# US 11,310,880 B2 · LED battery backup lamp > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,880 B2 - Document ID: US11310880B2 - Status: Granted - Kind: B2 - Application number: 16/617,495 - Filed: 2018-05-11 - Published: 2020-04-09 - Granted: 2022-04-19 - Earliest claimed: 2017-05-26 - Assignees: Savant Technologies LLC - Applicants: Consumer Lighting (U.S.), LLC - Inventors: Raghu Ramaiah; James William Firis; Morgan Lane McMahon - Web page: https://patentgrep.com/patent/US11310880B2 ## CPC - H05B 45/37: Converter circuits - F21K 9/272: Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts (F21K9/278 takes precedence) - F21S 9/022: {Emergency lighting devices} - F21V 23/003: {the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array} - F21V 23/02: the elements being transformers, impedances {or power supply units, e.g. a transformer with a rectifier} - H02J 7/663: {using battery or load disconnect circuits (H02J9/002 takes precedence)} - H02J 7/80: including monitoring or indicating arrangements - H02J 9/061: {for DC powered loads} - H05B 45/357: specially adapted for retrofit LED light sources - F21S 9/02: the power supply being a battery or accumulator - F21Y 2115/10: Light-emitting diodes [LED] - H05B 45/345: Current stabilisation; Maintaining constant current - H05B 45/38: using boost topology - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract An LED lamp includes a housing having an endcap, an optical portion, and components located within the housing, the components including a plurality of LED segments and a reconfiguration circuit configured to route LED segment electrical connections from a serial to a parallel mode, an LED driver circuit, a line sense circuit to detect presence/absence of AC line voltage, and a rechargeable battery connected to a boost driver circuit to provide electrical power to the LED light source in the absence of line voltage, and a control processor to monitor and control one or more of the plurality of components. The LED lamp configured to illuminate all LED segments irrespective of the presence or absence of the line voltage. ## Claims ### Claim 1 An LED lamp comprising: a housing having an endcap, an optical portion, and a plurality of components located within the housing, the plurality of components including: an LED light source having a plurality of LED segments and a reconfiguration circuit; the reconfiguration circuit configured to route electrical connections among the plurality of LED segments from between a serial mode to a parallel mode of connection; an LED driver circuit configured to provide power to the LED light source; a line sense circuit configured to detect at least one of a presence and an absence of an AC line voltage; a rechargeable battery connected to a boost driver circuit, the rechargeable battery and the boost driver circuit configured to provide electrical power to the LED light source in the absence of the AC line voltage; and a control processor in communication with one or more other of the plurality of components across a data/control bus, the control processor executing executable instructions that cause the control processor to at least one of monitor and control the one or more other of the plurality of components. ### Claim 2 (depends on 1) The LED lamp of claim 1, including the housing having a form factor to fit into an existing lighting fixture. ### Claim 3 (depends on 1) The LED lamp of claim 1, including the LED light source providing an about uniform illumination intensity in both the serial and the parallel connection modes. ### Claim 4 (depends on 1) The LED lamp of claim 1, including the reconfiguration of the LED segment interconnections reducing an LED string voltage by a predetermined factor. ### Claim 5 (depends on 1) The LED lamp of claim 1, the plurality of components including a battery protection circuit having a low power switch configured to disconnect at least a portion of the plurality of components from a voltage supply. ### Claim 6 (depends on 1) The LED lamp of claim 1, the plurality of components including a linear regulator configured to provide an operating current to the control processor. ### Claim 7 (depends on 1) The LED lamp of claim 1, including at least a portion of the plurality of components mounted on a printed circuit board, the printed circuit board including an aperture defined by walls. ### Claim 8 (depends on 7) The LED lamp of claim 7, the plurality of components including a battery, the battery positioned at least partially within the aperture. ### Claim 9 (depends on 1) The LED lamp of claim 1, the plurality of components including a battery monitor configured to provide a signal to the control processor, the signal causing the control processor to execute instructions that cause the control processor to implement one of an over voltage protection operation and an under voltage protection operation. ### Claim 10 (depends on 1) The LED lamp of claim 1, the plurality of components including a temperature monitor configured to monitor battery thermal conditions, and provide a signal to the control processor in an out of tolerance condition. ### Claim 11 (depends on 1) The LED lamp of claim 1, the plurality of components including a battery charge module configured to provide a charge current to the rechargeable battery. ### Claim 12 (depends on 1) The LED lamp of claim 1, the plurality of components including a secondary power module configured to provide a charge current to the rechargeable battery and to provide operating power to the control processor during periods of AC line voltage absence. ### Claim 13 (depends on 1) The LED lamp of claim 1, including a test button located on an external surface of the housing, the test button configured to initiate a status self-test of the rechargeable battery. ### Claim 14 (depends on 13) The LED lamp of claim 13, including the self-test configured to cause the reconfiguration circuit to place the LED light source in a reduced illumination state and cycle the boost driver circuit a predetermined amount. ### Claim 15 (depends on 13) The LED lamp of claim 13, including the test button configured to cause the LED lamp to enter a sleep/transport mode. ### Claim 16 (depends on 1) The LED lamp of claim 1, including the line sense circuit having a two-wire operational mode configured to monitor an always-on AC line voltage at input terminals. ### Claim 17 (depends on 16) The LED lamp of claim 16, including the line sense circuit configured to provide a trigger to the control processor based on an absence of power at the input terminals, the trigger causing the control processor to control the LED lamp entry into a battery backup mode. ### Claim 18 (depends on 1) The LED lamp of claim 1, the line sense circuit including: a first sense channel configured to monitor a two-line voltage presence; a second sense channel configured to monitor an AC line voltage presence; and an isolator circuit configured to isolate the first and second sense channels from an output circuit; wherein the output circuit configured to provide a first sense output signal and a second sense output signal based on statuses of the respective first and second sense channel. ### Claim 19 (depends on 10) The LED lamp of claim 10, including, in response to the out of tolerance condition signal from the temperature monitor, the control processor configured to control the reconfiguration circuit to switch the LED segment electrical connections to the parallel mode. ### Claim 20 (depends on 1) The LED lamp of claim 1, including the LED light source having a parallel mode operating voltage that is in the range of about ½ to 1/12 of a series mode operating voltage.