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Device and method for determining battery cell abnormality

A battery cell, abnormal technology, applied in the arrangement of multiple synchronous batteries, power consumption devices, battery/fuel cell control devices, etc., can solve problems such as large errors, impossible to determine battery cell capacity or other internal abnormalities, etc. Accurately determined effect

Pending Publication Date: 2021-11-02
LG ENERGY SOLUTION LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In this case, since the degree of deterioration of the battery is calculated from the capacity or internal resistance of the entire battery pack, it is impossible to determine the capacity of a specific battery cell or other internal abnormalities
[0008] In addition, when determining the capacity and deterioration of the battery pack, it is not measured in units of battery cells, so the error is large

Method used

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  • Device and method for determining battery cell abnormality
  • Device and method for determining battery cell abnormality
  • Device and method for determining battery cell abnormality

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Embodiment Construction

[0044] Hereinafter, various embodiments of the present invention are disclosed with reference to the accompanying drawings. However, it is not intended to limit the present invention to specific embodiments, and it should be understood that the present invention includes various modifications, equivalents and / or alternatives. With respect to the description of the figures, like reference numerals refer to like elements.

[0045]The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the scope of other embodiments. Terms in a singular form may include plural forms unless they have clearly different meanings in context. Unless otherwise indicated herein, all terms (including technical terms or scientific terms) used herein may have the same meaning as commonly understood by those skilled in the art. Generally, terms defined in dictionaries should be considered to have the same meaning as the contextual mea...

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Abstract

The present invention comprises a device for determining battery cell abnormality, comprising: a magnetic field measuring unit for measuring the magnetic field generated by a current flowing in a battery cell; and a control unit for calculating capacity of the battery cell by using the current that is calculated by the magnetic field measured by the magnetic field measuring unit, wherein the control unit determines an abnormality of the battery cell by using the capacity of the battery cell.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2019-0017277 filed on February 14, 2019, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a battery unit abnormality determination device and method. Background technique [0004] Recently, research and development of secondary batteries have been actively conducted. Here, secondary batteries as being capable of charge and discharge means that they include conventional Ni / Cd batteries and Ni / MH batteries and recent lithium ion batteries. Among secondary batteries, lithium-ion batteries have the advantage of much higher energy density than conventional Ni / Cd batteries and Ni / MH batteries, and the ability to manufacture lithium-ion batteries with a trend towards small size so that they can be used as power sources for mobile devices . In addition, lithium-ion b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/392G01R31/396G01R31/387G01R15/20G01R1/18
CPCG01R31/396G01R31/387G01R31/392G01R19/16542G01R31/3828G01R15/207Y02T10/70Y02E60/10G01R15/20G01R1/18G01R31/389G01R31/3842B60L58/12B60L58/16H02J7/0049B60L3/0046B60L2240/547B60L2240/549H02J7/0013
Inventor 宋炫振
Owner LG ENERGY SOLUTION LTD
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