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Environment-aware regenerative braking energy calculation method

A technology of regenerative braking and energy, applied in the direction of control drive, electric braking system, traffic control system of road vehicles, etc., can solve the problem of inaccurate regenerative braking energy and so on

Active Publication Date: 2018-02-09
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the calculation of regenerative braking energy based only on static information such as grade, speed (as briefly described), stop signs and statistical traffic flow is not accurate enough

Method used

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  • Environment-aware regenerative braking energy calculation method
  • Environment-aware regenerative braking energy calculation method
  • Environment-aware regenerative braking energy calculation method

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Embodiment Construction

[0016] The following detailed description is merely exemplary in nature and is not intended to limit the described embodiments or the application and uses of the described embodiments. The word "exemplary" or "illustrated" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" or "illustrative" is not limiting and is not necessarily to be construed as preferred or preferred over other implementations. All of the embodiments described below are exemplary embodiments provided to enable those skilled in the art to practice the invention, and are not intended to limit the scope of the appended claims. Furthermore, the illustrative embodiments described herein are not exhaustive and embodiments or implementations are possible other than those described herein and which fall within the scope of the appended claims. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the...

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Abstract

A method of operating a vehicle includes implementing regenerative braking of the vehicle using reduced regenerative energy based on actual route conditions and base regenerative braking parameters of the vehicle. The method utilizes, for example, vehicle route (including grade and speed profile), route ambient temperature trajectory, route precipitation trajectory (predicted and historical), route road condition (surface friction coefficient, undulating road) trajectory, Known or available information such as regenerative braking reduction maps (using ambient temperature, precipitation information and / or road surface information as input) enables improved calculation of accurate regenerative braking energy.

Description

technical field [0001] The present invention generally relates to regenerative braking of vehicles. In particular the invention relates to a context-aware regenerative braking energy calculation method in which dynamic information such as weather and road conditions are used to limit regenerative braking for the purpose of traffic control in different traction control events. Background technique [0002] Regenerative braking is one of the enablers of hybrid vehicle technology. It has been found that utilizing regenerative braking can achieve a fuel economy improvement of 15% to 30% over a vehicle without regenerative braking capability. Trip information has been used to control hybrid electric vehicles / plug-in hybrid electric vehicles / bare electric vehicles (HEV / PHEV / BEV) and other types of hybrid electric vehicles in the most fuel-efficient manner. Relevant to trip planning is a concept called "energy to empty" for PHEVs and BEVs, which provides an approximation of the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/0968
CPCB60L15/2045B60L2240/12B60L2240/642B60L2240/647B60L2240/662B60L2240/667B60L2240/68B60L2260/42Y02T90/16Y02T10/72B60L7/18Y02T10/64
Inventor 李勇华
Owner FORD GLOBAL TECH LLC