CN222995439U - Sealing frame and galvanic pile monomer - Google Patents

Sealing frame and galvanic pile monomer Download PDF

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Publication number
CN222995439U
CN222995439U CN202421940385.5U CN202421940385U CN222995439U CN 222995439 U CN222995439 U CN 222995439U CN 202421940385 U CN202421940385 U CN 202421940385U CN 222995439 U CN222995439 U CN 222995439U
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China
Prior art keywords
sealing
water
layer
absorbing layer
membrane electrode
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CN202421940385.5U
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Chinese (zh)
Inventor
王化伟
朱晓春
傅鹏
刘志强
谯康伟
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Weichai Balade Hydrogen Technology Co ltd
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Weichai Balade Hydrogen Technology Co ltd
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Priority to CN202421940385.5U priority Critical patent/CN222995439U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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Abstract

The utility model belongs to the technical field of fuel cells and discloses a sealing frame and a galvanic pile unit, wherein the sealing frame comprises a frame body and a sealing element, the sealing element is arranged on the frame body, the sealing element comprises at least two sealing compound layer groups which are stacked, each sealing compound layer group comprises a first non-water-absorbing layer, a first water-absorbing layer and a second non-water-absorbing layer which are stacked in sequence, a second water-absorbing layer is arranged between every two adjacent sealing compound layer groups, the galvanic pile unit comprises a membrane electrode, two polar plates and two sealing frames, the membrane electrode and the sealing frame are clamped between the two polar plates, the membrane electrode is arranged between the two sealing frames, the polar plates are provided with sealing grooves, and the frame body, the membrane electrode and the polar plates jointly form a sealing space, and the sealing element is arranged in the sealing grooves and/or the sealing space. The sealing element of the sealing frame can realize self-expansion to seal the sealing groove and the sealing space, the size value of the sealing element is not required to be matched and optimized repeatedly, the development period is effectively shortened, and the cost is effectively reduced.

Description

Sealing frame and galvanic pile monomer
Technical Field
The utility model relates to the technical field of fuel cells, in particular to a sealing frame and a galvanic pile unit.
Background
In the prior art, the galvanic pile unit consists of a membrane electrode, an upper polar plate and a lower polar plate and a sealing frame. The membrane electrode is clamped between the upper polar plate and the lower polar plate, and the sealing frame is blocked between the two polar plates and the corresponding ends of the membrane electrode. In general, in order to ensure sealability, seals are provided between the seal frame and the electrode plate and between the seal frame, the upper and lower electrode plates, and the membrane electrode. In the actual production and manufacturing process, if the sealing element is in consistency in batches, the whole pile of the pile is deformed after installation, so that the sealing is invalid and even the pile is damaged, and the size value of the sealing element needs to be matched and optimized repeatedly, so that the development period is greatly prolonged and a large amount of development expenses are generated.
Disclosure of utility model
The utility model aims to provide a sealing frame and a galvanic pile unit, the requirements of a sealing element on design deviation and tolerance are low, repeated matching is not needed to optimize the size value of the sealing element, the development period is effectively shortened, and the cost is saved.
To achieve the purpose, the utility model adopts the following technical scheme:
A sealing rim, comprising:
a frame body;
The sealing piece is arranged at the side part of the frame body and/or the end part of the frame body facing the membrane electrode, wherein,
The sealing piece comprises at least two sealing compound layer groups stacked along a first direction, each sealing compound layer group comprises a first non-water-absorbing layer, a first water-absorbing layer and a second non-water-absorbing layer which are stacked along the first direction in sequence, and a second water-absorbing layer is arranged between every two adjacent sealing compound layer groups.
Preferably, one of the first non-water-absorbing layer and the second non-water-absorbing layer is L-shaped, the other is in a straight shape, the first non-water-absorbing layer and the second non-water-absorbing layer are spliced to form a containing groove, and the first water-absorbing layer is arranged in the containing groove.
Preferably, the first non-water-absorbing layer comprises a first layer part and a second layer part which are arranged at an angle, the first water-absorbing layer is attached to the first layer part, and the second non-water-absorbing layer is attached to the second layer part and the first water-absorbing layer at the same time.
Preferably, the opening of the accommodating groove is disposed toward one side of the membrane electrode.
Preferably, a jack for inserting the proton exchange membrane of the membrane electrode is formed in one side, facing the membrane electrode, of the frame body.
Preferably, the seal is adhesively connected to the bezel body.
A galvanic pile unit comprising the sealing frame of any one of the above, further comprising:
a membrane electrode;
The electrode plates are arranged at intervals in pairs along the first direction, and the membrane electrode and the sealing frame are respectively clamped between the two electrode plates;
The sealing frames are arranged at intervals in pairs along the second direction, and the membrane electrode is positioned between the two sealing frames;
The electrode plate is provided with a sealing groove, the sealing piece at the side part of the frame body is positioned in the sealing groove, and/or the frame body, the membrane electrode and the electrode plate jointly form a sealing space, and the sealing piece of the frame body facing the end part of the membrane electrode is positioned in the sealing space;
the first direction is perpendicular to the second direction.
Preferably, the membrane electrode includes a first gas diffusion layer, a first catalytic layer, a proton exchange membrane, a second catalytic layer and a second gas diffusion layer sequentially stacked along a first direction, where the first gas diffusion layer and the second gas diffusion layer are respectively attached to the electrode plates on the corresponding sides.
Preferably, the frame body is flush with the membrane electrode.
Preferably, a plurality of sealing grooves are formed in the side portion of the frame body at intervals, and the sealing pieces are arranged in a plurality of and in one-to-one correspondence with the sealing grooves.
The beneficial effects are that:
The sealing frame provided by the utility model comprises a frame body and a sealing piece. The sealing piece arranged at the side part of the frame body can seal the frame body and the polar plates, and the sealing piece arranged at the end part of the membrane electrode can seal the frame body, the membrane electrode and the two polar plates. Specifically, the sealed composite layer group of sealing member is including the first non-water-absorbing layer, first water-absorbing layer and the second non-water-absorbing layer that pile up the setting in proper order, is equipped with the second water-absorbing layer between two adjacent sealed composite layer groups, and first non-water-absorbing layer is used for maintaining the basic shape of sealing member with the second non-water-absorbing layer, and first water-absorbing layer and second water-absorbing layer can realize the self-expansion that absorbs water. When the sealing piece is positioned in the sealing groove and the sealing space, mediums such as humidified gas and deionized water are introduced, so that the first water absorption layer and the second water absorption layer absorb water and self-expand, and the sealing groove and the inner peripheral wall of the sealing space are tightly attached after expansion, so that gaps are avoided, and a reliable and effective sealing effect is achieved. The sealing element has low requirements on design deviation and tolerance, the size value of the sealing element is not required to be matched and optimized repeatedly, the development period is effectively shortened, and the cost is saved.
Drawings
FIG. 1 is a schematic cross-sectional view of a seal frame according to the present utility model;
FIG. 2 is a schematic cross-sectional view of a seal member according to an embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of a seal member according to another embodiment of the present utility model;
FIG. 4 is a schematic cross-sectional view of a portion of a galvanic pile element prior to expansion of a seal according to the utility model;
FIG. 5 is a schematic cross-sectional view of a portion of a galvanic pile cell according to the utility model after expansion of the seal.
In the figure:
1. Sealing frame, 11, frame body, 111, jack, 12, sealing piece, 121, first non-water-absorbing layer, 1211, first layer, 1212, second layer, 122, first water-absorbing layer, 123, second non-water-absorbing layer, 1231, third layer, 1232, fourth layer, 124, second water-absorbing layer;
2. The membrane electrode, 21, a first gas diffusion layer, 22, a first catalytic layer, 23, a proton exchange membrane, 24, a second catalytic layer, 25, a second gas diffusion layer;
3. polar plate, 31, sealing groove, 32, sealing space.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Referring to fig. 1 to 5, the present embodiment provides a galvanic pile unit including a membrane electrode 2 and a substrate, and further including a sealing frame 1.
Referring specifically to fig. 1 to 3, the seal bezel 1 includes a bezel body 11 and a seal 12. The seal 12 is provided at the side of the frame body 11 and/or at the end of the frame body 11 facing the membrane electrode 2. The sealing member 12 comprises at least two sealing compound layer groups stacked along a first direction, wherein each sealing compound layer group comprises a first non-water-absorbing layer 121, a first water-absorbing layer 122 and a second non-water-absorbing layer 123 stacked along the first direction, and a second water-absorbing layer 124 is arranged between two adjacent sealing compound layer groups.
Referring specifically to fig. 4 to 5, the electrode plates 3 are arranged at intervals in pairs along the first direction, and the membrane electrode 2 and the seal frame 1 are respectively sandwiched between the two electrode plates 3. The sealing frames 1 are arranged at intervals in pairs along the second direction, and the membrane electrode 2 is positioned between the two sealing frames 1. The electrode plate 3 is provided with a sealing groove 31, the sealing piece 12 at the side part of the frame body 11 is positioned in the sealing groove 31, and/or the frame body 11, the membrane electrode 2 and the electrode plate 3 jointly form a sealing space 32, and the sealing piece 12 at the end part of the frame body 11 facing the membrane electrode 2 is positioned in the sealing space 32. The first direction is perpendicular to the second direction.
In this embodiment, the direction a in the drawing refers to a first direction, which may be a height direction of the galvanic pile unit. The direction b in the drawing refers to a second direction, and the second direction may be the length direction of the galvanic pile unit.
In the present embodiment, the seal 12 provided on the side portion of the frame body 11 can seal between the frame body 11 and the electrode plates 3, and the seal 12 provided on the end portion of the membrane electrode 2 can seal between the frame body 11, the membrane electrode 2, and the two electrode plates 3. Specifically, the sealing compound layer group of the sealing member 12 includes a first non-water-absorbing layer 121, a first water-absorbing layer 122 and a second non-water-absorbing layer 123 that are stacked in sequence, and a second water-absorbing layer 124 is disposed between two adjacent sealing compound layer groups. When the sealing member 12 is located in the sealing groove 31 and the sealing space 32, media such as humidified gas and deionized water are introduced, so that the first water-absorbing layer 122 and the second water-absorbing layer 124 absorb water and self-expand, and after expansion, the sealing member is tightly attached to the sealing groove 31 and the inner peripheral wall of the sealing space 32, thereby avoiding gaps and achieving a reliable and effective sealing effect. The requirements of the sealing element 12 on design deviation and tolerance are low, repeated matching and optimization of the size value of the sealing element 12 are not needed, the development period is effectively shortened, and the cost is saved.
In some alternative embodiments, only the sealing groove 31 is formed on the electrode plate 3 of the galvanic pile unit, and the sealing space 32 is not formed, in this case, the sealing piece 12 can be correspondingly formed on the side portion of the frame body 11, so that the gap can be sealed, and the sealing effect is satisfied.
In some alternative embodiments, the sealing groove 31 is not formed on the electrode plate 3 of the galvanic pile unit, and only the frame body 11, the membrane electrode 2 and the electrode plate 3 are formed with the sealing space 32, in this case, the sealing piece 12 can be correspondingly arranged only at the end part of the frame body 11 facing the membrane electrode 2, so that the gap can be sealed, and the sealing effect is satisfied.
Illustratively, the first and second water-absorbent layers 122, 124 are tailored based on resins having water-absorbent properties. The water absorbent resin component can be one or more of polyacrylic water absorbent resin, polyamide water absorbent resin, nano composite super absorbent resin, acrylamide copolymer, glycan water absorbent resin, polybutyl acrylate, acrylic acid graft copolymer, sodium acrylate resin, sodium polyacrylate resin and polystyrene resin. The non-water-absorbing resin component can be one or more of silicone rubber, ethylene propylene diene monomer rubber, polytetrafluoroethylene, polyacrylic acid, polysulfone, polyphenylene sulfide and polyether ether ketone. In the position with the sealing requirement, the mixed resin is coated in sequence in a lamination way or is coated with water-absorbing resin to prepare a film, and the proportion of the water-absorbing resin can be 5-95%.
In the present embodiment, one of the first non-absorbent layer 121 and the second non-absorbent layer 123 is configured as an L shape, the other is configured as a straight shape, the first non-absorbent layer 121 and the second non-absorbent layer 123 are spliced to form a receiving groove, and the first absorbent layer 122 is disposed in the receiving groove. The first non-water-absorbing layer 121 and the second non-water-absorbing layer 123 are disposed on two sides of the first water-absorbing layer 122 along the first direction, the first non-water-absorbing layer 121 and the second non-water-absorbing layer 123 are used for maintaining the basic shape of the sealing member, and the first water-absorbing layer 122 can realize water absorption self-expansion so as to realize expansion of the sealing compound layer group.
Illustratively, referring to fig. 2, the first non-water absorbent layer 121 is provided in an L-shape and the second non-water absorbent layer 123 is provided in a straight shape. Specifically, the first non-absorbent layer 121 includes a first layer portion 1211 and a second layer portion 1212 disposed at an angle, the first absorbent layer 122 is attached to the first layer portion 1211, and the second non-absorbent layer 123 is attached to both the second layer portion 1212 and the first absorbent layer 122. Specifically, the upper end surface of the second layer portion 1212 and the upper end surface of the first water-absorbent layer 122 together form a fitting end surface for contact with the second water-non-absorbent layer 123. When the first water-absorbing layer 122 is not absorbing water and self-expanding, the attaching end face is set to be a plane, that is, the upper end face of the second layer portion 1212 is flush with the upper end face of the first water-absorbing layer 122.
Specifically, the first layer portion 1211 is disposed to extend in the second direction, and the second layer portion 1212 is disposed to extend in the first direction.
Illustratively, referring to fig. 3, the first non-water absorbent layer 121 is shaped in a straight line, and the second non-water absorbent layer 123 is shaped in an L-shape. The second non-absorbent layer 123 includes a third layer portion 1231 and a fourth layer portion 1232 disposed at an angle, the first absorbent layer 122 is attached to the third layer portion 1231, and the first non-absorbent layer 121 is attached to the fourth layer portion 1232 and the first absorbent layer 122 at the same time. Specifically, the upper end surface of the fourth layer portion 1232 and the upper end surface of the first water-absorbent layer 122 together form a fitting end surface for contacting the first water-non-absorbent layer 121. When the first water-absorbing layer 122 is not self-expanding, the attaching end face is set to be a plane, i.e. the upper end face of the fourth layer portion 1232 is flush with the upper end face of the first water-absorbing layer 122.
Specifically, the third layer 1231 is disposed to extend in the second direction, and the fourth layer 1232 is disposed to extend in the first direction.
Specifically, the opening of the accommodating groove is arranged towards one side of the membrane electrode. The accommodating groove can face the gas diffusion layer in the membrane electrode 2, and mediums such as humidified gas, deionized water and the like reach the first water absorption layer 122 through the opening of the accommodating groove after passing through the gas diffusion layer, so that the water absorption self-expansion of the first water absorption layer 122 is more effectively ensured. Illustratively, the seal 12 is sized 0.02mm-2mm in the first direction and the seal 12 is sized 0.02mm-2mm in the second direction.
In some alternative embodiments, the frame body 11 may be made of the material of the sealing member 12, that is, the frame body 11 is formed by stacking a plurality of sealing compound layer groups, in which case, the frame body 11 and the sealing member 12 are integrally disposed. In this case, the dimension of the integral structure of the bezel body 11 and the seal 12 in the second direction is set to 1mm to 100mm.
Further, an insertion hole 111 for inserting the proton exchange membrane 23 of the membrane electrode 2 is formed in the side of the frame body 11 facing the membrane electrode 2. The insertion holes 111 are arranged so that the edges of the proton exchange membrane 23 extend into the frame body 11 on the corresponding side.
In this embodiment, as shown in fig. 4 to 5, the membrane electrode 2 includes a first gas diffusion layer 21, a first catalytic layer 22, a proton exchange membrane 23, a second catalytic layer 24, and a second gas diffusion layer 25 sequentially stacked along a first direction, and the first gas diffusion layer 21 and the second gas diffusion layer 25 are respectively attached to the electrode plates 3 on the corresponding sides. Specifically, the proton exchange membrane 23 is a core component of the membrane electrode 2, has a barrier function, and also has a proton conducting function. The gas diffusion layer may play an important role in supporting the catalytic layer, collecting electric current, conducting gas, and draining reaction product water in the galvanic pile cell. Humidified gas, deionized water, or the like may be introduced into the first and second water-absorbing layers 122 and 124 of the sealing member 12 through the gas diffusion layer to achieve self-expansion of the water-absorbing surfaces of the first and second water-absorbing layers 122 and 124.
In the present embodiment, along the first direction, the frame body 11 is disposed flush with the membrane electrode 2. So set up, can carry out more reliable effectual laminating to upper and lower polar plate 3, further guarantee the leakproofness.
Optionally, a plurality of sealing grooves 31 are arranged at intervals, and the sealing pieces 12 on the side part of the frame body 11 are provided with a plurality of sealing grooves and are arranged in one-to-one correspondence with the sealing grooves 31. The sealing pieces 12 are matched with the sealing grooves 31, so that gaps between the polar plates 3 and the sealing frame 1 can be further plugged, and the sealing effect is further enhanced.
The assembly process of the membrane electrode 2, the pole plate 3 and the sealing rim 1 of the electric push unit is described below as an example. Firstly, the membrane electrode 2 to be assembled needs to be prepared, then the upper polar plate 3 and the lower polar plate 3 are installed, and the membrane electrode 2 is clamped between the two polar plates 3. Subsequently, two sealing frames 1 are installed, when the sealing frames 1 are installed in place, the sealing elements 12 on the side parts of the frame body 11 are located in the sealing grooves 31, and the sealing elements 12 on the end parts of the frame body 11, facing the membrane electrodes 2, are located in the sealing spaces 32. After the membrane electrode 2, the pole plate 3 and the sealing frame 1 are installed, the self-expansion of the water absorption layer in the sealing element 12 is realized by introducing humidifying gas, deionized water and other mediums, and the sealing element 12 is tightly attached to the sealing groove 31 and the inner peripheral wall of the sealing space 32 after expansion, so that gaps are avoided, and a reliable and effective sealing effect is achieved. By designing the maximum water absorption expansion size of the film, the sealed self-assembly of the galvanic pile monomer is realized in a manner of meeting the stress design value of the galvanic pile. The sealing groove 31 and the sealing space 32 are filled after the water absorption layer in the sealing element 12 is expanded, so that the sealing function is realized. In addition, after the film absorbs water and expands, the edge position of the membrane electrode 2 plays a role of hydrogel, so that the sealing self-assembly of the galvanic pile monomer is realized, and the water management coupling optimization of the local area of the galvanic pile monomer can be realized due to the dynamic diffusion of the anode and the cathode of water at the edge position.
Illustratively, a method of preparing the seal is described below. First, a first non-water-absorbing layer 121 is required to be drawn out to form an L-shaped structure as a base film, and then a first water-absorbing layer 122 and a second non-water-absorbing layer 123 are sequentially drawn out from bottom to top on the base film to prepare a single-layer sealed composite layer group, and then a second water-absorbing layer 124 is drawn out above the sealed composite layer group. The first water absorbent layer 122 and the second water absorbent layer 123 are made of water absorbent resin, and the first non-water absorbent layer 121 and the second non-water absorbent layer 123 are made of non-water absorbent resin. After the second water-absorbing layer 124 is drawn, the overall structure of the sealed composite layer set is cured, thereby obtaining the sealing member 12 with the water thermal management capability in the middle.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1.一种密封边框，其特征在于，包括：1. A sealing frame, characterized by comprising: 边框本体(11)；Frame body (11); 密封件(12)，所述密封件(12)设置于所述边框本体(11)的侧部和/或所述边框本体(11)朝向膜电极的端部；其中，A sealing member (12), wherein the sealing member (12) is arranged on a side of the frame body (11) and/or an end of the frame body (11) facing the membrane electrode; wherein: 所述密封件(12)包括至少两个沿第一方向堆叠设置的密封复合层组，所述密封复合层组包括沿第一方向依次堆叠设置的第一非吸水层(121)、第一吸水层(122)以及第二非吸水层(123)，且相邻两个所述密封复合层组之间设有第二吸水层(124)。The sealing component (12) comprises at least two sealing composite layer groups stacked along a first direction, the sealing composite layer groups comprising a first non-water-absorbing layer (121), a first water-absorbing layer (122) and a second non-water-absorbing layer (123) stacked in sequence along the first direction, and a second water-absorbing layer (124) is provided between two adjacent sealing composite layer groups. 2.根据权利要求1所述的密封边框，其特征在于，所述第一非吸水层(121)与所述第二非吸水层(123)之中的一者设置为L型，另一者设置为一字型，所述第一非吸水层(121)与所述第二非吸水层(123)相拼合形成容置槽，所述第一吸水层(122)设置于所述容置槽内。2. The sealing frame according to claim 1 is characterized in that one of the first non-water-absorbing layer (121) and the second non-water-absorbing layer (123) is configured to be L-shaped, and the other is configured to be I-shaped, the first non-water-absorbing layer (121) and the second non-water-absorbing layer (123) are combined to form a receiving groove, and the first water-absorbing layer (122) is arranged in the receiving groove. 3.根据权利要求2所述的密封边框，其特征在于，所述第一非吸水层(121)包括呈角度设置的第一层部(1211)和第二层部(1212)，所述第一吸水层(122)贴合于所述第一层部(1211)上，所述第二非吸水层(123)同时贴合于所述第二层部(1212)和所述第一吸水层(122)上。3. The sealing frame according to claim 2 is characterized in that the first non-water-absorbing layer (121) includes a first layer portion (1211) and a second layer portion (1212) arranged at an angle, the first water-absorbing layer (122) is adhered to the first layer portion (1211), and the second non-water-absorbing layer (123) is adhered to the second layer portion (1212) and the first water-absorbing layer (122) at the same time. 4.根据权利要求2所述的密封边框，其特征在于，所述容置槽的开口朝向所述膜电极的一侧设置。4 . The sealing frame according to claim 2 , wherein an opening of the accommodating groove is arranged toward a side of the membrane electrode. 5.根据权利要求1所述的密封边框，其特征在于，所述边框本体(11)朝向膜电极的一侧开设有用于所述膜电极的质子交换膜插入的插孔(111)。5. The sealing frame according to claim 1, characterized in that a plug hole (111) for inserting the proton exchange membrane of the membrane electrode is provided on a side of the frame body (11) facing the membrane electrode. 6.根据权利要求1所述的密封边框，其特征在于，所述密封件(12)与所述边框本体(11)胶粘连接。6. The sealing frame according to claim 1, characterized in that the sealing member (12) is adhesively connected to the frame body (11). 7.一种电堆单体，其特征在于，包括如权利要求1-6任一项所述的密封边框(1)，还包括：7. A battery stack cell, characterized in that it comprises the sealing frame (1) according to any one of claims 1 to 6, and further comprises: 膜电极(2)；Membrane electrode (2); 极板(3)，沿第一方向成对间隔设置，所述膜电极(2)与所述密封边框(1)分别夹设于两块所述极板(3)之间；The electrode plates (3) are arranged in pairs at intervals along a first direction, and the membrane electrode (2) and the sealing frame (1) are respectively sandwiched between two of the electrode plates (3); 所述密封边框(1)沿第二方向成对间隔设置，所述膜电极(2)位于两个所述密封边框(1)之间；The sealing frames (1) are arranged in pairs at intervals along the second direction, and the membrane electrode (2) is located between two of the sealing frames (1); 所述极板(3)开设有密封槽(31)，所述边框本体(11)侧部的所述密封件(12)位于所述密封槽(31)内，和/或所述边框本体(11)、所述膜电极(2)以及所述极板(3)共同形成密封空间(32)，所述边框本体(11)朝向所述膜电极(2)端部的所述密封件(12)位于所述密封空间(32)内；The electrode plate (3) is provided with a sealing groove (31), the sealing member (12) on the side of the frame body (11) is located in the sealing groove (31), and/or the frame body (11), the membrane electrode (2) and the electrode plate (3) together form a sealed space (32), and the sealing member (12) at the end of the frame body (11) facing the membrane electrode (2) is located in the sealed space (32); 所述第一方向垂直于所述第二方向。The first direction is perpendicular to the second direction. 8.根据权利要求7所述的电堆单体，其特征在于，所述膜电极(2)包括沿第一方向依次叠层设置的第一气体扩散层(21)、第一催化层(22)、质子交换膜(23)、第二催化层(24)以及第二气体扩散层(25)，所述第一气体扩散层(21)与所述第二气体扩散层(25)分别贴设于对应侧的所述极板(3)上。8. The fuel cell stack according to claim 7 is characterized in that the membrane electrode (2) comprises a first gas diffusion layer (21), a first catalytic layer (22), a proton exchange membrane (23), a second catalytic layer (24) and a second gas diffusion layer (25) which are stacked in sequence along a first direction, and the first gas diffusion layer (21) and the second gas diffusion layer (25) are respectively attached to the electrode plate (3) on the corresponding side. 9.根据权利要求7所述的电堆单体，其特征在于，沿第一方向，所述边框本体(11)与所述膜电极(2)平齐设置。9. The battery stack cell according to claim 7, characterized in that, along the first direction, the frame body (11) is arranged flush with the membrane electrode (2). 10.根据权利要求7所述的电堆单体，其特征在于，所述密封槽(31)的数量间隔设置有多个，所述边框本体(11)侧部的所述密封件(12)设有多个并与所述密封槽(31)一一对应设置。10. The battery stack cell according to claim 7, characterized in that a plurality of the sealing grooves (31) are arranged at intervals, and a plurality of the sealing members (12) on the side of the frame body (11) are arranged one-to-one corresponding to the sealing grooves (31).
CN202421940385.5U 2024-08-12 2024-08-12 Sealing frame and galvanic pile monomer Active CN222995439U (en)

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