The first electric excavator with an integrated Combined Charging System (CCS) fast-charging interface as it is known from electric cars, is now being successfully operated on a zero-emission construction site in Norway. This enables full charging in under an hour. The ZE85 battery-powered electric excavator from Suncar HK AG uses the vehicle-side modular DC charging system Interflow, developed by Suncar. The system enables the DC fast charging of high-voltage batteries up to 280 kW. This system can be integrated into any other battery-powered vehicle or machine with a system voltage of up to 800 VDC and a maximum charging current of 350 A and can be combined with an on-board charger. For further information see the IDTechEx report on Electric Vehicles in Construction, Agriculture and Mining 2020-2030.
There is an enormous potential to reduce emissions on construction sites. In Oslo, for example, around 21% of CO2 emissions are emitted by construction machinery. Therefore, the authorities in Oslo have stated that all public buildings must be built with "fossil-free" construction machinery. The European Commission is also setting the trend, issuing guidelines in the areas of "Buying green" and "Green Public Procurement" and regulating emissions on construction sites. As a result, clean technologies such as battery-powered construction machinery are also finding their way into the construction industry.
In order to be able to tap into this rapidly growing market, more and more construction machinery manufacturers are electrifying their machines. At the R&D site of the Zurich-based start-up company Suncar, excavators and other construction machines are electrified on behalf of major manufacturers such as Hitachi, Liebherr and others. The battery-powered vehicles and machines are successfully in use throughout Europe.
The electric excavators can be operated both in battery and cable mode. They have an onboard charger and can be charged at a worksite distribution board via a standard CEE three-phase power socket.
Source and top image: Suncar HK AG