A cylindrical battery steel shell assembly with a pole anti-rotation structure

Abstract

The utility model provides a cylindrical battery steel shell assembly with a pole anti-rotation structure, which belongs to the field of battery assembly technology. It includes: a steel shell and a pole, the middle part of one end of the steel shell has a through hole, the pole is inserted into the through hole, an upper insulating gasket and a steel gasket are arranged between the steel shell and the upper end face of the pole, the upper insulating gasket is embedded in the steel shell, the steel gasket is respectively embedded in the pole and the upper insulating gasket, a sealing ring and a lower insulating gasket are arranged between the steel shell and the lower end face of the pole, the lower end face of the pole is embedded in the lower insulating gasket. The utility model forms an anti-rotation structure by cooperating multiple components, thereby effectively increasing the rotation torque of the pole, making it less likely to rotate.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery assembly, and in particular relates to a cylindrical battery steel shell assembly with a pole anti-rotation structure. Background Art

[0002] Cylindrical batteries are a common type of battery. Their internal structure includes positive electrodes, negative electrodes, separators, and electrolytes. They are widely used in various portable electronic devices and energy storage systems. In the actual use of cylindrical batteries, various situations will be encountered. When the battery is shaken or vibrated, it will cause relative movement between the winding core and the cover plate, which can easily pull off the welds between the positive and negative pole ears and the cap assembly and the steel shell, causing power failures and inability to use normally. Currently, cylindrical batteries are mostly formed by riveting, which cannot overcome the above problems well. Utility Model Content

[0003] In view of this, the technical problem to be solved by the present invention is to provide a cylindrical battery steel shell assembly with a pole anti-rotation structure to effectively increase the pole rotation torque in view of the deficiencies in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a cylindrical battery steel shell assembly with a pole anti-rotation structure, comprising: a steel shell and a pole, a through hole is provided in the middle of one end of the steel shell, the pole is inserted into the through hole, an upper insulating gasket and a steel gasket are arranged between the steel shell and the upper end face of the pole, the upper insulating gasket is embedded in the steel shell, the steel gasket is respectively embedded in the pole and the upper insulating gasket, a sealing ring and a lower insulating gasket are arranged between the steel shell and the lower end face of the pole, and the lower end face of the pole is embedded in the lower insulating gasket.

[0005] Optionally, the pole includes an upper end surface, a lower end surface, and a connecting portion connecting the upper end surface and the lower end surface.

[0006] Optionally, a first groove is provided on the steel shell at the periphery of the through hole, a first protrusion is provided on the lower surface of the upper insulating gasket, and the first groove is cooperatively connected with the first protrusion.

[0007] Optionally, a second protrusion is provided on the upper surface of the upper insulating gasket, a first notch is provided on the outer edge of the steel pad, and the second protrusion is cooperatively connected with the first notch.

[0008] Optionally, a second notch is provided on the inner edge of the steel pad, a third protrusion is provided on the lower side of the upper end surface of the pole, and the second notch is cooperatively connected with the third protrusion.

[0009] Optionally, a portion of the outer edge of the sealing ring is threadedly connected to the steel shell, and the inner edge of the sealing ring is in contact with the outer surface of the connecting portion of the pole.

[0010] Optionally, the upper surface and side surfaces of the lower insulating gasket are in contact with the inner surface of the steel shell, a recessed platform is provided at the inner edge of the lower surface of the lower insulating gasket, and the lower end surface of the pole is embedded in the recessed platform.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model provides a cylindrical battery steel shell assembly with a pole anti-rotation structure based on the above technical solution. The anti-rotation structure is formed by the cooperation of multiple components, thereby effectively increasing the rotation torque of the pole and making it less likely to rotate.

[0013] The utility model comprises a cylindrical battery steel shell assembly with a pole anti-rotation structure, including a steel shell and a pole, an upper insulating gasket and a steel pad are arranged between the steel shell and the upper end face of the pole, a first protrusion on the lower surface of the upper insulating gasket is engaged with a first groove of the steel shell, and a second protrusion on the upper surface of the upper insulating gasket is matched with a first notch of the steel pad to form an anti-rotation structure; the upper end face of the pole is formed by riveting, and under the joint action of the riveting equipment and the steel pad, the third protrusion of the pole is embedded in the second notch of the steel pad to form an anti-rotation structure; a sealing ring and a lower insulating gasket are arranged between the steel shell and the lower end face of the pole, and under the action of the pole, the steel shell fits the lower insulating gasket, and the pole and the steel shell work together to compress the sealing ring so that the sealing ring can play a sealing role. Based on the structural coordination of the above-mentioned components, the utility model achieves the purpose of increasing the anti-rotation torque of the pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 : A schematic diagram of the structure of a cylindrical battery steel shell assembly with a pole anti-rotation structure according to the utility model;

[0016] Figure 2 : An exploded view of a cylindrical battery steel shell assembly with a pole anti-rotation structure according to the utility model;

[0017] Wherein: 1. steel shell; 101. first groove;

[0018] 2. Pole; 201. Upper end surface; 202. Lower end surface; 203. Connecting portion;

[0019] 3. Through hole;

[0020] 4. upper insulating gasket; 401. first convex block; 402. second convex block;

[0021] 5. Steel pad; 501. First notch; 502. Second notch;

[0022] 6. Sealing ring;

[0023] 7. Lower insulating gasket; 701. Sinking platform. DETAILED DESCRIPTION

[0024] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0025] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein are interpreted accordingly.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and cannot be understood as limiting the present invention.

[0029] like Figure 1 and Figure 2 As shown, a cylindrical battery steel shell assembly with a pole anti-rotation structure includes: a steel shell 1 and a pole 2, a through hole 3 is provided in the middle of one end of the steel shell 1, the pole 2 is penetrated in the through hole 3, an upper insulating gasket 4 and a steel gasket 5 are arranged between the steel shell 1 and the upper end surface 201 of the pole 2, the upper insulating gasket 4 is engaged with the steel shell 1, the steel gasket 5 is engaged with the pole 2 and the upper insulating gasket 4 respectively, a sealing ring 6 and a lower insulating gasket 7 are arranged between the steel shell 1 and the lower end surface 202 of the pole 2, and the lower end surface 202 of the pole 2 is engaged with the lower insulating gasket 7.

[0030] like Figure 2 As shown, the pole 2 includes an upper end surface 201 , a lower end surface 202 , and a connecting portion 203 connecting the upper end surface 201 and the lower end surface 202 .

[0031] Exemplarily, the cross-sectional area of ​​the connecting portion 203 is smaller than the cross-sectional area of ​​the upper end surface 201 , and the cross-sectional area of ​​the upper end surface 201 is smaller than the cross-sectional area of ​​the lower end surface 202 .

[0032] like Figure 2 As shown, a first groove 101 is provided on the steel shell 1 at the periphery of the through hole 3 , a first protrusion 401 is provided on the lower surface of the upper insulating gasket 4 , and the first groove 101 is matched and connected with the first protrusion 401 .

[0033] Exemplarily, the cross-sectional shape of the first groove 101 is a rectangle, and the cross-sectional shape of the first protrusion 401 is a rectangle.

[0034] like Figure 2 As shown, a second protrusion 402 is disposed on the upper surface of the upper insulating gasket 4 , a first notch 501 is disposed on the outer edge of the steel gasket 5 , and the second protrusion 402 is matched and connected with the first notch 501 .

[0035] Exemplarily, the cross-sectional shape of the second protrusion 402 is a rectangle, and the cross-sectional shape of the first notch 501 is a rectangle.

[0036] Based on the above technical solution, the first protrusion 401 on the lower surface of the upper insulating gasket 4 is engaged with the first groove 101 of the steel shell 1, and the second protrusion 402 on the upper surface of the upper insulating gasket 4 cooperates with the first notch 501 of the steel gasket 5 to form an anti-rotation structure.

[0037] like Figure 2 As shown, a second notch 502 is provided on the inner edge of the steel pad 5, a third protrusion (not shown in the figure) is provided on the lower side of the upper end surface 201 of the pole 2, and the second notch 502 is matched and connected with the third protrusion.

[0038] Exemplarily, the cross-sectional shape of the second notch 502 is a triangle, and the cross-sectional shape of the third protrusion is a triangle.

[0039] Based on the above technical solution, the upper end surface 201 of the pole 2 is formed by riveting. Under the joint action of the riveting equipment and the steel pad 5, the third protrusion of the pole 2 is embedded in the second notch 502 of the steel pad 5 to form an anti-rotation structure.

[0040] like Figure 2 As shown, a portion of the outer edge of the sealing ring 6 is connected to the steel shell 1 , and the inner edge of the sealing ring 6 is in contact with the outer surface of the connecting portion 203 of the pole 2 .

[0041] like Figure 2 As shown, the upper surface and side surface of the lower insulating gasket 7 are in contact with the inner surface of the steel shell 1 , a sink 701 is provided at the inner edge of the lower surface of the lower insulating gasket 7 , and the lower end surface 202 of the pole 2 is embedded in the sink 701 .

[0042] Exemplarily, the cross-sectional shape of the sink is circular.

[0043] In this way, under the action of the pole 2, the steel shell 1 fits with the lower insulating gasket 7, and the pole 2 and the steel shell 1 work together to compress the sealing ring 6, so that the sealing ring 6 can play a sealing role.

[0044] Therefore, the utility model achieves the purpose of increasing the anti-rotation torque of the pole based on the structural coordination of the above-mentioned components.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cylindrical battery steel shell assembly with a pole anti-rotation structure, characterized in that: include: A steel shell and a pole, wherein a through hole is provided in the middle of one end of the steel shell, and the pole is inserted into the through hole; an upper insulating gasket and a steel gasket are arranged between the steel shell and the upper end surface of the pole, and the upper insulating gasket is engaged with the steel shell, and the steel gasket is engaged with the pole and the upper insulating gasket respectively; a sealing ring and a lower insulating gasket are arranged between the steel shell and the lower end surface of the pole, and the lower end surface of the pole is engaged with the lower insulating gasket.

2. A cylindrical battery steel shell assembly with a pole anti-rotation structure as claimed in claim 1, characterized in that: The pole includes an upper end surface, a lower end surface, and a connecting portion connecting the upper end surface and the lower end surface.

3. A cylindrical battery steel shell assembly with a pole anti-rotation structure as claimed in claim 2, characterized in that: A first groove is arranged on the steel shell at the periphery of the through hole, a first convex block is arranged on the lower surface of the upper insulating gasket, and the first groove is matched and connected with the first convex block.

4. A cylindrical battery steel shell assembly with a pole anti-rotation structure as claimed in claim 3, characterized in that: A second protrusion is arranged on the upper surface of the upper insulating gasket, a first notch is arranged on the outer edge of the steel pad, and the second protrusion is matched and connected with the first notch.

5. A cylindrical battery steel shell assembly with a pole anti-rotation structure as claimed in claim 4, characterized in that: A second notch is arranged on the inner edge of the steel pad, a third protrusion is arranged on the lower side of the upper end surface of the pole, and the second notch is matched and connected with the third protrusion.

6. A cylindrical battery steel shell assembly with a pole anti-rotation structure as claimed in claim 5, characterized in that: A portion of the outer edge of the sealing ring is connected to the steel shell, and the inner edge of the sealing ring is in contact with the outer surface of the connecting portion of the pole.

7. A cylindrical battery steel shell assembly with a pole anti-rotation structure as claimed in claim 6, characterized in that: The upper surface and side surface of the lower insulating gasket are in contact with the inner surface of the steel shell, a sink is provided at the inner edge of the lower surface of the lower insulating gasket, and the lower end surface of the pole is embedded in the sink.

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