Shenzhen Wandanan Precision Technology Co., Ltd Info@szwandaancnc.com
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Custom Sheet Metal Battery Enclosure
Sheet metal battery enclosure is the structural housing that contains and protects battery cells, battery management systems (BMS), thermal management components, and associated electrical connections. Its core mission is to ensure the safe, reliable operation of the battery system across its entire life cycle while preventing thermal runaway propagation, electrical hazards, and environmental degradation.
Common Materials
The selection of enclosure materials is driven by a combination of mechanical, thermal, and safety requirements. Steel, particularly galvanized or powder-coated cold-rolled steel, is widely used for large-scale stationary storage cabinets and industrial battery racks due to its exceptional structural rigidity, fire resistance, and cost-effectiveness. Aluminum alloy enclosures are favored in residential and commercial energy storage systems for their lightweight properties, natural corrosion resistance, and superior thermal conductivity, which aids passive heat dissipation from densely packed battery modules. For high-voltage systems and applications demanding the highest levels of safety, composite materials combining metal frames with insulating polymer panels are increasingly adopted.
| Category | Details |
| Material | Aluminum alloys: lightweight, corrosion-resistant, good thermal conductivity. High-strength steel: highcrashworthiness, lowercost, but heavier. Stainless steel: excellent corrosion and fire resistance, but weight and cost are higher. |
| Process | Stamping: main shaping process for sheet metal blanks. Laser cutting: for precise contouringand holes Bending & folding: using press brakes or robotic folding cells. Welding: for joining seams and reinforcement brackets Riveting: for multi-material joining where welding is difficult. |
| Application | Battery packs for electric vehicles : floor-mountedtrays, structural battery packs. Stationary energy storage systems (ESS). Light commercial vehicle battery enclosures. |
Ingress Protection and Environmental Resilience
Battery enclosures are rated by their IP (Ingress Protection) classification, which defines resistance to solid particles and liquid ingress. Residential indoor units may only require IP20 to IP40 ratings to prevent accidental finger contact and minor dust accumulation. Outdoor and industrial energy storage enclosures, however, typically demand IP65, IP66, or IP67 ratings. These high levels of sealing ensure that the enclosure can withstand heavy rain, snow, high humidity, and in coastal or marine environments, salt spray. Gaskets made of silicone or EPDM rubber are fitted along all seams, door openings, and cable entry points to maintain a continuous seal. Cable glands with compression seals are used at all wire penetration points to preserve the integrity of the enclosure'senvironmental barrier while allowing necessary electrical connections.
With over 20 years of sheet metal expertise, Wanda-an specializes in manufacturing high-quality battery enclosures. From EV trays to energy storage housings, we offer precision laser cutting, CNC bending, and durable powder coating. Trusted by global partners, we deliver custom designs with ISO-certified quality, battery metal enclosures, and on-time delivery. Partner with us for reliable, Scalable, and cost-effective battery housing solutions. Contact us today for a free quote.
