The present invention relates to electric drivetrain kits for converting all-terrain vehicles into hybrid or electric vehicles. In exemplary embodiments, a conversion kit replaces an existing standard single motor and transmission drive system with a dual set-up including a motor for each rear wheel and a split transmission that houses two sets of gear reduction components in a single housing or an all-wheel configuration with two transmission sets (front and rear). Dual output shafts in each transmission set drive the wheels independently to provide the torque needed as required and demanded by each wheel. System electronics send signals to the motors and other components to manage the system and independently control each wheel.

An electric vehicle (EV) battery unit and installation method is provided herein. The EV battery unit includes a modular housing with a central section with batteries positioned therein and a first lateral section with a battery cooler that is designed to reduce a temperature of the batteries and an inverter that is positioned therein and electrically coupled to the batteries. The modular housing further includes a first frame attachment interface profiled to attach to a first longitudinal frame rail in an EV and a second frame attachment interface profiled to attach to a second longitudinal frame rail in the EV, where the batteries are positioned laterally between the first and second frame attachment interfaces.

Methods and systems are provided for cooling a hydrogen fuel cell assembly. A vehicle system, in one example, includes a hydrogen fuel cell assembly electrically coupled to a traction motor, positioned behind a cab, and including a plurality of hydrogen storage tanks and hydrogen fuel cells. The vehicle system further includes a fuel cell cooling assembly including an inlet manifold in a deflector, where the deflector is fixedly coupled to and positioned vertically above the cab and designed to direct airflow to a fan array that is coupled to a fuel cell assembly heat exchanger, where the fan array is positioned behind inlet manifold and longitudinally offset therefrom.

Methods and systems are provided for an electric vehicle powertrain. The vehicle system includes an electric distribution assembly with a junction box that is electrically coupled to a traction motor-generator and is designed to electrically coupled to, via separate circuits, a traction battery assembly and a hydrogen fuel cell assembly that is positioned behind a vehicle cab. In the system, the traction battery assembly is positioned vertically below the hydrogen fuel cell assembly.

The disclosure provides a stack frame that is arranged in a front portion of a vehicle and on which a battery stack is mounted. The stack frame includes a body section and a crash box. The body section includes plural members that are welded to each other along a weld line. The weld line between the plural members extends in a front-back direction of the vehicle. The crash box is arranged on a front side of the body section. A lateral wall surface of the crash box is displaced from an extended line of the weld line.

A truck chassis frame includes a front frame facing a front of a vehicle, a rear frame facing a rear of the vehicle, and a mounting module connected between the front frame and the rear frame, and having a mounting space in which a component is mounted.

A vehicle rear structure includes: a fuel tank arranged between a pair of side members; and a floor panel. The floor panel includes: a front floor panel and a rear floor panel that cover an upper surface and a rear surface of the fuel tank. and that have a roof section located above height positions of flanges of the side members. The rear floor panel has: a bottom surface located below the height positions of the flanges of the side members; rear vertical wall sections raised upward from both of left and right sides of the bottom surface; and rear flat sections folded to the left and the right at upper ends of the rear left and right vertical wall sections and joined to upper surface sides of the flanges on a vehicle inner side of the pair of side members.

A power electric module mounting structure may include a front side member provided in a longitudinal direction of a vehicle body and including a side surface formed in an internal direction of the vehicle body and an upper surface connected to the side surface, a bulk head mounted inside the front side member, and a mounting bracket connected to the side surface and the upper surface of the front side member through the bulk head to mount a power electric module on the mounting bracket.

A fuel cell vehicle includes a fuel tank module that accommodates a fuel gas, and a rail arranged along a vehicle-width direction of the fuel cell vehicle in a floor part of the fuel cell vehicle, in which the fuel tank module includes a casing that accommodates a fuel tank accommodating the fuel gas, a block unit arranged in a bottom surface of the casing and configured to be attachable to and detachable from the rail and movable along the rail, and a fixation unit that can fix the block unit to the rail and release fixation of the block unit to the rail.

A fuel cell vehicle includes a vehicle body, a tank mounted on the vehicle body, a fuel cell unit configured to generate electricity by using gas supplied from the tank, and a first band configured to fix the tank to the vehicle body. The tank includes a valve-side end including a cap to which an automatic valve is attached, a base-side end opposite to the valve-side end, and a cylindrical tank side surface extending between the valve-side end and the base-side end. The first band extends in a circumferential direction along the tank side surface, and is located within a range of a first predetermined distance ±15 mm from the base-side end or within a range of a second predetermined distance ±15 mm from the valve-side end.