Battery Performance Under high Temperature Exposure

摘要

A battery system for a portable information handling system may modify charging parameters based on temperature exposure of a battery. When the battery is charged and exposed to a high temperature, the battery may be discharged to a lower voltage. After a cumulative period of exposure to a high temperature, a top-of-charge (TOC) voltage may be permanently reduced for the battery. Prior to charging at a high temperature, the TOC voltage may be reduced for a next charge cycle. Reducing the TOC voltage may minimize adverse effects for battery performance.

主权项

1. A method for charging a battery, comprising:
when the battery is charged and the battery temperature is greater than a first temperature threshold, discharging the battery to a first voltage threshold, wherein the first voltage threshold is less than a top-of-charge voltage of the battery; and when the battery temperature is greater than a second temperature threshold for a first duration, permanently reducing the top-of-charge voltage to a second voltage threshold, wherein the second voltage threshold is less than the maximum charge voltage of the battery.