METHOD AND APPARATUS FOR BATTERY-BACKED POWER SUPPLY AND BATTERY CHARGING
First Claim
1. A movable partition system, comprising:
- at least one movable partition;
a battery-backed power supply, comprising;
a power converter with an alternating current (AC) input and a direct current (DC) output;
a first diode operably coupled in a forward biased configuration between the DC output and a biased DC output;
a supply switch configured for selectively coupling the biased DC output to a supply output;
a battery operably coupled between a ground and a battery output;
a battery switch configured for selectively coupling the supply output to a battery-charge signal;
a current sensor operably coupled in series between the battery-charge signal and the battery output;
a second diode operably coupled between the battery output and the supply output; and
a controller configured for charging the battery by controlling the battery switch with a pulse-width modulation operation and configured for controlling the supply switch to cause the selective coupling between the biased DC output and the supply output; and
a movable partition controller operably coupled to the supply output and including a motor configured for displacing the at least one movable partition.
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Accused Products
Abstract
Apparatuses, systems, and methods for providing battery-backed power to movable partitions are disclosed. A power converter generates a DC output from an AC input. The DC output may be selectively decoupled from an enabled DC output such that the DC output can be monitored for acceptable operation in-situ. The enabled DC output may be selectively coupled to a battery output terminal. A charge current may be sensed between the enabled DC output and the battery output to control charging of the battery with a pulse-width modulation operation by controlling the selective coupling of the enabled DC output to the battery output. The enabled DC output and the battery output are coupled in a logical-or configuration to generate a supply output providing current from the enabled DC output and the battery. The supply output may drive a movable partition controller and a motor configured for opening and closing a movable partition.
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Citations
9 Claims
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1. A movable partition system, comprising:
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at least one movable partition; a battery-backed power supply, comprising; a power converter with an alternating current (AC) input and a direct current (DC) output; a first diode operably coupled in a forward biased configuration between the DC output and a biased DC output; a supply switch configured for selectively coupling the biased DC output to a supply output; a battery operably coupled between a ground and a battery output; a battery switch configured for selectively coupling the supply output to a battery-charge signal; a current sensor operably coupled in series between the battery-charge signal and the battery output; a second diode operably coupled between the battery output and the supply output; and a controller configured for charging the battery by controlling the battery switch with a pulse-width modulation operation and configured for controlling the supply switch to cause the selective coupling between the biased DC output and the supply output; and a movable partition controller operably coupled to the supply output and including a motor configured for displacing the at least one movable partition. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9)
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6. The movable partition system of claim 20, wherein the controller is further configured to control the pulse-width modulation operation by:
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operating the battery switch to couple the supply output to the battery output; sensing a charge current from the current sensor; calculating a charge-pulse duration correlated to the charge current; operating the battery switch to decouple the supply output from the battery output after the charge-pulse duration; waiting for a charge-cycle duration to complete; and repeating the operations of operating the battery switch to couple, sensing, calculating, operating the battery switch to decouple, and waiting.
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Specification