US 12,206,078 B2
Charging method for electrochemical device, electronic device and readable storage medium
Yangsheng Cai, Dongguan (CN); Juan Jin, Dongguan (CN); Xiang Li, Dongguan (CN); and Feilong Guo, Dongguan (CN)
Assigned to DONGGUAN POWERAMP TECHNOLOGY LIMITED, Dongguan (CN)
Filed by DONGGUAN POWERAMP TECHNOLOGY LIMITED, Dongguan (CN)
Filed on Jun. 29, 2021, as Appl. No. 17/362,870.
Application 17/362,870 is a continuation of application No. PCT/CN2020/080850, filed on Mar. 24, 2020.
Prior Publication US 2021/0328275 A1, Oct. 21, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/44 (2006.01); H01M 4/525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 10/44 (2013.01) [H01M 4/525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for charging an electrochemical device, the charging comprising n cycle stages in sequence, wherein n is a positive integer greater than or equal to 2, the n cycle stages are respectively defined as ith cycle stages, i=2, 3, . . . , n, each of the ith cycle stages including a respective plurality of charging and discharging cycles, the method comprising:
for a (i-1)th cycle stage comprising a (i-1)th plurality of charging and discharging cycles:
for each of the (i-1)th plurality of charging and discharging cycles:
charging the electrochemical device until a voltage of the electrochemical device reaches a (i-1)th cut-off voltage; and
discharging the electrochemical device to a preset discharging cut-off voltage; and
for a ith cycle stage comprising a ith plurality of charging and discharging cycles:
for each of the ith plurality of charging and discharging cycles:
charging the electrochemical device until a voltage of the electrochemical device reaches a ith cut-off voltage, wherein the ith cut-off voltage is lower than the (i-1)th cut-off voltage; and
discharging the electrochemical device to the preset discharging cut-off voltage.