CN209896394U - a wire harness - Google Patents

Abstract

The utility model relates to a wire rod technical field provides a pencil, include, bayonet joint and many wires, be equipped with positive terminal, negative terminal, GND terminal and PDET terminal in the bayonet joint, many the wire includes at least: the plug comprises a positive wire and a negative wire, wherein one end of the positive wire is electrically connected with the positive terminal, one end of the negative wire is electrically connected with the negative terminal, the GND terminal and the PDET terminal are in short circuit in the plug, and the plug lengths of the positive terminal and the negative terminal are both greater than those of the GND terminal and the PDET terminal. Through the grafting length that changes positive terminal and negative terminal to and GND terminal and PDET terminal when pegging graft with a time delay charging circuit that socket or socket constitute, effectively avoided the risk that the electric spark produced, make the plug of pencil like this have the high advantage of security, simultaneously, this pencil still has simple structure, the convenient advantage of production.

Description

a wire harness

technical field

The utility model relates to the technical field of wire rods, in particular to a wire harness.

Background technique

Wire harnesses are the electrical connections used to carry signals and power between equipment. Wire harnesses are widely used in various electronic equipment, such as electric vehicles, computers, power strips, etc. Therefore, the quality of the wire harness directly affects the normal use of electronic equipment.

As we all know, one end of the wire harness is set on the electronic equipment, and the other end is provided with a plug connector. When the plug connector is directly plugged into a live socket or interface, it is easy to produce electric sparks, short circuits and other phenomena, and in serious cases, the electronic equipment will be burned out. Cause electric fire, resulting in safety accident.

Utility model content

The purpose of the utility model is to provide a wire harness, which aims to solve the technical problem that electric sparks are easily generated when the wire harness is plugged and unplugged with a live socket or interface in the prior art.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a wiring harness, including a plug connector and a plurality of wires, wherein the plug connector is provided with a positive terminal, a negative terminal, a GND terminal and a PDET terminal, and a plurality of the The wires at least include: a positive wire and a negative wire, one end of the positive wire is electrically connected to the positive terminal, one end of the negative wire is electrically connected to the negative terminal, and the GND terminal and the PDET terminal are located in the The plug connector is short-circuited, and the plug lengths of the positive terminal and the negative terminal are both greater than the plug lengths of the GND terminal and the PDET terminal.

Preferably: a hollow cylinder is arranged on the plug connector, and a separator is arranged in the hollow cylinder, and the separator is used to connect the positive terminal, the negative terminal, the GND terminal and the PDET The terminals are separated from each other.

Preferably, the plug end faces of the positive terminal, the negative terminal, the GND terminal and the PDET terminal are all lower than the end faces of the hollow cylinder.

Preferably, the plug end face of the positive terminal is flush with the plug end face of the negative terminal, the plug end face of the GND terminal is flush with the plug end face of the PDET terminal, and the plug end face of the positive terminal is flush with the plug end face of the negative terminal. The height difference between the end face and the insertion end face of the GND terminal is 3.0mm˜5.0mm.

Preferably, the plug end face of the positive terminal is flush with the plug end face of the negative terminal, and the height difference between the plug end face of the positive terminal and the end face of the hollow cylinder is 3.0mm-6.0mm .

Preferably, a fuse is provided on the positive wire, and the outer surface of the fuse is covered with a heat shrinkable sleeve.

Preferably: the positive line is also connected with a circuit breaker.

Preferably: the fuse is aluminum wire, copper wire or silver wire.

Preferably, a high data terminal and a low data terminal are further arranged in the plug connector, and the wire further includes: a high data line electrically connected with the high data terminal, and a low data line connected with the low data terminal , the high data line and the low data line are hinged to each other.

Preferably, a protective cover is sleeved on a plurality of the wires.

The beneficial effects of the present utility model:

The utility model provides a wire harness, when the plug connector of the wire harness is plugged with the corresponding socket or socket, the positive terminal and the negative terminal are plugged first, but at this time they are in a non-energized state, when the GND terminal and the PDET terminal are connected to the socket or After the socket is plugged in, the positive terminal and the negative terminal are in the power-on state, which delays the charging time; in the same way, when the wiring harness is pulled out, the GND terminal and the PDET terminal are separated first so that the positive terminal and the negative terminal are in a power-off state, so that Effectively prevent the occurrence of electric sparks during the plugging and unplugging process of the wiring harness.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present utility model. For some novel embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic plan view of a wiring harness provided by an embodiment of the present utility model;

2 is a schematic three-dimensional structural diagram of a plug connector of a wire harness provided by an embodiment of the present invention;

3 is a schematic cross-sectional structural diagram of a plug connector of a wire harness provided by an embodiment of the present invention.

Reference numerals: 1, plug connector; 11, positive terminal; 12, negative terminal; 13, GND terminal; 14, PDET terminal; 15, high data terminal; 16, low data terminal; 17, hollow cylinder; 18, spacer Board; 2. Conductor; 21. Positive wire; 22. Negative wire; 23. High data wire; 24. Low data wire; 3. Fuse; 31. Heat shrinkable sleeve; 4. Circuit breaker; 41. Insulated terminal; 5. Protective sleeve; 6. Controller.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, Rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Referring to FIG. 1 to FIG. 3 , a wiring harness provided by an embodiment of the present invention will now be described. In this embodiment, the wiring harness is the power wiring harness of the electric vehicle battery, the socket or socket is arranged on the electric vehicle battery, one end of the wiring harness is electrically connected to the electric vehicle battery, and the other end of the wiring harness is electrically connected to the controller 6 of the electric vehicle. connect.

In this embodiment, the wire harness includes a plug connector 1 and a plurality of wires 2 . The connector is provided with a positive terminal 11, a negative terminal 12, a GND terminal 13 and a PDET terminal 14. The plurality of wires 2 at least include: a positive wire 21 and a negative wire 22. One end of the positive wire 21 is electrically connected to the positive terminal 11, and the positive wire The other end of 21 is electrically connected to the circuit board in the controller 6, one end of the negative wire 22 is electrically connected to the negative terminal 12, the other end of the negative wire 22 is electrically connected to the circuit board in the controller 6, and the GND terminal 13 is connected to PDET The terminals 14 are shorted in the plug connector 1 , and the plug lengths of the positive terminal 11 and the negative terminal 12 are both greater than the plug lengths of the GND terminal 13 and the PDET terminal 14 . The insertion length refers to the mating length of each terminal when it is inserted into the socket or socket.

In this embodiment, the controller 6 is an MCCU (Multiple Communication Control Unit) or a VCU (Vehicle Control Unit, vehicle controller 6). In this embodiment, the MCCU can be understood as: the battery of the electric vehicle The collection of the management system, the motor controller 6 and the on-board charger is the integrated controller 6 .

When the plug connector 1 is plugged into the socket or socket on the battery of the electric vehicle, the positive terminal 11 and the negative terminal 12 are plugged into the socket or socket first, but at this time, the positive terminal 11 and the negative terminal 12 are not energized, when the GND terminal 13 After the PDET terminal 14 is plugged into the socket or socket, the circuit is connected (the controller 6 has an on-discharge delay control circuit), so that the positive terminal 11 and the negative terminal 12 are in the energized state, which delays charging and discharging. time. When the plug connector 1 is separated from the socket or socket on the battery of the electric vehicle, the GND terminal 13 and the PDET terminal 14 are first separated from the socket or socket, so that the positive terminal 11 and the negative terminal 12 are in a power-off state, which effectively prevents The plug connector 1 has a spark phenomenon during the plugging and unplugging process, so as to have a protective effect on the battery of the electric vehicle and the controller 6, and prevent the occurrence of safety accidents.

The wiring harness provided by the utility model can effectively prevent electric sparks by changing the lengths of the positive terminal 11 and the negative terminal 12, and a delay charging circuit formed by the GND terminal 13 and the PDET terminal 14 and the socket or socket when they are plugged. Therefore, the plugging and unplugging of the wire harness has the advantages of high safety, and at the same time, the wire harness also has the advantages of simple structure and convenient production.

Specifically, in this embodiment, the plug connector 1 is provided with a hollow cylinder 17, and a separator 18 is provided in the hollow cylinder 17. The separator 18 is used to connect the positive terminal 11, the negative terminal 12, the GND terminal 13 and the PDET. The terminals 14 are spaced apart from each other. The hollow cylinder 17 is easy to be plugged into the socket or socket. On the one hand, the partition plate 18 has a foolproof function to prevent the plug connector 1 from being inserted wrongly, and on the other hand, it is used to prevent mutual interference between the terminals. The plate 18 also has a position-limiting function, which can prevent the bending of each terminal during the plugging and unplugging process of the plug connector 1 .

Specifically, in this embodiment, the insertion end faces of the positive terminal 11 , the negative terminal 12 , the GND terminal 13 and the PDET terminal 14 are all lower than the end faces of the hollow cylinder 17 . That is, the positive terminal 11 , the negative terminal 12 , the GND terminal 13 and the PDET terminal 14 are all arranged inside the hollow cylinder 17 , so that the hollow cylinder 17 can be connected to the positive terminal 11 , the negative terminal 12 , the GND terminal 13 and the PDET terminal 14 . to good protection.

Specifically, the plug end face of the positive terminal 11 is flush with the plug end face of the negative terminal 12 , the plug end face of the GND terminal 13 is flush with the plug end face of the PDET terminal 14 , and the plug end face of the positive terminal 11 is flush with the GND terminal 13 The height difference between the plug end faces is 3.0mm～5.0mm, preferably 4.0mm.

Specifically, the plug end face of the positive terminal 11 is flush with the plug end face of the negative terminal 12, and the height difference between the plug end face of the positive terminal 11 and the end face of the hollow cylinder 17 is 3.0 mm to 6.0 mm, preferably 5.0mm.

Specifically, a fuse 3 is provided on the positive wire 21 , and the outer surface of the fuse 3 is covered with a heat shrinkable sleeve 31 . In this embodiment, the fuse 3 is arranged inside the controller 6, and the fuse 3 is used for circuit breaking protection to prevent the controller 6 or the battery of the electric vehicle from being damaged due to excessive or abnormal current.

More specifically, in this embodiment, the fuse 3 is an aluminum wire, and when the aluminum wire is blown, the heat shrinkable sleeve 31 can play a wrapping function, and has a good power-off function. In this embodiment, the fuse 3 is arranged inside the controller 6, and the fuse 3 can sense the temperature and current in the controller 6. When the temperature of the controller 6 is too high or the current is too large, the fuse 3 can be used in time. The power-off protection can effectively avoid the disaster caused by the internal fault of the controller 6, such as electric fire. In other embodiments, the fuse 3 is made of pure silver wire or pure copper wire. The pure silver wire and pure copper wire have good electrical conductivity and electrical sensitivity, and can sense subtle changes in current and temperature to improve safety electrical performance.

Specifically, in this embodiment, the circuit breaker 4 is also connected to the positive line 21 . The circuit breaker 4 is arranged outside the controller 6, and the positive wire 21 is connected to the circuit breaker 4 by using a sheet-type pre-insulated terminal 41. The circuit breaker 4 is used to further protect the wiring harness. At the same time, the circuit breaker 4 can also actively The power-off processing of the incoming wire of the harness has the advantage of convenient operation.

Specifically, in this embodiment, the plug connector 1 is further provided with a high data terminal 15 and a low data terminal 16, and the wire 2 further includes: a high data wire 23 (CAN-H) electrically connected to the high data terminal 15, and The low data line 24 (CAN-L) connected with the low data terminal 16, the high data line 23 and the low data line 24 are hinged to each other to improve their anti-interference ability, wherein the insertion of the high data terminal 15 and the low data terminal 16. The connection end face is flush with the insertion end face of the GND terminal 13 .

Specifically, in this embodiment, a protective cover 5 is sheathed on the plurality of wires 2 . In this embodiment, the protective cover 5 is sleeved on the part of the plurality of wires 2 outside the controller 6 , and the protective cover 5 is used to organize and protect the plurality of wires 2 to improve the cleanliness of the wire harness. The protective cover 5 is made of rubber or soft rubber material, so that the protective cover 5 has good flexibility while insulating.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (10)

1. A wiring harness, comprising, a plug connector and a plurality of wires, characterized in that: the plug connector is provided with a positive terminal, a negative terminal, a GND terminal and a PDET terminal, and the plurality of described wires at least include: a positive wire and a negative electrode One end of the positive wire is electrically connected to the positive terminal, one end of the negative wire is electrically connected to the negative terminal, the GND terminal and the PDET terminal are short-circuited in the plug connector, and the The plugging lengths of the positive terminal and the negative terminal are both greater than the plugging lengths of the GND terminal and the PDET terminal. 2 . The wire harness according to claim 1 , wherein a hollow cylinder is arranged on the plug connector, and a separator is arranged in the hollow cylinder, and the separator is used to make the positive terminal , the negative terminal and the GND terminal and the PDET terminal are separated from each other. 3 . The wire harness according to claim 2 , wherein the plug end faces of the positive terminal, the negative terminal, the GND terminal and the PDET terminal are all lower than the end face of the hollow cylinder. 4 . . 4 . The wire harness according to claim 3 , wherein the plug end face of the positive terminal is flush with the plug end face of the negative terminal, and the plug end face of the GND terminal is flush with the PDET terminal. 5 . The insertion end face of the GND terminal is flush, and the height difference between the insertion end face of the positive terminal and the insertion end face of the GND terminal is 3.0 mm to 5.0 mm. 5 . The wire harness according to claim 3 , wherein the plug end face of the positive terminal is flush with the plug end face of the negative terminal, and the plug end face of the positive terminal is flush with the hollow circle. 6 . The height difference between the end faces of the barrels is 3.0 mm to 6.0 mm. 6 . The wire harness according to claim 1 , wherein a fuse is provided on the positive wire, and the outer surface of the fuse is covered with a heat shrinkable sleeve. 7 . 7 . The wire harness according to claim 1 , wherein a circuit breaker is also connected to the positive wire. 8 . 8 . The wire harness according to claim 6 , wherein the fuse is an aluminum wire, a copper wire or a silver wire. 9 . 9. A wire harness according to any one of claims 1 to 5, wherein: the plug connector is further provided with a high data terminal and a low data terminal, and the wire further comprises: a connection with the high data terminal A high data line is electrically connected, and a low data line is connected to the low data terminal, the high data line and the low data line are hinged to each other. 10. The wire harness according to any one of claims 1 to 5, wherein a protective cover is sleeved on a plurality of the wires.

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