A traction battery assembly 200 for a vehicle such as a BEV (battery electric vehicle) or HEV (hybrid electric vehicle) comprises a plurality of cells 210 with individual cells 211-216. A cooling plate 220 to control the temperature of cells 211-216 by heating/cooling is provided with an inlet 221 and outlet 222. A thermally conductive plate 230, comprises TIM layers (thermal interface material) 241, 242 positioned between the plurality of cells 210 and cooling plate 220 so that one side thereof is in contact with each cell 211-216 and the other side is in contact with cooling plate 220 along plane P1. The thermally conductive plate 230 has a thermal conductivity there along of more than 100 W/mK (and possibly exceeding 1000 W/mK) and may have an anisotropic thermal conductivity and be comprised of a layer of graphite or graphene and a metallic layer such as aluminium, and a thickness of less than 100 micrometres or less than 1mm. An assembly is also disclosed where a further conductive plate may be positioned between further assemblies of electrical cells (Fig 3). High value conductivity of plate 230 and plate position across cells 211-216 improve thermal spread and thereby battery performance and life.


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    Title :

    Traction battery assembly with thermally conductive plate


    Contributors:

    Publication date :

    2024-12-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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