High-capacity aluminum air battery module

Abstract

The invention discloses a high-capacity aluminum-air battery module, and relates to the field of aluminum-air batteries, the high-capacity aluminum-air battery module comprises a plurality of single batteries which are arranged above an electrolyte tank side by side, and liquid outlets and liquid inlets of the single batteries are respectively and correspondingly communicated with an outlet interface and an inlet interface at the top of the electrolyte tank; an electrolyte tank liquid outlet and an electrolyte tank liquid inlet are formed in the two sides of the electrolyte tank; the plurality of dovetail connection structures are respectively arranged between the adjacent battery monomers; the plurality of busbars are respectively arranged on the two sides and the tops of the plurality of battery monomers, and each busbar is respectively connected with the positive electrode tab or the negative electrode tab on the same straight line; according to the battery module, the overall connection strength of the battery module is greatly improved, matching of a system voltage platform is facilitated, and the high-power discharge requirement of a system is met.

Description

Technical Field

[0001] This invention belongs to the field of aluminum-air batteries, and more specifically, relates to a high-capacity aluminum-air battery module. Background Technology

[0002] Aluminum-air batteries have attracted widespread attention in off-grid or mobile scenarios such as emergency power supplies, drones, and communication base stations due to their high energy density, low cost, and good safety. However, existing aluminum-air battery modules still face the following bottlenecks when applied to high-power applications: 1. Low energy density and space utilization Traditional aluminum-air modules are limited by the capacity of individual units, resulting in an energy density of generally less than 160 Wh·kg when assembled into a module. -1 Furthermore, the irregular shape of the individual units and the redundant positioning of the slots result in a system volumetric energy density of <120 Wh·L. -1 This makes it difficult to meet the compact layout requirements of equipment with a power of 1 kW or more; 2. Poor electrolyte circulation efficiency and low aluminum utilization rate. Existing single-cell modules generally adopt a single reaction chamber + single liquid inlet structure. CFD simulation shows that in the later stage of liquid injection, a main vortex with a diameter of ≈30 mm is formed inside the chamber. The fresh electrolyte renewal rate is less than 40%, which leads to a "dead zone" in the aluminum anode in the vortex zone. The anode utilization rate is only 65% ​​to 70%, which directly reduces the actual discharge capacity of the module. 3. Insufficient reliability of mechanical connections The individual units rely on upper and lower slots for positioning, without rigid interlocking; after accumulating processing and assembly errors, misalignment at the ±0.5 mm level is prone to occur, causing batch assembly interference; at the same time, the slots only provide positioning function and do not contribute to the module's vibration and torsional resistance, and the loosening rate after transportation and working vibration is >5%; 4. High risk of fluid circuit interface seal failure The current solution uses PVC flexible tubing and clamps for fastening, with a line seal at the contact surface; the aluminum-air battery operates at 45℃~55℃, and the reaction byproduct is NaAl(OH)₂. Crystals tend to deposit at the pipe inlet. If the clamps loosen during secondary maintenance, leakage or even detachment will occur, resulting in a system failure rate of >2% / 1000 h.

[0003] The combination of these defects means that existing aluminum-air battery modules cannot simultaneously achieve the three core indicators of "high energy density, high power output, and high sealing reliability," which severely restricts their large-scale application in high-power scenarios of 5 kW and above. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a high-capacity aluminum-air battery module. This battery module includes multiple battery cells connected in parallel on an electrolyte cell. The battery cells are connected by a dovetail connection structure, and the positive and negative electrode tabs of all battery cells are connected together by a busbar, forming a structure with positive electrodes on both sides and negative electrodes on the top of the module. This greatly improves the overall connection strength of the battery module, makes it easier to match the system voltage platform, and meets the high-power discharge requirements of the system.

[0005] To achieve the above objectives, the present invention provides a high-capacity aluminum-air battery module, comprising: Multiple battery cells are arranged side by side above the electrolyte pool. The outlet and inlet of each battery cell are respectively connected to the outlet and inlet interfaces at the top of the electrolyte pool. The electrolyte pool has an outlet and an inlet on both sides. Multiple dovetail connection structures are respectively disposed between adjacent battery cells; Multiple busbars are respectively disposed on both sides and top of multiple battery cells, and each busbar is connected to a positive electrode tab or a negative electrode tab located on the same straight line.

[0006] Preferably, the battery cell comprises: The reaction vessel has two positive electrode assemblies on each side. The positive electrode assemblies are disposed in the electrical limit grooves of the reaction vessel and form two interconnected first reaction chambers and second reaction chambers inside the reaction vessel. The negative electrode assembly includes a top structural member and an aluminum electrode sheet that are connected to each other. The lower flange face of the top structural member is in contact with the upper flange face of the flange structure of the reaction vessel. A sealing ring is provided between the lower flange face of the top structural member and the upper flange face of the flange structure of the reaction vessel. The aluminum electrode sheet is respectively inserted into the first reaction chamber and the second reaction chamber. The negative electrode tab is located on the top of the top structural member. A negative electrode tab is respectively disposed above the first reaction chamber and the second reaction chamber.

[0007] Preferably, one liquid outlet is provided at each end of the reaction container, and multiple liquid inlets are evenly arranged in the middle of the reaction container. The height of the liquid inlet located in the middle is one-third of the height of the first reaction chamber and the second reaction chamber. Dovetail groove structures are provided on both sides of the reaction container, and the dovetail groove structures are bonded to the dovetail connecting structure.

[0008] Preferably, the liquid inlet is provided with a flow guiding structure and a vortex blocking structure at one end inside the reaction vessel.

[0009] Preferably, the reaction vessel is further provided with a reaction chamber reinforcement structure, which is located between the two positive electrode assemblies.

[0010] Preferably, two positive electrode assemblies are provided on each side of the reaction vessel in the horizontal direction, and a first positive electrode tab and a second positive electrode tab are provided at the ends of the positive electrode assemblies on each side that are far apart from each other. The surface of the positive electrode assembly is provided with a waterproof and breathable layer.

[0011] Preferably, the reaction vessel is provided with embedded fixing members on both sides, and the busbars on both sides are respectively disposed between the embedded fixing members and the first positive electrode tab and between the embedded fixing members and the second positive electrode tab.

[0012] Preferably, the electrolyte tank includes a lower shell and an upper shell, the lower shell and the upper shell are glued together to form a chamber, the chamber includes an outlet pool on both sides and an inlet pool in the middle, the outlet port and the inlet port are both located on the upper shell, and the outer periphery of the outlet port and the inlet port is provided with a groove sealing structure, the groove sealing structure cooperating with the boss sealing structure on the outlet port and the inlet port.

[0013] Preferably, both the electrolyte pool outlet and the electrolyte pool inlet are quick-connect male terminals, which mate with the quick-connect female terminals on the pipeline components in the electrolyte circulation system.

[0014] Preferably, the reaction vessel is provided with three liquid inlets.

[0015] This invention provides a high-capacity aluminum-air battery module, the advantages of which are: 1. Compared with the current technology, the high-power aluminum-air battery module structure design of today not only increases the energy density of the module, but also improves the space utilization of the aluminum-air battery system. Multiple battery cells are arranged side by side and connected to a single electrolyte pool to the maximum extent, thereby expanding the application fields of the battery module. 2. The existing aluminum-air battery integrated cell is redesigned from a single reaction chamber into an interconnected first and second reaction chamber, forming a series-connected aluminum-air battery integrated cell. This increases the fluidity of the electrolyte. Three inlets are set at the bottom of the battery cell, which also improves the circulation efficiency of fresh electrolyte, reduces the size of eddies, and allows the aluminum electrode to fully react with the electrolyte, improving the utilization rate of the aluminum sheet. In addition, the centrally located inlet has a long opening structure at the end inside the battery cell, which allows the electrolyte to enter the reaction chamber in advance, making the reaction of each aluminum-air battery integrated cell in the high-power aluminum-air battery module more uniform. 3. Adjacent battery cells are connected by a dovetail connection structure and a dovetail groove structure. This avoids interference problems in the assembly process, better ensures the integrity of the aluminum-air battery integrated cells, and increases the overall structural strength of the module. 4. The inlet and outlet interfaces of the electrolyte pool in this battery module are equipped with groove sealing structures, and the inlet and outlet interfaces of the individual battery cells are equipped with boss sealing structures. This groove and boss design greatly increases the sealing performance of each interface. Then, the external glue treatment is applied to ensure the structural strength and further improve the sealing performance. 5. The electrolyte inlet and outlet of the electrolyte cell in this battery module adopts a quick-connect plug design, which not only facilitates the assembly and connection of external pipeline interfaces, but also improves the system sealing performance, and directly reduces the use of clamps, thereby reducing costs. 6. The positive and negative electrode tabs of the battery cells in this battery module are connected to the busbar by bolt fixing, which can ensure sufficient current carrying space. The multiple battery cells in this battery module can be flexibly connected in series and parallel, which can flexibly match the system voltage and meet the high power discharge requirements of the system. At the same time, the electrode tabs are placed outside the busbar, which also facilitates the detection and acquisition of various data here. 7. The flow guiding structure and eddy current blocking structure in this battery module work together to minimize the generation of eddies in the electrolyte in the reaction chamber. Especially at the electrolyte inlet, it can ensure that the electrolyte flowing into the reaction vessel is in full contact with the reaction aluminum plate, effectively ensuring the utilization rate of the aluminum sheet, which is of great significance for improving the power generation of the battery module.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0018] Figure 1An exploded view of components of a high-capacity aluminum-air battery module according to an embodiment of the present invention is shown.

[0019] Figure 2 An exploded view of a battery cell according to an embodiment of the present invention is shown.

[0020] Figure 3 A schematic diagram of the structure of a reaction vessel according to an embodiment of the present invention is shown.

[0021] Figure 4 It shows Figure 3 Side view.

[0022] Figure 5 It shows Figure 4 A sectional view along the AA direction.

[0023] Figure 6 A schematic diagram of two positive electrode assemblies located on the same side of a reaction vessel according to an embodiment of the present invention is shown.

[0024] Figure 7 A schematic diagram of the structure of a negative electrode assembly according to an embodiment of the present invention is shown.

[0025] Figure 8 A schematic diagram of the external structure of a high-capacity aluminum-air battery module according to an embodiment of the present invention is shown.

[0026] Figure 9 It shows Figure 8 Enlarged view of point B.

[0027] Figure 10 It shows Figure 8 Enlarged view of point C.

[0028] Figure 11 A schematic diagram of the internal structure of an electrolyte cell according to an embodiment of the present invention is shown.

[0029] Figure 12 It shows Figure 11 Top view.

[0030] Figure 13 A schematic diagram showing the positions of a battery cell and an electrolyte cell according to an embodiment of the present invention is provided.

[0031] Figure 14 It shows Figure 13 Enlarged view of point D.

[0032] Figure 15 A schematic diagram showing the connection of the electrolyte cell and the piping assembly in the electrolyte circulation system according to an embodiment of the present invention is provided.

[0033] Figure 16 It shows Figure 15 Enlarged view of point E.

[0034] Figure 17 A schematic diagram of a dovetail joint structure according to an embodiment of the present invention is shown.

[0035] Explanation of reference numerals in the attached figures: 1. Battery cell; 11. Reaction container; 111. Liquid outlet; 112. Liquid inlet; 113. Dovetail groove structure; 114. First reaction chamber; 115. Groove sealing structure; 116. Flow guiding structure; 117. Vortex blocking structure; 118. Reaction chamber reinforcement structure; 119. Second reaction chamber; 1110. Embedded fixing component; 1111. Flange structure; 1112. Electrical limit groove; 12. Positive electrode assembly; 121. First positive electrode tab; 122. Waterproof and breathable layer; 123. Second positive electrode 13. Negative electrode assembly; 131. Top structural component; 132. Sealing ring; 133. Aluminum electrode sheet; 134. Negative electrode tab; 2. Electrolyte tank; 21. Groove sealing structure; 22. Outlet tank; 23. Inlet tank; 24. Lower shell; 25. Upper shell; 26. Electrolyte tank outlet; 27. Electrolyte tank inlet; 28. Inlet interface; 29. ​​Outlet interface; 210. Quick-connect male terminal; 3. Busbar; 4. Dovetail connection structure; 5. Piping assembly; 51. Quick-connect female terminal. Detailed Implementation

[0036] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0037] like Figure 1 As shown, the present invention provides a high-capacity aluminum-air battery module, comprising: Multiple battery cells 1 are arranged side by side above the electrolyte tank 2. The outlet 111 and inlet 112 of the battery cells 1 are respectively connected to the outlet interface 29 and inlet interface 28 at the top of the electrolyte tank 2. The electrolyte tank 2 is provided with an electrolyte tank outlet 26 and an electrolyte tank inlet 27 on both sides. Multiple dovetail connection structures 4 are respectively arranged between adjacent battery cells 1; Multiple busbars 3 are respectively disposed on both sides and top of multiple battery cells 1, and each busbar 3 is connected to the positive electrode tab or negative electrode tab 134 located on the same straight line.

[0038] Specifically, the battery module includes multiple battery cells 1, an electrolyte tank 2, multiple busbars 3, and multiple dovetail connection structures 4. The multiple battery cells 1 are vertically arranged on the electrolyte tank 2, and adjacent battery cells 1 are connected by dovetail connection structures 4. This ensures the relative position between the battery cells 1 and allows multiple battery cells 1 to form an integral structure connected to the electrolyte tank 2, ensuring the positional relationship and connection strength between the battery cells 1 and the electrolyte tank 2. Since the battery cells 1 have positive electrode tabs on both sides and negative electrode tabs 134 on the top, the busbars 3 are respectively located on both sides and the top of the entire battery module, thus forming positive connection points on the sides and negative connection points on the top, which facilitates the overall use of the battery module.

[0039] like Figure 2 and Figure 7 As shown, the battery cell 1 includes: The reaction vessel 11 has two positive electrode assemblies 12 on each side. The positive electrode assemblies 12 are disposed in the electrical limit grooves 1112 of the reaction vessel 11. The positive electrode assemblies 12 form two interconnected first reaction chambers 114 and second reaction chambers 119 inside the reaction vessel 11. The negative electrode assembly 13 includes a top structural member 131 and an aluminum electrode 133 connected to each other. The lower flange face of the top structural member 131 is in contact with the upper flange face of the flange structure 1111 of the reaction vessel 11. A sealing ring 132 is provided between the lower flange face of the top structural member 131 and the upper flange face of the flange structure 1111 of the reaction vessel 11. The aluminum electrode 133 is respectively inserted into the first reaction chamber 114 and the second reaction chamber 119. The negative electrode tab 134 is provided on the top of the top structural member 131. A negative electrode tab 134 is respectively provided above the first reaction chamber 114 and the second reaction chamber 119.

[0040] Specifically, each battery cell 1 consists of a reaction container 11, a positive electrode assembly 12, and a negative electrode assembly 13. The positive electrode assemblies 12 are respectively disposed on both sides of the reaction container 11, and the negative electrode assembly 13 is inserted and connected from the top of the reaction container 11. Two positive electrode assemblies 12 are respectively disposed on both sides of the reaction container 11, and the positive electrode assemblies 12 on both sides are installed one-to-one. In this way, when the positive electrode assembly 12 is installed into the limit groove 1112 and fixed by filling the surrounding gaps with glue, a first reaction chamber 114 and a second reaction chamber 119 that are interconnected are formed in the reaction container 11. The negative electrode assembly 13 is inserted and installed from the top of the reaction container 11. The negative electrode assembly 13 consists of a top structure and two aluminum electrode sheets 1 The connection is formed as follows: when the negative electrode assembly 13 is inserted into the reaction container 11, the aluminum electrode 133 is inserted into the first reaction chamber 114 and the second reaction chamber 119 respectively. The top structure is attached and fixed to the upper part of the reaction container 11. The lower flange surface of the top structure is attached to the upper flange surface of the flange structure 1111 on the upper part of the reaction container 11, and is installed by interference fit through the sealing ring 132 to ensure the limiting and fixing between the top structure and the reaction container 11. In addition, two negative electrode tabs 134 are provided on the upper side of the top structure. The negative electrode tabs 134 are arranged one-to-one with the aluminum electrode 133. In this way, the two negative electrode tabs 134 in the battery cell 1 are respectively arranged vertically and vertically with the first reaction chamber 114 and the second reaction chamber 119.

[0041] like Figures 3 to 5 As shown, there is one liquid outlet 111 at each end of the reaction container 11, and multiple liquid inlets 112 are evenly arranged in the middle of the reaction container 11. The height of the liquid inlet 112 located in the middle is one-third of the height of the first reaction chamber 114 and the second reaction chamber 119. Dovetail groove structures 113 are respectively provided on both sides of the reaction container 11, and the dovetail groove structures 113 are bonded to the dovetail connecting structure 4.

[0042] Preferably, the reaction vessel 11 is provided with three liquid inlets 112.

[0043] Specifically, in the reaction vessel 11, the outlet 111 is located at both ends of the bottom, and the inlet 112 is located in the middle of the bottom. The inlets 112 on both sides are respectively located corresponding to the aluminum electrode 133 in the reaction vessel 11, and the inlet 112 in the middle is located between the two aluminum electrode 133. This allows the electrolyte passing through each inlet 112 to react fully with the aluminum electrode 133. Moreover, the height of the inlet 112 in the middle is one-third of the height of the two reaction chambers. Combined with the flow guiding structure 116 and the eddy current blocking structure 117, the size of the eddy current in the electrolyte in the reaction chamber can be reduced, and the reaction efficiency of the aluminum electrode 133 can be improved. The flow guiding structure 116 also facilitates the outflow of aluminum-air battery reactants and prevents obstruction of electrolyte circulation in and out.

[0044] like Figure 10 and Figure 17 As shown, a dovetail groove structure 113 is formed on the outer side of the reaction vessel 11. After two adjacent battery cells 1 are positioned, they can be connected and fixed by the end of the dovetail connecting structure 4 and the dovetail groove structure 113, thus ensuring the integrity of all battery cells 1 in the battery module.

[0045] Preferably, the liquid inlet 112 is provided with a flow guiding structure 116 and a vortex blocking structure 117 at one end inside the reaction vessel 11.

[0046] Specifically, the flow guiding structure 116 adopts a vertical direct flow channel design, the length and width of which can be adjusted according to the actual flow rate; the vortex blocking structure 117 adopts a symmetrical design, with one side being a right-angled trapezoidal structure, and the spacing and size of the right-angled trapezoids in the middle are adjustable. The working principle of the two structures is as follows: the flow guiding structure 116 strengthens the stiffness of the electrolyte fluid at the middle inlet, generating an impact flow and avoiding cross-flow and turbulence with the electrolyte at the two side inlets; while the vortex blocking structure 117 effectively diverts the inlet electrolyte, forming three fluid streams that influence each other in a small area, thus reducing the overall vortex area at the inlet.

[0047] Preferably, the reaction container 11 is further provided with a reaction chamber reinforcement structure 118, which is located between the two positive electrode assemblies 12.

[0048] Specifically, the reaction container 11 is also provided with two reaction chamber reinforcement structures 118. The reinforcement structure is a mesh structure. The positive electrode assembly 12 is installed according to the position of the reaction chamber reinforcement structure 118. In this way, the reaction chamber reinforcement structure 118 can support the positive electrode assembly 12 on both sides, ensuring that there is enough space in the two reaction chambers for the aluminum electrode sheet 133 and the electrolyte to react.

[0049] like Figure 6As shown, two positive electrode assemblies 12 are respectively arranged on each side of the reaction vessel 11 along the horizontal direction. Each side of the positive electrode assembly 12 has a first positive electrode tab 121 and a second positive electrode tab 123 respectively arranged at the ends that are far apart from each other. A waterproof and breathable layer 122 is provided on the surface of the positive electrode assembly 12.

[0050] Specifically, two positive electrode assemblies 12 are provided on one side of the reaction container 11. Each positive electrode assembly 12 includes a waterproof and breathable layer 122 and a positive electrode tab. The positive electrode tab is located on the outside of the waterproof and breathable layer 122. When the positive electrode assembly 12 is bonded to the reaction container 11, the positive electrode tab is located on both sides of the battery cell 1. When the four positive electrode assemblies 12 are bonded to the corresponding sides of the reaction container 11, a first positive electrode tab 121 and a second positive electrode tab 123 are formed on both sides of the reaction container 11, respectively. As a positive electrode output structure, the waterproof and breathable layer 122 can prevent the electrolyte from leaking out of the reaction chamber, while satisfying the requirement of external oxygen to enter the aluminum-air battery reaction.

[0051] like Figures 8 to 9 As shown, the reaction vessel 11 is provided with embedded fixing members 1110 on both sides, and the busbars 3 on both sides are respectively located between the embedded fixing members 1110 and the first positive electrode tab 121 and between the embedded fixing members 1110 and the second positive electrode tab 123.

[0052] Specifically, the busbar 3 connected to the positive electrode tab is respectively disposed between the reaction vessel 11 and the positive electrode tab. An embedded fixing member 1110 is disposed on both sides of the reaction vessel 11, and the embedded fixing member 1110 is disposed opposite to the positive electrode tab. The busbar 3 is disposed on both sides between the embedded fixing member 1110 and the first positive electrode tab 121 and between the embedded fixing member 1110 and the second positive electrode tab 123, respectively, and is fixed by bolts to ensure the reliability of the electrical connection, avoid abnormal temperature points, and ensure the safety performance of the system.

[0053] In addition, two negative electrode tabs 134 are provided on the top structure of the negative electrode assembly 13. After all the battery cells 1 are installed on the electrolyte pool 2, the two busbars 3 can connect the two rows of negative electrode tabs 134 on the top of the battery module to form two negative electrode output structures of the battery module.

[0054] like Figures 11 to 14As shown, the electrolyte tank 2 includes a lower shell 24 and an upper shell 25. The lower shell 24 and the upper shell 25 are glued together to form a chamber. The chamber includes an outlet tank 22 on both sides and an inlet tank 23 in the middle. The outlet port 29 and the inlet port 28 are both located on the upper shell 25. The outer periphery of the outlet port 29 and the inlet port 28 is provided with a groove sealing structure 21. The groove sealing structure 21 cooperates with the boss sealing structure on the outlet port 111 and the inlet port 112.

[0055] like Figures 15 to 16 As shown, both the outlet 111 and inlet 112 of the electrolyte tank 2 are quick-connect male terminals 210, which are matched with the quick-connect female terminals 51 on the pipeline assembly 5 in the electrolyte circulation system.

[0056] Specifically, the electrolyte tank 2 consists of a lower shell 24, an upper shell 25, and a quick-connect male terminal 210. The lower shell 24 and the upper shell 25 are glued together to form a whole, thus forming two outlet tanks 22 and one inlet tank 23 inside. The upper shell 25 and the quick-connect male terminal 210 are integrally injection molded. The upper shell 25 integrates an outlet port 29 and an inlet port 28, which facilitates the assembly and installation of the outlet port 111 and inlet port 112 of the battery cell 1. A groove sealing structure 21115 is provided on the outer periphery of the outlet port 29 and the inlet port 28, and a boss sealing structure is provided on the outer periphery of the inlet port 112 of the battery cell 1. The two sealing structures are tightly sealed. The modules are fitted together to increase the overall sealing performance of the single module. Then, glue is applied to the sealing area to further improve the sealing performance and ensure the structural strength of the module. The quick-connect male terminal 210 is located on both sides of the upper housing 25. The middle quick-connect male terminal 210 on both sides serves as the inlet of the electrolyte pool 2, and the left and right quick-connect male terminals 210 on both sides serve as the outlet of the electrolyte pool 2. The electrolyte pool 2 is directly connected to the electrolyte circulation system as a transfer pool in the electrolyte circulation system. It is directly connected to the quick-connect female terminal 51 on the system pipeline component 5 in the electrolyte circulation system through the quick-connect male terminal 210, ensuring reliable sealing and convenient assembly.

[0057] In summary, during the use of this battery module, the electrolyte enters the electrolyte pool 2 from the pipeline assembly 5 and then enters different battery cells 1 through the inlet interface 28. Since the inlet 112 is located inside the reaction container 11 and is equipped with a flow guiding structure 116 and a vortex blocking structure 117, the electrolyte entering the reaction container 11 can fully react with the aluminum electrode 133. After the reaction, the electrolyte flows out of the reaction container 11 from the outlets 111 on both sides. At this time, the busbars 3 on both sides and the busbar 3 at the top can form positive and negative outputs. After the electrolyte flows back from the reaction container 11 to the electrolyte pool 2 at the bottom, it finally flows back to the electrolyte circulation system through the outlet 111 of the electrolyte pool 2.

[0058] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A large capacity aluminum-air battery module, characterized by comprising: include: Multiple battery cells (1) are arranged side by side above the electrolyte pool (2). The outlet (111) and inlet (112) of the battery cells (1) are respectively connected to the outlet interface (29) and inlet interface (28) at the top of the electrolyte pool (2). The electrolyte pool (2) is provided with an electrolyte pool outlet (26) and an electrolyte pool inlet (27) on both sides. Multiple dovetail connection structures (4) are respectively disposed between adjacent battery cells (1); Multiple busbars (3) are respectively disposed on both sides and top of multiple battery cells (1), and each busbar (3) is connected to a positive electrode tab or a negative electrode tab (134) located on the same straight line.

2. The large capacity aluminum-air battery module according to claim 1, wherein The battery cell (1) includes: The reaction vessel (11) has two positive electrode assemblies (12) on each side. The positive electrode assembly (12) is located in the electrical limit groove (1112) of the reaction vessel (11). The positive electrode assembly (12) forms two interconnected first reaction chambers (114) and second reaction chambers (119) inside the reaction vessel (11). The negative electrode assembly (13) includes a top structural member (131) and an aluminum electrode sheet (133) connected to each other. The lower flange face of the top structural member (131) is in contact with the upper flange face of the flange structure (1111) of the reaction vessel (11). A sealing ring (132) is provided between the lower flange face of the top structural member (131) and the upper flange face of the flange structure (1111) of the reaction vessel (11). The aluminum electrode sheet (133) is respectively inserted into the first reaction chamber (114) and the second reaction chamber (119). The negative electrode tab (134) is located on the top of the top structural member (131). A negative electrode tab (134) is provided above the first reaction chamber (114) and the second reaction chamber (119).

3. The large capacity aluminum-air battery module according to claim 2, wherein The liquid outlet (111) is provided at each end of the reaction container (11), and a plurality of liquid inlets (112) are evenly arranged in the middle of the reaction container (11). The height of the liquid inlet (112) located in the middle is one-third of the height of the first reaction chamber (114) and the second reaction chamber (119). Dovetail groove structures (113) are provided on both sides of the reaction container (11), and the dovetail groove structures (113) are bonded to the dovetail connecting structure (4).

4. The large capacity aluminum-air battery module according to claim 3, wherein The liquid inlet (112) is provided with a flow guiding structure (116) and a vortex blocking structure (117) at one end inside the reaction vessel (11).

5. The high-capacity aluminum-air battery module of claim 3, wherein, The reaction container (11) is also provided with a reaction chamber reinforcement structure (118), which is located between the two positive electrode assemblies (12).

6. The high-capacity aluminum-air battery module of claim 2, wherein, The positive electrode assembly (12) is provided with two on each side of the reaction container (11) in the horizontal direction, and the ends of the positive electrode assembly (12) on each side are provided with a first positive electrode tab (121) and a second positive electrode tab (123) respectively, and the surface of the positive electrode assembly (12) is provided with a waterproof and breathable layer (122).

7. The high-capacity aluminum-air battery module of claim 6, wherein, The reaction container (11) is provided with an inlaid fixing part (1110) on each side, and the bus bars (3) on the two sides are arranged between the inlaid fixing parts (1110) and the first positive electrode tabs (121) and between the inlaid fixing parts (1110) and the second positive electrode tabs (123) respectively.

8. The high capacity aluminum-air battery module of claim 1, wherein, The electrolyte tank (2) comprises a lower shell (24) and an upper shell (25), the lower shell (24) and the upper shell (25) form a cavity by adhesive bonding, the cavity comprises liquid outlet tanks (22) arranged on both sides and a liquid inlet tank (23) arranged in the middle, the outlet interface (29) and the inlet interface (28) are arranged on the upper shell (25), the outer periphery of the outlet interface (29) and the inlet interface (28) is provided with a groove sealing structure (21), and the groove sealing structure (21) is matched with the boss sealing structure (115) on the liquid outlet (111) and the liquid inlet (112).

9. The high capacity aluminum-air battery module of claim 1, wherein, The electrolyte tank liquid outlet (26) and the electrolyte tank liquid inlet (27) are both male fast plug connection interfaces (210), and the male fast plug connection interfaces (210) are matched with female fast plug connection interfaces (51) on the pipeline assembly (5) in the electrolyte circulation system.

10. The high capacity aluminum-air battery module of claim 3, wherein, The reaction container (11) is provided with three liquid inlets (112).

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