Packaging structure of micro lithium-manganese button cell

Abstract

The utility model relates to battery packaging technical field discloses a kind of miniature lithium manganese button cell packaging structures, including bottom packaging disc, the upper end of the bottom packaging disc is provided with top packaging disc, the inside of the bottom packaging disc and top packaging disc is provided with battery protection structure, the rim of the bottom packaging disc and top packaging disc is provided with locking protection structure, the rim of the bottom packaging disc is fixedly connected with fixed base, the inside of the fixed base is fixedly connected with shaft rod.In the utility model, through the combination of protective pad in battery protection structure and bottom sponge pad and top annular sponge pad, multi-layer buffering and isolation of battery are realized, external impact and vibration are effectively absorbed, physical stress damage of battery cell is prevented, at the same time, transparent top protective cover allows user to directly observe battery status, maintenance convenience and safety are improved, and it is suitable for high reliability scene such as medical equipment or internet of things sensor.

Description

Technical Field

[0001] This utility model relates to the field of battery packaging technology, and in particular to a micro lithium manganese button battery packaging structure. Background Technology

[0002] Miniature lithium-manganese button batteries are coin-sized primary batteries that utilize a lithium-manganese dioxide chemistry system. Their core characteristics lie in the use of chemically stable manganese dioxide as the positive electrode and metallic lithium as the negative electrode, combined with an organic electrolyte. These batteries typically have a nominal voltage of 3V and, thanks to their high energy density, long storage life, wide operating temperature range, and stable discharge performance, have become ideal backup or main power sources for many low-power electronic devices. A lithium manganese button battery packaging structure is disclosed in publication number CN218957894U, including a lower battery casing. The lower battery casing has multiple evenly distributed limiting components on its inner wall bottom. Each limiting component includes a limiting frame fixedly connected to the bottom of the lower battery casing's inner wall. The inner wall of the limiting frame is lined with a layer of reinforcing cotton. A positive electrode metal sheet is disposed on the inner wall of the lower battery casing. Multiple slots adapted to the limiting frames are formed on the outer side of the positive electrode metal sheet. A battery cell adapted to the limiting frame is disposed on the top of the positive electrode metal sheet. This utility model has a reasonable structure. The multiple limiting frames limit the placement of the battery cell while leaving gaps around it to prevent excessive compression due to expansion during cell aging. Furthermore, the reinforcing cotton on the inner wall of the limiting frames provides cushioning for the battery cell.

[0003] The above applications focus on internal buffering, but lack an effective overall sealing mechanism, which can easily lead to battery moisture, oxidation or contaminant intrusion, affecting battery life and stability. Meanwhile, the opening and closing of the cover is relatively simple, lacks a reliable locking design, and may loosen under vibration or impact. In addition, it lacks visualization components, making it inconvenient for users to intuitively check the battery status, which limits its application in precision equipment. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a micro lithium manganese button battery packaging structure, which aims to improve the problems of lacking an effective overall sealing mechanism and lacking visual components.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including a bottom encapsulation disk, a top encapsulation disk is provided at the upper end of the bottom encapsulation disk, a battery protection structure is provided inside the bottom encapsulation disk and the top encapsulation disk, and a locking protection structure is provided on the edges of the bottom encapsulation disk and the top encapsulation disk. A fixing seat is fixedly connected to the edge of the bottom packaging plate, and a shaft is fixedly connected inside the fixing seat. A connecting seat is fixedly connected to the edge of the top packaging plate, and the connecting seat is rotatably connected to the surface of the shaft.

[0006] Preferably, the battery protection structure includes a protective pad fixedly disposed on the bottom surface of the top encapsulation disk, and a top protective cover is fixedly connected inside the top encapsulation disk, the top protective cover being made of transparent PVC material.

[0007] Preferably, a limiting ring is fixedly connected to the top surface of the bottom packaging plate, a bottom sponge pad is fixedly connected to the top surface of the bottom packaging plate, the bottom sponge pad is disposed inside the limiting ring, and a top annular sponge pad is fixedly connected to the inside of the top protective cover.

[0008] Preferably, the top surface of the bottom encapsulation disk is provided with a snap-fit ​​groove, which is located on the outer ring of the limiting ring. A sealing ring is fixedly connected to the bottom surface of the top encapsulation disk, and the sealing ring is inserted into the snap-fit ​​groove.

[0009] Preferably, the outer edge of the top encapsulation disk is fixedly connected to a buckle, and the inside of the buckle is fixedly connected to a locking pin.

[0010] Preferably, a positioning block is fixedly connected to the outer edge of the bottom encapsulation disk, and a slot is opened on the bottom surface of the positioning block, with the locking pin engaging inside the slot.

[0011] Preferably, the snap-fit ​​groove is V-shaped on the surface of the bottom encapsulation disk.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the combination of the protective pad, the bottom sponge pad and the top annular sponge pad in the battery protection structure achieves multi-layer buffering and isolation of the battery, effectively absorbing external impacts and vibrations, preventing the battery cell from being damaged by physical stress. At the same time, the transparent top protective cover allows users to directly observe the battery status, improving maintenance convenience and safety. It is suitable for high reliability scenarios such as medical equipment or IoT sensors.

[0013] 2. In this utility model, by setting a locking and protective structure with the coordinated design of buckles, pins and sealing rings, the tight fastening between the bottom and top packaging discs is ensured, forming a moisture-proof and dust-proof sealed environment, which enhances the long-term stability of the battery; the shaft connection mechanism makes the opening and closing operation simple and quick, improves the reusability and operating efficiency of the packaging structure, and reduces maintenance costs. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of a micro lithium manganese button battery packaging structure proposed in this utility model; Figure 2 This is a diagram showing the snap-fit ​​structure of the bottom and top packaging discs of a micro lithium manganese button battery packaging structure proposed in this utility model. Figure 3 This is a bottom packaging disk diagram of a micro lithium manganese button battery packaging structure proposed in this utility model; Figure 4 This is a top packaging disk diagram of a micro lithium manganese button battery packaging structure proposed in this utility model; Figure 5 This invention proposes a micro lithium manganese button battery packaging structure. Figure 3 A magnified structural diagram of point A in the middle.

[0015] Legend: 1. Bottom encapsulation plate; 2. Top encapsulation plate; 3. Battery protection structure; 4. Locking protection structure; 5. Fixing base; 6. Shaft; 7. Connecting base; 8. Protective pad; 9. Top protective cover; 10. Limiting ring; 11. Bottom sponge pad; 12. Top annular sponge pad; 13. Snap-fit ​​groove; 14. Sealing ring; 15. Buckle; 16. Snap pin; 17. Positioning block; 18. Snap groove. Detailed Implementation

[0016] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0017] Reference Figures 1-3 An embodiment of this utility model includes a bottom encapsulation disk 1, a top encapsulation disk 2 is provided at the upper end of the bottom encapsulation disk 1, a battery protection structure 3 is provided inside the bottom encapsulation disk 1 and the top encapsulation disk 2, and a locking protection structure 4 is provided on the edge of the bottom encapsulation disk 1 and the top encapsulation disk 2. A fixing seat 5 is fixedly connected to the edge of the bottom encapsulation plate 1, and a shaft 6 is fixedly connected inside the fixing seat 5. A connecting seat 7 is fixedly connected to the edge of the top encapsulation plate 2, and the connecting seat 7 is rotatably connected to the surface of the shaft 6. This shaft 6 connection design enables the top encapsulation disk 2 to open and close relative to the bottom encapsulation disk 1 in a hinge-like manner, making it easy for users to quickly open and close the encapsulation structure for battery replacement or maintenance.

[0018] Referring to the figure, the battery protection structure 3 includes a protective pad 8 fixedly disposed on the bottom surface of the top encapsulation disk 2, and a top protective cover 9 fixedly connected inside the top encapsulation disk 2. The top protective cover 9 is made of transparent PVC material. The protective pad 8 is typically made of elastic materials such as silicone or polyurethane, and comes into direct contact with the battery surface, serving as a buffer and insulator to prevent short circuits or mechanical damage. The transparent PVC top protective cover 9 not only allows users to visually observe the battery status, such as changes in cell color, leakage, or swelling, but also possesses lightweight and chemical-resistant properties, making it suitable for humid or corrosive environments.

[0019] Referring to the figure, a limiting ring 10 is fixedly connected to the top surface of the bottom encapsulation disk 1, a bottom sponge pad 11 is fixedly connected to the top surface of the bottom encapsulation disk 1, the bottom sponge pad 11 is disposed inside the limiting ring 10, and a top annular sponge pad 12 is fixedly connected to the inside of the top protective cover 9. The function of the limiting ring 10 is to precisely fix the battery position, prevent it from shifting inside the package, and ensure reliable electrode contact. The bottom sponge pad 11 and the top annular sponge pad 12 together form an elastic support system. The sponge material, such as open-cell polyurethane, can effectively absorb impact energy and vibration, preventing the battery from degrading due to physical stress during transportation or equipment operation.

[0020] Referring to the figure, a snap-fit ​​groove 13 is provided on the top surface of the bottom encapsulation disk 1. The snap-fit ​​groove 13 is provided on the outer ring of the limiting ring 10. A sealing ring 14 is fixedly connected to the bottom surface of the top encapsulation disk 2. The sealing ring 14 is inserted into the inside of the snap-fit ​​groove 13. The engagement of the snap-fit ​​groove 13 and the sealing ring 14 forms the main sealing interface. The sealing ring 14 is usually made of rubber or silicone, which is elastic and resistant to aging.

[0021] Referring to the figure, a buckle 15 is fixedly connected to the outer edge of the top encapsulation disk 2, and a locking pin 16 is fixedly connected to the inside of the buckle 15; The latch 15, as the actuating component of the locking mechanism, is usually made of rigid plastic or metal, and the locking pin 16 is embedded in it to improve mechanical strength.

[0022] Referring to the figure, a positioning block 17 is fixedly connected to the outer edge of the bottom encapsulation disk 1. A slot 18 is opened on the bottom surface of the positioning block 17, and a locking pin 16 is engaged in the inside of the slot 18. The positioning block 17 serves as a guide and alignment element, ensuring that the locking pin 16 accurately engages with the slot 18 when closed, achieving a secure lock.

[0023] Referring to the figure, the card slot 13 is V-shaped on the surface of the bottom encapsulation disk 1; The advantage of the V-shaped snap-fit ​​groove 13 lies in its wedge-shaped structure, which can guide the sealing ring 14 to be evenly compressed, forming a tighter seal.

[0024] Working principle: When using the device, the button cell battery is placed inside the limiting ring 10. After completion, the top encapsulation plate 2 is flipped to make the connecting seat 7 rotate downward on the surface of the shaft 6. As the top encapsulation plate 2 rotates downward, the top protective cover 9 and the limiting ring 10 form a sealed space. As it continues to descend, the sealing ring 14 engages with the inside of the engagement groove 13. Since the engagement groove 13 is V-shaped, the top protective cover 9 is isolated from the outside as the sealing ring 14 is continuously pressed down. At the same time, the buckle 15 contacts the positioning block 17. The buckle 15 deforms while pressing the positioning block 17 until the bottom of the buckle 15 is below the positioning block 17. Then the buckle 15 returns to its shape. At this time, the locking pin 16 is inserted into the inside of the positioning block 17, thereby completing the encapsulation of the button battery. The button battery is protected inside the top protective cover 9 and the limiting ring 10 by the bottom sponge pad 11 and the top annular sponge pad 12. The status of the button battery can also be observed through the top protective cover 9.

[0025] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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 packaging structure of a micro lithium-manganese button cell, comprising a bottom packaging disc (1), characterized in that: The bottom encapsulation disk (1) is provided with a top encapsulation disk (2) at its upper end. The bottom encapsulation disk (1) and the top encapsulation disk (2) are provided with a battery protection structure (3) inside. The bottom encapsulation disk (1) and the top encapsulation disk (2) are provided with a locking protection structure (4) along their edges. The bottom encapsulation disk (1) is fixedly connected to a fixed seat (5) on its edge, and a shaft (6) is fixedly connected inside the fixed seat (5). The top encapsulation disk (2) is fixedly connected to a connecting seat (7) on its edge, and the connecting seat (7) is rotatably connected to the surface of the shaft (6).

2. The packaging structure of a micro lithium-manganese button cell according to claim 1, wherein: The battery protection structure (3) includes a protective pad (8) fixedly installed on the bottom surface of the top encapsulation disk (2), and a top protective cover (9) is fixedly connected inside the top encapsulation disk (2). The top protective cover (9) is made of transparent PVC material.

3. The micro lithium manganese button cell battery packaging structure according to claim 2, characterized in that: The bottom encapsulation plate (1) is fixedly connected to the top surface of the bottom encapsulation plate (1), and a bottom sponge pad (11) is fixedly connected to the top surface of the bottom encapsulation plate (1). The bottom sponge pad (11) is located inside the limit ring (10), and a top annular sponge pad (12) is fixedly connected to the inside of the top protective cover (9).

4. The packaging structure of the micro lithium-manganese button cell according to claim 3, wherein: The bottom encapsulation disk (1) has a snap-fit ​​groove (13) on its top surface. The snap-fit ​​groove (13) is located on the outer ring of the limiting ring (10). The bottom surface of the top encapsulation disk (2) is fixedly connected to a sealing ring (14), which is inserted into the inside of the snap-fit ​​groove (13).

5. The packaging structure of a micro lithium-manganese button cell according to claim 4, wherein: The outer edge of the top encapsulation disk (2) is fixedly connected with a buckle (15), and the inside of the buckle (15) is fixedly connected with a locking pin (16).

6. The micro lithium manganese button battery packaging structure according to claim 5, characterized in that: The bottom encapsulation disk (1) is fixedly connected to a positioning block (17) on its outer edge. The bottom surface of the positioning block (17) is provided with a slot (18), and the locking pin (16) is engaged inside the slot (18).

7. The packaging structure of a micro lithium-manganese button cell battery according to claim 6, wherein: The snap-fit ​​groove (13) is V-shaped on the surface of the bottom encapsulation disk (1).

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