Gasgoo Munich-Driven by carbon-reduction goals and the need to lower logistics costs, new energy heavy-duty trucks are expanding beyond closed operating environments such as ports and mining areas into interprovincial trunk logistics and intercity transport. Driving range, charging efficiency and payload capacity remain key challenges to large-scale adoption. Gotion High-Tech’s new-generation CTB integrated heavy-duty truck battery system adopts a vehicle-integrated design, moving beyond standalone battery packs toward a more integrated chassis solution.
Image source: Gotion High-Tech
CTB Integration Reduces Weight and Improves Packaging
Conventional heavy-duty truck battery systems typically use standalone packs with additional frames, brackets and connectors that take up space and add weight. Gotion’s CTB (Cell to Bracket) technology removes redundant structural and module layers, integrating the battery into the vehicle through a high-integration bracket structure.
Compared with a standalone pack design, the height of the power battery system has been reduced to 943 mm, down 40%, lowering the center of gravity and improving driving stability. Its more compact pack achieves a volumetric energy density of up to 250 Wh/L. The vehicle’s overall weight is reduced by approximately 400 kg, while gravimetric energy density exceeds 160 Wh/kg. The weight saved can be converted into additional payload capacity.
Battery Capacities for Different Operating Scenarios
Differences in new energy heavy-duty truck operating scenarios have created varying requirements for power battery configurations. A 400 kWh battery can support a full day of operations in short-haul transport, while interprovincial trunk logistics typically requires 600 kWh or more for sustained long-distance operation.
Gotion’s new CTB system offers battery capacities ranging from 400 kWh to 700 kWh, allowing fleet operators to select a configuration suited to their operating requirements.
Safety, Thermal Management and Durability
For safety and maintenance, the system uses a water-electricity separation design, with external cooling pipes intended to reduce the risk of coolant leaks affecting battery cells and simplify servicing.
For low-temperature operation, the system offers liquid cooling and heating, with an optional PTC ceramic heater to warm the battery in extremely cold conditions and maintain a suitable operating temperature. Gotion says the system has also completed 6,000 km of vehicle durability driving tests.
