Quick charging method for improving storage battery specific capacity
A fast-charging, specific-capacity technology, applied in secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve problems such as insufficient charging of batteries, failure to propose charging management methods, etc., achieve fast charging and easy promotion Effect
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[0029] Example 1
[0030] 501417HS10C high-rate polymer lithium-ion battery, rated capacity 50mAh, 1C rate current 50mA.
[0031] According to formula (4), select the original constant current fast charging current I 1 is the 4C rate current (200mA), and the constant current charging cut-off voltage U is obtained according to the formula (5) 1 is 4.36V.
[0032] According to the formulas (2) and (3), the values of n are respectively selected as 1 and 2, and the values of m are 2, 3 and 4 to obtain the constant current charging current I 2 They are 175mA and 150mA respectively; constant voltage (4.36V) charging cut-off currents are 100mA, 66.7mA and 50mA respectively.
[0033] Table 1
[0034] Charge
[0035] performance
[0036] Note: All discharge systems above are 1.0C (50mA) constant current discharge to 3.0V cut-off. C in the table 1 is the first discharge capacity; N is the maximum number of cycles for which the discharge capacity ...
Example Embodiment
[0038] Example 2
[0039] 452026HS10C high-rate polymer lithium-ion battery with a rated capacity of 130mAh and a 1C rate current of 130mA.
[0040] According to formula (4), select the original constant current fast charging current I 1 It is the 6C rate current (780mA), and the constant current charging cut-off voltage U is obtained according to the formula (5) 1 is 4.41V.
[0041]According to formulas (2) and (3), the values of n are 1, 2, and the values of m are 2, 3, and 4, respectively, and the constant current charging current I is obtained. 2 They are 715mA and 650mA respectively; the constant voltage (4.41V) charging cut-off currents are 390mA, 260mA and 195mA respectively.
[0042] Table 2
[0043]
[0044]
[0045] Note: All the above discharge regimes are 1.0C (130mA) constant current discharge to 3.0V cut-off. C in the table 1 is the first discharge capacity; N is the maximum cycle number of the discharge capacity not less than 80% of...
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