CN219371077U

CN219371077U - Portable direct methanol fuel cell

Info

Publication number: CN219371077U
Application number: CN202320327165.4U
Authority: CN
Inventors: 林晓; 李晓雨; 洪坡
Original assignee: Shanghai Ruiwei New Energy Technology Co ltd
Current assignee: Shanghai Ruiwei New Energy Technology Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-07-18
Anticipated expiration: 2033-02-27

Abstract

The utility model provides a portable direct methanol fuel cell, and belongs to the technical field of fuel cells. The technical problems that the structure of the existing methanol fuel cell is complex and the like are solved. The portable direct methanol fuel cell comprises a shell structure and a pile structure, and is characterized in that the pile structure is arranged in the shell structure, the pile structure comprises an interface end plate assembly, a cell assembly and a rear end plate assembly, the cell assembly is arranged between the interface end plate assembly and the rear end plate assembly, the interface end plate assembly and the rear end plate assembly are fastened through a plurality of screws, a limiting plate is further arranged between the interface end plate assembly and the rear end plate assembly, the shell structure comprises a shell, an upper cover, a bottom cover and a rotating cover, the shell is arranged on the bottom cover, the top end of the shell is provided with the upper cover, the rotating cover is detachably arranged on the upper cover, and a mounting frame for mounting the cell assembly is arranged on the bottom cover. The utility model has the advantages of simple structure, practicability and the like.

Description

Portable direct methanol fuel cell

Technical Field

The utility model belongs to the technical field of fuel cells, and relates to a methanol fuel cell, in particular to a portable direct methanol fuel cell.

Background

A fuel cell is a high-efficiency, clean energy source, and is an energy conversion device that converts chemical energy stored in fuel and oxidant directly into electric energy isothermally according to electrochemical principles, i.e., primary cell operation principles, so that the actual process is a redox reaction. Fuel cells are mainly composed of four parts, namely an anode, a cathode, an electrolyte and an external circuit. Methanol is a liquid fuel, and has the advantages of convenient storage and transportation, and similar usage to gasoline. The direct methanol fuel cell is a fuel cell directly using methanol as an anode active material, and the methanol and the oxygen generate carbon dioxide and water through chemical reaction, so that the direct methanol fuel cell is one of proton exchange membrane fuel cells.

The existing methanol fuel cell has a complex structure, and needs to adopt an air compressor for air intake and a water pump for water drainage; in view of the above problems, a portable direct methanol fuel cell has been devised.

Disclosure of Invention

The utility model aims at solving the problems in the prior art, and provides a portable direct methanol fuel cell which has the advantages of simple structure, practicability and the like.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a portable direct methanol fuel cell, includes shell structure and pile structure, its characterized in that, pile structure install in shell structure, pile structure include interface end plate subassembly, battery pack and back end plate subassembly, battery pack installs between interface end plate subassembly and back end plate subassembly, interface end plate subassembly and back end plate subassembly are fastened through a plurality of screw rods, still install the limiting plate between interface end plate subassembly and the back end plate subassembly, shell structure include casing, upper cover, bottom and spiral cover, the casing is installed on the bottom and is covered, the upper cover is installed on the top of casing, cover detachably and be provided with the spiral cover, be provided with the mounting bracket that is used for installing battery pack on the bottom.

The interface end plate assembly comprises an interface end plate, an anode insulating plate and an anode current collecting plate, wherein the anode current collecting plate is arranged on the anode insulating plate, the anode insulating plate is arranged on the interface end plate, a screw rod is fastened with the interface end plate through a threaded sleeve, a first sealing ring is further arranged on the interface end plate, and a fuel interface is arranged on the anode insulating plate.

The rear end plate assembly comprises a rear end plate, a floating end plate, a cathode insulating plate and a cathode current collecting plate, wherein the rear end plate, the floating end plate, the cathode insulating plate and the cathode current collecting plate are sequentially fixed from bottom to top, and a plurality of spring discs are arranged between the rear end plate and the floating end plate.

The surface of the rear end plate is also provided with a water storage tank, and the vertical plane of the rear end plate is provided with a vertical water tank.

The rear end plate is also provided with a plurality of screw perforations for installation and fixation.

The battery assembly comprises an anode special plate and a cathode special plate, the anode special plate is propped against the interface end plate assembly, and a plurality of common bipolar plates and a plurality of proton exchange membranes are arranged between the anode special plate and the cathode special plate.

And a second sealing ring for sealing is also arranged on the bottom cover.

The upper cover is provided with an inlet, a first check valve is arranged at the inlet, the bottom cover is provided with an outlet, and a second check valve is arranged at the outlet.

The upper cover is provided with a miniature voltmeter and a USB female head.

The upper cover is fixed with the interface end plate assembly through a plurality of screws.

And the mounting frame is also provided with a cylindrical head screw for fixing the battery assembly.

The mounting frame and the shell adopt an integrated design.

Compared with the prior art, the utility model has the following advantages:

1. be provided with the female head of USB, use miniature voltmeter control simultaneously, convenient to use.

2. The methanol fuel cell has only one inlet and outlet, does not need to adopt an air compressor, and simultaneously discharges reaction product water under the action of gravity, does not need a water pump, and has the advantages of simple structure, practicability and the like.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic cross-sectional structure of the present utility model.

Fig. 3 is a schematic structural view of the battery assembly of the present utility model.

Fig. 4 is a schematic structural view of the header end plate assembly of the present utility model.

Fig. 5 is a schematic view of the structure of the battery assembly of the present utility model with a portion removed.

Fig. 6 is a schematic structural view of the rear end plate assembly of the present utility model.

Fig. 7 is a schematic structural view of the housing structure of the present utility model.

In the figure, 1, a shell structure; 2. a galvanic pile structure; 21. an interface endplate assembly; 22. a battery assembly; 23. a rear end plate assembly; 24. a screw; 25. a limiting plate; 211. an interface end plate; 212. an anode insulating plate; 213. an anode current collecting plate; 214. a fuel interface; 215. a first sealing ring; 216. a thread sleeve; 221. an anode special plate; 222. a common bipolar plate; 223. a proton exchange membrane; 224. a cathode special plate; 231. a rear end plate; 232. a floating end plate; 233. a spring disc; 234. a cathode current collecting plate; 235. a water storage tank; 236. perforating a screw; 237. a vertical water tank; 238. a cathode insulating plate; 101. screwing the cover; 102. an upper cover; 103. a first check valve; 104. a screw; 105. cylindrical head screw; 106. a second sealing ring; 107. a bottom cover; 108. a housing; 109. a second check valve; 110. a miniature voltmeter; 111. USB female.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 7, the portable direct methanol fuel cell comprises a housing structure 1 and a pile structure 2, wherein in the embodiment, the pile structure 2 is installed in the housing structure 1, the pile structure 2 comprises an interface end plate assembly 21, a cell assembly 22 and a rear end plate assembly 23, the cell assembly 22 is installed between the interface end plate assembly 21 and the rear end plate assembly 23, the interface end plate assembly 21 and the rear end plate assembly 23 are fastened through a plurality of screws 24, a limiting plate 25 is also installed between the interface end plate assembly 21 and the rear end plate assembly 23, the housing structure 1 comprises a housing 108, an upper cover 102, a bottom cover 107 and a spiral cover 101, the housing 108 is installed on the bottom cover 107, the upper cover 102 is installed at the top end of the housing 108, the spiral cover 101 is detachably arranged on the upper cover 102, and a mounting frame for installing the cell assembly 22 is arranged on the bottom cover 107.

The interface end plate assembly 21 comprises an interface end plate 211, an anode insulating plate 212 and an anode current collecting plate 213, wherein the anode current collecting plate 213 is arranged on the anode insulating plate 212, the anode insulating plate 212 is arranged on the interface end plate 211, a screw 24 is fastened with the interface end plate 211 through a threaded sleeve 216, a first sealing ring 215 is further arranged on the interface end plate 211, and a fuel interface 214 is arranged on the anode insulating plate 212.

The rear end plate assembly 23 includes a rear end plate 231, a floating end plate 232, a cathode insulating plate 238 and a cathode current collecting plate 234, the rear end plate 231, the floating end plate 232, the cathode insulating plate 238 and the cathode current collecting plate 234 are sequentially fixed from bottom to top, and a plurality of spring disks 233 are disposed between the rear end plate 231 and the floating end plate 232, and in this embodiment, the number of the spring disks 233 is four, so that the equipment is more compact.

The surface of the rear end plate 231 is also provided with a water storage groove 235, and the vertical plane of the rear end plate 231 is provided with a vertical water groove 237.

The rear end plate 231 is further provided with a plurality of screw holes 236 for mounting and fixing, which is more reliable in this embodiment.

The battery assembly 22 includes an anode special plate 221 and a cathode special plate 224, the anode special plate 221 abuts against the interface end plate assembly 21, a plurality of common bipolar plates 222 and a plurality of proton exchange membranes 223 are installed between the anode special plate 221 and the cathode special plate 224, and in this embodiment, the common bipolar plates 222 and the proton exchange membranes 223 are alternately arranged.

The bottom cover 107 is also provided with a second sealing ring 106 for sealing.

The upper cover 102 is provided with an inlet, the inlet is provided with a first check valve 103, the bottom cover 107 is provided with an outlet, and the outlet is provided with a second check valve 109.

The upper cover 102 is provided with the micro voltmeter 110 and the USB female connector 111, and in this embodiment, the micro voltmeter 110 and the USB female connector 111 are adopted, so that the use is more convenient.

The upper cover 102 is secured to the header assembly 21 by a plurality of screws 104.

The mounting bracket is also provided with cylindrical head screws 105 for securing the battery assembly 22.

The mounting bracket and housing 108 are of unitary design.

In this embodiment, the water generated by the reaction flows down along the outer wall surface of the battery assembly 22 under the action of gravity, along the outer inclined surface of the cathode insulating plate 238, flows to the water storage groove 235 of the rear end plate 231, and flows downward through the vertical water groove 237 into the water storage cavities of the housing 108 and the lower cover through the circular holes in the housing 108.

In the embodiment, only one inlet and outlet is arranged, the whole flow channel is filled with hydrostatic pressure, elements such as a liquid pump and the like are not needed, a reaction gas outlet adopts a circumferential circular hole for exhausting, an air inlet adopts a circumferential Xiang Jinqi, the flow channel is filled with the reaction gas by utilizing the concentration diffusion principle, an air compressor is not needed, and the reaction generated water is discharged along an inclined plane in the circumferential direction under the action of gravity without a water pump.

In this embodiment, the methanol solution flows in from the fuel interface 214 under the action of gravity, flows through the central circular hole of the bipolar plate, flows through the flow passage opening, reaches the anode side of the proton exchange membrane 223 through the fuel flow passage to participate in electrochemical reaction, carbon dioxide generated by the reaction at the anode side forms a cavity through the air outlet, the gas-liquid separation membrane, the cathode plate and the anode plate, finally is discharged through the outlet, air enters from the inlet under the action of concentration difference, reaches the cathode side of the proton exchange membrane 223 through the flow passage to participate in electrochemical reaction, and cathode reactant water flows out from the water outlet, flows out through the inclined plane of the inclined anode plate due to gravity, and finally is discharged through the outlet.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a portable direct methanol fuel cell, includes shell structure (1) and pile structure (2), its characterized in that, pile structure (2) install in shell structure (1), pile structure (2) include interface end plate assembly (21), battery pack (22) and back end plate assembly (23), battery pack (22) are installed between interface end plate assembly (21) and back end plate assembly (23), interface end plate assembly (21) and back end plate assembly (23) fasten through a plurality of screw rods (24), still install limiting plate (25) between interface end plate assembly (21) and back end plate assembly (23), shell structure (1) include casing (108), upper cover (102), bottom (107) and spiral cover (101), casing (108) are installed on bottom (107), upper cover (102) are installed on the top of casing (108), can dismantle on upper cover (102) and are provided with on bottom (107) and are used for installing battery pack (22) mounting bracket.

2. The portable direct methanol fuel cell as in claim 1, wherein the interface end plate assembly (21) comprises an interface end plate (211), an anode insulating plate (212) and an anode current collecting plate (213), the anode current collecting plate (213) is mounted on the anode insulating plate (212), the anode insulating plate (212) is mounted on the interface end plate (211), the screw (24) is fastened with the interface end plate (211) through a threaded sleeve (216), a first sealing ring (215) is further arranged on the interface end plate (211), and the fuel interface (214) is mounted on the anode insulating plate (212).

3. The portable direct methanol fuel cell as in claim 1, wherein the back end plate assembly (23) comprises a back end plate (231), a floating end plate (232), a cathode insulating plate (238) and a cathode current collecting plate (234), the back end plate (231), the floating end plate (232), the cathode insulating plate (238) and the cathode current collecting plate (234) are sequentially fixed from bottom to top, and a plurality of spring disks (233) are arranged between the back end plate (231) and the floating end plate (232).

4. A portable direct methanol fuel cell according to claim 3, wherein the surface of the rear end plate (231) is further provided with a water storage tank (235), the vertical plane of the rear end plate (231) is provided with a vertical water tank (237), and the rear end plate (231) is further provided with a plurality of screw through holes (236) for mounting and fixing.

5. The portable direct methanol fuel cell as set forth in claim 1, wherein the cell assembly (22) includes an anode special plate (221) and a cathode special plate (224), the anode special plate (221) abuts against the interface end plate assembly (21), the cathode special plate (224) abuts against the rear end plate assembly (23), and a plurality of common bipolar plates (222) and a plurality of proton exchange membranes (223) are installed between the anode special plate (221) and the cathode special plate (224).

6. The portable direct methanol fuel cell as in claim 1, wherein the bottom cover (107) is further provided with a second sealing ring (106) for sealing.

7. The portable direct methanol fuel cell as set forth in claim 1, wherein the upper cover (102) has an inlet, the inlet has a first check valve (103), the bottom cover (107) has an outlet, and the outlet has a second check valve (109).

8. The portable direct methanol fuel cell as in claim 1, wherein the upper cover (102) is provided with a micro voltmeter (110) and a USB female (111).

9. The portable direct methanol fuel cell as in claim 1, wherein the upper cover (102) is secured to the interface end plate assembly (21) by a plurality of screws (104).

10. The portable direct methanol fuel cell as in claim 1, wherein the mounting bracket is further provided with a cylindrical head screw (105) for fixing the cell assembly (22).