The patent gives no clue as to the shape or style of the car. However, it details a floor-mounted battery with a cross-member and rocker panel design that creates a frame to house a sealed battery container. The advantage is that the design allows extended space front to back for the batteries, meaning more cells can be packed in. The language used to describe the design is deliberately dense, but our interpretation is that by using the rectangular frame type design around the batteries strengthened by curved and hollow prism-shaped rockers, Toyota and Subaru have created a highly rigid chassis that can house larger batteries. According to the patent, the design means the frame is less likely to deform in the case of a lateral collision, and the body can “suitably protect the battery.”
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