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A battery screening method, device, and storage medium

A screening method and battery technology, which can be used in measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of complex process, long consumption time, low screening efficiency, etc., and achieve the effect of improving screening efficiency.

Active Publication Date: 2022-03-01
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned currently used battery screening methods all require manual testing, which consumes too much time and the process is relatively complicated, resulting in low screening efficiency

Method used

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  • A battery screening method, device, and storage medium
  • A battery screening method, device, and storage medium
  • A battery screening method, device, and storage medium

Examples

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Effect test

Embodiment 1

[0030] The embodiment of the present application provides a battery screening method. figure 1 Schematic flow chart of a battery screening method provided in the embodiment of this application Figure 1 . Such as figure 1 As shown, it mainly includes the following steps:

[0031] S101. Stop charging when the battery to be screened is charged to the target voltage after liquid injection.

[0032] In the embodiment of the present application, the battery screening device may first charge the battery to be screened, and stop charging when the battery to be screened reaches the target voltage.

[0033] It should be noted that, in the embodiment of the present application, the battery to be screened is a battery that has been injected with electrolyte solution, that is, a battery after the liquid injection is completed. For the battery after liquid injection, it needs to be formed to activate the battery so that the battery can be used normally. The battery screening device ac...

Embodiment 2

[0102] Figure 4 Schematic structure of a battery screening device provided for the embodiment of this application Figure 1 . Such as Figure 4 As shown, the device includes:

[0103] The current module 401 is used to stop the charging when the battery to be screened after the liquid injection is charged to the target voltage;

[0104] A determination module 402, configured to determine the first voltage of the battery to be screened when charging is stopped for a first duration;

[0105] The current module 401 is further configured to continue charging the battery to be screened for a second duration with a preset charging current after stopping charging for the first duration;

[0106] The determining module 402 is further configured to determine a second voltage of the battery to be screened when the second time period arrives; determine according to the first voltage, the second voltage and the preset charging current The first internal resistance of the battery to b...

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Abstract

The embodiment of the present application discloses a battery screening method and device, and a storage medium. When the battery to be screened is charged to the target voltage after liquid injection, the charging is stopped; when the charging is stopped for the first time, the first voltage, and use the preset charging current to continue to charge the battery to be screened for the second duration; when the second duration arrives, determine the second voltage of the battery to be screened; according to the first voltage, the second voltage and the preset charging current, determine the battery to be screened screening the first internal resistance of the battery; if the first internal resistance is within a first preset range, the battery to be screened is determined to be a qualified battery.

Description

technical field [0001] The embodiments of the present application relate to the technical field of battery charging, and in particular, to a battery screening method and device, and a storage medium. Background technique [0002] Lithium-ion batteries are widely used in electronic devices because of their high energy, high power, long service life, and wide operating range. [0003] At present, unqualified batteries can be screened out by manually measuring the battery voltage after lithium-ion batteries are formed. Specifically, for the battery whose liquid injection has been completed, it is possible to test whether the voltage of the battery reaches a target value, such as 4.1V, after the battery is formed for 8 hours with a small current. In addition, it is also possible to test the time required from battery formation to cut-off voltage, such as 4.2V, to determine whether it is within the preset range. Of course, after the battery is formed, the discharge capacity of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/344G01R31/385G01R31/389
CPCB07C5/344G01R31/3865G01R31/389
Inventor 谢红斌张加亮张俊
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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