A patented power rail-connection system is boosting the use of EVs in mining, writes Nick Flaherty.

BluVein in Australia has been working with Hitachi Energy on the dynamic charging system to deliver battery-electric haul trucks up to 400 Mt.

BluVein will focus on its leading-edge e-rail and connection, while Hitachi Energy will supply the electronics and digital controls to power the system.

The e-rail uses electrical contacts that are enclosed in the Ingress-Protection (IP) rated slotted rail. This rail is mounted above or beside the vehicle, and an arm and hammer connects them, providing power to drive the EV and charge the batteries while in operation.

BluVein will focus on its leading-edge e-rail and connection of the truck, while Hitachi Energy will supply the electronics and digital controls to power and monitor the whole system.

The system is independent of the truck or charging system manufacturer, but BluVein has a deal with Epiroc in Sweden to convert the Minetruck MT42 underground diesel truck to electric use with the slotted, e-rail system.

The firms are exploring off-vehicle hardware requirements for BluVein1 for underground and smaller fleets.