Battery charge control device
First Claim
1. A charge control device for providing a constant charge voltage with temperature compensation to a battery being charged by a constant current charger, comprising:
- a first electrical connector adapted to couple to a positive terminal of the battery;
a second electrical connector adapted to couple to a negative terminal of the battery; and
a current bypass circuit adapted to electrically couple to the positive and negative terminals of the battery through respective first and second electrical connectors, the current bypass circuit including a bypass path for a portion of a charge current from the constant current charger to flow, thereby maintaining a substantially constant voltage across the battery terminals at a particular temperature.
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Accused Products
Abstract
A charge control device for providing a constant charge voltage with temperature compensation to a battery being charged by a constant current charger is provided. The device includes a first electrical connector that couples to a positive terminal of the battery and a second electrical connector that couples to a negative terminal of the battery. A current bypass circuit electrically couples to the positive and negative terminals of the battery through respective first and second electrical connectors. The current bypass circuit includes a bypass path for a portion of a charge current from the constant current charger to flow, thereby maintaining a substantially constant voltage across the battery terminals at a particular temperature.
36 Citations
11 Claims
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1. A charge control device for providing a constant charge voltage with temperature compensation to a battery being charged by a constant current charger, comprising:
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a first electrical connector adapted to couple to a positive terminal of the battery;
a second electrical connector adapted to couple to a negative terminal of the battery; and
a current bypass circuit adapted to electrically couple to the positive and negative terminals of the battery through respective first and second electrical connectors, the current bypass circuit including a bypass path for a portion of a charge current from the constant current charger to flow, thereby maintaining a substantially constant voltage across the battery terminals at a particular temperature. - View Dependent Claims (2, 3, 4, 5)
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6. A method of providing a constant charge voltage with temperature compensation to a battery being charged by a constant current charger, comprising:
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(a) providing a first electrical connector adapted to couple to a positive terminal of the battery;
(b) providing a second electrical connector adapted to couple to a negative terminal of the battery; and
(c) providing a current bypass circuit adapted to electrically couple to the positive and negative terminals of the battery through respective first and second electrical connectors, the current bypass circuit including a bypass path for a portion of a charge current from the constant current charger to flow, thereby maintaining a substantially constant voltage across the battery terminals at a particular temperature. - View Dependent Claims (7, 8, 9, 10)
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11. A charge control device for providing a constant charge voltage with temperature compensation to a battery being charged by a constant current charger, comprising:
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a voltage sense and temperature compensation circuit adapted to connect across two terminals of the battery, and to sense changes in a temperature of the battery and to produce an output signal in response to the sensed battery temperature changes; and
a current bypass circuit electrically coupled the voltage sense and temperature compensation circuit, the current bypass circuit including a bypass path for a portion of a charge current from the constant current charger to flow, thereby maintaining a substantially constant voltage across the battery terminals at a particular temperature, the current bypass circuit adapted to vary the portion of the charge current flowing through the bypass path in response to the output signal received from the voltage sense and temperature compensation circuit.
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Specification