Punch-formed efficient conductive storage battery grid structure

Abstract

The invention relates to the technical field of storage batteries, in particular to a punch-formed efficient conductive storage battery grid structure which comprises an edge frame, a tab connecting part, a plurality of grid holes, fixing bayonets and auxiliary current guide ribs, the tab connecting part is arranged outside the edge frame and at the edge, the grid holes are sequentially arranged side by side, and the fixing bayonets are arranged at the edge of the edge frame. The frame is provided with a plurality of grid holes, the grid holes are formed in the edge frame, auxiliary current guiding ribs are arranged between the grid holes and the inner side of the frame, the grid holes facing the two sides of the edge frame are attached to the corresponding auxiliary current guiding ribs respectively, and a plurality of reinforcing ribs are arranged between the inner side of the edge frame and the two auxiliary current guiding ribs. According to the storage battery grid, the problems of non-uniform current distribution and insufficient structural stability of a traditional storage battery grid are solved by forming through a stamping process, optimizing the regular hexagonal grid layout of the grid holes and matching with the edge reinforcing frame, the current guide structure and the reinforced tab connecting part, so that the current conduction is more uniform and efficient.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to a stamped high-efficiency conductive battery grid structure. Background Technology

[0002] The grid is the core component of a battery, playing a crucial role in supporting the active materials and conducting current. Traditional battery grids are mostly made using casting processes, but casting is prone to problems such as uneven internal stress and insufficient grid precision. At the same time, traditional grids often use rectangular or simple polygonal grids, which have defects such as uneven current distribution (easily forming current concentration or weak areas in local areas) and insufficient structural strength (easily deformed and cracked during long-term charging and discharging). This results in low battery conductivity and short cycle life, making it difficult to meet the high-performance requirements of various scenarios. Summary of the Invention

[0003] To address the technical deficiencies in the prior art, this invention proposes a stamped high-efficiency conductive battery grid structure, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0004] A stamped high-efficiency conductive battery grid structure includes: an edge frame, a tab connection portion, mesh holes, a fixing slot, and auxiliary current guiding ribs. A tab connection portion is provided outside the edge frame at its edge. One end of the tab connection portion extends outward from the edge frame. A plurality of mesh holes are arranged side-by-side, each mesh hole being located within the edge frame. Auxiliary current guiding ribs are provided between the mesh holes and the inner side of the frame. The mesh holes facing both sides of the edge frame are respectively attached to the corresponding auxiliary current guiding ribs. A plurality of reinforcing ribs are provided between the inner side of the edge frame and two auxiliary current guiding ribs.

[0005] The edge frame, the electrode connecting part, the mesh hole, the fixing slot and the auxiliary current guide rib are all integrally set and formed by stamping process.

[0006] The width of the edge frame is 2-3mm.

[0007] The electrode connecting part is in a concave arc shape where it connects with the frame; the end of the electrode connecting part away from the frame 1 has a chamfered edge.

[0008] The plurality of the grid holes are arranged in a regular hexagonal shape; the center distance between two adjacent grid holes is 4-6mm, the border width of each grid hole is 1-2mm, and the corners of each grid hole are rounded with a radius of 0.3-0.5mm.

[0009] Each of the auxiliary current guide ribs extends along the length of the edge; the width of each of the auxiliary current guide ribs is 1-1.5mm.

[0010] The height of the reinforcing 6 is the same as the height of the edge frame, and the width of the reinforcing rib is 1-1.5mm.

[0011] The beneficial effects of this invention are as follows:

[0012] This invention belongs to the field of battery technology. The structure is formed by stamping process, and the hexagonal grid layout of the grid holes is optimized. Combined with the edge reinforcement frame, current guiding structure and reinforced electrode connection, it solves the problems of uneven grid current distribution and insufficient structural stability of traditional battery plates, so that the current conduction is more uniform and efficient, improves the charging and discharging performance and cycle life of the battery, and achieves good practical value. Attached Figure Description

[0013] Figure 1 This is a front view of a stamped high-efficiency conductive battery grid structure. Detailed Implementation

[0014] The embodiments of the present invention will be described below with reference to the accompanying drawings and related examples. The embodiments of the present invention are not limited to the following examples, and the present invention relates to the relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0015] like Figure 1 As shown, a stamped high-efficiency conductive battery grid structure includes: an edge frame 1, a tab connection part 2, a grid hole 3, a fixing slot 4, and an auxiliary current guiding rib 5. A tab connection part 2 is provided outside the edge frame 1 and at the edge. One end of the tab connection part 2 is away from the edge frame 1 and extends outward. A number of grid holes 3 are arranged side by side, and the number of grid holes 3 are respectively provided inside the edge frame 1. An auxiliary current guiding rib 5 is provided between the number of grid holes 3 and the inner side of the frame 1. The grid holes 3 facing the two sides of the edge frame 1 are respectively attached to the corresponding auxiliary current guiding rib 5. A number of reinforcing ribs 6 are provided between the inner side of the edge frame 1 and the two auxiliary current guiding ribs 5.

[0016] This invention belongs to the field of battery technology. The structure is formed by stamping process, and the hexagonal grid layout of the grid holes is optimized. Combined with the edge reinforcement frame, current guiding structure and reinforced electrode connection, it solves the problems of uneven grid current distribution and insufficient structural stability of traditional battery plates, so that the current conduction is more uniform and efficient, improves the charging and discharging performance and cycle life of the battery, and achieves good practical value.

[0017] After adopting the above structure, it is necessary to further explain:

[0018] Example 1

[0019] Stamping die preparation: According to the design parameters, the stamping die is processed. The die contains a regular hexagonal main grid unit cavity (center spacing 4mm, border width 1mm), an auxiliary current guiding rib cavity (width 1mm), an edge reinforcing frame cavity (width 2mm), a reinforcing rib 6 cavity (width 1mm), and an electrode connecting part cavity. At the same time, a rounded transition cavity (rounded radius 0.3mm) is designed at the corner of the regular hexagonal main grid unit.

[0020] Grid stamping: A lead alloy sheet (thickness selected according to the grid hole design requirements) that meets the material requirements of the battery grid is placed in a stamping die and stamped in one step by a stamping machine to obtain a grid blank; the grid blank is then deburred and other post-processed to obtain the battery grid structure.

[0021] Performance testing: The conductivity efficiency of the molded grid was tested. The results showed that the conductivity efficiency of the grid in this embodiment was improved by about 15% compared with the traditional cast rectangular grid. After 500 charge-discharge cycles, the grid deformation rate was only 1.8%, which is much lower than the 3.5% of the traditional cast grid.

[0022] Example 2

[0023] 1. Stamping Die Preparation: Process the stamping die, wherein the center spacing of the regular hexagonal main grid unit is 6mm, the border width is 2mm, the width of the auxiliary current guide rib is 1.5mm, the width of the edge reinforcing frame is 3mm, the width of the reinforcing rib 6 is 1.5mm, and the radius of the arc at the corner of the regular hexagonal main grid unit is 0.5mm.

[0024] 2. Plate grid stamping: Using a stamping process similar to that in Example 1, lead alloy plates are formed in one step by stamping dies, and then post-processed to obtain the plate grid structure.

[0025] 3. Performance testing: Tests showed that the conductivity of the grid in this embodiment is about 20% higher than that of the traditional cast rectangular grid; after 500 charge-discharge cycles, the grid deformation rate is 1.5%, demonstrating excellent structural stability.

[0026] The edge frame 1, the electrode connecting part 2, the mesh hole 3, the fixing bayonet 4 and the auxiliary current guiding rib 5 are all integrally set 1 and are formed as a whole by stamping process.

[0027] Following the above structure, further explanation is needed: The use of a regular hexagonal main grid cell array layout leverages the excellent spatial symmetry and current dispersion of the hexagon, enabling more uniform current conduction within the grid and preventing localized current overload. The center-to-center spacing between adjacent regular hexagonal main grid cells is 4-6 mm, and the frame width is 1-2 mm, ensuring sufficient adhesion area for active materials while maintaining grid structural strength. The corners of the regular hexagonal main grid cells are designed with rounded transition structures (radius 0.3-0.5 mm), formed by stamping with a rounded cavity of a stamping die, reducing stress concentration and preventing grid failure due to corner cracking during charge-discharge cycles. Furthermore, auxiliary current guiding ribs (1-1.5 mm wide) are provided along the length of the grid holes, integrally formed with the regular hexagonal main grid frame by stamping, further optimizing the current conduction path and improving conductivity.

[0028] The width of edge frame 1 is 2-3mm.

[0029] With the above structure, it should be further explained that: the edge frame 1 and the grid holes are integrally formed by stamping, which significantly enhances the structural stability of the grid edge and prevents the grid edge from warping and deforming during installation and use; the inner side of the edge reinforcing frame is provided with reinforcing ribs 6 (width 1–1.5mm, height consistent with the reinforcing frame), which are stamped by the rib-shaped cavity of the stamping die, and the reinforcing ribs 6 are connected to the grid holes, further improving the overall structural strength.

[0030] The junction of the tab connection 2 and the frame 1 is in an inwardly concave arc shape; the end of the tab connection 2 away from the frame 1 has a chamfered edge.

[0031] With the above structure, it should be further explained that: the top of the frame is integrally formed with the present invention by stamping, and the width of the top of the frame gradually increases from both sides towards the root of the electrode (which is the inwardly concave arc structure mentioned above). The gradually increasing width is 2-4mm. Strengthening the electrode connection can reduce the resistance in this area, avoid local overheating, improve conductivity, and at the same time improve the firmness of the connection between the electrode and the grid, so as to prevent the electrode from loosening during long-term use.

[0032] Several grid holes 3 are arranged in a regular hexagonal shape; the center distance between two adjacent grid holes 3 is 4-6mm, the border width of each grid hole is 1-2mm; the corners of each grid hole 3 are set with an arc structure with an arc radius of 0.3-0.5mm.

[0033] Each auxiliary current guide rib 5 extends along the length of the edge; the width of each auxiliary current guide rib 5 is 1-1.5mm.

[0034] The height of the reinforcing rib 6 is the same as the height of the edge frame, and the width of the reinforcing rib 6 is 1-1.5mm.

[0035] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A stamped high-efficiency conductive battery grid structure, comprising: The device comprises an edge frame, a tab connection, mesh holes, a fixing slot, and an auxiliary current guiding rib. The edge frame has a tab connection located outside its edge, with one end extending outwards from the edge frame. A plurality of mesh holes are arranged side-by-side within the edge frame. An auxiliary current guiding rib is positioned between the mesh holes and the inner side of the frame. The mesh holes facing both sides of the edge frame are respectively attached to the corresponding auxiliary current guiding ribs. A plurality of reinforcing ribs are provided between the inner side of the edge frame and two auxiliary current guiding ribs.

2. The high-efficiency conductive battery grid structure formed by stamping according to claim 1, characterized in that: The edge frame, the electrode connecting part, the mesh hole, the fixing slot and the auxiliary current guide rib are all integrally set and formed by stamping process.

3. The high-efficiency conductive battery grid structure formed by stamping according to claim 1, characterized in that: The width of the edge frame is 2-3mm.

4. The high-efficiency conductive battery grid structure formed by stamping according to claim 1, characterized in that: The junction of the electrode connecting part and the frame is in an inwardly concave arc shape. The tab connection part is located away from the edge of the frame, and the edge is chamfered.

5. The high-efficiency conductive battery grid structure formed by stamping according to claim 1, characterized in that: The aforementioned mesh holes are arranged in a regular hexagonal shape; The center-to-center distance between two adjacent mesh holes is 4-6 mm, and the border width of each mesh hole is 1-2 mm; Each of the aforementioned mesh holes has a rounded corner with a radius of 0.3-0.5 mm.

6. The high-efficiency conductive battery grid structure formed by stamping according to claim 1, characterized in that: Each of the aforementioned auxiliary current guiding ribs extends along the length direction of the edge section; The width of each of the aforementioned auxiliary current guide ribs is 1-1.5 mm.

7. The high-efficiency conductive battery grid structure formed by stamping according to claim 1, characterized in that: The height of the reinforcing rib is the same as the height of the edge frame, and the width of the reinforcing rib is 1-1.5mm.

Images