DE102022211320A1 - Method for packaging and providing a plurality of plate-shaped components for a fuel cell stack and stacks of plate-shaped components - Google Patents

Abstract

A method for packaging a plurality of plate-shaped components for a fuel cell stack comprises the steps of: a) providing a plurality of plate-shaped components designed as bipolar plates with an anode side and a cathode side, wherein one side selected from the anode side and the cathode side has at least one raised surface section, and the other side selected from the anode side and the cathode side has at least one, in particular flat, surface section, b) stacking the plurality of bipolar plates in such a way that the anode side and the cathode side of adjacent bipolar plates face each other and are in direct contact with each other in order to form a bipolar plate stack, and c) bracing the bipolar plate stack, in particular using one or more bands, along a stacking direction of the bipolar plate stack in such a way that the bracing and a respective contact of the at least one raised surface section of one side of a bipolar plate with the at least one surface section of the other side of another bipolar plate of respective adjacent bipolar plates creates a respective connection, in particular a frictional connection, between the respective adjacent bipolar plates so that the multiple bipolar plates are held, in particular, securely in place.

Description

The present invention relates to a method for packaging a plurality of plate-shaped components for a fuel cell stack, a method for providing a plurality of plate-shaped components for producing a fuel cell stack, a stack of plate-shaped components for a fuel cell stack and a transport stack with a stack of plate-shaped components.

Fuel cell systems with a fuel cell stack which has a plurality of plate-shaped components stacked one above the other, in particular bipolar plates, an anode intermediate plate, a cathode intermediate plate, an anode end plate and a cathode end plate, wherein the bipolar plates, a bipolar plate located at one end of a bipolar plate stack and an anode intermediate plate, and a bipolar plate located at another end of the bipolar plate stack and a cathode intermediate plate are each separated by membranes arranged therebetween, are generally known in the prior art.

The bipolar plates have an anode side and a cathode side facing away from the anode side, the anode intermediate plate has an anode side, and the cathode intermediate plate has a cathode side, wherein during operation of the fuel cell system a fuel, in particular a fuel or anode gas such as hydrogen, is supplied into the space or within a flow field between the membrane and the anode side of the bipolar plate or the anode intermediate plate, and an oxidizing agent, in particular a cathode gas such as oxygen, is supplied into the space or within a flow field between the membrane and the cathode side of the bipolar plate or the cathode intermediate plate.

When producing the fuel cell stack, the plate-shaped components, in particular the bipolar plates, are usually manufactured by a corresponding manufacturer, in particular a bipolar plate manufacturer, and sent by this to a fuel cell stack assembler, which is also referred to as a stacker, by placing them loosely on top of each other in cardboard boxes, whereby they are separated from each other by interleaves and protected against transport damage by other packaging material. These boxes are then packed in boxes and these boxes are then stacked on pallets and shipped or put on the transport route to the fuel cell stack assembler.

This approach may cause vibration and/or impact on the boxes or cartons during transport of the sheet components to dislodge any particles present on the interleaves, packaging material and boxes and adhere to the sheet components. Furthermore, dirt may otherwise be introduced into the sheet components during transport.

It is an object of the present invention to improve the packaging and provision of plate-shaped components for the production of a fuel cell stack.

This problem is solved by the features of the independent patent claims. Advantageous embodiments and further developments emerge from the dependent claims.

1. a) Bereitstellen mehrerer als Bipolarplatten ausgebildeter plattenförmiger Komponenten mit einer Anodenseite und einer Kathodenseite, wobei eine Seite ausgewählt aus der Anodenseite und der Kathodenseite zumindest einen erhabenen Flächenabschnitt aufweist, und die andere Seite ausgewählt aus der Anodenseite und der Kathodenseite zumindest einen, in einer Ausführung ebenen bzw. glatten, Oberflächenabschnitt aufweist,
2. b) Stapeln der mehreren Bipolarplatten derart, dass jeweils die Anodenseite und die Kathodenseite benachbarter Bipolarplatten einander zugewandt und in direktem Kontakt miteinander sind, um einen Bipolarplattenstapel zu bilden, und
3. c) Verspannen des Bipolarplattenstapels, in einer Ausführung unter Verwendung eines oder mehrerer Bänder, entlang einer Stapelrichtung des Bipolarplattenstapels derart, dass durch die Verspannung und einen jeweiligen Kontakt des zumindest einen erhabenen Flächenabschnitts der einen Seite einer Bipolarplatte mit dem zumindest einen Oberflächenabschnitt der anderen Seite einer anderen Bipolarplatte jeweiliger benachbarter Bipolarplatten eine jeweilige Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen den jeweiligen benachbarten Bipolarplatten hergestellt wird, sodass die mehreren Bipolarplatten, in einer Ausführung verrutschsicher, gehalten werden.

According to a first aspect of the present invention, a method for packaging a plurality of plate-shaped components for a fuel cell stack according to one embodiment comprises the following steps:

1. a) providing a plurality of plate-shaped components designed as bipolar plates with an anode side and a cathode side, wherein one side selected from the anode side and the cathode side has at least one raised surface section, and the other side selected from the anode side and the cathode side has at least one, in one embodiment flat or smooth, surface section,
2. b) stacking the plurality of bipolar plates such that the anode side and the cathode side of adjacent bipolar plates face each other and are in direct contact with each other to form a bipolar plate stack, and
3. c) bracing the bipolar plate stack, in one embodiment using one or more bands, along a stacking direction of the bipolar plate stack such that by bracing and a respective contact of the at least one raised surface section of one side of a bipolar plate with the at least one surface section of the other side of another bipolar plate of respective adjacent bipolar plates, a respective connection, in one embodiment a frictional connection, is produced between the respective adjacent bipolar plates, so that the plurality of bipolar plates are held in a slip-proof manner, in one embodiment.

In one embodiment, this ensures that the plate-shaped components, in particular the bipolar plates, which can be made of or comprise a plastic and/or a graphite compound, for example, do not slip against each other due to the tension during transport, and thus no particles can be generated by the mutual slipping. Furthermore, since the plate-shaped components are in direct contact with each other, the intermediate sheets can be dispensed with, which means that the (time) effort required for packaging, the required amount of packaging material and the costs for packaging can be reduced.

A raised surface section is to be understood here in particular as a (pressure-stable) projection which is arranged on the anode side or the cathode side of the plate-shaped component, in particular the bipolar plate, extends in the axial direction or stacking direction and (co-)determines an axial end of the bipolar plate and preferably radially surrounds, in particular encloses, a spatial region.

In this case, bracing of the bipolar plate stack is to be understood in particular as meaning that the bipolar plates are pressed against or against each other by an externally applied pressure or tension force, which can be in the range of 4 to 8 kN, for example by means of one or more straps, in particular tension straps, in such a way that when the bipolar plate stack is shaken or jolted as usually occurs during transport, the individual bipolar plates cannot slip against each other or be moved against each other.

The bands preferably encompass or surround the bipolar plate stack and extend in particular from one end of the bipolar plate stack to the other end of the bipolar plate stack along the stacking direction, over an axial end face of the bipolar plate stack, from the other end of the bipolar plate stack along or opposite to the stacking direction to one end of the bipolar plate stack and over the other axial end face of the bipolar plate stack.

According to one embodiment, in step c) the bipolar plate stack is clamped in such a way that the clamping and the respective contact of the at least one raised surface section of one side of the one bipolar plate with the at least one surface section of the other side of the other bipolar plate of the respective adjacent bipolar plates brings about a respective fluid-tight seal, in one embodiment in a direction perpendicular to the stacking direction, between the respective adjacent bipolar plates.

As a result, in an embodiment in which the at least one raised surface section and the corresponding at least one surface section surround a flow field of the anode side and the cathode side of adjacent bipolar plates, the space having the two flow fields can be sealed in a direction perpendicular to the stacking direction or radially.

According to one embodiment, in step a) a plurality of bipolar plates are provided with respective separate inlet openings and outlet openings for an anode gas and/or a cathode gas and/or a coolant, which in one embodiment run along the stacking direction, wherein
in step b) the plurality of bipolar plates are stacked in such a way that the separate inlet openings and outlet openings for the anode gas and/or the cathode gas and/or the coolant of the plurality of bipolar plates are each aligned with one another in such a way that a respective first passage channel for the anode gas and/or the cathode gas and/or the coolant is formed, which runs in the stacking direction and has the respective inlet openings, and that a respective second passage channel for the anode gas and/or the cathode gas and/or the coolant is formed, which runs in the stacking direction and has the respective outlet openings, and
one side selected from the anode side and the cathode side has respective raised surface portions surrounding the respective separate inlet openings and outlet openings, and the other side selected from the anode side and the cathode side has respective surface portions corresponding to the respective raised surface portions.

In one embodiment, the respective first through-channels and the respective second through-channels can be sealed perpendicular to the stacking direction or radially.

Furthermore, the respective inlet and outlet openings can be openings in the bipolar plate that extend in the stacking direction.

In this case, a first passage channel for the anode gas, which contains the respective inlet openings of the respective bipolar plates for the anode gas, a first passage channel for the cathode gas, which contains the respective inlet openings of the respective bipolar plates for the cathode gas, a first passage channel for the coolant, which contains the respective inlet openings of the respective bipolar plates for the coolant a second passage channel for the anode gas, which contains the respective outlet openings of the respective bipolar plates for the anode gas, a second passage channel for the cathode gas, which contains the respective outlet openings of the respective bipolar plates for the cathode gas, and a second passage channel for the coolant, which contains the respective outlet openings of the respective bipolar plates for the coolant.

In this case, flow channels are also provided in the bipolar plate, which, in an embodiment perpendicular to the stack direction, extend from the respective inlet and outlet openings for the anode gas, such as hydrogen, and the cathode gas, such as oxygen, into the region in which the corresponding flow fields are arranged, in order to enable the anode gas and the cathode gas to flow to the corresponding flow fields during operation of the fuel cell stack, and unused anode gas and cathode gas, as well as the reaction products generated during the chemical reaction between the anode gas and the cathode gas, such as water, to flow away from the corresponding flow fields.

Furthermore, flow channels are provided in the bipolar plate, which extend between the inlet and outlet openings, preferably linearly, in some embodiments at least in sections linearly, zigzag-shaped, sinusoidal and/or meandering, for the coolant in order to be able to achieve homogeneous cooling of the bipolar plate.

• a1) Bereitstellen einer als Anodenzwischenplatte ausgebildeten plattenförmigen Komponente und einer als Kathodenzwischenplatte ausgebildeten plattenförmigen Komponente, wobei die Anodenzwischenplatte eine Anodenseite mit zumindest einem erhabenen Flächenabschnitt, und die Kathodenzwischenplatte eine Kathodenseite mit zumindest einem, in einer Ausführung ebenen bzw. glatten, Oberflächenabschnitt aufweist, wenn die andere Seite der mehreren Bipolarplatten die Kathodenseite ist, und die Kathodenzwischenplatte eine Kathodenseite mit zumindest einem erhabenen Flächenabschnitt, und die Anodenzwischenplatte eine Anodenseite mit zumindest einem, in einer Ausführung ebenen bzw. glatten, Oberflächenabschnitt aufweist, wenn die andere Seite der mehreren Bipolarplatten die Anodenseite ist, wobei

in Schritt b) die mehreren Bipolarplatten derart zwischen der Anoden- und der Kathodenzwischenplatte gestapelt werden, dass,
wenn die andere Seite der mehreren Bipolarplatten die Anodenseite ist, die Anodenseite einer an einem Ende des Bipolarplattenstapels angeordneten Bipolarplatte der Kathodenseite der Kathodenzwischenplatte mit der Kathodenseite mit dem zumindest einen erhabenen Flächenabschnitt zugewandt ist, und die Kathodenseite einer an einem anderen Ende des Bipolarplattenstapels angeordneten Bipolarplatte der Anodenseite der Anodenzwischenplatte mit der Anodenseite mit dem zumindest einen Oberflächenabschnitt zugewandt ist, und
wenn die andere Seite der mehreren Bipolarplatten die Kathodenseite ist, die Kathodenseite einer an einem Ende des Bipolarplattenstapels angeordneten Bipolarplatte der Anodenseite der Anodenzwischenplatte mit der Anodenseite mit dem zumindest einem erhabenen Flächenabschnitt zugewandt ist, und die Anodenseite einer an dem anderen Ende des Bipolarplattenstapels angeordneten Bipolarplatte der Kathodenseite der Kathodenzwischenplatte mit der Kathodenseite mit dem zumindest einen Oberflächenabschnitt zugewandt ist,
um einen Stapel plattenförmiger Komponenten zu bilden, welcher den Bipolarplattenstapel sowie die Anodenzwischenplatte und die Kathodenzwischenplatte aufweist, und
in Schritt c) der Stapel plattenförmiger Komponenten entlang der Stapelrichtung des Stapels plattenförmiger Komponenten derart verspannt wird, dass
durch die Verspannung und einen direkten Kontakt des zumindest einen erhabenen Flächenabschnitts der Anodenseite der Anodenzwischenplatte mit dem zumindest einen Oberflächenabschnitt der Kathodenseite der der Anodenzwischenplatte benachbarten Bipolarplatte eine Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen der Anodenzwischenplatte und der der Anodenzwischenplatte benachbarten Bipolarplatte hergestellt wird, und durch die Verspannung und einen direkten Kontakt des zumindest einen Oberflächenabschnitt der Kathodenseite der Kathodenzwischenplatte mit dem zumindest einen erhabenen Flächenabschnitt der Anodenseite der der Kathodenzwischenplatte benachbarten Bipolarplatte eine Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen der Kathodenzwischenplatte und der der Kathodenzwischenplatte benachbarten Bipolarplatte hergestellt wird, oder
durch die Verspannung und einen direkten Kontakt des zumindest einen Oberflächenabschnitts der Anodenzwischenplatte mit dem zumindest einen erhabenen Flächenabschnitt der Kathodenseite der der Anodenzwischenplatte benachbarten Bipolarplatte eine Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen der Anodenzwischenplatte und der der Anodenzwischenplatte benachbarten Bipolarplatte hergestellt wird, und durch die Verspannung und einen direkten Kontakt des zumindest einen erhabenen Flächenabschnitts der Kathodenseite der Kathodenzwischenplatte mit dem zumindest einen Oberflächenabschnitt der der Kathodenzwischenplatte benachbarten Bipolarplatte eine Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen der Kathodenzwischenplatte und der der Kathodenzwischenplatte benachbarten Bipolarplatte hergestellt wird,
sodass die mehreren Bipolarplatten, die Anodenzwischenplatte und die Kathodenzwischenplatte, in einer Ausführung verrutschsicher, gehalten werden, wobei
durch diese Verbindungen optional zusätzlich eine fluiddichte Abdichtung, in einer Ausführung in der zur Stapelrichtung senkrechten Richtung, zwischen der Anodenzwischenplatte und der der Anodenzwischenplatte benachbarten Bipolarplatte und/oder eine fluiddichte Abdichtung, in einer Ausführung in der zur Stapelrichtung senkrechten Richtung, zwischen der Kathodenzwischenplatte und der der Kathodenzwischenplatte benachbarten Bipolarplatte bewirkt wird.According to one embodiment, the method further comprises the step:

• a1) Providing a plate-shaped component designed as an anode intermediate plate and a plate-shaped component designed as a cathode intermediate plate, wherein the anode intermediate plate has an anode side with at least one raised surface section, and the cathode intermediate plate has a cathode side with at least one, in one embodiment flat or smooth, surface section, when the other side of the plurality of bipolar plates is the cathode side, and the cathode intermediate plate has a cathode side with at least one raised surface section, and the anode intermediate plate has an anode side with at least one, in one embodiment flat or smooth, surface section, when the other side of the plurality of bipolar plates is the anode side, wherein

in step b) the plurality of bipolar plates are stacked between the anode and cathode intermediate plates such that,
if the other side of the plurality of bipolar plates is the anode side, the anode side of a bipolar plate arranged at one end of the bipolar plate stack faces the cathode side of the cathode intermediate plate with the cathode side with the at least one raised surface portion, and the cathode side of a bipolar plate arranged at another end of the bipolar plate stack faces the anode side of the anode intermediate plate with the anode side with the at least one surface portion, and
if the other side of the plurality of bipolar plates is the cathode side, the cathode side of a bipolar plate arranged at one end of the bipolar plate stack faces the anode side of the anode intermediate plate with the anode side with the at least one raised surface portion, and the anode side of a bipolar plate arranged at the other end of the bipolar plate stack faces the cathode side of the cathode intermediate plate with the cathode side with the at least one surface portion,
to form a stack of plate-shaped components comprising the bipolar plate stack and the anode intermediate plate and the cathode intermediate plate, and
in step c) the stack of plate-shaped components is clamped along the stacking direction of the stack of plate-shaped components such that
by the bracing and direct contact of the at least one raised surface section of the anode side of the anode intermediate plate with the at least one surface section of the cathode side of the bipolar plate adjacent to the anode intermediate plate, a connection, in one embodiment a frictional connection, is established between the anode intermediate plate and the bipolar plate adjacent to the anode intermediate plate, and by the bracing and direct contact of the at least one surface section of the cathode side of the cathode intermediate plate with the at least one raised surface section of the anode side of the bipolar plate adjacent to the cathode intermediate plate, a connection, in one embodiment a frictional connection, is established between the cathode intermediate plate and the bipolar plate adjacent to the cathode intermediate plate, or
by the bracing and direct contact of the at least one surface section of the anode intermediate plate with the at least one raised surface section of the cathode side of the bipolar plate adjacent to the anode intermediate plate, a connection, in one embodiment a frictional connection, is established between the anode intermediate plate and the bipolar plate adjacent to the anode intermediate plate, and by the bracing and direct contact of the at least one raised surface section the cathode side of the cathode intermediate plate is connected to the at least one surface section of the bipolar plate adjacent to the cathode intermediate plate, a connection, in one embodiment a frictional connection, is established between the cathode intermediate plate and the bipolar plate adjacent to the cathode intermediate plate,
so that the multiple bipolar plates, the anode intermediate plate and the cathode intermediate plate are held in a slip-proof manner in one design, whereby
These connections optionally additionally provide a fluid-tight seal, in an embodiment in the direction perpendicular to the stacking direction, between the anode intermediate plate and the bipolar plate adjacent to the anode intermediate plate and/or a fluid-tight seal, in an embodiment in the direction perpendicular to the stacking direction, between the cathode intermediate plate and the bipolar plate adjacent to the cathode intermediate plate.

In this way, in addition to the bipolar plates, the anode intermediate plate and the cathode intermediate plate can also be packaged in a slip-proof manner.

A raised surface section of the anode side of the anode intermediate plate or the cathode side of the cathode intermediate plate is to be understood in particular as a (pressure-stable) projection which is arranged on the anode side of the anode intermediate plate or the cathode side of the cathode intermediate plate, extends in the axial direction or stacking direction and (co-)determines an axial end of the anode intermediate plate or cathode intermediate plate and preferably radially surrounds, in particular encloses, a spatial region.

In this case, bracing the stack of plate-shaped components is understood to mean in particular that the bipolar plates, the anode intermediate plate and the cathode intermediate plate are pressed against one another by an externally applied pressure or tension force, which can be in the range of 4 to 8 kN, for example by means of one or more bands, in particular tension bands, in such a way that when the stack of plate-shaped components is shaken or jolted as usually occurs during transport, the individual plate-shaped components cannot slip against one another or be moved against one another.

The bands preferably encompass or surround the stack of plate-shaped components and extend in particular from one end of the stack of plate-shaped components to the other end of the stack of plate-shaped components along the stacking direction, over an axial end face of the stack of plate-shaped components, from the other end of the stack of plate-shaped components along or opposite to the stacking direction to one end of the stack of plate-shaped components and over the other axial end face of the stack of plate-shaped components.

According to one embodiment, in step a1) an anode intermediate plate with a respective separate inlet opening and outlet opening for an anode gas and/or a cathode gas and/or a coolant, which in one embodiment run along the stacking direction, and a cathode intermediate plate with a respective separate inlet opening and outlet opening for an anode gas and/or a cathode gas and/or a coolant, which in one embodiment run along the stacking direction, are provided, wherein
the at least one raised surface portion of the anode side of the anode intermediate plate has respective raised surface portions which surround the respective separate inlet openings and outlet openings of the anode intermediate plate, and the cathode side of the adjacent bipolar plate has respective surface portions corresponding to the respective raised surface portions of the anode intermediate plate when the other side of the plurality of bipolar plates is the cathode side, or
the at least one raised surface portion of the cathode side of the cathode intermediate plate has respective raised surface portions surrounding the respective separate inlet openings and outlet openings of the cathode intermediate plate, and the anode side of the adjacent bipolar plate has respective surface portions corresponding to the respective raised surface portions of the cathode intermediate plate when the other side of the plurality of bipolar plates is the anode side, wherein
the respective separate inlet openings of the anode intermediate plate or the cathode intermediate plate are components of the respective first through-channel and the respective separate outlet openings of the anode intermediate plate or the cathode intermediate plate are components of the respective second through-channel.

In this case, the respective first and second through-channels have the corresponding respective inlet and outlet openings of the anode intermediate plate and the cathode intermediate plate, respectively.

In particular, in one embodiment, the first passage channel for the anode gas can be the inlet opening of the cathode intermediate plate for the anode gas, the first passage channel for the cathode gas can be the inlet inlet opening of the cathode intermediate plate for the cathode gas and the inlet opening of the anode intermediate plate for the cathode gas, the first passage channel for the coolant contains the inlet opening of the cathode intermediate plate for the coolant, the second passage channel for the anode gas contains the outlet opening of the cathode intermediate plate for the anode gas, the second passage channel for the cathode gas contains the outlet opening of the cathode intermediate plate for the cathode gas and the outlet opening of the anode intermediate plate for the cathode gas, and the second passage channel for the coolant contains the outlet opening of the cathode intermediate plate for the coolant.

In addition, in another embodiment, the first passage channel for the cathode gas can contain the inlet opening of the anode intermediate plate for the cathode gas, the first passage channel for the anode gas can contain the inlet opening of the cathode intermediate plate for the anode gas and the inlet opening of the anode intermediate plate for the anode gas, the first passage channel for the coolant can contain the inlet opening of the anode intermediate plate for the coolant, the second passage channel for the cathode gas can contain the outlet opening of the anode intermediate plate for the cathode gas, the second passage channel for the anode gas can contain the outlet opening of the cathode intermediate plate for the anode gas and the outlet opening of the anode intermediate plate for the anode gas, and the second passage channel for the coolant can contain the outlet opening of the anode intermediate plate for the coolant.

Furthermore, the respective inlet openings and outlet openings can be openings in the anode intermediate plate or the cathode intermediate plate extending in the stacking direction.

In this case, flow channels are also provided in the anode intermediate plate or the cathode intermediate plate, which, in one embodiment, extend perpendicular to the stack direction from the respective inlet or outlet openings for the anode gas, such as hydrogen, and the cathode gas, such as oxygen, into the region in which the corresponding flow fields are arranged, in order to enable the anode gas and the cathode gas to flow to the corresponding flow fields during operation of the fuel cell stack, and unused anode gas and cathode gas, as well as the reaction products generated during the chemical reaction between the anode gas and the cathode gas, such as water, to flow away from the corresponding flow fields.

Furthermore, flow channels are provided in the anode intermediate plate or the cathode intermediate plate, which extend, preferably linearly, in some embodiments at least in sections linearly, zigzag-shaped, sinusoidal and/or meander-like, between the inlet and outlet openings for the coolant in order to be able to achieve homogeneous cooling of the anode intermediate plate or the cathode intermediate plate.

• a2) Bereitstellen einer ersten und einer zweiten Trägerplatte, und
• b1) Anordnen der ersten und zweiten Trägerplatte derart, dass der Stapel plattenförmiger Komponenten zwischen der ersten und zweiten Trägerplatte positioniert ist, um einen Transportstapel zu bilden, wobei

in Schritt c) der Transportstapel entlang der Stapelrichtung des Stapels plattenförmiger Komponenten derart verspannt wird, dass die plattenförmigen Komponenten durch die Verspannung, in einer Ausführung verrutschsicher, gehalten werden.According to one embodiment, the method further comprises the steps:

• a2) providing a first and a second carrier plate, and
• b1) arranging the first and second carrier plates such that the stack of plate-shaped components is positioned between the first and second carrier plates to form a transport stack, wherein

in step c) the transport stack is clamped along the stacking direction of the stack of plate-shaped components in such a way that the plate-shaped components are held by the clamping, in one embodiment in a slip-proof manner.

In one embodiment, this makes it possible to reduce the clamping force acting locally on the axial end faces of the stack of plate-shaped components, thereby reducing the risk of damage to the plate-shaped components located at the ends.

Preferably, the first and second carrier plates, which are, for example, interchangeable load carriers, have a projection which projects radially beyond the stack of plate-shaped components and in which one or more recesses are arranged in the radial direction and in which the bands can be arranged in sections. In this way, the risk of damage to the stack of plate-shaped components can be further reduced.

• a3) Bereitstellen einer als Kathodenendplatte ausgebildeten plattenförmigen Komponente und einer als Anodenendplatte ausgebildeten plattenförmigen Komponente, und
• b2) Anordnen der Kathodenendplatte und der Anodenendplatte derart, dass der Stapel plattenförmiger Komponenten zwischen der Kathodenendplatte und der Anodenendplatte positioniert ist, um einen Transportstapel zu bilden, wobei

in Schritt c) der Transportstapel entlang der Stapelrichtung des Bipolarplattenstapels derart verspannt wird, dass die mehreren plattenförmigen Komponenten durch die Verspannung, in einer Ausführung verrutschsicher, gehalten werden.According to one embodiment, the method further comprises the steps:

• a3) providing a plate-shaped component designed as a cathode end plate and a plate-shaped component designed as an anode end plate, and
• b2) arranging the cathode end plate and the anode end plate such that the stack of plate-shaped components is positioned between the cathode end plate and the anode end plate to form a transport stack, wherein

in step c) the transport stack is clamped along the stacking direction of the bipolar plate stack in such a way It is ensured that the several plate-shaped components are held in place by the tensioning, in one design so that they cannot slip.

• d) Einbringen des verspannten Stapels plattenförmiger Komponenten oder des verspannten Transportstapels in einen Behälter.

According to one embodiment, the method further comprises the step:

• d) Placing the clamped stack of plate-shaped components or the clamped transport stack into a container.

In one embodiment, the clamped stack of plate-shaped components located in the container, preferably completely surrounded by it, or the clamped transport stack can be safely transported while protected by the container.

• a) Bereitstellen eines nach einem vorstehend beschriebenen Verfahren zum Verpacken von mehreren plattenförmigen Komponenten für einen Brennstoffzellenstapel verpackten Stapels plattenförmiger Komponenten,
• b) Verbinden des ersten Durchgangskanals für das Anodengas und/oder des ersten Durchgangskanals für das Kathodengas und/oder des ersten Durchgangskanals für das Kühlmittel mit einer jeweiligen ersten Fluidleitung, Verbinden des zweiten Durchgangskanals für das Anodengas und/oder des zweiten Durchgangskanals für das Kathodengas und/oder des zweiten Durchgangskanals für das Kühlmittel mit einer jeweiligen zweiten Fluidleitung, und
• c) Spülen des Stapels plattenförmiger Komponenten mit einem Spülmedium, in einer Ausführung deionisiertem Wasser oder vollentsalztem Wasser, durch Zuführen des Spülmediums zu dem Stapel plattenförmiger Komponenten über zumindest eine der ersten Fluidleitungen und durch Abführen des Spülmediums von dem Stapel plattenförmiger Komponenten über die entsprechende(n) zweite(n) Fluidleitung(en), und/oder
• d) Spülen des Stapels plattenförmiger Komponenten mit dem Spülmedium durch Zuführen des Spülmediums zu dem Stapel plattenförmiger Komponenten über zumindest eine der zweiten Fluidleitungen und durch Abführen des Spülmediums von dem Stapel plattenförmiger Komponenten über die entsprechende(n) erste(n) Fluidleitung(en).

According to a second aspect of the present invention, a method for providing a plurality of plate-shaped components for producing a fuel cell stack according to one embodiment comprises the following steps:

• a) providing a stack of plate-shaped components packaged according to a method described above for packaging a plurality of plate-shaped components for a fuel cell stack,
• b) connecting the first passage channel for the anode gas and/or the first passage channel for the cathode gas and/or the first passage channel for the coolant to a respective first fluid line, connecting the second passage channel for the anode gas and/or the second passage channel for the cathode gas and/or the second passage channel for the coolant to a respective second fluid line, and
• c) rinsing the stack of plate-shaped components with a rinsing medium, in one embodiment deionized water or demineralized water, by supplying the rinsing medium to the stack of plate-shaped components via at least one of the first fluid lines and by removing the rinsing medium from the stack of plate-shaped components via the corresponding second fluid line(s), and/or
• d) flushing the stack of plate-shaped components with the flushing medium by supplying the flushing medium to the stack of plate-shaped components via at least one of the second fluid lines and by removing the flushing medium from the stack of plate-shaped components via the corresponding first fluid line(s).

In one embodiment, this advantageously allows contaminants or particles located within the stack of plate-shaped components to be flushed out.

In this case, steps c) and d) are preferably carried out one after the other in order to better remove contaminants or particles adhering within the stack of plate-shaped components.

Furthermore, a rinsing medium with a temperature in the range of 50 °C to 60 °C is preferably used for this purpose.

• e) Anlegen eines Unterdrucks an dem Stapel plattenförmiger Komponenten durch Anschließen einer Fluidpumpe an zumindest eine der ersten Fluidleitungen und Betreiben der Fluidpumpe, und/oder
• f) Anlegen eines Unterdrucks an dem Stapel plattenförmiger Komponenten durch Anschließen der Fluidpumpe an zumindest eine der zweiten Fluidleitungen und Betreiben der Fluidpumpe.

According to one embodiment, the method further comprises the step:

• e) applying a negative pressure to the stack of plate-shaped components by connecting a fluid pump to at least one of the first fluid lines and operating the fluid pump, and/or
• f) applying a negative pressure to the stack of plate-shaped components by connecting the fluid pump to at least one of the second fluid lines and operating the fluid pump.

In some designs, this allows the bipolar plate stack or stack to be dried.

In some versions, a negative pressure in the range of 70 mbar to 80 mbar can be applied to improve drying.

Furthermore, in some embodiments, the same negative pressure can be applied to each of the first fluid lines or each of the second fluid lines in order to reduce the risk of damage to the plate-shaped components.

In some embodiments, during the execution of steps e) or f), a pressure source for a gas, in some embodiments dry, particle-free gas such as air, can be connected to the respective other fluid lines of the first and second fluid lines, with which the gas is conveyed into the first or second fluid lines in order to be able to further improve the drying. The gas can have a temperature in the range of 30 °C to 40 °C, in some embodiments 30 °C to 35 °C, whereby in the case of the rinsing medium being deionized water or demineralized water, the rinsing medium can be brought to the boil when a negative pressure in the range of 70 mbar to 80 mbar is applied.

• g) Lösen der Verspannung des Stapels plattenförmiger Komponenten, und
• h) Zerlegen des Stapels plattenförmiger Komponenten durch Trennung der mehreren plattenförmigen Komponenten voneinander.

In some embodiments, the method further comprises the steps of:

• g) releasing the tension of the stack of plate-shaped components, and
• h) disassembling the stack of plate-shaped components by separating the plurality of plate-shaped components from one another.

This allows, in some embodiments, the fuel cell stack to be finally assembled using the separate plate-shaped components together with other components of the fuel cell stack, such as the membrane.

• mehrere als Bipolarplatten ausgebildete plattenförmige Komponenten mit einer Anodenseite und einer Kathodenseite, wobei eine Seite ausgewählt aus der Anodenseite und der Kathodenseite zumindest einen erhabenen Flächenabschnitt aufweist, und die andere Seite ausgewählt aus der Anodenseite und der Kathodenseite zumindest einen, in einer Ausführung ebenen bzw. glatten, Oberflächenabschnitt aufweist, wobei
• die mehreren Bipolarplatten derart gestapelt sind, dass jeweils die Anodenseite und die Kathodenseite benachbarter Bipolarplatten einander zugewandt und in direktem Kontakt miteinander sind, und einen Bipolarplattenstapel bilden, und
• der Bipolarplattenstapel entlang einer Stapelrichtung des Bipolarplattenstapels derart, in einer Ausführung mittels eines oder mehrerer Bänder, verspannt ist, dass
• durch die Verspannung und einen jeweiligen Kontakt des zumindest einen erhabenen Flächenabschnitts der einen Seite einer Bipolarplatte mit dem zumindest einen Oberflächenabschnitt der anderen Seite einer anderen Bipolarplatte jeweiliger benachbarter Bipolarplatten eine jeweilige Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen den jeweiligen benachbarten Bipolarplatten hergestellt ist, sodass die mehreren Bipolarplatten verrutschsicher gehalten sind.

According to a third aspect of the present invention, a stack of plate-shaped components for a fuel cell stack according to one embodiment comprises:

• a plurality of plate-shaped components designed as bipolar plates with an anode side and a cathode side, wherein one side selected from the anode side and the cathode side has at least one raised surface section, and the other side selected from the anode side and the cathode side has at least one, in one embodiment flat or smooth, surface section, wherein
• the plurality of bipolar plates are stacked such that the anode side and the cathode side of adjacent bipolar plates face each other and are in direct contact with each other, forming a bipolar plate stack, and
• the bipolar plate stack is braced along a stacking direction of the bipolar plate stack in such a way, in one embodiment by means of one or more bands, that
• by the bracing and a respective contact of the at least one raised surface portion of one side of a bipolar plate with the at least one surface portion of the other side of another bipolar plate of respective adjacent bipolar plates, a respective connection, in one embodiment a frictional connection, is produced between the respective adjacent bipolar plates, so that the plurality of bipolar plates are held slip-proof.

According to one embodiment, for each pair of adjacent bipolar plates, a fluid-tight connection, in one embodiment in a direction perpendicular to the stacking direction, is established between the adjacent bipolar plates by the contact of the at least one raised surface portion of one side of one bipolar plate with the at least one surface portion of the other side of the other bipolar plate.

According to one embodiment, the plurality of bipolar plates have respective separate inlet openings and outlet openings for an anode gas and/or a cathode gas and/or a coolant, in one embodiment extending along the stacking direction, wherein
the plurality of bipolar plates are stacked in such a way that the separate inlet openings and outlet openings for the anode gas and/or the cathode gas and/or the coolant of the plurality of bipolar plates are each aligned with one another in such a way that a respective first through-channel for the anode gas and/or the cathode gas and/or the coolant is formed in the stacking direction and is formed by the respective inlet openings, and that a respective second through-channel for the anode gas and/or the cathode gas and/or the coolant is formed in the stacking direction and is formed by the respective outlet openings, and
one side selected from the anode side and the cathode side has respective raised surface portions surrounding the respective separate inlet openings and outlet openings, and the other side selected from the anode side and the cathode side has respective surface portions corresponding to the respective raised surface portions.

• eine als Anodenzwischenplatte ausgebildete plattenförmige Komponente und eine als Kathodenzwischenplatte ausgebildete plattenförmige Komponente, wobei die Anodenzwischenplatte eine Anodenseite mit zumindest einem erhabenen Flächenabschnitt, und die Kathodenzwischenplatte eine Kathodenseite mit zumindest einem, in einer Ausführung ebenen bzw. glatten, Oberflächenabschnitt aufweist, wenn die andere Seite der mehreren Bipolarplatten die Kathodenseite ist, und die Kathodenzwischenplatte eine Kathodenseite mit zumindest einem erhabenen Flächenabschnitt, und die Anodenzwischenplatte eine Anodenseite mit zumindest einem, in einer Ausführung ebenen bzw. glatten, Oberflächenabschnitt aufweist, wenn die andere Seite der mehreren Bipolarplatten die Anodenseite ist, wobei
• die mehreren Bipolarplatten derart zwischen der Anoden- und der Kathodenzwischenplatte gestapelt sind, dass,
• wenn die andere Seite der mehreren Bipolarplatten die Anodenseite ist, die Anodenseite einer an einem Ende des Bipolarplattenstapels angeordneten Bipolarplatte der Kathodenseite der Kathodenzwischenplatte mit der Kathodenseite mit dem zumindest einem erhabenen Flächenabschnitt zugewandt ist, und die Kathodenseite einer an einem anderen Ende des Bipolarplattenstapels angeordneten Bipolarplatte der Anodenseite der Anodenzwischenplatte mit der Anodenseite mit dem zumindest einen Oberflächenabschnitt zugewandt ist, und
• wenn die andere Seite der mehreren Bipolarplatten die Kathodenseite ist, die Kathodenseite einer an einem Ende des Bipolarplattenstapels angeordneten Bipolarplatte der Anodenseite der Anodenzwischenplatte mit der Anodenseite mit dem zumindest einem erhabenen Flächenabschnitt zugewandt ist, und die Anodenseite einer an dem anderen Ende des Bipolarplattenstapels angeordneten Bipolarplatte der Kathodenseite der Kathodenzwischenplatte mit der Kathodenseite mit der Oberfläche zugewandt ist,
• und dass der Stapel plattenförmiger Komponenten gebildet ist, welcher den Bipolarplattenstapel sowie die Anodenzwischenplatte und die Kathodenzwischenplatte aufweist, und
• der Stapel plattenförmiger Komponenten entlang der Stapelrichtung des Stapels plattenförmiger Komponenten derart verspannt ist, dass
• durch die Verspannung und einen direkten Kontakt des zumindest einen erhabenen Flächenabschnitts der Anodenseite der Anodenzwischenplatte mit dem zumindest einen Oberflächenabschnitt der Kathodenseite der der Anodenzwischenplatte benachbarten Bipolarplatte eine Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen der Anodenzwischenplatte und der der Anodenzwischenplatte benachbarten Bipolarplatte hergestellt ist, und durch die Verspannung und einen direkten Kontakt des zumindest einen Oberflächenabschnitts der Kathodenseite der Kathodenzwischenplatte mit dem zumindest einen erhabenen Flächenabschnitt der Anodenseite der der Kathodenzwischenplatte benachbarten Bipolarplatte eine Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen der Kathodenzwischenplatte und der der Kathodenzwischenplatte benachbarten Bipolarplatte hergestellt ist, oder
• durch die Verspannung und einen direkten Kontakt des zumindest einen Oberflächenabschnitts der Anodenseite der Anodenzwischenplatte mit dem zumindest einen erhabenen Flächenabschnitt der Kathodenseite der der Anodenzwischenplatte benachbarten Bipolarplatte eine Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen der Anodenzwischenplatte und der der Anodenzwischenplatte benachbarten Bipolarplatte hergestellt ist, und durch die Verspannung und einen direkten Kontakt des zumindest einen erhabenen Flächenabschnitts der Kathodenseite der Kathodenzwischenplatte mit dem zumindest einen Oberflächenabschnitt der Anodenseite der der Kathodenzwischenplatte benachbarten Bipolarplatte eine Verbindung, in einer Ausführung reibschlüssige Verbindung, zwischen der Kathodenzwischenplatte und der der Kathodenzwischenplatte benachbarten Bipolarplatte hergestellt ist, sodass die plattenförmigen Komponenten, in einer Ausführung verrutschsicher, gehalten sind, wobei durch diese Verbindungen optional zusätzlich eine fluiddichte Abdichtung, in einer Ausführung in der zur Stapelrichtung senkrechten Richtung, zwischen der Anodenzwischenplatte und der der Anodenzwischenplatte benachbarten Bipolarplatte und/oder eine fluiddichte Abdichtung, in einer Ausführung in der zur Stapelrichtung senkrechten Richtung, zwischen der Kathodenzwischenplatte und der der Kathodenzwischenplatte benachbarten Bipolarplatte hergestellt ist.

According to one embodiment, the stack further comprises:

• a plate-shaped component designed as an anode intermediate plate and a plate-shaped component designed as a cathode intermediate plate, wherein the anode intermediate plate has an anode side with at least one raised surface section, and the cathode intermediate plate has a cathode side with at least one, in one embodiment flat or smooth, surface section when the other side of the plurality of bipolar plates is the cathode side, and the cathode intermediate plate has a cathode side with at least one raised surface section, and the anode intermediate plate has an anode side with at least one, in one embodiment flat or smooth, surface section when the other side of the plurality of bipolar plates is the anode side, wherein
• the plurality of bipolar plates are stacked between the anode and cathode intermediate plates such that,
• if the other side of the plurality of bipolar plates is the anode side, the anode side of a bipolar plate arranged at one end of the bipolar plate stack is the cathode side the cathode intermediate plate with the cathode side facing the at least one raised surface portion, and the cathode side of a bipolar plate arranged at another end of the bipolar plate stack faces the anode side of the anode intermediate plate with the anode side facing the at least one surface portion, and
• if the other side of the plurality of bipolar plates is the cathode side, the cathode side of a bipolar plate arranged at one end of the bipolar plate stack faces the anode side of the anode intermediate plate with the anode side with the at least one raised surface portion, and the anode side of a bipolar plate arranged at the other end of the bipolar plate stack faces the cathode side of the cathode intermediate plate with the cathode side with the surface,
• and that the stack of plate-shaped components is formed, which comprises the bipolar plate stack as well as the anode intermediate plate and the cathode intermediate plate, and
• the stack of plate-shaped components is clamped along the stacking direction of the stack of plate-shaped components such that
• by the bracing and direct contact of the at least one raised surface section of the anode side of the anode intermediate plate with the at least one surface section of the cathode side of the bipolar plate adjacent to the anode intermediate plate, a connection, in one embodiment a frictional connection, is established between the anode intermediate plate and the bipolar plate adjacent to the anode intermediate plate, and by the bracing and direct contact of the at least one surface section of the cathode side of the cathode intermediate plate with the at least one raised surface section of the anode side of the bipolar plate adjacent to the cathode intermediate plate, a connection, in one embodiment a frictional connection, is established between the cathode intermediate plate and the bipolar plate adjacent to the cathode intermediate plate, or
• by the bracing and direct contact of the at least one surface section of the anode side of the anode intermediate plate with the at least one raised surface section of the cathode side of the bipolar plate adjacent to the anode intermediate plate, a connection, in one embodiment a frictional connection, is established between the anode intermediate plate and the bipolar plate adjacent to the anode intermediate plate, and by the bracing and direct contact of the at least one raised surface section of the cathode side of the cathode intermediate plate with the at least one surface section of the anode side of the bipolar plate adjacent to the cathode intermediate plate, a connection, in one embodiment a frictional connection, is established between the cathode intermediate plate and the bipolar plate adjacent to the cathode intermediate plate, so that the plate-shaped components are held in a slip-proof manner in one embodiment, wherein these connections optionally additionally provide a fluid-tight seal, in one embodiment in the direction perpendicular to the stacking direction, between the anode intermediate plate and the bipolar plate adjacent to the anode intermediate plate and/or a fluid-tight seal, in one embodiment in the direction perpendicular to the stacking direction, between the cathode intermediate plate and the bipolar plate adjacent to the cathode intermediate plate.

According to one embodiment, the anode intermediate plate has a respective separate inlet opening and outlet opening for an anode gas and/or a cathode gas and/or a coolant, which in one embodiment runs along the stacking direction, wherein the cathode intermediate plate has a respective separate inlet opening and outlet opening for an anode gas and/or a cathode gas and/or a coolant, which in one embodiment runs along the stacking direction, and
the at least one raised surface portion of the anode side of the anode intermediate plate has respective raised surface portions which surround the respective separate inlet openings and outlet openings of the anode intermediate plate, and the cathode side of the adjacent bipolar plate has respective surface portions corresponding to the respective raised surface portions of the anode intermediate plate when the other side of the plurality of bipolar plates is the cathode side, or
the at least one raised surface portion of the cathode side of the cathode intermediate plate has respective raised surface portions surrounding the respective separate inlet openings and outlet openings of the cathode intermediate plate, and the anode side of the adjacent bipolar plate has respective surface portions corresponding to the respective raised surface portions of the cathode intermediate plate when the other side of the plurality of bipolar plates is the anode side, wherein
the respective separate inlet openings of the anode intermediate plate or the cathode intermediate plate are components of the respective first through passage channel and the respective separate outlet openings of the anode intermediate plate or the cathode intermediate plate are components of the respective second passage channel.

• einen vorstehend beschriebenen Stapel plattenförmiger Komponenten, und
• entweder eine erste Trägerplatte und eine zweite Trägerplatte, wobei der Stapel plattenförmiger Komponenten zwischen der ersten und zweiten Trägerplatte positioniert ist, sodass der Transportstapel gebildet ist, wobei
• der Transportstapel entlang der Stapelrichtung des Stapels plattenförmiger Komponenten derart verspannt ist, dass die plattenförmigen Komponenten durch die Verspannung, in einer Ausführung verrutschsicher, gehalten sind, oder
• eine als Kathodenendplatte ausgebildete plattenförmige Komponente und eine als Anodenendplatte ausgebildete plattenförmige Komponente, wobei
• der Stapel plattenförmiger Komponenten zwischen der Kathodenendplatte und der Anodenendplatte positioniert ist, sodass der Transportstapel gebildet ist, und
• der Transportstapel entlang der Stapelrichtung des Stapels plattenförmiger Komponenten derart verspannt ist, dass die plattenförmigen Komponenten durch die Verspannung, in einer Ausführung verrutschsicher, gehalten sind.

A transport stack according to a fourth aspect of the invention comprises:

• a stack of plate-shaped components as described above, and
• either a first carrier plate and a second carrier plate, wherein the stack of plate-shaped components is positioned between the first and second carrier plates so that the transport stack is formed, wherein
• the transport stack is braced along the stacking direction of the stack of plate-shaped components in such a way that the plate-shaped components are held by the bracing, in one embodiment, in a slip-proof manner, or
• a plate-shaped component designed as a cathode end plate and a plate-shaped component designed as an anode end plate, wherein
• the stack of plate-shaped components is positioned between the cathode end plate and the anode end plate so that the transport stack is formed, and
• the transport stack is clamped along the stacking direction of the stack of plate-shaped components in such a way that the plate-shaped components are held by the clamping, in one embodiment in a slip-proof manner.

The features and advantages described with respect to the first aspect of the invention and its advantageous embodiment also apply, at least where technically reasonable, to the second aspect, the third aspect and the fourth aspect of the invention and their advantageous embodiment and vice versa.

• 1: einen Transportstapel mit einem Stapel plattenförmiger Komponenten für einen Brennstoffstoffzellenstapel gemäß einer ersten Ausführung,
• 2: einen Transportstapel mit einem Stapel plattenförmiger Komponenten für einen Brennstoffstoffzellenstapel gemäß einer zweiten Ausführung,
• 3 eine plattenförmige Komponente für einen Brennstoffzellenstapel gemäß einer Ausführung,
• 4 einen Abschnitt einer plattenförmigen Komponente für einen Brennstoffzellenstapel gemäß einer Ausführung,
• 5 ein Flussdiagramm zur Veranschaulichung eines Verfahrens zum Verpacken von mehreren plattenförmigen Komponenten für einen Brennstoffzellenstapel gemäß einer Ausführung, und
• 6 ein Flussdiagramm zur Veranschaulichung eines Verfahrens zum Bereitstellen mehrerer plattenförmiger Komponenten für die Herstellung eines Brennstoffzellenstapels gemäß einer Ausführung.

Further features, advantages and possible applications of the invention will become apparent from the following description in conjunction with the figures, in which the same reference numerals are used throughout for the same or corresponding elements of the invention. They show, at least partially schematically:

• 1 : a transport stack with a stack of plate-shaped components for a fuel cell stack according to a first embodiment,
• 2 : a transport stack with a stack of plate-shaped components for a fuel cell stack according to a second embodiment,
• 3 a plate-shaped component for a fuel cell stack according to an embodiment,
• 4 a section of a plate-shaped component for a fuel cell stack according to an embodiment,
• 5 a flow chart illustrating a method for packaging a plurality of plate-shaped components for a fuel cell stack according to an embodiment, and
• 6 a flow chart illustrating a method for providing a plurality of plate-shaped components for producing a fuel cell stack according to an embodiment.

The 1 and 2 illustrate a transport stack with a stack of plate-shaped components for a fuel cell stack according to a first and second embodiment, respectively.

The transport stack 700 has a stack 500 of plate-shaped components 100, 300, 400 for the fuel cell stack. The stack 500 of plate-shaped components 100, 300, 400 has a plurality of plate-shaped components 100, 300, 400 designed as bipolar plates 100 with an anode side 110 and a cathode side 120, wherein one side selected from the anode side 110 and the cathode side 120 has at least one raised surface section 130-1, 130-2, and the other side selected from the anode side 110 and the cathode side 120 has at least one, in particular flat or smooth, surface section 140.

Here, in 1 an embodiment in which the anode side 110 has the at least one raised surface portion 130-1, 130-2, and the cathode side 120 has the at least one flat surface portion 140, while in 2 an embodiment is shown in which the cathode side 120 has the at least one raised surface portion 130-1, 130-2, and the anode side 110 has the at least one flat surface portion 140.

The plurality of bipolar plates 100 are stacked such that the anode side 110 and the cathode side 120 of adjacent bipolar plates 100 face each other and are in direct contact with each other, forming a bipolar plate stack 200.

The bipolar plate stack 200 is clamped along a stacking direction Z of the bipolar plate stack 200 by means of or using one or more bands 180 such that the clamping and a respective contact of the at least one raised surface section 130-1, 130-2 of one side of a bipolar plate 100 with the at least one surface section 140 of the other side of another bipolar plate 100 of respective adjacent bipolar plates 100 creates a respective frictional connection between the respective adjacent bipolar plates 100, so that the plurality of bipolar plates 100 are held in a slip-proof manner.

Here, for each pair of adjacent bipolar plates 100, a fluid-tight connection is produced in a direction X, Y perpendicular to the stacking direction Z between the adjacent bipolar plates 100 by the contact of the at least one raised surface portion 130-1, 130-2 of one side of one bipolar plate 100 with the at least one surface portion 140 of the other side of the other bipolar plate 100.

The plurality of bipolar plates 100 have respective separate inlet openings and outlet openings (not shown) for an anode gas and/or a cathode gas and/or a coolant, which run along the stacking direction Z, wherein the plurality of bipolar plates 100 are stacked in such a way that the separate inlet openings and outlet openings for the anode gas and/or the cathode gas and/or the coolant of the plurality of bipolar plates 100 are each aligned with one another in such a way that a respective first through-channel (not shown) for the anode gas and/or the cathode gas and/or the coolant is formed in the stacking direction Z and formed by the respective inlet openings, and that a respective second through-channel (not shown) for the anode gas and/or the cathode gas and/or the coolant is formed in the stacking direction Z and formed by the respective outlet openings.

One side selected from the anode side 110 and the cathode side 120 has respective raised surface portions 130-2 surrounding the respective separate input openings and output openings, and the other side selected from the anode side 110 and the cathode side 120 has respective surface portions 140 corresponding to the respective raised surface portions 130-2.

The stack 500 further comprises a plate-shaped component designed as an anode intermediate plate 300 and a plate-shaped component designed as a cathode intermediate plate 400, wherein the anode intermediate plate 300 has an anode side 310 with at least one raised surface section 311-1, 311-2, and the cathode intermediate plate 400 has a cathode side 410 with at least one flat or smooth surface section 411 when the other side of the plurality of bipolar plates 100 is the cathode side 120, and the cathode intermediate plate 400 has a cathode side 410 with at least one raised surface section 411-1, 411-2, and the anode intermediate plate 300 has an anode side 310 with at least one flat or smooth surface section 312 when the other side of the plurality of bipolar plates 100 is the anode side 110 is.

The plurality of bipolar plates 100 are stacked between the anode and cathode intermediate plates 300, 400 such that, when the other side of the plurality of bipolar plates 100 is the anode side 110, the anode side 110 of a bipolar plate 100 arranged at one end 201 of the bipolar plate stack 200 faces the cathode side 410 of the cathode intermediate plate 400 with the cathode side 410 with the at least one raised surface portion 411-1, 411-2, and the cathode side 120 of a bipolar plate 100 arranged at another end 202 of the bipolar plate stack 200 faces the anode side 310 of the anode intermediate plate 300 with the anode side 320 with the at least one surface portion 312, and when the other side of the plurality of bipolar plates 100 is the cathode side 120, the cathode side 120 of a bipolar plate 100 arranged at one end 201 of the bipolar plate stack 200 faces the anode side 310 of the anode intermediate plate 300 with the anode side 310 with the at least one raised surface section 311-1, 311-2, and the anode side 110 of a bipolar plate 100 arranged at the other end 202 of the bipolar plate stack 200 faces the cathode side 410 of the cathode intermediate plate 400 with the cathode side 410 with the at least one surface section 412, and that the stack 500 of plate-shaped components 100, 300, 400 is formed, which has the bipolar plate stack 200 as well as the anode intermediate plate 300 and the cathode intermediate plate 400.

In this case, the stack 500 of plate-shaped components 100, 300, 400 is clamped along the stacking direction Z of the stack 500 of plate-shaped components 100, 300, 400 in such a way that, due to the clamping and a direct contact of the at least one raised surface section 311-1, 311-2 of the anode side 310 of the anode intermediate plate 300 with the at least one surface section 140 of the cathode side 120 of the bipolar plate 100 adjacent to the anode intermediate plate 300, a frictional connection is created between the anode intermediate plate 300 and the anode intermediate plate 300. intermediate plate 300 is produced, and by the bracing and direct contact of the at least one surface section 412 of the cathode side 410 of the cathode intermediate plate 400 with the at least one raised surface section 130-1, 130-2 of the anode side 110 of the bipolar plate 100 adjacent to the cathode intermediate plate 400, a frictional connection is produced between the cathode intermediate plate 400 and the bipolar plate 100 adjacent to the cathode intermediate plate 400, or by the bracing and direct contact of the at least one surface section 312 of the anode side 310 of the anode intermediate plate 300 with the at least one raised surface section 130-1, 130-2 of the cathode side 120 of the bipolar plate 100 adjacent to the anode intermediate plate 300, a frictional connection is produced between the Anode intermediate plate 300 and the bipolar plate 100 adjacent to the anode intermediate plate 300, and by the bracing and direct contact of the at least one raised surface section 411-1, 411-2 of the cathode side 410 of the cathode intermediate plate 400 with the at least one surface section 140 of the anode side 110 of the bipolar plate 100 adjacent to the cathode intermediate plate 400, a frictional connection is produced between the cathode intermediate plate 400 and the bipolar plate 100 adjacent to the cathode intermediate plate 400, so that the plate-shaped components 100, 300, 400 are held securely against slipping.

These connections additionally produce a fluid-tight seal in the direction X, Y perpendicular to the stacking direction Z between the anode intermediate plate 300 and the bipolar plate 100 adjacent to the anode intermediate plate 300 and a fluid-tight seal in the direction X, Y perpendicular to the stacking direction Z between the cathode intermediate plate 400 and the bipolar plate 100 adjacent to the cathode intermediate plate 400.

The anode intermediate plate 300 has a respective separate inlet opening and outlet opening (not shown) for an anode gas and/or a cathode gas and/or a coolant, running along the stacking direction Z, and the cathode intermediate plate 400 has a respective separate inlet opening and outlet opening (not shown) for an anode gas and/or a cathode gas and/or a coolant, running along the stacking direction Z.

In the 1 In the embodiment shown, the at least one raised surface portion 311-1, 311-2 of the anode side 310 of the anode intermediate plate 300 has respective raised surface portions 311-2 which surround the respective separate inlet openings and outlet openings of the anode intermediate plate 300, and the cathode side 120 of the adjacent bipolar plate 100 has respective surface portions 140 corresponding to the respective raised surface portions 311-2 of the anode intermediate plate 300.

In the 2 In the embodiment shown, the at least one raised surface portion 411-1, 411-2 of the cathode side 410 of the cathode intermediate plate 400 has respective raised surface portions 411-2 which surround the respective separate inlet openings and outlet openings of the cathode intermediate plate 400, and the anode side 110 of the adjacent bipolar plate 100 has respective surface portions 140 corresponding to the respective raised surface portions 411-2 of the cathode intermediate plate 400.

Here, the respective separate inlet openings of the anode intermediate plate 300 or the cathode intermediate plate 400 are components of the (respective) first passage channel (for the cathode gas, the anode gas and the coolant), and the respective separate outlet openings of the anode intermediate plate 300 or the cathode intermediate plate 400 are components of the (respective) second passage channel (for the cathode gas, the anode gas and the coolant).

According to one embodiment, the transport stack 700 further comprises a first carrier plate 601 and a second carrier plate 602, wherein the stack 500 of plate-shaped components 100, 300, 400 is positioned between the first and second carrier plates 601, 602, so that the transport stack 700 is formed.

Here, the transport stack 700 is braced along the stacking direction Z of the stack 500 of plate-shaped components 100, 300, 400 by means of the one band 180 or the several bands 180 such that the plate-shaped components 100, 300, 400 are held against slipping by the bracing.

According to another embodiment, the transport stack 700 further comprises a plate-shaped component designed as an anode end plate 610 and a plate-shaped component designed as a cathode end plate 611, wherein the stack 500 of plate-shaped components 100, 300, 400 is positioned between the anode end plate 610 and the cathode end plate 611, so that the transport stack 700 is formed.

Here, the transport stack 700 is arranged along the stacking direction Z of the stack 500 of plate-shaped components 100, 300, 400 by means of the one belt 180 or the several belts 180 in such a way that tensioned so that the several plate-shaped components 100, 300, 400 are held against slipping by the tensioning.

3 shows a plate-shaped component for a fuel cell stack according to an embodiment.

The plate-shaped component 100, 300, 400 can be designed as a bipolar plate 100, as an anode intermediate plate 300 or as a cathode intermediate plate 400.

The bipolar plate 100 has respective inlet openings 141-1, 141-2 and 141-3 for an anode gas, a cathode gas and a coolant and respective outlet openings 142-1, 142-2 and 142-3 for the anode gas, the cathode gas and the coolant.

An intermediate plate selected from the anode intermediate plate 300 and the cathode intermediate plate 400 also has respective inlet openings 340-1, 340-2, 340-3 and 440-1, 440-2, 440-3 for the anode gas, the cathode gas and the coolant and respective outlet openings 341-1, 341-2, 341-3 and 441-1, 441-2, 441-3 for the anode gas, the cathode gas and the coolant.

The other intermediate plate, on the other hand, has only one inlet opening 340-1, 440-1 and one outlet opening 341-1, 441-1 for the corresponding gas, wherein the anode intermediate plate 300 has one inlet opening 340-1 and one outlet opening 341-1 for the cathode gas, and the cathode intermediate plate 400 has one inlet opening 440-1 and one outlet opening 441-1 for the anode gas.

Furthermore, the bipolar plate 100, the anode intermediate plate 300 and the cathode intermediate plate 400 have one or more gas inlets 143 and one or more gas outlets 144, which are connected to the corresponding inlet and outlet openings for the anode gas or the cathode gas via respective flow channels arranged within the respective plate-shaped component 100, 300, 400 in order to enable the inflow of the anode gas or the cathode gas into a flow field 145 or the outflow of the anode gas or the cathode gas from the flow field 145.

4 shows a portion of a plate-shaped component for a fuel cell stack according to an embodiment.

The plate-shaped component 100, 300, 400 can be designed as a bipolar plate 100, as an anode intermediate plate 300 or as a cathode intermediate plate 400.

The respective plate-shaped component 100, 300, 400 has the respective raised surface sections 130-1, 311-1, 411-1 described above, which radially surround the flow field 145 of the anode side 110 or the cathode side 120 of the bipolar plate 100 or the corresponding flow field 145 of the anode side 310 of the anode intermediate plate 300 or the corresponding flow field 145 of the cathode side 410 of the cathode intermediate plate 400.

Furthermore, the respective plate-shaped component 100, 300, 400 has the respective raised surface sections 130-2, 311-2, 411-2 described above, which surround the respective inlet opening 141-2, 340-2, 440-2, as well as the respective raised surface sections 130-2, 311-2, 411-2 described above, not shown, which surround the inlet openings 141-1, 141-3, 340-1, 340-3, 440-1, 440-3 and outlet openings 142-1, 142-2, 142-3, 341-1, 341-2, 341-3, 441-1, 441-2, 441-3.

5 shows a flow chart illustrating a method for packaging a plurality of plate-shaped components for a fuel cell stack according to an embodiment.

In a step S10, a plurality of plate-shaped components 100, 300, 400 designed as bipolar plates 100 are provided with an anode side 110 and a cathode side 120, wherein one side selected from the anode side 110 and the cathode side 120 has at least one raised surface section 130-1, 130-2, and the other side selected from the anode side 110 and the cathode side 120 has at least one, in some embodiments flat or smooth, surface section 140,

In a step S20, the plurality of bipolar plates 100 are stacked such that the anode side 110 and the cathode side 120 of adjacent bipolar plates 100 face each other and are in direct contact with each other, thereby forming a bipolar plate stack 200.

In a step S30, the bipolar plate stack 200 is clamped using one or more bands 180 along a stacking direction Z of the bipolar plate stack 200 such that the clamping and a respective contact of the at least one raised surface section 130-1, 130-2 of one side of a bipolar plate 100 with the at least one surface section 140 of the other side of another bipolar plate 100 of respective adjacent bipolar plates 100 creates a respective frictional connection is established between the respective adjacent bipolar plates 100, so that the plurality of bipolar plates 100 are held securely in place.

In some embodiments, the bipolar plate stack 200 is further clamped in such a way that the clamping and the respective contact of the at least one raised surface section 130-1, 130-2 of one side of one bipolar plate 100 with the at least one surface section 140 of the other side of the other bipolar plate 100 of the respective adjacent bipolar plates 100 brings about a respective fluid-tight seal in a direction X, Y perpendicular to the stacking direction Z between the respective adjacent bipolar plates 100.

In some embodiments, in step S10, a plurality of bipolar plates 100 are provided with respective separate inlet openings 141-1, 141-2, 141-3 and outlet openings 142-1, 142-2, 142-3 for an anode gas and/or a cathode gas and/or a coolant, each running along the stacking direction Z, wherein in step S20 the plurality of bipolar plates 100 are stacked such that the separate inlet openings 141-1, 141-2, 141-3 and outlet openings 142-1, 142-2, 142-3 for the anode gas and/or the cathode gas and/or the coolant of the plurality of bipolar plates 100 are each aligned with one another such that a respective first through-channel running in the stacking direction Z and having the respective inlet openings 141-1, 141-2, 141-3 for the anode gas and/or the cathode gas and/or the coolant, and that a respective second through-channel for the anode gas and/or the cathode gas and/or the coolant is formed, running in the stacking direction Z and having the respective outlet openings 142-1, 142-2, 142-3, and one side selected from the anode side 110 and the cathode side 120 has respective raised surface sections 130-2 which surround the respective separate inlet openings 141-1, 141-2, 141-3 and outlet openings 142-1, 142-2, 142-3, and the other side selected from the anode side 110 and the cathode side 120 has respective surface sections 140 corresponding to the respective raised surface sections 130-2.

In some embodiments, the method further comprises step S11 in which a plate-shaped component 100, 300, 400 designed as an anode intermediate plate 300 and a plate-shaped component 100, 300, 400 designed as a cathode intermediate plate 400 are provided, wherein the anode intermediate plate 300 has an anode side 310 with at least one raised surface section 311-1, 311-2, and the cathode intermediate plate 400 has a cathode side 410 with at least one, in some embodiments flat or smooth, surface section 411, when the other side of the plurality of bipolar plates 100 is the cathode side 120, and the cathode intermediate plate 400 has a cathode side 410 with at least one raised surface section 411-1, 411-2, and the anode intermediate plate 300 has a Anode side 310 with at least one, in some embodiments flat or smooth, surface portion 312 when the other side of the plurality of bipolar plates 100 is the anode side 110.

In this case, in step S20, the plurality of bipolar plates 100 are stacked between the anode and the cathode intermediate plate 300, 400 in such a way that, when the other side of the plurality of bipolar plates 100 is the anode side 110, the anode side 110 of a bipolar plate 100 arranged at one end 201 of the bipolar plate stack 200 faces the cathode side 410 of the cathode intermediate plate 400 with the cathode side 410 with the at least one raised surface section 411-1, 411-2, and the cathode side 120 of a bipolar plate 100 arranged at another end 202 of the bipolar plate stack 200 faces the anode side 310 of the anode intermediate plate 300 with the anode side 320 with the at least one surface section 312, and when the other Side of the plurality of bipolar plates 100 is the cathode side 120, the cathode side 120 of a bipolar plate 100 arranged at one end 201 of the bipolar plate stack 200 faces the anode side 310 of the anode intermediate plate 300 with the anode side 310 with the at least one raised surface section 311-1, 311-2, and the anode side 110 of a bipolar plate 100 arranged at the other end 202 of the bipolar plate stack 200 faces the cathode side 410 of the cathode intermediate plate 400 with the cathode side 410 with the at least one surface section 412.

This forms a stack 500 of plate-shaped components 100, 300, 400, which comprises the bipolar plate stack 200 as well as the anode intermediate plate 300 and the cathode intermediate plate 400.

Furthermore, in this case, in step S30, the stack 500 of plate-shaped components 100, 300, 400 is clamped along the stacking direction Z such that
by the tension and direct contact of the at least one raised surface section 311-1, 311-2 of the anode side 310 of the anode intermediate plate 300 with the at least one surface section 140 of the cathode side 120 of the bipolar plate 100 adjacent to the anode intermediate plate 300, a frictional connection between the anode intermediate plate 300 and that of the anodes intermediate plate 300 adjacent bipolar plate 100 is produced, and by the tension and direct contact of the at least one surface section 412 of the cathode side 410 of the cathode intermediate plate 400 with the at least one raised surface section 130-1, 130-2 of the anode side 110 of the bipolar plate 100 adjacent to the cathode intermediate plate 400, a frictional connection is produced between the cathode intermediate plate 400 and the bipolar plate 100 adjacent to the cathode intermediate plate 400, or
by the bracing and direct contact of the at least one surface section 312 of the anode intermediate plate 300 with the at least one raised surface section 130-1, 130-2 of the cathode side 120 of the bipolar plate 100 adjacent to the anode intermediate plate 300, a frictional connection is established between the anode intermediate plate 300 and the bipolar plate 100 adjacent to the anode intermediate plate 300, and by the bracing and direct contact of the at least one raised surface section 411-1, 411-2 of the cathode side 410 of the cathode intermediate plate 400 with the at least one surface section 140 of the bipolar plate 100 adjacent to the cathode intermediate plate 400, a frictional connection is established between the cathode intermediate plate 400 and the bipolar plate 100 adjacent to the cathode intermediate plate 400, so that the plurality of Bipolar plates 100, the anode intermediate plate 300 and the cathode intermediate plate 400 are held securely in place.

These connections additionally provide a fluid-tight seal in the direction X, Y perpendicular to the stacking direction Z between the anode intermediate plate 300 and the bipolar plate 100 adjacent to the anode intermediate plate 300 and a fluid-tight seal in the direction X, Y perpendicular to the stacking direction Z between the cathode intermediate plate 400 and the bipolar plate 100 adjacent to the cathode intermediate plate 400.

In some embodiments, in step S11, an anode intermediate plate 300 with a respective separate inlet opening 340-1, 340-2, 340-3 and outlet opening 341-1, 341-2, 341-3 for an anode gas and/or a cathode gas and/or a coolant, running along the stacking direction Z, and a cathode intermediate plate 400 with a respective separate inlet opening 440-1, 440-2, 440-3 and outlet opening 441-1, 441-2, 441-3 for an anode gas and/or a cathode gas and/or a coolant, running along the stacking direction Z, are provided.

Here, the at least one raised surface section 311-1, 311-2 of the anode side 310 of the anode intermediate plate 300 has respective raised surface sections 311-2 which surround the respective separate inlet openings 340-1, 340-2, 340-3 and outlet openings 341-1, 341-2, 341-3 of the anode intermediate plate 300, and the cathode side 120 of the adjacent bipolar plate 100 has respective surface sections 140 corresponding to the respective raised surface sections 311-2 of the anode intermediate plate 300 if the other side of the plurality of bipolar plates 100 is the cathode side 120, or the at least one raised surface section 411-1, 411-2 of the cathode side 410 of the cathode intermediate plate 400 has respective raised surface portions 411-2 surrounding the respective separate input openings 440-1, 440-2, 440-3 and output openings 441-1, 441-2, 441-3 of the cathode intermediate plate 400, and the anode side 110 of the adjacent bipolar plate 100 has respective surface portions 140 corresponding to the respective raised surface portions 311-2 of the cathode intermediate plate 400 when the other side of the plurality of bipolar plates 100 is the anode side 110.

The respective separate inlet openings 340-1, 340-2, 340-3; 440-1, 440-2, 440-3 of the anode intermediate plate 300 or the cathode intermediate plate 400 are components of the respective first through-channel, and the respective separate outlet openings 341-1, 341-2, 341-3; 441-1, 441-2, 441-3 of the anode intermediate plate 300 or the cathode intermediate plate 400 are components of the respective second through-channel.

In some embodiments, the method further comprises step S12 in which a first and a second carrier plate 601, 602 are provided, and step S21 in which the first and second carrier plates 601, 602 are arranged such that the stack 500 of plate-shaped components 100, 300, 400 is positioned between the first and the second carrier plate 601, 602, thereby forming a transport stack 700.

In step S30, the transport stack 700 is clamped along the stacking direction Z of the stack 500 of plate-shaped components 100, 300, 400, in particular by means of the one band 180 or the several bands 180, such that the plate-shaped components 100, 300, 400 are held in place by the clamping in a slip-proof manner.

In some embodiments, the method further comprises step S13 in which a plate-shaped component formed as an anode end plate 610 and a plate-shaped component formed as a cathode end plate 611 are provided, and step S22 in which the anode end plate 610 and the cathode end plate 611 are arranged such that the stack 500 plate-shaped components 100, 300, 400 is positioned between the anode end plate 610 and the cathode end plate 611, thereby forming a transport stack 700.

In step S30, the transport stack 700 is clamped along the stacking direction Z of the bipolar plate stack 200, in particular by means of the one band 180 or the several bands 180, such that the several plate-shaped components 100, 300, 400 are held against slipping by the clamping.

In some embodiments, the method further comprises step S40 in which the clamped stack 500 of plate-shaped components 100, 300, 400 or the clamped transport stack 700 is placed in a container.

6 shows a flow chart illustrating a method for providing a plurality of plate-shaped components for producing a fuel cell stack according to an embodiment.

In a step S100, a packaged stack 500 of plate-shaped components 100, 300, 400 is provided.

In a step S110, the first passageway for the anode gas and the first passageway for the cathode gas and the first passageway for the coolant are connected to a respective first fluid line, and the second passageway for the anode gas and the second passageway for the cathode gas and the second passageway for the coolant are connected to a respective second fluid line.

In a step S120, the stack 500 of plate-shaped components 100, 300, 400 is rinsed with a rinsing medium, for example deionized water or demineralized water, by supplying the rinsing medium to the stack of plate-shaped components 100, 300, 400 via at least one of the first fluid lines and by removing the rinsing medium from the stack 500 of plate-shaped components 100, 300, 400 via the corresponding second fluid line(s).

In addition or alternatively to step S120, in a step S130 the stack 500 of plate-shaped components 100, 300, 400 is flushed with the flushing medium by supplying the flushing medium to the stack 500 of plate-shaped components 100, 300, 400 via at least one of the second fluid lines and by removing the flushing medium from the stack 500 of plate-shaped components 100, 300, 400 via the corresponding first fluid line(s).

In a step S140, a negative pressure is applied to the stack 500 of plate-shaped components 100, 300, 400 by connecting a fluid pump to at least one of the first fluid lines and operating the fluid pump.

Additionally or alternatively to step S140, in a step S150 a negative pressure is applied to the stack 500 of plate-shaped components 100, 300, 400 by connecting the fluid pump to at least one of the second fluid lines and operating the fluid pump.

In a step S160, the tension of the stack 500 of plate-shaped components 100, 300, 400 is released, wherein in a step S170 the stack of plate-shaped components 100, 300, 400 is disassembled by separating the plurality of plate-shaped components 100, 300, 400 from one another.

List of reference symbols

100

Bipolar plate

110

Anode side of the bipolar plate

120

Cathode side of the bipolar plate

130

raised surface section of the bipolar plate

140

Surface section of the bipolar plate

141

Entrance opening of the bipolar plate

142

Bipolar plate outlet opening

143

Gas inlet

144

Gas outlet

145

Flow field

180

tape

200

Bipolar plate stack

201

one end of the bipolar plate stack to be produced

202

other end of the bipolar plate stack to be produced

300

Anode intermediate plate

310

Anode side of the anode intermediate plate

311

raised surface section of the anode intermediate plate

312

Surface section of the anode intermediate plate

340

Inlet opening of the anode intermediate plate

341

Outlet opening of the anode intermediate plate

400

Cathode intermediate plate

410

Cathode side of the cathode intermediate plate

411

raised surface section of the cathode intermediate plate

412

Surface section of the cathode intermediate plate

440

Entrance opening of the cathode intermediate plate

441

Cathode intermediate plate outlet opening

500

Stack of plate-shaped components

601

first carrier plate

602

second carrier plate

610

Anode end plate

611

Cathode end plate

700

Transport stack

Z

Stacking direction

Claims (17)

Method for packaging a plurality of plate-shaped components (100, 300, 400) for a fuel cell stack, comprising the steps: a) providing a plurality of plate-shaped components (100, 300, 400) designed as bipolar plates (100) with an anode side (110) and a cathode side (120), wherein one side selected from the anode side (110) and the cathode side (120) has at least one raised surface section (130-1, 130-2), and the other side selected from the anode side (110) and the cathode side (120) has at least one, in particular flat, surface section (140), b) stacking the plurality of bipolar plates (100) such that the anode side (110) and the cathode side (120) of adjacent bipolar plates (100) face each other and are in direct contact with each other are to form a bipolar plate stack (200), and c) bracing the bipolar plate stack (200), in particular using one or more bands (180), along a stacking direction (Z) of the bipolar plate stack (200) such that by bracing and a respective contact of the at least one raised surface section (130-1, 130-2) of one side of a bipolar plate (100) with the at least one surface section (140) of the other side of another bipolar plate (100) of respective adjacent bipolar plates (100), a respective connection, in particular a frictional connection, is produced between the respective adjacent bipolar plates (100), so that the plurality of bipolar plates (100) are held, in particular in a slip-proof manner. Procedure according to Claim 1 , in which in step c) the bipolar plate stack (200) is clamped in such a way that the clamping and the respective contact of the at least one raised surface section (130-1, 130-2) of one side of the one bipolar plate (100) with the at least one surface section (140) of the other side of the other bipolar plate (100) of the respective adjacent bipolar plates (100) brings about a respective fluid-tight seal, in particular in a direction (X, Y) perpendicular to the stacking direction (Z), between the respective adjacent bipolar plates (100). Procedure according to Claim 1 or 2 , in which in step a) a plurality of bipolar plates (100) with respective separate inlet openings (141-1, 141-2, 141-3) and outlet openings (142-1, 142-2, 142-3) for an anode gas and/or a cathode gas and/or a coolant are provided, in particular running along the stacking direction (Z), in step b) the plurality of bipolar plates (100) are stacked in such a way that the separate inlet openings (141-1, 141-2, 141-3) and outlet openings (142-1, 142-2, 142-3) for the anode gas and/or the cathode gas and/or the coolant of the plurality of bipolar plates (100) are each aligned with one another in such a way that a respective inlet opening (141-1, 141-2, 141-3) is formed for the anode gas and/or the cathode gas and/or the coolant, and that a respective second through-channel for the anode gas and/or the cathode gas and/or the coolant is formed, which runs in the stacking direction (Z) and has the respective outlet openings (142-1, 142-2, 142-3), and that one side selected from the anode side (110) and the cathode side (120) has respective raised surface sections (130-2) which surround the respective separate inlet openings (141-1, 141-2, 141-3) and outlet openings (142-1, 142-2, 142-3), and the other side selected from the anode side (110) and the cathode side (120) has respective surface sections corresponding to the respective raised surface sections (130-2). (140). Procedure according to Claim 3 , further comprising the step: a1) providing a plate-shaped component (100, 300, 400) designed as an anode intermediate plate (300) and a plate-shaped component (100, 300, 400) designed as a cathode intermediate plate (400), wherein the anode intermediate plate (300) has an anode side (310) with at least one raised surface section (311-1, 311-2), and the cathode intermediate plate (400) has a cathode side (410) with at least one, in particular flat, surface section (411), if the other side of the plurality of bipolar plates (100) is the cathode side (120), and the cathode intermediate plate (400) has a cathode side (410) with at least one raised surface section (411-1, 411-2), and the anode intermediate plate (300) has an anode side (310) with at least one, in particular flat, surface section (312), if the other side of the plurality of bipolar plates (100) is the anode side (110), wherein in step b) the plurality of bipolar plates (100) are arranged between the anode and the cathode intermediate plate (300, 400) are stacked in such a way that, when the other side of the plurality of bipolar plates (100) is the anode side (110), the anode side (110) of a bipolar plate (100) arranged at one end (201) of the bipolar plate stack (200) faces the cathode side (410) of the cathode intermediate plate (400) with the cathode side (410) with the at least one raised surface section (411-1, 411-2), and the cathode side (120) of a bipolar plate (100) arranged at another end (202) of the bipolar plate stack (200) faces the anode side (310) of the anode intermediate plate (300) with the anode side (320) with the at least one surface section (312), and when the other side of the plurality of bipolar plates (100) is the cathode side (120) the cathode side (120) of a bipolar plate (100) arranged at one end (201) of the bipolar plate stack (200) faces the anode side (310) of the anode intermediate plate (300) with the anode side (310) having the at least one raised surface portion (311-1, 311-2), and the anode side (110) of a bipolar plate (100) arranged at the other end (202) of the bipolar plate stack (200) faces the cathode side (410) of the cathode intermediate plate (400) with the cathode side (410) having the at least one surface portion (412) to form a stack (500) of plate-shaped components (100, 300, 400) which comprises the bipolar plate stack (200) as well as the anode intermediate plate (300) and the cathode intermediate plate (400), and in step c) the stack (500) of plate-shaped components (100, 300, 400) is clamped along the stacking direction (Z) of the stack (500) of plate-shaped components (100, 300, 400) in such a way that a connection, in particular a frictional connection, is produced between the anode intermediate plate (300) and the bipolar plate (100) adjacent to the anode intermediate plate (300) by the clamping and direct contact of the at least one raised surface section (311-1, 311-2) of the anode side (310) of the anode intermediate plate (300) with the at least one surface section (140) of the cathode side (120) of the bipolar plate (100) adjacent to the anode intermediate plate (300), and by the clamping and direct contact of the at least one surface section (412) of the cathode side (410) of the cathode intermediate plate (400) with the at least one raised surface section (130-1, 130-2) of the anode side (110) of the bipolar plate (100) adjacent to the cathode intermediate plate (400), a connection, in particular a frictional connection, is established between the cathode intermediate plate (400) and the bipolar plate (100) adjacent to the cathode intermediate plate (400), or by the tensioning and direct contact of the at least one surface section (312) of the anode intermediate plate (300) with the at least one raised surface section (130-1, 130-2) of the cathode side (120) of the bipolar plate (100) adjacent to the anode intermediate plate (300), a connection, in particular a frictional connection, is established between the anode intermediate plate (300) and the bipolar plate adjacent to the anode intermediate plate (300). (100) is produced, and by the bracing and direct contact of the at least one raised surface section (411-1, 411-2) of the cathode side (410) of the cathode intermediate plate (400) with the at least one surface section (140) of the bipolar plate (100) adjacent to the cathode intermediate plate (400), a connection, in particular a frictional connection, is produced between the cathode intermediate plate (400) and the bipolar plate (100) adjacent to the cathode intermediate plate (400), so that the plurality of bipolar plates (100), the anode intermediate plate (300) and the cathode intermediate plate (400) are held, in particular in a slip-proof manner, wherein these connections optionally additionally provide a fluid-tight seal, in particular in the direction (X, Y) perpendicular to the stacking direction (Z), between the anode intermediate plate (300) and the bipolar plate (100) adjacent to the anode intermediate plate (300). and/or a fluid-tight seal, in particular in the direction (X, Y) perpendicular to the stacking direction (Z), is effected between the cathode intermediate plate (400) and the bipolar plate (100) adjacent to the cathode intermediate plate (400). Procedure according to Claim 4 , in which in step a1) an anode intermediate plate (300) with a respective, in particular along the stacking direction (Z), separate inlet opening (340-1, 340-2, 340-3) and outlet opening (341-1, 341-2, 341-3) for an anode gas and/or a cathode gas and/or a coolant, and a cathode intermediate plate (400) with a respective, in particular along the stacking direction (Z) end, separate inlet opening (440-1, 440-2, 440-3) and outlet opening (441-1, 441-2, 441-3) for an anode gas and/or a cathode gas and/or a coolant are provided, and the at least one raised surface section (311-1, 311-2) of the anode side (310) of the anode intermediate plate (300) has respective raised surface sections (311-2) which surround the respective separate inlet openings (340-1, 340-2, 340-3) and outlet openings (341-1, 341-2, 341-3) of the anode intermediate plate (300), and the cathode side (120) of the adjacent bipolar plate (100) has respective raised surface sections (311-2) of the anode intermediate plate (300) has corresponding surface sections (140) when the other side of the plurality of bipolar plates (100) is the cathode side (120), or the at least one raised surface section (411-1, 411-2) of the cathode side (410) of the cathode intermediate plate (400) has respective raised surface sections (411-2) which surround the respective separate inlet openings (440-1, 440-2, 440-3) and outlet openings (441-1, 441-2, 441-3) of the cathode intermediate plate (400), and the anode side (110) of the adjacent bipolar plate (100) has respective surface sections (140) corresponding to the respective raised surface sections (311-2) of the cathode intermediate plate (400) when the other side of the plurality of bipolar plates (100) is the anode side (110), wherein the respective separate inlet openings (340-1, 340-2, 340-3; 440-1, 440-2, 440-3) of the anode intermediate plate (300) or the cathode intermediate plate (400) are components of the respective first through-channel and the respective separate outlet openings (341-1, 341-2, 341-3; 441-1, 441-2, 441-3) of the anode intermediate plate (300) or the cathode intermediate plate (400) are components of the respective second through-channel. Procedure according to Claim 4 or 5 , further comprising the steps: a2) providing a first and a second carrier plate (601, 602), and b1) arranging the first and second carrier plates (601, 602) such that the stack (500) of plate-shaped components (100, 300, 400) is positioned between the first and second carrier plates (601, 602) to form a transport stack (700), wherein in step c) the transport stack (700) is clamped along the stacking direction (Z) of the stack (500) of plate-shaped components (100, 300, 400) such that the plate-shaped components (100, 300, 400) are held by the clamping, in particular in a slip-proof manner. Method according to one of the Claims 4 or 5 , further comprising the steps: a3) providing a plate-shaped component designed as an anode end plate (610) and a plate-shaped component designed as a cathode end plate (611), and b2) arranging the anode end plate (610) and the cathode end plate (611) such that the stack (500) of plate-shaped components (100, 300, 400) is positioned between the anode end plate (610) and the cathode end plate (611) to form a transport stack (700), wherein in step c) the transport stack (700) is clamped along the stacking direction (Z) of the bipolar plate stack (200) such that the plurality of plate-shaped components (100, 300, 400) are held by the clamping, in particular in a slip-proof manner. Method according to one of the Claims 4 until 7 , further comprising the step: d) introducing the clamped stack (500) of plate-shaped components (100, 300, 400) or the clamped transport stack (700) into a container. Method for providing a plurality of plate-shaped components (100, 300, 400) for producing a fuel cell stack, comprising the steps: a) providing a plate-shaped component according to one of the Claims 4 until 8th packaged stack (500) of plate-shaped components (100, 300, 400), b) connecting the first passage channel for the anode gas and/or the first passage channel for the cathode gas and/or the first passage channel for the coolant to a respective first fluid line, connecting the second passage channel for the anode gas and/or the second passage channel for the cathode gas and/or the second passage channel for the coolant to a respective second fluid line, and c) rinsing the stack (500) of plate-shaped components (100, 300, 400) with a rinsing medium, in particular deionized water or demineralized water, by supplying the rinsing medium to the stack of plate-shaped components (100, 300, 400) via at least one of the first fluid lines and by removing the rinsing medium from the stack of plate-shaped components (100, 300, 400) via the corresponding second fluid line(s) and/or d) flushing the stack (500) of plate-shaped components (100, 300, 400) with the flushing medium by supplying the flushing medium to the stack (500) of plate-shaped components (100, 300, 400) via at least one of the second fluid lines and by removing the flushing medium from the stack (500) of plate-shaped components (100, 300, 400) via the corresponding first fluid line(s). Procedure according to Claim 9 , further comprising the step: e) applying a negative pressure to the stack (500) of plate-shaped components (100, 300, 400) by connecting a fluid pump to at least one of the first fluid lines and operating the fluid pump, and/or f) applying a negative pressure to the stack of plate-shaped components (100, 300, 400) by connecting the fluid pump to at least one of the second fluid lines and operating the fluid pump. Procedure according to Claim 9 or 10 , further comprising the steps of: g) releasing the tension of the stack (500) of plate-shaped components (100, 300, 400), and h) disassembling the stack of plate-shaped components (100, 300, 400) by separating the plurality of plate-shaped components (100, 300, 400) from one another. Stack (500) of plate-shaped components (100, 300, 400) for a fuel cell stack, comprising: a plurality of plate-shaped components (100, 300, 400) designed as bipolar plates (100) with an anode side (110) and a cathode side (120), wherein one side selected from the anode side (110) and the cathode side (120) has at least one raised surface section (130-1, 130-2), and the other side selected from the anode side (110) and the cathode side (120) has at least one, in particular flat, surface section (140), wherein the plurality of bipolar plates (100) are stacked in such a way that the anode side (110) and the cathode side (120) of adjacent bipolar plates (100) face each other and are in direct contact with each other, and form a bipolar plate stack (200), and the bipolar plate stack (200) is braced along a stacking direction (Z) of the bipolar plate stack (200), in particular by means of one or more bands (180), such that through the bracing and a respective contact of the at least one raised surface section (130-1, 130-2) of one side of a bipolar plate (100) with the at least one surface section (140) of the other side of another bipolar plate (100) of respective adjacent bipolar plates (100), a respective connection, in particular a frictional connection, is produced between the respective adjacent bipolar plates (100), so that the plurality of bipolar plates (100) are held in a slip-proof manner. Stack by Claim 12 , in which for each pair of adjacent bipolar plates (100) a fluid-tight connection, in particular in a direction (X, Y) perpendicular to the stacking direction (Z), is produced between the adjacent bipolar plates (100) by the contact of the at least one raised surface section (130-1, 130-2) of one side of the one bipolar plate (100) with the at least one surface section (140) of the other side of the other bipolar plate (100). Stack by Claim 12 or 13 , in which the plurality of bipolar plates (100) have respective separate inlet openings (141-1, 141-2, 141-3) and outlet openings (142-1, 142-2, 142-3) for an anode gas and/or a cathode gas and/or a coolant, in particular running along the stacking direction (Z), the plurality of bipolar plates (100) are stacked in such a way that the separate inlet openings (141-1, 141-2, 141-3) and outlet openings (142-1, 142-2, 142-3) for the anode gas and/or the cathode gas and/or the coolant of the plurality of bipolar plates (100) are each aligned with one another in such a way that a respective first Through-channel for the anode gas and/or the cathode gas and/or the coolant is formed, and that a respective second through-channel for the anode gas and/or the cathode gas and/or the coolant is formed, running in the stacking direction (Z) and formed by the respective outlet openings (142-1, 142-2, 142-3), and one side selected from the anode side (110) and the cathode side (120) has respective raised surface sections (130-2) which surround the respective separate inlet openings (141-1, 141-2, 141-3) and outlet openings (142-1, 142-2, 142-3), and the other side selected from the anode side (110) and the cathode side (120) has respective surface sections (140) corresponding to the respective raised surface sections (130-2). Stack after one of the Claims 12 until 14 , further comprising: a plate-shaped component designed as an anode intermediate plate (300) and a plate-shaped component designed as a cathode intermediate plate (400), wherein the anode intermediate plate (300) has an anode side (310) with at least one raised surface section (311-1, 311-2), and the cathode intermediate plate (400) has a cathode side (410) with at least one, in particular flat, surface section (411) when the other side of the plurality of bipolar plates (100) is the cathode side (120), and the cathode intermediate plate (400) has a cathode side (410) with at least one raised surface section (411-1, 411-2), and the anode intermediate plate (300) has an anode side (310) with at least one, in particular flat surface portion (312) when the other side of the plurality of bipolar plates (100) is the anode side (110), wherein the plurality of bipolar plates (100) are stacked between the anode and the cathode intermediate plate (300, 400) in such a way that when the other side of the plurality of bipolar plates (100) is the anode side (110), the anode side (110) of a bipolar plate (100) arranged at one end (201) of the bipolar plate stack (200) faces the cathode side (410) of the cathode intermediate plate (400) with the cathode side (410) with the at least one raised surface portion (411-1, 411-2), and the cathode side (120) of a bipolar plate (100) arranged at another end (202) of the bipolar plate stack (200) faces the cathode side (410) of the cathode intermediate plate (400) Anode side (310) of the anode intermediate plate (300) faces the anode side (320) with the at least one surface section (312), and when the other side of the plurality of bipolar plates (100) is the cathode side (120), the cathode side (120) of a bipolar plate (100) arranged at one end (201) of the bipolar plate stack (200) faces the anode side (310) of the anode intermediate plate (300) with the anode side (310) with the at least one raised surface section (311-1, 311-2), and the anode side (110) of a bipolar plate (100) arranged at the other end (202) of the bipolar plate stack (200) faces the cathode side (410) of the cathode intermediate plate (400) with the cathode side (410) with the at least one Surface section (412) faces, and that the stack (500) of plate-shaped components (100, 300, 400) is formed, which has the bipolar plate stack (200) as well as the anode intermediate plate (300) and the cathode intermediate plate (400), and the stack (500) of plate-shaped components (100, 300, 400) is braced along the stacking direction (Z) of the stack (500) of plate-shaped components (100, 300, 400) in such a way that a connection, in particular frictional connection is established between the anode intermediate plate (300) and the bipolar plate (100) adjacent to the anode intermediate plate (300), and by the bracing and direct contact of the at least one surface section (412) of the cathode side (410) of the cathode intermediate plate (400) with the at least one raised surface section (130-1, 130-2) of the anode side (110) of the bipolar plate (100) adjacent to the cathode intermediate plate (400), a connection, in particular a frictional connection, is established between the cathode intermediate plate (400) and the bipolar plate (100) adjacent to the cathode intermediate plate (400), or by the bracing and direct contact of the at least one surface section (312) of the anode side (310) of the anode intermediate plate (300) with the at least one raised surface section (130-1, 130-2) of the cathode side (120) of the bipolar plate (100) adjacent to the anode intermediate plate (300), a connection, in particular a frictional connection, is established between the anode intermediate plate (300) and the bipolar plate (100) adjacent to the anode intermediate plate (300), and by the bracing and direct contact of the at least one raised surface section (411-1, 411-2) of the cathode side (410) of the cathode intermediate plate (400) with the at least one surface section (140) of the anode side (110) of the bipolar plate (100) adjacent to the cathode intermediate plate (400), a connection, in particular a frictional connection, is established between the cathode intermediate plate (400) and the bipolar plate (100) adjacent to the cathode intermediate plate (400), so that the plate-shaped components (100, 300, 400), in particular in a slip-proof manner, wherein these connections optionally additionally produce a fluid-tight seal, in particular in the direction (X, Y) perpendicular to the stacking direction (Z), between the anode intermediate plate (300) and the bipolar plate (100) adjacent to the anode intermediate plate (300) and/or a fluid-tight seal, in particular in the direction (X, Y) perpendicular to the stacking direction (Z), between the cathode intermediate plate (400) and the bipolar plate (100) adjacent to the cathode intermediate plate (400). Stack by Claim 15 , in which the anode intermediate plate (300) has a respective separate inlet opening (340-1, 340-2, 340-3) and outlet opening (341-1, 341-2, 341-3) for an anode gas and/or a cathode gas and/or a coolant, in particular running along the stacking direction (Z), and the cathode intermediate plate (400) has a respective separate inlet opening (440-1, 440-2, 440-3) and outlet opening (441-1, 441-2, 441-3) for an anode gas and/or a cathode gas and/or a coolant, in particular running along the stacking direction (Z), and the at least one raised surface section (311-1, 311-2) of the anode side (310) of the anode intermediate plate (300) has respective raised surface sections (311-2) which surround the respective separate inlet openings (340-1, 340-2, 340-3) and outlet openings (341-1, 341-2, 341-3) of the anode intermediate plate (300), and the cathode side (120) of the adjacent Bipolar plate (100) has respective surface sections (140) corresponding to the respective raised surface sections (311-2) of the anode intermediate plate (300) when the other side of the plurality of bipolar plates (100) is the cathode side (120), or the at least one raised surface section (411-1, 411-2) of the cathode side (410) of the cathode intermediate plate (400) has respective raised surface sections (411-2) which surround the respective separate inlet openings (440-1, 440-2, 440-3) and outlet openings (441-1, 441-2, 441-3) of the cathode intermediate plate (400), and the anode side (110) of the adjacent bipolar plate (100) has respective raised surface sections (311-2) of the cathode intermediate plate (400) has corresponding surface sections (140) when the other side of the plurality of bipolar plates (100) is the anode side (110), wherein the respective separate inlet openings (340-1, 340-2, 340-3; 440-1, 440-2, 440-3) of the anode intermediate plate (300) or the cathode intermediate plate (400) are components of the respective first through-channel and the respective separate outlet openings (341-1, 341-2, 341-3; 441-1, 441-2, 441-3) of the anode intermediate plate (300) or the cathode intermediate plate (400) are components of the respective second through-channel. Transport stack, comprising: a stack (500) according to one of the Claims 12 until 16 , and either a first carrier plate (601) and a second carrier plate (602), wherein the stack (500) of plate-shaped components (100, 300, 400) is positioned between the first and second carrier plates (601, 602) so that the transport stack (700) is formed, wherein the transport stack (700) is braced along the stacking direction (Z) of the stack (500) of plate-shaped components (100, 300, 400) such that the plate-shaped components (100, 300, 400) are held by the bracing, in particular in a slip-proof manner, or a plate-shaped component designed as an anode end plate (610) and a plate-shaped component designed as a cathode end plate (611), wherein the stack (500) of plate-shaped components (100, 300, 400) is positioned between the anode end plate (610) and the Cathode end plate (611) is positioned so that the transport stack (700) is formed, wherein the transport stack (700) is clamped along the stacking direction (Z) of the stack (500) of plate-shaped components (100, 300, 400) such that the plate-shaped components (100, 300, 400) are held by the clamping, in particular in a slip-proof manner.

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