Abnormal out-of-control control circuit of hydrogen fuel automobile motor and control method thereof

Abstract

The invention relates to the technical field of hydrogen fuel cell control, in particular to an abnormal out-of-control control circuit of a hydrogen fuel automobile motor and a control method thereof. The system comprises a VCU, an FCU, a BMS, a PDU and an MCU. The output terminals of the BMS and the FCU are connected with the input terminal of the PDU; the output terminal of the PDU is connectedwith a power supply input terminal of the MCU; a first contactor and a second contactor are arranged in front of the output terminals of the BMS and the FCU respectively, a third contactor is arranged between the input terminal and the output terminal of the PDU, and control signal input terminals of the first contactor, the second contactor and the third contactor are all connected with a control signal output terminal of the VCU. The hydrogen fuel automobile motor abnormal out-of-control control circuit based on the vehicle control unit and contactor control is arranged, and the circuit structure is simple. Based on the control strategy of the circuit, damage to the FCU, the BMS and the PDU can be reduced as much as possible on the premise that vehicle safety and personal safety can beprotected when the electric drive system is out of control.

Description

technical field [0001] The invention relates to the technical field of hydrogen fuel cell control, in particular to a control circuit and a control method for the abnormal out-of-control motor of a hydrogen fuel vehicle. Background technique [0002] As the whole world vigorously advocates the development of hydrogen energy strategy, a wave of hydrogen fuel cell vehicles has been set off at home and abroad, and a large number of hydrogen fuel cell vehicles have been gradually developed and launched on the market. [0003] At present, the electric drive system used in the development of hydrogen fuel cell vehicles mostly uses the motor system of pure electric vehicles, which is directly installed on the vehicle for debugging, and the control strategy is the motor control mode of pure electric vehicles, which cannot be perfectly applied to the motor of fuel cell vehicles. Control, motor abnormal judgment and corresponding control and processing measures. The fuel cell vehicle...

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Problems solved by technology

[0003] At present, the electric drive system used in the development of hydrogen fuel cell vehicles mostly uses the motor system of pure electric vehicles, which is directly installed on the vehicle for debugging, and the control strategy is the motor control mode of pure electric vehicles, which cannot be perfectly applied to the motor of fuel cell vehicles. Control, motor abnormal judgment and corresponding control and treatment measures

The fuel cell vehicle system is complex, the electric stack system and the battery are used to provide power input for the motor, the control is more complex, and the industrial control of the motor is even worse. The stability and safety of the product cannot be guaranteed, which brings great harm to the safety of the vehicle. Certainty

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