US 12,278,577 B2
Power tool battery pack
Alexander R. Barton, Baltimore, MD (US); Mark T. Cherry, White Marsh, MD (US); Timothy J. Hennesy, Baltimore, MD (US); William Thomas Lunsford, V, Towson, MD (US); Michael W. Roberts, Red Lion, PA (US); Nathan J. Osborne, Baltimore, MD (US); Elizabeth Wink, Baltimore, MD (US); Daniel F. Nace, Towson, MD (US); and Philip Gilde, Baltimore, MD (US)
Assigned to BLACK & DECKER INC., New Britain, CT (US)
Filed by BLACK & DECKER INC., New Britain, CT (US)
Filed on May 13, 2022, as Appl. No. 17/744,455.
Claims priority of provisional application 63/188,268, filed on May 13, 2021.
Prior Publication US 2022/0368258 A1, Nov. 17, 2022
Int. Cl. H02P 23/14 (2006.01); B25F 5/00 (2006.01); H01M 10/48 (2006.01); H01M 50/247 (2021.01)
CPC H02P 23/14 (2013.01) [H01M 10/482 (2013.01); H01M 50/247 (2021.01); B25F 5/00 (2013.01); H01M 2220/30 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A power tool system comprising:
a first power tool including a plurality of power tool terminals, a motor, a tool control module, the tool control module including circuitry to (1) monitor, sense and detect a capacitance value and a temperature value on a first one of the plurality of power tool terminals and (2) select a control scheme to control the motor based on the detected capacitance value; and
a multi-voltage battery pack including a plurality of battery pack terminals configured to mate with the plurality of power tool terminals, a thermistor coupled to a first one of the plurality battery pack terminals, the first one of the plurality of battery pack terminals configured to mate with the first one of the plurality of power tool terminals, additional circuitry coupled to the first one of the plurality of battery pack terminals configured to provide the capacitance value at the first one of the plurality of battery pack terminals indicative of characteristics of the multi-voltage battery pack.