Distribution structure and stack module

Abstract

The utility model relates to fuel cell technical field discloses distribution structure and electric pile module, and this distribution structure includes two gas inlet straight flow channels and two exhaust straight flow channels of same extension direction, the extension length of two gas inlet straight flow channels and the extension length of two exhaust straight flow channels are same, two gas inlet straight flow channels and two exhaust straight flow channels are along first directional interval distribution, along the extension direction, two gas inlet straight flow channels all penetrate the first side of distribution body and all do not penetrate the second side of distribution body, two exhaust straight flow channels all penetrate the second side of distribution body and all do not penetrate the first side of distribution body, every group of gas distribution hole group all includes four gas distribution holes on the same straight line along first directional and all penetrates one side wall of distribution body along second directional, and four gas distribution holes one to one with two gas inlet straight flow channels and two exhaust straight flow channels direct communication, the simple structure of this distribution structure makes the gas circuit consistency of each monomer electric pile good, and the gas distribution uniformity is good.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, and in particular to the distribution structure and fuel cell stack module. Background Technology

[0002] Currently, the distribution structure applied to flat battery modules typically has four sets of channels. These four sets of channels are used one-to-one to deliver fuel cell fuel, fuel cell air, fuel cell exhaust gas, and fuel cell air exhaust gas to the battery stack.

[0003] One existing distribution structure applied to a flat battery module can deliver air and gas feedstock to the battery stack and discharge the air and gas exhaust from the battery stack. It can also avoid the problem that the failure of individual battery stacks installed on it will affect the normal operation of other battery stacks. However, its structure is complex, the gas path consistency of each battery stack is poor, and the uniformity of gas distribution needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a distribution structure and a battery stack module to solve the aforementioned problems existing in the distribution structure applied to flat battery modules in the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A distribution structure includes a distribution body, within which a distribution channel group is formed. The distribution channel group includes two intake direct current channels and two exhaust direct current channels extending in the same direction. Along the extension direction, the extension lengths of the two intake direct current channels and the two exhaust direct current channels are the same. The two intake direct current channels and the two exhaust direct current channels are distributed along a first directional interval. Along the extension direction, the two intake direct current channels of the distribution channel group each penetrate a first side of the distribution body to form two intake inlets and neither penetrates a second side of the distribution body. The two exhaust direct current channels of the distribution channel group each penetrate a second side of the distribution body to form two exhaust outlets and neither penetrates a first side of the distribution body.

[0007] The air distribution channel group is provided with at least two air distribution hole groups that are spaced apart along the extension direction; each air distribution hole group includes four air distribution holes that are located on the same straight line along the first orientation and penetrate one side wall of the distribution body along the second orientation, and the four air distribution holes are directly connected to the two intake direct channels and two exhaust direct channels of the air distribution channel group; the first orientation, the second orientation and the extension direction are perpendicular to each other.

[0008] As an optional embodiment of the above distribution structure, the two intake direct current channels are respectively an air feedstock intake channel and a fuel gas intake channel, the two exhaust direct current channels are respectively an air exhaust gas exhaust channel and a fuel gas exhaust gas exhaust channel, and the four gas distribution holes are respectively an air feedstock distribution hole, a fuel gas distribution hole, an air exhaust gas distribution hole, and a fuel gas exhaust gas distribution hole. The air feedstock intake channel is directly connected to the air feedstock distribution hole, the fuel gas intake channel is directly connected to the fuel gas distribution hole, the air exhaust gas exhaust channel is directly connected to the air exhaust gas distribution hole, and the fuel gas exhaust gas exhaust channel is directly connected to the fuel gas exhaust gas distribution hole.

[0009] Along the first orientation, the distance between the air feedstock distribution port and the air exhaust distribution port is equal to the distance between the fuel gas distribution port and the fuel gas exhaust distribution port; and / or, along the extension direction, the orthographic projections of the cross sections at any two points on the air feedstock inlet channel completely coincide, the orthographic projections of the cross sections at any two points on the fuel gas inlet channel completely coincide, the orthographic projections of the cross sections at any two points on the air exhaust channel completely coincide, the orthographic projections of the cross sections at any two points on the fuel gas exhaust channel completely coincide, the cross-sectional area of ​​the air feedstock inlet channel is equal to the cross-sectional area of ​​the air exhaust channel, and the cross-sectional area of ​​the fuel gas inlet channel is equal to the cross-sectional area of ​​the fuel gas exhaust channel.

[0010] As an alternative to the above-mentioned distribution structure, the number of the air distribution channel groups is at least two, and the at least two air distribution channel groups are distributed along the first directional interval.

[0011] The fuel cell stack module includes the above-mentioned distribution structure, wherein the distribution structure is equipped with at least two individual fuel cell stacks, and the at least two individual fuel cell stacks are respectively arranged in a one-to-one correspondence with the at least two gas distribution hole groups, and the two air inlets and two air outlets of the individual fuel cell stacks are respectively connected to the four gas distribution holes of the gas distribution hole groups.

[0012] As an optional embodiment of the above-mentioned fuel cell stack module, each individual fuel cell stack is equipped with a clamping assembly and at least two sets of locking assemblies; the clamping assembly is used to clamp the individual fuel cell stack onto the distribution body along the second orientation, so that the two air inlets and two exhaust outlets of the individual fuel cell stack are sealed and connected to the four air distribution holes of the air distribution hole group in a one-to-one correspondence; the locking assembly is used to lock the clamping assembly, the individual fuel cell stack and the distribution body into a whole.

[0013] As an optional embodiment of the above-mentioned fuel cell stack module, the clamping assembly includes an upper pressure plate, an elastic element, and a lower pressure plate. Along the second orientation, the elastic element is clamped between the upper pressure plate and the lower pressure plate, the lower pressure plate is clamped between the elastic element and the individual fuel cell stack, and the individual fuel cell stack is clamped between the lower pressure plate and the distribution body.

[0014] As an alternative to the above-mentioned fuel cell stack module, the clamping assembly further includes a first insulating pad, which is sandwiched between the lower pressure plate and the individual fuel cell stack along the second orientation.

[0015] As an optional embodiment of the above-mentioned fuel cell stack module, the clamping assembly further includes a second insulating pad, which is sandwiched between the individual fuel cell stack and the distribution body along the second orientation. The second insulating pad is provided with at least two through-hole groups that extend along the second orientation. The at least two through-hole groups are correspondingly arranged with at least two gas distribution hole groups. The four through-holes of the through-hole groups are connected to the four gas distribution holes of the gas distribution hole groups. The four through-holes of the through-hole groups are also sealed and connected to the two air inlets and two exhaust ports of the individual fuel cell stack.

[0016] As an alternative to the above-mentioned fuel cell stack module, along the second orientation, a guide post is protruding from the end face of the lower pressure plate near the upper pressure plate, the upper pressure plate is provided with a guide hole that passes through along the second orientation, the elastic element is sleeved on the guide post, and the guide post is slidably inserted into the guide hole.

[0017] As an optional embodiment of the above-mentioned fuel cell stack module, the two poles of the individual fuel cell stack are both located on one side of the individual fuel cell stack along the first orientation; or, the two poles of the individual fuel cell stack are located on both sides of the individual fuel cell stack in a one-to-one correspondence along the first orientation.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a distribution structure, which includes a distribution body. A distribution channel group is formed within the distribution body. The distribution channel group includes two intake direct current channels and two exhaust direct current channels with the same extension direction. Along the extension direction, the extension lengths of the two intake direct current channels and the two exhaust direct current channels are the same. The two intake direct current channels and the two exhaust direct current channels are distributed at intervals along a first orientation. Along the extension direction, the two intake direct current channels of the distribution channel group penetrate the first side of the distribution body to form two intake inlets and neither penetrates the second side of the distribution body. The two exhaust direct current channels of the distribution channel group penetrate the second side of the distribution body to form two exhaust outlets and neither penetrates the first side of the distribution body. The distribution channel group is equipped with at least two groups of distribution holes distributed at intervals along the extension direction. Each group of distribution holes includes four distribution holes located on the same straight line along the first orientation and penetrating one sidewall of the distribution body along the second orientation. The four distribution holes are directly connected to the two intake direct current channels and the two exhaust direct current channels of the distribution channel group. The first orientation, the second orientation, and the extension direction are perpendicular to each other.

[0020] The distribution structure is simple in structure and easy to manufacture; secondly, it effectively improves the gas path consistency of each individual fuel cell stack; and thirdly, it effectively improves the gas distribution uniformity of the distribution structure.

[0021] This utility model also provides a fuel cell stack module, including the aforementioned distribution structure. The distribution structure is equipped with at least two individual fuel cell stacks, and each of the at least two individual fuel cell stacks is correspondingly arranged with at least two sets of gas distribution holes. The two air inlets and two air outlets of each individual fuel cell stack are connected to the four gas distribution holes of each set of gas distribution holes. By adopting the aforementioned distribution structure, the working performance of the formed fuel cell stack module can be effectively improved, and the production cost and assembly efficiency of the fuel cell stack module can be effectively reduced. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the distribution structure provided in a specific embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the fuel cell stack module provided in a specific embodiment of the present invention from a first perspective.

[0024] Figure 3 This is a schematic diagram of the fuel cell stack module provided in a specific embodiment of the present invention from a second perspective.

[0025] Figure 4 This is a schematic diagram of the structure of a fuel cell module after a single fuel cell stack has been disassembled, provided by a specific embodiment of the present invention, from a first perspective.

[0026] Figure 5 This is a schematic diagram of the structure of a fuel cell module after a single fuel cell stack has been disassembled, provided by a specific embodiment of the present invention, from a second perspective.

[0027] Figure 6 This is a schematic diagram of the structure of multiple fuel cell stack module arrays provided in a specific embodiment of this utility model.

[0028] In the picture:

[0029] 1. Allocate the main body;

[0030] 11. Direct air intake duct; 111. Air / fuel feedstock intake duct; 112. Gas / fuel feedstock intake duct;

[0031] 12. Exhaust direct flow channel; 121. Air exhaust flow channel; 122. Gas exhaust flow channel;

[0032] 13. Gas distribution port group; 131. Air feedstock gas distribution port; 132. Gas fuel feedstock gas distribution port; 133. Air exhaust gas distribution port; 134. Gas exhaust gas distribution port;

[0033] 14. Connecting holes;

[0034] 2. Individual fuel cell stack; 21. Pole post;

[0035] 3. Locking assembly; 31. Bolt; 32. Nut;

[0036] 41. Upper pressure plate; 42. Elastic element; 43. Lower pressure plate; 431. Guide post; 44. First insulating pad; 45. Second insulating pad. Detailed Implementation

[0037] 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 present 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, not the entire structure.

[0038] In the description of this utility model, 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 utility model based on the specific circumstances.

[0039] 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 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 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.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] This utility model provides a distribution structure, such as Figure 1-6 As shown, the distribution structure includes a distribution body 1, within which a distribution airflow channel group is formed. The distribution airflow channel group includes two intake direct current channels 11 and two exhaust direct current channels 12 extending in the same direction. Along the extension direction, the extension lengths of the two intake direct current channels 11 and the two exhaust direct current channels 12 are the same. The two intake direct current channels 11 and the two exhaust direct current channels 12 are distributed along a first directional interval. Along the extension direction, the two intake direct current channels 11 of the distribution airflow channel group each penetrate the first side of the distribution body 1 to form two intake inlets, but neither penetrates the second side of the distribution body 1. The two exhaust direct current channels 12 of the air distribution channel group both penetrate the second side of the distribution body 1 to form two exhaust outlets and neither penetrates the first side of the distribution body 1; the air distribution channel group is provided with at least two air distribution hole groups 13 distributed at intervals along the extension direction; each air distribution hole group 13 includes four air distribution holes located on the same straight line along the first orientation and penetrating one side wall of the distribution body 1 along the second orientation, and the four air distribution holes are directly connected to the two intake direct current channels 11 and the two exhaust direct current channels 12 of the air distribution channel group in a one-to-one correspondence; the first orientation, the second orientation and the extension direction are perpendicular to each other.

[0042] Taking the application of this distribution structure to the fuel cell stack module as an example: the two intake direct current channels 11 are respectively the air feedstock intake channel 111 and the fuel gas intake channel 112, and the two exhaust direct current channels 12 are respectively the air exhaust channel 121 and the fuel gas exhaust channel 122; the four distribution ports of the distribution port group 13 are respectively the air feedstock distribution port 131, the fuel gas distribution port 132, the air exhaust channel 133, and the fuel gas exhaust port 134; the air feedstock intake channel 111 is directly connected to the air feedstock distribution port 131, the fuel gas intake channel 112 is directly connected to the fuel gas distribution port 132, the air exhaust channel 121 is directly connected to the air exhaust channel 133, and the fuel gas exhaust channel 122 is directly connected to the fuel gas exhaust channel 134.

[0043] Specifically, each of the at least two groups of gas distribution ports 13 corresponds to a single fuel cell stack 2. The air feed gas distribution port 131 is used to communicate with the air inlet of the single fuel cell stack 2, the gas feed gas distribution port 132 is used to communicate with the gas inlet of the single fuel cell stack 2, the air exhaust gas distribution port 133 is used to communicate with the air exhaust gas outlet of the single fuel cell stack 2, and the gas exhaust gas distribution port 134 is used to communicate with the gas exhaust gas outlet of the single fuel cell stack 2.

[0044] Air is supplied into the air feedstock inlet duct 111 from one end of the first side of the distribution body 1, and fuel gas is supplied into the fuel gas inlet duct 112 from one end of the first side of the distribution body 1. Air exhaust gas is output from one end of the air exhaust duct 121 from one end of the second side of the distribution body 1, and fuel gas exhaust gas is output from one end of the fuel gas exhaust duct 122 from one end of the second side of the distribution body 1. Because of the air feedstock inlet duct 111, fuel gas inlet duct 112, and air exhaust gas... Both the exhaust channel 121 and the exhaust channel 122 are direct-flow channels extending along the extension direction, which makes the total length of the air intake and exhaust path and the gas intake and exhaust path of the individual fuel cell stack 2 corresponding to each air distribution hole group 13 equal along the extension direction. The air intake and exhaust time of the individual fuel cell stack 2 corresponding to each air distribution hole group 13 is approximately equal, and the gas intake and exhaust time of the individual fuel cell stack 2 corresponding to each air distribution hole group 13 is approximately equal. Therefore, compared with the prior art, it can effectively improve the consistency of the gas path of each individual fuel cell stack 2 and effectively improve the uniformity of the gas path distribution of the distribution structure.

[0045] Therefore, the distribution structure is simple in structure and easy to process; secondly, it effectively improves the gas path consistency of each individual fuel cell stack 2; and thirdly, it effectively improves the gas distribution uniformity of the distribution structure.

[0046] Specifically, gas distribution uniformity refers to the fact that when gas is distributed through the distribution structure, the flow rate, pressure, and velocity of the air feedstock allocated to each fuel cell stack are roughly the same, and the flow rate, pressure, and velocity of the gas feedstock allocated to each fuel cell stack are also roughly the same.

[0047] Optionally, such as Figure 1 As shown, along the first orientation, the distance between the air feedstock distribution port 131 and the air exhaust distribution port 133 is equal to the distance between the fuel gas feedstock distribution port 132 and the fuel gas exhaust distribution port 134. This further ensures that the air intake and exhaust times of each fuel cell stack 2 corresponding to each distribution port group 13 are approximately equal, and the fuel gas intake and exhaust times of each fuel cell stack 2 corresponding to each distribution port group 13 are approximately equal, thereby further improving the consistency of the gas path of each fuel cell stack 2 and further improving the uniformity of the gas path distribution of the distribution structure.

[0048] Optionally, such as Figure 1 As shown, along the extending direction, the orthographic projections of the cross-sections at any two points on the air feedstock inlet duct 111 completely coincide; the orthographic projections of the cross-sections at any two points on the fuel gas inlet duct 112 completely coincide; the orthographic projections of the cross-sections at any two points on the air exhaust duct 121 completely coincide; and the orthographic projections of the cross-sections at any two points on the fuel gas exhaust duct 122 completely coincide. The cross-sectional area of ​​the air feedstock inlet duct 111 is equal to the cross-sectional area of ​​the air exhaust duct 121, and the cross-sectional area of ​​the fuel gas inlet duct 112 is equal to the cross-sectional area of ​​the fuel gas exhaust duct 122. It can be understood that the air feedstock inlet duct 111 and the air exhaust duct 121 have identical shapes and volumes, and the fuel gas inlet duct 112 and the fuel gas exhaust duct 122 have identical shapes and volumes. This allows the air intake and exhaust times of each individual fuel cell stack 2 corresponding to each air distribution port group 13 to be approximately equal, and the gas intake and exhaust times of each individual fuel cell stack 2 corresponding to each air distribution port group 13 to be approximately equal, thereby further improving the consistency of the gas path of each individual fuel cell stack 2 and further improving the uniformity of the gas path distribution of the distribution structure.

[0049] In this embodiment, the air feedstock inlet channel 111, the fuel gas inlet channel 112, the air exhaust channel 121, and the fuel gas exhaust channel 122 are all rectangular parallelepipeds. In other embodiments, the air feedstock inlet channel 111 and the air exhaust channel 121 may be cylindrical, and the fuel gas inlet channel 112 and the fuel gas exhaust channel 122 may be cylindrical.

[0050] Optionally, the number of gas distribution channel groups is at least two, and the at least two gas distribution channel groups are distributed along a first directional interval. This allows for a further increase in the number of individual fuel cell stacks 2 on each distribution structure.

[0051] like Figure 1-5 As shown, in the exemplary configuration, each distribution body 1 is provided with a flow channel group, and each flow channel group is provided with seven flow port groups 13. It is understood that the number of flow channel groups on each distribution body 1 can be increased or decreased according to actual operating conditions.

[0052] like Figure 1-5 As shown, the exemplary configuration of the distribution body 1 is a cuboid plate, with the first orientation being the width direction of the distribution body 1, the second orientation being the thickness direction of the distribution body 1, and the extension direction being the length direction of the distribution body 1. It is understood that the shape of the distribution body 1 can also be adjusted according to actual working conditions.

[0053] This utility model also provides a fuel cell stack module, such as Figure 2-6 As shown, the distribution structure includes the above-described distribution structure, which is equipped with at least two individual fuel cell stacks 2. Each of the at least two individual fuel cell stacks 2 is correspondingly arranged with at least two sets of gas distribution ports 13. The two air inlets and two air outlets of each individual fuel cell stack 2 are connected to the four gas distribution ports of the gas distribution port sets 13. By adopting the above-described distribution structure, the working performance of the formed fuel cell stack module can be effectively improved, and the production cost and assembly efficiency of the fuel cell stack module can be effectively reduced.

[0054] Among them, such as Figure 2-6 As shown, each individual fuel cell stack 2 is equipped with a clamping assembly and at least two sets of locking assemblies 3. The clamping assembly is used to clamp the individual fuel cell stack 2 onto the distribution body 1 along a second orientation, so that the two air inlets and two exhaust outlets of the individual fuel cell stack 2 are sealed and connected to the four air distribution holes of the air distribution hole group 13 in a one-to-one correspondence. The locking assembly 3 is used to lock the individual fuel cell stack 2 and the distribution body 1 into a whole. After the clamping assembly clamps the individual fuel cell stack 2 onto the distribution body 1 along the second orientation, the locking assembly 3 locks the clamping assembly, the individual fuel cell stack 2, and the distribution body 1 into a whole, so that the two air inlets and two exhaust outlets of the individual fuel cell stack 2 are always sealed and connected to the four air distribution holes of the air distribution hole group 13 in a one-to-one correspondence, and facilitates the handling of the fuel cell stack module.

[0055] Among them, such as Figure 2-6As shown, the clamping assembly includes an upper pressure plate 41, an elastic element 42, and a lower pressure plate 43. Along the second orientation, the elastic element 42 is clamped between the upper pressure plate 41 and the lower pressure plate 43, the lower pressure plate 43 is clamped between the elastic element 42 and the individual battery stack 2, and the individual battery stack 2 is clamped between the lower pressure plate 43 and the distribution body 1. When pressure is applied to the upper pressure plate 41 along the second orientation, the pressure applied to the upper pressure plate 41 is transmitted to the lower pressure plate 43 through the elastic element 42, and then to the individual fuel cell stack 2 by the lower pressure plate 43, so as to press the individual fuel cell stack 2 tightly against the distribution body 1 along the second orientation; secondly, this arrangement makes the pressure applied to the individual fuel cell stack 2 along the second orientation a surface force, which can effectively improve the uniformity of the force on the individual fuel cell stack 2; secondly, the elastic element 42 can also compensate for the thermal stress of the individual fuel cell stack 2, so that the thermal stress distribution of the individual fuel cell stack 2 is uniform, thereby further improving the working performance and service life of the individual fuel cell stack 2; thirdly, the fuel cell stack module in this embodiment is a flat fuel cell stack module, which can further make the thermal stress distribution of each individual fuel cell stack 2 uniform and make the thermal stress of each individual fuel cell stack 2 small, thereby further improving the working performance and service life of each individual fuel cell stack 2.

[0056] Optionally, such as Figure 2-4 As shown, there are at least two elastic elements 42, which are spaced apart and sandwiched between the upper pressure plate 41 and the lower pressure plate 43. This can further improve the uniformity of force distribution on the individual fuel cell stack 2.

[0057] Further optional, such as Figure 2-5 As shown, at least two elastic elements 42 are arrayed and located in the central region of the lower pressure plate 43. This can further improve the uniformity of force distribution on the individual fuel cell stack 2.

[0058] In this embodiment, as Figure 2-5 As shown, the elastic element 42 is exemplarily configured as a spring. In other embodiments, the elastic element 42 may also be made of an elastic material such as rubber. In this embodiment, six springs are exemplarily arranged in an array, all located in the central region of the lower pressure plate 43.

[0059] Further optional, such as Figure 2-6 As shown, along the second orientation, a guide post 431 protrudes from the end face of the lower pressure plate 43 near the upper pressure plate 41. The upper pressure plate 41 has a guide hole extending along the second orientation. The elastic element 42 is sleeved on the guide post 431, and the guide post 431 is slidably inserted into the guide hole. The guide post 431 can guide the elastic element 42 to extend and retract along the second orientation, and can also guide the upper pressure plate 41 to move along the second orientation, thereby further improving the uniformity of force distribution of the individual fuel cell stack 2 along the second orientation.

[0060] In this embodiment, as Figure 2-6As shown, an exemplary configuration is provided with six guide posts 431, and the six guide posts 431 and six elastic elements 42 are configured in a one-to-one correspondence.

[0061] Specifically, such as Figure 2-6 As shown, along the second orientation, the end face of the lower pressure plate 43 near the individual fuel cell stack 2 is the first end face, and the end face of the individual fuel cell stack 2 near the lower pressure plate 43 is the second end face. Optionally, the first end face and the second end face have the same shape and are aligned around the perimeter. This can further improve the uniformity of force distribution on the individual fuel cell stack 2. In other embodiments, the orthographic projection of the first end face can also be configured to completely cover the second end face along the second orientation.

[0062] Optionally, such as Figure 2 and Figure 3 As shown, the clamping assembly also includes a first insulating pad 44, which is sandwiched between the lower pressure plate 43 and the individual fuel cell stack 2 along a second orientation, so as to insulate the individual fuel cell stack 2 from the lower pressure plate 43.

[0063] Specifically, such as Figure 2 and Figure 3 As shown, along the second orientation, the end face of the first insulating pad 44 closest to the individual fuel cell stack 2 is the third end face. Optionally, the third end face and the second end face have the same shape and are aligned around the perimeter. This can further improve the uniformity of force distribution on the individual fuel cell stack 2. In other embodiments, the orthographic projection of the third end face along the second orientation can also be configured to completely cover the second end face.

[0064] Optionally, such as Figure 2 As shown, the clamping assembly also includes a second insulating pad 45, which is sandwiched between the individual fuel cell stack 2 and the distribution body 1 along a second orientation. The second insulating pad 45 has at least two through-hole groups extending along the second orientation. Each of the at least two through-hole groups corresponds to one of the at least two gas distribution hole groups 13. The four through-holes of each through-hole group are connected to the four gas distribution holes of each gas distribution hole group 13. The four through-holes of each through-hole group are also sealed to the two air inlets and two exhaust outlets of the individual fuel cell stack 2. This arrangement allows for insulation between the individual fuel cell stack 2 and the distribution body 1. Furthermore, it enables the air feed gas distribution hole 131 to be sealed to the air inlet of the individual fuel cell stack 2, the fuel gas gas distribution hole 132 to be sealed to the fuel gas inlet of the individual fuel cell stack 2, the exhaust gas gas distribution hole 133 to be sealed to the exhaust gas outlet of the individual fuel cell stack 2, and the exhaust gas gas distribution hole 134 to be sealed to the exhaust gas outlet of the individual fuel cell stack 2.

[0065] Optionally, the second insulating pad 45 is made of an elastic insulating material. This allows the second insulating pad 45 to undergo elastic deformation when the individual fuel cell stack 2 is pressed against the distribution body 1 along the second orientation, thus sealing the air feedstock distribution port 131 with the air inlet of the individual fuel cell stack 2, the fuel gas distribution port 132 with the fuel gas inlet of the individual fuel cell stack 2, the exhaust gas distribution port 133 with the exhaust gas outlet of the individual fuel cell stack 2, and the exhaust gas distribution port 134 with the exhaust gas outlet of the individual fuel cell stack 2. It is understood that the second insulating pad 45 has a sealing function. In other embodiments, for each through-hole in the through-hole group, a first sealing ring may be provided between the second insulating pad 45 and the distribution body 1, and a second sealing ring may be provided between the second insulating pad 45 and the individual fuel cell stack 2, with both the first and second sealing rings surrounding the outer periphery of the through-hole. It can also achieve sealed connection between the air feed gas distribution port 131 and the air inlet of the individual fuel cell stack 2, sealed connection between the gas feed gas distribution port 132 and the gas inlet of the individual fuel cell stack 2, sealed connection between the air exhaust gas distribution port 133 and the air exhaust gas outlet of the individual fuel cell stack 2, and sealed connection between the gas exhaust gas distribution port 134 and the gas exhaust gas outlet of the individual fuel cell stack 2.

[0066] Specifically, in this embodiment, as Figure 2-5 As shown, the locking assembly 3 includes a bolt 31 and a nut 32. The bolt 31 passes through the distribution body 1 and the upper pressure plate 41 and is threadedly connected to the nut 32. This allows the locking assembly, the individual fuel cell stack 2, and the distribution body 1 to be locked together as a whole. Secondly, this arrangement allows the individual fuel cell stack 2 to be detached by loosening the nut 32 when any individual fuel cell stack 2 fails and needs repair or replacement, facilitating the installation, removal, and replacement of the individual fuel cell stack 2, reducing maintenance costs. Furthermore, as... Figure 4 and Figure 5 As shown, if a faulty individual fuel cell stack 2 requires prolonged maintenance, tightening the nut 32 will press the clamping assembly against the distribution body 1, sealing the gas distribution port group 13 at that location. This allows the distribution body 1 and other individual fuel cell stacks 2 to operate normally, further improving the performance of the fuel cell stack module. Furthermore, as... Figure 4 and Figure 5 As shown, if it is necessary to adjust the power of the fuel cell module by removing part of the individual fuel cell stack 2, the clamping assembly can be pressed against the distribution body 1 by tightening the nut 32 to seal the gas distribution hole group 13 corresponding to the position of the removed individual fuel cell stack 2, thereby further improving the working performance of the fuel cell module.

[0067] More specifically, such as Figure 1As shown, the distribution plate is provided with a connection hole 14. Preferably, the connection hole 14 includes a first sub-hole and a second sub-hole that are connected to each other. The central axes of the first sub-hole and the second sub-hole are collinear. The diameter of the first sub-hole is larger than the diameter of the second sub-hole. The first sub-hole is located away from the individual fuel cell stack 2 along a second orientation relative to the second sub-hole. Figure 2-5 As shown, bolt 31 passes through the first sub-hole, the second sub-hole, and the upper pressure plate 41 in sequence and is threadedly connected to nut 32, so that the head of bolt 31 is accommodated in the first sub-hole. This allows the distribution body 1 to be stably supported on the supported surface along the second orientation. In other embodiments, bolt 31 may also be arranged to pass through the connecting hole 14 and the upper pressure plate 41 in sequence and be threadedly connected to nut 32, so that the head of bolt 31 abuts against the end face of the distribution body 1 away from the individual fuel cell stack 2 along the second orientation. In other embodiments, bolt 31 may also be arranged to pass through the upper pressure plate 41 and the connecting hole 14 in sequence and be threadedly connected to nut 32. It is understood that other types of locking components 3 may also be used, as long as they can detachably lock the clamping component, the individual fuel cell stack 2, and the distribution body 1 into a whole.

[0068] Optionally, in this embodiment, as Figure 2-5 As shown, the two poles 21 of a single fuel cell stack 2 are located on opposite sides of the single fuel cell stack 2 along the first orientation. This facilitates the series or parallel connection of the individual fuel cell stacks 2 of the fuel cell stack module according to actual operating requirements. In other embodiments, the two poles 21 of a single fuel cell stack 2 may also be located on one side of the single fuel cell stack 2 along the first orientation.

[0069] Optionally, the number of fuel cell stack modules is at least two, and the at least two fuel cell stack module arrays are distributed. Specifically, a support frame is needed to support all fuel cell stack modules to ensure the distribution of the fuel cell stack module arrays. The specific structure of the support frame is prior art and will not be described in detail here. Figure 6 As shown, an exemplary configuration is provided in which twenty-five fuel cell stack modules are distributed along a first directional and a second directional array.

[0070] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. 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 this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A distribution structure, characterized in that, The system includes a distribution body (1), within which a distribution channel group is formed. The distribution channel group includes two intake direct current channels (11) and two exhaust direct current channels (12) extending in the same direction. Along the extension direction, the extension lengths of the two intake direct current channels (11) and the two exhaust direct current channels (12) are the same. The two intake direct current channels (11) and the two exhaust direct current channels (12) are distributed along a first directional interval. Along the extension direction, the two intake direct current channels (11) of the distribution channel group penetrate the first side of the distribution body (1) to form two intake inlets and neither penetrates the second side of the distribution body (1). The two exhaust direct current channels (12) of the distribution channel group penetrate the second side of the distribution body (1) to form two exhaust outlets and neither penetrates the first side of the distribution body (1). The air distribution channel group is provided with at least two air distribution hole groups (13) spaced apart along the extension direction; each air distribution hole group (13) includes four air distribution holes located on the same straight line along the first orientation and passing through one side wall of the distribution body (1) along the second orientation, and the four air distribution holes are directly connected to the two intake direct channels (11) and two exhaust direct channels (12) of the air distribution channel group; the first orientation, the second orientation and the extension direction are perpendicular to each other.

2. The allocation structure according to claim 1, characterized in that, The two intake direct current channels (11) are respectively the air feed gas intake channel (111) and the gas feed gas intake channel (112), the two exhaust direct current channels (12) are respectively the air exhaust gas exhaust channel (121) and the gas exhaust gas exhaust channel (122), and the four gas distribution holes are respectively the air feed gas distribution hole (131), the gas feed gas distribution hole (132), the air exhaust gas distribution hole (133), and the gas exhaust gas distribution hole (134). The air feed gas intake channel (111) is directly connected to the air feed gas distribution hole (131), the gas feed gas intake channel (112) is directly connected to the gas feed gas distribution hole (132), the air exhaust gas exhaust channel (121) is directly connected to the air exhaust gas distribution hole (133), and the gas exhaust gas exhaust channel (122) is directly connected to the gas exhaust gas distribution hole (134). Along the first orientation, the distance between the air feedstock distribution port (131) and the air exhaust distribution port (133) is equal to the distance between the fuel gas distribution port (132) and the fuel gas exhaust distribution port (134); and / or, along the extension direction, the orthographic projections of any two cross sections on the air feedstock inlet channel (111) completely coincide, the orthographic projections of any two cross sections on the fuel gas inlet channel (112) completely coincide, the orthographic projections of any two cross sections on the air exhaust channel (121) completely coincide, the orthographic projections of any two cross sections on the fuel gas exhaust channel (122) completely coincide, the cross-sectional area of ​​the air feedstock inlet channel (111) is equal to the cross-sectional area of ​​the air exhaust channel (121), and the cross-sectional area of ​​the fuel gas inlet channel (112) is equal to the cross-sectional area of ​​the fuel gas exhaust channel (122).

3. The allocation structure according to any one of claims 1-2, characterized in that, The number of the air distribution channel groups is at least two, and the at least two air distribution channel groups are distributed along the first directional interval.

4. A fuel cell stack module, characterized in that, The distribution structure includes the distribution structure according to any one of claims 1-3, wherein the distribution structure is provided with at least two individual electric stacks (2), the at least two individual electric stacks (2) are arranged in a one-to-one correspondence with at least two gas distribution hole groups (13), and the two air inlets and two exhaust outlets of the individual electric stacks (2) are connected in a one-to-one correspondence with the four gas distribution holes of the gas distribution hole groups (13).

5. The fuel cell stack module according to claim 4, characterized in that, Each of the individual fuel cell stacks (2) is equipped with a clamping assembly and at least two sets of locking assemblies (3); the clamping assembly is used to clamp the individual fuel cell stack (2) against the distribution body (1) along the second orientation, so that the two air inlets and two exhaust outlets of the individual fuel cell stack (2) are sealed and connected to the four air distribution holes of the air distribution hole group (13) in a one-to-one correspondence; the locking assembly (3) is used to lock the clamping assembly, the individual fuel cell stack (2) and the distribution body (1) into a whole.

6. The fuel cell stack module according to claim 5, characterized in that, The clamping assembly includes an upper pressure plate (41), an elastic element (42), and a lower pressure plate (43). Along the second orientation, the elastic element (42) is sandwiched between the upper pressure plate (41) and the lower pressure plate (43), the lower pressure plate (43) is sandwiched between the elastic element (42) and the individual battery stack (2), and the individual battery stack (2) is sandwiched between the lower pressure plate (43) and the distribution body (1).

7. The fuel cell stack module according to claim 6, characterized in that, The clamping assembly further includes a first insulating pad (44) along the second orientation, the first insulating pad (44) being sandwiched between the lower pressure plate (43) and the single-unit stack (2).

8. The fuel cell stack module according to claim 6, characterized in that, The clamping assembly further includes a second insulating pad (45) along the second orientation, the second insulating pad (45) being sandwiched between the individual fuel cell stack (2) and the distribution body (1); the second insulating pad (45) is provided with at least two through-hole groups that extend along the second orientation, the at least two through-hole groups being arranged one-to-one with at least two gas distribution hole groups (13), the four through holes of the through-hole group being connected one-to-one with the four gas distribution holes of the gas distribution hole group (13), and the four through holes of the through-hole group also being sealed and connected one-to-one with the two air inlets and two exhaust ports of the individual fuel cell stack (2).

9. The fuel cell stack module according to claim 6, characterized in that, Along the second orientation, a guide post (431) is protruding from the end face of the lower pressure plate (43) near the upper pressure plate (41). The upper pressure plate (41) is provided with a guide hole that passes through along the second orientation. The elastic element (42) is sleeved on the guide post (431), and the guide post (431) is slidably inserted into the guide hole.

10. The fuel cell stack module according to any one of claims 4-9, characterized in that, The two poles (21) of the single-unit fuel cell stack (2) are both located on one side of the single-unit fuel cell stack (2) along the first orientation; or, the two poles (21) of the single-unit fuel cell stack (2) are located on both sides of the single-unit fuel cell stack (2) in a one-to-one correspondence along the first orientation.

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