Gm Global Technolgoy Operations, Inc.

Steven Daniel Lorentz

Wayne Cai

Roger Michael Brisbane

Chih-chang Chen

Nikolay Kondratyev

Sami A Syed

Igor M Kan

Jason Mazza

Nicholas Compton

A cell stack includes adjacent first and second battery cells respectively having a positive cell tab, a negative cell tab, and an outer surface. The outer surfaces are flush. The positive cell tab of the first battery cell protrudes from the outer surface of the first battery cell, and the negative cell tab of the second battery cell protrudes from the outer surface of the second battery cell. An isolative shield is positioned adjacent to the outer surfaces, and defines through-slots receiving therein a respective one of the cell tabs. A method includes providing the cell stack, inserting the cell tabs into the pair of through-slots of the isolative shield, positioning a primary surface of the isolative shield adjacent to the outer surfaces of the adjacent battery cells after inserting the cell tabs, and affixing the primary surface of the isolative shield to the cell stack.

Isolative shield with positional control features for welded flexible cell tabs in an HV battery cell stack

A battery assembly includes a plurality of battery cells each including a cell tab and a bus bar connected to the cell tabs of adjacent battery cells. The bus bar including a pair of 180 degree bend regions that each define a channel for receiving a respective cell tab and a cut-out region defining an opening having opposing edge portions that allows direct access to the cell tab within the cut-out region. A weld line connects the cell tab to at least one of the opposing edge portions within the cut-out region.

Battery bus bar design and laser welding

Growing community of inventors

Royal Oak, MI, United States of America

Steven Daniel Lorentz