Regenerative braking torque distribution method of all-wheel drive hybrid power system

Abstract

The invention relates to a regenerative braking torque distribution method of an all-wheel drive hybrid power system and belongs to the field of new energy automobiles. A finished automobile controller collects information of finished automobile system components and sets regenerative braking torque of an integrated starter generator (ISG) motor and a rear-drive motor, and energy utilization efficiencies of the system are improved on the premise that system safety is guaranteed. The regenerative braking torque distribution method has the advantages that the method is a controlling method capable of maximally recycling braking energy on the premise that braking safety of the vehicle system is guaranteed, and the energy recycling rate of the system is improved; and simultaneously, work of a hydraulic braking system and an anti-lock brake system (ABS) of a prototype automobile are not required to be changed, the braking energy recycling method based on the braking system and the ABS of the prototype automobile is provided, and vehicle braking safety performances of the hybrid power system are guaranteed.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a regenerative braking torque distribution method for a four-wheel-drive hybrid power system. Background technique [0002] Under the background that the battery technology of pure electric vehicles has not been improved qualitatively, due to the cost and performance of batteries, it will be difficult for large-scale production of pure electric vehicles in the next few years. As a transitional solution, hybrid power is more suitable for large-scale mass production because of its small system changes. The four-wheel drive hybrid power has a high fuel saving rate, and is currently favored by domestic and foreign automobile manufacturers. [0003] In Chinese patent application No. 201110022220.0, a method for recovering braking energy of a hybrid vehicle is disclosed. It involves calculating the braking torque required by the vehicle through the vehicle controller, and allocating...

AI Technical Summary

Problems solved by technology

However, in the disclosed content, there is no mention of how the braking energy recovery system can ensure the braking safety of the vehicle when the high-voltage battery fails, the motor system fails, or the ABS system of the vehicle fails.

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