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Braking energy recovery system based on hydraulic ABS (anti-lock braking system) pressure regulator

A technology of braking energy recovery and pressure regulator, applied in the direction of brake, brake transmission, transportation and packaging, can solve the problem of low specific energy of power battery and achieve the effect of improving fuel economy

Active Publication Date: 2012-07-11
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the key problems faced in the research process of electric vehicles is that the specific energy of the power battery is low, resulting in a greater disadvantage in the driving range of electric vehicles compared with traditional internal combustion engine vehicles

Method used

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  • Braking energy recovery system based on hydraulic ABS (anti-lock braking system) pressure regulator
  • Braking energy recovery system based on hydraulic ABS (anti-lock braking system) pressure regulator

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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0012] The present invention uses the ABS pressure regulator in the traditional vehicle hydraulic braking system and the driving motor in the hybrid vehicle or electric vehicle to design the control software reasonably and reliably, and proposes a novel braking system with braking energy recovery function .

[0013] like figure 1 As shown, the traditional ABS pressure regulator includes two brake oil circuits: left front wheel-right rear wheel brake oil circuit and right front wheel-left rear wheel brake oil circuit. Each brake oil circuit includes two wheel cylinders, four solenoid valves, an oil return pump, an oil return motor, and a low-pressure accumulator. Under the control of this oil circuit, the configurations are: brake master cylinder 1, liquid storage chamber 2, electric vacuum pump 3, brake pedal 4, vacuum booster 5, master cylinder pre...

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Abstract

The invention discloses a braking energy recovery system based on a hydraulic ABS pressure regulator. The braking energy recovery system comprises a pressure regulator with hydraulic ABS function, a main braking cylinder, a main cylinder vacuum booster, a drive motor, a braking controller, a vehicle control unit and a motor controller. The braking energy recovery system is characterized in that a pressure sensor is arranged on an oil outlet pipe of the main braking cylinder; a pressure sensor is arranged on the front wheel cylinder in the ABS pressure regulator; the signals of the two sensors are fed back to the braking controller; the drive motor is controlled by the motor controller; the braking controller keeps CAN (controller area network) communication with the vehicle control unit; the vehicle control unit keeps CAN communication with the motor controller; and the pressure regulator is used for controlling two braking oil circuits from a left front wheel to a right rear wheel and from a right front wheel to a left rear wheel. According to the invention, the braking energy can be recovered by using the motor to feed back the braking force, and the pressure of the wheel cylinder can be boosted, maintained and reduced by using the ABS pressure regulator, thereby realizing integrated control of braking energy recovery and ABS.

Description

technical field [0001] The invention relates to a hydraulic braking system of a vehicle, in particular to a braking system suitable for a hybrid electric vehicle or a pure electric vehicle based on a hydraulic ABS pressure regulator to realize the braking energy recovery function. Background technique [0002] With the aggravation of energy problems and environmental pollution problems, the research and application of electric vehicles is of great significance. One of the key problems faced in the research process of electric vehicles is that the specific energy of power batteries is low, resulting in a greater disadvantage in the driving range of electric vehicles compared with traditional internal combustion engine vehicles. To solve this problem, in addition to seeking a breakthrough in the bottleneck technology of batteries, how to optimize the overall design of electric vehicles, establish an efficient and safe energy management system, and rationally use and save energ...

Claims

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Application Information

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IPC IPC(8): B60T13/68B60T13/74
Inventor 张俊智吕辰苟晋芳岳小伟
Owner TSINGHUA UNIV
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