2022 Toyota bZ4X Revealed

Driving range is a critical consideration for EV customers and Toyota has brought to bear almost 25 years’ experience in high-capacity battery development to ensure that not only does the bZ4X offer peace of mind of in terms of the distance it can cover, but also reassurance that that capability can be maintained year after year. In line with development targets for the battery, only a marginal reduction in battery performance is expected – around just 10% – in 10 years of driving, or 240 000 kilometres, whichever comes first.

The high-density lithium-ion battery has a 71.4 kWh capacity that is expected to deliver a driving range of more than 450 km (applying to WLTP metrics). Figures depend on version and remain provisional at this stage, prior to homologation.

Introduction 0:00
Toyota BEV Platform 0:30
Features 1:42
Safety 2:29
Materials used 3:41

Thanks to an efficient and effective heating system, including a heat pump, reliability is also maintained in sub-zero temperatures, with only a modest reduction in range compared to competitor models. Similarly, the battery can be fast-charged without compromising safety or service life: an 80% charge can be achieved in around 30 minutes with a 150 kW fast-charging system (CCS2). From Q4 2022, a new 11 kW three-phase on-board charger will be available.

Key to the battery’s quality and durability is multiple monitoring of the voltage, current and temperature, from individual cell level. If any abnormal heat generation is detected, controls are automatically triggered. Countermeasures have been put place to mitigate any material degradation, and there are safeguards in the manufacturing process to prevent foreign matter from entering the battery. In a Toyota first, the battery is water-cooled.

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