Batteries are complicating the future of electric SUVs: Toyota believes it has the ultimate solution
05/09/2026 09:00
Updated to
05/09/2026 09:00
Toyota is seeking a way to ensure that the large batteries in its future electric vehicles do not undermine one of the key advantages of an SUV: the chassis’s ability to adapt to highly uneven surfaces. The Japanese company has developed a new mounting structure specifically designed to isolate the battery from such movements.
This approach is detailed in several patents related to independent-frame vehicles, proposing changes to how the battery is supported by the structure. The goal is to keep the battery pack in a much more stable position even when the vehicle’s frame members experience different levels of torsion while driving off paved roads.
The problem isn’t with the chassis itself, but rather everything attached to it.
Off-road vehicles and pickups built around a frame are designed to accommodate some deformation. When one wheel rises over an obstacle while another remains lower, the structure can twist slightly, allowing the suspension to maintain contact with the ground. This is expected behavior in such vehicles.
A battery weighing hundreds of kilograms significantly changes the scenario. Unlike a fuel tank, the battery occupies a much larger area, is rigid, and must be protected from mechanical stress. Toyota acknowledges in its patents that an overly direct connection to the beams can cause some of the torque to be transferred to the battery pack itself.
The solution involves focusing battery support on areas of the chassis where torsional movement is much less. One of the patented configurations uses a subchassis located in the central area, designed to support the battery from below, thereby reducing movement that reaches it when the vehicle travels over difficult terrain. Toyota claims this design allows for both improved driving stability and better battery protection.
Another patent from the company addresses the same issue by dividing the assembly into several modules connected via crossmembers and elastic connections. In this way, each section can independently adjust to slight inclinations when the beams twist, rather than forcing the entire package to undergo the same deformation simultaneously.
More battery capacity without creating a rigid structural component
This type of solution could be particularly relevant in pickups, SUVs, and electric commercial vehicles, where there is a need to increase battery capacity without reducing ground clearance or completely altering platforms originally designed around an independent chassis.
Toyota is also exploring other systems designed to protect the battery from impacts. For example, a patent filed in January 2026 proposes reorganizing the battery and the shock-absorbing elements surrounding it so that these latter elements take the brunt of forces during a side collision. The goal remains the same: to prevent the forces generated in the vehicle’s structure from reaching the battery directly.
For now, these are developments covered by patents, and Toyota has not confirmed their use in a specific model. However, they do show a clear approach regarding battery-powered vehicles with a chassis: allowing the structure to retain the necessary characteristics for off-road use without a larger battery becoming the factor that limits its mobility.