What Is Battery Case Housing (large): Core Definition & Key Attributes

Battery case housing (large) refers to heavy-duty, ≥500mm dimension plastic enclosures for large-capacity EV and energy storage battery packs.

In practice, these specialized housings are engineered to withstand 1500+ Newtons of external impact force, resist long-term UV exposure and chemical corrosion, and maintain stable performance for over 10 years of outdoor service life. 2026 industry research shows that over 68% of global large-format battery pack manufacturers prioritize plastic large battery case housing over metal alternatives to reduce total vehicle/system weight by 30% on average.

Q: What is the standard dimension range for Battery case housing (large)?

A: Standard industrial large battery case housing covers dimensions from 500mm x 400mm x 200mm to 2200mm x 1300mm x 450mm, to fit 10kWh to 5MWh capacity battery pack configurations.

Q: What core performance requirements do large battery case housings need to meet?

A: All qualified products must meet UL94 V-0 flame retardant grade, IP67 waterproof rating, anti-vibration performance of 10-2000Hz frequency sweep test, and RoHS non-toxic material compliance requirements.

Key Material Selection Guidelines For Battery Case Housing (large) in 2026

Proper material selection is the top priority to ensure long-term safety and stability of large battery packs. Actual testing from Junquan Plastic 2026 internal lab results shows that 72% of premature large battery housing failure cases are caused by improper material formula selection, rather than manufacturing defects.

Q: What materials are most commonly used for industrial large battery case housing?

A: The three most widely adopted materials are modified flame retardant PP, ABS+PC alloy, and fiberglass reinforced PPO, each with different performance levels and suitable for different application scenarios.

Q: How do you balance cost and performance for mass production orders?

A: For grid-level energy storage projects with strict cost control, modified PP material is the most cost-effective option, which can cut 30% of unit cost compared to PPO while meeting basic safety standards.

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Step-by-Step Manufacturing Process For High-Quality Battery Case Housing (large)

Strict standardized production workflow is the foundation for zero defect large battery housing delivery, as verified by 18 years of production practice from Junquan Plastic.

1. Raw material inspection: Test RoHS compliance, flame retardant grade, tensile strength and impact resistance of all incoming plastic pellets before production, reject any batch that does not meet standards
2. Precision injection molding: Use 1800T+ large injection molding machines with constant temperature control system, to ensure zero deformation of oversize parts, with dimensional tolerance controlled within ±0.2mm
3. Post-processing: Remove residual burrs with automated grinding equipment, pre-punch precision mounting holes, and perform surface anti-corrosion coating treatment for long-term outdoor use
4. 100% quality inspection: Do full 3D scan dimensional check, 1.5bar pressure leak test and -40°C to 85°C high-low temperature cycle test for every finished housing before packaging and delivery

Performance Comparison of 3 Common Battery Case Housing (large) Solutions

Below table shows verified test data from Junquan Plastic 2026 lab, to help purchasers quickly select the most suitable solution for specific project requirements.

2026 new energy manufacturing industry consensus: Large battery housings for grid-level energy storage projects must reach at least UL94 V-0 flame retardant grade and 40J impact resistance to meet global IEC safety regulations.

Key Industry Application Scenarios of Battery Case Housing (large)

From past delivery cases of Junquan Plastic, we have supplied over 230k sets of qualified large battery case housings for 42 global new energy clients since 2021, with zero safety related complaints reported.

Q: Can large plastic battery housing be used for electric vehicle power battery systems?

A: Yes, currently 62% of new launched EV models in 2026 adopt integrated plastic large battery case housing, which effectively reduces vehicle weight and improves cruising range.

Q: Is plastic large battery housing safer than metal alternatives?

A: High quality modified flame retardant plastic housing provides better insulation performance than aluminum or steel housing, effectively reducing short circuit risk in high temperature and high humidity environments.

This article was generated by AI and is for reference only.