STATE OF CHARGE INDICATOR FOR A BATTERY CHARGER
First Claim
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1. A method for indicating state of charge of a battery being charged by a charger, comprising:
- supplying a charging current from a battery charger to a battery pack;
determining voltage of one of more battery cells residing in the battery pack; and
illuminating a visual indicator on the battery charger to indicate a state of charge of the battery pack, where brightness of the visual indicator correlates to the voltage of the battery cells in the battery pack.
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Abstract
A method is provided for indicating state of charge of a battery being charged by a charger. The method includes: supplying a charging current from a battery charger to a battery pack; determining voltage of battery cells residing in the battery pack; and illuminating a visual indicator on the battery charger to indicate state of charge of the battery pack, where brightness of the visual indicator correlates to the voltage of the battery cells in the battery pack.
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Citations
19 Claims
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1. A method for indicating state of charge of a battery being charged by a charger, comprising:
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supplying a charging current from a battery charger to a battery pack; determining voltage of one of more battery cells residing in the battery pack; and illuminating a visual indicator on the battery charger to indicate a state of charge of the battery pack, where brightness of the visual indicator correlates to the voltage of the battery cells in the battery pack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A battery charger that charges a battery pack coupled thereto, comprising:
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a visual indicator; a power supply module operable to supply a charging current from the battery charger to the battery pack; a voltage monitoring module operable to determine voltage of one or more battery cells in the battery pack; and a charge control module configured to receive the voltage of the battery cells from the voltage monitoring module and illuminate the visual indicator to indicate state of charge of the battery pack while the charging current is being delivered to the battery pack, where brightness of the visual indicator correlates to the voltage of the battery cells in the battery pack. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A battery charger that charges a battery pack coupled thereto, comprising:
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a visual indicator; a power supply module operable to supply a charging current from the battery charger to the battery pack; a voltage monitoring module operable to determine voltage of one or more battery cells in the battery pack; and a charge control module configured to receive the voltage of the battery cells from the voltage monitoring module and illuminate the visual indicator to indicate state of charge of the battery pack while the charging current is being delivered to the battery pack, where a rate at which the visual indicator is illuminated in accordance with the voltage of the battery cells. - View Dependent Claims (18, 19)
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Specification