CN220253153U - Circuit breaker - Google Patents

Abstract

The present utility model relates to a circuit breaker. The circuit breaker includes: the circuit breaker main body comprises a shell, and a connecting circuit board, a temperature acquisition circuit board and a connecting bus which are all arranged on the shell; the connecting circuit board is provided with a third interface; the intelligent control module is arranged on the shell and is provided with a fifth interface which is in plug-in fit with the third interface; the circuit board is provided with a wire inlet temperature sensor group for detecting the temperature of each phase of wire inlet of the circuit breaker and a wire outlet temperature sensor group for detecting the temperature of each phase of wire outlet of the circuit breaker, and the connecting bus comprises a wire inlet bus for electrically connecting the wire inlet temperature sensor group with the connecting circuit board and a wire outlet bus for electrically connecting the wire outlet temperature sensor group with the connecting circuit board.

Description

Circuit breaker

Technical Field

The utility model relates to the technical field of electric devices, in particular to a circuit breaker.

Background

The circuit breaker is a power distribution electrical appliance used in a power grid, and can be used for switching on, carrying and breaking current under normal circuit conditions, and also can be used for switching on, carrying for a certain time and breaking current under specified abnormal conditions (such as overload, short circuit, undervoltage and single-phase earth fault). With the development of the power industry, the design of the molded case circuit breaker is developed towards miniaturization and intellectualization.

In general, the intelligent molded case circuit breaker has the cable temperature of 3 inlet wires of ABC phase and 3 outlet wires of ABC phase to be measured, and 6 temperature sensors are needed, and all the 6 temperature sensors need to be connected into an intelligent module for signal conversion and processing, so that the actual temperature is finally obtained. The traditional temperature measurement mode of the intelligent molded case circuit breaker is to collect and process signals of each temperature sensor respectively, each temperature sensor needs to be led to the intelligent module from a cable joint, too much leads occupy excessive space and resources of the intelligent module, and the intelligent molded case circuit breaker is not beneficial to miniaturization of the intelligent molded case circuit breaker.

Disclosure of Invention

Based on this, it is necessary to provide a circuit breaker that ameliorates the above-mentioned drawbacks, in order to solve the problem of the prior art that the electronic control part is damaged or the whole circuit breaker is scrapped due to the fact that the electronic control part cannot be replaced alone after the life time expires, resulting in the waste of social and economic resources.

A circuit breaker, comprising:

the circuit breaker main body comprises a shell, and a connecting circuit board, a temperature acquisition circuit board and a connecting bus which are all arranged on the shell; the connecting circuit board is provided with a third interface; a kind of electronic device with high-pressure air-conditioning system

The intelligent control module is arranged on the shell and provided with a fifth interface which is in plug fit or fixed electric connection fit with the third interface;

the circuit board is provided with a wire inlet temperature sensor group for detecting the temperature of each phase of wire inlet of the circuit breaker and a wire outlet temperature sensor group for detecting the temperature of each phase of wire outlet of the circuit breaker, and the connecting bus comprises a wire inlet bus for electrically connecting the wire inlet temperature sensor group with the connecting circuit board and a wire outlet bus for electrically connecting the wire outlet temperature sensor group with the connecting circuit board.

In one embodiment, the incoming line temperature sensor group comprises three incoming line temperature sensors, and the three incoming line temperature sensors are respectively used for measuring the temperature of a three-phase incoming line of the circuit breaker;

the incoming line temperature sensor group comprises three outgoing line temperature sensors, and the three outgoing line temperature sensors are respectively used for measuring the temperature of the three-phase outgoing line of the circuit breaker.

In one embodiment, a storage module is disposed on the connection circuit board, and the storage module is used for storing the breaker data.

In one embodiment, the housing is provided with a first mounting groove, and the intelligent control module is pluggable and mounted in the first mounting groove;

at least a region of the connection circuit board having the third interface is exposed to the bottom of the first mounting groove.

In one embodiment, the housing has a receiving cavity therein adjacent to the first mounting slot, the connection circuit board is disposed between the first mounting slot and the receiving cavity, and the transformer assembly is disposed within the receiving cavity; the connecting circuit board is also provided with a first interface, and the transformer component is provided with a fourth interface which is in plug-in fit with the first interface;

the shell is provided with a first wiring hole communicated with the accommodating cavity, and the first wiring hole is used for the connection bus to pass through.

In one embodiment, the first interface is located at a side of the connection circuit board facing the accommodating cavity; the third interface is positioned on one side of the connecting circuit board facing the first mounting groove.

In one embodiment, the first mounting groove is located at the top of the breaker main body, the temperature acquisition circuit board is disposed at the bottom of the breaker main body, the accommodating cavity is located at one side, close to the temperature acquisition circuit board, of the first mounting groove, and the first routing hole penetrates from the accommodating cavity to the bottom of the housing.

In one embodiment, the transformer assembly comprises a housing, and a transformer and a signal circuit board both disposed on the housing; the mutual inductor is electrically connected with the signal circuit board, and the fourth interface is positioned on the signal circuit board;

the housing has a second routing hole through which the connection bus passes.

In one embodiment, the circuit breaker further comprises a first accessory function module mounted on the housing;

the first accessory function module is provided with a seventh interface, and the intelligent control module is also provided with a ninth interface which is in plug-in fit with the seventh interface.

In one embodiment, the circuit breaker body further includes a switch circuit board disposed on the housing, the switch circuit board electrically connected to the first accessory function module and having a sixth interface;

the circuit breaker further includes a second accessory function module removably mounted to the housing, the second accessory function module having an eighth interface for mating with the sixth interface.

According to the circuit breaker, the temperature sensor for collecting the temperature is divided into the incoming line temperature sensor group and the outgoing line temperature sensor group, the incoming line temperature sensor group is utilized to detect the temperature of each phase incoming line of the circuit breaker, and the outgoing line temperature sensor group is utilized to detect the temperature of each phase outgoing line of the circuit breaker. The incoming line bus is connected with the incoming line temperature sensor group and the intelligent control module, and the outgoing line bus is connected with the outgoing line temperature sensor group and the intelligent control module. The temperature sensing signals detected and output by the temperature sensors in the incoming line temperature sensor group and the outgoing line temperature sensor group are transmitted to the intelligent control module through the bus structure. The intelligent control module is combined with the identification information of the temperature sensors and preset binding data to determine the phase positions of the temperature sensors, so that the wire temperature of each phase of incoming wire and each phase of outgoing wire of the circuit breaker is determined, the number of leads of the temperature sensors is effectively reduced, and the circuit breaker is beneficial to miniaturization of the volume of the circuit breaker.

Drawings

FIG. 1 is a schematic diagram of an interrupt router according to an embodiment of the present utility model;

fig. 2 is a schematic view of the circuit breaker shown in fig. 1 with a housing omitted (the intelligent control module and the second accessory function module are plugged into the circuit breaker body);

fig. 3 is a schematic view of the circuit breaker of fig. 1 with the housing omitted (the intelligent control module and the second accessory function module separated from the circuit breaker body);

fig. 4 is a schematic structural view of a breaker body of the breaker shown in fig. 1;

fig. 5 is a partially exploded view of the circuit breaker of fig. 1;

fig. 6 is a schematic diagram of the circuit breaker of fig. 1 with the housing and temperature acquisition circuit board omitted.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 3, an embodiment of the present utility model provides a circuit breaker, which includes a circuit breaker body 10 and an intelligent control module 20. The breaker main body 10 includes a housing 11, and a connection circuit board 12, a temperature acquisition circuit board 14, and a connection bus all provided on the housing 11. The connection circuit board 12 has a third interface 121. The temperature acquisition circuit board 14 is electrically connected with the connection circuit board 12 through a connection bus, so that the temperature acquisition circuit board 14 and the connection circuit board 12 are electrically connected with each other, and further data and/or signals can be transmitted between the temperature acquisition circuit board 14 and the connection circuit board 12.

Mounted on the housing 11 is an intelligent control module 20, which intelligent control module 20 has a fifth interface 21 which is in plug-in fit with a third interface 121. That is, the electrical connection of the intelligent control module 20 to the connection circuit board 12 is realized by the plug-in connection of the fifth interface 21 to the third interface 121, so that data and/or signals can be transferred between the intelligent control module 20 and the connection circuit board 12. Of course, in other embodiments, the fifth interface 21 and the third interface 121 may also be in a fixed electrical connection, i.e., they are fixed and electrically connected to each other.

The temperature acquisition circuit board 14 is provided with an incoming line temperature sensor group for detecting the temperature of each phase incoming line of the circuit breaker and an outgoing line temperature sensor group for detecting the temperature of each phase outgoing line of the circuit breaker. The connection bus includes an incoming line bus for electrically connecting the incoming line temperature sensor group with the connection circuit board 12 and an outgoing line bus for electrically connecting the outgoing line temperature sensor group with the connection circuit board 12. Since the intelligent control module 20 is electrically connected with the connection circuit board 12 through the fifth interface 21 and the third interface 121, the incoming line temperature sensor group and the outgoing line temperature sensor group are electrically connected with the intelligent control module 20 through the connection circuit board 12.

According to the circuit breaker, the temperature sensor for collecting the temperature is divided into the incoming line temperature sensor group and the outgoing line temperature sensor group, the incoming line temperature sensor group is utilized to detect the temperature of each phase incoming line of the circuit breaker, and the outgoing line temperature sensor group is utilized to detect the temperature of each phase outgoing line of the circuit breaker. The incoming line bus is electrically connected with the incoming line temperature sensor group and the intelligent control module 20, and the outgoing line bus is electrically connected with the outgoing line temperature sensor group and the intelligent control module 20. That is, temperature sensing signals detected and output by the temperature sensors in the incoming line temperature sensor group and the outgoing line temperature sensor group are transmitted to the intelligent control module 20 through the bus structure. The intelligent control module 20 is combined with the identification information of the temperature sensors and preset binding data to determine the phase positions of the temperature sensors, so that the cable temperatures of the incoming lines of each phase and the outgoing lines of each phase of the circuit breaker are determined, the number of leads of the temperature sensors is effectively reduced, and the circuit breaker is beneficial to miniaturization of the volume of the circuit breaker.

In particular, in the embodiment, the connection circuit board 12 is provided with a memory module. The storage module is used for storing breaker data. In this way, the storage module for storing the data of the circuit breaker is disposed on the connection circuit board 12, so that the data is not lost when the intelligent control module 20 is damaged, and the circuit breaker can work normally after the new intelligent control module 20 is replaced. Alternatively, the Memory module may be a nonvolatile Memory, which may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like.

In particular embodiments, the incoming line temperature sensor group includes three incoming line temperature sensors. The three incoming line temperature sensors are respectively used for measuring the temperature of the three-phase incoming line of the circuit breaker. The outgoing line temperature sensor group comprises three outgoing line temperature sensors. The three outlet temperature sensors are respectively used for measuring the temperature of the three-phase outlet of the circuit breaker. Thus, three incoming line temperature sensors and three outgoing line temperature sensors are integrally arranged on the temperature acquisition circuit board 14, which is beneficial to simplifying the installation structure.

Further, the three incoming line temperature sensors are an A-phase incoming line temperature sensor, a B-phase incoming line temperature sensor and a C-phase incoming line temperature sensor respectively, and are used for detecting temperatures of an A-phase incoming line, a B-phase incoming line and a C-phase incoming line of the circuit breaker respectively. The a-phase incoming line temperature sensor, the B-phase incoming line temperature sensor and the C-phase incoming line temperature sensor all transmit temperature sensing signals to the intelligent control module 20 through an incoming line bus. The three outlet temperature sensors are an A-phase outlet temperature sensor, a B-phase outlet temperature sensor and a C-phase outlet temperature sensor respectively and are used for detecting the temperatures of an A-phase outlet, a B-phase outlet and a C-phase outlet of the circuit breaker. The a-phase outlet temperature sensor, the B-phase outlet temperature sensor and the C-phase outlet temperature sensor all transmit temperature sensing signals to the intelligent control module 20 through an outlet bus. The intelligent control module 20 receives temperature sensing signals output by the incoming bus and the outgoing bus.

Specifically, the intelligent control module 20 is electrically connected with the incoming line temperature sensor group and the outgoing line temperature sensor group through the bus structure respectively, and the identification information of each temperature sensor obtained through searching is stored and used for being communicated with each temperature sensor to receive temperature sensing signals. In addition, the temperature sensor may also carry its own identification information each time the temperature sensing signal is output, so that the intelligent control module 20 knows which temperature sensor the temperature sensing signal is sent by. The intelligent control module 20 can determine the temperature values detected by the temperature sensors according to the temperature sensing signals, and because the bus structures of the two groups of temperature sensors are separated, the intelligent control module 20 can also know whether the two groups of temperature values are respectively corresponding to incoming lines or outgoing lines. The identification information is unique identification information of the temperature sensor, and the type of the identification information is not unique, and may be a use number, a code, an ID (Identity, identity number) or the like, and in this embodiment, the ID is used as the identification information.

Specifically, in the production process of the circuit breaker, the A, B, C phase of the circuit breaker is respectively supplied with current for calibration test, and the phase position of each temperature sensor and the identification information are calibrated and bound to obtain preset binding data and stored in the storage module. After receiving the temperature sensing signals output by the incoming line bus and the outgoing line bus, the intelligent control module 20 combines preset binding data according to the IDs of the temperature sensors, so that the phase position of the temperature sensor outputting the temperature sensing signals can be known. For example, the preset binding data includes wire inlet group binding data and wire outlet group binding data, the wire inlet group binding data includes IDs corresponding to the a-phase wire inlet temperature sensor, the B-phase wire inlet temperature sensor and the C-phase wire inlet temperature sensor, respectively, and the wire outlet group binding data includes IDs corresponding to the a-phase wire outlet temperature sensor, the B-phase wire outlet temperature sensor and the C-phase wire outlet temperature sensor, respectively. The intelligent control module 20 can know which incoming line temperature sensor is respectively sending the temperature sensing signal output by the incoming line bus by combining the incoming line group binding data and the ID of each temperature sensor outputting the temperature sensing signal in the incoming line temperature sensor group. Similarly, the intelligent control module 20 combines the binding data of the outgoing line group and the IDs of the temperature sensors outputting the temperature sensing signals in the outgoing line temperature sensor group, so as to know which outgoing line temperature sensor the temperature sensing signals output by the outgoing line bus are respectively sent.

Further, during the calibration test operation: the automatic production line applies phase A current to the circuit breaker, and the temperature of the cable continuously rises along with the duration of the current. The intelligent control module 20 continuously measures the temperature detected by the temperature sensor, compares the measured temperature value with the temperature value stored at the beginning of calibration, and when a certain temperature rising value is greater than 2 ℃, the processor recognizes the ID corresponding to the temperature as the ID of the a-phase temperature sensor. When the A phase of the incoming line and the outgoing line are found, the automatic production line adds B phase current to the circuit breaker, the intelligent control module 20 continuously measures the remaining 4 sensor temperatures, and when two temperature rising values are detected to be greater than 2 ℃, IDs corresponding to the two temperatures are identified as IDs of B phase temperature sensors. Meanwhile, the intelligent control module 20 recognizes the remaining two temperature correspondence IDs, which have not risen, as the IDs of the C-phase temperature sensors. The intelligent control module 20 stores the ID and the position information of the temperature sensor in the above-mentioned storage module, and the binding procedure is ended.

Referring to fig. 2 to 4, in the embodiment of the present application, the housing 11 has a first mounting groove 1131, and the intelligent control module 20 is removably mounted in the first mounting groove 1131. The area of the connection circuit board 12 having at least the third interface 121 is exposed at the bottom of the first mounting groove 1131, so that when the intelligent control module 20 is inserted into the first mounting groove 1131, the fifth interface 21 on the intelligent control module 20 can be directly inserted into the third interface 121 of the connection circuit board 12, that is, the fifth interface 21 is in plug-in fit with the third interface 121, so as to realize the electrical connection between the intelligent control module 20 and the connection circuit board 12. So, when the intelligent control module 20 is required to be dismounted, the intelligent control module 20 is pulled out from the first mounting groove 1131, the intelligent control module 20 is mounted and dismounted conveniently and rapidly, and the intelligent control module 20 can be automatically electrically connected with the connecting circuit board 12 when being inserted into the first mounting groove 1131, so that the wiring connection is not required, and the wiring is greatly reduced.

It should be noted that the number of the third interfaces 121 connected to the circuit board 12 and the fifth interfaces 21 on the intelligent control module 20 may be two or more, so long as the third interfaces 121 connected to the circuit board 12 and the fifth interfaces 21 on the intelligent control module 20 are arranged in a one-to-one correspondence, which is not limited herein.

It should be further noted that, when the electronic components in the intelligent control module 20 are damaged or the service life expires, the intelligent control module 20 may be pulled out from the first mounting groove 1131 of the housing 11, and then a new intelligent control module 20 may be reinserted into the first mounting groove 1131 of the housing 11, so that the whole circuit breaker is not required to be scrapped, and the waste of resources is avoided.

In particular, in the embodiment, the housing 11 has a receiving cavity (shown) adjacent to the first mounting groove 1131. The circuit breaker further includes a transformer assembly 13 disposed in the receiving cavity, and the connection circuit board 12 is disposed between the first mounting groove 1131 and the receiving cavity, and the connection circuit board 12 further has a first interface 122. The transformer assembly 13 has a fourth interface (not shown) that is a plug-in fit with the first interface 122. That is to say that the mutual inductor assembly 13 and the connection circuit board 12 are electrically connected to each other by means of the plug-in connection of the fourth interface with the first interface 122, so that a data and/or signal transmission between the mutual inductor assembly 13 and the connection circuit board 12 is possible. In this way, the connection circuit board 12 is disposed between the first mounting groove 1131 and the accommodating cavity, so as to facilitate the plugging and matching between the first interface 122 on the connection circuit board 12 and the fourth interface of the transformer assembly 13, and facilitate the plugging and matching between the third interface 121 on the connection circuit board 12 and the fifth interface 21 of the intelligent control module 20.

Further, the housing 11 is provided with a first routing hole 1112 (see fig. 5) that is communicated with the accommodating cavity, and the first routing hole 1112 is used for allowing the connection bus to pass through, so that one end of the connection bus is electrically connected with the temperature acquisition circuit board 14, and the other end of the connection bus passes through the first routing hole 1112 to reach the accommodating cavity and is electrically connected with the connection circuit board 12, that is, the space in the accommodating cavity is fully utilized for routing wires.

Further, the first interface 122 is located on a side of the connection circuit board 12 facing the accommodating chamber. In particular to the embodiment shown in fig. 2, the first interface 122 is located on the underside of the connection circuit board 12 to facilitate a direct plug-in mating of the first interface 122 with the fourth interface of the transformer assembly 13.

Further, the third interface 121 is located on a side of the connection circuit board 12 facing the first mounting groove 1131, and specifically, in the embodiment shown in fig. 2, the third interface 121 is located on an upper side of the connection circuit board 12, so that when the intelligent control module 20 is inserted into the first mounting groove 1131, the fifth interface 21 on the intelligent control module 20 can be directly plugged and matched with the third interface 121.

Further, the first mounting groove 1131 is located at the top of the breaker body 10, and the temperature acquisition circuit board 14 is disposed at the bottom of the breaker body 10. The accommodating cavity is located at one side of the first mounting groove 1131 close to the temperature acquisition circuit board 14. The first routing hole 1112 penetrates from the accommodating cavity to the bottom of the housing 11. In this way, the connection bus penetrates into the accommodating cavity from the bottom of the housing 11 directly through the first routing hole 1112, and then passes through the accommodating cavity to be electrically connected with the connection circuit board 12. On the one hand, the wiring distance of the connecting bus is short, and the length of the connecting bus is shortened as much as possible; on the other hand, the wiring of the connecting bus can not cause adverse effect on other parts outside the accommodating cavity.

Further, the transformer assembly 13 includes a housing 133 (see fig. 6), a transformer 131 and a signal circuit board 132 both provided on the housing 133. The transformer 131 is electrically connected to the signal circuit board 132, and the fourth interface is located on the signal circuit board 132, that is, the electrical connection between the connection circuit board 12 and the signal circuit board 132 is achieved by plugging and matching the first interface 122 on the connection circuit board 12 with the fourth interface on the signal circuit board 132. The housing 133 has a second routing hole 1331 (see fig. 6) through which a connection bus is passed, one end of the connection bus is electrically connected to the temperature acquisition circuit board 14, and the other end of the connection bus sequentially passes through the first routing hole 1112, the accommodating cavity, and the second routing hole 1331 and is electrically connected to the connection circuit board 12.

In particular embodiments, the housing 11 includes a base 111, a middle cover 113, and a top cover 115. A middle cover 113 is provided on top of the base 111, and a top cover 115 is provided on top of the middle cover 113. The first mounting groove 1131 is formed on the middle cover 113, the accommodating cavity is formed on the base 111, and the temperature acquisition circuit board 14 is disposed at the bottom of the base 111.

As shown in fig. 5, further, the housing 11 further includes a bottom cover 117, and the bottom cover 117 is disposed at the bottom of the base 111 to cover the temperature acquisition circuit board 14, so that the bottom cover 117 can protect the temperature acquisition circuit board 14.

Referring to fig. 2 to 4, in the embodiment of the present application, the circuit breaker further includes a first accessory function module 42 mounted on the housing 11. The first accessory function module 42 has a seventh interface 421, and the intelligent control module 20 further has a ninth interface 22 in plug-in fit with the seventh interface 421, so as to realize that the intelligent control module 20 is electrically connected with the first accessory function module 42, and further enable data and/or signals to be transferred between the intelligent control module 20 and the first accessory function module 42.

Alternatively, the first accessory function module 42 may be a communication module, where the communication module can implement communication connection between the intelligent control module 20 and the cloud, so as to implement remote control on the circuit breaker. Of course, in other embodiments, the first accessory function module 42 may be a module having other functions, which is not limited herein.

In particular to the embodiment, the circuit breaker body 10 further includes a transit circuit board 41 disposed on the housing 11. The switching circuit board 41 is electrically connected to the first accessory function module 42 and has a sixth interface 411.

The circuit breaker further comprises a second accessory function module 30 removably mounted on the housing 11. The second accessory function module 30 has an eighth interface 31 that is a plug-in fit with the sixth interface 411. In this way, the eighth interface 31 on the second accessory function module 30 is in plug-in fit with the sixth interface 411 on the switching circuit board 41, so that the second accessory function module 30 is electrically connected with the intelligent control module 20 through the switching circuit board 41 and the first accessory function module 42, and further, data and/or signals are transferred between the second accessory function module 30 and the intelligent control module 20.

Further, the first accessory function module 42 also has an eleventh interface 423. The interposer circuit board 41 also has a tenth interface 413. The eleventh interface 423 is in plug-in engagement with the tenth interface 413, so that the first accessory function module 42 is electrically connected to the switching circuit board 41.

Optionally, the second accessory function module 30 may be a communication module, where the communication module can implement communication connection between the intelligent control module 20 and the cloud, so as to implement remote control on the circuit breaker. Of course, in other embodiments, the second accessory function module 30 may be a module having other functions, which is not limited herein.

In the embodiment of the present application, the housing 11 has a second mounting groove 1151 (see fig. 4), and the second accessory function module 30 is removably mounted in the second mounting groove 1151. In this way, when the electronic components in the second accessory function module 30 are damaged or the service life expires, the second accessory module 30 can be pulled out from the second installation groove 1151, and a new second accessory function module 30 can be reinserted into the second installation groove 1151, so that the whole circuit breaker is not required to be scrapped, and the waste of resources is avoided. Specifically, the second mounting groove 1151 is provided on the top cover 115.

Further, at least a region of the transit circuit board 41 having the sixth interface 411 is exposed to the second mounting groove 1151, so that when the second accessory function module 30 is inserted into the second mounting groove 1151, the eighth interface 31 on the second accessory function module 30 can be directly inserted into the sixth interface 411 on the transit circuit board 41, thereby achieving the electrical connection of the second accessory function module 30 with the transit circuit board 41. Thus, when the second accessory function module 30 needs to be mounted, the second accessory function module 30 is inserted into the second mounting groove 1151, and at this time, the eighth interface 31 on the second accessory function module 30 is in plug-in fit with the sixth interface 411 on the switching circuit board 41. When the second accessory function module 30 needs to be detached, the second accessory function module 30 is pulled out of the second mounting groove 1151, and at this time, the eighth interface 31 on the second accessory function module 30 is separated from the sixth interface 411 on the switch circuit board 41.

Similarly, at least the region of the first accessory function module 42 having the seventh interface 421 is exposed in the first mounting groove 1131, so that when the intelligent control module 20 is inserted into the first mounting groove 1131, the ninth interface 22 on the intelligent control module 20 can be directly inserted into the seventh interface 421 on the first accessory function module 42, thereby achieving the electrical connection of the intelligent control module 20 and the first accessory function module 42. Thus, when the intelligent control module 20 needs to be installed, the intelligent control module 20 is inserted into the first installation groove 1131, and at this time, the fifth interface 21 on the intelligent control module 20 is in plug-in fit with the third interface 121 on the connection circuit board 12, and the ninth interface 22 on the intelligent control module 20 is in plug-in fit with the seventh interface 421 on the first accessory function module 42.

Referring to fig. 1 and 4, in an embodiment, the circuit breaker main body 10 further includes a cover plate 50, one end of the cover plate 50 has a clamping portion 51, and the other end of the cover plate 50 has a locking portion 52. The housing 11 further has a locking groove 1153 formed therein on one side of the second mounting groove 1151. The clamping portion 51 of the cover plate 50 can be clamped in the clamping groove 1153, and the locking portion 52 of the cover plate 50 can be locked and fixed on the housing 11 through the threaded locking member, so that the second accessory function module 30 is sealed in the second mounting groove 1151, and the protection function for the second accessory function module 30 is achieved. Thus, when the second accessory function module 30 is mounted, the second accessory function module 30 is first inserted into the second mounting groove 1151, so that the eighth interface 31 on the second accessory function module 30 is inserted into the sixth interface 411 on the switch circuit board 41; then, aligning the clamping part 51 on the cover plate 50 with the clamping groove 1153 on the shell 11, and inserting the clamping part 51 into the clamping groove 1153; finally, the locking portion 52 of the cover plate 50 is locked and fixed to the housing 11 by the screw locking member, i.e., the cover plate 50 is fixed with respect to the housing 11. When the second accessory functional module 30 needs to be disassembled, firstly, the threaded fastener is unscrewed, and then the clamping part 51 of the cover plate 50 is pulled out of the clamping groove 1153, so that the cover plate 50 is separated from the shell 11; the second accessory function module 30 is then pulled out of the second mounting groove 1151. Alternatively, the threaded fastener may be a screw.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A circuit breaker, comprising:

the circuit breaker main body (10) comprises a shell (11), and a connecting circuit board (12), a temperature acquisition circuit board (14) and a connecting bus which are all arranged on the shell (11); the connection circuit board (12) has a third interface (121); a kind of electronic device with high-pressure air-conditioning system

The intelligent control module (20) is arranged on the shell (11) and is provided with a fifth interface (21) which is in plug-in fit or fixed electric connection fit with the third interface (121);

the circuit board (14) is provided with a wire inlet temperature sensor group for detecting the temperature of each phase of wire inlet of the circuit breaker and a wire outlet temperature sensor group for detecting the temperature of each phase of wire outlet of the circuit breaker, and the connecting bus comprises a wire inlet bus for electrically connecting the wire inlet temperature sensor group with the connecting circuit board (12) and a wire outlet bus for electrically connecting the wire outlet temperature sensor group with the connecting circuit board (12).

2. The circuit breaker according to claim 1, wherein the incoming line temperature sensor group comprises three incoming line temperature sensors, the three incoming line temperature sensors being respectively used for temperature measurement of a three-phase incoming line of the circuit breaker;

the outgoing line temperature sensor group comprises three outgoing line temperature sensors, and the three outgoing line temperature sensors are respectively used for measuring the temperature of the three-phase outgoing line of the circuit breaker.

3. Circuit breaker according to claim 1, characterized in that a memory module is provided on the connection circuit board (12), which memory module is used for storing data of the circuit breaker.

4. The circuit breaker according to claim 1, wherein the housing (11) has a first mounting slot (1131) thereon, and the intelligent control module (20) is removably mounted in the first mounting slot (1131);

at least a region of the connection circuit board (12) having the third interface (121) is exposed to the bottom of the first mounting groove (1131).

5. The circuit breaker according to claim 4, characterized in that the housing (11) has a housing cavity inside adjacent to the first mounting groove (1131), the connection circuit board (12) being arranged between the first mounting groove (1131) and the housing cavity, the circuit breaker further comprising a transformer assembly (13) arranged inside the housing cavity; the connecting circuit board (12) also has a first interface (122), and the transformer assembly (13) has a fourth interface which is in plug-in fit with the first interface (122);

the shell (11) is provided with a first wiring hole (1112) communicated with the accommodating cavity, and the first wiring hole (1112) is used for the connection bus to pass through.

6. The circuit breaker according to claim 5, characterized in that the first interface (122) is located on the side of the connection circuit board (12) facing the housing chamber; the third interface (121) is located on a side of the connection circuit board (12) facing the first mounting groove (1131).

7. The circuit breaker according to claim 5, characterized in that the first mounting groove (1131) is located at the top of the circuit breaker body (10), the temperature acquisition circuit board (14) is disposed at the bottom of the circuit breaker body (10), the accommodation cavity is located at a side of the first mounting groove (1131) close to the temperature acquisition circuit board (14), and the first routing hole (1112) is penetrated to the bottom of the housing (11) by the accommodation cavity.

8. The circuit breaker according to claim 5, characterized in that the transformer assembly (13) comprises a housing (133) and a transformer (131) and a signal circuit board (132) both provided on the housing (133); the mutual inductor (131) is electrically connected with the signal circuit board (132), and the fourth interface is positioned on the signal circuit board (132);

the housing (133) has a second routing hole (1331) through which the connection bus passes.

9. Circuit breaker according to any of claims 1 to 8, characterized in that it further comprises a first accessory function module (42) mounted on the housing (11);

the first accessory function module (42) is provided with a seventh interface (421), and the intelligent control module (20) is also provided with a ninth interface (22) which is in plug-in fit with the seventh interface (421).

10. The circuit breaker according to claim 9, characterized in that the circuit breaker body (10) further comprises a transit circuit board (41) provided on the housing (11), the transit circuit board (41) being electrically connected with the first accessory function module (42) and having a sixth interface (411);

the circuit breaker further comprises a second accessory function module (30) detachably mounted on the housing (11), the second accessory function module (30) having an eighth interface (31) in plug-in engagement with the sixth interface (411).