CN215513247U - Electronic P-gear locking system - Google Patents
Electronic P-gear locking system Download PDFInfo
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- CN215513247U CN215513247U CN202120418750.6U CN202120418750U CN215513247U CN 215513247 U CN215513247 U CN 215513247U CN 202120418750 U CN202120418750 U CN 202120418750U CN 215513247 U CN215513247 U CN 215513247U
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Abstract
The utility model discloses an electronic P-gear locking system. The electronic P-gear locking system comprises: the device comprises a mechanical module, a motor driving module, a position sensor module and an embedded power module; the mechanical module comprises a P gear locking and unlocking actuating mechanism; the motor is connected with the P gear locking and unlocking actuating mechanism; the motor driving module is electrically connected with the motor; the motor driving module comprises a control end, a feedback end and a motor driving module; the position sensor module is used for acquiring the state positions of the P gear locking and unlocking actuating mechanisms; the embedded power module comprises a motor driving signal output end, a motor state signal acquisition end and a sensor signal input end, wherein the motor driving signal output end and the motor signal acquisition end are respectively connected with a control end and a feedback end of the motor driving module, and the sensor signal input end is connected with the position sensor. The electronic P-gear locking system disclosed by the utility model achieves the effects of miniaturization and low cost.
Description
Technical Field
The embodiment of the utility model relates to the automobile manufacturing technology, in particular to an electronic P gear locking system.
Background
With the development of new energy automobile industry, electronic P-gear locking systems are increasingly well known and used.
In the existing electronic P-gear locking system, a controller and an actuator are two independent parts which are connected through a wire harness, wherein the actuator comprises a position sensing part, a motor and a mechanical structure, and the controller mainly comprises a power supply, an MCU, a motor drive and the like. Such electronic P-range locking systems tend to require large layout space, multiple wiring harnesses, and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electronic P-gear locking system, which aims to achieve the purposes of reducing wire harnesses and saving layout space and achieves the effects of more miniaturization and lower cost of the system.
An embodiment of the present invention provides an electronic P-gear locking system, including: the device comprises a mechanical module, a motor driving module, a position sensor module and an embedded power module; the mechanical module comprises a P gear locking and unlocking actuating mechanism; the motor is connected with the P gear locking and unlocking actuating mechanism; the motor driving module is electrically connected with the motor; the motor driving module comprises a control end and a feedback end, and is used for driving the motor to work according to a signal of the control end, collecting current flowing through the motor and outputting the collected signal through the feedback end; the position sensor module is used for acquiring the state positions of the P gear locking and unlocking actuating mechanism; the embedded power module comprises a motor driving signal output end, a motor state signal acquisition end and a sensor signal input end, wherein the motor driving signal output end and the motor signal acquisition end are respectively connected with a control end and a feedback end of the motor driving module, and the sensor signal input end is connected with the position sensor.
Optionally, the embedded power module further includes: the power supply end is used for being connected with the storage battery, and the communication end is connected with a peripheral vehicle control unit.
Optionally, the motor is a dc brushed two-phase motor.
Optionally, the position sensor module comprises a three-axis hall sensing circuit comprising an MLX90365LDC-ABD-000-RE chip.
Optionally, the embedded power module includes: the system comprises a power supply management unit, a communication unit, an H-bridge driving unit and a control unit; the power management unit is connected with a power end of the embedded power module and used for monitoring the state of the storage battery and providing power; the communication unit is connected with the communication end of the embedded power module, is used for connecting the vehicle control unit and receives or sends messages; the H-bridge driving unit is connected with the motor driving signal output end and the power management unit and used for providing a control signal for the motor driving module; the control unit is connected with a sensor signal input end and a motor state signal acquisition end of the embedded power module, the power management unit, the communication unit and the H-bridge driving unit, and is used for controlling the position sensor module, the power management unit and the H-bridge driving unit according to an instruction of the vehicle control unit.
Optionally, the embedded power module employs TLE9867QXW20 chip.
Optionally, the communication unit is a LIN communication unit.
Optionally, the motor driving module includes a first transistor, a second transistor, a third transistor, a fourth transistor, four first diodes, and a first resistor, the four first diodes are respectively connected between a first pole and a second pole of the first transistor, the second transistor, the third transistor, and the fourth transistor, the first transistor and the third transistor are respectively connected in series with the second transistor and the fourth transistor, two serial branches are connected in parallel, one end of the two serial branches after being connected in parallel is connected with one end of the first resistor, the other end of the two serial branches after being connected in parallel is used as a power supply end to be connected with a power management unit of the embedded power module, two ends of the first resistor are used as feedback ends of the motor driving module, and control electrodes of the first transistor, the second transistor, the third transistor, and the fourth transistor are used as control ends of the motor driving module, two ends of the first resistor are used as feedback ends of the motor driving module; the connection point of the first transistor and the second transistor is connected with a first motor terminal of the motor, and the connection point of the third transistor and the fourth transistor is connected with a second motor terminal of the motor.
Optionally, the first transistor, the second transistor, the third transistor, and the fourth transistor are all N-type MOS transistors.
According to the electronic P-gear locking system provided by the utility model, the embedded power module receives and analyzes the P-gear position signal acquired by the position sensor module, so that the state of the P-gear is judged, the embedded power module controls the working state of the motor driving module according to the state of the P-gear and a control instruction, the directions of control currents sent to the motor by different working states of the motor driving module are different, the motor is driven to rotate forwards and backwards to drive the mechanical module to realize P-gear locking and unlocking, the electronic P-gear locking system integrates various execution modules and control modules into one system, the embedded power module integrates various functions of control, fault diagnosis, cut-off protection and the like, the electronic P-gear locking system realizes the purposes of reducing wiring harnesses and saving layout space, and achieves the effects of more miniaturization and lower cost of the system.
Drawings
FIG. 1 is a schematic diagram of an electronic P-gear locking system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another electronic P-gear locking system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a motor driving module according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
An embodiment of the utility model provides an electronic P-gear locking system 100. Fig. 1 is a schematic diagram of an electronic P-gear locking system 100 according to an embodiment of the present invention, and referring to fig. 1, the electronic P-gear locking system 100 includes: a mechanical module 101, a motor 102, a motor driving module 103, a position sensor module 104 and an embedded power module 105; the mechanical module 101 includes a P-range lock and unlock actuator 106; the motor 102 is connected with a P gear locking and unlocking actuating mechanism 106; the motor driving module 103 is electrically connected with the motor 102; the motor driving module 103 comprises a control end 107 and a feedback end 108, and the motor driving module 103 is used for driving the motor 102 to work according to a signal of the control end 107, collecting current flowing through the motor 102, and outputting the collected signal through the feedback end 108; the position sensor module 104 is used for acquiring the state position of the P gear locking and unlocking actuator 106; the embedded power module 105 includes a motor driving signal output terminal 109, a motor state signal collecting terminal 110, and a sensor signal input terminal 111, wherein the motor driving signal output terminal 109 and the motor state signal collecting terminal 110 are respectively connected to a control terminal 107 and a feedback terminal 108 of the motor driving module 103, and the sensor signal input terminal 111 is connected to the position sensor module 104.
The mechanical module 101 is used for locking and unlocking the P gear, the P gear locking and unlocking actuator 106 is driven by a motor, and the mechanical module 101 further comprises a gear. The motor 102 is a driving mechanism for driving the mechanical module 101. For example, the motor 102 may be a dc brush two-phase motor, and an output shaft of the motor 102 is connected to a gear of the mechanical module 101, so as to drive the P-gear locking and unlocking actuator 106 to complete the P-gear locking and unlocking; the motor driving module 103 comprises an H-bridge circuit, the motor driving module 103 is used for controlling the working state of the H-bridge circuit according to the signal of the control terminal 107 so as to control the rotation direction of the motor 102, and the motor driving module 103 is also used for collecting the current flowing through the motor 102 and feeding the current back to the embedded power module 105; the position sensor module 104 is a position detection circuit including a position sensor, and is configured to acquire the state position of the P-gear lock and unlock actuator 106 of the mechanical module 101, and feed back the state position to the embedded power module 105; the embedded power module 105 is a master controller of the electronic P-gear locking system 100, and is configured to control working states of the motor driving module 103 and the position sensing module according to the control signal, and simultaneously receive and analyze signals collected by the motor driving module 103 and the position sensing module, and has functions of fault diagnosis and protection switching.
Illustratively, when the embedded power module 105 receives a signal of P-range locking, the embedded power module 105 receives and analyzes a position signal from the position sensor module 104, if the embedded power module 105 analyzes the position signal to obtain a conclusion that the P-range is locked, the embedded power module 105 does not perform any other action, if the embedded power module 105 analyzes the position signal to obtain a conclusion that the P-range is in an unlocked state, the embedded power module 105 controls an H-bridge circuit in the motor drive module 103 to be in a P-range locking working state, and drives a gear of the mechanical module 101 to rotate forward by controlling the motor 102 to rotate forward, so that the gear drives the P-range locking and unlocking execution mechanism 106 to complete P-range locking; correspondingly, when the embedded power module 105 receives a P-range unlocking signal, the embedded power module 105 receives and analyzes the position signal from the position sensor module 104, if the embedded power module 105 analyzes the position signal to obtain a conclusion that the P-range is in the unlocking state, the embedded power module 105 does not perform any other action, if the embedded power module 105 analyzes the position signal to obtain a conclusion that the P-range is locked, the embedded power module 105 controls the H-bridge circuit in the motor drive module 103 to be in the P-range unlocking working state, and controls the motor 102 to rotate reversely to drive the gear of the mechanical module 101 to rotate reversely, so that the gear drives the P-range locking and unlocking executing mechanism 106 to complete P-range unlocking.
In the working process of the electronic P-gear locking system 100, the motor driving module 103 detects the current flowing into the motor 102 and feeds the current back to the embedded power module 105, the embedded power module 105 monitors the state of the motor 102 by analyzing the received motor state signal, when the motor 102 is found to be in fault, the embedded power module 105 controls and controls the motor driving module 103 to stop working, no driving current is provided for the motor 102 any more, further loss caused by fault operation of the motor 102 is prevented, and the embedded power module 105 plays roles in fault diagnosis and cut-off protection.
In the electronic P-gear locking system provided by this embodiment, the embedded power module receives and analyzes a P-gear position signal acquired by the position sensor module, and further determines a P-gear state, the embedded power module controls a working state of the motor driving module according to the P-gear state and a control instruction, directions of control currents sent to the motor by different working states of the motor driving module are different, so that the motor is rotated forward and backward to drive the mechanical module to achieve P-gear locking and unlocking, the electronic P-gear locking system integrates multiple execution modules and control modules into one system, the embedded power module integrates multiple functions of control, fault diagnosis, cut-off protection and the like, the electronic P-gear locking system achieves the purposes of reducing wiring harnesses and saving layout space, and achieves the effects of more miniaturization and lower cost of the system.
With continuing reference to fig. 1, optionally, embedded power module 105 further comprises: the power supply end 112 is used for connecting a storage battery, and the communication end 113 is connected with a peripheral vehicle control unit.
Wherein, the storage battery may be an external battery for supplying power to the electronic P-gear locking system 100; the vehicle control unit is a core control component of the entire vehicle control system, and may send a P-gear locking or P-gear unlocking instruction to the embedded power module of the electronic P-gear locking system 100, and the embedded power module 105 controls the other modules to operate according to the P-gear locking or P-gear unlocking instruction, so as to implement P-gear locking or P-gear unlocking.
With continued reference to fig. 1, the motor 102 is optionally a dc brushed two-phase motor.
Wherein, the direct current brush two-phase motor has positive and negative rotation directions; the current flowing through the direct current brush two-phase motor can have two positive and negative directions corresponding to two different working states of an H-bridge circuit in the electric drive module, and the two positive and negative rotation directions respectively correspond to the output shafts of the direct current brush two-phase motor.
With continued reference to FIG. 1, optionally, the position sensor module 104 includes a three-axis Hall sensing circuit including an MLX90365LDC-ABD-000-RE chip.
The three-axis Hall sensing circuit is used for acquiring a P gear position signal, the MLX90365LDC-ABD-000-RE chip is a Hall sensor chip and a magnetic field sensor chip manufactured according to the Hall effect, and the corresponding P gear position can be acquired by sensing the change of the magnetic field of the mechanical module 101.
The P-gear locking system provided by this embodiment integrates multiple execution modules and control modules into one system, wherein the embedded power module integrates multiple functions such as control, fault diagnosis, and cut-off protection, and the electronic P-gear locking system achieves the purposes of reducing wiring harnesses and saving layout space, and achieves an effect of more miniaturization of the system.
Fig. 2 is a schematic diagram of another electronic P-range lock system 100 according to an embodiment of the present invention, referring to fig. 2, optionally, the embedded power module 105 includes: a power management unit 201, a communication unit 202, an H-bridge drive unit 203, and a control unit 204; the power management unit 201 is connected to the power end 112 of the embedded power module 105, and is used for monitoring the state of the storage battery and providing power; the communication unit 202 is connected to the communication terminal 113 of the embedded power module 105, and is used for connecting with a vehicle controller and receiving or sending messages; the H-bridge driving unit 203 is connected with the motor driving signal output end 109 and the power management unit 201 and is used for providing a control signal for the motor driving module 103; the control unit 204 is connected to the sensor signal input end 111 and the motor state signal acquisition end 110 of the embedded power module 105, the power management unit 201, the communication unit 202 and the H-bridge driving unit 203, and the control unit 204 is configured to control the position sensor module 104, the power management unit 201 and the H-bridge driving unit 203 according to an instruction of the vehicle controller.
The power management unit 201 performs conversion, overvoltage protection and overcurrent protection on the power provided by the storage battery, and can provide appropriate and stable power for the communication unit 202, the H-bridge driving unit 203, the control unit 204 and the position sensor module 104; the communication unit 202 is connected with the vehicle control unit and the control unit 204, and plays a role in transmitting control signals and feedback signals; the H-bridge driving unit 203 may control the operating state of the motor driving module 103 according to the control signal of the control unit 204; the control unit 204 may analyze whether the power supply state of the power management unit 201 is normal, may control the position sensor module 104 to acquire the P range position, then receives and analyzes a P range position signal fed back by the position sensor module 104, and further determines that the P range is locked or unlocked, and may also send a control signal to the H-bridge driving unit 203 and analyze a motor state signal fed back by the motor driving module 103, and determine whether the motor is working normally.
For example, after the vehicle control unit sends a P-gear locking signal, the communication unit 202 transmits the P-gear locking signal to the control unit 204, the control unit 204 first controls the position sensor module 104 to collect P-gear position information and feed the P-gear position information back to the control unit 204, and the control unit 204 analyzes the P-gear position information and determines a P-gear state; if the P-gear is locked, the control unit 204 feeds back a signal for feeding back that the P-gear is locked to the vehicle control unit through the communication unit 202, and the P-gear locking system does not perform other actions; if the P gear is in the unlocked state, the control unit 204 sends a P gear locking signal to the H-bridge drive unit 203, the H-bridge drive unit 203 controls the motor drive module 103 to be in a P gear locking working state, so that the current provided by the motor drive module 103 to the motor is positive, the motor output shaft is positive to drive the gear of the mechanical module to correspondingly rotate, and the P gear is locked, at this time, the position sensor module 104 collects the P gear position information again and sends the P gear position information to the control unit 204, the control unit 204 analyzes the result that the P gear is locked, and the communication unit 202 feeds back the information that the P gear is locked to the vehicle controller.
Similarly, after the vehicle control unit sends a P-gear unlocking signal, the communication unit 202 transmits the P-gear unlocking signal to the control unit 204, the control unit 204 first controls the position sensor module 104 to collect P-gear position information and feed the P-gear position information back to the control unit 204, and the control unit 204 analyzes the P-gear position information and judges the state of the P gear; if the P-gear is in the unlocked state, the control unit 204 feeds back a signal for feeding back that the P-gear is unlocked to the vehicle control unit through the communication unit 202, and the P-gear locking system does not perform other actions; if the P gear is locked, the control unit 204 sends a P gear unlocking signal to the H-bridge drive unit 203, the H-bridge drive unit 203 controls the motor drive module 103 to be in a P gear unlocking working state, so that the current provided by the motor drive module 103 to the motor is reversed, the output shaft of the motor rotates reversely to drive the gear of the mechanical module to rotate correspondingly, and the P gear is unlocked, at this time, the position sensor module 104 collects the P gear position information again and sends the P gear position information to the control unit 204, the control unit 204 analyzes the result that the P gear is unlocked, and feeds back the information that the P gear is unlocked to the vehicle control unit through the communication unit 202.
It should be noted that "forward rotation" and "reverse rotation" in this embodiment are only relative rotation directions, where "forward direction" corresponds to the P-gear locking direction and "reverse direction" corresponds to the P-gear unlocking direction, and vice versa, and are not intended to limit the scope of the present invention.
In the electronic P-gear locking system provided in this embodiment, the power management unit, the H-bridge driving unit, the communication unit, and the control unit are integrated in the embedded power module, the power management unit has functions of supplying power and diagnosing a power failure, the communication unit transmits a message between the vehicle controller and the control unit, the control unit analyzes the received message and controls the operating states of the H-bridge driving unit and the position sensing module, and monitors the operating states of the motor, the power management unit, and the position sensing module to prevent damage to equipment caused by a failure, the embedded power module integrated with multiple units reduces the wiring harness usage amount of the P-gear locking system, saves the layout space, and achieves the effects of more miniaturization and lower cost of the P-gear locking system.
With continued reference to fig. 2, the embedded power module 105 optionally employs TLE9867QXW20 chips.
With continued reference to fig. 2, optionally, the communication unit 202 is a LIN communication unit.
The LIN communication unit is low-cost serial communication equipment based on a universal asynchronous receiver/transmitter/serial interface.
In the electronic P-gear locking system provided in this embodiment, the TLE9867QXW20 chip is used in the embedded power module, so that the layout space of the P-gear locking system can be further reduced, and the communication unit is a single-wire-transmission LIN communication unit, so that the structure is simple, the complexity of a wire harness can be further reduced, and the cost is reduced.
Fig. 3 is a schematic diagram of a motor driving module 103 according to an embodiment of the present invention, referring to fig. 2, optionally, the motor driving module 103 includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, four first diodes Q and a first resistor R1, the four first diodes Q are respectively connected between a first pole and a second pole of the first transistor T1, the second transistor T2, the third transistor T3 and the fourth transistor T4, the first transistor T1 and the third transistor T3 are respectively connected in series with the second transistor T2 and the fourth transistor T4, the two serial branches are connected in parallel, one end of the two serial branches after being connected in parallel is connected with one end of the first resistor R1, the other end of the two serial branches after being connected in parallel is used as a power supply terminal to be connected with a power supply management unit of the embedded power module, the two ends of the first resistor R1 are used as feedback terminals of the motor driving module 103, the control electrodes of the first transistor T1, the second transistor T2, the third transistor T3 and the fourth transistor T4 are used as the control end of the motor driving module 103, and the two ends of the first resistor R1 are used as the feedback end of the motor driving module 103; a connection point of the first transistor T1 and the second transistor T2 is connected to a first motor terminal of the motor, and a connection point of the third transistor T3 and the fourth transistor T4 is connected to a second motor terminal of the motor.
Illustratively, when the H-bridge driving unit receives a P-gear locking signal from the control unit, the H-bridge driving unit controls the first transistor T1 and the fourth transistor T4 to be turned on, controls the second transistor T2 and the third transistor T3 to be turned off, at this time, current flows into the motor from the first motor terminal, and flows out of the motor from the second motor terminal, the output shaft of the motor rotates forward to drive the gear of the mechanical module to rotate correspondingly, so as to lock the P gear, at this time, the position sensor module collects position information of the P gear again and sends the position information to the control unit, and the control unit analyzes the result that the P gear is locked and feeds back the information that the P gear is locked to the vehicle controller through the communication unit; similarly, when the H-bridge driving unit receives a P-gear unlocking signal from the control unit, the H-bridge driving unit controls the second transistor T2 and the third transistor T3 to be turned on, controls the first transistor T1 and the fourth transistor T4 to be turned off, at this time, current flows into the motor from the second motor terminal, and flows out of the motor from the first motor terminal, the output shaft of the motor rotates reversely to drive the gear of the mechanical module to rotate correspondingly, so as to unlock the P gear, at this time, the position sensor module collects the P gear position information again and sends the P gear position information to the control unit, and the control unit analyzes the result that the P gear is unlocked and feeds back the information that the P gear is unlocked to the vehicle controller through the communication unit; meanwhile, the control unit is connected with the two ends of the first resistor R1, the motor state signals can be fed back to the control unit, the motor state signals comprise current values passing through the motor, the control unit can monitor the working state of the motor according to the collected motor state signals, and equipment damage caused by motor faults is prevented.
In the electronic P-gear locking system provided in this embodiment, the motor driving module 103 provides currents in different directions for the motor through different conducting combinations of the transistors, and the first resistor R1 is used to collect the current flowing through the motor, so as to monitor the working state of the motor by the controller, thereby achieving the effect of high reliability of the electronic P-gear locking system.
With continued reference to fig. 3, optionally, the first transistor T1, the second transistor T2, the third transistor T3 and the fourth transistor T4 are all N-type MOS transistors.
The electronic P-gear locking system provided in the embodiment integrates multiple execution modules and control modules into one system, wherein the embedded power module integrates multiple functions of control, fault diagnosis, cut-off protection and the like, the motor driving module can also acquire the working state of the motor, so as to prevent equipment damage caused by motor faults, the loss of the N-type MOS transistor is small, the system achieves the purposes of reducing wiring harnesses, saving layout space, reducing energy consumption and fault diagnosis, and achieves the effects of system miniaturization, simplification, low energy consumption and high reliability.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. An electronic P-range lock system, comprising:
the mechanical module comprises a P gear locking and unlocking actuating mechanism;
the motor is connected with the P gear locking and unlocking actuating mechanism;
the motor driving module is electrically connected with the motor; the motor driving module comprises a control end and a feedback end, and is used for driving the motor to work according to a signal of the control end, collecting current flowing through the motor and outputting the collected signal through the feedback end;
the position sensor module is used for acquiring the state positions of the P gear locking and unlocking actuating mechanism;
the embedded power module comprises a motor driving signal output end, a motor state signal acquisition end and a sensor signal input end, wherein the motor driving signal output end and the motor state signal acquisition end are respectively connected with a control end and a feedback end of the motor driving module, and the sensor signal input end is connected with the position sensor.
2. The electronic P-range locking system of claim 1, wherein the embedded power module further comprises: the power supply end is used for being connected with the storage battery, and the communication end is connected with a peripheral vehicle control unit.
3. The electronic P-range locking system of claim 1, wherein the motor is a dc brushed two-phase motor.
4. The electronic P-range locking system of claim 1, wherein the position sensor module comprises a three-axis Hall sensing circuit comprising an MLX90365LDC-ABD-000-RE chip.
5. The electronic P-range locking system of claim 1, wherein the embedded power module comprises:
the power management unit is connected with the power end of the embedded power module and used for monitoring the state of the storage battery and providing power;
the communication unit is connected with the communication end of the embedded power module, is used for connecting the whole vehicle controller and receives or sends messages;
the H-bridge driving unit is connected with the motor driving signal output end and the power management unit and is used for providing a control signal for the motor driving module;
and the control unit is connected with a sensor signal input end and a motor state signal acquisition end of the embedded power module, the power management unit, the communication unit and the H-bridge driving unit, and is used for controlling the position sensor module, the power management unit and the H-bridge driving unit according to an instruction of the vehicle control unit.
6. The electronic P-gear locking system of claim 1, wherein the embedded power module employs TLE9867QXW20 chip.
7. The electronic P-file locking system of claim 5, wherein the communication unit is a LIN communication unit.
8. The electronic P-gear locking system of claim 5, wherein the motor driving module comprises a first transistor, a second transistor, a third transistor, a fourth transistor, four first diodes and a first resistor, the four first diodes are respectively connected between the first and second poles of the first transistor, the second transistor, the third transistor and the fourth transistor, the first transistor and the third transistor are respectively connected in series with the second transistor and the fourth transistor, two serial branches are connected in parallel, one end of the two serial branches after being connected in parallel is connected to one end of the first resistor, the other end of the two serial branches after being connected in parallel is used as a power supply end to be connected to the power management unit of the embedded power module, and two ends of the first resistor are used as feedback ends of the motor driving module, control electrodes of the first transistor, the second transistor, the third transistor and the fourth transistor are used as control ends of the motor driving module, and two ends of the first resistor are used as feedback ends of the motor driving module; the connection point of the first transistor and the second transistor is connected with a first motor terminal of the motor, and the connection point of the third transistor and the fourth transistor is connected with a second motor terminal of the motor.
9. The electronic P-gear locking system according to claim 8, wherein the first transistor, the second transistor, the third transistor and the fourth transistor are all N-type MOS transistors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120418750.6U CN215513247U (en) | 2021-02-25 | 2021-02-25 | Electronic P-gear locking system |
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| CN202120418750.6U CN215513247U (en) | 2021-02-25 | 2021-02-25 | Electronic P-gear locking system |
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