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Brake pedal feel flexibly settable electro-hydraulic composite braking system

A brake pedal, electro-hydraulic composite technology, applied in the direction of brake transmission, brake, transportation and packaging, etc., can solve the problems of high manufacturing process requirements, complex control logic, high implementation cost, etc., to achieve scalability and applicability Good, precise control, and the effect of improving braking efficiency

Active Publication Date: 2015-02-18
TONGJI UNIV
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AI Technical Summary

Problems solved by technology

However, among the above-mentioned schemes, some of the improved structures are more complex and have extremely high requirements on the manufacturing process; some systems require complex control logic and high implementation costs; some still retain the vacuum booster, but need to add an additional vacuum pump

Method used

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  • Brake pedal feel flexibly settable electro-hydraulic composite braking system

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Embodiment

[0038] Such as figure 1 As shown, an electro-hydraulic hybrid braking system that can flexibly set the feeling of the brake pedal includes a hydraulic braking subsystem 1, and the hydraulic braking subsystem 1 is controlled by an integrated brake master cylinder assembly 10 and hydraulic pressure The electro-hydraulic composite braking system also includes a composite braking control unit RBS and a motor feedback braking subsystem 3. The hydraulic braking subsystem 1, composite braking control unit RBS and motor feedback braking The subsystems 3 are connected sequentially; the motor regenerative braking subsystem 3 is composed of a motor 3-1, a motor controller MCU, a vehicle controller VMS, a battery management system BMS and a battery pack 3-2.

[0039] The integrated brake master cylinder assembly 10 is composed of an integrated brake master cylinder and a high-pressure oil source, and the integrated brake master cylinder includes an oil storage chamber 201, a pedal feeling...

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Abstract

The invention relates to a brake pedal feel flexibly settable electro-hydraulic composite braking system which comprises a hydraulic braking subsystem (1). The hydraulic braking subsystem (1) is formed by an integrated braking main cylinder assembly (10) and a hydraulic control unit (30). The brake pedal feel flexibly settable electro-hydraulic composite braking system also comprises a composite braking control unit RBS (Regenerative Braking System) and a motor regenerative braking subsystem (3). The hydraulic braking subsystem (1), the composite braking control unit RBS and the motor regenerative braking subsystem (3) are sequentially connected. Compared with the prior art, the brake pedal feel flexibly settable electro-hydraulic composite braking system has the advantages of being compact in structure and simple to achieve and enabling pedal force and displacement stroke characteristics to be flexibly adjusted with signals of a pedal feel hydraulic sensor and a pedal displacement sensor as feedback by changing brake pedal feel to simulate pulse width modulation of an electromagnetic valve according to different target vehicles and audiences.

Description

technical field [0001] The invention relates to an automobile brake system, in particular to an electro-hydraulic composite brake system which can flexibly set the feeling of the brake pedal. Background technique [0002] The powertrain of new energy vehicles such as pure electric vehicles, hybrid electric vehicles and fuel cell electric vehicles all use the motor-battery as the core to form an electric drive system. Energy recovery function. The use of regenerative braking can effectively recover the energy originally dissipated as heat energy during vehicle braking, and improve the energy utilization efficiency, fuel economy and emission performance of new energy vehicles. Since the motor feedback braking torque is limited by the external characteristics of the motor and the charging characteristics of the battery, it cannot meet the vehicle braking requirements on roads with high adhesion coefficient or high-speed emergency braking. The electro-hydraulic composite braki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/68B60T8/36
Inventor 孙泽昌刘杨王猛
Owner TONGJI UNIV
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