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Brake control method of electromechanical flywheel hybrid power system

A hybrid power system and braking control technology, applied in electric braking systems, electric vehicles, transportation and packaging, etc., can solve the problem that lithium batteries cannot give back braking energy of vehicles, so as to improve the amount of braking energy recovery, improve The effect of energy utilization and economical improvement

Inactive Publication Date: 2020-12-15
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the lithium battery cannot regenerate the braking energy of the vehicle under high braking conditions, improve the energy utilization rate of the vehicle and extend the mileage of the vehicle

Method used

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  • Brake control method of electromechanical flywheel hybrid power system
  • Brake control method of electromechanical flywheel hybrid power system
  • Brake control method of electromechanical flywheel hybrid power system

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Experimental program
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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] figure 1 It is a schematic diagram of the electromechanical flywheel hybrid power system, including: CAN bus, vehicle controller, flywheel and its brake, first clutch and its controller, second clutch and its controller, first power source motor and its controller, second Second power source motor and its controller, planetary row and its brake, speed change mechanism and its controller;

[0021] The vehicle controller collects the status signals of the vehicle, flywheel, first power source motor, and second power source motor in real time through the CAN bus, and inputs factors for the built-in control strategy. Further, the vehicle controller determines the flywheel, The working mode of the first power source motor and the second power source motor, and output to the first clutch, the second clutch, the flywheel brake, the first power source motor controller,...

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Abstract

A brake control method of an electromechanical flywheel hybrid power system belongs to the field of electric vehicle control and is characterized in that the hybrid power system can be controlled to operate in various brake modes according to states of a vehicle, a motor and a flywheel. Under low braking demand power, a second power source motor is controlled to participate in regenerative braking, and the braking energy recovery rate is increased; under the medium braking demand power, a first power source motor and the second power source motor are controlled to participate in regenerative braking of the vehicle, and the economy of vehicle driving and the continuous driving mileage of the vehicle are improved; and under the high braking demand power, a controller controls the first powersource motor, the second power source motor and the flywheel to jointly participate in regenerative braking of the vehicle, the running efficiency of a battery is improved, and the energy state of the flywheel is guaranteed.

Description

technical field [0001] The invention relates to the field of electric vehicle control, and relates to a braking control method for an electromechanical flywheel hybrid power system integrating a flywheel, a motor, a clutch and a planetary gear mechanism. Background technique [0002] Under the condition that there is no major breakthrough in the current electric vehicle battery energy storage technology, regenerative braking energy recovery can improve the energy utilization rate of electric vehicles. Driving distance; the flywheel has the advantage of high power density. Under high braking conditions, the flywheel and the motor participate in the recovery of braking energy at the same time. Through a reasonable braking control method, the regeneration system can be effectively improved. The amount of kinetic energy feedback, thereby improving the economy of vehicle driving, regenerative energy braking has received extensive attention from the automotive industry. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/02B60W10/08B60W10/18B60W10/10B60W40/105B60W40/00B60L7/10
CPCB60L7/10B60W10/02B60W10/08B60W10/10B60W10/18B60W40/00B60W40/105
Inventor 孙宾宾李文涛胡自豪张铁柱葛文庆李波
Owner SHANDONG UNIV OF TECH