CN219018453U - Circuit breaker with binding post temperature monitoring function - Google Patents
Circuit breaker with binding post temperature monitoring function Download PDFInfo
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- CN219018453U CN219018453U CN202223040003.7U CN202223040003U CN219018453U CN 219018453 U CN219018453 U CN 219018453U CN 202223040003 U CN202223040003 U CN 202223040003U CN 219018453 U CN219018453 U CN 219018453U
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Abstract
The utility model discloses a circuit breaker with a wiring terminal temperature monitoring function, which is provided with a terminal temperature detection unit, a control unit and a control signal output unit; the terminal temperature detection unit is used for acquiring temperature information of a wiring terminal of the circuit breaker in real time, then sending the temperature information to the control unit, wherein a temperature threshold value is arranged in the control unit, the control unit compares the received temperature information with the temperature threshold value and then outputs a control signal to the control signal output unit, and the control signal output unit sends the received control signal to external switching equipment so as to control switching-on or switching-off of a power supply circuit; the technical problem that in the related art, the circuit breaker is poor in reliability due to the fact that the circuit breaker cannot monitor the temperature of the wiring terminal is solved.
Description
Technical Field
The utility model relates to the technical field of power supply equipment, in particular to a circuit breaker with a binding post temperature monitoring function.
Background
In the related art, a circuit breaker is used as an important component of an electric power supply system, a safe power supply mechanism of the circuit breaker is mainly used for monitoring input and output voltage and controlling and managing a power supply circuit according to the input and output voltage, the function is single, the reliability of a wiring terminal of the circuit breaker cannot be monitored, the temperature of the wiring terminal is easily increased due to the influence of wiring reasons or other environmental factors, and the power supply safety reliability is reduced.
Therefore, how to solve the technical problem of power supply safety caused by the fact that the circuit breaker cannot monitor the reliability of the terminal in the related art is a technical problem that needs to be solved by the person skilled in the art.
Disclosure of Invention
The embodiment of the utility model provides a circuit breaker with a wiring terminal temperature monitoring function, which is used for solving the technical problem that the circuit breaker in the related art cannot effectively monitor the reliability of a wiring terminal.
In a first aspect, an embodiment of the present utility model provides a circuit breaker having a terminal temperature monitoring function, comprising: at least one terminal temperature detecting unit, a control unit and a control signal output unit; the output end of the terminal temperature detection unit is connected with the input end of the control unit, and the output end of the control unit is connected with the input end of the control signal output unit;
wherein,,
the terminal temperature detection unit is used for acquiring temperature information of a wiring terminal of the circuit breaker;
the control unit is used for receiving the temperature information, comparing the temperature information with the temperature threshold and outputting a control signal;
the control signal output unit is used for receiving the control signal and sending the control signal to external switching equipment, and the switching equipment is used for controlling the switching-on or switching-off of a power supply line.
The circuit breaker with the temperature monitoring function of the wiring terminal has the following advantages:
the embodiment of the utility model discloses a circuit breaker with a wiring terminal temperature monitoring function, which is provided with a terminal temperature detection unit, a control unit and a control signal output unit; the terminal temperature detection unit is used for acquiring temperature information of a wiring terminal of the circuit breaker in real time, then sending the temperature information to the control unit, wherein a temperature threshold value is arranged in the control unit, the control unit compares the received temperature information with the temperature threshold value and then outputs a control signal to the control signal output unit, and the control signal output unit sends the received control signal to external switching equipment so as to control switching-on or switching-off of a power supply circuit; the technical problem that in the related art, the circuit breaker is poor in reliability due to the fact that the circuit breaker cannot monitor the temperature of the wiring terminal is solved; the circuit breaker can effectively and reliably monitor the wiring terminal of the circuit breaker.
According to other embodiments of the utility model, the circuit breaker with the terminal temperature monitoring function further comprises a main control module, wherein the main control module is connected with the control unit;
the main control module is used for setting the temperature threshold and sending the temperature threshold to the control unit, and the control unit outputs the control signal according to the temperature information and the temperature threshold.
According to other embodiments of the present utility model, the circuit breaker having a terminal temperature monitoring function includes an L-phase terminal temperature detecting unit and an N-phase terminal temperature detecting unit;
the output end of the L-phase terminal temperature detection unit and the output end of the N-phase terminal temperature detection unit are connected with the input end of the control unit;
the L-phase temperature detection unit is used for acquiring temperature information of an L-phase terminal;
the N-phase temperature detection unit is used for acquiring temperature information of the N-phase terminal.
According to other embodiments of the present utility model, the circuit breaker having a terminal temperature monitoring function, the L-phase terminal temperature detecting unit includes a first temperature sensor, a first resistor, a second resistor, and a first capacitor;
the first end of the first temperature sensor is connected with the first end of the first resistor, the first end of the second resistor and the first end of the first capacitor respectively, the second end of the second resistor is connected with an input power supply VDD, the second end of the first resistor is connected with the input end of the control unit, and the second end of the first temperature sensor and the second end of the first capacitor are grounded.
According to other embodiments of the present utility model, the circuit breaker having a terminal temperature monitoring function, the N-phase terminal temperature detecting unit includes a second temperature sensor, a third resistor, a fourth resistor, and a second capacitor;
the first end of the second temperature sensor is respectively connected with the first end of the third resistor, the first end of the fourth resistor and the first end of the second capacitor, the second end of the fourth resistor is connected with the input power supply VDD, the second end of the third resistor is connected with the input end of the control unit, and the second end of the second temperature sensor and the second end of the second capacitor are grounded.
According to other embodiments of the present utility model, the circuit breaker with a terminal temperature monitoring function includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a third capacitor, a first triode, a second triode, a first thyristor, and a signal output terminal;
the first end of the fifth resistor is connected with the output end of the control unit, the second end of the fifth resistor is connected with the base electrode of the first triode, the collector electrode of the first triode is connected with the first end of the sixth resistor and the first end of the seventh resistor respectively, the second end of the sixth resistor is connected with a circuit power supply voltage VCC, the second end of the seventh resistor is connected with the base electrode of the second triode, the emitter electrode of the second triode is connected with the circuit power supply voltage VCC, the collector electrode of the second triode is connected with the first end of the eighth resistor and the first end of the ninth resistor respectively, the second end of the eighth resistor is connected with the first end of the third capacitor and the gate electrode of the first thyristor respectively, the cathode electrode of the first thyristor, the second end of the third capacitor, the second end of the first resistor and the emitter electrode of the first transistor are all grounded, the anode electrode of the first thyristor is connected with the first end of the signal output terminal, and the signal output terminal of the second thyristor is connected with the signal output device.
According to other embodiments of the present utility model, the control unit includes an MCU circuit including an STM32G030F6P6 chip.
According to other embodiments of the present utility model, the main control module includes a Hi321910 chip.
In a second aspect, the embodiment of the utility model also provides a circuit breaker, which comprises a circuit breaker main body and the circuit breaker with the wiring terminal temperature monitoring function.
Drawings
Fig. 1 is a schematic diagram showing the module composition of a first embodiment of a circuit breaker with a terminal temperature monitoring function according to an embodiment of the present utility model;
fig. 2 is a schematic diagram showing the module composition of a second embodiment of a circuit breaker with a terminal temperature monitoring function according to an embodiment of the present utility model;
fig. 3 is a schematic diagram illustrating a module composition of a third embodiment of a circuit breaker with a terminal temperature monitoring function according to an embodiment of the present utility model;
FIG. 4 is a schematic circuit diagram of a control unit in a circuit breaker with terminal temperature monitoring function according to an embodiment of the present utility model;
fig. 5 is a schematic circuit diagram of a main control module in a circuit breaker with a terminal temperature monitoring function according to an embodiment of the present utility model;
fig. 6 is a schematic circuit diagram of a specific embodiment of an L-phase terminal temperature detecting unit and an N-phase terminal temperature detecting unit in a circuit breaker with a terminal temperature monitoring function according to an embodiment of the present utility model;
fig. 7 is a schematic circuit diagram of a control signal output unit in a circuit breaker with a terminal temperature monitoring function according to an embodiment of the present utility model.
Detailed Description
The conception and technical effects of the present utility model will be clearly and completely described in conjunction with the following examples to fully understand the objects, features and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model.
In the description of the embodiments of the present utility model, if "several" is referred to, it means more than one, if "multiple" is referred to, it is understood that the number is not included if "greater than", "less than", "exceeding", and it is understood that the number is included if "above", "below", "within" is referred to. If reference is made to "first", "second" it is to be understood as being used for distinguishing technical features and not as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Referring to fig. 1, an embodiment of the present utility model provides a circuit breaker having a terminal temperature monitoring function, which includes at least one terminal temperature detecting unit, a control unit, and a control signal output unit. The output end of the terminal temperature detection unit is connected with the input end of the control unit, and the terminal temperature detection unit is used for acquiring temperature information of the wiring terminal of the circuit breaker and sending the temperature information to the control unit; the output end of the control unit is connected with the input end of the control signal output unit, a temperature threshold value is arranged in the control unit, the control unit outputs a control signal to the control signal output unit after comparing the received temperature information with the temperature threshold value, the control signal output unit sends the received control signal to external switch equipment, the switch equipment controls the opening or closing of a power supply line according to the control signal, the power supply safety is realized, the problem that the circuit breaker cannot effectively monitor the temperature of the terminal is solved, when the temperature of the terminal is increased due to wiring problems or environmental factors, the damage of a device or the occurrence of a power supply dangerous event are easily caused, and the circuit breaker capable of effectively and reliably monitoring the temperature of the terminal is provided.
In some embodiments, the external switching device includes a relay that responds according to receiving the control signal output from the control signal output unit to effect opening or closing of the power supply line.
Referring to fig. 2, in some embodiments, the circuit breaker further includes a main control module; the main control module is connected with the control unit and is used for setting a temperature threshold and sending the temperature threshold to the control unit. In this embodiment, the temperature information transmitted by the terminal temperature detecting unit is voltage information, the temperature threshold corresponds to a specific voltage threshold, the terminal temperature detecting unit converts the temperature information change of the wiring terminal of the circuit breaker into corresponding voltage information change and transmits the corresponding voltage information change to the control unit, when the voltage information received by the control unit is greater than the voltage threshold, the control signal is output to the external switching device through the control signal output unit, the switching device performs switching-off operation, power supply of the current power supply line is closed, and electricity use safety is ensured.
Referring to fig. 3, in some embodiments, in order to more comprehensively monitor temperature information of each connection terminal of the circuit breaker, the terminal temperature detection unit includes an L-phase terminal temperature detection unit and an N-phase terminal temperature detection unit. The control unit receives the temperature information of the L-phase wiring terminal and the temperature information of the N-phase wiring terminal, and if the temperature information of any wiring terminal exceeds a set temperature threshold value, the control unit outputs a control signal to the control signal output unit, so that external switch equipment is controlled to perform a switching action, and power supply safety is ensured.
The following is a specific circuit implementation example, and a specific circuit composition structure of each constituent unit module is described:
referring to fig. 4, in this embodiment, the control unit includes an MCU circuit including an STM32G030F6P6 chip, and a specific pin connection structure thereof is shown in fig. 4.
Referring to fig. 5, in this embodiment, the main control module includes a Hi321910 chip, and the main control module and the control unit (STM 32G030F6P6 chip) are connected by serial communication.
Referring to fig. 6, in the present embodiment, the L-phase terminal temperature detection unit includes a first resistor R21, a second resistor R22, a first capacitor C10, and a first temperature sensor; the N-phase terminal temperature detection unit includes a third resistor R29, a fourth resistor R28, a second capacitor C12, and a second temperature sensor. In this embodiment, the first temperature sensor and the second temperature sensor are both disposed on the fixed terminal CN8, the first end of the first temperature sensor is connected to the first interface of the fixed terminal CN8, the first end of the second temperature sensor is connected to the third interface of the fixed terminal CN8, the second end of the first temperature sensor and the second end of the second temperature sensor are both connected to the second interface (grounding end) of the fixed terminal CN8, the first temperature sensor is a first temperature-sensitive resistor, and the first temperature-sensitive resistor is disposed on the L-phase connection terminal of the circuit breaker through the fixed terminal CN8, for obtaining the temperature information of the L-phase connection terminal; the second temperature-sensitive resistor is arranged on an N-phase wiring terminal of the circuit breaker through a fixed terminal CN8 and is used for acquiring temperature information of the N-phase wiring terminal. The first end of the first temperature sensor (the first interface of the fixed terminal CN 8) is connected to the first end of the first resistor R21, the first end of the second resistor R22, and the first end of the first capacitor C10, the second end of the second resistor R22 is connected to the input power VDD, the second end of the first resistor R21 is connected to the ADC0 pin of the control unit (STM 32G030F6P6 chip), the first end of the second temperature sensor (the third interface of the fixed terminal CN 8) is connected to the first end of the third resistor R29, the first end of the fourth resistor R28, and the first end of the second capacitor C12, the second end of the fourth resistor R28 is connected to the input power VDD, the second end of the third resistor R29 is connected to the ADC1 pin of the control unit STM32G030F6P6 chip, and the second end of the first capacitor C10, the second end of the second capacitor C12, and the ground end of the fixed terminal CN8 are all grounded. In this embodiment, after the first temperature sensor obtains the temperature information of the L-phase connection terminal, the temperature information is converted into corresponding voltage information through the specific circuit and is transmitted to the control unit, and after the control unit compares the received temperature information with the temperature threshold value, the control unit outputs a control signal to an external switching device through the control signal output unit to control the power supply line. Similarly, after the second temperature sensor acquires the temperature information of the N-phase wiring terminal, the temperature information is converted into corresponding voltage information through the specific circuit and is transmitted to the control unit, and after the control unit compares the received temperature information with the temperature threshold value, the control unit outputs a control signal to external switching equipment through the control signal output unit to control the power supply circuit.
Referring to fig. 7, in the present embodiment, the control signal output unit includes a fifth resistor R4, a sixth resistor R1, a seventh resistor R2, an eighth resistor R3, a ninth resistor R5, a third capacitor C2, a first transistor Q3, a second transistor Q1, a first thyristor Q2, and a signal output terminal CN4. In this embodiment, a first end of the fifth resistor R4 is connected to the output end RLO of the control unit, a second end of the fifth resistor R4 is connected to the base of the first transistor Q3, the collector of the first transistor Q3 is connected to the first end of the sixth resistor R1 and the first end of the seventh resistor R2, the second end of the sixth resistor R1 is connected to the circuit supply voltage VCC, the second end of the seventh resistor R2 is connected to the base of the second transistor Q1, the emitter of the second transistor Q1 is connected to the circuit supply voltage VCC, the collector of the second transistor Q1 is connected to the first end of the eighth resistor R3 and the first end of the ninth resistor R5, the second end of the eighth resistor R3 is connected to the first end of the third capacitor C2 and the gate of the first transistor Q2, the cathode of the first transistor Q1, the other end of the third capacitor C2, the second end of the ninth resistor R5 and the emitter of the first transistor Q3 are all grounded, and the collector of the first transistor Q2 is connected to the first terminal CN of the signal output terminal CN (i.e. the signal output terminal CN is connected to the second terminal CN 4). In this embodiment, when the output RLO of the control unit is at a high level, the first transistor Q3 and the second transistor Q1 are turned on, the first thyristor Q2 is turned on, the signal output terminal CN4 outputs an ul_out signal to the switching device, and the switching device performs a switching action, so as to protect the power safety of the user.
In some embodiments, after the main control module (Hi 321910 chip) is connected with the external adjusting device through software, the temperature threshold can be adjusted according to different application scenarios and sent to the control unit, so that the circuit can work under different temperature thresholds, and the applicability of the circuit is improved.
In summary, in the circuit breaker with the terminal temperature monitoring function according to the embodiment of the utility model, when any one of the temperature information of the L-phase terminal or the temperature information of the N-phase terminal received by the control unit (STM 32G030F6P6 chip) exceeds a temperature threshold, when the output RLO of the control unit is at a high level, the first triode Q3 and the second triode Q1 are turned on, the first diode Q2 is turned off, and an ul_out signal is output to the switching device, and the switching device performs a switching action, so that the electricity safety of a user is protected.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
Claims (8)
1. The circuit breaker with the wiring terminal temperature monitoring function is characterized by comprising at least one terminal temperature detection unit, a control unit and a control signal output unit; the output end of the terminal temperature detection unit is connected with the input end of the control unit, and the output end of the control unit is connected with the input end of the control signal output unit;
wherein,,
the terminal temperature detection unit is used for acquiring temperature information of a wiring terminal of the circuit breaker;
the control unit is used for receiving the temperature information, comparing the temperature information with the temperature threshold and outputting a control signal;
the control signal output unit is used for receiving the control signal and sending the control signal to external switching equipment, and the switching equipment is used for controlling the switching-on or switching-off of a power supply line.
2. The circuit breaker with the terminal temperature monitoring function according to claim 1, further comprising a main control module, wherein the main control module is connected with the control unit;
the main control module is used for setting the temperature threshold and sending the temperature threshold to the control unit, and the control unit outputs the control signal according to the temperature information and the temperature threshold.
3. The circuit breaker with a terminal temperature monitoring function according to claim 1 or 2, wherein the terminal temperature detection unit includes an L-phase terminal temperature detection unit and an N-phase terminal temperature detection unit;
the output end of the L-phase terminal temperature detection unit and the output end of the N-phase terminal temperature detection unit are connected with the input end of the control unit;
the L-phase terminal temperature detection unit is used for acquiring temperature information of an L-phase terminal;
the N-phase terminal temperature detection unit is used for acquiring temperature information of the N-phase terminal.
4. The circuit breaker with terminal temperature monitoring function of claim 3, wherein the L-phase terminal temperature detection unit comprises a first temperature sensor, a first resistor, a second resistor, and a first capacitor;
the first end of the first temperature sensor is connected with the first end of the first resistor, the first end of the second resistor and the first end of the first capacitor respectively, the second end of the second resistor is connected with an input power supply VDD, the second end of the first resistor is connected with the input end of the control unit, and the second end of the first temperature sensor and the second end of the first capacitor are grounded.
5. The circuit breaker with terminal temperature monitoring function of claim 4, wherein the N-phase terminal temperature detection unit comprises a second temperature sensor, a third resistor, a fourth resistor, and a second capacitor;
the first end of the second temperature sensor is respectively connected with the first end of the third resistor, the first end of the fourth resistor and the first end of the second capacitor, the second end of the fourth resistor is connected with the input power supply VDD, the second end of the third resistor is connected with the input end of the control unit, and the second end of the second temperature sensor and the second end of the second capacitor are grounded.
6. The circuit breaker with terminal temperature monitoring function according to claim 4 or 5, wherein the control signal output unit includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a third capacitor, a first triode, a second triode, a first thyristor, and a signal output terminal;
the first end of the fifth resistor is connected with the output end of the control unit, the second end of the fifth resistor is connected with the base electrode of the first triode, the collector electrode of the first triode is connected with the first end of the sixth resistor and the first end of the seventh resistor respectively, the second end of the sixth resistor is connected with a circuit power supply voltage VCC, the second end of the seventh resistor is connected with the base electrode of the second triode, the emitter electrode of the second triode is connected with the circuit power supply voltage VCC, the collector electrode of the second triode is connected with the first end of the eighth resistor and the first end of the ninth resistor respectively, the second end of the eighth resistor is connected with the first end of the third capacitor and the gate electrode of the first thyristor respectively, the cathode electrode of the first thyristor, the second end of the third capacitor, the second end of the first resistor and the emitter electrode of the first transistor are all grounded, the anode electrode of the first thyristor is connected with the first end of the signal output terminal, and the signal output terminal of the second thyristor is connected with the signal output device.
7. The circuit breaker with terminal temperature monitoring function of claim 6, wherein the control unit comprises an MCU circuit comprising an STM32G030F6P6 chip.
8. The circuit breaker with terminal temperature monitoring function of claim 2, wherein the main control module comprises a Hi321910 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223040003.7U CN219018453U (en) | 2022-11-14 | 2022-11-14 | Circuit breaker with binding post temperature monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223040003.7U CN219018453U (en) | 2022-11-14 | 2022-11-14 | Circuit breaker with binding post temperature monitoring function |
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| Publication Number | Publication Date |
|---|---|
| CN219018453U true CN219018453U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223040003.7U Active CN219018453U (en) | 2022-11-14 | 2022-11-14 | Circuit breaker with binding post temperature monitoring function |
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- 2022-11-14 CN CN202223040003.7U patent/CN219018453U/en active Active
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