Decision inputs
- Target compression window
- End plate stiffness and bolt pattern
- Seal compression characteristics
- Temperature and pressure duty
APPLICATION SOLUTION
Battery & hydrogen sealing and compression
Electrolyzer and fuel cell stacks use disc springs to establish uniform compression balancing sealing contact pressure and structural deflection; this entry page lists compression design decision points and evidence sources.
ENGINEERING PROBLEM
Uneven stack compression raises contact resistance, harms seals and scatters performance.
BOUNDARY
This page describes a decision pattern and does not promise size or performance for another operating condition.
Solution pattern
- Distribute elastic compression across bolts with disc spring stacks
- Compensate assembly tolerance and thermal growth
- Assess compression uniformity with stack models
Key risks
- Too little compression leaks; too much damages components
- Long-term creep relaxes compression
- Uneven temperature causes local over-compression
Verification plan
- Compression-force calibration
- Retention re-test after thermal cycling
- Stack impedance and leak checks
Source-backed correspondences
| Summary | Load | Travel | Source |
|---|---|---|---|
| 电池/氢能密封——按sealing目标预选产品族；场景摘要仅供决策参考，不构成对其他工况的产品承诺。 | 按密封/堆叠压紧目标 | 热膨胀补偿 | Source ↗ |
Evidence (library locators)
Every technical claim traces to a specific asset version and page; restricted sources show locator metadata only.
- 2022 Belleville Springs Endplates PEMFC Stack PDF p.7 · mechanism(internal source; excerpt not public)
- PEMFC 2021 Novel Compression Concept Disc Springs ITBA PDF p.2 · mechanism(internal source; excerpt not public)
- 386 Daimler 燃料电池堆压缩装置 碟簧 弹簧杆端板加压 US20090162726A1 PDF p.1 · mechanism(internal source; excerpt not public)
- 387 Ballard 燃料电池堆碟簧压缩机构 US6057053 同族 AU732640B2 PDF p.7 · mechanism(internal source; excerpt not public)
- 390 FuelCell Energy 高温燃料电池堆压缩系统 内贝氏碟簧叠 同心盘簧 EP1316124B1 PDF p.3 · mechanism(internal source; excerpt not public)
- 2022 Belleville Springs Endplates PEMFC Stack PDF p.2 · numeric(internal source; excerpt not public)
- 2022 Belleville Springs Endplates PEMFC Stack PDF p.5 · numeric(internal source; excerpt not public)
- 2022 Belleville Springs Endplates PEMFC Stack PDF p.10 · numeric(internal source; excerpt not public)
- 2022 Belleville Springs Endplates PEMFC Stack PDF p.14 · numeric(internal source; excerpt not public)
- PEMFC 2021 Novel Compression Concept Disc Springs ITBA PDF p.11 · numeric(internal source; excerpt not public)
- 388 Siemens 燃料电池紧固机构 碟簧 压板 螺钉 US6210823 PDF p.12 · numeric(internal source; excerpt not public)
- 389 Ballard Blanchet 电堆外部压缩包 贝氏碟簧叠 同心盘簧 EP1590846B1 PDF p.5 · numeric(internal source; excerpt not public)
- 392 MDPI Sustainability 2022 14 15928 PEMFC 端板贝氏碟簧排布 截面形状优化 PDF p.2 · numeric(internal source; excerpt not public)
- 393 MDPI Sustainability 2022 14 8593 电堆等效刚度模型 热 机械耦合 PDF p.2 · numeric(internal source; excerpt not public)
Cases illustrate decisions and do not constitute a specification promise for any other operating condition.
ENGINEERING REVIEW