Solid oxide fuel electrolytic hydrogen production system and electric pile module thereof

Abstract

The invention relates to a solid oxide fuel electrolysis hydrogen production system and an electric pile module thereof. The electric pile module comprises an electric pile, a gas distribution platform and a pressing mechanism. A plurality of first channels are formed in the bottom of the electric pile, a plurality of second channels are formed in the surface, close to the electric pile, of the gas distribution platform, the second channels and the first channels are in one-to-one correspondence, the electric pile is arranged on the gas distribution platform, and the first channels and the corresponding second channels are communicated in the stacking direction of the electric pile. And the pressing mechanism is arranged on the electric pile and is used for connecting the electric pile with the gas distribution platform in a sealing manner. A plurality of second channels are formed in the surface, close to the galvanic pile, of the gas distribution platform, that is, the gas distribution platform directly distributes gas to the first channels of the galvanic pile through the second channels, the sizes of the second channels are larger, and the gas channel resistance in the gas distribution process can be effectively reduced; and meanwhile, the medium can be uniformly distributed into the galvanic pile through the second channel, so that uniform distribution of the medium in the galvanic pile is ensured, and the problem of poor galvanic pile performance caused by local overheating is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of solid oxide fuel electrolysis hydrogen production system, and in particular to a solid oxide fuel electrolysis hydrogen production system and a stack module thereof. Background Art

[0002] Common water electrolysis hydrogen production technologies include alkaline water electrolysis hydrogen production, proton exchange membrane electrolysis hydrogen production and solid oxide electrolysis cell (SOEC) electrolysis hydrogen production. Among them, the solid oxide electrolysis cell is one of the common water electrolysis hydrogen production technologies. When performing electrolysis, water vapor needs to be introduced into the cathode inlet of the stack. The water vapor is gradually converted into hydrogen from the cathode inlet under the action of electric field electrolysis. Among them, the stack module is the basic component of the solid oxide fuel cell electrolysis hydrogen production system.

[0003] In the related art, an air intake pipeline is connected to the bottom of the fuel cell stack to introduce water vapor and air into the fuel cell stack. On the one hand, it is difficult to ensure uniform gas distribution for each fuel cell stack by intake through the pipeline; on the other hand, the air duct resistance of intake through the pipeline is relatively large. Summary of the invention

[0004] Based on this, it is necessary to provide a solid oxide fuel electrolysis hydrogen production system and its stack module to address the problems of poor uniformity of gas distribution to the fuel cell through pipelines and large gas path resistance.

[0005] A battery stack module, comprising:

[0006] A battery stack, wherein the bottom of the battery stack has a plurality of first channels;

[0007] A gas distribution platform, wherein a plurality of second channels are provided on a surface of the gas distribution platform close to the fuel cell stack, wherein the second channels correspond to the first channels one by one, the fuel cell stack is arranged on the gas distribution platform, and the first channels are connected to the corresponding second channels along the stacking direction of the fuel cell stack;

[0008] A clamping mechanism is arranged on the fuel cell stack, and is used to seal the fuel cell stack and the gas distribution platform.

[0009] In one embodiment, a gas distribution groove and an air outlet groove are provided inside the gas distribution platform, the second channel includes a second air inlet channel and a second air outlet channel, an air inlet and an air outlet are provided on the gas distribution platform, the air inlet is connected to the second air inlet channel through the gas distribution groove, and the second air outlet channel is connected to the air outlet through the air outlet groove.

[0010] In one of the embodiments, there are multiple fuel cell stacks, and the gas distribution channels for distributing the same working fluid are arranged in a one-to-one correspondence with the fuel cell stacks, and the multiple gas distribution channels for distributing the same working fluid are symmetrical about the center of the air inlet.

[0011] In one of the embodiments, projected along the stacking direction of the fuel cell stack, the second air intake channel is located within the range of the air distribution channel.

[0012] In one of the embodiments, a sealing gasket is provided on the gas distribution platform, a first strip-shaped through hole is opened on the sealing gasket, the second channel is connected with the first channel through the first strip-shaped through hole, and when the clamping mechanism clamps the battery stack, the sealing gasket is used to achieve a sealed connection between the second channel and the first channel.

[0013] In one embodiment, the stack module includes a first insulating member, and the sealing gasket includes a first layer of sealing gasket and a second layer of sealing gasket, the first layer of sealing gasket, the first insulating member and the second layer of sealing gasket are stacked in sequence, the first insulating member is located on a side of the first layer of sealing gasket close to the gas distribution platform, and the first insulating member is provided with second strip-shaped through holes corresponding one-to-one to the second channels.

[0014] In one embodiment, there are multiple sealing gaskets, and each of the second channels is connected to the first channel through a first strip-shaped through hole on the corresponding sealing gasket.

[0015] In one embodiment, the stack module includes a base, and the gas distribution platform is arranged on the base;

[0016] The clamping mechanism includes a first screw, a first locking nut, an elastic member and a pressure assembly. The pressure assembly is arranged on an end of the battery stack away from the gas distribution platform. One end of the first screw is connected to the base, and the other end passes through the pressure assembly and is locked with the first locking nut. The elastic member is sleeved outside the first screw, and one end of the elastic member abuts against the first locking nut, and the other end abuts against the pressure assembly.

[0017] In one embodiment, there are multiple battery stacks, and the pressure assembly includes a pressure block and a uniform force block. The first screw passes through the center of the pressure block, and the pressure block has multiple ends at the same distance from the center, and each end is crimped to the battery stack through a uniform force block.

[0018] In one of the embodiments, the size of the force block gradually increases along the direction from the fuel cell stack to the gas distribution platform.

[0019] In one embodiment, the pressure assembly further includes a second screw and a second locking nut, one end of the second screw is connected to the force equalizing block, and the other end passes through the pressure block to be locked by the second locking nut.

[0020] In one of the embodiments, the fuel cell stack module includes a second insulating member, and the second insulating member is disposed between the fuel cell stack and the pressure assembly.

[0021] A solid oxide fuel electrolysis hydrogen production system comprises a plurality of the above-mentioned fuel cell modules.

[0022] In the above-mentioned solid oxide fuel electrolysis hydrogen production system and its stack module, the gas distribution platform is provided with multiple second channels on the surface close to the stack, that is, the gas distribution platform directly distributes gas to the first channel of the stack through the second channel. The second channel is larger in size, which can effectively reduce the airway resistance during the gas distribution process; at the same time, the medium can be evenly distributed to the stack through the second channel, ensuring the uniform distribution of the medium in the stack, avoiding local overheating and causing poor stack performance. The clamping mechanism is arranged on the stack to ensure the sealed connection between the stack and the gas distribution platform to prevent gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the internal structure of a battery stack module in one embodiment.

[0024] Figure 2 Schematic diagram of the structure of the gas distribution platform in one embodiment.

[0025] Figure 3 Schematic diagram of the structure inside the gas distribution platform in one embodiment.

[0026] Figure 4 It is a schematic diagram of the structure of the battery stack module after removing the battery stack in one embodiment.

[0027] Figure 5 It is a schematic diagram of the structure in which a sealing gasket is disposed on a first insulating member in one embodiment.

[0028] Figure 6 Schematic diagram of the internal structure of a battery stack module in one embodiment.

[0029] Figure 7 Schematic diagram of the structure of a battery stack module in one embodiment.

[0030] Figure numerals: 100, battery stack; 200, gas distribution platform; 210, second air inlet channel; 211, water vapor second air inlet channel; 212, air second air inlet channel; 220, second air outlet channel; 221, water vapor second air outlet channel; 222, air second air outlet channel; 230, gas distribution channel; 231, water vapor gas distribution channel; 232, air gas distribution channel; 240, air outlet channel; 241, water vapor outlet channel; 242, air outlet channel; 250, air inlet; 251, air inlet; 252, water vapor inlet; 260, air outlet; 261, air outlet; 262, water vapor outlet; 270, seal Sealing gasket; 271, first strip-shaped through hole; 280, first positioning groove; 300, clamping mechanism; 310, first screw; 320, first locking nut; 330, elastic member; 340, pressure assembly; 341, pressure block; 342, uniform force block; 343, second screw; 344, second locking nut; 350, sleeve; 410, air inlet pipe; 411, water vapor inlet pipe; 412, air inlet pipe; 430, air outlet pipe; 431, water vapor outlet pipe; 432, air outlet pipe; 510, first insulating member; 511, second strip-shaped through hole; 520, second insulating member; 610, base; 620, shell; 630, heater. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0037] See also Figure 1-Figure 7, a fuel cell module provided in one embodiment of the present application includes a fuel cell stack 100, a gas distribution platform 200 and a clamping mechanism 300. The fuel cell stack 100 has a plurality of first channels at the bottom. The gas distribution platform 200 is provided with a plurality of second channels on the surface close to the fuel cell stack 100, and the second channels correspond to the first channels one by one. The fuel cell stack 100 is arranged on the gas distribution platform 200, and the first channels are connected to the corresponding second channels along the stacking direction of the fuel cell stack 100. The clamping mechanism 300 is arranged on the fuel cell stack 100, and the clamping mechanism 300 is used to seal the fuel cell stack 100 and the gas distribution platform 200.

[0038] In this embodiment, the surface of the gas distribution platform 200 close to the stack 100 is provided with a plurality of second channels, that is, the gas distribution platform 200 directly distributes gas to the stack 100 through the second channels. Compared with the pipeline, the second channels are larger in size, which can effectively reduce the airway resistance during the gas distribution process; at the same time, the medium can be evenly distributed to the stack 100 through the second channels, ensuring the uniform distribution of the medium in the stack 100, avoiding local overheating and causing poor performance of the stack 100. The clamping mechanism 300 is arranged on the stack 100 to ensure the sealed connection between the stack 100 and the gas distribution platform 200 to prevent gas leakage.

[0039] In addition, the present application adopts the gas distribution platform 200 for direct gas distribution, and the gas distribution platform 200 is arranged on the base 610, which is conducive to ensuring the flatness of the base 610, making the structure of the fuel cell module more stable and less prone to deformation.

[0040] Specifically, projected along the stacking direction of the battery stack 100 , the first channel overlaps with the second channel or the first channel is located within the range of the second channel, thereby allowing the medium to fully flow into the battery stack 100 .

[0041] In some embodiments, in combination with FIG. Figure 3 A gas distribution groove 230 and an air outlet groove 240 are provided inside the gas distribution platform 200, the second channel includes a second air inlet channel 210 and a second air outlet channel 220, and an air inlet 250 and an air outlet 260 are provided on the gas distribution platform 200. The air inlet 250 is connected to the second air inlet channel 210 through the gas distribution groove 230, and the second air outlet channel 220 is connected to the air outlet 260 through the air outlet groove 240.

[0042] In this embodiment, the first channel includes a first air inlet channel and a first air outlet channel. The working fluid entering the gas distribution channel 230 from the air inlet 250 first fills the gas distribution channel 230, then rises from the gas distribution channel 230 to the second air inlet channel 210, and then passes through the second air inlet channel 210 and the first air inlet channel in turn to enter the fuel cell stack 100 for reaction. The reacted mixed gas passes through the first outlet channel, the second outlet channel 220, the outlet channel 240, and the outlet 260 in turn to flow into the outlet pipe 430. By setting the gas distribution channel 230, the flow rate of the working fluid can be reduced, which facilitates the working fluid to flow evenly into the second air inlet channel 210, thereby improving the uniformity of gas distribution.

[0043] In some embodiments, there are multiple fuel cell stacks 100 , and the gas distribution channels 230 for distributing the same working fluid are arranged one-to-one with the fuel cell stacks 100 . The multiple gas distribution channels 230 for distributing the same working fluid are symmetrical about the center of the air inlet 250 .

[0044] Specifically, the working fluid includes water vapor and air, the air inlet 250 is connected to the air inlet pipe 410, and the air outlet 260 is connected to the air outlet pipe 430, wherein there are two air inlets 250, which are respectively used to transport water vapor and air to the gas distribution platform 200, and the corresponding air inlet pipe 410 includes a water vapor inlet pipe 411 and an air inlet pipe 412, and heaters 630 are respectively wound around the water vapor inlet pipe 411 and the air inlet pipe 412, which are used to control the temperature and heat the water vapor and air in the pipe. The air outlet pipe 430 also includes a water vapor outlet pipe 431 and an air outlet pipe 432, that is, the total number of pipes is 4, which greatly reduces the number of pipes and effectively reduces the influence of pipe insulation and heat radiation.

[0045] Furthermore, the gas distribution platform 200 has a central axis, on which are arranged in sequence an air inlet 251, a water vapor outlet 262, an air outlet 261 and a water vapor inlet 252, and the two battery stacks 100 are respectively located on both sides of the central axis. The water vapor or air entering from the air inlet 250 can flow to both sides of the central axis at the same time so as to fill the second air inlet channel 210 located at the bottom of the two battery stacks 100 at the same time.

[0046] Specifically, the gas distribution platform 200 is provided with two air distribution channels 232 which are interconnected and symmetrical about the central axis, two water vapor outlet channels 241 which are interconnected and symmetrical about the central axis, two air outlet channels 242 which are interconnected and symmetrical about the central axis, and two water vapor distribution channels 231 which are interconnected and symmetrical about the central axis.

[0047] The air distribution channel 232 , the water vapor outlet channel 241 and the water vapor distribution channel 231 are all L-shaped structures, and the air outlet channel 242 is a T-shaped structure.

[0048] Combination Figure 2 , the second air inlet channel 210 includes an air second air inlet channel 212 and a water vapor second air inlet channel 211, and the second air outlet channel 220 includes an air second air outlet channel 222 and a water vapor second air outlet channel 221. Two first positioning grooves 280 are provided on the surface of the gas distribution platform 200, and the two first positioning grooves 280 are arranged in a one-to-one correspondence with the two battery stacks 100. Along the direction from one battery stack 100 to the other battery stack 100, the air second air inlet channel 212, the water vapor second air inlet channel 211, the water vapor second air outlet channel 221 and the air second air outlet channel 222 are arranged in sequence in each first positioning groove 280.

[0049] In some embodiments, projected along the stacking direction of the fuel cell stack 100, the second air intake channel 210 is located within the gas distribution groove 230, and the area of ​​the gas distribution groove 230 is larger than the area of ​​the second air intake channel 210. By adjusting the ratio of the area of ​​the gas distribution groove 230 to the area of ​​the second air intake channel 210, the flow rate of the working fluid can be changed so that the working fluid fills the entire second air intake channel 210.

[0050] In some embodiments, in combination Figure 4 and Figure 5 A sealing gasket 270 is provided on the gas distribution platform 200, and a first strip through hole 271 is opened on the sealing gasket 270. The second channel is connected to the first channel through the first strip through hole 271. When the clamping mechanism 300 clamps the fuel cell stack 100, the sealing gasket 270 is used to achieve a sealed connection between the second channel and the first channel to prevent gas leakage between the gas distribution platform 200 and the fuel cell stack 100.

[0051] In some embodiments, the stack module includes a first insulating member 510, and the sealing gasket 270 includes a first layer of sealing gasket and a second layer of sealing gasket. The first layer of sealing gasket, the first insulating member 510 and the second layer of sealing gasket are stacked in sequence, and the first insulating member 510 is located on the side of the first layer of sealing gasket close to the gas distribution platform 200. The first insulating member 510 is provided with second strip-shaped through holes 511 corresponding to the second channels one by one.

[0052] In this embodiment, the first insulating member 510 is used to insulate the gas distribution platform 200 from the fuel cell stack 100, and the first layer of sealing gasket 270 is arranged between the first insulating member 510 and the gas distribution platform 200 to prevent air leakage between the first insulating member 510 and the fuel cell stack 100; the second layer of sealing gasket 270 is arranged between the first insulating member 510 and the fuel cell stack 100 to prevent air leakage between the first insulating member 510 and the fuel cell stack 100.

[0053] Furthermore, there are multiple sealing gaskets 270 , and each second channel is connected to the first channel through a first strip-shaped through hole 271 on the corresponding sealing gasket 270 .

[0054] In this embodiment, the number of sealing gaskets 270 is the same as the number of second channels, and each second channel is respectively provided with a sealing gasket 270, which is beneficial to reducing the area of ​​the sealing gasket 270. When the clamping mechanism 300 presses the electric pusher onto the gas distribution platform 200, it can further prevent gas leakage between the gas distribution platform 200 and the fuel cell stack 100, thereby improving the sealing performance.

[0055] In some embodiments, in combination Figure 1 The stack module includes a base 610, and the gas distribution platform 200 is arranged on the base 610; the clamping mechanism 300 includes a first screw 310, a first locking nut 320, an elastic member 330 and a pressure assembly 340, and the pressure assembly 340 is arranged on the end of the stack 100 away from the gas distribution platform 200. One end of the first screw 310 is connected to the base 610, and the other end passes through the pressure assembly 340 and is locked with the first locking nut 320. The elastic member 330 is sleeved outside the first screw 310, and one end of the elastic member 330 abuts against the first locking nut 320, and the other end abuts against the pressure assembly 340.

[0056] Specifically, the pressing mechanism 300 further includes a sleeve 350 , which is sleeved on the first screw rod 310 and located between the elastic member 330 and the pressure assembly 340 . The sleeve 350 is used for transmitting force.

[0057] In this embodiment, the pressure applied to the battery stack 100 can be adjusted by the first locking nut 320, so that the pressure can be calibrated and it is convenient to check the pressure regularly. The elastic member 330 can be a spring or an elastic block. Since the internal pressure of the battery stack 100 changes greatly during the reaction process, the setting of the elastic member 330 facilitates the adaptive adjustment of the pressure in the battery stack 100. In addition, the clamping mechanism 300 can also realize the fixation and pressurization setting of different models of battery stacks 100.

[0058] A first positioning groove 280 is provided on the gas distribution platform 200, and a first insulating member 510 is arranged in the first positioning groove 280. The first positioning groove 280 only limits the two adjacent surfaces of the first insulating member 510, and the other two surfaces are not limited, which is used to reserve space for the first insulating member 510 to expand due to heat. A second positioning groove is provided on the first insulating member 510, and similarly the second positioning groove only limits the two adjacent surfaces of the battery stack 100, and the other two surfaces are not limited, which is used to reserve space for the battery stack 100 to expand due to heat. The clamping mechanism 300 is used to fix the battery stack 100, eliminate the damage to the battery stack 100 caused by the lateral shear force, and fully protect the battery stack 100.

[0059] In some embodiments, there are multiple battery stacks 100, and the pressure assembly 340 includes a pressure block 341 and a uniform force block 342. The first screw 310 passes through the center of the pressure block 341. The pressure block 341 has multiple ends with the same distance from the center, and each end is crimped to the battery stack 100 through a uniform force block 342.

[0060] Taking the case where there are two battery stacks 100 as an example, the pressing block 341 is a beam, the first screw 310 passes through the center of the beam, and both ends of the beam are pressed onto the battery stack 100 through the force equalizing blocks 342, so that the pressure on each battery stack 100 is the same.

[0061] Of course, in other embodiments, there may be three, four or five battery stacks 100. When there are three battery stacks 100, the three battery stacks 100 are respectively located at three vertices of an equilateral triangle, and the first screw 310 passes through the center of the equilateral triangle.

[0062] Furthermore, the size of the force equalizer 342 gradually increases along the direction from the stack 100 to the gas distribution platform 200. The force equalizer 342 contacts the pressure block 341 through the convex point, so that the pressure of the clamping mechanism 300 gradually spreads from point to surface to the entire stack 100, which is conducive to ensuring the uniformity of pressure at various positions of the stack 100.

[0063] Specifically, the pressure assembly 340 further includes a second screw rod 343 and a second locking nut 344 . One end of the second screw rod 343 is connected to the force equalizing block 342 , and the other end passes through the pressure block 341 to be locked by the second locking nut 344 .

[0064] In this embodiment, the second locking nut 344 is adjusted to ensure that the force block 342 is in contact with the fuel cell stack 100 , thereby ensuring pressure balance on each fuel cell stack 100 .

[0065] In some embodiments, in combination Figure 7 The stack module includes a housing 620, one end of the first screw 310 away from the base 610 extends to the outside of the housing 620, and the elastic member 330 is arranged outside the housing 620 to prevent the elastic member 330 from failing due to excessive temperature in the housing 620. The housing 620 is sleeved on the base 610, and both the base 610 and the housing 620 are made of heat-insulating materials.

[0066] In some embodiments, the stack module includes a second insulating member 520, which is disposed between the stack 100 and the pressure assembly 340, and is used to ensure insulation between the stack 100 and the pressure assembly 340. Specifically, the second insulating member 520 is clamped at the bottom of the uniform force block 342.

[0067] In some embodiments, the battery stack 100 is arranged in a vertical direction, and the distance between two adjacent battery stacks 100 is controllable, which makes installation and disassembly of the battery stack 100 more convenient.

[0068] An embodiment of the present application also provides a solid oxide fuel electrolysis hydrogen production system, including the above-mentioned stack module. The present application highly integrates various functions around the safe operation of the stack 100, has pressurization, fixation, sealing, insulation, gas distribution, and repeatable disassembly and assembly functions, and occupies a small space, greatly saving layout space, which is conducive to the miniaturization design of a high-power solid oxide fuel electrolysis hydrogen production system.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A stack module, characterized in that: The stack module comprises: A battery stack, wherein the bottom of the battery stack has a plurality of first channels; A gas distribution platform, wherein a plurality of second channels are provided on a surface of the gas distribution platform close to the fuel cell stack, wherein the second channels correspond to the first channels one by one, the fuel cell stack is arranged on the gas distribution platform, and the first channels are connected to the corresponding second channels along the stacking direction of the fuel cell stack; A clamping mechanism is arranged on the fuel cell stack, and is used to seal the fuel cell stack and the gas distribution platform.

2. The battery stack module according to claim 1, characterized in that: A gas distribution groove and an air outlet groove are provided inside the gas distribution platform, the second channel includes a second air inlet channel and a second air outlet channel, an air inlet and an air outlet are provided on the gas distribution platform, the air inlet is connected to the second air inlet channel through the gas distribution groove, and the second air outlet channel is connected to the air outlet through the air outlet groove.

3. The battery stack module according to claim 2, characterized in that: There are multiple fuel cell stacks, and the gas distribution channels for distributing the same working fluid are arranged in a one-to-one correspondence with the fuel cell stacks. The multiple gas distribution channels for distributing the same working fluid are symmetrical about the center of the air inlet.

4. The battery stack module according to claim 2, characterized in that: Projected along the stacking direction of the fuel cell stack, the second air intake channel is located within the range of the air distribution channel.

5. The battery stack module according to claim 1, characterized in that: A sealing gasket is provided on the gas distribution platform, and a first strip-shaped through hole is opened on the sealing gasket. The second channel is connected with the first channel through the first strip-shaped through hole. When the clamping mechanism clamps the fuel cell stack, the sealing gasket is used to achieve a sealed connection between the second channel and the first channel.

6. The battery stack module according to claim 5, characterized in that: The stack module includes a first insulating member, and the sealing gasket includes a first layer of sealing gasket and a second layer of sealing gasket. The first layer of sealing gasket, the first insulating member and the second layer of sealing gasket are stacked in sequence, the first insulating member is located on a side of the first layer of sealing gasket close to the gas distribution platform, and the first insulating member is provided with second strip-shaped through holes corresponding to the second channels one by one.

7. The battery stack module according to claim 5, characterized in that: There are multiple sealing gaskets, and each of the second channels is connected to the first channel through a first strip-shaped through hole on the corresponding sealing gasket.

8. The battery stack module according to claim 1, characterized in that: The stack module comprises a base, and the gas distribution platform is arranged on the base; The clamping mechanism includes a first screw, a first locking nut, an elastic member and a pressure assembly. The pressure assembly is arranged on an end of the battery stack away from the gas distribution platform. One end of the first screw is connected to the base, and the other end passes through the pressure assembly and is locked with the first locking nut. The elastic member is sleeved outside the first screw, and one end of the elastic member abuts against the first locking nut, and the other end abuts against the pressure assembly.

9. The battery stack module according to claim 8, characterized in that: There are multiple battery stacks, and the pressure assembly includes a pressure block and a uniform force block. The first screw passes through the center of the pressure block, and the pressure block has multiple ends with the same distance from the center. Each end is crimped to the battery stack through a uniform force block.

10. The battery stack module according to claim 9, characterized in that: Along the direction from the fuel cell stack to the gas distribution platform, the size of the force equalizer gradually increases.

11. The battery stack module according to claim 9, characterized in that: The pressure assembly further includes a second screw rod and a second locking nut, wherein one end of the second screw rod is connected to the force equalizing block, and the other end of the second screw rod passes through the pressure block to be locked by the second locking nut.

12. The battery stack module according to claim 8, characterized in that: The battery stack module includes a second insulating member, which is arranged between the battery stack and the pressure assembly.

13. A solid oxide fuel electrolysis hydrogen production system, characterized in that: It comprises a plurality of fuel cell stack modules as described in any one of claims 1-12.

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