# US 11,897,064 B2 · Battery powered welding system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,897,064 B2 - Document ID: US11897064B2 - Status: Granted - Kind: B2 - Application number: 16/990,509 - Filed: 2020-08-11 - Published: 2021-01-28 - Granted: 2024-02-13 - Earliest claimed: 2010-07-09 - Assignees: Illinois Tool Works Inc. - Applicants: Illinois Tool Works Inc. - Inventors: Scott Ryan Rozmarynowski; Caleb Robert Krisher; Darrell Lee Sickels - Web page: https://patentgrep.com/patent/US11897064B2 ## CPC - B23K 9/327: {Means for transporting supplies} - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM ## Abstract A battery powered welding system is provided. In one welding system a battery powered welder includes control circuitry configured to control a welding power output converted from power from an external battery power source. The battery powered welder also includes a wire drive assembly coupled to the control circuitry and configured to feed a welding wire using power from the external battery power source. The battery powered welder includes a case integrally supporting and enclosing the control circuitry and the wire drive assembly. The case is not configured to enclose the external battery power source. ## Claims ### Claim 1 A battery powered welder comprising: control circuitry configured to control a welding power output converted from power from an external battery power source; a wire drive assembly comprising a wire drive motor and one or more wire feed roller, the wire drive assembly communicably coupled to the control circuitry and configured to feed a welding wire using power from the external battery power source; and a wire feed speed control circuitry comprising a pulse width modulation wire drive motor control circuit configured to generate one or more signals to regulate a voltage in a wire drive motor based on a reference wire feed speed level selected by the operator. ### Claim 2 (depends on 1) The welder of claim 1, wherein the case comprises a storage area configured to store a MIG torch, at least one weld cable, and at least one battery cable. ### Claim 3 (depends on 1) The welder of claim 1, wherein the control circuitry comprises a pulse width modulated weld output controller configured to control the welding power output. ### Claim 4 (depends on 1) The welder of claim 1, wherein the control circuitry comprises a pulse width modulated wire drive controller configured to control the wire drive assembly. ### Claim 5 (depends on 1) The welder of claim 1, wherein the control circuitry comprises a fan controller configured to control the operation of a cooling fan. ### Claim 6 (depends on 1) The welder of claim 1, comprising a cooling fan configured to aid in dissipating heat generated by the control circuitry. ### Claim 7 (depends on 1) The welder of claim 1, comprising a gas valve configured to control the flow of gas to a welding torch. ### Claim 8 A battery powered welding system comprising: a MIG torch for performing a welding operation; control circuitry configured to control a welding power output converted from power from an external battery power source; a wire feed speed control circuitry comprising a pulse width modulation wire drive motor control circuit configured to generate one or more signals to regulate a voltage in a wire drive motor based on a reference wire feed speed level selected by the operator; and a wire drive assembly coupled to the wire drive motor control circuit and to the control circuitry and configured to feed a welding wire using power from the external battery power source. ### Claim 9 (depends on 8) The system of claim 8, comprising a work cable configured to be coupled to the case. ### Claim 10 (depends on 8) The system of claim 8, comprising a weld cable configured to couple the MIG torch to the case. ### Claim 11 (depends on 8) The system of claim 8, comprising a battery cable configured to couple the control circuitry to one or more batteries of the external battery power source. ### Claim 12 (depends on 8) The system of claim 8, wherein the case comprises a louver configured to dissipate heat produced by the control circuitry. ### Claim 13 (depends on 8) The system of claim 8, wherein the case comprises a user interface configured to control the operation of the welding system. ### Claim 14 (depends on 8) The system of claim 8, wherein the control circuitry comprises a pulse width modulated weld output controller configured to control the welding power output. ### Claim 15 An externally powered welder comprising: a welding power converter configured to receive power from an external power source; a weld output controller configured to control welding power output of the welding power converter; and a wire drive controller configured to control a wire drive assembly; and a polarity change-over device configured to reverse a polarity of the welding output power between a work clamp cable and the welding torch. ### Claim 16 (depends on 15) The welder of claim 15, comprising a fan controller configured to control the operation of a cooling fan. ### Claim 17 (depends on 15) The welder of claim 15, comprising a gas valve controller configured to control the operation of a gas valve. ### Claim 18 (depends on 15) The welder of claim 15, wherein the weld output controller is configured to receive a control signal from a weld output control device. ### Claim 19 (depends on 15) The welder of claim 15, wherein the wire drive controller is configured to receive a control signal from a wire feed speed control device. ### Claim 20 (depends on 15) The welder of claim 15, comprising a switch detection circuit configured to detect when a welding torch trigger is actuated.