Battery charging method
First Claim
1. A battery charging method comprising a temperature maintaining charging step which detects battery temperature, controls average charging current to make the battery temperature become equal to a holding temperature, and charges the battery while maintaining battery temperature at the holding temperature.
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Abstract
The battery charging method detects battery temperature and comprises a temperature maintaining charging step wherein average charging current is controlled to drive battery temperature to a holding temperature, and charging is performed while maintaining battery temperature at that holding temperature. In addition, a temperature increasing charging step is provided prior to the temperature maintaining charging step. The battery is charged with a current which raises battery temperature until the holding temperature is reached. When battery temperature rises to the holding temperature in the temperature increasing charging step, charging can transition to the temperature maintaining charging step.
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Citations
15 Claims
- 1. A battery charging method comprising a temperature maintaining charging step which detects battery temperature, controls average charging current to make the battery temperature become equal to a holding temperature, and charges the battery while maintaining battery temperature at the holding temperature.
Specification