CN219989012U - Intelligent control circuit of electric vehicle circuit breaker - Google Patents
Intelligent control circuit of electric vehicle circuit breaker Download PDFInfo
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- CN219989012U CN219989012U CN202321279294.7U CN202321279294U CN219989012U CN 219989012 U CN219989012 U CN 219989012U CN 202321279294 U CN202321279294 U CN 202321279294U CN 219989012 U CN219989012 U CN 219989012U
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- circuit
- control circuit
- sampling
- electric vehicle
- output
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- 238000005070 sampling Methods 0.000 claims abstract description 43
- 239000003990 capacitor Substances 0.000 claims description 39
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 13
- 239000010703 silicon Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 10
- 230000010355 oscillation Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The utility model discloses an intelligent control circuit of an electric vehicle circuit breaker, which comprises: the sampling circuit is connected to the main circuit and is used for sampling the circulating current of the main circuit; the control circuit is connected with the sampling circuit and also connected with the electromagnetic component and used for receiving the sampling current output by the sampling circuit, and an adjustable current threshold value is arranged in the control circuit; and the power supply circuit is used for being connected with an external storage battery, and also connected with the sampling circuit and the control circuit and used for providing power for the sampling circuit and the control circuit. According to the intelligent control circuit of the electric vehicle circuit breaker, a stable power supply can be effectively provided for the sampling circuit and the control circuit through the arrangement of the power supply circuit, and the running stability of the circuit is ensured.
Description
Technical Field
The utility model relates to a control circuit, in particular to an intelligent control circuit of an electric vehicle circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying and opening a current under normal circuit conditions, and capable of closing, carrying and opening a current under abnormal circuit conditions for a prescribed time. The circuit breaker can be used for distributing electric energy, does not frequently start an asynchronous motor, protects a power line, the motor and the like, can automatically cut off the circuit when serious overload or short circuit, undervoltage and other faults occur, and has the functions equivalent to the combination of a fuse type switch, an over-under-heating relay and the like. The main contact of the low-voltage circuit breaker is manually operated or electrically switched on; when the circuit is under-voltage, the armature of the under-voltage release is released, and the free release mechanism is also enabled to act. The above is an overview of the internal structure of the existing circuit breaker, and the circuit breaker used in the electric vehicle in the prior art is the same as the above.
Most of the existing circuit breakers directly take electricity from the electric vehicle circuit, so that the direct current step-down circuit is adopted to take electricity, and then the electricity is supplied to the internal circuit of the circuit breaker, however, as the electric vehicle circuit power is mainly provided through a battery, the current and the voltage provided by the battery are easily influenced by the external temperature, and the operation stability of the internal circuit of the circuit breaker is easily influenced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide an intelligent control circuit of an electric vehicle circuit breaker, which runs stably.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an intelligent control circuit of an electric vehicle circuit breaker, comprising:
the sampling circuit is connected to the main circuit and is used for sampling the circulating current of the main circuit;
the control circuit is connected with the sampling circuit and also connected with the electromagnetic component and used for receiving the sampling current output by the sampling circuit, an adjustable current threshold value is arranged in the control circuit, and when the sampling current received by the control circuit is greater than the built-in threshold value, the control circuit controls the external driving component to generate magnetic force so as to drive the external tripping component to trip;
and the power supply circuit is used for being connected with an external storage battery, and also connected with the sampling circuit and the control circuit and used for providing power for the sampling circuit and the control circuit.
As a further improvement of the present utility model, the power supply circuit includes:
the power transformer T1 is provided with a primary coil and a secondary coil, one end of the secondary coil is connected with a diode D1 and then connected with the cathode of the storage battery, the other end of the secondary coil is connected with a diode D2 and then connected with a filter circuit and then outputs power, and the primary coil is connected with the anode of the storage battery and is also connected with an oscillating circuit.
As a further improvement of the present utility model, the filter circuit includes:
the filter capacitor group comprises a polar capacitor E2, a polar capacitor E3 and a polar capacitor E4, wherein the polar capacitor E2, the polar capacitor E3 and the polar capacitor E4 are connected in parallel, and the positive electrode end is connected with the diode D2 after being connected with each other so as to output a low-voltage power supply;
and a collector of the triode Q2 is connected to the diode D2, an emitter is grounded, the collector is connected with the resistor R12 and then is connected with the negative terminals of the polar capacitor E2, the polar capacitor E3 and the polar capacitor E4, and the collector is also connected with the resistor R14 and then is connected with the control circuit.
As a further improvement of the present utility model, the control circuit includes:
the control chip is provided with an input end, an output end and a threshold value adjusting end, wherein the input end is electrically connected with the sampling circuit, the threshold value adjusting end is connected with a gear adjusting switch and used for adjusting a current threshold value, and the output end is used for outputting a control signal;
and the driving circuit is connected with the output end of the control chip and also connected with an external driving component and is used for powering on the driving component to generate magnetic force after receiving the control signal output by the output end.
As a further improvement of the present utility model, the driving circuit includes:
the anode of the silicon controlled rectifier Q1 is connected with the electromagnetic component and then grounded, the cathode of the silicon controlled rectifier Q1 is connected to a power supply, and the gate of the silicon controlled rectifier Q1 is connected with a resistor and a capacitor which are connected in parallel and then connected with the power supply;
the driving optocoupler is provided with an input loop and an output loop, the input loop is connected with the output end of the control chip so as to receive a control signal output by the output end, and the output loop is connected with the gate electrode of the silicon controlled rectifier Q1.
As a further improvement of the present utility model, the oscillating circuit includes:
an oscillation chip having an oscillation output pin connected with the primary coil of the power transformer T1 to generate an oscillation current in the primary coil.
As a further improvement of the present utility model, the sampling circuit includes:
the amplifying chip is provided with an in-phase input end, an opposite-phase input end and an amplifying output end, wherein the in-phase input end is connected with a resistor and then connected to the main circuit, the opposite-phase input end is connected with the resistor and then connected to the amplifying output end, and the amplifying output end is connected with the input end of the control chip after being parallel with a capacitor.
As a further improvement of the present utility model, there is also provided a temperature detection module mounted on the battery anode and connected with the control chip to input detected temperature data, the temperature detection module comprising:
and the temperature sensor is attached to the positive electrode of the battery, and the signal output end of the temperature sensor is connected with a capacitor and a resistor which are mutually connected in parallel and then connected to the control chip.
The circuit breaker has the beneficial effects that the stable and reliable power supply can be effectively provided for the sampling circuit and the control circuit through the arrangement of the power supply circuit, so that compared with the mode in the prior art, the operation of the internal circuit of the circuit breaker can be more stable and reliable.
Drawings
FIG. 1 is a circuit diagram of a control circuit;
FIG. 2 is a circuit diagram of a sampling circuit;
FIG. 3 is a circuit diagram of a power supply circuit;
fig. 4 is a circuit diagram of the temperature detection module.
Detailed Description
The utility model will be further described in detail with reference to examples of embodiments shown in the drawings.
Referring to fig. 1 to 4, an intelligent control circuit for an electric vehicle circuit breaker according to the present embodiment is characterized in that: comprising the following steps:
a sampling circuit 31 connected to the main circuit for sampling a current flowing through the main circuit;
the control circuit 32 is connected with the sampling circuit 31 and the electromagnetic component 41, and is used for receiving the sampling current output by the sampling circuit 31, the control circuit 32 is internally provided with an adjustable current threshold, and when the sampling current received by the control circuit 32 is greater than the built-in threshold, the control circuit 32 controls the external driving component to generate magnetic force so as to drive the external tripping component to trip;
the power supply circuit 33 is used for being connected with an external storage battery, is also connected with the sampling circuit 31 and the control circuit 32, is used for providing power for the sampling circuit 31 and the control circuit 32, can effectively realize providing stable power for the sampling circuit 31 and the control circuit 32 through the arrangement of the power supply circuit 33, effectively ensures the running stability of the whole control circuit, and can effectively realize the effect of adjusting the tripping current threshold through the arrangement of the control circuit 32, so that the power supply circuit is well suitable for internal circuits of electric vehicles with different specifications.
As an improved embodiment, the power supply circuit 33 includes:
the power transformer T1, this power transformer T1 has primary coil and secondary coil, the one end of secondary coil is connected with diode D1 back and connects the battery negative pole, and the other end of this secondary coil is connected with behind the diode D2 and is connected with output power behind the filter circuit, primary coil is connected with the battery positive pole, still is connected with oscillating circuit, through the setting of power transformer T1 in the power circuit 33, alright effectual realization provides stable power for control circuit 32, so compare in the mode among the prior art, the functional is stronger, intelligent degree is higher, wherein still is connected with overvoltage protection device between power transformer T1 and the battery.
As an improved specific embodiment, the filter circuit includes:
the filter capacitor group comprises a polar capacitor E2, a polar capacitor E3 and a polar capacitor E4, wherein the polar capacitor E2, the polar capacitor E3 and the polar capacitor E4 are connected in parallel, and the positive electrode end is connected with the diode D2 after being connected with each other so as to output a low-voltage power supply;
and the triode Q2, the collector of the triode Q2 is connected to the diode D2, the emitter is grounded, the collector is connected with the resistor R12 and then is connected with the negative ends of the polar capacitor E2, the polar capacitor E3 and the polar capacitor E4, the collector is also connected with the resistor R14 and then is connected with the control circuit 32, and through the arrangement of the structure, a triode filter circuit can be effectively formed, so that the power supply provided by the power supply circuit is more stable and reliable.
As an improved embodiment, the control circuit 32 includes:
the control chip 321, the control chip 321 has an input end, an output end and a threshold value adjusting end, the input end is electrically connected with the sampling circuit 31, the threshold value adjusting end is connected with a gear adjusting switch for adjusting the current threshold value, and the output end is used for outputting a control signal;
the driving circuit 322 is connected with the output end of the control chip 321, is also connected with an external driving component, and is used for receiving a control signal output by the output end and then electrifying the driving component to generate magnetic force, and the effect of intelligently controlling the tripping component 2 to trip can be effectively achieved through the arrangement of the structure.
In one embodiment of an improvement, the driving circuit 322 includes:
the anode of the silicon controlled rectifier Q1 is connected with the electromagnetic component 41 and then grounded, the cathode of the silicon controlled rectifier Q1 is connected to a power supply, and the gate of the silicon controlled rectifier Q1 is connected with a resistor and a capacitor which are connected in parallel and then connected with the power supply;
the driving optocoupler 323 is provided with an input loop and an output loop, the input loop is connected with the output end of the control chip 321 to receive a control signal output by the output end, the output loop is connected with the gate electrode of the silicon controlled rectifier Q1, and whether tripping operation is performed or not can be controlled by utilizing the on-off characteristic of the silicon controlled rectifier Q1 to realize whether current passes through the driving coil 412 or not through the arrangement of the circuit structure.
As an improved embodiment, the oscillating circuit includes:
the oscillating chip (331), this oscillating chip (331) has the oscillating output pin, the primary coil of oscillating output pin and power transformer T1 is connected, in order to produce the oscillating current in the primary coil, so can be effectual with transformer T1 cooperation combination form a flyback switching power supply circuit, so realized for the steady power supply of control chip 321.
As an improved embodiment, the sampling circuit 31 includes:
the amplifying chip 311 is provided with a non-inverting input end, an inverting input end and an amplifying output end, the non-inverting input end is connected with a resistor and then connected to the main circuit, the inverting input end is connected with the resistor and then connected to the amplifying output end, the amplifying output end is connected with the input end of the control chip 321 after being parallel with a capacitor, and the effect of amplifying sampled current can be effectively achieved through the arrangement of the amplifying chip 311, so that the control chip 321 can better identify the current.
As an improved embodiment, the battery also comprises a temperature detection module, the temperature detection module is installed on the positive electrode of the battery and is further connected with the control chip 321 to input detected temperature data, and the temperature detection module comprises:
the temperature sensor is mounted on the battery anode in a fitting manner, the signal output end of the temperature sensor is connected with a capacitor and a resistor which are connected in parallel and then connected to the control chip 321, so that the temperature of the anode of the battery of the electric vehicle can be detected, the effect of triple protection tripping is achieved by combining the sampling circuit 31 and the additional component 42, the intelligent degree of the circuit breaker is further improved, and the temperature of the anode of the battery can be simply and effectively converted into data through the arrangement of the temperature sensor and then is input into the control chip 321. In summary, the control circuit of the present embodiment, through the arrangement of the power supply circuit 33 therein, can effectively provide stable power to the sampling circuit 31 and the control circuit 32, and effectively ensure the stability of the operation of the control circuit 32.
The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (8)
1. An intelligent control circuit of an electric vehicle circuit breaker is characterized in that: comprising the following steps:
the sampling circuit (31) is connected to the main circuit and is used for sampling the circulating current of the main circuit;
the control circuit (32) is connected with the sampling circuit (31) and also connected with the electromagnetic component (41) and is used for receiving sampling current output by the sampling circuit (31), an adjustable current threshold value is arranged in the control circuit (32), and when the sampling current received by the control circuit (32) is greater than the built-in threshold value, the control circuit (32) controls the external driving component to generate magnetic force so as to drive the external tripping component to trip;
and the power supply circuit (33) is used for being connected with an external storage battery, and is also connected with the sampling circuit (31) and the control circuit (32) and used for providing power for the sampling circuit (31) and the control circuit (32).
2. The intelligent control circuit of an electric vehicle circuit breaker of claim 1, wherein: the power supply circuit (33) includes:
the power transformer T1 is provided with a primary coil and a secondary coil, one end of the secondary coil is connected with a diode D1 and then connected with the cathode of the storage battery, the other end of the secondary coil is connected with a diode D2 and then connected with a filter circuit and then outputs power, and the primary coil is connected with the anode of the storage battery and is also connected with an oscillating circuit.
3. The intelligent control circuit of an electric vehicle circuit breaker of claim 2, wherein:
the filter circuit includes:
the filter capacitor group comprises a polar capacitor E2, a polar capacitor E3 and a polar capacitor E4, wherein the polar capacitor E2, the polar capacitor E3 and the polar capacitor E4 are connected in parallel, and the positive electrode end is connected with the diode D2 after being connected with each other so as to output a low-voltage power supply;
and a collector of the triode Q2 is connected to the diode D2, an emitter is grounded, the collector is connected with the resistor R12 and then is connected with negative terminals of the polar capacitor E2, the polar capacitor E3 and the polar capacitor E4, and the collector is also connected with the resistor R14 and then is connected with the control circuit (32).
4. The intelligent control circuit of an electric vehicle circuit breaker of claim 3, wherein: the control circuit (32) includes:
the control chip (321) is provided with an input end, an output end and a threshold value adjusting end, wherein the input end is electrically connected with the sampling circuit (31), the threshold value adjusting end is connected with a gear adjusting switch and used for adjusting a current threshold value, and the output end is used for outputting a control signal;
and the driving circuit (322) is connected with the output end of the control chip (321) and is also connected with an external driving component, and is used for powering on the driving component to generate magnetic force after receiving the control signal output by the output end.
5. The intelligent control circuit of an electric vehicle circuit breaker of claim 4, wherein: the drive circuit (322) includes:
the anode of the silicon controlled rectifier Q1 is connected with the electromagnetic component (41) and then grounded, the cathode of the silicon controlled rectifier Q1 is connected to a power supply, and the gate of the silicon controlled rectifier Q1 is connected with a resistor and a capacitor which are connected in parallel and then connected with the anode of the storage battery;
the driving optocoupler (323) is provided with an input loop and an output loop, the input loop is connected with the output end of the control chip (321) so as to receive a control signal output by the output end, and the output loop is connected with the gate electrode of the silicon controlled rectifier Q1.
6. The electric vehicle circuit breaker intelligent control circuit according to any one of claims 2 to 5, characterized in that: the oscillation circuit includes:
an oscillation chip (331), the oscillation chip (331) having an oscillation output pin, the oscillation output pin being connected with a primary coil of the power transformer T1 to generate an oscillation current in the primary coil.
7. The electric vehicle circuit breaker intelligent control circuit according to any one of claims 1 to 5, characterized in that: the sampling circuit (31) includes:
the amplifying chip (311) is provided with a non-inverting input end, an inverting input end and an amplifying output end, wherein the non-inverting input end is connected with a resistor and then connected to a main circuit, the inverting input end is connected with the resistor and then connected to the amplifying output end, and the amplifying output end is connected with an input end of the control chip (321) after being parallel with a capacitor.
8. The intelligent control circuit of an electric vehicle circuit breaker of claim 7, wherein: still include temperature detection module, this temperature detection module installs on the battery positive pole, still is connected with control chip (321) to the temperature data of input detection, temperature detection module includes:
and the temperature sensor is mounted on the positive electrode of the battery in a fitting way, and the signal output end of the temperature sensor is connected with a capacitor and a resistor which are mutually connected in parallel and then is connected to the control chip (321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321279294.7U CN219989012U (en) | 2023-05-23 | 2023-05-23 | Intelligent control circuit of electric vehicle circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321279294.7U CN219989012U (en) | 2023-05-23 | 2023-05-23 | Intelligent control circuit of electric vehicle circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219989012U true CN219989012U (en) | 2023-11-10 |
Family
ID=88611486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321279294.7U Active CN219989012U (en) | 2023-05-23 | 2023-05-23 | Intelligent control circuit of electric vehicle circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219989012U (en) |
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2023
- 2023-05-23 CN CN202321279294.7U patent/CN219989012U/en active Active
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