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Engineered structural materials specialized in thermal protection, crack control, and impact shielding for electric vehicle battery packs.
The global transition to New Energy Vehicles (NEVs) has accelerated the demand for battery packs that are not only energy-dense but also exceptionally safe and lightweight. Traditionally, battery enclosures have been manufactured using metals like aluminum and steel. However, as manufacturers strive to optimize vehicle range and meet stringent safety standards, advanced composite materials have emerged as the frontrunner. Among these innovations, Glass Fiber Reinforced Concrete (GFRC) and continuous basalt fiber composites are revolutionizing how engineers design battery pack trays, covers, and structural reinforcements.
Combining the high tensile strength of mineral fibers with the compressive resilience of specialized concrete matrices creates an ultra-durable shield. This hybrid material offers unprecedented thermal insulation, impact resistance, and electromagnetic shielding. As battery packs become integrated directly into the vehicle's chassis (Cell-to-Chassis or CTC technology), the structural load-bearing capacity of the enclosure becomes paramount. Glass fiber concrete provides the necessary mechanical properties while significantly reducing the overall weight compared to traditional steel frames.
One of the most critical safety concerns in NEV engineering is thermal runaway. When a single battery cell fails, it can release temperatures exceeding 1000°C. Traditional aluminum enclosures melt at around 660°C, risking catastrophic fire spread. Glass fiber concrete and basalt-reinforced composites can withstand continuous exposure to extreme temperatures up to 1000°C without losing structural integrity, effectively containing the thermal event.
Glass and basalt fibers are inorganic materials derived from natural minerals and volcanic rock. When integrated into cementitious or polymeric matrices, they provide several distinct advantages over traditional automotive materials:
By incorporating chopped basalt and glass fibers into the concrete mix, micro-cracks are arrested before they can propagate. This ensures the battery pack remains hermetically sealed against dust and water ingress (IP67/IP69K ratings) over the vehicle's lifespan.
The commercial adoption of fiber-reinforced concrete composites in the automotive sector is growing rapidly. Major OEMs and battery manufacturers are actively investing in thermoplastic composites and mineral-reinforced panels to replace heavy metal components. The market is driven by the need to comply with international safety regulations, such as the UN ECE R100 standard, which mandates strict thermal and mechanical safety criteria for electric vehicle drivetrains.
Furthermore, sustainability has become a core metric for automotive manufacturers. Glass and basalt fibers have a significantly lower carbon footprint during production compared to carbon fiber or aluminum. By utilizing recycled mineral composites and low-carbon concrete formulations, manufacturers can achieve net-zero targets while delivering top-tier performance on the road.
The under-tray of an NEV battery pack is continuously subjected to mechanical impacts, road debris, and potential ground strikes. Utilizing a thin-walled, high-performance glass fiber concrete panel reinforced with a three-dimensional basalt mesh creates an armor-like barrier. This composite structure absorbs high-energy impacts, preventing localized deformation that could crush internal battery cells.
Inside the battery pack module, thin sheets of basalt fiber surfacing tissue mats are placed between cell groups. These mats act as localized firewalls. In the event of a localized thermal runaway, the high-temperature resistance of the basalt fibers prevents the heat from propagating to adjacent modules, giving passengers valuable time to evacuate safely.
NEV battery packs operate at high voltages, often between 400V and 800V. Protecting the routing cables and connectors from high heat and mechanical wear is essential. Braided basalt fiber sleeves and tapes provide excellent electrical insulation, high dielectric strength, and thermal protection, ensuring the electrical integrity of the vehicle remains intact under all operating conditions.
China Beihai
China Beihai is founded in 2015 and located in Jiujiang, Jiangxi Province. China Beihai is a high-tech enterprise focusing on the research, development, production and sales of high-performance basalt continuous fiber and its production equipment manufacturing, as well as a leading enterprise in the domestic basalt fiber industry. Our materials are engineered to meet the stringent demands of modern industrial applications, including aerospace, civil engineering, and the rapidly growing new energy vehicle sector.
At China Beihai group, we specialize in the production of a wide range of products including basalt fiber mat (Basalt fiber chopped strand mat, Basalt fiber cloth), basalt fiber roving, basalt fiber yarn, basalt fiber chopped strands, and basalt fiber products (Basalt Fiber rebar, basalt fiber sleeves and tape). Our products are designed to meet the diverse needs of various industries, providing high-quality solutions for our customers.
At China Beihai group, we are dedicated to the production of a wide array of basalt-based products, ranging from basalt fiber mat, fabric, and roving to chopped strand and specialized construction materials. Our focus is on delivering high-quality, sustainable solutions for industries such as construction, geotechnical engineering, and manufacturing. With a commitment to innovation and excellence, we strive to cater to the unique requirements of our clients by offering a comprehensive selection of basalt-derived products.
Choosing to work with China Beihai means working with a leading manufacturer of basalt products. Our commitment to quality, innovation and sustainability sets us apart, ensuring our customers receive best-in-class solutions for their diverse needs. Reliability and customer satisfaction, we offer a wide range of high-quality basalt materials and construction products, backed by our dedication to excellence and industry expertise. When you partner with China Beihai, you can trust that you are working with a reliable and forward-thinking partner. A trusted supplier for all your basalt product needs.
Explore our core continuous basalt fiber solutions designed for heavy-duty engineering and composite structural reinforcement.
Basalt fiber is ideal for your engineering projects. Its high strength, corrosion resistance and lightweight properties allow it to easily solve a variety of challenges. In buildings, bridges, roads and other infrastructure projects, basalt fibers demonstrate outstanding performance, extending structural life and reducing maintenance costs. Choose basalt fiber, choose reliability and durability.
Basalt fiber rebar is a high-strength alternative to traditional steel bars and is used in a wide range of applications for reinforcing concrete structures in various fields, and its excellent performance makes it ideal for a variety of construction applications such as bridges, highways, buildings and other infrastructure projects.
Industry-proven fiber composites optimized for high-temperature stability, alkali resistance, and structural reinforcement.
Basalt Fiber Surfacing Tissue Mat is a non woven thin sheet engineered to provide a smooth resin rich surface layer for fiber reinforced plastic...
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Our high performance Basalt Fiber Mesh provides a superior reinforcement solution for concrete and plaster applications where high alkali resista...
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Our Basalt Fiber Needled Mat is a high density insulation material manufactured by mechanically bonding continuous basalt fibers without any chem...
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Read MoreUnveiling the infinite potential of basalt continuous fibers across various high-end manufacturing and construction domains.
Our basalt products have diverse applications in the field of house construction and concrete structure reinforcement.
In the aerospace field, basalt fibers are ideal for manufacturing aircraft wings and engine components due to lightweight strength.
Ideal for spacecraft shell materials, thermal protection systems, and high-temperature-resistant components of rocket engines.
Basalt-added concrete offers increased strength and durability, micro-crack control, and improved chemical resistance.
Meeting the lightweight trend of automotive materials, widely used in body panels, structural brackets, and battery pack covers.
High strength, durability, and protective properties make it ideal for protecting bridge structures from vehicle collisions and corrosion.
Outstanding acid and alkali corrosion resistance gives basalt fibers a unique advantage in pipeline and storage tank coatings.
Lightweight and salt-spray resistant, basalt composites are ideal for deep-sea aquaculture platforms and ship hull components.
China Beihai is committed to rigorous quality control standards, holding multiple international quality system certifications.
Stay updated with the latest technological breakthroughs and development trends in the basalt fiber and composite materials industry.
As drones slice through the sky to monitor wildfires, and intelligent robots execute repetitive tasks with precision on the factory floor, the efficient operation of this smart equipment is often underpinned by a "hardcore support" that is easily overlooked: a novel material derived from volcanic rock—basalt fiber. Though unassuming in appearance, its unique properties have made it the key to unlocking the performance limits of drones and robots, quietly driving a materials revolution within the realm of intelligent equipment.
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Basalt fiber is an inorganic fibrous material produced by drawing strands from natural basalt ore after it has been melted at high temperatures. It has garnered widespread attention for its exceptional physicochemical properties—particularly its performance in high-temperature environments. Notably, high-temperature-resistant basalt fiber—a key sub-category of this material—demonstrates unique value in numerous applications that demand resilience against extreme temperatures.
Recently, with the successful realization of major applications—such as the Chang'e-6 lunar exploration mission and the world's first deep-sea basalt fiber aquaculture platform—basalt fiber is rapidly accelerating its transformation from a laboratory research outcome into a strategic new material with tangible industrial productivity. Possessing the combined advantages of being eco-friendly, low-carbon, lightweight, high-strength, weather-resistant, and corrosion-proof, basalt fiber is now—bolstered by a comprehensive system of quality monitoring and standards—achieving breakthroughs in aerospace-grade applications and widespread commercialization.
Explore our entire range of basalt and glass fiber materials engineered for structural reinforcement and thermal barriers in advanced mobility applications.
