# US 10,455,655 B2 · Emergency lighting system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,655 B2 - Document ID: US10455655B2 - Status: Granted - Kind: B2 - Application number: 15/794,143 - Filed: 2017-10-26 - Published: 2018-02-15 - Granted: 2019-10-22 - Earliest claimed: 2014-05-30 - Assignees: ABL IP Holding LLC - Applicants: ABL IP Holding LLC - Inventors: Yan Rodriguez; James C. Johnson; Ray Altenburger; Allen Carmichael; Dean Mavis - Web page: https://patentgrep.com/patent/US10455655B2 ## CPC - H02J 9/061: {for DC powered loads} - H05B 45/375: using buck topology - H05B 45/38: using boost topology - H05B 47/105: in response to determined parameters - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract Battery charge function may be in an LED driver which eliminates the duplication of line interface circuitry. A single line interface circuit provides the input power conversion for both the battery charge function and normal operation of the LED driver. During a loss of power, the LEDs may be controlled using power from the battery backup module. ## Claims ### Claim 1 An emergency lighting system, comprising: a battery backup module; and an LED driver module, wherein the LED driver module includes line interface circuitry for connecting the LED driver module to a power supply, and a plurality of outputs, wherein a first output comprises an interface capable of controlling a plurality of LEDs and a second output is connected to a charging input of the battery backup module and is capable of providing a charging current, via a channel of the LED diver module, to charge the battery backup module when the power supply is uninterrupted; wherein the battery backup module or the LED driver module receives at least one control input for receiving external control signals; wherein the battery backup module and the LED driver module include a shared communication channel for communicating control signals; wherein the battery backup module includes an output connected to an intermediate power input of the LED driver module for providing DC voltage during an interruption in the power supply; wherein the provided DC voltage is sufficient to power at least a portion of the LED driver module and at least one of the plurality of LEDs; wherein the battery backup module or the LED driver module receives a status input capable of receiving information about a status of the power supply, indicating if the power supply is interrupted; and wherein the LED driver module controls the plurality of LEDs during the interruption in the power supply. ### Claim 2 (depends on 1) The system of claim 1, wherein: the battery backup module further includes the at least one control input, and upon receiving a control signal via the at least one control input, the battery backup module provides the control signal to the LED driver module. ### Claim 3 (depends on 1) The system of claim 1, wherein the LED driver module further includes the at least one control input. ### Claim 4 (depends on 1) The system of claim 1, wherein the battery backup module further includes the status input capable of receiving information about the status of the power supply. ### Claim 5 (depends on 1) The system of claim 1, wherein the LED driver module further includes the status input capable of receiving information about the status of the power supply. ### Claim 6 (depends on 1) The system of claim 1, wherein the external control signals comprise information related to one or more of an input selecting a power status, a dimming level, or a color level of the plurality of LEDs. ### Claim 7 (depends on 1) The system of claim 1, wherein the external control signals comprise information related to one or more of a test of the system, a test of a subcomponent of the system, or a monitored level of the system. ### Claim 8 An emergency lighting system, comprising: a battery backup module, wherein the battery backup module includes at least one control input for receiving external control signals, and at least one control output for providing the external control signals to an LED driver module; and the LED driver module, wherein the LED driver module includes line interface circuitry for connecting the LED driver module to an unswitched power supply, at least one control input for receiving the external control signals from the battery backup module, and a plurality of outputs, wherein a first output comprises an interface capable of controlling a plurality of LEDs and a second output is connected to a charging input of the battery backup module and is capable of providing a charging current, via a channel of the LED diver module, to charge the battery backup module when the power supply is uninterrupted, wherein the battery backup module and the LED driver module include a shared communication channel for communicating lighting control signals, and wherein the battery backup module includes an output connected to an intermediate power input of the LED driver module for providing DC voltage during an interruption in the power supply; wherein the provided DC voltage is sufficient to power at least a portion of the LED driver module and at least one of the plurality of LEDs; wherein the LED driver module receives a status input capable of receiving information about a status of the power supply, indicating if the power supply is interrupted; and wherein the LED driver module controls the plurality of LEDs during the interruption in the power supply. ### Claim 9 (depends on 8) The system of claim 8, wherein the external control signals comprise information related to one or more of an input selecting a power status, a dimming level, or a color level of the plurality of LEDs. ### Claim 10 (depends on 8) The system of claim 8, wherein the external control signals comprise information related to one or more of a test of the system, a test of a subcomponent of the system, or a monitored level of the system. ### Claim 11 An emergency lighting system, comprising: an LED driver module, wherein the LED driver module includes line interface circuitry for connecting the LED driver module to a power supply, at least one control input for receiving external control signals, and a plurality of outputs, wherein a first output comprises an interface capable of controlling the plurality of LEDs, a second output provides the control signals to the input of a battery backup module, and a third output is connected to a charging input of the battery backup module and is capable of providing, via a channel of the LED diver module, a charging current to charge the battery backup module when the power supply is uninterrupted; and the battery backup module, wherein the battery backup module includes input connections capable of receiving the first output from the LED driver module and providing the first output to a plurality of LEDs, and a voltage output connected to an intermediate power input of the LED driver module for providing DC voltage during an interruption in the power supply, wherein the provided DC voltage is sufficient to power at least a portion of the LED driver module and at least one of the plurality of LEDs, wherein the battery backup module or the LED driver module receives a status input capable of receiving information about a status of the power supply, indicating if the power supply is interrupted; and wherein the LED driver module controls the plurality of LEDs during the interruption in the power supply. ### Claim 12 (depends on 11) The system of claim 11, wherein the battery backup module further includes at least one control input for receiving external control signals, and at least one control output for providing the external control signals to the at least one control input of the LED driver module. ### Claim 13 (depends on 11) The system of claim 11, wherein the external control signals comprise information related to one or more of an input selecting a power status, a dimming level, or a color level of the plurality of LEDs. ### Claim 14 (depends on 11) The system of claim 11, wherein the external control signals comprise information related to one or more of a test of the system, a test of a subcomponent of the system, or a monitored level of the system. ### Claim 15 An emergency lighting system, comprising: a battery backup module; and an LED driver module, wherein the LED driver module includes: line interface circuitry for connecting the LED driver module to a power supply, and a first output comprising a first interface capable of controlling power to a plurality of LEDs, wherein the battery backup module includes: a first input for receiving external control signals, wherein upon receiving an external control signal, the battery backup module provides the external control signal to the LED driver module, input connections capable of the first output from the first interface of the LED driver module and providing the first output to the plurality of LEDs, and a second output comprising a second interface capable of controlling at least one of the plurality of LEDs; and the LED driver module further includes: an input for receiving the external control signals provided by the battery backup module, and a second output connected to a charging input of the battery backup module and capable of providing, via a channel of the LED diver module, a charging current to charge the battery backup module when the power supply is uninterrupted; wherein the battery backup module or the LED driver module receives a status input capable of receiving information about a status of the power supply, indicating if the power supply is interrupted; and wherein the battery backup module controls the at least one of the plurality of LEDs via the second interface during the interruption in the power supply. ### Claim 16 (depends on 15) The system of claim 15, wherein the external control signals comprise information related to one or more of an input selecting a power status, a dimming level, or a color level of the plurality of LEDs. ### Claim 17 (depends on 15) The system of claim 15, wherein the external control signals comprise information related to one or more of a test of the system, a test of a subcomponent of the system, or a monitored level of the system.