Top cover plate and its cover assembly

Abstract

This utility model provides a top cover plate and its cover plate assembly, belonging to the field of mechanical technology. The top cover plate includes a long plate-shaped body with a through-hole at one end. A cylindrical positioning cylinder is located on the upper part of the body, communicating with the through-hole. The inner diameter of the positioning cylinder is larger than the diameter of the through-hole, and both are concentrically positioned. Several hooks protrude from the inner side of the upper end of the positioning cylinder, and these hooks are circumferentially distributed on the positioning cylinder. This top cover plate has a simple and compact structure.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and more specifically to a top cover sheet and its cover plate assembly. Background Technology

[0002] The battery cover assembly is an important part of the battery structure, playing a crucial role, especially in secondary batteries such as lithium-ion batteries. Its main functions include sealing, providing electrical connection points, and ensuring battery safety.

[0003] The top cover plate is a crucial component of the battery cover assembly, providing a stable position and connection for the electrodes. Existing top cover plates typically consist of a long, plate-shaped body with a through-hole at one end and a cylindrical positioning sleeve. To securely position the electrodes within the positioning sleeve, additional positioning plates are needed to position the lower part of the electrodes relative to the body, and additional welding rings are needed to position the upper part of the electrodes relative to the positioning sleeve.

[0004] As can be seen, the above structure makes the entire cover plate assembly too complex, and the numerous parts in the assembly process also result in not only low assembly efficiency, but also higher assembly requirements. Utility Model Content

[0005] The first objective of this invention is to address the aforementioned problems in the existing technology by providing a top cover sheet with a simple and compact structure that improves assembly efficiency.

[0006] The second objective of this invention is to provide a cover plate assembly employing the aforementioned top cover sheet.

[0007] To achieve the first objective, this utility model can be implemented through the following technical solutions:

[0008] A top cover plate includes a long plate-shaped body with a through connecting hole at one end and a cylindrical positioning cylinder on the upper part of the body, the positioning cylinder communicating with the connecting hole. The positioning cylinder is characterized in that its inner diameter is larger than the diameter of the connecting hole and both are concentrically positioned. The upper end of the positioning cylinder has several hooks protruding from its inner side, the hooks being circumferentially distributed on the positioning cylinder.

[0009] In the aforementioned top cover plate, the positioning cylinder has a through clearance hole, and the portion between the upper part of the clearance hole and the upper end of the positioning cylinder is a hook protruding from the inside of the positioning cylinder.

[0010] In the aforementioned top cover plate, the number of hooks is 3 to 10, and several hooks are evenly distributed circumferentially on the positioning cylinder.

[0011] In the aforementioned top cover plate, the portion from the inner side of the positioning cylinder to the side wall of the connecting hole on the main body along the projection direction perpendicular to the main body is the positioning part, and the aforementioned hook is located inside the positioning part along the projection direction perpendicular to the main body.

[0012] In the aforementioned top cover, the body, positioning cylinder, and hook are all integral structures.

[0013] In the aforementioned top cover, the hook is arc-shaped along the projection direction perpendicular to the body.

[0014] In the aforementioned top cover, the hook is W-shaped along the projection direction perpendicular to the body.

[0015] In the aforementioned top cover, the hook is V-shaped along the projection direction perpendicular to the body.

[0016] In the aforementioned top cover, the hook is trapezoidal along the projection direction perpendicular to the body.

[0017] To achieve the second objective, this utility model can be implemented through the following technical solutions:

[0018] A cover plate assembly includes the top cover plate, and also includes a lower plastic, an electrode, a sealing ring, and an upper plastic. The upper plastic, the lower plastic, and the sealing ring are all insulating materials. The electrode is located inside a positioning cylinder. The sealing ring is pressed tightly between the positioning part and the electrode. The upper plastic covers the space between the positioning cylinder and the electrode. The lower plastic is fixedly connected to the lower part of the body.

[0019] Compared with existing technologies, this top cover plate has hooks protruding from its inner side directly formed on the positioning cylinder. The electrode is then pressed tightly between the hooks and the positioning part, ensuring stable positioning within the positioning cylinder. It can be seen that the electrode's positioning stability can be guaranteed without adding any extra parts; therefore, its structure is simple.

[0020] Meanwhile, during assembly, only a portion of the positioning cylinder needs to be deformed under external force to form a hook protruding from the inside of the positioning cylinder. The assembly process is fast, the work efficiency is high, and it has great practical value. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the first design of the top cover plate.

[0022] Figure 2 This is a three-dimensional structural diagram of the second design for the top cover plate.

[0023] Figure 3 This is a three-dimensional structural diagram of the third scheme for the top cover plate.

[0024] Figure 4This is a three-dimensional structural diagram of the fourth scheme for the top cover plate.

[0025] Figure 5 This is a three-dimensional structural schematic diagram of the fifth scheme for the top cover plate.

[0026] Figure 6 This is a three-dimensional structural schematic diagram of the sixth scheme for the top cover plate.

[0027] Figure 7 This is a three-dimensional structural schematic diagram of the seventh scheme for the top cover plate.

[0028] Figure 8 This is a three-dimensional structural diagram of the cover plate assembly.

[0029] Figure 9 This is a cross-sectional structural diagram of the cover plate assembly.

[0030] Figure 10 yes Figure 9 A schematic diagram of the partial structure at part A in the middle.

[0031] In the picture:

[0032] 1. Body; 1a. Connecting hole; 1b. Clearance hole; 1c. Positioning part; 2. Positioning cylinder; 3. Hook; 4. Lower plastic; 5. Electrode; 6. Sealing ring; 7. Upper plastic. Detailed Implementation

[0033] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0034] Example 1

[0035] like Figure 1-7 As shown, the top cover includes a long plate-shaped body 1 with a through connecting hole 1a at one end. The upper part of the body 1 has a cylindrical positioning cylinder 2 that communicates with the connecting hole 1a. The inner diameter of the positioning cylinder 2 is larger than the diameter of the connecting hole 1a, and the two are concentric. The upper end of the positioning cylinder 2 has a hook 3 protruding from its inner side. There are several hooks 3, which are circumferentially distributed on the positioning cylinder 2.

[0036] The positioning cylinder 2 is used to install the electrode 5. This top cover innovatively has a hook 3 protruding from the inside of the positioning cylinder 2, which stably positions the electrode 5 inside the positioning cylinder 2.

[0037] As can be seen, this top cover plate omits the positioning piece and welding ring found in existing cover plate assemblies, resulting in a simple and compact structure. It also simplifies the subsequent assembly of the cover plate assembly.

[0038] Since there are several hooks 3, the electrode 5 can be stably positioned and connected inside the positioning cylinder 2 under the action of multiple hooks 3.

[0039] The positioning cylinder 2 has a through clearance hole 1b, and the part between the upper part of the clearance hole 1b and the upper end of the positioning cylinder 2 is a hook 3 protruding from the inside of the positioning cylinder 2.

[0040] The setting of the clearance hole 1b makes it easier for the positioning cylinder 2 to form the hook 3 under the action of external force.

[0041] The number of hooks 3 is three, and several hooks 3 are evenly distributed around the positioning cylinder 2. Depending on the actual situation, the number of hooks 3 can be five or even eight.

[0042] The circumferentially distributed hooks 3 can effectively improve its structural compactness.

[0043] Along the projection direction perpendicular to the main body 1, the part from the inner side of the positioning cylinder 2 on the main body 1 to the side wall of the connecting hole 1a is the positioning part 1c, and the hook 3 is located inside the positioning part 1c along the projection direction perpendicular to the main body 1.

[0044] The lower end of electrode 5 abuts against the positioning part 1c, and simultaneously, the hook 3 securely presses against electrode 5, ultimately positioning electrode 5 stably. Since the body 1 is made of metal, a flexible sealing ring 6 is required between the positioning part 1c and the lower end of electrode 5. The sealing ring 6 not only serves to insulate between electrode 5 and body 1 but also effectively eliminates the gap between the lower end of electrode 5 and positioning part 1c.

[0045] The main body 1, positioning cylinder 2, and hook 3 are all integral structures.

[0046] This effectively improves the overall structural compactness of the top cover.

[0047] Hooks come in various shapes, and the specific shape is chosen and applied according to the actual situation. There are four main types of hook shapes:

[0048] 1. Along the projection direction perpendicular to the body 1, the hook 3 is arc-shaped;

[0049] 2. Along the projection direction perpendicular to the body 1, the hook 3 is W-shaped;

[0050] 3. Along the projection direction perpendicular to the body 1, the hook 3 is V-shaped;

[0051] Fourth, along the projection direction perpendicular to the main body 1, the hook 3 is trapezoidal.

[0052] Different riveting fixtures can be used to form hooks 3 of corresponding shapes. Each of the above-mentioned hook shapes 3 can increase the contact area between itself and the electrode 5, ultimately achieving stable positioning of the electrode.

[0053] Because the top cover plate has hooks protruding from its inner side directly formed on the positioning cylinder, the electrode is pressed tightly between the hooks and the positioning part, ensuring stable positioning of the electrode within the positioning cylinder. It can be seen that the electrode's positioning stability can be guaranteed without adding any extra parts; therefore, its structure is simple.

[0054] Meanwhile, during assembly, only a portion of the positioning cylinder needs to be deformed under external force to form a hook protruding from the inside of the positioning cylinder. The assembly process is fast, the work efficiency is high, and it has great practical value.

[0055] Example 2

[0056] This cover plate assembly includes the aforementioned top cover sheet, and also includes a lower plastic 4, an electrode 5, a sealing ring 6, and an upper plastic 7. The upper plastic 7, lower plastic 4, and sealing ring 6 are all insulating materials. The electrode 5 is located inside the positioning cylinder 2. The sealing ring 6 is tightly pressed between the positioning part 1c and the electrode 5. The upper plastic covers the space between the positioning cylinder 2 and the electrode 5. The lower plastic 4 is fixedly connected to the lower part of the body 1. (See figure) Figure 8 and Figure 9 and Figure 10 As shown.

[0057] As can be seen, with the top cover plate using the above structure, the electrode 5 can be stably positioned in the positioning part inside the positioning cylinder 2 by means of the hook 3. Of course, the sealing ring 6 is located between the electrode 5 and the positioning part 1c, which not only ensures stable contact between the electrode 5 and the positioning part 1c, but also achieves a stable insulation effect.

[0058] Of course, the cover plate assembly also has an explosion-proof valve, but since it is existing technology, it will not be described in detail in the embodiments.

[0059] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0060] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A top cover sheet, comprising a long plate-shaped body, a through connecting hole at one end of the body, and a cylindrical positioning cylinder on the upper part of the body, the positioning cylinder communicating with the connecting hole, characterized in that, The inner diameter of the positioning cylinder is larger than the diameter of the connecting hole and both are set at the same center. The upper end of the positioning cylinder has a hook protruding from its inner side. There are several hooks, which are circumferentially distributed on the positioning cylinder.

2. The cap sheet of claim 1, wherein The positioning cylinder has a through clearance hole, and the portion between the upper part of the clearance hole and the upper end of the positioning cylinder is a hook protruding from the inside of the positioning cylinder.

3. The cap sheet of claim 2, wherein The number of hooks is 3 to 10, and several hooks are evenly distributed around the positioning cylinder.

4. The cap sheet of claim 3, wherein Along the projection direction perpendicular to the main body, the part from the inner side of the positioning cylinder to the side wall of the connecting hole on the main body is the positioning part, and the hook is located inside the positioning part along the projection direction perpendicular to the main body.

5. The cap sheet of claim 4, wherein The main body, positioning cylinder, and hook are all integral structures.

6. The lidding web of claim 1 or 2 or 3 or 4 or 5, wherein, Along the projection direction perpendicular to the body, the hook is arc-shaped.

7. The lidding web of claim 1 or 2 or 3 or 4 or 5, wherein, Along the projection direction perpendicular to the body, the hook is W-shaped.

8. The lidding sheet according to claim 1 or 2 or 3 or 4 or 5, wherein, Along the projection direction perpendicular to the body, the above-mentioned hook is V-shaped.

9. The lidding sheet according to claim 1 or 2 or 3 or 4 or 5, wherein, Along the projection direction perpendicular to the body, the hook is trapezoidal.

10. A cover plate assembly characterized by, The top cover sheet, as described in any one of claims 1-9, further includes a lower plastic, an electrode, a sealing ring, and an upper plastic. The upper plastic, the lower plastic, and the sealing ring are all insulating materials. The electrode is located inside the positioning cylinder. The sealing ring is pressed tightly between the positioning part and the electrode. The upper plastic covers the space between the positioning cylinder and the electrode. The lower plastic is fixedly connected to the lower part of the body.

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