CN114664604A - Circuit breaker - Google Patents

Abstract

The invention discloses a circuit breaker, which comprises a circuit breaker assembly, a control module and a flexible circuit board, wherein the circuit breaker assembly comprises a plurality of circuit breaker monomers which are arranged side by side, and a main loop and a mutual inductor for detecting the current of the main loop are arranged in each circuit breaker monomer; the control module is arranged on the circuit breaker assembly; the flexible circuit board penetrates through the plurality of circuit breaker monomers, and the flexible circuit board is electrically connected with the mutual inductors of the plurality of circuit breaker monomers and the control module; the flexible circuit board is provided with a plurality of temperature detection parts electrically connected with the control module, and the temperature detection parts are arranged by being attached to the main loop and used for detecting the temperature of the main loop. The method is used for solving the problems of difficult wiring and assembly and virtual connection caused by insufficient connection in the detection process.

Description

Circuit breaker

Technical Field

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker with a flexible circuit board.

Background

The temperature-detecting device of current circuit breaker, mostly need pass through pin connection, in order to realize integrating processing temperature detected signal, nevertheless adopt pin connection, can have lead wire quantity many unavoidably, the wiring difficulty, assemble complicated scheduling problem, of course, also have partial technical scheme to adopt stereoplasm PCB plate butt joint binding post metal part, nevertheless because of the stereoplasm structure of PCB board, in the implementation, PCB board and the unable direct contact of mutual-inductor are connected, lead to welding there being virtual joint in temperature sensor and the mutual-inductor on PCB board, can not reach safe creepage distance.

Disclosure of Invention

The invention mainly aims to provide a circuit breaker, which is used for solving the problems of difficult wiring and assembly and virtual connection caused by insufficient connection in the detection process.

To achieve the above object, the present invention provides a circuit breaker, comprising:

the circuit breaker assembly comprises a plurality of circuit breaker single bodies which are arranged side by side, and a main loop and a mutual inductor for detecting the current of the main loop are arranged in each circuit breaker single body;

the control module is arranged on the circuit breaker assembly;

the flexible circuit board is provided with a plurality of circuit breaker monomers in a penetrating mode and electrically connected with the mutual inductors of the circuit breaker monomers and the control module;

the flexible circuit board is provided with a plurality of temperature detection parts electrically connected with the control module, and the temperature detection parts are arranged by being attached to the main loop and used for detecting the temperature of the main loop.

In an embodiment, the plurality of temperature detecting portions are disposed at an interval on one side of the flexible printed circuit board.

In one embodiment, the temperature detection part is provided with a temperature sensor, and the temperature sensor is welded at the end part of the temperature detection part.

In one embodiment, the temperature sensor is externally sleeved with a glass fiber sleeve.

In one embodiment, the mutual inductor is provided with a connecting wire assembly, the side edge of the flexible circuit board extends outwards to form a plurality of current detection parts, the current detection parts are provided with wire holders, and the connecting wire assembly is plugged and electrically connected with the wire holders.

In one embodiment, the wire holder is disposed at an outer end of the current detection portion or a position close to the flexible circuit board.

In one embodiment, the number of wire holders is not less than the number of transformers.

In an embodiment, in cooperation with the position of the transformer, the plurality of current detection parts and the plurality of temperature detection parts are alternately arranged on the same side of the flexible circuit board at intervals.

In one embodiment, one end of the flexible circuit board, which is far away from the temperature detection part, extends outwards to form a signal output part, and the signal output part is provided with a wiring terminal.

In an embodiment, each of the circuit breaker units includes a first connection terminal, a second connection terminal, and a switch assembly connected in series between the first connection terminal and the second connection terminal, and the transformer is sleeved on the first connection terminal, the second connection terminal, or a line between the first connection terminal and the second connection terminal;

the circuit breaker assembly further comprises an electric component, the electric component is electrically connected with the control module, the electric component is in transmission connection with the switch component, and the control module is used for controlling the electric component to drive the switch component to be switched from a closing state to an opening state when the main loop current detected by the mutual inductor is larger than a preset current.

Compared with the prior art, the invention has the following beneficial effects:

according to the circuit breaker, the spliced circuit breaker single bodies are adopted, and the circuit breaker single bodies are combined and connected in a side-by-side arrangement mode, so that the using space is saved, and the volume is reduced; in order to avoid the situation that a PCB with a hard structure cannot adjust the position of a temperature detection part to cause that the PCB cannot contact the position and is in virtual connection, a flexible circuit board is arranged, and a plurality of circuit breaker monomers are arranged in a penetrating way on the flexible circuit board to simplify a circuit connection structure; in order to facilitate production, the processing flow of the flexible circuit board is simplified, the production cost is reduced, the flexible circuit board is electrically connected with a plurality of single circuit breaker transformers and control modules, the flexible circuit board is provided with a plurality of temperature detection parts matched with the number of the transformers, the flexible circuit board is arranged by being attached to a main loop, and the temperature of the main loop is directly detected by each temperature detection part, so that the detection precision is effectively improved, and the problems of large number of leads, difficult wiring, complex assembly, virtual connection and the like caused by lead connection are avoided; the temperature detection part is arranged close to the main loop, the detected temperature of the main loop is transmitted to the control module, and the control module controls the on-off of the single circuit breaker according to the temperature of the main loop detected by the temperature detection part; the temperature detection parts are arranged in a matching manner with the number of the transformers, and the temperature detection parts detect the corresponding main loop temperatures respectively so as to realize integrated processing of temperature detection signals, avoid the influence of only the temperature of a detection part or a single main loop on the detection result, and further optimize the detection accuracy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a circuit breaker according to the present invention;

figure 2 is an exploded view of one embodiment of the circuit breaker of the present invention;

FIG. 3 is a schematic diagram of the circuit breaker assembly of the present invention;

FIG. 4 is a schematic structural diagram of a flexible printed circuit according to the present invention;

in the figure: 100. a circuit breaker monomer; 101. a transformer; 1011. a coil; 1012. a connecting wire assembly; 102. a stopper; 1021. a limiting mounting groove; 103. a switch assembly; 200. a flexible circuit board; 201. a temperature detection unit; 2011. a temperature sensor; 202. a current detection unit; 2021. a wire holder; 203. a signal output section; 2031. a wiring terminal; 300. a control module; 301. and a signal interface.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that, if all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, the motion situation, etc. of each component in a certain posture, if the certain posture is changed, the directional indication is changed accordingly.

If in the present application the description referring to "first", "second", etc. is used for descriptive purposes only and not to be construed as indicating or implying any relative importance or to imply that the number of technical features indicated is implicitly. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. If the description of "a and/or B" is referred to in the present invention, it means that either scheme a or scheme B is included, or both scheme a and scheme B are included. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a circuit breaker, which refers to fig. 1 to 4 and comprises a circuit breaker assembly, a control module and a flexible circuit board.

The circuit breaker assembly comprises a plurality of circuit breaker monomers arranged side by side, and each circuit breaker monomer is internally provided with a main loop and a mutual inductor used for detecting current of the main loop.

And the control module is arranged on the circuit breaker assembly. Without limiting the invention, the control module may be disposed at one side of a plurality of circuit breaker units arranged side by side; or between a plurality of breaker units; or, the circuit breaker is provided with a plurality of control modules which are respectively arranged among the plurality of circuit breaker monomers and are used for being connected with the corresponding circuit breaker monomers; of course, the control module may also be integrated into the corresponding circuit breaker unit.

The flexible circuit board, the flexible circuit board wears to establish a plurality ofly the circuit breaker monomer, the flexible circuit board electricity is connected a plurality ofly the free mutual-inductor of circuit breaker with control module.

The flexible circuit board is provided with a plurality of temperature detection parts electrically connected with the control module, and the temperature detection parts are arranged by being attached to the main loop and used for detecting the temperature of the main loop.

According to the circuit breaker, the spliced circuit breaker single bodies are adopted, and the circuit breaker single bodies are combined and connected in a side-by-side arrangement mode, so that the using space is saved, and the volume is reduced; in order to avoid the condition that a virtual connection occurs at a position where the temperature detection part cannot be adjusted due to the fact that the position of the temperature detection part cannot be adjusted by using a PCB with a hard structure, a flexible circuit board is arranged, and a circuit connection structure is simplified by arranging the flexible circuit board to penetrate through a plurality of circuit breaker monomers; in order to facilitate production, the processing flow of the flexible circuit board is simplified, the production cost is reduced, the flexible circuit board is electrically connected with a plurality of single circuit breaker transformers and control modules, the flexible circuit board is provided with a plurality of temperature detection parts matched with the number of the transformers, the flexible circuit board is arranged by being attached to a main loop, and the temperature of the main loop is directly detected by each temperature detection part, so that the detection precision is effectively improved, and the problems of large number of leads, difficult wiring, complex assembly, virtual connection and the like caused by lead connection are avoided; the temperature detection part is arranged close to the main loop, the detected temperature of the main loop is transmitted to the control module, and the control module controls the on-off of the single circuit breaker according to the temperature of the main loop detected by the temperature detection part; the temperature detection parts are arranged in a matching manner with the number of the transformers, and the temperature detection parts detect the corresponding main loop temperatures respectively so as to realize integrated processing of temperature detection signals, avoid the influence of only the temperature of a detection part or a single main loop on the detection result, and further optimize the detection accuracy.

It can be understood that the flexible circuit board 200 according to the present invention adopts an FPGA (Field-Programmable Gate Array), which is a Field-Programmable Gate Array, and the FPGA provides a Programmable substrate, and belongs to one of devices with the shortest design period, the lowest loss, the highest integration level, the highest compatibility, and the highest reliability in an ASIC circuit, and can execute and implement the circuit at a relatively fast speed.

The flexible printed circuit 200 is provided with a plurality of circuit breaker units, and in an embodiment, the flexible printed circuit 200 shown in this document is a flexible board, and specifically, a polyamide material applied to the flexible board may be used. The flexible circuit board 200 can be arranged to be independent of the breaker assembly under the condition that the invention is not limited, namely the flexible circuit board 200 and the breaker are not fixed into an integrated structure, so that the flexible circuit board 200 is detachably arranged in the breaker assembly, and the adjustment, connection, maintenance and replacement are convenient. The temperature detection part 201 is arranged in a manner of being attached, so that the impedance change caused by the connection of the lead can be reduced, and the stability of the detection result is higher.

It can be understood that the present invention includes a plurality of circuit breaker units 100, the circuit breaker units 100 are arranged side by side, and the circuit breaker units 100 are connected and combined with each other, without limiting the present invention, the circuit breaker units 100 can be separately arranged, and adjacent sides of each circuit breaker can be provided with a clamping member or a connection interface for realizing electrical connection, so as to assemble an integrated structure, so that the integrated structure is more stable. The connection interface can be reserved between two adjacent circuit breaker monomers 100, and under the condition that the limitation is not caused by the file of the application, a mounting gap or a mounting position can be arranged corresponding to the position of the connection interface so as to be suitable for realizing electric connection.

Optionally, the temperature detecting portions are disposed through gaps of the corresponding transformers, and the temperature detecting portions 201 are disposed at intervals on one side of the flexible printed circuit board 200, or the temperature detecting portions 201 may be disposed at intervals on two sides of the flexible printed circuit board 200. In the former embodiment, the single structure of the circuit breaker can be simplified, the size of the circuit breaker assembly is reduced, and the use of flexible circuit board materials is saved; in the latter embodiment, the electrical connection can be achieved to a great extent by utilizing the gaps between the transformers.

In order to realize the arrangement close to the main loop, the temperature detection part can be arranged at the end part of the flexible circuit board without limiting the application document.

In an embodiment, the circuit breaker assembly has a plurality of circuit breaker units 100, each circuit breaker unit 100 has a transformer 101, the number of temperature detection parts is set corresponding to the number of transformers, and the number of temperature detection parts is not less than the number of transformers.

In an embodiment, the plurality of temperature detecting portions are disposed at an interval on one side of the flexible printed circuit board.

It can be understood that, make many places temperature detection portion 201 be the pectination interval and set up in flexible line way board 200 a side, specifically can set up a plurality ofly circuit breaker monomer 100 equidistant or unequal interval set up in flexible line way board 200 one side to make flexible line way board 200 wear to establish many circuit ware monomers and insert and arrange circuit breaker assembly one side, temperature detection portion wears to locate corresponding circuit breaker monomer. Without limiting the invention, the temperature detecting parts are arranged close to the corresponding main circuit by correspondingly arranging the intervals of the centers of the plurality of temperature detecting parts at the intervals of the mutual inductors of the plurality of circuit breaker units.

Alternatively, a plurality of temperature detecting portions 201 may be disposed at intervals on both sides of the flexible printed circuit board 200, so that the flexible printed circuit board 200 is inserted between the plurality of circuit breaker units 100 in a reciprocating snake shape.

The transformer 101 has a coil 1011. Without limiting the present invention, the flexible printed circuit board 200 may be inserted into one side of a plurality of circuit breaker units arranged side by side, the temperature detection portion 201 passes through the middle of the coil and is inserted into a corresponding side of the transformer or any position for detecting the temperature of the main circuit, the detection components or detection positions for detecting the temperature of the main circuit, such as the temperature sensor on the temperature detection portion, are arranged around one side or end of the transformer corresponding to the detection components or detection positions, and are arranged to be attached to the corresponding main circuit, specifically, the temperature sensor 2011 may be arranged at the end of the temperature detection portion 201, the end of the temperature detection portion 201 is inserted into any position suitable for detecting the temperature of the main circuit, such as one side of the transformer 101, and the temperature sensor 2011 on the temperature detection portion 201 is arranged to be attached to the main circuit to detect the temperature of the main circuit.

In one embodiment, the temperature detection part is provided with a temperature sensor, and the temperature sensor is welded at the end part of the temperature detection part.

The temperature sensor 2011 is arranged to transmit the main loop temperature detection signal to the signal processing unit such as the control module through the wiring of the flexible circuit board, and without limiting the present invention, the control module 300 may be arranged in or externally connected to the circuit breaker unit, and the flexible circuit board 200 is connected to the control module through the wiring terminal, the connection interface, and the like, and is used for transmitting the main loop temperature. When overload or short circuit appear, rise because of the electric current is quick, lead to mutual-inductor ambient temperature to rise, for avoiding influencing circuit breaker normal use and life because of the high temperature, through each circuit breaker monomer major loop temperature that temperature sensor real-time detection corresponds, correct the current detection signal by control module according to the major loop temperature that detects, specifically can set up switch module in each circuit breaker monomer, control module control switch module work for cut off or switch on the circuit breaker monomer. Under the condition of not limiting the invention, the control module presets a temperature threshold value, and when the temperature of the main loop is higher than or not lower than the temperature threshold value, the switch assembly is controlled to be switched from a closing state to an opening state so as to cut off the corresponding circuit device monomer.

Further, because the temperature detection portion 201 is disposed adjacent to the main circuit, the impedance change caused by the wires can be reduced, the temperature detection portion 201 directly detects the temperature of the main circuit, and the control module 300 corrects the current detection signal according to the detected temperature of the main circuit, so that the accuracy and stability of temperature detection and current detection are higher.

In one embodiment, the temperature sensor is externally sleeved with a glass fiber sleeve.

Establish the external member of preventing high temperature such as glass fiber sleeve pipe through the cover for form the temperature probe that can contact forceful electric power metal terminal, through the setting of high temperature resistant external member, can effectively protect temperature sensor, prevent because of high temperature influences the testing result, with accurate test major loop temperature, optimize the stability when temperature sensor detects.

Without limiting the present invention, the temperature sensor 2011 may be disposed on a side of the flexible printed circuit board 200 according to the circuit connection relationship, and the temperature sensor may be disposed at any position suitable for detecting the temperature of the main circuit, such as the middle portion and the end portion of the temperature detecting portion, according to the detection position corresponding to each transformer, and one or more temperature sensors 2011 may be disposed at any temperature detecting portion 201.

In one embodiment, the transformer has a connecting wire assembly 1012, the side of the flexible circuit board extends outwards to form a plurality of current detection portions, the current detection portions are provided with wire holders, and the connecting wire assembly 1012 is plugged into and electrically connected with the wire holders.

The circuit breaker comprises a circuit breaker body, a flexible circuit board and a control module, wherein a main circuit and a mutual inductor are arranged in each circuit breaker body, the mutual inductor is used for detecting current of the main circuit and collecting current of the main circuit, electric leakage parameters and the like, a connecting wire assembly is arranged to be inserted into and electrically connected with a corresponding wire holder on the flexible circuit board, and the flexible circuit board is connected with the control module and is used for transmitting a current detection signal of the main circuit to the control module. According to actual use, switch assemblies can be correspondingly arranged on each breaker unit, the connecting wire assemblies, the switch assemblies and the control module are respectively and electrically connected, current detection signals detected by the mutual inductor are transmitted to the control module through each current detection part, and the control module controls the corresponding switch assemblies to work according to the current detection signals, namely, the switch assemblies are controlled to be switched on or switched off, so that the mutual inductor is prevented from being influenced by current rising caused by short circuit or current overload.

Specifically, the transformer 101 may be installed in the circuit breaker unit 100 via a structure suitable for fixed installation in the circuit breaker unit such as a transformer installation seat, and of course, a flexible circuit board may be inserted into one side of the plurality of circuit breaker units arranged side by side here, so that the current detection portion is inserted between two transformers, and the width of the current detection portion is set to be not more than the distance between two transformer installation seats for detecting the corresponding main loop current.

In one embodiment, the current detecting portion 202 is provided with a wire holder 2021, which is disposed at the outer end of the current detecting portion or near the flexible circuit board, in accordance with the position of the connecting wire assembly.

Without limiting the present invention, the wire holder 2021 is disposed on one side of the flexible printed circuit board 200 according to the circuit connection relationship, and is disposed at any position such as the middle portion and the end portion of the current detection portion 202 corresponding to the position of the connecting wire assembly, wherein one or more wire holders 2021 may be disposed on any current detection portion 202, and a plurality of wire holders 2021 may be disposed at different positions of the same current detection portion 202.

It is understood that the wire holder 2021 may be disposed at or near the current detection portion 202, the temperature detection portion 201, the side of the flexible printed circuit board 200, the middle of the flexible printed circuit board 200, and any other suitable positions for practical use, corresponding to the positions of the connecting wire assemblies, without limiting the present invention. In order to facilitate the processing of the flexible printed circuit board 200, the wire holder 2021 is disposed at the outer end of the current detection portion or at a position where the current detection portion is close to the flexible printed circuit board in accordance with the position of the connecting wire assembly. The current detection portion 202 extends outward from the side of the flexible printed circuit board 200, and the outer end of the current detection portion described herein refers to the end of the current detection portion 202 extending outward and away from the flexible printed circuit board.

In one embodiment, the wire holder is disposed at an outer end of the current detection portion or a position close to the flexible circuit board.

According to practical use, the current detection part 202 may be disposed on the same side or different side from the temperature detection part 201, and the current detection part 202 and the temperature detection part 201 corresponding to the same circuit breaker unit may be disposed on the same side or different side from the flexible circuit board.

According to different requirements of actual use, optionally, a connecting wire assembly 1012 is arranged to be attached to one side of the transformer 101 in the form of wire connection or the like, the temperature detection portion 201 is arranged to be attached to the main loop, and the length of the temperature detection portion 201 is not greater than the length of the current detection portion 202, where the temperature detection portion 201 and the current detection portion indicate that the temperature detection portion 201 and the current detection portion 202 extend outwards respectively from the flexible circuit board 200 and the flexible circuit board 200, respectively.

It should be noted that, the temperature detection part 201/the current detection part 202 are formed by extending outward from the flexible printed circuit board 200, and each of the temperature detection part 201 and the current detection part 202 may be arranged in a vertical and/or non-vertical manner with respect to the flexible printed circuit board 200 according to different requirements of actual use.

Without limiting the present invention, the flexible printed circuit board 200 is extended outward to form an extension portion, and according to different requirements of actual use, the temperature sensor 2011 and the wire holder 2021 may be disposed at any position of the same extension portion suitable for actual use, so as to receive and transmit the main loop temperature detection signal and the current detection signal.

In one embodiment, the number of wire holders is not less than the number of transformers.

According to different requirements of actual use, any mutual inductor can be set to be provided with one to a plurality of connecting wire components, a wire holder is not less than one in the current detection part of the flexible circuit board 200 for receiving corresponding main loop current detection signals, so that the number of the wire holders is not less than that of the mutual inductors, the multiple circuit breaker assemblies with different numbers of the mutual inductors are suitable for, the application range of the flexible circuit board is enlarged, and the processing is convenient.

Under the condition that does not cause the restriction to this application document, correspond connecting wire subassembly quantity, position, under the condition that connecting wire subassembly is no less than to the connector holder quantity, current detection portion quantity can be equal to or not equal to mutual-inductor quantity.

As shown in figure 1, in the wiring of the flexible circuit board, when the number of the wire holders arranged on the flexible circuit board is more than that of the connecting wire components, only the required wire holders can be selectively welded on the flexible circuit board, so that the use of corresponding components is reduced, and the consumable material is reduced.

In an embodiment, in cooperation with the position of the transformer, the plurality of current detection parts and the plurality of temperature detection parts are alternately arranged on the same side of the flexible circuit board at intervals. The main loop current detection signal and the main loop temperature detection signal are used for receiving and transmitting the corresponding main loop current detection signal and the corresponding main loop temperature detection signal. Without limiting the present invention, the distance between the temperature detecting portions 201 and the current detecting portions 202 corresponding to the same circuit breaker unit may be set to be not more than the distance between any two temperature detecting portions 201 and any two current detecting portions 202.

A stopper 102 suitable for the transformer 101 is arranged in the outer shell of the single circuit breaker 100, a limit mounting groove 1021 suitable for the transformer 101 is formed in the inner cavity of the outer shell of the single circuit breaker by the stopper 102, and the transformer 101 is separated from structural components, part of a main circuit and the like in the single circuit breaker 100 by the stopper 102 so as to avoid mutual influence. The stopper 102 is arranged to limit the flexible printed circuit 200 in a gap between the transformer 101 and the stopper 102, so as to ensure stable limitation of the flexible printed circuit 200, and prevent the displacement of the flexible printed circuit 200, which may cause the displacement of the temperature detection part 201 and the current detection part 202, from affecting the detection result. Of course, without limiting the present invention, the flexible circuit board may be fixed in the circuit breaker assembly by pins, screws, welding, clamping, etc.

In one embodiment, one end of the flexible circuit board, which is far away from the temperature detection part, extends outwards to form a signal output part, and the signal output part is provided with a wiring terminal.

The temperature sensor 2011 and the wire holder 2021 realize signal output through the signal output portion 203, and specifically, the wire terminal may be disposed at an end portion of the signal output portion.

In an embodiment, the control module 300 has a signal interface 301, a plurality of single circuit breaker units 100 are provided with connection positions on a side surface thereof, the control module 300 has the signal interface 301 on a side surface thereof, and the connection terminal 2031 of the signal output portion is led out through the connection positions of the plurality of single circuit breaker units 100 and is used for being connected with the signal interface 301 of the control module 300.

It can be understood that the connection positions are opened on the side surfaces of the outer shells of the plurality of single circuit breaker bodies, and the signal interface 301 is opened on the side surface of the outer shell of the control module, specifically, the connection terminal 2031 is led out from the connection position of the single circuit breaker body closest to the control module 300 and is connected with the signal interface 301 of the control module 300, and the signal access portion of the control module 300 is electrically connected with the plurality of temperature detection portions 201 and the plurality of current detection portions 202 corresponding to the single circuit breaker body 100 via the signal interface 301.

In an embodiment, each of the circuit breaker units includes a first connection terminal, a second connection terminal, and a switch assembly connected in series between the first connection terminal and the second connection terminal, and the transformer is sleeved on the first connection terminal, the second connection terminal, or a line between the first connection terminal and the second connection terminal. Here, the first connection terminal (not shown) and the second connection terminal (not shown) may be disposed on two sides of the single circuit breaker, and the first connection terminal and the second connection terminal may be used as an electrical connection terminal and an electrical connection outlet, and the first connection terminal and the second connection terminal may be replaced with each other.

The circuit breaker assembly further comprises an electric component, the electric component is electrically connected with the control module, the electric component is in transmission connection with the switch component, and the control module is used for controlling the electric component to drive the switch component to be switched from a closing state to an opening state when the main loop current detected by the mutual inductor is larger than a preset current.

Specifically, the electric component may be disposed in the control module housing, externally connected to the control module, or correspondingly disposed in each circuit breaker unit. Each single circuit breaker 100 is provided with a switch assembly and a mutual inductor respectively, the control module 300 receives a main loop temperature detection signal transmitted by the temperature detection part and a current detection signal transmitted by the current detection part through the signal interface 301, judges the current state of the single circuit breaker 100 according to the received main loop temperature detection signal and the current detection signal, judges whether the mutual inductor 101 has the phenomena of overcurrent, short circuit, electric leakage and the like, controls the electric assembly to drive the switch assembly 103 to move, and further controls the corresponding main loop current by cutting off or switching on the single circuit breaker 100 through the switch assembly 103, so as to automatically control the on-off and signal transmission of the circuit breaker, rapidly detect and protect the circuit breaker circuit and optimize the safety.

Specifically, when the main loop current detected by the transformer is greater than the preset current, the control module controls the electric component to drive the switch component 103 to move, and the switch state is switched from the switch-on state to the switch-off state. The switch assembly may include a handle that exits the circuit breaker cell body via a circuit breaker cell housing top opening.

By way of example, in one embodiment, the circuit breaker assembly comprises four circuit breaker single bodies and a control module, each circuit breaker single body is provided with a mutual inductor, the number of temperature detection parts of the flexible circuit board is set corresponding to the number of the mutual inductors, and any temperature detection part end is provided with a temperature sensor which is arranged to be attached to the main circuit and used for detecting the temperature of the main circuit and transmitting a temperature detection signal. Each free mutual-inductor of circuit breaker all is equipped with a connecting wire subassembly, combines circuit breaker monomer structure, outwards extends in flexible line way board one side in order to form three current detection portion, current detection portion outer end or the position that is close to the flexible line way board are equipped with the connection terminal, and mutual-inductor quantity is no less than to connection terminal quantity for the current detection signal of receiving and conveying mutual-inductor's connecting wire subassembly conveying. The temperature detection part and the current detection part are parallel to each other and are arranged on one side edge of the flexible circuit board in a staggered mode at intervals in a mode of being perpendicular to the flexible circuit board. The flexible line way board is kept away from the outside extension of one end of temperature-detecting portion is in order to form signal output portion, signal output portion tip has binding post, binding post is connected with control module's signal interface electricity for conveying temperature detect signal, electric current detect signal.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A circuit breaker, comprising:

the circuit breaker assembly comprises a plurality of circuit breaker single bodies which are arranged side by side, and a main loop and a mutual inductor for detecting the current of the main loop are arranged in each circuit breaker single body;

the control module is arranged on the circuit breaker assembly;

the flexible circuit board penetrates through the plurality of circuit breaker single bodies, and the flexible circuit board is electrically connected with the mutual inductors of the plurality of circuit breaker single bodies and the control module;

the flexible circuit board is provided with a plurality of temperature detection parts electrically connected with the control module, and the temperature detection parts are attached to the main loop and used for detecting the temperature of the main loop.

2. The circuit breaker according to claim 1, wherein a plurality of said temperature detecting portions are provided at intervals on one side of said flexible wiring board.

3. The circuit breaker according to claim 1, wherein the temperature detection portion has a temperature sensor welded to an end portion thereof.

4. The circuit breaker of claim 3, wherein the temperature sensor is sheathed with a fiberglass sleeve.

5. The circuit breaker according to claim 1, wherein the transformer has a connection line assembly, the side of the flexible wiring board extends outward to form a plurality of current detection portions, the current detection portions are provided with wire holders, and the connection line assembly is plugged and electrically connected with the wire holders.

6. The circuit breaker according to claim 5, wherein the wire holder is provided at an outer end of the current detection portion or at a position close to the flexible wiring board.

7. The circuit breaker of claim 6, wherein the number of wire holders is not less than the number of transformers.

8. The circuit breaker according to claim 5, wherein a plurality of said current detecting portions and a plurality of said temperature detecting portions are alternately disposed on the same side of said flexible printed circuit board in accordance with the position of said transformer.

9. The circuit breaker according to any one of claims 1 to 8, wherein an end of the flexible wiring board remote from the temperature detection portion extends outward to form a signal output portion having a connection terminal.

10. The circuit breaker according to claim 9, wherein each of the circuit breaker units comprises a first connection terminal, a second connection terminal, and a switch assembly connected in series between the first connection terminal and the second connection terminal, and the transformer is sleeved on the first connection terminal, the second connection terminal, or a line between the first connection terminal and the second connection terminal;

the circuit breaker assembly further comprises an electric component, the electric component is electrically connected with the control module, the electric component is in transmission connection with the switch component, and the control module is used for controlling the electric component to drive the switch component to be switched from a closing state to an opening state when the main loop current detected by the mutual inductor is larger than a preset current.

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