Button cell easy to assemble

Abstract

The utility model relates to the field of button cells, in particular to an easy-to-assemble button cell, which comprises a soft package battery cell, a shell, a cover plate and an elastic sheet, the soft package battery cell is electrically connected with a first tab and a second tab, the first tab and the second tab are respectively positioned on the upper end surface and the lower end surface of the soft package battery cell, the shell comprises an opening and a containing cavity, the soft package battery cell is positioned in the containing cavity, and the elastic sheet is arranged in the containing cavity. The cover plate is matched with the shell in an embedded mode through the opening, the elastic piece abuts against the position between the first electrode lug and the cover plate, the first electrode lug is electrically connected with the cover plate through the elastic piece, and the second electrode lug is electrically connected with the shell. According to the battery, the cover plate and the shell which are matched in an embedded manner are adopted, and the elastic sheet is used as an electric connection medium, so that the assembly process of the battery can be effectively simplified, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of button batteries, and in particular to an easy-to-assemble button battery. Background Technology

[0002] Button batteries, also known as coin cells or button-type batteries, are small batteries. Due to their small size, light weight, and stable and reliable performance, button batteries are widely used in various small electronic devices.

[0003] An existing coin cell battery, patent application number 202320274720.1, which facilitates assembly and connection, includes a top cover assembly, a casing, a cell, and a plastic bracket. The plastic bracket is disposed between the top plate and the inner cell, filling the space between them. One end of a first electrode tab is clamped between the plastic bracket and the top plate, providing support for the first electrode tab. However, in this design, the plastic bracket needs to be precisely filled between the top plate and the inner cell during assembly. In practice, however, due to space limitations, component dimensional tolerances, and assembly processes, precise assembly of the plastic bracket becomes cumbersome and time-consuming. Utility Model Content

[0004] This invention provides an easy-to-assemble button battery to solve the technical problem of complicated assembly in the prior art.

[0005] To solve the above problems, the present invention provides an easy-to-assemble button battery with the following technical solution: it includes a soft-pack battery cell, the soft-pack battery cell is electrically connected to a first tab and a second tab, the first tab and the second tab are respectively located on the upper and lower end faces of the soft-pack battery cell, and it also includes a shell, a cover plate, and a spring contact. The shell includes an opening and a receiving cavity, the soft-pack battery cell is located in the receiving cavity, the cover plate is fitted with the shell through the opening, the spring contact abuts between the first tab and the cover plate, the first tab is electrically connected to the cover plate through the spring contact, and the second tab is electrically connected to the shell.

[0006] Furthermore, a limiting ring is provided at the opening of the shell so that the opening diameter is smaller than the diameter of the receiving cavity. A limiting block is provided on the end face of the limiting ring facing the receiving cavity. A connecting piece is provided on the outer wall of the cover plate to fit into the limiting block. The connecting piece is configured as a U-shaped structure.

[0007] Furthermore, the end face of the limiting block facing the receiving cavity is set as an arc-shaped surface, the U-shaped groove of the connector is set as an arc-shaped structure that matches the limiting block, and the end of the connector away from the cover plate is set as an arc-shaped structure.

[0008] Furthermore, an insulating sealing ring is provided at the opening of the housing, and the inner circumference of the insulating sealing ring is in transition fit with the outer circumference of the cover plate.

[0009] Furthermore, the inner wall of the insulating sealing ring is provided with a fixing groove, which has an L-shaped structure, and the connector fits into the fixing groove.

[0010] Furthermore, the spring includes a fixing part, a connecting part, and a movable part. The fixing part is fixedly connected to the cover plate, the connecting part is configured as an inclined structure, and the movable part is movably fitted with the first pole ear.

[0011] Furthermore, the spring is configured as a ring-shaped, stepped frustum structure.

[0012] The beneficial effects of the easy-to-assemble button battery provided by this utility model are:

[0013] 1. By adopting a mating cover and housing design, and using a spring clip as an intermediary for electrical connection, this battery can effectively simplify the assembly process, reduce production costs, and improve production efficiency.

[0014] 2. The elasticity of the spring can compensate for minute displacements caused by manufacturing tolerances, temperature changes, or mechanical stress, maintaining the reliability of electrical contact and thus ensuring a stable electrical connection between the first tab and the cover plate. At the same time, when the battery is subjected to vibration, impact, or other mechanical stress, the spring can absorb these stresses, effectively reducing wear between the tab and the cover plate and extending the battery's service life. Attached Figure Description

[0015] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0016] Figure 1 This is a structural schematic diagram of an easy-to-assemble button battery according to the present invention;

[0017] Figure 2 This is a schematic diagram of the spring contact of an easy-to-assemble button battery according to the present invention;

[0018] Figure 3 This is a schematic diagram of the insulating sealing ring for an easy-to-assemble button battery according to the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Soft-pack battery cell; 11. First tab; 12. Second tab;

[0021] 2. Housing; 21. Opening; 211. Limiting ring; 2111. Limiting block; 22. Receiving cavity; 221. Insulating sealing ring; 2211. Fixing groove;

[0022] 3. Cover plate; 31. Connecting parts;

[0023] 4. Spring clip; 41. Fixing part; 42. Connecting part; 43. Moving part. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] The number of any elements in the accompanying drawings is for illustrative purposes only and not as a limitation, and any naming is for distinction only and has no limiting meaning.

[0026] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0027] This utility model provides an easy-to-assemble button battery, such as... Figures 1 to 3 As shown, the device includes a pouch cell 1, which is electrically connected to a first tab 11 and a second tab 12. The first tab 11 and the second tab 12 are located on the upper and lower end faces of the pouch cell 1, respectively. The device also includes a housing 2, a cover plate 3, and a spring tab 4. The housing 2 includes an opening 21 and a receiving cavity 22. The pouch cell 1 is located in the receiving cavity 22. The cover plate 3 is fitted into the housing 2 through the opening 21. The spring tab 4 abuts between the first tab 11 and the cover plate 3. The first tab 11 is electrically connected to the cover plate 3 through the spring tab 4, and the second tab 12 is electrically connected to the housing 2.

[0028] By adopting the above technical solution, the battery, through the design of the interlocking cover plate 3 and the shell 2, and the spring piece 4 as the medium for electrical connection, can effectively simplify the battery assembly process, reduce production costs, and improve production efficiency. Furthermore, the elasticity of the spring piece 4 can compensate for minor displacements caused by manufacturing tolerances, temperature changes, or mechanical stress, maintaining the reliability of electrical contact, thereby ensuring a stable electrical connection between the first tab 11 and the cover plate 3. At the same time, when the battery is subjected to vibration, impact, or other mechanical stress, the spring piece 4 can absorb these stresses, effectively reducing wear between the tab and the cover plate 3 and extending the battery's service life.

[0029] In this embodiment, the pouch cell 1, as the core component of the battery, provides electrical energy. The first tab 11 and the second tab 12 are located on the upper and lower end faces of the pouch cell 1, respectively, for establishing electrical connections with external circuits. It should be noted that the outer wall of the pouch cell 1 is non-conductive. The first tab 11 and the second tab 12 are connected to the positive and negative terminals of the pouch cell 1, respectively. The pouch cell 1 and the electrical connections of the first tab 11 and the second tab 12 to the pouch cell 1 are existing technologies. Those skilled in the art should understand their structure, principle, and usage methods, and these will not be described in detail here. In other embodiments, the first tab 11 and the spring contact 4 can be electrically connected by welding or pressing, and the second tab 12 can be directly fixed to the inner surface of the housing 2 by welding or pressing, thereby achieving electrical connection with the housing 2.

[0030] In this embodiment, a limiting ring 211 is provided at the opening 21 of the housing 2 so that the diameter of the opening 21 is smaller than the diameter of the receiving cavity 22. A limiting block 2111 is provided on the end face of the limiting ring 211 facing the receiving cavity 22. A connecting member 31 is provided on the outer wall of the cover plate 3 to fit and cooperate with the limiting block 2111. The connecting member 31 is configured as a U-shaped structure.

[0031] In this embodiment, the limiting ring 211 can be used to position the cover plate 3. When the cover plate 3 is assembled onto the housing 2, its edge will first contact the limiting block 2111 to ensure that the cover plate 3 is correctly aligned with the receiving cavity 22. The limiting block 2111 and the connector 31 fit together to further restrict the axial and radial movement of the cover plate 3 and make the connection between the cover plate 3 and the housing 2 more secure, thereby enhancing the overall structural stability of the battery and effectively preventing the cover plate 3 from accidentally falling off or loosening during battery use.

[0032] In this embodiment, the U-shaped connector 31 can be easily fitted onto the limiting block 2111, and then, through appropriate rotation or pushing, the connector 31 and the limiting block 2111 can be tightly fitted together. The opening 21 portion can allow for a certain assembly tolerance, so that the cover plate 3 can be more easily aligned with the limiting block 2111 during the assembly process.

[0033] In this embodiment, the end face of the limiting block 2111 facing the receiving cavity 22 is set as an arc-shaped surface, and the U-shaped groove of the connector 31 is set as an arc-shaped structure that matches the limiting block 2111. The end of the connector 31 away from the cover plate 3 is set as an arc-shaped structure, which can guide the connector 31 to be correctly assembled. When the cover plate 3 is pushed towards the housing 2, the U-shaped connector 31 will first contact the arc-shaped surface of the limiting block 2111. This design makes it easier for the connector 31 to slide along the arc-shaped surface and find the correct assembly position. In addition, the U-shaped groove of the arc-shaped structure can better adapt to the shape of the limiting block 2111, thereby providing a more stable connection.

[0034] In this embodiment, an insulating sealing ring 221 is provided at the opening 21 of the housing 2. The inner circumference of the insulating sealing ring 221 transitions with the outer circumference of the cover plate 3, ensuring a tight fit between the cover plate 3 and the housing 2. This prevents moisture, dust, or other contaminants from entering the battery and ensures that there is no electrical contact between the cover plate 3 and the housing 2, thereby avoiding the risk of short circuit. In this embodiment, the transition fit between the inner circumference of the insulating sealing ring 221 and the outer circumference of the cover plate 3 ensures a tight fit while allowing for certain assembly tolerances, making the battery assembly process more flexible and convenient.

[0035] like Figure 1 , Figure 3 As shown, in this embodiment, the inner wall of the insulating sealing ring 221 is provided with a fixing groove 2211. The fixing groove 2211 has an L-shaped structure. The connector 31 is fitted into the fixing groove 2211. The fixing groove 2211 provides a precise fitting position for the connector 31. When the connector 31 is fitted into the fixing groove 2211, they form a tight contact, which effectively prevents moisture, dust or other contaminants from entering the battery. In addition, it makes the connection between the cover plate 3 and the shell 2 more secure, thereby improving the battery's resistance to damage when subjected to external impact or vibration.

[0036] In this embodiment, the spring 4 includes a fixing part 41, a connecting part 42, and a movable part 43. The fixing part 41 is fixedly connected to the cover plate 3, and the connecting part 42 is configured with an inclined structure to provide a certain elastic support for the movable part 43. The movable part 43 is movably fitted with the first electrode tab 11. In other embodiments, the connection between the fixing part 41 and the cover plate 3 can be in various forms such as welding or bonding, as long as the electrical connection between the spring 4 and the cover plate 3 is satisfied.

[0037] like Figure 2As shown, in this embodiment, the spring 4 is configured as an annular plate-shaped stepped frustum structure, which is simple in structure and easy to manufacture. Furthermore, it allows the spring 4 to have different contact surfaces at different heights, thereby effectively increasing the contact area between the spring 4 and the cover plate 3 and the first electrode 11. This makes the spring 4 more structurally stable, able to resist greater external forces and vibrations, and helps to reduce contact resistance, improve the stability and reliability of electrical connections, and improve the conductivity of the spring 4.

[0038] The present invention provides an easy-to-assemble button battery. When the battery is assembled, firstly, the soft-pack cell 1 is placed in the receiving cavity 22 of the housing 2, and the second tab 12 of the soft-pack cell 1 abuts against the inner wall of the receiving cavity 22. Secondly, an insulating sealing ring 221 is installed on the inner wall of the receiving cavity 22. Then, the spring 4 is placed above the first tab 11, ensuring that the spring 4 can abut against the first tab 11 and the cover plate 3 to form good electrical contact. Finally, the cover plate 3 is aligned with the opening 21 of the housing 2, and the cover plate 3 is gently pushed to fit into the housing 2. During the fitting process, the connector 31 will first fit into the limiting block 2111, and then further fit into the fixing groove 2211 of the insulating sealing ring 221.

[0039] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0040] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. An easy-to-assemble button cell, comprising a soft-pack battery cell, the soft-pack battery cell being electrically connected with a first tab and a second tab, the first tab and the second tab being respectively located on an upper end face and a lower end face of the soft-pack battery cell, characterized in that, The shell includes an opening and a receiving cavity, the soft package battery cell is located in the receiving cavity, the cover plate is embedded and matched with the shell through the opening, the elastic sheet is abutted between the first tab and the cover plate, the first tab is electrically connected with the cover plate through the elastic sheet, and the second tab is electrically connected with the shell.

2. The easy-to-assemble coin cell battery of claim 1, wherein, The shell is provided with a limiting ring at the opening, so that the diameter of the opening is smaller than the diameter of the receiving cavity, a limiting block is arranged on the side end face of the limiting ring facing the receiving cavity, and the outer wall of the cover plate is provided with a connecting piece embedded and matched with the limiting block, the connecting piece is arranged in a U-shaped structure.

3. The easy-to-assemble coin cell battery of claim 2, wherein, The side end face of the limiting block facing the receiving cavity is arranged as an arc surface, the U-shaped groove of the connecting piece is arranged as an arc structure matched with the limiting block, and the end of the connecting piece away from the cover plate is arranged as an arc structure.

4. The easy-to-assemble coin cell battery of claim 3, wherein, The shell is provided with an insulating sealing ring at the opening thereof, and the inner periphery of the insulating sealing ring is transitionally matched with the outer periphery of the cover plate.

5. The easy-to-assemble coin cell battery of claim 4, wherein, The inner wall of the insulating sealing ring is provided with a fixing groove in an L-shaped structure, and the connecting piece is embedded and matched with the fixing groove.

6. The easy-to-assemble coin cell battery according to any one of claims 1 to 5, wherein, The elastic sheet includes a fixed part, a connecting part and a movable part, the fixed part is fixedly connected with the cover plate, the connecting part is arranged in an inclined structure, and the movable part is movably attached with the first tab.

7. The easy-to-assemble coin cell battery of claim 6, wherein, The elastic sheet is arranged in a ring-shaped sheet-shaped stepped circular table type structure.

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