Pluggable modular metering type electronic molded case circuit breaker

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a plug-in modular metering type electronic molded case circuit breaker, which comprises a circuit breaker body, a comprehensive protection unit module and a bottom module used for providing a connecting interface, and the comprehensive protection unit module comprises a main control core module used for receiving signals and controlling. The circuit breaker comprises a circuit breaker body, a metering module used for sampling voltage and current and metering accumulated electric energy, a protection sampling module used for protecting circuit sampling, an action module used for controlling on-off of the circuit breaker body, and a communication module used for networking communication. According to the utility model, the maintenance and replacement of the integrated protection unit module are facilitated through the detachable installation of the integrated protection unit module, the modularization degree is high, the labor intensity of operators can be reduced, the metering of accumulated electric energy, overvoltage, undervoltage, open-phase and overload protection and the automatic opening and communication of the circuit breaker body can be realized, and the working efficiency is improved. The circuit breaker protection circuit is wide in application range and good in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a plug-in modular metering electronic molded case circuit breaker. Background Art

[0002] A circuit breaker, also known as an automatic switch or air switch, is an electrical device that plays a key protective role in a circuit. Its main function is to automatically cut off the circuit when a circuit fault such as overload, short circuit or undervoltage occurs, so as to prevent damage to electrical equipment or electrical fires, thereby ensuring the safe operation of circuits and electrical systems. However, with the development of intelligent technology, the simple overload, short circuit, and instantaneous functions on the traditional circuit breaker platform can no longer meet daily needs. The demand for power accumulation, power consumption calculation, voltage, and current protection in the circuit breaker field is gradually increasing. Although there are intelligent circuit breakers with similar functions on the market, most of them are integrated, inconvenient to maintain, and not modular enough. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing circuit breakers are difficult to maintain, have a low degree of modularization, and have relatively single functions.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a plug-in modular metering electronic molded case circuit breaker, comprising a circuit breaker body, a comprehensive protection unit module and a bottom module for providing a connection interface, wherein the bottom module is installed on the circuit breaker body, the comprehensive protection unit module is pluggable and installed on the circuit breaker body, the comprehensive protection unit module is connected to the bottom module, the comprehensive protection unit module comprises a main control core module for receiving signals and performing control, a metering module for sampling voltage and current and measuring accumulated electric energy, a protection sampling module for sampling protection circuits, an action module for controlling the opening of the circuit breaker body, and a communication module for networked communication, and the bottom module is provided with an anti-open circuit protection module for preventing the circuit breaker body from opening and burning.

[0005] When the utility model is working, the detachable installation of the comprehensive protection unit module facilitates the maintenance and replacement of the comprehensive protection unit module, and the modularization degree is high, which can reduce the labor intensity of operators, shorten the maintenance time, and improve work efficiency. At the same time, it can realize a series of tasks such as the metering of accumulated electric energy, overvoltage, undervoltage, phase failure and overload protection, automatic opening and communication of the circuit breaker body, and anti-open circuit protection, and has a wide range of applications and good versatility.

[0006] Preferably, the metering module includes a metering chip U1, a connector JP18, a first current sampling circuit, a second current sampling circuit, a third current sampling circuit, a first voltage sampling circuit, a second voltage sampling circuit and a third voltage sampling circuit. The connector JP18, the first current sampling circuit, the second current sampling circuit, the third current sampling circuit, the first voltage sampling circuit, the second voltage sampling circuit and the third voltage sampling circuit are all connected to the metering chip U1, and the first current sampling circuit, the second current sampling circuit and the third current sampling circuit are all connected to the connector JP18.

[0007] Preferably, the first current sampling circuit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and a capacitor C2, a first end of the resistor R1 is respectively connected to a corresponding current sampling point, a first end of the resistor R2 and a second pin of the connector JP18, a second end of the resistor R2 is connected to a V1P port of a metering chip U1 and is grounded through the capacitor C1, a first end of the resistor R4 is respectively connected to a corresponding current sampling point, a first end of the resistor R3 and a first pin of the connector JP18, a second end of the resistor R4 is connected to a V1N port of the metering chip U1 and is grounded through the capacitor C2, and a second end of the resistor R2 and a second end of the resistor R3 are both grounded.

[0008] Preferably, the first voltage sampling circuit includes a resistor R5, a resistor R6, a resistor R113, a resistor R114, a resistor R115, a resistor R116, a resistor R117, a resistor R118, a capacitor C3 and a capacitor C4, a first end of the resistor R113 is connected to a corresponding voltage sampling reference point, a second end of the resistor R113 is connected to a corresponding voltage sampling point and is connected to a V2P port of a metering chip U1 through resistors R114, R115, R116 and R117, the V2P port of the metering chip U1 is grounded through resistors R5, R118 and capacitor C3, and a V2N port of the metering chip U1 is grounded through resistors R6 and capacitor C4.

[0009] Preferably, the protection sampling module includes a first protection sampling circuit, a second protection sampling circuit and a third protection sampling circuit. The first protection sampling circuit includes an operational amplifier U11, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R316, a resistor R317, a capacitor C31 and a capacitor C32. The inverting input terminal of the operational amplifier U11 is connected to the first end of the resistor R33. The second end of the resistor R33 is connected to the fifteenth pin of the connector JP18 through the resistor R32 and is grounded through the resistor C32. The positive input terminal of the operational amplifier U11 is grounded through the resistor R316 and is connected to the power supply through the resistor R317. The inverting input terminal of the operational amplifier U11 is connected to the output terminal of the operational amplifier U11 through the resistor R31 and the capacitor C31 respectively. The output terminal of the operational amplifier U11 is connected to the PA1 port of the main control core module through the resistor R34.

[0010] Preferably, the anti-open circuit protection module includes a first anti-open circuit protection circuit, a second anti-open circuit protection circuit and a third anti-open circuit protection circuit. The first anti-open circuit protection circuit includes a transient suppression tube D8, a transient suppression tube D10, a rectifier chip B1, a resistor R35, the first pin and the second pin of the connector JP18 are connected through the transient suppression tube D8, the first port and the second port of the rectifier chip B1 are connected through the transient suppression tube D10, the third port of the rectifier chip B1 is connected to the power supply, and the fourth port of the rectifier chip B1 is connected to the fifteenth pin of the connector JP18.

[0011] Preferably, it further comprises an expansion unit module, and the expansion unit module is pluggably installed on the circuit breaker body.

[0012] Preferably, the extension unit module is configured as a carrier module.

[0013] When the utility model is working, by providing a detachable expansion unit module, it is convenient for the user to add or remove corresponding expansion unit modules according to actual use needs, and it is convenient for maintenance, thus meeting the function expansion needs of the user.

[0014] The detachable installation of the comprehensive insurance unit module facilitates the maintenance and replacement of the comprehensive insurance unit module.

[0015] The beneficial technical effects of the utility model include:

[0016] 1. The utility model facilitates the maintenance and replacement of the comprehensive protection unit module through the detachable installation of the comprehensive protection unit module. It has a high degree of modularization, can reduce the labor intensity of operators, shorten maintenance time, and improve work efficiency. At the same time, it can realize a series of tasks such as cumulative electric energy measurement, overvoltage, undervoltage, phase failure and overload protection, automatic opening and communication of the circuit breaker body, and anti-open circuit protection, etc. It has a wide range of applications and good versatility.

[0017] 2. The utility model provides a detachable expansion unit module, which is convenient for users to add or remove corresponding expansion unit modules according to actual usage needs, and is also convenient for maintenance, thus meeting the user's functional expansion needs.

[0018] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of a plug-in modular metering electronic molded case circuit breaker;

[0021] Figure 2 This is the circuit structure diagram of the main control core module;

[0022] Figure 3 Part of the circuit structure of the metering module Figure 1 ;

[0023] Figure 4 Part of the circuit structure of the metering module Figure 2 ;

[0024] Figure 5 Part of the circuit structure of the metering module Figure 3 ;

[0025] Figure 6 To protect the circuit structure diagram of the sampling module;

[0026] Figure 7 This is the circuit structure diagram of the open circuit protection module;

[0027] Figure 8 This is the circuit structure diagram of the action module;

[0028] Fig. 9 This is the circuit structure diagram of the carrier module. DETAILED DESCRIPTION

[0029] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0030] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0031] Please see attached Figure 1 This embodiment discloses a plug-in modular metering electronic molded case circuit breaker, including a circuit breaker body 1, a comprehensive protection unit module 2 and a bottom module 3 for providing a connection interface, which is described in detail below with reference to the accompanying drawings.

[0032] In this embodiment, the bottom module 3 is installed on the circuit breaker body 1, the comprehensive protection unit module 2 is pluggably installed on the circuit breaker body 1, the comprehensive protection unit module 2 is connected to the bottom module 3, the comprehensive protection unit module 2 includes a main control core module for receiving signals and controlling, a metering module for sampling voltage and current and measuring accumulated electric energy, a protection sampling module for protecting circuit sampling, an action module for controlling the opening of the circuit breaker body 1, and a communication module for network communication. The bottom module 3 is provided with an anti-open circuit protection module for preventing the circuit breaker body 1 from opening and burning.

[0033] When this embodiment is working, the detachable installation of the comprehensive protection unit module 2 facilitates the maintenance and replacement of the comprehensive protection unit module 2. The high degree of modularization can reduce the labor intensity of operators, shorten maintenance time, and improve work efficiency. At the same time, it can realize a series of tasks such as cumulative electric energy measurement, overvoltage, undervoltage, phase failure and overload protection, automatic opening and communication of the circuit breaker body 1, and anti-open circuit protection. It has a wide range of applications and good versatility.

[0034] Please see attached Figure 2 To Attachment Fig. 9The metering module includes a metering chip U1, a connector JP18, a first current sampling circuit, a second current sampling circuit, a third current sampling circuit, a first voltage sampling circuit, a second voltage sampling circuit and a third voltage sampling circuit. The connector JP18, the first current sampling circuit, the second current sampling circuit, the third current sampling circuit, the first voltage sampling circuit, the second voltage sampling circuit and the third voltage sampling circuit are all connected to the metering chip U1, and the first current sampling circuit, the second current sampling circuit and the third current sampling circuit are all connected to the connector JP18.

[0035] Preferably, the first current sampling circuit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and a capacitor C2, the first end of the resistor R1 is respectively connected to the corresponding current sampling point, the first end of the resistor R2 and the second pin of the connector JP18, the second end of the resistor R2 is connected to the V1P port of the metering chip U1 and is grounded through the capacitor C1, the first end of the resistor R4 is respectively connected to the corresponding current sampling point, the first end of the resistor R3 and the first pin of the connector JP18, the second end of the resistor R4 is connected to the V1N port of the metering chip U1 and is grounded through the capacitor C2, and the second end of the resistor R2 and the second end of the resistor R3 are both grounded.

[0036] In a specific implementation, the first voltage sampling circuit includes a resistor R5, a resistor R6, a resistor R113, a resistor R114, a resistor R115, a resistor R116, a resistor R117, a resistor R118, a capacitor C3 and a capacitor C4. The first end of the resistor R113 is connected to the corresponding voltage sampling reference point, the second end of the resistor R113 is connected to the corresponding voltage sampling point and is connected to the V2P port of the metering chip U1 through the resistor R114, the resistor R115, the resistor R116 and the resistor R117. The V2P port of the metering chip U1 is grounded through the resistor R5, the resistor R118 and the capacitor C3, and the V2N port of the metering chip U1 is grounded through the resistor R6 and the capacitor C4.

[0037] Please see attached Figure 6The protection sampling module includes a first protection sampling circuit, a second protection sampling circuit and a third protection sampling circuit. The first protection sampling circuit includes an operational amplifier U11, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R316, a resistor R317, a capacitor C31 and a capacitor C32. The inverting input terminal of the operational amplifier U11 is connected to the first end of the resistor R33. The second end of the resistor R33 is connected to the fifteenth pin of the connector JP18 through the resistor R32 and is grounded through the resistor C32. The positive input terminal of the operational amplifier U11 is grounded through the resistor R316 and is connected to the power supply through the resistor R317. The inverting input terminal of the operational amplifier U11 is connected to the output terminal of the operational amplifier U11 through the resistor R31 and the capacitor C31 respectively. The output terminal of the operational amplifier U11 is connected to the PA1 port of the main control core module through the resistor R34.

[0038] Preferably, the anti-open circuit protection module includes a first anti-open circuit protection circuit, a second anti-open circuit protection circuit and a third anti-open circuit protection circuit. The first anti-open circuit protection circuit includes a transient suppression tube D8, a transient suppression tube D10, a rectifier chip B1, a resistor R35, and the first pin and the second pin of the connector JP18 are connected through the transient suppression tube D8, the first port and the second port of the rectifier chip B1 are connected through the transient suppression tube D10, the third port of the rectifier chip B1 is connected to the power supply, and the fourth port of the rectifier chip B1 is connected to the fifteenth pin of the connector JP18.

[0039] As a further improvement of this embodiment, an expansion unit module 4 is also included. The expansion unit module 4 is pluggable and installed on the circuit breaker body 1. For example, the expansion unit module 4 can be set as a carrier module or any other suitable expansion module.

[0040] When the present embodiment is working, by providing a detachably installed expansion unit module 4, it is convenient for the user to add or remove the corresponding expansion unit module 4 according to actual use requirements, and it is convenient for maintenance, thus meeting the user's functional expansion needs.

[0041] The beneficial technical effects of this embodiment include: the detachable installation of the comprehensive protection unit module facilitates the maintenance and replacement of the comprehensive protection unit module, and the high degree of modularization can reduce the labor intensity of operators, shorten maintenance time, and improve work efficiency. At the same time, it can realize a series of tasks such as cumulative electric energy metering, overvoltage, undervoltage, phase failure and overload protection, automatic opening and communication of the circuit breaker body, and anti-open circuit protection, etc., with a wide range of applications and good versatility.

[0042] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A plug-in modular metering electronic molded case circuit breaker, characterized in that: The invention comprises a circuit breaker body (1), a comprehensive protection unit module (2) and a bottom module (3) for providing a connection interface, wherein the bottom module (3) is mounted on the circuit breaker body (1), the comprehensive protection unit module (2) is pluggably mounted on the circuit breaker body (1), the comprehensive protection unit module (2) is connected to the bottom module (3), the comprehensive protection unit module (2) comprises a main control core module for receiving signals and performing control, a metering module for sampling voltage and current and measuring accumulated electric energy, a protection sampling module for sampling protection circuits, an action module for controlling the opening of the circuit breaker body (1), and a communication module for communication, and the bottom module (3) is provided with an anti-open circuit protection module for preventing the circuit breaker body (1) from being open-circuited and burned.

2. The plug-in modular metering electronic molded case circuit breaker according to claim 1, characterized in that: The metering module includes a metering chip U1, a connector JP18, a first current sampling circuit, a second current sampling circuit, a third current sampling circuit, a first voltage sampling circuit, a second voltage sampling circuit and a third voltage sampling circuit. The connector JP18, the first current sampling circuit, the second current sampling circuit, the third current sampling circuit, the first voltage sampling circuit, the second voltage sampling circuit and the third voltage sampling circuit are all connected to the metering chip U1, and the first current sampling circuit, the second current sampling circuit and the third current sampling circuit are all connected to the connector JP18.

3. The plug-in modular metering electronic molded case circuit breaker according to claim 2, characterized in that: The first current sampling circuit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and a capacitor C2. The first end of the resistor R1 is respectively connected to the corresponding current sampling point, the first end of the resistor R2 and the second pin of the connector JP18. The second end of the resistor R2 is connected to the V1P port of the metering chip U1 and is grounded through the capacitor C1. The first end of the resistor R4 is respectively connected to the corresponding current sampling point, the first end of the resistor R3 and the first pin of the connector JP18. The second end of the resistor R4 is connected to the V1N port of the metering chip U1 and is grounded through the capacitor C2. The second end of the resistor R2 and the second end of the resistor R3 are both grounded.

4. The plug-in modular metering electronic molded case circuit breaker according to claim 2, characterized in that: The first voltage sampling circuit includes a resistor R5, a resistor R6, a resistor R113, a resistor R114, a resistor R115, a resistor R116, a resistor R117, a resistor R118, a capacitor C3 and a capacitor C4. The first end of the resistor R113 is connected to the corresponding voltage sampling reference point, the second end of the resistor R113 is connected to the corresponding voltage sampling point and connected to the V2P port of the metering chip U1 through the resistor R114, the resistor R115, the resistor R116 and the resistor R117. The V2P port of the metering chip U1 is grounded through the resistor R5, the resistor R118 and the capacitor C3 respectively, and the V2N port of the metering chip U1 is grounded through the resistor R6 and the capacitor C4 respectively.

5. The plug-in modular metering electronic molded case circuit breaker according to claim 2, characterized in that: The protection sampling module includes a first protection sampling circuit, a second protection sampling circuit and a third protection sampling circuit. The first protection sampling circuit includes an operational amplifier U11, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R316, a resistor R317, a capacitor C31 and a capacitor C32. The inverting input terminal of the operational amplifier U11 is connected to the first end of the resistor R33. The second end of the resistor R33 is connected to the fifteenth pin of the connector JP18 through the resistor R32 and is grounded through the resistor C32. The positive input terminal of the operational amplifier U11 is grounded through the resistor R316 and is connected to the power supply through the resistor R317. The inverting input terminal of the operational amplifier U11 is connected to the output terminal of the operational amplifier U11 through the resistor R31 and the capacitor C31 respectively. The output terminal of the operational amplifier U11 is connected to the PA1 port of the main control core module through the resistor R34.

6. The plug-in modular metering electronic molded case circuit breaker according to claim 2, characterized in that: The anti-open circuit protection module includes a first anti-open circuit protection circuit, a second anti-open circuit protection circuit and a third anti-open circuit protection circuit. The first anti-open circuit protection circuit includes a transient suppression tube D8, a transient suppression tube D10, a rectifier chip B1, a resistor R35, a first pin and a second pin of the connector JP18 are connected through the transient suppression tube D8, a first port and a second port of the rectifier chip B1 are connected through the transient suppression tube D10, a third port of the rectifier chip B1 is connected to a power supply, and a fourth port of the rectifier chip B1 is connected to the fifteenth pin of the connector JP18.

7. The pluggable modular metering electronic molded case circuit breaker according to claim 1, characterized in that: It also comprises an expansion unit module (4), wherein the expansion unit module (4) is pluggably mounted on the circuit breaker body (1).

8. The plug-in modular metering electronic molded case circuit breaker according to claim 7, characterized in that: The expansion unit module (4) is configured as a carrier module.

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