CN205304216U - A accelerator protection circuit for electric automobile - Google Patents
A accelerator protection circuit for electric automobile Download PDFInfo
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- CN205304216U CN205304216U CN201521137014.4U CN201521137014U CN205304216U CN 205304216 U CN205304216 U CN 205304216U CN 201521137014 U CN201521137014 U CN 201521137014U CN 205304216 U CN205304216 U CN 205304216U
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- npn audion
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Abstract
The utility model discloses an accelerator protection circuit for electric automobile, including NPN triode Q3, Q4, Q6, PNP triode Q2, Q5 cut -off diode D1 fast, neat nanotube Z1, resistance R1 R17, electric capacity C1 C4, pressure regulating chip U1 and hall chip U2, comparator U3. The utility model discloses the monitoring to the excessive pressure input is realized to the circuit to output and the normal different analog digital signal of during operation. Neat nanotube Z1 can not be opened in the output of normal during operation 12V_IN pin, U1 work, output 5V signal. U2 is along with the different voltage of transform output of accelerator accelerator pedal position, and so 0 5V's of ANA_OUT output voltage offers the motor drive control ware when nos excessive pressure export, steps on an allocation along with accelerator pedal as U2, and U2 output voltage is during above comparator U3B's reference voltage, and DIG_OUT exports a level and gives the motor drive control capability and judgement and leave. When the output of 12V_IN pin exceeded 24V, U1 and U2 were all out of work, and ANA_OUT and DIG_OUT be output not to realize the overvoltage protection of accelerator.
Description
Technical field
This utility model belongs to electric automobile field, particularly relates to a kind of accelerator for electric automobile and protects circuit.
Background technology
In recent years, in the face of energy-conservation and environmental protection dual-pressure, research direction was mainly locked in alternative fuel vehicle and two Main way of electric automobile by domestic and international various countries. And electric automobile has zero-emission, energy multiformity and the advantage such as easily controllable.
Electric automobile (Electricvehicle; EV) drive exchange (AC) or direct current (DC) motor to obtain the automobile of power as the power supply mainly utilizing battery, it is broadly divided into battery special electric automobile and mixed power electric car, battery special electric automobile carrys out drive motor by utilizing the power supply of battery, run out of power supply just to recharge, mixed power electric car carries out generating by runtime engine and battery is charged, and utilizes this electricity to drive electric motor to make automobile move.
Electric automobile makes vehicle move by controlling motor, thus controlling to change transport condition by motor in the process that vehicle travels, and controls acceleration or deceleration. The accelerator of electric automobile is most important on the impact that electric automobile is properly functioning, and accelerator exists the phenomenon that wiring is aging, thus entering easily caused by high pressure, causes potential danger.
Summary of the invention
The purpose of this utility model is in that for the deficiencies in the prior art, it is provided that circuit protected by a kind of accelerator for electric automobile.
The purpose of this utility model is achieved through the following technical solutions: circuit protected by a kind of accelerator for electric automobile, including NPN audion Q3, Q4, Q6, PNP triode Q2, Q5, quick-speed turning on-off diode D1, Zener Z1, resistance R1 R17, electric capacity C1 C4, pressure regulation chip U1, Hall chip U2, comparator U3. 12V input pin 12V_IN is connected with quick-speed turning on-off diode D1 anode, quick-speed turning on-off diode D1 negative electrode respectively with resistance R1, R4, the negative electrode of Zener Z1, the emitter stage of PNP triode Q2, the emitter stage of PNP triode Q5 is connected, the anode of Zener Z1 is connected with resistance R3, the other end of resistance R3 is connected with NPN audion Q3 base electricity level, the emitter stage of NPN audion Q3 is connected to the ground, the colelctor electrode of NPN audion Q3 respectively with the other end of resistance R4, the base electrode of NPN audion Q4 is connected, the emitter stage of NPN audion Q4 is connected with ground, the colelctor electrode of NPN audion Q4 is connected with resistance R5, the other end of resistance R5 is connected with the base electrode of PNP triode Q2, the colelctor electrode of PNP triode Q2 is connected with resistance R2, the other end of resistance R2 respectively with electric capacity C1, No. 1 input pin of pressure regulation chip U1 is connected, the other end of electric capacity C1 is connected to the ground, No. 2 of pressure regulation chip U1 are connected with ground with TAB pin, No. 3 output pins of pressure regulation chip U1 are 5V, with electric capacity C2, C3, No. 8 power pin of comparator U3A, No. 1 input pin of Hall chip U2, resistance R6, R7, R9, R13 is connected, the other end of resistance R6 is connected with 5V input pin 5V_IN, the other end of resistance R7 and resistance R8, R9, R10, No. 6 reverse input pins of comparator U3B are connected, the other end of R8 and R10 is connected with ground, No. 5 forward input pins of comparator U3B are connected with resistance R11, the other end of resistance R11 and resistance R12, No. 3 output pins of Hall chip U2 are connected, the other end of resistance R12 and resistance R17, electric capacity C4, output pin ANA_OUT is connected, resistance R17 and the electric capacity C4 other end are connected to the ground, No. 7 output pins of comparator U3B and the other end of resistance R13, the base electrode of NPN audion Q6 is connected, the emitter stage of NPN audion Q6 is connected with ground, the colelctor electrode of NPN audion Q6 is connected with resistance R14, the other end of resistance R14 is connected with the base electrode of PNP triode Q5, the colelctor electrode of PNP triode Q5 and resistance R15, R16 is connected, the other end of resistance R15 is connected with ground, the other end of resistance 16 is connected with output pin DIG_OUT, No. 4 pins of comparator U3A, No. 2 pins of Hall chip U2 are connected with ground.
The beneficial effects of the utility model are: the monitoring that overvoltage is inputted by this utility model circuit realiration, and analog and digital signals different when exporting from normal operation, thus realizing the overvoltage protection of accelerator.
Accompanying drawing explanation
Fig. 1 is this utility model circuit diagram for the accelerator protection circuit of electric automobile.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
As it is shown in figure 1, circuit protected by a kind of accelerator for electric automobile that this utility model provides, including NPN audion Q3, Q4, Q6, PNP triode Q2, Q5, quick-speed turning on-off diode D1, Zener Z1, resistance R1 R17, electric capacity C1 C4, pressure regulation chip U1, Hall chip U2, comparator U3. 12V input pin 12V_IN is connected with quick-speed turning on-off diode D1 anode, quick-speed turning on-off diode D1 negative electrode respectively with resistance R1, R4, the negative electrode of Zener Z1, the emitter stage of PNP triode Q2, the emitter stage of PNP triode Q5 is connected, the anode of Zener Z1 is connected with resistance R3, the other end of resistance R3 is connected with NPN audion Q3 base electricity level, the emitter stage of NPN audion Q3 is connected to the ground, the colelctor electrode of NPN audion Q3 respectively with the other end of resistance R4, the base electrode of NPN audion Q4 is connected, the emitter stage of NPN audion Q4 is connected with ground, the colelctor electrode of NPN audion Q4 is connected with resistance R5, the other end of resistance R5 is connected with the base electrode of PNP triode Q2, the colelctor electrode of PNP triode Q2 is connected with resistance R2, the other end of resistance R2 respectively with electric capacity C1, No. 1 input pin of pressure regulation chip U1 is connected, the other end of electric capacity C1 is connected to the ground, No. 2 of pressure regulation chip U1 are connected with ground with TAB pin, No. 3 output pins of pressure regulation chip U1 are 5V, with electric capacity C2, C3, No. 8 power pin of comparator U3A, No. 1 input pin of Hall chip U2, resistance R6, R7, R9, R13 is connected, the other end of resistance R6 is connected with 5V input pin 5V_IN, the other end of resistance R7 and resistance R8, R9, R10, No. 6 reverse input pins of comparator U3B are connected, the other end of R8 and R10 is connected with ground, No. 5 forward input pins of comparator U3B are connected with resistance R11, the other end of resistance R11 and resistance R12, No. 3 output pins of Hall chip U2 are connected, the other end of resistance R12 and resistance R17, electric capacity C4, output pin ANA_OUT is connected, resistance R17 and the electric capacity C4 other end are connected to the ground, No. 7 output pins of comparator U3B and the other end of resistance R13, the base electrode of NPN audion Q6 is connected, the emitter stage of NPN audion Q6 is connected with ground, the colelctor electrode of NPN audion Q6 is connected with resistance R14, the other end of resistance R14 is connected with the base electrode of PNP triode Q5, the colelctor electrode of PNP triode Q5 and resistance R15, R16 is connected, the other end of resistance R15 is connected with ground, the other end of resistance 16 is connected with output pin DIG_OUT, No. 4 pins of comparator U3A, No. 2 pins of Hall chip U2 are connected with ground. described U1 can adopt 7805 TAB, described U2 can adopt SS3503, and described U3 can adopt LM2904.
The work process of this utility model circuit is: the monitoring that overvoltage is inputted by this utility model circuit realiration, and analog and digital signals different when exporting from normal operation. During normal operation, the output of 12V_IN pin can not open Zener Z1, therefore Q3 turns off, and Q2, Q4 turn on, and pressure regulation chip U1 works, and export 5V signal.Hall chip U2 exports corresponding voltage along with the difference of accelerator pedal position, so when without overvoltage, ANA_OUT exports different voltage along with the difference of accelerator pedal position, when accelerator pedal steps on certain position, the 5 foot voltages of U3B are more than the reference voltage of 6 feet, therefore Q5, Q6 conducting, DIG_OUT output level gives motor drive controller work, and motor drive controller recognizes accelerator and has begun to action. When the output of 12V_IN pin is more than 24V, Zener Z1 turns on, and Q3 turns on, and Q2, Q4 turn off, and now pressure regulation chip U1 does not work, and Hall chip U2 does not work, and ANA_OUT and DIG_OUT does not export, thus realizing the overvoltage protection of accelerator.
Claims (1)
1. the accelerator protection circuit for electric automobile, it is characterized in that, including NPN audion Q3, Q4, Q6, PNP triode Q2, Q5, quick-speed turning on-off diode D1, Zener Z1, resistance R1 R17, electric capacity C1 C4, pressure regulation chip U1, Hall chip U2, comparator U3, 12V input pin 12V_IN is connected with quick-speed turning on-off diode D1 anode, quick-speed turning on-off diode D1 negative electrode respectively with resistance R1, R4, the negative electrode of Zener Z1, the emitter stage of PNP triode Q2, the emitter stage of PNP triode Q5 is connected, the anode of Zener Z1 is connected with resistance R3, the other end of resistance R3 is connected with NPN audion Q3 base electricity level, the emitter stage of NPN audion Q3 is connected to the ground, the colelctor electrode of NPN audion Q3 respectively with the other end of resistance R4, the base electrode of NPN audion Q4 is connected, the emitter stage of NPN audion Q4 is connected with ground, the colelctor electrode of NPN audion Q4 is connected with resistance R5, the other end of resistance R5 is connected with the base electrode of PNP triode Q2, the colelctor electrode of PNP triode Q2 is connected with resistance R2, the other end of resistance R2 respectively with electric capacity C1, No. 1 input pin of pressure regulation chip U1 is connected, the other end of electric capacity C1 is connected to the ground, No. 2 of pressure regulation chip U1 are connected with ground with TAB pin, No. 3 output pins of pressure regulation chip U1 are 5V, with electric capacity C2, C3, No. 8 power pin of comparator U3A, No. 1 input pin of Hall chip U2, resistance R6, R7, R9, R13 is connected, the other end of resistance R6 is connected with 5V input pin 5V_IN, the other end of resistance R7 and resistance R8, R9, R10, No. 6 reverse input pins of comparator U3B are connected, the other end of R8 and R10 is connected with ground, No. 5 forward input pins of comparator U3B are connected with resistance R11, the other end of resistance R11 and resistance R12, No. 3 output pins of Hall chip U2 are connected, the other end of resistance R12 and resistance R17, electric capacity C4, output pin ANA_OUT is connected, resistance R17 and the electric capacity C4 other end are connected to the ground, No. 7 output pins of comparator U3B and the other end of resistance R13, the base electrode of NPN audion Q6 is connected, the emitter stage of NPN audion Q6 is connected with ground, the colelctor electrode of NPN audion Q6 is connected with resistance R14, the other end of resistance R14 is connected with the base electrode of PNP triode Q5, the colelctor electrode of PNP triode Q5 and resistance R15, R16 is connected, the other end of resistance R15 is connected with ground, the other end of resistance 16 is connected with output pin DIG_OUT, No. 4 pins of comparator U3A, No. 2 pins of Hall chip U2 are connected with ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137014.4U CN205304216U (en) | 2015-12-30 | 2015-12-30 | A accelerator protection circuit for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137014.4U CN205304216U (en) | 2015-12-30 | 2015-12-30 | A accelerator protection circuit for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205304216U true CN205304216U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521137014.4U Expired - Fee Related CN205304216U (en) | 2015-12-30 | 2015-12-30 | A accelerator protection circuit for electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205304216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202380A (en) * | 2020-09-01 | 2021-01-08 | 杭州阔博科技有限公司 | Electric vehicle temperature protection method, electric vehicle controller and electric vehicle |
-
2015
- 2015-12-30 CN CN201521137014.4U patent/CN205304216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202380A (en) * | 2020-09-01 | 2021-01-08 | 杭州阔博科技有限公司 | Electric vehicle temperature protection method, electric vehicle controller and electric vehicle |
| CN112202380B (en) * | 2020-09-01 | 2022-05-20 | 杭州阔博科技有限公司 | Electric vehicle temperature protection method, electric vehicle controller and electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20171230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |