The invention discloses an MCU low-voltage redundant circuit system based on functional safety, which comprises a DCDC converter and a motor controller MCU, the DCDC converter and the motor controller MCU are electrically connected with a power battery, the motor controller MCU comprises a driving circuit and a control system, a main power supply loop and a redundant power supply loop are arranged between the driving circuit and the DCDC converter, and the control system is electrically connected with the driving circuit. The main power supply loop is provided with a storage battery, an auxiliary power supply and an EMC circuit, the main power supply loop is further provided with a main power supply loop switch, the redundant power supply loop is provided with a redundant power supply loop switch, and the control system is electrically connected with the DCDC converter, the main power supply loop, the redundant power supply loop, the redundant power supply loop switch and the main power supply loop switch. According to the invention, the cost is low, the function safety requirement of the MCU of the motor controller is ensured, and the safety and reliability are ensured.
本发明公开一种基于功能安全的MCU低压冗余电路系统,包括DCDC转换器和电机控制器MCU,DCDC转换器和电机控制器MCU与动力电池电连接,所述电机控制器MCU包括驱动电路、控制系统,驱动电路与DCDC转换器之间设有主供电回路和冗余供电回路,主供电回路上设有蓄电池、辅助电源、EMC电路,主供电回路上还设有主供电回路开关,冗余供电回路上设有冗余供电回路开关,控制系统分别与DCDC转换器、主供电回路、冗余供电回路、冗余供电回路开关以及主供电回路开关电连接。本发明成本低、保证了电机控制器MCU功能安全性要求,保证了安全可靠性。
Microprogrammed control unit (MCU) low-voltage redundant circuit system based on function safety
基于功能安全的MCU低压冗余电路系统
2024-04-19
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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