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Sign upThermal Storage Tank (TST)
A heat storage device based on existing vehicle washer tank for electric vehicles
01.
Identification
The main challenge of Electric Vehicles is the short range due to limited battery capacity. This is further aggravated under low temperature, where the battery loses capacity and supplemental heating draws significant electrical energy, reducing range by up to 40%. On the other hand, excess heat produced during operation or charging is usually rejected to the environment. The Thermal Storage Tank (TST) uses the thermal mass of the existing washer tank, carried on every vehicle, as a heat storage device. The heat generated during vehicle operation is stored on-board and released during cold re-start of the vehicle, supplementing auxiliary electric heating. It may also serve as a heat sink during thermal peaks, for example in fast charging mode. Washer tank sizes are increasing due to the additional cleaning needs for driver assistance devices. In summary, while the electrical powertrain recuperates kinetic energy, the TST recuperates thermal energy.
Sector
Application
Target client profile
Tags
Label Date
February 2021
By
CEBI
From
Luxembourg
Maturity stage
Prototype testing 1:1 in the lab
Looking For
New clients, Visibility, Partners
Sectors - Value chain - Application
Sectors
Applications
Design, Power & Produce
Package & Distribute
Use & Efficiency
Valorize & Restore
Value Chain Steps
02.
The environmental benefits
- •A 10 ltr tank can store up to 1 kWh of thermal energy, equivalent of 5.5 km of electrical range in city mode, which can be used for warming of the passenger cabin or for windscreen de-icing. The benefits increase with lower temperature, in contrary to bat
- •A water mass allows to absorb heat peaks and preserve battery and other components' life. During ultra fast charge, a full 10 liter tank may adsorb 5 kW of heat during 12 minutes, assisting the active cooling process and allowing faster charging.
- •Increases efficiency for electrified vehicle operation in cold conditions, in the order of 72 kWh/year (approx. 21.6 kgCO2e/year) per vehicle in cold northern regions.
- •Provides longer component life, in particular for the battery, due to enhanced thermal management and lower drain at cold. Potential reduction of battery material (1-2kg) and downsizing of heating devices.
03.
The Financial benefits
- •Extends vehicle range and reduces operational cost due to better electric efficiency in colder regions, approx. 36 Eur/year per vehicle.
- •Allows to reduce vehicle cost and weight through downsizing of battery, heaters or other thermal management devices. Saving up to 70 Eur if battery is downsized.
04.
Activity Region
- Map
- /
- List
Europe
Sweden, Poland, Norway, Netherlands, Hungary, United Kingdom, France, Finland, Germany, Czechia, Switzerland, Belgium, Austria,
Asia
North america
- Headquarters
- Activity
05.
Company Profile
Headquarters
7327 Steinsel, Luxembourg
06.
Complementary solutions
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances.