Layered cement-based battery packaging structure

Abstract

The utility model discloses a layered cement-based battery packaging structure which comprises an outer shell and a sealing cover, a layered cement-based battery is arranged in the outer shell, the sealing cover is arranged at the opening end of the outer shell in a sealing mode, and the outer shell and the sealing cover are both made of acrylonitrile butadiene styrene (ABS) plastics. According to the utility model, ABS (Acrylonitrile Butadiene Styrene) is used as a battery packaging structural member, so that the battery packaging structural member has better impact resistance and toughness, is good in processability, can be easily manufactured into a shell with a complicated shape through injection molding and the like, and meets various design requirements of batteries; and the ABS keeps good dimensional stability in the use process, and adapts to factors such as internal expansion or temperature change of the battery.

Description

Technical Field

[0001] This utility model relates to the field of battery packaging structure technology, and in particular to a layered cement-based battery packaging structure. Background Technology

[0002] Cement can be considered green because it is a rock-based material. However, in recent years, building energy consumption has accounted for more than 31% of global energy consumption, increasing the burden of energy shortages in countries around the world. Therefore, in the past few years, experts have proposed the concept of zero-energy buildings to transform renewable energy technologies in the building sector or develop building materials with energy storage capabilities. However, renewable energy sources such as solar, wind, and hydropower require large-scale energy storage technologies due to their intermittent and random nature. Electrochemical energy storage technology has made large-scale energy storage possible, but the currently widely used energy storage batteries are lithium-ion batteries, whose capacity is directly related to their volume and are expensive. Therefore, buildings themselves have a significant advantage as energy storage devices because their large volume allows for high energy storage without the need for additional large-volume energy storage devices. This type of building energy storage is also called structural energy storage, which can provide both load-bearing and energy storage capabilities without being constrained by geology and the environment. Secondly, combining it with solar, wind, and other energy devices can promote the integration of energy conversion, energy storage, and self-powering in buildings.

[0003] Cement, as a traditional inorganic non-metallic material, possesses electronic insulation properties, but it is also an ionic conductor due to the presence of a pore solution. This pore solution can exist within the microstructure of cement and flow through its pores and microcracks. This ionic property allows cement to be used as an electrolyte in batteries. There are already some reports on cement-based batteries. Unlike supercapacitors with cement electrolytes, cement-based batteries use cement as the matrix for the positive electrode, negative electrode, and electrolyte, with active materials added to the positive and negative electrodes respectively.

[0004] Currently, the main types of cement-based battery structures are probe-type and layered. Actual testing has shown that layered cement batteries cease functioning once dried. Therefore, after molding, demolding, curing, and maintenance, layered cement-based batteries require encapsulation to reduce moisture loss and ensure their electrochemical performance and cycle life. Existing technologies encapsulate layered cement-based batteries using Sikagard 680S waterproof coating, epoxy resin, or solid paraffin wax on the battery surface. However, these coatings have poor water retention and limited impact on electrochemical performance and cycle life, thus restricting further research and development of cement-based batteries. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a layered cement-based battery encapsulation structure. Using ABS as the battery encapsulation structure has good impact resistance and toughness, good processing performance, and can be easily manufactured into complex-shaped shells through injection molding and other methods to meet various battery design requirements. Furthermore, ABS maintains good dimensional stability during use and can adapt to factors such as internal battery expansion or temperature changes.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A layered cement-based battery encapsulation structure includes a housing and a cap, wherein the layered cement-based battery is disposed inside the housing, and the cap is sealed at the opening end of the housing. Both the housing and the cap are made of ABS plastic.

[0008] Furthermore, the cover is provided with a safety valve, which is in communication with the interior of the outer shell.

[0009] Furthermore, the layered cement-based battery includes a cement-based positive electrode, a cement-based electrolyte, and a cement-based negative electrode stacked sequentially. The top surface of the cement-based positive electrode is provided with a first tab, and the top surface of the cement-based negative electrode is provided with a second tab. The first tab and the second tab are electrically connected to terminals disposed on the cover, respectively.

[0010] Furthermore, the first tab is made of aluminum, and the second tab is made of copper foil.

[0011] Furthermore, the terminal is a bolt.

[0012] Furthermore, the outer shell is provided with an annular insertion part, and the cover is provided with an insertion groove adapted to the insertion part. The cover is connected to the outer shell through the insertion part and the insertion groove.

[0013] Furthermore, the outer casing has connecting protrusions at its four corners, and the connecting protrusions have threaded holes. The cover is fixed to the outer casing by screws and threaded holes.

[0014] Furthermore, the insertion groove is provided with an annular sealing strip, and the top surface of the insertion part abuts against the sealing strip.

[0015] The beneficial effects of this utility model are:

[0016] This invention uses ABS as the battery encapsulation structure, which has good impact resistance and toughness, good processing performance, and can be easily manufactured into complex shapes through injection molding and other methods to meet various battery design requirements; moreover, ABS maintains good dimensional stability during use and can adapt to factors such as internal battery expansion or temperature changes. Attached Figure Description

[0017] Figure 1 This is a perspective view of the layered cement-based battery encapsulation structure in an embodiment of this utility model;

[0018] Figure 2 A top view of a layered cement-based battery encapsulation structure;

[0019] Figure 3 for Figure 2 Sectional view along line AA;

[0020] In the diagram, 1 is the outer casing; 2 is the cap; 3 is the cement-based positive electrode; 4 is the cement-based electrolyte; 5 is the cement-based negative electrode; 6 is the first tab; 7 is the second tab; 8 is the terminal; 9 is the plug-in part; 10 is the plug-in groove; 11 is the connecting protrusion; 12 is the threaded hole; and 13 is the sealing strip. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] See Figures 1-3 This utility model provides a technical solution:

[0023] Example:

[0024] like Figures 1-3 As shown, a layered cement-based battery encapsulation structure includes a housing 1 and a cover 2. The layered cement-based battery is disposed within the housing 1. Each layered cement-based battery (cell) comprises a cement-based positive electrode 3, a cement-based electrolyte 4, and a cement-based negative electrode 5, which are stacked sequentially. The top surface of the cement-based positive electrode 3 has a first tab 6 made of aluminum, and the top surface of the cement-based negative electrode 5 has a second tab 7 made of copper foil. The first tab 6 and the second tab 7 are electrically connected to terminals 8 disposed on the cover 2, where the terminals 8 are bolts. (Current is drawn out through the tabs and terminals 8 in this configuration.)

[0025] The cover 2 is sealed at the opening end of the outer shell 1, and both the outer shell 1 and the cover 2 are made of ABS plastic.

[0026] The cover 2 is equipped with a safety valve, which is connected to the interior of the outer shell 1. The safety valve is used to release a small amount of gas generated during the cement curing process, i.e., to automatically depressurize.

[0027] The outer shell 1 is provided with an annular insertion part 9, and the cover 2 is provided with an insertion groove 10 adapted to the insertion part 9. The cover 2 is connected to the outer shell 1 through the insertion part 9 and the insertion groove 10.

[0028] The outer casing 1 has connecting protrusions 11 at its four corners, and threaded holes 12 are provided on the connecting protrusions 11. The cover 2 is fixed to the outer casing 1 by screws and threaded holes 12.

[0029] The insertion groove 10 is provided with an annular sealing strip 13, which is made of rubber, and the top surface of the insertion part 9 abuts against the sealing strip 13.

[0030] like Figure 3 As shown, terminal 8 uses bolts, and the installation position and length of terminal 8 ensure that terminal 8 is aligned with the positive and negative terminals. Individual cells can be connected in series by splicing the casing 1. After series connection, the positive and negative terminals are connected by connecting pieces, which are retractable to adjust their length according to the number of cells connected in series.

[0031] ABS, as a battery encapsulation structure, possesses good impact resistance and toughness, excellent processing performance, and can be easily manufactured into complex shapes through injection molding and other methods, adapting to various battery design requirements. ABS maintains good dimensional stability during use, accommodating factors such as internal battery expansion or temperature changes.

[0032] The cap and the outer shell are sealed by a connector, a slot and a sealing strip, which ensures the airtightness of the inner shell. The two are also fixed by screws, making it easy to install and remove.

[0033] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A layered cement-based battery encapsulation structure, characterized in that: The device includes a housing and a cap, with a layered cement-based battery disposed within the housing and the cap sealing the opening of the housing. Both the housing and the cap are made of ABS plastic.

2. The layered cement-based battery encapsulation structure according to claim 1, characterized in that: The cover is equipped with a safety valve, which is connected to the interior of the outer shell.

3. The layered cement-based battery encapsulation structure according to claim 1, characterized in that: The layered cement-based battery includes a cement-based positive electrode, a cement-based electrolyte, and a cement-based negative electrode stacked in sequence. The top surface of the cement-based positive electrode is provided with a first tab, and the top surface of the cement-based negative electrode is provided with a second tab. The first tab and the second tab are electrically connected to terminals provided on the cover, respectively.

4. The layered cement-based battery encapsulation structure according to claim 3, characterized in that: The first tab is made of aluminum, and the second tab is made of copper foil.

5. The layered cement-based battery encapsulation structure according to claim 3, characterized in that: The terminal is a bolt.

6. The layered cement-based battery encapsulation structure according to claim 1, characterized in that: The outer shell is provided with an annular insertion part, and the cover is provided with an insertion groove adapted to the insertion part. The cover is connected to the outer shell through the insertion part and the insertion groove.

7. The layered cement-based battery encapsulation structure according to claim 6, characterized in that: The outer casing has connecting protrusions at its four corners, and threaded holes are provided on the connecting protrusions. The cover is fixed to the outer casing by screws and threaded holes.

8. The layered cement-based battery encapsulation structure according to claim 7, characterized in that: The insertion slot is provided with an annular sealing strip, and the top surface of the insertion part abuts against the sealing strip.

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