FLEXcooler® - Flexible battery cooling without gap fillers

With the Miba FLEXcooler®, Miba offers a liquid cooling system for EV batteries that is suitable for the thermal management of all cell types, sizes and shapes.

The advantages of a flexible battery cooling

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  • 100% reduction of the gap filler
  • Compensation of manufacturing tolerances of the battery
  • Applicable for round prismatic and pouch cells

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Lightweight and slim design

  • Reduction of intercellular spaces to a minimum
  • Low weight - up to -80% of the raw material
  • Improved recycling process and effort
  • Low CO2 footprint

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  • Safe and smart components
  • Uniform cooling over the entire battery
  • Electrically non-conductive

Learn more about the advantages of flexible battery cooling

Florian Wiedrich

We'll be happy to explain the Miba FLEXcooler® to you.

Suitable for all cell types, forms and sizes

Our flexible battery cooling is compatible with every cell type on the market, whether pouch, prismatic or cylindrical cells of all formats.

The same applies to the cooling direction. The Miba FLEXcooler® can be integrated to cool the bottom, pole, tab or side of any type of battery cell. Once the FLEXcooler® has been integrated in the selected cooling direction, it inflates due to the coolant flow in its flow field until a positive connection is made between all surfaces to be cooled, without the need for TIM or other filling agents.

Let's talk about flexible battery cooling.

Thomas Gattringer

We would be happy to answer open questions in a non-binding consultation appointment.

Contact us now!

Our customers benefit from flexible battery cooling in many industries

New approach to battery cooling

Thermal management is a critical success factor for electric vehicles. Long service life, short charging time and energy density are directly related to an efficient battery cooling system.


Traditional battery cooling takes the form of a plate, usually made of aluminum, with embedded channels for the coolant. The battery cells, which are usually surrounded by a metal sleeve, and the cooling plate are rigid. Direct contact - e.g. due to manufacturing tolerances - always results in an air gap and thus poor thermal conductivity. By adding thermal conductive pastes, good thermal coupling can be achieved at this point.


Miba's flexible battery cooling system now replaces the cooling plate with a heat exchanger that adapts to the shape of the battery cell. The flexibility of the heat exchanger enables direct thermal contact between the heat exchanger and the battery cell, even without the use of a heat-conducting paste.

Interested in new battery cooling solutions?

Florian Wiedrich

Then contact us now.

Why Miba is the right partner for flexible battery cooling.

Joint work in battery initiatives - Battery cooling as an essential part

Our Experts

Our flexible battery cooling adapts perfectly to the battery cell housing, even if the hydrostatic pressure of the cooling circuit is only 0.05 bar. This results in efficient thermal coupling. Since a gap filler is no longer needed, weight is saved and a fixed connection between the heat exchanger and the battery modules is also avoided. This makes it realistic for the first time to easily separate battery and heat exchanger for recycling and repair purposes.

- Franz Pöhn -

Team Lead Development Battery Components

Contact us!

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