Solid sodium battery structure with good sealing effect

Abstract

The utility model belongs to the technical field of solid-state sodium batteries, and particularly relates to a solid-state sodium battery structure with a good sealing effect, which comprises a battery shell, a cover plate is fixedly connected to the upper surface of the battery shell, and a cathode protection ring and an anode protection ring are fixedly connected to the upper surface of the cover plate. Through the arrangement of a clamping column, a rotating disc, a spring and the like, the rotating disc drives the clamping column to move through a rotating column, so that the clamping column moves into a rotating groove and extrudes the spring, then the rotating disc is rotated, and the rotating disc drives the clamping column to rotate in the rotating groove through the rotating column; then a rotating disc is loosened, under the elasticity of a spring, a rotating column drives a clamping column to be clamped into a clamping groove, the drying box is fixed, a drying agent in the drying box dries water vapor in the battery shell, the water vapor in the air in the battery shell is prevented from affecting use of the sodium battery, and the probability of damage to the sodium battery is reduced advantageously.

Description

Technical Field

[0001] This utility model relates to the field of solid sodium battery technology, and in particular to a solid sodium battery structure with good sealing effect. Background Technology

[0002] Solid-state sodium batteries are a new type of battery technology that uses a solid electrolyte and a metal anode. Compared to traditional liquid or gel electrolyte batteries, they offer higher safety and energy density.

[0003] However, in existing devices, most solid sodium batteries seal the battery casing by stamping. But during stamping, some air still enters the battery casing. The air contains moisture, which affects the use of the sodium battery and increases the probability of damage. Therefore, a solid sodium battery structure with good sealing effect is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a solid-state sodium battery structure with good sealing performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a solid sodium battery structure with good sealing effect, including a battery casing, a cover plate fixedly connected to the upper surface of the battery casing, a negative electrode protection ring and a positive electrode protection ring fixedly connected to the upper surface of the cover plate, a negative electrode post fixedly connected inside the negative electrode protection ring, a positive electrode post fixedly connected inside the positive electrode protection ring, a sealing ring fixedly connected to the side of the cover plate connected to the battery casing, and a drying component provided at the bottom of the cover plate.

[0006] As a further description of the above technical solution:

[0007] The bottom of the cover plate has a drying groove, and four connecting grooves are provided on one side of the inside of the drying groove. Each connecting groove has a rotating groove on one side of its inside. A set of snap-fit ​​grooves is provided on one side of each connecting groove, and each set of snap-fit ​​grooves consists of two grooves.

[0008] As a further description of the above technical solution:

[0009] The battery casing is internally connected to multiple positive electrode plates and multiple negative electrode plates, which are alternately stacked. Each positive electrode plate has a separator on the side opposite to the negative electrode plate.

[0010] As a further description of the above technical solution:

[0011] Each of the positive electrode plates has a positive electrode tab fixedly connected to its upper surface, and a first connecting post is fixedly connected to multiple positive electrode tabs. The upper surface of the first connecting post is fixedly connected to the bottom of the positive electrode post.

[0012] As a further description of the above technical solution:

[0013] Each of the negative electrode plates has a negative electrode tab fixedly connected to its upper surface, and a second connecting post is fixedly connected to multiple negative electrode tabs. The upper surface of the second connecting post is fixedly connected to the bottom of the negative electrode post.

[0014] As a further description of the above technical solution:

[0015] The drying assembly includes a drying box movably connected inside the drying chamber. The drying box contains a desiccant. Four rotating columns are movably connected through one side of the drying box. Each rotating column is adapted to a corresponding connecting slot. A snap-fit ​​column is fixedly connected to one side of each rotating column. Each snap-fit ​​column is adapted to a corresponding set of snap-fit ​​slots. A rotating disk is fixedly connected to one end of each rotating column.

[0016] As a further description of the above technical solution:

[0017] Each of the rotating columns is movably equipped with a spring, one end of each spring is fixedly connected to one side of the corresponding rotating disk, and the other end is fixedly connected to one side of the drying box.

[0018] This utility model has the following beneficial effects:

[0019] 1. Compared with existing technologies, this solid-state sodium battery structure with good sealing effect, by setting up a drying box, rotating columns, snap-fit ​​columns, rotating disk, and springs, etc., the drying box is placed in the drying groove, and the four rotating columns snap into the corresponding connection grooves. Then, the rotating disk is pushed, and the rotating disk drives the snap-fit ​​columns to move, so that the snap-fit ​​columns move into the rotating grooves and squeeze the springs. Then the rotating disk is rotated, and the rotating disk drives the snap-fit ​​columns to rotate within the rotating grooves. Then the rotating disk is released, and under the elasticity of the springs, the rotating columns drive the snap-fit ​​columns to snap into the snap-fit ​​grooves, thus fixing the drying box. The desiccant in the drying box dries the moisture inside the battery casing, preventing moisture in the air inside the battery casing from affecting the use of the sodium battery, which helps to reduce the probability of sodium battery damage.

[0020] 2. Compared with the existing technology, this solid sodium battery structure with good sealing effect, by setting sealing rings, etc., after the drying box is fixed, the cover plate is stamped into the battery housing by a stamping machine. The sealing of the sealing ring helps to improve the sealing performance of the connection between the battery housing and the cover plate, and reduces the probability of moisture in the air entering the battery housing. Attached Figure Description

[0021] Figure 1This is a three-dimensional structural diagram of a solid sodium battery structure with good sealing effect proposed in this utility model.

[0022] Figure 2 This is an exploded view of the battery casing and cover plate of a solid sodium battery structure with good sealing effect proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of a cover plate for a solid sodium battery structure with good sealing effect proposed in this utility model;

[0024] Figure 4 This is a cross-sectional view of the cover plate of a solid sodium battery structure with good sealing effect proposed in this utility model;

[0025] Figure 5 This invention proposes a solid-state sodium battery structure with good sealing performance. Figure 4 Enlarged view of section A in the middle;

[0026] Figure 6 This is a schematic diagram of a drying component for a solid sodium battery structure with good sealing effect proposed in this utility model;

[0027] Figure 7 An exploded view of the drying component of a solid sodium battery structure with good sealing effect proposed in this utility model.

[0028] Legend:

[0029] 1. Battery casing; 2. Cover plate; 201. Drying chamber; 202. Connecting groove; 203. Rotating groove; 204. Snap-fit ​​groove; 3. Negative electrode protection ring; 4. Positive electrode protection ring; 5. Negative electrode plate; 6. Negative electrode tab; 7. Positive electrode plate; 8. Positive electrode tab; 9. Separator; 10. Second connecting post; 11. Negative electrode post; 12. First connecting post; 13. Positive electrode post; 14. Sealing ring; 15. Drying assembly; 151. Drying box; 152. Rotating post; 153. Snap-fit ​​post; 154. Rotating disk; 155. Spring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1 to 7This utility model provides a solid sodium battery structure with good sealing effect: It includes a battery casing 1, a cover plate 2 fixedly connected to the upper surface of the battery casing 1, a drying assembly 15 at the bottom of the cover plate 2, a drying groove 201 at the bottom of the cover plate 2, four connecting grooves 202 on one side of the inner side of the drying groove 201, a rotating groove 203 on one side of the inner side of each connecting groove 202, and a set of two snap-fit ​​grooves 204 on one side of each connecting groove 202. A negative electrode protection ring 3 and a positive electrode protection ring 4 are fixedly connected to the upper surface of the cover plate 2. A negative electrode post 11 is fixedly connected inside the negative electrode protection ring 3, and a positive electrode post 13 is fixedly connected inside the positive electrode protection ring 4. The internal structure of the sodium battery has multiple positive electrode plates 7 and multiple negative electrode plates 5 connected in a movable manner. Each negative electrode plate 5 has a negative electrode tab 6 fixedly connected to its upper surface. A second connecting post 10 is fixedly connected to the multiple negative electrode tabs 6. The upper surface of the second connecting post 10 is fixedly connected to the bottom of the negative electrode post 11. Each positive electrode plate 7 has a positive electrode tab 8 fixedly connected to its upper surface. A first connecting post 12 is fixedly connected to the multiple positive electrode tabs 8. The upper surface of the first connecting post 12 is fixedly connected to the bottom of the positive electrode post 13. The multiple positive electrode plates 7 and multiple negative electrode plates 5 are stacked alternately. A separator 9 is movably provided on the side of each positive electrode plate 7 opposite to the negative electrode plate 5. The separator 9 can prevent the positive electrode plate 7 and the negative electrode plate 5 from contacting each other, which would cause a short circuit inside the sodium battery.

[0032] To achieve the purpose of sealing, a sealing ring 14 is fixedly connected to the side of the cover plate 2 that is connected to the battery housing 1. After the drying box 151 is fixed, the cover plate 2 is pressed into the battery housing 1 by the stamping of the stamping machine. The sealing of the sealing ring 14 helps to improve the sealing performance of the connection between the battery housing 1 and the cover plate 2, and reduces the probability of moisture in the air entering the battery housing 1.

[0033] To achieve the drying purpose, the drying assembly 15 includes a drying box 151 movably connected inside the drying chamber 201. The drying box 151 contains a desiccant. Four rotating posts 152 are movably connected through one side of the drying box 151. Each rotating post 152 is adapted to a corresponding connecting groove 202. A snap-fit ​​post 153 is fixedly connected to one side of each rotating post 152, and each snap-fit ​​post 153 is adapted to a corresponding set of snap-fit ​​grooves 204. A rotating disk 154 is fixedly connected to one end of each rotating post 152. A spring 155 is movably mounted on each rotating post 152. One end of each spring 155 is fixedly connected to one side of the corresponding rotating disk 154, and the other end is fixedly connected to one side of the drying box 151. The drying box 151 is then placed into the drying chamber 201. Inside, the four rotating posts 152 are engaged in the corresponding connecting slots 202. Then, the rotating disk 154 is pushed, and the rotating disk 154 drives the engaging posts 153 to move through the rotating posts 152, so that the engaging posts 153 move into the rotating slots 203 and squeeze the spring 155. Then, the rotating disk 154 is rotated, and the rotating disk 154 drives the engaging posts 153 to rotate 90 degrees in the rotating slots 203 through the rotating posts 152. Then, the rotating disk 154 is released, and under the elasticity of the spring 155, the rotating posts 152 drive the engaging posts 153 to engage close to the engaging slots 204, thus fixing the drying box 151. The desiccant in the drying box 151 dries the moisture inside the battery casing 1, preventing the moisture in the air inside the battery casing 1 from affecting the use of the sodium battery and helping to reduce the probability of damage to the sodium battery.

[0034] Working principle: The drying box 151 is placed into the drying chamber 201, causing the four rotating posts 152 to engage with their corresponding connecting slots 202. Then, the rotating disk 154 is pushed, causing the rotating posts 152 to move the engaging posts 153 into the rotating chamber 203, compressing the spring 155. The rotating disk 154 is then rotated, causing the engaging posts 153 to rotate 90 degrees within the rotating chamber 203. Finally, the rotating disk 154 is released, and under the elasticity of the spring 155, the rotating posts 152 move back to their original positions. 2. The locking pin 153 is driven to approach the locking groove 204 to fix the drying box 151. The desiccant in the drying box 151 dries the moisture in the battery housing 1, preventing moisture in the air inside the battery housing 1 from affecting the use of the sodium battery and reducing the probability of damage to the sodium battery. After the drying box 151 is fixed, the cover plate 2 is pressed into the battery housing 1 by the stamping machine. The sealing ring 14 helps to improve the sealing performance of the connection between the battery housing 1 and the cover plate 2, reducing the probability of moisture in the air entering the battery housing 1.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solid-state sodium battery structure with good sealing performance, comprising a battery casing (1), characterized in that: A cover plate (2) is fixedly connected to the upper surface of the battery casing (1). A negative electrode protection ring (3) and a positive electrode protection ring (4) are fixedly connected to the upper surface of the cover plate (2). A negative electrode post (11) is fixedly connected inside the negative electrode protection ring (3). A positive electrode post (13) is fixedly connected inside the positive electrode protection ring (4). A sealing ring (14) is fixedly connected to the side of the cover plate (2) connected to the battery casing (1). A drying component (15) is provided at the bottom of the cover plate (2).

2. The solid-state sodium battery structure with good sealing effect according to claim 1, characterized in that: The bottom of the cover plate (2) is provided with a drying groove (201). Four connecting grooves (202) are provided on one side of the interior of the drying groove (201). A rotating groove (203) is provided on one side of the interior of each connecting groove (202). A set of snap-fit ​​grooves (204) is provided on one side of each connecting groove (202). There are two snap-fit ​​grooves (204) in each set.

3. The solid-state sodium battery structure with good sealing effect according to claim 1, characterized in that: The battery casing (1) is internally connected to a plurality of positive electrode plates (7) and a plurality of negative electrode plates (5). The plurality of positive electrode plates (7) and the plurality of negative electrode plates (5) are stacked alternately. Each positive electrode plate (7) has a separator (9) movably provided on the side opposite to the negative electrode plate (5).

4. The solid-state sodium battery structure with good sealing effect according to claim 3, characterized in that: Each of the positive electrode plates (7) has a positive electrode tab (8) fixedly connected to its upper surface. A first connecting post (12) is fixedly connected to multiple positive electrode tabs (8). The upper surface of the first connecting post (12) is fixedly connected to the bottom of the positive electrode post (13).

5. The solid-state sodium battery structure with good sealing effect according to claim 3, characterized in that: Each of the negative electrode plates (5) has a negative electrode tab (6) fixedly connected to its upper surface. A second connecting post (10) is fixedly connected to multiple negative electrode tabs (6). The upper surface of the second connecting post (10) is fixedly connected to the bottom of the negative electrode post (11).

6. The solid-state sodium battery structure with good sealing effect according to claim 2, characterized in that: The drying assembly (15) includes a drying box (151) movably connected inside the drying tank (201). The drying box (151) contains a desiccant. Four rotating columns (152) are movably connected through one side of the drying box (151). Each rotating column (152) is adapted to a corresponding connecting groove (202). A snap-fit ​​column (153) is fixedly connected to one side of each rotating column (152). Each snap-fit ​​column (153) is adapted to a corresponding set of snap-fit ​​grooves (204). A rotating disk (154) is fixedly connected to one end of each rotating column (152).

7. A solid-state sodium battery structure with good sealing effect according to claim 6, characterized in that: Each of the rotating columns (152) is movably provided with a spring (155), one end of each spring (155) is fixedly connected to one side of the corresponding rotating disk (154), and the other end is fixedly connected to one side of the drying box (151).

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