Monomer aluminum air cell stack

Abstract

The utility model discloses a single aluminum-air battery stack which consists of a plurality of single aluminum-air battery shells with the same structure and size and an elastomer sealing ring, the single aluminum-air battery shell comprises an upper liquid inlet, an upper liquid outlet, a lower liquid inlet, a lower liquid outlet, a screw rod mounting hole and a reaction area; the outer sides of the upper liquid outlet and the lower liquid outlet are respectively provided with an annular table for placing an elastomer sealing ring, and the inner sides of the upper liquid inlet and the lower liquid inlet are respectively provided with an annular table matched with the elastomer sealing ring; the plurality of single aluminum-air battery shells are horizontally stacked, and the upper liquid outlet and the lower liquid outlet of the lower single aluminum-air battery shell are correspondingly inserted into the upper liquid inlet and the lower liquid inlet of the upper single aluminum-air battery shell; and the screw rods sequentially penetrate through the screw rod mounting holes to fasten the plurality of single aluminum-air battery shells. The sealing structure is stable, high in production efficiency, convenient to assemble and flexible in galvanic pile grouping.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery technical field, concretely relates to a single aluminum air battery stack. BACKGROUND

[0002] Aluminum air battery is a new type of fuel cell, has the advantages such as energy storage safety, high specific energy, long life, fast charging, convenient comprehensive recovery etc. Aluminum air battery power generation device is mainly composed of aluminum air battery stack, electrolyte storage system, electrolyte circulation system, power management system etc. Among them, aluminum air battery stack is the core component of chemical energy conversion into electrical energy, and aluminum air battery stack is connected by multiple single batteries, and there is not only mutual connection circuit between single batteries, but also mutual communication electrolyte circulation pipeline.

[0003] At present, the electrolyte used in high-power aluminum air battery is a strong alkaline solution, and the high-temperature strong alkaline electrolyte requires high sealing performance and material stability of the battery stack during battery operation. Looking at the current industry situation, the battery stack electrolyte leakage is still a common problem in the industry. Solving the electrolyte sealing problem is the key to improving the reliability of the battery stack structure and the aluminum air battery system. In addition, high-power aluminum air battery also has the problems of complex single battery assembly and difficult maintenance operation. SUMMARY

[0004] The utility model aims at providing a single aluminum air battery stack to solve the problems of electrolyte leakage, complex assembly and difficult maintenance operation of the high-power aluminum air battery in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a single aluminum air battery stack is composed of multiple single aluminum air battery shells with the same structure and size and an elastomer sealing ring.

[0006] The single aluminum air battery shell includes an upper liquid inlet, an upper liquid outlet, a lower liquid inlet, a lower liquid outlet, a screw mounting hole and a reaction zone. An annular table for placing the elastomer sealing ring is formed on the outer side of the upper liquid outlet and the lower liquid outlet. An annular table for cooperating with the elastomer sealing ring is formed on the inner side of the upper liquid inlet and the lower liquid inlet. In the single aluminum air battery shell, the area communicating with the lower liquid inlet and the lower liquid outlet is the lower liquid inlet area, and the area communicating with the upper liquid inlet and the upper liquid outlet is the upper liquid outlet area. The lower liquid inlet area and the upper liquid outlet area are communicated with the reaction zone through the connecting channel. The screw mounting hole is formed on both sides of the single aluminum air battery shell.

[0007] The multiple single aluminum air battery shells are placed horizontally. The upper liquid outlet and the lower liquid outlet of the lower single aluminum air battery shell are correspondingly inserted into the upper liquid inlet and the lower liquid inlet of the upper single aluminum air battery shell. The screw sequentially passes through the screw mounting hole to fasten the multiple single aluminum air battery shells.

[0008] Further, the connection mode of the annular platform outside the upper liquid outlet and the lower liquid outlet and the elastic sealing ring is detachable connection or integral fixed connection.

[0009] Further, the annular platform opened outside the upper liquid outlet and the lower liquid outlet and the annular platform opened inside the upper liquid inlet and the lower liquid inlet are grooves or bosses or planes.

[0010] Further, the channels where the upper liquid inlet and the upper liquid outlet are located and the channels where the lower liquid inlet and the lower liquid outlet are located are all cavity structures, and the inner walls are smooth.

[0011] Further, the upper liquid outlet and the lower liquid outlet are circular or elliptical, and the shapes of the upper liquid inlet and the lower liquid inlet are matched with the shapes of the liquid outlets connected therewith.

[0012] Further, the elastic sealing ring is soft rubber or rubber-like material with elasticity.

[0013] When a plurality of single aluminum air batteries are assembled into a single aluminum air battery stack, the lower liquid outlet of the front single aluminum air battery provided with the elastic sealing ring is connected with the lower liquid inlet of the rear single aluminum air battery, the upper liquid outlet of the front single aluminum air battery provided with the elastic sealing ring is connected with the upper liquid inlet of the rear single aluminum air battery, and the elastic sealing ring is arranged between the liquid inlet elastic sealing ring mounting surface and the liquid outlet inner contour surface; the above connection mode is repeated to realize the liquid path connection of the plurality of single aluminum air batteries, and then each single aluminum air battery is fixed by the screw rod tensioning mode. At this time, the elastic sealing rings on the lower liquid outlet and the upper liquid outlet of the rear single battery are in interference fit with the grooves arranged on the lower liquid inlet and the upper liquid inlet of the front single battery, so as to realize the mutual sealing between the batteries.

[0014] The sealing structure is stable, the production efficiency is high, the assembly is convenient, the battery stack is flexible, the problem of electrolyte leakage is effectively solved, and the assembly and maintenance operation are simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of the utility model;

[0016] Figure 2 is a three-dimensional schematic view of a single aluminum air battery shell;

[0017] Figure 3 is a side view of a single aluminum air battery shell;

[0018] Figure 4 is a three-dimensional schematic view of a single aluminum air battery shell in embodiment 1;

[0019] Figure 5A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0020] Figure 6 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 5 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0021] Figure 7 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0022] A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 8 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0023] A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 9 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 8 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0024] A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 10 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0025] A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 11 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0026] A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 12 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 11 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0027] A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 13 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0028] A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 14 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); A side view of the single aluminum-air battery case in Example 1 (schematic internal structure);

[0029] A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); Figure 15 A side view of the single aluminum-air battery case in Example 1 (schematic internal structure); DETAILED DESCRIPTION

[0030] The embodiments of the present application will now be described with reference to the drawings. Those skilled in the art will appreciate that the following description is by way of example only and should not be used to limit the scope of the present application. Unless otherwise defined, technical, connecting relationship or condition not specified in the embodiments are in accordance with the description of the literature in the art or in accordance with the product instructions. The materials, instruments or equipment not specified by the manufacturer are all conventional products that can be obtained by purchase.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "provided with" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0032] like Figures 1-3 As shown, the present invention provides a single aluminum-air battery stack, which is composed of multiple single aluminum-air battery shells 100 with the same structure and size and an elastomer sealing ring 200.

[0033] The single aluminum-air battery casing 100 includes an upper liquid inlet 101, an upper liquid outlet 102, a lower liquid inlet 103, a lower liquid outlet 104, a screw mounting hole 105, and a reaction zone 107.

[0034] Both the upper liquid outlet 102 and the lower liquid outlet 104 have annular platforms on their outer sides for placing the elastomer sealing ring 200. Both the upper liquid inlet 101 and the lower liquid inlet 103 have annular platforms on their inner sides for engaging with the elastomer sealing ring 200. Inside the single aluminum air battery housing 100, the area connected to the lower liquid inlet 103 and the lower liquid outlet 104 is the lower liquid inlet area, and the area connected to the upper liquid inlet 101 and the upper liquid outlet 102 is the upper liquid outlet area. Both the lower liquid inlet area and the upper liquid outlet area are connected to the reaction zone 107 through the connecting channel 106. Screw mounting holes 105 are provided on both sides of the single aluminum air battery housing 100.

[0035] Multiple individual aluminum-air battery housings 100 are horizontally stacked. The upper liquid outlet 102 and lower liquid outlet 104 of the lower individual aluminum-air battery housing 100 are correspondingly inserted into the upper liquid inlet 101 and lower liquid inlet 103 of the upper individual aluminum-air battery housing 100. The screws pass through the screw mounting holes 105 in sequence to fasten the multiple individual aluminum-air battery housings 100. Under the fastening of the screws, the elastomeric sealing ring on the lower individual aluminum-air battery housing is squeezed by the annular platform of the upper individual aluminum-air battery housing to form a sealed space, thereby realizing the fastening of the battery stack and the sealed connection of the electrolyte pipeline.

[0036] Further optimize the design. The connection between the annular platform on the outer side of the upper liquid outlet 102 and the lower liquid outlet 104 and the elastomer sealing ring 200 can be either a detachable connection or an integral fixed connection. In terms of process, it can be molded separately and then disassembled and installed, or the elastomer sealing ring can be directly injection molded onto the battery case for fixed installation. The elastomer sealing ring is a circular or elliptical structure with a cross-section composed of a circle or multiple semi-circles, arcs, etc.

[0037] Further optimizing the design, the annular platforms formed on the outer sides of the upper liquid outlet 102 and lower liquid outlet 104, and the annular platforms formed on the inner sides of the upper liquid inlet 101 and lower liquid inlet 103, are grooves, bosses, or planes. The channels containing the upper liquid inlet 101 and upper liquid outlet 102, as well as the channels containing the lower liquid inlet 103 and lower liquid outlet 104, are all hollow structures with smooth inner walls. The upper liquid outlet 102 and lower liquid outlet 104 are both circular or elliptical, and the shapes of the upper liquid inlet 101 and lower liquid inlet 103 match the shapes of the liquid outlets they connect to.

[0038] Both the lower and upper liquid outlets on the single aluminum-air battery have boss structures, with at least two notches on each side of the boss, dividing the perimeter of the inlet and outlet into multiple equal parts. Elastomer sealing rings are tightly connected to the corresponding liquid outlets, fully filling the notches. The elastomeric sealing rings are connected to the liquid outlets via a two-stage injection molding process. During injection molding, the main shell is placed into the mold, the mold is closed, and the injection-molded polymer elastomer material is injected. The melt temperature is controlled at 170-190℃, with specific temperatures for the barrel: rear zone 170-180℃, middle zone 190±10℃, front zone 200±10℃, and nozzle 190±10℃. The mold temperature is controlled at 25-80℃, the injection pressure at 2-60MPa, and the holding pressure at 2-30MPa. After injection molding, the mold is opened for cooling, and the elastomeric sealing rings are tightly bonded to the liquid outlets.

[0039] The elastomeric sealing ring is made of elastic soft rubber or rubber-like material. It features a single or multi-stage lip seal structure. The outer contour dimensions of each lip seal can vary regularly or remain consistent. The bottom is a circular or elliptical plane, flush with the outer edge of the outlet pipe. The sealing lip is interference-fitted to the inlet slot. The interference amount of each sealing lip can remain consistent or vary regularly at a ratio of 1-8% of the elastomeric compression thickness.

[0040] The upper and lower liquid outlets on the individual aluminum-air battery correspond to the upper and lower liquid inlets, respectively, and are located on both sides of the individual aluminum-air battery. The corresponding interfaces are concentrically arranged, and the elastomer sealing rings and slots are correspondingly arranged. The liquid inlets, outlets, elastomer sealing rings, and slots are all tubular structures with continuous edges, such as circles, ellipses, and rounded rectangles, and their outer contours are concentrically arranged at the same location. Example 1

[0041] like Figures 4-5 As shown, the single aluminum-air battery consists of a single aluminum-air battery casing A300 and an elastomer O-ring seal A400. The elastomer O-ring seal A400 is installed on the lower liquid outlet A302 and the upper liquid outlet A303.

[0042] like Figure 6 As shown, the elastomeric O-ring A400 used in this embodiment has a circular cross-section and annular structure, and the material is a soft elastomer with elasticity.

[0043] like Figure 7As shown, the lower liquid outlet A302 and the upper liquid outlet A303 are both circular stepped structures; the elastic O-shaped sealing ring A400 is installed on the structure. The lower liquid inlet A307 and the upper liquid inlet A306 are both provided on the opposite side of the corresponding lower liquid outlet A302 and upper liquid outlet A303. The lower liquid inlet A307 and the upper liquid inlet A306 are both circular cavities, and the shape is the same as the corresponding liquid outlet, and the circular inner contour size is slightly larger than the first step outer contour size of the corresponding liquid outlet.

[0044] A hole is provided between the lower liquid outlet A302 and the lower liquid inlet A307, which is connected to the reaction cavity A305. A hole A304 is provided between the upper liquid outlet A303 and the upper liquid inlet A306, which is connected to the reaction cavity A305. A hole A308 is provided between the lower liquid outlet A302 and the upper liquid inlet A306, which is connected to the reaction cavity A305.

[0045] As shown in the figure, Figures 8-10 According to the single aluminum air battery electrolyte connection and sealing technology adopted in this embodiment, after the single battery is assembled into a group, the lower liquid outlet of the single battery is connected with the lower liquid inlet of the adjacent single battery, and the elastic O-shaped sealing ring is arranged in the connection point. The single batteries are fixed by the screw rod A301, and the assembled stack is tested. The sealing effect of the connection point part on the electrolyte is stable and reliable, and the assembly process is fast and convenient. Example 2

[0046] As shown in the figure, Figures 11-12 The single aluminum air battery is composed of a single aluminum air battery shell B500 and an elastic sealing ring B600. The elastic sealing ring B600 is directly bonded on the lower liquid outlet B501 and the upper liquid outlet B502 of the single aluminum air battery shell B500 by the injection molding process, and is fixed as a whole.

[0047] As shown in the figure, Figure 13 The elastic sealing ring B600 adopted in this embodiment is a ring structure with a rectangular cross section combined with a semicircular shape, and the material is a soft elastic body with elasticity.

[0048] As shown in the figure, Figure 12 The lower liquid outlet B501 and the upper liquid outlet B502 are both elliptical stepped structures; and two square notches are provided on the elliptical outer contour.

[0049] The lower liquid inlet B504 and the upper liquid inlet B503 are both provided on the opposite side of the corresponding lower liquid outlet B501 and upper liquid outlet B502. The lower liquid inlet B504 and the upper liquid inlet B503 are both elliptical cavities, and the shape is the same as the corresponding liquid outlet, and the elliptical inner contour size is slightly larger than the first step outer contour size of the corresponding liquid outlet.

[0050] A hole connecting to the reaction chamber B505 is provided between the lower liquid outlet B501 and the lower liquid inlet B504, and a hole connecting to the reaction chamber B505 is provided between the upper liquid outlet B502 and the upper liquid inlet B503.

[0051] like Figure 15 As shown, according to the single-cell aluminum-air battery electrolyte connection and sealing technology used in this embodiment, after the single cells are assembled into a group, the lower liquid outlet of the single cell is connected to the lower liquid inlet of the adjacent single cell, and the elastic sealing ring is squeezed and sealed in the middle of the connection point; the single cells are tightened and fixed by screw B506. After the assembled stack is tested, the sealing effect of the connection point on the electrolyte is stable and reliable, and the assembly process is quick and convenient.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A single-cell aluminum-air battery stack, characterized in that, The single aluminum-air battery stack consists of multiple single aluminum-air battery shells (100) of the same structure and size and an elastomer sealing ring (200); The single aluminum-air battery casing (100) includes an upper liquid inlet (101), an upper liquid outlet (102), a lower liquid inlet (103), a lower liquid outlet (104), a screw mounting hole (105), and a reaction zone (107). An annular platform for placing the elastomeric sealing ring (200) is provided on the outer side of both the upper liquid outlet (102) and the lower liquid outlet (104). An annular platform for cooperating with the elastomeric sealing ring (200) is provided on the inner side of both the upper liquid inlet (101) and the lower liquid inlet (103). Inside the single aluminum air battery case (100), the area connected to the lower liquid inlet (103) and the lower liquid outlet (104) is the lower liquid inlet area, and the area connected to the upper liquid inlet (101) and the upper liquid outlet (102) is the upper liquid outlet area. Both the lower liquid inlet area and the upper liquid outlet area are connected to the reaction area (107) through the connecting channel (106). The screw mounting hole (105) is provided on both sides of the single aluminum air battery case (100). Multiple individual aluminum air battery housings (100) are placed horizontally stacked. The upper liquid outlet (102) and lower liquid outlet (104) of the lower individual aluminum air battery housing (100) are inserted into the upper liquid inlet (101) and lower liquid inlet (103) of the upper individual aluminum air battery housing (100) respectively. The screw passes through the screw mounting hole (105) in sequence to fasten the multiple individual aluminum air battery housings (100).

2. The single-cell aluminum-air battery stack according to claim 1, characterized in that, The connection between the annular platform on the outside of the upper outlet (102) and the lower outlet (104) and the elastomeric sealing ring (200) is either a detachable connection or an integral fixed connection.

3. A single-cell aluminum-air battery stack according to claim 1, characterized in that, The annular platform opened on the outside of the upper liquid outlet (102) and the lower liquid outlet (104), and the annular platform opened on the inside of the upper liquid inlet (101) and the lower liquid inlet (103) are grooves, bosses or planes.

4. A single-cell aluminum-air battery stack according to claim 1, characterized in that, The channels containing the upper liquid inlet (101) and the upper liquid outlet (102), as well as the channels containing the lower liquid inlet (103) and the lower liquid outlet (104), are all hollow structures with smooth inner walls.

5. A single-cell aluminum-air battery stack according to claim 1, characterized in that, The upper liquid outlet (102) and the lower liquid outlet (104) are both circular or elliptical, and the shapes of the upper liquid inlet (101) and the lower liquid inlet (103) match the shapes of the liquid outlets they are connected to.

6. A single-cell aluminum-air battery stack according to claim 1, characterized in that, The elastomeric sealing ring (200) is made of elastic soft rubber or rubber-like material.

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