Pole structure, battery top cover and single battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a pole structure, a battery top cover and a single battery. The pole structure comprises a pole body and a bottom plate, wherein the pole body is used for penetrating through and being fixed on a battery top cover; the bottom plate is used for limiting a battery top cover; the bottom plate is connected to one side of the column body, a mounting groove surrounding the periphery of the column body is formed in the bottom plate so that the mounting groove and the column body can be coaxially arranged, and the mounting groove is used for mounting a sealing piece so that at least part of the sealing piece can abut against the groove wall of the mounting groove. According to the battery top cover, the mounting groove is formed, so that when the battery top cover is assembled, the sealing element can be manually placed in the mounting groove and pressed, the sealing element abuts against the groove wall of the mounting groove, the friction force between the sealing element and the mounting groove is increased, and the problem that the sealing element falls off in the process of being transported to the next working procedure is solved. Meanwhile, the mounting groove is formed in the bottom plate, so that whether the sealing element is sleeved with the pole structure or not can be obviously seen, the problem of manual neglected loading is solved, and the manufacturing efficiency and the sealing performance of the battery top cover are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an electrode structure, a battery top cover, and a single battery cell. Background Technology

[0002] In the manufacturing process of battery top cover, a sealing ring is usually first installed on the outer sleeve of the terminal post, then it is passed through the lower plastic and the top cover sheet in sequence, and a plastic part is assembled on the top of the terminal post, and then the terminal post is fixed to achieve the forming of the battery cover assembly.

[0003] One issue is that after the sealing ring is fitted onto the terminal post, manufacturing tolerances may allow gaps between the seal and the terminal post. This can lead to the sealing ring detaching during transport to the next process, resulting in a missing seal. Consequently, the assembled battery top cover and individual cells leak air. Furthermore, the assembled battery top cover cannot be reworked to add a new sealing ring, meaning that top covers with missing seals must be scrapped, increasing manufacturing costs. Moreover, the process of fitting the sealing ring onto the terminal post is usually done manually, which can also lead to omissions, causing leaks and scrapping of the battery top cover. These problems severely impact the manufacturing efficiency of the battery top cover.

[0004] Therefore, there is an urgent need for a pole structure, a battery top cover, and a single battery cell. Utility Model Content

[0005] One objective of this invention is to provide a terminal post structure that can improve the risk of missing or falling sealing rings, and enhance the manufacturing efficiency and sealing performance of the battery top cover assembled with the terminal post structure.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The pole structure includes:

[0008] The column is used to be inserted and fixed to the top cover of the battery;

[0009] The base plate is used to limit the battery top cover; the base plate is connected to one side of the column, and the base plate has a mounting groove that surrounds the outer periphery of the column so that the mounting groove is coaxial with the column. The mounting groove is used to install a seal so that at least a portion of the seal abuts against the groove wall of the mounting groove.

[0010] Optionally, the end face of the column away from the base plate is a first connecting surface for electrical connection with an external source; the end face of the base plate away from the column is a second connecting surface for electrical connection with a battery cell.

[0011] Optionally, the cross-section of the above-mentioned mounting groove is arc-shaped, U-shaped, square, or V-shaped.

[0012] Optionally, the width of the mounting groove is W1, and the width of the seal is W2, where -0.1mm ≤ W1 - W2 ≤ 0.1mm.

[0013] Optionally, the groove depth of the mounting groove is D1, and the height of the seal is D2, where 1 / 3 ≤ D1 / D2 ≤ 1 / 2.

[0014] Optionally, the depth of the mounting groove is D1, the thickness of the base plate is D3, and 1 / 3≤D1 / D3≤1 / 2.

[0015] Another objective of this invention is to provide a battery top cover that can improve the risk of missing or falling sealing rings, and enhance the manufacturing efficiency and sealing performance of the battery top cover with the terminal post structure.

[0016] To achieve this objective, the present invention adopts the following technical solution:

[0017] The battery top cover includes a seal and the aforementioned terminal post structure, wherein the seal is disposed within the mounting groove of the aforementioned terminal post structure.

[0018] Optionally, it also includes a top cover, wherein the pole structure is insulated through the top cover, and the sealing element is sandwiched between the pole structure and the top cover.

[0019] Optionally, it also includes an upper plastic part and a lower plastic part, which are respectively disposed on both sides of the top cover. The upper plastic part is disposed on the outer periphery of the column to insulate the column from the top cover. The lower plastic part is disposed between the bottom plate and the top cover to insulate the bottom plate from the top cover.

[0020] Another objective of this invention is to provide a single-cell battery that can improve the risk of missing or falling sealing rings and enhance the manufacturing efficiency and sealing performance of the battery top cover with the terminal post structure.

[0021] To achieve this objective, the present invention adopts the following technical solution:

[0022] Individual battery cell, including the battery top cover mentioned above.

[0023] The beneficial effects of this utility model are:

[0024] This utility model provides a terminal post structure, a battery top cover, and a single battery cell. By creating an installation groove on the base plate, the sealing element can be manually placed into the groove and pressed during battery top cover assembly. This causes the sealing element to abut against the groove wall, increasing the friction between them and improving the problem of the sealing element falling off during transportation to the next process, thus improving assembly reliability. Furthermore, because the sealing element and the terminal post structure are different colors, and the installation groove is clearly visible on the base plate, it is easy to see whether the sealing element is fitted with the terminal post structure during installation. This improves the problem of manual omissions, enhances assembly reliability, and ultimately improves the manufacturing efficiency and sealing performance of the battery top cover with this terminal post structure. Attached Figure Description

[0025] Figure 1 This is an isometric view of the pole column structure provided in a specific embodiment of this utility model;

[0026] Figure 2 This is an isometric view of the pole post structure with a sealing element installed according to a specific embodiment of this utility model;

[0027] Figure 3 This is a cross-sectional view of the pole post structure with a sealing element installed according to a specific embodiment of this utility model.

[0028] In the picture:

[0029] 10. Column; 11. First connecting surface;

[0030] 20. Base plate; 21. Mounting groove; 22. Second connecting surface;

[0031] 200. Sealing components. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] The following reference Figures 1 to 3 This invention introduces the electrode post mechanism, battery top cover, and single battery cell provided by this utility model.

[0037] Please refer to Figures 1 to 3 This embodiment provides a terminal post structure, which includes a post 10 and a base plate 20. The post 10 is used to pass through and be fixed to the top cover of the battery. The base plate 20 is used to limit the positioning of the top cover of the battery. The base plate 20 is connected to one side of the post 10. The base plate 20 has a mounting groove 21 that surrounds the outer periphery of the post 10 so that the mounting groove 21 is coaxially arranged with the post 10. The mounting groove 21 is used to install a sealing element 200 so that at least a portion of the sealing element 200 abuts against the groove wall of the mounting groove 21.

[0038] In this embodiment, the terminal post structure features an installation groove 21 on the base plate 20. During battery top cover assembly, the seal 200 can be manually placed into the groove 21 and pressed, causing it to abut against the groove wall. This increases friction and reduces the risk of the seal 200 falling off during transport to the next process, improving assembly reliability. Furthermore, the different colors of the seal 200 and the terminal post structure, along with the clearly visible installation groove 21 on the base plate 20, make it easy to see whether the seal 200 is properly fitted with the terminal post structure during installation. This reduces the risk of manual omissions, further improving assembly reliability and ultimately enhancing the manufacturing efficiency and sealing performance of the battery top cover with this terminal post structure.

[0039] It is understood that the column 10 and the base plate 20 can be formed by integral processing or by separate setting and combined by processing methods such as welding; no specific limitation is made here.

[0040] Specifically, the end face of the column 10 away from the base plate 20 is the first connecting surface 11 for electrical connection with the outside; the end face of the base plate 20 away from the column 10 is the second connecting surface 22 for electrical connection with the battery cell. This achieves external connection at both ends of the electrode structure, allowing the electrode structure to transfer the charge in the single battery cell to the external structure.

[0041] Optionally, the cross-section of the mounting groove 21 is arc-shaped, U-shaped, square, or V-shaped. All of these configurations can achieve the limiting installation function of the mounting groove 21 on the seal 200, thereby increasing the friction between the seal 200 and the mounting groove 21 to prevent the seal 200 from falling off.

[0042] Optionally, the width of the mounting groove 21 is W1, and the width of the seal 200 is W2, with -0.1mm≤W1-W2≤0.1mm. This setting is due to the fact that the seal 200 has a certain manufacturing error. Within this range, the mounting groove 21 and the seal 200 are tightly assembled, thereby ensuring that there is friction between the two and preventing the problem of them falling off due to excessive gap.

[0043] Optionally, the groove depth of the mounting groove 21 is D1, and the height of the seal 200 is D2. 1 / 3≤D1 / D2≤1 / 2 can achieve tight sealing of the seal 200 and improve the problem of the seal 200 falling off.

[0044] Optionally, the groove depth of the mounting groove 21 is D1, and the thickness of the base plate 20 is D3, where 1 / 3≤D1 / D3≤1 / 2. This not only ensures that the mounting groove 21 can tightly restrain and limit the seal 200, but also avoids the problem of deformation and damage caused by the base plate 20 being too thin in some areas, thereby avoiding the impact on the conductivity of the pole structure.

[0045] This embodiment also provides a battery top cover, which includes a seal 200 and a terminal post structure as described in any of the above embodiments. The seal 200 is disposed within the mounting groove 21 of the terminal post structure. By adopting the above-described terminal post structure, the assembly reliability of the seal 200 during battery top cover installation is increased, thereby reducing the scrap rate, improving assembly efficiency and assembly speed, and ensuring the sealing performance of the battery top cover.

[0046] Furthermore, the battery top cover also includes a top cover component, an insulating terminal structure passing through the top cover component, and a sealing element 200 sandwiched between the terminal structure and the top cover component to achieve a seal between the top cover component and the terminal structure, thereby improving the sealing performance of the battery top cover.

[0047] Furthermore, the battery top cover also includes an upper plastic component and a lower plastic component, which are respectively disposed on both sides of the top cover component. The upper plastic component is disposed on the outer periphery of the column 10 to insulate the column 10 from the top cover component, and the lower plastic component is disposed between the base plate 20 and the top cover component to insulate the base plate 20 from the top cover component. This arrangement achieves insulation between the terminal structure and the top cover component, thereby improving the safety of the battery top cover.

[0048] Of course, the battery top cover also includes an explosion-proof structure, which is installed on the top cover to achieve the effect of explosion-proof pressure relief for the individual batteries on which the battery top cover is installed.

[0049] Furthermore, the battery cover assembly also includes an injection structure, which is disposed on the top cover to inject electrolyte into the individual cells on which the battery top cover is installed.

[0050] This embodiment provides a single-cell battery, which includes the battery top cover described in any of the above-described solutions. By using this battery top cover, the sealing performance of the single-cell battery is improved, and the assembly yield of the single-cell battery is increased.

[0051] It is understood that the specific type of battery cell can be a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid (or lead-acid) battery, a lithium-ion battery, a polymer lithium-ion battery, etc. The battery cell can also be a primary lithium-ion battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, etc., which will not be elaborated further here.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pole structure, characterized by Comprising: a column (10) for penetrating and fixing to a battery top cover; a bottom plate (20) for being positioned with the battery top cover; the bottom plate (20) is connected to one side of the column (10), the bottom plate (20) is provided with a mounting groove (21) around the outer periphery of the column (10), so that the mounting groove (21) is coaxially arranged with the column (10), and the mounting groove (21) is used for mounting a sealing element (200), so that at least part of the sealing element (200) abuts the groove wall of the mounting groove (21).

2. The pole structure of claim 1, wherein The end face of the column (10) away from the bottom plate (20) is a first connecting surface (11) for external electrical connection; the end face of the bottom plate (20) away from the column (10) is a second connecting surface (22) for electrical connection with the battery cell.

3. The pole structure of claim 1, wherein, The cross section of the mounting groove (21) is arc-shaped, U-shaped, square-shaped or V-shaped.

4. The pole structure of claim 1, wherein The groove width of the mounting groove (21) is W1, and the width of the sealing element (200) is W2, -0.1mm≤W1-W2≤0.1mm.

5. The pole structure of claim 4, wherein, The groove depth of the mounting groove (21) is D1, and the height of the sealing element (200) is D2, 1 / 3≤D1 / D2≤1 / 2.

6. The pole structure of claim 1, wherein The groove depth of the mounting groove (21) is D1, and the thickness of the bottom plate (20) is D3, 1 / 3≤D1 / D3≤1 / 2.

7. A battery top cover characterized by Comprising a sealing element (200) and the pole column structure according to any one of claims 1-6, the sealing element (200) is arranged in the mounting groove (21) of the pole column structure.

8. The battery header of claim 7, wherein, Further comprising a top cover element, the pole column structure is insulated and penetrates the top cover element, and the sealing element (200) is clamped between the pole column structure and the top cover element.

9. The battery header of claim 8, wherein, Further comprising an upper plastic element and a lower plastic element, the upper plastic element and the lower plastic element are arranged on both sides of the top cover element respectively, the upper plastic element is arranged on the outer periphery of the column (10), so that the column (10) and the top cover element are insulated, and the lower plastic element is arranged between the bottom plate (20) and the top cover element, so that the bottom plate (20) and the top cover element are insulated.

10. A single cell characterized by Comprising the battery top cover according to any one of claims 7-9.

Images