Cell battery fast charging method and system
AssigneeYazami IP PTE.LTD.
InventorRachid Yazami
Life of this patent
Estimating the term…
Abstract
A method for fast charging a battery cell provided with charge/discharge terminals to which a charging voltage can be applied with a flowing charging current, the method comprising the steps of: applying to terminals of the battery cell a plurality of constant voltage stages Vj, where Vj+1>Vj, j=1, 2 . . . , k, each voltage stage comprising intermittent nj voltage plateaus, between two successive voltage plateaus within a voltage stage, letting the charging current going to rest for a rest period, Rjp, 1≤p≤nj, the fast-charging method proceeding until either one of the following conditions is reached: a pre-set charge capacity or state of charge is reached, the cell temperature exceeds a pre-set limit value Tlim and the cell voltage has exceeded a pre-set limit value Vlim.
Claims13
A method for fast-charging a battery cell provided with charge/discharge terminals to which a charging voltage can be applied with a flowing pulse-like charging current, the method comprising the steps of:
- applying to terminals of the battery cell a plurality of constant voltage stages Vj, where Vj+>Vj, j=1, 2 . . . , k, each voltage stage comprising intermittent nj voltage plateaus,
- between two successive voltage plateaus within a voltage stage, letting the charging current go to zero for a rest period Rjp, 1≤p≤nj.
- the fast-charging method proceeding until any one of the following conditions is reached:
- a pre-set charge capacity or state of charge is reached,
- the battery cell temperature exceeds a pre-set limit value Tlim, or
- the battery cell voltage exceeds a pre-set limit value Vlim.
Dependencies are inferred from the claim text.