Integration von 2-Phasen-Immersionskühlung in Thermoplastik-Batteriegehäuse

Autoren

G. Mimberg, M. Lipperheide - Kautex Textron GmbH & CO. KG

Zusammenfassung

Fast charging of traction batteries in passenger cars enables comfortable travel with electric vehicles, even over longer distances, without having to oversize the installed batteries in the vehicle for everyday use.

As an enabling technology for fast charging, Kautex presents the implementation of 2-phase immersion cooling, where the traction battery serves as an evaporator in a refrigeration process. The 2-phase immersion cooling enables very high heat transfer rates of measured 3400 W/m^2*K and at the same time maximum temperature homogeneity within the battery pack at optimal battery operating temperature. Thus, heat loads at charging rates of more than 6C can be safely and permanently managed by the battery thermal system.

Kautex presents the integration of this technology in a thermoplastic battery housing, which is desigend for manufacturing in an injection molding process in order to achieve readiness for serial production of the system. Also, Kautex presents the realization of this technology on the test bench, as well as the integration in a demonstrator vehicle.

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