Protective cover and battery welding device
By setting external and internal guide bevels on the grooved sidewall of the protective cover, the problem of protective cover deflection during welding was solved, resulting in better protection of the battery end, reduced losses and production costs, and improved welding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI LEAD INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-06-12
AI Technical Summary
During battery production, the protective cover is prone to deflection during welding, causing it to be welded to the terminal post at the end of the battery or for welding slag to splash into the battery, resulting in poor protection.
An outer guide bevel and an inner guide bevel are provided on the groove sidewall of the protective cover so that the positioning end face can remain in contact with the battery end. The outer guide bevel reduces the risk of separation between the positioning end face and the battery end face, while the inner guide bevel facilitates the entry of the terminal post into the groove and ensures synchronous rotation.
It improves the protection of the battery end, reduces the wear of the protective cover, lowers production costs, and improves welding yield and production efficiency.
Smart Images
Figure CN224355422U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of battery component technology, specifically relating to a protective cover and a battery welding device. Background Technology
[0002] During battery production, continuous full welding is required around the battery. Occasionally, the laser welding trajectory may deviate during welding, causing the weld to be applied to the terminal post at the end of the battery, or welding slag may splash from the liquid injection port at the end of the battery into the battery.
[0003] In existing technologies, protective caps are typically installed at the ends of the battery during welding to shield and protect the terminals and filling ports. However, during full welding, the protective cap rotates synchronously with the battery only through friction, which makes it easy for the protective cap to deflect from the battery end and extend beyond the battery end, resulting in poor protection. Utility Model Content
[0004] This application aims to provide a protective cover and a battery welding device, which at least solves one of the problems of the prior art.
[0005] According to a first aspect of this application, a protective cover is provided, comprising: a main body structure;
[0006] The main structure is provided with a groove, the groove has a bottom wall and a side wall, the side wall surrounds the periphery of the bottom wall, and the outer end face of the side wall is a positioning end face;
[0007] The outer surface of the sidewall is provided with an outer guide angle extending to the positioning end face; and / or, the inner surface of the sidewall is provided with an inner guide angle extending to the positioning end face.
[0008] Optionally, the angle of the outer guide angle is smaller than the angle of the inner guide angle.
[0009] Optionally, the angle range of the outer guide angle is 5° to 10°.
[0010] Optionally, the angle range of the inner guide bevel is 10° to 20°.
[0011] Optionally, in the height direction of the sidewall, the extension dimension of the outer guide angle is greater than the extension dimension of the inner guide angle.
[0012] Optionally, in the height direction of the sidewall, the extension dimension of the inner guide angle is less than or equal to one-third of the height dimension of the sidewall.
[0013] Optionally, the protective cover also includes a mounting portion connected to the side of the main structure away from the groove, the mounting portion being used to enable the main structure to be rotatably connected to an external structure.
[0014] According to a second aspect of this application, a battery welding apparatus is provided, comprising: the protective cover described in the first aspect, the protective cover being capable of abutting against the end of a battery via the positioning end face.
[0015] Optionally, the battery is provided with a terminal post and a liquid injection port at its end. The terminal post and the liquid injection port are both located inside the groove and have a first gap between them and the bottom wall of the groove.
[0016] Optionally, a second gap is provided between the pole post and the sidewall, the size of which is 0.1 mm to 0.2 mm.
[0017] In this application, by providing an outer guide angle and / or an inner guide angle on the groove sidewall of the protective cover, the positioning end face on the protective cover can remain in contact with the end of the battery when the protective cover rotates with the battery during the full welding process around the battery, thereby improving the protective effect of the protective cover on the end of the battery.
[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of the structure of the protective cover provided in this application;
[0021] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;
[0022] Figure 3 This is a partial cross-sectional view of the battery assembly provided in this application;
[0023] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle.
[0024] Figure label:
[0025] 1. Protective cover; 11. Main structure; 111. Bottom wall; 112. Side wall; 113. Positioning end face; 114. Outer guide angle; 115. Inner guide angle; 12. Mounting part; 2. Battery; 21. Terminal post; 22. Liquid filling port. Detailed Implementation
[0026] Embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application are within the scope of protection of this application.
[0027] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.
[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0030] The following is combined with Figures 1-4 This application describes a protective cover 1 and a battery welding apparatus according to embodiments thereof.
[0031] like Figures 1 to 2As shown, according to a first aspect of this application, a protective cover 1 is provided for use with a battery 2, comprising: a main body structure 11; the main body structure 11 is provided with a groove, the groove having a bottom wall 111 and a side wall 112, the side wall 112 surrounding the periphery of the bottom wall 111, and the outer end face of the side wall 112 being a positioning end face 113; the outer surface of the side wall 112 is provided with an outer guide angle 114 extending to the positioning end face 113; and / or, the inner surface of the side wall 112 is provided with an inner guide angle 115 extending to the positioning end face 113.
[0032] Specifically, in this embodiment, the protective cover 1 is used to protect the battery 2 during continuous full-scale peripheral welding, preventing welding to the terminal post 21 at the end of the battery 2 or preventing welding slag from splashing into the battery 2. The protective cover 1 provided in this application can abut against the end of the battery 2 through the positioning end face 113 at the outer end of the groove sidewall 112 during welding, so that the structure and components at the end of the battery 2 (such as the terminal post 21 and the liquid filling port 22) can be accommodated in the groove on the protective cover 1, avoiding welding to the terminal post 21 or welding slag splashing into the battery 2.
[0033] In the above structure, this application provides an outer guide angle 114 extending to the positioning end face 113 on the outer surface of the groove sidewall 112. On the one hand, this reduces the thickness of the positioning end face 113, decreasing the risk that the positioning end face 113 may separate from the end face of the battery 2 due to twisting when the protective cover 1 rotates with the battery 2, thus preventing the end face of the battery 2 from extending beyond the positioning end face 113. This avoids the risk of welding to the terminal post 21 or residue splashing onto the positioning end face 113, improving the protection effect for the terminal post 21 and the liquid injection port 22. On the other hand, the overall thickness of the sidewall 112 is not significantly weakened by the setting of the outer guide angle 114, ensuring the overall strength of the sidewall 112 and the blocking effect against splashing residue. In practical applications, this reduces the wear and tear on the protective cover 1 and lowers production costs.
[0034] Furthermore, the inner surface of the sidewall 112 of the groove can also be provided with an inner guide angle 115 extending to the positioning end face 113, so that when the protective cover 1 is assembled to the end of the battery 2, the inner guide angle 115 facilitates the easy assembly of the terminal post 21 at the end of the battery 2 into the groove of the protective cover 1, reduces the gap between the terminal post 21 and the sidewall 112 of the groove, ensures that the battery 2 and the protective cover 1 rotate synchronously, and at the same time, the sidewall 112 of the groove of the protective cover 1 will not extend beyond the end of the battery 2, avoids the terminal post 21 being laser welded, and improves the protection effect.
[0035] In the above structure, the outer guide angle 114 and the inner guide angle 115 on the outer and inner surfaces of the sidewall 112 of the groove can be set simultaneously, or only the outer guide angle 114 or the inner guide angle 115 can be set. The specific design is based on actual needs. The size, slope and other parameters of the outer guide angle 114 and the inner guide angle 115 can also be designed according to actual needs, and there are no restrictions here.
[0036] When the outer guide angle 114 and the inner guide angle 115 are set at the same time, it not only solves the problem that welding slag is easy to stick to the battery 2 during welding, but also solves the problem that spatter sticks to the positioning end face 113 during long-term welding, which eventually causes inaccurate positioning and affects the welding yield. It improves the protection effect, greatly reduces the consumption of the protective cover 1, and increases the positioning accuracy and the time for later maintenance and cleaning.
[0037] Optionally, such as Figures 3 to 4 As shown, the outer guide angle is 114 (reference). Figure 4 The angle α in the reference is less than the inner guide angle 115 (reference). Figure 4 The angle of β in the middle.
[0038] Specifically, in this embodiment, the outer guide angle 114 ensures that splashes stay away from the positioning end face 113, preventing contamination of the positioning end face 113. The inner guide angle ensures that the terminal post 21 of the battery 2 can easily enter the groove of the protective cover 1, ensuring that the battery 2 and the protective cover 1 can rotate synchronously and preventing the terminal post 21 from being laser welded. When the side wall 112 of the groove is simultaneously provided with an outer guide angle 114 and an inner guide angle 115, and the angle of the outer guide angle 114 is designed to be smaller than the angle of the inner guide angle 115, it avoids the outer guide angle 114 being too large and affecting the protection effect on the positioning end face 113, and the inner guide angle 115 being too small and affecting the assembly difficulty of the protective cover 1 and the end of the battery 2.
[0039] Optionally, such as Figures 3 to 4 As shown, the angle range of the outer guide angle 114 is 5° to 10°.
[0040] Specifically, in practical applications, an excessively large outer guide angle 114 can affect the strength of the groove sidewall 112, making it prone to breakage. Conversely, an excessively small outer guide angle 114 can result in poor protection against splashes adhering to the positioning end face 113. In this embodiment, the outer guide angle 114 is set between 5° and 10°, which effectively protects the positioning end face 113 from splashes while ensuring the support strength of the groove sidewall 112. Preferably, the angle of the outer guide angle 114 can be selected as 8°.
[0041] Optionally, such as Figures 3 to 4As shown, the inner guide angle 115 has an angle range of 10° to 20°.
[0042] Specifically, in practical applications, an excessively large inner guide angle 115 will also affect the strength of the groove sidewall 112, making it prone to breakage. Conversely, an excessively small inner guide angle 115 will result in an insignificant reduction in the distance between the pole post 21 and the inner surface of the sidewall 112, affecting the assembly difficulty. In this embodiment, the outer guide angle 114 is set between 10° and 20°, which ensures that the pole post 21 can easily enter the groove while maintaining the support strength of the groove sidewall 112. Preferably, the angle of the outer guide angle 114 can be selected as 15°.
[0043] Optionally, such as Figures 3 to 4 As shown, in the height direction of the sidewall 112 (X direction in the attached figure), the extension dimension of the outer guide angle 114 (refer to...) Figure 4 In the figure, d) is greater than the extension dimension of the inner guide bevel angle 115 (reference). Figure 4 (e in the text)
[0044] Specifically, in this embodiment, the outer guide angle 114 is disposed on the outer surface of the groove sidewall 112, and the inner guide angle 115 is disposed on the inner surface of the groove sidewall 112. In the height direction of the sidewall 112, the extension dimension of the outer guide angle 114 is greater than the extension dimension of the inner guide angle 115, which can ensure that the outer guide angle 114 is smaller and the inner guide angle 115 is larger. This ensures that the splashes are kept away from the positioning end face 113, while also ensuring that the terminal post 21 of the battery 2 can easily enter the groove of the protective cover 1, and the support strength of the groove sidewall 112 is improved, thereby enhancing the protective effect of the protective cover 1.
[0045] Optionally, such as Figures 3 to 4 As shown, in the height direction of the sidewall 112, the extension dimension of the inner guide angle 115 is less than or equal to one-third of the height dimension of the sidewall 112.
[0046] Specifically, in this embodiment, the extension dimension of the inner guide angle 115 is designed to be less than or equal to one-third of the height dimension of the side wall 112. This ensures that the angle of the inner guide angle 115 can easily allow the pole post 21 to enter the groove under different battery 2 sizes, while also preventing the angle of the inner guide angle 115 from being too large and affecting the support strength of the entire side wall 112, thereby improving the structural reliability of the protective cover 1.
[0047] Optionally, such as Figure 1 As shown, the protective cover 1 also includes a mounting part 12, which is connected to the side of the main body structure 11 away from the groove. The mounting part 12 is used to enable the main body structure 11 to be rotatably connected to the external structure.
[0048] Specifically, during the continuous full welding process of battery 2, the protective cover 1 needs to rotate together with battery 2. A mounting part 12 is provided on the side of the protective cover 1 away from the groove, so that it can be rotatably assembled onto the external structure, achieving the purpose of protecting the end of battery 2 on one side and enabling movable installation on the other side. The specific structural form of the mounting part 12 can be determined according to the external structure on which it is assembled, and is not limited here.
[0049] According to the second aspect of this application, such as Figures 3 to 4 As shown, a battery welding apparatus is provided, including: a protective cover 1 in the first aspect, which is capable of abutting against the end of a battery 2 via a positioning end face 113.
[0050] Specifically, in this embodiment, the protective cover 1 is applied to the battery 2. Based on the protective cover 1 provided by the first aspect, it can provide better protection for the battery 2. On the one hand, it reduces the wear and tear on the protective cover 1 during the entire welding process of the battery welding device, thereby reducing production costs. On the other hand, it avoids the operation steps of frequently replacing the protective cover 1 due to wear and tear, thus improving production efficiency. At the same time, the improved protection effect on the battery 2 further improves the production yield of the battery welding device for the battery 2.
[0051] In practical applications, the battery welding device may also include a rotary drive and a connecting structure. The battery shell 2 is fixed on the rotary drive, and the protective cover 1 is rotatably assembled through the connecting structure, so that the terminal posts 21 and other structures at the end of the battery 2 are located in the groove of the protective cover 1. The positioning end face 113 at the outer end of the side wall 112 abuts against the end of the battery 2, thereby enabling the protective cover 1 to rotate together with the battery 2 when the rotary drive drives the battery 2 to rotate. The inner guide angle 115 and the outer guide angle 114 on the inner and outer surfaces of the side wall 112 of the protective cover 1 improve the protection effect of the battery 2 and reduce the wear and tear of the protective cover 1.
[0052] Optionally, such as Figure 3 As shown, the end of the battery 2 is provided with a terminal post 21 and a liquid injection port 22. The terminal post 21 and the liquid injection port 22 are both located inside the groove and have a first gap between them and the bottom wall 111 of the groove.
[0053] Specifically, in this embodiment, a first gap is left between the electrode post 21 and the liquid injection port 22 and the bottom wall 111, which can prevent the electrode post 21 and other components from colliding with the bottom wall 111 of the groove during the welding process, thus preventing damage to the electrode post 21 and improving the protective effect of the protective cover 1.
[0054] Optionally, such as Figure 4 As shown, there is a second gap between the pole post 21 and the side wall 112 (reference). Figure 4c) In this context, the size of the second gap is 0.1mm to 0.2mm.
[0055] Specifically, in this embodiment, the protective cover 1 is disposed at the end of the battery 2. The second gap between the terminal post 21 and the side wall 112 can prevent the terminal post 21 from colliding with the side wall 112 of the groove, thereby improving the reliability of welding. The inner guide angle 115 allows the second gap between the side wall 112 and the terminal post 21 to be smaller, resulting in a larger distance between the positioning end face 113 and the edge of the end face of the battery 2. This prevents the protective cover 1 from extending beyond the edge of the end face of the battery 2 during rotation, thus improving the protective effect of the protective cover 1.
[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0057] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A protective cover, characterized in that, include: Main structure; The main structure is provided with a groove, the groove has a bottom wall and a side wall, the side wall surrounds the periphery of the bottom wall, and the outer end face of the side wall is a positioning end face; The outer surface of the sidewall is provided with an outer guide angle extending to the positioning end face; and / or, the inner surface of the sidewall is provided with an inner guide angle extending to the positioning end face.
2. The protective cover according to claim 1, characterized in that, The angle of the outer guide bevel is smaller than the angle of the inner guide bevel.
3. The protective cover according to claim 1, characterized in that, The angle range of the outer guide bevel is 5° to 10°.
4. The protective cover according to claim 1, characterized in that, The angle range of the inner guide bevel is 10° to 20°.
5. The protective cover according to claim 1, characterized in that, In the height direction of the sidewall, the extension dimension of the outer guide angle is greater than the extension dimension of the inner guide angle.
6. The protective cover according to claim 1, characterized in that, In the height direction of the sidewall, the extension dimension of the inner guide angle is less than or equal to one-third of the height dimension of the sidewall.
7. The protective cover according to claim 1, characterized in that, It also includes a mounting part connected to the side of the main structure away from the groove, the mounting part being used to enable the main structure to be rotatably connected to an external structure.
8. A battery welding apparatus, characterized in that, include: The protective cover according to any one of claims 1-6, wherein the protective cover is capable of abutting against the end of the battery via the positioning end face.
9. The battery welding apparatus according to claim 8, characterized in that, The battery has a terminal post and a liquid injection port at its end. Both the terminal post and the liquid injection port are located inside the groove and have a first gap between them and the bottom wall of the groove.
10. The battery welding apparatus according to claim 9, characterized in that, There is a second gap between the pole and the sidewall, and the size of the second gap is 0.1mm to 0.2mm.