CN222380509U - Electronic circuit breaker and protection circuit thereof - Google Patents

Abstract

The utility model discloses an electronic circuit breaker and a protection circuit thereof. The electronic circuit breaker includes a housing, a first circuit board, and a second circuit board. The first circuit board is connected with the second circuit board, and the first circuit board and the second circuit board are used for arranging a protection circuit. The protection circuit can control the on-off of a line passing through the electronic circuit breaker. The shell is provided with a containing cavity, the first circuit board and the second circuit board are arranged in the containing cavity, and the second circuit board is located on one side of the first circuit board in the thickness direction. According to the scheme, the protection circuit is integrated on the first circuit board and the second circuit board, and the second circuit board is arranged on one side of the thickness direction of the first circuit board, so that the protection circuit layout areas are not on the same plane, the size of the circuit board is reduced, and the assembly compactness among all parts in the electronic circuit breaker is improved.

Description

Electronic circuit breaker and protection circuit thereof

Technical Field

The utility model relates to the technical field of electronic devices, in particular to an electronic circuit breaker and a protection circuit thereof.

Background

The intelligent street lamp is a novel street lamp which is based on a street lighting lamp post, integrates public security, traffic signals, communication, traffic signs and the like, realizes the integration of multiple street lamps, reduces the road surface vertical rod and releases public space resources.

Along with the wide application of intelligent street lamps, new requirements are also put forward on the reliability of a power supply control system inside the intelligent street lamps. In the prior art, an intelligent street lamp is provided with an electronic breaker to protect a power supply line in the intelligent street lamp under the condition of circuit faults through the electronic breaker.

In the related art, the electronic circuit breaker has a large size and requires a sufficient space for installation at an installation position. And thus cannot be adapted to some street lamps or other equipment with smaller interior space.

Disclosure of utility model

The utility model discloses an electronic circuit breaker and a protection circuit thereof, which are used for solving the technical problem of poor waterproof performance of the electronic circuit breaker in the related technology.

In order to solve the problems, the utility model adopts the following technical scheme:

In a first aspect, the present application provides an electronic circuit breaker. The electronic circuit breaker includes a housing, a first circuit board, and a second circuit board. The first circuit board is connected with the second circuit board, and the first circuit board and the second circuit board are used for arranging a protection circuit. The protection circuit can control the on-off of a line passing through the electronic circuit breaker. The shell is provided with a containing cavity, the first circuit board and the second circuit board are arranged in the containing cavity, and the second circuit board is located on one side of the first circuit board in the thickness direction.

The technical scheme adopted by the utility model can achieve the following beneficial effects:

In the electronic circuit breaker provided by the application, the protection circuits are respectively arranged on the two circuit boards, namely, the first circuit board and the second circuit board are both provided with at least part of the protection circuits. Therefore, the protection circuit can be prevented from being distributed along the same plane, and the wiring area of the single circuit board can be reduced under the condition that the wiring area of the protection circuit is fixed. Thus, this embodiment is beneficial for reducing the area of the monolithic circuit board. The first circuit board is connected with the second circuit board, so that part of circuits on the first circuit board and part of circuits on the second circuit board can form a protection circuit, the circuits on the first circuit board are associated with the circuits on the second circuit board, and the integrity among all parts of the protection circuit is ensured. The first circuit board is arranged on one side of the thickness direction of the second circuit board, and therefore the plane where the first circuit board is located is not coplanar with the plane where the second circuit board is located, and further the space on one side of the thickness direction of the second circuit board is fully utilized, so that the protection circuit layout is more compact in space. Thus, this solution is beneficial for reducing the volume of the electronic circuit breaker to be suitable for smaller installation spaces.

According to some alternative embodiments, the plane of the first circuit board is perpendicular or parallel to the plane of the second circuit board.

According to some alternative embodiments, the first circuit board and the second circuit board are detachably electrically connected.

According to some alternative embodiments, the first circuit board is provided with a first plug connector. The second circuit board is provided with a second plug connector. The first circuit board and the second circuit board are detachably and electrically connected through the first plug connector and the second plug connector.

According to some alternative embodiments, the protection circuit includes an electronically controlled switch, a controller, a detection device, and an operating switch. The first circuit board is used for arranging an electric control switch and a detection device. The second circuit board is used for arranging a controller and an operation switch.

According to some alternative embodiments, the bottom of the housing has a mounting portion. The shell is fixedly installed on the preset bearing piece through the installation part. The plane of the first circuit board is perpendicular to the plane of the bottom of the shell.

According to some alternative embodiments, the top of the housing has an operating portion. The second circuit board is arranged on the top side of the accommodating cavity, the plane where the second circuit board is arranged is parallel to the plane where the top of the shell is arranged, and the operation switch is opposite to the operation part.

According to some alternative embodiments, the electronic circuit breaker further comprises a terminal. A partition board is arranged in the shell, and a wiring sealing cavity and an electric control sealing cavity are formed at intervals through the partition board. The wiring terminal is arranged in the wiring sealing cavity, and the electronic circuit breaker is connected with an external circuit through the wiring terminal. The first circuit board and the second circuit board are arranged in the electric control sealing cavity, and at least one of the first circuit board and the second circuit board is connected with the wiring terminal.

According to some alternative embodiments, the electronic circuit breaker further comprises a first seal. The housing has a wiring hole. The wiring hole penetrates through the cavity wall of the wiring sealing cavity and is communicated with the wiring sealing cavity. The first sealing piece is arranged in the wiring hole and can be respectively matched with the shell and the cable of the connecting terminal in a sealing way.

On the other hand, the application also provides a protection circuit. The protection circuit can be used for the electronic circuit breaker provided by the application. The protection circuit comprises an electric control switch, a controller and a detection device. The electric control switch is connected between the two wiring terminals. The terminals in the electronic circuit breaker include live wire terminals. The detection device is arranged between the two live wire terminals and is used for collecting current information passing through the space between the two live wire terminals. The controller is respectively connected with the detection device and the electric control switch, and the controller can control the electric control switch to be disconnected according to current information acquired by the detection device.

According to some alternative embodiments, the protection circuit comprises a plurality of electrically controlled switches and a plurality of detection means. One detection device corresponds to one electric control switch. The electric control switch is arranged in a circuit connected with the two live wire terminals and is used for controlling the on-off of the circuit connected with the two live wire terminals. The detection device is configured to collect current information of a line where the corresponding electric control switch is located. The controller can control the corresponding electric control switch to be disconnected according to the current information collected by the detection device.

According to some alternative embodiments, the protection circuit further comprises a plurality of sets of indicator lights, each set of indicator lights having an alarm state and an operating state, one electronically controlled switch corresponding to each set of indicator lights. And under the condition that the electric control switch is closed and conducted, a group of indicator lamps corresponding to the electric control switch are switched to an operating state. And under the condition that the electric control switch is disconnected, a group of indicator lamps corresponding to the electric control switch are switched to an alarm state.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an electronic circuit breaker provided by some alternative embodiments of the application;

fig. 2 is a schematic view of an electronic circuit breaker cover provided in accordance with some alternative embodiments of the application after being opened;

fig. 3 is an exploded schematic view of an electronic circuit breaker provided by some alternative embodiments of the present application;

FIG. 4 is a schematic diagram I of a protection circuit provided by some alternative embodiments of the present application;

FIG. 5 is a schematic diagram II of a protection circuit according to some alternative embodiments of the present application;

Fig. 6 is a schematic diagram III of a protection circuit provided by some alternative embodiments of the present application.

Reference numerals illustrate:

100-shell, 101-containing cavity, 102-wiring sealing cavity, 103-electric control sealing cavity, 104-adjusting hole, 105-wiring hole, 110-mounting part, 120-operating part, 130-baffle, 140-cover plate, 150-main body part, 200-first circuit board, 300-second circuit board, 400-protection circuit, 410-electric control switch, 411-silicon controlled rectifier, 412-optocoupler, 420-controller, 430-detecting device, 440-operating switch, 450-indicator lamp, 460-power supply, 470-zero line, 480-fire wire, 500-terminal, 600-first sealing element, 700-second sealing element and 710-connecting part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the related art, a protection circuit in an electronic circuit breaker is integrated on the same circuit board. And the circuit board is disposed inside the housing. Thus, the size of the shell on the plane of the circuit board is larger than that of the circuit board. Therefore, the size of the electronic circuit breaker is affected by the size of the circuit board, so that the overall size of the electronic circuit breaker is large, and thus cannot be installed in a small space.

In view of the above problems, the present application provides an electronic circuit breaker and a protection circuit thereof. The electronic circuit breaker is characterized in that a protection circuit is arranged on two circuit boards, and one circuit board is arranged on one side of the other circuit board in the thickness direction. This is beneficial to fully utilizing the space in the shell and improving the compactness of assembly among the electronic components in the protection circuit. Thus, this solution is beneficial for reducing the volume of the electronic circuit breaker to be suitable for installation in some narrower spaces.

The electronic circuit breaker and the protection circuit thereof provided by the embodiment of the application are described in detail below with reference to fig. 1 to 4 through specific embodiments and application scenarios thereof.

In a first aspect, the present application provides an electronic circuit breaker. The electronic circuit breaker can be used in an access circuit and to open the circuit in case of a failure of the circuit to protect the electrical devices in the circuit.

Referring to fig. 1 and 2, the electronic circuit breaker provided by the present application includes a housing 100, a first circuit board 200, and a second circuit board 300. Wherein the housing 100 is a basic structural member that may provide a mounting basis for other components.

The first circuit board 200 and the second circuit board 300 are connected, and the first circuit board 200 and the second circuit board 300 are used for laying out the protection circuit 400. The protection circuit 400 may control the on-off of a line passing through the electronic circuit breaker. Illustratively, a part of the protection circuit 400 is disposed on the first circuit board 200, and the other part is disposed on the second circuit board 300, and is connected through the first circuit board 200 and the second circuit board 300, so that the protection circuit 400 disposed on the first circuit board 200 and the protection circuit 400 disposed on the second circuit board 300 can be associated to form a complete on-off circuit for controlling a line passing through the electronic circuit breaker. Illustratively, the first circuit board 200 and the second circuit board 300 may be electrically connected by, but not limited to, wires and/or metal probes.

Referring to fig. 2, the housing 100 has a receiving chamber 101. The first circuit board 200 and the second circuit board 300 are disposed in the accommodating chamber 101, and the second circuit board 300 is located at one side in the thickness direction of the first circuit board 200. The thickness direction of the first circuit board 200 is a normal direction of the wiring surface of the first circuit board 200. Illustratively, the thickness direction of the first circuit board 200 is the direction shown by the y-axis in fig. 2. Illustratively, the second circuit board 300 is located at one side of the thickness direction of the first circuit board 200, and it should be understood that at least part of the second circuit board 300 overlaps the first circuit board 200 in the thickness direction of the first circuit board 200, i.e., the projection of the second circuit board 300 onto the plane of the first circuit board 200 along the thickness direction of the first circuit board 200 is at least partially located on the first circuit board 200.

In the above embodiment, the second circuit board 300 is disposed on one side of the first circuit board 200 in the thickness direction, so that the protection circuit 400 is prevented from being routed along the same plane, and the space of the first circuit board 200 in the thickness direction is fully utilized, so that the compactness of distribution among components in the electronic circuit breaker is improved, and the volume of the electronic circuit breaker is reduced.

In some alternative embodiments, the accommodating cavity 101 is a closed space, so as to prevent external dust and/or liquid from entering the accommodating cavity 101, which is beneficial to improving the dustproof and waterproof performance of the electronic circuit breaker, so as to adapt to more working environments.

According to some alternative embodiments, referring to fig. 2 and 3, the plane of the first circuit board 200 is perpendicular to the plane of the second circuit board 300. For example, the plane in which the first circuit board 200 is located may be a plane in which a surface of one side in the thickness direction of the first circuit board 200 is located. Similarly, the plane on which the first circuit board 200 is located may be a plane on which the surface on one side in the thickness direction of the second circuit board 300 is located.

In the above embodiment, the plane of the first circuit board 200 is perpendicular to the plane of the second circuit board 300, so that the first circuit board 200 and the second circuit board 300 are connected. The plane of the first circuit board 200 is perpendicular to the plane of the second circuit board 300, which is beneficial to reducing the moment applied to the joint of the first circuit board 200 and the second circuit board 300 and improving the reliability of the joint of the first circuit board 200 and the second circuit board 300. In addition, the first circuit board 200 and the second circuit board 300 are disposed vertically, and it is also advantageous to accommodate the accommodating chamber 101 inside the housing 100.

According to some alternative embodiments, the second circuit board 300 is disposed adjacent to the edge of the first circuit board 200, which is beneficial in adapting the structure of the receiving cavity 101, so that the first circuit board 200 and the second circuit board 300 may be supported on two connected inner sidewalls of the receiving cavity 101, respectively. In some alternative embodiments, the first circuit board 200 and the second circuit board 300 are each disposed proximate to the cavity wall of the receiving cavity 101, thereby advantageously preventing the first circuit board 200 and/or the second circuit board 300 from dividing the receiving cavity 101 into a plurality of cavities, and improving the compactness of the assembly between the first circuit board 200, the second circuit board 300 and the housing 100.

One of the first circuit board 200 and the second circuit board 300 having pads is a soldering surface. The soldering surface is illustratively an SMT (Surface Mounted Technology, surface mount technology) surface.

In some alternative embodiments, where the electronic components on the first circuit board 200 are plug-in electronic components, the second circuit board 300 is located on a side of the first circuit board 200 remote from the soldering surfaces. It should be noted that, for plugging mounted on the first circuit board 200, pins of the electronic component need to penetrate the first circuit board 200 and then be soldered to pads of the soldering surface. Although the dimensions of the different electronic components in the thickness direction of the first circuit board 200 are different, the heights after soldering with the soldering faces of the first circuit board 200 are substantially uniform for the different plug-in electronic components. Therefore, this embodiment is advantageous in reducing the space between the first circuit board 200 and the cavity wall of the accommodation cavity 101, and improving the compactness of the assembly of the first circuit board 200 with the housing 100.

In some alternative embodiments, the first circuit board 200 and the second circuit board 300 may be fastened to the inner sidewall of the case 100 by screws, snaps, and/or a clamping groove. For this reason, the specific connection manner of the first circuit board 200 and the second circuit board 300 to the housing 100 is not limited in this embodiment.

In some alternative embodiments, the second circuit board 300 is disposed adjacent to a side of the first circuit board 200 and/or a side of the first circuit board 200 adjacent to the second circuit board 300 with a smaller height of electronic components. This is beneficial in preventing the electronic components on the first circuit board 200 from spatially interfering with the electronic components on the second circuit board 300.

In some alternative embodiments, the plane of the first circuit board 200 is parallel to the plane of the second circuit board 300. The parallel arrangement of the first circuit board 200 and the second circuit board 300 is beneficial to improving the compactness of the assembly of the first circuit board 200 and the second circuit board 300. In some further alternative embodiments, a side of the first circuit board 200 adjacent to the second circuit board 300 is a soldered side of the first circuit board 200. The surface of the second circuit board 300 adjacent to the first circuit board 200 is a soldering surface of the second circuit board 300. In this way, the wiring layers of the first circuit board 200 and/or the second circuit board 300 may be distributed between the electronic components on the first circuit board 200 and the electronic components on the second circuit board 300, which is beneficial for reducing mutual electromagnetic interference between the electronic components on the first circuit board 200 and the electronic components on the second circuit board 300. The wiring layer of the circuit board generally refers to a copper layer in the circuit board for forming a connection between electronic components on each circuit board.

In some alternative embodiments, the first circuit board 200 and the second circuit board 300 are detachably electrically connected. I.e., the first circuit board 200 and the second circuit board 300 are detachable. In this way, the first circuit board 200 and the second circuit board 300 may be fed separately during the product preparation process. Specifically, in the process of assembling the first circuit board 200 and the second circuit board 300 in the housing 100, the first circuit board 200 and the second circuit board 300 are connected, so that the connection of the first circuit board 200 and the second circuit board 300 is prevented from being damaged in the transportation process, and the yield of products is improved. In addition, the first circuit board 200 and the second circuit board 300 are detachably connected, so that the difficulty in disassembling and assembling the first circuit board 200 and the second circuit board 300 is reduced, and the maintenance is convenient. In addition, in the case that one of the electronic components in the protection circuit 400 is damaged, only one of the circuit boards needs to be replaced, so that the later maintenance cost is reduced.

In some alternative embodiments, the first circuit board 200 is provided with a first connector. The second circuit board 300 is provided with a second connector. The first circuit board 200 and the second circuit board 300 are connected by a first connector and a second connector in a plug-in fit. One of the first plug connector and the second plug connector is a pin needle, and the other is a pin needle seat. Illustratively, the first connector is a pin header and the other is a box header.

In the above embodiment, the first circuit board 200 and the second circuit board 300 are connected by the first connector and the second connector in a plug-in fit, which is beneficial to simplifying the assembly difficulty of the first circuit board 200 and the second circuit board 300.

Referring to fig. 1 and 3, in some alternative embodiments, the housing 100 includes a body portion 150 and a cover plate 140. Illustratively, the receiving cavity 101 is provided in the body portion 150. The body 150 has a mounting port that communicates with the accommodation chamber 101. During assembly of the electronic circuit breaker, the first circuit board 200 and the second circuit board 300 may enter the accommodating chamber 101 through the mounting ports. Illustratively, the mounting port is located in a sidewall of the body portion 150. Referring to fig. 3, the mounting opening is located on the opposite side of the main body 150 in the y-axis.

In some alternative embodiments, the first circuit board 200 is fixed to an inner wall of the accommodating chamber 101 opposite to the mounting opening. The second circuit board 300 is perpendicular to the first circuit board 200. The first circuit board 200 may be fastened in the case 100 by screws, for example. In a further alternative embodiment, a mounting slot is provided in the housing 100, the mounting slot extending in a direction perpendicular to the plane of the mounting opening. Illustratively, at least a portion of the second circuit board 300 is snap-fit within the mounting slot to secure the second circuit board 300 to the housing 100.

In the above embodiment, the first circuit board 200 may be fastened at a preset position in the housing 100 by a screw, and then the second circuit board 300 is pushed into the accommodating cavity 101 along the mounting groove, so that the second circuit board 300 may be connected with the first circuit board 200 in a plug-in fit, and is clamped in the housing 100. Therefore, in the above embodiment, the mounting groove not only can provide guidance for mounting the second circuit board 300, reduce the difficulty of aligning and plugging the second circuit board 300 and the first circuit board 200, but also can be used for realizing the clamping connection of the second circuit board 300 on the housing 100. In addition, in the above embodiment, the first circuit board 200 and the second circuit board 300 may be supported by the housing 100 after being connected by a plug-in fit. In this way, during the organization or transportation of the electronic circuit breaker, the stress of the connection structure between the first circuit board 200 and the second circuit board 300 is reduced, and the reliability of the electrical connection between the first circuit board 200 and the second circuit board 300 is improved.

According to some alternative embodiments, protection circuit 400 includes a low voltage portion circuit and a high voltage portion circuit. The first circuit board 200 is used to route a high-voltage line portion in the protection circuit 400. The second circuit board 300 is used to route a low voltage line portion in the protection circuit 400. Referring to fig. 4, in some alternative embodiments, protection circuit 400 further includes a power supply 460. For example, the power supply 460 may be used to convert high voltage power to low voltage power to power the low voltage line section. In some alternative embodiments, power supply 460 is an ACDC non-isolated power supply, which is beneficial for reducing the space occupied by power supply 460 and also for increasing the output power of power supply 460.

Referring to fig. 1-3, according to some alternative embodiments, a protection circuit 400 includes an electronically controlled switch 410, a controller 420, a detection device 430, and an operational switch 440. The first circuit board 200 is used for arranging the electric control switch 410 and the detecting device 430. The second circuit board 300 is used for laying out the controller 420 and the operation switch 440. By way of example, the controller 420 may be, but is not limited to, a single-chip microcomputer. The operation switch 440 is a low-voltage switch, and is mainly used for realizing man-machine interaction. Specifically, the operating state of the electronic circuit breaker may be adjusted by operating the switch 440. Illustratively, the operating switch 440 may be, but is not limited to, a push switch. In the actual application process, the state of the electronic circuit breaker can be switched by pressing the operation switch 440, so as to adjust the on-off state of the line passing through the electronic circuit breaker.

In the above embodiment, the high-voltage circuit and the low-voltage circuit in the protection circuit 400 may be respectively disposed on two different circuit boards, so as to be beneficial to mutual isolation between the high-voltage circuit and the low-voltage circuit, and improve the reliability of the electronic circuit breaker.

Illustratively, the operating switch 440 employs a horizontal tap key as the protection cancellation function. A high level indicates that the controller 420 can normally detect the leakage, overcurrent, and short circuit functions. The low level clears the protection state.

Referring to fig. 2 and 3, the bottom of the case 100 has a mounting portion 110. The housing 100 is fixedly mounted on a predetermined carrier through the mounting portion 110. Specifically, in the practical application process, the preset bearing piece can be, but is not limited to, an electric box and a wall. For example, the housing 100 may be snapped, screwed, glued, etc. with the predetermined carrier via the mounting portion 110. The plane of the first circuit board 200 is perpendicular to the plane of the bottom of the case 100. The first circuit board 200 is perpendicular to the plane of the bottom of the housing 100, so that in the case of entering the liquid in the housing 100, the soaking amount of the liquid to the first circuit board 200 is reduced, and the first circuit board 200 is protected. In addition, the first circuit board 200 is perpendicular to the plane where the bottom of the housing 100 is located, which is also beneficial to reducing the size of the bottom of the housing 100, and thus is beneficial to reducing the area of the electronic circuit breaker occupying the mounting surface of the preset carrier, so as to adapt to smaller mounting space.

In some alternative embodiments, referring to fig. 1 and 2, the top of the housing 100 has an operating portion 120. Illustratively, the operating part 120 may provide an operating space for an operator to manually adjust the operating state of the electronic circuit breaker. Illustratively, the second circuit board 300 is disposed on a top side of the receiving cavity 101. The plane of the second circuit board 300 is parallel to the plane of the top of the housing 100, and the operation switch 440 is opposite to the operation portion 120.

In some alternative embodiments, the operation portion 120 is provided with a avoidance port, and the operation switch 440 is opposite to the avoidance port of the operation portion 120, so that an operator can directly adjust the state of the operation switch 440 to adjust the working state of the electronic circuit breaker. In other alternative embodiments, the operating portion 120 may be a flexible membrane made of a flexible material. Thus, the operator can directly press the operation part 120, so that the operation part 120 is deformed to trigger the operation switch 440, and the working state of the electronic circuit breaker is adjusted through the operation switch 440.

In the above embodiment, the second circuit board 300 is disposed on the top side of the accommodating cavity 101, so that the liquid is prevented from wetting the second circuit board 300 after the liquid enters the accommodating cavity 101, thereby protecting the second circuit board 300.

In some alternative embodiments, referring to fig. 2 and 3, the electronic circuit breaker further includes a terminal 500. A partition 130 is provided in the housing 100, and a wiring seal chamber 102 and an electric control seal chamber 103 are formed at intervals by the partition 130. The terminal 500 is disposed in the wire sealing chamber 102, and the electronic circuit breaker is connected to an external circuit through the terminal 500. The terminal 500 may be a connection terminal, for example. In particular, there are many kinds of terminals, and the specific kind of the terminal 500 is not limited to this embodiment.

In some alternative embodiments, the first circuit board 200 and the second circuit board 300 are disposed in the electrically controlled sealed cavity 103, and at least one of the first circuit board 200 and the second circuit board 300 is connected to the terminal 500.

In the above-described embodiment, the wire sealing chamber 102 is advantageous in preventing liquid from entering and contacting the terminal 500, thereby being advantageous in protecting the reliability of connection of the terminal 500 with an external circuit. However, the standardization of the wiring of the external circuit to the terminal 500 and repeated disassembly of the external connection circuit during maintenance may affect the sealing performance of the wiring sealing chamber 102. Thus, in some extreme cases, there is a poor sealing performance of the wire seal chamber 102 due to the wire non-standardization, thereby causing the liquid to easily enter into the wire seal chamber 102. In the circuit breaker provided by the application, the control circuit and the wiring terminal 500 are respectively arranged in different sealing cavities, so that even if liquid enters the wiring sealing cavity 102 due to the fact that wiring of an operator is not standard in the installation process of the electronic breaker, the contact between the liquid and the control circuit can be avoided, the control circuit is protected, and the waterproof performance of the electronic breaker is improved. In addition, the electronic circuit breaker can not be disassembled and assembled to form the shell part of the electronic control sealing cavity 103 in the installation process, so that the electronic circuit breaker is beneficial to preventing the sealing performance of the electronic control sealing cavity 103 from being damaged in the installation process of the electronic circuit breaker, further beneficial to ensuring the sealing performance of the electronic control sealing cavity 103 and improving the reliability of the sealing performance of the electronic circuit breaker.

According to some alternative embodiments, the separator 130 has a wire passage. The wire-passing path is used for installing a wire connecting the control circuit and the terminal 500. Illustratively, the wire passing path may be a through hole or a through slot penetrating the separator 130 so that a line connecting the control circuit and the terminal 500 may penetrate the separator 130 along the wire passing path.

In some alternative embodiments, as shown in fig. 2 and 3, the electronic circuit breaker further comprises a first seal 600. The housing 100 has a wiring hole 105. The wire connection hole 105 penetrates through the cavity wall of the wire connection sealing cavity 102 to communicate with the wire connection sealing cavity 102, so that a cable of an external circuit can penetrate into the wire connection sealing cavity 102 along the wire connection hole 105 and be connected with the wire connection 500 in the wire connection sealing cavity 102. In some alternative embodiments, the wire aperture 105 is opposite one of the terminals 500 within the wire containment chamber 102 to facilitate connection of an external cable to the terminal 500 within the wire containment chamber 102. For example, one of the wire connection holes 105 may be opposite to one or more wire connection parts of the same terminal 500.

Referring to fig. 4, in some alternative embodiments, one wire sealing cavity 102 is provided with at least two wire holes 105, respectively. Illustratively, the wire connection holes 105 corresponding to the same wire connection seal cavity 102 are each opposite the wire connection 500 within the wire connection seal cavity 102 so that an external cable may be inserted into the wire connection seal cavity 102 along the wire connection holes 105 and correspondingly connected to the wire connection 500 within the wire connection seal cavity 102. In some alternative embodiments, the wire connection holes 105 corresponding to the same wire connection sealing cavity 102 are in one-to-one correspondence with the wire connection portions of the wire connection terminals 500 in the wire connection sealing cavity 102, so as to achieve wire combination and wire separation.

In some alternative embodiments, the first seal 600 is disposed in the wire connection hole 105, and the first seal 600 may be in sealing engagement with the housing 100 and the cable connected to the terminal 500, respectively. By way of example, the first seal 600 may be, but is not limited to, a sealing ring, a sealing boot, and/or a gasket disposed in the wiring aperture 105.

In the above-described embodiment, the fitting gap between the external cable and the housing 100 may be sealed by the first seal 600 to ensure that the sealing performance of the wire sealing chamber 102 can be maintained after the external cable is inserted into the wire sealing chamber 102.

Referring to fig. 2 and 3, according to some alternative embodiments, the electronic circuit breaker further comprises a second seal 700. The housing 100 has an adjustment aperture 104. Illustratively, the tuning hole 104 communicates with the wire sealing cavity 102 through a cavity wall of the wire sealing cavity 102, and the tuning hole 104 is opposite to the terminal 500 so as to tune the reliability of the connection between the cable of the external circuit and the terminal 500 through the tuning hole 104. Illustratively, as shown in FIG. 1, the second seal 700 has a connection 710. The connection portion 710 is connected to the housing 100 to prevent the second seal 700 from being separated from the housing 100 after being in contact and sealing engagement with the adjustment aperture 104, which is beneficial for preventing the second seal 700 from being lost. By way of example, the connection 710 may be, but is not limited to, a cover hinged to the housing 100 as a connecting string.

As illustrated in fig. 2 and 3, the terminal 500 includes a fastener and a connection terminal. Illustratively, the fastener is coupled to the connection terminal and the fastener is screw-engaged with the connection terminal to fix the cable inserted into the wire sealing cavity 102 and the connection terminal by twisting the fastener, thereby improving the reliability of the connection of the terminal 500 with the external circuit cable. Illustratively, the fastener may be, but is not limited to being, a screw. In an alternative example, 104 is opposite the fastener to be tightened by a screwdriver to tighten the cable and the terminal.

In some alternative embodiments, the terminals 500 in the electronic circuit breaker include an in terminal and an out terminal. Illustratively, the access terminals include a live wire terminal and a neutral wire terminal. Wherein at least one of the live and neutral terminals is adapted to be connected to a power source 460 for providing power to a control circuit in the electronic circuit breaker. In a further alternative embodiment the outlet terminal comprises only a live wire terminal. Thus, during the circuit installation process, only the live wire is required to pass through the electronic circuit breaker. Illustratively, referring to fig. 5, the neutral wire trace is disposed outside of the housing 100, which is beneficial for conserving the internal space of the electronic circuit breaker so that the electronic circuit breaker can be made smaller.

In some embodiments, the in-and out-terminals in the electronic circuit breaker each include a live wire terminal and a neutral wire terminal. For example, referring to fig. 4 and 6, a neutral wire may be inserted into the housing 100 during the circuit layout process. In some preferred embodiments, an electronically controlled switch is provided between the neutral terminal in the access terminal and the neutral terminal in the corresponding connected outlet terminal to control the on-off of the circuit between the neutral terminal in the access terminal and the neutral terminal in the corresponding connected outlet terminal by the electronically controlled switch. In some alternative embodiments, a set of neutral terminals corresponds to a set of live terminals. Illustratively, in the event that detection device 430 detects a failure of the circuit to which a set of live terminals is connected, controller 420 synchronously controls the opening of the electronically controlled switch between the set of subsequent terminals and the electronically controlled switch between the set of neutral terminals corresponding thereto. In this way, it is beneficial to improve the reliability of the electronic circuit breaker.

In a second aspect, the present application provides a protection circuit. The protection circuit can be used in the electronic circuit breaker according to the application. Illustratively, the protection circuit 400 includes an electronically controlled switch 410, a controller 420, and a detection device 430. An electronically controlled switch 410 is connected between two terminals 500. The terminals 500 in the electronic circuit breaker include live wire terminals, the detecting device 430 is disposed between the two live wire terminals, and the detecting device 430 is used for collecting current information passing between the two live wire terminals. The controller is connected to the detecting device and the electric control switch 410, and the controller 420 can control the electric control switch 410 to be turned off according to the current information collected by the detecting device 430. The protection circuit 400 can automatically open the electric control switch 410 between the two live wire terminals under the condition that the current passing through the circuit between the two live wire terminals is excessive, so as to achieve the purpose of protecting the circuit.

In some alternative embodiments, multiple sets of live terminals are included in an electronic circuit breaker. Each set of the live wire terminals is connected through a circuit so that the live wire terminals of each set can be conducted. Illustratively, each set of live terminals includes an in-live terminal and an out-live terminal. Specifically, the access live wire terminal may be connected to a power circuit. The outgoing live wire terminal may be connected to a powered circuit. In this way, the power supply can be connected to the supplied electrical circuit through a set of live terminals in the electronic circuit breaker.

In some alternative embodiments, the protection circuit 400 includes a plurality of electrically controlled switches 410 and a plurality of detection devices 430, one detection device 430 corresponding to each electrically controlled switch 410. The electric control switch 410 is disposed in a line connecting the two live wire terminals, and the electric control switch 410 is used for controlling on-off of the line connecting the two live wire terminals. Illustratively, the electrically controlled switch 410 is disposed between two of the two live terminals in one of the sets of live terminals in the electronic circuit breaker to control the opening and closing of the electrical circuit between the two live terminals via the electrically controlled switch 410. The detection device 430 is configured to collect current information of the line on which the corresponding electronically controlled switch 410 is located. The controller 420 can control the corresponding electric control switch 410 to be turned off according to the current information collected by the detecting device 430.

In the above embodiments, the protection circuit 400 may be adapted to control the terminals of the circuit between sets of live terminals. And the protection circuit 400 can independently control the on-off of the circuit between the corresponding groups of the fire wire terminals according to the current magnitude in the circuit between each group of the fire wire terminals. Therefore, under the condition that a certain group of live wire terminal connection circuits fail, only the circuits among the group of live wire terminals are required to be disconnected, and the circuit is not required to be completely disconnected, so that the normal operation of the circuits connected with other groups of live wire terminals is guaranteed.

In some alternative embodiments, electronically controlled switch 410 is a relay. This embodiment uses a relay as the electronically controlled switch 410 for controlling the on-off of the fire wire, with fast switching speed and isolation between control and switch. Therefore, under the condition of high-current output, the switch is closed and generates little heat, and is suitable for controlling high voltage and high current.

Referring to fig. 6, in some alternative embodiments, electronically controlled switch 410 includes a thyristor 411 and an optocoupler 412. Illustratively, the thyristor 411 is connected between two hot wire terminals, and the thyristor 411 is connected to the controller 420 through an optocoupler 412. Specifically, the controller 420 may control the on/off of the thyristor 411 through the optocoupler 412 in an isolated manner. In this embodiment, the thyristor 411 controls the end of the circuit between the two terminals, which is beneficial to prevent arcing during the end of the circuit. And has the advantages of switching speed block and low power consumption.

It should be noted that the types of the electrically controlled switch 410 are numerous, and for this reason, the embodiment of the present application does not describe the specific types of the electrically controlled switch 410 one by one.

In some alternative embodiments, protection circuit 400 also includes a power supply 460. Illustratively, the power supply 460 is an ACDC non-isolated power supply. This is beneficial for reducing the space occupied by the protection circuit 400 and also for increasing the maximum power output by the protection circuit 400.

In some alternative embodiments, the detection device 430 may be, but is not limited to being, a current transformer. The current transformer can realize the conversion from strong current to weak current to serve as a sensing component with a current detection function, has an isolation function, and is high in response speed and detection precision, and can not be burnt out due to overlarge current.

In some alternative embodiments, the electronic circuit breaker provided by the application comprises a plurality of groups of zero terminals, and one group of zero terminals corresponds to one group of live wire terminals one by one. Illustratively, an electronically controlled switch 410 is provided in the circuit between two neutral terminals in each set of neutral terminals to enable the circuit between the two neutral terminals to be turned on or off by electronically controlled switch 410. For example, in the event of a failure in the circuit in which one set of the live terminals is connected, the controller 420 may control not only the electrically controlled switch 410 connected between the live terminals to open, but also the electrically controlled switch 410 between the neutral terminals corresponding to the live terminals to open. This is beneficial for improving the reliability of the electronic circuit.

Referring to fig. 4 to 6, the protection circuit 400 includes a neutral 470 and a fire wire 480. Illustratively, the various electronic components in the protection circuit 400 may be connected by a neutral 470 and/or a hot 480. In the case of a protection circuit for an electronic circuit breaker, the electronic components in the protection circuit 400 may be directly or indirectly connected to the terminal 500 through the neutral 470 and/or hot wire. Illustratively, the neutral 470 connects the neutral terminal. The fire wire 480 is connected to the fire wire terminal.

In some alternative embodiments, protection circuit 400 also includes multiple sets of indicator lights 450. Each set of indicator lights 450 has an alarm state and an operational state. One electronically controlled switch 410 corresponds to a set of indicator lights 450. In the case where the electronically controlled switch 410 is turned on, the group of indicator lamps 450 corresponding to the electronically controlled switch 410 is switched to an operating state, i.e., a state in which a voltage can be normally output through the protection circuit 400. In the case where the electronically controlled switch 410 is turned off, a set of indicator lamps 450 corresponding to the electronically controlled switch 410 are switched to an alarm state, i.e., enter a protection state, and power output is turned off.

It should be noted that the electronic circuit breaker may be used for one, two or more sets of live wire protection. For this reason, the present embodiment does not limit the number of groups of electronic circuit breakers for fire wire protection.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model.

Claims (10)

1. An electronic circuit breaker is characterized by comprising a shell (100), a first circuit board (200) and a second circuit board (300), wherein the first circuit board (200) is connected with the second circuit board (300), the first circuit board and the second circuit board are used for arranging a protection circuit (400), and the protection circuit can control the on-off of a circuit passing through the electronic circuit breaker;

The housing (100) has a housing chamber (101), the first circuit board (200) and the second circuit board (300) are disposed in the housing chamber (101), and the second circuit board (300) is located at one side of the first circuit board (200) in the thickness direction.

2. The electronic circuit breaker according to claim 1, characterized in that the plane of the first circuit board (200) is perpendicular or parallel to the plane of the second circuit board (300).

3. The electronic circuit breaker according to claim 1, characterized in that the first circuit board (200) and the second circuit board (300) are detachably electrically connected.

4. An electronic circuit breaker according to any of claims 1 to 3, characterized in that the protection circuit (400) comprises an electrically controlled switch (410), a controller (420), a detection device (430) and an operating switch (440), the first circuit board (200) being arranged for arranging the electrically controlled switch (410) and the detection device (430), the second circuit board (300) being arranged for arranging the controller (420) and the operating switch (440).

5. The electronic circuit breaker according to claim 4, characterized in that the bottom of the housing (100) has a mounting portion (110), the housing (100) is fixedly mounted on a predetermined carrier by means of the mounting portion (110), the plane of the first circuit board (200) is perpendicular to the plane of the bottom of the housing (100), and/or,

The top of the shell (100) is provided with an operation part (120), the second circuit board (300) is arranged on the top side of the accommodating cavity (101), the plane of the second circuit board (300) is parallel to the plane of the top of the shell (100), and the operation switch (440) is opposite to the operation part (120).

6. An electronic circuit breaker according to any of claims 1 to 3 further comprising a terminal (500), wherein a partition (130) is provided in the housing (100) and a wiring sealing chamber (102) and an electronic control sealing chamber (103) are formed at intervals by the partition (130),

The wiring terminal (500) is arranged in the wiring sealing cavity (102), and the electronic circuit breaker is connected with an external circuit through the wiring terminal (500),

The first circuit board and the second circuit board are arranged in the electric control sealing cavity (103), and at least one of the first circuit board (200) and the second circuit board (300) is connected with the wiring terminal (500).

7. The electronic circuit breaker according to claim 6, further comprising a first seal (600), wherein the housing (100) has a wiring hole (105), wherein the wiring hole (105) penetrates a cavity wall of the wiring seal cavity (102) and communicates with the wiring seal cavity (102), wherein the first seal (600) is disposed in the wiring hole (105), and wherein the first seal (600) is sealingly engageable with the housing (100) and a cable connected to the terminal (500), respectively.

8. A protection circuit for an electronic circuit breaker according to any one of claims 1 to 7, comprising an electrically controlled switch (410), a controller (420) and a detection device (430), said electrically controlled switch (410) being connected between two terminals,

The wiring terminal (500) in the electronic circuit breaker comprises a live wire terminal, the detection device (430) is arranged between the two live wire terminals, and the detection device (430) is used for collecting current information passing between the two live wire terminals;

The controller (420) is respectively connected with the detection device and the electric control switch (410), and the controller (420) can control the electric control switch (410) to be disconnected according to current information collected by the detection device (430).

9. The protection circuit according to claim 8, wherein the protection circuit comprises a plurality of the electrically controlled switches (410) and a plurality of the detecting means (430), one of the detecting means (430) corresponding to one of the electrically controlled switches (410),

The electric control switch (410) is arranged in a circuit connected with the two live wire terminals, and the electric control switch (410) is used for controlling the on-off of the circuit connected with the two live wire terminals; the detection device (430) is configured to collect current information of a line where the corresponding electric control switch (410) is located;

the controller (420) can control the corresponding electric control switch (410) to be disconnected according to the current information acquired by the detection device.

10. The protection circuit of claim 9, further comprising a plurality of sets of indicator lights (450), each set of indicator lights (450) having an alarm state and an operational state, one of the electronically controlled switches (410) corresponding to each set of indicator lights (450),

When the electric control switch (410) is closed and conducted, a group of indicator lamps (450) corresponding to the electric control switch (410) are switched to an operating state;

When the electric control switch (410) is turned off, a group of the indicator lamps (450) corresponding to the electric control switch (410) are switched to an alarm state.