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SOC control system of hybrid electric vehicle and control method of SOC control system

A hybrid electric vehicle and control system technology, applied to hybrid electric vehicles, motor vehicles, control devices, etc., can solve problems such as power variation operating conditions do not exist, vehicle operating state prediction, etc.

Active Publication Date: 2017-01-04
SAIC GENERAL MOTORS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this can better solve the problem of frequent battery charging and discharging, it does not fully use the information to predict the future operating status of the vehicle, and has no obvious effect on operating conditions with large power changes.

Method used

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  • SOC control system of hybrid electric vehicle and control method of SOC control system
  • SOC control system of hybrid electric vehicle and control method of SOC control system
  • SOC control system of hybrid electric vehicle and control method of SOC control system

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Embodiment Construction

[0042] Introduced below are some of the various embodiments of the invention, intended to provide a basic understanding of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of protection.

[0043] figure 1 It is a schematic diagram showing the SOC control system of the hybrid vehicle of the present invention.

[0044] Refer below figure 1 The SOC control system of the hybrid vehicle of this invention is demonstrated.

[0045] like figure 1 As shown, the SOC control system of the hybrid electric vehicle of the present invention includes: a feedforward compensation device 100 , a computing unit 200 and a fuzzy controller 300 .

[0046] Among them, the feedforward compensation device 100 calculates the feedforward compensation SOC of the SOC according to the navigation information m , and the feed-forward compensation driving power P calculated according to the driving power curve stored in the historical data o...

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Abstract

The invention relates to an SOC (State of Charge) control system of a hybrid electric vehicle and a control method of the SOC control system. The control system comprises a feed-forward compensation device for calculating feed-forward compensation SOCm of an SOC according to navigation information, and calculating feed-forward compensation driving power Pm according to a historical driving power curve and a current driving power curve of the vehicle, a calculating unit for calculating an SOC difference deltaSOC according to the feed-forward compensation SOCm and the current SOC supplied by a vehicle-mounted bus, and calculating a driving power difference deltaPDrive according to the feed-forward compensation driving power Pm and the current driving power PDrive supplied by the vehicle-mounted bus, and a fuzzy controller for acquiring working point data of an engine according to the current SOC supplied by the vehicle-mounted bus, the SOC difference deltaSOC and the driving power difference deltaPDrive.

Description

technical field [0001] The present invention relates to battery SOC control technology, and more particularly relates to the SOC control system and control method of a series hybrid electric vehicle. Background technique [0002] In the prior art, in the field of series hybrid electric vehicles, SOC control technology is an important aspect. The full name of SOC is State of Charge, that is, the state of charge, also called the remaining capacity, which represents the ratio of the remaining capacity of the battery after it has been used for a period of time or left unused for a long time to the capacity of the fully charged state, usually expressed as a percentage. Its value ranges from 0 to 1. When SOC=0, it means that the battery is completely discharged. When SOC=1, it means that the battery is fully charged. [0003] The SOC control methods of series hybrid electric vehicles are roughly divided into two types: power following and constant temperature. The characteristic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/26B60W10/06B60W10/08B60W20/00
CPCB60W10/06B60W10/08B60W10/26B60W20/00B60W40/04B60W2510/242B60W2552/15B60W2710/0666B60W2710/083Y02T10/62
Inventor 徐威任明吴凯马小建潘志前
Owner SAIC GENERAL MOTORS
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