CN207719799U - A kind of electric motor of automobile circuit for preventing reverse connection of power supply - Google Patents
A kind of electric motor of automobile circuit for preventing reverse connection of power supply Download PDFInfo
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- CN207719799U CN207719799U CN201820075277.4U CN201820075277U CN207719799U CN 207719799 U CN207719799 U CN 207719799U CN 201820075277 U CN201820075277 U CN 201820075277U CN 207719799 U CN207719799 U CN 207719799U
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Abstract
The utility model discloses a kind of electric motor of automobile circuit for preventing reverse connection of power supply, is related to automobile technical field, and the electric motor of automobile circuit for preventing reverse connection of power supply includes：PMOS tube Q10, diode D1, resistance R56, resistance R57, capacitance C46, capacitance C47, capacitance C50, triode Q17；The drain electrode of the PMOS tube Q10 meets output end KL30；The source S of the PMOS tube Q10 is coupled with the cathode of diode D1, one end of resistance R56, one end of capacitance C46, one end of capacitance C47, one end of capacitance C50 and input terminal MOTOR；The other end of capacitance C46, capacitance C47 and capacitance C50 are grounded respectively；The grid of the PMOS tube Q10 connects the other end of the anode of diode D1, resistance R56 respectively；The collector of the triode Q17 is connected to the grid of the PMOS tube Q10 by resistance R57, and emitter ground connection, base stage are connected to control terminal MOTOR_EN.Circuit provided by the utility model can bear larger motor rotation blockage electric current.
Description
Technical field
The utility model is related to automobile technical field more particularly to a kind of electric motor of automobile circuit for preventing reverse connection of power supply.
Background technology
Higher and higher with the degree of automation of automobile, the application of motor in the car is also more and more extensive.In automobile
Controller controls executing agency by motor and realizes various functions.
Currently, in automobile the reverse-connection preventing circuit of motor be not power it is too small be exactly that volume is too big, it is difficult in a limited space
Middle placement.
For example, the locked rotor current of motor is 39A, if done using common rectifier diode anti-reverse, it is difficult to bear this
Big electric current.
Invention content
The technical problem to be solved by the utility model is to, in the prior art, the reverse-connection preventing circuit of motor in automobile
Be not power it is too small be exactly that volume is too big.
The utility model solves its technical problem, it is proposed that a kind of electric motor of automobile circuit for preventing reverse connection of power supply.The automobile electricity
Electromechanical source reverse-connection preventing circuit includes：
PMOS tube Q10, diode D1, resistance R56, resistance R57, capacitance C46, capacitance C47, capacitance C50, triode Q17；
The drain electrode of the PMOS tube Q10 meets output end KL30；
The source S of the PMOS tube Q10 be coupled with the cathode of diode D1, one end of resistance R56, capacitance C46 one
End, one end of capacitance C47, one end of capacitance C50 and input terminal MOTOR；Capacitance C46, capacitance C47 and capacitance C50's is another
One end is grounded respectively；
The grid of the PMOS tube Q10 connects the other end of the anode of diode D1, resistance R56 respectively；
The collector of the triode Q17 is connected to the grid of the PMOS tube Q10 by resistance R57, emitter ground connection,
Base stage is connected to control terminal MOTOR_EN.
Further, the PMOS tube Q10 is P-channel enhancement type FET.
Further, the conducting internal resistance of the PMOS tube is 11M Ω.
Further, the diode D1 is zener diode.
Electric motor of automobile circuit for preventing reverse connection of power supply provided by the utility model, by using metal-oxide-semiconductor as reverse-connection preventing circuit,
Metal-oxide-semiconductor bears larger electric current, such as the locked rotor current of motor.In addition, the controller of automobile by control metal-oxide-semiconductor conducting with
Cut-off can close motor driving when stall occurs for motor.
Description of the drawings
Fig. 1 is a kind of electric motor of automobile circuit for preventing reverse connection of power supply that the utility model embodiment one provides.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
It is also understood that specific embodiment described herein is used only for understanding the utility model, it is not used to limit
The utility model.
Embodiment one
The present embodiment provides a kind of structural schematic diagram of automobile shift signal detection circuit, structural schematic diagram such as Fig. 1 institutes
Show, details are as follows：
The electric motor of automobile circuit for preventing reverse connection of power supply includes：
PMOS tube Q10, diode D1, resistance R56, resistance R57, capacitance C46, capacitance C47, capacitance C50, triode Q17；
The drain electrode of the PMOS tube Q10 meets output end KL30；
The source S of the PMOS tube Q10 be coupled with the cathode of diode D1, one end of resistance R56, capacitance C46 one
End, one end of capacitance C47, one end of capacitance C50 and input terminal MOTOR；Capacitance C46, capacitance C47 and capacitance C50's is another
One end is grounded respectively；
The grid of the PMOS tube Q10 connects the other end of the anode of diode D1, resistance R56 respectively；
The collector of the triode Q17 is connected to the grid of the PMOS tube Q10 by resistance R57, emitter ground connection,
Base stage is connected to control terminal MOTOR_EN.
Further, the PMOS tube Q10 is P-channel enhancement type FET.
Further, the conducting internal resistance of the PMOS tube is 11M Ω.
Further, the diode D1 is zener diode.
The input terminal MOTOR is power supply.
Control terminal MOTOR_EN is connected to the base stage of triode Q17, and then controls the conducting and cut-off of triode Q17.
When control terminal MOTOR_EN offer driving voltages, triode Q17 can be made to be connected.At this point, being provided in input terminal MOTOR
The voltage of input voltage U1, the source S of the PMOS tube Q10 are U1.Due to triode ON, resistance R57 is believed that and directly connects
Ground, electric current can flow to ground terminal by resistance R56 and resistance R57, and the voltage at the grid G of PMOS tube Q10 is U2, the voltage
U2 is less than voltage U1, when U1-U2 meets the conducting voltage of PMOS tube Q10, the PMOS tube Q10 conductings, and output end KL30 outputs
Voltage.
The voltage of the output end KL30 outputs is used to drive the motor of automobile.
Since the electric current that metal-oxide-semiconductor can be born is larger, when stall occurs for motor, it is not easy to impaired.In addition, one can be set
Current threshold can control the cut-off of PMOS tube Q10 when controller by control terminal MOTOR_EN, to close output
Hold the output of KL30.
Specifically, the control terminal MOTOR_EN is connected to the controller of automobile, and controller exports low level to control terminal
MOTOR_EN, so that the triode Q17 ends, grid G and the source S voltage value having the same of PMOS tube Q10, PMOS tube
Q10 ends, and output end KL30 outputs are closed.
Further, the motor is direct current generator.
Electric motor of automobile circuit for preventing reverse connection of power supply provided by the utility model, by using metal-oxide-semiconductor as reverse-connection preventing circuit,
Metal-oxide-semiconductor bears larger electric current, such as the locked rotor current of motor.In addition, the controller of automobile by control metal-oxide-semiconductor conducting with
Cut-off can close motor driving when stall occurs for motor.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (4)
1. a kind of electric motor of automobile circuit for preventing reverse connection of power supply, which is characterized in that including：PMOS tube Q10, diode D1, resistance R56,
Resistance R57, capacitance C46, capacitance C47, capacitance C50, triode Q17；
The drain electrode of the PMOS tube Q10 meets output end KL30；
The source S of the PMOS tube Q10 is coupled with the cathode of diode D1, one end of resistance R56, one end of capacitance C46, electricity
Hold one end of C47, one end of capacitance C50 and input terminal MOTOR；The other end of capacitance C46, capacitance C47 and capacitance C50 point
It is not grounded；
The grid of the PMOS tube Q10 connects the other end of the anode of diode D1, resistance R56 respectively；
The collector of the triode Q17 is connected to the grid of the PMOS tube Q10, emitter ground connection, base stage by resistance R57
It is connected to control terminal MOTOR_EN.
2. electric motor of automobile circuit for preventing reverse connection of power supply according to claim 1, which is characterized in that the PMOS tube Q10 is P ditches
The enhanced field-effect tube in road.
3. electric motor of automobile circuit for preventing reverse connection of power supply according to claim 1, which is characterized in that in the conducting of the PMOS tube
Resistance is 11M Ω.
4. electric motor of automobile circuit for preventing reverse connection of power supply according to claim 1, which is characterized in that the diode D1 is voltage stabilizing
Diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820075277.4U CN207719799U (en) | 2018-01-17 | 2018-01-17 | A kind of electric motor of automobile circuit for preventing reverse connection of power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820075277.4U CN207719799U (en) | 2018-01-17 | 2018-01-17 | A kind of electric motor of automobile circuit for preventing reverse connection of power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207719799U true CN207719799U (en) | 2018-08-10 |
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ID=63052049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820075277.4U Active CN207719799U (en) | 2018-01-17 | 2018-01-17 | A kind of electric motor of automobile circuit for preventing reverse connection of power supply |
Country Status (1)
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| CN (1) | CN207719799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565836A (en) * | 2018-01-17 | 2018-09-21 | 宁波高发汽车控制***股份有限公司 | A kind of electric motor of automobile circuit for preventing reverse connection of power supply |
-
2018
- 2018-01-17 CN CN201820075277.4U patent/CN207719799U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565836A (en) * | 2018-01-17 | 2018-09-21 | 宁波高发汽车控制***股份有限公司 | A kind of electric motor of automobile circuit for preventing reverse connection of power supply |
| CN108565836B (en) * | 2018-01-17 | 2024-05-07 | 宁波高发汽车控制***股份有限公司 | Reverse connection preventing circuit for automobile motor power supply |
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