Eveready Battery Company, Inc.

Moltech Power Systems, Inc.

Daniel L Killebrew

Thomas F Shea

Randy Brown

Marty Orler

Vincent J Puglisi

Richard A Hudson

Bobby L Tibbs

Martin C Orler

James R Brown

Harvey C Hilderbrand

David L DeVries

A battery pack includes a plurality of electrochemical cells and a control circuit. The battery pack provides power to a tool in the form of a pulse width modulated waveform. The plurality of electrochemical cells provide a total output voltage. The control circuit is coupled to the plurality of electrochemical cells and receives a trigger signal from the tool. In response to the trigger signal, the control circuit determines whether a pulse width of the pulse width modulated waveform requires adjustment. Additionally, the control circuit can be configured to receive an indication of the total output voltage. In this case, the control circuit determines whether the pulse width of the pulse width modulated waveform requires adjustment based on the level of the total output voltage.

Battery pack including input and output waveform modification capability

A connector assembly connects a plurality of battery cells in a serial/parallel arrangement. Each battery cell includes a cover and a canister having a side and a bottom. Each battery cell is constructed such that a segment of the side of the canister forms a top crimped portion that retains the cover and is electrically isolated from the cover. The connector assembly includes a conductive weld cup. The conductive weld cup includes a bordered portion and recessed portion. The bordered portion includes a first side wall and a ledge that is substantially planar. The recessed portion is recessed within the ledge. The recessed portion includes a recessed portion and a floor that is substantially planar. The first side wall includes an integrated tab projecting from it. An inner surface of the bordered portion engages an outer surface of the side and the bottom of the canister of an upper adjacent battery cell. An outer surface of the floor engages a cover of a lower adjacent battery cell. The integrated tab provides for coupling the battery cells of two adjacent battery sticks in parallel.

Connector assembly for connecting battery cells

Battery pack casing

Growing community of inventors

Lake City, FL, United States of America

Daniel L Killebrew