Electric vehicle battery pack covers have usually been made of steel or aluminum. Now there are polymer and polymer composite materials that can be used for battery boxes and contribute to both lightweighting and performance. These options are covered in Next Generation Battery Pack Housing – Materials, Processing, and Design, an article written by EWI […]
Read MoreElectric Vehicles Battery Tech USA 2022 March 14-15, 2022 Hyatt Regency Orange County, Garden Grove, California EWI is pleased to be a sponsor of EVBT USA 2022. We invite you to stop by Exhibit Booth #20 to speak with Doug Myers, Business Development Director, and find out how EWI can help improve your products. In […]
Read MoreA standard electric vehicle (EV) automotive battery can be decomposed into cell level, module level, and pack level. A cell mainly includes the anodes and cathodes, a module includes multiple cells, and a pack includes multiple modules. The three most common metal-to-metal joints in a lithium-ion battery pack are foil-to-tab, tab-to-tab, and tab-to-bus. All three […]
Read MoreThe Battery Show and EV Technology Expo September 14-16, 2021 Suburban Collection Showplace, Novi, Michigan EWI Senior Engineer Tim Frech will present “Pulsed Arc Welding of Battery Tabs and Cell Interconnections” at the Battery Show on September 14th, 3:00-3:45 pm EDT.
Read MoreWhile ultrasonic and laser welding are both effective methods for battery foil welding, neither can be monitored in process. So when a battery batch is defective, the problem is not identified until after material, time, and money as been spent. EWI recently tested a resistance spot welding technique that uses a capacitive discharge power supply […]
Read MoreThe integrity and reliability of joints in lithium-ion battery packs is critically important to manufacturers in industries ranging from automotive to consumer electronics to aerospace. If battery packs fail, it can result in more than just a faulty product — it can actually be a threat to public safety. Many welding techniques are used to […]
Read MoreEWI has developed a novel ultrasonic metal welding (UMW) knurl design which significantly improves the quality of foil-to-tab joints in lithium-ion battery cells. The new design allows multiple-layers to be joined in a single operation without pre-consolidation of the foils and without the use of buffer material or thicker sandwich foils. Download this paper for […]
Read MoreEWI is offering another free technical webinar on Tuesday, March 22 at 2pm EST. Mitch Matheny will present “Ultrasonic Metal Welding Foils to Tabs for Lithium Ion Battery Cells.” Click here now to sign up. Registration is open to the public. The one-hour webinar will review recent advances in tool design for ultrasonic metal welding of multi-layer foil […]
Read MoreFABTECH 2025 September 8-11, 2025 McCormick Place, Chicago, Illinois EWI will be exhibiting under the American Welding Program at FABTECH 2025. Please stop by Booth #B10011 to visit with EWI’s Ian Gibbs and Mitch Matheny. Additionally, ten EWI associates will be presenting at FABTECH as part of the AWS Professional Program:
Read MoreSAMPE 2025 May 19-22, 2025 Indiana Convention Center, Indianapolis, Indiana EWI Senior Technology Leader Jeff Ellis will present on Advances in Battery Enclosure Fabrication and Leak Testing as part of the Innovations in Materials and Processes for Automotive Sector Track. His talk will take place on Thursday, May 22, at 10:30 a.m. in Room 127.
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