Battery charging method
First Claim
1. A battery charging method which charges a plurality of rechargeable batteries connected in series, detects the voltage of each battery, discharges batteries that exceed a prescribed voltage, and charges while maintaining cell balance;
- and characterized in that the voltage of each battery is detectable, if the voltage of any battery exceeds the prescribed voltage, charging is performed for a specified charging time, subsequently only the battery that exceeds the prescribed voltage is discharged until its voltage drops to the prescribed voltage without discharging batteries that do not exceed the prescribed voltage, and thereby charging while balancing battery voltages.
2 Assignments
0 Petitions
Accused Products
Abstract
The battery charging method detects the voltage of each series connected battery, discharges batteries with voltage exceeding a prescribed voltage, and charges a plurality of batteries while maintaining cell balance. This charging method detects the voltage of each battery being charged and if any battery voltage exceeds the prescribed voltage, only the battery that exceeds the prescribed voltage is discharged, after a specified charging time, until its voltage drops to the prescribed voltage. Batteries that do not exceed the prescribed voltage are not discharged, and thereby all batteries are charged while balancing their voltages.
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Citations
7 Claims
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1. A battery charging method which charges a plurality of rechargeable batteries connected in series, detects the voltage of each battery, discharges batteries that exceed a prescribed voltage, and charges while maintaining cell balance;
and characterized in that the voltage of each battery is detectable, if the voltage of any battery exceeds the prescribed voltage, charging is performed for a specified charging time, subsequently only the battery that exceeds the prescribed voltage is discharged until its voltage drops to the prescribed voltage without discharging batteries that do not exceed the prescribed voltage, and thereby charging while balancing battery voltages. - View Dependent Claims (2, 3, 4, 5, 6, 7)
Specification