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The key factor is the choice of a suitable type of storage and the assembly of the cells into one or generally multiple reliable batteries as well as the evaluation (or design) of optimal drive systems which can provide the expected transportation performance (speed, loading capacity) taking into account the characteristics of the terrain (steep gradients, substrate, climate).

The components needed for this (motors, transmissions, brakes, batteries, inverters, overall controls, etc.) are state-of the-art industrial products or innovations based on scientific findings (laboratory simulations, computer models, series of measurements) of renowned universities and institutes.

THE ROLE OF THE UNIVERSITIES OF APPLIED SCIENCE IN THE eDUMPER PROJECT

THE BINARY EDUCATION SYSTEM IS THE BEST PREREQUISITE FOR LINKING THEORY WITH PRACTICE

On the basis of experience, research and development concentrates on the main drive and power supply strand. The academic partners specify the power and lifespan parameters for the specific order based on lifespan models tested on ESReC (Energy Storage Research Center) equipment. In terms of stationary operation, this involved primarily emergency power supplies and uninterruptible power supplies for computer centres and operating theatres in hospitals, which resorted to energy stored in batteries. Almost as a by-product of the rapid eMobile development which uses high-voltage batteries, but also thanks to experience with direct-current batteries in all voltage categories, energy can now be used on a time-shifted basis and can even be optimally fed into the grid on a deferred basis.

This is where the interests of the Federal Office of Energy come to the fore. In the implementation of the Swiss Federal Council's energy strategy, electrical mobility and grid storage play a key role, and are also eligible for financial grants.


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Federal Office of Energy
www.bfe.admin.ch

The Federal Office of Energy supports pilot and demonstration projects which promote the efficient and rational use of energy and renewables.


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Bern University of Applied Sciences
www.bfh.ch

The University’s Applied Research and Development Department is characterised by its market-orientation and close co-operation with businesses and public institutions, administrations and the cultural sector.

ESReC: Energy Storage Research Center


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NTB Buchs
www.ntb.ch

The Interstate University of Applied Sciences of Technology Buchs ranks among the most renowned universities in Switzerland and makes a valuable contribution to the development of innovation through its well-developed linking of teaching and practice.


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Empa (Material Science and Technology - the Place where Innovation Starts)
www.empa.ch

USE IN STEEP TERRAIN

eDUMPER NO.1 AS THE FIRST PLUS ENERGY VEHICLE

Between August and November 2017 the components evaluated in accordance with the calculated specifications were installed into the empty chassis of a used HD 605 7. The hydraulic pumps for the multi-disk brakes, tipper drive, servo support and pre-loading of the auxiliary braking system are driven by an additional 120 kW electric motor produced in the Bernese Oberland. Space was made available for the 4 battery blocks, 710 kWh in total, in the engine compartment, the cooling system and the space previously occupied by the diesel tank.

*BFH - ESReC: lifespan model; NTB: thermal management of the battery to increase working life and ensure reliable operation; EMPA: security and reliability of the converted vehicle and electrical systems.

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