# US 12,603,335 B2 · Single battery pack inverter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,335 B2 - Document ID: US12603335B2 - Status: Granted - Kind: B2 - Application number: 17/206,951 - Filed: 2021-03-19 - Published: 2021-09-23 - Granted: 2026-04-14 - Earliest claimed: 2020-03-19 - Assignees: Milwaukee Electric Tool Corporation - Applicants: Milwaukee Electric Tool Corporation - Inventors: Alexander J. Goodman; Andrew Lentz - Web page: https://patentgrep.com/patent/US12603335B2 ## CPC - H01M 10/46: Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00) - H02M 1/327: {against abnormal temperatures} - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H01M 50/247: specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers - H02J 7/751: {concerning the insertion or the connection of the batteries} - H02J 7/855: {with circuits adapted for supplying loads from the battery} - H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - H02M 7/48: using discharge tubes with control electrode or semiconductor devices with control electrode - H02J 7/65: against overtemperature - H02J 7/82: Control of state of charge [SOC] - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL 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) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Embodiments described herein provide a single battery pack inverter that reduces cost and improves user experience at a worksite. Single battery pack inverters described herein provide a housing, a battery pack interface provided on a first surface of the housing to receive a power tool battery pack, an output interface provided on a second surface of the housing for powering external devices, and an inverter circuit in the housing for converting direct-current (DC) power from the power tool battery pack to alternating-current (AC) power provided at the AC outlet. The single battery pack inverters also include a hanging hook provided on the housing and configured to be pivotable between a first position and a second position. The hanging hook enables the single battery pack inverter to hang onto a support when the hanging hook is in the second position. ## Claims ### Claim 1 A single battery pack inverter comprising: a housing; a battery pack interface provided on the housing to receive a power tool battery pack; an output interface provided on the housing for powering one or more external devices; an inverter circuit in the housing configured to convert direct-current (“DC”) power from the power tool battery pack to alternating-current (“AC”) power provided at the output interface; a fan included within the housing, the fan configured to control an air flow through the single battery pack inverter; and a hanging hook provided on the housing and configured to be pivotable between a first position and a second position, wherein the hanging hook enables the single battery pack inverter to be supported on a support when the hanging hook is in the second position, and wherein the hanging hook is positioned on a surface of the housing when the hanging hook is in the first position. ### Claim 2 (depends on 1) The single battery pack inverter of claim 1, wherein: the housing has a height within a range of approximately 66 millimeters (mm) to approximately 75 mm; the housing has a width within a range of approximately 60 mm to approximately 80 mm; the housing has a depth within a range of approximately 85 mm to approximately 95 mm. ### Claim 3 (depends on 1) The single battery pack inverter of claim 1, wherein a weight of the single battery pack inverter is less than 1 pound. ### Claim 4 (depends on 1) The single battery pack inverter of claim 1, further comprising a fuel gauge indicating a charge level of the power tool battery pack. ### Claim 5 (depends on 1) The single battery pack inverter of claim 1, wherein the hanging hook is fixed on the surface of the housing using a fastening member. ### Claim 6 (depends on 5) The single battery pack inverter of claim 5, wherein the hanging hook includes an L-shaped hanging portion and a pivoting portion. ### Claim 7 (depends on 6) The single battery inverter of claim 6, wherein the fastening member includes: a flat portion fastened to the surface using the fastening member; and a hook receiving portion having an opening configured to receive the pivoting portion, wherein the hanging hook pivots about the pivoting portion and the hook receiving portion. ### Claim 8 (depends on 7) The single battery pack inverter of claim 7, wherein the L-shaped hanging portion extends from the pivoting portion on a first side of the hook receiving portion, the single battery pack inverter further comprising: a blocking bar extending from a second side of the hook receiving portion and configured to reduce axial movement of the hanging hook, wherein the blocking bar extends in a direction perpendicular to an axial direction of the pivoting portion. ### Claim 9 (depends on 8) The single battery pack inverter of claim 8, wherein: the hook receiving portion further comprises a first pair of grooves and a second pair of grooves on the second side of the hook receiving portion; the blocking bar rests in the first pair of grooves when the hanging portion is pivoted to the first position; and the blocking bar rests in the second pair of grooves when the hanging portion is pivoted to the second position. ### Claim 10 (depends on 9) The single battery pack inverter of claim 9, further comprising a key hole provided on the housing and configured to receive a hanging fastener. ### Claim 11 (depends on 1) The single battery pack inverter of claim 1, wherein the power tool battery pack interface includes: stepped grooves configured to slidable receive the power tool battery pack; and a terminal block supported on the power tool battery pack interface and configured to mechanically and electrically interface with a corresponding terminal block of the power tool battery pack. ### Claim 12 A single battery pack inverter comprising: a housing, the housing including a height within a range of approximately 66 millimeters (mm) to approximately 75 mm, a width within a range of approximately 60 mm to approximately 80 mm, and a depth within a range of approximately 85 mm to approximately 95 mm; a battery pack interface provided on a first surface of the housing and configured to receive a power tool battery pack; an output interface provided on a second surface of the housing for powering external devices, the second surface provided on an opposite side of the housing as the first surface, the output interface including an alternating-current (“AC”) outlet, and a direct-current (“DC”) outlet; a user interface provided on the second surface of the housing, the user interface including: an overload indicator configured to be illuminated when a load output of the single battery pack inverter exceeds a predetermined load threshold, an over-temperature indicator configured to be illuminated when a temperature of the single battery pack inverter exceeds a predetermined temperature threshold; and an inverter circuit in the housing for converting DC power from the power tool battery pack to AC power provided at the AC outlet. ### Claim 13 (depends on 12) The single battery pack inverter of claim 12, wherein the user interface further comprises: an AC output enable button configured to enable and disable the AC outlet; and a DC output enable button configured to enable and disable the DC outlet. ### Claim 14 (depends on 13) The single battery pack inverter of claim 13, wherein: the AC output enable button is a back-lit push button and is configured to be toggled to enable and disable the AC outlet; the AC output enable button is illuminated when the AC outlet is enabled; and the AC output enable button is not illuminated when the AC outlet is disabled. ### Claim 15 (depends on 14) The single battery pack inverter of claim 14, wherein: the DC output enable button is a back-lit push button and is configured to be toggled to enable and disable the DC outlet; the DC output enable button is illuminated when the DC outlet is enabled; and the DC output enable button is not illuminated when the DC outlet is disabled. ### Claim 16 (depends on 14) The single battery pack inverter of claim 14, wherein the DC outlet is a first DC outlet, the output interface further comprising: a second DC outlet powered by the battery pack, wherein the DC output enable button is configured to enabled and disable both the first DC outlet and the second DC outlet. ### Claim 17 (depends on 16) The single battery pack inverter of claim 16, wherein the AC outlet, the first DC outlet, and the second DC outlet are configured to be simultaneously enabled.