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Battery cell balancing method and system

A battery cell and balancing system technology, applied in the field of performing battery cell balancing and judging control conditions through the feedback of the cell balance, can solve problems such as shortening the lifespan, difficult operation of the battery pack, interfering with the stable operation of the battery pack, etc., to improve reliability. Effect

Active Publication Date: 2018-06-08
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the discharge of the battery pack is continued in a state where there is an imbalance in the state of charge, a specific cell whose state of charge is low is overdischarged and the battery pack is difficult to operate stably
In addition, the situation where a particular cell is overcharged during charging is also a cause of disturbance to the stable operation of the battery pack
Overcharging or overdischarging of specific battery cells that occurs as such can cause reduced performance of the battery pack and shorten lifespan as well as limit the capacity of the battery pack

Method used

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  • Battery cell balancing method and system
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  • Battery cell balancing method and system

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Embodiment Construction

[0026] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that the present invention can be easily implemented by those skilled in the art. The invention can be practiced in various ways and is not limited to the embodiments described herein. In the drawings, elements not related to the description are omitted to clearly illustrate the present invention and like elements are denoted by like reference signs throughout the application.

[0027] Also, if some elements are described as being "connected" to other elements, they may be not only "directly connected" to the other elements but also "indirectly connected" with other elements interposed therebetween. Furthermore, when an element is referred to as "comprising" or "comprising" a component, it does not exclude another component, and may further include other components, unless the context clearly indicates otherwise. The term "operating for" as used ...

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Abstract

The present invention relates to a method and a system for stabilizing a battery through cell balancing of a battery pack and, more particularly, to a method and system for operating battery cell balancing and determining a control situation through feedback on the cell balancing, thereby improving reliability of the battery cell balancing and enabling proactive measures for malfunctioning of thebattery.

Description

technical field [0001] The present disclosure relates to a method and system for stabilizing a battery through cell balancing of a battery pack, and more particularly, to a method and system for performing battery cell balancing and judging a control situation through feedback of cell balancing, This increases the reliability of battery cell balancing and enables active measurement of battery anomalies. Background technique [0002] Typically, a battery pack mounted on a device requiring rechargeable electronic storage, such as an energy storage device, an electric vehicle, or a mobile electronic device, includes a plurality of battery cells connected in series or in parallel. When a battery pack including a plurality of battery packs is discharged, a difference in state of charge due to a self-discharge rate is generated between cells over time. When the discharge of the battery pack is continued in a state where there is an imbalance in the state of charge, a specific cel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/42G01R31/36G08B21/18
CPCG08B21/18H01M10/42H02J7/00H02J7/0014G01R19/16542G01R31/396Y02E60/10H02J7/0048G01R31/3646G01R31/3835G08B21/182G08B21/185H01M10/425H01M2010/4271H01M10/441H02J7/0016
Inventor 南皓喆尹锡珍金东炫金学仁
Owner LG ENERGY SOLUTION LTD