CN112908800A - Electric energy storage system of circuit breaker - Google Patents
Electric energy storage system of circuit breaker Download PDFInfo
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- CN112908800A CN112908800A CN201911136340.6A CN201911136340A CN112908800A CN 112908800 A CN112908800 A CN 112908800A CN 201911136340 A CN201911136340 A CN 201911136340A CN 112908800 A CN112908800 A CN 112908800A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/06—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by current falling below a predetermined value
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
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Abstract
An electric energy storage system of a circuit breaker comprises an energy storage motor, a trigger device and an energy storage protection device, wherein the trigger device comprises a switch device and an operating mechanism used for closing and opening the switch device, the energy storage protection device comprises a control circuit unit connected with the switch device, the switch device inputs a closing signal to the control circuit unit when being closed, the switch device inputs an opening signal to the control circuit unit when being opened, the control circuit unit accumulates the closing signal duration and/or the opening signal duration of the switch device, if the closing signal duration of the switch device exceeds a specified closing threshold and/or the opening signal duration is less than a specified opening threshold, the switch device and/or the operating mechanism are considered to be in fault, the current of the energy storage motor does not need to be monitored, the phenomenon that the energy storage motor is damaged due to the fact that the switch device is adhered or the operating mechanism is blocked and blocked is not caused can be avoided, and has the characteristics of simple structure, small volume and low cost.
Description
Technical Field
The invention relates to the field of low-voltage electric appliances, in particular to an electric energy storage system of a circuit breaker.
Background
The electric energy storage system of the circuit breaker is used for providing required energy for the switching-on of the circuit breaker, and the principle is that an operating mechanism triggers a micro switch to start a motor to store energy, and when the energy storage is completed, the operating mechanism just disconnects the micro switch and turns off the motor. Because micro-gap switch connects on the power supply circuit of motor, has great electric current to pass through, the start and the closing of motor are all accomplished by micro-gap switch, and micro-gap switch switches over at every turn and all has the electric arc to produce certainly, and the adhesion appears easily through the start of a plurality of times and the contact of closing back micro-gap switch, leads to the unable disconnect-type of micro-gap switch, because the motor only runs for a short time in the system, and does not strengthen the heat dissipation and handle, and micro-gap switch's contact can rotate always and finally lead to the motor to burn out after the adhesion.
Although the conventional energy storage motor samples the time of current flowing through the electric circuit of the motor and compares the time with the energy storage completion time specified by the circuit breaker, when the time of current flowing through the electric circuit of the motor is greater than the energy storage completion time specified by the circuit breaker, the electric circuit of the motor is cut off to realize protection. However, the problem that the contact adhesion of the micro switch is damaged due to the arc cannot be solved fundamentally, the maintenance frequency cannot be reduced, the service life of the energy storage motor cannot be predicted, and the fault can be found out only after the fault occurs, so that the fault of the whole breaker system is caused, and the economic loss is caused.
In addition, when the existing energy storage motor is in a sliding buckle state in the circuit breaker operating mechanism, the operating mechanism cannot stop after moving to the position for closing the microswitch when energy storage is completed, the microswitch can be triggered by the operating mechanism again, the motor is started again, and the motor is burnt down due to circulation.
In addition, the conventional energy storage motor generally controls the starting and the closing of the motor through a neutral terminal and a normally open terminal of a micro switch, and a signal lamp is connected between the normally closed terminal and the neutral terminal of the micro switch as an energy storage end signal. However, if the signal lamp is missed by mistake and the neutral terminal and the normally closed terminal of the microswitch are directly connected to the power supply, the microswitch is short-circuited and burnt.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an electric energy storage system of a circuit breaker, which has a self-checking function and a long service life.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric energy storage system of a circuit breaker comprises an energy storage motor, a trigger device and an energy storage protection device, wherein the trigger device comprises a switch device and an operating mechanism for closing and opening the switch device, the energy storage protection device comprises a control circuit unit connected with the switch device, the switch device inputs a closing signal to the control circuit unit when being closed, the switch device inputs an opening signal to the control circuit unit when being opened, the control circuit unit accumulates the closing signal duration and/or the opening signal duration of the switch device, and if the closing signal duration of the switch device exceeds a specified closing threshold and/or the opening signal duration is smaller than a specified opening threshold, the switch device and/or the operating mechanism are considered to be in fault.
Preferably, the energy storage protection device further comprises a driving unit, the driving unit is connected between the control circuit unit and the energy storage motor, when the operating mechanism closes the switch device, the control circuit unit closes the driving unit to supply power to the energy storage motor, and when the operating mechanism opens the switch device, the control circuit unit closes the driving unit to stop supplying power to the energy storage motor.
Preferably, the energy storage protection device further comprises an acquisition module connected with the control circuit unit, and the acquisition module comprises a motor voltage acquisition circuit unit and/or a motor current acquisition circuit unit and/or a motor temperature acquisition circuit unit which are respectively connected with the control circuit unit.
Preferably, the control circuit unit can calculate the current service life of the energy storage motor according to the working parameters of the energy storage motor collected by the collection module, and alarm is given through the alarm module connected with the control circuit unit if the current service life is shorter than the specified service life.
Preferably, the energy storage protection device further comprises an alarm unit connected with the control circuit unit, and the control circuit unit can alarm and output the reason of the fault of the energy storage motor or the fault of the switching device or the fault of the operating mechanism through the alarm unit.
Preferably, the control circuit unit collects the operating current of the energy storage motor through the motor current collecting circuit unit, and when the operating current of the energy storage motor is greater than the operating current of the standard energy storage motor with preset multiple, the current service life of the energy storage motor is short.
Preferably, the control circuit unit collects the operating temperature of the energy storage motor through the motor temperature collection circuit unit, and when the temperature of the energy storage motor is higher than a preset temperature, the current service life of the energy storage motor is short.
Preferably, the energy storage protection device further comprises an operation indicating unit connected with the control circuit unit, and the operating mechanism can close the contact of the switch device to supply power to the energy storage motor, so that the control circuit unit indicates the power-on state of the energy storage motor through the operation indicating unit; when the operating mechanism can disconnect the contact of the switch device to stop supplying power to the energy storage motor, the control circuit unit indicates the power-off state of the energy storage motor through the operation indicating unit.
Preferably, the switch device is a microswitch, the operating mechanism is a cam arranged adjacent to the microswitch, the circumference of the cam can press a button of the microswitch to close a contact of the microswitch, a notch matched with the button of the microswitch is arranged on the circumference of the cam, and the notch can avoid the button of the microswitch to disconnect the contact of the microswitch.
Preferably, the motor voltage acquisition circuit unit is a voltage transformer or a resistance voltage division circuit, the motor current acquisition circuit unit is a resistance sampling or a transformer sampling or a hall sensor, and the motor temperature acquisition circuit unit is a positive temperature coefficient thermistor or a negative temperature coefficient thermistor or a temperature sensor.
Preferably, the remote control device further comprises a remote transmitting unit connected with the control circuit unit.
According to the electric energy storage system of the circuit breaker, the control circuit unit judges whether the contact of the switch device is adhered or the operating mechanism is blocked according to the closing signal duration of the switch device, the current of the energy storage motor does not need to be monitored, the damage of the energy storage motor caused by the adhesion of the switch device or the blocking fault of the operating mechanism can be avoided, and the electric energy storage system of the circuit breaker has the characteristics of simple structure, small volume and low cost.
In addition, the switching device does not directly supply power for the energy storage motor, the switching device of the trigger device is connected with the control circuit unit, the control circuit unit replaces the switching device with the driving unit to supply power for the energy storage motor, the switching device of the trigger device only needs to bear low voltage and low current of a signal level, the damage caused by electric arc when large current is cut off can be avoided, the service life of the energy storage system is effectively prolonged, the maintenance frequency is reduced, the switching device of the trigger device does not need to be connected with a power supply of the energy storage motor, and the problem that the switching device is burnt due to short circuit caused by wrong connection is effectively avoided.
In addition, the control circuit unit can judge the existing service life of the energy storage motor according to the running current and/or the running temperature of the energy storage motor, after the energy storage motor runs for a certain time, the running current of the energy storage motor is larger than the normal motor current due to the decrease of the insulating performance of the enameled wire and the aging of the bearing, the temperature of the energy storage motor is increased when the energy storage motor runs, and the control circuit unit stores the starting current, the running current and the running temperature of the normal standard energy storage motor in a chip of the control circuit unit as data.
Drawings
Fig. 1 is a schematic diagram of an electrical energy storage system of a circuit breaker in accordance with an embodiment of the invention;
fig. 2 is a schematic wiring diagram of an electric energy storage system of a circuit breaker according to an embodiment of the invention.
Detailed Description
The following describes further the embodiment of the electric energy storage system of the circuit breaker according to the invention with reference to the embodiments shown in fig. 1 to 2. The electric energy storage system of the circuit breaker created by the present invention is not limited to the description of the following embodiments.
As shown in fig. 1, the electric energy storage system of the circuit breaker includes an energy storage motor, a triggering device and an energy storage protection device, wherein the triggering device includes a switching device for controlling power supply to the energy storage motor and an operating mechanism for closing and opening the switching device, the energy storage protection device includes a control circuit unit connected to the switching device, the switching device inputs a closing signal to the control circuit unit when being closed, the switching device inputs an opening signal to the control circuit unit when being opened, and the control circuit unit can accumulate a closing signal duration and/or an opening signal duration of the switching device. The control circuit unit judges whether the contact of the switching device is adhered or the operating mechanism is blocked according to the closing signal duration and/or the opening signal duration of the switching device, if the closing signal duration of the switching device exceeds a specified closing threshold and/or the opening signal duration is less than a specified opening threshold, the switching device and/or the operating mechanism is considered to be in fault, and the control circuit unit can directly or indirectly turn off the energy storage motor or send corresponding alarm.
According to the electric energy storage system of the circuit breaker, the control circuit unit judges whether the contact of the switch device is adhered or the operating mechanism is blocked according to the closing signal duration of the switch device, the current of the energy storage motor does not need to be monitored, the damage of the energy storage motor caused by the adhesion of the switch device or the blocking fault of the operating mechanism can be avoided, and the electric energy storage system of the circuit breaker has the characteristics of simple structure, small volume and low cost.
Further, the control circuit unit is a single chip microcomputer, the energy storage protection device can supply power to the energy storage motor when the switch device is closed, the single chip microcomputer is triggered to time when the switch device is closed, the on-signal duration of the switch device starts to be accumulated through the single chip microcomputer, and the single chip microcomputer finishes the time counting when the switch device is disconnected. The singlechip judges when the timing is finished, if the duration time of a closing signal of the switching device exceeds a specified threshold value, the switching device is considered to be adhered or the operating mechanism has a clamping failure, the control circuit unit can send out an alarm through the alarm unit so as to process in time, and if the duration time of the closing signal of the switching device does not exceed the specified threshold value, the singlechip resets. Of course, the control circuit unit may also implement functions through a specific chip, and all of them belong to the protection scope of the present invention.
Furthermore, the energy storage protection device also comprises an alarm unit connected with the control circuit unit, and when the energy storage motor has a fault, the control circuit unit alarms through the alarm unit to output the reason of the fault of the energy storage motor or the fault of the switching device or the fault of the operating mechanism.
An embodiment is that the energy storage motor is supplied with power when the switching device is closed, the switching device is directly used for controlling the power supply for the energy storage motor, the switching device is connected in a loop for supplying power to the energy storage motor, the switching device can supply power to the energy storage motor and input a closing signal to the control circuit unit when the switching device is closed, the switching device is triggered to be closed or opened by the operating mechanism, the energy storage motor is supplied with power when the switching device is closed, and simultaneously the closing signal is input to the control circuit unit.
In another embodiment, the driving unit replaces the switch device to supply power to the energy storage motor, the driving unit is connected between the control circuit unit and the energy storage motor, the control circuit unit supplies power to the energy storage motor through the driving unit, when the operating mechanism closes the switch device, the switch device provides a closing signal for the control circuit unit, the control circuit unit closes the driving unit to supply power to the energy storage motor, when the operating mechanism opens the switch device, the switch device closes the driving unit through the control circuit unit to stop supplying power to the energy storage motor, and the switch device only needs to bear low voltage and low current at a signal level. The drive unit preferably adopts a module drive motor of a combination of power electronic devices or power electronic devices such as an MOSFET, an IGBT, a solid-state relay and the like, and compared with the existing mechanical switch, the mechanical switch has the advantages that the problem of mechanical contact adhesion cannot occur, and the service life is long. In addition, the driving unit can also adopt a single MOSFET as a switch for switching on or off the energy storage motor, or use a special motor such as an H bridge to drive a power device; the control circuit unit sends on/off signals or PWM pulse signals to the driving unit, and the driving unit controls the operation of the motor, which belongs to the protection scope of the invention.
According to the electric energy storage system of the circuit breaker, the switch device does not directly supply power to the energy storage motor, the switch device of the trigger device is connected with the control circuit unit, the control circuit unit replaces the switch device to supply power to the energy storage motor through the driving unit, the switch device of the trigger device only needs to bear low voltage and low current at a signal level, damage caused by electric arc when large current is cut off can be avoided, the service life of the energy storage system is effectively prolonged, maintenance frequency is reduced, the switch device of the trigger device does not need to be connected with a power supply of the energy storage motor, and the problem that the switch device is burnt due to short circuit caused by wrong wire connection is effectively avoided.
Furthermore, the energy storage protection device also comprises an acquisition module connected with the control circuit unit, the acquisition module can acquire working parameters of the energy storage motor, the acquisition module comprises a motor voltage acquisition circuit unit and/or a motor current acquisition circuit unit and/or a motor temperature acquisition circuit unit which are respectively connected with the control circuit unit, the control circuit unit can send out fault alarm through the alarm unit when the working parameters of the energy storage motor acquired by the acquisition module meet fault conditions, and/or close the driving unit to stop power supply of the motor, so that the functions of overvoltage protection, undervoltage protection, overcurrent protection, overtemperature protection and the like on the energy storage motor are realized.
The control circuit unit enables the alarm unit to give out a fault alarm when the voltage signal acquired by the motor voltage acquisition circuit unit is higher than a preset maximum abnormal voltage or lower than a preset minimum abnormal voltage;
the overcurrent protection function is realized by acquiring a current signal of the energy storage motor through the motor current acquisition circuit unit, and when the current signal acquired by the motor current acquisition circuit unit exceeds a preset maximum current value, the control circuit unit enables the alarm unit to send out a fault alarm;
the motor temperature acquisition circuit unit is used for acquiring a temperature signal of the energy storage motor, and when the temperature signal acquired by the motor temperature acquisition circuit unit is higher than a preset maximum temperature value, the control circuit unit enables the alarm unit to send out a fault alarm; namely, when the voltage input into the energy storage motor is abnormal, or the current value exceeds the expected value, or the temperature is higher than the preset value, the control circuit unit enables the alarm unit to send out a fault alarm.
The control circuit unit can obtain a service life ratio by comparing the working parameters of the energy storage motor when the energy storage motor is started for multiple times with the working parameters of the standard energy storage motor when the energy storage motor is started according to the working parameters of the energy storage motor collected by the collecting module, and multiplies the service life of the standard energy storage motor by the service life ratio to obtain the current service life of the energy storage motor, and if the current service life is shorter than the specified service life, an alarm module connected with the control circuit unit gives an alarm. The working parameters of the standard energy storage motor can be obtained by averaging the tests of multiple qualified products and also can be obtained by big data analysis.
Furthermore, the control circuit unit can judge the existing service life of the energy storage motor according to the running current and/or the running temperature of the energy storage motor, after the energy storage motor runs for a certain time, the running current of the energy storage motor is larger than the normal motor current due to the decrease of the insulating performance of the enameled wire and the aging of the bearing, and the temperature of the energy storage motor is increased when the energy storage motor runs, and the control circuit unit stores the starting current, the running current and the running temperature of the normal standard energy storage motor in a chip of the control circuit unit as data.
The control circuit unit acquires the running current of the energy storage motor through the motor current acquisition circuit unit, and when the running current of the energy storage motor is larger than the running current of the standard energy storage motor with preset times, the current service life of the energy storage motor is insufficient, and the control circuit unit can send an alarm through the alarm unit to remind the energy storage motor to be replaced; or when the starting current is judged, if the starting current of the energy storage motor acquired by the acquisition module is greater than the starting current of the standard energy storage motor with the preset multiple, the current service life of the energy storage motor is insufficient, the control circuit unit can send an alarm through the alarm unit to remind that the energy storage motor is replaced, and the preset multiple is preferably 1.2 times.
The control circuit unit can gather the operating temperature of energy storage motor through motor temperature acquisition circuit unit, when the temperature of energy storage motor is higher than predetermined high temperature, then it is not enough to explain energy storage motor's current life-span, and the control circuit unit can send out the police dispatch newspaper through alarm unit, reminds to change energy storage motor, and the operating temperature that the preferred standard energy storage motor of predetermined high temperature is more than 10 degrees.
Furthermore, the energy storage protection device also comprises a communication module connected with the control circuit unit, the communication module comprises a remote sending unit, and when the energy storage motor has a fault, the control circuit unit outputs the fault reason of the energy storage motor through the communication module. The failure causes include contact adhesion or jamming of the operating mechanism, slipping of the operating mechanism, abnormal voltage, current value exceeding the expected value, temperature higher than the preset value, etc. In addition, the control circuit unit can output the current service life of the energy storage motor through the communication module.
Furthermore, the energy storage protection device also comprises an operation indicating unit connected with the control circuit unit, the operation indicating unit indicates the working state of the energy storage motor, and the operating mechanism can close the contact of the switching device to supply power to the energy storage motor, so that the control circuit unit indicates the power-on state of the energy storage motor through the operation indicating unit; the operating mechanism can disconnect the contact of the switch device to stop supplying power to the energy storage motor, so that the control circuit unit indicates the power-off state of the energy storage motor through the operation indicating unit. The operation indicating unit can be in a relay output mode, a transistor output mode, a wireless signal output mode or an indicator light indicating mode. Referring to fig. 2, if a user mistakenly connects the alarm output terminal of the alarm unit or the operation output terminal of the operation indication unit to the power supply, the energy storage protection system will not work and the problem of short circuit will not occur.
As a preferred embodiment of the trigger device, the switch device is a microswitch, the operating mechanism is a cam arranged adjacent to the microswitch, the circumference of the cam can press a button of the microswitch to close a contact of the microswitch, a notch matched with the button of the microswitch is arranged on the circumference of the cam, the notch corresponds to a position where the energy storage motor stops storing energy, the notch can avoid the button of the microswitch to disconnect the contact of the microswitch, the structure is simple, and the occupied space is small. Of course, the switch device may be a travel switch, a photoelectric switch, a position switch, etc., all of which belong to the protection scope of the present invention.
As a preferred embodiment of the collecting module, the motor voltage collecting circuit unit is a voltage transformer or a resistance voltage dividing circuit, the motor current collecting circuit unit is a resistance sampling or a transformer sampling or a hall sensor, and the motor temperature collecting circuit unit is a positive temperature coefficient thermistor or a negative temperature coefficient thermistor or a temperature sensor, and the like, which belong to the protection scope created by the present invention.
As a preferred embodiment of the communication module, the communication module includes a remote sending unit, and the remote sending unit may be a WIFI module, a bluetooth module, or a frequency band transmitting module. In addition, the communication module can also comprise an input unit, the working parameters of the control circuit unit are set through the input unit, the management and the maintenance are convenient, and the input unit can be in a remote communication mode or a button input mode, and the communication module belongs to the protection scope of the invention.
As a preferred embodiment of the control circuit unit, the control circuit unit is a single chip or a digital circuit.
When the control mechanism is in a stop position, a trigger point of the microswitch extends out, the microswitch outputs a normally open signal to the control circuit unit, the control unit sends a motor closing signal to the driving unit to close the energy storage motor, and simultaneously closes the operation indicating unit and the alarm unit, and the relay outputs of the operation indicating unit and the alarm unit are in a disconnected state;
when the operating mechanism starts to store energy, the operating mechanism rotates to an energy storage position and triggers a button of the microswitch to retract, the microswitch outputs a normally closed signal to the control circuit unit, the control unit sends a starting motor signal to the driving unit to start the energy storage motor, and meanwhile, the operating indicating unit outputs a closing signal;
after the control circuit unit detects that the microswitch is triggered, the driving unit operates and drives the energy storage motor to store energy, the operation indicating unit is driven to indicate the working state, meanwhile, the voltage sampling circuit unit, the current sampling unit and the temperature acquisition unit respectively process data of the energy storage motor and send the data to the control circuit unit for calculation, when the voltage input into the energy storage motor is abnormal, or the current value exceeds the preset value, or the temperature is higher than the preset value, the control circuit unit enables the alarm unit to send out fault alarm, and meanwhile, the remote sending unit sends out fault information. After the energy storage is finished, the operating mechanism resets the microswitch, the control power supply unit turns off the energy storage motor through the driving unit after detecting that the microswitch resets, and the operation indicating unit outputs a stop state indication.
When the micro-switch is stuck or the operating mechanism is stuck, the closing time of the micro-switch is prolonged, and whether the closing time of the micro-switch is greater than a specified closing threshold value needs to be judged. The control circuit judges the time of the microswitch at the energy storage position, and if the time is continuously longer than the longest closing time, namely the closing threshold value is regulated, the control circuit unit closes the driving unit, and simultaneously opens the alarm unit and sends out fault information through the remote sending unit.
When the operating mechanism is in sliding connection, energy is automatically released soon after energy storage is completed, the operating mechanism triggers the micro switch to be closed quickly, the off time (stop time) is shortened, the operating mechanism triggers the micro switch frequently, the off time of the micro switch is shortened, and whether the off time of the micro switch is smaller than the preset off threshold time needs to be judged. The control circuit judges the time of the micro switch at the stop position, and if the time is continuously less than the shortest stop time, namely continuously less than a preset disconnection threshold value, the control circuit unit closes the driving unit, and simultaneously opens the alarm unit and sends out fault information through the remote sending unit.
The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the inventive concept, and all should be considered as falling within the protection scope of the invention.
Claims (10)
1. An electronic energy storage system of circuit breaker which characterized in that: the energy storage protection device comprises a control circuit unit connected with the switching device, the switching device inputs a closing signal to the control circuit unit when being closed, the switching device inputs an opening signal to the control circuit unit when being opened, the control circuit unit accumulates the closing signal duration and/or the opening signal duration of the switching device, and if the closing signal duration of the switching device exceeds a specified closing threshold and/or the opening signal duration is smaller than a specified opening threshold, the switching device and/or the operating mechanism are considered to be in fault.
2. The electrical energy storage system of a circuit breaker of claim 1, wherein: the energy storage protection device further comprises a driving unit, the driving unit is connected between the control circuit unit and the energy storage motor, when the operating mechanism closes the switch device, the control circuit unit closes the driving unit to supply power to the energy storage motor, and when the operating mechanism opens the switch device, the control circuit unit closes the driving unit to stop supplying power to the energy storage motor.
3. The electrical energy storage system of a circuit breaker of claim 1, wherein: the energy storage protection device further comprises an acquisition module connected with the control circuit unit, and the acquisition module comprises a motor voltage acquisition circuit unit and/or a motor current acquisition circuit unit and/or a motor temperature acquisition circuit unit which are respectively connected with the control circuit unit.
4. The electrical energy storage system of a circuit breaker of claim 1, wherein: the control circuit unit can calculate the current service life of the energy storage motor according to the working parameters of the energy storage motor collected by the collection module, and if the current service life is shorter than the specified service life, the alarm module connected with the control circuit unit gives an alarm.
5. The electrical energy storage system of a circuit breaker of claim 1, wherein: the remote transmitting unit is connected with the control circuit unit; the energy storage protection device also comprises an alarm unit connected with the control circuit unit, and the control circuit unit can alarm and output the reason of the fault of the energy storage motor or the fault of the switching device or the fault of the operating mechanism through the alarm unit.
6. The electrical energy storage system of a circuit breaker of claim 4, wherein: the control circuit unit collects the running current of the energy storage motor through the motor current collecting circuit unit, and when the running current of the energy storage motor is larger than the running current of the standard energy storage motor with preset multiple, the current service life of the energy storage motor is short.
7. The electrical energy storage system of a circuit breaker of claim 4, wherein: the control circuit unit collects the operating temperature of the energy storage motor through the motor temperature collection circuit unit, and when the temperature of the energy storage motor is higher than a preset temperature, the existing service life of the energy storage motor is short.
8. The electrical energy storage system of a circuit breaker of claim 1, wherein: the operating mechanism can close the contact of the switching device to supply power to the energy storage motor, so that the control circuit unit indicates the power-on state of the energy storage motor through the operation indicating unit; when the operating mechanism can disconnect the contact of the switch device to stop supplying power to the energy storage motor, the control circuit unit indicates the power-off state of the energy storage motor through the operation indicating unit.
9. The electrical energy storage system of a circuit breaker of claim 1, wherein: the switch device is a microswitch, the operating mechanism is a cam which is arranged adjacent to the microswitch, the circumference of the cam can press a button of the microswitch to close a contact of the microswitch, a notch which is matched with the button of the microswitch is arranged on the circumference of the cam, and the notch can avoid the button of the microswitch to disconnect the contact of the microswitch.
10. The electrical energy storage system of a circuit breaker of claim 3, wherein: the motor voltage acquisition circuit unit is a voltage transformer or a resistance voltage division circuit, the motor current acquisition circuit unit is a resistance sampling or a transformer sampling or a Hall sensor, and the motor temperature acquisition circuit unit is a positive temperature coefficient thermistor or a negative temperature coefficient thermistor or a temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136340.6A CN112908800A (en) | 2019-11-19 | 2019-11-19 | Electric energy storage system of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136340.6A CN112908800A (en) | 2019-11-19 | 2019-11-19 | Electric energy storage system of circuit breaker |
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| CN112908800A true CN112908800A (en) | 2021-06-04 |
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| CN201911136340.6A Pending CN112908800A (en) | 2019-11-19 | 2019-11-19 | Electric energy storage system of circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933691A (en) * | 2021-07-30 | 2022-01-14 | 东风商用车有限公司 | Switch endurance automatic testing and monitoring system based on MCU control |
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2019
- 2019-11-19 CN CN201911136340.6A patent/CN112908800A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933691A (en) * | 2021-07-30 | 2022-01-14 | 东风商用车有限公司 | Switch endurance automatic testing and monitoring system based on MCU control |
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