A micro fuel cell structure

Abstract

The present invention discloses a micro fuel cell structure. The micro fuel cell structure comprises a battery shell, the side wall of the battery shell is provided with multiple holes, an air cavity is arranged inside the battery shell, the bottom end of the battery shell is arranged as a negative electrode, and the top end of the battery shell is engaged with an insulating block, the center of the insulating block is arranged as a positive electrode, a gas nozzle is arranged inside the positive electrode, and the positive electrode is seamlessly connected to the inner side wall of the sealing component, the bottom end side wall of the sealing component is seamlessly connected to the inner side wall of the battery shell, the inner side wall of the positive electrode is slidably connected to a gas dish, the bottom surface of the gas dish is fixed with a sliding rod, and the side wall of the sliding rod is sleeved with a spring, the top end of the spring is in conflict with the bottom surface of the gas dish, the bottom surface of the spring is in conflict with a limit block, the sliding rod is slidably connected to the inner side wall of the limit block, and the micro fuel cell structure provided by the present invention has the function of reducing gas leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a micro fuel cell structure. Background Art

[0002] With the rapid development of equipment, fuel cells are the main energy source of the future. Their energy density is dozens of times that of lithium-ion batteries. If used in smartphones, they can maintain a battery life of nearly a week. The principle is to generate energy and provide electricity by burning "hydrogen". However, fuel cells have been unable to reduce their size and are mostly used in the automotive field. In addition, fuel cells are prone to leakage after being inflated, causing unnecessary losses.

[0003] Therefore, it is necessary to provide a new micro fuel cell structure to solve the above technical problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a micro fuel cell structure that reduces gas leakage.

[0005] The micro fuel cell structure provided by the present invention comprises: a battery shell, a side wall of the battery shell is provided with multiple holes, an air cavity is arranged inside the battery shell, the bottom end of the battery shell is arranged as a negative electrode, and the top end of the battery shell is engaged with an insulating block, the center of the insulating block is arranged as a positive electrode, a gas nozzle is arranged inside the positive electrode, and the positive electrode is seamlessly connected to the inner side wall of the sealing component, the bottom end side wall of the sealing component is seamlessly connected to the inner side wall of the battery shell, the inner side wall of the positive electrode is slidably connected with a gas dish, the bottom surface of the gas dish is fixedly connected with a sliding rod, and the side wall of the sliding rod is sleeved with a spring, the top end of the spring is in conflict with the bottom surface of the gas dish, the bottom surface of the spring is in conflict with a limit block, the sliding rod is slidably connected to the inner side wall of the limit block, the limit block is fixedly connected to the inner side wall of the positive electrode, the bottom surface of the sliding rod is fixedly connected with a gas plug, the inner side wall of the battery shell is respectively installed with two carbon papers, a catalyst and a proton exchange membrane, and the positive electrode is provided with a first air hole.

[0006] Preferably, the two carbon papers are respectively in contact with the left side wall of the catalyst and the right side wall of the proton exchange membrane, and the right side wall of the catalyst is in contact with the left side wall of the proton exchange membrane.

[0007] Preferably, the side wall of the air plug is an arc surface, and the diameter of the side wall of the air plug is smaller than the diameter of the bottom surface of the air plug.

[0008] Preferably, the diameter of the bottom surface of the air plug is larger than the diameter of the first air hole, and the bottom end of the first air hole is arc-shaped.

[0009] Preferably, the plurality of holes are arranged equidistantly on the side wall of the battery shell.

[0010] Preferably, a second air hole is provided inside the limiting block, and the sliding rod passes through the center of the limiting block.

[0011] Compared with the related art, the micro fuel cell structure provided by the present invention has the following beneficial effects:

[0012] 1. The present invention provides a micro fuel cell structure, which has a compact structure and a small volume. The volume of a traditional fuel cell is reduced through the holes on the side wall of the battery shell and the hydrogen reaction in the air cavity of the battery shell.

[0013] 2. The present invention provides a micro fuel cell structure, by arranging a retractable and resetting gas plug inside the gas nozzle, so that when not inflated, the gas plug can tightly block the gas nozzle under the action of a spring, so that the gas charged is not easy to leak out, reducing losses and avoiding fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the internal structure of the battery case of the present invention;

[0016] Figure 3 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0017] Numbers in the figure: 1. battery shell; 2. hole; 3. positive electrode; 4. negative electrode; 5. insulating block; 6. air nozzle; 7. air cavity; 8. sealing assembly; 9. carbon paper; 10. catalyst; 11. proton exchange membrane; 12. gas dish; 13. spring; 14. limit block; 15. sliding rod; 16. air plug; 17. first air hole; 18. second air hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention provides Figure 1-3A micro fuel cell structure shown in the figure includes a battery shell 1, a plurality of holes 2 are provided on the side wall of the battery shell 1, and the plurality of holes 2 are arranged equidistantly on the side wall of the battery shell 1. In order to allow oxygen to enter the cavity evenly, an air cavity 7 is provided inside the battery shell 1. The bottom end of the battery shell 1 is provided with a negative electrode 4, and the top end of the battery shell 1 is engaged with an insulating block 5, and the center of the insulating block 5 is provided with a positive electrode 3, and a gas nozzle 6 is provided inside the positive electrode 3, and the positive electrode 3 is connected to the inner side of the sealing component 8. The walls are seamlessly connected, the bottom side wall of the sealing component 8 is seamlessly connected to the inner wall of the battery shell 1, the inner wall of the positive electrode 3 is slidably connected with a gas dish 12, the bottom surface of the gas dish 12 is fixedly connected with a slide bar 15, and the side wall of the slide bar 15 is sleeved with a spring 13, the top of the spring 13 is in conflict with the bottom surface of the gas dish 12, the bottom surface of the spring 13 is in conflict with the limit block 14, the slide bar 15 is slidably connected to the inner wall of the limit block 14, and the limit block 14 is provided with a second air hole 18 , and the slide bar 15 passes through the center of the limit block 14. In order to allow hydrogen to pass through the limit block 14, the limit block 14 is fixedly connected to the inner wall of the positive electrode 3. The bottom surface of the slide bar 15 is fixedly connected with a gas plug 16. The side wall of the gas plug 16 is an arc surface, and the diameter of the side wall of the gas plug 16 is smaller than the diameter of the bottom surface of the gas plug 16. In order to enable the gas plug 16 to block the first air hole 17, the bottom surface diameter of the gas plug 16 is larger than the diameter of the first air hole 17, and the bottom end of the first air hole 17 is The battery shell 1 is arc-shaped to ensure the airtightness of the air plug 16 and the first air hole 17. Two carbon papers 9, a catalyst 10 and a proton exchange membrane 11 are respectively installed on the inner walls of the battery shell 1. The two carbon papers 9 are respectively fitted with the left wall of the catalyst 10 and the right wall of the proton exchange membrane 11, and the right wall of the catalyst 10 is fitted with the left wall of the proton exchange membrane 11. In order to enable the hydrogen inside the air cavity 7 to react with oxygen, a first air hole 17 is arranged inside the positive electrode 3.

[0020] The working principle of the micro fuel cell structure provided by the present invention is as follows:

[0021] Before use, the fuel cell needs to be inflated. Hydrogen is introduced into the second air hole 18 through the air nozzle 6. The gas increases the pressure on the upper end of the gas dish 12 as it is filled. Under the action of the pressure, the hydrogen causes the gas dish 12 to slide downward, so that the slide bar 15 pushes the gas plug 16 to separate from the bottom air port of the second air hole 18, and the hydrogen of the compressed spring 13 passes through the first air hole 17 and the second air hole 18 on the limit block 14 at the same time, and is finally introduced into the air cavity 7. After the inflation is completed, when the inflation is stopped, the pressure on the upper end of the gas dish 12 is reduced. Under the action of the elastic potential energy of the spring 13, the gas dish 12 is reset, and then the gas plug 16 blocks the second air hole 18 again, so that the gas will not escape. When in use, oxygen passes through the hole 2 on the battery shell 1, and reacts electrochemically with the hydrogen fuel inside the air cavity 7 under the action of the proton exchange membrane 11 and the catalyst 10, thereby generating electrical energy.

[0022] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A micro fuel cell structure, comprising a battery housing (1), characterized in that: The side wall of the battery shell (1) is provided with a plurality of holes (2), the interior of the battery shell (1) is provided with an air cavity (7), the bottom end of the battery shell (1) is provided with a negative electrode (4), the top end of the battery shell (1) is engaged with an insulating block (5), the center of the insulating block (5) is provided with a positive electrode (3), an air nozzle (6) is provided inside the positive electrode (3), and the positive electrode (3) is seamlessly connected to the inner side wall of the sealing component (8), and the bottom side wall of the sealing component (8) is connected to the battery shell. The inner wall of the positive electrode (3) is seamlessly connected to the inner wall of the positive electrode (3), the inner wall of the positive electrode (3) is slidably connected to a gas dish (12), the bottom surface of the gas dish (12) is fixedly connected to a sliding rod (15), and the side wall of the sliding rod (15) is sleeved with a spring (13), the top of the spring (13) is in contact with the bottom surface of the gas dish (12), the bottom surface of the spring (13) is in contact with a limit block (14), the sliding rod (15) is slidably connected to the inner wall of the limit block (14), and the limit block (14) is in contact with the positive electrode (3) The inner walls are fixedly connected, the bottom surface of the slide bar (15) is fixedly connected with an air plug (16), the inner walls of the battery shell (1) are respectively installed with two carbon papers (9), a catalyst (10) and a proton exchange membrane (11), and a first air hole (17) is arranged inside the positive electrode (3); the two carbon papers (9) are respectively in contact with the left side wall of the catalyst (10) and the right side wall of the proton exchange membrane (11), and the right side wall of the catalyst (10) is in contact with the left side wall of the proton exchange membrane (11). The gas plug (16) is in an arc shape, and the diameter of the gas plug (16) is smaller than the diameter of the bottom surface of the gas plug (16); the bottom surface diameter of the gas plug (16) is larger than the diameter of the first air hole (17), and the bottom end of the first air hole (17) is in an arc shape; a plurality of holes (2) are arranged equidistantly on the side wall of the battery shell (1); a second air hole (18) is provided inside the limit block (14), and the slide bar (15) passes through the center of the limit block (14).

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