Battery cover plate with convex hull forming function
By setting protrusions as reinforcing ribs on the battery cover, the balance between cost and strength of the battery cover is solved, achieving the effect of reducing thickness and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 郑州广源电池材料有限公司
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-19
AI Technical Summary
Existing battery covers are difficult to balance between cost control and strength maintenance, resulting in high production costs and significant material waste.
The battery cover adopts a design with raised bumps, which reduces the thickness of the cover and the amount of material used by setting the raised part inside the cover as a reinforcing rib, while maintaining strength.
This achievement enables a reduction in battery cover thickness without compromising strength, saving 25% in production costs and improving production efficiency and material utilization.
Smart Images
Figure CN224264142U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery accessory manufacturing technology, specifically relating to a battery cover plate with a convex bulge. Background Technology
[0002] The battery cover is a core safety component of lithium batteries, located on top of the battery, and performs critical functions such as sealing, explosion protection, conductivity, and heat dissipation. Its main structure includes: a sealing layer, laser-welded to the casing to ensure the electrolyte inside the battery does not leak out and to isolate external contaminants such as moisture and dust; a safety protection component, an explosion-proof plate, which ruptures at the scored points when the internal pressure of the battery exceeds 0.4-0.8 MPa to release pressure and prevent explosion; terminals, connecting the internal and external circuits of the battery; the positive terminal is made of aluminum, and the negative terminal uses a copper-aluminum composite material to reduce electrolytic corrosion; and a heat dissipation design, with some covers integrating heat dissipation holes or thermal conductive structures to help control the battery temperature during high-load operation.
[0003] Currently, the market is becoming increasingly competitive, with prices being driven lower and lower. In order to save on production costs while ensuring that the battery cover has the same strength, a new type of battery cover structure is needed. Summary of the Invention
[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a battery cover with a convex bulge, thus solving the problems mentioned in the background art.
[0005] The purpose of this utility model is achieved as follows: A battery cover with a convex-shaped molding includes a plate body. The plate body has a positive terminal hole, a negative terminal hole, and an explosion-proof hole. A positive terminal is disposed inside the positive terminal hole, a negative terminal is disposed inside the negative terminal hole, and an explosion-proof sheet is disposed inside the explosion-proof hole. A faceplate is disposed at the upper end of the explosion-proof hole, and the plate body has reinforcing ribs. A positive terminal sealing ring is disposed between the positive terminal hole and the positive terminal, and a negative terminal sealing ring is disposed between the negative terminal hole and the negative terminal. A lower plastic layer is disposed at the bottom of the plate body, and an upper plastic layer is disposed at the top of the plate body.
[0006] Preferably, the reinforcing rib is a protrusion provided inside the plate body, and the protrusion is pressed out by a mold, which simplifies the processing.
[0007] The beneficial effects of this invention are as follows: By improving the battery cover plate, the original straight surface is transformed into a plate with a central protrusion. This protrusion acts as a reinforcing rib, and since the plate surface is no longer straight, its strength is increased. Therefore, the original 2mm thick plate can be compressed to 1.5mm while maintaining the same strength. By reducing the plate thickness, material consumption is reduced, and production costs are lowered, resulting in a 25% saving in production costs during mass production. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of a battery cover structure in the prior art;
[0009] Figure 2 This is a schematic diagram of the battery cover structure of this utility model;
[0010] Figure 3 This is a schematic diagram of the cross-sectional structure of the battery cover plate of this utility model;
[0011] Figure 4 This is the utility model Figure 3 Enlarged view of A in the middle.
[0012] In the diagram: 1. Plate body, 2. Positive electrode post hole, 3. Negative electrode post hole, 4. Explosion-proof sheet, 5. Reinforcing rib, 6. Negative electrode sealing ring, 7. Lower plastic, 8. Upper plastic, 9. Surface adhesive. Detailed Implementation
[0013] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that all directional terms such as up, down, front, back, left, and right appearing in the present invention are not intended to limit the present invention, but are only used to more clearly explain and interpret the present invention. Example
[0014] like Figure 1-4 As shown, this embodiment discloses a battery cover with a convex-shaped molding, including a plate body 1. The plate body 1 has a positive terminal hole 2, a negative terminal hole 3, and an explosion-proof hole. A positive terminal is disposed inside the positive terminal hole 2, a negative terminal is disposed inside the negative terminal hole 3, and an explosion-proof sheet 4 is disposed inside the explosion-proof hole. A faceplate 9 is disposed at the upper end of the explosion-proof hole, and a reinforcing rib 5 is disposed on the plate body 1. A positive terminal sealing ring is disposed between the positive terminal hole 2 and the positive terminal, and a negative terminal sealing ring 6 is disposed between the negative terminal hole 3 and the negative terminal. A lower plastic 7 is disposed below the plate body 1, and an upper plastic 8 is disposed above the plate body 1.
[0015] By improving the battery cover plate 1, the original straight surface is transformed into a plate with a central protrusion. This protrusion acts as a reinforcing rib 5. Since the surface of plate 1 is no longer straight, its strength is increased. Therefore, the original 2 mm thick plate 1 can be compressed to 1.5 mm while maintaining the same strength. By reducing the thickness of plate 1, material consumption is reduced, and production costs are lowered, resulting in a 25% saving in production costs during mass production. Example
[0016] like Figure 1-4 As shown, this embodiment discloses a battery cover with a convex-shaped molding, including a plate body 1. The plate body 1 has a positive terminal hole 2, a negative terminal hole 3, and an explosion-proof hole. A positive terminal is disposed inside the positive terminal hole 2, a negative terminal is disposed inside the negative terminal hole 3, and an explosion-proof sheet 4 is disposed inside the explosion-proof hole. A faceplate 9 is disposed at the upper end of the explosion-proof hole, and a reinforcing rib 5 is disposed on the plate body 1. A positive terminal sealing ring is disposed between the positive terminal hole 2 and the positive terminal, and a negative terminal sealing ring 6 is disposed between the negative terminal hole 3 and the negative terminal. A lower plastic 7 is disposed below the plate body 1, and an upper plastic 8 is disposed above the plate body 1.
[0017] By improving the battery cover plate 1, the original straight surface is transformed into a plate with a central protrusion. This protrusion acts as a reinforcing rib 5. Since the surface of plate 1 is no longer straight, its strength is increased. Therefore, the original 2 mm thick plate 1 can be compressed to 1.5 mm while maintaining the same strength. By reducing the thickness of plate 1, material consumption is reduced, and production costs are lowered, resulting in a 25% saving in production costs during mass production.
[0018] For better results, the reinforcing rib 5 is a protrusion provided inside the plate 1. The protrusion is pressed out by a mold, which simplifies the processing.
[0019] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A battery cover with a convex bulge, comprising a plate body, wherein the plate body has a positive terminal hole, a negative terminal hole, and an explosion-proof hole; a positive terminal is disposed inside the positive terminal hole, a negative terminal is disposed inside the negative terminal hole, and an explosion-proof sheet is disposed inside the explosion-proof hole, characterized in that: The plate is provided with reinforcing ribs.
2. The battery cover with convex bulge as described in claim 1, characterized in that: The reinforcing rib is formed by protrusions inside the plate.
3. The battery cover with convex bulge as described in claim 2, characterized in that: A positive electrode sealing ring is provided between the positive electrode hole and the positive electrode post, and a negative electrode sealing ring is provided between the negative electrode hole and the negative electrode post.
4. The battery cover with convex bulge as described in claim 3, characterized in that: A lower plastic layer is provided at the bottom of the plate, and an upper plastic layer is provided at the top of the plate.
5. The battery cover with convex bulge as described in claim 1, characterized in that: A faceplate is provided at the upper end of the explosion-proof hole.