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US 2026/0088313 A1Published application
Bipolar plate and electrochemical cell
AssigneeSchaeffler Technologies AG & Co. KG
InventorSebastian Zwahr
Life of this patent
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Abstract
The invention relates to a bipolar plate and an electrochemical cell comprising a plurality of such bipolar plates. The bipolar plate comprises a first half-plate and a second half-plate which are fixedly connected to one another, wherein the bipolar plate has a plurality of fluid passage openings comprising fluid inlet openings and fluid outlet openings and a first distributor field for distributing a fluid, an active field, and a second distributor field for distributing the fluid are located on both sides of the bipolar plate.
Claims16
A bipolar plate comprising:
- a first half-sheet;
- and
- a second half-sheet, wherein the first half-sheet and the second half-sheet are connected, wherein the bipolar plate comprises a plurality of fluid passage openings comprising fluid inlet openings and fluid outlet openings, wherein a first distributor field for distributing a fluid, an active field and a second distributor field for distributing the fluid are arranged on both sides of the bipolar plate, and having at least one seal on each side of the bipolar plate,
- wherein, in at least one transition region between a fluid passage opening and an adjacent distributor field,
- the first half-sheet includes a first step and a second step in the direction of the second half-sheet, starting from a fluid inlet opening,
- the second half-sheet is provided in the region of the first step with a third step in the direction of the first half-sheet, starting from the fluid inlet opening, and in the region of the second step is provided with a fourth step which is directed away from the first half-sheet,
- the first half-sheet includes, in a region between the first step and the second step, elongated three-dimensional first embossed structures oriented parallel to one another and curved in the direction of the second half-sheet,
- the second half-sheet includes, in a region between the third step and the fourth step, elongated three-dimensional second embossed structures oriented parallel to one another and curved in the direction of the first half-sheet and arranged in alignment with the first embossed structures and are supported against the first embossed structures,
- the first half-sheet includes a first sealing region is formed in the region of the first embossed structures on the side of the first half-sheet facing away from the second half-sheet and arranged to run transverse to the first embossed structures and to fill them,
- the second half-sheet includes a second sealing region arranged in the region of the second embossed structures on the side of the second half-sheet facing away from the first half-sheet so as to run transverse to the second embossed structures and to fill them, wherein the first sealing region and the second sealing region are arranged congruently one above the other when viewed perpendicular to a plane spanned by the bipolar plate, and
- the second half-sheet has includes an opening slot is arranged between the fourth step and the adjacent distributor field, wherein three-dimensional third embossed structures curved in the direction of the first half-sheet are arranged in alignment with the second embossed structures in a fluid flow direction and are supported against the first half-sheet wherein the opening slot is arranged such that the third embossed structures arranged in the second half-sheet are intersected by the latter.
8 more elements
An electrochemical fuel cell comprising:
- a first bipolar plate;
- a second bipolar plate;
- and
- a membrane electrode unit arranged between the first bipolar plate and the second bipolar plate,
- wherein at least one of the first bipolar plate or the second bipolar plate comprises:
- a first half-sheet;
- and
- a second half-sheet, wherein the first half-sheet and the second half-sheet are connected,
- wherein the bipolar plate comprises a plurality of fluid passage openings comprising fluid inlet openings and fluid outlet openings, wherein a first distributor field for distributing a fluid, an active field and a second distributor field for distributing the fluid are arranged on both sides of the bipolar plate, and having at least one seal on each side of the bipolar plate, and
- wherein, in at least one transition region between a fluid passage opening and an adjacent distributor field,
- the first half-sheet includes a first step and a second step in the direction of the second half-sheet, starting from a fluid inlet opening,
- the second half-sheet is provided in the region of the first step with a third step in the direction of the first half-sheet, starting from the fluid inlet opening, and in the region of the second step is provided with a fourth step which is directed away from the first half-sheet,
- the first half-sheet includes, in a region between the first step and the second step, elongated three-dimensional first embossed structures oriented parallel to one another and curved in the direction of the second half-sheet,
- the second half-sheet includes, in a region between the third step and the fourth step, elongated three-dimensional second embossed structures oriented parallel to one another and curved in the direction of the first half-sheet, and arranged in alignment with the first embossed structures and are supported against the first embossed structures,
- the first half-sheet includes a first sealing region formed in the region of the first embossed structures on the side of the first half-sheet facing away from the second half-sheet and arranged to run transverse to the first embossed structures and to fill them,
- the second half-sheet includes a second sealing region arranged in the region of the second embossed structures on the side of the second half-sheet facing away from the first half-sheet so as to run transverse to the second embossed structures and to fill them, wherein the first sealing region and the second sealing region are arranged congruently one above the other when viewed perpendicular to a plane spanned by the bipolar plate, and
- the second half-sheet includes an opening slot arranged between the fourth step and the adjacent distributor field, wherein three-dimensional third embossed structures curved in the direction of the first half-sheet are arranged in alignment with the second embossed structures in a fluid flow direction and are supported against the first half-sheet, wherein the opening slot is arranged such that the third embossed structures arranged in the second half-sheet are intersected by the latter.
14 more elements
An electrochemical electrolysis cell for electrolysis of water comprising:
- a first bipolar plate;
- a second bipolar plate;
- and
- a membrane electrode unit arranged between the first bipolar plate and the second bipolar plate,
- wherein at least one of the first bipolar plate or the second bipolar plate comprises:
- a first half-sheet;
- and
- a second half-sheet, wherein the first half-sheet and the second half-sheet are connected,
- wherein the bipolar plate comprises a plurality of fluid passage openings comprising fluid inlet openings and fluid outlet openings, wherein a first distributor field for distributing a fluid, an active field and a second distributor field for distributing the fluid are arranged on both sides of the bipolar plate, and having at least one seal on each side of the bipolar plate, and
- wherein, in at least one transition region between a fluid passage opening and an adjacent distributor field,
- the first half-sheet includes a first step and a second step in the direction of the second half-sheet, starting from a fluid inlet opening,
- the second half-sheet is provided in the region of the first step with a third step in the direction of the first half-sheet, starting from the fluid inlet opening, and in the region of the second step is provided with a fourth step which is directed away from the first half-sheet,
- the first half-sheet includes, in a region between the first step and the second step, elongated three-dimensional first embossed structures oriented parallel to one another and curved in the direction of the second half-sheet,
- the second half-sheet includes, in a region between the third step and the fourth step, elongated three-dimensional second embossed structures oriented parallel to one another and curved in the direction of the first half-sheet, and arranged in alignment with the first embossed structures and are supported against the first embossed structures,
- the first half-sheet includes a first sealing region formed in the region of the first embossed structures on the side of the first half-sheet facing away from the second half-sheet and arranged to run transverse to the first embossed structures and to fill them,
- the second half-sheet includes a second sealing region arranged in the region of the second embossed structures on the side of the second half-sheet facing away from the first half-sheet so as to run transverse to the second embossed structures and to fill them, wherein the first sealing region and the second sealing region are arranged congruently one above the other when viewed perpendicular to a plane spanned by the bipolar plate, and
- the second half-sheet includes an opening slot arranged between the fourth step and the adjacent distributor field, wherein three-dimensional third embossed structures curved in the direction of the first half-sheet are arranged in alignment with the second embossed structures in a fluid flow direction and are supported against the first half-sheet, wherein the opening slot is arranged such that the third embossed structures arranged in the second half-sheet are intersected by the latter.
14 more elements
Dependencies are inferred from the claim text.