Circuit breaker

Abstract

The utility model relates to a circuit breaker, which comprises an electricity-taking circuit board and a temperature detection mechanism, and is characterized in that the temperature detection mechanism is arranged on the electricity-taking circuit board and is used for detecting the inlet wire temperature and the outlet wire temperature of the circuit breaker; the power taking circuit board and the control module are electrically connected with the switching circuit board through respective terminals, and the power taking circuit board transmits signals to the control module through the switching circuit board; the current transformer is electrically connected with the switching circuit board and transmits signals to the control module through the switching circuit board; the accessory circuit board is electrically connected with the control module through respective terminals, and the accessory function module is in one-to-one correspondence with the accessory circuit board and is electrically connected with the accessory circuit board through respective terminals. The accessory function module transmits signals to the control module through the accessory circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker. Background Art

[0002] A circuit breaker is a switching device that can close, carry and interrupt current under normal circuit conditions and can close, carry and interrupt current under abnormal circuit conditions within a specified time.

[0003] The circuit boards in the circuit breaker are connected to each other through leads. When the circuit boards are connected through leads, there are often problems such as the inability to control the consistency of the process when arranging the leads and difficulties in wiring (assembly). At the same time, during the use of the circuit breaker connected by leads, the wear of the leads or the short circuit between the leads will cause safety hazards, which will lead to safety accidents. Utility Model Content

[0004] Based on this, it is necessary to provide a circuit breaker to address the above problems. The circuit board of the circuit breaker adopts lead-free connection, which can solve the problems of uncontrollable process consistency, difficulty in wiring, and safety hazards caused by lead wear or short circuit between leads.

[0005] A circuit breaker, comprising:

[0006] A power circuit board and a temperature detection mechanism, wherein the temperature detection mechanism is arranged on the power circuit board and is used to detect the incoming line temperature and the outgoing line temperature of the circuit breaker;

[0007] A switching circuit board and a control module, wherein the power circuit board and the control module are electrically connected to the switching circuit board through their respective terminals, and the power circuit board transmits signals to the control module through the switching circuit board;

[0008] A current transformer, electrically connected to the switching circuit board, and transmitting a signal to the control module through the switching circuit board;

[0009] At least one accessory circuit board and at least one accessory functional module, the accessory circuit board is electrically connected to the control module through their respective terminals, the accessory functional module corresponds to the accessory circuit board one by one and is electrically connected through their respective terminals, and the accessory functional module transmits a signal to the control module through the accessory circuit board.

[0010] In the above-mentioned circuit breaker, electrical connections are achieved between circuit boards, between the circuit board and the control module, and between the accessory circuit board and the accessory functional module through terminals. Compared with the method of using leads to achieve electrical connection between structures in the prior art, the layout of the leads is reduced, the consistency of the process is ensured, the installation is convenient, and the probability of safety accidents caused by lead wear or lead short circuit is reduced.

[0011] In one embodiment, in the first direction, the temperature detection mechanism and the switching circuit board are arranged on the same side of the power taking circuit board;

[0012] The adapter circuit board is plugged into one end of the power circuit board in the second direction and extends along the first direction; the control module is arranged on a side of the adapter circuit board away from the power circuit board in the first direction, one end of the accessory circuit board is connected to the control module, and the other end extends away from the control module in the second direction, and the accessory function module is arranged on a side of the accessory circuit board away from the power circuit board in the first direction;

[0013] The first direction intersects the second direction.

[0014] In one embodiment, the power-taking circuit board has two first terminals arranged at intervals; the switching circuit board has two second terminals arranged at intervals, and the first terminals are plugged in one-to-one with the second terminals.

[0015] In one embodiment, two of the first terminals are arranged at intervals along a third direction, and two of the second terminals are arranged at intervals along the third direction and are opposite to the first terminals one by one.

[0016] In one embodiment, the transfer circuit board further includes a circuit board body, and the two second terminals are both connected to the circuit board body;

[0017] The circuit breaker further comprises a bracket, the circuit board body is mounted on the bracket, the bracket has two plug-in slots, and the two second terminals are plugged into the plug-in slots one by one;

[0018] The bracket is also provided with a mounting groove, and the current transformer is installed in the mounting groove.

[0019] In one embodiment, the bracket forms a mounting groove at one end close to the power circuit board in the first direction, and the circuit board body is mounted at one end of the bracket away from the mounting groove in the first direction;

[0020] The two plug-in slots are arranged at intervals in the third direction and extend along the first direction, and the two second terminals are respectively connected to two ends of the circuit board body in the third direction and are respectively plugged into the corresponding plug-in slots;

[0021] The first direction intersects the third direction.

[0022] In one of the embodiments, the switching circuit board has two third terminals that are spaced apart from each other, and the two third terminals are used for plugging with the control module.

[0023] In one embodiment, the transfer circuit board further includes a circuit board body, the circuit board body includes a first sub-board and a second sub-board which are separately arranged, the two second terminals are connected to the first sub-board, and the second sub-board is arranged on a side of the first sub-board away from the plug-in board;

[0024] The first sub-board and the second sub-board have two fourth terminals and a fifth terminal on one side facing each other, and the fourth terminals are plugged in one-to-one with the fifth terminals;

[0025] The second sub-board is plugged into the control module and has a storage module for storing data of the circuit breaker.

[0026] In one embodiment, the circuit breaker includes a first accessory circuit board and a second accessory circuit board, and the first accessory circuit board and the second accessory circuit board are both plugged into the control module;

[0027] The accessory functional modules plugged into the first accessory circuit board and the second accessory circuit board are respectively a carrier module and a shunt trip module.

[0028] In one embodiment, the adapter circuit board has a sixth terminal, at least one of the accessory circuit boards has a seventh terminal, and the sixth terminal is plugged into the seventh terminal;.

[0029] In one embodiment, at least one of the accessory circuit boards has an eighth terminal, a ninth terminal and a tenth terminal, the eighth terminal is plugged into the accessory function module to transmit a signal to the accessory function module, the ninth terminal is plugged into the accessory function module, the tenth terminal is plugged into the control module, and the accessory function module transmits a signal to the control module via the ninth terminal and the tenth terminal.

[0030] In one embodiment, at least one of the accessory circuit boards includes a third sub-board and a fourth sub-board which are separately arranged, the third sub-board is provided with two eleventh terminals, the fourth sub-board is provided with two twelfth terminals, and the eleventh terminal is electrically connected to the twelfth terminal in a one-to-one correspondence;

[0031] The seventh terminal and the tenth terminal are disposed on the third sub-board, and the eighth terminal and the ninth terminal are disposed on the fourth sub-board.

[0032] In one embodiment, at least one of the accessory circuit boards includes a third sub-board and a fourth sub-board that are separately arranged, the third sub-board is plugged into the adapter circuit board and the control module, and the fourth sub-board is plugged into the third sub-board and the accessory function module. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A structural diagram of a circuit breaker provided in one embodiment of the present application;

[0034] Figure 2 for Figure 1 An exploded view of a portion of the circuit breaker shown in FIG.

[0035] Figure 3 for Figure 1 The structural diagram of the power supply circuit board of the circuit breaker shown in ;

[0036] Figure 4 for Figure 1 The schematic diagram of the installation of each circuit board of the circuit breaker shown in FIG.

[0037] Figure 5 for Figure 4 An exploded view of the structure shown in;

[0038] Figure 6 for Figure 4 An exploded view of a portion of the structure shown in ;

[0039] Figure 7 for Figure 1 A structural diagram of a bracket of a circuit breaker shown in;

[0040] Figure 8 for Figure 1 An assembly drawing of a transfer circuit board, a current transformer, a wiring assembly and a bracket of a circuit breaker shown in FIG.

[0041] Fig. 9 for Figure 1 The assembly diagram of the power taking circuit board and the transfer circuit board of the circuit breaker shown in ;

[0042] Fig.10 for Figure 1 An assembly diagram of a power circuit board, a transfer circuit board, and an accessory circuit board as shown in ;

[0043] Fig.11 for Fig. 9 The partial structural diagram shown in (omitting the second sub-board);

[0044] Fig.12 for Figure 4 Another exploded view of the structure shown in .

[0045] Description of reference numerals:

[0046] 100, circuit breaker; 10, power circuit board; 11, power hole; 12, first terminal; 20, temperature sensor; 30, static contact; 40, moving contact; 50, transfer circuit board; 51, second terminal; 52, circuit board body; 53, third terminal; 54, first sub-board; 55, second sub-board; 56, fourth terminal; 57, fifth terminal; 58, sixth terminal; 59, grounding terminal; 60, current transformer; 61, current transformer for measurement; 62, current transformer for protection; 70, control module; 80a, first attachment Component circuit board; 80b, second accessory circuit board; 81, seventh terminal; 82, eighth terminal; 83, ninth terminal; 84, tenth terminal; 85, third sub-board; 86, fourth sub-board; 87, eleventh terminal; 88, twelfth terminal; 89, thirteenth terminal; 90a, carrier module; 90b, shunt trip module; 110, bracket; 111, plug-in slot; 112, mounting slot; 113, bracket body; 114, plug-in part; 115, transformer isolation plate; 116, limit column; 120, base; 130, wiring member. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0053] See also Figure 1 and Figure 2 An embodiment of the present application provides a circuit breaker 100, including a power circuit board 10 and a temperature detection mechanism. The power circuit board 10 is used to draw power, and the temperature detection mechanism is arranged on the power circuit board 10 to detect the incoming line temperature and the outgoing line temperature of the circuit breaker 100.

[0054] Optionally, the power circuit board 10 has a power supply unit, which can be electrically connected to the static contact 30 of the circuit breaker 100 to supply power. Figure 3 , the power taking part is a power taking hole 11, and the circuit breaker 100 also includes a conductive column, which is inserted into the power taking hole 11 and electrically connected to the static contact 30 so that the power taking circuit board 10 can take power. Specifically, there are three power taking holes 11, and the three power taking holes 11 are all penetrated by conductive columns. The three power taking holes 11 are used to obtain A-phase electricity, B-phase electricity and C-phase electricity respectively. In order to obtain the three-phase incoming line temperature and the three-phase outgoing line temperature of the circuit breaker 100, the temperature detection mechanism includes three temperature sensors 20 for detecting the incoming line temperature and three temperature sensors 20 for detecting the outgoing line temperature.

[0055] Generally, continue to see Figure 2 and Figure 3 , the temperature detection mechanism obtains the incoming line temperature of the circuit breaker 100 by detecting the temperature of the static contact 30, and obtains the outgoing line temperature of the circuit breaker 100 by detecting the temperature of the moving contact 40 or the wiring member 130 (described below). It can be seen that the temperature detection mechanism is arranged on the side of the power circuit board 10 facing the static contact 30 and the moving contact 40. Specifically, in the first direction, the temperature detection mechanism is arranged on the side of the power circuit board 10 facing the static contact 30 and the moving contact 40. In some specific embodiments, the circuit breaker 100 is a rectangular parallelepiped structure or a quasi-rectangular parallelepiped structure, and the first direction is the height direction of the circuit breaker 100. Figure 1 The Z direction is the first direction.

[0056] See also Figure 2 and Figure 4 , the circuit breaker 100 also includes a switching circuit board 50, a current transformer 60 and a control module 70. The power circuit board 10 and the switching circuit board 50 are electrically connected through their respective terminals, and the control module 70 and the switching circuit board 50 are electrically connected through their respective terminals. The power circuit board 10 transmits a signal to the control module 70 through the switching circuit board 50. Specifically, the power circuit board 10 transmits a power signal and a data signal to the control module 70 through the switching circuit board 50, so that the control module 70 is powered and obtains the data signal of the power circuit board 10. Specifically, the data signal transmitted from the power circuit board 10 to the control module 70 through the switching circuit board 50 is a temperature signal. Of course, in some other embodiments, the power circuit board 10 only transmits a power signal to the control module 70 through the switching circuit board 50, which is not limited here.

[0057] The current transformer 60 is electrically connected to the switching circuit board 50 and transmits a signal to the control module 70 through the switching circuit board 50. Specifically, the data signal transmitted from the current transformer 60 to the control module 70 through the switching circuit board 50 is a current signal.

[0058] The circuit breaker 100 further includes at least one accessory circuit board and at least one accessory function module. The accessory circuit board is electrically connected to the control module 70 through respective terminals. The accessory function module corresponds to the accessory circuit board one by one and is electrically connected through respective terminals. The accessory function module transmits a signal to the control module 70 through the accessory circuit board. Specifically, the accessory function module transmits a data signal to the control module 70 through the accessory circuit board.

[0059] The data signal transmitted from the accessory functional module to the control module 70 varies depending on the type of functional module. Figure 4 The circuit breaker 100 includes a first accessory circuit board 80a and a second accessory circuit board 80b. The first accessory circuit board 80a and the second accessory circuit board 80b are both electrically connected to the control module 70. The accessory functional modules electrically connected to the first accessory circuit board 80a and the second accessory circuit board 80b are respectively a carrier module 90a and a shunt trip module 90b. The carrier module 90a can transmit a communication signal to the control module 70, and the shunt trip module 90b can transmit a shunt trip signal to the control module 70.

[0060] Specifically, the two components are electrically connected by plugging and fitting their respective terminals to facilitate installation. It is conceivable that in some other embodiments, the two components can also be electrically connected by welding their respective terminals, which is not limited here.

[0061] In the circuit breaker 100 of the present application, the circuit boards, the circuit board and the control module 70, and the accessory circuit board and the accessory functional module are all electrically connected through terminals. Compared with the method of using leads to achieve electrical connection between structures in the prior art, the layout of the leads is reduced, the consistency of the process is ensured, the installation is convenient, and the probability of safety accidents caused by lead wear or lead short circuit is reduced.

[0062] In some embodiments, see Figure 4-Figure 6, in the first direction, the adapter circuit board 50 and the temperature detection mechanism are arranged on the same side of the power circuit board 10. The adapter circuit board 50 is plugged into the power circuit board 10 at one end in the second direction and extends along the first direction. The control module 70 is arranged on the side of the adapter circuit board 50 away from the power circuit board 10 in the first direction. One end of the accessory circuit board is connected to the control module 70, and the other end extends away from the control module 70 along the second direction. Specifically, one end of the accessory circuit board is connected to the control module 70, and the other end extends away from the control module 70 along the second direction to the other end of the power circuit board 10. The accessory function module is arranged on the side of the accessory circuit board away from the power circuit board 10 in the first direction. The first direction intersects with the second direction. Specifically, the first direction is perpendicular to the second direction. In some specific embodiments, when the circuit breaker 100 is a rectangular parallelepiped structure, the second direction is the length direction of the circuit breaker 100. Figure 1 and Figure 4 The X direction is the second direction.

[0063] Because the power circuit board 10, the switching circuit board 50 and the control module 70 are stacked in sequence in the first direction, the control module 70 and the accessory circuit board are arranged in the second direction, and the accessory functional module and the accessory circuit board are stacked in the first direction, this ensures that the structure of the circuit breaker 100 is relatively compact and can reduce the volume of the circuit breaker 100.

[0064] It can be understood that in other embodiments, the above structures can also adopt other layout methods, which are not limited here.

[0065] In some embodiments, see Figure 3 and Figure 5 The power circuit board 10 has two first terminals 12 arranged at intervals, and the adapter circuit board 50 has two second terminals 51 arranged at intervals, and the first terminals 12 and the second terminals 51 are plugged in one by one. One of the corresponding first terminals 12 and the second terminal 51 is used to transmit power signals, and the other corresponding first terminal 12 and the second terminal 51 is used to transmit data signals. In this way, the power signal and the data signal of the power circuit board 10 are transmitted to the adapter circuit board 50 in separate paths without interfering with each other.

[0066] Optionally, the two first terminals 12 are arranged at intervals in the third direction, and the two second terminals 51 are also arranged at intervals in the third direction, so that the second terminals 51 are in contact and conduction with the first terminals 12 in a one-to-one correspondence. The first direction, the second direction, and the third direction intersect each other. Specifically, the first direction, the second direction, and the third direction are perpendicular to each other. In some specific embodiments, when the circuit breaker 100 is a rectangular parallelepiped structure, the third direction is the width direction of the circuit breaker 100. Figure 1 and Figure 4In this way, compared with the case where the two first terminals 12 are arranged in other directions, such as the second direction, the size of the power circuit board 10 and the switching circuit board 50 in other directions can be reduced, thereby making the layout of the circuit breaker 100 compact and reasonable.

[0067] Furthermore, the transfer circuit board 50 includes a circuit board body 52, and the two second terminals 51 are both connected to the circuit board body 52. Figure 4 , and see Figure 7 The circuit breaker 100 further includes a bracket 110, on which the circuit board body 52 is mounted. The bracket 110 has two insertion slots 111, and the two second terminals 51 are inserted into the insertion slots 111 one by one. The bracket 110 is also provided with an installation slot 112, in which the current transformer 60 is installed. Figure 1 and Figure 2 The circuit breaker 100 further includes a base 120, on which the power circuit board 10 and the bracket 110 are mounted. The bracket 110 supports the switching circuit board 50 and the control module 70, and the bracket 110 can also accommodate the current transformer 60 to facilitate the assembly of the current transformer 60. The current transformer 60, the switching circuit board 50 and the control module 70 are all centrally mounted on the bracket 110, that is, the bracket 110 integrates large current collection and transmission, occupies a small space, and thus reduces the volume of the circuit breaker 100.

[0068] Optionally, continue to Figure 6 and Figure 7 , the bracket 110 forms a mounting groove 112 at one end close to the power circuit board 10 in the first direction, and the circuit board body 52 is installed at one end of the bracket 110 away from the mounting groove 112 in the first direction. The two plug-in slots 111 are arranged at intervals in the third direction and extend along the first direction. The two second terminals 51 are respectively connected to the two ends of the circuit board body 52 in the third direction, and are respectively plugged into the corresponding plug-in slots 111. In this way, when installing, it is only necessary to install the current transformer 60 in the mounting groove 112 of the bracket 110, install the adapter circuit board 50 to the side of the bracket 110 away from the mounting groove 112 in the first direction, and plug its second terminal 51 into the plug-in slot 111, which is convenient for installation. At the same time, the current transformer 60 is installed on the side of the bracket 110 away from the circuit board body 52 in the first direction to avoid interference between the current transformer 60 and the circuit board body 52 during installation.

[0069] Continue reading Figure 7The bracket 110 includes a bracket body 113 and two plug-in parts 114. The two plug-in parts 114 are arranged at intervals along the third direction, one end of each plug-in part 114 is connected to the bracket body 113, and the other end extends away from the bracket body 113 along the second direction. The mounting groove 112 is provided on the bracket body 113, and the shape of the transfer circuit board 50 and the bracket 110 is adapted so that the circuit board body 52 fits the bracket body 113, and the second terminal 51 is plugged into the plug-in groove 111 of the plug-in part 114.

[0070] Since one end of the plug-in portion 114 is connected to the bracket body 113, and the other end extends away from the bracket body 113 along the second direction, and the adapter circuit board 50 is conformally adapted to the bracket 110, after the second terminal 51 is inserted into the plug-in slot 111, the second terminal 51 and the current transformer 60 are offset in the first direction, so that the second terminal 51 can be connected to the power circuit board 10.

[0071] It is understandable that in other embodiments, the bracket 110 may be arranged in other ways, as long as the arrangement method for installing the current transformer 60 and the adapter circuit board 50 can be achieved.

[0072] At least two mounting grooves 112 are provided on the bracket body 113, and the mounting grooves 112 are arranged in sequence along the third direction. There are at least two current transformers 60, and they are installed in the mounting grooves 112 one by one. In this way, multiple current transformers 60 cooperate with each other to detect the current in the circuit breaker 100, and each current transformer 60 is installed in the corresponding mounting groove 112 without affecting each other.

[0073] Continue reading Figure 4 Each current transformer 60 includes a metering current transformer 61 and a protective current transformer 62. The metering current transformer 61 provides the control module 70 with the current information of the power grid within the normal working current range; the protective current transformer 62 provides the control module 70 with the power grid fault current information of the power grid under the power grid fault state.

[0074] The metering current transformer 61 and the protective current transformer 62 can be connected to the circuit board body 52 through leads. In some specific embodiments, the metering current transformer 61 and the protective current transformer 62 can be electrically connected to the transfer circuit board 50 through a flexible wire or directly contacted with the transfer circuit board 50.

[0075] The circuit breaker 100 further includes a wiring member 130, which extends along the second direction and is inserted into the current transformer 60. The bracket body 113 has a transformer isolation plate 115, which abuts against the surface of the wiring member 130 facing the circuit board body 52 to isolate the arc. By providing the wiring member 130, the circuit breaker 100 can be connected to an external power source; at the same time, the wiring member 130 can cooperate with the transformer isolation plate 115 to isolate the arc in the circuit breaker 100.

[0076] See also Figure 8 , the circuit board body 52 has two third terminals 53 spaced apart on one side away from the bracket 110 in the first direction, and the two third terminals 53 are used to be plugged into the control module 70. Among them, one of the two third terminals 53 is used to transmit the power signal, and the other is used to transmit the data signal. In this way, after the power circuit board 10 takes power, the power signal is transmitted to the control module 70 through a first terminal 12, a second terminal 51, the circuit board body 52 and a third terminal 53, so that the control module 70 is powered; the data signal is transmitted to the control module 70 through another first terminal 12, another second terminal 51, the circuit board body 52 and another third terminal 53, so that the control module 70 obtains the data signal of the power circuit board 10.

[0077] participate Fig. 9 The circuit board body 52 includes a first sub-board 54 and a second sub-board 55 which are separately arranged. The first sub-board 54 is attached to the bracket 110. The two second terminals 51 are respectively connected to the two ends of the first sub-board 54 in the third direction. The second sub-board 55 is arranged on the side of the first sub-board 54 away from the bracket 110. Specifically, the first sub-board 54 and the two second terminals 51 are integrally formed. Fig.10 and Fig.11 , two fourth terminals 56 are provided on the side of the first sub-board 54 facing the second sub-board 55, and two fifth terminals 57 are provided on the side of the second sub-board 55 facing the first sub-board 54, and the fourth terminals 56 and the fifth terminals 57 are plugged in one by one. One of the corresponding fourth terminals 56 and the fifth terminals 57 is used to transmit power signals, and the other corresponding fourth terminals 56 and the fifth terminals 57 is used to transmit data signals. Two third terminals 53 are provided on the side of the second sub-board 55 facing away from the first sub-board 54.

[0078] The above arrangement facilitates the processing and manufacturing of the transfer circuit board 50 ; at the same time, the circuit board body 52 is divided into a first sub-board 54 and a second sub-board 55 , and a storage module can also be provided on the second sub-board 55 to store data of the circuit breaker 100 .

[0079] Of course, in some other embodiments, the transfer circuit board 50 may also be an integrated structure, which is not limited here.

[0080] Continue reading Figure 8 The bracket body 113 is provided with a limiting column 116 along the first direction, and the limiting column 116 is passed through the first sub-board 54 and the second sub-board 55. The circuit breaker 100 also includes a fixing member, which is passed through the bracket 110 to fix the first sub-board 54 with the bracket body 113, and the fixing member is passed through the limiting column 116 to fix the second sub-board 55 with the limiting column 116. In this way, the transfer circuit board 50 is fixed on the bracket body 113 to prevent the transfer circuit board 50 from shifting. Optionally, the fixing member is a fixing screw.

[0081] Furthermore, the bracket body 113 is provided with a plurality of limiting posts 116, specifically four, the four limiting posts 116 are arranged to form a rectangle, and all the limiting posts 116 are passed through the first sub-plate 54 and the second sub-plate 55, so as to ensure the limiting effect on the first sub-plate 54 and the second sub-plate 55. It can be understood that in some other embodiments, the number of limiting posts 116 is not limited, such as the limiting posts 116 can also be one, two, three or more than four.

[0082] In some embodiments, continue to refer to Figure 4 , one end of the first accessory circuit board 80a and the second accessory circuit board 80b are respectively plugged with the two ends of the control module 70 in the third direction, and the other ends of the first accessory circuit board 80a and the second accessory circuit board 80b extend away from the control module 70 in the second direction toward the other end of the power circuit board 10. In this way, the first accessory circuit board 80a and the second accessory circuit board 80b are far apart in the third direction and will not interfere with each other; at the same time, the other ends of the first accessory circuit board 80a and the second accessory circuit board 80b away from the control module 70 in the second direction are arranged close to the end of the power circuit board 10 that is not connected to the transfer circuit board 50, and the other end of the accessory connection board extends toward the end away from the power circuit board 10, so that the structure layout is compact and the space can be reasonably used.

[0083] Further reading Fig.10 , the circuit board body 52 is provided with a sixth terminal 58, and at least one accessory circuit board has a seventh terminal 81, and the sixth terminal 58 is plugged with the seventh terminal 81. The sixth terminal 58 and the seventh terminal 81 are used to transmit power signals. At this time, the adapter circuit board 50 transmits the power signal to the accessory circuit board through the sixth terminal 58 and the seventh terminal 81, and the accessory circuit board is powered.

[0084] In some embodiments, a grounding terminal 59 is also provided on the circuit board body 52 for grounding the entire circuit.

[0085] Continue reading Figure 5 and Fig.10At least one accessory circuit board has an eighth terminal 82, a ninth terminal 83 and a tenth terminal 84. The eighth terminal 82 is plugged into the accessory function module to transmit a power signal to the accessory function module, the ninth terminal 83 is plugged into the accessory function module, and the tenth terminal 84 is plugged into the control module 70. The accessory function module transmits a signal to the control module 70 through the ninth terminal 83 and the tenth terminal 84.

[0086] See also Fig.12 At least one accessory circuit board includes a third sub-board 85 and a fourth sub-board 86 which are separately arranged. The third sub-board 85 is plugged into the transfer circuit board 50 and the control module 70. The fourth sub-board 86 is plugged into the third sub-board 85 and the accessory function module. Figure 5 and Fig.12 , the third sub-board 85 is provided with two eleventh terminals 87, the fourth sub-board 86 is provided with two twelfth terminals 88, and the eleventh terminal 87 and the twelfth terminal 88 are plugged in one-to-one. The seventh terminal 81 and the tenth terminal 84 are provided on the third sub-board 85, and the eighth terminal 82 and the ninth terminal 83 are provided on the fourth sub-board 86. In this way, the power signal is transmitted to the accessory function module via the sixth terminal 58, the seventh terminal 81, one eleventh terminal 87, one twelfth terminal 88 and the eighth terminal 82, and the data signal of the accessory function module is transmitted to the control module 70 via the ninth terminal 83, another twelfth terminal 88, another eleventh terminal 87 and the tenth terminal 84.

[0087] The accessory circuit board is configured as a separate third sub-board 85 and a fourth sub-board 86, which is convenient for processing and manufacturing the accessory circuit board, and convenient for plugging the accessory functional module with the control module 70 through the accessory circuit board.

[0088] It is conceivable that in some other embodiments, the accessory circuit board can also be powered directly through the control module 70. Figure 6 If at least one accessory circuit board is provided with a thirteenth terminal 89, the accessory circuit board is plugged into the control module 70 via the thirteenth terminal 89, and the accessory functional module plugged into the accessory circuit board draws power from the control module 70 via the thirteenth terminal 89 and transmits data signals to the control module 70.

[0089] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A circuit breaker, characterized in that: include: A power circuit board (10) and a temperature detection mechanism, wherein the temperature detection mechanism is arranged on the power circuit board (10) and is used to detect the incoming line temperature and the outgoing line temperature of the circuit breaker; A switching circuit board (50) and a control module (70), wherein the power circuit board (10) and the control module (70) are electrically connected to the switching circuit board (50) through respective terminals, and the power circuit board (10) transmits signals to the control module (70) through the switching circuit board (50); A current transformer (60) is electrically connected to the switching circuit board (50) and transmits a signal to the control module (70) through the switching circuit board (50); At least one accessory circuit board and at least one accessory functional module, the accessory circuit board and the control module (70) are electrically connected through their respective terminals, the accessory functional module corresponds to the accessory circuit board one by one and is electrically connected through their respective terminals, and the accessory functional module transmits signals to the control module (70) through the accessory circuit board.

2. The circuit breaker according to claim 1, characterized in that: In a first direction, the temperature detection mechanism and the switching circuit board (50) are arranged on the same side of the power taking circuit board (10); The adapter circuit board (50) is electrically connected to one end of the power circuit board (10) in the second direction and extends along the first direction; the control module (70) is arranged on a side of the adapter circuit board (50) away from the power circuit board (10) in the first direction; one end of the accessory circuit board is connected to the control module (70) and the other end extends away from the control module (70) in the second direction; and the accessory function module is arranged on a side of the accessory circuit board away from the power circuit board (10) in the first direction; The first direction intersects the second direction.

3. The circuit breaker according to claim 1 or 2, characterized in that: The power-taking circuit board (10) has two first terminals (12) arranged at intervals; the switching circuit board (50) has two second terminals (51) arranged at intervals, and the first terminals (12) and the second terminals (51) are electrically connected in a one-to-one correspondence.

4. The circuit breaker according to claim 3, characterized in that: The two first terminals (12) are arranged at intervals along a third direction, and the two second terminals (51) are arranged at intervals along the third direction and are opposite to the first terminals (12) one by one.

5. The circuit breaker according to claim 3, characterized in that: The transfer circuit board (50) further comprises a circuit board body (52), and the two second terminals (51) are both connected to the circuit board body (52); The circuit breaker further comprises a bracket (110), the circuit board body (52) is mounted on the bracket (110), the bracket (110) has two plug-in slots (111), and the two second terminals (51) correspond to the plug-in slots (111) one by one; The bracket (110) is also provided with a mounting groove (112), and the current transformer (60) is mounted in the mounting groove (112).

6. The circuit breaker according to claim 5, characterized in that: An installation groove (112) is formed on one end of the bracket (110) close to the power circuit board (10) in a first direction, and the circuit board body (52) is installed on one end of the bracket (110) away from the installation groove (112) in the first direction; The two plug-in slots (111) are arranged at intervals in the third direction and extend along the first direction; the two second terminals (51) are respectively connected to two ends of the circuit board body (52) in the third direction and are respectively plugged into the corresponding plug-in slots (111); The first direction intersects the third direction.

7. The circuit breaker according to claim 3, characterized in that: The switching circuit board (50) has two third terminals (53) arranged at intervals, and the two third terminals (53) are used to be electrically connected to the control module (70).

8. The circuit breaker according to claim 3, characterized in that: The transfer circuit board (50) further comprises a circuit board body (52), wherein the circuit board body (52) comprises a first sub-board (54) and a second sub-board (55) which are separately arranged, wherein the two second terminals (51) are both connected to the first sub-board (54), and the second sub-board (55) is arranged on a side of the first sub-board (54) away from the power-taking circuit board (10); The first sub-board (54) and the second sub-board (55) have two fourth terminals (56) and a fifth terminal (57) on the sides facing each other, respectively, and the fourth terminals (56) and the fifth terminals (57) are electrically connected in a one-to-one correspondence; The second sub-board (55) is electrically connected to the control module (70) and has a storage module for storing data of the circuit breaker.

9. The circuit breaker according to claim 1, characterized in that: The circuit breaker comprises a first accessory circuit board (80a) and a second accessory circuit board (80b), wherein the first accessory circuit board (80a) and the second accessory circuit board (80b) are both electrically connected to the control module (70); The accessory function modules electrically connected to the first accessory circuit board (80a) and the second accessory circuit board (80b) are respectively a carrier module (90a) and a shunt trip module (90b).

10. The circuit breaker according to claim 1, characterized in that The transfer circuit board (50) has a sixth terminal (58), and at least one of the accessory circuit boards has a seventh terminal (81), and the sixth terminal (58) is electrically connected to the seventh terminal (81).

11. The circuit breaker according to claim 10, characterized in that At least one of the accessory circuit boards has an eighth terminal (82), a ninth terminal (83) and a tenth terminal (84), wherein the eighth terminal (82) is electrically connected to the accessory function module to transmit a signal to the accessory function module, the ninth terminal (83) is electrically connected to the accessory function module, and the tenth terminal (84) is electrically connected to the control module (70), and the accessory function module transmits a signal to the control module (70) via the ninth terminal (83) and the tenth terminal (84).

12. The circuit breaker according to claim 11, characterized in that At least one of the accessory circuit boards comprises a third sub-board (85) and a fourth sub-board (86) which are separately arranged, the third sub-board (85) is provided with two eleventh terminals (87), the fourth sub-board (86) is provided with two twelfth terminals (88), and the eleventh terminal (87) is electrically connected to the twelfth terminal (88) in a one-to-one correspondence; The seventh terminal (81) and the tenth terminal (84) are provided on the third sub-board (85), and the eighth terminal (82) and the ninth terminal (83) are provided on the fourth sub-board (86).

13. The circuit breaker according to claim 1, characterized in that At least one of the accessory circuit boards includes a third sub-board (85) and a fourth sub-board (86) which are separately arranged, the third sub-board (85) is electrically connected to the switching circuit board (50) and the control module (70), and the fourth sub-board (86) is electrically connected to the third sub-board (85) and the accessory function module.

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