The HK super battery can be quick charged. Capacity of battery packs onboard the bus can be customized according to conditions of different bus routes. The charger can work under high voltage at 750V and high current at 500A. Ten minutes of quick top-off charging can ensure a range of 45 kilometers. The HK eBus is most suitable for urban public transportation usage. It outperforms the gas or fuel vehicles in terms of energy efficiency and cost effectiveness. During coasting and braking, the motor can automatically convert to generator mode, recovering the kinetic energy to charge the battery.
The eBus electric motor uses highly efficient permanent magnets and outer-rotor technology to minimize the amount of permanent magnetic material used. The motor generates high torque at low rpm and can be directly connected to the conventional drive shaft differential without the need of intermediate transmission. The drivetrain is thus simplified and the the whole system more reliable, economic and efficient.
Charging stations can be placed in bus terminals and transfer stations. Buses can be quick charged during terminal stops. Vehicles carry only 70kWh of batteries, enough for one-way or round-trip need. Compared with other electric buses that carry 300kWh of batteries, both the cost and weight are greatly reduced.