On May 1 during a tour of the its new H2HQ facility in Gardenia, California, Toyota executives provided clues of where the company is heading with its hydrogen fuel-cell programs, with Class 8 semis, as well as hydrogen fuel-cell pickups, having a working fuel-cell Tundra prototype in Japan and a Hilux hydrogen fuel-cell prototype pickup in the U.K.
Toyota is fitting 200 kwh of lithium-ion NCA (nickel cobalt aluminum) battery cells in a special hydrogen fuel-cell Kenworth T680 set to be showcased at the Advanced Clean Transportation (ACT) Expo later in May.
Use of these larger batteries than in previous versions will allow this Class 8 semi to carry up to 82,000 pounds of payload with a target 300 mile range on any terrain, or up to 450 miles on calmer terrain.
The solution of a larger battery may serve as a template for making hydrogen fuel-cell commercial vehicles viable in the North American region.
While a big battery pack is not needed the vast majority of the time, a larger capacity gives flexibility as fuel-cell stacks take some time to ramp up and are best at producing a steady power output.
Having a much larger battery pack on board helps boost the efficiency of the semi’s fuel-cell stack, Toyota said, and the battery pack potentially allows a great amount of energy recovery on steeper downgrades.
In its latest version, this specially fitted Kenworth T680 can comfortably go at speed with a full load, over hills from Long Beach to Barstow, California and back—nearly 270 miles—without needing to be refueled.
The latest prototype produces 415 hp through a 310-kw dual-motor system, with an official range of up to 450 miles from its 58.8 kg of hydrogen.
The Kenworth is powered by a modularized kit built on the current Gen 2 stack used in the Toyota Mirai.
The module will be assembled at Toyota’s Georgetown in Kentucky and offered to a range of companies, although the fuel cells themselves will come from Japan.
(multiple sources on May 9, 2024)