Fuel-cell stack terminal with multi-material thermal press-bonded sealing
Stack end terminals that combine electrical current takeoff with multi-fluid sealing by thermally press-bonding dissimilar-thickness materials, mass-produced for Toyota MIRAI fuel-cell stacks.
Problem solved
Fuel-cell stacks need end terminals that both collect current and seal hydrogen, oxidant and coolant paths; joining dissimilar metals/thicknesses without warpage-induced leak paths is a production bottleneck.
Application contexts
- Light-duty FCV PEFC stacks
- Potential transfer to commercial FC vehicle stacks needing sealed current takeoff
- Stack end-plate electrical/seal hybrid components
Technical principle
Gasket-derived die and thermal press-bonding process joins materials of different thickness and composition while compensating warpage to keep seal thickness uniform; terminals sit on both sides of the FC assembly and extract electricity while sealing H2/O2/coolant.
Typical use cases
- PEFC stack terminal for passenger FCV
- Sealed electrical takeoff parts for multi-fluid stack ends
Partnership route
How global engineering teams typically engage this asset.
Helpful to include: stack architecture and terminal current rating · seal fluids and pressure/temperature envelope · material stack-up constraints · annual volume · whether PEFC-only or broader FC platforms
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- Source: 燃料電池部品 | 日本ガスケット株式会社
- Original language: JA
- Summary AI-assisted; translation status: Unreviewed