Battery cell for electric vehicle battery pack

• Main Authors: Tang, Yifan, Monismith, Scott Quinlan Freeman, Liu, Ying, Chung, Kent Wing Kin, Elsberry, Jeremy Andrew
• Format: Patent
• Language: English
• Published: 23.02.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING; VEHICLES IN GENERAL

A battery cell for an electric vehicle battery pack can include a housing and a gasket. The housing can define a sidewall of the battery cell that extends between an open end of the housing and a closed end of the housing. The open end of the housing can include an uneven rim pattern having a plurality of peak regions and a plurality of valley regions to define a plurality of tabs. The plurality of peak regions can engage the gasket to seal the housing with the gasket. Each of the plurality of tabs can define a respective flat crimped area. Each flat crimped area can have a surface area between one square millimeter and five square millimeters. At least one of the flat crimped areas can provide a surface for bonding with a wire.