Title:
LITHIUM SECONDARY BATTERY CHARGING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/028563
Kind Code:
A1
Abstract:
Provided is a lithium secondary battery charging method, comprising: starting from Ic1, charging the battery at a constant current in sequence with a set current value; when charging with any current Ici, stopping the charging once the voltage reaches a corresponding Vi, and then constant current charging is conducted with a current Ici+1 until a cutoff voltage Vn is reached by charging with a current Icn. {Ic1,…, Ici,Ici+1,…,Icn} is a preset set of sequentially decreasing current values, and {V1,…,Vi,Vi+1,…,Vn} is a set of voltage values respectively corresponding to the current values. Vi≤Vi+1≤Vn, I0≥Icn≥I1. If it is determined that Icn is equal to I1, then the charging is ended; and if it is determined that Icn is greater than I1, the constant voltage charging is conducted with a voltage Vn until the current reaches I1, and then the charging is ended. The method can not only improve lithium precipitation of battery, but also improve charging speed of battery.
Inventors:
ZHANG YING (CN)
ZENG QIAO (CN)
LUO FUPING (CN)
WANG MENGMENG (CN)
ZENG QIAO (CN)
LUO FUPING (CN)
WANG MENGMENG (CN)
Application Number:
PCT/CN2017/096417
Publication Date:
February 15, 2018
Filing Date:
August 08, 2017
Export Citation:
Assignee:
DONGUAN AMPEREX TECH LIMITED (CN)
International Classes:
H01M10/44
Foreign References:
| CN101800344A | 2010-08-11 | |||
| JP2014087200A | 2014-05-12 | |||
| CN105375072A | 2016-03-02 | |||
| CN102742067A | 2012-10-17 | |||
| CN101154746A | 2008-04-02 | |||
| CN101953015A | 2011-01-19 | |||
| CN102769156A | 2012-11-07 | |||
| CN105634073A | 2016-06-01 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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