Portable direct methanol fuel cell

Abstract

The invention relates to the technical field of fuel cells, in particular to a portable direct methanol fuel cell which comprises a cell box, a partition plate fixedly installed in the middle of the cell box, a methanol cell fixedly installed above the partition plate, a first air inlet and a second air inlet formed in the bottom of the cell box and the partition plate respectively, and heat dissipation openings formed in the two side walls of the cell box. A radiator is fixedly installed on the inner side of the heat dissipation opening. And the base is installed below the battery box in an up-down floating mode and used for supporting the battery box and controlling opening and closing of the first air inlet, sealing plates are fixedly installed on the two sides of the base correspondingly, and a telescopic rod used for controlling the position of the base is fixedly installed at the bottom of the battery box. In the invention, external air exchanges heat with the outer wall of the methanol battery and the heating element in the battery box, so that heat in the battery box is quickly taken away, and the influence of continuous high temperature of the inner wall of the battery box on the service life of the methanol battery is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cells, and in particular to a portable direct methanol fuel cell. Background Art

[0002] Hydrogen now occupies a very important position in our country's energy system and has a good development prospect. Hydrogen energy is the general trend of future energy development, but the biggest problem at present is the storage and transportation of hydrogen. One is safety, and the other is the high cost of storage and transportation, including the construction cost of hydrogen refueling stations. At present, methanol is generally believed to be the best hydrogen storage and transportation carrier. First of all, the output of methanol is very large. It is a bulk chemical and energy commodity with low price. In the context of our country's energy security needs to be guaranteed, methanol is a better energy alternative.

[0003] Methanol reforming fuel cell combines a methanol reforming hydrogen production module with a high-temperature proton exchange membrane fuel cell stack. 60% methanol water generates hydrogen through reforming reaction, and hydrogen directly generates electricity through the high-temperature proton exchange membrane stack. The whole process realizes the immediate use of hydrogen, without hydrogen storage, and the exhaust gas contains only water and carbon dioxide, so the whole power generation process is relatively safe and clean. In the context of the sustainable growth of green methanol energy, the methanol reforming fuel cell products we are engaged in can achieve zero carbon emissions, because industrial methanol has been used before, and industrial methanol will produce certain carbon emissions in the entire energy utilization cycle system. However, if we make good use of green methanol energy in the future, we can achieve a zero carbon emission in the entire methanol reforming fuel cell closed loop.

[0004] In particular, direct methanol fuel cell (DMFC) is a device that directly converts the chemical energy of methanol into electrical energy. Compared with other types of fuel cells, DMFC has the characteristics of simple system structure, high volume energy density, short start-up time, high operation reliability and convenient fuel replenishment, making DMFC particularly suitable as a mobile or portable power source for various purposes.

[0005] However, since portable direct methanol fuel cells need to be carried during use, it is difficult to install an efficient water-cooled radiator. It is also difficult to maintain the internal temperature of the methanol fuel cell using a traditional battery heat dissipation structure (the suitable operating temperature of a methanol fuel cell is usually between 20 and 80°C). When the temperature is too high (over 100°C), the water vapor partial pressure in the battery is too high, which will not only cause serious water loss in the membrane electrode and seriously reduce battery performance, but also, under high temperature conditions, methanol is more likely to penetrate into the cathode to form a mixed potential, resulting in a decrease in battery performance. Summary of the invention

[0006] Technical issues solved

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a portable direct methanol fuel cell, which can effectively solve the problems in the prior art. Since the portable direct methanol fuel cell needs to be carried during use, it is difficult to maintain the internal temperature of the methanol combustion cell using a traditional battery heat dissipation structure; when the temperature is too high, the water vapor partial pressure in the battery is too high, which will not only cause serious water loss of the membrane electrode, but also seriously reduce the battery performance.

[0008] Technical Solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] The present invention provides a portable direct methanol fuel cell, comprising a battery box, a partition is fixedly installed in the middle, a methanol battery is fixedly installed above the partition, a first air inlet and a second air inlet are respectively arranged on the bottom and the partition of the battery box, heat dissipation ports are arranged on both side walls of the battery box, and a radiator is fixedly installed inside the heat dissipation port;

[0011] The base is installed up and down floatingly under the battery box, and is used to support the battery box and control the opening and closing of the first air inlet. Sealing plates are fixedly installed on both sides of the base. The sealing plates move up and down driven by the base to control the opening and closing of the heat dissipation port. A telescopic rod for controlling the position of the base is fixedly installed at the bottom of the battery box.

[0012] Furthermore, a plurality of guide plates are fixedly installed on both sides of the battery box, slide grooves are arranged on the guide plates, and four support rods are fixedly installed on the base, and the support rods slide inside the slide grooves.

[0013] Furthermore, a guide groove for guiding the sealing plate to move up and down is arranged on the side of the guide plate, and two sides of the sealing plate are respectively located inside the guide grooves on the guide plate and slide.

[0014] Furthermore, a fixing frame is fixedly installed on the upper part of the battery box, the fixing frame is located above the electrode of the methanol battery, an electrode protection assembly is fixedly installed on the fixing frame, the electrode protection assembly is used to protect the electrode, and a lifting frame is slidably installed above the fixing frame, the lifting frame is used to adjust the opening and closing of the electrode protection assembly.

[0015] Furthermore, a rotating rod is rotatably installed inside the battery box, the middle part of the rotating rod passes through the battery box, and the two ends of the rotating rod respectively extend into the slide groove of the guide plate, and gears are fixedly installed in the middle and both ends of the rotating rod. A first tooth row is provided on one side of the support rod located inside the slide groove. During the up and down movement of the support rod, the rotating rod is driven to rotate by the first tooth row, and the rotating rod controls the up and down movement of the lifting frame by rotating.

[0016] Furthermore, the projection profile of the side view of the lifting frame is an inverted U-shape, and second tooth rows are fixedly installed on both sides of the lifting frame. The second tooth rows on both sides of the lifting frame are respectively meshed with the gears in the middle of the rotating rod.

[0017] Furthermore, the electrode protection assembly includes a fixed sleeve fixedly mounted on the fixed frame, a sliding rod is coaxially slidably mounted in the middle of the fixed sleeve, the upper part of the sliding rod is fixedly connected to the lifting frame, an insulating sealing sleeve for sleeved on the outer side of the electrode is fixedly mounted below the sliding rod, a fixed terminal for conductive connection with the electrode is suspended below the insulating sealing sleeve, a connecting rod for connecting with the fixed sleeve is arranged on the side of the fixed terminal, and the connecting rod is used to drive the fixed terminal away from the electrode during the descent of the insulating sealing sleeve.

[0018] Furthermore, an exhaust piece is slidably installed on the top of the insulating sealing sleeve, and an annular scraper is provided at the lower end opening of the insulating sealing sleeve. The annular scraper is used to scrape off residual oxides on the electrode during the downward movement of the insulating sealing sleeve. The bottom sleeve of the electrode is provided with a receiving seat, and the receiving seat is provided with an annular receiving groove.

[0019] Furthermore, the exhaust component includes a sliding tube passing through the insulating sealing sleeve, and a hemispherical sealing cover is fixedly installed below the sliding tube. The sealing cover is used to block the through hole through which the sliding tube passes during the contact between the top of the inner wall of the insulating sealing sleeve and the top of the electrode. A connecting through hole is provided in the middle of the sliding tube for connecting with the internal space of the insulating sealing sleeve.

[0020] Furthermore, a support plate is rotatably installed at the bottom of the battery box, and a mounting groove for placing the support plate is provided on the base. A limiting rod is fixedly installed on the inner wall of the mounting groove, and a strip groove for sliding of the limiting rod is provided on the side of the support plate. During the downward movement of the base, the support plate is driven downward by the limiting rod.

[0021] Beneficial Effects

[0022] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0023] 1. In the present invention, by respectively arranging the first air inlet and the second air inlet on the bottom and the partition of the battery box, and arranging the heat dissipation port on the side of the battery box, during the operation of the methanol battery inside the battery box, the radiator discharges the hot air inside the battery box from the heat dissipation port, and the air at the bottom of the battery box enters the interior of the battery box from the first air inlet and the second air inlet in turn, exchanges heat with the outer wall of the methanol battery and the heating element inside the battery box, and quickly takes away the heat inside the battery box, thereby preventing the continuous high temperature of the inner wall of the battery box from affecting the service life of the methanol battery.

[0024] 2. In the present invention, by fixing the fixed sleeve on the fixed frame, when the methanol battery needs to be transported after use, the slide bar is driven downward so that the insulating sealing sleeve at the lower end of the slide bar is sleeved on the outside of the electrode. At the same time, the downward movement of the slide bar will also drive the fixed terminals on both sides of the electrode to move away from each other, so as to disconnect the connection between the electrode and the external conductive wire, thereby avoiding damage to the electrode caused by short-circuiting the external conductive wire during carrying or transportation. At the same time, since the insulating sealing sleeve is sleeved on the outside of the electrode to form a sealed environment, the oxidation of the electrode during use can be reduced, thereby extending the service life of the electrode.

[0025] 3. In the present invention, by rotatably installing a rotating rod inside the battery box, during use, the up and down movement of the support rod inside the slide groove can be used to drive the rotation of the rotating rod. At the same time, since a gear is also fixedly installed in the middle of the rotating rod, when the rotating rod rotates, the lifting frame can be driven to move up and down above the fixed frame, thereby achieving the purpose of adjusting the up and down movement of the lifting frame. By adjusting the height of the lifting frame, the opening and closing of the fixed terminal can be adjusted, and the up and down movement of the insulating sealing sleeve can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the base of the present invention when it moves downward;

[0029] Figure 3 is a side view of the present invention;

[0030] Figure 4 It is an exploded view of the overall structure of the present invention;

[0031] Figure 5 It is a side view of the internal structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the internal overall structure of the present invention;

[0033] Figure 7 For the present invention Figure 6 A local enlarged structural schematic diagram;

[0034] Figure 8 A partial cross-sectional view of the present invention from a bottom-up perspective;

[0035] Fig. 9 It is a structural schematic diagram of the fixed frame and the lifting frame of the present invention being installed in coordination;

[0036] Fig.10 It is a schematic diagram of the overall structure of the electrode protection assembly of the present invention;

[0037] Fig.11 is a cross-sectional view of the insulating sealing sleeve of the present invention;

[0038] Fig.12 It is a half-section view of the exhaust member of the present invention.

[0039] The numbers in the figure represent:

[0040] 1. Battery box; 11. Guide plate; 1101. Slide groove; 12. Heat dissipation port; 13. Telescopic rod; 14. Support plate; 1401. Strip groove; 141. Limit rod; 15. Rotating rod; 16. Radiator;

[0041] 2. base; 21. sealing plate; 22. support rod; 221. first tooth row;

[0042] 3. Fixed frame; 31. Fixed sleeve; 32. Sliding rod; 33. Insulating sealing sleeve; 331. Exhaust member; 3311. Sliding tube; 3312. Sealing cover; 3313. Connecting through hole; 332. Annular scraper; 34. Fixed terminal; 4. Lifting frame; 41. Second tooth row;

[0043] 5. methanol battery; 51. electrode; 52. receiving seat; 5201. receiving slot. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0045] The present invention will be further described below in conjunction with the embodiments.

[0046] To this end, an embodiment of the present invention provides a portable direct methanol fuel cell, the purpose of which is at least to allow external air to exchange heat with the outer wall of the methanol battery 5 and the heating element inside the battery box 1, quickly taking away the heat inside the battery box 1, and avoiding the continuous high temperature of the inner wall of the battery box 1 affecting the service life of the methanol battery 5.

[0047] Embodiment: A portable direct methanol fuel cell, such as Figure 1 - Figure 8 As shown, it includes a battery box 1, a partition is fixedly installed in the middle, a methanol battery 5 is fixedly installed above the partition, a first air inlet 101 and a second air inlet 102 are respectively arranged on the bottom and the partition of the battery box 1, wherein the second air inlet 102 is a long strip structure, distributed along the outer side of the methanol battery 5, heat dissipation ports 12 are arranged on both side walls of the battery box 1, a radiator 16 is fixedly installed on the inner side of the heat dissipation port 12, and the middle height of the radiator 16 is consistent with the height of the upper end surface of the methanol battery 5;

[0048] The base 2 is installed up and down floatingly below the battery box 1, and is used to support the battery box 1 and control the opening and closing of the first air inlet 101. Sealing plates 21 are fixedly installed on both sides of the base 2. The sealing plates 21 move up and down driven by the base 2 to control the opening and closing of the heat dissipation port 12. A telescopic rod 13 for controlling the position of the base 2 is fixedly installed at the bottom of the battery box 1, and the telescopic rod 13 can be an electric push rod.

[0049] In the present invention, by respectively arranging the first air inlet 101 and the second air inlet 102 on the bottom and the partition of the battery box 1, and arranging the heat dissipation port 12 on the side of the battery box 1, during the operation of the methanol battery 5 inside the battery box 1, the radiator 16 discharges the hot air inside the battery box 1 from the heat dissipation port 12, and the air at the bottom of the battery box 1 enters the interior of the battery box 1 from the first air inlet 101 and the second air inlet 102 in turn, exchanges heat with the outer wall of the methanol battery 5 and the heating element inside the battery box 1, and quickly takes away the heat inside the battery box 1, thereby preventing the continuous high temperature of the inner wall of the battery box 1 from affecting the service life of the methanol battery 5.

[0050] In addition, since a base 2 is provided at the bottom of the battery box 1, during use, the base 2 can be pushed by the telescopic rod 13 to move the battery box 1 upward as a whole, and at this time the base 2 will leave the outside of the first air inlet 101, opening the first air inlet 101, so that air can smoothly pass through the first air inlet 101 into the interior of the battery box 1. At the same time, during carrying, the telescopic rod 13 can be driven to retract so that the base 2 is close to the first air inlet 101 at the bottom of the battery box 1, the first air inlet 101 can be closed, and the sealing plate 21 can be sealed at the heat dissipation port 12, which can prevent moisture or other debris from entering the interior of the battery box 1 from the first air inlet 101 during carrying.

[0051] Furthermore, if Figure 2 and Figure 3 As shown, a plurality of guide plates 11 are fixedly installed on both sides of the battery box 1 , and a slide groove 1101 is provided on the guide plate 11 . Four support rods 22 are fixedly installed on the base 2 , and the support rods 22 slide inside the slide groove 1101 .

[0052] Among them, by setting a guide plate 11 around the battery box 1 and setting a support rod 22 on the base 2, the support rod 22 is slidably connected with the guide plate 11, so that the base 2 can stably support the battery box 1 during use, thereby preventing the battery box 1 located above the base 2 from shaking during use.

[0053] Furthermore, if Figure 2 and Figure 3 As shown, the side of the guide plate 11 is provided with a guide groove for guiding the sealing plate 21 to move up and down, and both sides of the sealing plate 21 are respectively located in the guide grooves on the guide plate 11 and slide therein.

[0054] Among them, by setting a guide groove on the guide plate 11, the up and down movement of the sealing plate 21 can be guided, so that the sealing plate 21 is tightly fitted to the heat dissipation port 12 when it is outside the heat dissipation port 12. In addition, a sealing ring is embedded on the outside of the heat dissipation port 12, and the sealing ring is used to fit with the side wall of the sealing plate 21.

[0055] Furthermore, if Figure 5 and Figure 6 As shown, a fixing frame 3 is fixedly installed on the upper part of the battery box 1, and the fixing frame 3 is located above the electrode 51 of the methanol battery 5. An electrode protection assembly is fixedly installed on the fixing frame 3, and the electrode protection assembly is used to protect the electrode 51. A lifting frame 4 is installed above the fixing frame 3 to slide up and down, and the lifting frame 4 is used to adjust the opening and closing of the electrode protection assembly.

[0056] Among them, by arranging an electrode protection component inside the battery box 1, the electrode protection component is used to protect the electrode 51, so that the methanol battery 5 inside the battery box 1 can disconnect the circuit during the carrying process, and the electrode of the methanol battery 5 can be protected.

[0057] Furthermore, if Figure 6 and Figure 7 As shown, the electrode protection assembly includes a fixed sleeve 31 fixedly mounted on the fixed frame 3, a slide rod 32 is coaxially slidably mounted in the middle of the fixed sleeve 31, the upper part of the slide rod 32 is fixedly connected to the lifting frame 4, an insulating sealing sleeve 33 for sleeved on the outside of the electrode 51 is fixedly mounted below the slide rod 32, a fixed terminal 34 for conductive connection with the electrode 51 is suspended below the insulating sealing sleeve 33, a connecting rod for connecting with the fixed sleeve 31 is arranged on the side of the fixed terminal 34, and the connecting rod is used to drive the fixed terminal 34 away from the electrode 51 during the descent of the insulating sealing sleeve 33 (made of hard insulating material, such as glass fiber reinforced plastic, phenolic resin or silicone rubber).

[0058] Among them, by fixing the fixing sleeve 31 on the fixing frame 3, when the methanol battery 5 needs to be transported after use, the sliding rod 32 is driven downward so that the insulating sealing sleeve 33 at the lower end of the sliding rod 32 is sleeved on the outside of the electrode 51. At the same time, the downward movement of the sliding rod 32 will also drive the fixed terminals 34 on both sides of the electrode 51 to move away from each other, thereby disconnecting the connection between the electrode 51 and the external conductive wire, thereby avoiding damage to the electrode 51 caused by a short circuit of the external conductive wire during carrying or transportation. At the same time, since the insulating sealing sleeve 33 is sleeved on the outside of the electrode 51 to form a sealed environment, the oxidation of the electrode 51 during use can be reduced, thereby extending the service life of the electrode 51.

[0059] Furthermore, if Figure 8 and Fig. 9 As shown, a rotating rod 15 is rotatably installed inside the battery box 1, the middle part of the rotating rod 15 passes through the inside of the battery box 1, and the two ends of the rotating rod 15 respectively extend into the inside of the slide groove 1101 of the guide plate 11, and gears are fixedly installed in the middle part and both ends of the rotating rod 15. The support rod 22 is located on one side of the slide groove 1101 and is provided with a first tooth row 221. During the up and down movement of the support rod 22, the rotating rod 15 is driven to rotate by the first tooth row 221, and the rotating rod 15 controls the up and down movement of the lifting frame 4 by rotating.

[0060] Among them, by rotatably installing the rotating rod 15 inside the battery box 1, during use, the up and down movement of the support rod 22 inside the slide groove 1101 can be used to drive the rotation of the rotating rod 15. At the same time, since a gear is also fixedly installed in the middle of the rotating rod 15, when the rotating rod 15 rotates, the lifting frame 4 can be driven to move up and down above the fixed frame 3, so as to achieve the purpose of adjusting the up and down movement of the lifting frame 4. By adjusting the height of the lifting frame 4, the opening and closing of the fixed terminal 34 can be adjusted, and the up and down movement of the insulating sealing sleeve 33 can be adjusted.

[0061] Furthermore, if Fig. 9 As shown, the side view projection profile of the lifting frame 4 is an inverted U-shape, and second gear rows 41 are fixedly installed on both sides of the lifting frame 4. The second gear rows 41 on both sides of the lifting frame 4 are respectively meshed with the gears in the middle of the rotating rod 15.

[0062] By providing the second tooth rows 41 on both sides of the lifting frame 4, the base 2 is driven to rotate the rotating rod 15 during the downward movement relative to the battery box 1 (such as Figure 6 As shown in the figure, the left rotating rod 15 rotates counterclockwise and the right rotating rod 15 rotates clockwise), at this time, the gear in the middle of the rotating rod 15 drives the lifting frame 4 to move upward, and the lifting frame 4 drives the sliding rod 32 to move upward, so that the insulating sealing sleeve 33 under the sliding rod 32 slides upward to the top of the motor 51, so that the fixed terminal 34 contacts the electrode 51 to generate an electrical connection (a connecting wire is provided on the fixed terminal 34, and the other end of the connecting guide is connected to the socket end on the outside of the battery box 1).

[0063] Furthermore, if Fig.10 and Fig.11 As shown, an exhaust member 331 is slidably installed on the top of the insulating sealing sleeve 33, and an annular scraper 332 is arranged at the lower end opening of the insulating sealing sleeve 33. The annular scraper 332 is used to scrape off the residual oxides on the electrode 51 during the downward movement of the insulating sealing sleeve 33. A receiving seat 52 is arranged at the bottom of the electrode 51, and an annular receiving groove 5201 is arranged on the receiving seat 52. The receiving groove 5201 can be used to collect the oxides or grease scraped off by the annular scraper 332.

[0064] Among them, by slidingly installing the exhaust part 331 on the top of the insulating sealing sleeve 33, when the insulating sealing sleeve 33 moves downward and is sleeved on the outside of the electrode 51, the gas inside the insulating sealing sleeve 33 can be discharged smoothly. At the same time, since an annular scraper 332 is arranged at the lower end opening of the insulating sealing sleeve 33, when the insulating sealing sleeve 33 moves downward, the annular scraper 332 can scrape down the residual oxide or grease on the outer peripheral surface of the electrode 51, so that the next time the fixed terminal 34 contacts the electrode 51, it can be more stably contacted and energized.

[0065] Furthermore, if Fig.12 As shown, the exhaust member 331 includes a sliding tube 3311 passing through the insulating sealing sleeve 33, and a hemispherical sealing cover 3312 is fixedly installed below the sliding tube 3311. The sealing cover 3312 is used to block the through hole through which the sliding tube 3311 passes during the contact between the top of the inner wall of the insulating sealing sleeve 33 and the top of the electrode 51. A connecting through hole 3313 for connecting with the internal space of the insulating sealing sleeve 33 is provided in the middle of the sliding tube 3311.

[0066] Among them, the sliding tube 3311 is slidably connected with the insulating sealing sleeve 33. When the insulating sealing sleeve 33 moves downward, the air inside the insulating sealing sleeve 33 is discharged from the connecting hole 3313. When the insulating sealing sleeve 33 moves downward to the lowest point, the sealing cover 3312 at the bottom of the sliding tube 3311 abuts against the top of the electrode 51, so that the sealing cover 3312 and the sliding tube 3311 move upward synchronously. At this time, the sealing cover 3312 is in close contact with the inner wall of the top of the insulating sealing sleeve 33, which can prevent outside air from entering the interior of the insulating sealing sleeve 33.

[0067] Furthermore, if Figure 3 and Figure 4 As shown, a support plate 14 is rotatably installed at the bottom of the battery box 1, and a mounting groove for placing the support plate 14 is provided on the base 2. A limiting rod 141 is fixedly installed on the inner wall of the mounting groove, and a strip groove 1401 for the limiting rod 141 to slide is provided on the side of the support plate 14. During the downward movement of the base 2, the support plate 14 is driven downward by the limiting rod 141.

[0068] Among them, by rotatably installing the support plate 14 at the bottom of the battery box 1, the support plate 14 is driven to rotate during the downward movement of the base 2. At this time, the bottom of the support plate 14 can be conveniently supported on the ground, so that the battery box 1 can be more stably supported and placed on an unstable ground when being carried outside.

[0069] Working principle: When using methanol batteries 5 for power supply, first place the battery box 1 on the ground, then insert the external wire into the socket on the battery box 1, and then drive the telescopic rod 13 to extend downward, so that the base 2 moves downward relative to the battery box 1, and the support rod 22 on the side of the base 2 moves downward, and the sliding rod 32 is driven downward, so that the insulating sealing sleeve 33 at the lower end of the sliding rod 32 is sleeved on the outside of the electrode 51. At the same time, the downward movement of the sliding rod 32 will also drive the fixed terminals 34 on both sides of the electrode 51 to move away from each other, which can disconnect the connection between the electrode 51 and the external conductive wire, and can avoid damage to the electrode 51 caused by short-circuiting the external conductive wire during carrying or transportation. At the same time, since the insulating sealing sleeve 33 is sleeved on the outside of the electrode 51 to form a sealed environment, it can reduce the oxidation of the electrode 51 during use and extend the service life of the electrode 51.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable direct methanol fuel cell, characterized in that: include: A battery box (1) having a partition fixedly mounted in the middle, a methanol battery (5) fixedly mounted above the partition, a first air inlet (101) and a second air inlet (102) respectively arranged on the bottom and the partition of the battery box (1), heat dissipation ports (12) arranged on both side walls of the battery box (1), and a radiator (16) fixedly mounted on the inner side of the heat dissipation port (12); The base (2) is installed below the battery box (1) in a floating manner, and is used to support the battery box (1) and control the opening and closing of the first air inlet (101). Sealing plates (21) are fixedly installed on both sides of the base (2). The sealing plates (21) move up and down driven by the base (2) to control the opening and closing of the heat dissipation port (12). A telescopic rod (13) for controlling the position of the base (2) is fixedly installed at the bottom of the battery box (1).

2. A portable direct methanol fuel cell according to claim 1, characterized in that: A plurality of guide plates (11) are fixedly mounted on both sides of the battery box (1), and a slide groove (1101) is provided on the guide plate (11). Four support rods (22) are fixedly mounted on the base (2), and the support rods (22) slide inside the slide groove (1101).

3. A portable direct methanol fuel cell according to claim 2, characterized in that: The side of the guide plate (11) is provided with a guide groove for guiding the sealing plate (21) to move up and down, and the two sides of the sealing plate (21) are respectively located inside the guide grooves on the guide plate (11) for sliding.

4. A portable direct methanol fuel cell according to claim 3, characterized in that: A fixing frame (3) is fixedly installed on the upper part of the battery box (1), and the fixing frame (3) is located above the electrode (51) of the methanol battery (5). An electrode protection component is fixedly installed on the fixing frame (3), and the electrode protection component is used to protect the electrode (51). A lifting frame (4) is slidably installed above the fixing frame (3), and the lifting frame (4) is used to adjust the opening and closing of the electrode protection component.

5. A portable direct methanol fuel cell according to claim 4, characterized in that: The electrode protection assembly comprises a fixed sleeve (31) fixedly mounted on a fixed frame (3), a sliding rod (32) coaxially slidably mounted in the middle of the fixed sleeve (31), the upper portion of the sliding rod (32) being fixedly connected to a lifting frame (4), an insulating sealing sleeve (33) for sleeved on the outer side of the electrode (51) being fixedly mounted below the sliding rod (32), a fixed terminal (34) for conductively connecting to the electrode (51) being suspended below the insulating sealing sleeve (33), a connecting rod for connecting to the fixed sleeve (31) being arranged on the side of the fixed terminal (34), the connecting rod being used to drive the fixed terminal (34) away from the electrode (51) during the descent of the insulating sealing sleeve (33).

6. A portable direct methanol fuel cell according to claim 5, characterized in that: A rotating rod (15) is rotatably installed inside the battery box (1), the middle part of the rotating rod (15) passes through the inside of the battery box (1), and the two ends of the rotating rod (15) respectively extend into the inside of the slide groove (1101) of the guide plate (11), and gears are fixedly installed in the middle part and both ends of the rotating rod (15), and the support rod (22) is provided with a first tooth row (221) on one side of the slide groove (1101), and the rotating rod (15) is driven to rotate by the first tooth row (221) during the up and down movement of the support rod (22), and the rotating rod (15) controls the up and down movement of the lifting frame (4) by rotating.

7. A portable direct methanol fuel cell according to claim 6, characterized in that: The side view projection profile of the lifting frame (4) is an inverted U-shape, and second tooth rows (41) are fixedly mounted on both sides of the lifting frame (4), and the second tooth rows (41) on both sides of the lifting frame (4) are respectively meshed with gears in the middle of the rotating rod (15).

8. A portable direct methanol fuel cell according to claim 7, characterized in that: An exhaust member (331) is slidably mounted on the top of the insulating sealing sleeve (33) up and down, and an annular scraper (332) is provided at the lower opening of the insulating sealing sleeve (33). The annular scraper (332) is used to scrape off residual oxides on the electrode (51) during the downward movement of the insulating sealing sleeve (33). A receiving seat (52) is provided at the bottom of the electrode (51), and an annular receiving groove (5201) is provided on the receiving seat (52).

9. A portable direct methanol fuel cell according to claim 8, characterized in that: The exhaust member (331) comprises a sliding tube (3311) passing through the insulating sealing sleeve (33); a hemispherical sealing cover (3312) is fixedly installed below the sliding tube (3311); the sealing cover (3312) is used to block the through hole through which the sliding tube (3311) passes when the top of the inner wall of the insulating sealing sleeve (33) contacts the top of the electrode (51); and a connecting through hole (3313) for connecting with the internal space of the insulating sealing sleeve (33) is provided in the middle of the sliding tube (3311).

10. A portable direct methanol fuel cell according to claim 9, characterized in that: A support plate (14) is rotatably mounted on the bottom of the battery box (1); a mounting groove for placing the support plate (14) is provided on the base (2); a limit rod (141) is fixedly mounted on the inner wall of the mounting groove; a strip groove (1401) for the limit rod (141) to slide is provided on the side of the support plate (14); when the base (2) moves downward, the limit rod (141) drives the support plate (14) to support downward.

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