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Method of estimating SOC (State of Charge) of battery and computer readable storage medium

A technology of battery and battery state of charge, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of reducing battery life, user misleading, battery overcharging, etc., to achieve the effect of improving accuracy

Active Publication Date: 2017-08-25
ANHUI RNTEC TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

If the estimated SOC value is too small, it will easily lead to overcharging of the battery, which will seriously damage the battery and reduce the service life of the battery; nest" and other serious consequences

Method used

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  • Method of estimating SOC (State of Charge) of battery and computer readable storage medium
  • Method of estimating SOC (State of Charge) of battery and computer readable storage medium
  • Method of estimating SOC (State of Charge) of battery and computer readable storage medium

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Embodiment Construction

[0037] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0038] The term "charging end" used in this application refers to a stage in the charging process of the battery that is close to the completion of charging, and the term "discharging end" refers to a stage in the process of discharging the battery that is close to the completion of discharging.

[0039] figure 1 is a flowchart of a method for estimating battery SOC according to an embodiment of the present invention. Such as figure 1 As shown, in one embodiment of the present invention, a method for estimating battery SOC is provided, which may include:

[0040] In step S11, it is judged whether the battery enters the charging end;

[0041] In step S12, in ...

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Abstract

The invention relates to the technical field of battery management, and discloses a method of estimating a SOC (State of Charge) of a battery and a computer readable storage medium. The method comprises the following steps: whether the battery enters a charging tail end is judged; in a condition in which the battery is judged to enter the charging tail end, according to the detected battery current I, the battery voltage V and a pre-stored corresponding relationship among the battery voltage V, the current I and the SOC value under different multiplying factors, the SOC value of the battery is estimated. The precision of the SOC value of the battery estimated in the method is greatly improved, and the phenomenon that the battery is damaged due to overcharge can be prevented.

Description

technical field [0001] The present invention relates to the technical field of battery management, and in particular, to a method for estimating battery SOC and a computer-readable storage medium. Background technique [0002] Lithium batteries are widely used in fields such as electric vehicles, energy storage and backup power due to their high energy density and good environmental performance. State-of-Charge (SOC) is one of the key parameters of lithium batteries. SOC reflects the remaining power of the battery pack and is a direct parameter for users to evaluate the mileage of the current electric vehicle and the remaining working time of the backup power supply. [0003] At present, the battery management system (Battery Management System, BMS) mainly uses the ampere-hour integration method to estimate the SOC of the battery pack, supplemented by the open circuit voltage at rest for correction. However, this method has certain defects, mainly because when the lithium b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/367G01R31/3842
Inventor 吉祥曾国建范晓东蔡华娟余铿程晓伟钱海进
Owner ANHUI RNTEC TECH CO LTD
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