A New Approach to Car Batteries Is About to Transform EVs

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A New Approach to Car Batteries Is About to Transform EVs
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Say hello to the Leapmotor C01—one of the first EVs to use a new battery design that uses the battery as a car's skeleton that could make electric rides cheaper, roomier, and able to hit ranges of 620 miles: 📸: Leapmotor

dominated the headlines, CEO Elon Musk and senior vice president Drew Baglino outlined how production of Tesla cars was changing through the usage of large-scale die-cast parts to replace multiple smaller components. They also said that Tesla would start using cell-to-body technology by around 2023.

McTurk explains: “Integrating cells into the chassis allows the cells and the chassis to become multi-purpose. The cells become energy-storing and structurally supporting, while the chassis becomes structurally supporting and cell-protecting. This effectively cancels out the weight of the cell casing, turning it from dead weight into something valuable to the structure of the vehicle.”

While Tesla’s 4680 battery with its larger volume seems to play an integral role in the company’s ability to move to a cell-to-body design, CATL’sboasts a 13 percent increase in capacity over the 4680, with a volume utilization efficiency of 72 percent and an energy density of up to 255 watt-hours per kilogram. It is set to become a key part of CATL’s third-generation cell-to-pack solution and will likely form the basis of the company’s cell-to-chassis offering.

Many EVs were previously created from the platforms of internal-combustion cars—and some still are—but the adoption of cell-to-chassis designs will make those older platforms hopelessly outclassed. According to Frost at Sprint Power, “the commitment by most [manufacturers] to an EV-only future in conjunction with more integrated designs, such as cell-to-chassis, will lead to significant improvements in the overall design and performance of EVs.

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