WO2026139860 - APPARATUS AND METHOD OF MANUFACTURING A STEPPED POROUS TRANSPORT LAYER FOR AN ELECTROCHEMICAL CELL FROM A DIE AND BLOCK
National phase entry is expected:
Publication Number
WO/2026/139860
Publication Date
02.07.2026
International Application No.
PCT/IB2025/063342
International Filing Date
22.12.2025
Title **
[English]
APPARATUS AND METHOD OF MANUFACTURING A STEPPED POROUS TRANSPORT LAYER FOR AN ELECTROCHEMICAL CELL FROM A DIE AND BLOCK
[French]
APPAREIL ET PROCÉDÉ DE FABRICATION D'UNE COUCHE DE TRANSPORT POREUSE ÉTAGÉE POUR UNE CELLULE ÉLECTROCHIMIQUE À PARTIR D'UNE MATRICE ET D'UN BLOC
Applicants **
ROBERT BOSCH GMBH
Inventors
BRAATEN, Jonathan
CHENG, Lei
MEHRAZI, Shirin
MOJICA, Felipe
STUEHMEIER, Bjoern
Priority Data
19/003,440
27.12.2024
US
Application details
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2185 | |
| EPO | Filing, Examination, Granting | 11371 | |
| Japan | Filing, Examination, Granting | 2376 | |
| South Korea | Filing, Examination, Granting | 2545 | |
| USA | Filing, Examination, Granting | 5940 |
Total:
24,417
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Abstract[English]
A method of manufacturing a porous transport layer (PTL) for an electrochemical cell includes placing a porous sheet between a base die (702) having a top face profile and a compression block (704) having a bottom face profile, and drawing the base die and the compression block toward each other while maintaining a first porosity of a first region of the porous sheet and generating a second porosity of a second region of the porous sheet corresponding to the top face profile of the base die, the first porosity is greater than the second porosity.[French]
L'invention concerne un procédé de fabrication d'une couche de transport poreuse (PTL) pour une cellule électrochimique, qui consiste à placer une feuille poreuse entre une matrice de base (702) ayant un profil de face supérieure et un bloc de compression (704) ayant un profil de face inférieure, et à étirer la matrice de base et le bloc de compression l'un vers l'autre tout en maintenant une première porosité d'une première région de la feuille poreuse et à générer une seconde porosité d'une seconde région de la feuille poreuse correspondant au profil de face supérieure de la matrice de base, la première porosité étant supérieure à la seconde porosité.