A hydrogen fuel cell power generation device

Abstract

The present invention relates to the technical field of hydrogen fuel cells, and discloses a hydrogen fuel cell power generation device, including a connecting bracket, on which a hydrogen fuel cell body, a cooling system, a gas supply system, a liquid infusion system and a liquid supply system are arranged; a variable cooling mechanism, the variable cooling mechanism including a plurality of groups of second water-cooling plates staggered with the single cells, and a water-cooling pipe is installed in the second water-cooling plate, and a plurality of groups of first heat dissipation fins are also installed on the water-cooling pipe; when the single cells in the battery box are partially overheated, the variable cooling mechanism cools down the overheated single cells. When a local single cell is overheated, the variable cooling mechanism can selectively cool down the overheated single cell separately, control the temperature of the single cell, and avoid damage to the single cell when it is in an overheated state and a high-load state for a long time, thereby affecting its performance and life.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and more particularly to a hydrogen fuel cell power generation device. Background Art

[0002] As a clean and efficient energy conversion technology, hydrogen fuel cells have received widespread attention in recent years. Hydrogen fuel cells convert hydrogen and oxygen into electrical energy through electrochemical reactions and are mainly used in transportation, portable devices and stationary power generation. Compared with traditional fuel power generation methods, hydrogen fuel cells have the advantages of zero emissions, low operating noise and high energy conversion efficiency.

[0003] When the existing hydrogen fuel cell is running for a long time, the internal single cell group may overheat locally, which has a significant impact on the performance and life of the battery. In the existing technology, the operation of hydrogen fuel cells depends on the electrochemical reaction of hydrogen and oxygen. If the reaction rate of some areas of the battery is faster than other areas, more heat will be generated in the local area, causing overheating.

[0004] In addition, changes in external ambient temperature will also affect the operation of the fuel cell. In a high temperature environment, it is difficult for the cooling system to maintain the optimal operating temperature of the battery, resulting in increased local overheating. If the local overheating problem is not effectively controlled, the cycle life of the battery will be shortened. Long-term high temperature environment will cause imbalance in the chemical reaction inside the battery, reduce the output power of the hydrogen fuel cell, and may even cause irreversible damage to the battery. Summary of the invention

[0005] The present invention provides a hydrogen fuel cell power generation device to solve the technical problem in the related art that when a hydrogen fuel cell is running for a long time, local overheating of the internal single cell group may occur, and this phenomenon has a significant impact on the performance and life of the battery.

[0006] The present invention provides a hydrogen fuel cell power generation device, comprising a connecting bracket, on which a hydrogen fuel cell body, a cooling system, a gas supply system, a liquid infusion system and a liquid supply system are arranged; the hydrogen fuel cell body comprises a battery box mounted on the connecting bracket, and a cover plate is arranged on the battery box, a plurality of groups of single cells are arranged in the battery box, a first liquid inlet and a first liquid outlet are mounted on the battery box, liquid supply pipes are mounted at positions corresponding to the first liquid inlet and the first liquid outlet in the battery box, and two groups of the liquid supply pipes are respectively connected to the inside of the first liquid inlet and the first liquid outlet; a variable cooling mechanism, the variable cooling mechanism comprises a plurality of groups of second water cooling plates staggered with the single cells, a water cooling pipe is mounted in the second water cooling plate, a plurality of groups of first heat dissipation fins are further mounted on the water cooling pipes, and first heat conduction plates are further arranged on both sides of the first heat dissipation fins away from the water cooling pipes; when the single cells in the battery box are locally overheated, the variable cooling mechanism performs a cooling treatment on the overheated single cells.

[0007] As a further optimization scheme of the present invention, the liquid supply system includes a liquid storage tank installed on a connecting bracket, and the liquid storage tank is equipped with a second liquid inlet and a second liquid outlet; the infusion system is provided with a second liquid inlet end and a second liquid outlet end; the second liquid outlet end of the infusion system and the first liquid inlet of the battery box are connected by a first connecting pipe; the second liquid inlet end of the infusion system and the second liquid outlet of the liquid storage tank are connected by a second connecting pipe; the first liquid outlet of the battery box and the second liquid inlet of the liquid storage tank are connected by a third connecting pipe.

[0008] As a further optimization solution of the present invention, second heat dissipation fins are arranged on both upper and lower sides of the first heat dissipation fins, and the second heat dissipation fins are fixedly connected to the first heat conducting plate.

[0009] As a further optimization solution of the present invention, a movable cavity for the first heat dissipation fins to move is formed between every two groups of second heat dissipation fins, and a first spring is installed between the movable cavity and the first heat dissipation fins.

[0010] As a further optimization scheme of the present invention, partitions are installed on the two groups of the first heat conduction plates, and connecting rods are provided between the partitions, tilting blocks are installed on the connecting rods, and inclined grooves compatible with the tilting blocks are opened on the two groups of the partitions, and a first lifting frame is also installed on the connecting rods.

[0011] As a further optimization scheme of the present invention, the variable cooling mechanism also includes a plurality of heat storage boxes staggered with the single cells, and a second heat conducting plate is installed on the heat storage box, the second heat conducting plate is in contact with the single cells and is used to conduct the heat on the single cells to the outside, and an air outlet pipe is installed on the heat storage box, and an air bag is installed on the air outlet pipe.

[0012] As a further optimization scheme of the present invention, a limit box is provided outside the airbag, and the limit box is installed on the heat storage box. A top plate is provided inside the limit box, and a top rod is installed on the top plate. A second lifting frame is installed on the top rod, and the second lifting frame is fixedly connected to the first lifting frame.

[0013] As a further optimization solution of the present invention, the push rod is slidably connected to the inside of the limit box, and a second spring is installed between the limit box and the top plate.

[0014] As a further optimization scheme of the present invention, the two groups of ports of the water cooling pipe extend through the second water cooling plate to the outside of the second water cooling plate, one group of liquid supply pipes is connected to one group of ports of the water cooling pipe through a liquid inlet pipe, and the other group of liquid supply pipes is connected to the other group of ports of the water cooling pipe through a liquid outlet pipe.

[0015] As a further optimization scheme of the present invention, an opening and closing pipe is installed on the liquid inlet pipe, and the opening and closing pipe is connected with the inside of the liquid inlet pipe, a sealing groove is opened in the opening and closing pipe, a sealing column is slidably connected in the sealing groove, a connecting rod is installed on the sealing column, and the connecting rod passes through the opening and closing pipe and is fixedly connected to the second lifting frame, and a one-way valve is installed on the liquid outlet pipe.

[0016] The beneficial effect of the present invention is that when a local single cell battery is overheated, the variable cooling mechanism can selectively cool the overheated single cell battery individually, control the temperature of the single cell battery, and avoid damage to the single cell battery when it is in an overheated state and a high-load state for a long time, thereby affecting its performance and life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the exploded three-dimensional structure of the hydrogen fuel cell body of the present invention;

[0020] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the hydrogen fuel cell body of the present invention;

[0021] Figure 5 The present invention Figure 4 A schematic diagram of a three-dimensional cross-sectional structure;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the variable cooling mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of a partial three-dimensional structure of the variable cooling mechanism of the present invention;

[0024] Figure 8 It is a partial three-dimensional cross-sectional structural schematic diagram of the variable cooling mechanism of the present invention;

[0025] Fig. 9 The present invention Figure 8 A magnified view of the structure at center;

[0026] Fig.10 It is a cross-sectional schematic diagram of the connection structure of the first heat dissipation fin and the second heat dissipation fin of the present invention.

[0027] In the figure: 100, connecting bracket; 200, hydrogen fuel cell body; 201, battery box; 202, cover plate; 203, first liquid inlet; 204, first liquid outlet; 205, single battery; 206, first water cooling plate; 207, liquid supply pipe; 208, second water cooling plate; 209, water cooling pipe; 210, first heat dissipation fin; 211, first heat conduction plate; 2111, second heat dissipation fin; 2112, first spring; 2113, partition; 2114, connecting rod; 2115, tilting block; 2116, first lifting frame; 212, heat storage box; 2121, second heat conduction plate; 2 13. air outlet pipe; 214. limit box; 215. air bag; 216. top plate; 217. push rod; 218. second spring; 219. second lifting frame; 220. liquid inlet pipe; 2201. opening and closing pipe; 2202. blocking column; 2203. connecting rod; 221. liquid outlet pipe; 222. one-way valve; 300. cooling system; 400. gas supply system; 500. infusion system; 600. liquid supply system; 601. liquid storage tank; 602. second liquid inlet; 603. second liquid outlet; 700. first connecting pipeline; 800. second connecting pipeline; 900. third connecting pipeline. DETAILED DESCRIPTION

[0028] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0029] According to the attached Figure 1 As shown, a hydrogen fuel cell power generation device includes a connecting bracket 100, which is used to support and protect the internal components of the hydrogen fuel cell power generation device. The connecting bracket 100 is provided with a hydrogen fuel cell body 200, a cooling system 300, a gas supply system 400, an infusion system 500 and a liquid supply system 600.

[0030] According to the attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, the hydrogen fuel cell body 200 includes a battery box 201 installed on the connecting bracket 100, and a cover plate 202 is provided on the battery box 201. During the assembly process, the battery box 201 and the cover plate 202 are fixed by bolts; a plurality of groups of single cells 205 are arranged in the battery box 201, and a first water cooling plate 206 is provided on the single cell 205. During the operation of the single cell 205, the first water cooling plate 206 is used to dissipate heat for the single cell 205, so that the single cell 205 is in a stable state.

[0031] Specifically, a first liquid inlet 203 and a first liquid outlet 204 are installed on the battery box 201; liquid supply pipes 207 are installed at positions corresponding to the first liquid inlet 203 and the first liquid outlet 204 in the battery box 201, and the two groups of liquid supply pipes 207 are respectively connected to the inside of the first liquid inlet 203 and the first liquid outlet 204; a first liquid inlet end and a first liquid outlet end are provided on the first water-cooling plate 206, the first liquid inlet end on the first water-cooling plate 206 is connected to one group of liquid supply pipes 207, and the first liquid outlet end on the first water-cooling plate 206 is connected to the other group of liquid supply pipes 207.

[0032] In addition, the liquid supply system 600 includes a liquid storage tank 601 installed on the connecting bracket 100, and the liquid storage tank 601 is installed with a second liquid inlet 602 and a second liquid outlet 603; the infusion system 500 is provided with a second liquid inlet end and a second liquid outlet end; the infusion system 500 is a water pump.

[0033] It should be noted that the second liquid outlet of the infusion system 500 and the first liquid inlet 203 of the battery box 201 are connected via a first connecting pipe 700; the second liquid inlet of the infusion system 500 and the second liquid outlet 603 of the liquid storage tank 601 are connected via a second connecting pipe 800; and the first liquid outlet 204 of the battery box 201 and the second liquid inlet 602 of the liquid storage tank 601 are connected via a third connecting pipe 900.

[0034] It should be understood that when the hydrogen fuel cell body 200 is in operation, the first water cooling plate 206 is supplied with liquid through the liquid infusion system 500 and the liquid supply system 600, thereby controlling the temperature of the hydrogen fuel cell body 200 to ensure that it operates in the best working state.

[0035] It should be explained in detail that when the water pump is working, the coolant in the liquid storage tank 601 is extracted through the second connecting pipe 800, input to the first liquid inlet 203 through the first connecting pipe 700, and input to the first water-cooled plate 206 through the liquid supply pipe 207, and the single battery 205 is heat-dissipated by the first water-cooled plate 206; when the coolant is discharged from the first water-cooled plate 206, it is discharged to the first liquid outlet 204 through another set of liquid supply pipes 207, and is connected to the second liquid inlet 602 through the third connecting pipe 900, and the coolant is discharged into the liquid storage tank 601.

[0036] According to the attached Figure 3 , Attachment Figure 4 and attached Figure 5 As shown, multiple groups of variable cooling mechanisms are provided in the battery box 201, and the multiple groups of variable cooling mechanisms and multiple groups of single cells 205 are arranged in a staggered manner. That is to say, when the single cells 205 in the battery box 201 are partially overheated, the variable cooling mechanism can quickly cool down the overheated single cells 205, thereby ensuring the stability of the operation of the internal single cells 205, thereby solving the problem that under high load conditions, the reaction rate of hydrogen and oxygen is fast, the energy generated by the reaction will also increase, and then the heat will increase, causing the single cells 205 to be damaged when they are in an overheated state and a high load state for a long time, thereby affecting their performance and life.

[0037] According to the attached Figure 6 , Attachment Figure 7 , Attachment Figure 8 and attached Fig.10 As shown, the variable cooling mechanism includes a plurality of second water-cooling plates 208 staggered with the single cells 205, and a water-cooling tube 209 is installed in the second water-cooling plate 208, and two groups of ports of the water-cooling tube 209 pass through the second water-cooling plate 208 and extend to the outside of the second water-cooling plate 208. The water-cooling tube 209 is arranged in an S-shaped structure. Through the arrangement of the second water-cooling tube 209, it is convenient to cool down the single cell 205, control the temperature of the single cell 205, make the single cell 205 in a stable state during operation, and avoid the single cell 205 from being damaged when it is in an overheated state or a high-load state for a long time, thereby affecting its performance and life.

[0038] Specifically, a plurality of first heat dissipation fins 210 are installed on the water cooling tube 209, and first heat conducting plates 211 are provided on both sides of the first heat dissipation fins 210 away from the water cooling tube 209. The first heat conducting plates 211 are attached to the outer wall of the single cell 205 to conduct the heat accumulated in the single cell 205 outward, and the first heat dissipation fins 210 and the water cooling tube 209 cooperate to cool the accumulated heat, so as to keep the fuel cell within an appropriate operating temperature range, which helps to improve the efficiency of its electrochemical reaction and thus improve the overall power output.

[0039] Further, second heat dissipation fins 2111 are provided on both upper and lower sides of the first heat dissipation fins 210, and the second heat dissipation fins 2111 are fixedly connected to the first heat conducting plate 211, and a movable cavity for the first heat dissipation fins 210 to move is formed between each two groups of second heat dissipation fins 2111, and a first spring 2112 is installed between the movable cavity and the first heat dissipation fins 210. When the first heat conducting plate 211 is controlled to perform telescopic movement, the second heat dissipation fins 2111 can move outside the first heat dissipation fins 210, thereby controlling the first heat conducting plate 211 to perform telescopic movement.

[0040] Furthermore, by providing the first spring 2112, when the first heat conducting plate 211 is expanded outward, the first spring 2112 generates elastic deformation, thereby having a restoring force; when the first heat conducting plate 211 is contracted inward, the restoring force of the first spring 2112 assists the first heat conducting plate 211 in resetting, thereby making it possible for a heat discharge channel to be left between the first heat conducting plate 211 and the single battery 205 without separately dissipating heat for the single battery 205, so that the side of the single battery 205 can dissipate heat by itself.

[0041] In addition, partitions 2113 are installed on the two groups of first heat conducting plates 211, and connecting rods 2114 are provided between the partitions 2113. Inclined blocks 2115 are installed on the connecting rods 2114, and inclined grooves adapted to the inclined blocks 2115 are provided on the two groups of partitions 2113. When the inclined blocks 2115 move upward, the inclined grooves are squeezed by the inclined blocks 2115, so that the partitions 2113 move to both sides, thereby driving the first heat conducting plates 211 to move synchronously, so that the two groups of first heat conducting plates 211 are expanded outward. Among them, a first lifting frame 2116 is also installed on the connecting rod 2114, which is used to push the connecting rod 2114 upward or downward, thereby driving the connecting rod 2114 to move, so that the first heat conducting plates 211 are expanded or contracted, and the overheated single battery 205 is individually heat-dissipated.

[0042] It should be noted here that when a single cell 205 in a part of the battery box 201 is overheated, the first lifting frame moves upward, thereby driving the connecting rod 2114 to move synchronously, so that the connecting rod 2114 drives the tilting block 2115 to move synchronously.

[0043] When the tilting block 2115 moves, the tilting block 2115 contacts the edge of the tilting groove, and the tilting block 2115 presses the tilting groove to both sides, so that the partition 2113 drives the first heat conducting plate 211 away from the first heat dissipating fin 210, and the first heat conducting plate 211 is unfolded.

[0044] When the first heat conducting plate 211 is in the unfolded state, the first heat conducting plate 211 contacts the outer wall of the single battery 205 that needs to dissipate heat, and the first heat dissipating fins 210 and the second heat dissipating fins 2111 are cooled and dissipated through the water cooling tube 209, thereby playing the role of dissipating heat for the single battery 205 separately.

[0045] According to the attached Figure 7 , Attachment Figure 8 and attached Fig. 9 As shown, the variable cooling mechanism also includes a plurality of heat storage boxes 212 staggered with the single cells 205, and a second heat conducting plate 2121 is installed on the heat storage box 212, the second heat conducting plate 2121 is in contact with the single cells 205, and is used to conduct the heat on the single cells 205 outwardly, so that the heat is transferred to the heat storage box 212, thereby heating the air in the heat storage box 212.

[0046] Specifically, the heat storage box 212 is provided with an air outlet pipe 213, and the air bag 215 is provided on the air outlet pipe 213. When the second heat conducting plate 2121 transfers the high temperature heat in the single battery 205 to the heat storage box 212, the air in the heat storage box 212 is heated, so that the air expands and enters the air bag 215.

[0047] Among them, a limit box 214 is provided outside the airbag 215, and the limit box 214 is installed on the heat storage box 212. A top plate 216 is provided inside the limit box 214, and a top rod 217 is installed on the top plate 216. A second lifting frame 219 is installed on the top rod 217, and the second lifting frame 219 is fixedly connected to the first lifting frame 2116.

[0048] It should be noted that, through the setting of the limit box 214, the airbag 215 can lift the top plate 216 upward under the limiting effect of the limit box 214, prompting the top rod 217 to move synchronously, thereby driving the second lifting frame 219 to move synchronously, thereby enabling the first lifting frame 2116 to drive the connecting rod 2114 to move.

[0049] Furthermore, the top rod 217 is slidably connected to the inside of the limit box 214, and a second spring 218 is installed between the limit box 214 and the top plate 216. Through the setting of the second spring 218, when the airbag 215 is reset, the second spring 218 assists the top plate 216 to reset synchronously, thereby facilitating the variable cooling mechanism to assist in heat dissipation processing again.

[0050] It should be noted that, by setting up multiple groups of airbags 215, the real-time thermal conditions of multiple groups of single cells 205 can be monitored synchronously. When a single cell 205 is overheated, the heat dissipation of the second heat conduction plate 2121 and the cooperation of the airbags 215 can make it possible to adaptively adjust the temperature of the single cell 205 internally, so that the variable cooling mechanism can selectively cool the single cell 205 to avoid local overheating.

[0051] According to the attached Fig. 9 As shown, one group of liquid supply pipes 207 is connected to one group of ports of the water cooling pipe 209 through a liquid inlet pipe 220, and another group of liquid supply pipes 207 is connected to another group of ports of the water cooling pipe 209 through a liquid outlet pipe 221. By setting the liquid inlet pipe 220 and the liquid outlet pipe 221, the water cooling liquid can be input and output, so that the water cooling liquid flows in the water cooling pipe 209, and the single battery 205 is fully cooled.

[0052] Among them, an opening and closing pipe 2201 is installed on the liquid inlet pipe 220, and the opening and closing pipe 2201 is connected with the inside of the liquid inlet pipe 220. A blocking groove is opened in the opening and closing pipe 2201, and a blocking column 2202 is slidably connected in the blocking groove. When the blocking column 2202 and the blocking groove are in a clamping and closed state, the coolant in the liquid supply pipe 207 cannot enter the opening and closing pipe 2201; when the clamping and closing state between the blocking column 2202 and the blocking groove is released, the coolant in the liquid supply pipe 207 can enter the opening and closing pipe 2201, and then enter the water cooling pipe 209 to compensate for the heat dissipation of the single battery 205, thereby improving the stability of the operation of the hydrogen fuel cell main body 200.

[0053] It should be noted that a connecting rod 2203 is installed on the blocking column 2202, and the connecting rod 2203 passes through the opening and closing pipe 2201 and is fixedly connected to the second lifting frame 219. When the second lifting frame 219 moves up and down, the connecting rod 2203 moves up and down synchronously, thereby closing and opening the blocking groove, which is convenient for selective heat dissipation of the local single battery 205.

[0054] In addition, a one-way valve 222 is installed on the liquid outlet pipe 221. Through the setting of the one-way valve 222, the coolant in the water cooling pipe 209 can be output, while the coolant flowing from the liquid supply pipe 207 to the first liquid outlet 204 cannot be input into the water cooling pipe 209.

[0055] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A hydrogen fuel cell power generation device, characterized in that: include: A connecting bracket (100), wherein the connecting bracket (100) is provided with a hydrogen fuel cell body (200), a cooling system (300), a gas supply system (400), a liquid infusion system (500), and a liquid supply system (600); The hydrogen fuel cell body (200) comprises a battery box (201) mounted on a connection bracket (100), and a cover plate (202) is provided on the battery box (201); a plurality of groups of single batteries (205) are provided in the battery box (201); a first liquid inlet (203) and a first liquid outlet (204) are installed on the battery box (201); liquid supply pipes (207) are installed at positions corresponding to the first liquid inlet (203) and the first liquid outlet (204) in the battery box (201); and two groups of liquid supply pipes (207) are respectively connected to the inside of the first liquid inlet (203) and the first liquid outlet (204); A variable cooling mechanism, the variable cooling mechanism comprising a plurality of groups of second water cooling plates (208) arranged in an alternating manner with the single cells (205), a water cooling tube (209) being installed in the second water cooling plates (208), a plurality of groups of first heat dissipation fins (210) being installed on the water cooling tube (209), and first heat conduction plates (211) being provided on both sides of the first heat dissipation fins (210) away from the water cooling tube (209); When a single battery (205) in the battery box (201) is locally overheated, the variable cooling mechanism performs a cooling process on the overheated single battery (205); Second heat dissipation fins (2111) are provided on both upper and lower sides of the first heat dissipation fin (210), and the second heat dissipation fins (2111) are fixedly connected to the first heat conduction plate (211); An active cavity for the first heat dissipation fins (210) to move is formed between every two groups of second heat dissipation fins (2111), and a first spring (2112) is installed between the active cavity and the first heat dissipation fins (210); Partitions (2113) are installed on the two groups of the first heat conducting plates (211), and connecting rods (2114) are provided between the partitions (2113), and tilting blocks (2115) are installed on the connecting rods (2114). Inclined grooves matching the tilting blocks (2115) are provided on the two groups of the partitions (2113), and a first lifting frame (2116) is also installed on the connecting rods (2114).

2. A hydrogen fuel cell power generation device according to claim 1, characterized in that: The liquid supply system (600) comprises a liquid storage box (601) mounted on the connection bracket (100), and the liquid storage box (601) is provided with a second liquid inlet (602) and a second liquid outlet (603); the liquid infusion system (500) is provided with a second liquid inlet end and a second liquid outlet end; The second liquid outlet of the infusion system (500) and the first liquid inlet (203) of the battery box (201) are connected via a first connecting pipe (700); the second liquid inlet of the infusion system (500) and the second liquid outlet (603) of the liquid storage box (601) are connected via a second connecting pipe (800); and the first liquid outlet (204) of the battery box (201) and the second liquid inlet (602) of the liquid storage box (601) are connected via a third connecting pipe (900).

3. A hydrogen fuel cell power generation device according to claim 1, characterized in that: The variable cooling mechanism further comprises a plurality of heat storage boxes (212) arranged in an alternating manner with the single cells (205), and a second heat conducting plate (2121) is mounted on the heat storage box (212), the second heat conducting plate (2121) is in contact with the single cells (205) and is used to conduct heat from the single cells (205) outwards, and an air outlet pipe (213) is mounted on the heat storage box (212), and an air bag (215) is mounted on the air outlet pipe (213).

4. A hydrogen fuel cell power generation device according to claim 3, characterized in that: A limit box (214) is provided outside the air bag (215), and the limit box (214) is installed on the heat storage box (212); a top plate (216) is provided inside the limit box (214), and a top rod (217) is installed on the top plate (216); a second lifting frame (219) is installed on the top rod (217), and the second lifting frame (219) is fixedly connected to the first lifting frame (2116).

5. A hydrogen fuel cell power generation device according to claim 4, characterized in that: The top rod (217) is slidably connected to the inside of the limit box (214), and a second spring (218) is installed between the limit box (214) and the top plate (216).

6. A hydrogen fuel cell power generation device according to claim 1, characterized in that: The two groups of ports of the water cooling tube (209) pass through the second water cooling plate (208) and extend to the outside of the second water cooling plate (208), one group of liquid supply tubes (207) is connected to one group of ports of the water cooling tube (209) via a liquid inlet tube (220), and the other group of liquid supply tubes (207) is connected to the other group of ports of the water cooling tube (209) via a liquid outlet tube (221).

7. A hydrogen fuel cell power generation device according to claim 6, characterized in that: The liquid inlet pipe (220) is provided with an opening and closing pipe (2201), and the opening and closing pipe (2201) is communicated with the inside of the liquid inlet pipe (220); a blocking groove is provided in the opening and closing pipe (2201), a blocking column (2202) is slidably connected in the blocking groove, a connecting rod (2203) is provided on the blocking column (2202), and the connecting rod (2203) passes through the opening and closing pipe (2201) and is fixedly connected to the second lifting frame (219); and a one-way valve (222) is provided on the liquid outlet pipe (221).

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