Stack module

Abstract

This invention belongs to the field of hydrogen proton exchange membrane fuel cell technology and discloses a fuel cell stack module, including a stack housing, a power generation unit, and a support unit. The stack housing includes a receiving shell, a top cover, and a side cover. The top cover is detachably sealed to the top opening of the receiving shell, and the side cover is connected to the side opening of the receiving shell. The receiving shell, the top cover, and the side cover enclose a receiving space. The power generation unit is installed in the receiving space, located at the bottom of the receiving shell, and sandwiched between the side cover and a part of the receiving shell. The top cover presses against the power generation unit. The support unit is sandwiched between the stack housing and the power generation unit. This fuel cell stack module has high integration, is easy to assemble, and has strong stability.

Description

Technical Field

[0001] This invention relates to the field of hydrogen proton exchange membrane fuel cell technology, and more particularly to a fuel cell stack module. Background Technology

[0002] Hydrogen energy, as a green energy source, can be applied in the transportation, aerospace, and public utilities sectors. Proton exchange membrane fuel cells (PEMFCs) are an important part of hydrogen energy utilization. Due to their outstanding characteristics such as high energy conversion efficiency, pollution-free and noiseless operation, and excellent low-temperature performance, PEMFCs are suitable as vehicle power sources to address the problem of excessive carbon emissions in the transportation sector.

[0003] A proton exchange membrane fuel cell (PEMFC) typically consists of an air system, a hydrogen system, a cooling system, and a fuel cell stack. Currently, PEMFCs face several challenges. First, their volumetric power density is significantly lower than that of traditional internal combustion engines, resulting in a larger vehicle footprint and hindering installation. Second, their durability is limited, and their operating range does not meet current usage requirements. Third, their high cost contributes to high initial vehicle installation costs. The fuel cell stack, the core component of the PEMFC, accounts for approximately half of the total cost. As the source of power output, it directly determines the durability of the fuel cell system and also dictates the fuel cell's size. Therefore, there is a need to develop fuel cell stacks with more compact structures, smaller sizes, and suitability for mass production and assembly, thereby reducing costs.

[0004] Therefore, there is an urgent need for a fuel cell stack module to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a fuel cell stack module that has high integration, is easy to assemble, and can ensure the stability of the fuel cell stack module.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A fuel cell stack module includes a stack housing, a power generation unit, and a support unit. The stack housing includes a receiving shell, a top cover, and a side cover. The top cover is detachably sealed to the top opening of the receiving shell, and the side cover is connected to the side opening of the receiving shell. The receiving shell, the top cover, and the side cover enclose a receiving space. The power generation unit is installed in the receiving space, located at the bottom of the receiving shell, and sandwiched between the side cover and a part of the receiving shell. The top cover presses against the power generation unit. The support unit is sandwiched between the stack housing and the power generation unit.

[0008] As a preferred embodiment of the fuel cell stack module provided by the present invention, the bottom of the housing is a base plate, and a first groove and a second groove are formed along the length direction of the base plate. The first groove and the second groove are arranged parallel to each other and spaced apart in the width direction of the base plate.

[0009] The support unit includes a first support member and a second support member, which are arranged parallel to each other and spaced apart. They are respectively connected to the bottom of the power generation unit and respectively fitted into the first groove and the second groove.

[0010] As a preferred embodiment of the fuel cell stack module provided by the present invention, the side of the housing facing the side opening is a first side plate, and the side cover faces the first side plate.

[0011] The support unit also includes an elastic component sandwiched between the first side plate and one side of the power generation unit.

[0012] As a preferred embodiment of the fuel cell stack module provided by the present invention, the elastic component includes an elastic element, a connecting plate, and a fixing plate. The connecting plate is connected to one side of the power generation unit, the fixing plate is installed on the first side plate, and the elastic element is sandwiched between the connecting plate and the fixing plate, and can be compressed along the length direction of the fuel cell stack shell.

[0013] As a preferred embodiment of the fuel cell stack module provided by the present invention, the fixing plate has a first positioning groove, a guide post is fixedly connected to the center of the first positioning groove, the connecting plate has a second positioning groove, the elastic element is snapped into the first positioning groove and the second positioning groove, and the guide post passes through the elastic element along the compression direction of the elastic element.

[0014] As a preferred embodiment of the fuel cell stack module provided by the present invention, two positioning bolts are fixedly connected to the first side plate, and the two positioning bolts are arranged in a centrally symmetrical manner with respect to the geometric center of the first side plate; two positioning holes are opened on the fixing plate, and the two positioning holes are arranged in a centrally symmetrical manner with respect to the geometric center of the fixing plate, and the two positioning bolts are respectively inserted into the two positioning holes.

[0015] As a preferred embodiment of the fuel cell stack module provided by the present invention, the power generation unit includes a power generation body, a first conductive structure and a second conductive structure, wherein the first conductive structure and the second conductive structure are respectively connected to the two ends of the power generation body;

[0016] The side cover has a first embedding groove, and the first conductive structure is embedded in the first embedding groove. The connecting plate has a second embedding groove on the side opposite to the elastic element, and the second conductive structure is embedded in the second embedding groove.

[0017] As a preferred embodiment of the fuel cell stack module provided by the present invention, the fixing plate is made of metal material, and the first support member, the second support member and the connecting plate are made of plastic.

[0018] As a preferred embodiment of the fuel cell stack module provided by the present invention, the housing further includes a second side plate and a third side plate, the second side plate and the third side plate being arranged parallel to each other and fixedly connected to the bottom plate, the first side plate being clamped and fixedly connected to the second side plate and the third side plate, and the ends of the second side plate and the third side plate away from the first side plate being connected to a reinforcing beam, the reinforcing beam, the end edge of the second side plate, the end edge of the third side plate and the end edge of the bottom plate forming a side opening of the housing.

[0019] As a preferred embodiment of the fuel cell stack module provided by the present invention, the side cover is provided with a boss structure, and the boss structure is snapped into the side opening of the housing.

[0020] As a preferred embodiment of the fuel cell stack module provided by the present invention, the side cover has a sealing groove, a sealing strip is embedded in the sealing groove, and the sealing strip is sandwiched between the bottom of the sealing groove and the periphery of the side opening of the housing.

[0021] As a preferred embodiment of the fuel cell stack module provided by the present invention, the connection between the housing and the top cover is sealed by applying sealant.

[0022] As a preferred embodiment of the fuel cell stack module provided by the present invention, the housing and the top cover are made of metal, and the side cover is made of plastic.

[0023] The beneficial effects of this invention are:

[0024] The fuel cell stack module provided by this invention includes a fuel cell stack housing, a power generation unit, and a support unit. The fuel cell stack housing includes a receiving shell, a top cover, and a side cover. The top cover is detachably sealed to the top opening of the receiving shell, and the side cover is connected to a side opening of the receiving shell. The receiving shell, the top cover, and the side cover enclose a receiving space. In other words, the receiving shell provides installation space for the power generation unit. The power generation unit is installed in the receiving space, located at the bottom of the receiving shell, and sandwiched between the side cover and a portion of the receiving shell. The top cover presses against the power generation unit. That is, the side cover reinforces the installation of the power generation unit in the receiving shell, and the detachable top cover sews onto the top opening of the receiving shell, facilitating disassembly and maintenance of the power generation unit. The support unit, sandwiched between the fuel cell stack housing and the power generation unit, improves the stability of the power generation unit. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the structure of the fuel cell stack module provided in an embodiment of the present invention;

[0026] Figure 2 The explosion of the fuel cell stack module provided in the embodiment of the present invention. Figure 1 ;

[0027] Figure 3 The explosion of the fuel cell stack module provided in the embodiment of the present invention. Figure 2 ;

[0028] Figure 4 The explosion of the fuel cell stack module provided in the embodiment of the present invention. Figure 3 .

[0029] In the picture:

[0030] 100. Fuel cell stack housing; 110. Top cover; 120. Side cover; 121. First recessed groove; 122. Boss structure; 130. Base plate; 131. First groove; 132. Second groove; 133. First connecting boss; 140. First side plate; 141. Positioning bolt; 142. Accommodating groove; 143. Second connecting boss; 150. Second side plate; 160. Third side plate; 170. Reinforcing beam;

[0031] 200, power generation unit; 210, power generation element; 220, first conductive structure; 230, second conductive structure;

[0032] 300, Support unit; 310, First support member; 320, Second support member; 330, Elastic component; 331, Elastic element; 332, Connecting plate; 333, Fixing plate; 333a, First positioning groove; 333b, Guide post; 333c, Positioning hole. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] Figure 1 This diagram illustrates the structure of the fuel cell stack module provided in an embodiment of the present invention. Figure 2 An explosion of a fuel cell stack module provided in an embodiment of the present invention is shown. Figure 1 ; Figure 3 An explosion of a fuel cell stack module provided in an embodiment of the present invention is shown. Figure 2 ; Figure 4 An explosion of a fuel cell stack module provided in an embodiment of the present invention is shown. Figure 3 . Reference Figures 1-4 This embodiment provides a fuel cell stack module. The fuel cell stack module includes a fuel cell stack housing 100, a power generation unit 200, and a support unit 300.

[0039] Specifically, the fuel cell stack housing 100 includes a receiving housing, a top cover 110, and a side cover 120. The top cover 110 is detachably sealed to the top opening of the receiving housing, and the side cover 120 is connected to the side opening of the receiving housing. The receiving housing, the top cover 110, and the side cover 120 enclose a receiving space. The power generation unit 200 is installed in the receiving space, located at the bottom of the receiving housing, and sandwiched between the side cover 120 and a portion of the receiving housing. The top cover 110 presses against the power generation unit 200. The support unit 300 is sandwiched between the fuel cell stack housing 100 and the power generation unit 200. The receiving housing provides installation space for the power generation unit 300. The side cover 110 provides reinforcement for the installation of the power generation unit 200 in the receiving housing, and the top cover 110 is detachably sealed to the top opening of the receiving housing for easy disassembly and maintenance of the power generation unit 200. The support unit 300 can improve the stability of the power generation unit 200 installation and ensure the stability of the fuel cell stack module.

[0040] Reference Figures 2-4 The housing has a bottom plate 130 and includes a second side plate 150 and a third side plate 160. The second side plate 150 and the third side plate 160 are parallel to each other and spaced apart, respectively vertically fixed to opposite sides of the bottom plate 130. A first side plate 140 is vertically fixed to the end of the bottom plate 130. The first side plate 140 is vertically sandwiched between the second side plate 150 and the third side plate 160. A reinforcing beam 170 is connected to the ends of the second side plate 150 and the third side plate 160 away from the first side plate 140. The reinforcing beam 170, the end edge of the second side plate 150, the end edge of the third side plate 160, and the end edge of the bottom plate 130 form a side opening of the housing. This side opening is directly opposite the first side plate 140. The above-described configuration forms a stable housing, which can minimize warping and deformation, and facilitates the connection between the housing and the top cover 110 and the side cover 120.

[0041] Continue to refer to Figures 2-4 The power generation unit 200 includes a power generator 210, a first conductive structure 220, and a second conductive structure 230, which are respectively installed at both ends of the power generator 210. The power generator 210 is composed of hundreds of membrane electrodes and bipolar plates, etc., which is prior art and will not be described in detail here.

[0042] Continue to refer to Figures 2-4The support unit 300 includes a first support member 310, a second support member 320, and an elastic component 330. The first support member 310 and the second support member 320 are arranged parallel to each other and spaced apart, respectively connected to the bottom of the generator 210, and can be snapped onto the base plate 130. The elastic component 330 is sandwiched between the first side plate 140 and the second conductive structure 230. The first support member 310 and the second support member 320 provide support for the generator unit 200. The elastic component 330 can ensure that the position of the generator unit 200 can be finely adjusted during assembly through the principle of elastic deformation, and can always ensure the reliability of the installation of the generator unit 200 when the length changes due to thermal expansion and contraction during use.

[0043] Specifically, such as Figure 3 As shown, a first groove 131 and a second groove 132 are formed along the length of the upper side of the base plate 130. The first groove 131 and the second groove 132 are arranged parallel to each other and spaced apart in the width direction of the base plate 130. The support unit 300 includes a first support member 310 and a second support member 320. The first support member 310 and the second support member 320 are arranged parallel to each other and spaced apart. They are respectively connected to the bottom of the generator 210 and respectively snapped into the first groove 131 and the second groove 132. The bottom of the generator unit 200 is provided with two mounting bosses. The first support member 310 and the second support member 320 are respectively formed with a first mounting groove and a second mounting groove along their length direction. The first mounting groove and the second mounting groove correspond to the two mounting bosses. The two mounting bosses are respectively snapped into the first mounting groove and the second mounting groove, realizing the reliable installation of the first support member 310 and the second support member 320 with the generator 210.

[0044] More specifically, in this embodiment, the cross-sectional shape of the first mounting groove perpendicular to its length direction is rectangular or trapezoidal; similarly, the cross-sectional shape of the second mounting groove perpendicular to its length direction is rectangular or trapezoidal. The cross-sectional shapes of the two mounting bosses at the bottom of the power generation unit 200 perpendicular to its length direction correspond to the first mounting groove and the second mounting groove, respectively. The length of the first mounting groove is the same as the length of one of the mounting bosses; the length of the second mounting groove is the same as the length of the other mounting boss. The first support member 310 and the second support member 320 serve a positioning function, that is, during the assembly of the fuel cell module, they can act as positioning guides for the power generation unit 210, guiding the power generation unit 210 to be installed in place with the base plate 130.

[0045] Reference Figure 3 and Figure 4The elastic component 330 includes an elastic element 331, a connecting plate 332, and a fixing plate 333. The connecting plate 332 is connected to one side of the power generation unit 200, and the fixing plate 333 is installed on the first side plate 140. The elastic element 331 is sandwiched between the connecting plate 332 and the fixing plate 333 and can be compressed along the length of the fuel cell stack housing 100. With this configuration, when the power generation unit 200 experiences thermal expansion and contraction during use, causing length changes, the elastic element 331 has a certain compression and extension margin, ensuring the stability of the power generation unit 200 installation. In this embodiment, the elastic element 331 can be a spring from the prior art. The force on the elastic element 331 is precisely calculated, and by optimizing the stacking method, the overall length of the fuel cell stack module is reduced while increasing the power density.

[0046] Specifically, the fixing plate 333 has a first positioning groove 333a, and a guide post 333b is fixedly connected to the center of the first positioning groove 333a. The connecting plate 332 has a second positioning groove. The elastic element 331 is fitted into the first positioning groove 333a and the second positioning groove. The guide post 333b passes through the elastic element 331 along the compression direction of the elastic element 331. Through the above arrangement, the elastic element 331 can be stably clamped between the power generation unit 200 and the first side plate 140, preventing it from falling off and ensuring the fine-tuning function of the elastic element 331.

[0047] More specifically, the elastic component 330 in this embodiment includes three elastic elements 331, which are spaced apart along the length of the fixing plate 333. Correspondingly, the fixing plate 333 has three first positioning grooves 333a along its length, and a guide post 333b is fixedly connected to the center of each first positioning groove 333a. Similarly, the connecting plate 332 has three second positioning grooves along its length, and each second positioning groove corresponds to one first positioning groove 333a. The three elastic elements 331 are respectively installed in the three sets of first positioning grooves 333a and second positioning grooves through the above connection method. Through the above arrangement, the uniformity of the elastic force on the power generation unit 200 can be improved, and the uniformity of position adjustment can be improved when its length changes due to thermal expansion and contraction.

[0048] To be more specific, refer to Figure 4A boss structure 122 is provided on the side of the side cover 120 facing the power generation unit 200. The boss structure 122 can be snapped into the side opening of the housing to realize the installation of the side cover 120 and the housing. The side cover 120 has a first embedding groove 121. When the boss structure 122 can be snapped into the side opening of the housing, the first conductive structure 220 can be embedded in the first embedding groove 121. The connecting plate 332 has a second embedding groove on the side away from the elastic element 331, and the second conductive structure 230 is embedded in the second embedding groove.

[0049] More specifically, refer to Figure 3 and Figure 4 Two positioning bolts 141 are fixedly connected to the first side plate 140, and the two positioning bolts 141 are arranged symmetrically about the geometric center of the first side plate 140. Two positioning holes 333c are provided on the fixing plate 333, and the two positioning holes 333c are arranged symmetrically about the geometric center of the fixing plate 333. The two positioning bolts 141 are respectively inserted into the two positioning holes 333c. The insertion of the positioning bolts 141 into the positioning holes 333c facilitates the positioning and alignment of the fixing plate 333 and the first side plate 140, ensuring installation quality.

[0050] As a preferred option, refer to Figure 3 To improve the structural consistency and installation stability of the fixed plate 333 and the first side plate 140 after connection, a receiving groove 142 is provided on the side of the first side plate 140 facing the fixed plate 333. Two positioning bolts 141 are fixed to the bottom of the receiving groove 142, and the fixed plate 333 can be stably embedded in the receiving groove 142.

[0051] To achieve a seal between the side cover 120 and the housing, and between the top cover 110 and the housing, a sealing groove is provided in the side cover 120. A sealing strip is embedded in the sealing groove, and the sealing strip is sandwiched between the bottom of the sealing groove and the periphery of the side opening of the housing. The connection between the housing and the top cover 110 is sealed by applying sealant, which cures at room temperature. After the sealant cures, a seal is achieved between the top cover 110 and the housing.

[0052] Preferably, a drainage hole is provided in the geometric center region of the base plate 130 for drainage. A plurality of first connecting bosses 133 are fixed to the side of the base plate 130 away from the power generation unit 200. The plurality of first connecting bosses 133 are arranged in a rectangular array for connecting with external structures or as fixing points during the assembly of fuel cell stack modules.

[0053] Similarly, two second connecting bosses 143 are fixedly connected to the side of the first side plate 140 opposite to the fixing plate 333, and the two second connecting bosses 143 are spaced apart along the length of the first side plate 140. These second connecting bosses 143 can also be used for external structural connections or as fixing points during fuel cell module assembly. By providing the first connecting bosses 133 and the second connecting bosses 143, it is convenient to connect the fuel cell module to other components, which helps to improve the integration of the fuel cell.

[0054] In this embodiment, the fixing plate 333 is made of metal, while the first support member 310, the second support member 320, and the connecting plate 332 are made of plastic. The housing and the top cover 110 are made of metal, and the side cover 120 is made of plastic. The metal material can be selected from existing materials such as aluminum alloy and magnesium alloy; the plastic can be selected from existing high-strength engineering plastics such as phenolic resin, polyamide, polyphenylene ether, polypropylene, or polycarbonate.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A fuel cell stack module, characterized in that, include: The fuel cell stack housing (100) includes a housing, a top cover (110), and a side cover (120). The top cover (110) is detachably sealed to the top opening of the housing, and the side cover (120) is connected to the side opening of the housing. The housing, the top cover (110), and the side cover (120) together form a housing space. A power generation unit (200) is installed in the accommodating space, located at the bottom of the accommodating housing, sandwiched between the side cover (120) and a portion of the accommodating housing, and the top cover (110) presses against the power generation unit (200). A support unit (300) is sandwiched between the fuel cell stack housing (100) and the power generation unit (200); The bottom of the housing is a base plate (130), and a first groove (131) and a second groove (132) are formed along the length of the base plate (130). The first groove (131) and the second groove (132) are arranged parallel to each other and spaced apart in the width direction of the base plate (130). The support unit (300) includes a first support member (310) and a second support member (320). The first support member (310) and the second support member (320) are arranged parallel to each other and are respectively connected to the bottom of the power generation unit (200) and respectively snapped into the first groove (131) and the second groove (132). The side of the housing that faces the side opening is the first side plate (140), and the side cover (120) is opposite the first side plate (140). The support unit (300) further includes an elastic component (330) sandwiched between the first side plate (140) and one side of the power generation unit (200); The elastic component (330) includes an elastic element (331), a connecting plate (332), and a fixing plate (333). The connecting plate (332) is connected to one side of the power generation unit (200), and the fixing plate (333) is installed on the first side plate (140). The elastic element (331) is sandwiched between the connecting plate (332) and the fixing plate (333) and can be compressed along the length direction of the stack housing (100). The power generation unit (200) includes a power generation body (210), a first conductive structure (220), and a second conductive structure (230), wherein the first conductive structure (220) and the second conductive structure (230) are respectively connected to the two ends of the power generation body (210); The side cover (120) has a first embedding groove (121), and the first conductive structure (220) is embedded in the first embedding groove (121). The connecting plate (332) has a second embedding groove on the side away from the elastic element (331), and the second conductive structure (230) is embedded in the second embedding groove. The first side plate (140) has a receiving groove (142) on the side facing the fixing plate (333). Two positioning bolts (141) are fixedly connected to the first side plate (140), and the two positioning bolts (141) are arranged in a centrally symmetrical manner with respect to the geometric center of the first side plate (140); two positioning holes (333c) are opened on the fixing plate (333), and the two positioning holes (333c) are arranged in a centrally symmetrical manner with respect to the geometric center of the fixing plate (333), and the two positioning bolts (141) are respectively inserted into the two positioning holes (333c).

2. The fuel cell stack module according to claim 1, characterized in that, The fixing plate (333) has a first positioning groove (333a), and a guide post (333b) is fixedly connected to the center of the first positioning groove (333a). The connecting plate (332) has a second positioning groove. The elastic element (331) is fitted into the first positioning groove (333a) and the second positioning groove. The guide post (333b) passes through the elastic element (331) along the compression direction of the elastic element (331).

3. The fuel cell stack module according to claim 1, characterized in that, The fixing plate (333) is made of metal, and the first support (310), the second support (320) and the connecting plate (332) are made of plastic.

4. The fuel cell stack module according to claim 1, characterized in that, The housing further includes a second side plate (150) and a third side plate (160), the second side plate (150) and the third side plate (160) are arranged parallel to each other and fixed to the bottom plate (130), the first side plate (140) is sandwiched and fixed between the second side plate (150) and the third side plate (160), and the ends of the second side plate (150) and the third side plate (160) away from the first side plate (140) are connected to a reinforcing beam (170), the reinforcing beam (170), the end edge of the second side plate (150), the end edge of the third side plate (160) and the end edge of the bottom plate (130) form the side opening of the housing.

5. The fuel cell stack module according to claim 4, characterized in that, The side cover (120) is provided with a boss structure (122), which is fitted into the side opening of the housing.

6. The fuel cell stack module according to any one of claims 1-5, characterized in that, The side cover (120) has a sealing groove, and a sealing strip is embedded in the sealing groove. The sealing strip is sandwiched between the bottom of the sealing groove and the periphery of the side opening of the housing.

7. The fuel cell stack module according to any one of claims 1-5, characterized in that, The connection between the housing and the top cover (110) is sealed by applying sealant.

8. The fuel cell stack module according to any one of claims 1-5, characterized in that, The housing and the top cover (110) are made of metal, and the side cover (120) is made of plastic.

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