US 9,166,422 B2Granted

Battery based portable power supply

AssigneeBlack & Decker Inc.

InventorsDaniele C. Brotto, Nathan J. Cruise, Erik Ekstrom, Pradeep M. Pant, David A. Carrier, Shailesh P. Waikar, Ren Wang, Mehdi T. Abolhassani, William D. Spencer, Rouse Roby Bailey, Jr., Andrew E. Seman, Jr., John E. Buck, Seth M. Robinson

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Abstract

A portable power supply includes a housing, and power circuitry providing an output AC waveform having a first positive voltage step level, a second higher positive voltage step level, a third lower positive voltage step level, a fourth negative voltage step level, a fifth higher negative voltage step level, and a sixth lower negative voltage step level.

Claims7

Dependent claims

A portable power supply comprising:

a housing;
a current source disposed in the housing;
a first battery cell connected to the current source;
a third battery cell connected in parallel to the first battery cell;
a first transistor connected in parallel to the first battery cell;
a second battery cell connected in series to the first battery cell;
a second transistor connected in parallel to the second battery cell;
a first local controller connected to the first and second transistors for controlling the first and second transistors;
and
an inverter connected to the first and second battery cells.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/037,290Filed 26 Feb 2008 · us provisional application
Priority: 26 Feb 2007
Published: US 2008/0266913 A130 Oct 2008
Granted: 20 Oct 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H02M 7/501
Using discharge tubes with control electrode or semiconductor devices with control electrode: sinusoidal output voltages being obtained by the…
H02J 7/50
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: acting upon multiple batteries simultaneously or…
H02J 7/70
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: characterised by the mechanical construction
H02M 7/003
Conversion of AC power input into DC power output; Conversion of DC power input into AC power output: constructional details, e.g. physical…