A cylindrical aluminum shell battery cover
By replacing the nickel plating process with all-aluminum materials and aluminum-nickel composite sheets, the problem of excessive cost of cylindrical aluminum battery cover plate production is solved, double reduction of weight and cost is achieved, and the welding positioning effect is improved.
Patent Information
- Application Number
- CN202421175666.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In the prior art, the production process cost of cylindrical aluminum battery cover plate is too high after nickel plating with aluminum plate base material, resulting in high resource waste and cost.
The aluminum plate is made of all-aluminum material, and the nickel sheet is changed to aluminum-nickel composite sheet, and the components are connected by aluminum-based brazing welding to reduce the use area of nickel plating and reduce production costs.
Compared with the old solution, the overall weight of the finished product was reduced by 8% and the cost was reduced by 28.7%, while increasing the positioning effect of aluminum plates and connecting components to prevent the connection components from flowing with the solder during welding.
Smart Images
Figure CN222749593U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power batteries, in particular to a cylindrical aluminum shell battery cover plate. Background Art
[0002] The cylindrical aluminum battery cover is an important component of the cylindrical lithium-ion battery. It is usually made of aluminum material with good conductivity and heat dissipation performance. There are positive and negative connection points on the cover for connecting to the external circuit. In addition, there may be some safety devices on the cover, such as explosion-proof valves, to prevent dangers caused by overheating or overcharging of the battery.
[0003] like Figure 1 As shown, in the original cylindrical aluminum battery cover manufacturing process, nickel is plated on the aluminum plate substrate 100, and then the nickel sheet 200 is soldered to the nickel-plated aluminum plate substrate 100 through lead-free solder paste. Specifically, since the nickel sheet 200 has a poor welding effect with pure aluminum, it is necessary to first nickel-plate the aluminum plate substrate 100. Nickel plating of the aluminum plate substrate 100 is an expensive process, and the cost is calculated based on the nickel-plated area. Nickel plating on the aluminum plate substrate 100 will result in a lot of waste aluminum plate substrates 100 that have been nickel-plated after the product is formed (such as scraps after stamping), so that part of the cost of nickel plating the aluminum plate substrate 100 is wasted, thereby making the cost high. Utility Model Content
[0004] In order to solve the technical problem in the prior art that the production process cost of cylindrical aluminum battery cover plates is too high after the aluminum plate substrate is nickel-plated and then welded with nickel sheets, the present application proposes a cylindrical aluminum shell battery cover plate to solve the above technical problem.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] The utility model provides a cylindrical aluminum shell battery cover plate, comprising: an aluminum plate, the aluminum plate is made of all-aluminum material; a connecting component, the connecting component comprises a nickel-based material sheet away from the aluminum plate and an aluminum-based material sheet close to the aluminum plate, the nickel-based material sheet and the aluminum-based material sheet are connected to each other, and the aluminum-based material sheet of the connecting component is welded to the aluminum plate by an aluminum-based solder.
[0007] The cylindrical aluminum shell battery cover of the utility model improves the previous manufacturing process. The aluminum plate is no longer nickel-plated, but the previous nickel sheet is changed to an aluminum-nickel composite sheet. The use area of the aluminum-nickel composite sheet is much smaller than that of the aluminum sheet, and there is less waste. Compared with the old solution, the overall weight of the finished product is reduced by 8% and the cost is reduced by 28.7%, thereby solving the technical problem of high production process cost of cylindrical aluminum battery cover in the prior art that the aluminum plate substrate is nickel-plated and then welded with the nickel sheet.
[0008] Furthermore, a groove is formed at the center of the aluminum plate, and correspondingly, a protrusion is formed on the connecting component to fit into the groove. The connection between the aluminum plate and the connecting component increases the fit between the groove and the protrusion, thereby increasing the positioning effect, and the connecting component is not easy to flow with the solder during welding.
[0009] Further, the protrusion is formed on the aluminum-based material sheet.
[0010] Furthermore, a concave ring is formed at the center of the aluminum-based material sheet of the connecting component, and correspondingly, a convex ring is formed at the center of the nickel-based material sheet of the connecting component and fits into the concave ring, thereby facilitating the positioning and connection of the aluminum-based material sheet and the nickel-based material sheet of the connecting component.
[0011] Based on the above technical solution, the technical effects that can be achieved by the utility model are:
[0012] The cylindrical aluminum shell battery cover of the utility model improves the previous manufacturing process. The aluminum plate is no longer nickel-plated, but the previous nickel sheet is replaced with an aluminum-nickel composite sheet. The use area of the aluminum-nickel composite sheet is much smaller than that of the aluminum sheet, and there is less waste. Compared with the old solution, the overall weight of the finished product is reduced by 8%, and the cost is reduced by 28.7%, thereby solving the technical problem of the high production process cost of the cylindrical aluminum battery cover in the prior art, which adopts the aluminum plate substrate to be nickel-plated and then welded with the nickel sheet;
[0013] The cylindrical aluminum shell battery cover plate of the utility model has grooves and protrusions added to the connection between the aluminum plate and the connection component, thereby increasing the positioning effect, and the connection component is not easy to flow with the solder during welding. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of a cylindrical aluminum battery cover in the prior art.
[0015] Among them: 100-aluminum plate substrate; 200-nickel sheet.
[0016] Figure 2 It is a schematic diagram of the overall structure of the cylindrical aluminum battery cover of the present utility model.
[0017] In the utility model: 1-aluminum plate, 11-groove; 2-connecting assembly, 21-nickel-based material sheet, 22-aluminum-based material sheet, 23-protrusion, 24-concave ring, 25-convex ring. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0019] like Figure 2 As shown, the utility model provides a cylindrical aluminum shell battery cover plate, including an aluminum plate 1 and a connecting component 2, wherein the aluminum plate 1 is made of all-aluminum material, and the connecting component 2 includes a nickel-based material sheet 21 away from the aluminum plate 1 and an aluminum-based material sheet 22 close to the aluminum plate 1, the nickel-based material sheet 21 and the aluminum-based material sheet 22 are connected to each other, and the aluminum-based material sheet 22 of the connecting component 2 is welded to the aluminum plate 1 by aluminum-based brazing filler metal.
[0020] The cylindrical aluminum shell battery cover of the utility model improves the previous manufacturing process. Part of the aluminum plate 1 is no longer nickel-plated, but the previous nickel sheet is changed to an aluminum-nickel composite sheet. The use area of the aluminum-nickel composite sheet is much smaller than that of the aluminum sheet, and there is less waste. Compared with the old solution, the overall weight of the finished product is reduced by 8% and the cost is reduced by 28.7%, thereby solving the technical problem of the high production process cost of the cylindrical aluminum battery cover in the prior art that the aluminum plate 1 substrate is nickel-plated and then welded to the nickel sheet.
[0021] In order to facilitate positioning, a groove 11 is formed at the center of the aluminum plate 1, and accordingly, a protrusion 23 that fits into the groove 11 is formed on the connecting component 2. The connection between the aluminum plate 1 and the connecting component 2 increases the matching of the groove 11 and the protrusion 23, thereby increasing the positioning effect. During welding, the connecting component 2 is not easy to flow with the solder.
[0022] Furthermore, the protrusion 23 is formed on the aluminum-based material sheet 22 .
[0023] To facilitate positioning, a concave ring 24 is formed at the center of the aluminum-based material sheet 22 of the connecting component 2. Correspondingly, a convex ring 25 that fits into the concave ring 24 is formed at the center of the nickel-based material sheet 21 of the connecting component 2, thereby facilitating the positioning and connection of the aluminum-based material sheet 22 and the nickel-based material sheet 21 of the connecting component 2.
[0024] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.
Claims
1. A cylindrical aluminum shell battery cover, characterized in that: include: An aluminum plate (1), wherein the aluminum plate (1) is made of an all-aluminum material; A connecting component (2), the connecting component (2) comprising a nickel-based material sheet (21) away from the aluminum plate (1) and an aluminum-based material sheet (22) close to the aluminum plate (1), the nickel-based material sheet (21) and the aluminum-based material sheet (22) being connected to each other, and the aluminum-based material sheet (22) of the connecting component (2) being welded to the aluminum plate (1) by aluminum-based solder.
2. The cylindrical aluminum shell battery cover plate according to claim 1, characterized in that: A groove (11) is formed at the center of the aluminum plate (1), and correspondingly, a protrusion (23) is formed on the connection component (2) and fits into the groove (11).
3. The cylindrical aluminum shell battery cover plate according to claim 2, characterized in that: The protrusion (23) is formed on the aluminum-based material sheet (22).
4. The cylindrical aluminum shell battery cover plate according to claim 1, characterized in that: A concave ring (24) is formed at the center of the aluminum-based material sheet (22) of the connection component (2), and correspondingly, a convex ring (25) that fits into the concave ring (24) is formed at the center of the nickel-based material sheet (21) of the connection component (2).