Hybrid power car braking coordinated control system and control method thereof

Abstract

The invention discloses a hybrid power car braking coordinated control system and a control method thereof, aiming at overcoming the problem that regenerative braking moment and hydraulic braking moment of a hybrid power car in the prior art can not be controlled in a cooperative way. The system comprises an electronic braking maneuver subsystem, a coordinating controller (29), a hydraulic braking moment regulating subsystem and a regenerative braking moment subsystem; wherein, the coordinating controller (29) is respectively and electrically connected with the electronic braking maneuver subsystem, the hydraulic braking moment regulating subsystem and the regenerative braking moment subsystem. The coordinating controller (29) comprises a power control circuit (63), a memory (64), a coordinating controller slot (65), a sensor input signal processing circuit (67), a CAN signal processing circuit (68) and a central processing unit (CPU) (69) which is connected with all the parts by adopting a circuit connecting line (70). The invention also provides a method for coordinating and controlling the regenerative braking moment and the hydraulic braking moment.

Description

technical field [0001] The invention relates to a control system of a hybrid electric car, more specifically, it relates to a braking coordination control system of a hybrid electric car and a method for controlling regenerative braking and hydraulic braking by using the system. Background technique [0002] The search result of patent information shows that the following five patents are related to the present invention: [0003] 1. Chinese Patent Application No. 200680029974.6, Publication No. CN101242981A, published on August 13, 2008, entitled "Energy Regeneration in Hybrid Electric Vehicles with Hydraulic or Pneumatic Brakes" discloses a Method for regenerating energy during braking of a hybrid electric vehicle, allowing to optimize the utilization of the electric motor, when the braking device comprises at least one pressure reducing valve, with which the braking force applied by the driver is reduced according to the deceleration share of the electric motor dynamic p...

AI Technical Summary

Problems solved by technology

[0009] 1. The precise adjustment of the hydraulic braking torque cannot be achieved through the traditional hydraulic valve, and the consistency of the braking feeling is poor;

[0010] 2. When adjusting the hydraulic braking torque, it will affect the comfort of the brake pedal;

[0011] 3. During anti-lock brake control, the regenerative braking torque of the motor fails to exit the brake as soon as possible, which affects the safety of the brake

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