Matching type formation nail

Abstract

The utility model relates to the technical field of energy storage battery manufacturing, in particular to a matching type formation nail. The formation nail comprises a sealing plug assembly and a fastening column, the sealing plug assembly is used for being inserted into the liquid injection through hole of the battery cover plate and used for sealing the liquid injection through hole, and the fastening column is inserted into the sealing plug assembly to guide the sealing plug assembly to seal the liquid injection through hole of the battery cover plate in an interference mode. According to the formation nail, sealing of an independent elastic rubber formation nail is avoided, the service life of the formation nail is prolonged, and the cost is reduced; the locking piece of the fastening column is matched with the stop piece on the base part of the sealing plug assembly in a limiting manner, so that the sealing plug assembly limits the fastening column, the sealing of the sealing plug assembly on the liquid injection through hole is enhanced again, and the fastening column is prevented from falling off through mutual limiting between the sealing plug assembly and the fastening column; and the sealing effect of the liquid injection through hole is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage battery manufacturing, in particular to a matching type forming nail. Background Art

[0002] The cleanliness and humidity of the environment have a great impact on the production process of energy storage batteries. In order to ensure the yield rate of battery products, the environment needs to be strictly controlled. However, the moisture and pollution brought by the staff themselves during the production process are still inevitable. Due to the limitation of low battery activation efficiency, there are often a large number of batteries that are only inserted with formation nails but not sealed in the workshop. A series of operations need to be performed before they can be sealed. When there is no sealing, the single formation nail cannot completely isolate the moisture and pollution from the outside world. The outer wall of the existing formation nail is generally set as an uneven special-shaped structure, and the tail diameter is usually larger than the injection aperture. The injection port is limited by the elasticity of the rubber material. After long-term use, the rubber loses its elasticity and affects the sealing. It may even be that the gas production inside the battery during the static or aging process will push the formation nail out, causing the battery to be directly in contact with the outside world and contaminated. At the same time, the existing combined formation nail is provided with a sealing component inserted into the sealing injection port, and the locking component is inserted into the sealing component to guide the sealing component to expand to form an interference seal on the injection port. However, after sealing the injection port for a long time, the gas production pressure inside the battery is too high, and the formation nail will gradually be pushed out and fall off. Utility Model Content

[0003] In order to overcome the above-mentioned technical problems, the utility model provides a matching type chemical nail, which has a clearance fit between a sealing plug assembly and a liquid injection through hole, and a fastening column is inserted into a positioning countersunk hole of the sealing plug assembly to guide the sealing plug assembly to seal the liquid injection through hole through interference, thereby avoiding the sealing of a single elastic rubber chemical nail, thereby improving the service life of the chemical nail and reducing the cost; and by setting a locking piece of the fastening column and a stop piece on the base of the sealing plug assembly to limit the fastening column, the sealing plug assembly is limited to the fastening column, and the sealing of the liquid injection through hole is further enhanced. The mutual limitation between the sealing plug assembly and the fastening column can prevent the fastening column from falling off, thereby further ensuring the sealing effect of the liquid injection through hole.

[0004] In order to achieve the above-mentioned object, the utility model provides a matching type chemically formed nail on one hand, and the matching type chemically formed nail comprises:

[0005] A sealing plug assembly, comprising a base and a plug, wherein the plug is used to be inserted into the liquid injection through hole of the battery cover to be packaged, and a positioning countersunk hole is arranged inside the plug;

[0006] A fastening column, used for inserting into the positioning counterbore to seal the liquid injection through hole;

[0007] The inner edge of the base is provided with a stopper, and the side wall of the fastening column is provided with a locking member that cooperates with the stopper to limit the position.

[0008] Preferably, the base is in a truncated cone shape, and a bottom surface of the base with a larger radius is in contact with the battery cover.

[0009] Preferably, a guide through hole is provided inside the base, and the stopper is provided on the inner wall of the guide through hole.

[0010] Preferably, the side wall of the fastening column is also provided with a clamping ring, which is arranged at one end of the locking member away from the tip of the fastening column and is used to cooperate with the locking member to clamp the stop member when the fastening column is assembled with the sealing plug assembly.

[0011] Preferably, the angle of the stopper at the inner edge of the base is 240°;

[0012] The locking piece is inserted into the guide through hole, and the angles of the locking piece and the guide through hole are equal, which is 120°.

[0013] Preferably, the angle of the clamping ring is 360°, and a marking symbol is provided on the clamping ring;

[0014] The included angle between the marking symbol and the center line of the locking member is 180°, and the horizontal distance between the edge of the clamping ring and the center line of the fastening column is smaller than the radius of the guide through hole.

[0015] Preferably, an operating ring is provided at one end of the fastening column close to the clamping ring, and a horizontal distance between an edge of the operating ring and a center line of the fastening column is smaller than a horizontal distance between an edge of the clamping ring and a center line of the fastening column.

[0016] Preferably, the injection through hole is divided into an inner through hole and an outer through hole, the outer through hole is arranged on a side of the battery cover plate close to the outside, the inner through hole is connected to the outer through hole, and the edge radius of the outer through hole close to the inner through hole is smaller than the edge radius close to the outside;

[0017] The end of the plug near the base is provided with a plug angle for cooperating with the outer through hole for positioning.

[0018] Preferably, the mating type chemical nail further comprises a disassembly piece, and a positioning column is provided at the bottom of the disassembly piece for inserting into the top end of the positioning countersunk hole;

[0019] The side wall of the disassembly member is provided with a locking member that cooperates with the stop member to limit position.

[0020] Preferably, the sealing plug assembly is made of rubber, and the fastening column and disassembly member are made of stainless steel.

[0021] Through the above technical scheme, the chemical nail has a clearance fit between the sealing plug assembly and the liquid injection through hole, and the fastening column is inserted into the positioning counterbore of the sealing plug assembly to guide the sealing plug assembly to seal the liquid injection through hole, which can avoid the sealing of the chemical nail of a separate elastic rubber, thereby improving the service life of the chemical nail and reducing the cost; and through the setting of the locking piece of the fastening column and the limiting match of the stopper on the base of the sealing plug assembly, the sealing plug assembly limits the fastening column, and the sealing of the sealing plug assembly to the liquid injection through hole is further enhanced. The mutual limiting between the sealing plug assembly and the fastening column can avoid the fastening column from falling off, and the liquid injection through hole is further guaranteed. Sealing effect; and the base of the sealing plug assembly is set to be truncated cone-shaped for easy installation and operation; the plug angle and the inner and outer through holes are arranged to cooperate in positioning to enhance the stability of the battery cover seal, reduce the resistance and friction during insertion, and reduce the risk of damage or deformation of the plug during the insertion process; a disassembly part is also provided, which is inserted into the positioning countersunk hole of the plug, but does not squeeze the plug, but only serves as a positioning function, so that after the sealing plug assembly is removed from the injection through hole, the wear and deformation of the plug can be reduced, and the effective elasticity of the plug is ensured; the materials of the sealing plug assembly and the fastening column are reasonably set to improve the sealing effect of the chemical nail and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional schematic diagram of a matching type forming nail according to an embodiment of the utility model when it is inserted into the injection through hole of the battery cover of the sealed battery to complete the interference seal;

[0023] Figure 2 It is a cross-sectional schematic diagram of a sealing plug assembly of a matching type chemically formed nail according to an embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a sealing plug assembly of a matching type chemically formed nail according to an embodiment of the utility model;

[0025] Figure 4 It is a top view schematic diagram of a sealing plug assembly of a matching type chemically formed nail according to an embodiment of the utility model;

[0026] Figure 5 is a cross-sectional schematic diagram of a fastening column of a matching type chemical nail according to an embodiment of the utility model;

[0027] Figure 6 It is a left schematic view of a fastening column of a matching type nail according to an embodiment of the utility model;

[0028] Figure 7 It is a structural schematic diagram of a fastening column of a matching type formed nail according to an embodiment of the utility model;

[0029] Figure 8 It is a left side schematic diagram of a disassembly part of a matching type chemical nail according to an embodiment of the utility model;

[0030] Fig. 9 It is a structural schematic diagram of a disassembly part of a matching type chemical nail according to an embodiment of the utility model;

[0031] Fig.10 It is a schematic structural diagram of a battery cover according to an embodiment of the utility model.

[0032] Description of Reference Numerals

[0033] 1. Battery cover 2. Sealing plug assembly

[0034] 3. Fastening column 4. Disassembly parts

[0035] 11. External through hole 12. Internal through hole

[0036] 21. Base 22. Plug Angle

[0037] 23. Plug 24. Guide hole

[0038] 25. Positioning counterbore 211, stopper

[0039] 31. Clamping ring 32. Locking piece

[0040] 33. Operation ring 311. Marking symbol

[0041] 41. Positioning column 42. Positioning piece DETAILED DESCRIPTION

[0042] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.

[0043] like Figure 1 FIG. 1 is a cross-sectional schematic diagram of a matching type forming nail inserted into a liquid injection through hole of a battery cover of a sealed battery according to an embodiment of the utility model; Figure 2 FIG. 1 is a cross-sectional schematic diagram of a sealing plug assembly of a mating type chemically formed nail according to an embodiment of the present utility model; Figure 3 FIG. 1 is a schematic structural diagram of a sealing plug assembly of a mating type chemically formed nail according to an embodiment of the present utility model; Figure 4 FIG. 1 is a top view of a sealing plug assembly of a mating type chemically formed nail according to an embodiment of the present utility model; Figure 5 FIG. 1 is a cross-sectional schematic diagram of a fastening column of a matching type chemical nail according to an embodiment of the present utility model; Figure 6 FIG. 1 is a left side schematic diagram of a fastening column of a matching type nail according to an embodiment of the utility model; Figure 7 FIG. 1 is a schematic structural diagram of a fastening column of a matching type chemical nail according to an embodiment of the present utility model; Fig.10 The figure shows a schematic diagram of the structure of a battery cover according to an embodiment of the present utility model. Figure 1 In the embodiment, the mating type forming nail includes a sealing plug assembly 2 and a fastening column 3. Specifically, the sealing plug assembly 2 includes a base 21 and a plug column 23. The plug column 23 is used to be inserted into the liquid injection through hole of the battery cover plate 1 to be packaged, and a positioning countersunk hole 25 is provided inside the plug column 23. The fastening column 3 is inserted into the positioning countersunk hole 25 of the sealing plug assembly 2 to guide the sealing plug assembly 2 to interfere with the liquid injection through hole of the battery cover plate 1. Figure 1 In the upper circle, a stopper 211 can also be provided on the inner edge of the base 21, and a locking member 32 that cooperates with the stopper 211 to limit the position is also provided on the side wall of the fastening column 3. The fastening column 3 needs to be rotated 180° in the sealing plug assembly 2 so that the locking member 32 and the stopper 211 can be matched, completing the limiting and locking operation of the sealing plug assembly 2 on the fastening column 3, thereby further enhancing the sealing of the sealing plug assembly 2 on the injection hole.

[0044] Through the above technical scheme, the matching type chemical nail has a clearance fit between the sealing plug assembly and the injection through hole, and the fastening column is inserted into the positioning countersunk hole of the sealing plug assembly to guide the sealing plug assembly to seal the injection through hole through interference, which can avoid the sealing of the chemical nail of a separate elastic rubber, thereby improving the service life of the chemical nail and reducing the cost; and by setting a locking piece of the fastening column and a stopper on the base of the sealing plug assembly to limit the fastening column, the sealing plug assembly is limited to the fastening column, and the sealing of the sealing plug assembly to the injection through hole is further enhanced. The mutual limitation between the sealing plug assembly and the fastening column can avoid the fastening column from falling off, and the sealing effect of the injection through hole is further guaranteed.

[0045] exist Figure 1 In order to facilitate the operator to press or the machine to fix the sealing plug assembly 2, thereby helping the fastening column 3 to be inserted into the sealing plug assembly 2 and improving the sealing performance of the base 21 to the injection hole, in one embodiment of the utility model, the shape of the base 21 can be a variety of shapes known to those skilled in the art. The base 21 can be truncated cone-shaped, and the bottom surface of the base 21 with a larger radius is in contact with the battery cover 1, and can completely cover the injection hole.

[0046] exist Figure 1 , 2As for 5, in order to further limit and lock the fastening column 3 in the sealing plug assembly 2, in one embodiment of the utility model, the side wall of the fastening column 3 can also be provided with a clamping ring 31. The clamping ring 31 can be set at one end of the locking member 32 away from the tip of the fastening column, and is used to cooperate with the locking member 32 to clamp the stop member 211 when the fastening column 3 and the sealing plug assembly 2 are assembled, thereby ensuring the locking of the fastening column 3 in the sealing plug assembly 2, and at the same time, it also strengthens the limiting effect of the fastening column 3 on the sealing plug assembly 2, thereby improving the sealing effect of the sealing plug assembly 3 on the injection hole.

[0047] exist Figure 1 , 2 As for 5, in order to improve the limiting effect of the locking member 32 and the stop member 211, and at the same time ensure that the locking member 32 can be inserted from the guide hole 24 to complete the cooperation with the stop member 211, in one embodiment of the utility model, the angle of the stop member 211 at the inner edge of the base 21 is 240°, the locking member 32 is inserted into the guide hole 24, and the angle between the locking member 32 and the guide hole 24 is equal, which is 120°; the stop member 211 with a larger angle can better match the locking member 32 to prevent the locking member 32 from falling off, and at the same time, the locking member 32 cooperates with the guide hole 24, and the angles of the two are both 120°, so that the locking member 32 can be smoothly inserted into the guide hole 24, and the stop member 211 cooperates after the locking member 32 rotates in the guide hole 24, and the angle ratio of the locking member 32 to the stop member 211 is appropriate, which can ensure the good limiting locking of the fastening column 3.

[0048] exist Figure 1 , 2 As for 5, in order to observe the locking condition of the locking piece 32 and ensure a good locking effect, in one embodiment of the utility model, the angle of the clamping ring 31 can be 360°, and a marking symbol 311 can be provided on the clamping ring 31, and the angle between the marking symbol 311 and the center line of the locking piece 32 is 180°, and the horizontal distance between the edge of the clamping ring 31 and the center line of the fastening column 3 is less than the radius of the guide through hole 24; since the angle between the marking symbol 311 and the center line of the locking piece 32 is 180° and the horizontal distance between the edge of the clamping ring 31 and the center line of the fastening column 31 is less than the radius of the guide through hole 24, during the rotation of the locking piece 32 in the guide through hole 24, the relative position of the marking symbol 311 and the guide through hole 24 can be used to understand the rotation condition of the unlocking piece 32 when observing the marking symbol 311.

[0049] exist Figure 1 , 2In addition, in order to facilitate the pressing and pulling of the fastening column 3 by the operator and the machine, in one embodiment of the utility model, an operating ring 33 is provided at one end of the fastening column 3 close to the clamping ring 31, and the horizontal distance between the edge of the operating ring 33 and the center line of the fastening column 3 is smaller than the horizontal distance between the edge of the clamping ring 31 and the center line of the fastening column 3. This allows the operating ring 33 to have a larger area to assist the operator or the machine in pressing and pulling, while preventing the operating ring from blocking the marking symbol 311 on the clamping ring 31, thereby ensuring the reliability of observing the rotation of the locking member 32 of the fastening column 3.

[0050] exist Figure 1 and 10 In order to improve the installation stability of the sealing plug assembly 2 and the injection through hole, reduce the resistance and friction when the plug 23 is inserted into the injection through hole, and reduce the risk of damage or deformation of the sealing plug assembly 2 during the insertion of the injection through hole; in one embodiment of the utility model, the injection through hole can be divided into an inner through hole 12 and an outer through hole 11, the outer through hole 11 is arranged on the side of the battery cover 1 close to the outside, the inner through hole 12 is connected to the outer through hole 11, and the edge radius of the outer through hole 11 close to the inner through hole 12 is smaller than the edge radius close to the outside, so that an inverted cone is formed in the outer through hole 11, which is convenient for the insertion of the plug 23, and at the same time, a plug angle 22 can be provided at one end of the plug 23 close to the base 21 for coordinating and positioning with the outer through hole 11, and the cooperation of the plug angle 22 with the outer through hole 11 can enhance the sealing effect.

[0051] like Figure 8 FIG. 1 is a left side schematic diagram of a disassembly member of a matching type chemical nail according to an embodiment of the present utility model; Fig. 9 FIG. 1 is a schematic structural diagram of a disassembly member of a matching type chemically formed nail according to an embodiment of the utility model; Figure 1 , 8In and 9, it is considered that after the fastening column 3 is taken out from the sealing plug assembly 2, due to the close fit between the sealing plug assembly 2 and the battery cover 1, and the base 21 of the sealing plug assembly 2 is truncated, the electrolyte of the battery is not affected, and it is inconvenient to directly take the sealing plug assembly 2 out of the injection through hole; in one embodiment of the utility model, the matching type chemical nail can also include a disassembly part 4, and the structure of the disassembly part 4 is similar to that of the fastening column 3, but the difference is that a positioning column 41 is provided at the bottom of the disassembly part 3, which is used to be inserted into the top of the positioning countersunk hole 25 to play a positioning role and will not expand the plug column 23. The side wall of the disassembly part 4 is provided with a locking part 42 that cooperates with the stopper 211 to limit the position. The locking part 42 can cooperate with the stopper 211, so that when the operator or the machine pulls the disassembly part 4 upward, the disassembly part 4 can drive the sealing plug assembly 2 to move at the same time, thereby improving the disassembly work efficiency, while avoiding the deformation of the plug column 23, ensuring the effective elasticity of the plug column 23, and extending the service life of the sealing plug assembly 2 and reducing the use cost.

[0052] In order to increase the service life of the matching type chemical nail and reduce the cost, in one embodiment of the utility model, the material of the sealing plug assembly 2 can be rubber, and the material of the fastening column 3 and the disassembly part 4 can be stainless steel. The fastening column 3 and the disassembly part 4 can reduce the influence of the electrolyte and increase the service life. The high-hardness fastening column 3 and the disassembly part 4 can be inserted into the sealing plug assembly 2 of the rubber material to interfere with the sealing injection hole. At the same time, in order to prevent the operator from being injured by the chemical nail and protect the operator, in one embodiment of the utility model, the bottom of the plug column 21, the bottom of the fastening column 3 and the bottom of the disassembly part 4 are inverted truncated cone shape to avoid the setting of sharp objects.

[0053] Through the above technical scheme, the chemical nail has a clearance fit between the sealing plug assembly and the liquid injection through hole, and the fastening column is inserted into the positioning counterbore of the sealing plug assembly to guide the sealing plug assembly to seal the liquid injection through hole, which can avoid the sealing of the chemical nail of a separate elastic rubber, thereby improving the service life of the chemical nail and reducing the cost; and through the setting of the locking piece of the fastening column and the limiting match of the stopper on the base of the sealing plug assembly, the sealing plug assembly limits the fastening column, and the sealing of the sealing plug assembly to the liquid injection through hole is further enhanced. The mutual limiting between the sealing plug assembly and the fastening column can avoid the fastening column from falling off, and the liquid injection through hole is further guaranteed. Sealing effect; the base of the sealing plug assembly is set to be truncated cone-shaped for easy installation and operation; the plug angle and the inner and outer through holes are set to cooperate and position, which enhances the stability of the battery cover seal, reduces the resistance and friction during insertion, and reduces the risk of damage or deformation of the plug during the insertion process; a disassembly part is also provided, which is inserted into the positioning counterbore of the plug, but does not squeeze the plug, but only serves as a positioning function, so that after the sealing plug assembly is removed from the injection through hole, the wear and deformation of the plug can be reduced, and the effective elasticity of the plug is ensured; the materials of the sealing plug assembly and the fastening column are reasonably set, which can improve the sealing effect of the chemical nail and reduce the cost;

[0054] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0055] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A matching type chemically formed nail, characterized in that: The matching type chemical nail comprises: A sealing plug assembly, comprising a base and a plug, wherein the plug is used to be inserted into the liquid injection through hole of the battery cover to be packaged, and a positioning countersunk hole is arranged inside the plug; A fastening column, used for inserting into the positioning counterbore to seal the injection through hole; The inner edge of the base is provided with a stopper, and the side wall of the fastening column is provided with a locking member that cooperates with the stopper to limit the position.

2. The matching type chemically formed nail according to claim 1, characterized in that: The base is in a truncated cone shape, and a bottom surface of the base with a larger radius contacts the battery cover.

3. The matching type chemically formed nail according to claim 1, characterized in that: A guide through hole is arranged inside the base, and the stopper is arranged on the inner wall of the guide through hole.

4. The matching type chemically formed nail according to claim 3, characterized in that: The side wall of the fastening column is also provided with a clamping ring, which is arranged at one end of the locking member away from the tip of the fastening column and is used to cooperate with the locking member to clamp the stop member when the fastening column and the sealing plug assembly are assembled.

5. The matching type chemically formed nail according to claim 4, characterized in that: The angle of the stopper at the inner edge of the base is 240°; The locking piece is inserted into the guide through hole, and the angles of the locking piece and the guide through hole are equal, which is 120°.

6. The matching type chemically formed nail according to claim 5, characterized in that: The angle of the clamping ring is 360°, and a marking symbol is provided on the clamping ring; The included angle between the marking symbol and the center line of the locking member is 180°, and the horizontal distance between the edge of the clamping ring and the center line of the fastening column is smaller than the radius of the guide through hole.

7. The matching type chemically formed nail according to claim 6, characterized in that: An operating ring is provided at one end of the fastening column close to the clamping ring, and a horizontal distance between an edge of the operating ring and a center line of the fastening column is smaller than a horizontal distance between an edge of the clamping ring and a center line of the fastening column.

8. The matching type chemically formed nail according to claim 1, characterized in that: The injection through hole is divided into an inner through hole and an outer through hole, the outer through hole is arranged on a side of the battery cover plate close to the outside, the inner through hole is connected to the outer through hole, and the edge radius of the outer through hole close to the inner through hole is smaller than the edge radius close to the outside; The end of the plug near the base is provided with a plug angle for cooperating with the outer through hole for positioning.

9. The matching type chemically formed nail according to claim 2, characterized in that: The matching type chemical nail also includes a disassembly piece, and a positioning column is provided at the bottom of the disassembly piece for inserting into the top end of the positioning countersunk hole; The side wall of the disassembly member is provided with a locking member that cooperates with the stop member to limit position.

10. The matching type chemically formed nail according to claim 9, characterized in that: The sealing plug assembly is made of rubber, and the fastening column and the disassembly part are made of stainless steel.

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