You might say that xEV batteries are in a state of flux: every day, we strive to meet emerging challenges related to higher voltages, greater power density and longer battery life. For thermal runaway, electrical isolation, assembly and more, the solutions that 3M provides begin where they are the most vital and cost-effective: with each battery cell. From this elemental perspective, we are creating materials that address swelling, pressure, electrical failure and other growing challenges in xEV battery cells. We are constantly testing new solutions, gathering new data, and generating ideas for - literally - the future of EV batteries.
As the market shifts from ICE to xEV, the opportunities grow - and so do the challenges. What used to be the most cost-effective ways to manufacture automobiles don’t apply. Now you’re producing electric batteries, from the cells outward. A strong, knowledgeable partner in xEV battery materials can help. That partner is 3M.
Demand for energy density is increasing, and chemistries are changing. The next generation of xEV battery cells will be subject to greater heat - and more swelling. Keeping battery assemblies solid, not to mention maintaining consistent thermal and electrical performance, requires experts in materials science. Let’s get together.
This is flexibility: our electrically insulating resins can meet a wide range of specific requirements including dielectric strength, adhesion to specific substrates and resistance to high temperatures. For complete and consistent coverage, our fusion-bonded resins are electrostatically applied and rapid heat-cured to form tough, durable coatings in places where tapes may not reach on EV battery casings. Resins are thermally cured and applied prior to assembly of the cell.
Our range of SSITs far exceed the bond strength of standard PSAs. Our latest film tapes with UV-initiated adhesive are excellent for cell isolation as they do not require heat or pressure for cure. They can be incorporated into existing PSA assembly processes with relatively minor modifications. They can be used along with thermal set tapes for module walls and pack lining, and in place of them for cooling plate applications. We’ll work with you to build the right solution within your assembly process.
For your current designs, you can choose from a wide range of 3M™ Flexible Insulation solutions that protect against flame and extremely high temperatures during thermal runaway and fire propagation events, as well as provide dielectric strength to help prevent re-ignition afterwards. For what’s upcoming, we are happy to collaborate with you - developing and testing materials that protect against pressure, grit, adhesive failures and a host of other conditions likely to occur in tomorrow’s high-voltage and high-energy-density xEV batteries.
At 3M, the cell is just the start. We are always testing and producing new solutions for xEV batteries - thermal interface materials, battery sealants, structural adhesives, cushioning materials, adhesive tapes and others, from the cell to the module, the pack, the vehicle and finally the road. Check out what we have for xEV batteries, today and for the future.
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