Assembled battery charging method and battery charging system
First Claim
1. A battery charging system, comprising:
- an assembled battery, in which a plurality of secondary batteries are connected in parallel using valve-regulated lead-acid batteries in which separators impregnated with electrolyte are arranged between mutually opposed plate-like positive electrodes and negative electrodes; and
a plurality of charging units that are provided corresponding to the respective secondary batteries and that charge the corresponding secondary battery, respectively, whereineach of the charging units;
executes multistage constant-current charging in which constant-current charging is repeated a preset plurality of times for supplying current of a prescribed set current value to each corresponding secondary battery until the terminal voltage of the each corresponding secondary battery reaches a prescribed charging cutoff voltage, and also the set current value is reduced each time the constant-current charging is repeated.
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Accused Products
Abstract
The present invention provides a battery charging system that includes: an assembled battery, in which a plurality of secondary batteries are connected in parallel using valve-regulated lead-acid batteries in which separators impregnated with electrolyte are arranged between mutually opposed plate-like positive electrodes and negative electrodes; and a plurality of charging units that are provided corresponding to the respective secondary batteries and that charge the corresponding secondary battery, respectively, wherein each of the charging units executes multistage constant-current charging in which constant-current charging is repeated a preset plurality of times for supplying current of a prescribed set current value to each corresponding secondary battery until the terminal voltage of the each corresponding secondary battery reaches a prescribed charging cutoff voltage, and also the set current value is reduced each time the constant-current charging is repeated.
40 Citations
24 Claims
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1. A battery charging system, comprising:
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an assembled battery, in which a plurality of secondary batteries are connected in parallel using valve-regulated lead-acid batteries in which separators impregnated with electrolyte are arranged between mutually opposed plate-like positive electrodes and negative electrodes; and a plurality of charging units that are provided corresponding to the respective secondary batteries and that charge the corresponding secondary battery, respectively, wherein each of the charging units; executes multistage constant-current charging in which constant-current charging is repeated a preset plurality of times for supplying current of a prescribed set current value to each corresponding secondary battery until the terminal voltage of the each corresponding secondary battery reaches a prescribed charging cutoff voltage, and also the set current value is reduced each time the constant-current charging is repeated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An assembled battery charging method for an assembled battery in which a plurality of secondary batteries are connected in parallel using valve-regulated lead-acid batteries in which separators impregnated with electrolyte are arranged between mutually opposed plate-like positive electrodes and negative electrodes, comprising:
a charging step of executing, by a plurality of charging units provided corresponding to the respective secondary batteries, multistage constant-current charging by repeating constant-current charging a preset plurality of times for supplying current of a prescribed set current value to each corresponding secondary battery until the terminal voltage of the each corresponding secondary battery reaches a prescribed charging cutoff voltage, and also by reducing the set current value each time the constant-current charging is repeated. - View Dependent Claims (22, 23, 24)
Specification