Battery pole structure

Abstract

The utility model discloses a battery pole structure which comprises a pole, a cover plate or a shell, a collector plate, an insulating component and a nut, the cover plate or the shell is provided with an outer convex step, an accommodating space is formed in the outer convex step, a through hole is formed in the outer convex step, the pole comprises a connecting seat and a pole body, one end of the pole body is connected with one side of the connecting seat, and the other end of the pole body is connected with the insulating component. The other side of the connecting seat is connected with the collector plate, the other end of the post body penetrates through the through hole, a thread is arranged on the outer side of the post body, the thread is matched with the nut for use, the insulating assembly is used for realizing insulation and sealing between the post and the cover plate or the shell and realizing insulation between the nut and the cover plate or the shell, and when the post body is connected with the nut, the connecting seat is positioned in the accommodating space. The beneficial effects are that the pole is connected with the collector plate through the connecting seat, and the connecting seat is embedded into the cover plate or the convex step of the shell, so that the utilization rate of the internal space of the shell is improved. And the pole and the cover plate or the shell are fixed through the nut, so that internal welding of the battery is avoided, foreign matter introduction is avoided, and the safety risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pole structure. Background Art

[0002] Currently, cylindrical batteries all have a pole structure. The commonly used pole structure is generally that the pole is first riveted to the shell or cover, and both ends of the cylindrical battery are planar structures. Cylindrical batteries can usually be divided into single-pass shells and double-pass shells according to whether the shell is open at one end or both ends. The other end of the single-pass shell is also divided into two structures: closed and center-opening. During the assembly process, for the open end of the shell, the cover is usually riveted to the adapter of the collector plate or the collector plate is laser spot welded to the battery cell and the shell wall. For the closed structure, the battery cell and the collector plate are usually welded and placed in the shell. The collector plate and the bottom of the shell are spot welded by inserting a resistance welding needle into the center of the battery cell. For the center-opening structure, the shell and the pole are usually riveted first, and then the battery cell and the collector plate are welded and placed in the shell. The collector plate and the pole are spot welded by inserting a resistance welding needle into the center of the battery cell. Connecting via a collector plate adapter inevitably results in bending of the adapter. This not only takes up space within the battery housing but also makes the bend prone to localized overheating, increasing battery safety risks. Welding into the battery interior can also introduce foreign material into the battery, creating safety risks. Therefore, a new battery terminal structure is urgently needed. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a battery terminal structure. The terminal is connected to the collector plate through a connecting seat, and the connecting seat is embedded in the outer protruding step of the cover plate or the shell, thereby improving the internal space utilization of the shell, reducing the blank space between the battery cell and the shell, and making the battery cell and the shell in close contact, which is beneficial to protecting the electrical connection point when the battery vibrates. The cover plate or the shell is clamped between the nut and the terminal connecting seat, avoiding internal welding of the battery, preventing the introduction of foreign matter during assembly, and reducing the safety risks of the battery.

[0004] The purpose of the utility model is achieved through the following technical measures: a battery pole structure, including a pole, a cover plate or a shell, and also including a collecting plate, an insulating assembly and a nut. The cover plate or the shell is provided with an outward protruding step, and a receiving space is formed in the outward protruding step. A through hole is provided on the outward protruding step. The pole includes a connecting seat and a column. One end of the column is connected to one side of the connecting seat, and the other side of the connecting seat is connected to the collecting plate. The other end of the column passes through the through hole and is provided with a thread on the outside. The thread is used in conjunction with the nut. The insulating assembly is used to achieve insulation and sealing between the pole and the cover plate or the shell, and to achieve insulation between the nut and the cover plate or the shell. When the column is connected to the nut, the connecting seat is located in the receiving space.

[0005] In some embodiments, the column and the connecting seat are connected via a limit platform, the radial cross-section of the limit platform is non-circular, and the limit platform is used in conjunction with the through hole.

[0006] In some embodiments, the radial cross-section of the limiting platform is polygonal.

[0007] In some embodiments, the insulating assembly includes an inner insulating sheet, an insulating sealing ring and an outer insulating sheet, the inner insulating sheet is arranged between the collecting plate and the cover plate or the shell, the insulating sealing ring is arranged between the pole and the cover plate or the shell, and the outer insulating sheet is arranged between the nut and the cover plate or the shell.

[0008] In some embodiments, the height of the accommodating space is slightly higher than the sum of the height of the connecting seat and the thickness of the insulating sealing ring.

[0009] In some embodiments, the insulating component is made of PET.

[0010] Compared with the prior art, the present invention has the following beneficial effects: the pole is connected to the collector plate via a connector, eliminating the need for an adapter. Furthermore, a protruding step is provided on the cover or housing, increasing the internal space of the housing, allowing the connector to be embedded within the housing, improving the internal space utilization of the housing, reducing the blank space between the battery cell and the housing, and ensuring close contact between the battery cell and the housing, which helps protect the electrical connection point when the battery vibrates. Furthermore, the present invention uses a nut and connector to clamp the cover or housing to achieve connection between the pole and the cover or housing, eliminating the need for internal welding in the battery and preventing the introduction of foreign matter during assembly, thereby reducing the safety risks of the battery.

[0011] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the split structure of the utility model without a limit table.

[0013] Figure 2 It is a schematic diagram of the split structure of the utility model with a limit table.

[0014] Figure 3 It is a structural diagram of the pole for setting the limit platform.

[0015] Among them, 1. cover plate, 2. collecting plate, 3. connecting seat, 4. column, 5. nut, 6. inner insulating sheet, 7. insulating sealing ring, 8. outer insulating sheet, 9. shell, 10. limit table. DETAILED DESCRIPTION

[0016] like Figures 1 to 3As shown, a battery pole structure includes a pole, a cover plate 1 or a shell 9, and also includes a collecting plate 2, an insulating assembly and a nut 5. The cover plate 1 or the shell 9 is provided with an outward convex step, and a receiving space is formed in the outward convex step. A through hole is provided on the outward convex step. The pole includes a connecting seat 3 and a column 4. One end of the column 4 is connected to one side of the connecting seat 3, and the other side of the connecting seat 3 is connected to the collecting plate 2. Preferably, the connecting seat 3 is welded to the collecting plate 2, and the other end of the column 4 passes through the through hole and is provided with a thread on the outside. The thread is used in conjunction with the nut 5. Specifically, if the through hole is provided on the cover plate 1, the column 4 passes through the through hole from the inner side of the cover plate 1 and is threadedly connected to the nut 5 provided on the outside of the cover plate 1. If the through hole is provided on the shell 9, the column 4 passes through the through hole from the inside of the shell 9 and is threadedly connected to the nut 5 provided on the outside of the shell 9. The insulating assembly is used to achieve insulation and sealing between the pole and the cover plate 1 or the shell 9, as well as to achieve insulation between the nut 5 and the cover plate 1 or the shell 9. When the column 4 is connected to the nut 5, the connecting seat 3 is located in the accommodating space. The pole of the present invention is connected to the collecting plate 2 through the connecting seat 3, without the need for an adapter, and by providing an outward protruding step through the cover plate 1 or the shell 9, the internal space of the shell 9 is increased, so that the connecting seat 3 is embedded in the accommodating space, thereby improving the utilization rate of the internal space of the shell 9, reducing the blank space between the battery cell and the shell 9, and making the battery cell in close contact with the shell 9, which is beneficial to protecting the electrical connection point when the battery vibrates. Moreover, the present invention clamps the cover plate 1 or the shell 9 through the nut 5 and the connecting seat 3 to achieve the connection between the pole and the cover plate 1 or the shell 9. There is no need for internal welding of the battery, no foreign matter is introduced during assembly, and the safety risk of the battery is reduced.

[0017] In some embodiments, the column 4 is connected to the connection base 3 via a stopper 10, the radial cross-section of which is non-circular, and the stopper 10 is used in conjunction with the through hole. It is understood that the shape of the radial cross-section of the through hole matches the shape of the radial cross-section of the stopper 10, the stopper 10 can be inserted into the through hole, and when the stopper 10 is inserted into the through hole, the pole cannot rotate about its axis. The radial cross-section of the stopper 10 can be polygonal, a combination of straight lines and curves, or a combination of multiple curves.

[0018] In some embodiments, the radial cross-section of the limiting platform 10 is polygonal, preferably hexagonal.

[0019] In some embodiments, the insulating assembly includes an inner insulating sheet 6, an insulating sealing ring 7, and an outer insulating sheet 8. The inner insulating sheet 6 is disposed between the collecting disc 2 and the cover plate 1 or the housing 9, and insulation between the collecting disc 2 and the cover plate 1 or the housing 9 is achieved through the inner insulating sheet 6. The insulating sealing ring 7 is disposed between the pole and the cover plate 1 or the housing 9, and insulation between the cover plate 1 or the housing 9 and the connecting seat 3 is achieved through the insulating sealing ring 7, while insulation between the cover plate 1 or the housing 9 and the column 4 is also achieved. Preferably, the axial cross-section of the insulating sealing ring 7 is Z-shaped. The outer insulating sheet 8 is disposed between the nut 5 and the cover plate 1 or the housing 9, and insulation between the nut 5 and the cover plate 1 or the housing 9 is achieved through the outer insulating sheet 8.

[0020] In some embodiments, the height of the accommodating space is slightly higher than the sum of the height of the connecting seat 3 and the thickness of the insulating sealing ring 7, so that after the pole and the cover plate 1 or the shell 9 are assembled, the insulating sealing ring 7 can achieve insulation between the cover plate 1 or the shell 9 and the pole, and can also achieve sealing between the cover plate 1 or the shell 9 and the pole.

[0021] In some embodiments, the insulating component is made of PET.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0026] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A battery terminal structure, comprising a terminal, a cover plate or a housing, characterized in that: It also includes a collecting plate, an insulating assembly and a nut. The cover plate or the shell is provided with an outwardly protruding step, and a receiving space is formed in the outwardly protruding step. A through hole is provided on the outwardly protruding step. The pole includes a connecting seat and a column. One end of the column is connected to one side of the connecting seat, and the other side of the connecting seat is connected to the collecting plate. The other end of the column passes through the through hole and is provided with a thread on the outside. The thread is used in conjunction with the nut. The insulating assembly is used to achieve insulation and sealing between the pole and the cover plate or the shell, and to achieve insulation between the nut and the cover plate or the shell. When the column is connected to the nut, the connecting seat is located in the receiving space.

2. The battery terminal structure according to claim 1, characterized in that: The column and the connecting seat are connected via a limiting platform, the radial cross section of the limiting platform is non-circular, and the limiting platform is used in conjunction with the through hole.

3. The battery terminal structure according to claim 2, characterized in that: The radial cross section of the limiting platform is polygonal.

4. The battery terminal structure according to claim 1, characterized in that: The insulating assembly includes an inner insulating sheet, an insulating sealing ring and an outer insulating sheet. The inner insulating sheet is arranged between the collecting disk and the cover plate or the shell, the insulating sealing ring is arranged between the pole and the cover plate or the shell, and the outer insulating sheet is arranged between the nut and the cover plate or the shell.

5. The battery terminal structure according to claim 4, characterized in that: The height of the accommodating space is slightly higher than the sum of the height of the connecting seat and the thickness of the insulating sealing ring.

6. The battery terminal structure according to claim 1, characterized in that: The insulating component is made of PET.

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