An integrated housing package stack structure

Abstract

The utility model discloses an integrated shell package electric pile structure, include: electric pile front end board, electric pile rear end board, main casing, electric pile core and spacing rod, the main casing is integrated structure, its front end is fixedly connected with electric pile front end board, rear end is tightly connected with electric pile rear end board, the electric pile rear end board center area evenly distributed has a plurality of end plate adjusting top silk, end plate adjusting top silk is cooperated with the threaded hole on electric pile rear end board, is used for adjusting the assembly tolerance and sealing rubber strip relaxation compensation of electric pile core, through the integrated structure of main casing and the close cooperation of front and rear end board, combine the spacing rod that distributes in the inside of main casing upper, left and right four directions, make the bipolar plate of electric pile core and membrane electrode even stress in the packaging process, avoided the problem of sealing failure and poor performance consistency, significantly improved the assembly accuracy and long -term operation stability of electric pile.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, and in particular to an integrated shell-encapsulated fuel cell stack structure. Background Technology

[0002] A hydrogen fuel cell is a device that converts hydrogen energy into electricity through an electrochemical reaction, using hydrogen as fuel. Traditional fuel cell stacks are typically assembled into a bare stack first. After press-fitting, the bare stack is secured using three main methods: screws, steel belts, or tie rods. Then, a shell is fitted over the bare stack to fix it in place, forming the most common fuel cell stack structure on the market.

[0003] However, the three common fixing methods of traditional bare fuel cell stacks—screws, steel strips, or tie rods—are often suitable for small-power fuel cell stacks with small bipolar plate sizes and a small number of stack sections. For large-power fuel cell stacks with larger bipolar plate sizes and a large number of stack sections, the locking method of screws, steel strips, or tie rods will cause uneven stress, especially in the middle area, where the uneven stress is particularly obvious. This leads to problems such as poor stack consistency and sealing failure. At the same time, this locking method has too low volumetric power density, which easily leads to wasted space and increased costs. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and provides an integrated shell-encapsulated fuel cell stack structure.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an integrated shell-encapsulated fuel cell stack structure, comprising: a front end plate of the fuel cell stack, a rear end plate of the fuel cell stack, a main shell, a fuel cell stack core, and a limiting rod;

[0006] The main housing is an integral structure, with its front end fixedly connected to the front end plate of the fuel cell stack and its rear end fastened to the rear end plate of the fuel cell stack.

[0007] The limiting rod includes: a first upper limiting rod and a second upper limiting rod distributed on the upper end face inside the main housing, a first lower limiting rod and a second lower limiting rod distributed on the lower end face inside the main housing, a left limiting rod disposed on the left side inside the main housing, and a right limiting rod disposed on the right side inside the main housing.

[0008] The limiting rod is fixed to the inner wall of the main housing by a limiting rod fixing bolt passing through the bolt hole on the housing side and engaging with the bolt hole on the limiting rod side; a gap is reserved between the inner surface of the limiting rod and the fuel cell core; the limiting rod is provided with limiting rod positioning pin holes at both ends, and the limiting rod positioning pins are engaged with the positioning pin holes on the housing side for positioning;

[0009] Several end plate adjusting screws are evenly distributed in the central area of ​​the rear end plate of the fuel cell stack. The end plate adjusting screws cooperate with the threaded holes on the rear end plate of the fuel cell stack to adjust the assembly tolerance of the fuel cell stack core and compensate for the loosening of the sealing strip.

[0010] In a preferred embodiment of this utility model, the electrode stack core is disposed inside the main housing and is composed of bipolar plates and membrane electrodes stacked alternately; the gap is determined by comprehensive calculation based on machining tolerances, assembly tolerances and tooling position tolerances.

[0011] In a preferred embodiment of this utility model, the front end plate of the fuel cell stack is sequentially connected to the front insulation plate and the front current collector of the fuel cell stack, and a composite end plate is formed by an integrated injection molding process. The composite end plate is made of an aluminum substrate coated with a polymer insulating material.

[0012] In a preferred embodiment of the present invention, a dummy battery is provided at the front end of the fuel cell stack core. The dummy battery is composed of a metal plate that is not connected to an air field but only to a water field and a dummy membrane electrode, and is installed adjacent to the front current collector of the fuel cell stack.

[0013] In a preferred embodiment of this utility model, an insulating plate is attached to the inner surface of the limiting rod. The insulating plate is an epoxy resin plate or a PPS plate, and is connected to the limiting rod by adhesive bonding or mechanical fixing.

[0014] In a preferred embodiment of this utility model, a CVM housing cover plate is provided on the top of the main housing, and a CVM controller is installed on the CVM housing cover plate; a housing top cover is installed on one side of the main housing, and a maintenance cover and a direct-connect copper busbar are provided on the top of the housing top cover; a hydrogen venting safety valve and a fuel cell stack purging port are provided on the side wall of the main housing.

[0015] In a preferred embodiment of this utility model, a rear current collector plate, a rear insulation plate, a disc spring pressure plate, a disc spring assembly, and an adjustment plate are sequentially provided between the rear end plate of the fuel cell stack and the main housing. The disc spring assembly is assembled and pre-tightened through the fuel cell stack press-fit holes.

[0016] In a preferred embodiment of this utility model, the adjusting screw of the limiting rod passes through the threaded hole of the adjusting screw on the housing side and cooperates with the limiting screw limiting hole on the limiting rod side. The gap between the limiting rod and the fuel cell core is controlled by the screwing depth of the adjusting screw.

[0017] In a preferred embodiment of this utility model, a lifting ring is provided on the outer surface of the main housing, and the lifting ring is fixed to the top of the main housing by welding or bolting.

[0018] In a preferred embodiment of this utility model, the limiting rod is provided with a limiting rod positioning hole in the installation direction to ensure that the bottom end face of the tooling fits with the top end face of the limiting rod to avoid misalignment.

[0019] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0020] (1) This utility model provides an integrated shell-encapsulated fuel cell stack structure. Through the integrated structure of the main shell and the tight fit of the front and rear end plates, combined with the limiting rods distributed in the upper, lower, left and right directions inside the main shell, the problem of uneven force distribution caused by the point force distribution of traditional fuel cell stacks such as screws or steel strips is solved. Each limiting rod is fixed by the limiting rod fixing bolts and the bolt holes on the shell side and the bolt holes on the limiting rod side. The limiting rod positioning pins and the positioning pin holes on the shell side are used for precise positioning. At the same time, a gap is reserved to accommodate the processing and assembly tolerances, so that the bipolar plates and membrane electrodes of the fuel cell stack core are subjected to uniform force during the encapsulation process, avoiding the problems of sealing failure and poor performance consistency, and significantly improving the assembly accuracy and long-term operation stability of the fuel cell stack.

[0021] (2) In this utility model, by setting multiple end plate adjustment screws in the central area of ​​the rear end plate and cooperating with the disc spring pressure plate, disc spring assembly and adjustment plate, the problem of gap accumulation caused by stress relaxation of sealing strip or manufacturing tolerance in traditional fuel cell stacks is solved. The end plate adjustment screws dynamically compensate for gap changes by screwing in depth. Combined with the limit rod adjustment screws to finely adjust the gap between the limit rod and the core, the sealing performance of the fuel cell stack is adaptively maintained during long-term operation. This not only simplifies the assembly process, but also reduces the external connection structure and improves the space utilization rate by integrating auxiliary components such as hydrogen exhaust safety valve and fuel cell purge port on the main shell. Thus, the fuel cell stack reduces the overall manufacturing cost and maintenance complexity while ensuring high volume power density. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is an exploded view of the integrated shell-encapsulated fuel cell stack structure of a preferred embodiment of the present invention;

[0024] Figure 2 This is a front three-dimensional structural diagram of the integrated shell-encapsulated fuel cell stack structure of a preferred embodiment of the present invention;

[0025] Figure 3 This is a rear three-dimensional structural diagram of the integrated shell-encapsulated fuel cell stack structure according to a preferred embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal limiting mechanism of the integrated shell-encapsulated fuel cell stack structure according to a preferred embodiment of the present invention;

[0027] Figure 5This is an internal limiting sectional view of the integrated shell-encapsulated fuel cell stack structure of a preferred embodiment of this utility model;

[0028] Figure 6 This is a partially enlarged schematic diagram of the internal limiting mechanism of the integrated shell-encapsulated fuel cell stack structure according to a preferred embodiment of this utility model;

[0029] Figure 7 This is a schematic diagram of the integrated shell-encapsulated fuel cell stack structure press-fitting according to a preferred embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the limiting rod structure of a preferred embodiment of the present invention;

[0031] In the diagram: 100. Front end plate of the fuel cell stack; 101. Front insulation plate of the fuel cell stack; 102. Front current collector plate of the fuel cell stack; 103. Dummy battery; 104. Top cover of the housing; 105. Inspection cover; 106. Direct connection copper busbar; 107. CVM housing cover plate; 108. CVM controller; 109. Main housing; 110. First upper limit rod; 111. Second upper limit rod; 112. Left limit rod; 113. Right limit rod; 114. Limit rod adjusting screw; 115. Limit rod fixing bolt; 116. Limit rod positioning pin; 117. Lifting ring; 118. Rear current collector plate of the fuel cell stack; 119. Rear insulation plate of the fuel cell stack; 120. Disc spring of the fuel cell stack Plate; 121, Disc spring assembly; 122, Adjusting plate; 123, Rear end plate of fuel cell stack; 123a, Fuel cell stack press-fit hole; 124, Hydrogen venting safety valve; 125, Fuel cell stack core; 126, End plate adjusting top screw; 127, Fuel cell stack purge port; 130, First lower end limit rod; 131, Second lower end limit rod; 140, Limit rod positioning hole; 200, Inner surface of limit rod; 400, Limit rod positioning pin hole; 401, Housing side positioning pin hole; 402, Limit rod side bolt hole; 403, Housing side bolt hole; 404, Limit rod side top screw limit hole; 405, Housing side top screw threaded hole; 410, Clearance; 1000, Limit rod. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0033] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "several and more" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] like Figure 1-3 The figures shown are an exploded view of the integrated packaged fuel cell stack and a schematic diagram of the assembled product. The integrated housing packaged fuel cell stack structure consists of a front end plate 100, a rear end plate 123, a front insulation plate 101, a rear insulation plate 119, a front current collector 102, a rear current collector 118, a core 125, and a main housing 109. Figure 7 As shown, the fuel cell stack is assembled with the front end plate 100 facing down and the rear end plate 123 facing up, and the stacks are arranged sequentially from the front end plate 100 to the rear end plate 123.

[0036] The specific sequence is as follows: First, the front end plate 100 of the fuel cell stack is fixed to the main housing 109, and then the front insulation plate 101, the front current collector plate 102, the dummy battery 103, the fuel cell stack core 125, the rear current collector plate 118, the rear insulation plate 119, the fuel cell stack disc spring pressure plate 120, the disc spring assembly 121, and the adjustment plate 122 are installed into the main housing 109 in sequence. During assembly, the pressure head of the equipment completes the assembly through the fuel cell stack press-fit hole 123a in the rear end plate 123 of the fuel cell stack. Finally, the rear end plate 123 of the fuel cell stack is finally fastened to the main housing 109 to form the final fuel cell stack.

[0037] Furthermore, the front end plate 100 and the front insulation plate 101 of the fuel cell stack are integrally injection-molded end plates. The end plate material is aluminum, formed by CNC machining or die casting. The aluminum is integrally injection-molded using a high-strength, high-insulation, and non-absorbent polymer material, such as PPS + glass fiber. The dummy battery 103 consists of two metal plates that do not pass through hydrogen or air, but only through a water field, plus a dummy membrane electrode assembly (MEA) consisting of two carbon paper sheets without a proton exchange membrane in between. The purpose of the dummy battery 103 is to solve the problem of low performance caused by uneven temperature between the front end single cell and the core. The fuel cell stack core 125 is composed of bipolar plates, MEAs, and bipolar plates stacked in a crisscross pattern. The length of the stack core 125 depends on the power output of the fuel cell stack.

[0038] In this embodiment, the top of the main housing 109 is provided with a CVM housing cover plate 107, and a CVM controller 108 is installed on the CVM housing cover plate 107; a housing cover 104 is installed on one side of the main housing 109, and a maintenance cover 105 and a direct-connect copper busbar 106 are provided on the top of the housing cover 104; a hydrogen discharge safety valve 124 and a fuel cell stack purge port 127 are provided on the side wall of the main housing 109.

[0039] Specifically, the main casing not only serves as the encapsulation structure for the fuel cell stack core but also integrates various functional components. The top CVM casing cover 107 and CVM controller 108 are used to monitor and control parameters such as the stack's voltage. A casing cover 104 is installed on one side, and a maintenance cover 105 and direct-connect copper busbar 106 are located on the top for convenient maintenance and electrical connections. A hydrogen venting safety valve 124 and a fuel cell stack purge port 127 on the side wall ensure safe operation of the stack and gas emission. By integrating these components onto the main casing 109, external connection structures are reduced, improving space utilization. This allows the fuel cell stack to maintain high volumetric power density while reducing overall manufacturing costs and maintenance complexity.

[0040] In this embodiment, a lifting ring 117 is provided on the outer surface of the main housing 109. The lifting ring 117 is fixed to the top of the main housing 109 by welding or bolts. When it is necessary to move the fuel cell stack, it is connected to the lifting ring 117 through an external lifting device (such as the hook of a crane). The external pulling force is transmitted to the main housing 109 through the lifting ring 117, thereby driving the entire fuel cell stack to move, realizing safe and convenient lifting.

[0041] like Figure 4-8As shown, a first upper limit rod 110 and a second upper limit rod 111 are installed on the upper end face inside the main housing 109, a left limit rod 112 is installed on the left side, a right limit rod 113 is installed on the right side, and a first lower limit rod 130 and a second lower limit rod 131 are installed on the lower end face. Before the end plates and other parts enter the main housing 109, they are first positioned by positioning pins through the positioning pin holes 400 on each limit rod 1000 and the positioning pin holes 401 on the housing side, ensuring that the limit rods 1000 do not deviate from the main housing 109. Then, the limit rod fixing bolts 115 pass through the bolt holes 403 on the housing side and engage with the bolt holes 402 on the limit rod side. In this way, the six limit rods 1000 around the perimeter are fitted to the main housing 109.

[0042] It should be noted that when designing the limiting rod 1000, the gap 410 between the inner side of the limiting rod 1000 and the fuel cell core 125 must be calculated in advance. Taking into account the machining tolerances, assembly tolerances, and tooling position tolerances of the main housing 109, the limiting rods 1000, and the fuel cell core 125, it is necessary to ensure that all bipolar plates and membrane electrodes of the fuel cell core 125 can pass smoothly through the inner surface of the limiting rods 1000. At the same time, after the fuel cell core 125 is locked, the gap 410 between the limiting rod 1000 and the fuel cell core 125 should not be insufficient to cause fuel cell gastight leakage, poor performance consistency, and other problems.

[0043] Furthermore, each limiting rod 1000 is provided with a limiting rod positioning hole 140 in the installation direction to ensure that the bottom end face of the tooling fits with the top end face of the limiting rod 1000 without misalignment, while the side end face fits with the inner surface of the limiting rod 1000. This ensures that during the pressing process, the fuel cell core 125, which protrudes from the main housing 109, can be smoothly pressed into the main housing 109 through the tooling without deformation or misalignment. After the fuel cell stack core 125, end plates, and other components are press-fitted, the limiting rod fixing bolts 115 used to fix the limiting rods 100 and the main housing 109 are removed. Then, the limiting rod adjusting screw 114 is screwed into the housing side adjusting screw threaded hole 405. After engaging with the limiting rod side adjusting screw limiting hole 404, the gap between the limiting rod 1000 and the fuel cell stack core 125 is adjusted by rotating the limiting rod adjusting screw 114 to adjust its screwing depth. Under the combined action of the limiting rod positioning pin 116, the limiting rod 1000 fits and is fixed to the fuel cell stack core 125 without deviation or gap. Each limiting rod 1000 has two limiting rod positioning pin holes 400, a limiting rod side bolt hole 402, and a limiting rod side adjusting screw limiting hole 404 at both ends. The limiting rod adjusting screw 114 and the limiting rod positioning pin 116 at both ends make the limiting rod 1000 more stable and reduce adjustment deviation.

[0044] Meanwhile, at the blind end of the fuel cell core 125, there are also 8 end plate adjusting screws 126 evenly distributed in the central area at the rear end plate 123 of the fuel cell stack. These are used to adjust the assembly of the bipolar plates, sealing strips, and membrane electrodes, as well as to address uneven stress caused by manufacturing tolerances. When the fuel cell stack is in operation for a long time, the adjusting plate 122 is installed inside the fuel cell stack, and the rear end plate 123 of the fuel cell stack has threaded holes for the end plate adjusting screws 126 to engage. When the sealing strip experiences stress relaxation, affecting the fuel cell stack's sealing performance, the screwing depth of the end plate adjusting screws 126 is used to compensate for the gap caused by the relaxation of the sealing strip, thus ensuring the performance and lifespan of the fuel cell stack.

[0045] Specifically, the main housing 109 not only serves as the encapsulation structure for the fuel cell stack core 125, but also directly fixes the system BOP (Balance of Plant) accessories to the fuel cell stack shell and is exposed to the environment for extended periods. Therefore, the fuel cell stack shell needs to possess higher precision, higher strength, and higher insulation compared to traditional fuel cell stack structures. In this design, the main housing 109 cannot use a segmented assembly structure; it requires integrated machining or integral casting to enhance the shell's strength and the dimensional accuracy of its internal mating surfaces. For insulation, novel passivation and insulating powder coating processes are employed to strengthen the insulation of the fuel cell stack shell and the strength of the insulating materials.

[0046] It should be noted that the surrounding limit rods 1000 are made of high-strength metal or high-strength, high-toughness non-metallic materials, such as aluminum alloy or aluminum alloy + epoxy resin board. Since the limit rods 1000 are in contact with the fuel cell stack core 125 and the main housing 109, the insulation of the limit rods 1000 also needs to be considered. The surrounding limit rods 1000 also adopt a new passivation + insulating powder coating process to enhance insulation. Alternatively, a conventional solution can be purchased, in which an insulating board, such as an epoxy resin board or PPS board, is attached to the inner surface 200 of the limit rod. It is necessary to ensure the bonding strength and precision between the attached insulating board and the inner surface 200 of the limit rod, so as not to affect the press-fitting of the fuel cell stack core 125.

[0047] In summary, this utility model solves the problem of uneven force distribution caused by point force distribution methods such as screws or steel strips in traditional fuel cell stacks by using the integrated structure of the main housing 109 and the tight fit between the front and rear end plates, combined with the limiting rods 1000 distributed in the four directions of upper, lower, left, and right inside the main housing 109. Each limiting rod 1000 is fixed to the housing side bolt hole 403 and the limiting rod side bolt hole 402 by the limiting rod fixing bolt 115, and is precisely positioned by the limiting rod positioning pin 400 and the housing side positioning pin hole 401. At the same time, a gap 410 is reserved to accommodate machining and assembly tolerances, so that the bipolar plates and membrane electrodes of the fuel cell stack core 125 are subjected to uniform force during the encapsulation process, avoiding the problems of sealing failure and poor performance consistency, and significantly improving the assembly accuracy and long-term operational stability of the fuel cell stack.

[0048] Based on the above description and the preferred embodiments of this utility model, it will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated housing package stack structure, characterized by, include: The fuel cell stack front end plate (100), fuel cell stack rear end plate (123), main shell (109), fuel cell stack core (125), and limit rod (1000); The main housing (109) is an integral structure, with its front end fixedly connected to the front end plate (100) of the fuel cell stack and its rear end fastened to the rear end plate (123) of the fuel cell stack. The limiting rod (1000) includes: a first upper limiting rod (110) and a second upper limiting rod (111) distributed on the upper end face inside the main housing (109); a first lower limiting rod (130) and a second lower limiting rod (131) distributed on the lower end face inside the main housing (109); a left limiting rod (112) disposed on the left side inside the main housing (109); and a right limiting rod (113) disposed on the right side inside the main housing (109). The limiting rod (1000) is fixed to the inner wall of the main housing (109) by a limiting rod fixing bolt (115) passing through the bolt hole (403) on the housing side and engaging with the bolt hole (402) on the limiting rod side; a gap (410) is reserved between the inner surface (200) of the limiting rod and the fuel cell stack core (125); the limiting rod (1000) is provided with limiting rod positioning pin holes (400) at both ends, and is positioned by the limiting rod positioning pin (116) engaging with the positioning pin hole (401) on the housing side; The rear end plate (123) of the fuel cell stack has a number of end plate adjusting screws (126) evenly distributed in the central area. The end plate adjusting screws (126) cooperate with the threaded holes on the rear end plate (123) of the fuel cell stack to adjust the assembly tolerance of the fuel cell stack core (125) and compensate for the loosening of the sealing strip.

2. The integrated housing-encapsulated fuel cell stack structure according to claim 1, characterized in that: The stack core (125) is located inside the main housing (109) and is composed of bipolar plates and membrane electrodes stacked alternately; the gap (410) is determined by comprehensive calculation based on machining tolerance, assembly tolerance and tooling position tolerance.

3. The integrated housing-encapsulated fuel cell stack structure according to claim 1, characterized in that: The front end plate (100) of the fuel cell stack is sequentially connected to the front insulation plate (101) and the front current collector plate (102) of the fuel cell stack, and is formed into a composite end plate through an integrated injection molding process. The composite end plate is made of aluminum substrate covered with polymer insulating material.

4. The integrated housing-encapsulated fuel cell stack structure according to claim 3, characterized in that: The front end of the fuel cell stack core (125) is provided with a dummy battery (103). The dummy battery (103) is composed of a metal plate that is not connected to the air field but only to the water field and a dummy membrane electrode, and is installed adjacent to the front current collector (102) of the fuel cell stack.

5. The integrated housing-encapsulated fuel cell stack structure according to claim 1, characterized in that: An insulating plate is attached to the inner surface (200) of the limiting rod. The insulating plate is an epoxy resin plate or a PPS plate and is connected to the limiting rod (1000) by adhesive bonding or mechanical fixing.

6. The integrated housing-encapsulated fuel cell stack structure according to claim 1, characterized in that: The main housing (109) is provided with a CVM housing cover plate (107) on the top, and a CVM controller (108) is installed on the CVM housing cover plate (107); a housing cover (104) is installed on one side of the main housing (109), and a maintenance cover (105) and a direct-connect copper busbar (106) are provided on the top of the housing cover (104); a hydrogen discharge safety valve (124) and a fuel cell stack purge port (127) are provided on the side wall of the main housing (109).

7. The integrated housing-encapsulated fuel cell stack structure according to claim 1, characterized in that: Between the rear end plate (123) of the fuel cell stack and the main housing (109), there are sequentially arranged a rear current collector plate (118), a rear insulation plate (119), a disc spring pressure plate (120), a disc spring assembly (121), and an adjustment plate (122). The disc spring assembly (121) is pre-tightened through the fuel cell stack press-fit hole (123a).

8. The integrated housing-encapsulated fuel cell stack structure according to claim 1, characterized in that: The limiting rod adjusting screw (114) of the limiting rod (1000) passes through the housing side adjusting screw thread hole (405) and engages with the limiting rod side adjusting screw limiting hole (404). The gap (410) between the limiting rod (1000) and the fuel cell stack core (125) is controlled by the screwing depth of the limiting rod adjusting screw (114).

9. The integrated housing-encapsulated fuel cell stack structure according to claim 1, characterized in that: The outer surface of the main housing (109) is provided with a lifting ring (117), which is fixed to the top of the main housing (109) by welding or bolts.

10. The integrated housing-encapsulated fuel cell stack structure according to claim 1, characterized in that: The limiting rod (1000) is provided with a limiting rod positioning hole (140) in the installation direction to ensure that the bottom end face of the tooling fits with the top end face of the limiting rod (1000) to avoid misalignment.

Images