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Adaptive regenerative braking method and system

A technology of regenerative braking and brake pedal, applied in electric braking system, road vehicle drive control system, motor vehicle, etc., can solve the problem of reducing the fuel economy of electric vehicles

Active Publication Date: 2022-02-01
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Friction braking and unnecessary or excessive regenerative braking can reduce the fuel economy of electric vehicles

Method used

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  • Adaptive regenerative braking method and system
  • Adaptive regenerative braking method and system
  • Adaptive regenerative braking method and system

Examples

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Embodiment Construction

[0031] It is an object of the present invention to adjust regenerative braking to improve the efficiency of electric vehicles.

[0032] Some electric vehicles perform relatively aggressive regenerative braking when the brake and accelerator pedals are not depressed. Regenerative braking decelerates an electric vehicle at a faster rate than allowing the electric vehicle to coast. Regenerative braking introduces losses associated with, among other things, moving energy to and from the traction battery.

[0033] Drivers of electric vehicles are often unable to optimize the use of regenerative braking to reduce these inefficiencies. The present invention provides a method and system that can be used to optimize regenerative braking. The method and system adjust regenerative braking in response to information from an object detection system.

[0034] figure 1 A drivetrain 10 for an electric vehicle is schematically shown. Although the illustration depicts a hybrid electric veh...

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Abstract

An exemplary braking method includes monitoring for an impending deceleration of an electric vehicle, enabling regenerative braking by an amount if an imminent deceleration is detected, and decreasing the amount if an imminent deceleration is not detected regenerative braking.

Description

technical field [0001] The present invention relates to controlling regenerative braking to improve the efficiency of electric vehicles. Background technique [0002] In general, electric vehicles differ from conventional motor vehicles in that electric vehicles are selectively driven by one or more electric motors powered by batteries. In contrast to electric vehicles, conventional motor vehicles are driven solely by using an internal combustion engine. An electric motor replaces an internal combustion engine, or an electric motor is used in addition to an internal combustion engine to drive an electric vehicle. Example electric vehicles include hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV), fuel cell vehicles (FCV), battery electric vehicles (BEV). [0003] Applying braking torque can decelerate the electric vehicle. The braking torque may include a portion of braking torque from friction braking and a portion of braking torque from regenerativ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/10B60L7/18
CPCB60L7/10B60L7/18B60W2710/08B60W20/00B60W30/18127B60W2540/10B60W2540/12B60W2710/18B60Y2300/89B60W20/12B60K6/445B60W10/08B60W10/184B60W20/14Y02T10/7072Y02T90/14B60L53/00B60K6/22B60L3/12Y10S903/947B60Y2200/92B60W2552/00B60W2555/60B60W2554/00Y02T10/62Y02T10/70B60W50/0097
Inventor 赛斯·安东尼·布赖恩布赖恩·迈克尔·博尔杰
Owner FORD GLOBAL TECH LLC