Formation plastic nail assembly

Abstract

The utility model discloses a formation rubber nail assembly. The formation rubber nail assembly comprises a formation rubber nail and a formation rubber nail matching structure, the formation rubber nail comprises a nail column and a rubber plug, and the rubber plug is provided with a thread structure; the formation glue nail matching structure comprises a liquid injection hole in interference fit with the formation glue nail, and an annular clamping groove is formed in the inner wall of the liquid injection hole. The thread structure of the rubber plug is connected with the annular clamping groove in the inner wall of the liquid injection hole in a clamped mode. The utility model solves the problems that when the liquid injection hole is sealed by the formation glue nail at present, the nail warping phenomenon possibly occurs, the electrolyte leakage is caused, the risk of battery performance reduction is caused, and the environment and equipment around the battery are corroded and damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery preparation, and in particular relates to a chemically formed glue nail assembly. Background Art

[0002] During the manufacturing process of lithium batteries, formation nails (or formation nails) are primarily used to seal the injection hole on the battery's top cover, ensuring the battery's stability and safety during charging, discharging, and formation. Furthermore, the design and manufacture of the formation nails must take into account the precision of the fit between the battery's top cover and the housing. The mating surface must be sufficiently precise to ensure a good seal while also avoiding leakage problems caused by uneven stress distribution. During battery use, the formation nails may also be affected by environmental factors such as temperature fluctuations and chemical corrosion. Therefore, their long-term stability and durability must also be considered during design. In short, the design of formation nails is a complex process that comprehensively considers multiple factors, including sealing performance, electrical conductivity, durability, fit precision, and environmental adaptability. Through careful design and manufacture, formation nails can effectively improve the performance and safety of lithium batteries. Existing technology uses the compressibility of the formation nail material to elastically squeeze and fix it to the injection hole, thereby achieving the effect of sealing the injection hole and preventing electrolyte leakage during the formation process. When the injection hole cross section and the surface of the formed nail are squeezed against each other in different directions or the friction between the cross sections is in different directions, the nail may warp. Utility Model Content

[0003] The technical problem solved by the utility model is: to provide a chemical forming nail assembly, which solves the problem that when the chemical forming nail seals the liquid injection hole, the nail may lift up, causing electrolyte leakage, resulting in the risk of battery performance degradation, and causing corrosion and damage to the environment and equipment around the battery.

[0004] The technical solution of the utility model is: the utility model provides a chemical forming glue nail assembly, including a chemical forming glue nail and a chemical forming glue nail matching structure; the chemical forming glue nail includes a nail column and a glue plug, and the glue plug is provided with a threaded structure; the chemical forming glue nail matching structure includes an injection hole that is interference fit with the chemical forming glue nail, and an annular groove is provided on the inner wall of the injection hole; the threaded structure of the glue plug is engaged with the annular groove on the inner wall of the injection hole.

[0005] Furthermore, the chemically formed glue nail matching structure also includes a top cover, the injection hole is provided on the top cover and passes through the top cover, the upper surface of the top cover is also provided with a first groove, and the injection hole is provided on the center line of the bottom of the first groove.

[0006] Furthermore, the nail column and the rubber plug are fixedly connected, the nail column and the rubber plug are arranged on the same straight line, the side of the nail column close to the rubber plug is in contact with the bottom of the first groove, and the diameter of the first groove is larger than the diameter of the nail column.

[0007] Furthermore, the width of the thread on the rubber plug is the same as the width of the annular groove, and the cross-section of the annular groove is trapezoidal.

[0008] Furthermore, a chamfer is provided on a side where the first groove is connected to the liquid injection hole, and a chamfer is also provided on a side where the nail column is connected to the rubber plug.

[0009] Furthermore, a first boss is provided on the lower surface of the top cover, and the injection hole is provided on the central axis of the first boss. One end of the injection hole is connected to the bottom of the first groove, and the other end is connected to the first boss. The first boss, the injection hole and the first groove are arranged on the same straight line.

[0010] Furthermore, the chemically formed plastic nail matching structure also includes a lower plastic, which is arranged on a side close to the lower surface of the top cover. A second groove is provided on the lower plastic at a position corresponding to the first boss, and the first boss is correspondingly buckled with the second groove.

[0011] Furthermore, a through hole is provided on the center line of the second groove, the through hole and the injection hole are provided on the same straight line, and the diameter of the through hole is larger than the diameter of the injection hole.

[0012] Furthermore, the rubber plug passes through the through hole, and the rubber plug does not contact the inner wall of the through hole.

[0013] Furthermore, a second boss is provided on the side of the lower plastic away from the top cover, the through hole is provided on the central axis of the second boss, one end of the through hole is connected to the second groove, and the other end of the through hole is connected to the second boss, and the second boss, the through hole and the second groove are arranged on the same straight line.

[0014] The beneficial effect of the utility model is as follows: the utility model provides a threaded structure on the rubber plug of the chemical forming nail and an annular groove on the inner wall of the liquid injection hole, and the threaded structure of the rubber plug is engaged with the annular groove on the inner wall of the liquid injection hole, so that the interference fit between the chemical forming nail and the liquid injection hole is more firm, ensuring the sealing effect, avoiding the phenomenon of nail warping due to uneven stress distribution and causing electrolyte leakage, and increasing the safety of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic cross-sectional view of a chemically formed adhesive nail assembly provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the structure of a chemically formed adhesive nail provided in an embodiment of the present application;

[0018] Figure 3 A schematic cross-sectional view of the matching structure of a chemically formed adhesive nail provided in an embodiment of the present application.

[0019] Description of reference numerals:

[0020] 1- plastic nail, 2- top cover, 3- bottom plastic;

[0021] 11-nail column, 12-rubber plug, 21-liquid injection hole, 22-first groove, 23-first boss, 31-second groove, 32-second boss, 211-annular groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In this utility model, the terms "first," "second," etc. are primarily used to distinguish different devices, elements, or components (which may or may not be the same in type and configuration) and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0024] The following is a detailed description of the implementation of the present invention with reference to the accompanying drawings:

[0025] Figure 1 A schematic cross-sectional view of a chemically formed adhesive nail assembly provided in an embodiment of the present application is shown in FIG. Figure 1As shown, the forming nail assembly includes a forming nail 1 and a forming nail matching structure 2. The forming nail matching structure includes a top cover 2 and a lower plastic 3. The top cover 2 is made of metal and has a liquid injection hole 21. The forming nail 1 is made of elastic material and has an interference fit with the liquid injection hole 21. The forming nail 1 is used to seal the liquid injection hole to ensure the safety and stability of the product during formation.

[0026] Figure 2 The schematic diagram of a chemical forming nail structure provided in an embodiment of the present application shows that the chemical forming nail 1 includes a nail post 11 and a rubber plug 12. The rubber plug 12 has a threaded structure, and the nail post 11 and the rubber plug 12 are arranged on the same straight line. The threaded structure increases the friction between the chemical forming nail 1 and the injection hole 21.

[0027] Figure 3 This is a cross-sectional schematic diagram of a chemically formed glue nail matching structure provided in an embodiment of the present application. The chemically formed glue nail matching structure includes a top cover 2 and a lower plastic 3. The top cover 2 is provided with a liquid injection hole 21, a first groove 22 and a first boss 23. The first groove 22 is fitted with an end of the nail column 11 close to the plug 12. The diameter of the first groove 22 is larger than the diameter of the nail column 11. A chamfer is provided on the side where the nail column 11 is connected to the plug 12. A chamfer is also provided on the side where the first groove 22 is connected to the liquid injection hole 21, so that the chemically formed glue nail 1 is subjected to uniform force and is less likely to warp.

[0028] The injection hole 21, the first groove 22 and the first boss 23 are arranged on the same straight line. One end of the injection hole 21 is connected to the bottom of the first groove 22, and the other end is connected to the first boss 23. The first groove 22 is arranged on the upper surface of the top cover 2, and the first boss 23 is arranged on the lower surface of the top cover 2. An annular groove is provided in the injection hole 21, and the annular groove is engaged with the threaded structure on the plug 12. The cross-section of the annular groove is trapezoidal, and the width of the annular groove is the same as the width of a single thread of the threaded structure. The formation nail 1 is rotated and adjusted through the threaded structure until the lower surface of the nail column 11 is in contact with the first groove. This structure can improve the stability and sealing of the formation nail, reduce moisture ingress, reduce the risk of battery performance degradation due to electrolyte leakage, and avoid corrosion and damage to the environment and equipment around the battery.

[0029] The chemical glue nail matching structure also includes a lower plastic 3, which is arranged on a side close to the lower surface of the top cover 2. A second groove 32 is provided on the lower plastic 3 at a position corresponding to the first boss 23. The first boss 23 is engaged with the second groove 32. A second boss 33 is provided on the side of the lower plastic 3 away from the top cover 2. A through hole 31 is provided at the bottom of the second groove 32. The through hole 31, the second groove 32 and the second boss 33 are arranged on the same straight line. One end of the through hole 31 is connected to the bottom of the second groove 32, and the other end is connected to the second boss 33. The chemical glue nail 1 passes through the through hole 31 and does not contact the inner wall of the through hole 31. The diameter of the through hole 31 is larger than the diameter of the injection hole 21. The lower plastic 3 isolates the top cover 2 to prevent the electrolyte from corroding the metal top cover surface during the injection process. At the same time, it guides the top position of the chemical nail column to prevent the chemical nail column from tilting.

[0030] Obviously, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

[0031] Note that throughout this specification, references to terms such as "some embodiments" and "other embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. Throughout this specification, schematic representations of these 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 any one or more embodiments or examples.

Claims

1. A chemically formed plastic nail assembly, characterized in that: It includes a chemically formed glue nail and a chemically formed glue nail matching structure; the chemically formed glue nail includes a nail column and a glue plug, and the glue plug is provided with a threaded structure; the chemically formed glue nail matching structure includes an injection hole that is interference fit with the chemically formed glue nail, and an annular groove is provided on the inner wall of the injection hole; the threaded structure of the glue plug is engaged with the annular groove on the inner wall of the injection hole.

2. A chemically formed plastic nail assembly according to claim 1, characterized in that: The chemically formed glue nail matching structure also includes a top cover, the injection hole is provided on the top cover and passes through the top cover, a first groove is further provided on the upper surface of the top cover, and the injection hole is provided on the center line of the bottom of the first groove.

3. A chemically formed plastic nail assembly according to claim 2, characterized in that: The nail column is fixedly connected to the rubber plug, and the nail column and the rubber plug are arranged on the same straight line. The side of the nail column close to the rubber plug is in contact with the bottom of the first groove, and the diameter of the first groove is larger than the diameter of the nail column.

4. The chemically formed plastic nail assembly according to claim 2, characterized in that: The width of the thread on the rubber plug is the same as the width of the annular groove, and the cross section of the annular groove is trapezoidal.

5. The chemically formed plastic nail assembly according to claim 3, characterized in that: A chamfer is provided on a side where the first groove is connected to the liquid injection hole, and a chamfer is also provided on a side where the nail column is connected to the rubber plug.

6. The chemically formed plastic nail assembly according to claim 3, characterized in that: A first boss is provided on the lower surface of the top cover, and the injection hole is provided on the central axis of the first boss. One end of the injection hole is connected to the bottom of the first groove, and the other end is connected to the first boss. The first boss, the injection hole and the first groove are arranged on the same straight line.

7. The chemically formed plastic nail assembly according to claim 6, characterized in that: The chemically formed plastic nail matching structure also includes a lower plastic, which is arranged on a side close to the lower surface of the top cover. A second groove is provided on the lower plastic at a position corresponding to the first boss, and the first boss is correspondingly buckled with the second groove.

8. The chemically formed plastic nail assembly according to claim 7, characterized in that: A through hole is further provided on the center line of the second groove. The through hole and the liquid injection hole are provided on the same straight line. The diameter of the through hole is larger than the diameter of the liquid injection hole.

9. The chemically formed plastic nail assembly according to claim 8, characterized in that: The rubber plug passes through the through hole and does not contact the inner wall of the through hole.

10. The chemically formed plastic nail assembly according to claim 9, characterized in that: A second boss is provided on the side of the lower plastic away from the top cover, and the through hole is provided on the central axis of the second boss. One end of the through hole is connected to the second groove, and the other end of the through hole is connected to the second boss. The second boss, the through hole and the second groove are arranged on the same straight line.

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