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Lithium ion battery safety assessment method and device and electronic equipment

A lithium-ion battery, safety assessment technology, applied in battery/fuel cell control devices, control devices, electric vehicles, etc., can solve the problem of inability to evaluate and confirm the safety of batteries

Active Publication Date: 2021-12-24
HOZON NEW ENERGY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual use process, whether the design of the battery’s flip sheet can really ensure that the battery plays a role in protecting the safety of the battery during the entire life cycle needs to be evaluated, that is, the current safety level of the battery cannot be accurately evaluated and confirmed in the actual use process.

Method used

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  • Lithium ion battery safety assessment method and device and electronic equipment
  • Lithium ion battery safety assessment method and device and electronic equipment
  • Lithium ion battery safety assessment method and device and electronic equipment

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Embodiment Construction

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0038] In the following introduction, the terms "first" and "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance. The following introduction provides multiple embodiments of the present application, and different embodiments can be replaced or combined and combined, so the present application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment contains features A, B, C, and another embodiment contains features B, D, then the application should also be considered to include all other possible combinations containing one or more of A, B, C, D Although this embodiment may not be clearly written in the following content....

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Abstract

The invention discloses a lithium ion battery safety assessment method and device and electronic equipment, and the method comprises the steps: determining the current state of a battery cell when detecting that the battery cell of the battery generates gas; when the current state represents that the working state of the battery cell is normal, judging and controlling whether the overturning sheet is overturned or not based on the life cycle state of the battery cell, and acquiring first use data of the battery cell and second use data of the overturning sheet; when the current state represents that the working state of the battery cell is abnormal, controlling the overturning sheet to overturn, and obtaining second use data and third use data of the battery cell; and evaluating the current safety level of the battery cell based on the first use data, the second use data and the third use data. According to the lithium ion battery, the safety of the battery cell is quantitatively analyzed by using the air pressure in the battery cell and the overturning sheet, so that the safety level of the lithium ion battery is evaluated from two dimensions, and a driver can more accurately know the battery safety performance of the battery cell and master the safety margin of the battery cell.

Description

technical field [0001] The present application relates to the technical field of electric vehicles, and in particular, relates to a lithium-ion battery safety assessment method, device and electronic equipment. Background technique [0002] The lithium-ion power battery system is one of the core subsystems of new energy vehicles. The safety of the entire battery system is related to the safety of the entire vehicle and the safety of the passenger compartment. The battery is the core component of the battery system, and its safety design is of great significance to the safety of the battery system. The effectiveness and reliability of its safety design are the cornerstone of the safety of the entire battery pack. At present, most of the square shell batteries and cylindrical batteries are designed with a flip sheet between the battery pole piece and the output pole to improve the safety performance of the battery. [0003] The design principle of the internal flip sheet of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/10
CPCB60L58/10B60L2240/54Y02T10/70Y02E60/10
Inventor 欧龙辉徐莉
Owner HOZON NEW ENERGY AUTOMOBILE CO LTD
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