Patent ID: 8632907
Filing Date: 2014-01-21
Classification: B23K,H01M,Y02E,Y02P,Y10T

Abstract:
1. An electrochemical cell comprising: a canister; a core insert disposed in the canister; an end cap insert, the end cap insert having an external surface facing away from the core insert; and a plurality of electrode tabs disposed between the end cap insert and the core insert, wherein the end cap insert, the plurality of electrode tabs, and the core insert are electrically coupled by a unitary weld provided by a welding source external to the canister, the unitary weld including a physical transformation of the end cap insert, the plurality of electrode tabs, and the core insert, the physical transformation extending from the external surface of the end cap insert to the core insert, and wherein the unitary weld is formed after the electrochemical cell is assembled by welding the end cap insert, the plurality of electrode tabs, and the core insert in the assembled cell through the external surface of the end cap insert.