Welding process for a battery module

• Main Authors: DINKELMAN JOHN P, TYLER MATTHEW R
• Format: Patent
• Language: Chinese; English
• Published: 17.04.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The present disclosure relates to a battery module that includes a stack of battery cells, where each battery cell has a terminal, and the terminal has a first alloy of a metal. The battery module hasa bus bar that includes a body-having a second alloy of the metal, nickel plating on at least a portion of the body, and an indentation disposed on the body, where a thickness of the nickel plating is between 0.2% and 20% of an overall thickness of the body, and a weld physically and electrically coupling the respective terminal to the bus bar. The indentation has a depth between 10% arid 90% ofthe overall thickness, an area of the indentation is between 5% and 20% of an overall area of the body, and the nickel plating enables the weld to be stronger than a weld between the first and secondalloys. 本公开涉及种电池模块，其包括电池单元堆，其中每个电池单元具有端子，并且所述端子具有金属的第合金。所述电池模块具有汇流条，所述汇流条包括：具有金属的第二合金的本体、所述本体的至少部分上的镀镍以及设置在所述本体上的凹口，其中所述镀镍的厚度在所述本体的总厚度的0.2％至20％之间，并且焊缝使各个端子物理且电性地耦合到所述汇流条。凹口的深度在总厚度的10％和90％之间，凹口面积在本体的总面积的5％至20％之间，并且镀镍使得该焊缝能够比第和第二