Primary and secondary separated circuit breaker

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a primary and secondary separated circuit breaker, which comprises a primary circuit breaker body and a secondary control unit, the primary circuit breaker body comprises a groove formed in the surface of the primary circuit breaker body and at least one connector arranged in the groove; the secondary control unit comprises a secondary control unit body and at least one connector arranged on the outer surface of the secondary control unit body; the groove is used for accommodating the secondary control unit, and the connector in the primary circuit breaker body is detachably connected with the connector in the secondary control unit, so that the primary circuit breaker body is electrically connected with the secondary control unit. According to the scheme, on the premise that normal functions of the primary circuit breaker body are not affected, the secondary control unit with faults can be conveniently and independently replaced, the circuit breaker does not need to be integrally replaced, and therefore the reliability of a power supply system is improved, and the cost of the power supply system is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of circuit breakers, and in particular to a circuit breaker with primary and secondary separation. Background Art

[0002] In related technologies, the primary part of the circuit breaker, which is responsible for circuit opening and closing and basic protection, and the secondary part, which is responsible for parameter setting, data collection, and communication, are deeply integrated.

[0003] The applicant found that since the lifespan of the electronic components in the secondary part is far less than the lifespan of the electrical structure in the primary part, but the failure frequency of the electronic components in the secondary part is higher than the failure frequency of the electrical structure in the primary part, when the secondary part fails, the probability of the primary part failing is low, and the circuit breaker still needs to be replaced as a whole. This not only has a negative impact on the reliability of the power supply system, but also increases the cost of the power supply system. Summary of the Invention

[0004] In order to solve the problems in the related art, an embodiment of the present disclosure provides a circuit breaker with primary and secondary separation.

[0005] In a first aspect, an embodiment of the present disclosure provides a circuit breaker with primary and secondary separation, comprising a primary circuit breaker body and a secondary control unit;

[0006] The primary circuit breaker body includes a groove formed on the surface of the primary circuit breaker body and at least one connector disposed in the groove;

[0007] The secondary control unit includes a secondary control unit body and at least one connector disposed on the outer surface of the secondary control unit body;

[0008] The groove is used to accommodate the secondary control unit, and the connector in the primary circuit breaker body is used to be detachably connected to the connector in the secondary control unit, so that the primary circuit breaker body is electrically connected to the secondary control unit.

[0009] In one embodiment of the present disclosure, the circuit breaker further comprises a groove cover movably connected to the primary circuit breaker body, for closing the groove when the secondary control unit is accommodated in the groove.

[0010] In one embodiment of the present disclosure, the circuit breaker further includes a groove cover locking assembly, which is used to lock the groove cover with the primary circuit breaker body.

[0011] In one embodiment of the present disclosure, the groove cover is made of a transparent material.

[0012] In one embodiment of the present disclosure, the secondary control unit further includes a communication module, the communication module including a communication module body and at least one first communication interface provided on an outer surface of the communication module body;

[0013] The secondary control unit body further includes at least one second communication interface provided on the outer surface of the secondary control unit body;

[0014] The first communication interface is used for detachable connection with the second communication interface, so that the communication module is electrically connected to the secondary control unit body.

[0015] In one embodiment of the present disclosure, the communication module is used to connect with the secondary control unit body, and the combined structure formed by the connection is a rectangular parallelepiped.

[0016] In one embodiment of the present disclosure, the secondary control unit body includes a secondary control unit housing and a power supply board, a main control board, and a display board disposed in the secondary control unit housing;

[0017] The main control board is arranged between the power board and the display board, and the main control board is connected to the power board and the display board respectively.

[0018] In one embodiment of the present disclosure, the second communication interface is connected to the main control board, and the connector in the secondary control unit is connected to the power board.

[0019] In one embodiment of the present disclosure, the main control board is connected to the power board and the display board respectively through insulating isolation columns.

[0020] In one embodiment of the present disclosure, the power board includes an AC / DC conversion circuit, a signal switching circuit, a voltage sampling circuit, and a topology circuit;

[0021] The main control board includes a metering CT sampling circuit, a protection CT sampling circuit, a residual current CT sampling circuit, a ground fault protection CT sampling circuit, a carrier communication circuit, a trip control circuit, a relay control circuit, a 6-channel temperature acquisition circuit, a CT power supply circuit, an opening and closing state detection circuit, and a travel switch state detection circuit;

[0022] The display panel includes a liquid crystal display, indicator lights, buttons, external interfaces, a manual-automatic switching switch and a Bluetooth module.

[0023] According to the technical solution provided by the embodiments of the present disclosure, a primary-secondary separation circuit breaker is provided, comprising a primary circuit breaker body and a secondary control unit; wherein the primary circuit breaker body includes a recess formed on a surface of the primary circuit breaker body and at least one connector disposed in the recess; the secondary control unit includes a secondary control unit body and at least one connector disposed on an outer surface of the secondary control unit body; the recess is used to accommodate the secondary control unit, and the connector in the primary circuit breaker body is used to connect with the connector in the secondary control unit, thereby electrically connecting the primary circuit breaker body and the secondary control unit. When the secondary control unit is not faulty, it can be accommodated in the recess of the primary circuit breaker body, and the secondary control unit and the primary circuit breaker body are detachably connected via their respective connectors, without affecting the functions of the secondary control unit and the primary circuit breaker body; when the secondary control unit fails, it can be removed from the recess of the primary circuit breaker body and the secondary control unit can be disconnected from the primary circuit breaker body, thereby conveniently replacing the faulty secondary control unit separately without affecting the normal function of the primary circuit breaker body, without having to replace the entire circuit breaker, thereby improving the reliability of the power supply system and reducing the cost of the power supply system.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objectives and advantages of the present disclosure will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0026] Figure 1 A schematic structural diagram of a circuit breaker with primary and secondary separation according to an embodiment of the present disclosure is shown.

[0027] Figure 2 A schematic structural diagram of a circuit breaker with primary and secondary separation according to another embodiment of the present disclosure is shown.

[0028] Figure 3 A schematic structural diagram of a circuit breaker with primary and secondary separation according to another embodiment of the present disclosure is shown.

[0029] Figure 4 A schematic structural diagram of a circuit breaker with primary and secondary separation according to yet another embodiment of the present disclosure is shown.

[0030] Figure 5 A schematic structural diagram of a power board, a main control board, and a display board according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0031] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. In addition, for the sake of clarity, parts not related to the description of the exemplary embodiments are omitted in the accompanying drawings.

[0032] In the present disclosure, it should be understood that terms such as "include" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts, or combinations thereof disclosed in the present specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, actions, components, parts, or combinations thereof exist or are added.

[0033] It should also be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] In this disclosure, if it involves operations of obtaining user information or user data or displaying user information or user data to others, such operations are all authorized and confirmed by the user, or actively selected by the user.

[0035] The applicant has found that in the circuit breakers of the related art, since the life of the electronic components in the secondary part is far less than the life of the electrical structure in the primary part, but the failure frequency of the electronic components in the secondary part is higher than the failure frequency of the electrical structure in the primary part, when the secondary part fails, the probability of the primary part failing is low, and the circuit breaker still needs to be replaced as a whole. This not only has a negative impact on the reliability of the power supply system, but also increases the cost of the power supply system.

[0036] In order to solve the above problems, an embodiment of the present disclosure provides a circuit breaker with primary and secondary separation.

[0037] According to the technical solution provided by the embodiments of the present disclosure, a primary-secondary separation circuit breaker is provided, comprising a primary circuit breaker body and a secondary control unit; wherein the primary circuit breaker body includes a recess formed on a surface of the primary circuit breaker body and at least one connector disposed in the recess; the secondary control unit includes a secondary control unit body and at least one connector disposed on an outer surface of the secondary control unit body; the recess is used to accommodate the secondary control unit, and the connector in the primary circuit breaker body is used to connect with the connector in the secondary control unit, thereby electrically connecting the primary circuit breaker body and the secondary control unit. When the secondary control unit is not faulty, it can be accommodated in the recess of the primary circuit breaker body, and the secondary control unit and the primary circuit breaker body are detachably connected via their respective connectors, without affecting the functions of the secondary control unit and the primary circuit breaker body; when the secondary control unit fails, it can be removed from the recess of the primary circuit breaker body and the secondary control unit can be disconnected from the primary circuit breaker body, thereby conveniently replacing the faulty secondary control unit separately without affecting the normal function of the primary circuit breaker body, without having to replace the entire circuit breaker, thereby improving the reliability of the power supply system and reducing the cost of the power supply system.

[0038] Figure 1 A schematic structural diagram showing a circuit breaker with primary and secondary separation according to an embodiment of the present disclosure, Figure 2 A schematic structural diagram showing a circuit breaker with primary and secondary separation according to an embodiment of the present disclosure, Figure 3 A schematic structural diagram showing a circuit breaker with primary and secondary separation according to an embodiment of the present disclosure, Figure 4 The schematic structural diagram of a circuit breaker with primary and secondary separation according to an embodiment of the present disclosure is shown. Figure 1-Figure 4 Different implementations of a circuit breaker with primary and secondary separation are provided in the embodiments of the present disclosure.

[0039] like Figure 1-Figure 4 As shown, the primary and secondary separation circuit breaker includes a primary circuit breaker body 100 and a secondary control unit;

[0040] The primary circuit breaker body 100 includes a groove 101 formed on the surface of the primary circuit breaker body 100 and at least one connector 102 disposed in the groove 101;

[0041] The secondary control unit includes a secondary control unit body 201 and at least one connector provided on the outer surface of the secondary control unit body 201;

[0042] The groove 101 is used to accommodate the secondary control unit, and the connector 102 in the primary circuit breaker body 100 is used to be detachably connected to the connector in the secondary control unit, so that the primary circuit breaker body 100 is electrically connected to the secondary control unit.

[0043] In one implementation of the present disclosure, the primary circuit breaker body may include a primary circuit breaker body shell made of insulating material and a mechanism, an input and output line interface, a contact system, an arc extinguishing system, a first-stage protection mechanism, etc. arranged in the primary circuit breaker body shell. Furthermore, the primary circuit breaker body may also include a motor, a trip unit, a zero-sequence current transformer (CT), a temperature sensor, etc. arranged in the primary circuit breaker body shell.

[0044] In one implementation of the present disclosure, the connector disposed in the groove may be a socket, and the connector disposed on the outer surface of the secondary control unit body may be a plug or a pin that matches the socket.

[0045] According to the technical solution provided by the embodiments of the present disclosure, a primary-secondary separation circuit breaker is provided, comprising a primary circuit breaker body and a secondary control unit; wherein the primary circuit breaker body includes a recess formed on a surface of the primary circuit breaker body and at least one connector disposed in the recess; the secondary control unit includes a secondary control unit body and at least one connector disposed on an outer surface of the secondary control unit body; the recess is used to accommodate the secondary control unit, and the connector in the primary circuit breaker body is used to connect with the connector in the secondary control unit, thereby electrically connecting the primary circuit breaker body and the secondary control unit. When the secondary control unit is not faulty, it can be accommodated in the recess of the primary circuit breaker body, and the secondary control unit and the primary circuit breaker body are detachably connected via their respective connectors, without affecting the functions of the secondary control unit and the primary circuit breaker body; when the secondary control unit fails, it can be removed from the recess of the primary circuit breaker body and the secondary control unit can be disconnected from the primary circuit breaker body, thereby conveniently replacing the faulty secondary control unit separately without affecting the normal function of the primary circuit breaker body, without having to replace the entire circuit breaker, thereby improving the reliability of the power supply system and reducing the cost of the power supply system.

[0046] In one embodiment of the present disclosure, Figure 1-Figure 4 As shown, the circuit breaker further includes a groove cover 103 movably connected to the primary circuit breaker body 100 , for closing the opening of the groove 101 when the secondary control unit is accommodated in the groove 101 .

[0047] In one implementation of the present disclosure, the groove cover may be rotatably connected to the primary circuit breaker body via a rotating assembly, or may be slidably connected to the primary circuit breaker body via a sliding assembly.

[0048] According to the technical solution provided in the embodiment of the present disclosure, a groove cover movably connected to the primary circuit breaker body is provided to close the groove when the secondary control unit is accommodated in the groove. This can facilitate the protection of the secondary control unit accommodated in the groove and reduce the probability of damage or failure of the secondary control unit.

[0049] In one embodiment of the present disclosure, Figure 1-Figure 4 As shown, the circuit breaker further includes a groove cover locking assembly 104 , which is used to lock the groove cover 103 with the primary circuit breaker body 100 .

[0050] Exemplarily, the groove cover locking component may be a sealing screw, or a buckle or other structure.

[0051] According to the technical solution provided in the embodiment of the present disclosure, by providing a groove cover locking assembly for locking the groove cover to the primary circuit breaker body, the groove cover can be prevented from moving at will, and the secondary control unit can be fixed in the groove by the groove cover so that it will not move at will.

[0052] In one embodiment of the present disclosure, the groove cover may be made of a transparent material, thereby facilitating the user to observe the secondary control unit accommodated in the groove through the groove cover.

[0053] In one embodiment of the present disclosure, Figure 1-Figure 4 As shown, the secondary control unit further includes a communication module, which includes a communication module body 301 and at least one first communication interface 302 provided on the outer surface of the communication module body 301;

[0054] The secondary control unit body 201 further includes at least one second communication interface 202 provided on the outer surface of the secondary control unit body 201;

[0055] The first communication interface 302 is used for detachably connecting to the second communication interface 202 , so that the communication module is electrically connected to the secondary control unit body 201 .

[0056] In one embodiment of the present disclosure, the communication module is used to connect with the secondary control unit body, and the combined structure formed by the connection is a rectangular parallelepiped.

[0057] According to the technical solution provided by the embodiment of the present disclosure, the secondary control unit also includes a communication module, which includes a communication module body and at least one first communication interface provided on the outer surface of the communication module body; the secondary control unit body also includes at least one second communication interface provided on the outer surface of the secondary control unit body; the first communication interface is used to be detachably connected to the second communication interface, so that the communication module is electrically connected to the secondary control unit body. When the communication module is not faulty, it can be detachably connected to the secondary control unit body without affecting the respective functions of the communication module and the secondary control unit body; and when the communication module is faulty, it can be disconnected from the secondary control unit body, so that the faulty communication module can be replaced separately and more conveniently without affecting the normal function of the secondary control unit body, without having to replace the secondary control unit as a whole, thereby improving the reliability of the power supply system and reducing the cost of the power supply system.

[0058] In one embodiment of the present disclosure, Figure 5 Schematic structural diagram of the power board, main control board and display board according to the embodiment of the present disclosure is shown as follows: Figure 5 As shown, the secondary control unit body includes a secondary control unit housing and a power supply board 401, a main control board 402, and a display board 403 arranged in the secondary control unit housing;

[0059] The main control board 402 is disposed between the power board 401 and the display board 403 , and the main control board 402 is connected to the power board 401 and the display board 403 respectively.

[0060] In one embodiment of the present disclosure, the power board includes an AC / DC conversion circuit, a signal switching circuit, a voltage sampling circuit, and a topology circuit;

[0061] The main control board includes a metering CT sampling circuit, a protection CT sampling circuit, a residual current CT sampling circuit, a ground fault protection CT sampling circuit, a carrier communication circuit, a trip control circuit, a relay control circuit, a 6-channel temperature acquisition circuit, a CT power supply circuit, an opening and closing state detection circuit, and a travel switch state detection circuit;

[0062] The display panel includes a liquid crystal display, indicator lights, buttons, external interfaces, a manual-automatic switching switch and a Bluetooth module.

[0063] According to the technical solution provided in the embodiment of the present disclosure, the secondary control unit body includes a secondary control unit housing and a power board, a main control board, and a display board arranged in the secondary control unit housing; the main control board is arranged between the power board and the display board, and the main control board is connected to the power board and the display board respectively. By setting the power board, the main control board, and the display board, devices with corresponding functions can be more conveniently set on the corresponding boards, which facilitates the replacement or maintenance of devices with corresponding functions, reduces the structural complexity of the secondary control unit body, and reduces costs.

[0064] In one embodiment of the present disclosure, Figure 5 As shown, the second communication interface 404 is connected to the main control board 402, and the connector 405 in the secondary control unit is connected to the power board 401, which can facilitate the setting of the communication interface and the connector.

[0065] In one embodiment of the present disclosure, Figure 5 As shown, the main control board 402 is connected to the power board 401 and the display board 403 respectively through the insulating isolation column 406, which can reduce the probability of short circuit between the power board, the main control board and the display board, and improve reliability.

[0066] The above description is merely a preferred embodiment of the present disclosure and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this disclosure.

Claims

1. A circuit breaker with primary and secondary separation, characterized in that: It includes a primary circuit breaker body and a secondary control unit; The primary circuit breaker body includes a groove formed on a surface of the primary circuit breaker body and at least one connector disposed in the groove; The secondary control unit includes a secondary control unit body and at least one connector provided on the outer surface of the secondary control unit body; The groove is used to accommodate the secondary control unit, and the connector in the primary circuit breaker body is used to be detachably connected to the connector in the secondary control unit, so that the primary circuit breaker body is electrically connected to the secondary control unit; The secondary control unit body includes a secondary control unit housing and a power supply board, a main control board, and a display board arranged in the secondary control unit housing; The main control board is arranged between the power board and the display board, and the main control board is connected to the power board and the display board respectively; The connector in the secondary control unit is connected to the power board.

2. The primary and secondary separation circuit breaker according to claim 1, characterized in that: The circuit breaker further includes a groove cover movably connected to the primary circuit breaker body, for closing the groove when the secondary control unit is accommodated in the groove.

3. The primary and secondary separation circuit breaker according to claim 2, characterized in that: The circuit breaker further includes a groove cover locking assembly, which is used to lock the groove cover with the primary circuit breaker body.

4. The primary and secondary separation circuit breaker according to claim 2, characterized in that: The groove cover is made of transparent material.

5. The primary and secondary separation circuit breaker according to claim 1, characterized in that: The secondary control unit further includes a communication module, the communication module including a communication module body and at least one first communication interface provided on the outer surface of the communication module body; The secondary control unit body further includes at least one second communication interface provided on the outer surface of the secondary control unit body; The first communication interface is used for detachable connection with the second communication interface, so that the communication module is electrically connected to the secondary control unit body.

6. The primary and secondary separation circuit breaker according to claim 5, characterized in that: The communication module is used to be connected to the secondary control unit body, and the combined structure formed by the connection is a rectangular parallelepiped.

7. The circuit breaker with primary and secondary separation according to claim 5, characterized in that: The second communication interface is connected to the main control board.

8. The primary and secondary separation circuit breaker according to claim 5, characterized in that: The main control board is connected to the power board and the display board respectively through insulating isolation columns.

9. The primary and secondary separation circuit breaker according to claim 5, characterized in that: The power board includes an AC / DC conversion circuit, a signal switching circuit, a voltage sampling circuit and a topology circuit; The main control board includes a metering CT sampling circuit, a protection CT sampling circuit, a residual current CT sampling circuit, a ground fault protection CT sampling circuit, a carrier communication circuit, a trip control circuit, a relay control circuit, a 6-way temperature acquisition circuit, a CT power supply circuit, a closing and opening state detection circuit, and a travel switch state detection circuit; The display panel includes a liquid crystal display, an indicator light, a button, an external interface, a manual-automatic switching switch and a Bluetooth module.

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