Battery system configured to survive failure of one or more batteries
AssigneeQuallion LLC
InventorsLu Chow, Taison Tan, Hisashi Tsukamoto
Life of this patent
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Abstract
The battery system includes a battery pack having a plurality of power sources arranged in parallel groups that are connected in series. Each parallel group includes a plurality of power sources connected in parallel. Each power source includes a battery. The system also includes electronics configured to repeatedly charge the battery pack according to a charging protocol. The charging protocol is configured such that the voltage of any one battery in the battery pack does not exceed its maximum operational voltage after failure of a battery in the battery pack.
Claims17
A battery system, comprising:
- a battery pack having a plurality of parallel groups connected in series, each parallel group including a plurality of power sources connected in parallel, each power source including a battery;
- and
- electronics configured to discharge the battery pack according to a charging protocol, wherein
- the charging protocol includes repeatedly discharging the battery pack to a discharged pack voltage,
- the discharged pack voltage being the same before and after the failure of the battery,
- the charging protocol causing at least one of the batteries that has not failed to be discharged to a lower voltage after failure of the battery than that battery was discharged before the failure of the battery, and
- the charging protocol being configured such that the lower voltage to which each of the at least one batteries is discharged is greater than a minimum operational voltage of each one of the at least one batteries.
A method, comprising:
- repeatedly discharging a battery pack according to a charging protocol the battery pack having a plurality of parallel groups connected in series, each parallel group including a plurality of power sources connected in parallel, each power source including a battery, wherein
- the charging protocol includes repeatedly discharging the battery pack to a discharged pack voltage that is greater than a minimum operational voltage of the battery pack,
- the discharged pack voltage being the same before and after the failure of the battery,
- the charging protocol causing at least one of the batteries that has not failed to be discharged to a lower voltage after failure of the battery than that battery was discharged before the failure of the battery,
- the charging protocol being configured such that the lower voltage to which each of the at least one batteries is discharged is greater than a minimum operational voltage of each one of the at least one batteries.
Dependencies are inferred from the claim text.