NEWS

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i-HeCoBatt Thermal strategy to reduce impact on vehicle range

Enhancing thermal strategy imply to first measure and analyse the full thermal behaviour for the vehicle battery pack and then to build up a complete numerical model. This has been realized for iHeCoBatt project using the CEA’s facilities in Nantes (France) and CEA’s expert team in Grenoble (France). The first part has consisted in acquiring internal and external temperatures for different test profiles and external conditions. CEA’s facilities rely on a climatic chamber coupled to an electric power bench (Fig.1 and Fig.2). Several electrical profiles were imposed to the battery in order to fully define the thermal response of it, starting from the internal component, up to the entire system. Constant charging modes for a fixed range of SOC (State Of Charge), Constant cycling modes up to thermal equilibrium, fast charging modes and even emulating a fully dynamic electric solicitation were realized for several external conditions.

These data have then been used to highlight the influence of all component in the battery pack using full CFD (Computational Fluid Dynamics, Fig.3). Numerical models enable analysing heat diffusion within a cell module, fluid flow within the heat exchanger, the natural convection impact through the small residual air gaps in the battery pack. Finally it enables to give inputs for a more coarse modelling approach based on Matlab/ Simulink (Fig. 4), integrating the aside ancillary elements (chiller, pump). The latter will be used to quantify the impact of the different thermal management strategies on the vehicle range.

 

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Third General Assembly Meeting for the i-HeCoBatt Project

On February 25th and 26th, 2020, MIBA hosted the third General Assembly meeting for the i-HeCoBatt project in Laakirchen (AUSTRIA).

During this meeting, the partners exchanged on the advancement of the project on the following topics:

WP2: First climatic chamber test campaing

WP3: Prototyping of first version of the innovative heat-exchanger

WP4: Design and integration of sensors in innovative heat-exchanger

WP5: Modelling of battery pack

WP6: Development of SW and cloud based services

WP7: Pilot line and environmental assesment

WP8: Scheduling of first on-board tests

After two days of meetings and discussions we are glad to announce that the project is right on track and progress has already been achieved thanks to the collaboration of all the consortium partners: Cidetec; Miba; CEA Tech; Datik; Vertech Group; EPI; AUDI.

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Miba FLEXcooler® – the innovative thermal management solution for batteries

Cooling solutions for batteries that currently exist on the market are usually rigid aluminum plates with embedded pipes for the cooling liquid.

The Miba FLEXcooler® is a new and innovative cooling component for batteries. It’s main material is a foil where cooling liquid (various options) flows through the FLEXcooler® allowing maximum flexibility.

Compared to existing solutions on the market the FLEXcooler® is a non-rigid component, also flexible in size and shape. This allows battery cooling on cell, module and pack level.

The core benefit by using the FLEXcooler® technology is that there is no more need for gapfillers (thermal pasts) as the FLEXcooler® adjusts perfectly to the cell structure. Besides that, it is a non-electric conductive component showing better thermal efficiencies and tolerance compensation.

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Overview of the i-HeCoBatt project

The i-HeCoBatt project is a highly specialised collaborative project in which a consortium of seven industrial & research organizations will jointly develop innovative solutions for EV batteries. i-HeCoBatt stands for Intelligent Heating and Cooling solution for enhanced range EV Battery packs. Its aim is to achieve a smart, cost bursting industrial battery heat exchanger to minimize the impact on full electric vehicle range in extreme conditions.

News

i-HeCoBatt, disseminated at the University of Cambridge

On June 14, Erasmo Cadena, Sustainability Manager at Vertech Group and PhD in Environmental Science and Postdoctoral Researcher, attended the seminar ‘Sustainability, Critical Points and Challenges‘, hosted by the Cambridge University (United Kingdom).

At this event, Erasmo presented, among other contents, the project i-HeCoBatt, its main objectives and scope and he distributed as well some brochures.

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