Long life battery grid

Abstract

The utility model discloses a long -life battery grid, including grid batten and pole lug, the grid batten one end is provided with with the upper frame of pole lug fixed connection, the one side of pole lug is provided with the bevel block at upper frame junction, between pole lug and bevel block, between pole lug other side and upper frame all are arc chamfer setting. The set bevel block can increase the connecting area between pole lug and upper frame, can disperse the concentrated stress of pole lug and upper frame junction to greater area, effectively avoided the production of micro -crack, promoted the fatigue resistance of grid, and the combination design of cooperation double arc chamfer is more favorable to the conduction of electric quantity, and the smooth transition of cooperation arc chamfer reduces the mutation in the current conduction process, reduces the local current density, slows down the grid corrosion rate, and the bevel block can improve the conductivity of grid, so that the charging efficiency is higher in the charge -discharge cycle process of battery.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a long-life battery grid. Background Technology

[0002] With the booming development of new energy electric vehicles in the global market, the demand for automotive starting batteries with smaller capacity and low state of charge has also increased significantly. Exploring starting lead-acid batteries that are more suitable for the operating conditions of new energy vehicles is an urgent market need.

[0003] The battery grid is the core component of a battery, primarily responsible for supporting the active materials and conducting current. Its structural rationality directly affects the battery's lifespan and performance. Traditional grids often have right-angle or simple transition connections between the tabs and the frame. During charge-discharge cycles, stress concentration easily occurs at the connection point, leading to microcracks. Simultaneously, uneven current distribution near the tabs, with excessively high local current density, accelerates the grid's corrosion rate and severely shortens the battery's lifespan. Utility Model Content

[0004] This invention addresses the problem of uneven current distribution and excessively high local current density near the electrode in existing technologies, and proposes the following technical solution: A long-life battery grid includes: a grid rib and a tab. One end of the grid rib is provided with an upper frame that is fixedly connected to the tab. A chamfered block is provided at the connection between one side of the tab and the upper frame. The tab and the chamfered block, and the other side of the tab and the upper frame are both provided with arc-shaped chamfers.

[0005] As a preferred embodiment of the above technical solution, the angle between the beveled block and the upper frame is 2-8°, which can effectively disperse the stress at the root of the electrode and guide the current to be conducted evenly, avoiding excessive local current density.

[0006] As a preferred embodiment of the above technical solution, the beveled block, the upper frame and the electrode are integrally formed, which eliminates connection gaps and welding defects, improves the overall structural strength, and avoids potential difference corrosion between different components.

[0007] As a preferred embodiment of the above technical solution, the other end of the mesh rib is provided with a lower frame, and the length and thickness of the lower frame are the same as those of the upper frame, which ensures the symmetry and stability of the overall structure of the grating and reduces deformation caused by uneven stress.

[0008] As a preferred embodiment of the above technical solution, the width ratio between the lower frame and the upper frame is in the range of 9:30-9:25, which can ensure that the upper frame provides sufficient support strength for the tab, and balance the current conduction efficiency and material utilization of the grid through the reasonable width of the lower frame.

[0009] The beneficial effects of this utility model are as follows: 1. The beveled blocks increase the connection area between the tabs and the top frame, dispersing the concentrated stress at the connection point to a larger area, effectively preventing the generation of microcracks and improving the fatigue resistance of the grid. Combined with the double arc chamfer design, it is more conducive to the conduction of electricity. The smooth transition of the arc chamfer reduces abrupt changes in the current conduction process, lowers the local current density, slows down the corrosion rate of the grid, and the beveled blocks can improve the conductivity of the grid, making the battery more efficient in charging and discharging cycles. 2. The bottom border can improve the strength of the grid ribs to enhance the stability of the grid structure, thereby improving the grid's corrosion resistance and battery cycle durability. At the same time, the bottom border also facilitates the convergence and conduction of current on the grid, enhancing the battery's high-current discharge performance and charge acceptance performance. Attached Figure Description

[0010] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment.

[0011] In the diagram: 10, mesh reinforcement; 20, top border; 21, beveled block; 30, tab; 40, bottom border. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the present utility model embodiments clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings.

[0013] Example Figure 1 In a long-life battery grid, there is a grid rib 10 and a tab 30. One end of the grid rib 10 is provided with an upper frame 20 that is fixedly connected to the tab 30. A chamfered block 21 is provided at the connection between one side of the tab 30 and the upper frame 20. The tab 30 and the chamfered block 21, and the other side of the tab 30 and the upper frame 20 are both provided with arc-shaped chamfers.

[0014] The angle between the beveled block 21 and the upper frame 20 is in the range of 2-8°.

[0015] The beveled block 21, the upper frame 20, and the tab 30 are integrally formed.

[0016] The beveled block 21 increases the connection area between the tab 30 and the upper frame 20, dispersing the concentrated stress at the connection between the tab 30 and the upper frame 20 to a larger area, effectively preventing the generation of microcracks and improving the fatigue resistance of the grid. Combined with the double arc chamfer design, it is more conducive to the conduction of electricity. The smooth transition of the arc chamfer reduces abrupt changes in the current conduction process, lowers the local current density, slows down the corrosion rate of the grid, and the beveled block 21 can improve the conductivity of the grid, making the battery more efficient in charging and discharging cycles.

[0017] Figure 1 In the middle, the other end of the mesh rib 10 is provided with a lower border 40, and the lower border 40 and the upper border 20 have the same length and thickness.

[0018] The width ratio between the bottom border 40 and the top border 20 is in the range of 9:30-9:25.

[0019] The lower border 40 can improve the strength of the grid ribs 10 to enhance the stability of the grid structure, thereby improving the grid's corrosion resistance and battery cycle durability. At the same time, the lower border 40 also facilitates the convergence and conduction of current on the grid, enhancing the battery's high-current discharge performance and charge acceptance performance.

[0020] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A long-life battery grid, characterized in that, include: The mesh rib (10) and the electrode lug (30) are provided. One end of the mesh rib (10) is provided with an upper frame (20) that is fixedly connected to the electrode lug (30). A chamfered block (21) is provided at the connection between one side of the electrode lug (30) and the upper frame (20). The electrode lug (30) and the chamfered block (21) and the other side of the electrode lug (30) and the upper frame (20) are both provided with arc-shaped chamfers.

2. The long-life battery grid according to claim 1, characterized in that, The angle between the beveled block (21) and the upper frame (20) is 2-8°.

3. A long-life battery grid according to claim 2, characterized in that, The beveled block (21), the upper frame (20), and the tab (30) are integrally formed.

4. A long-life battery grid according to claim 1, characterized in that, The other end of the mesh rib (10) is provided with a lower border (40), and the lower border (40) and the upper border (20) have the same length and thickness.

5. A long-life battery grid according to claim 4, characterized in that, The width ratio between the lower border (40) and the upper border (20) is in the range of 9:30-9:25.

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