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Charging method and device

A charging method and charging mode technology, applied in the field of electronics, can solve the problems of accelerated battery aging, decreased charging speed, battery heating, etc., to achieve the effect of increasing charging speed, avoiding direct reduction, and improving service life

Inactive Publication Date: 2020-08-07
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

When using constant current charging to charge the battery, the high current will cause the battery to have a large polarization, resulting in a decrease in charging speed, and the high current will also cause the battery to heat up
In the related technology, in order to alleviate the heating phenomenon of the battery, after the battery is charged with a constant current for a period of time, the battery is continuously charged with a reduced charging current. However, in this case, the polarization of the battery It cannot be alleviated, and it is very likely to be further aggravated, which will further lead to a decrease in charging speed
In order to alleviate the polarization phenomenon of the battery, the related technology will switch to constant voltage charging after charging the battery with a constant current for a period of time. During the process, the temperature of the battery rises rapidly, which will accelerate the aging of the battery.

Method used

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Embodiment Construction

[0062] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0063] figure 1 It is a flow chart of a charging method shown according to an exemplary embodiment. The method can be applied to a charging control module, which can be, for example, a charging control circuit or a charging control chip, and the embodiment of the present disclosure does not limit the type of the charging control module. like figure 1 As shown, the method may include...

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Abstract

The invention relates to a charging method and device. The method comprises the following steps: from a first moment to a second moment later than the first moment, carrying out constant-current charging on a battery by using a first current value; and charging the battery with a second current value from the second moment to a third moment later than the second moment, progressively decreasing the second current value from the first current value to the third current value in a stepped manner between the second moment and the third moment, and performing constant-current charging on the battery with the third current value from the third moment to a fourth moment later than the third moment. According to the invention, the heating phenomenon of the battery is effectively relieved, and theservice life of the battery is prolonged; and the direct reduction of the charging current is avoided by the stepped decreasing charging mode of the charging current value, so that the polarization of the battery can be effectively relieved so as to effectively improve the charging speed of the battery.

Description

technical field [0001] The present disclosure relates to the field of electronic technology, in particular to a charging method and device. Background technique [0002] Generally speaking, the battery charging methods can include constant current charging and constant voltage charging. Wherein, constant current charging can be expressed as keeping the charging current constant until the charging voltage of the battery reaches a preset value during the charging process. Constant voltage charging can be expressed as that during the charging process, the charging voltage value remains constant throughout the charging time, and as the battery terminal voltage gradually increases, the current gradually decreases. When using constant current charging to charge the battery, the high current will cause the battery to generate greater polarization, resulting in a decrease in charging speed, and the high current will also cause the battery to heat up. In the related technology, in ...

Claims

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Application Information

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IPC IPC(8): H01M10/44H02J7/00
CPCH01M10/44H02J7/007Y02E60/10
Inventor 高锃魏学文陈仁杰王宗强
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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