CN204230889U - The redundant power supply circuit that a kind of electric machine controller for motor vehicle reverse connection preventing pours in down a chimney - Google Patents
The redundant power supply circuit that a kind of electric machine controller for motor vehicle reverse connection preventing pours in down a chimney Download PDFInfo
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- CN204230889U CN204230889U CN201420750008.5U CN201420750008U CN204230889U CN 204230889 U CN204230889 U CN 204230889U CN 201420750008 U CN201420750008 U CN 201420750008U CN 204230889 U CN204230889 U CN 204230889U
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Abstract
The utility model relates to 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.The utility model 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.
Description
Technical field
The utility model 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.
Utility model content
The purpose of this utility model is to provide a kind of when reversal connection fault appears in main power source, can cut off main power source 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, the utility model have employed 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 respectively with redundant power, one end of load is connected, 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 utility model 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, the utility model avoids 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 utility model.
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 utility model 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 utility model 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 utility model is further described.
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 utility model 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420750008.5U CN204230889U (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 |
|---|---|---|---|
| CN201420750008.5U CN204230889U (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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| CN204230889U true CN204230889U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420750008.5U Active CN204230889U (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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377685A (en) * | 2014-12-04 | 2015-02-25 | 安徽巨一自动化装备有限公司 | Motor controller anti-reverse-connection and anti-back-flow redundancy power supply circuit for electric car |
| CN107093926A (en) * | 2017-06-27 | 2017-08-25 | 合肥尚硕新能源有限公司 | It is a kind of to the solar powered dual power supply switching circuit aided in |
| CN111969710A (en) * | 2020-07-28 | 2020-11-20 | 北京浪潮数据技术有限公司 | Main and standby power supply circuit and storage power supply equipment |
-
2014
- 2014-12-04 CN CN201420750008.5U patent/CN204230889U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377685A (en) * | 2014-12-04 | 2015-02-25 | 安徽巨一自动化装备有限公司 | Motor controller anti-reverse-connection and anti-back-flow redundancy power supply circuit for electric car |
| CN104377685B (en) * | 2014-12-04 | 2017-12-19 | 安徽巨一自动化装备有限公司 | The redundant power supply circuit that a kind of electric machine controller for motor vehicle reverse connection preventing pours in down a chimney |
| CN107093926A (en) * | 2017-06-27 | 2017-08-25 | 合肥尚硕新能源有限公司 | It is a kind of to the solar powered dual power supply switching circuit aided in |
| CN111969710A (en) * | 2020-07-28 | 2020-11-20 | 北京浪潮数据技术有限公司 | Main and standby power supply circuit and storage power supply equipment |
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| C14 | Grant of patent or utility model | ||
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| CP03 | Change of name, title or address | ||
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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 Dalian Road Patentee before: ANHUI JEE AUTOMATION EQUIPMENT Co.,Ltd. |