H-shaped pipeline layout energy-feedback type hydraulic anti-lock brake system for electric vehicles
An energy feedback type, electric vehicle technology, applied in the direction of hydraulic brake transmission, brake, brake transmission, etc., can solve the problem of low specific energy of the battery, achieve small transformation, improve energy recovery efficiency, and feel good.
Active Publication Date: 2013-05-22
TSINGHUA UNIV
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Problems solved by technology
One of the key issues faced in the research of electric vehicles is the low specific energy of the batteries available in the market today, so the driving range of electric vehicles cannot be compared with that of gasoline vehicles
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[0009] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0010] like figure 1 As shown, the present invention includes, in the prior art, a pressure regulator with ABS function, a brake master cylinder 1, a liquid storage chamber 2, a master cylinder push rod vacuum booster 3, a foot pedal 4, a drive motor D, a brake Controller BCU, vehicle controller VCU, among them, the pressure regulator with ABS function is H-type pipeline arrangement: it includes right front wheel-left front wheel brake oil circuit (front wheel brake oil circuit) and right rear Wheel-left rear wheel brake oil circuit (rear wheel brake oil circuit), each brake oil circuit includes two wheel wheel cylinders, four solenoid valves, a low pressure accumulator, a return pump, and a high pressure damper The two brake oil circuits share one oil return motor. The specific settings are as follows:
[0011] One oil outlet of the brake master cyli...
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The invention relates to an H-shaped pipeline layout energy-feedback type hydraulic anti-lock brake system for electric vehicles, and the hydraulic anti-lock brake system provided by the invention is characterized in that a first high-speed switch valve is additionally arranged on a pipeline between a right front wheel-left front wheel brake oil line of a pressure regulator and a brake master cylinder; a branch line with a second high-speed switch valve, a third high-speed switch valve and an intermediate-pressure energy accumulator is additionally arranged in the right front wheel-left frontwheel brake oil line; a pipeline (connected with the brake master cylinder) of the right front wheel-left front wheel brake oil line of the pressure regulator is provided with a master cylinder pressure sensor; and a right front wheel cylinder and a left front wheel cylinder are respectively provided with a wheel cylinder pressure sensor. By using the hydraulic anti-lock brake system provided by the invention, the braking energy feedback and ABS integration control can be realized without influencing the driving habits of drivers, the braking performance meets the requirements of regulations,the vehicle fuel economy is improved, the development costs of hybrid vehicles and pure electric vehicle systems are reduced, and the energy recycling efficiency in the process of braking is improved, therefore, the hydraulic anti-lock brake system can be widely applied to vehicles.
Description
technical field [0001] The invention relates to a hydraulic braking anti-lock braking system of a vehicle, in particular to an H-shaped pipeline arrangement energy feedback electric vehicle hydraulic braking anti-lock braking system suitable for a hybrid vehicle or a pure electric vehicle. Background technique [0002] It is an important technology to improve the energy utilization rate of electric vehicles by controlling the power components of electric vehicles to recover the kinetic energy dissipated during braking. In this process, the electric motor is used as a generator, and the recovered energy is stored in the battery in the form of electricity. One of the key problems faced in electric vehicle research is the low specific energy of the batteries available on the market today, so that the driving range of electric vehicles cannot be compared with gasoline vehicles. To solve this problem, in addition to making breakthroughs in the battery bottleneck technology, the ...
Claims
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IPC IPC(8): B60T11/20B60T13/52B60T8/176
Inventor 张俊智吕辰张彪苟晋芳孔德聪
Owner TSINGHUA UNIV