CN104377685A - Motor controller anti-reverse-connection and anti-back-flow redundancy power supply circuit for electric car - Google Patents
Motor controller anti-reverse-connection and anti-back-flow redundancy power supply circuit for electric car Download PDFInfo
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- CN104377685A CN104377685A CN201410723856.1A CN201410723856A CN104377685A CN 104377685 A CN104377685 A CN 104377685A CN 201410723856 A CN201410723856 A CN 201410723856A CN 104377685 A CN104377685 A CN 104377685A
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Abstract
The invention relates to a motor controller anti-reverse-connection and anti-back-flow redundancy power supply circuit for an electric car. The motor controller anti-reverse-connection and anti-back-flow redundancy power supply circuit comprises an MOS transistor Q1. The drain of the MOS transistor Q1 is connected with the anode of a diode D1 and then connected with a main power supply. The cathode of the diode D1 is connected with one end of a resistor R3. The other end of the resistor R3 is connected with the base of a triode Q2. The transmitter of the triode Q2 is grounded. The collector of the triode Q2 is connected with the grid of the MOS transistor Q1 through a resistor R2. The source of the MOS transistor Q1 is respectively connected with one ends of a redundancy power supply and a load. The other end of the load is grounded. The motor controller anti-reverse-connection and anti-back-flow redundancy power supply circuit has the advantages that the power supply conditions of the main power supply can be monitored in real time, the MOS transistor Q1 shuts off output when the reverse connection of the main power supply occurs, related devices are prevented from continuously working under a power supply fault state, and the devices especially a power device IGBT are prevented from being damaged; when the main power supply is off, the redundancy power supply starts working, the MOS transistor Q1 is off, the circuit between the redundancy power supply and the main power supply is disconnected, and the redundancy power supply is prevented from flowing back into the main power supply.
Description
Technical field
The present invention relates to electric vehicle engineering field, the redundant power supply circuit that especially a kind of electric machine controller for motor vehicle reverse connection preventing pours in down a chimney.
Background technology
In electric vehicle controller, power supply needed for all chips is all converted through DC/DC by car load 12V lead acid accumulator, if main power source is stopped power supply or main power source generation reversal connection fault under emergency case, directly will affect the normal work of controller controling circuit, and then affect vehicle performance, cause traffic safety hidden danger.For the first situation, also there is not the mode of dual power supply at present; Anti-reverse for main power source, existing anti-reverse technology carries out reverse connecting protection by diode, and this technology Problems existing is that the conduction voltage drop of diode is too large; when inputting big current, power consumption is large; efficiency reduces, and caloric value is large, and element may be caused to burn.The open report of the Redundancy power supply not having the reverse connection preventing about electric vehicle motor controller to pour in down a chimney so far.
Summary of the invention
The object of the present invention is to provide a kind of when reversal connection fault appears in main power source, main power source can be cut off in time and power, realize the protection to controller; When redundant power works, avoid electric current to pour in down a chimney into main power source, realize the redundant power supply circuit that the electric machine controller for motor vehicle reverse connection preventing of the protection of main power source is poured in down a chimney.
For achieving the above object, present invention employs following technical scheme: the redundant power supply circuit that a kind of electric machine controller for motor vehicle reverse connection preventing pours in down a chimney, comprise metal-oxide-semiconductor Q1, main power source is connect after its drain electrode is connected with the anode of diode D1, the negative electrode of diode D1 is connected with one end of resistance R3, the other end of resistance R3 is connected with the base stage of triode Q2, the grounded emitter of triode Q2, the collector electrode of triode Q2 is connected with the grid of metal-oxide-semiconductor Q1 by resistance R2, the source electrode of metal-oxide-semiconductor Q1 is connected with one end of redundant power, load respectively, the other end ground connection of load.
Also comprise voltage stabilizing didoe Z1, its anode is connected with the grid of metal-oxide-semiconductor Q1, and its negative electrode is connected with the source electrode of metal-oxide-semiconductor Q1.
Also comprise current-limiting resistance R1, its one end is connected with the anode of resistance R2, voltage stabilizing didoe Z1 respectively, and its other end is connected with the negative electrode of voltage stabilizing didoe Z1.
As shown from the above technical solution, the present invention can the electric power thus supplied of Real-Time Monitoring main power source, and when reversal connection has appearred in main power source, metal-oxide-semiconductor Q1 turns off output, prevent related device from still working under power supply trouble state, avoid device especially power device IGBT be damaged; When primary power source de-energizes, redundant power is started working, and now metal-oxide-semiconductor Q1 disconnects, and cuts off the circuit between redundant power and main power source, prevents redundant power from pouring in down a chimney into main power source.Visible, present invention, avoiding the pressure drop that adopts diode anti-reverse scheme to exist and the excessive problem of power consumption, and, realizing while redundant power powers, avoiding causing damage to main power source.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
The redundant power supply circuit that a kind of electric machine controller for motor vehicle reverse connection preventing pours in down a chimney, comprise metal-oxide-semiconductor Q1, main power source is connect after its drain electrode is connected with the anode of diode D1, the negative electrode of diode D1 is connected with one end of resistance R3, the other end of resistance R3 is connected with the base stage of triode Q2, the grounded emitter of triode Q2, the collector electrode of triode Q2 is connected with the grid of metal-oxide-semiconductor Q1 by resistance R2, the source electrode of metal-oxide-semiconductor Q1 respectively with redundant power, one end of load is connected, the other end ground connection of load, as shown in Figure 1, the base stage of triode Q2 is 1 pin, transmitting very 2 pin of triode Q2, current collection very 3 pin of triode Q2.
As shown in Figure 1, the present invention also comprises voltage stabilizing didoe Z1, and its anode is connected with the grid of metal-oxide-semiconductor Q1, and its negative electrode is connected with the source electrode of metal-oxide-semiconductor Q1, voltage stabilizing didoe Z1 punctures metal-oxide-semiconductor Q1 for preventing overtension between the grid of metal-oxide-semiconductor Q1 and source electrode, clamps the voltage at voltage stabilizing value.The present invention also comprises current-limiting resistance R1, and its one end is connected with the anode of resistance R2, voltage stabilizing didoe Z1 respectively, and its other end is connected with the negative electrode of voltage stabilizing didoe Z1.
Below in conjunction with Fig. 1, the present invention is further illustrated.
Under main power source normal operation, main power source is pressurizeed to the base stage of triode Q2 and emitter by diode D1 and resistance R3, triode Q2 conducting, resistance R2 connects the negative pole of main power source, now, the drain and gate of main power source to metal-oxide-semiconductor Q1 is powered, metal-oxide-semiconductor Q1 conducting, main power source is to load supplying, and redundant power does not work;
When main power source reversal connection, the voltage reversal of triode Q2, closes, the control voltage reversion of metal-oxide-semiconductor Q1, and metal-oxide-semiconductor Q1 closes output, and main power source current supply circuit turns off;
When main power circuit is without input, now redundant power starts power supply, and the source electrode of metal-oxide-semiconductor Q1 is the forward voltage of redundant power, and through resistance R1 and resistance R2 dividing potential drop, pressurize between the grid source electrode of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q1 closes; Simultaneously because diode D1 can not reverse-conducting, metal-oxide-semiconductor Q1 turns off, so electric current cannot pour in down a chimney into main power source via metal-oxide-semiconductor Q1 when redundant power works.
In sum, the present invention can the electric power thus supplied of Real-Time Monitoring main power source, and when reversal connection has appearred in main power source, metal-oxide-semiconductor Q1 turns off output, prevents related device from still working under power supply trouble state, avoid device especially power device IGBT be damaged; When primary power source de-energizes, redundant power is started working, and now metal-oxide-semiconductor Q1 disconnects, and cuts off the circuit between redundant power and main power source, prevents redundant power from pouring in down a chimney into main power source.
Claims (3)
1. the redundant power supply circuit that pours in down a chimney of an electric machine controller for motor vehicle reverse connection preventing, it is characterized in that: comprise metal-oxide-semiconductor Q1, main power source is connect after its drain electrode is connected with the anode of diode D1, the negative electrode of diode D1 is connected with one end of resistance R3, the other end of resistance R3 is connected with the base stage of triode Q2, the grounded emitter of triode Q2, the collector electrode of triode Q2 is connected with the grid of metal-oxide-semiconductor Q1 by resistance R2, the source electrode of metal-oxide-semiconductor Q1 is connected with one end of redundant power, load respectively, the other end ground connection of load.
2. the redundant power supply circuit that pours in down a chimney of electric machine controller for motor vehicle reverse connection preventing according to claim 1, it is characterized in that: also comprise voltage stabilizing didoe Z1, its anode is connected with the grid of metal-oxide-semiconductor Q1, and its negative electrode is connected with the source electrode of metal-oxide-semiconductor Q1.
3. the redundant power supply circuit that pours in down a chimney of electric machine controller for motor vehicle reverse connection preventing according to claim 1, it is characterized in that: also comprise current-limiting resistance R1, its one end is connected with the anode of resistance R2, voltage stabilizing didoe Z1 respectively, and its other end is connected with the negative electrode of voltage stabilizing didoe Z1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723856.1A CN104377685B (en) | 2014-12-04 | 2014-12-04 | The redundant power supply circuit that a kind of electric machine controller for motor vehicle reverse connection preventing pours in down a chimney |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410723856.1A CN104377685B (en) | 2014-12-04 | 2014-12-04 | The redundant power supply circuit that a kind of electric machine controller for motor vehicle reverse connection preventing pours in down a chimney |
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| CN104377685A true CN104377685A (en) | 2015-02-25 |
| CN104377685B CN104377685B (en) | 2017-12-19 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107069901A (en) * | 2017-06-22 | 2017-08-18 | 安徽锐能科技有限公司 | power supply circuit for battery management system |
| CN107492882A (en) * | 2017-08-24 | 2017-12-19 | 郑州云海信息技术有限公司 | More power supplys supply under single load Anti-leakage circuit and its system between more power supplys |
| CN108063437A (en) * | 2017-12-28 | 2018-05-22 | 广州爱易学智能信息科技有限公司 | The short-circuit protection circuit of classroom blackboard LED light strip |
| CN108123496A (en) * | 2016-11-30 | 2018-06-05 | 武汉通畅汽车电子照明有限公司 | A kind of binary channels supplies electric installation and electronic equipment |
| CN109009195A (en) * | 2018-07-26 | 2018-12-18 | 中国科学院深圳先进技术研究院 | The power supply system of silicon photomultiplier applied to PET system |
| CN110021993A (en) * | 2019-04-30 | 2019-07-16 | 合肥巨一动力系统有限公司 | A kind of anti-down fill system of the power supply of electric machine controller |
| CN110509772A (en) * | 2018-05-22 | 2019-11-29 | 联合汽车电子有限公司 | Accessory power supply |
| WO2020098709A1 (en) * | 2018-11-14 | 2020-05-22 | 深圳市道通智能航空技术有限公司 | Anti-reverse charging circuit of battery, and battery management system |
| CN111654010A (en) * | 2019-12-17 | 2020-09-11 | 联合汽车电子有限公司 | Method for preventing back-flow current |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108123496A (en) * | 2016-11-30 | 2018-06-05 | 武汉通畅汽车电子照明有限公司 | A kind of binary channels supplies electric installation and electronic equipment |
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| CN107492882A (en) * | 2017-08-24 | 2017-12-19 | 郑州云海信息技术有限公司 | More power supplys supply under single load Anti-leakage circuit and its system between more power supplys |
| CN108063437A (en) * | 2017-12-28 | 2018-05-22 | 广州爱易学智能信息科技有限公司 | The short-circuit protection circuit of classroom blackboard LED light strip |
| CN110509772A (en) * | 2018-05-22 | 2019-11-29 | 联合汽车电子有限公司 | Accessory power supply |
| CN109009195A (en) * | 2018-07-26 | 2018-12-18 | 中国科学院深圳先进技术研究院 | The power supply system of silicon photomultiplier applied to PET system |
| WO2020098709A1 (en) * | 2018-11-14 | 2020-05-22 | 深圳市道通智能航空技术有限公司 | Anti-reverse charging circuit of battery, and battery management system |
| CN110021993A (en) * | 2019-04-30 | 2019-07-16 | 合肥巨一动力系统有限公司 | A kind of anti-down fill system of the power supply of electric machine controller |
| CN111654010A (en) * | 2019-12-17 | 2020-09-11 | 联合汽车电子有限公司 | Method for preventing back-flow current |
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| CN104377685B (en) | 2017-12-19 |
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Address after: No.5821, Fanfu Avenue, Baohe District, Hefei City, Anhui Province Patentee after: Anhui Juyi Technology Co.,Ltd. Address before: Baohe Industrial District of Hefei City, Anhui province 230051 Shanghai Road East Dalian Road Patentee before: ANHUI JEE AUTOMATION EQUIPMENT Co.,Ltd. |
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Effective date of registration: 20230814 Address after: 230000 Shanghai Road East Dalian Road North Baohe Industrial Zone Hefei Anhui Province Patentee after: HEFEI JUYI POWER SYSTEM Co.,Ltd. Address before: No.5821, Fanfu Avenue, Baohe District, Hefei City, Anhui Province Patentee before: Anhui Juyi Technology Co.,Ltd. |