Electrohydraulic-combined brake control method of battery electric vehicle

An electro-hydraulic combined braking, pure electric vehicle technology, applied in electric vehicles, electric braking systems, vehicle components, etc., can solve the problems of not fully utilizing the advantages of motor braking and slow adjustment response speed.

Active Publication Date: 2014-10-22
嘉兴智德睿控新能源有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional ABS anti-lock braking system adjusts the braking torque by adjusting the pressure of the brake cylinder, so as to realize anti-lock braking adjustment, but th

Method used

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  • Electrohydraulic-combined brake control method of battery electric vehicle
  • Electrohydraulic-combined brake control method of battery electric vehicle
  • Electrohydraulic-combined brake control method of battery electric vehicle

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Embodiment Construction

[0037] The technical idea of ​​the present invention is to use the combined action of the electromagnetic torque of the motor and the friction torque of the hydraulic machinery to complete the process of regenerative braking. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and specific examples.

[0038] In the present invention, if figure 1 As shown, the structure of the system includes: brake pedal and its sensor 1, brake mode judgment module 2, brake torque distributor 3, motor torque controller 4, hydraulic torque controller 5, vehicle dynamics model sensor 6, wheel hub Motor 7, charging controller 8, motor ABS controller 9, supercapacitor 10, DC / DC11, battery pack 12, state sensor 13. The pure electric vehicle drives the electric vehicle through four wheel hub motors, and the brake torque distributor receives the signal of the brake pedal state sensor to distribute the torque; the braking mode discrimination mod...

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Abstract

The invention discloses an electrohydraulic-combined brake control method of a battery electric vehicle and belongs to the technical field of electric vehicle control. During braking of an electric vehicle, stability of a vehicle body is guaranteed, part of braking energy can be recycled during braking by the aid of reversible power characteristics of a wheel hub motor, charging strategy can be optimized according to the size of electric current generated, kinetic energy consumed during braking can be converted into electric energy to be stored, and the purpose of increasing continuous driving range can be achieved. Relevant signals measured by a sensor and about a brake pedal, travel speed, wheel speed, brake cylinder pressure, battery end voltage, battery charging current, torque of a motor and the like are transmitted to a control system, the status of the vehicle body, wheels and a battery are monitored in real time by a controller, different barking requirements, energy recycling process braking security maintenance are realized by adjusting motor electromagnetic braking torque and hydraulic mechanical braking torque through an electrohydraulic-combined system, and higher efficiency can be achieved in utilization of energy of the electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electro-hydraulic combined regenerative braking system and a control method assembled with hub motors. Background technique [0002] At present, the development of electric vehicles, the realization of the electrification of vehicle energy and power systems, and the promotion of the strategic transformation of the traditional automobile industry have formed a trend in the world. With its low noise, no direct pollution, high energy efficiency, and good power performance, electric vehicles have become the mainstream research direction of future automobile development. Once electric vehicles achieve market breakthroughs, they will have a huge and far-reaching impact on the international automobile industry structure. Therefore, conforming to the development trend of the international automobile industry, grasping the strategic opportunity of the transformation of the t...

Claims

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Application Information

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IPC IPC(8): B60L7/10
Inventor 冯能莲张志林占子奇石盛奇宾洋
Owner 嘉兴智德睿控新能源有限公司
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