Battery charger for vehicle-mounted equipment using engine operation as start timing determination
First Claim
1. A battery charger for an equipment adapted to be mounted on a motor vehicle for charging a rechargeable battery of said equipment, said motor vehicle having DC generator means driven by the engine of the vehicle and an vehicle battery charged by said DC generator, comprising:
- first sensor means for detecting when voltage of said vehicle battery is higher than a specified level;
second sensor means for detecting when said engine is running;
switch means connected between said vehicle battery and said rechargeable battery; and
timing means responsive to output signals from said first and second sensor means for causing said switch means to establish a path between said batteries for an interval sufficient to charge said rechargeable battery with a current supplied from the vehicle battery.
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Accused Products
Abstract
A battery charger for a vehicle-mounted equipment comprises a first sensor for detecting when the voltage of the vehicle battery is higher than a specified level. A second sensor is provided for detecting when the engine of the vehicle is running. The outputs of the sensors determine the start timing of a charging operation. A switch is connected between the vehicle battery and the equipment'"'"'s rechargeable battery. A timing circuit is responsive to the output signals of the first and second sensors for causing the switch to establish a path between the batteries for an interval sufficient to charge the rechargeable battery with a current supplied from the vehicle battery.
14 Citations
7 Claims
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1. A battery charger for an equipment adapted to be mounted on a motor vehicle for charging a rechargeable battery of said equipment, said motor vehicle having DC generator means driven by the engine of the vehicle and an vehicle battery charged by said DC generator, comprising:
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first sensor means for detecting when voltage of said vehicle battery is higher than a specified level; second sensor means for detecting when said engine is running; switch means connected between said vehicle battery and said rechargeable battery; and timing means responsive to output signals from said first and second sensor means for causing said switch means to establish a path between said batteries for an interval sufficient to charge said rechargeable battery with a current supplied from the vehicle battery. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification