Grid framework structure of lead-acid storage battery

Abstract

The grid framework structure comprises an upper frame, a lower frame, a left frame, a right frame, plate lugs, thin vertical ribs, thin transverse ribs, thickened transverse ribs and thickened vertical ribs, the two ends of the upper frame are connected with the ends of the left frame and the right frame respectively, the two ends of the lower frame are also connected with the ends of the left frame and the right frame respectively, a rectangular frame is defined by the upper frame, the lower frame, the left frame and the right frame, and the plate lug is arranged on the upper frame. The number of the thickened transverse ribs and the number of the thickened vertical ribs are both two, the thickened transverse ribs are arranged between the left frame and the right frame, and the thickened vertical ribs are arranged between the upper frame and the lower frame. The thickened transverse ribs and the thickened vertical ribs divide the square frame into nine small frames, and a plurality of thin transverse ribs and thin vertical ribs are arranged on the inner walls of the nine small frames. According to the utility model, the consistency of the plate coating thickness of the large-plate-surface polar plate is improved, and the current conduction efficiency of the large-plate-surface polar plate is improved.

Description

Technical Field

[0001] The utility model relates to a grid skeleton structure, in particular to a grid skeleton structure capable of improving the thickness consistency of coated plates, and belongs to the technical field of storage batteries. Background Art

[0002] 2V large-density fixed-type valve-regulated sealed batteries, such as float charge backup power supplies, are often used in groups. IDC data center UPS systems are often equipped with 240 batteries per group as float charge backup power supplies. Lead-acid batteries used in groups have very high requirements for battery consistency. The consistency of plate thickness is a key factor affecting the consistency of VRLA batteries. Plate thickness directly affects the compression ratio of each single-cell group of VRLA batteries and the acid saturation of the separator. The capacity of a single plate in a large-density battery is mostly between 25 and 50 Ah, and the plate height can reach 200 to 250 mm. The larger the plate surface area, the more difficult it is to control the thickness consistency. Uncontrolled plate thickness will directly affect the product quality of the battery. The utility model provides a lead-acid battery grid skeleton structure to improve the thickness consistency of cast and coated plates, thereby improving battery consistency and thereby extending the service life of 2V valve-regulated sealed batteries used in groups. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a lead-acid battery grid skeleton structure, which can improve the thickness consistency of large plate panel grid casting plates and plate coating plates.

[0004] The problem described in the present invention is solved by the following technical solutions:

[0005] A lead-acid battery grid skeleton structure comprises an upper frame, a lower frame, a left frame, a right frame, plate ears, thin vertical ribs, thin horizontal ribs, thick horizontal ribs and thick vertical ribs; the two ends of the upper frame are respectively connected to the ends of the left frame and the right frame, and the two ends of the lower frame are also respectively connected to the ends of the left frame and the right frame, the upper frame, the lower frame, the left frame and the right frame form a rectangular frame, and the plate ears are arranged on the upper frame; the number of the thick horizontal ribs and the thick vertical ribs are both two, the thick horizontal ribs are arranged between the left frame and the right frame, and the thick vertical ribs are arranged between the upper frame and the lower frame; the center line of the thick vertical ribs is parallel to the center line of the left frame, and the center line of the thick horizontal ribs is parallel to the center line of the upper frame; the thick horizontal ribs and the thick vertical ribs divide the square frame surrounded by the upper frame, the lower frame, the left frame and the right frame into nine small frames, and a plurality of thin horizontal ribs and thin vertical ribs are arranged on the inner walls of the nine small frames.

[0006] In the above lead-acid battery grid skeleton structure, the distance between the thin transverse rib closest to the upper frame and the upper frame is less than L1, and the distance between the thin transverse rib closest to the lower frame and the lower frame is less than L1.

[0007] The above-mentioned lead-acid battery grid skeleton structure, the spacing between the fine transverse ribs between the upper frame and the upper thickened transverse ribs is L1, the spacing between the upper thickened transverse ribs and the fine transverse ribs directly above them is L1, and the numerical range of L1 is within 10mm-13mm; the spacing between the fine transverse ribs between the upper thickened transverse ribs and the lower thickened transverse ribs is L2, the spacing between the upper thickened transverse ribs and the fine transverse ribs directly below them is L2, and the spacing between the lower thickened transverse ribs and the fine transverse ribs directly above them is L2; the spacing between the fine transverse ribs between the lower thickened transverse ribs and the lower frame is L3, and the spacing between the lower thickened transverse ribs and the fine transverse ribs directly below them is L3.

[0008] In the above-mentioned lead-acid battery grid skeleton structure, the value of L2 is a times that of L1, and the value range of a is within the range of 1.1-1.2; the value of L3 is b times that of L1, and the value range of b is within the range of 1.3-1.4.

[0009] In the above-mentioned lead-acid battery grid skeleton structure, the two thickened vertical ribs are symmetrically positioned about the connecting line between the center point of the upper frame and the center point of the lower frame.

[0010] In the above-mentioned lead-acid battery grid skeleton structure, the thickness of the upper frame, lower frame, left frame, right frame, thickened horizontal ribs and thickened vertical ribs are all the same D1; the thickness of the thin vertical ribs and thin horizontal ribs are all D2, and D2 is smaller than D1.

[0011] In the above lead-acid battery grid skeleton structure, the cross-sections of the upper frame, lower frame, left frame and right frame are all hexagonal.

[0012] In the above-mentioned lead-acid battery grid skeleton structure, the cross-sections of the thin vertical ribs, thin transverse ribs and thickened transverse ribs are all rhombus-shaped, and the tips of the rhombuses on both sides in the demoulding direction are provided with chamfers.

[0013] In the above-mentioned lead-acid battery grid skeleton structure, the cross-section of the thickened vertical ribs is hexagonal, and chamfers are provided on both side corners in the demoulding direction.

[0014] The utility model forms a skeleton structure of the grid through an upper frame, a left frame, a right frame, a lower frame, thick vertical ribs, thin vertical ribs, thick horizontal ribs and thin horizontal ribs; the special feature of the grid skeleton structure is that the large plate panel grid is divided into a combination of a plurality of small plate panel grids by the grid frame, a plurality of thick vertical ribs and thick horizontal ribs, which constitutes a plurality of support surfaces and support points with uniform thickness when coating the plates, greatly improving the consistency of the coating thickness of the large plate surface plates; the spacing between the horizontal ribs of the grid gradually increases from top to bottom, which is adapted to the current density decreasing from top to bottom with the plate ear as the center, and can improve the current conduction efficiency of the large plate surface plates; the good current collecting effect of the thick vertical ribs not only improves the utilization rate of the active material at the bottom of the large plate surface, but also the good corrosion resistance provides a guarantee for the ultra-long quality assurance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of the left and right frames of the present invention;

[0017] Figure 3 This is a schematic cross-sectional view of the thickened vertical ribs of the present invention;

[0018] Figure 4 It is a cross-sectional schematic diagram of the thin vertical ribs and thin horizontal ribs of the utility model;

[0019] Figure 5 It is a cross-sectional schematic diagram of the thickened transverse ribs of the present invention.

[0020] The list of numbers in the figure is: 1. Upper frame, 2. Lower frame, 3. Left frame, 4. Right frame, 5. Plate ear, 6. Thin vertical ribs, 7. Thin horizontal ribs, 8. Thick horizontal ribs, 9. Thick vertical ribs. DETAILED DESCRIPTION

[0021] See Figure 1 、 2 , 3, 4 and Figure 5 The utility model includes an upper frame 1, a lower frame 2, a left frame 3, a right frame 4, a plate ear 5, a thin vertical rib 6, a thin horizontal rib 7, a thick horizontal rib 8 and a thick vertical rib 9; the two ends of the upper frame 1 are respectively connected to the ends of the left frame 3 and the right frame 4, and the two ends of the lower frame 2 are also respectively connected to the ends of the left frame 3 and the right frame 4. The upper frame 1, the lower frame 2, the left frame 3 and the right frame 4 form a rectangular frame, and the plate ear 5 is arranged on the upper frame 1; the number of the thick horizontal rib 8 and the thick vertical rib 9 are both two, the thick horizontal rib 8 is arranged between the left frame 3 and the right frame 4, and the thick vertical rib 9 is arranged between the upper frame 1 and the lower frame 2; the center line of the thick vertical rib 9 is aligned with the center line of the left frame 3 The center lines are parallel, and the center line of the thickened horizontal ribs 8 is parallel to the center line of the upper frame 1; the thickened horizontal ribs 8 and thickened vertical ribs 9 divide the square frame surrounded by the upper frame 1, the lower frame 2, the left frame 3 and the right frame 4 into nine small frames, and the inner walls of the nine small frames are provided with multiple fine horizontal ribs 7 and fine vertical ribs 6; the existing large frame structure is changed into a structure of each small frame, which makes it easier to form multiple support surfaces and support points with consistent thickness when coating the grid, greatly improving the consistency of the coating thickness of the large plate surface plate; the grid is provided with a number of thickened vertical ribs connecting the upper and lower frames, which is more conducive to the rapid conduction of current at the bottom of the plate. At the same time, the thickened vertical and horizontal ribs improve the corrosion resistance of the grid and can extend the battery life.

[0022] The distance between the thin horizontal rib 7 closest to the upper frame 1 and the upper frame 1 is less than L1, and the distance between the thin horizontal rib 7 closest to the lower frame 2 and the lower frame 2 is less than L1; since the parts close to the upper and lower frames are susceptible to vibration during subsequent processing such as panel separation, the horizontal ribs need to be closer to the upper and lower frames to facilitate firm bonding between the active material and the grid.

[0023] The spacing between the thin transverse ribs 7 between the upper frame 1 and the upper thick transverse ribs 8 is L1, and the spacing between the upper thick transverse ribs 8 and the thin transverse ribs 7 directly above them is L1, and the value range of L1 is within 10mm-13mm; the spacing between the thin transverse ribs 7 between the upper thick transverse ribs 8 and the lower thick transverse ribs 8 is L2, the spacing between the upper thick transverse ribs 8 and the thin transverse ribs 7 directly below them is L2, and the spacing between the lower thick transverse ribs 8 and the thin transverse ribs 7 directly above them is L2; The spacing between the thin transverse ribs 7 between the lower thickened transverse ribs 8 and the lower frame 2 is L3, and the spacing between the lower thickened transverse ribs 8 and the thin transverse ribs 7 directly below it is L3; the thin transverse ribs are divided into three parts with the thickened transverse ribs 8 as the boundary, and the spacing between them gradually increases from top to bottom; the current density gradually decreases with the plate ear as the center, and the spacing between the grid transverse ribs gradually increases from top to bottom, which is consistent with the current density decreasing from top to bottom with the plate ear as the center, and can improve the current conduction efficiency of large-plate-surface plates.

[0024] The value of L2 is a times that of L1, and the value range of a is 1.1-1.2; the value of L3 is b times that of L1, and the value range of b is 1.3-1.4.

[0025] The two thickened vertical ribs 9 are symmetrically positioned about a connecting line between the center point of the upper frame 1 and the center point of the lower frame 2 .

[0026] The thickness of the upper frame 1, lower frame 2, left frame 3, right frame 4, thick horizontal ribs 8 and thick vertical ribs 9 are all the same D1; the thickness of the thin vertical ribs 6 and thin horizontal ribs 7 are all D2, and D2 is smaller than D1.

[0027] The cross-sections of the upper frame 1, the lower frame 2, the left frame 3, and the right frame 4 are all hexagonal; the inclined corners of the frames and various ribs enable the active substances to adhere better and more firmly; since the grid frame in this new type is cast, the inclined corners and chamfered structures are conducive to demolding the cast grid, reducing stress, increasing the amount of active substance paste and better adhesion.

[0028] The cross sections of the thin vertical ribs 6 , the thin transverse ribs 7 and the thickened transverse ribs 8 are all rhombus-shaped, and the tips on both sides of the rhombus are chamfered.

[0029] The cross section of the thickened vertical rib 9 is hexagonal, and the corners on both sides thereof are chamfered.

Claims

1. A lead-acid battery grid skeleton structure, characterized by: The invention comprises an upper frame (1), a lower frame (2), a left frame (3), a right frame (4), a plate ear (5), a thin vertical rib (6), a thin horizontal rib (7), a thick horizontal rib (8) and a thick vertical rib (9); the two ends of the upper frame (1) are respectively connected to the ends of the left frame (3) and the right frame (4); the two ends of the lower frame (2) are also respectively connected to the ends of the left frame (3) and the right frame (4); the upper frame (1), the lower frame (2), the left frame (3) and the right frame (4) form a rectangular frame; the plate ear (5) is arranged on the upper frame (1); the thick horizontal rib (8) and the thick vertical rib (9) are ...) The number of thickened horizontal ribs (8) is two, the thickened horizontal ribs (8) are arranged between the left frame (3) and the right frame (4), and the thickened vertical ribs (9) are arranged between the upper frame (1) and the lower frame (2); the center line of the thickened vertical ribs (9) is parallel to the center line of the left frame (3), and the center line of the thickened horizontal ribs (8) is parallel to the center line of the upper frame (1); the thickened horizontal ribs (8) and the thickened vertical ribs (9) divide the square frame surrounded by the upper frame (1), the lower frame (2), the left frame (3) and the right frame (4) into nine small frames, and a plurality of thin horizontal ribs (7) and thin vertical ribs (6) are arranged on the inner walls of the nine small frames.

2. The lead-acid battery grid skeleton structure according to claim 1, characterized in that: The distance between the thin transverse rib (7) closest to the upper frame (1) and the upper frame (1) is less than L1, and the distance between the thin transverse rib (7) closest to the lower frame (2) and the lower frame (2) is less than L1.

3. The lead-acid battery grid skeleton structure according to claim 2, characterized in that: The spacing between the thin transverse ribs (7) between the upper frame (1) and the upper thickened transverse ribs (8) is L1, and the spacing between the upper thickened transverse ribs (8) and the thin transverse ribs (7) directly above them is L1, and the value range of L1 is within 10mm-13mm; the spacing between the thin transverse ribs (7) between the upper thickened transverse ribs (8) and the lower thickened transverse ribs (8) is L2, and the spacing between the upper thickened transverse ribs (8) and the thin transverse ribs (7) directly below them is L2, and the spacing between the lower thickened transverse ribs (8) and the thin transverse ribs (7) directly above them is L2; the spacing between the thin transverse ribs (7) between the lower thickened transverse ribs (8) and the lower frame (2) is L3, and the spacing between the lower thickened transverse ribs (8) and the thin transverse ribs (7) directly below them is L3.

4. The lead-acid battery grid skeleton structure according to claim 3, characterized in that: The value of L2 is a times that of L1, and the value range of a is 1.1-1.2; the value of L3 is b times that of L1, and the value range of b is 1.3-1.

4.

5. The lead-acid battery grid skeleton structure according to claim 4, characterized in that: The two thickened vertical ribs (9) are symmetrically positioned about a connecting line between the center point of the upper frame (1) and the center point of the lower frame (2).

6. The lead-acid battery grid skeleton structure according to claim 5, characterized in that: The thicknesses of the upper frame (1), the lower frame (2), the left frame (3), the right frame (4), the thickened horizontal ribs (8) and the thickened vertical ribs (9) are all D1; the thicknesses of the thin vertical ribs (6) and the thin horizontal ribs (7) are all D2, and D2 is smaller than D1.

7. The lead-acid battery grid skeleton structure according to claim 6, characterized in that: The cross-sections of the upper frame (1), the lower frame (2), the left frame (3), and the right frame (4) are all hexagonal.

8. The lead-acid battery grid skeleton structure according to claim 7, characterized in that: The cross-sections of the thin vertical ribs (6), thin transverse ribs (7) and thickened transverse ribs (8) are all rhombus-shaped, and the tips of the rhombuses on both sides in the demoulding direction are both provided with chamfers.

9. The lead-acid battery grid skeleton structure according to claim 8, characterized in that: The cross section of the thickened vertical rib (9) is hexagonal, and both side corners in the demoulding direction are provided with chamfers.

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