The cooling system for the battery cells including the cooling duct is optimized, while components such as the system main relay are designed for reduction in size and weight.
Furthermore, the system maintains the battery charge at a constant level at all times by monitoring and computing the cumulative amount of discharge under acceleration, and recharging by regenerative braking or with surplus power under normal running conditions.
The hybrid battery (traction battery) has a limited service life. The lifespan of the hybrid battery (traction battery) can change in accordance with driving style and driving conditions