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Obtaining method and device of charge state of battery

A battery state of charge and acquisition method technology, applied in the direction of measuring devices, measuring electricity, measuring electric variables, etc., can solve the problems that have not been raised, the calculation of battery state of charge is inaccurate, etc., to improve accuracy and eliminate estimation factors , solve the effect of inaccurate calculation

Inactive Publication Date: 2015-01-21
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Aiming at the problem of inaccurate calculation of battery state of charge in the related art, no effective solution has been proposed so far. Therefore, the main purpose of the present invention is to provide a method and device for obtaining battery state of charge to solve the above problems

Method used

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  • Obtaining method and device of charge state of battery
  • Obtaining method and device of charge state of battery
  • Obtaining method and device of charge state of battery

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses an obtaining method and device of the charge state of a battery. The obtaining method comprises the steps of obtaining the work state of the battery, determining an estimation method used for estimating the charge state of the battery according to the work state of the battery and calculating the charge state values of the battery in different work states according to the estimation method. According to the obtaining method and device, the problem that calculation of the charge state of the battery is inaccurate in the prior art is solved, and the accuracy of calculating the charge state of the battery is improved.

Description

technical field [0001] The present invention relates to the technical field of electric vehicle batteries, in particular, to a method and device for acquiring a state of charge of a battery. Background technique [0002] Lithium batteries have been widely used in industry, daily life and other fields, especially in the field of electric vehicles. In the future, more and more batteries for electric vehicles will change from lead-acid batteries to lithium batteries. , that is, the estimation of SOC) has become an important part of battery management. Knowing the battery state of charge of electric vehicles is of great significance for the charge and discharge control of electric vehicles. However, due to the complex structure of the battery, the state of charge of the battery is affected by factors such as discharge current, internal temperature of the battery, self-discharge, aging, etc., making SOC estimation difficult. [0003] In the prior art, it is usually necessary to ...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 时锐张宝群宫成焦然孟颖马慧远迟忠君李香龙周宇陈艳霞
Owner STATE GRID CORP OF CHINA
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