A new energy vehicle regenerative braking control method and device

A technology of new energy vehicles and braking torque, which is applied in the direction of control devices, control drives, electric vehicles, etc., can solve problems such as vehicle braking irregularities, achieve the effects of saving braking costs, ensuring ride comfort and safety

Active Publication Date: 2020-09-01
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a regenerative braking control method and device for new energy vehicles, which is used to solve the problem of uneven braking when the electric brake is removed when the ABS is triggered in the prior art

Method used

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  • A new energy vehicle regenerative braking control method and device
  • A new energy vehicle regenerative braking control method and device

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Embodiment Construction

[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] An embodiment of the new energy vehicle regenerative braking control method of the present invention.

[0025] When ABS detects that the wheel slip rate is greater than a set value, the ABS identification signal will change from 0 to 1, which is called ABS trigger; when it detects that the wheel slip rate is less than the second set value, the ABS identification signal will change from 1 to 0, which is called ABS recovery.

[0026] When the ABS is triggered, the control motor starts from the current actual braking torque and gradually reduces the braking torque, and the braking torque detects the ABS identification signal in real time during the reduction process. When the identification signal changes from 1 to 0, That is, when the ABS changes from triggering to recovery, the control motor takes the actual motor torque at the moment...

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Abstract

The invention relates to a new energy vehicle regenerative braking control method and device. The method comprises detecting identification signals of the anti-lock brake system in real time during the braking process; when it is detected that an identification signal of the anti-lock brake system is valid, a motor is controlled to gradually reduce the braking torque. The invention does not need to be equipped with an electronically controlled braking system, nor does it need to add a separate controller. Only the combined control of the anti-lock braking system and the electric brake can avoid the problem of the car fronting caused by the removal of the electric brake when the identification signal of the anti-lock braking system is triggered, thereby saving the cost of braking.

Description

technical field [0001] The invention belongs to the technical field of new energy regenerative braking systems and anti-lock braking systems, and in particular relates to a regenerative braking control method and device for new energy vehicles. Background technique [0002] In order to reflect the energy-saving and environmental protection advantages of new energy vehicles, new energy vehicles are required to have regenerative braking functions in addition to traditional mechanical braking, and ABS (Antilock Brake System, anti-lock braking system) is a must for modern automobile braking safety. This requires coordinated braking control with ABS in the process of regenerative braking, which also requires the vehicle to have the function of wheel anti-lock braking in the process of regenerative braking. [0003] At present, most of the new energy vehicles adopt the following braking method: the brake pedal opening only adopts the electric braking method before the idling strok...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/18B60L15/20
CPCB60L7/18B60L15/2009B60L2240/423Y02T10/72
Inventor 沙超王炜斌
Owner ZHENGZHOU YUTONG BUS CO LTD
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