure 120 encloses the first current-carrying line 110, the first shielding conductor structure 120 comprises a first end a close to an input end of the power line, a second end b close to an output end of the power line, and a third end c located between the first end a and the second end b, the second shielding conductor structure 220 encloses the second current-carrying line 210, and the second shielding conductor structure 220 comprises a fourth end d close to the input end of the power line, a fifth end e close to the output end of the power line, and a sixth end f located between the fourth end d and the fifth end e.

It can be understood that the first current-carrying wire 110 and the second current-carrying wire 210 are used for providing working current for load equipment, the first shielding conductor structure 120 is wrapped outside the first current-carrying wire 110, the second shielding conductor structure 220 is wrapped outside the second current-carrying wire 210, and the possible leakage conditions on the first current-carrying wire 110 and the second current-carrying wire 210 can be detected respectively, and signals are transmitted to the detection protection device 900 so as to cut off the power supply, thereby avoiding accidental occurrence of personnel electric shock and improving the safety. In addition, when the power line supplies power to the electric equipment using the two-phase alternating current, one of the two situations can be that the first current-carrying line 110 is a live wire L, the second current-carrying line 120 is a zero wire N, the first current-carrying line 110 is the zero wire N, and the second current-carrying line 120 is the live wire L. When the power line supplies power to the electric equipment using three-phase alternating current, one of three situations can be that the first current carrying line 110 is a live wire L1, the second current carrying line 120 is a zero line N, the first current carrying line 110 is the zero line N, the second current carrying line 120 is the live wire L1, the first current carrying line 110 is the live wire L1, and the second current carrying line 120 is the live wire L2.

The first wire 130 is used for connecting the first terminal a and the detection protection device 900, the second wire 230 is used for connecting the fourth terminal d and the detection protection device 900, the first return wire 140 is used for connecting the second terminal b and the detection protection device 900, the second return wire 240 is used for connecting the fifth terminal e and the detection protection device 900, and the jumper 300 is used for connecting the third terminal c and the sixth terminal f.

By connecting the third end c in the middle of the first shielding conductor structure 120 with the sixth end f of the second shielding conductor structure 220 by means of the patch cord 300, such that there is a point of association between the shielding conductor structures of the first current-carrying wire 110 and the second current-carrying wire 120, the two shielding conductor structures are no longer separated independently, such that the first shielding conductor structure 120 between the first end a and the third end c constitutes a first detection segment, the first shielding conductor structure 120 between the third end c and the second end b constitutes a second detection segment, the second shielding conductor structure 220 between the fourth end d and the sixth end f constitutes a third detection segment, the second shielding conductor structure 220 between the sixth end f and the fifth end e constitutes a fourth detection segment, and the third end c and the sixth end f constitute a fifth detection segment by means of the patch cord 300.

The first end a, the second end b, the fourth end d and the fifth end e are respectively connected to the detection protection device 900, so that the detection protection device 900 can simultaneously perform open-circuit detection on a plurality of different detection paths, for example, a detection path from the first lead 130 to the first end a of the first shielding conductor structure 120, to the third end c of the first shielding conductor structure 120, to the sixth end f of the second shielding conductor structure 220 through the patch cord 300, to the fourth end d of the second shielding conductor structure 220 and to the detection path of the second lead 230, a detection path from the first lead 130 to the first end a of the first shielding conductor structure 120, to the third end c of the first shielding conductor structure 120, to the sixth end f of the second shielding conductor structure 220 through the patch cord 300, to the fifth end e of the second shielding conductor structure 220, and to the detection path from the first return line 140 to the second end b of the first shielding conductor structure 120, to the third end c of the second shielding conductor structure 220 through the patch cord 300, to the fourth end d of the second shielding conductor structure 220, to the fourth end 220 through the patch cord 300, to the fourth end f of the second shielding conductor structure 220, to the fourth end 220, and to the fifth end e of the second return line 240.

It can be appreciated that, in the power cord of this embodiment, the plurality of detection segments formed by the first shielding conductor structure 120 and the second shielding conductor structure 220 can be combined, so that a shielding network with a plurality of different detection paths can be constructed, the feasibility and flexibility of the power cord for detecting electric leakage and detecting open circuit of the shielding structure are greatly enriched, and the power supply safety of the power cord can be improved.

Referring to fig. 2, in another embodiment of the present application, the number of patch cords 300 is N groups, N third ends c are provided between the first end a and the second end b, N sixth ends f are provided between the fourth end d and the fifth end e, so as to form N fifth detection segments, and N is a positive integer greater than 1.

Compared with the embodiment shown in fig. 1, in this embodiment, by providing multiple groups of jumper wires 300, multiple correlation points exist between the shielding conductor structures of the first current-carrying wire 110 and the second current-carrying wire 120, so that more detection segments can be formed, for example, a detection segment formed between two adjacent third ends c on the first shielding conductor structure 120 and a detection segment formed between two adjacent sixth ends f on the second shielding conductor structure 220, further more detection paths can be combined, so that feasibility and flexibility of open-circuit detection on the shielding structure of the power line are greatly enriched, and power supply safety of the power line can be improved.

Referring to fig. 3a, in some embodiments of the present application, in a fifth detection segment, the patch cord 300 includes a first metal conductor 310 led from a third end c and a second metal conductor 320 led from a sixth end f, the first metal conductor 310 being connected to the second metal conductor 320. That is, in the present embodiment, the patch cord 300 is formed by connecting two portions of metal conductors, and an electrical connection is achieved between the third end c of the first shielding conductor structure 120 and the sixth end f of the second shielding conductor structure 220. It is understood that the first metal conductor 310 may be a part of the first shielding conductor structure 120, that is, the first metal conductor 310 may be a part of the first shielding conductor structure 120 extracted at the third end c, in addition, the first metal conductor 310 may be an additionally disposed metal conductor, and similarly, the second metal conductor 320 may be a part of the second shielding conductor structure 220, that is, the second metal conductor 320 may be a part of the second shielding conductor structure 220 extracted at the sixth end f, and in addition, the second metal conductor 320 may be an additionally disposed metal conductor.

Referring to fig. 3b, in another embodiment of the present application different from fig. 3a, in a fifth detection segment, the patch cord 300 includes a first metal conductor 310 led from a third end c, the first metal conductor 310 being connected to a sixth end f. I.e. in comparison with the embodiment shown in fig. 3a, the second metal conductor 320 does not have to be provided in fig. 3 b.

Referring to fig. 3c, in another embodiment of the present application, which is different from fig. 3a, in a fifth detection segment, the patch cord 300 includes a second metal conductor 320 led from a sixth end f, and the second metal conductor 320 is connected to the sixth end f. I.e. in comparison with the embodiment shown in fig. 3a, the first metal conductor 310 does not need to be provided in fig. 3 b.

Referring to fig. 3d, in another embodiment of the present application different from fig. 3a, in the fifth detection segment, the patch cord 300 includes a third metal conductor 330, and two ends of the third metal conductor 330 are connected to a third end c and a sixth end f, respectively. That is, the jumper 300 employs the third metal conductor 330 additionally provided, and does not employ a portion extracted from the first shielding conductor structure 120 at the third end c, nor does it employ a portion extracted from the second shielding conductor structure 220 at the sixth end f.

In some embodiments of the present application, the first shielding conductor structure 120 includes a first shielding element that wraps around the first current-carrying line 110, the second shielding conductor structure 220 includes a second shielding element that wraps around the second current-carrying line 210, at least a portion of the first shielding element is extracted as the first metal conductor 310 at the third end c, and at least a portion of the second shielding element is extracted as the second metal conductor 320 at the sixth end f.

In the patch cord 300 of this embodiment, at least a portion of the first metal conductor 310 is formed by extracting at the third end c, and at least a portion of the second metal conductor 320 is formed by extracting at the sixth end f, which is equivalent to extracting a portion of the first shielding component and a portion of the second shielding component to connect to form the patch cord 300, so that when the power cord is installed on the electric device, an installer can directly extract the first shielding component wrapped on the outer layer of the first current-carrying cord 110 and the second shielding component wrapped on the outer layer of the second current-carrying cord 210 to connect, and the installation difficulty of the patch cord is reduced. The first shielding component and the second shielding component can be single shielding layers, can be composed of multiple shielding layers, and can be of a structure of composite materials, and the structure is not limited herein.

Referring to fig. 9b and 10b, in some embodiments of the present application, the first shielding assembly includes a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 surrounding the second shielding layer 124, the second shielding assembly includes a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 surrounding the fourth shielding layer 224, a portion of the first shielding layer 123 is drawn out as a first metal conductor 310 at a third end c, and a portion of the third shielding layer 223 is drawn out as a second metal conductor 320 at a sixth end f.

The patch cord 300 of the present embodiment is composed of shielding layers in the first shielding conductor structure 120 and the second shielding conductor structure 220, and a part of the shielding layers in the first shielding conductor structure 120 and the second shielding conductor structure 220 is led out as a first metal conductor 310 and a second metal conductor 320. For example, the first shielding conductor structure 120 has a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 at the outer layer may be used to draw out as the first metal conductor 310, at the position of the third end c, splitting the power line may draw out a portion of the first shielding layer 123 into a wire-shaped first metal conductor 310, and likewise, the second shielding conductor structure 220 has a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 at the outer layer may be used to draw out as the second metal conductor 320, and at the position of the sixth end f, splitting the power line may draw out a portion of the third shielding layer 223 into a wire-shaped second metal conductor 320. In this manner, a portion of the outer shield is routed out as a metal conductor of the patch cord 300, and the inner shield may remain intact, i.e., the second shield 124 and the fourth shield 224 are intact, in accordance with the shield integrity test requirements.

It will be appreciated that the first metal conductor 310 is led out from the first shielding layer 123 and the second metal conductor 320 is led out from the third shielding layer 223, respectively, and according to the foregoing description, it is possible to led out only the first metal conductor 310 from the first shielding layer 123 and connect the first metal conductor 310 to the sixth end f, or it is also possible to led out only the second metal conductor 320 from the third shielding layer 223 and connect the second metal conductor 320 to the third end c.

In some embodiments of the present application, the first shield conductor structure 120 further includes a fifth wire 122, the fifth wire 122 extending from the first end a to the third end c in the first detection segment and being in conductive contact with the first shield conductor structure 120;

It will be appreciated that by providing the fifth wire 122 in the first shielding conductor structure 120 and connecting to the detection protection device 900 via the first wire 130, i.e. in the first shielding conductor structure 120, the fifth wire 122 acts as a carrier for electrical signal transfer in connection with the first wire 130, the fifth wire 122 extends in the first shielding conductor structure 120 from the first end a to the second end b such that the first wire 130 is electrically connected to the first detection section and the second detection section of the first shielding conductor structure 120, whereby electrical signal variations of the first detection section and the second detection section of the first shielding conductor structure 120 can be conducted via the first wire 130.

The second shielding conductor structure 220 further comprises a sixth wire 222, the sixth wire 222 extending from the fourth end d to the sixth end f in the third detection section and being in conductive contact with the second shielding conductor structure 220, and the sixth wire 222 extending from the sixth end f to the fifth end e in the fourth detection section and being in conductive contact with the second shielding conductor structure 220.

It will be appreciated that by providing the sixth wire 222 in the second shielding conductor structure 220 and connecting to the detection protection device 900 via the second wire 230, i.e. in the second shielding conductor structure 220, the sixth wire 222 acts as a carrier for electrical signal transfer in connection with the second wire 230, the sixth wire 222 extends in the second shielding conductor structure 220 from the fourth end d to the fifth end e such that the second wire 230 is electrically conductively connected to the third detection segment and the fourth detection segment in the second shielding conductor structure 220, whereby electrical signal changes of the third detection segment and the fourth detection segment of the second shielding conductor structure 220 can be conducted via the second wire 230.

In some embodiments of the present application, the fifth wire 122 is disposed between the first shielding layer 123 and the second shielding layer 124 in the first detection segment and the second detection segment;

Since the shield layer is used as the jumper wire 300, the third wire 121 and the fourth wire 221 described above are not present in any detection section. In this embodiment, the fifth wire 122 and the sixth wire 222 are long wires extending along the power line 920, and then the fifth wire 122 may be disposed between the first shielding layer 123 and the second shielding layer 124, the fifth wire 122 may be in conductive contact with the first shielding layer 123 and the second shielding layer 124, and the sixth wire 222 may be disposed between the third shielding layer 223 and the fourth shielding layer 224, and the sixth wire 222 may be in conductive contact with the third shielding layer 223 and the fourth shielding layer 224.

Or at least one of the first return line 140 and the fifth wire 122 is disposed between the first shielding layer 123 and the second shielding layer 124, and at least one of the second return line 240 and the sixth wire 222 is disposed between the third shielding layer 223 and the fourth shielding layer 224.

The present example adds the first and second return lines 140 and 240 on the basis of the above example, and the first and second return lines 140 and 240 are covered with an insulating cover, and are insulated from each shielding layer. In this example, the first return line 140, the second return line 240, the fifth wire 122, and the sixth wire 222 are all long wires extending along the power supply line 920. Between the first shield layer 123 and the second shield layer 124, one of the first return line 140 and the fifth wire 122 may be provided alone, or both may be provided between the first shield layer 123 and the second shield layer 124, between the third shield layer 223 and the fourth shield layer 224, one of the second return line 240 and the sixth wire 222 may be provided alone, or both may be provided between the third shield layer 223 and the fourth shield layer 224.

In some embodiments of the present application, the first shielding component is the fifth shielding layer 125, the second shielding component is the sixth shielding layer 225, a portion of the fifth shielding layer 125 is led out as the first metal conductor 310 at the third end c, and a portion of the sixth shielding layer 225 is led out as the second metal conductor 320 at the sixth end f.

In some embodiments of the present application, the first wire 130 extends from the test protector 900 to the first end a and the second wire 230 extends from the test protector 900 to the fourth end d.

In the embodiment using the shielding layer to form the patch cord 300, the first conductive line 130 and the second conductive line 230 are both short conductive lines, one end of the first conductive line 130 is connected to the detection protection device 900, the other end is connected to the first end a, one end of the second conductive line 230 is connected to the detection protection device 900, and the other end is connected to the fourth end d. The use of short wires facilitates the separate attachment of the test protector 900 to the power cord 920 without removing the wire connection test protector 900 from the power cord 920

In some embodiments of the present application, the first and second return lines 140 and 240 are wrapped with an insulating sheath, the first return line 140 is connected to the first or second shielding layer 123 or 124 near the output end, and the second return line 240 is connected to the third or fourth shielding layer 223 or 224 near the output end.

In the embodiment in which the shield layer is used to form the jumper 300, the first wire 130 and the second wire 230 are all short wires, the first return wire 140 extends to the output end of the power wire and is connected to the second end b of the first shield conductor structure 120, the first return wire 140 is connected to the first shield layer 123 or the second shield layer 124 near the output end if the first shield conductor structure is a 120-multilayer shield layer structure, the first return wire 140 is connected to the fifth shield layer 125 near the output end if the first shield conductor structure is a 120-single-layer shield layer structure, a conductive connection can be formed between the first return wire 140 and the second end b by soldering, wire winding, or the like, the second return wire 240 extends to the output end of the power wire and is connected to the fifth end e of the second shield conductor structure 220, the second return wire 240 is connected to the third shield layer 223 or the fourth shield layer 224 near the output end if the second shield conductor structure is a 220-multilayer shield layer structure, the second return wire 240 is connected to the fifth return wire 225 near the output end 240 by soldering, or the like.

In some embodiments of the present application, the first shielding conductor structure 120 includes a third wire 121, in a first detection segment, the third wire 121 extends from the first end a to the third end c and is in conductive contact with the first shielding conductor structure 120, in a second detection segment, the third wire 121 extends from the third end c to the second end b and is in conductive contact with the first shielding conductor structure 120, and the third wire 121 of at least a portion of the first detection segment and/or the second detection segment is drawn out at the third end c as the first metal conductor 310.

It can be appreciated that, by disposing the third conductive wire 121 in the first shielding conductor structure 120 and extracting a portion of the third conductive wire 121 from the third end c as the first metal conductor 310, the first metal conductor 310 and the first shielding conductor structure 120 are integrated, which has the advantages of reliable electrical connection and difficult loosening and falling, and the first metal conductor 310 also has the advantage of convenient molding, and the first metal conductor 310 can be manufactured without complex production steps, thereby being beneficial to simplifying the manufacturing process and reducing the production cost. In addition, the third wire 121 extends from the first end a of the first shielding conductor structure 120 near the input end to the second end b near the output end, so that the third end c can be extracted as the first metal conductor 310 no matter where the third wire 121 is arranged on the first shielding conductor structure 120, when the third wire 121 is extracted from the third end c as the first metal conductor 310, a part between the third end c and the first end a, that is, a part of the third wire 121 in the first detection section, a part between the third end c and the second end b, that is, a part of the third wire 121 in the second detection section, and a part between the third end c and the first end a and a part between the third end c and the second end b, that is, a part of the third wire 121 in the first detection section and a part of the third wire 121 in the second detection section, are extracted at the same time.

In addition, the third wire 121 may be cut at the third end c, and then a portion between the third end c and the first end a may be separately extracted, or a portion between the third end c and the second end b may be separately extracted.

In some embodiments of the present application, the second shielding conductor structure 220 includes a fourth wire 221, in which the fourth wire 221 extends from the fourth end d to the sixth end f and is in conductive contact with the second shielding conductor structure 220, and in which the fourth wire 221 extends from the sixth end f to the fifth end e and is in conductive contact with the second shielding conductor structure 220, and in which at least a portion of the fourth wire 221 in the third and/or fourth detection segment is drawn out at the sixth end f as the second metal conductor 320.

Similarly, by disposing the fourth conductive wire 221 in the second shielding conductor structure 220 and extracting a portion of the fourth conductive wire 221 from the sixth end f to form the second metal conductor 320, the second metal conductor 320 and the second shielding conductor structure 220 are integrated, which has the advantages of reliable electrical connection, and difficult loosening and falling, and the second metal conductor 320 has the advantage of convenient molding, and the second metal conductor 320 can be manufactured without complex production steps, thereby facilitating the simplification of the manufacturing process and the reduction of the production cost. In addition, the fourth wire 221 extends from the fourth end d of the second shielding conductor structure 220 near the input end to the fifth end e near the output end, so that the sixth end f can be extracted as the second metal conductor 320 no matter where the fourth wire 221 is disposed on the second shielding conductor structure 220, and when the fourth wire 221 is extracted from the fourth end d as the second metal conductor 320, either a portion between the sixth end f and the fourth end d, that is, a portion of the fourth wire 221 in the third detection section, or a portion between the sixth end f and the fifth end e, that is, a portion of the fourth wire 221 in the fourth detection section, or both a portion between the sixth end f and the fourth end d and a portion between the sixth end f and the fifth end e, that is, both a portion of the fourth wire 221 in the third detection section and a portion of the fourth wire 221 in the fourth detection section, may be extracted.

Further, the fourth wire 221 may be cut at the sixth end f, and then a portion between the sixth end f and the fourth end d may be separately extracted, or a portion between the sixth end f and the fifth end e may be separately extracted.

In some embodiments of the present application, the first shielding conductor structure 120 further comprises a fifth wire 122, the fifth wire 122 extending from the first end a to the third end c in the first detection segment and being in conductive contact with the first shielding conductor structure 120, and the fifth wire 122 extending from the third end c to the second end b in the second detection segment and being in conductive contact with the first shielding conductor structure 120, the fifth wire 122 being connected to the detection protection device 900 by the first wire 130.

In some embodiments of the present application, the second shielding conductor structure 220 further comprises a sixth wire 222, in the third detection segment, the sixth wire 222 extends from the fourth end d to the sixth end f and is in conductive contact with the second shielding conductor structure 220, in the fourth detection segment, the sixth wire 222 extends from the sixth end f to the fifth end e and is in conductive contact with the second shielding conductor structure 220, the sixth wire 222 is connected to the detection protection device 900 by the second wire 230.

Referring to fig. 4a and 5a, in some embodiments of the present application, a first shielding assembly includes a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 surrounding the second shielding layer 124, the second shielding assembly including a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 surrounding the fourth shielding layer 224;

The first shielding conductor structure 120 may have a double-layer structure or a multi-layer structure, wherein at least a first shielding layer 123 and a second shielding layer 124 are included, the first shielding layer 123 and the second shielding layer 124 are tightly attached to each other, at least one wire may be disposed between the two shielding layers, the second shielding conductor structure 220 may have a double-layer structure or a multi-layer structure, at least a third shielding layer 223 and a fourth shielding layer 224 are included, the third shielding layer 223 and the fourth shielding layer 224 are tightly attached to each other, and at least one wire may be disposed between the two shielding layers. The double-layer shielding layer structure ensures that the lead can be better fixed between the two layers of shielding layers, is convenient for fixing the wire in the production process, and also avoids the displacement caused by loosening of the wire in the transportation or installation process. Different power line structures can be formed by matching the double-layer shielding layer structure with different wires.

For example, at least one of the third and fifth wires 121 and 122 is disposed between the first and second shield layers 123 and 124 in the first and second detection segments, and at least one of the fourth and sixth wires 221 and 222 is disposed between the third and fourth shield layers 223 and 224 in the third and fourth detection segments;

The third wire 121, the fourth wire 221, the fifth wire 122, and the sixth wire 222 are wires without insulating covers, the third wire 121 and the fifth wire 122 are in conductive contact with the first shielding layer 123 and/or the second shielding layer 124, and the fourth wire 221 and the sixth wire 222 are in conductive contact with the third shielding layer 223 and/or the fourth shielding layer 224. In this example, the third wire 121, the fourth wire 221, the fifth wire 122, and the sixth wire 222 are long wires extending along the power supply wire 920, where the third wire 121 may be disposed between the first shielding layer 123 and the second shielding layer 124 alone, the fifth wire 122 may be disposed between the first shielding layer 123 and the second shielding layer 124 alone, the third wire 121 and the fifth wire 122 may be disposed between the first shielding layer 123 and the second shielding layer 124 together, the fourth wire 221 may be disposed between the third shielding layer 223 and the fourth shielding layer alone, the sixth wire 222 may be disposed between the third shielding layer 223 and the fourth shielding layer alone, and the fourth wire 221 and the sixth wire 222 may be disposed between the third shielding layer 223 and the fourth shielding layer together.

For another example, at least one of the first, third and fifth return lines 140, 121 and 122 is disposed between the first and second shielding layers 123 and 124, and at least one of the second, fourth and sixth return lines 240, 221 and 222 is disposed between the third and fourth shielding layers 223 and 224.

The present example adds the first and second return lines 140 and 240 on the basis of the above example, and the first and second return lines 140 and 240 are covered with an insulating cover, and are insulated from each shielding layer. In this example, the first return line 140, the second return line 240, the third conductor 121, the fourth conductor 221, the fifth conductor 122, and the sixth conductor 222 are long conductors extending along the power supply line 920. Between the first shield layer 123 and the second shield layer 124, one of the first return line 140, the third wire 121, and the fifth wire 122 may be provided alone, two of the three may be provided, all of the three may be provided between the first shield layer 123 and the second shield layer 124, one of the second return line 240, the fourth wire 221, and the sixth wire 222 may be provided alone, two of the three may be provided, and all of the three may be provided between the third shield layer 223 and the fourth shield layer 224.

Referring to fig. 6a, in some embodiments of the present application, the first shielding component is a fifth shielding layer 125, the second shielding component is a sixth shielding layer 225, the third wire 121 and the fifth wire 122 are closely attached to the same side or different sides of the fifth shielding layer 125 in the first detection section and the second detection section, and the fourth wire 221 and the sixth wire 222 are closely attached to the same side or different sides of the sixth shielding layer 225 in the third detection section and the fourth detection section.

The first shielding conductor structure 120 and the second shielding conductor structure 220 adopt a single shielding layer structure, and the single shielding layer can be a shielding layer formed by a single material or a shielding layer formed by combining a plurality of materials into a layer which is not easy to separate. The outer side and the inner side of the fifth shielding layer 125 are conductive, so that the outer side and the inner side of the fifth shielding layer 125 can be closely contacted with the third conductive line 121 and the fifth conductive line 122, and the outer side and the inner side of the sixth shielding layer 225 are conductive, so that the outer side and the inner side of the sixth shielding layer 225 can be closely contacted with the fourth conductive line 221 and the sixth conductive line 222.

For example, the third wire 121 and the fifth wire 122 are provided on the outer side surface of the fifth shield layer 125, or the third wire 121 and the fifth wire 122 are provided on the inner side surface of the fifth shield layer 125, or the third wire 121 and the fifth wire 122 are provided on both side surfaces of the fifth shield layer 125, respectively. The fourth conductive line 221 and the sixth conductive line 222 are provided on the outer side surface of the sixth shield layer 225, or the fourth conductive line 221 and the sixth conductive line 222 are provided on the inner side surface of the sixth shield layer 225, or the fourth conductive line 221 and the sixth conductive line 222 are provided on both side surfaces of the sixth shield layer 225, respectively.

In this embodiment, the first wire 130 and the second wire 230 are both short wires, one end of the first wire 130 is connected to the detection protection device 900, the other end is connected to the first end a, one end of the second wire 230 is connected to the detection protection device 900, and the other end is connected to the fourth end d. The use of short wires facilitates the separate attachment of the test protector 900 to the power cord 920 without removing the wire connection test protector 900 from the power cord 920.

In some embodiments of the present application, the first shielding conductor structure 120 further includes a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 encasing the second shielding layer 124, the second shielding conductor structure 220 further includes a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 encasing the fourth shielding layer 224;

For example, in the first and second detection segments, the third wire 121 is disposed between the first and second shield layers 123 and 124, and in the third and fourth detection segments, the fourth wire 221 is disposed between the third and fourth shield layers 223 and 224;

The third wire 121 and the fourth wire 221 are wires without insulating covers, the third wire 121 is in conductive contact with the first shielding layer 123 and the second shielding layer 124, and the fourth wire 221 is in conductive contact with the third shielding layer 223 and the fourth shielding layer 224. In this example, the third conductive line 121 and the fourth conductive line 221 are long conductive lines extending along the power line 920, wherein the third conductive line 121 may be disposed between the first shielding layer 123 and the second shielding layer 124 alone or the fourth conductive line 221 may be disposed between the third shielding layer 223 and the fourth shielding layer alone.

For another example, at least one of the first return line 140 and the third wire 121 is disposed between the first shielding layer 123 and the second shielding layer 124, and at least one of the second return line 240 and the fourth wire 221 is disposed between the third shielding layer 223 and the fourth shielding layer 224.

The present example adds the first and second return lines 140 and 240 on the basis of the above example, and the first and second return lines 140 and 240 are covered with an insulating cover, and are insulated from each shielding layer. In this example, the first return line 140, the second return line 240, the third conductive line 121, and the fourth conductive line 221 are long conductive lines extending along the power supply line 920. Between the first shield layer 123 and the second shield layer 124, one of the first return line 140 and the third wire 121 may be provided alone, both may be provided between the first shield layer 123 and the second shield layer 124, between the third shield layer 223 and the fourth shield layer 224, one of the second return line 240 and the fourth wire 221 may be provided alone, both may be provided between the third shield layer 223 and the fourth shield layer 224.

In some embodiments of the present application, the first shielding conductor structure 120 is a fifth shielding layer 125, the second shielding conductor structure 220 is a sixth shielding layer 225, the third wire 121 is closely attached to the outer side or the inner side of the fifth shielding layer 125 in the first detection segment and the second detection segment, and the fourth wire 221 is closely attached to the outer side or the inner side of the sixth shielding layer 225 in the third detection segment and the fourth detection segment.

The first shielding conductor structure 120 and the second shielding conductor structure 220 adopt a single shielding layer structure, and the single shielding layer can be a shielding layer formed by a single material or a shielding layer formed by combining a plurality of materials into a layer which is not easy to separate. The outer side and the inner side of the fifth shielding layer 125 are conductive, so that one of the outer side and the inner side of the fifth shielding layer 125 is closely attached with the third conductive wire 121, and the outer side and the inner side of the sixth shielding layer 225 are conductive, so that one of the outer side and the inner side of the sixth shielding layer 225 is closely attached with the fourth conductive wire 221.

For example, the third conductive line 121 is provided on the outer side surface of the fifth shield layer 125, or the third conductive line 121 is provided on the inner side surface of the fifth shield layer 125. The fourth conductive line 221 is provided on the outer side surface of the sixth shielding layer 225, or the fourth conductive line 221 is provided on the inner side surface of the sixth shielding layer 225.

In some embodiments of the present application, the jumper 300 is a third metal conductor 330, and one end of the third metal conductor 330 is connected to the third end c, and the other end is connected to the sixth end f.

The patch cord 300 in this embodiment is a single metal wire or a plurality of metal wires combined to form a single metal conductor, and two ends of the third metal conductor 330 are connected to the third end c of the first shielding conductor structure 120 and the sixth end f of the second shielding conductor structure 220, respectively. In this case, it is not necessary to provide the third wire 121 and the fourth wire 221 in advance in the power line, and when it is necessary to connect the third terminal c and the sixth terminal f, the connection can be directly made using the additional third metal conductor 330 without drawing out a part of the wire or a part of the shielding layer in the power line.

In some embodiments of the present application, the first shielding conductor structure 120 further comprises a fifth wire 122, the fifth wire 122 extending from the first end a to the third end c in the first detection segment and being in conductive contact with the first shielding conductor structure 120, the fifth wire 122 extending from the third end c to the second end b in the second detection segment and being in conductive contact with the first shielding conductor structure 120, the fifth wire 122 being connected to the detection protection device 900 by the first wire 130;

The second shielding conductor structure 220 further comprises a sixth wire 222, in a third detection segment, the sixth wire 222 extending from the fourth end d to the sixth end f and being in conductive contact with the second shielding conductor structure 220, in a fourth detection segment, the sixth wire 222 extending from the sixth end f to the fifth end e and being in conductive contact with the second shielding conductor structure 220, the sixth wire 222 being connected to the detection protection device 900 by means of the second wire 230.

For example, in the first and second detection segments, the fifth wire 122 is disposed between the first and second shield layers 123 and 124, and in the third and fourth detection segments, the sixth wire 222 is disposed between the third and fourth shield layers 223 and 224;

Since the third metal conductor 330 is used as the jumper 300, the third wire 121 and the fourth wire 221 described above are not present in any detection section. In this embodiment, the fifth wire 122 and the sixth wire 222 are long wires extending along the power line 920, and then the fifth wire 122 may be disposed between the first shielding layer 123 and the second shielding layer 124, the fifth wire 122 may be in conductive contact with the first shielding layer 123 and the second shielding layer 124, and the sixth wire 222 may be disposed between the third shielding layer 223 and the fourth shielding layer 224, and the sixth wire 222 may be in conductive contact with the third shielding layer 223 and the fourth shielding layer 224.

In some embodiments of the present application, the first shielding conductor structure 120 is a fifth shielding layer 125, the second shielding conductor structure 220 is a sixth shielding layer 225, the fifth wire 122 is closely attached to the outer side or the inner side of the fifth shielding layer 125 in the first detection segment and the second detection segment, and the sixth wire 222 is closely attached to the outer side or the inner side of the sixth shielding layer 225 in the third detection segment and the fourth detection segment.

The first shielding conductor structure 120 and the second shielding conductor structure 220 adopt a single shielding layer structure, and the single shielding layer can be a shielding layer formed by a single material or a shielding layer formed by combining a plurality of materials into a layer which is not easy to separate. The outer side and the inner side of the fifth shielding layer 125 are conductive, so one of the outer side and the inner side of the fifth shielding layer 125 is closely attached with the fifth wire 122, and the outer side and the inner side of the sixth shielding layer 225 are conductive, so one of the outer side and the inner side of the sixth shielding layer 225 is closely attached with the sixth wire 222.

For example, the fifth wire 122 is provided on the outer side surface of the fifth shield layer 125, or the fifth wire 122 is provided on the inner side surface of the fifth shield layer 125. The sixth conductive line 222 is provided on the outer side surface of the sixth shielding layer 225, or the sixth conductive line 222 is provided on the inner side surface of the sixth shielding layer 225.

In some embodiments of the present application, a portion of the fifth wire 122 is routed from the first end a of the first shield conductor structure 120 to form the first wire 130, and a portion of the sixth wire 222 is routed from the fourth end d of the second shield conductor structure 220 to form the second wire 230.

The first wire 130 and the fifth wire 122 in the present embodiment are an entire wire, and the second wire 230 and the sixth wire 222 are an entire wire. In the case that the power line is connected to the detection protection device 900 through the first shielding conductor structure 120 and the second shielding conductor structure 220, the fifth wire 122 is split from the first end a of the first shielding conductor structure 120 and connected to the detection protection device 900, the small section of the fifth wire 122 that is drawn at this time is the first wire 130, and similarly, the sixth wire 222 is split from the fourth end d of the second shielding conductor structure 220 and connected to the detection protection device 900, and the small section of the sixth wire 222 that is drawn at this time is the second wire 230.

In some embodiments of the present application, the first and second return lines 140 and 240 are wrapped with an insulating sheath, the first return line 140 connects the first, second or fifth shield layers 123, 124 or 122 near the output end, and the second return line 240 connects the third, fourth or sixth shield layers 223, 224 or 222 near the output end.

In the above-described embodiments of the first and second shield conductor structures 120 and 220 having the double-layer structure or the multi-layer structure, the first and second return lines 140 and 240 may be connected to the corresponding shield layers at the output ends, and in the above-described embodiments having the fifth and sixth wires 122 and 222 extending from the input ends to the output ends along the power supply lines, the first and second return lines 140 and 240 may be connected to the fifth and sixth wires 122 and 222, respectively, at the output ends. The first return line 140 may be connected to the first shielding layer 123, the second shielding layer 124, or the fifth wire 122 at the output end of the power line, and the second return line 240 may be connected to the third shielding layer 223, the fourth shielding layer 224, or the sixth wire 222 at the output end of the power line.

In some embodiments of the present application, the first return line 140 and the second return line 240 are wrapped with an insulating sheath, the first return line 140 is connected to the fifth shielding layer 125 or the fifth wire 122 near the output end, and the second return line 240 is connected to the sixth shielding layer 225 or the sixth wire 222 near the output end.

In the above-described embodiment of the first and second shield conductor structures 120 and 220 having a single-layer shield structure, the first and second return lines 140 and 240 may be connected to the corresponding shield layers at the output terminals, and in the above-described embodiment of the fifth and sixth wires 122 and 222 extending from the input terminal to the output terminal along the power supply line, the first and second return lines 140 and 240 may be connected to the fifth and sixth wires 122 and 222, respectively, at the output terminals. Thus, one return line 140 may be connected to the fifth shield 125 or the fifth wire 122 at the output end of the power line, and the second return line 240 may be connected to the sixth shield 225 or the sixth wire 222 at the output end of the power line.

In some embodiments of the present application, the first return line 140 is obtained by wrapping a portion of the fifth wire 122 with an insulating sheath, and the second return line 240 is obtained by wrapping a portion of the sixth wire 222 with an insulating sheath.

The fifth wire 122 and the sixth wire 222 are disposed in the power wire of the present application, the power wire withdraws a portion of the fifth wire 122 and wraps the insulating sheath on the outer layer to form the first return wire 140 when the power wire is connected to the load device, the fifth wire 122 left in the first shielded conductor structure 120 is used to connect the first wire 130, the first return wire 140 is returned to the input end of the power wire to connect the detecting and protecting device 900, and a portion of the sixth wire 222 is withdrawn and wraps the insulating sheath on the outer layer to form the second return wire 240, and the sixth wire 222 left in the second shielded conductor structure 220 is used to connect the second wire 230 to the second return wire 240 and is returned to the input end of the power wire to connect the detecting and protecting device 900.

In some embodiments of the present application, the first, second, third and fourth shielding layers 123, 124, 223 and 224 are one of a metal material, a semiconductor material and a conductive composite material, and the first, second, third and fourth shielding layers 123, 124, 223 and 224 are one of annular, mesh, spiral in shape. Wherein the first shielding layer 123 and the third shielding layer 223 are copper mesh, and the second shielding layer 124 and the fourth shielding layer 224 are aluminum foil. The outer shielding layer adopts the copper mesh, can be convenient for draw forth the copper mesh as the jumper wire on the one hand, and on the other hand also be convenient for installer observe the wire that presss from both sides between copper mesh and the aluminium foil through the copper mesh, and the inner shielding layer adopts the aluminium foil, can effectively separate the contact of current-carrying wire and shielding layer, wire, guarantees that the current-carrying wire is less easy to receive the damage from the external world.

In some embodiments of the present application, the first shielding conductor structure 120 further includes a first cover film that covers the first shielding layer 123, and the second shielding conductor structure 220 further includes a second cover film that covers the third shielding layer 223. The first shielding layer 123 of the first shielding conductor structure 120 is wrapped by the first wrapping film, and the third shielding layer 223 of the second shielding conductor structure 220 is wrapped by the wrapping film, so that the protective performance of the power line is improved, and the wires outside the first shielding layer 123 and the third shielding layer 223 can be wrapped, so that the whole wire core of the power line is compact and is not easy to loosen. Wherein the outer side of the first coating film is an insulator, the inner side is a conductor to wrap the first shielding layer 123, the outer side of the second coating film is an insulator, and the inner side is a conductor to wrap the third shielding layer 223.

In some embodiments of the present application, the first current carrying line 110 is surrounded by the first insulating layer 150, the second shielding layer 124 is surrounded by the first insulating layer 150, the second current carrying line 210 is surrounded by the second insulating layer 250, and the fourth shielding layer 224 is surrounded by the second insulating layer 250.

The first current-carrying wire 110 and the second current-carrying wire 210 inside the power line are both coated with an insulating layer, the second shielding layer 124 is coated on the outer side of the first insulating layer 150 of the first current-carrying wire 110, and the fourth shielding layer 224 is coated on the outer side of the second insulating layer 250 of the second current-carrying wire 210.

In some embodiments of the present application, the shape of the fifth and sixth shield layers 125, 225 is one of annular, mesh, spiral, and one of metallic, semiconducting, and conductive composite materials of the fifth and sixth shield layers 125, 225. Wherein the first current carrying line 110 is wrapped by the first insulating layer 150, the fifth shielding layer 125 is wrapped by the first insulating layer 150, the second current carrying line 210 is wrapped by the second insulating layer 250, and the sixth shielding layer 225 is wrapped by the second insulating layer 250. The present embodiment corresponds to an embodiment of a shielding conductor structure having a single-layer shielding structure, in which the fifth shielding layer 125 is used to wrap the first insulating layer 150 outside the first current-carrying line 110, and the sixth shielding layer 225 is used to wrap the second insulating layer 250 outside the second current-carrying line 210.

In some embodiments of the present application, the first shield conductor structure 120 and the second shield conductor structure 220 are spaced apart within the power line. The first shielding conductor structure 120 and the second shielding conductor structure 220 are separated, the detection protection device 900 is connected to the application first end a, the second end b, the fourth end d and the fifth end e, and the third end c and the sixth end f are connected between the first shielding conductor structure 120 and the second shielding conductor structure 220 through the jumper 300.

In some embodiments of the present application, the outer side of the first shielding conductor structure 120 is wrapped with the third insulating layer 160, and/or the outer side of the second shielding conductor structure 220 is wrapped with the fourth insulating layer 260, and the power line further includes an outer insulating layer 500, and the outer insulating layer 500 is wrapped with the third insulating layer 160 and/or the fourth insulating layer 260.

To ensure that the first and second shield conductor structures 120, 220 are insulated from each other except for the jumper 300, the third insulating layer 160 is used to report the first shield conductor structure 120 and/or the fourth insulating layer 260 is used to encase the second shield conductor structure 220, i.e., at least one of the first and second shield conductor structures 120, 220 is insulated, which effectively separates the first and second shield conductor structures 120, 220.

In some embodiments of the present application, a filling space is left between the outer insulating layer 500 and the third and fourth insulating layers 160 and 260, and the first and second return lines 140 and 240 are disposed in the filling space.

There is typically some space between the third and fourth insulating layers 160, 260 to the outer insulating layer 500 that may be used to place some cables, for example in this embodiment, the first and second return lines 140, 240 are placed in a filled space, and the outer layers of the first and second return lines 140, 240 are covered with an insulating sheath to ensure insulation from the first and second shield conductor structures 120, 220.

As can be seen from the foregoing description, the embodiment of the present application provides a power line, wherein the first current-carrying wire 110 is used to cover the first shielding conductor structure 120, the second current-carrying wire 210 is used to cover the second shielding conductor structure 220, and the jumper wire, the first shielding conductor structure 120 and the second shielding conductor structure 220 are used to construct a first detection segment, a second detection segment, a third detection segment, a fourth detection segment and a fifth detection segment, and the detection protection device 900 is connected with the five detection segments, so that when the current on the write detection segment changes, the shielding layer is detected to be open or electric leakage occurs. According to the different wire structures, the jumper wires with different forms, the positions of the internal wires with different forms in the first shielding conductor structure 120 and the second shielding conductor structure 220 and the like are adopted, so that the production and the manufacturing of a power wire can be facilitated, the wiring of an installer can be facilitated, and the jumper wire can be applied to LCDI equipment, and the electricity safety of a user can be guaranteed.

The power cord of the present application will be described in detail by way of some specific examples.

Example one

The first current carrying wire 110 of the power line is wrapped with a first insulating layer 150, the first insulating layer 150 is wrapped with a first shielding conductor structure 120, the first shielding conductor structure 120 comprises a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 wraps the second shielding layer 124, and the outer side of the first shielding layer 123 wraps a third insulating layer 160;

the second current carrying wire 210 of the power line is coated with a second insulating layer 250, the second insulating layer 250 is coated with a second shielding conductor structure 220, the second shielding conductor structure 220 comprises a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 is coated with the fourth shielding layer 224, and the outer side of the third shielding layer 223 is coated with the fourth insulating layer 260;

A first end a is arranged near the input end of the power line, a second end b is arranged near the output end of the power line and a third end c is arranged between the first end a and the second end b, wherein the first end a is connected to the detection protection device 900 through a first wire 130, the second end b is connected to the detection protection device 900 through a first return wire 140, a fourth end d is arranged near the input end of the power line, a fifth end e is arranged near the output end of the power line and a sixth end f is arranged between the fourth end d and the fifth end e, the fourth end d is connected to the detection protection device 900 through a second wire 230, the fifth end e is connected to the detection protection device 900 through a second return wire 240, and the third end c and the sixth end f are connected through a jumper wire;

The first shielding conductor structure 120 further comprises a fifth wire 122, in this example a first return wire 140 being located outside the first shielding conductor structure 120, the fifth wire 122 being arranged between the first shielding layer 123 and the second shielding layer 124, and the second shielding conductor structure 220 further comprises a sixth wire 222, in this example a second return wire 240 being located outside the second shielding conductor structure 220, the sixth wire 222 being arranged between the third shielding layer 223 and the fourth shielding layer 224. As shown in fig. 4a, the positional relationship between the fifth wire 122 and the first return line 140 and the first and second shield layers 123 and 124 is shown, and the positional relationship between the sixth wire 222 and the second return line 240 and the third and fourth shield layers 223 and 224 is also shown.

As shown in fig. 4b, at least a part of the first metal conductor 310 is drawn out at the third end c by the first shield layer 123, and at least a part of the second metal conductor 320 is drawn out at the sixth end f by the third shield layer 223 in the fifth detection segment at the third end c and the sixth end f. For example, the first shielding layer 123 and the third shielding layer 223 are copper mesh shielding layers, the first shielding layer 123 draws a portion through the third insulating layer 160 as the first metal conductor 310, and the third shielding layer 223 draws a portion through the fourth insulating layer 260 as the second metal conductor 320.

The third current carrying line 400 of the power line, and the first current carrying line 110 and the second current carrying line 210 are both wrapped in the outer insulating layer 500, and a filling space is left between the first current carrying line 110, the second current carrying line 210 and the third current carrying line 400.

Example two

The example differs from example one in that in this example, the first return line 140 is located within the first shielding conductor structure 120, and at least one of the first return line 140 and the fifth wire 122 is disposed between the first shielding layer 123 and the second shielding layer 124, and the second shielding conductor structure 220 further includes a sixth wire 222, and in this example, the second return line 240 is located within the second shielding conductor structure 220, and at least one of the second return line 240 and the sixth wire 222 is disposed between the third shielding layer 223 and the fourth shielding layer 224. As shown in fig. 5a and 5b, the fifth wire 122 and the first return wire 140 are both shown disposed between the first shield layer 123 and the second shield layer 124, and the sixth wire 222 and the second return wire 240 are both shown disposed between the third shield layer 223 and the fourth shield layer 224.

Example three

The difference between the example three and the example one is that the first current-carrying wire 110 of the power line is wrapped with the first insulating layer 150, the first insulating layer 150 is wrapped with the first shielding conductor structure 120, the first shielding conductor structure 120 comprises the fifth shielding layer 125, and the third insulating layer 160 is wrapped outside the fifth shielding layer 125;

a fifth wire 122 is disposed between the first insulating layer 150 and the fifth shielding layer 125, and a sixth wire 222 is disposed between the second insulating layer 250 and the sixth shielding layer 225, as shown in fig. 6a and 6 b.

Example four

The first shielding conductor structure 120 further includes a third wire 121 and a fifth wire 122, and in this example, the first return wire 140 is located in the first shielding conductor structure 120, and at least one of the first return wire 140, the third wire 121 and the fifth wire 122 is disposed between the first shielding layer 123 and the second shielding layer 124, and the second shielding conductor structure 220 further includes a fourth wire 221 and a sixth wire 222, and in this example, the second return wire 240 is located in the second shielding conductor structure 220, and at least one of the second return wire 240, the fourth wire 221 and the sixth wire 222 is disposed between the third shielding layer 223 and the fourth shielding layer 224. As shown in fig. 7a, a positional relationship in which the fifth wire 122 and the first return wire 140 are located between the first shield layer 123 and the second shield layer 124, and the third wire 121 is located outside the first shield layer 123 is shown, and a positional relationship in which the sixth wire 222 and the second return wire 240 are located between the third shield layer 223 and the fourth shield layer 224, and the fourth wire 221 is located outside the third shield layer 223 is also shown. Other position relations are not shown, and the positions of the three cables can be adjusted.

As shown in fig. 7b, in the fifth detection segment at the third end c and the sixth end f, at least a part of the first metal conductor 310 is led out at the third end c by the third wire 121, and at least a part of the second metal conductor 320 is led out at the sixth end f by the fourth wire 221. For example, the third wire 121 is disconnected at the third end c, a part is drawn out as the first metal conductor 310 through the third insulating layer 160, the fourth wire 221 is disconnected at the sixth end f, and a part is drawn out as the second metal conductor 320 through the fourth insulating layer 260, at this time, the third wire 121 is left in both the first and second detection segments, and the fourth wire 221 is left in both the third and fourth detection segments.

Example five

Example five differs from example four in that the first return line 140 is located outside the first shielding conductor structure 120, the second return line 240 is located outside the second shielding conductor structure 220, and then at least one of the third wire 121 and the fifth wire 122 is disposed between the first shielding layer 123 and the second shielding layer 124, and at least one of the fourth wire 221 and the sixth wire 222 is disposed between the third shielding layer 223 and the fourth shielding layer 224. As shown in fig. 8a, a positional relationship is shown in which the third wire 121 and the fifth wire 122 are both located between the first shielding layer 123 and the second shielding layer 124, and the fourth wire 221 and the sixth wire 222 are both located between the third shielding layer 223 and the fourth shielding layer 224. Other position relations are not shown, and the positions of the three cables can be adjusted.

As shown in fig. 8b, at the fifth detection segment of the third end c and the sixth end f, the third wire 121 is disconnected at the third end c, a part of the third wire is drawn out as the first metal conductor 310 through the first shielding layer 123 and the third insulating layer 160, the fourth wire 221 is disconnected at the sixth end f, a part of the fourth wire is drawn out as the second metal conductor 320 through the second shielding layer 223 and the fourth insulating layer 260, at this time, the third wire 121 is left at both the first detection segment and the second detection segment, and the fourth wire 221 is left at both the third detection segment and the fourth detection segment.

Example six

Example six differs from example four in that the first shielding conductor structure 120 includes a fifth shielding layer 125, the second shielding conductor structure includes a sixth shielding layer 225, and then the third wire 121 and the fifth wire 122 are located on the same side or different sides of the fifth shielding layer 125, and the fourth wire 221 and the sixth wire 222 are located on the same side or different sides of the sixth shielding layer 225, as shown in fig. 9 a. Other position relations are not shown, and the positions of the three cables can be adjusted.

As shown in fig. 9b, in the fifth detection segment at the third end c and the sixth end f, the third wire 121 is disconnected at the third end c, a part of the third wire is drawn out as the first metal conductor 310 through the third insulating layer 160, a part of the fourth wire 221 is disconnected at the sixth end f, and a part of the fourth wire 221 is drawn out as the second metal conductor 320 through the fourth insulating layer 260, and at this time, the third wire 121 is left in both the first detection segment and the second detection segment, and the fourth wire 221 is left in both the third detection segment and the fourth detection segment.

Example seven

The seventh example differs from the fifth example in that the third wire 121 is not disconnected at the third end c, the portion of the third wire 121 in the first detection segment is drawn out from the third end c through the first shielding layer 123 and the third insulating layer 160 as the first metal conductor 310, the fourth wire 221 is not disconnected at the sixth end f, the portion of the fourth wire 221 in the third detection segment is drawn out from the sixth end f through the third shielding layer 223 and the fourth insulating layer 260 as the second metal conductor 320, as shown in fig. 10c, at which time the third wire 121 is absent in the first detection segment, the fourth wire 221 is absent in the third detection segment, as shown in fig. 10a, and the third wire 121 is left in the second detection segment, and the fourth wire 221 is left in the fourth detection segment, as shown in fig. 10 b.

Referring to fig. 11, an embodiment of the present application further provides an electrical connection apparatus, which includes a housing 910, a detection protection device 900 disposed inside the housing 910, and a power line 930 according to any of the foregoing embodiments, where a first end a and a fourth end d are located inside the housing 910, and a third end c and a sixth end f are located at a connection portion between the power line 930 and the housing 910.

Referring to fig. 11, an embodiment of the present application further provides an electrical connection apparatus, which includes a housing 910, a detection protection device 900 disposed inside the housing 910, and a power line 930 according to any of the foregoing embodiments, where a first end a and a fourth end d are located inside the housing 910, and a third end c and a sixth end f are located at a connection portion of the power line 930 and a load device.

Referring to fig. 11, an embodiment of the present application further provides an electrical connection apparatus, including a housing 910, a detection protection device 900 disposed inside the housing 910, and the power cord 930 of any of the foregoing embodiments, where a first end a and a fourth end d are located inside the housing 910, and a third end c and a sixth end f are located between the housing 910 and a load device.

The detection and protection device 900 includes:

A switching module for controlling the electrical connection between the input and output of the power line 930;

The driving module is connected to the first end a through the first conductive wire 130, to the second end b through the first return wire 140, to the fourth end d through the second conductive wire 230, and to the fifth end e through the second return wire 240, respectively, and is used for controlling the switch module to disconnect the power connection between the input end and the output end of the power line 930 when the first shielding conductor structure 120 and/or the second shielding conductor structure 220 detects leakage current or an open circuit occurs.

The embodiment of the application also provides electric equipment, which comprises load equipment and the electric connection equipment of any embodiment, wherein the output end of the power wire 930 is connected to the load equipment.

While the preferred embodiment of the present application has been described in detail, the present application is not limited to the above embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.

Claims

1. A power line, comprising a first current-carrying line and a second current-carrying line, characterized in that: the input end of the power line is used to connect to a detection and protection device, the output end of the power line is used to connect to a load device, and the power line further comprises:

a first shielding conductor structure, covering the first current-carrying line, the first shielding conductor structure comprising a first end close to the input end of the power line, a second end close to the output end of the power line, and a third end located between the first end and the second end;

a second shielding conductor structure, covering the second current-carrying line, the second shielding conductor structure comprising a fourth end close to the input end of the power line, a fifth end close to the output end of the power line, and a sixth end located between the fourth end and the fifth end;

A first wire, used to connect the first end and the detection and protection device;

A second wire, used to connect the fourth end and the detection protection device;

A first return line, used to connect the second end and the detection protection device;

A second return line, used to connect the fifth end and the detection protection device;

A jumper wire is used to connect the third end and the sixth end.

2. The power cord according to claim 1 is characterized in that the first shielded conductor structure between the first end and the third end constitutes a first detection segment, the first shielded conductor structure between the third end and the second end constitutes a second detection segment, the second shielded conductor structure between the fourth end and the sixth end constitutes a third detection segment, the second shielded conductor structure between the sixth end and the fifth end constitutes a fourth detection segment, and the third end and the sixth end constitute a fifth detection segment through the jumper wire.

3. The power cord according to claim 2 is characterized in that the number of the jumper wires is N groups, there are N third ends between the first end and the second end, and there are N sixth ends between the fourth end and the fifth end, so as to form N fifth detection segments, and N is a positive integer greater than 1.

4. The power cord according to claim 1, wherein the jumper wire comprises a first metal conductor extending from the third end and a second metal conductor extending from the sixth end, and the first metal conductor is connected to the second metal conductor;

Alternatively, the jumper wire includes a first metal conductor extending from the third end, and the first metal conductor is connected to the sixth end;

Alternatively, the jumper includes a second metal conductor extending from the sixth end, and the first metal conductor is connected to the third end.

5. The power cord according to claim 4 is characterized in that the first shielding conductor structure includes a first shielding component covering the first current-carrying line, the second shielding conductor structure includes a second shielding component covering the second current-carrying line, at least a portion of the first shielding component is pulled out at the third end as the first metal conductor, and at least a portion of the second shielding component is pulled out at the sixth end as the second metal conductor.

6. The power cord according to claim 5 is characterized in that the first shielding component includes a first shielding layer and a second shielding layer, the first shielding layer wraps the second shielding layer, the second shielding component includes a third shielding layer and a fourth shielding layer, the third shielding layer wraps the fourth shielding layer; a portion of the first shielding layer is led out at the third end as the first metal conductor, or a portion of the third shielding layer is led out at the sixth end as the second metal conductor.

7. The power cord according to claim 6, wherein the first shielded conductor structure comprises a fifth conductor, the fifth conductor is led out from the first end of the first shielded conductor structure to form the first conductor, and the second shielded conductor structure comprises a sixth conductor, the sixth conductor is led out from the fourth end of the second shielded conductor structure to form the second conductor;

At least one of the first return line and the fifth conducting line is disposed between the first shielding layer and the second shielding layer; and at least one of the second return line and the sixth conducting line is disposed between the third shielding layer and the fourth shielding layer.

8. The power cord according to claim 5 is characterized in that the first shielding component is a fifth shielding layer, the second shielding component is a sixth shielding layer, a portion of the fifth shielding layer is led out at the third end as the first metal conductor, and a portion of the sixth shielding layer is led out at the sixth end as the second metal conductor.

9. The power cord according to claim 4 is characterized in that the first shielded conductor structure includes a third wire, the second shielded conductor structure includes a fourth wire, the third wire extends from the first end to the second end, the fourth wire extends from the fourth end to the fifth end, at least a portion of the third wire is extracted at the third end as the first metal conductor, and at least a portion of the fourth wire is extracted at the sixth end as the second metal conductor.

10 . The power cord according to claim 1 , wherein the jumper wire is a third metal conductor, one end of the third metal conductor is connected to the third end, and the other end of the third metal conductor is connected to the sixth end.

11. A power cord according to any one of claims 1 to 6 and 8 to 10, characterized in that the first shielded conductor structure includes a fifth conductor, the fifth conductor is led out from the first end of the first shielded conductor structure to form the first conductor, and the second shielded conductor structure includes a sixth conductor, the sixth conductor is led out from the fourth end of the second shielded conductor structure to form the second conductor.

12. The power cord according to claim 11 is characterized in that the first shielding conductor structure includes a first shielding component covering the first current-carrying line, the second shielding conductor structure includes a second shielding component covering the second current-carrying line, the fifth conductor is in conductive contact with the first shielding component, and the sixth conductor is in conductive contact with the second shielding component.

13. The power cord according to claim 12, wherein the first shielding component comprises a first shielding layer and a second shielding layer, the first shielding layer wraps the second shielding layer, the second shielding component comprises a third shielding layer and a fourth shielding layer, the third shielding layer wraps the fourth shielding layer;

At least one of the first return line and the fifth conductive line is disposed between the first shielding layer and the second shielding layer; and at least one of the second return line and the sixth conductive line is disposed between the third shielding layer and the fourth shielding layer.

14. The power cord according to claim 13 is characterized in that the first return line and the second return line are wrapped with an insulating sheath; the first return line is connected to the first shielding layer, the second shielding layer or the fifth conductor near the output end, and the second return line is connected to the third shielding layer, the fourth shielding layer or the sixth conductor near the output end.

15 . The power cord according to claim 11 , wherein the first return line is obtained by wrapping a portion of the fifth conductor with an insulating sheath, and/or the second return line is obtained by wrapping a portion of the sixth conductor with an insulating sheath.

16. The power cord according to claim 6 or 13 is characterized in that the first shielding layer, the second shielding layer, the third shielding layer or the fourth shielding layer is one of a metal material, a semiconductor material and a conductive composite material, and the shape of the first shielding layer, the second shielding layer, the third shielding layer or the fourth shielding layer is one of a ring shape, a mesh shape, and a spiral shape.

17 . The power cord according to claim 16 , wherein the first shielding layer and the third shielding layer are copper meshes, and the second shielding layer and the fourth shielding layer are aluminum foils.

18. The power cord according to claim 17, characterized in that the first shielding component further includes a first covering film, and the first covering film wraps the first shielding layer; the second shielding component further includes a second covering film, and the second covering film wraps the third shielding layer.

19. The power cord according to claim 18, characterized in that the outer side of the first coating is an insulator, and the inner side is a conductor to wrap the first shielding layer; the outer side of the second coating is an insulator, and the inner side is a conductor to wrap the third shielding layer.

20. The power cord according to claim 1, wherein the first current-carrying line is wrapped by a first insulating layer, the first shielding conductor structure wraps the first insulating layer, the second current-carrying line is wrapped by a second insulating layer, and the second shielding conductor structure wraps the second insulating layer.

21. The power cord according to claim 1 is characterized in that the outer side of the first shielding conductor structure is wrapped with a third insulating layer, and/or the outer side of the second shielding conductor structure is wrapped with a fourth insulating layer, and the power cord also includes an outer insulating layer, and the outer insulating layer wraps the third insulating layer and/or the fourth insulating layer.

22 . The power cord according to claim 21 , wherein a filling space is reserved between the outer insulating layer and the third insulating layer and the fourth insulating layer, and the first return line and the second return line are arranged in the filling space.

23. An electrical connection device, characterized in that it comprises a shell, a detection and protection device arranged inside the shell and a power cord according to any one of claims 1 to 22, wherein the first end and the fourth end are located inside the shell, and the third end and the sixth end are located at the connection between the power cord and the shell.

24. An electrical connection device, characterized in that it comprises a shell, a detection and protection device arranged inside the shell and a power cord as described in any one of claims 1 to 22, wherein the first end and the fourth end are located inside the shell, and the third end and the sixth end are located at the connection between the power cord and the load device.

25. An electrical connection device, characterized in that it comprises a shell, a detection and protection device arranged inside the shell and the power cord according to any one of claims 1 to 22, wherein the first end and the fourth end are located inside the shell, and the third end and the sixth end are located between the shell and the load device.

26. The electrical connection device according to any one of claims 23 to 25, characterized in that the detection and protection device comprises:

A switch module, used to control the power connection between the input end and the output end of the power line;

A driving module is connected to the first end through the first wire, to the second end through the first return wire, to the fourth end through the second wire, and to the fifth end through the second return wire. The driving module is used to control the switch module to disconnect the power connection between the input end and the output end of the power line when a leakage current is detected or an open circuit occurs in the first shielded conductor structure and/or the second shielded conductor structure.

27. An electrical device, characterized in that it comprises a load device and the electrical connection device according to any one of claims 23 to 25, wherein the output end of the power line is connected to the load device.