阅读说明：本技术 一种电机控制装置及电机控制方法 (Motor control device and motor control method ) 是由 陶洪 于 2020-06-03 设计创作，主要内容包括：本申请提供一种电机控制装置及控制方法,其中,该电机控制装置与外接的高压电池和低压电池连接,包括：控制单元、功率模块驱动电源、驱动电路、逆变器,其中,低压电池分别与控制单元和功率模块驱动电源连接,控制单元与驱动电路连接、驱动电路连接逆变器,功率模块驱动电源与驱动电路连接,电机控制装置还包括母线取电单元和安全控制电路,其中,母线取电单元的一侧连接高压电池,另一侧分别连接控制单元、功率模块驱动电源和安全控制电路,控制单元与安全控制电路连接、安全控制电路与驱动电路连接。本申请提供的电机控制装置及控制方法,能够减少单点故障所导致的ASC功能失效,降低了硬件设计难度和成本。(The application provides a motor control device and a control method, wherein, the motor control device is connected with an external high-voltage battery and a low-voltage battery, and the motor control device comprises: the motor control device comprises a bus electricity taking unit and a safety control circuit, wherein one side of the bus electricity taking unit is connected with the high-voltage battery, the other side of the bus electricity taking unit is connected with the control unit, the power module driving power supply and the safety control circuit, the control unit is connected with the safety control circuit, and the safety control circuit is connected with the driving circuit. The motor control device and the motor control method can reduce ASC function failure caused by single-point faults, and reduce hardware design difficulty and cost.)

1. A motor control device is connected with an external high-voltage battery (01) and a low-voltage battery (02), and is characterized by comprising: control unit (04), power module drive power supply (05), drive circuit (06), dc-to-ac converter (07), low voltage battery (02) respectively with control unit (04) with power module drive power supply (05) are connected, control unit (04) with drive circuit (06) are connected inverter (07), power module drive power supply (05) with drive circuit (06) are connected, motor control device still includes that the generating line gets unit (08) and safety control circuit (09), wherein, the generating line is got one side of unit (08) and is connected high voltage battery (01), and the opposite side is connected respectively control unit (04), power module drive power supply (05) with safety control circuit (09), control unit (04) with safety control circuit (09) are connected, The safety control circuit (09) is connected to the drive circuit (06).

2. The motor control device according to claim 1, characterized in that the control unit comprises a master processor (010) and a slave processor (012), the master processor (010) and the slave processor (012) being connected to the safety control circuit (09), respectively.

3. The motor control device according to claim 2, characterized in that the low-voltage battery (02) is connected to the master processor (010) and the bus bar electricity taking unit (08) is connected to the slave processor (012).

4. The motor control device according to claim 3, characterized in that the low-voltage battery (02) is also connected with the slave processor (012), wherein the low-voltage battery (02) and the bus bar electricity taking unit (08) are connected with the slave processor (010) through diode groups (013, 014).

5. The motor control device according to any one of claims 1 to 4, wherein the power module driving power supply (05) comprises an upper bridge arm driving power supply (016) and a lower bridge arm driving power supply (017), wherein the output end of the bus bar electricity-taking unit (08) is connected with the lower bridge arm driving power supply (017), and the low-voltage battery (02) and the bus bar electricity-taking unit (08) supply power to the lower bridge arm driving power supply (017) through diode groups (013, 014).

6. The motor control arrangement according to any of claims 1-5, characterized in that the low-voltage battery (02) is further connected to the safety control circuit (09), wherein the low-voltage battery (02) and the busbar energizing unit (08) supply power to the safety control circuit (09) through a diode bank (013, 014).

7. The motor control device according to any one of claims 2 to 6, characterized by further comprising a motor rotation speed acquisition unit that connects the inverter (07) and the slave processor (012), respectively.

8. The motor control device according to claim 7, wherein the motor speed obtaining unit includes a line voltage zero-crossing detecting circuit (022) and an isolating chip (023).

9. The motor control apparatus according to claim 7, wherein the motor speed acquisition unit includes a phase current zero-cross detection circuit and a phase current sensor.

10. A vehicle characterized by comprising the motor control apparatus according to any one of claims 1 to 9.

11. A motor control method, comprising:

a slave processor of the motor receives a safety signal sent by a master processor of the motor;

the slave processor obtains the rotating speed information of the motor;

and the slave processor controls the motor to realize active short circuit or realize safe pipe closing according to the rotating speed information.

12. The motor control method according to claim 11, characterized in that:

the safety signal is used for indicating that the main processor loses power supply or has operation failure.

13. The motor control method according to claim 11 or 12, characterized in that: the slave processor controls the motor to realize active short circuit or safety shut-off according to the rotating speed information of the motor, and the method specifically comprises the following steps:

if the rotating speed of the motor is higher than or equal to a set threshold value, the slave processor controls the motor to carry out active short circuit,

and if the rotating speed of the motor is lower than the set threshold, the slave processor controls the motor to carry out safe shutdown.

14. The method of any of claims 11-13, wherein obtaining the speed information of the motor from the processor comprises:

the slave processor obtains the rotating speed information of the motor according to the motor rotating speed signal transmitted by the master processor for the last time; alternatively, the first and second electrodes may be,

and the slave processor acquires the rotating speed information of the motor by acquiring the phase current or the line voltage value of the inverter.

15. The motor control method according to claim 13, characterized in that:

and when the rotation speed of the motor is lower than the set threshold, controlling the motor to carry out safety shutdown.

16. The motor control method according to claim 15, characterized in that: and the slave processor acquires the motor rotating speed information by acquiring the phase current or the line voltage value of the inverter.