Aluminum-air battery monomer structure

Abstract

This invention relates to the field of aluminum-air batteries and discloses a single aluminum-air battery cell structure. Each cell includes a battery casing, an air electrode, a negative terminal, a negative electrode, and an aluminum electrode that can be inserted into the battery casing. Inner grids are provided on both sides of the battery casing, and air channels are formed between the inner grids of adjacent battery casings of multiple cells. Positive terminals are provided on both sides of the battery casing, and the aluminum electrode is connected to the negative electrode through the negative terminal. This provides a single battery cell structure that allows for quick replacement of the aluminum electrode.

Description

Technical Field

[0001] This invention relates to the field of aluminum-air batteries, and more specifically to a single aluminum-air battery cell structure. Background Technology

[0002] As people's demand for energy continues to grow, the quantity of fossil fuels is limited and they also cause environmental pollution. With the continuous advancement of science and technology, many new pollution-free green energy sources have emerged, such as wind energy, solar energy, nuclear energy, biomass energy, and tidal energy. These new energy sources, which are typical representatives, have increasingly significant advantages and benefits in energy conservation and emission reduction, and their application and promotion in the shipping and transportation industry are surging. However, clean energy sources such as solar, wind, and tidal energy are low-density energy sources, and the effectiveness of a single clean energy source is limited. They also all have corresponding technical defects. Aluminum-air batteries, due to their high specific capacity, energy density, and the ease of obtaining air, are considered a promising battery prototype. Aluminum-air batteries have a long-life porous cathode, and their active material comes from the surrounding air. Metal-air batteries are both energy storage tools and fuel cells; they can be used as primary batteries or rechargeable batteries. As long as the fuel metal aluminum is continuously supplied, they can continuously output electrical energy, showing great development potential.

[0003] However, during the operation of aluminum-air batteries, there is often a problem that the operation of replacing negative electrodes of different thicknesses is complicated, resulting in low replacement efficiency of aluminum electrodes. Therefore, it is necessary to provide a battery cell structure that can quickly replace aluminum electrodes. Summary of the Invention

[0004] The present invention aims to provide an aluminum-air battery cell structure that enables rapid replacement of aluminum electrodes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an aluminum-air battery cell structure, wherein each battery cell includes a battery casing, an air electrode, a negative terminal, a negative electrode, and an aluminum electrode that can be inserted into the battery casing. Inner grids are provided on both sides of the battery casing, and an air channel is formed between the inner grids of multiple battery cells adjacent to each other. Positive terminals are provided on both sides of the battery casing, and the aluminum electrode is connected to the negative electrode through the negative terminal.

[0006] Preferably, as an improvement, the negative terminal includes an insulating shell, a spring, a connecting wire, and a conductive spring. The insulating shell is wrapped around the outside of the conductive spring, and the conductive spring is connected to the positive terminal through the connecting wire. The aluminum electrode has a connecting end with a slot. The conductive spring and the slot are engaged and locked together. A spring is located below the conductive spring, and both ends of the spring abut against the conductive spring and the insulating shell, respectively.

[0007] Preferably, as an improvement, the top of the battery casing is detachably connected to a sealing cover, the sealing cover being made of polytetrafluoroethylene rubber, and multiple sealing covers of different sizes are provided.

[0008] Preferably, as an improvement, the battery casing is provided with a flow guide groove, and the end of the flow guide groove is provided with a liquid inlet. The flow guide groove is sloping, and the depth of the flow guide groove increases with the distance from the liquid inlet. The depth of the flow guide groove is the largest when it is connected to the liquid inlet. The flow guide groove runs through the bottom of the entire battery casing, and the width of the flow guide groove is lower than the thickness of the negative electrode.

[0009] Preferably, as an improvement, it also includes a return pipe, an overflow port is provided on the upper part of the battery casing, the overflow port is connected to the return pipe, and a guide strip is provided on the air electrode. The guide strip of the air electrode is connected to the positive terminal, and the guide strip of the air electrode is higher than the overflow port.

[0010] Preferably, as an improvement, each side of the battery casing is provided with at least one fastening mechanism. One side of the fastening mechanism is a protruding structure, and the other side is a recessed structure that engages with the protruding structure. The fastening mechanism structure achieves engagement through the protruding structure and the recessed structure on both sides.

[0011] Preferably, as an improvement, it also includes a vent pipe, and the battery casing is also provided with an exhaust port, which is connected to the vent pipe, and the vent pipe is made of polytetrafluoroethylene material.

[0012] Preferably, as an improvement, the conductive spring has a U-shaped cross-section, the distance between the two ends of the conductive spring is greater than the thickness of the connecting end, and after the connecting end is inserted between the conductive springs, the spring drives the two ends of the conductive springs to clamp the connecting end, and the conductive spring also has a protruding structure in the middle.

[0013] Preferably, as an improvement, it also includes a positive electrode and a positive electrode lead, the height of which is higher than the top of the overflow port.

[0014] Preferably, as an improvement, the front ends of both sides of the conductive spring are provided with a beveled structure.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The aluminum-air battery of the present invention provides a battery reaction chamber structure. By setting an overflow port, the electrolyte reaction area inside the battery cell is ensured. By adjusting the height of the overflow port, the positive electrode lead is kept away from the electrolyte environment, avoiding the problem of corrosion of the positive electrode lead. This avoids the problem of system power failure caused by welding failure between the positive electrode lead and the positive electrode plate due to prolonged battery discharge.

[0017] 2. The aluminum-air battery cell structure of the present invention provides a flow channel structure, which achieves complete return of residual electrolyte in the internal cavity of the battery cell by adjusting the height of the flow channel, thereby avoiding the problem of long-term corrosion of the negative electrode and low discharge efficiency caused by the corrosion of residual electrolyte.

[0018] 3. The aluminum-air battery cell structure of the present invention provides a gas guide tube structure. By adjusting the inner diameter of the front and rear sides of the gas guide tube, the gas guide tube is connected end to end. By improving the material, the gas guide tube and the battery casing are sealed together, thereby ensuring that the hydrogen gas, a by-reaction product of the battery, can be discharged from the battery casing in a timely manner, thus ensuring the stability and reliability of the battery system.

[0019] 4. The aluminum-air battery cell structure of the present invention provides a novel connection structure between the aluminum electrode and the negative electrode, namely, the aluminum electrode is connected through the negative terminal, the outside of the negative terminal is made of insulating material to avoid battery short circuit due to careless operation, and the internal conductive spring and spring are set to facilitate the use of negative electrodes of different thicknesses, and realize the function of quick replacement of negative electrode. Attached Figure Description

[0020] Figure 1 These are a three-dimensional diagram and a left view of the battery cell structure of the present invention;

[0021] Figure 2 This is a front view of the battery cell structure of the present invention;

[0022] Figure 3 The present invention provides a right view and a cross-sectional view of the battery cell structure.

[0023] Figure 4 This is a three-dimensional diagram of the negative terminal of the battery cell of the present invention;

[0024] Figure 5 This is a schematic diagram of the conductive spring structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the spring mounting structure of the present invention. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method:

[0027] The reference numerals in the accompanying drawings include: battery casing 1, air electrode 2, inner grid 3, negative electrode 4, liquid outlet 5, liquid inlet 6, top cover 7, positive terminal 8, vent tube 9, negative terminal 10, fastening mechanism 11, sealing cover 12, positive electrode lead 13, overflow port 14, vent hole 15, connecting wire 16, guide groove 17, spring 18, conductive spring 19, groove 20, insulating shell 21.

[0028] Example

[0029] The implementation examples are basically as follows Figures 1-6 As shown, Figure 1 and Figure 2 The diagram illustrates an aluminum-air battery cell structure. Each cell includes a battery casing 1, an air electrode 2, a negative terminal 10, a negative electrode 4, and an aluminum electrode that can be inserted into the battery casing 1. Inner grids 3 are provided on both sides of the battery casing 1, and air channels can be formed between adjacent inner grids 3 of adjacent cells. The inner grids 3 are used to isolate the positive and negative electrodes 4 and keep the air battery flat, preventing short circuits between the positive and negative electrodes. Air channels are formed between the inner grids 3 of multiple adjacent battery casings 1. Positive terminals 8 are provided on both sides of the battery casing 1. The aluminum electrode is connected to the negative electrode 4 through the negative terminal 10. The air electrode 2 is located inside the inner grids 3. The inner grids 3 are bonded and sealed to the air electrode 2 and the battery casing 1 with alkali-resistant adhesive to ensure that the battery casing 1 does not leak. The structure also includes a positive electrode and a positive electrode lead 13. The height of the positive electrode lead 13 is higher than the top of the overflow port 14. A groove for the positive electrode lead 13 is also provided on the outer side of the inner grids 3, through which the positive electrode lead 13 of the air electrode 2 connects to the outside of the battery cell and to the positive terminal 8.

[0030] like Figure 4 and 6 As shown, in this embodiment, the negative terminal 10 includes an insulating shell 21, a spring 18, a connecting wire 16, and a conductive spring 19. The insulating shell 21 wraps around the conductive spring 19. The conductive spring 19 is connected to the positive terminal 8 via the connecting wire 16. The aluminum electrode has a connecting end with a slot. The conductive spring 19 engages with the slot. The spring 18 is located below the conductive spring 19, with both ends of the spring 18 abutting against the conductive spring 19 and the insulating shell 21, respectively. The conductive spring 19 has a U-shaped cross-section. Figure 5 As shown, the conductive spring 19 has a chamfered shape at the front, a groove 20 with a semi-cylindrical cross section at the top of the conductive spring 19, and a hollow cylinder at the rear. In this embodiment, the distance between the two ends of the conductive spring 19 is greater than the thickness of the connecting end. After the connecting end is inserted between the conductive springs 19, the spring 18 drives the two ends of the conductive spring 19 to clamp the connecting end. The conductive spring 19 also has a protruding structure in the middle, and the front ends of both sides of the conductive spring 19 have inclined structures.

[0031] Support strips are distributed on the upper outer side of the inner grille 3. The middle of the support strip is a gas guide channel. The support strip can fit with the support strip of another adjacent battery cell. One side of the support strip is a raised structure, and the other side is a recessed structure that fits into the raised structure, thus ensuring the flatness of the battery cell spacing. The battery housing 1 is also provided with a top cover 7. The top cover 7 has a rectangular hole. The connecting end is snapped into the rectangular hole. A sealing cover 12 is detachably connected to the rectangular hole. The sealing cover 12 is made of polytetrafluoroethylene rubber. There are multiple sealing covers 12 of different specifications. The sealing covers 12 of different specifications and different negative electrode 4 thicknesses are matched to pass through the rectangular hole, thereby realizing the sealing of the cavity and the function of replacing different negative electrode 4 thicknesses. When using the battery cell, the sealing cover 12 of different thicknesses can be selected, which allows the battery cell to install aluminum electrodes of different thicknesses, reducing the waste of aluminum electrode material. There is also a groove structure 20 below the top cover 7. The groove structure 20 has a sealing ring. The sealing ring seals between the battery housing 1 and the top cover 7, thereby realizing the sealing of the cavity and enabling the function of fast and faster negative electrode 4.

[0032] Each battery casing 1 is provided with a guide groove 17, and an inlet 6 is provided at the end of the guide groove 17. The guide groove 17 is sloping, and the depth of the guide groove 17 increases with the distance from the inlet 6. The depth of the guide groove 17 is the largest when it is connected to the inlet 6. The guide groove 17 runs through the bottom of the entire battery casing 1. The width of the guide groove 17 is less than the thickness of the negative electrode 4. The bottom of the negative electrode 4 and the bottom of the guide groove 17 of the battery casing 1 are flush to ensure that the negative electrode 4 is installed horizontally. An outlet 5 is provided at the bottom of the other side of the battery casing 1. Each side of the battery casing 1 is provided with at least one fastening mechanism 11. One side of the fastening mechanism 11 is a protruding structure, and the other side is a recessed structure that engages with the protruding structure. The fastening mechanism 11 achieves engagement through the protruding and recessed structures on both sides. The inlet 6 transmits the electrolyte to the inside of the inner grid 3 and fills the internal reaction chamber of the battery cell to provide an internal space for battery reaction. In this embodiment, the inlet 6 is a pipe with an inner diameter of 10 mm. The outflow channel of the inlet 6 is connected to the pump outlet to guide the electrolyte into the battery cell. In this embodiment, the guide channel 17 is a reduced flow channel used to guide the electrolyte. Its width and inclined length are adjusted according to the length of the battery cell. If the negative electrode 4 is tilted after installation, the width of the guide channel 17 needs to be adjusted.

[0033] It also includes a return pipe, and an overflow port 14 is provided on the upper part of the battery casing 1. The overflow port 14 is connected to the return pipe. The air electrode 2 is provided with a guide strip, and the guide strip of the air electrode 2 is connected to the positive terminal 8. The guide strip of the air electrode 2 is higher than the overflow port 14. It also includes a positive electrode and a positive electrode lead 13. The height of the positive electrode lead 13 is higher than the top of the overflow port 14. When the positive electrode lead 13 comes into contact with the electrolyte during the reaction, the height of the overflow port 14 from the lower edge of the grid needs to be adjusted to increase the spacing at this point, so as to avoid the positive electrode lead 13 being corroded by the electrolyte and ensure the orderly progress of the battery reaction. In this embodiment, the width of the overflow port 14 is 2.5mm. It can be understood that the width of the overflow port 14 can be, but is not limited to, this value. If the electrolyte cannot be discharged in time after entering the battery casing 1 and liquid overflows from the upper vent 15, the width of the overflow port 14 needs to be adjusted to ensure the stable circulation of the electrolyte. It also includes a vent pipe 9, such as Figure 3 As shown, the battery casing 1 is also provided with an exhaust port 15, which is connected to the gas guide pipe 9. The exhaust port 15 can collect and discharge the hydrogen gas during the discharge process in a timely manner, increasing the reliability of the battery cell. The gas guide pipe 9 has a "T" shaped structure, and the lower part of the gas guide pipe 9 is connected to the exhaust port 15 of the battery casing 1. One side of the outer wall of the gas guide pipe 9 has a protrusion and the other side of the outer wall has a depression. The protruding side of the gas guide pipe 9 is connected to the depression of another cell gas guide pipe 9. The gas guide pipe 9 is made of polytetrafluoroethylene material, which on the one hand realizes the sealing of the gas channel and ensures the collection function of the internal reaction gas.

[0034] 1. The aluminum-air battery of the present invention provides a battery reaction chamber structure. By setting an overflow port 14, the electrolyte reaction area inside the battery cell is ensured. By adjusting the height of the overflow port 14, the positive electrode lead 13 is kept away from the electrolyte environment, avoiding the problem of corrosion of the positive electrode lead 13. This avoids the problem of system power failure caused by welding failure between the positive electrode lead 13 and the positive electrode plate due to prolonged battery discharge.

[0035] 2. The aluminum-air battery cell structure of the present invention provides a flow channel 17 structure. By adjusting the height of the flow channel 17, the residual electrolyte in the internal cavity of the battery cell can be completely returned, thereby avoiding the problem of long-term corrosion of the negative electrode 4 and low discharge efficiency caused by the corrosion of the residual electrolyte.

[0036] 3. The aluminum-air battery cell structure of the present invention provides a gas guide tube 9 structure. By adjusting the inner diameter of the front and rear sides of the gas guide tube 9, the gas guide tube 9 is connected end to end. By improving the material, the gas guide tube 9 and the battery housing 1 are sealed together, thereby ensuring that the hydrogen gas, a by-reaction product of the battery, can be discharged from the battery housing 1 in a timely manner, thus ensuring the stability and reliability of the battery system.

[0037] 4. The aluminum-air battery cell structure of the present invention provides a novel connection structure between the aluminum electrode and the negative electrode 4, namely, the aluminum electrode is connected through the negative terminal 10. The negative terminal 10 is made of insulating material to avoid short circuits caused by improper operation. The internal conductive spring 19 and spring 18 are provided to facilitate the use of negative electrodes 4 of different thicknesses and realize the function of quick replacement of negative electrode 4.

[0038] The above are merely embodiments of the present invention. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A single aluminum-air battery cell structure, characterized in that: Each battery cell includes a battery casing, an air electrode, a negative terminal, a negative electrode, and an aluminum electrode that can be inserted into the battery casing. The battery casing has inner grids on both sides, and air channels are formed between the inner grids of adjacent battery casings of multiple battery cells. The battery casing has positive terminals on both sides, and the aluminum electrode is connected to the negative electrode through the negative terminal.

2. The aluminum-air battery cell structure according to claim 1, characterized in that: The negative terminal includes an insulating shell, a spring, a connecting wire, and a conductive spring. The insulating shell is wrapped around the conductive spring, which is connected to the positive terminal via the connecting wire. The aluminum electrode has a connecting end with a slot. The conductive spring and the slot are engaged and locked together. A spring is located below the conductive spring, with its two ends abutting against the conductive spring and the insulating shell, respectively.

3. The aluminum-air battery cell structure according to claim 2, characterized in that: The top of the battery casing is detachably connected to a sealing cover, which is made of polytetrafluoroethylene rubber and has multiple sealing covers of different sizes.

4. The aluminum-air battery cell structure according to claim 3, characterized in that: Each battery casing has a flow guide groove, with an inlet at the end of the flow guide groove. The flow guide groove is sloping, and its depth increases with the distance from the inlet. The depth is greatest when the flow guide groove is connected to the inlet. The flow guide groove runs through the bottom of the entire battery casing, and its width is less than the thickness of the negative electrode.

5. The aluminum-air battery cell structure according to claim 4, characterized in that: It also includes a return pipe, and an overflow port is provided on the upper part of the battery casing. The overflow port is connected to the return pipe. A guide strip is provided on the air electrode. The guide strip of the air electrode is connected to the positive terminal. The guide strip of the air electrode is higher than the overflow port.

6. The aluminum-air battery cell structure according to claim 5, characterized in that: Each side of the battery casing has at least one fastening mechanism. One side of the fastening mechanism is a protruding structure, and the other side is a recessed structure that engages with the protruding structure. The fastening mechanism achieves engagement through the protruding and recessed structures on both sides.

7. The aluminum-air battery cell structure according to claim 6, characterized in that: It also includes a vent pipe, and the battery casing is also provided with an exhaust port, which is connected to the vent pipe. The vent pipe is made of polytetrafluoroethylene.

8. The aluminum-air battery cell structure according to claim 7, characterized in that: The conductive spring has a U-shaped cross-section. The distance between the two ends of the conductive spring is greater than the thickness of the connecting end. After the connecting end is inserted between the conductive springs, the spring drives the two ends of the conductive springs to clamp the connecting end. The conductive spring also has a protruding structure in the middle.

9. The aluminum-air battery cell structure according to claim 8, characterized in that: It also includes the positive electrode and the positive electrode lead, with the positive electrode lead being higher than the top of the overflow port.

10. An aluminum-air battery cell structure according to claim 9, characterized in that: The conductive spring sheet has beveled structures on both front ends.

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