Automotive Battery Cover STM Molding Project
A fiber-reinforced PU composite cover protects a high-voltage battery pack from environmental exposure and mechanical loads while integrating mounting and sealing features.
Automotive application case
Illustration notice. Process illustrations are not verified photographs of this installation.
Project reference basis. Figures and configuration details are reported in the supplied project brief. They are reference values for the stated application, rather than verified acceptance results or a guarantee for another installation. Confirm the source records, material, tooling, operating schedule and test method when assessing a comparable project.
Application
A fiber-reinforced PU composite cover protects a high-voltage battery pack from environmental exposure and mechanical loads while integrating mounting and sealing features.
Material and forming concept
Reactive PU is sprayed onto glass-fiber reinforcement, then transferred and compression molded. A Baypreg STM material option reports up to 60% lower weight than conventional steel covers, together with material-specific flame-retardant and electrical-insulation properties.
Haifeng production scope
The stated line package combines a high-pressure PU spray machine, six-axis robot, 500-ton press and battery-cover mold. Spray path, resin mass, layup and press cycle are set against the part drawing.
Design review
Check local reinforcement, cover stiffness, mounting flanges, sealing surfaces, impact protection and pack integration. Apply GB 38031-2025 and vehicle-maker requirements to the complete battery system as applicable.
Validation
Record finished-cover mass, dimensions, mechanical tests, electrical insulation, fire response, sealing and relevant battery-pack test results.
Explore the Spraying Transforming Molding (STM) Battery Cover Solution.
Concept illustration — not a photograph of delivered equipment or a customer installation.
Material and production route
The stated line package combines a high-pressure PU spray machine, six-axis robot, 500-ton press and battery-cover mold. Spray path, resin mass, layup and press cycle are set against the part drawing. Haifeng turnkey scope: high-pressure PU spray machine, six-axis robot, 500-ton press and battery-cover mold.
Material data and component validation
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