LED lighting system with battery for demand management and emergency lighting
地域：
CO
CO Boulder
摘要
This disclosure describes systems, methods, and apparatus for a combined LED driver and emergency backup battery system. The LED driver can include current regulation circuitry as well as a bus enabling charging and discharging of an energy storage device from and to the bus. A master controller can control charging and discharging of the energy storage device via a controller of an energy storage management system, and also communicate with the current regulation circuitry to control a balance of power between an AC mains, the energy storage device, and driving of an LED light source. Accessories may be coupled to the bus and receive low voltage power from the bus and optionally receive commands from the master controller and provide sensed data back to the controller. A wireless network interface to the master controller can enable system states based on electrical power company indications and instructions.
說明書
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The present Application for Patent claims priority to Provisional Application No. 62/305,442 entitled “LED LIGHTING SYSTEM WITH BATTERY FOR DEMAND MANAGEMENT AND EMERGENCY LIGHTING” filed Mar. 8, 2016, and assigned to the assignee hereof and hereby expressly incorporated by reference herein.
The present disclosure relates generally to LED lighting. In particular, but not by way of limitation, the present disclosure relates to systems, methods and apparatuses for LED lighting having a backup battery.
While the majority of light for commercial spaces are powered from mains power, it is a requirement to provide a certain portion of the lighting with battery backup. The battery serves as an alternate power supply in the event the mains supply of electrical utility power is interrupted. This allows sufficient lighting so the occupied space will allow the safe egress of people. The illumination level is ordinarily specified by building codes.
At present, the battery backup system and the LED driver, both of which are separately connected to the mains power, are usually also separately controlled relative to the LED light, and operate independently of each other.
Throughout the figures, lines with arrows represent control and feedback signals, while lines without arrows represent the transfer of electrical power.
權(quán)利要求
What is claimed is:1. An LED driver system having a backup energy source, the LED driver system comprising:an input circuit for the LED driver system configured for coupling to a power source, in which the input circuit includes at least two outputs; a light source comprising one or more light emitting diodes; a driver circuit connected to a first of the at least two outputs from the input circuit, the driver circuit configured to selectively drive the light source as a first power source; a power backup system connected to a second of the at least two outputs from the input circuit, the power backup system including an energy storage device, the backup storage system including a switch having at least an open position and a closed position that electrically connects the energy storage device to the light source when the switch is in the closed position so that the energy storage device can provide a second power source to drive the light source, wherein when the switch of the power backup system is in the closed position the light source is driven by a hybrid of both the first and second power sources; and a single master controller determining the power transferred from the power backup system and the driver circuit to the light source, wherein the single master controller is in communication with the power backup system and the driver circuit through a single common bus. 2. The LED driver system of claim 1 , wherein when the switch of the power backup system is in the closed position the driver circuit and the energy storage backup system are in parallel between the input circuit and the light source. 3. The LED driver system of claim 2 , wherein when the switch of the power backup system is in the open position, the light source is driven solely by the first power source that is provided by the driver circuit. 4. The LED driver system of claim 3 , wherein the driver circuit includes at least one switch for disconnecting the driver circuit for powering the light source with the first power source, wherein the at least one switch for disconnecting the driver circuit is open, the light source is driven only by the second power source that is provided by the power backup system. 5. The LED driver system of claim 1 , wherein the power source is an AC main power source, wherein the driver circuit includes a voltage regulation circuit coupled to the power source, the voltage regulation circuit receiving AC or rectified AC power; and a voltage to current converter circuit having a regulated current output configured to drive the light. 6. The LED driver system of claim 1 , wherein the energy storage device is removeable. 7. The LED driver system of claim 5 , wherein the power backup system comprises a converter controlling a voltage on the energy storage device and charging and discharging rates of the energy storage device; and a controller controlling the converter, wherein the controller receives feedback from the converter. 8. The LED driver of claim 1 , wherein the master controller is programmed, coded, or wired to control driving the light source from a simultaneous combination of the energy storage device and the power source; simultaneous charging the energy storage device and driving the light source from the power source; and driving the light source from the energy storage device when the power source is not available. 9. The LED driver system of claim 1 , wherein the switch for the backup power system has a position to connect to an inverter. 10. The LED driver system of claim 1 , wherein the master controller adjusts a balance of power sourced from the power source and the energy storage device, or a balance of power distribution between charging the energy storage device and driving the light source, the adjusting being in response to data from an electrical power company. 11. The LED driver system of claim 10 , wherein the data is electricity pricing. 12. The LED driver system of claim 11 , further comprising an optical sensor arranged proximal to the light source and coupled to the master controller to provide luminosity feedback from the light source for maintaining a consistent light source output.
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