Relay for use with multiple power sources
First Claim
1. A system, comprising:
- a load including a rechargeable battery;
a first relay electrically coupled to the rechargeable battery and a first terminal, wherein a first power source is coupleable with the first terminal;
a second relay electrically coupled to a second terminal, wherein a second power source is coupleable with the second terminal; and
a first relay contactor of the first relay, the first relay contactor operable for switching between a first contact pin electrically connected to the first terminal, and a second contact pin electrically connected in series to a second relay contactor of the second relay,wherein the load is coupled with at least one of the following in the case that a battery charger coupled to the rechargeable battery detects a voltage of the rechargeable battery is below a predetermined threshold;
the first terminal, the second terminal, and a third power source, wherein a power supply is provided to the load by the first power source in the case that the first power source is electrically coupled to the first terminal.
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Accused Products
Abstract
Provided herein is a relay architecture for selecting between multiple power sources. In one approach, a first relay and first power source are electrically coupled to a first terminal. A second relay and second power source are electrically coupleable to a second terminal and to the first relay. A load is electrically coupled with at least one of the following in the case that a load voltage is below a predetermined threshold: the first terminal, the second terminal, and a third power source, wherein a power supply is provided to the load by the first power source in the case that the first power source is coupled to the first terminal. The power supply is provided to the load by the second power source when the second power source is coupled to the second terminal and the first power source is disconnected from the first terminal.
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Citations
18 Claims
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1. A system, comprising:
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a load including a rechargeable battery; a first relay electrically coupled to the rechargeable battery and a first terminal, wherein a first power source is coupleable with the first terminal; a second relay electrically coupled to a second terminal, wherein a second power source is coupleable with the second terminal; and a first relay contactor of the first relay, the first relay contactor operable for switching between a first contact pin electrically connected to the first terminal, and a second contact pin electrically connected in series to a second relay contactor of the second relay, wherein the load is coupled with at least one of the following in the case that a battery charger coupled to the rechargeable battery detects a voltage of the rechargeable battery is below a predetermined threshold;
the first terminal, the second terminal, and a third power source, wherein a power supply is provided to the load by the first power source in the case that the first power source is electrically coupled to the first terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A circuit, comprising:
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a load including a rechargeable battery; a first relay electrically coupled to a first terminal, wherein a first direct current (DC) power source is coupleable with the first terminal; and a second relay connected to the rechargeable battery and the first relay by a power line, wherein the second relay is electrically coupled to a second terminal, and wherein a second DC power source is coupleable with the second terminal; a first relay contactor of the first relay, the first relay contactor operable for switching between a first contact pin electrically connected to the first terminal, and a second contact pin electrically connected in series to a second relay contactor of the second relay, wherein the load is electrically coupled with at least one of the following in the case that a battery charger electrically coupled to the rechargeable battery detects a voltage of the rechargeable battery is below a predetermined threshold;
the first terminal, the second terminal, and a third DC power source, wherein a power supply is provided to the load by the first DC power source in the case that the first power source is electrically coupled to the first terminal. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for selecting between a plurality of power sources, comprising:
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electrically coupling a first relay to a first terminal, wherein a first power source is coupleable with the first terminal; electrically coupling a second relay to a second terminal, wherein a second power source is coupleable with the second terminal; electrically connecting a first contact pin of a first relay contactor of the first relay to the first terminal, and electrically coupling, in series, a second contact pin of the first relay contactor to a second relay contactor of the second relay; monitoring a load voltage of a rechargeable auxiliary battery; and providing a power supply to the rechargeable auxiliary battery from one of the following in the case that a battery charger coupled to the rechargeable auxiliary battery detects a voltage of the rechargeable auxiliary battery is below a predetermined threshold;
the first power source, the second power source, and a third power source,wherein the power supply is provided to the rechargeable auxiliary battery by the first power source in the case that the first power source is electrically coupled to the first terminal, and wherein the power supply is provided to the rechargeable auxiliary battery by the second power source in the case that the second power source is electrically coupled to the second terminal and the first power source is disconnected from the first terminal. - View Dependent Claims (15, 16, 17, 18)
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Specification