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Electric vehicle regenerative braking system and regenerative braking method thereof

A technology of feedback braking and brake fluid, applied in electric braking systems, electric vehicles, braking transmissions, etc., can solve problems such as complex structures, inability to actively pressurize, and insufficient energy recovery to achieve braking sensation Comfortable, sufficient energy recovery, and good pedal feel

Active Publication Date: 2017-01-04
WUHU BETHEL AUTOMOTIVE SAFETY SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical solution described in this patent document uses a complicated method and structure, rough control, bad pedal feeling, and insufficient energy recovery.
[0009] The methods in the prior art basically cooperate with ABS and regenerative braking. These methods have rough control, cannot actively pressurize, and the pedal feel is not good.

Method used

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  • Electric vehicle regenerative braking system and regenerative braking method thereof

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Embodiment Construction

[0036] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0037] Such as figure 1 The schematic diagram of the brake system of the present invention is shown, the brake system includes master cylinder MC1, master cylinder MC2, master cylinder pressure sensor 9; also includes four wheel cylinders, namely left front wheel, right rear wheel, left rear wheel and right The wheel cylinders of the front wheels; the regenerative braking system is controlled by the electronic stability control system (ESC). The present invention is based on the coordination mode of the regenerative braking of the electronic stability control system (ESC).

[0038] In order to solve the problems existing in the pr...

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Abstract

The invention discloses a regenerative braking system and a regenerative braking method for an electric vehicle. According to the technical scheme, when a driver brakes, requirements on a braking torque are calculated through a pressure sensor in an ESC (Electronic Stability Control), a regenerative braking torque which can be provided by the electric vehicle is obtained through a CAN (Controller Area Network), and depressurization or pressurization is judged through the required braking torque and the regenerative braking torque. According to the technical scheme, the braking torque is finely controlled, the driver feels comfortable when braking and feels good when stepping on a pedal, and energy is fully recovered.

Description

technical field [0001] The invention belongs to the technical field of automobile construction, and relates to an automobile braking system, more specifically, the invention relates to an electric automobile regenerative braking system. In addition, the invention also relates to a regenerative braking method of the braking system. Background technique [0002] Electric vehicles are strongly supported by the state, and their technology and market are developing rapidly. The regenerative braking technology of electric vehicles can save energy, [0003] The patent document with Chinese patent number 201110155722.0 discloses "a method for controlling hydraulic braking and regenerative braking", and its technical solution is: [0004] The method includes commanding variable regenerative braking upon depression of a brake actuator until said regenerative braking reaches a threshold level, and commanding variable hydraulic braking in a wheel circuit. Command variable hydraulic b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/00B60T13/74
Inventor 汤德东张高超周鑫星张平平王乐潘金鹏郭超
Owner WUHU BETHEL AUTOMOTIVE SAFETY SYST
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