Webasto has been granted a patent for a battery module designed for electric vehicles. The module includes a unique electrical resistance element made of a polymer composition with a positive temperature coefficient, placed between battery cells to provide heating when necessary. GlobalData’s report on Webasto gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Webasto, Hydrogen fuel cells was a key innovation area identified from patents. Webasto's grant share as of April 2024 was 48%. Grant share is based on the ratio of number of grants to total number of patents.
Battery module with resistance element for heating electric vehicle cells
A recently granted patent (Publication Number: US11967685B2) discloses a battery module designed for electric vehicles. The module includes a plurality of battery cells and an electrical resistance element positioned between the cells to provide heating. The rod-shaped resistance element is made of a polymer composition with a positive temperature coefficient and features four concave sections with surface normal vectors pointing in different directions. This element comes into contact with the outer surface of at least two cylindrical battery cells, with a length greater than the cells' dimensions.
Furthermore, the patent details the composition of the electrical resistance element, which includes various polymers, electrically conductive particles like carbon black or copper powder, and thermally conductive particles such as silicon carbide or aluminum oxide. The resistance element can be connected to a power source to convert electrical energy into heat, ensuring optimal performance of the battery cells. Additionally, the design allows for the element to act as a holder for the battery cells, with open receiving compartments embedded in the holder to securely accommodate the cells. The element also features cooling ducts to facilitate the flow of a temperature control medium to cool the battery cells, enhancing overall efficiency and safety of the battery module for electric vehicles.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
