# US 10,122,169 B2 · Power management devices and kits including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,169 B2 - Document ID: US10122169B2 - Status: Granted - Kind: B2 - Application number: 15/125,962 - Filed: 2015-03-19 - Published: 2017-06-22 - Granted: 2018-11-06 - Earliest claimed: 2014-03-19 - Assignees: Qml, LLC - Applicants: Qml, LLC - Inventors: Qui Moc Lam - Web page: https://patentgrep.com/patent/US10122169B2 ## CPC - H02J 3/381: {Dispersed generators} - H02J 9/062: {for AC powered loads} - H02M 7/44: by static converters - H02J 9/00: Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting - H02J 9/061: {for DC powered loads} - H02J 2101/24: Photovoltaics - H02J 2101/30: Fuel cells - Y02B 10/70: Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies - Y02B 90/10: Applications of fuel cells in buildings - Y02E 10/56: Power conversion systems, e.g. maximum power point trackers - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The present invention provides a power management device. In one embodiment, the device includes: a line power input; a line power output; an inverter in communication with one or more DC power sources, the inverter adapted and configured to receive DC power from a DC power source and output line power; a DC transformer in communication with the line power input, the DC transformer adapted and configured to change line power to DC power; a first relay; a second relay; and a third relay. If line power is provided via the line power input: the first relay is adapted and configured to electrically couple the line power input to the line power output; the second relay is adapted to deactivate the inverter; and the third relay is adapted to electrically couple the DC transformer to the one or more DC power sources. ## Claims ### Claim 1 A power management device comprising: a line power input; a line power output; an inverter in communication with one or more DC power sources, the inverter adapted and configured to receive DC power from a DC power source and output line power; a DC transformer in communication with the line power input, the DC transformer adapted and configured to change line power to DC power; a first relay; a second relay; a third relay; a sump pump; a first timer programmed to periodically interrupt a flow of electricity from the line power input; a second timer programmed to periodically cause the sump pump to run regardless of whether a float switch is triggered; a sensor programmed to detect whether vibrations indicative of operation of the sump pump occur; and an alarm programmed to generate an alert if the sensor does not detect vibrations when the second timer periodically causes the sump pump to run; wherein: if line power is provided via the line power input: the first relay is adapted and configured to electrically couple the line power input to the line power output; the second relay is adapted to deactivate the inverter; and the third relay is adapted to electrically couple the DC transformer to the one or more DC power sources; and if line power is not provided via the line power input: the first relay is adapted and configured to electrically couple the inverter to the line power output; the second relay is adapted to activate the inverter; and the third relay is adapted to disconnect the DC transformer from the one or more DC power sources. ### Claim 2 (depends on 1) The power management device of claim 1, wherein the line power input includes a plug adapted and configured for removable coupling with an electrical receptacle. ### Claim 3 (depends on 2) The power management device of claim 2, wherein the plug is NEMA-compliant. ### Claim 4 (depends on 1) The power management device of claim 1, wherein the line power input includes an appliance coupler or an interconnection coupler. ### Claim 5 (depends on 4) The power management device of claim 4, wherein the appliance coupler or the interconnection coupler are IEC-60320-compliant. ### Claim 6 (depends on 1) The power management device of claim 1, wherein the line power output is an electrical receptacle. ### Claim 7 (depends on 6) The power management device of claim 6, wherein the electrical receptacle is NEMA-compliant. ### Claim 8 (depends on 1) The power management device of claim 1, further comprising: a housing. ### Claim 9 (depends on 8) The power management device of claim 8 wherein the housing has a profile substantially approximating a one-gang electrical box. ### Claim 10 (depends on 1) The power management device of claim 1, wherein the inverter is a 2,000 Watt continuous, 4,000 Watt peak inverter. ### Claim 11 (depends on 1) The power management device of claim 1, wherein the one or more DC power sources include one or more batteries. ### Claim 12 (depends on 1) The power management device of claim 1, wherein the one or more batteries are 12 Volt batteries. ### Claim 13 (depends on 12) The power management device of claim 12, wherein the one or more DC power sources include one or more selected from the group consisting of: flywheels, solar cells, and fuel cells. ### Claim 14 (depends on 1) The power management device of claim 1, wherein the line power is 120 Volt. ### Claim 15 (depends on 1) The kit of claim 1, wherein the one or more DC power sources include one or more batteries. ### Claim 16 (depends on 15) The kit of claim 15, wherein the one or more batteries are 12 Volt batteries. ### Claim 17 (depends on 1) The kit of claim 1, wherein the one or more DC power sources include one or more selected from the group consisting of: flywheels, solar cells, and fuel cells.