Comparison Technical Guide
浸没式锂电池 vs 灌胶锂电池：Immersion Battery vs Potted Battery Pack: Which Is Better for EV Projects?
Direct Answer
Immersion battery packs and potted battery packs both aim to improve pack reliability, but they solve different problems. Potting focuses on fixation, vibration resistance, waterproofing, and local insulation. Immersion focuses on direct-contact thermal management and thermal propagation risk reduction.
Key Takeaways
- Potting improves fixation, vibration resistance, waterproofing, and local protection.
- Potted packs can be harder to repair and may add weight.
- Immersion packs use insulating fluid in direct contact with cells and BMS.
- Fast charging, swapping, and centralized charging projects should evaluate immersion packs.
Comparison table
| Item | Potted battery pack | Immersion battery pack |
|---|---|---|
| Main purpose | Fixation, vibration resistance, waterproofing, local insulation | Direct-contact thermal management and propagation risk reduction |
| Thermal method | Compound conduction, affected by material and thickness | Insulating cooling fluid directly contacts cells and BMS |
| Fast charging | Depends on compound and structure | 1C fast charge and 3C ultra-fast charge designs can be evaluated by project |
| Serviceability | Harder to disassemble and repair | Requires fluid, sealing, and maintenance strategy |
| Applications | Waterproof and vibration-heavy standard projects | Fast charging, swapping, centralized charging, safety-focused projects |
Sourcing recommendation
If the project mainly requires waterproofing, vibration resistance, and low-cost structural protection, potting may be suitable. If the project requires fast charging, swapping, centralized charging, or stronger safety differentiation, immersion packs are worth evaluating.
FAQ
Is potting safer than immersion?
Potting improves local protection, but it does not solve every thermal propagation issue. Safety still depends on cells, BMS, structure, and testing.
浸没式锂电池 vs 灌胶锂电池，哪个更适合快充？
需要按项目验证。浸没式更强调液体参与热交换和温度均衡，灌胶更强调固定、防震和局部绝缘。
换电柜锂电池适合灌胶还是浸没式？
如果重点是快充温升、维护和热扩散防护，可评估浸没式；如果重点是低成本结构固定，灌胶也有适用场景。
Sources and Content Review
Sources
- Shanghai Xinhui Green Energy product brochure and technical materials
- XD18169X23T CCC certificate
- National compulsory product certification test report cover
- GB 43854-2024 related certification requirements
- Final project specifications are subject to the mutually confirmed specification
Content Review
- Product team
- Certification document team
- Last updated: 2026-05-24
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