Automakers and battery manufacturers are racing to develop new electric-vehicle batteries that can reinforce body structures and open the door to breakthroughs in driving range.
“If they have a brain, that’s the way to do it," said Michigan-based consultant Sandy Munro. "It saves a lot of money and time and weight.”. The research effort aimed at designing batteries that can reinforce a vehicle's body and chassis is going hand-in-hand with efforts to refine battery chemistry and reduce the cost of what goes inside the cells.
The cathodes in both companies’ battery cells use lithium iron phosphate , a chemistry whose basic materials are more plentiful, less expensive, less prone to fires, and less harmful to the environment than materials such as cobalt and nickel, which are more commonly used in EV battery cathodes. A new type of structural battery unveiled last September by Tesla CEO Elon Musk - expected initially to power the Model Y - bonds hundreds of large-format cylindrical cells together with structural adhesive, then sandwiches them between two metal sheets that are designed to attach to and help stiffen the body and chassis of the vehicle.
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