Aluminum-air fuel cell monomer stack structure and cell

Abstract

The utility model provides an aluminum air fuel cell monomer stack structure and a cell, the aluminum air fuel cell monomer stack structure comprises a monomer shell, a metal electrode assembly and an air electrode assembly, an electrolyte chamber is formed among the monomer shell, the metal electrode assembly and the air electrode assembly, and a water inlet channel communicated with the electrolyte chamber is arranged on the monomer shell. A water wheel capable of increasing water inlet pressure is installed in the water inlet channel and provided with a first connecting end capable of being connected with a power driving piece. According to the structure, electrolyte circulation can be guaranteed to be smoother by adding the water wheels, and the condition of electrolyte blockage is avoided.

Description

Technical Field

[0001] The utility model mainly relates to the technical field related to aluminum-air fuel cells, and specifically is an aluminum-air fuel cell monomer stack structure and a battery. Background Art

[0002] Aluminum-air fuel cells use high-purity aluminum (99.99% aluminum) as the negative electrode, oxygen as the positive electrode, and potassium hydroxide (KOH) or sodium hydroxide (NaOH) aqueous solution as the electrolyte. Aluminum absorbs oxygen from the air, and a chemical reaction occurs when the battery is discharged, and aluminum and oxygen react to convert into aluminum oxide. In a single cell, aluminum (Al) is the negative electrode and oxygen is the positive electrode. There is a pair of auxiliary air electrodes on both sides of the aluminum-air battery, which serve as the positive electrode of the aluminum-air battery and only consume aluminum and a small amount of water during operation.

[0003] In the prior art, such as the related technology of a compartment stack element and a compartment stack assembly for a metal-air battery with announcement number CN 218101460 U, the single body shell has two cavities, and the bottom of each cavity is provided with a short tube for the flow of electrolyte, and the short tube is used for liquid inlet.

[0004] In the prior art, such as in a related technology of an aluminum-air fuel cell monomer with the announcement number CN 217823009 U, a water collecting and distributing main pipe, a liquid inlet pipe, and a liquid outlet pipe are provided for electrolyte circulation.

[0005] The main problem with the existing technology is that the liquid inlet channel is directly connected to the electrolyte cavity. Since the aluminum-air fuel cell will produce reaction deposits during the chemical reaction, the increase of deposits will affect the normal circulation of the electrolyte over time, causing the battery to heat up, clog, etc. In addition, since the battery is composed of a plurality of monomers and uses the same main water inlet channel, the rear monomers are easily affected by the reduction of liquid flow or pressure, which affects the normal circulation of the electrolyte, making the working performance of each battery monomer more different, affecting the power generation effect and service life of the battery. Utility Model Content

[0006] In order to solve the shortcomings of current technology, the utility model combines the existing technology and provides an aluminum-air fuel cell monomer stack structure and a battery from the perspective of practical application. By adding a water wheel, the electrolyte circulation can be ensured to be smoother.

[0007] To achieve the above purpose, the technical solution of the utility model is as follows:

[0008] According to one aspect of the utility model, there is provided an aluminum-air fuel cell monomer stack structure, comprising a monomer shell, a metal electrode assembly, and an air electrode assembly, wherein an electrolyte chamber is formed between the monomer shell, the metal electrode assembly, and the air electrode assembly, and the monomer shell is provided with a water inlet channel connected to the electrolyte chamber, wherein a water wheel capable of increasing the water inlet pressure is installed in the water inlet channel, and the water wheel has a first connecting end capable of connecting to a power drive member.

[0009] Furthermore, the water wheel also has a second connection end, and the second connection end can cooperate with the first connection end to realize torque transmission so that the water wheels of multiple single-cell stack structures can be connected to each other and move synchronously.

[0010] Further, the first connection end is a flat head provided at one end of the water wheel, and the second connection end is a flat mouth provided at the other end of the water wheel;

[0011] Alternatively, the first connection end is a flat port arranged at one end of the water wheel, and the second connection end is a flat head arranged at the other end of the water wheel.

[0012] Furthermore, a long slot is provided at the bottom of the monolithic shell, one end of the long slot is a main water flow channel, and the other end is a water inlet channel. The water wheel is installed in the water inlet channel at the other end, and the axis of the water wheel is parallel to the water flow direction in the main water flow channel.

[0013] Furthermore, water wheel mounting seats are provided at both sides of the long slot corresponding to the water wheel mounting positions, and the water wheel mounting seat on at least one side is detachably connected to the long slot.

[0014] Furthermore, the detachable connection method is a snap connection.

[0015] Furthermore, there are two electrolyte chambers arranged in parallel, and the water inlet channel is connected to both electrolyte chambers.

[0016] According to another aspect of the present invention, a battery is provided, comprising a plurality of the above-mentioned aluminum-air fuel cell monomer stack structures.

[0017] Furthermore, the multiple single cell stack structures are arranged in sequence, the main water flow channels of the multiple single cell stack structures are interconnected, and the water wheels of the multiple single cell stack structures can rotate synchronously under the action of an external power drive component.

[0018] Furthermore, among multiple single-cell stack structures, the first connection end of the water wheel of the subsequent single-cell stack structure is connected to the second connection end of the water wheel of the previous single-cell stack structure, and the water wheel power of the previous single-cell stack structure can be transmitted to the water wheel of the subsequent single-cell stack structure.

[0019] Beneficial effects of the utility model:

[0020] 1. The utility model can increase the water inlet pressure by arranging a water wheel on the water inlet channel. The unique water wheel structure arrangement can start the motor connected to the water wheel to increase the water inlet pressure when there is a blockage or the waterway is not smooth, so as to make the waterway unobstructed, thereby effectively avoiding the problem of poor water circulation caused by precipitation generated by battery reaction.

[0021] 2. In the present invention, the design of the water wheel enables the electrolyte to flow fully inside the battery, solving the problems of heating and clogging. Therefore, the battery cell can be made larger and release more energy.

[0022] 3. In the present invention, the unique water wheel joint design, on the one hand, enables the water wheel to be conveniently connected to the motor, and on the other hand, enables the water wheels to be connected to each other, thereby realizing power transmission. Therefore, after multiple single battery stacks are assembled, only one drive motor is needed to drive the water wheels of all single battery stacks. The overall structural design is simple and reasonable, and does not take up extra space.

[0023] 4. The battery structure provided by the utility model only needs to install a motor on the outermost side, and the motor can drive the various water wheels of the battery to move synchronously, thereby ensuring the smooth circulation of the electrolyte of each single cell stack, making the operating conditions of each single cell as similar as possible, and improving the power generation effect and service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attached Figure 1 This is a cross-sectional view of the internal structure of a battery cell of the present utility model.

[0025] Attached Figure 2 This is a schematic diagram of the structure of one side of a battery cell of the utility model.

[0026] Attached Figure 3 This is a schematic diagram of the structure of the other side of the battery cell of the utility model.

[0027] Attached Figure 4 This is a schematic diagram of the installation position of the water wheel of the utility model.

[0028] Attached Figure 5 It is a structural schematic diagram of the water inlet channel of the utility model.

[0029] Attached Figure 6 It is a structural schematic diagram of one end of the water wheel of the utility model.

[0030] Attached Figure 7 It is a schematic diagram of the structure of the other end of the water wheel of the utility model.

[0031] Attached Figure 8 This is a schematic diagram of the structure of the water wheel mounting seat of the utility model.

[0032] Attached Fig. 9This is a schematic diagram of the assembly structure of multiple battery cells of the utility model.

[0033] 1. Single cell stack; 2. Single cell shell; 3. Air electrode assembly; 4. Metal electrode assembly; 5. Electrolyte chamber; 6. Long slot; 7. Water wheel mounting seat; 8. Water wheel; 9. Water inlet channel; 10. Main water flow channel; 11. Second connection end; 12. First connection end. DETAILED DESCRIPTION

[0034] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0035] Example 1

[0036] This embodiment provides an aluminum-air fuel cell monomer stack structure, and its related schematic diagram is referenced Figure 1-Figure 8 shown.

[0037] The single cell stack 1 of this embodiment mainly includes a single cell shell 2, a metal electrode assembly 4, and an air electrode assembly 3. The metal electrode assembly 4 mainly includes an aluminum plate, and the air electrode assembly 3 mainly includes a positive electrode film. Figure 1 As shown, an electrolyte chamber 5 is formed between the monomer shell 2, the metal electrode assembly 4, and the air electrode assembly 3 for the circulation of electrolyte. The electrolyte flows into the electrolyte chamber 5 through the water inlet channel to make the metal electrode assembly 4 and the air electrode assembly 3 react to generate electrical energy, and the electrolyte is discharged from the corresponding overflow port, thus realizing circulation.

[0038] In this embodiment, a long slot 6 is provided in the middle of the bottom of the monomer shell 2, one end of the long slot 6 is a main water flow channel 10, and the other end is a water inlet channel 9. The electrolyte enters the long slot 6 from the main water flow channel 10, and then flows into the electrolyte chamber 5 through the water inlet channel 9. A water wheel 8 is installed on the water inlet channel 9, which is used to increase the water inlet pressure and has a first connection end 12 that can be connected to a power drive member. In this embodiment, the power drive member can be a motor, which mainly drives the water wheel 8 to rotate through the first connection end 12. As shown in the reference figure, the water wheel 8 is installed in the water inlet channel 9, one end of which is supported by the shell opening of the monomer shell 2, and the other end is supported by the opening on the water wheel mounting seat 7. The water wheel mounting seat 7 is fixed to the outside of the water inlet channel 9 in the monomer shell 2 by a snap connection method, which is convenient for the disassembly and assembly of the water wheel 8. In this embodiment, the axis of the water wheel 8 is parallel to the water flow direction in the main water flow channel 10. When the electrolyte enters the water inlet channel 9 through the main water flow channel 10, the water pressure is increased by the water wheel 8 and then sent to the electrolyte chamber 5 to ensure smooth circulation of the electrolyte.

[0039] Because the aluminum-air fuel cell is actually formed by assembling multiple single cell stacks 1 in sequence, it is necessary to configure a corresponding driving force for each water wheel 8. If each water wheel 8 is configured with a motor, it is not easy to achieve due to the installation space and cost. Therefore, in this embodiment, a second connecting end 11 is also provided at the other end of the water wheel 8, and the second connecting end 11 can be docked and connected with the first connecting end 10, and torque transmission can be achieved after connection. With such a structural design, after multiple single cell stacks 1 are assembled, the first connecting end 10 of the water wheel 8 of the subsequent single cell stack 1 can be connected to the second connecting end 11 of the previous water wheel 8, so that the power of the previous water wheel 8 can be transmitted to the power of the subsequent water wheel 8. In this way, the entire battery only needs one motor to drive it. On the one hand, it can ensure the synchronous movement of the water wheels 8, and on the other hand, it saves installation space and the number of motors used.

[0040] refer to Figure 6 , Figure 7 As shown, the first connection end 12 is a flat mouth arranged at one end of the water wheel 8, and the second connection end 11 is a flat head arranged at the other end of the water wheel 8. The two can realize power transmission by plugging and unplugging, with simple structure and reliable operation.

[0041] Because the structural design of this embodiment can effectively solve the problems of battery heating, electrolyte blockage, and poor circulation, the battery cell can be made larger. In this embodiment, two groups of metal electrode assemblies 4 are arranged side by side in the single body shell 2, thereby forming two electrolyte chambers 5 on the left and right sides to increase the power generation of the battery.

[0042] Example 2

[0043] refer to Fig. 9 As described above, this embodiment provides a battery.

[0044] The battery of this embodiment includes a plurality of single-cell stacks in Embodiment 1 (only two single-cell stacks are shown in the figure).

[0045] In this embodiment, multiple single cell stacks 1 are arranged in sequence, the main water flow channels 10 of the multiple single cell stacks 1 are interconnected, the water wheels 8 are connected in sequence, and the outermost water wheel 8 is connected to a motor. The electrolyte enters the water inlet channel 9 of each single cell stack 1 through the main water flow channel 10, and after being pressurized by each synchronously moving water wheel 8, it enters the electrolyte chamber 5 of the corresponding single cell stack 1. In this battery structure, the water wheel 8 can increase the water inlet pressure, effectively avoid the problem of electrolyte blockage, ensure the smooth circulation of the electrolyte, and avoid battery heating.

Claims

1. An aluminum-air fuel cell monomer stack structure, comprising a monomer shell, a metal electrode assembly, and an air electrode assembly, wherein an electrolyte chamber is formed between the monomer shell, the metal electrode assembly, and the air electrode assembly, and a water inlet channel connected to the electrolyte chamber is provided on the monomer shell, characterized in that: A water wheel capable of increasing the water inlet pressure is installed in the water inlet channel, and the water wheel has a first connection end that can be connected to a power drive member; the water wheel also has a second connection end, and the second connection end can cooperate with the first connection end to achieve torque transmission so that the water wheels of multiple single battery stack structures can be connected to each other and move synchronously; The first connection end is a flat head provided at one end of the water wheel, and the second connection end is a flat mouth provided at the other end of the water wheel; or, the first connection end is a flat mouth provided at one end of the water wheel, and the second connection end is a flat head provided at the other end of the water wheel; The bottom of the monocoque is provided with a long slot, one end of which is a main water flow channel and the other end is a water inlet channel. The water wheel is installed in the water inlet channel at the other end, and the axis of the water wheel is parallel to the water flow direction in the main water flow channel; Water wheel mounting seats are arranged at the water wheel mounting positions on both sides of the long slot, and the water wheel mounting seat on at least one side is detachably connected to the long slot; The detachable connection method is a snap connection; There are two electrolyte chambers arranged in parallel, and the water inlet channel is connected to both electrolyte chambers.

2. A battery, characterized in that: It comprises a plurality of aluminum-air fuel cell monomer stack structures as described in claim 1.

3. The battery according to claim 2, characterized in that The multiple single cell stack structures are arranged in sequence, the main water flow channels of the multiple single cell stack structures are interconnected, and the water wheels of the multiple single cell stack structures can rotate synchronously under the action of an external power drive component.

4. The battery according to claim 3, characterized in that In multiple single-cell stack structures, the first connection end of the water wheel of the subsequent single-cell stack structure is connected to the second connection end of the water wheel of the previous single-cell stack structure, and the water wheel power of the previous single-cell stack structure can be transmitted to the water wheel of the subsequent single-cell stack structure.

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