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Battery pretreatment method for battery system

A battery system and pretreatment technology, applied in the direction of secondary battery repair/maintenance, etc., can solve problems such as being difficult to find and difficult for battery systems

Active Publication Date: 2017-08-04
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, the short circuit in the battery cell is a gradual process, which is generally not easy to be found, so it brings great difficulties to the actual judgment of whether the battery system is faulty.

Method used

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  • Battery pretreatment method for battery system
  • Battery pretreatment method for battery system

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Embodiment Construction

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0022] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...

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Abstract

The invention discloses a battery pre-treatment method used for a battery system, wherein the method includes following steps: (1) charging a to-be-treated battery cell to enable the SOC of the to-be-treated battery cell to reach a first preset value; (2) allowing the to-be-treated battery cell of which the SOC reaches the first preset value to stand for a first preset time, and meanwhile monitoring voltage reduction of each battery cell to screen-out the battery cells of which the voltage reduction is higher than a first preset voltage reduction; (3) adjusting the SOC of the rest battery cells to a second preset value; (4) assembling the battery cells with the second preset value to form a battery module, and charging the battery module to enable the SOC of the battery module to reach a third preset value; and (5) at a preset temperature, allowing the battery module to stand for a second preset time and detecting the voltage reduction of the battery module to determine whether the battery module is qualified or not. The battery pre-treatment method can accurately determine whether the battery cell is internally shorted or not and can effectively avoid a problem of failure due to the internal short of the battery cell, and can reduce the period of pre-treatment of a battery.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a battery pretreatment method for a battery system. Background technique [0002] At present, the safety of electric vehicles depends to a large extent on the safety of the battery system of the electric vehicle, and whether the battery system fails is mostly closely related to the internal short circuit of the battery cell itself. [0003] Among them, the short circuit in the battery cell is a gradual process, which is generally not easy to be found, so it brings great difficulties to the actual judgment of whether the battery system is faulty. Most of the battery manufacturers are from the perspective of battery production to reduce the phenomenon of battery failure due to short circuit in the battery. Contents of the invention [0004] This application is made based on the inventor's knowledge and discovery of the following problems and facts: [0005] In the related art,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42
CPCH01M10/42Y02E60/10
Inventor 丁海鹏
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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