Electronic circuit breaker and protection circuit thereof

Abstract

The utility model discloses an electronic circuit breaker and a protection circuit thereof. The electronic circuit breaker comprises a shell, 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 laying a protection circuit. And 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 layout areas of the protection circuit are not in the same plane, the size of the circuit board is reduced, and the assembly compactness of all parts in the electronic circuit breaker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, in particular to an electronic circuit breaker and a protection circuit thereof. Background Art

[0002] Smart street lights are a new type of street light that is based on road lighting poles and integrates public security, traffic signals, communications, traffic signs, etc., to achieve multiple poles in one, reduce road poles, and release public space resources.

[0003] With the widespread application of smart street lamps, new requirements are put forward for the reliability of the power supply control system inside the smart street lamps. In the prior art, smart street lamps are provided with electronic circuit breakers to protect the power supply lines in the smart street lamps in the event of a circuit failure.

[0004] In the related art, the electronic circuit breaker is relatively large in size and requires sufficient space at the installation location, which makes it unable to adapt to street lamps or other equipment with small internal space. Utility Model Content

[0005] The utility model discloses an electronic circuit breaker and a protection circuit thereof, so as to solve the technical problem of poor waterproof performance of the electronic circuit breaker in the related technology.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] 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 and the second circuit board are connected, and the first circuit board and the second circuit board are used to lay out a protection circuit. The protection circuit can control the on and off of a line passing through the electronic circuit breaker. The housing has a receiving cavity, the first circuit board and the second circuit board are arranged in the receiving cavity, and the second circuit board is located on one side of the first circuit board in the thickness direction.

[0008] The technical solution adopted by the utility model can achieve the following beneficial effects:

[0009] In the electronic circuit breaker provided by the present application, the protection circuit is arranged on two circuit boards respectively, that is, at least part of the protection circuit is arranged on the first circuit board and the second circuit board. In this way, it is possible to avoid the protection circuit being arranged along the same plane, and then the wiring area of ​​a single circuit board can be reduced when the wiring area of ​​the protection circuit is constant. Therefore, this embodiment is beneficial to reducing the area of ​​a single circuit board. The first circuit board and the second circuit board are connected so that part of the circuit on the first circuit board and part of the circuit on the second circuit board can constitute a protection circuit, so as to realize the association between the circuit on the first circuit board and the circuit on the second circuit board, and ensure the integrity between the parts of the protection circuit. The first circuit board is arranged on one side of the thickness direction of the second circuit board, so that the plane where the first circuit board is located is not coplanar with the plane where the second circuit board is located, and then it is beneficial to make full use of the space on one side of the thickness direction of the second circuit board, so that the protection circuit layout is more compact in space. Therefore, this scheme is beneficial to reducing the volume of the electronic circuit breaker so as to be suitable for a smaller installation space.

[0010] According to some optional embodiments, the plane where the first circuit board is located is perpendicular or parallel to the plane where the second circuit board is located.

[0011] According to some optional embodiments, the first circuit board and the second circuit board are detachably electrically connected.

[0012] According to some optional embodiments, the first circuit board is provided with a first plug-in connector, and the second circuit board is provided with a second plug-in connector. The first circuit board and the second circuit board are detachably electrically connected via the first plug-in connector and the second plug-in connector.

[0013] According to some optional embodiments, the protection circuit includes an electric control switch, a controller, a detection device and an operation switch. The first circuit board is used to arrange the electric control switch and the detection device. The second circuit board is used to arrange the controller and the operation switch.

[0014] According to some optional embodiments, the bottom of the housing has a mounting portion. The housing is fixedly mounted on a preset carrier through the mounting portion. The plane where the first circuit board is located is perpendicular to the plane where the bottom of the housing is located.

[0015] According to some optional embodiments, the top of the housing has an operating portion. The second circuit board is arranged on the top side of the accommodating cavity, and the plane where the second circuit board is located is parallel to the plane where the top of the housing is located, and the operating switch is opposite to the operating portion.

[0016] According to some optional embodiments, the electronic circuit breaker further includes a wiring terminal. A partition is provided in the housing, and a wiring sealed cavity and an electric control sealed cavity are formed by partitioning the partition. The wiring terminal is provided in the wiring sealed cavity, and the electronic circuit breaker is connected to an external circuit through the wiring terminal. The first circuit board and the second circuit board are provided in the electric control sealed cavity, and at least one of the first circuit board and the second circuit board is connected to the wiring terminal.

[0017] According to some optional embodiments, the electronic circuit breaker further comprises a first sealing member. The housing has a wiring hole. The wiring hole penetrates through the cavity wall of the wiring sealed cavity and communicates with the wiring sealed cavity. The first sealing member is disposed in the wiring hole, and the first sealing member can be respectively sealed with the housing and the cable connected to the wiring terminal.

[0018] On the other hand, the present application also provides a protection circuit. The protection circuit can be used for the electronic circuit breaker provided in the present application. The protection circuit includes: an electric control switch, a controller and a detection device. The electric control switch is connected between two terminals. The terminals in the electronic circuit breaker include live wire terminals. The detection device is arranged between the two live wire terminals, and the detection device is used to collect current information passing between the two live wire terminals. The controller is respectively connected to the detection device and the electric control switch, and the controller can control the electric control switch to disconnect according to the current information collected by the detection device.

[0019] According to some optional embodiments, the protection circuit includes a plurality of electric control switches and a plurality of detection devices. One detection device corresponds to one electric control switch. The electric control switch is arranged in a circuit connecting two live wire terminals, and the electric control switch is used to control the on and off of the circuit connecting the two live wire terminals. The detection device is configured to collect current information of the circuit 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.

[0020] According to some optional embodiments, the protection circuit further includes multiple groups of indicator lights, each group of indicator lights has an alarm state and an operating state, and one electric control switch corresponds to one group of indicator lights. When the electric control switch is closed and turned on, the group of indicator lights corresponding to the electric control switch is switched to the operating state. When the electric control switch is disconnected, the group of indicator lights corresponding to the electric control switch is switched to the alarm state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a schematic diagram of an electronic circuit breaker provided by some optional embodiments of the present application;

[0023] Figure 2 It is a schematic diagram of an electronic circuit breaker provided by some optional embodiments of the present application after the cover is opened;

[0024] Figure 3is an exploded schematic diagram of an electronic circuit breaker provided in some optional embodiments of the present application;

[0025] Figure 4 The following are schematic diagrams of protection circuits provided in some optional embodiments of the present application. Figure 1 ;

[0026] Figure 5 The following are schematic diagrams of protection circuits provided in some optional embodiments of the present application. Figure 2 ;

[0027] Figure 6 The following are schematic diagrams of protection circuits provided in some optional embodiments of the present application. Figure 3 .

[0028] Description of reference numerals:

[0029] 100-housing; 101-accommodating chamber; 102-wiring sealed chamber; 103-electrically controlled sealed chamber; 104-adjusting hole; 105-wiring hole; 110-installing part; 120-operating part; 130-partition; 140-cover plate; 150-main body; 200-first circuit board; 300-second circuit board; 400-protection circuit; 410-electrically controlled switch; 411-thyristor; 412-optical coupler; 420-controller; 430-detection device; 440-operating switch; 450-indicator light; 460-power supply; 470-neutral line; 480-live line; 500-wiring terminal; 600-first sealing member; 700-second sealing member; 710-connecting part. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0031] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0032] In the related art, the protection circuit in the electronic circuit breaker is integrated on the same circuit board. And the circuit board is arranged inside the housing. In this way, the size of the housing in the plane where the circuit board is located is larger than the size of the circuit board. Therefore, the size of the electronic circuit breaker is affected by the size of the circuit board, making the overall size of the electronic circuit breaker larger, and thus cannot be installed in some narrow spaces.

[0033] In view of the above problems, the present application provides an electronic circuit breaker and a protection circuit thereof. The electronic circuit breaker arranges the protection circuit on two circuit boards, and arranges one circuit board on one side of the other circuit board in the thickness direction. This is beneficial to fully utilize the space in the housing and improve the compactness of the assembly between the electronic components in the protection circuit. Therefore, the solution is beneficial to reduce the volume of the electronic circuit breaker so that it is suitable for installation in some smaller spaces.

[0034] The following is combined with Figures 1 to 4 , the electronic circuit breaker and the protection circuit thereof provided in the embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0035] In a first aspect, the present application provides an electronic circuit breaker that can be used to connect to a circuit and disconnect the circuit when a circuit fault occurs to protect electrical devices in the circuit.

[0036] Reference Figure 1 and Figure 2 The electronic circuit breaker provided in the present application includes a housing 100, a first circuit board 200 and a second circuit board 300. The housing 100 is a basic structural component that can provide a mounting base for other components.

[0037] 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 to lay out the protection circuit 400. The protection circuit 400 can control the on-off of the line passing through the electronic circuit breaker. Exemplarily, a part of the protection circuit 400 is arranged on the first circuit board 200, and the other part is arranged on the second circuit board 300, and the first circuit board 200 and the second circuit board 300 are connected so that the protection circuit 400 arranged on the first circuit board 200 and the protection circuit 400 arranged on the second circuit board 300 can be associated to form a complete circuit for controlling the on-off of the line passing through the electronic circuit breaker. Exemplarily, the first circuit board 200 and the second circuit board 300 can be electrically connected by, but not limited to, a wire and / or a metal probe.

[0038] Reference Figure 2The housing 100 has a housing cavity 101. The first circuit board 200 and the second circuit board 300 are disposed in the housing cavity 101, and the second circuit board 300 is located on one side of the thickness direction of the first circuit board 200. The thickness direction of the first circuit board 200 is the normal direction of the wiring surface of the first circuit board 200. For example, the thickness direction of the first circuit board 200 is Figure 2 Exemplarily, the second circuit board 300 is located on one side of the first circuit board 200 in the thickness direction. It should be understood that at least part of the second circuit board 300 overlaps with the first circuit board 200 in the thickness direction of the first circuit board 200, that is, the projection of the second circuit board 300 along the thickness direction of the first circuit board 200 on the plane where the first circuit board 200 is located is at least partially located on the first circuit board 200.

[0039] In the above embodiment, the second circuit board 300 is arranged on one side of the first circuit board 200 in the thickness direction, thereby avoiding the protection circuit 400 from being wired along the same plane, and making full use of the space in the thickness direction of the first circuit board 200, which is beneficial to improving the compactness of the distribution between the components in the electronic circuit breaker and reducing the volume of the electronic circuit breaker.

[0040] In some optional embodiments, the accommodating chamber 101 is a closed space to prevent external dust and / or liquid from entering the accommodating chamber 101, thereby being beneficial to improving the dustproof and waterproof performance of the electronic circuit breaker to adapt to more working environments.

[0041] According to some optional embodiments, referring to Figure 2 and Figure 3 , the plane where the first circuit board 200 is located is perpendicular to the plane where the second circuit board 300 is located. Exemplarily, the plane where the first circuit board 200 is located may be the plane where the surface of one side in the thickness direction of the first circuit board 200 is located. Similarly, the plane where the first circuit board 200 is located may be the plane where the surface of one side in the thickness direction of the second circuit board 300 is located.

[0042] In the above embodiment, the plane where the first circuit board 200 is located is perpendicular to the plane where the second circuit board 300 is located, so as to facilitate the connection between the first circuit board 200 and the second circuit board 300. The plane where the first circuit board 200 is located is perpendicular to the plane where the second circuit board 300 is located, which is beneficial to reducing the moment received at the connection between the first circuit board 200 and the second circuit board 300, and improving the reliability of the connection between the first circuit board 200 and the second circuit board 300. In addition, the vertical arrangement of the first circuit board 200 and the second circuit board 300 is also beneficial to adapt to the internal accommodating cavity 101 of the housing 100.

[0043] According to some optional embodiments, the second circuit board 300 is disposed adjacent to the edge of the first circuit board 200, which is beneficial to adapting to the structure of the accommodating cavity 101, so that the first circuit board 200 and the second circuit board 300 can be respectively supported on two connected inner side walls of the accommodating cavity 101. In some optional embodiments, the first circuit board 200 and the second circuit board 300 are both disposed close to the cavity wall of the accommodating cavity 101, which is beneficial to prevent the first circuit board 200 and / or the second circuit board 300 from dividing the accommodating cavity 101 into multiple cavities, and improve the compactness of the assembly between the first circuit board 200, the second circuit board 300 and the housing 100.

[0044] The side with the solder pads in the first circuit board 200 and the second circuit board 300 is a soldering side. For example, the soldering side is an SMT (Surface Mounted Technology) side.

[0045] In some optional embodiments, when the electronic components on the first circuit board 200 are plug-in electronic components, the second circuit board 300 is located on the side of the first circuit board 200 away from the welding surface. It should be noted that for the plug-in electronic components installed on the first circuit board 200, the pins need to pass through the first circuit board 200 and then be welded to the pads of the welding surface. Although the sizes of different electronic components in the thickness direction of the first circuit board 200 are different, the heights of different plug-in electronic components after welding to the welding surface of the first circuit board 200 are basically the same. Therefore, this embodiment is beneficial to reduce the distance between the first circuit board 200 and the cavity wall of the accommodating cavity 101, and improve the compactness of the assembly of the first circuit board 200 and the housing 100.

[0046] In some optional embodiments, the first circuit board 200 and the second circuit board 300 can be fastened to the inner wall of the housing 100 by screws, buckles and / or slots. For this reason, the specific connection method between the first circuit board 200 and the second circuit board 300 and the housing 100 is not limited in this embodiment.

[0047] In some optional embodiments, electronic components with smaller height are arranged on one side of the second circuit board 300 adjacent to the first circuit board 200 and / or on one side of the first circuit board 200 adjacent to the second circuit board 300. This is beneficial to prevent the electronic components on the first circuit board 200 and the electronic components on the second circuit board 300 from interfering with each other in space.

[0048] In some optional embodiments, the plane where the first circuit board 200 is located is parallel to the plane where the second circuit board 300 is located. The first circuit board 200 and the second circuit board 300 are arranged in parallel, which is beneficial to improving the compactness of the assembly of the first circuit board 200 and the second circuit board 300. In some further optional embodiments, the side of the first circuit board 200 adjacent to the second circuit board 300 is the welding surface of the first circuit board 200. The side of the second circuit board 300 adjacent to the first circuit board 200 is the welding surface of the second circuit board 300. In this way, the wiring layer of the first circuit board 200 and / or the second circuit board 300 can 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 to reduce the mutual electromagnetic interference between the electronic components on the first circuit board 200 and the electronic components on the second circuit board 300. It should be noted that the wiring layer of the circuit board generally refers to the copper surface layer in the circuit board used to form a connection between the electronic components on each circuit board.

[0049] In some optional embodiments, the first circuit board 200 and the second circuit board 300 are detachably electrically connected. That is, the first circuit board 200 and the second circuit board 300 are detachable. In this way, during the preparation of the product, the first circuit board 200 and the second circuit board 300 can be fed separately and independently. Specifically, during 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, which is beneficial to prevent the connection between the first circuit board 200 and the second circuit board 300 from being damaged during transportation and improve the yield rate of the product. In addition, the first circuit board 200 and the second circuit board 300 are detachably connected, which is beneficial to reduce the difficulty of disassembly and assembly of the first circuit board 200 and the second circuit board 300 and facilitate maintenance. In addition, in the case where one of the electronic components in the protection circuit 400 is damaged, only one of the circuit boards needs to be replaced, which is beneficial to reduce the cost of later maintenance.

[0050] In some optional 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 plugging and matching the first connector and the second connector. One of the first connector and the second connector is a pin and the other is a pin seat. Exemplarily, the first connector is a pin header and the other is a female header.

[0051] In the above embodiment, the first circuit board 200 and the second circuit board 300 are connected by plugging and matching the first connector and the second connector, which is helpful to simplify the difficulty of assembling the first circuit board 200 and the second circuit board 300.

[0052] Reference Figure 1 and Figure 3In some optional embodiments, the housing 100 includes a main body 150 and a cover plate 140. Exemplarily, the accommodating cavity 101 is disposed in the main body 150. The main body 150 has an installation opening, which is connected to the accommodating cavity 101. During the assembly of the electronic circuit breaker, the first circuit board 200 and the second circuit board 300 can enter the accommodating cavity 101 through the installation opening. Exemplarily, the installation opening is located on the side wall of the main body 150. Figure 3 The mounting opening is located on the side of the main body 150 in the opposite direction as shown by the y-axis.

[0053] In some optional embodiments, the first circuit board 200 is fixed to the inner wall of the accommodating cavity 101 opposite to the mounting opening. The second circuit board 300 is perpendicular to the first circuit board 200. Exemplarily, the first circuit board 200 can be fastened to the housing 100 by screws. In a further optional embodiment, a mounting groove is provided in the housing 100, and the mounting groove extends in a direction perpendicular to the plane where the mounting opening is located. Exemplarily, at least part of the second circuit board 300 is embedded in the mounting groove to achieve fastening of the second circuit board 300 to the housing 100.

[0054] In the above implementation, the first circuit board 200 can be firstly fastened to a preset position in the housing 100 by screws, and then the second circuit board 300 can be pushed into the accommodating cavity 101 along the installation groove, so that the second circuit board 300 can be connected with the first circuit board 200 by plugging and fitting, and can be clamped with the housing 100. Therefore, in the above embodiment, the installation groove can not only provide a guide for the installation of the second circuit board 300, reduce the difficulty of the second circuit board 300 and the first circuit board 200 to be aligned and plugged, but also can be used to realize the second circuit board 300 to be clamped on the housing 100. In addition, in the above embodiment, after the first circuit board 200 and the second circuit board 300 are connected by plugging and fitting, they can both be supported by the housing 100. In this way, during the organization or transportation of the electronic circuit breaker, it is beneficial to reduce the stress on the connection structure between the first circuit board 200 and the second circuit board 300, and improve the reliability of the electrical connection between the first circuit board 200 and the second circuit board 300.

[0055] According to some optional embodiments, the protection circuit 400 includes a low voltage circuit and a high voltage circuit. The first circuit board 200 is used to lay out the high voltage circuit part of the protection circuit 400. The second circuit board 300 is used to lay out the low voltage circuit part of the protection circuit 400. Figure 4 In some optional embodiments, the protection circuit 400 further includes a power supply 460. Exemplarily, the power supply 460 can be used to convert high voltage electricity into low voltage electricity to provide power to the low voltage line portion. In some optional embodiments, the power supply 460 is an ACDC non-isolated power supply, which is beneficial to reducing the space occupied by the power supply 460 and also beneficial to increasing the output power of the power supply 460.

[0056] Reference Figures 1 to 3 According to some optional embodiments, the protection circuit 400 includes an electric control switch 410, a controller 420, a detection device 430 and an operating switch 440. The first circuit board 200 is used to arrange the electric control switch 410 and the detection device 430. The second circuit board 300 is used to arrange the controller 420 and the operating switch 440. Exemplarily, the controller 420 can be but not limited to a single-chip microcomputer. The operating switch 440 is a low-voltage switch, which is mainly used to achieve human-computer interaction. Specifically, the operating state of the electronic circuit breaker can be adjusted by the operating switch 440. Exemplarily, the operating switch 440 can be but not limited to a press switch. In actual application, the state of the electronic circuit breaker can be switched by pressing the operating switch 440 to adjust the on-off condition of the line passing through the electronic circuit breaker.

[0057] In the above embodiment, the high voltage circuit and the low voltage circuit in the protection circuit 400 can be respectively arranged on two different circuit boards, thereby facilitating isolation between the high voltage circuit and the low voltage circuit and improving the reliability of the electronic circuit breaker.

[0058] Exemplarily, the operation switch 440 uses a horizontal light touch button as a protection elimination function. A high level indicates that the controller 420 can normally detect leakage, overcurrent and short circuit functions. A low level clears the protection state.

[0059] Reference Figure 2 and Figure 3 , the bottom of the housing 100 has a mounting portion 110. The housing 100 is fixedly mounted on a preset carrier through the mounting portion 110. Specifically, in actual application, the preset carrier may be, but is not limited to, an electrical box or a wall. Exemplarily, the housing 100 may be snap-connected, screw-connected, and / or bonded to the preset carrier through the mounting portion 110. The plane where the first circuit board 200 is located is perpendicular to the plane where the bottom of the housing 100 is located. The first circuit board 200 is perpendicular to the plane where the bottom of the housing 100 is located, so that when liquid enters the housing 100, it is beneficial to reduce the amount of liquid soaking the first circuit board 200, and further to protect the first circuit board 200. 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 further to reducing the area of ​​the mounting surface of the preset carrier occupied by the electronic circuit breaker to adapt to a smaller installation space.

[0060] In some optional embodiments, referring to Figure 1 and Figure 2, the top of the housing 100 has an operating portion 120. Exemplarily, the operating portion 120 can provide an operating space for an operator to manually adjust the working state of the electronic circuit breaker. Exemplarily, the second circuit board 300 is disposed on the top side of the accommodating cavity 101. The plane where the second circuit board 300 is located is parallel to the plane where the top of the housing 100 is located, and the operating switch 440 is opposite to the operating portion 120.

[0061] In some optional embodiments, the operating portion 120 is provided with an escape opening, and the operating switch 440 is opposite to the escape opening of the operating portion 120, so that the operator can directly adjust the state of the operating switch 440 to adjust the working state of the electronic circuit breaker. In other optional embodiments, the operating portion 120 can be a flexible film made of a flexible material. In this way, the operator can directly press the operating portion 120, so that the operating portion 120 is deformed and then triggers the operating switch 440, so as to adjust the working state of the electronic circuit breaker through the operating switch 440.

[0062] In the above embodiment, the second circuit board 300 is disposed on the top side of the accommodating cavity 101 , which can prevent the liquid from wetting the second circuit board 300 after the liquid enters the accommodating cavity 101 , thereby being beneficial to protecting the second circuit board 300 .

[0063] In some optional embodiments, referring to Figure 2 and Figure 3 , the electronic circuit breaker also includes a terminal 500. A partition 130 is provided in the housing 100, and a wiring sealed cavity 102 and an electric control sealed cavity 103 are formed by partitioning through the partition 130. The terminal 500 is provided in the wiring sealed cavity 102, and the electronic circuit breaker is connected to an external circuit through the terminal 500. Exemplarily, the terminal 500 can be a wiring terminal. Specifically, there are many types of wiring terminals, and for this reason, this embodiment does not limit the specific type of the terminal 500.

[0064] In some optional embodiments, the first circuit board 200 and the second circuit board 300 are disposed in the electric control sealed cavity 103 , and at least one of the first circuit board 200 and the second circuit board 300 is connected to the wiring terminal 500 .

[0065] In the above-mentioned embodiment, the wiring sealed cavity 102 is beneficial to prevent liquid from entering and contacting the terminal 500, and is further beneficial to protecting the reliability of the connection between the terminal 500 and the external circuit. However, the standardization of the wiring between the external circuit and the terminal 500 and the repeated disassembly of the external connection circuit during the maintenance process may affect the sealing performance of the wiring sealed cavity 102. Therefore, in some extreme cases, the sealing performance of the wiring sealed cavity 102 is poor due to the irregular wiring, which makes it easy for liquid to enter the wiring sealed cavity 102. In the circuit breaker provided in the present application, the control circuit and the terminal 500 are respectively arranged in different sealed cavities. In this way, even if liquid enters the wiring sealed cavity 102 due to the operator's irregular wiring during the installation of the electronic breaker, it can also prevent the liquid from contacting the control circuit, which is beneficial to protecting the control circuit and improving the waterproof performance of the electronic circuit breaker. In addition, the shell part of the electronic circuit breaker forming the electric control sealed cavity 103 will not be disassembled during the installation process, which is beneficial to prevent the sealing performance of the electric control sealed cavity 103 from being damaged during the installation process of the electronic circuit breaker, and is beneficial to ensure the sealing performance of the electric control sealed cavity 103 and improve the reliability of the sealing performance of the electronic circuit breaker.

[0066] According to some optional embodiments, the partition 130 has a wire passage. The wire passage is used to install the line connecting the control circuit and the terminal 500. Exemplarily, the wire passage can be a through hole or a through groove that passes through the partition 130, so that the line connecting the control circuit and the terminal 500 can pass through the partition 130 along the wire passage.

[0067] In some optional embodiments, such as Figure 2 and Figure 3 As shown, the electronic circuit breaker further includes a first sealing member 600. The housing 100 has a wiring hole 105. The wiring hole 105 penetrates the cavity wall of the wiring sealed cavity 102 and communicates with the wiring sealed cavity 102, so that the cable of the external circuit can pass through the wiring sealed cavity 102 along the wiring hole 105 and connect with the wiring terminal 500 in the wiring sealed cavity 102. In some optional embodiments, the wiring hole 105 is opposite to a wiring terminal 500 in the wiring sealed cavity 102, so as to facilitate the connection of the external cable with the wiring terminal 500 in the wiring sealed cavity 102. Exemplarily, one wiring hole 105 can be opposite to one or more wiring parts of the same wiring terminal 500.

[0068] Reference Figure 4In some optional embodiments, at least two wiring holes 105 are correspondingly provided in one wiring sealed cavity 102. Exemplarily, the wiring holes 105 corresponding to the same wiring sealed cavity 102 are all opposite to the wiring terminals 500 in the wiring sealed cavity 102, so that the external cables can be inserted into the wiring sealed cavity 102 along the wiring holes 105 and connected to the wiring terminals 500 in the wiring sealed cavity 102. In some optional embodiments, the wiring holes 105 corresponding to the same wiring sealed cavity 102 correspond to the wiring parts of the wiring terminals 500 in the wiring sealed cavity 102 one by one, so as to realize the paralleling and branching of wires.

[0069] In some optional embodiments, the first sealing member 600 is disposed in the wiring hole 105, and the first sealing member 600 can be respectively sealed with the housing 100 and the cable connected to the wiring terminal 500. Exemplarily, the first sealing member 600 can be, but is not limited to, a sealing ring, a sealing sleeve and / or a sealing gasket disposed in the wiring hole 105.

[0070] In the above embodiment, the assembly gap between the external cable and the housing 100 can be sealed by the first sealing member 600 to ensure that the sealing performance of the wiring sealing cavity 102 can be maintained after the external cable is inserted into the wiring sealing cavity 102 .

[0071] Reference Figure 2 and Figure 3 According to some optional embodiments, the electronic circuit breaker further includes a second sealing member 700. The housing 100 has an adjustment hole 104. Exemplarily, the adjustment hole 104 penetrates the cavity wall of the wiring sealed cavity 102 and is connected to the wiring sealed cavity 102, and the adjustment hole 104 is opposite to the wiring terminal 500, so as to adjust the reliability of the connection between the cable of the external circuit and the wiring terminal 500 through the adjustment hole 104. Exemplarily, as Figure 1 As shown, the second sealing member 700 has a connecting portion 710. The connecting portion 710 is connected to the housing 100 to prevent the second sealing member 700 from being separated from the housing 100 after being in contact and sealed with the adjustment hole 104, which is beneficial to prevent the second sealing member 700 from being lost. Exemplarily, the connecting portion 710 can be, but is not limited to, a connecting rope or a cover body hinged to the housing 100.

[0072] For example, Figure 2 and Figure 3 As shown, the terminal 500 includes a fastener and a connecting terminal. Exemplarily, the fastener is connected to the connecting terminal, and the fastener and the connecting terminal are threadedly matched to fix the cable and the connecting terminal inserted into the wiring sealing cavity 102 by twisting the fastener, so as to improve the reliability of the connection between the terminal 500 and the external circuit cable. Exemplarily, the fastener can be but not limited to a screw. In an optional example, 104 is opposite to the fastener so that the fastener can be twisted by a screwdriver to fasten the cable and the terminal.

[0073] In some optional embodiments, the terminal 500 in the electronic circuit breaker includes an input terminal and an output terminal. Exemplarily, the input terminal includes a live wire terminal and a neutral wire terminal. Among them, at least one live wire terminal and a neutral wire terminal are used to connect to the power supply 460 to provide power to the control circuit in the electronic circuit breaker. In a further optional embodiment, the output terminal only includes a live wire terminal. In this way, during the circuit installation process, only the live wire needs to pass through the electronic circuit breaker. Exemplarily, refer to Figure 5 The neutral line is arranged outside the housing 100, which is beneficial to saving the internal space of the electronic circuit breaker and making the electronic circuit breaker smaller.

[0074] In some embodiments, the input terminal and the output terminal of the electronic circuit breaker both include a live wire terminal and a neutral wire terminal. Figure 4 and Figure 6 , during the circuit layout, the neutral wire can be connected to the housing 100. In some preferred embodiments, an electric control switch is provided between the neutral wire terminal in the access terminal and the corresponding neutral wire terminal in the connected output terminal, so as to control the on-off of the circuit between the neutral wire terminal in the access terminal and the corresponding neutral wire terminal in the connected output terminal through the electric control switch. In some optional embodiments, a group of neutral wire terminals corresponds to a group of live wire terminals. Exemplarily, when the detection device 430 detects that a circuit connected to a group of live wire terminals fails, the controller 420 synchronously controls the electric control switches between the subsequent terminals of the group and the electric control switches between the corresponding group of neutral wire terminals to disconnect. In this way, it is beneficial to improve the reliability of the electronic circuit breaker.

[0075] In the second aspect, the present application provides a protection circuit. The protection circuit can be used in the electronic circuit breaker described in the present application. Exemplarily, the protection circuit 400 includes an electric control switch 410, a controller 420 and a detection device 430. The electric control switch 410 is connected between two terminals 500. The terminals 500 in the electronic circuit breaker include live wire terminals, the detection device 430 is arranged between the two live wire terminals, and the detection device 430 is used to collect current information passing between the two live wire terminals. The controller is connected to the detection device and the electric control switch 410 respectively, and the controller 420 can control the electric control switch 410 to disconnect according to the current information collected by the detection device 430. The protection circuit 400 can automatically disconnect the electric control switch 410 between the two live wire terminals when the current of the circuit passing through the two live wire terminals is too large, so as to achieve the purpose of protecting the circuit.

[0076] In some optional embodiments, the electronic circuit breaker includes multiple groups of live wire terminals. Each group of live wire terminals is connected through a circuit so that each group of live wire terminals can be conductive. Exemplarily, each group of live wire terminals includes an incoming live wire terminal and an outgoing live wire terminal. Specifically, the incoming live wire terminal can be connected to a power supply circuit. The outgoing live wire terminal can be connected to a powered circuit. In this way, the power supply can be connected to the powered circuit through a group of live wire terminals in the electronic circuit breaker.

[0077] In some optional embodiments, the protection circuit 400 includes a plurality of electric control switches 410 and a plurality of detection devices 430, and one detection device 430 corresponds to one electric control switch 410. The electric control switch 410 is arranged in a circuit connecting two live wire terminals, and the electric control switch 410 is used to control the on-off of the circuit connecting the two live wire terminals. Exemplarily, the electric control switch 410 is arranged between two live wire terminals in one group of live wire terminals in the electronic circuit breaker, so as to control the on-off of the circuit between the two live wire terminals through the electric control switch 410. The detection device 430 is configured to collect current information of the circuit 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 collected by the detection device 430.

[0078] In the above embodiment, the protection circuit 400 can be used to control the on-off of the circuits between multiple groups of live wire terminals. And the protection circuit 400 can independently control the on-off of the circuits between the corresponding groups of live wire terminals according to the current size in the circuits between each group of live wire terminals. In this way, when a circuit connected to a group of live wire terminals fails, it is only necessary to disconnect the circuit between the group of live wire terminals, without disconnecting all of them, which is beneficial to ensure the normal operation of the circuits connected to other groups of live wire terminals.

[0079] In some optional embodiments, the electric control switch 410 is a relay. This embodiment uses a relay as the electric control switch 410 to control the on and off of the live wire, which has a fast switching speed and an isolation function between the control and the switch. In this way, under the condition of high current output, the switch generates less heat when closed; it is suitable for controlling high voltage and high current.

[0080] Reference Figure 6 In some optional embodiments, the electric control switch 410 includes a thyristor 411 and an optocoupler 412. Exemplarily, the thyristor 411 is connected between two live wire terminals, and the thyristor 411 is connected to the controller 420 through the optocoupler 412. Specifically, the controller 420 can isolate and control the on and off of the thyristor 411 through the optocoupler 412. In this embodiment, the thyristor 411 controls the on-end of the circuit between the two terminals, which is beneficial to prevent arcs from being generated during the on-end process of the circuit. And it has the advantages of fast switching speed and low power consumption.

[0081] It should be noted that there are many types of the electronically controlled switch 410 . Therefore, the embodiments of the present application will not describe the specific types of the electronically controlled switch 410 one by one.

[0082] In some optional embodiments, the protection circuit 400 further includes a power supply 460. Exemplarily, the power supply 460 is an ACDC non-isolated power supply. This is beneficial to reducing the space occupied by the protection circuit 400 and also beneficial to increasing the maximum power output by the protection circuit 400.

[0083] In some optional embodiments, the detection device 430 may be, but is not limited to, a current transformer. The current transformer can realize the conversion from strong current to weak current as a sensing component of the current detection function, has an isolation function, a fast response speed, high detection accuracy, and will not be burned due to excessive current.

[0084] In some optional embodiments, the electronic circuit breaker provided by the present application includes multiple groups of neutral terminals, and a group of neutral terminals corresponds to a group of live terminals one by one. Exemplarily, an electric control switch 410 is provided in the circuit between two neutral terminals in each group of neutral terminals, so as to realize the conduction or disconnection of the circuit between the two neutral terminals through the electric control switch 410. Exemplarily, in the case that a circuit connected to one group of live terminals fails, the controller 420 can not only control the electric control switch 410 connected between the live terminals to disconnect, but also control the electric control switch 410 between the neutral terminals corresponding to the live terminals to disconnect. This is beneficial to improving the reliability of the electronic circuit breaker.

[0085] Reference Figures 4 to 6 , the protection circuit 400 includes a neutral line 470 and a live line 480. Exemplarily, each electronic component in the protection circuit 400 can be connected via the neutral line 470 and / or the live line 480. In the case where the protection circuit is used for an electronic circuit breaker, the electronic components in the protection circuit 400 can be directly or indirectly connected to the terminal 500 via the neutral line 470 and / or the live line. Exemplarily, the neutral line 470 is connected to the neutral line terminal. The live line 480 is connected to the live line terminal.

[0086] In some optional embodiments, the protection circuit 400 further includes a plurality of groups of indicator lights 450. Each group of indicator lights 450 has an alarm state and an operating state. One electric control switch 410 corresponds to a group of indicator lights 450. When the electric control switch 410 is closed and turned on, the group of indicator lights 450 corresponding to the electric control switch 410 is switched to the operating state, that is, the state in which the voltage can be normally output through the protection circuit 400. When the electric control switch 410 is disconnected, the group of indicator lights 450 corresponding to the electric control switch 410 is switched to the alarm state, that is, the protection state is entered, and the power output is disconnected.

[0087] It should be noted that the electronic circuit breaker can be used for one, two or more groups of live wire protection. Therefore, this embodiment does not limit the number of groups of live wire protection that the electronic circuit breaker is used for.

[0088] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0089] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. An electronic circuit breaker, characterized in that: The electronic circuit breaker comprises a housing (100), a first circuit board (200) and a second circuit board (300), wherein the first circuit board (200) and the second circuit board (300) are connected, and the first circuit board and the second circuit board are used to arrange a protection circuit (400), and the protection circuit can control the on and off of a line passing through the electronic circuit breaker; The housing (100) has a containing cavity (101), the first circuit board (200) and the second circuit board (300) are arranged in the containing cavity (101), and the second circuit board (300) is located on one side of the first circuit board (200) in a thickness direction.

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

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. The electronic circuit breaker according to any one of claims 1 to 3, characterized in that: The protection circuit (400) comprises an electric control switch (410), a controller (420), a detection device (430) and an operating switch (440); the first circuit board (200) is used to arrange the electric control switch (410) and the detection device (430); and the second circuit board (300) is used to arrange 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 preset carrier via the mounting portion (110), and the plane where the first circuit board (200) is located is perpendicular to the plane where the bottom of the housing (100) is located; and / or, The top of the housing (100) is provided with an operating portion (120), the second circuit board (300) is arranged on the top side of the accommodating cavity (101), and the plane where the second circuit board (300) is located is parallel to the plane where the top of the housing (100) is located, and the operating switch (440) is opposite to the operating portion (120).

6. The electronic circuit breaker according to any one of claims 1 to 3, characterized in that: It also includes a wiring terminal (500), wherein a partition (130) is provided in the housing (100), and a wiring sealed cavity (102) and an electric control sealed cavity (103) are formed by partitioning through the partition (130). The wiring terminal (500) is arranged in the wiring sealed cavity (102), and the electronic circuit breaker is connected to an external circuit via the wiring terminal (500). The first circuit board and the second circuit board are arranged in the electric control sealed cavity (103), and at least one of the first circuit board (200) and the second circuit board (300) is connected to the wiring terminal (500).

7. The electronic circuit breaker according to claim 6, characterized in that: The invention also includes a first sealing member (600), wherein the housing (100) has a wiring hole (105), wherein the wiring hole (105) passes through the cavity wall of the wiring sealing cavity (102) and is in communication with the wiring sealing cavity (102), and wherein the first sealing member (600) is disposed in the wiring hole (105), and the first sealing member (600) can respectively cooperate with the housing (100) and a cable connected to the wiring terminal (500) in a sealing manner.

8. A protection circuit, characterized in that: The protection circuit can be used for the electronic circuit breaker according to any one of claims 1 to 7, and comprises: an electric control switch (410), a controller (420) and a detection device (430), wherein the electric control switch (410) is connected between two wiring terminals. The wiring terminal (500) in the electronic circuit breaker comprises a live wire wiring terminal, the detection device (430) is arranged between two live wire wiring terminals, and the detection device (430) is used to collect current information passing between the two live wire wiring terminals; The controller (420) is connected to the detection device and the electric control switch (410) respectively, and the controller (420) can control the electric control switch (410) to be disconnected according to the current information collected by the detection device (430).

9. The protection circuit according to claim 8, characterized in that: The protection circuit comprises a plurality of the electrically controlled switches (410) and a plurality of the detection devices (430), wherein one detection device (430) corresponds to one electrically controlled switch (410). The electric control switch (410) is arranged in a circuit connecting the two live wire terminals, and the electric control switch (410) is used to control the on / off of the circuit connecting the two live wire terminals; The detection device (430) is configured to collect current information of the circuit where the corresponding electric control switch (410) is located; The controller (420) can control the corresponding electric control switch (410) to disconnect according to the current information collected by the detection device.

10. The protection circuit according to claim 9, characterized in that: The protection circuit further comprises a plurality of groups of indicator lights (450), each group of the indicator lights (450) having an alarm state and an operating state, and one of the electric control switches (410) corresponds to one group of the indicator lights (450). When the electric control switch (410) is closed and turned on, a group of indicator lights (450) corresponding to the electric control switch (410) is switched to an operating state; When the electric control switch (410) is disconnected, a group of indicator lights (450) corresponding to the electric control switch (410) is switched to an alarm state.

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