Hydrogen fuel cell four-wheel hub motor drive external controller and control method

Abstract

The invention discloses a hydrogen fuel cell four-wheel hub motor drive external controller which comprises a processor, an angular velocity measurement module, a three-axial acceleration measurement module, a digital signal input module, an analog signal input module and a digital high-side output module, and is characterized in that the functions of a hub motor differential torque control TVCU and a vehicle control unit VCU are separated; the requirement for computing resource consumption of a controller chip is reduced, and the cost of the differential torque controller is saved; the functions of the controller are separated, so that the load unbalance risk on the CAN network is reduced; the control containing two control functions does not need to be developed again, and the development period is shortened; and the differential torque control of a hydrogen fuel cell full-power four-wheel hub motor driven automobile and a control function of the seamless integration of a whole automobile controller are realized for the first time.

Description

technical field [0001] The invention relates to the technical field of in-wheel motors, in particular to a hydrogen fuel cell four-wheel in-wheel motor-driven external controller and a control method. Background technique [0002] At present, hydrogen fuel cell full-power in-wheel motor distributed drive new energy vehicles all adopt the design method of redeveloping the vehicle controller and embedding in-wheel motor distributed drive torque vector control. In this design method, in-wheel motor distributed drive Torque vector control involves vehicle multi-body dynamics analysis and complex algorithm development and calculation, which consumes a lot of controller chip resources. In order to improve the chip computing capability of the vehicle VCU (Vehicle control unit, vehicle controller), it is necessary to increase the The cost of the controller; and integrating the vehicle controller and the torque vector controller into one controller increases the load pressure on the ...

AI Technical Summary

Problems solved by technology

[0002] At present, hydrogen fuel cell full-power in-wheel motor distributed drive new energy vehicles all adopt the design method of redeveloping the vehicle controller and embedding in-wheel motor distributed drive torque vector control. In this design method, in-wheel motor distributed drive Torque vector control involves vehicle multi-body dynamics analysis and complex algorithm development and calculation, which consumes a lot of controller chip resources. In order to improve the chip computing capability of the vehicle VCU (Vehicle control unit, vehicle controller), it is necessary to increase the The cost of the controller; and the integration of the vehicle controller and the torque vector controller into one controller increases the load pressure on the CAN (Controller Area Network, Controller Area Network) network, which is prone to load imbalance

In addition, for the hydrogen fuel cell extended-range power structure, compared with the traditional pure electric vehicle, the interactive signal with the VCU of the whole vehicle is added, and the communication pressure on the CAN network increases. At the same time, the distributed drive torque vector controller TVCU of the hub motor Combined with the VCU function of the vehicle controller and redeveloped, it increases the difficulty of controller software development and prolongs the development cycle

[0003] The braking energy recovery and driving anti-skid logic of four-wheel in-wheel motor-driven passenger cars are both in the theoretical research stage, and there is no mature and reliable solution. Therefore, the current four-wheel in-wheel motor-driven passenger cars do not have braking energy. Recovery and drive anti-skid function

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