Battery expansion detection method, battery module and electronic equipment

A detection method and technology for battery expansion, which is applied in the fields of battery expansion detection, battery modules and electronic equipment, can solve problems such as difficulty in timely detection of battery expansion, reduce the possibility of detection errors and improve effectiveness

Pending Publication Date: 2021-10-08
DONGGUAN POWERAMP TECH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present application provides a battery expansion detection method, a battery module and electronic equipment to improve the problem that it is difficult to detect battery expansion in time

Method used

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  • Battery expansion detection method, battery module and electronic equipment
  • Battery expansion detection method, battery module and electronic equipment
  • Battery expansion detection method, battery module and electronic equipment

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Embodiment Construction

[0031] DRAWINGS technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present application, but not all embodiments. In case of no conflict, the embodiments and the technical features of the various embodiments described below may be combined with each other.

[0032] In the present application, the terms "first", "second" are used for descriptive purposes only, not to be construed as the number to indicate or imply relative importance or technical features specified in the indicated implicitly. Thereby, features "first", "second" are defined, and one or more features may be further included or implicitly. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined.

[0033] See figure 1 , Battery swelling detecting method comprising:

[0034] S1100, acquiring the internal resistance of th...

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Abstract

The invention discloses a battery expansion detection method, a battery module and electronic equipment. The battery expansion detection method comprises the steps of: obtaining an internal resistance growth rate and a first pressure difference of a battery; determining a first expansion rate of the battery according to the internal resistance growth rate, and determining a second expansion rate of the battery according to the first pressure difference; and determining the expansion rate of the battery according to the first expansion rate and the second expansion rate. The corresponding expansion rate of the battery is determined according to the internal resistance growth rate and the first pressure difference, possible expansion of the battery can be found in the monitoring process of the battery, and then the expansion rate of the battery is determined according to the two corresponding expansion rates and serves as an actual value of the expansion rate of the battery. By adopting the method for respectively determining the corresponding expansion rate by adopting the internal resistance growth rate and the first pressure difference, the possibility of battery expansion rate detection errors caused by adopting single data for estimation can be reduced, and the effectiveness of battery expansion rate detection is improved.

Description

Technical field [0001] TECHNICAL FIELD The present application relates in particular to a method for detecting cell expansion, the battery module and an electronic device. Background technique [0002] In the cell cycle / storage, process conditions, between the inner electrode and electrolyte batteries ongoing chemical reactions, cell-induced thickening constantly pole piece, the pole piece is inserted as the ions and charge-discharge side reaction leading to prolapse particle expansion and contraction, so that the gap between the pole pieces increasing. And in the more extreme conditions can cause gas production problems, the above situation can lead to the occurrence of expansion of the battery pouch. If you can not discover the expansion of the battery, not only can not give power electronics, and even burn accidents, explosions may occur, endangering the health and safety of users. Thus, a need for an method for monitoring the battery, the battery is detected to expansion ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/389G01R31/396H01M10/42H01M10/48
CPCG01R31/389G01R31/396H01M10/4285H01M10/486Y02E60/10
Inventor 童衍辰吴克成李翔
Owner DONGGUAN POWERAMP TECH LTD
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