# US 11,114,878 B2 · High-power battery-powered portable power source > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,878 B2 - Document ID: US11114878B2 - Status: Granted - Kind: B2 - Application number: 16/363,793 - Filed: 2019-03-25 - Published: 2019-09-26 - Granted: 2021-09-07 - Earliest claimed: 2018-03-26 - Assignees: Milwaukee Electric Tool Corporation - Applicants: Milwaukee Electric Tool Corporation - Inventors: Dalton F. Hansen; Duane W. Wenzel; Emily C. Doberstein; Amanda M. Kachar; Dean W. Nowalis; Michael A. Matthews - Web page: https://patentgrep.com/patent/US11114878B2 ## CPC - H01M 10/46: Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00) - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H01M 10/488: {Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density} - 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 - H01M 50/256: Carrying devices, e.g. belts - H01M 50/264: for cells or batteries, e.g. straps, tie rods or peripheral frames - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - H02J 7/342: {The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging (with circuits for polarity protection H02J7/68)} - H02J 7/585: {Sequential battery discharge in systems with a plurality of batteries} - H02J 7/70: characterised by the mechanical construction - H02J 7/731: {specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence)} - H02J 7/751: {concerning the insertion or the connection of the batteries} - H01M 50/576: in response to theft - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - H02J 2207/20: Charging or discharging characterised by the power electronics converter - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - 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 A portable power source for power tools. The portable power source includes a housing defining a battery support and an power outlet, a circuit supported by the housing and including an input terminal on the battery support, an output terminal on the power outlet, and an inverter electrically connected between the input terminal and the output terminal, a battery power source including a battery housing supported on the battery support, at least one battery cell, and a battery terminal connected to the battery cell and electrically connectable to the input terminal, power being transferrable from the battery cell to the circuit to be output through the power outlet, and a frame connected to the housing and extending beyond a periphery of the housing and of the supported battery power source, the frame inhibiting contact with the housing and the battery power source. ## Claims ### Claim 1 A portable power source comprising: a housing supportable relative to a support surface, the housing having a first surface on the bottom of the housing facing the support surface and a second surface on a top of the housing facing away from the first surface, the housing including a first battery support on the first surface, a second battery support on the second surface, and a power outlet; a circuit supported by the housing and including a first input terminal on the first battery support, a second input terminal on the second battery support, an output terminal on the power outlet, and an inverter electrically connected between the input terminals and the output terminal; a first battery pack supportable on the first battery support and a second battery pack supportable on the second battery support, each battery pack including a battery housing supported on the associated battery support, a battery cell, and a battery terminal connected to the battery cell and electrically connectable to the associated input terminal, wherein power is transferrable from the battery cell of each battery pack to the circuit to be output through the power outlet. ### Claim 2 (depends on 1) The portable power source of claim 1, further comprising a frame connected to the housing and extending beyond a periphery of the housing and of the first battery pack and the second battery pack, wherein the frame extends beyond the periphery of the first battery pack and the second battery pack on all sides of the first battery pack and the second battery pack to protect the first battery pack and the second battery pack. ### Claim 3 (depends on 2) The portable power source of claim 2, wherein the frame further includes a first frame portion on a first side of the housing, a second frame portion on an opposite side of the housing, a pair of bars connected between the first frame portion and the second frame portion, and a handle connected between the bars, the handle extending perpendicular to the bars and substantially parallel to the first frame portion and the second frame portion. ### Claim 4 (depends on 1) The portable power source of claim 1, wherein the portable power source has a total weight between (21.7 kgs) 48 pounds and (25 kgs) 55 pounds, and wherein the portable power source is operable to output a peak power output of between 3000 W and 4000 W for at least 2 seconds and a sustained maximum output power of between about 1500 W and about 2000 W for at least about 6 minutes.