CN210536313U - Circuit for recovering back electromotive force for charging - Google Patents
Circuit for recovering back electromotive force for charging Download PDFInfo
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- CN210536313U CN210536313U CN201921523730.4U CN201921523730U CN210536313U CN 210536313 U CN210536313 U CN 210536313U CN 201921523730 U CN201921523730 U CN 201921523730U CN 210536313 U CN210536313 U CN 210536313U
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Abstract
The utility model discloses a retrieve circuit that back electromotive force is used for charging, technical field is retrieved to the back electromotive force of concretely relates to motor. The circuit comprises a direct current power supply, a winding coil, a first diode, a second diode, a triode and a rechargeable battery, wherein the upper end of the winding coil is connected with the positive end of the direct current power supply, the negative end of the first diode is connected with the negative end of the rechargeable battery, the lower end of the winding coil is connected with the collector electrode of the triode, the negative end of the second diode is connected with the positive end of the rechargeable battery, the emitter electrode of the triode is connected with the negative end of the direct current power supply, the counter electromotive force generated after the driving winding coil (stator) inside the motor is powered off is timely led out by the circuit and is charged by the rechargeable battery or a capacitor independently, the aim of recycling and utilizing the counter electromotive force to charge energy is fulfilled, and meanwhile, electronic elements are protected from being burnt out by the breakdown of the counter electromotive force.
Description
Technical Field
The utility model relates to a technical field is retrieved to the back electromotive force of motor, concretely relates to retrieve circuit that back electromotive force is used for charging.
Background
In the prior art, in any device having a winding coil (such a coil is formed by winding a copper wire around an iron core in one direction, and is usually called an inductance coil, an electromagnetic coil, a winding coil, and the like, and for convenience of description, the winding coil is hereinafter referred to as a winding coil), a method for processing a counter electromotive force is a method for connecting a diode freewheeling current in a direction opposite to a power supply voltage in parallel at two ends of the winding coil, so as to achieve the purpose of saving energy or protecting electronic devices. If the method is applied to the motor, a freewheeling diode method is adopted, the instantaneous high voltage of the generated counter electromotive force can be fed back to the power supply at the moment of the power failure of a certain phase driving winding coil (stator), and the instantaneous high voltage can be applied to the next phase driving winding coil (stator).
In the prior art, no technology and method for leading out the counter electromotive force generated after the winding coil is powered off and charging the rechargeable battery are provided. Basically, a method of connecting a diode freewheeling in a direction opposite to that of the power supply in parallel across the winding coil is adopted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the aforesaid not enough, provide one kind with the inside back electromotive force that produces behind the drive winding coil outage of motor in time derive with power opposite direction to the circuit that the recovery back electromotive force that charges for solitary ability rechargeable battery or electric capacity is used for charging.
The utility model discloses specifically adopt following technical scheme:
the utility model provides a retrieve circuit that back electromotive force is used for charging, including DC power supply, the winding coil, first diode, the second diode, the triode can rechargeable battery, the DC power supply positive pole is connected to the upper end of winding coil, connect the negative pole of first diode simultaneously, the positive pole of first diode is connected with can rechargeable battery's negative pole, the lower extreme and the collecting electrode of triode of winding coil are connected, simultaneously with the positive pole of second diode be connected, the negative pole of second diode is connected with can rechargeable battery's positive pole, the projecting pole and the DC power supply negative pole of triode are connected.
Preferably, the base electrode of the triode is connected with a signal sensor, and the conduction and the cut-off of the triode are controlled through the signal of the signal sensor.
Preferably, the winding coil is formed by winding a copper wire in a multi-turn manner in a single direction and is wound on the iron core.
Preferably, the winding coil is hollow.
Preferably, the triode is a common triode, a field effect transistor or an IGBT bipolar transistor.
Preferably, the rechargeable battery is a rechargeable capacitor.
Preferably, the current of the winding coil is only driven by unidirectional current, and cannot be driven by bidirectional current.
Preferably, the first diode and the second diode are normal diodes or fast recovery diodes.
Preferably, the electronic components are connected by copper wires.
The utility model discloses following beneficial effect has:
the circuit can lead out the counter electromotive force which is generated after the driving winding coil (stator) in the motor is powered off and is opposite to the direction of a power supply in time, and charge an independent rechargeable battery or a capacitor, so as to achieve the purpose of energy conservation. Because the back electromotive force that produces after the outage of motor winding coil (stator) is derived in time, can protect electron device not burnt out the breakdown by the high pressure in the twinkling of an eye that back electromotive force produced, can make the power supply steadily supply power for the motor simultaneously, make the motor operation more smooth and easy, reduce motor rotary pulsation, the motor generates heat slowly, generates heat for a short time, and energy-conserving effect is obvious. In the process of the rotation operation of the motor, a plurality of driving winding coils (stators) are continuously switched on and off, so the derived counter electromotive force is not a single event but is actually a continuous counter electromotive force pulse train (not pure direct current), the continuous counter electromotive force pulse is derived to charge the rechargeable battery, and the rechargeable battery has the advantages of good charging effect, small battery heating, slow heating, more energy conservation and the like. The energy-saving effect is more visually embodied on the rechargeable battery, and the electric energy stored by the rechargeable battery can be used for other purposes.
This drive circuit is DC supply, and the speed governing is simple, and the speed governing mode is many, can control current voltage speed governing, can adopt PWM speed governing and so on, as long as adopt DC speed governing's mode, all can be applicable to the utility model discloses the circuit is very convenient.
Drawings
FIG. 1 is a circuit diagram of a circuit for recovering back EMF for charging;
fig. 2 is a circuit schematic diagram of a circuit of the circuit for driving a three-phase switched reluctance motor.
The charging circuit comprises a winding coil 1, a triode 2, a first diode 3, a second diode 4, a rechargeable battery 5, a first circuit for recovering back electromotive force for charging 6, a second circuit for recovering back electromotive force for charging 7 and a third circuit for recovering back electromotive force for charging 8.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, a circuit for recovering back electromotive force for charging comprises a dc power supply, a winding coil 1, a first diode 3, a second diode 4, a triode 2 and a rechargeable battery 5, wherein the upper end of the winding coil 1 is connected with the positive electrode of the dc power supply and is connected with the negative electrode of the first diode 3, the positive electrode of the first diode 3 is connected with the negative electrode of the rechargeable battery, the lower end of the winding coil 1 is connected with the collector of the triode 2 and is connected with the positive electrode of the second diode 4, the negative electrode of the second diode 4 is connected with the positive electrode of the rechargeable battery 5, the emitter of the triode 3 is connected with the negative electrode of the dc power supply, and all electronic elements are connected through copper wires.
The base electrode of the triode 2 is connected with a signal sensor, the conduction and the cut-off of the triode are controlled through a signal of the signal sensor, the winding coil is formed by winding copper wires in a unidirectional multi-turn mode and is wound on an iron core or is hollow, the triode 2 is a common triode, a field effect tube or an IGBT bipolar transistor, a rechargeable battery can be a storage battery, a lithium battery, a rechargeable capacitor, a battery or a capacitor capable of being repeatedly charged and discharged, the current of the winding coil is only driven by unidirectional current and cannot be driven by bidirectional current, and the first diode and the second diode are common diodes or fast recovery diodes.
The triode 2 is normally in a cut-off state, the circuit does not work at the moment, when the base electrode of the triode receives a signal from the signal sensor, the collector electrode and the emitter electrode of the triode are conducted, the circuit starts to work, the current of the direct current power supply flows to the negative electrode of the power supply through the winding coil and the collector electrode and the emitter electrode of the triode at the moment, and the first diode and the second diode at the two ends of the winding coil are opposite to the voltage direction of the direct current power supply at the moment and are not conducted;
when the base of the triode receives the signal applied to the base of the triode from the signal sensor and is interrupted, the collector and the emitter of the triode are disconnected, the triode is in a cut-off state at the moment, but when the circuit is conducted, the magnetic field stored in the winding coil does not disappear immediately, the magnetic field generates counter electromotive force, the counter electromotive force voltage is opposite to the direction of the power voltage and the direction of the first diode and the second diode is the same, and finally the counter electromotive force generated by the winding coil charges the rechargeable battery through the first diode and the second diode, and a cycle is completed.
As shown in fig. 2, the circuit drives a three-phase switched reluctance motor circuit, which connects three circuits for recovering back electromotive force in series for charging,
the upper end of a winding coil in the first circuit 6 for recovering the back electromotive force for charging is connected with the positive pole of a power supply, the lower end of the winding coil is connected with a collector of a triode, an emitter of the triode is connected with the negative pole of the power supply, and a base of the triode is connected with a signal sensor for detecting the position of a rotor so as to determine when the collector and the emitter of the triode are switched on and off.
The upper end of a winding coil in a second circuit 7 for recovering the back electromotive force for charging is connected with the positive electrode of a power supply, the lower end of the winding coil is connected with a collector of a triode, an emitter of the triode is connected with the negative electrode of the power supply, and a base of the triode is connected with a signal sensor for detecting the position of a rotor so as to determine when the collector and the emitter of the triode are switched on and off.
The upper end of a winding coil in a third circuit 8 for recovering the back electromotive force for charging is connected with the positive electrode of a power supply, the lower end of the winding coil is connected with a collector of a triode, an emitter of the triode is connected with the negative electrode of the power supply, and a base of the triode is connected with a signal sensor for detecting the position of a rotor so as to determine when the collector and the emitter of the triode are switched on and off.
The negative pole of the first diode in the first circuit 6 for recovering back electromotive force for charging, the second circuit 7 for recovering back electromotive force for charging and the third circuit 8 for recovering back electromotive force for charging is connected with the upper end of the winding coil, the positive pole of the first diode is connected with the positive pole of the second diode, the positive poles of the first diodes are connected, and the positive pole of the first diode is connected with the negative pole of the rechargeable battery.
The first circuit 6 for recovering back electromotive force for charging, the second circuit 7 for recovering back electromotive force for charging, and the third circuit 8 for recovering back electromotive force for charging have the anodes of the second diodes connected to the lower end of the winding coil, the cathodes of the respective second diodes connected to each other, and the third circuit for recovering back electromotive force for charging having the cathode of the second diode connected to the anode of the rechargeable battery.
The three-phase switch reluctance motor circuit driving process is as follows:
the triode in the first circuit 6 for recovering the back electromotive force for charging, the second circuit 7 for recovering the back electromotive force for charging and the third circuit 8 for recovering the back electromotive force for charging is in a cut-off state, and the circuits do not work at the moment;
in the first circuit 6 for recovering back electromotive force for charging, the base electrode of the triode in the first circuit 6 for recovering back electromotive force for charging receives a signal from the sensor for detecting the rotor position, so that the collector electrode and the emitter electrode of the triode are conducted, the circuit starts to work, and at the moment, the power current flows to the negative electrode of the power supply through the winding coil and the collector electrode and the emitter electrode of the triode. The first diode and the second diode at two ends of the winding coil are opposite to the direction of the power supply at the moment and are not conducted.
Next, in the first circuit 6 for recovering back emf for charging, the signal from the signal sensor applied to the base of the transistor in the first circuit 6 for recovering back emf for charging is interrupted, causing the collector and emitter of the transistor to be disconnected, the transistor being in the off state at this time, but the magnetic field stored in the winding coil does not disappear immediately when the circuit is turned on, the magnetic field will generate back emf, the back emf voltage is in the opposite direction to the power supply voltage, the same direction as the first diode and the second diode, and finally the back emf generated by the winding coil flows to the rechargeable battery through the first diode and the second diode.
In the next time, in the second circuit 7 for recovering the back electromotive force for charging, when the base electrode of the triode in the second circuit 7 for recovering the back electromotive force for charging receives a signal from the sensor for detecting the position of the rotor, the collector electrode and the emitter electrode of the triode are conducted, the circuit starts to work, and at the moment, the power current flows to the negative electrode of the power supply through the winding coil and the collector electrode and the emitter electrode of the triode. The first diode and the second diode at two ends of the winding coil are opposite to the direction of the power supply at the moment and are not conducted.
At the next time, in the second circuit 7 for recovering the back emf for charging, the signal applied to the base of the transistor from the signal sensor is interrupted, causing the disconnection of the collector from the emitter of the transistor, which is now in the off state, but the magnetic field stored in the winding coil does not disappear immediately when the circuit is switched on, which magnetic field will generate a back emf having a voltage opposite to the supply voltage and in the same direction as the first diode and the second diode, and finally the back emf generated by the winding coil flows through the first diode and the second diode to the rechargeable battery.
In the next time, in the third circuit 8 for recovering the back electromotive force for charging, when the base of the triode receives a signal from the sensor for detecting the rotor position, the collector and the emitter of the triode are conducted, the circuit starts to work, and at the moment, the power current flows to the negative electrode of the power supply through the winding coil and the collector and the emitter of the triode. The first diode and the second diode at two ends of the winding coil are opposite to the direction of the power supply at the moment and are not conducted.
At the next time, in the third circuit 8 for recovering back emf for charging, the signal from the signal sensor applied to the base of the transistor is interrupted, causing the collector and emitter of the transistor to be disconnected, the transistor being now in the off state, but the magnetic field stored in the winding coil does not disappear immediately when the circuit is switched on, the magnetic field will generate back emf, the back emf voltage is in the opposite direction to the supply voltage, in the same direction as the first diode and the second diode, and finally the back emf generated by the winding coil flows through the first diode and the second diode to the rechargeable battery.
The above is a cycle, and then the circuit repeats the above actions, resulting in continuous rotary operation of the switched reluctance motor. Meanwhile, the winding coils in the first circuit 6 for recovering the back electromotive force for charging, the second circuit 7 for recovering the back electromotive force for charging and the third circuit 8 for recovering the back electromotive force for charging are continuously electrified and deenergized to generate continuous back electromotive force pulses for charging the rechargeable battery.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (9)
1. The utility model provides a retrieve circuit that back electromotive force was used for charging, a serial communication port, including DC power supply, the winding coil, first diode, the second diode, the triode can rechargeable battery, the DC power supply positive pole is connected to the upper end of winding coil, connect the negative pole of first diode simultaneously, the positive pole of first diode is connected with the negative pole that can rechargeable battery, the lower extreme and the collecting electrode of triode of winding coil are connected, simultaneously with the positive pole of second diode be connected, the negative pole of second diode is connected with the positive pole that can rechargeable battery, the projecting pole and the DC power supply negative pole of triode are connected.
2. The circuit for recovering back electromotive force for charging as claimed in claim 1, wherein the base of the transistor is connected to a signal sensor, and the transistor is controlled to be turned on and off by a signal of the signal sensor.
3. The circuit for recovering back electromotive force for charging as claimed in claim 1, wherein said winding coil is a copper wire wound in a plurality of turns in one direction around an iron core.
4. A circuit for recovering back emf for charging as claimed in claim 1 wherein said winding coil is hollow.
5. The circuit for recovering back emf for charging of claim 1, wherein said transistor is a conventional transistor, a field effect transistor, or an IGBT bipolar transistor.
6. The circuit for recovering back emf for charging of claim 1 wherein said rechargeable battery is a battery, a battery cell, a lithium cell, a rechargeable capacitor, a rechargeable battery or a capacitor.
7. The circuit for recovering back emf for charging of claim 1 wherein current in said winding coil is only current driven in one direction and not current driven in two directions.
8. The circuit for recovering back electromotive force for charging as claimed in claim 1, wherein the first diode and the second diode are normal diodes or fast recovery diodes.
9. The circuit for recovering back emf for charging of claim 1 wherein the electronic components are connected by copper traces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921523730.4U CN210536313U (en) | 2019-09-13 | 2019-09-13 | Circuit for recovering back electromotive force for charging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921523730.4U CN210536313U (en) | 2019-09-13 | 2019-09-13 | Circuit for recovering back electromotive force for charging |
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| Publication Number | Publication Date |
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| CN210536313U true CN210536313U (en) | 2020-05-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474401A (en) * | 2019-09-13 | 2019-11-19 | 邢磊 | It is a kind of to recycle the charging system and charging method that counter electromotive force is used to charge |
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2019
- 2019-09-13 CN CN201921523730.4U patent/CN210536313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474401A (en) * | 2019-09-13 | 2019-11-19 | 邢磊 | It is a kind of to recycle the charging system and charging method that counter electromotive force is used to charge |
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