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US 7,183,517 B2Granted
Portable welding-type apparatus with interchangeable energy storage device
AssigneeIllinois Tool Works Inc.
InventorsBruce Albrecht, Jon Reynolds, Bernard J. Vogel
Life of this patent
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Abstract
The present invention is directed to a portable welding-type power source including a removable energy storage device configured to provide a first voltage output and a boost circuit connected to the energy storage device and configured to boost the first voltage output to a second voltage output to supply power to the welding-type power source according to a selected welding-type process.
Claims36
A portable welding-type power source comprising:
- a rechargeable energy storage device configured to provide a first voltage output;
- a boost circuit connected to the energy storage device and configured to boost the first voltage output to a second voltage output to supply power to the welding-type power source according to a selected welding-type process;
- and
- a chopper circuit configured to receive the second voltage output and convert the second voltage output to a power output matched to the selected welding-type process.
1 more element
A method of performing a welding-type process comprising:
- receiving an input voltage from a rechargeable energy storage device that is below a desired output voltage;
- increasing the input voltage at least to the desired output voltage of the welding-type process;
- regulating the increased voltage to supply the desired output voltage and current of the welding-type process at an output of a welding-type apparatus;
- and
- receiving a charging voltage from an external power supply and providing the charging voltage to the energy storage device to recharge the energy storage device.
2 more elements
A portable welding-type apparatus comprising:
- an interchangeable energy storage device configured to provide an output voltage less than a required voltage range for a welding-type process;
- a first converter connected to the energy storage device and configured to increase the output voltage of the energy storage device;
- a second converter to receive the increased output voltage from the first converter and regulate the increased output voltage to within the required voltage and current range for the welding-type process;
- and
- a charger configured to supply a charging voltage to the interchangeable energy storage device.
2 more elements
An apparatus comprising:
- an interchangeable rechargeable energy storage device configured to provide a first voltage output;
- a boost circuit connected to the energy storage device and configured to boost the first voltage output to a second voltage output;
- and
- a buck converter to receive the second voltage output from the boost circuit and regulate the second voltage output to be within a voltage and current range required by the apparatus.
1 more element
Dependencies are inferred from the claim text.