Connection structure of needle-type steel-cased battery

Abstract

This utility model discloses a connection structure for a needle-type steel-cased battery, comprising: a cover plate, a terminal post, and an adapter plate; the cover plate is mounted on the casing; the terminal post is inserted into the cover plate, with at least one end of the terminal post protruding from the cover plate; the adapter plate is sleeved on the terminal post, the adapter plate being made of a conductive material, and the adapter plate being electrically connected to the terminal post; an insulating sheet is provided between the adapter plate and the cover plate, the insulating sheet being used to isolate the adapter plate and the cover plate. This utility model has the advantages of increasing the connectable area of ​​the adapter and reducing the welding difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of steel-cased battery technology, specifically relating to needle-type steel-cased batteries, and more particularly to a connection structure for needle-type steel-cased batteries. Background Technology

[0002] Steel-cased batteries generally have three types of connection structures: a. connecting tab connection; b. electronic wire connection (including related plug-ins); c. circuit board connection (including PCB or FPC). Figure 1 As shown, pin-type steel-cased batteries are also suitable for these three connection methods. Methods a and c generally require an adapter based on method b, making method b the most critical and fundamental connection structure. However, due to the limitations of pin-type steel-cased batteries—their small diameter and even smaller terminal diameter (typically <1mm)—the welding area between the connecting piece and the terminal is very small. Figure 2 As shown, laser welding typically involves three to four welding points 10, which tend to be concentrated in the narrow pole area, making welding difficult and resulting in a poor appearance. To ensure the connection strength and reduce the welding difficulty, a connection structure for a needle-type steel-cased battery is proposed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, this utility model proposes a connection structure for a needle-type steel-cased battery, which has the advantages of increasing the connectable area for the transfer and reducing the difficulty of welding.

[0005] The connection structure of the needle-type steel-cased battery according to an embodiment of the present invention includes: a cover plate, a terminal post, and an adapter plate; the cover plate is mounted on the casing; the terminal post is inserted into the cover plate, and at least one end of the terminal post protrudes from the cover plate; the adapter plate is sleeved on the terminal post, the adapter plate is made of a conductive material, and the adapter plate is electrically connected to the terminal post; an insulating sheet is provided between the adapter plate and the cover plate, the insulating sheet being used to isolate the adapter plate and the cover plate.

[0006] According to one embodiment of the present invention, a solder joint is formed between the adapter piece and the electrode post to electrically connect the adapter piece and the electrode post.

[0007] According to one embodiment of the present invention, an arc-shaped groove is formed in the area of ​​the adapter piece near the pole post, and a connecting layer is provided in the arc-shaped groove, the connecting layer being used to fix the adapter piece and the pole post.

[0008] According to one embodiment of the present invention, the number of the arc-shaped grooves is at least two, and the two arc-shaped grooves are arranged at intervals.

[0009] According to one embodiment of the present invention, the number of solder joints is at least two, and the two solder joints are distributed at the intervals of each arc groove.

[0010] According to one embodiment of the present invention, the end of the pole near the adapter plate is flush with the surface of the adapter plate.

[0011] According to one embodiment of the present invention, the cover plate includes an annular plate and an encapsulation layer. The pole post is located inside the hole of the annular plate, and the encapsulation layer is located between the annular plate and the pole post. The encapsulation layer is used to fix the pole post and the annular plate and to insulate the pole post and the annular plate.

[0012] According to one embodiment of the present invention, the encapsulation layer is one of glass, plastic, or ceramic.

[0013] According to one embodiment of the present invention, the thickness of the adapter piece is not less than 0.1 mm.

[0014] According to one embodiment of the present invention, an extension is formed on one side of the adapter piece, and the extension protrudes from the cover plate.

[0015] The beneficial effects of this utility model are that by attaching an adapter piece to the pole outside the cover plate and electrically connecting the adapter piece to the pole, the conductive area is increased, the connectable area for subsequent connections is increased, the welding difficulty is reduced, and the aesthetics of the welded product are improved.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments with accompanying drawings, in which: Figure 1 This is a schematic diagram of the connection structure of an existing steel-cased battery; Figure 2 This is a schematic diagram showing the location of solder joints when connecting existing steel-cased batteries; Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic diagram of the position of the arc-shaped groove in this utility model; Figure 5 This is a schematic diagram of the insulating sheet structure of this utility model; Figure 6This is a schematic diagram of the connection structure between the cover plate and the pole post of this utility model; Figure 7 This is a schematic diagram of the adapter plate of this utility model having an extension portion; Figure label: 1. Housing; 2. Cover plate; 21. Pole post; 22. Insulating sheet; 23. Adapter piece; 231. Arc groove; 232. Extension; 24. Encapsulation layer; 25. Connecting layer; 10. Solder joint. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The connection structure of the needle-type steel-cased battery according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] like Figures 1-7As shown, the connection structure of the needle-type steel-cased battery according to an embodiment of the present invention includes: a cover plate 2, a terminal post 21, and an adapter piece 23; the cover plate 2 is mounted on the casing 1; the terminal post 21 is inserted into the cover plate 2, and at least one end of the terminal post 21 protrudes from the cover plate 2; the adapter piece 23 is sleeved on the terminal post 21, the adapter piece 23 is made of conductive material, and the adapter piece 23 is electrically connected to the terminal post 21; an insulating sheet 22 is provided between the adapter piece 23 and the cover plate 2, and the insulating sheet 22 is used to isolate the adapter piece 23 and the cover plate 2.

[0024] In this embodiment, one end of the pole post 21 is connected to one of the electrodes of the core inside the housing 1 so that the electrode is led out of the housing 1. The end of the pole post 21 near the outside of the cover plate 2 protrudes from the surface of the cover plate 2. The adapter piece 23 is located on the outer surface of the cover plate 2. The adapter piece 23 is electrically connected to the pole post 21, which increases the conductive area, increases the connectable area for subsequent conversion, reduces the welding difficulty, and improves the aesthetics after welding.

[0025] Furthermore, the adapter piece 23 can be made of conductive materials such as stainless steel or nickel. The insulating sheet 22 has a thickness of 0.1-0.3 mm, and has a hole along its thickness direction with a hole diameter larger than that of the pole piece 21. This allows some of the adhesive to flow between the insulating sheet 22 and the pole piece 21 when the adhesive is filled into the arc-shaped groove 231, increasing the connection strength. The pole piece 21 passes through the insulating sheet 22 through this hole. The insulating sheet 22 is made of insulating materials such as PET or PC.

[0026] A solder joint 10 is formed between the adapter piece 23 and the terminal 21 to electrically connect the adapter piece 23 and the terminal 21.

[0027] In this embodiment, the adapter piece 23 and the electrode post 21 can be connected by contact or welding. Contact connection is achieved through the contact between the inner surface of the hole in the adapter piece 23 where it fits onto the electrode post 21 and the outer surface of the electrode post 21. Welding connection is achieved by welding the upper surfaces of the adapter piece 23 and the electrode post 21. Preferably, welding is used to connect the adapter piece 23 and the electrode post 21 to avoid instability caused by insufficient connection area when the adapter piece 23 is thin, thus improving the strength of the connection. It also reduces the precision requirement for the opening size of the adapter piece 23, ensuring a stable connection while reducing manufacturing complexity.

[0028] An arc-shaped groove 231 is formed in the area of ​​the adapter piece 23 near the pole post 21. A connecting layer 25 is provided in the arc-shaped groove 231. The connecting layer 25 is used to fix the adapter piece 23 and the pole post 21.

[0029] In this embodiment, the connecting layer 25 is made of colloid, and the inner surface of the hole in the adapter piece 23 for fitting the pole post 21 is formed with an arc-shaped groove 231. By forming the connecting layer 25 in the arc-shaped groove 231, the connecting layer 25 firmly connects the adapter piece 23 and the pole post 21, reducing the risk of relative displacement between the adapter piece 23 and the pole post 21, making the solder joint 10 less likely to break, and ensuring the connection firmness at the solder joint 10.

[0030] The number of arc grooves 231 can be one or more. When there are multiple arc grooves 231, the multiple arc grooves 231 are spaced apart along the circumferential direction of the pole post 21 to provide welding positions for the welding point 10 and ensure the uniformity of the connection.

[0031] The number of solder joints 10 can be one or more. When there are multiple solder joints 10, the multiple solder joints 10 are distributed at the intervals of each arc groove 231.

[0032] The end of the pole 21 near the adapter plate 23 is flush with the surface of the adapter plate 23.

[0033] In other words, the upper surface of the pole post 21 is flush with the surface of the adapter piece 23 to facilitate the welding of the pole post 21 and the adapter piece 23 and the subsequent welding of the adapter piece 23 to the connecting device.

[0034] The cover plate 2 includes a ring and an encapsulation layer 24. The electrode post 21 is located inside the hole of the ring, and the encapsulation layer 24 is located between the ring and the electrode post 21. The encapsulation layer 24 is used to fix the electrode post 21 and the ring and to insulate the electrode post 21 and the ring. The encapsulation layer 24 is one of glass, plastic, or ceramic.

[0035] In this embodiment, the thickness of the encapsulation layer 24 is the same as the thickness of the ring sheet. By placing the encapsulation layer 24 inside the hole of the ring sheet, the phenomenon of the encapsulation layer 24 increasing the thickness of the cover plate 2 is avoided, thus achieving space optimization.

[0036] The thickness of the adapter piece 23 is not less than 0.1 mm.

[0037] The cross-sectional dimension of the adapter piece 23 is not larger than the cross-sectional dimension of the housing 1. An extension 232 can be formed on one side of the adapter piece 23, protruding from the cover plate 2, that is, protruding from the side surface of the housing 1. The structure of the extension 232 can be selected according to the needs of the connection scenario, such as a straight piece or a bent piece to meet different connection scenarios. Figure 7 It is a straight-sheet type.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A connection structure for a needle-type steel-cased battery, characterized in that, include: Cover plate (2), said cover plate (2) is mounted on housing (1); A pole (21) is inserted into a cover plate (2), and at least one end of the pole (21) protrudes from the cover plate (2). The adapter (23) is sleeved on the pole (21). The adapter (23) is made of conductive material and is electrically connected to the pole (21). An insulating sheet (22) is provided between the adapter (23) and the cover plate (2). The insulating sheet (22) is used to isolate the adapter (23) and the cover plate (2).

2. The connection structure of the needle-type steel-cased battery according to claim 1, characterized in that, A solder joint (10) is formed between the adapter piece (23) and the pole piece (21) to electrically connect the adapter piece (23) and the pole piece (21).

3. The connection structure of the needle-type steel-cased battery according to claim 2, characterized in that, The adapter plate (23) has an arc-shaped groove (231) in the area near the pole post (21). A connecting layer (25) is provided in the arc-shaped groove (231). The connecting layer (25) is used to fix the adapter plate (23) and the pole post (21).

4. The connection structure of the needle-type steel-cased battery according to claim 3, characterized in that, The number of the arc-shaped grooves (231) is at least two, and the two arc-shaped grooves (231) are arranged at intervals.

5. The connecting structure of a needle-type steel can battery according to claim 4, wherein The number of the solder joints (10) is at least two, and the two solder joints (10) are distributed at the intervals of each arc groove (231).

6. The connection structure of the needle-type steel-cased battery according to claim 5, characterized in that, The end of the pole (21) near the adapter plate (23) is flush with the surface of the adapter plate (23).

7. The connection structure of the needle-type steel-cased battery according to claim 1, characterized in that, The cover plate (2) includes a ring and an encapsulation layer (24). The pole post (21) is located in the hole of the ring and the encapsulation layer (24) is located between the ring and the pole post (21). The encapsulation layer (24) is used to fix the pole post (21) and the ring and to insulate the pole post (21) and the ring.

8. The connection structure of the needle-type steel-cased battery according to claim 7, characterized in that, The encapsulation layer (24) is one of glass, plastic, or ceramic.

9. The connection structure of the needle-type steel-cased battery according to claim 1, characterized in that, The thickness of the adapter piece (23) is not less than 0.1 mm.

10. The connection structure of the needle-type steel-cased battery according to claim 1, characterized in that, An extension (232) is formed on one side of the adapter plate (2), and the extension (232) protrudes from the cover plate (2).

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