Europe is a global leader in advanced manufacturing and sustainable technologies, and many companies have played an important role in driving the development of composite battery cases. Leading companies such as Valeo and SGL are leading the industry in innovation by providing lightweight, high-performance and high-safety solutions for the fast-growing electric vehicle market with advanced materials engineering and manufacturing processes. At present, the European composite battery housing market is in a booming stage, and the market participants include not only traditional European industrial giants, but also multinational companies from Japan, South Korea and other countries that have set up operations in Europe. The market is expected to reach $5 billion by 2030, showing great potential for growth and investment opportunities.
At the same time, XD Thermal specializes in aluminum liquid-cooled battery housings and is committed to providing reliable cooling solutions for automotive OEMs and related industries. Over the years, the company has accumulated rich experience in the field of thermal management of lithium-ion battery packs. Next, this article will introduce 10 companies that have an important influence in the field of composite battery boxes in Europe, and look forward to providing you with valuable information.
Valeo operates globally and has a strong presence in France, Germany, and the United States. The company’s composite battery enclosures are made from high-performance materials such as carbon fiber and fiberglass, chosen for their lightweight and high-strength properties, making them an ideal choice for EV battery applications.Notably, Valeo recently partnered with TactoTek to develop innovative automotive lighting solutions. For more details, visit their official website.
Although XD THERMAL is not headquartered in the Europe, its role in the global battery enclosure industry is increasingly recognised. Specialising in aluminum liquid-cooled battery enclosures, XD THERMAL has built strong partnerships with several Sweden, Finland and more-based OEMs and battery pack providers. Backed by extensive experience in thermal management and advanced manufacturing capabilities, the company delivers reliable, high-performance solutions for demanding new energy applications worldwide.
SGL Carbon uses fiber composite materials to manufacture battery enclosures, making them significantly lighter and extending the driving range of electric vehicles. At the same time, these enclosures outperform traditional materials in safety, cost efficiency, and thermal management.Notably, unlike steel, fiber composites do not require additional anti-corrosion coatings as they are naturally resistant to rust. Even if the vehicle’s underbody is damaged, the structural integrity of the enclosure prevents leakage, enhancing overall safety.Additionally, SGL Carbon has become a Climate Partner of the city of Bonn, actively supporting sustainability efforts. If you’re interested, feel free to learn more.
Mitsubishi Chemical Group, in close collaboration with engineering service provider EDAG Group, has developed unique solutions for EV battery enclosures based on advanced thermoset and thermoplastic composite materials.Although headquartered in Japan, Mitsubishi Chemical Group has multiple subsidiaries in Europe, with its European headquarters located in Belgium.Just recently, the company became a platinum sponsor of the AWA Global Release Liner Summit, which is being held in Chicago, Illinois, USA. If you’re interested, feel free to learn more.
Solvay announced that its Battery Enclosure Materials Automation (BEMA) project, in collaboration with Airborne, has received significant funding from Innovate UK. This project aims to develop fully composite battery enclosures for electric vehicles to improve battery efficiency. Jaguar Land Rover and Vertical Aerospace have expressed their support, and I believe this initiative will lead to more compact and lightweight high-energy battery enclosures for future EVs and aircraft.
Teijin’s know-how in the field of carbon fibers has been built up not only as a material supplier, but also as a key player in the automotive industry. With its in-depth knowledge of composite technology, Teijin is involved in everything from vehicle design to prototyping and series production, including, of course, the Composite Battery Enclosure.
In addition, Teijin has successfully transformed itself into a true Tier 1 supplier offering more complete solutions through the acquisition of Continental Structural Plastics (now Teijin Automotive Technologies). I recently learned that the company will soon be showcasing its new environmentally friendly Tenax Next™ R2S 513 6mm short carbon fiber at JEC World 2025, pushing the composites industry in a greener direction.
Covestro is a Germany-based global leader in polymer materials manufacturing, specializing in innovative material solutions for various industries. In the electric vehicle sector, the company has developed composite solutions for battery enclosures.One example is their collaboration with a partner to introduce a battery pack housing solution based on Baypreg® STM polyurethane. This solution utilizes a resin spray transfer molding process, reducing weight by at least 50% compared to traditional steel enclosures, while offering excellent corrosion resistance and insulation properties.Additionally, Covestro’s Brunsbüttel plant has officially received ISCC PLUS certification, ensuring greater transparency and lower carbon emissions. This marks another important step in Covestro’s commitment to advancing circular material solutions.
I learned that MCG, in collaboration with EDAG Engineering Group and Kreisel Electric, has developed a lightweight polymer composite battery enclosure for electric vehicles. The top cover of this enclosure is made of flame-retardant fiber-reinforced thermoplastic material, capable of withstanding high-intensity thermal runaway events. Additionally, the enclosure includes a layer of MAFTEC-brand polycrystalline insulation material made from alumina fiber to further protect the battery.
Kautex’s Pentatonic series uses fully composite materials, offering a lightweight solution for battery enclosures in both hybrid and electric vehicles. Its “one-shot” process integrates structural elements directly into injection or compression molding, eliminating the need for additional assembly. Notably, Kautex’s Pinghu facility launched a 5,500-ton compression molding line in 2022, enhancing its capacity for fiber-reinforced plastics and composite battery enclosures. In my view, the company has demonstrated solid capabilities in this field.
Bold Valuable Technology specializes in high-performance battery systems and utilizes composite materials to manufacture lightweight battery enclosures.Additionally, their BOLDair battery system is specifically designed for electric aviation applications, featuring a composite enclosure that significantly reduces weight while maintaining structural integrity.Recently, let’s congratulate the company as their Bold HP battery pack won the Powertrain Technology of the Year award at PMW Expo.
AZL Aachen GmbH specializes in the research and development of composite battery enclosures and offers a range of professional services. Through collaborative projects, the company studies emerging battery storage technologies and assesses their impact on battery enclosure materials and design. Additionally, AZL conducts in-depth analysis of battery enclosures in thermal runaway events and develops technologies to predict thermal propagation, optimizing battery safety design. In my view, these studies and tests will help advance the application of composite materials in EV battery enclosures while enhancing lightweighting and safety standards.
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