Hybrid electrical vehicle (HEV)/electrical vehicle (EV) regeneration brake pressure coordinate control system based on antilock brake system (ABS) hardware

Abstract

The invention discloses a hybrid electrical vehicle (HEV) / electrical vehicle (EV) regeneration brake pressure coordinate control system based on antilock brake system (ABS) hardware. The system comprises a hydraulic brake subsystem, a motor regeneration subsystem and a control system for controlling the hydraulic brake subsystem and the motor regeneration brake subsystem; and the hydraulic brake subsystem comprises a vacuum assistance system, a brake main cylinder, an oil storage tank, a travel simulator, a front wheel ABS pressure regulation system, a front wheel brake wheel cylinder, a rearwheel ABS pressure regulation system and a rear wheel brake wheel cylinder, and a working cavity I of the brake main cylinder is communicated with the travel stimulator. In the HEV / EV system regeneration brake pressure coordinate control system based on the ABS hardware, the working modes such as pure motor brake, electrohydraulic combined brake, pure hydraulic brake, antilock brake and the like can be flexibly selected according to specific conditions, and accurate brake force is provided; when a brake pedal is trampled, the travel simulator can produce good retardation brake feeling; and during pressurization, an overflow valve and a solenoid directional valve can protect an oil pump I driving motor to ensure that a system can work stably.

Description

technical field [0001] The invention relates to a comprehensive braking system of a hybrid car, a pure electric car and a fuel cell car, in particular to a regenerative braking pressure coordination control system based on ABS hardware. Background technique [0002] With the global energy crisis and environmental pollution, hybrid electric vehicles (HEV), pure electric vehicles (EV) and fuel cell electric vehicles are a direction for the development of the automobile industry. Regenerative braking is a major advantage of the above models and is also their key technology one. Scholars at home and abroad have done a lot of research on regenerative braking, and proposed a variety of strategies and methods for matching control of regenerative braking and hydraulic braking. No matter what kind of matching form, the realization should be based on the flexible control of hydraulic braking force. If only the traditional hydraulic braking system is used, the hydraulic braking force...

AI Technical Summary

Problems solved by technology

No matter what kind of matching form, the realization should be based on the flexible control of hydraulic braking force. If only the traditional hydraulic braking system is used, the hydraulic braking force and the driver's pedal force input are a fixed function. Then the distribution control scheme of regenerative braking force and hydraulic braking force cannot be realized.

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