CN215527777U

CN215527777U - Fuel cell stack structure capable of being rapidly and cold started

Info

Publication number: CN215527777U
Application number: CN202121338974.2U
Authority: CN
Inventors: 马洋洋; 王鹏宇
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-01-14
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a fuel cell stack structure capable of being rapidly and cold started, which comprises a mounting frame, wherein a fuel cell body is arranged in an inner cavity of the mounting frame, the fuel cell body is composed of a plurality of single cell components, a first temperature sensor and a controller are respectively arranged on the front end face of one single cell component, and a plurality of groups of heat dissipation long grooves are uniformly arranged at the bottom of the inner cavity of the mounting frame in a penetrating manner. The fuel cell stack structure capable of being rapidly and cold started can avoid the situation that water in a single cell assembly forming a fuel cell body is frozen and blocks a gas channel of a reaction region under a low-temperature condition, the service life of a fuel cell is prolonged, and heat released in the process can heat the single cell assembly, so that the cold start can be rapidly realized; meanwhile, the utility model can realize the rapid installation operation of the fuel cell, shorten the installation time and is beneficial to the improvement of the installation efficiency.

Description

Fuel cell stack structure capable of being rapidly and cold started

Technical Field

The utility model relates to the technical field of fuel cell stacks, in particular to a fuel cell stack structure capable of being rapidly and cold started.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, and is a fourth power generation technology following hydroelectric power generation, thermal power generation, and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel cells use fuel and oxygen as raw materials; meanwhile, no mechanical transmission part is arranged, so that no noise pollution is caused, and the discharged harmful gas is less. However, in the process of using the existing fuel cell at a temperature lower than zero degrees centigrade, water generated inside the fuel cell may be frozen, and since the electrochemical reaction of the proton exchange membrane fuel cell is performed on a water-gas-proton (electron) three-phase interface, when the temperature is lower than zero degree centigrade and the fuel cell is started, the frozen water may block a gas channel of a reaction region, so that the rupture of the proton exchange membrane may affect the performance of the fuel cell. The present invention therefore proposes a fuel cell stack structure capable of rapid cold start.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the deficiencies of the prior art, the present invention provides a fuel cell stack structure capable of fast cold start, which solves the problems set forth in the background art.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a fuel cell pile structure that can cold start fast, includes the mounting bracket, the inner chamber of mounting bracket is provided with the fuel cell body, the fuel cell body has a plurality of monocell subassemblies to constitute, and one of them monocell subassembly's preceding terminal surface is provided with first temperature sensor and controller respectively, all is provided with multiunit heating heat dissipation mechanism on every monocell subassembly, the rear end face of mounting bracket is provided with installation mechanism, the below of mounting bracket is provided with heat dissipation mechanism, heat dissipation mechanism's bottom is provided with four groups of landing legs, and the bottom of every group landing leg all is connected with the base, the bottom of mounting bracket inner chamber evenly runs through and is provided with multiunit heat dissipation elongated slot.

On the basis of the technical scheme, the utility model can be further improved as follows:

further, installation mechanism includes two-way screw rod, the end all cup joints and is fixed with the bearing frame about two-way screw rod, the front side fixedly connected with connecting rod one of bearing frame, and two sets of equal fixed connection of connecting rod are in the rear end face of mounting bracket, the right-hand member of two-way screw rod extends matching bearing frame and fixedly connected with carousel, fixedly connected with grip block on the screw shell.

Further, the top of two-way screw rod is provided with leads positive pole, lead the periphery activity of positive pole and cup jointed two sets of guide rings, and two sets of guide rings respectively with two sets of grip blocks fixed connection, lead two sets of connecting rods of fixedly connected with two sets of connecting rods on the positive pole, and two equal fixed connection of two sets of connecting rods in the rear end face of mounting bracket.

Further, heat dissipation mechanism includes the heat conduction metal covering, the inner chamber of heat conduction metal covering is provided with the electrical heating rod, and one of them is a set of the outer wall of heat conduction metal covering is provided with the spread groove, and the inner chamber of spread groove is provided with second temperature sensor, second temperature sensor's surface and this group the surface of heat conduction metal covering flushes, the top of monocell subassembly evenly is provided with the multiunit preformed hole, and every heat conduction metal covering of group pegs graft respectively and fixes to in the preformed hole inner chamber that matches separately.

Further, heat dissipation mechanism includes the base plate, the equal fixedly connected with pole setting in four corners department at base plate top, evenly run through on the base plate and be provided with the multiunit mounting hole, and the inner chamber of every group mounting hole all is provided with electric fan assembly, four groups the landing leg is connected respectively in the four corners department of base plate bottom.

Furthermore, the electric fan assembly comprises a ventilation pipe, a heat dissipation electric fan is arranged in the inner cavity of the ventilation pipe, a fixing ring is fixedly sleeved on the periphery of the heat dissipation electric fan, and the ventilation pipe is movably inserted into the inner cavity of the mounting hole in the substrate.

Further, solid fixed ring's bottom evenly is connected with the multiunit locating piece, the top of base plate all is provided with rather than the slot that matches with every group locating piece position department of correspondence, and every group locating piece activity grafting respectively to the slot inner chamber that matches separately, solid fixed ring passes through bolt and base plate fixed connection.

Furthermore, the first temperature sensor and the second temperature sensor are electrically connected with the input end of the controller, and the electric heating rod is electrically connected with the output end of the controller.

(III) advantageous effects

The utility model provides a fuel cell stack structure capable of being rapidly and cold started, which has the following beneficial effects:

1. the fuel cell is placed in the inner cavity of the mounting frame, an operator can drive the bidirectional screw to rotate by rotating the rotary table, and then the placed fuel cell is clamped and fixed by the two groups of clamping plates which move in opposite directions, so that the fuel cell can be quickly installed and fixed on the mounting frame, the fuel cell can be quickly installed, the installation time is shortened, and the installation efficiency is improved;

2. the temperature of the external environment of the fuel cell is monitored in real time through the first temperature sensor, when the temperature of the external environment is lower than five ℃, the controller rapidly controls the electric heating rod to be started, and then the heat is uniformly transferred to the inside of the single cell assembly through the heat-conducting metal sleeve, so that the phenomenon that water in the single cell assembly forming the fuel cell body is frozen and blocks a gas channel of a reaction region under the low-temperature condition is avoided, and the service life of the fuel cell is prolonged;

3. the fuel cell body is timely cooled and radiated by the radiating electric fan when the heat generated in the running process of the fuel cell body is generated, so that the fuel cell body can be always cooled and ventilated in the running process, and the fuel cell body is prevented from being damaged by the heat generated in the running process.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the heat dissipation mechanism of FIG. 1;

FIG. 3 is a side view of the mounting mechanism of FIG. 1;

FIG. 4 is a schematic view of the structure of the electric fan assembly of FIG. 2;

FIG. 5 is a schematic structural diagram of the heating and heat dissipating mechanism shown in FIG. 1;

fig. 6 is a schematic structural view of the fixing ring in fig. 5.

In the figure: 1. a mounting frame; 2. a fuel cell body; 3. a heating and heat dissipation mechanism; 4. a first temperature sensor; 5. a controller; 6. a heat dissipation long groove; 7. an installation mechanism; 8. a heat dissipation mechanism; 9. a support leg; 10. a base; 11. a first connecting rod; 12. a bidirectional screw; 13. a threaded sleeve; 14. a clamping plate; 15. a guide rod; 16. a guide ring; 17. a second connecting rod; 18. a bearing seat; 19. a turntable; 20. erecting a rod; 21. a substrate; 22. an electric fan assembly; 25. a vent pipe; 26. a heat-dissipating electric fan; 27. a fixing ring 28 and a positioning block; 29. a heat conductive metal sleeve; 30. an electrical heating rod; 31. a second temperature sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides a fuel cell pile structure that can cold start fast, including mounting bracket 1, the inner chamber of mounting bracket 1 is provided with fuel cell body 2, fuel cell body 2 has a plurality of monocell subassemblies to constitute, one of them monocell subassembly preceding terminal surface is provided with first temperature sensor 4 and controller 5 respectively, all be provided with multiunit heating heat dissipation mechanism 3 on every monocell subassembly, the rear end face of mounting bracket 1 is provided with installation mechanism 7, the below of mounting bracket 1 is provided with heat dissipation mechanism 8, heat dissipation mechanism 8's bottom is provided with four group's landing legs 9, and the bottom of every group landing leg 9 all is connected with base 10, the bottom of the inner chamber of mounting bracket 1 evenly runs through and is provided with multiunit heat dissipation elongated slot 6.

Preferably, the installation mechanism 7 comprises a bidirectional screw 12, the left end and the right end of the bidirectional screw 12 are fixedly sleeved with bearing seats 18, the front side of each bearing seat 18 is fixedly connected with a first connecting rod 11, the two first connecting rods 11 are fixedly connected to the rear end face of the installation frame 1, the right end of the bidirectional screw 12 extends out of the matched bearing seat 18 and is fixedly connected with a turntable 19, and the thread insert 13 is fixedly connected with a clamping plate 14. The fuel cell is placed in the inner cavity of the mounting frame 1, an operator can rotate the rotary disc 19 to drive the bidirectional screw 12 to rotate, and then the fuel cell body 2 which is placed in the rotary disc 19 is clamped and fixed by the two clamping plates 14 which move in opposite directions.

Preferably, the guide rod 15 is arranged above the two-way screw 12, two sets of guide rings 16 are movably sleeved on the periphery of the guide rod 15, the two sets of guide rings 16 are respectively and fixedly connected with the two sets of clamping plates 14, two sets of connecting rods 17 are fixedly connected to the guide rod 15, and the two sets of connecting rods 17 are fixedly connected to the rear end face of the mounting frame 1. The movement of the clamping plate 14 is subjected to the guide treatment through the guide rod 15, so that the clamping plate 14 is prevented from deflecting in the movement process, and the movement stability and smoothness of the clamping plate 14 are guaranteed.

Preferably, the heating and heat dissipating mechanism 3 includes a heat conducting metal sleeve 29, an inner cavity of the heat conducting metal sleeve 29 is provided with an electric heating rod 30, an outer wall of one group of the heat conducting metal sleeve 29 is provided with a connecting groove, an inner cavity of the connecting groove is provided with a second temperature sensor 31, a surface of the second temperature sensor 31 is flush with a surface of the group of the heat conducting metal sleeve 29, multiple groups of preformed holes are uniformly formed in the top of the single cell assembly, and each group of the heat conducting metal sleeves 29 are respectively inserted and fixed into the inner cavities of the preformed holes matched with each other.

Preferably, the heat dissipation mechanism 8 includes a base plate 21, the four corners of the top of the base plate 21 are fixedly connected with vertical rods 20, the base plate 21 is uniformly provided with a plurality of sets of mounting holes in a penetrating manner, an inner cavity of each set of mounting holes is provided with an electric fan assembly 22, and the four sets of support legs 9 are respectively connected to the four corners of the bottom of the base plate 21.

Preferably, the fan assembly 22 includes a ventilation pipe 25, a cooling fan 26 is disposed in an inner cavity of the ventilation pipe 25, a fixing ring 27 is fixedly sleeved on an outer periphery of the cooling fan 26, and the ventilation pipe 25 is movably inserted into an inner cavity of the mounting hole on the base plate 21. The heat generated when the fuel cell body 2 operates is cooled and radiated by the radiation fan 26.

Preferably, the bottom of the fixing ring 27 is uniformly connected with a plurality of groups of positioning blocks 28, slots matched with the top of the base plate 21 are arranged at positions corresponding to the positions of each group of positioning blocks 28, each group of positioning blocks 28 are movably inserted into the inner cavities of the slots matched with each other, and the fixing ring 27 is fixedly connected with the base plate 21 through bolts. Through the positioning function of the slot to the positioning block 28, the fixing ring 27 cannot slide when being fixed by a bolt, so that the fixing ring 27 is convenient to mount.

Preferably, the first temperature sensor 4 and the second temperature sensor 31 are both electrically connected to the input end of the controller 5, and the electric heating rod 30 is electrically connected to the output end of the controller 5. The fuel cell body 2 carries out real-time monitoring to the temperature of the external environment where the fuel cell is located through the first temperature sensor 4, when the external environment temperature is lower than five degrees centigrade, the controller 5 rapidly controls the electric heating rod 30 to be opened, then the heat is uniformly transferred to the inside of the single cell component through the heat conduction metal sleeve 29, the heat released in the process can heat the single cell component until the cold start is successfully realized, the occurrence of the condition that the water in the single cell component is frozen to block the gas channel of the reaction zone under the low-temperature condition is avoided, when the temperature of the liquid in the single cell component is monitored by the second temperature sensor 31 to be heated to forty degrees centigrade, the controller 5 controls the electric heating rod 30 to be closed, and therefore the electric energy is saved.

In conclusion, this fuel cell stack structure that can cold start fast, during the use, place fuel cell in the inner chamber of mounting bracket 1 earlier, operating personnel is through rotating carousel 19 for carousel 19 can drive two-way screw rod 12 and rotate, carries out the centre gripping by two sets of moving in opposite directions's grip block 14 to the fuel cell body 2 of putting into fixedly again. The fuel cell body 2 carries out real-time supervision to the temperature of the external environment that fuel cell locates through first temperature sensor 4, when external environment temperature is less than five degrees centigrade, controller 5 controls electric heating rod 30 to open rapidly, the inside of heat even transfer to the monocell subassembly by heat conduction metal covering 29 again, the heat that the in-process released can heat the monocell subassembly, thereby can realize cold start fast, the condition of having avoided the inside water of monocell subassembly to appear freezing and blocking the gas passage in reaction zone takes place under the low temperature condition, when the temperature of the inside liquid of monocell subassembly is monitored to forty degrees centigrade to second temperature sensor 31, controller 5 control electric heating rod 30 closes, thereby save the electric energy. The heat generated when the fuel cell body 2 operates is cooled and radiated by the radiation fan 26.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "vertical," "horizontal," "left," "right," and the like are used for descriptive purposes only. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed 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 one or more of that feature.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A fuel cell stack structure capable of quick cold start comprises a mounting frame (1), it is characterized in that the inner cavity of the mounting rack (1) is provided with a fuel cell body (2), the fuel cell body (2) is composed of a plurality of single cell components, the front end face of one of the single battery components is respectively provided with a first temperature sensor (4) and a controller (5), each single battery component is provided with a plurality of groups of heating and radiating mechanisms (3), an installation mechanism (7) is arranged on the rear end face of the installation rack (1), a heat dissipation mechanism (8) is arranged below the installation rack (1), four groups of supporting legs (9) are arranged at the bottom of the heat dissipation mechanism (8), and the bottom of each group of supporting legs (9) is connected with a base (10), and the bottom of the inner cavity of the mounting rack (1) is uniformly provided with a plurality of groups of radiating long grooves (6) in a penetrating manner.

2. The fuel cell stack structure capable of being rapidly and cold started according to claim 1, wherein the mounting mechanism (7) comprises a bidirectional screw (12), the left end and the right end of the bidirectional screw (12) are fixedly sleeved with bearing seats (18), the front side of each bearing seat (18) is fixedly connected with a first connecting rod (11), the two first connecting rods (11) are fixedly connected to the rear end face of the mounting frame (1), the right end of the bidirectional screw (12) extends out of the matched bearing seat (18) and is fixedly connected with a rotating disc (19), and a clamping plate (14) is fixedly connected to the screw sleeve (13).

3. The fuel cell stack structure capable of being rapidly and cold started according to claim 2, wherein a guide rod (15) is arranged above the bidirectional screw (12), two groups of guide rings (16) are movably sleeved on the periphery of the guide rod (15), the two groups of guide rings (16) are respectively and fixedly connected with the two groups of clamping plates (14), two groups of connecting rods II (17) are fixedly connected to the guide rod (15), and the two groups of connecting rods II (17) are both fixedly connected to the rear end face of the mounting frame (1).

4. The fuel cell stack structure capable of being rapidly started in a cold state according to claim 1, wherein the heating and heat dissipation mechanism (3) comprises a heat-conducting metal sleeve (29), an inner cavity of the heat-conducting metal sleeve (29) is provided with an electric heating rod (30), an outer wall of one group of the heat-conducting metal sleeves (29) is provided with a connecting groove, an inner cavity of the connecting groove is provided with a second temperature sensor (31), an outer surface of the second temperature sensor (31) is flush with an outer surface of the group of the heat-conducting metal sleeves (29), multiple groups of reserved holes are uniformly formed in the top of the single cell assembly, and each group of the heat-conducting metal sleeves (29) are respectively inserted and fixed into the inner cavities of the corresponding reserved holes.

5. The fuel cell stack structure capable of being rapidly started in a cold state as claimed in claim 1, wherein the heat dissipation mechanism (8) comprises a base plate (21), vertical rods (20) are fixedly connected to four corners of the top of the base plate (21), a plurality of groups of mounting holes are uniformly arranged on the base plate (21) in a penetrating manner, an electric fan assembly (22) is arranged in an inner cavity of each group of mounting holes, and four groups of support legs (9) are respectively connected to four corners of the bottom of the base plate (21).

6. The fuel cell stack structure capable of being rapidly and cold started according to claim 5, wherein the electric fan assembly (22) comprises a ventilation pipe (25), a heat dissipation electric fan (26) is arranged in an inner cavity of the ventilation pipe (25), a fixing ring (27) is fixedly sleeved on the periphery of the heat dissipation electric fan (26), and the ventilation pipe (25) is movably inserted into an inner cavity of a mounting hole in the substrate (21).

7. The fuel cell stack structure capable of being rapidly and cold started according to claim 6, wherein a plurality of groups of positioning blocks (28) are uniformly connected to the bottom of the fixing ring (27), slots matched with the positioning blocks are formed in positions corresponding to the top of the base plate (21) and each group of positioning blocks (28), each group of positioning blocks (28) are movably inserted into the inner cavities of the slots matched with each other, and the fixing ring (27) is fixedly connected with the base plate (21) through bolts.

8. A fuel cell stack structure capable of quick cold start according to claim 4, wherein the first temperature sensor (4) and the second temperature sensor (31) are electrically connected to the input end of the controller (5), and the electric heating rod (30) is electrically connected to the output end of the controller (5).