Traction battery concept makes electronic intermediate converter redundant

December 04, 2017 // By Christoph Hammerschmidt
Driving range, costs and performance of electric vehicles - all this must be improved if electric mobility is to establish itself on the market. In the hyPowerRange development project, companies and research institutes are working together to develop a battery concept that enables cost-effective, modular and flexible design of the power and capacity of electric vehicle batteries.

In order to improve the aforementioned factors, the development partners want to design and build a modularized hybrid energy storage system. Various high-energy and high-performance cells are combined to form a traction battery for vehicles of all categories. In contrast to previous projects, the hybrid battery is directly coupled to the vehicle, i. e. operated without an electronic intermediate converter - despite its high voltage of  about 400 volts, a BMZ spokesperson said. 

In addition to direct coupling, the project will also apply additional measures to extend the driving range. The energy storage system is integrated into a superordinate energy and thermal management system in the vehicle. In this context, the use of heat pumps in the vehicle and battery and vehicle temperature control with thermal pre-conditioning from the electrical network, optimized in terms of range, are planned.

Participating in the project are the Fraunhofer Institute IWES as consortium leader, vehicle tuning company ABT, development services provider Bertrandt, battery manufacturer BMZ Group, as well as the university of Kempten and the thermosystem specialist Konvekta AG.