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Brake energy feedback system based on improvement brake pedal feel

A braking energy feedback and braking pedal technology, which is applied in electric braking systems, braking transmissions, brakes, etc., can solve the problems of low specific energy of batteries, improve the feeling of pedals, improve energy recovery efficiency, improve The effect of fuel economy

Inactive Publication Date: 2010-09-29
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Brake energy feedback system based on improvement brake pedal feel
  • Brake energy feedback system based on improvement brake pedal feel

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Embodiment Construction

[0009] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0010] Such as figure 1 As shown, the present invention uses the VDC / VSC / ESP pressure regulator in the traditional vehicle braking system and the driving motor in the hybrid vehicle or electric vehicle to design the control software reasonably and reliably, and proposes a new type of braking energy feedback Transformation plan. The transformation includes: 1. Detach the original front wheel brake oil circuit from the brake master cylinder 1, and modify it to be directly connected with the liquid storage chamber 2; 2. Separate the front wheel brake oil circuit from the brake master cylinder 1 After the upper part is disassembled, a stroke simulator 3 is connected to the vacant oil outlet of the brake master cylinder 1; 3. For pure electric vehicles, an electric vacuum pump 4 is additionally set to push the master cylinder push rod vacuum booster 5. C...

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Abstract

The invention discloses a brake energy feedback system based on improvement brake pedal feel. The brake energy feedback system is characterized in that an oil outlet of a liquid storage chamber is connected with a front wheel brake oil line of a pressure regulator; an oil outlet of a brake main cylinder is connected with a rear wheel brake oil line of the pressure regulator; the other oil outlet of the brake main cylinder is connected with a stroke simulator; a main cylinder pressure sensor is arranged on a pipeline connected with the brake main cylinder and the rear wheel brake oil line of the pressure regulator; and a wheel cylinder pressure sensor is arranged on one wheel cylinder in the front wheel brake oil line of the pressure regulator. The main cylinder pressure sensor, the wheel cylinder pressure sensor and an oil returning electric motor for supplying oil to a front wheel and a rear wheel are controlled by a brake controller. The brake controller and a drive electric motor are controlled by a hybrid vehicle controller. The invention can ensure the same brake pedal feel as the traditional vehicle, recover the brake energy maximally, realize the functions of ABS (Anti-skid Brake System), ASR (Acceleration Slip Regulation), ESP (Electronic Stability Program), and the like, and extend the driving range of electric driven vehicles.

Description

technical field [0001] The invention relates to a braking energy feedback system of a vehicle, in particular to a hybrid vehicle with an active braking function, or a braking energy feedback system based on improving the feeling of a brake pedal of a pure electric vehicle. Background technique [0002] It is an important technology to improve the energy utilization rate of electric vehicles to recover the kinetic energy dissipated during braking by controlling the power components of electric vehicles. 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 issues faced during electric vehicle research is the low specific energy of the batteries available in the market today, so that the driving range of electric vehicles cannot be compared with that of gasoline vehicles. To solve this problem, in addition to making breakthroughs in the bottleneck technology of batteries, the ov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/10B60T13/74
CPCY02T90/16
Inventor 张俊智张彪李守波陈鑫
Owner TSINGHUA UNIV
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