CN-224218294-U - Braking motor driving circuit, electromechanical braking system and vehicle

Abstract

The utility model provides a brake motor driving circuit, an electronic mechanical brake system and a vehicle, wherein the output end of a first power supply is respectively connected with the power supply end of a control chip and the power supply end of a first three-phase driving module, the output end of a second power supply is respectively connected with the power supply end of the control chip and the power supply end of a second three-phase driving module, the output end of the control chip is respectively connected with the control end of the first three-phase driving module and the control end of the second three-phase driving module, the output end of the first three-phase driving module is connected with a first three-phase interface of a brake motor, and the output end of the second three-phase driving module is connected with a second three-phase interface of the brake motor. Through setting up the brake motor to drive through two three-phase drive modules respectively for the required electric current that provides of single three-phase drive module is less, has reduced the electric current bearing requirement to the pencil, consequently, can reduce the wire footpath of pencil, thereby makes the cost decline, and guarantees the reliability of connector.

Inventors

• Request for anonymity
• Request for anonymity
• Request for anonymity

Assignees

• 立昇智能科技(上海)有限公司

Dates

Publication Date

20260508

Application Date

20250414

Claims (10)

1. 1. The brake motor driving circuit is characterized by being connected with a brake motor, and comprises a control chip, a power supply and a three-phase driving module, wherein the power supply comprises a first power supply and a second power supply, and the three-phase driving module comprises a first three-phase driving module and a second three-phase driving module, and the brake motor driving circuit comprises a control chip, a power supply and a three-phase driving module, wherein: The output end of the first power supply is respectively connected with the power supply end of the control chip and the power supply end of the first three-phase driving module; The output end of the second power supply is respectively connected with the power supply end of the control chip and the power supply end of the second three-phase driving module; The output end of the control chip is respectively connected with the control end of the first three-phase driving module and the control end of the second three-phase driving module; The output end of the first three-phase driving module is connected with a first three-phase interface of the brake motor, and the output end of the second three-phase driving module is connected with a second three-phase interface of the brake motor.
2. 2. The brake motor driving circuit according to claim 1, wherein the three-phase driving module includes a motor driving chip and a voltage converting unit, wherein: the power supply end of the motor driving chip and the power supply end of the voltage conversion unit are respectively connected with the corresponding output end of the power supply; The control end of the motor driving chip is connected with the output end of the control chip, the output end of the motor driving chip is connected with the control end of the voltage conversion unit, and the output end of the voltage conversion unit is connected with the corresponding three-phase interface of the brake motor; The output end of the voltage conversion unit is also connected with the feedback end of the motor driving chip.
3. 3. The brake motor drive circuit of claim 1, further comprising a first diode and a second diode, wherein: The output end of the first power supply is connected with the power supply end of the control chip in the forward direction through the first diode; And the output end of the second power supply is connected with the power supply end of the control chip in the forward direction through the second diode.
4. 4. The brake motor drive circuit of claim 1, further comprising a power management chip, wherein: The input end of the power management chip is connected with the output end of the first power supply and the output end of the second power supply respectively, and the output end of the power management chip is connected with the power supply end of the control chip.
5. 5. The brake motor drive circuit of claim 1, further comprising a motor position detection module, wherein: The detection end of the motor position detection module is connected with the brake motor, and the output end of the motor position detection module is connected with the detection end of the control chip.
6. 6. The brake motor drive circuit of claim 1, further comprising a motor current detection module, wherein: The detection end of the motor current detection module is connected with the brake motor, and the output end of the motor current detection module is connected with the detection end of the control chip.
7. 7. The brake motor driving circuit according to claim 1, wherein the brake motor is a six-phase motor or two three-phase motors.
8. 8. An electro-mechanical brake system comprising a brake motor and a brake motor drive circuit as claimed in any one of claims 1 to 7.
9. 9. The electro-mechanical brake system of claim 8, wherein the electro-mechanical brake system is disposed relative to a brake disc, the electro-mechanical brake system further comprising a reduction mechanism, a piston, a brake caliper, wherein: The brake disc is arranged between the two brake calipers, the piston is arranged on one side, away from the brake disc, of one brake caliper, and the movement direction of the piston faces the brake disc; the piston, the piston speed reducing mechanism, the speed reducing mechanism and the braking motor are sequentially connected.
10. 10. A vehicle comprising a brake disc and an electromechanical brake system according to claim 8 or 9.

Description

Braking motor driving circuit, electromechanical braking system and vehicle Technical Field The utility model relates to the field of vehicle braking, in particular to a braking motor driving circuit, an electronic mechanical braking system and a vehicle. Background The sum of the power requirements of the four-wheel EMB (Electro-mechanical brake) motor is above 1200W, and the current requirement is larger for a single wheel, particularly for a front wheel, under a 12V automobile power supply system, the wire diameter of a wire harness between a power supply device and a controller needs to be set larger in order to bear large current, so that the cost is increased and the reliability of a connector is poor. Disclosure of utility model The utility model mainly aims to provide a brake motor driving circuit, an electronic mechanical brake system and a vehicle, and aims to solve the problem that a wire harness between a power supply device of the brake system and a controller in the prior art is large in wire diameter. The utility model provides a brake motor driving circuit, which is connected with a brake motor, wherein the brake motor driving circuit comprises a control chip, a power supply and a three-phase driving module, the power supply comprises a first power supply and a second power supply, the three-phase driving module comprises a first three-phase driving module and a second three-phase driving module, and the brake motor driving circuit comprises a control chip, a power supply and a three-phase driving module, wherein: The output end of the first power supply is respectively connected with the power supply end of the control chip and the power supply end of the first three-phase driving module; The output end of the second power supply is respectively connected with the power supply end of the control chip and the power supply end of the second three-phase driving module; The output end of the control chip is respectively connected with the control end of the first three-phase driving module and the control end of the second three-phase driving module; The output end of the first three-phase driving module is connected with a first three-phase interface of the brake motor, and the output end of the second three-phase driving module is connected with a second three-phase interface of the brake motor. Optionally, the three-phase driving module comprises a motor driving chip and a voltage conversion unit, wherein: the power supply end of the motor driving chip and the power supply end of the voltage conversion unit are respectively connected with the corresponding output end of the power supply; The control end of the motor driving chip is connected with the output end of the control chip, the output end of the motor driving chip is connected with the control end of the voltage conversion unit, and the output end of the voltage conversion unit is connected with the corresponding three-phase interface of the brake motor; The output end of the voltage conversion unit is also connected with the feedback end of the motor driving chip. Optionally, the brake motor driving circuit further comprises a first diode and a second diode, wherein: The output end of the first power supply is connected with the power supply end of the control chip in the forward direction through the first diode; And the output end of the second power supply is connected with the power supply end of the control chip in the forward direction through the second diode. Optionally, the brake motor driving circuit further comprises a power management chip, wherein: The input end of the power management chip is connected with the output end of the first power supply and the output end of the second power supply respectively, and the output end of the power management chip is connected with the power supply end of the control chip. Optionally, the brake motor driving circuit further comprises a motor position detection module, wherein: The detection end of the motor position detection module is connected with the brake motor, and the output end of the motor position detection module is connected with the detection end of the control chip. Optionally, the braking motor is a six-phase motor or two three-phase motors. In addition, in order to achieve the above object, the present utility model also provides an electromechanical brake system including a brake motor and a brake motor driving circuit as described above. Optionally, the electromechanical brake system is arranged opposite to the brake disc, and further comprises a speed reducing mechanism, a piston and a brake caliper, wherein: The brake disc is arranged between the two brake calipers, the piston is arranged on one side, away from the brake disc, of one brake caliper, and the movement direction of the piston faces the brake disc; the piston, the piston speed reducing mechanism, the speed reducing mechanism and the braking motor are sequentially connected. In addition, in order to