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Lithium precipitation detection method, secondary battery charging method and apparatus using same, and secondary battery system

一种二次电池、电池电压的技术，应用在二次电池充电/放电、二次电池、二次电池维修/保养等方向，能够解决不涉及测量等问题，达到长寿命、确保寿命、防止劣化的效果

Active Publication Date: 2017-08-29
LG ENERGY SOLUTION LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they do not relate to measurements made in environments where secondary batteries are used

Method used

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  • Lithium precipitation detection method, secondary battery charging method and apparatus using same, and secondary battery system
  • Lithium precipitation detection method, secondary battery charging method and apparatus using same, and secondary battery system
  • Lithium precipitation detection method, secondary battery charging method and apparatus using same, and secondary battery system

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Embodiment Construction

[0037] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various forms, but the embodiments are provided only to fully disclose the present invention and allow those skilled in the art to fully understand the scope of the invention.

[0038] First, refer to figure 1 A description is given of how the background of the invention was obtained.

[0039] figure 1is by manufacturing LiNi according to the experimental example of the present invention x co y mn z o 2 / Graphite three-electrode cell and charging it at a charging rate of 3C to obtain a plot of potential versus SOC (SOC-V plot). It is well known that a three-electrode battery is used in the study of a secondary battery to study the respective properties of a negative electrode and a positive electrode, and the three-electrode ba...

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Abstract

Provided are: a non-destructive lithium precipitation detection method capable of detecting lithium precipitation in real-time in an environment where a secondary battery is actually used; a secondary battery charging method and apparatus capable of charging, by using the non-destructive lithium precipitation detection method, a secondary battery under a condition in which lithium precipitation does not occur; and a secondary battery system capable of detecting the state of a secondary battery by using the non-destructive lithium precipitation detection method. The lithium precipitation detection method according to the present invention is a method for detecting the lithium precipitation in an anode in real-time by observing, when charging a secondary battery, a change in voltage of the battery according to SOC, and determines the point at which the rate of increase in voltage of the battery is slowed down to be the point at which lithium precipitation occurs.

Description

technical field [0001] The present invention relates to a method for detecting lithium plating in a lithium ion secondary battery, and more particularly, the present invention relates to a method of determining whether lithium plating occurs in real time through a non-destructive method. Furthermore, the present invention relates to a charging method and an apparatus for charging a secondary battery under the condition that lithium plating does not occur by using the method. In addition, the present invention relates to a secondary battery system that detects the state of the secondary battery by using the method. This application claims priority from Korean Patent Application No. 10-2015-0118919 filed in Korea on Aug. 24, 2015, the contents of which are incorporated herein by reference. Background technique [0002] Recently, with the sharp increase in the demand for hand-held electronic products such as laptop computers and mobile phones, and the increase in demand for el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48H01M10/44H02J7/00
CPCH01M10/44H01M10/48H02J7/007G01R31/44H01M10/0525Y02E60/10G01R31/3842G01R31/36H02J7/00G01N27/02
Inventor 李赫武金孝美吴松泽李松叶
Owner LG ENERGY SOLUTION LTD
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