CN214311360U

CN214311360U - Circuit breaker and accessory module thereof

Info

Publication number: CN214311360U
Application number: CN202023022671.8U
Authority: CN
Inventors: 邵江华; 司莺歌
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-09-28
Anticipated expiration: 2030-12-16

Abstract

A circuit breaker and accessory module thereof comprises at least one control module and at least one sampling module, wherein the control module is detachably assembled on the side surface of the circuit breaker; the assembly of sampling module detachable is equipped with binding post's both ends at the circuit breaker, and at least one sampling module sets up in circuit breaker binding post side, the signal transmission to the control module that the sampling module will gather from the circuit breaker, control module includes the signal drive function unit action of control unit and functional unit, control module according to the transmission of sampling module. The utility model discloses an accessory module assembles on current circuit breaker through the mode of assembling, and swift simple and convenient reforms transform having the circuit breaker, makes the circuit breaker have multiple functions such as sampling function and automatic divide-shut brake, does benefit to the transformation of assembling of having the circuit breaker.

Description

Circuit breaker and accessory module thereof

Technical Field

The utility model relates to a low-voltage apparatus, concretely relates to circuit breaker and annex module thereof.

Background

The low-voltage circuit breaker, also called automatic air switch or automatic air breaker, can be used for distributing electric energy and protecting overload and short circuit of lines and power supply equipment, and can also be used for infrequent switching of lines and infrequent starting of motors. Traditional circuit breaker generally only has short-circuit protection and overload protection function, along with people's improvement of living standard, more demands have been proposed to the power consumption safety to the electric wire netting company, for example need the circuit breaker can automatic divide-shut brake, have earth leakage protection and monitor circuit breaker running state's function etc. current circuit breaker can't satisfy actual need because of the function singleness, but the big not only cost of changing existing circuit breaker in batches is higher, and the operation is comparatively difficult moreover.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a circuit breaker and annex module that the assembly is simple and convenient, multiple functional.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an accessory module of a circuit breaker comprises at least one control module and at least one sampling module, wherein the control module is detachably assembled on the side surface of the circuit breaker; the assembly of sampling module detachable is equipped with binding post's both ends at the circuit breaker, the signal transmission that the sampling module will gather from the circuit breaker is to control module, control module includes the control unit and functional unit, and control module drives the functional unit action according to the signal that the sampling module transmitted, the sampling module is including the electronic component who is used for gathering circuit breaker main line signal, electronic component includes current transformer and/or zero sequence transformer and/or temperature sensor and/or voltage sampling circuit.

Further, the binding post of circuit breaker includes incoming line terminal and outlet terminal, the figure of sampling module is two, and two sampling modules detachable assembly are equipped with the both ends of incoming line terminal and outlet terminal at the circuit breaker respectively.

Furthermore, the number of the sampling modules is two, one of the sampling modules is provided with a current transformer for collecting current signals in a main circuit of the circuit breaker, and the other sampling module is provided with a zero sequence transformer for collecting leakage current signals in the main circuit of the circuit breaker.

Further, the sampling module includes first mounting be provided with first circuit board in the first mounting be connected with the board of getting electricity on the first circuit board, current transformer is connected with first circuit board, get the electric board and be used for being connected with the binding post of circuit breaker, first mounting is equipped with the through wires hole at the mounted position that corresponds current transformer, and current transformer transmits the current signal who senses to first circuit board.

Furthermore, the sampling module includes first mounting be provided with first circuit board in the first mounting be connected with the board of getting electricity on the first circuit board, zero sequence transformer is connected with first circuit board, and first mounting is equipped with the through wires hole at the mounted position who corresponds zero sequence transformer, and the leakage current signal transmission that zero sequence transformer will sense is to first circuit board.

Further, still be connected with temperature sensor on the first circuit board, temperature sensor with get the temperature that the electric plate contact was used for acquireing circuit breaker binding post, temperature sensor transmits temperature signal to first circuit board.

Further, the sampling module includes first mounting, first mounting includes first mounting groove and second mounting groove, first mounting groove is used for installing first circuit board, the second mounting groove is used for installing current transformer or zero sequence transformer, and the second mounting groove is located the below of first mounting groove be equipped with the through wires hole that is used for making the wire pass in the second mounting groove.

Furthermore, be equipped with in the second mounting groove and separate the arch, separate the arch and separate the second mounting groove for two at least second branch mounting grooves, what correspond in every second branch mounting groove is equipped with a through wires hole.

Furthermore, the second mounting groove is in a capsule shape, the side wall of the separation bulge is an arc-shaped concave surface, and the separation bulge is used for separating to form a circular second sub-mounting groove.

Further, first circuit board is installed in first mounting groove, and first circuit board is equipped with towards the front of circuit breaker and gets the electricity board and be used for the plug be connected with control module, and the back of first circuit board is equipped with temperature sensor, gets the electricity board and runs through first circuit board, and one end is used for being connected with the binding post of circuit breaker, and the other end is connected with the temperature sensor contact.

Furthermore, the two sampling modules are respectively connected with an incoming line terminal and an outgoing line terminal of the circuit breaker, wherein the sampling module connected to the incoming line terminal is connected with the incoming line terminal to provide a working power supply for the whole accessory module.

Furthermore, the sampling module comprises an electronic element and a first microprocessor, wherein the electronic element is used for acquiring a main line signal of the circuit breaker, and the electronic element is connected with the first microprocessor.

Further, the functional unit comprises an automatic switching-on and switching-off unit and/or an alarm indicating unit and/or a release unit.

Furthermore, the control module also comprises a communication unit, and the communication unit is connected with the control unit.

Furthermore, the number of the control modules is at least two, the functional unit of one control module comprises an automatic switching-on and switching-off unit, and the functional unit of the other control module comprises an alarm indicating unit and/or a release unit.

Further, control module includes the second mounting, the second mounting includes base and upper cover be equipped with the couple of piecing together on the circuit breaker on the base be equipped with on the casing of circuit breaker with couple matched with recess.

Further, control module includes second circuit board and automatic divide-shut brake unit, automatic divide-shut brake mechanism includes brake valve lever, drive mechanism and dropout structure, brake valve lever is connected with the handle linkage of circuit breaker, and brake valve lever is connected with the drive mechanism linkage, and the operating device linkage of dropout structure and circuit breaker is equipped with the controller on the second circuit board, the controller can drive the handle that control valve lever drove the circuit breaker according to the signal control drive mechanism who comes from sampling module and realize the combined floodgate operation of circuit breaker, just the controller can control drive the operating device dropout that transmission mechanism can drive the tripping structure trigger circuit breaker and realize the separating brake operation of circuit breaker.

Furthermore, the control module comprises a second circuit board and a tripper unit, the tripper unit comprises a tripper, a controller is arranged on the second circuit board, and the controller can control the tripper to trigger an operating mechanism of the circuit breaker to trip according to a signal from the sampling module.

Further, the control module is also provided with a test button and a test circuit, and the test circuit is operated by the test button to generate the simulated leakage current.

Furthermore, the sampling module comprises a first circuit board, a signal unit is arranged on the first circuit board, the control module comprises a second circuit board, and a controller is arranged on the second circuit board; the sampling module and the control module carry out signal transmission through the signal transmission unit, the signal transmission unit is including setting up the plug on the first circuit board and setting up the socket on the second circuit board, the signal transmission between signal unit and the controller is realized in the cooperation of plug and socket.

Furthermore, control module's figure is a plurality of, and a plurality of control module set up side by side in the same one side of circuit breaker, signal transmission unit still includes middle circuit board, is equipped with the extension plug of being connected with middle circuit board on the first circuit board be equipped with middle plug and middle socket on the middle circuit board, middle socket cooperates with the extension plug of first circuit board, and middle plug cooperates with the socket of second circuit board respectively.

Further, the intermediate circuit board also includes a second extension plug for mating with another intermediate circuit board.

A circuit breaker is provided with the accessory module of the circuit breaker.

The utility model provides a circuit breaker, includes the casing be equipped with two at least looks utmost point in the casing, every looks utmost point is including setting up the binding post at both ends assemble as above on the casing accessory module, the sampling module is connected with the binding post of every looks utmost point of circuit breaker.

The utility model discloses a circuit breaker and accessory module thereof, the accessory module assembles on current circuit breaker through the mode of assembling, and swift simple and convenient reforms transform having the circuit breaker, and the accessory module cooperates with control module jointly by sampling module, and control module acquires the running state of circuit breaker through sampling module to according to running state drive function unit action, make the circuit breaker have multiple functions such as sampling function and automatic divide-shut brake, do benefit to the transformation of assembling of having the circuit breaker.

In addition, the electronic element arranged on the first circuit board in the sampling module can acquire different signals through free combination, and the requirements of different circuit breakers on signal acquisition are met.

In addition, the control module is provided with a communication unit, and communication connection between the circuit breaker and the circuit breaker, between the circuit breaker and the client and between the circuit breaker and the equipment can be realized.

Drawings

FIG. 1 is a schematic diagram of an accessory module of the present invention;

FIGS. 2-4 are schematic diagrams of a circuit breaker and its accessory module according to the present invention;

fig. 5 is a schematic structural diagram of a circuit breaker and its accessory module according to the present invention;

fig. 6 is a schematic structural diagram of the circuit breaker of the present invention (circuit breaker without the accessory module mounted thereon);

FIGS. 7 to 8 are schematic structural views of the circuit breaker according to the present invention;

FIG. 9 is a schematic view of the attachment module of the present invention;

fig. 10 to 12 are schematic structural views of the sampling module of the present invention;

fig. 13 is a schematic structural diagram of a first fixing member of the sampling module according to the present invention;

fig. 14 is a schematic structural diagram of a sampling module in the present invention (assembling a zero sequence transformer);

fig. 15 is a schematic structural diagram of a sampling module in the present invention (equipped with a current transformer);

fig. 16 is a schematic structural diagram of a sampling module (equipped with a temperature sensor) in the present invention;

fig. 17 is a schematic structural diagram of a sampling module according to the present invention (an intermediate circuit board is assembled);

fig. 18 to 20 are schematic structural views of the intermediate circuit board of the present invention;

fig. 21 is a schematic structural diagram (close to the upper cover side) of the control module in the present invention;

fig. 22 is a schematic structural view of the trip mechanism and the operating mechanism of the circuit breaker according to the present invention;

fig. 23 to 25 are schematic structural diagrams (close to one side of the base) of the control module according to the present invention.

Detailed Description

The following description will further describe a specific embodiment of a circuit breaker and an accessory module thereof according to the present invention with reference to the embodiments shown in fig. 1 to 25. The present invention is not limited to the description of the following embodiments.

As shown in fig. 1-8, an accessory module of a circuit breaker comprises at least one control module 2 and at least one sampling module 1, wherein the control module 2 is detachably assembled on the side surface of the circuit breaker 3, the sampling module 1 is detachably assembled at one end or two ends of the circuit breaker 3 provided with a wiring terminal, the at least one sampling module 1 is connected with the wiring terminal of the circuit breaker 3, and the sampling module 1 is used for collecting signals reflecting the operation conditions of main lines of all poles of the circuit breaker 3; sampling module 1 will follow signal transmission to control module 2 that circuit breaker 3 gathered, control module 2 includes the control unit and functional unit, and control module 2 judges the running condition of each utmost point main line of circuit breaker 3 according to the signal of sampling module 1 transmission to the action of drive functional unit.

The action of the functional unit comprises driving the circuit breaker 3 to automatically switch on and off, and/or sending out warning alarm and/or displaying the state of the circuit breaker, and/or remotely communicating with an upper computer and the like. For example, in the embodiment of a control module 2 shown in fig. 21-22, the control module 2 is assembled on a side surface of the circuit breaker 3 and can be used as a control electrode of the circuit breaker 3 for realizing automatic opening and closing of the circuit breaker 3, the control module 2 is linked with an operating mechanism 32 (see fig. 22) and a handle of the circuit breaker 3, and the automatic opening and closing function of the circuit breaker 3 is realized by driving the operating mechanism 32 and the handle to act.

The sampling module 1 comprises one or more electronic components for realizing the sampling function, the number of each electronic component can be set according to the pole number of the circuit breaker 3, the electronic components comprise a current transformer 14 and/or a zero sequence transformer 15 and/or a temperature sensor 16 and/or a voltage acquisition circuit, and the like, and the electronic components transmit the acquired signals to the control module 2. The control unit of the control module 2 drives the functional unit to act according to the running state of each pole main circuit of the circuit breaker 3 collected by the sampling module 1, and the action of the functional unit comprises driving the circuit breaker 3 to automatically switch on and off and/or sending out warning and the like. For example, the electronic component is a current transformer 14, the control module 2 determines whether an overcurrent exists according to a current signal collected by the current transformer 14, and when the overcurrent continues for a certain time, it is determined that the overload fault exists in the circuit breaker 3, the circuit breaker 3 is driven to open, so as to implement circuit protection. For another example, the electronic component is a zero sequence transformer 15, the control module 2 determines whether a leakage current signal exists according to a current signal collected by the zero sequence transformer 15, and drives the circuit breaker 3 to open the circuit when the leakage current signal exists. For another example, the electronic component is a temperature sensor 16, and when the temperature of the terminal of the circuit breaker 3 is detected to be high, the control module 2 controls the functional unit to alarm, and reminds a user through an indicator light and/or a buzzer and the like. For another example, the electronic component includes a voltage dividing resistor for implementing a voltage sampling circuit, the voltage is sampled by the voltage dividing resistor, a voltage signal is transmitted to the control module 2, and the control module 2 determines according to the voltage signal that the circuit breaker 3 is driven to open the circuit when an undervoltage or overvoltage fault exists.

In this application, the accessory module of circuit breaker, including one or more control module 2 to and including one or more sampling module 1, circuit breaker 3's binding post includes incoming wire terminal and outlet terminal, and what sampling module 1 corresponded connects on circuit breaker 3's incoming wire terminal and/or outlet terminal, when including connecting two sampling module 1 on incoming wire terminal and outlet terminal respectively simultaneously, preferably provide the working power supply of whole accessory module by connecting sampling module 1 on the incoming wire terminal.

The embodiment of the accessory module assembly of the circuit breaker shown in fig. 2 comprises a control module 2 and a sampling module 1, wherein the control module 2 is detachably assembled at one side of a four-pole circuit breaker, the sampling module 1 is installed at one end of a wire inlet terminal of the circuit breaker 3, and the sampling module 1 directly transmits signals collected from the circuit breaker 3 to the control module 2. The control module 2 comprises a control unit and a functional unit, the control unit comprises a second microprocessor MCU2, and the second microprocessor MCU2 judges signals collected from the circuit breaker 3 according to the sampling module 1 to drive the functional unit to act. Preferably, control module 2 still is equipped with the communication unit, the communication unit realizes the communication connection between a plurality of control module 2 through modes such as wireless or bluetooth, and is corresponding, and a plurality of circuit breaker 3 that are equipped with control module 2 in this embodiment also can realize the communication connection through the communication unit, and the communication unit can adopt RS485, WI FI module, bluetooth module or SI M card etc. in addition, the communication unit can also realize the signal transmission between circuit breaker 3 and customer end, user APP, cloud platform and equipment etc..

Another mounting embodiment of an accessory module of a circuit breaker, as shown in fig. 3, comprises a control module 2 and a sampling module 1, the control module 2 being removably mounted on one side of a four pole circuit breaker. The sampling module 1 includes a signal unit, and the signal unit processes signals acquired by the electronic component and transmits the processed signals to the control module 2, for example, analog signals are converted into digital signals, and high voltage is converted into low voltage or direct current and then transmitted to the control module 2. Preferably, the signal unit includes a microprocessor, and the processor is a first microprocessor MCU1 in this embodiment. Preferably, the sampling module 1 includes a signal transmission unit, the sampling module 1 is in signal connection with the control module 2 through the signal transmission unit arranged between the control module 2 and the sampling module 1, the sampling module 1 transmits the signal collected from the circuit breaker 3 to the control module 2 through the signal transmission unit, or the sampling module 1 transmits the processed signal to the control module 2 through the signal transmission unit. Preferably, the signal transmission unit may also function as a transmission power source. The signal transmission unit enables the connection between the sampling module and the control module to be simpler and more convenient, and transmission is facilitated.

Another assembling embodiment of an accessory module of a circuit breaker as shown in fig. 4 comprises two control modules 2 and two sampling modules 1, wherein the two control modules 2 are detachably assembled on one side of a four-pole circuit breaker side by side, the two sampling modules 1 are respectively detachably assembled on an incoming line terminal and an outgoing line terminal at two ends of the four-pole circuit breaker, the sampling module 1 connected with the incoming line terminal provides power for the whole accessory module, the two sampling modules 1 are respectively connected with the two control modules 2 through respective signal transmission units, the sampling module 1 is connected with the control modules 2 through the signal transmission units, and when the control modules 2 are connected, the signal transmission units also play a role in mutual transmission of signals between the control modules 2.

As shown in fig. 9-15 and 17, the sampling module 1 includes a first fixing member for assembling the sampling module 2 on the circuit breaker 3, a first circuit board 12 is disposed in the first fixing member, a power taking plate 13 and a plug 121 are connected to the first circuit board 12, the power taking plate 13 is used for being connected to the connection terminals of the circuit breaker 3, and the number of the power taking plates 13 corresponds to the number of the connection terminals of each pole of the circuit breaker 3; the plug 121 is connected to the control module 2, and is configured to implement signal transmission between the first circuit board 12 and the control module 2. The electricity taking plate 13 and the plug 121 vertically penetrate out of one side of the first fixing piece, and the shape and the structure of the electricity taking plate 13 are matched with those of a wiring terminal of the circuit breaker 3.

The first circuit board 12 is further connected with one or more electronic components for realizing the sampling function, the number of each electronic component is set according to the number of poles of the circuit breaker 3, the electronic components such as the current transformer 14, the zero sequence transformer 15, the temperature sensor 16 and the like are correspondingly arranged on the first circuit board 12, the signal unit connected with the corresponding electronic component is arranged on the first circuit board 12 and is connected with the control module 2 through the signal transmission unit, the signal unit can transmit the signal collected by the electronic component to the control module 2 through the signal transmission unit and can also transmit the signal collected by the electronic component to the control module 2 through the signal transmission unit after being processed, the preferable signal unit adopts a microprocessor, in the application, the microprocessor arranged on the first circuit board 12 is MUC1, and the electronic component is connected with the first microprocessor MCU1, the first microprocessor MCU1 obtains signals such as voltage, current and temperature through a sampling circuit. Through the combination arrangement of various electronic components, the sampling module 1 can have different signal acquisition functions at the same time. Of course, the signal unit may also be a voltage reduction circuit, a voltage stabilization circuit, a filtering circuit, an analog-to-digital conversion circuit, or the like.

With reference to fig. 10-12 and fig. 15, a first embodiment of a sampling module 1 is provided, the sampling module 1 being a current sampling module, said sampling module 1 comprising a current transformer 14. In this embodiment, the sampling module 1 is used for detecting whether overcurrent exists in a main line of the circuit breaker 3, a first circuit board 12 is arranged in the first fixing member, a power taking plate 13 is connected to the first circuit board 12, the current transformer 14 is connected to the first circuit board 12, the power taking plate 13 is used for being connected to a wiring terminal of the circuit breaker 3, a threading hole is formed in the mounting position corresponding to the current transformer 14 of the first fixing member, a conductor connected with the circuit breaker penetrates through the threading hole and penetrates through the current transformer 14 when being connected to the wiring terminal, so that the current transformer 14 penetrates through the main line of the circuit breaker 3, preferably, the number of the current transformers 14 is multiple, one current transformer 14 penetrates through each main line of the circuit breaker 3, the current transformer 14 transmits a sensed current signal to the first circuit board 12, and a first microprocessor MCU1 on the first circuit board 12 transmits the current signal to a control unit through a signal transmission unit And the module 2 is used for judging whether the main line of the breaker 3 has over-current or not by the control module 2, and when the control module 2 judges that the main line has over-current, the control module 2 drives the functional unit to act so as to enable the breaker 3 to be automatically opened.

Further, at least one current transformer 14 among the plurality of current transformers 14 is used for arc fault monitoring, the current transformer 14 transmits the collected arc fault signal to the first circuit board 12, the first microprocessor MCU1 of the first circuit board 12 transmits the arc fault signal to the control module 2, and the control module 2 enables the functional unit to operate after receiving the arc fault signal, for example, the circuit breaker 3 is driven to automatically open or the circuit breaker 3 gives an alarm.

Further, still including the voltage sampling circuit who is used for detecting voltage, realize the sampling of voltage through divider resistance, convey control module 2 with voltage signal, voltage sampling circuit sets up on first circuit board 12, gathers the voltage signal of circuit breaker through getting electroplax 13.

With reference to fig. 14, a second embodiment of the sampling module 1 is provided, the sampling module 1 being a leakage sampling module, said sampling module 1 comprising a zero sequence transformer 15. Sampling module 1 includes first mounting be provided with first circuit board 12 in the first mounting be connected with the board of getting electricity 13 on the first circuit board 12, zero sequence transformer 15 is connected with first circuit board 12, and first mounting is equipped with the through wires hole at the mounted position who corresponds zero sequence transformer 15. In this embodiment, whether sampling module 1 is used for detecting the main line of circuit breaker 3 and has the leakage current, makes sampling module 1 have the main line of detecting circuit breaker 3 and has the function of leakage current, zero sequence transformer 15 cross-under is on the main line of circuit breaker 3, and preferred zero sequence transformer 15 is a zero sequence transformer 15 that is capsule-like, and the every utmost point main line of circuit breaker 3 all passes the centre bore of same zero sequence transformer 15, and of course, zero sequence transformer 15 also can set up a plurality ofly, corresponds every utmost point main line of circuit breaker 3, but the interconnecting link of a plurality of zero sequence transformer 15 is more relatively, and is with high costs. The leakage current that the zero sequence transformer 15 can detect includes sinusoidal residual current, smooth direct current that add suddenly or rise slowly etc., and zero sequence transformer 15 transmits the leakage current signal that senses to first circuit board 12, and first microprocessor MCU1 of first circuit board 12 transmits the leakage current signal to control module 2 through the signal transmission unit, and control module 2 drive functional unit action makes circuit breaker 3 automatic separating brake.

In connection with fig. 16, a third embodiment of a sampling module 1 is provided, the sampling module 1 being a temperature sampling module, said sampling module 1 comprising a temperature sensor 16. Connect temperature sensor 16 on first circuit board 12, temperature sensor 16 and the contact of getting electroplax 13, acquire binding post's temperature through getting electroplax 13, make sampling module 1 have the function of detecting binding post temperature rise and temperature, it adopts the better metal material of electric conductivity and heat conductivity to prefer to get electroplax 13, temperature sensor 16 can obtain the temperature with the mode of getting electroplax 13 direct contact or not direct contact, when temperature sensor 16 gathers the temperature rise or the temperature of the binding post of circuit breaker 3, temperature sensor 16 transmits temperature signal to first circuit board 12, first microprocessor MCU1 of first circuit board 12 passes through signal transmission unit and transmits temperature signal to control module 2, control module 2 drive functional unit moves. Preferably, the temperature sensor 16 is disposed on the back surface of the first circuit board 12, the power taking plate 13 is welded on the first circuit board 12, the power taking plate 13 penetrates through the first circuit board 12, one end of the power taking plate is used for being connected with a wiring terminal of the circuit breaker, and the other end of the power taking plate is in contact connection with the temperature sensor 16.

The above three embodiments of the sampling module 1 may be used alone, or any two or three embodiments may be used in combination, for example, the current transformer 14 and the zero sequence transformer 15 are simultaneously disposed in the same sampling module 1, or the current transformer 14 and the temperature sensor 16 are simultaneously disposed in the same sampling module 1, or three embodiments are simultaneously disposed.

Preferably, the accessory module includes two sampling modules, which are respectively installed at two ends of the circuit breaker 3, the current transformer 14 and the zero sequence transformer 15 are respectively disposed in the two sampling modules 1, and the temperature sensor 16 may be disposed in any one of the sampling modules, or the temperature sensor 16 is disposed in both of the two sampling modules 1.

In connection with fig. 6 and 9-18, a specific mounting structure for a sampling module 1 is provided that enables the sampling module 1 to be equipped with one or more electronic components. The sampling module 1 comprises a first fixing piece, the first fixing piece comprises a first mounting groove 171 and a second mounting groove 172, the first mounting groove 171 is used for mounting the first circuit board 12, the second mounting groove 172 is used for mounting the current transformer 14 or the zero sequence transformer 15, the second mounting groove 172 is located below the first mounting groove 171, and a threading hole for a lead to pass through is arranged in the second mounting groove 172. Specifically, first mounting includes housing 111 and apron 112 be equipped with first mounting groove 171 and second mounting groove 172 on housing 111, apron 112 forms the installation cavity that is used for installing first circuit board 12 with first mounting groove 171 closing cap be equipped with a plurality of perforation on the apron 112, the perforation supplies to get electric board 13 and plug 121 and stretches out first mounting for be connected with circuit breaker 3's binding post, through screwing up binding post's wiring screw, makes to get electric board 13 and binding post and realize fixed connection and be connected with the electricity, gets electric board 13 and can follow binding post and gather corresponding signal, and sampling module 1 and control module 2 acquire working power supply through getting electric board 13.

Combine fig. 9, 10, 12, 14 and 15 to provide a structure of getting electric plate 13, get electric plate 13 and be straight board structure, get the one end of electric plate 13 and weld with first circuit board 12, get the other end of electric plate 13 and wear out first mounting to be equipped with the recess in the one end of wearing out first mounting and be used for being connected with binding post, the binding post department that gets electric plate 13 and be applicable to circuit breaker 3 of structure like this is equipped with busbar 34, get electric plate 13 and busbar 34 contact, when screwing up circuit breaker 3's binding screw, get electric plate 13 and circuit breaker 3's wiring board and reliably be connected.

Not set up busbar 34 in circuit breaker 3, the structure of getting electric board 13 is as shown in fig. 11, get the overall platelike structure that is the zigzag of electric board 13, get the welding of electric board 13's one end and first circuit board 12, get the other end of electric board 13 and wear out behind the first mounting along being on a parallel with the direction of circuit breaker 3 lateral wall and buckle, its end is buckled once more and is stretched to circuit breaker 3 for be connected with circuit breaker 3's binding post.

The second mounting groove 172 is located below the first mounting groove 171, threading holes and separating protrusions 173 are arranged in the second mounting groove 172, the number of the threading holes is the same as the number of poles of the circuit breaker 3, the threading holes correspond to the wiring holes 33 on the circuit breaker 3, and the threading holes are used for leading wires 35 (see fig. 5) of each pole line of the circuit breaker 3 to pass through; the number of the dividing protrusion 173 is at least one, the dividing protrusion 173 divides the second mounting groove 172 into at least two second sub-mounting grooves 174, and a threading hole is correspondingly formed in each second sub-mounting groove 174. Preferably, the second mounting groove 172 is formed in a capsule shape as shown in fig. 13, and the sidewall of the partitioning protrusion 173 is provided with an arc-shaped concave surface such that each second sub-mounting groove 174 is circular, such that the second mounting groove 172 can be used for mounting the zero sequence transformer 15 or the current transformer 14, and the first fixing member can be commonly used. The zero sequence transformer 15 is correspondingly arranged in a capsule shape, so that the zero sequence transformer 15 is attached to the inner side wall of the second mounting groove 172 for mounting, and the separation bulge 173 can correspondingly penetrate through the middle part of the zero sequence transformer 15; at least two current transformers 14 are arranged in the first fixing member, each current transformer 14 is correspondingly assembled in one second sub-installation groove 174, and two adjacent current transformers 14 are separated by a separation protrusion 173.

Further, still be equipped with first fixed part on the first mounting, first fixed part is used for cooperating with control module 2 and circuit breaker 3's casing 31, with the assembly of sampling module 1 at control module 2 and circuit breaker 3's both ends (control module 2 assembles and can be regarded as a control pole of circuit breaker 3 behind circuit breaker 3), as shown in fig. 9-15, first fixed part is for setting up buckle 18 at housing 111 edge, and is corresponding, is equipped with on control module 2 and circuit breaker 3's casing 31 with buckle 18 matched with draw-in groove 311 structure, first fixed part is not limited to buckle structure.

The control module 2 comprises a control unit and a functional unit, a second circuit board 22 is arranged in the control module 2, the second circuit board 22 is provided with the control unit, the functional unit acts under the driving of the control unit, and the functional unit comprises an automatic switching-on and switching-off unit and/or an alarm indicating unit and/or a release unit.

As shown in fig. 5 to 9 and 21 to 25, the control module 2 includes a second fixing member in which the control unit and the function unit are assembled, the second fixing member assembling the control module 2 at one side of the circuit breaker 3, and the second fixing member includes a base 211 and an upper cover 212, and has a shape similar to a case of the circuit breaker. Preferably, be equipped with on base 211 with circuit breaker 3's casing 31 complex structure of assembling, in this application, preferably be equipped with couple 2111 on base 211, be equipped with on circuit breaker 3's casing 31 with couple 2111 matched with recess 312, be equipped with the linkage hole on base 211 and be used for realizing the linkage with circuit breaker 3's operating device 32 and be connected, in addition, be equipped with the connecting hole at the second mounting, the connecting hole supplies signal transmission unit to link together control module 2 and sampling module 1.

An embodiment of a control module 2 is provided with reference to fig. 5, 9, and 21, and the embodiment of the control module 2 is an automatic switching-on/off control module, where the automatic switching-on/off control module includes a control unit, a functional unit, and a communication unit, and the functional unit includes an automatic switching-on/off unit. The automatic switching-on/off control module and the temperature sampling module provided with the temperature sampling module, the current sampling module provided with the current transformer 14 and the voltage sampling circuit in the embodiment can form an accessory module; the automatic switching-on/off control module can upload the collected temperature, current and voltage signals to an upper computer through a communication unit, judges whether overcurrent exists according to the current signals collected by the current transformer 14 to realize overcurrent protection, judges based on the collected voltage signals, and can form an accessory module for realizing undervoltage/overvoltage protection. Be equipped with second circuit board 22 and functional unit in the second mounting be equipped with the controller that is used for driving the control unit of functional unit on the second circuit board 22, in this embodiment, the functional unit includes automatic divide-shut brake unit, automatic divide-shut brake unit is including setting up brake lever 23 on the second mounting and setting up at the drive mechanism 24 and the dropout structure in second mounting middle part. The control handle 23 is linked with the handle of the circuit breaker 3, the tripping structure is linked with the operating mechanism of the circuit breaker 3, the controller can control the transmission mechanism 24 to drive the control handle 23 to drive the handle of the circuit breaker 3 to realize the switching-on operation of the circuit breaker, and the transmission mechanism 24 is controlled to drive the tripping structure to trigger the operating mechanism of the circuit breaker 3 to trip to realize the switching-off operation of the circuit breaker. Be equipped with the controller on second circuit board 22, preferred controller is microcontroller, and in the application, the microcontroller that sets up on second circuit board 22 is second microprocessor MCU2, the steerable drive mechanism 24 of second microprocessor MCU2 carries out divide-shut brake and rotates, and the signal that will gather or will gather and handle at sampling module 1 transmits to second microprocessor MCU2 of second circuit board 22, and second microprocessor MCU2 handles the judgement back with the signal that receives, and the automatic divide-shut brake of circuit breaker 3 is realized in the action of drive mechanism 24.

In this embodiment, the transmission mechanism 24 includes a motor system, a gear set in transmission connection with the motor system, and a driving assembly matched with the gear set, and the motor system is driven by the second microprocessor MCU2 to rotate in a forward or reverse direction, so as to drive the gear set to perform opening or closing rotation and to be matched with the driving assembly. When the motor system performs closing rotation, the gear set is driven to rotate towards the closing direction, the gear set enables the driving assembly to act and drives the control handle 23 to rotate towards the closing direction, the handle of the circuit breaker 3 also rotates towards the closing direction under the action of the control handle 23, and the operating mechanism 32 of the circuit breaker 3 and the contact mechanism connected to the operating mechanism 32 are driven to close; when the motor system performs opening rotation, the gear set is driven to rotate towards the opening direction, the gear set enables the driving assembly to act to drive the tripping structure, and the tripping structure triggers the operating mechanism 32 of the circuit breaker 3 to act and trip, so that the circuit breaker 3 is opened.

As shown in fig. 21, the motor system includes a motor and a worm, the worm is connected between the motor and a gear set in a transmission manner, the gear set includes a plurality of gears engaged with each other, the driving assembly includes a driving rod 242, the driving rod 242 is assembled on one gear of the gear set, the driving rod 242 can be matched with the control handle 23, preferably, a boss structure matched with the driving rod 242 is arranged on the control handle 23, when the gear set performs a closing rotation, the driving rod 242 is in limit fit with the control handle 23 to drive the control handle 23 to rotate in a closing direction, preferably, a track groove is arranged near the second fixing member near the control handle 23, and the track groove is used for limiting a movement track of the driving rod 242.

The tripping structure and the driving rod 242 are respectively located on the front side and the back side of the gear set, the tripping structure is located on the back side of the gear set, namely, the back side of the gear set is close to one side of the circuit breaker 3, the driving assembly matched with the tripping structure comprises a pushing part (not shown), the pushing part is arranged on the back side of one gear in the gear set in a protruding mode, the tripping structure comprises a pushing rod 241 and a linkage shaft 253, the pushing rod 241 is rotatably assembled in the control module 2, and the linkage shaft 253 penetrates out of the second fixing part to be linked with the operating mechanism 32 of the circuit breaker 3. Specifically, the linkage shaft 253 is linked with the lock catch 321 of the operating mechanism 32, the pushing portion is preferably a boss structure arranged on the gear, when the gear set performs opening rotation, the pushing portion enables the pushing rod 241 to push the linkage rod after rotating, the lock catch 321 rotates under the action of the linkage rod, so that the operating mechanism 32 acts, and the circuit breaker 3 is opened. The structure of the pushing rod 241 cooperating with the operating mechanism 32 of the circuit breaker 3 can be referred to fig. 22, wherein the operating mechanism 32 is located in the housing of the circuit breaker 3, the pushing rod 241 is rotatably assembled in the control module 2, and the linkage shaft 253 penetrates through the second fixing piece to be linked with the operating mechanism 32 of the circuit breaker 3.

As shown in fig. 22-25, an embodiment of a control module 2 is provided, which is a trip control module, and includes a control unit and a functional unit, the functional unit includes a trip unit, the trip unit includes a trip 251, and the controller can control the trip 251 to trigger an operating mechanism of the circuit breaker 3 to trip according to a signal from the sampling module 1. The trip control module and the current sampling module provided with the current transformer 14 of the embodiment may form an accessory module for implementing overcurrent protection; the accessory module for realizing leakage protection can be formed by the leakage sampling module provided with the zero sequence transformer 15; the judgment is carried out based on the voltage signal collected by the sampling module, and an accessory module for realizing undervoltage/overvoltage protection can be formed. The tripping mechanism 25 comprises a tripping device 251 driven by a second microprocessor MCU2 of the second circuit board 22, the tripping device 251 is an electromagnetic tripping device, one end of a top rod 252 of the tripping device 251 pushes a linkage shaft 253, and preferably, the top rod 252 enables the linkage shaft 253 to drive the operating mechanism 32 to act by triggering a push rod 241 in a driving assembly. When the second microprocessor MCU2 receives a signal transmitted by the sampling module 1, and when the second microprocessor MCU2 judges that the main circuit of the circuit breaker 3 has overcurrent and the overcurrent reaches a preset threshold value of the second microprocessor MCU2, the second microprocessor MCU2 drives the release 251 to act, and the ejector rod 252 of the release 251 acts, so that the push rod 241 pushes the linkage shaft 253 to act to open the circuit breaker 3; in addition, when the second microprocessor MCU2 receives the signal transmitted by the sampling module 1 and determines that the circuit breaker 3 has an over/under voltage fault, an arc fault, and a leakage fault, the trip unit 251 may be driven to operate, so as to open the circuit breaker 3.

As shown in fig. 25, a further embodiment of the control module 2 is provided, wherein the functional unit comprises a trip mechanism 25, and the control module 2 is further provided with a test button 26 and a test circuit, wherein the test circuit can be operated by the test button 26 to generate a simulated leakage current for detecting the action characteristic of the circuit breaker 3. The test button 26 is assembled on the second fixing part, the test circuit is connected to the main circuit of the circuit breaker 3 through the second circuit board 22, and preferably, the on-off of the test circuit is controlled by a microswitch 222 arranged on the second circuit board 22, and the microswitch 222 can be triggered by the test button 26.

Through assemble above-mentioned accessory module on having the circuit breaker, can reform transform into the circuit breaker that has multiple functions with the circuit breaker of function singleness, make the circuit breaker after the transformation can gather the various running state information of circuit breaker main line to realize automatic divide-shut brake and/or send the warning under the effect of functional unit according to running state information.

Another embodiment of the control module 2 is described with reference to fig. 7 to 8 and fig. 23 to 25, where the functional unit in the control module 2 includes a trip mechanism 25, and further includes an alarm indicating unit, the alarm indicating unit is configured to indicate an operation condition of a main circuit of each pole of the circuit breaker 3, the alarm indicating unit is disposed on the second circuit board 22, the alarm indicating unit is controlled by the second microprocessor MCU2 on the second circuit board 22, and after the sampling module 1 transmits a signal to the control module 2, and the control module 2 processes and determines that a fault exists in the main circuit, the alarm indicating unit is triggered to send an alarm.

Specifically, signals such as voltage, current or temperature are obtained through the sampling circuit at the first microprocessor MCU1 of sampling module 1, the sampling circuit includes the electronic component who is used for gathering circuit breaker 3 main line signal, the signal unit judges the fault type and the fault location that circuit breaker 3 took place according to the signal that the sampling circuit gathered, fault location is which utmost point that the trouble was located circuit breaker 3, first microprocessor MCU1 forms the fault code according to preset's rule and sends to the second microprocessor MCU2 of control module 2 through the signal transmission unit, second microprocessor MCU2 is according to preset's rule translation fault code, and trigger the warning instruction unit and send out the warning. For example, a two-digit code is used, the first digit "1-8" represents a fault position, namely four-phase wiring terminals (an incoming line terminal and an outgoing line terminal) of the circuit breaker 3, the second digit "1-6" represents a fault type, when the first microprocessor MCU1 judges that the temperature of the incoming line terminal of the phase B is too high, the fault code "24" is sent out, and after receiving the fault code, the second microprocessor MCU2 translates the fault information into corresponding fault information and then drives the alarm indicating unit to send out an alarm. Of course, other types of encoding rules are equally applicable.

In this embodiment, the alarm indication unit includes one or more of a state indication mechanism, an audible alarm device, and a temperature indication mechanism.

An embodiment of the alarm indicating unit in the first control module 2 is provided in connection with fig. 7 and 23, the alarm indicating unit includes a status indicating mechanism, the status indicating mechanism includes a first light emitting element 223 and a first light guiding column 224, preferably, the first light emitting element 223 is a light emitting diode, the first light guiding column 224 corresponds to the first light emitting element 223, and a part of the first light guiding column 224 is exposed on the surface of the control module 2, particularly on the surface of the second fixing member, for displaying the status of the first light emitting element 223, which is beneficial for observing the status of the first light emitting element 223, the first light emitting element 223 can indicate different statuses of the circuit breaker 3 under the control of the second microprocessor MCU2, preferably, the first light emitting element 223 indicates the operating status of the circuit breaker 3 by displaying a color or a light emitting frequency, for example, when the circuit breaker 3 is in a normal operating status, the first light emitting element 223 displays a green color, the first light emitting element 223 is displayed in red when the breaker 3 trips due to overcurrent, and in yellow when the breaker 3 is over/under-voltage, etc.

In connection with fig. 24, an embodiment of the alarm indication unit in the second control module 2 is provided, where the sound alarm device includes a buzzer 228 and an alarm, and the second microprocessor MCU2 triggers the buzzer 228 to alarm when the circuit breaker 3 has over-current, over-under-voltage and leakage fault, so as to remind the circuit breaker 3 of fault, and similarly, the number of the buzzers 228 may be multiple, so that each pole of the circuit breaker 3 corresponds to one buzzer 228; in the presence of an arc fault at the circuit breaker 3, the second microprocessor MCU2 activates an alarm which detects the presence of a fire hazard. Preferably, the first embodiment of the alarm indication unit in the control module 2 is used in combination with the second embodiment, and at this time, the sound alarm device may be provided with only one buzzer 229, and the fault position is indicated by the plurality of first light-emitting elements 223 in the state indication mechanism, so that the alarm is provided from both sound and light, which is more efficient and is beneficial for workers to find out the fault in time.

In connection with fig. 7 and 24, an embodiment of the alarm indication unit in the third control module 2 is provided, said alarm indication unit further comprising a temperature indication mechanism, the temperature indicating mechanism includes a third circuit board 227, a second light emitting element 225 and a second light guiding pole 226, the third circuit board 227 is connected to the second circuit board 22, the second light emitting device 225 is disposed on the third circuit board 227 for indicating temperature rise or high temperature of the connection terminal of the circuit breaker 3, preferably, a plurality of second light emitting devices 225 and a plurality of second light guiding posts 226 are disposed respectively, the second light emitting elements 225 and the second light guiding bars 226 are correspondingly disposed, each second light emitting element 225 correspondingly displays the temperature rise or the higher temperature of each terminal of the circuit breaker 3, the second light guide bar 226 is partially exposed on the surface of the control module 2, specifically on the surface of the second fixing member, and is used for displaying the state of the second light emitting element 225. The alarm indicating unit of the present embodiment may be used alone, or may be used in combination with any one or both of the first embodiment and the second embodiment of the alarm indicating unit.

Further, when the present application is applied to the multi-pole circuit breaker 3, the alarm indication unit further includes a fault display screen 229 (see fig. 8), and the fault display screen 229 is used in cooperation with one or more of the status indication mechanism and the temperature indication mechanism in the control module 2, and may also replace the light emitting elements and the light guiding bars in the status indication mechanism and the temperature indication mechanism to directly display the fault type and the fault location.

As shown in fig. 8, the fault display 229 is disposed on the surface of the second fixing member of the control module 2, the fault display 229 is connected to the second circuit board 22 and controlled by the second microprocessor MCU2, when the control module 2 obtains the type and position of the fault of the circuit breaker 3 through the sampling module 1, the second microprocessor MCU2 controls the fault display 229 to correspondingly display the type and position of the fault, preferably, the fault display 229 is a digital tube or a liquid crystal display panel. The fault display 229 may also be applied to a circuit breaker 3 having only two poles, but is particularly suitable for assembling a multi-pole circuit breaker 3, and is beneficial to the control module 2 to accurately display the type and position of a fault, so as to find and process the fault of the circuit breaker 3 in time.

In addition, the number of the control modules 2 can be multiple, and each control module 2 can be provided with only one functional unit, for example, one control module 2 is provided with an automatic switching-on/off unit, and the other control module 2 is provided with an alarm indicating unit; alternatively, the state indicating means, the sound alarm device, and the temperature indicating means in the alarm indicating means are provided in a plurality of control modules 2 in a dispersed manner.

Preferably, control module 2 still includes the communication unit, the communication unit is used for making control module 2 and receiving equipment carry out the communication and is connected, and communication equipment is including piecing together control module 2 another circuit breaker 3, outside customer end, user APP, cloud platform and equipment etc. in addition, has a plurality ofly when piecing together control module 2 at same circuit breaker 3, and a plurality of control module 2 also are equipped with the communication unit, can realize the communication connection equally.

Preferably, a signal transmission unit for realizing signal exchange is arranged between the sampling module 1 and the control module 2, the signal transmission unit includes a socket 221 arranged on the second circuit board 22 and a plug 121 arranged on the first circuit board 12, and the plug 121 is matched with the socket 221, so that the signal transmission between the signal unit arranged on the first circuit board 12 and the controller arranged on the second circuit board 22 is realized.

When the first circuit board 12 of the sampling module 1 needs to be connected to a plurality of control modules 2, a plurality of plugs 121 may be correspondingly disposed on the first circuit board 12, and each plug 121 may be correspondingly connected to the second circuit board 22 of a different control module 2.

Preferably, an intermediate circuit board 19 is arranged between the first circuit board 12 and the second circuit board 22, as shown in fig. 17 to 20, said intermediate circuit board 19 preferably being arranged in a first fixing together with the first circuit board 12, the corresponding first fixing also comprising an expansion housing for expansion to cover the intermediate circuit board 19. The first circuit board 12 is provided with an extension plug 122 connected with the intermediate circuit board 19, the intermediate circuit board 19 is provided with an intermediate plug 191 and an intermediate socket 192, wherein the intermediate socket 192 is matched with the extension plug 122 of the first circuit board 12, and the intermediate plug 191 is matched with the socket 221 of the second circuit board 22. As shown in fig. 17 to 19, an intermediate socket 192 is provided on one side of the intermediate circuit board 19, the intermediate socket 192 is mated with the plug 121 on the second circuit board 22, an intermediate plug 191 is provided on the other side of the intermediate circuit board 19, in fig. 18 to 19, the intermediate circuit board 19 further includes a second extension plug 193 for mating with another intermediate circuit board 19, the intermediate plug 191 is connected with the socket 221 on the second circuit board 22 in the control module 2, and the second extension plug 193 is used for connecting with the next intermediate circuit board 19, so that the structure is suitable for connecting a plurality of intermediate circuit boards 19 to be respectively connected with a plurality of control modules 2, the plurality of control modules 2 can be connected for signal transmission through the plurality of intermediate circuit boards 19, the intermediate circuit board 19 connected with the last control module 2, as shown in fig. 20, one intermediate socket 192 is provided on one side of the intermediate circuit board 19, on the other side of the intermediate circuit board 19, an intermediate plug 191 is provided, and the second extension plug 193 is not provided.

The utility model provides a circuit breaker 3, includes casing 31 be equipped with two at least looks utmost point in the casing 31, every looks utmost point is including setting up the binding post at both ends, and one of them binding post is as incoming line terminal, and another binding post is as terminal outgoing lines be equipped with handle, operating device 32 and contact mechanism between the binding post, handle and operating device 32 linkage, adjacent looks utmost point handle and operating device 32 linkage are connected, and contact mechanism in every utmost point carries out the divide-shut brake under operating device 32's drive. Sampling module 1 has been pieced together at casing 31's both ends that are equipped with binding post, sampling module 1 is connected with every binding post of looks utmost point one side piece equipment of casing 31 has control module 2, be equipped with the functional unit among the control module 2, automatic divide-shut brake unit and circuit breaker 3 linkage in the functional unit are connected, and is concrete, and automatic divide-shut brake unit includes brake valve lever 23, drive mechanism 24 and tripping device 25, brake valve lever 23 is connected with the handle linkage, and drive mechanism 24 and tripping device 25 are connected with the operating device 32 linkage of circuit breaker 3 respectively.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. An accessory module for a circuit breaker, comprising: the device comprises at least one control module (2) and at least one sampling module (1), wherein the control module (2) is detachably assembled on the side surface of a circuit breaker (3); sampling module (1) detachable assembles the both ends that are equipped with binding post in circuit breaker (3), signal transmission to control module (2) that sampling module (1) will gather from circuit breaker (3), control module (2) include the control unit and functional unit, and the signal drive functional unit action of control module (2) according to sampling module (1) transmission, sampling module is including the electronic component who is used for gathering circuit breaker (3) main line signal, electronic component includes current transformer (14) and/or zero sequence transformer (15) and/or temperature sensor (16) and/or voltage sampling circuit.

2. An accessory module for a circuit breaker as claimed in claim 1, wherein: the binding post of circuit breaker (3) includes incoming line terminal and terminal outgoing lines, the figure of sampling module (1) is two, and two sampling module (1) detachable assemblies are equipped with the both ends of incoming line terminal and terminal outgoing lines respectively in circuit breaker (3).

3. An accessory module for a circuit breaker as claimed in claim 1, wherein: the number of the sampling modules (1) is two, a current transformer (14) used for collecting current signals in a main circuit of the circuit breaker (3) is arranged in one of the sampling modules (1), and a zero sequence transformer (15) used for collecting leakage current signals in the main circuit of the circuit breaker (3) is arranged in the other sampling module (1).

4. An accessory module for a circuit breaker as claimed in claim 1, wherein: sampling module (1) includes first mounting be provided with first circuit board (12) in the first mounting be connected with electricity-taking board (13) on first circuit board (12), current transformer (14) are connected with first circuit board (12), electricity-taking board (13) are used for being connected with the binding post of circuit breaker (3), and first mounting is equipped with the through wires hole at the mounted position that corresponds current transformer (14), and current transformer (14) will sense current signal transmission to first circuit board (12).

5. An accessory module for a circuit breaker as claimed in claim 1, wherein: sampling module (1) includes first mounting be provided with first circuit board (12) in the first mounting be connected with electricity-taking board (13) on first circuit board (12), zero sequence transformer (15) are connected with first circuit board (12), and first mounting is equipped with the through wires hole at the mounted position that corresponds zero sequence transformer (15), and leakage current signal transmission to first circuit board (12) that zero sequence transformer (15) will sense.

6. An accessory module of a circuit breaker as claimed in claim 4 or 5, wherein: still be connected with temperature sensor (16) on first circuit board (12), temperature sensor (16) and power board (13) contact are used for acquireing the temperature of circuit breaker (3) binding post, and temperature sensor (16) transmit temperature signal to first circuit board (12).

7. An accessory module for a circuit breaker as claimed in claim 1, wherein: sampling module (1) includes first mounting, first mounting includes first mounting groove (171) and second mounting groove (172), first mounting groove (171) are used for installing first circuit board (12), second mounting groove (172) are used for installing current transformer (14) or zero sequence transformer (15), and second mounting groove (172) are located the below of first mounting groove (171) be equipped with the through wires hole that is used for making the wire to pass in second mounting groove (172).

8. An accessory module for a circuit breaker as claimed in claim 7, wherein: a separation bulge (173) is arranged in the second installation groove (172), the separation bulge (173) separates the second installation groove (172) into at least two second sub-installation grooves (174), and a threading hole is correspondingly arranged in each second sub-installation groove (174).

9. An accessory module for a circuit breaker as claimed in claim 8, wherein: the second mounting groove (172) is in the shape of a capsule, the side wall of the separation protrusion (173) is an arc-shaped concave surface, and the separation protrusion (173) separates the second mounting groove (174) into a circular shape.

10. An accessory module for a circuit breaker as claimed in claim 7, wherein: first circuit board (12) are installed in first mounting groove (171), and first circuit board (12) are equipped with towards the front of circuit breaker and get electric board (13) and be used for plug (121) be connected with control module (2), and the back of first circuit board (12) is equipped with temperature sensor (16), gets electric board (13) and runs through first circuit board (12), and one end is used for being connected with the binding post of circuit breaker, and the other end is connected with temperature sensor (16) contact.

11. An accessory module of a circuit breaker as claimed in claim 2 or 3, wherein: the two sampling modules (1) are respectively connected with an incoming line terminal and an outgoing line terminal of the circuit breaker (3), wherein the sampling module (1) connected to the incoming line terminal is connected with the incoming line terminal to provide a working power supply for the whole accessory module.

12. An accessory module for a circuit breaker as claimed in claim 1, wherein: the sampling module (1) comprises an electronic element and a first microprocessor, wherein the electronic element is used for acquiring a main line signal of the circuit breaker (3), and the electronic element is connected with the first microprocessor.

13. An accessory module of a circuit breaker as claimed in claim 1 or 3, wherein: the functional unit comprises an automatic switching-on and switching-off unit and/or an alarm indicating unit and/or a release unit.

14. An accessory module for a circuit breaker as claimed in claim 13, wherein: the control module (2) further comprises a communication unit, and the communication unit is connected with the control unit.

15. An accessory module of a circuit breaker as claimed in claim 1 or 3, wherein: the number of the control modules (2) is at least two, the functional unit of one control module (2) comprises an automatic switching-on/off unit, and the functional unit of the other control module (2) comprises an alarm indicating unit and/or a release unit.

16. An accessory module for a circuit breaker as claimed in claim 1, wherein: control module (2) includes the second mounting, the second mounting includes base (211) and upper cover (212) be equipped with couple (2111) of piecing together on base (211) on circuit breaker (3) be equipped with on casing (31) of circuit breaker (3) with couple (2111) matched with recess (312).

17. An accessory module for a circuit breaker as claimed in claim 1, wherein: control module (2) include second circuit board (22) and automatic divide-shut brake unit, automatic divide-shut brake mechanism includes brake valve lever (23), drive mechanism (24) and tripping structure, brake valve lever (23) are connected with the handle linkage of circuit breaker (3), and brake valve lever (23) are connected with drive mechanism (24) linkage, and tripping structure and the operating device linkage of circuit breaker (3) are equipped with the controller on second circuit board (22), the controller can drive brake valve lever (23) and drive the handle that circuit breaker (3) were realized to the handle that drive valve lever (3) were driven according to signal control drive mechanism (24) that come from sampling module (1) and realize the combined floodgate operation of circuit breaker, just the controller can control drive operating device that tripping structure can drive circuit breaker (3) and trip the separating brake operation of circuit breaker.

18. An accessory module of a circuit breaker as claimed in claim 1 or 3, wherein: the control module (2) comprises a second circuit board (22) and a tripper unit, the tripper unit comprises a tripper (251), a controller is arranged on the second circuit board (22), and the controller can control the tripper (251) to trigger an operating mechanism of the circuit breaker (3) to trip according to a signal from the sampling module (1).

19. An accessory module for a circuit breaker as claimed in claim 18, wherein: the control module (2) is further provided with a test button (26) and a test circuit which is operated by the test button (26) for generating a simulated leakage current.

20. An accessory module for a circuit breaker as claimed in claim 1, wherein: the sampling module (1) comprises a first circuit board (12), a signal unit is arranged on the first circuit board (12), the control module (2) comprises a second circuit board (22), and a controller is arranged on the second circuit board (22); the sampling module (1) and the control module (2) carry out signal transmission through a signal transmission unit, the signal transmission unit comprises a plug (121) arranged on the first circuit board (12) and a socket (221) arranged on the second circuit board (22), and the plug (121) and the socket (221) are matched to realize signal transmission between the signal unit and the controller.

21. An accessory module for a circuit breaker as claimed in claim 20, wherein: the figure of control module (2) is a plurality of, and a plurality of control module (2) set up side by side in the same one side of circuit breaker (3), signal transmission unit still includes middle circuit board (19), is equipped with extension plug (122) of being connected with middle circuit board (19) on first circuit board (12) be equipped with middle plug (191) and middle socket (192) on middle circuit board (19), middle socket (192) cooperate with extension plug (122) of first circuit board (12), and middle plug (191) cooperate with socket (221) of second circuit board (22) respectively.

22. An accessory module for a circuit breaker as claimed in claim 21, wherein: the intermediate circuit board (19) further comprises a second extension plug (193) for mating with another intermediate circuit board (19).

23. A circuit breaker, characterized by: accessory module equipped with a circuit breaker according to any of claims 1-22.

24. A circuit breaker comprising a casing (31), at least two phase poles being provided in the casing (31), each phase pole comprising a connection terminal provided at both ends, characterized in that: an accessory module according to any one of claims 1 to 22 is assembled on the housing (31), the sampling module (1) being connected to terminals of each phase of the circuit breaker (3).