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Method for charging battery

A battery charging and battery technology, applied in the direction of secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problem of changing the charging cut-off voltage charging method, and achieve the effect of low cost

Inactive Publication Date: 2014-02-12
SIMPLO TECH COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, in the control of traditional lithium battery charging, most of them are based on the adjustment of the current state of the lithium battery, and there is no charging method that relatively changes the charging cut-off voltage according to the user's usage habits.

Method used

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  • Method for charging battery
  • Method for charging battery

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Embodiment Construction

[0035] According to an embodiment of the present invention, the battery charging method is under constant current charging, according to the idle time (Idle time) of the battery, the percentage of remaining capacity (Relative State Of Charge; RSOC) or any combination of the above two basis, in a linear or non-linear manner. Linear preset rules to determine an appropriate charging cut-off voltage, and change to constant voltage charging when the battery voltage rises to the charging cut-off voltage. At this time, the battery charging method can be further determined according to the value of the actual capacity (FCC) An appropriate charging cut-off current. However, under constant voltage charging, when the charging current decreases to the charging cut-off current, it is determined that the battery is fully charged.

[0036] For convenience of description, the battery pack described in the following embodiments is an example of a lithium battery pack, however, this is not a li...

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PUM

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Abstract

The invention provides a method for charging a battery. The method is used for prolonging the service life of the battery; the method for charging the battery is mainly as follows: proper charge cut-off voltage is adjusted along with variation of at least one of residual capacity, idle time and the like of the battery, furthermore, the charge cut-off voltage is not a fixed value and can change along with the current state of the battery, thereby increasing the charging efficiency of the battery; in addition, the invention additionally provides a charging method which can adjust proper charge cut-off current along with the variation of actual capacity of the battery. The circuit is low in implementation cost, only the charging law of software needs to be changed, the service life of the battery can be prolonged, and the charging method is safer.

Description

technical field [0001] The invention relates to a battery charging method, in particular to a battery charging method which can record the user's usage habits, so as to revise up or down the charging cut-off voltage of the battery, so as to prolong the battery life. Background technique [0002] Due to the limitation of material characteristics, the charging voltage of lithium battery should generally not exceed 4.2V / battery, otherwise the service life will be greatly reduced. At the same time, if the charging voltage exceeds too much, the lithium battery may burn or explode. [0003] refer to figure 1 , is a schematic diagram of the charging curve of a traditional lithium battery. The charging method of lithium battery is to charge at a constant current at first, such as curve I, and then charge at a constant voltage to fully charge, such as curve V. The initial constant current charging is carried out until the battery voltage rises to a set charge cut-off voltage Voff. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44
CPCY02E60/12Y02E60/10
Inventor 陈泰宏陈明达黄国彰傅志仁
Owner SIMPLO TECH COMPANY