| 摘要 |
<p>Methods and apparatus for battery charging provide a charging cycle in which charging periods are separated by intervals. The intervals may include discharging periods. Typical charging sequences for nickel-metal hydride and nickel-cadmium batteries include charging periods having durations of 9 to 11 seconds during which a battery is charged at a rate between 1.9×C and 2.1×C and intervals which include discharging periods having durations of 0.9 to 1.1 seconds during which the battery is discharged at a rate between 0.19×C and 0.21×C. The charge-rest-discharge-rest pattern is repeated until a specified battery voltage is reached or another event triggers the end of the charging cycle. Charge times of about ½ hour can be achieved. Charging methods for lead acid batteries are disclosed in which charging pulses alternate with intervals during which the battery is not being charged. The charging current is stepwise reduced over a number of periods.</p> |
