Patent ID: 9722258
Date: 2017-08-01
CPC Classifications: B23K,H01M,Y02P,Y10T

Claim:
1. A method for welding a terminal pin/current collector tab assembly, comprising the steps of: a) providing a current collector comprising a main body portion and an extending current collector tab, wherein at least the current collector tab is of aluminum; b) providing a terminal pin of molybdenum, wherein the molybdenum terminal pin extends to spaced apart proximal and distal terminal pin portions; c) contacting the proximal portion of the molybdenum terminal pin to the aluminum current collector tab, thereby forming a terminal pin/tab assembly; d) positioning the terminal pin/tab assembly between first and second welding electrodes; e) applying an electrical current of at least about 800 amperes for about one to ten milliseconds between the first and second welding electrodes while simultaneously applying a force of at least 10 Newtons to the terminal pin/tab assembly, thereby forming a weld connecting the molybdenum terminal pin to the aluminum current collector tab,