Silver alloy positive grid for lead-acid storage battery

Abstract

The utility model provides a lead acid storage battery silver alloy positive plate grid, including fixed frame body and install the grid mesh in its interior, the grid mesh includes a plurality of groups of vertical grid bar and horizontal grid bar, the side of fixed frame body is fixedly connected with the connecting ear plate, the connecting ear plate is connected with the vertical grid bar and the horizontal grid bar. The vertical grid bars are arranged in the fixed frame body, one ends of the vertical grid bars are fixedly connected with the side edges with the connecting lug plates, a plurality of groups of first reinforcing ribs are arranged on the vertical grid bars, and the transverse grid bars are perpendicular to the vertical grid bars and are fixedly connected with the vertical grid bars. Compared with the traditional rod-shaped grid bar, the vertical grid bar with the tubular structure can effectively increase the surface area of the vertical grid bar on the basis of the same material consumption, so that the contact area with electrolyte is increased, the oxygen evolution rate is improved, and the chemical performance of the battery is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a silver alloy positive electrode grid for a lead-acid battery. Background Art

[0002] The plate is the main component of the battery. The common pasted plate is the most important and largest type of plate in lead-acid batteries. It is mainly composed of a conductor plate coated with active material. The function of the conductor grid is to support the active material and provide a path for electron conduction. The corrosion of the positive grid is an important factor affecting the service life of lead-acid batteries. In order to improve the corrosion resistance of the positive grid, it can be achieved by optimizing the alloy material. For example, adding Ag, Sn, Ba, Li and rare earth elements to the lead-calcium alloy can improve the physical and chemical properties of the positive grid to a certain extent.

[0003] However, in actual use experience, the high corrosion resistance of the silver alloy positive electrode grid may inhibit the oxygen evolution reaction and affect the electrochemical performance of the battery. Moreover, since Ag is a precious metal, the cost of the highly corrosion-resistant silver alloy positive electrode grid is high, making the battery less economical. Therefore, this application provides a silver alloy positive electrode grid for lead-acid batteries to meet the demand. Utility Model Content

[0004] The purpose of the utility model is to address the shortcomings of the existing technology and provide a silver alloy positive electrode grid for a lead-acid battery. By arranging vertical bars, the problem that the high corrosion resistance of the silver alloy positive electrode grid may inhibit the oxygen evolution reaction and affect the electrochemical performance of the battery is solved.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a silver alloy positive plate grid for a lead-acid battery, comprising a fixed frame and a grid installed inside the grid, the grid comprising multiple groups of vertical bars and transverse bars, the side of the fixed frame is fixedly connected with a connecting ear plate, the vertical bars are arranged inside the fixed frame and one end is fixedly connected to the side with the connecting ear plate, multiple groups of first reinforcing ribs are provided on the vertical bars, and the transverse bars are perpendicular to the vertical bars and fixedly connected to them.

[0006] Preferably, the vertical bars are cylindrical cavity structures, and both ends of the vertical bars are fixedly connected and sealed to the inner side walls of the fixed frame.

[0007] Preferably, the side walls of the vertical bars are provided with a plurality of groups of first reinforcing ribs, and the first reinforcing ribs are arc-shaped protrusions.

[0008] Preferably, the thickness of the side walls of the vertical bars is uniform, and the thickness of the first reinforcing ribs is also consistent with the thickness of the vertical bars.

[0009] Preferably, the surface of the vertical bars is further provided with second reinforcing ribs, which are arranged between two adjacent groups of first reinforcing ribs and adhere to the surface of the vertical bars, and four groups of second reinforcing ribs surround the vertical bars to form a closed loop.

[0010] Preferably, a certain angle is formed between the closed-loop plane formed by the four groups of the second reinforcing ribs and the cross section of the vertical bars, and the angle is less than ninety degrees.

[0011] Preferably, the vertical bars are arc-shaped groove structures.

[0012] Preferably, the vertical bars are made of silver alloy material.

[0013] Preferably, the fixed frame is also a circular tubular hollow structure, and the fixed frame and the vertical bars are made of the same material.

[0014] Preferably, the fixed frame is fixedly connected to the vertical bars and is internally communicated with them.

[0015] The beneficial effects of the present invention are:

[0016] (1) By setting up vertical bars, the vertical bars with a tubular structure can effectively increase the surface area of ​​the vertical bars compared to traditional rod-shaped bars based on the same material usage, thereby increasing the contact area with the electrolyte, increasing the oxygen evolution rate, and effectively improving the chemical performance of the battery.

[0017] (2) By setting the first reinforcing rib, the structural strength of the vertical bars is effectively enhanced, and the deformation resistance of the vertical bars is improved, thereby appropriately reducing the proportion of Ag added to the material, thereby achieving the purpose of reducing costs and improving battery economy.

[0018] In summary, the utility model has the advantages of increasing the contact area with the electrolyte and improving the oxygen evolution speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 Schematic diagram of a grid structure consisting of vertical bars and horizontal bars;

[0021] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 4 It is a schematic diagram of a partially enlarged three-dimensional structure of vertical bars.

[0023] In the figure: 1. fixed frame; 2. vertical bars; 3. horizontal bars; 4. first reinforcing rib; 5. second reinforcing rib. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0027] Example 1

[0028] like Figure 1-4 As shown, this embodiment provides a silver alloy positive plate grid for a lead-acid battery, comprising a fixed frame 1 and a grid installed inside the frame, the grid comprising multiple groups of vertical bars 2 and transverse bars 3, the side of the fixed frame 1 is fixedly connected with a connecting ear plate, the vertical bars 2 are arranged inside the fixed frame 1 and one end is fixedly connected to the side with the connecting ear plate, multiple groups of first reinforcing ribs 4 are provided on the vertical bars 2, which are used to enhance the structural strength of the vertical bars 2 and improve the bending resistance of the vertical bars 2, thereby resisting deformation caused by external pressure, the transverse bars 3 are perpendicular to the vertical bars 2 and fixedly connected thereto, by arranging the vertical bars 2, the vertical bars 2 with a tubular structure can effectively increase the surface area of ​​the vertical bars 2 on the basis of the same material usage, compared with traditional rod-shaped bars, thereby increasing the contact area with the electrolyte, improving the oxygen evolution rate, and effectively improving the chemical properties of the battery.

[0029] like Figure 2 and Figure 3 As shown, the vertical bars 2 are of a cylindrical cavity structure, and both ends of the vertical bars 2 are fixedly connected and sealed to the inner wall of the fixed frame 1 respectively. Compared with the bars in the traditional plate grid, the vertical bars 2 of the cylindrical structure increase the contact area with the electrolyte, thereby increasing the oxygen evolution rate, effectively improving the chemical properties of the battery, and at the same time saving the use of materials, facilitating cost control and improving economy. The side walls of the vertical bars 2 are provided with multiple groups of first reinforcing ribs 4, and the first reinforcing ribs 4 are arc-shaped protrusions, which can effectively enhance the structural strength of the vertical bars 2, enhance the radial compressive resistance of the vertical bars 2, and avoid the vertical bars 2 from being bent. At the same time, it can also increase the contact area with the electrolyte to a certain extent, which is beneficial to increase the oxygen evolution rate and thus improve the chemical properties of the battery.

[0030] like Figures 2 to 4 As shown, the thickness of the side wall of the vertical grid bar 2 is uniform, and the thickness of the first reinforcing rib 4 is also consistent with the thickness of the vertical grid bar 2, which is beneficial to saving material use and reducing battery production costs. A second reinforcing rib 5 is also provided on the surface of the vertical grid bar 2. The second reinforcing rib 5 is provided between two adjacent groups of first reinforcing ribs 4 and fits on the surface of the vertical grid bar 2. Four groups of second reinforcing ribs 5 surround the vertical grid bar 2 to form a closed loop. By providing the second reinforcing rib 5, the structural strength of the vertical grid bar 2 can be further increased, the axial compressive strength of the vertical grid bar 2 can be improved, and the axial deformation resistance of the vertical grid bar 2 can be increased. A certain angle is formed between the closed-loop plane formed by the four groups of second reinforcing ribs 5 and the cross-section of the vertical grid bar 2, and the angle is less than ninety degrees. The inclined second reinforcing rib 5 can not only increase the axial compressive strength of the vertical grid bar 2, but also increase the radial compressive strength of the vertical grid bar 2 to a certain extent, thereby further improving the structural strength of the vertical grid bar 2.

[0031] Among them, the vertical bars 2 are arc-shaped groove structures, which can further increase the surface area of ​​the vertical bars 2, thereby increasing the contact area between the vertical bars 2 and the electrolyte, and improving the oxygen evolution rate. The vertical bars 2 are made of silver alloy material, and the fixed frame 1 is also a tubular cavity structure. The fixed frame 1 and the vertical bars 2 are made of the same material. The fixed frame 1 can also increase the contact area with the electrolyte. The fixed frame 1 is fixedly connected to the vertical bars 2 and is internally connected, and can generally be cast by a mold.

[0032] Working steps

[0033] When making the grid, a template can be used to cast the molten liquid silver alloy material into the template, and then the template is quickly cooled. The mold is then opened to take out the grid, and then the grid is installed inside the fixed frame 1 and fixedly connected to it to form a grid. The active material is then adhered to the grid. Due to the presence of the first reinforcing ribs 4 and the second reinforcing ribs 5, the contact area between the active material and the grid can be increased, thereby increasing the adhesion of the active material, making it difficult for the active material to fall off the grid. After the active material on the grid is dried and solidified, the production of the positive electrode grid is completed.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A silver alloy positive electrode grid for a lead-acid battery, comprising a fixed frame and a grid mounted therein, wherein the grid comprises a plurality of groups of vertical bars and transverse bars, characterized in that: The side of the fixed frame is fixedly connected to a connecting ear plate, the vertical bars are arranged inside the fixed frame and one end is fixedly connected to the side with the connecting ear plate, the vertical bars are provided with multiple groups of first reinforcing ribs, and the transverse bars are perpendicular to the vertical bars and fixedly connected thereto; The vertical bars are cylindrical cavity structures, and both ends of the vertical bars are fixedly connected and sealed to the inner side walls of the fixed frame.

2. The silver alloy positive electrode grid for a lead-acid battery according to claim 1, characterized in that: The side walls of the vertical bars are provided with a plurality of groups of first reinforcing ribs, and the first reinforcing ribs are arc-shaped protrusions.

3. The silver alloy positive electrode grid for a lead-acid battery according to claim 2, characterized in that: The thickness of the side walls of the vertical bars is uniform, and the thickness of the first reinforcing ribs is also consistent with the thickness of the vertical bars.

4. The silver alloy positive electrode grid for a lead-acid battery according to claim 3, characterized in that: The surface of the vertical bars is further provided with second reinforcing ribs, which are arranged between two adjacent groups of first reinforcing ribs and adhere to the surface of the vertical bars. Four groups of the second reinforcing ribs surround the vertical bars to form a closed loop.

5. The silver alloy positive electrode grid for a lead-acid battery according to claim 4, characterized in that: A certain angle is formed between the closed-loop plane formed by the four groups of the second reinforcing ribs and the cross section of the vertical bars, and the angle is less than ninety degrees.

6. The silver alloy positive electrode grid for a lead-acid battery according to claim 5, characterized in that: The vertical bars are arc-shaped groove structures.

7. The silver alloy positive electrode grid for a lead-acid battery according to claim 6, characterized in that: The vertical bars are made of silver alloy material.

8. The silver alloy positive electrode grid for a lead-acid battery according to claim 1, characterized in that: The fixed frame is also a circular tubular cavity structure, and the fixed frame and the vertical bars are made of the same material.

9. The silver alloy positive electrode grid for a lead-acid battery according to claim 8, characterized in that: The fixed frame is fixedly connected to the vertical bars and is internally communicated with them.

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