Wide tab grid of high-rate battery

Abstract

The utility model provides a wide-tab grid for a high-rate battery, and belongs to the technical field of storage batteries. According to the structure, at least one transverse bar is arranged in a frame body of a grid frame unit, a plurality of longitudinal bars are arranged in the frame body, and the transverse bar is perpendicular to and penetrates through the longitudinal bars; transverse connecting necks are connected between the transversely adjacent grid frame units, transverse connecting necks are also connected to the grid frame units located on the transverse edges, longitudinally extending frames are connected between the transverse connecting necks located on the edges, tabs are connected to the outer edges of the frames, and paired longitudinal connecting necks are connected between the longitudinally adjacent grid frame units. And a slit is formed between the pair of longitudinal connecting necks. According to the utility model, the supporting structure of the grid is improved, and the frame is additionally arranged to play a role in external protection, and is used for bearing the tabs, so that the design requirement of a high-rate battery on the wide-tab grid can be met. The utility model has the advantages of reasonable structure and more reliable structural strength.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a wide tab grid for a high-rate battery. Background Technology

[0002] The grid is a major component of a lead-acid battery, serving as the current-collecting framework of the electrodes. It conducts and collects current, ensuring a uniform current distribution, and also supports the active materials, acting as their carrier. During charging and discharging, the composition of the active materials changes. Specifically, the volume of the active materials differs before and after the transformation. During discharge, the positive electrode active material PbO2 and the negative electrode active material Pb react with the electrolyte to form PbSO4, increasing its molar volume and causing the plates to expand and deform. During charging, the PbSO4 on the negative electrode is reduced to Pb, and the PbSO4 on the positive electrode is oxidized to PbO2, decreasing its molar volume and causing the plates to shrink. Therefore, the grid's support prevents the active materials from shedding due to expansion and contraction.

[0003] Lead alloys used for solar cell grids should possess certain mechanical properties (such as hardness, tensile strength, elongation, etc.), corrosion resistance, electrical conductivity, excellent casting properties, and weldability. Common grid alloys include lead-calcium alloys, lead-tin alloys, lead-calcium-tin alloys, pure lead alloys, and lead-low antimony alloys, etc. Different elements in the alloy play different roles; the most commonly used materials are lead-calcium-tin alloys and lead-low antimony alloys. There are two main manufacturing processes for solar cell grids: stretching and casting. Stretched grids are made by punching rectangular holes in a lead strip of a certain width on a punch press and then stretching it into shape. This type of grid has a simple manufacturing process but is relatively thin and lightweight with lower structural strength. Casting involves pouring molten lead alloy into a grid mold under gravity and then cooling it to form the final shape; this is currently the mainstream process.

[0004] High-rate lead-acid batteries, compared to ordinary lead-acid batteries, have a higher energy density and are more suitable for high-current discharge scenarios, typically having a discharge current several times that of ordinary lead-acid batteries. Therefore, the current carrying capacity of the grid and tabs should be considered accordingly, with increased grid width and tab span. In existing technology, a typical structure of a conventional grid is as follows... Figure 1 As shown, its structural strength is not high. In particular, after increasing the distance between the electrodes, the stability of the central support is reduced, which leads to deformation and even leakage from time to time. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: how to design a lead-acid battery grid that has both a large width and good structural strength.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0007] A high-rate battery wide-tab grid includes a grid frame unit, a horizontal connecting neck, a frame, tabs, a vertical connecting neck, and a slit. The grid frame unit includes a frame body, horizontal ribs, and vertical ribs. The frame body has at least one horizontal rib and several vertical ribs, with the horizontal ribs perpendicular to and penetrating the vertical ribs. Horizontal connecting necks connect horizontally adjacent grid frame units, and horizontal connecting necks are also connected to grid frame units located at horizontal edges. A longitudinally extending frame is connected between the horizontal connecting necks located at the edges. Tabs are connected to the outer edge of the frame. Pairs of vertically adjacent grid frame units are connected, and a slit is present between the pairs of vertical connecting necks.

[0008] As a preferred option, several longitudinal ribs are arranged at different heights inside the grid unit.

[0009] Preferably, the grid unit has a groove at the bottom.

[0010] Preferably, the edges of the grid unit and the edge of the border are rounded.

[0011] Preferably, a longitudinal connecting neck is also connected to the grid unit located at the longitudinal edge, and a laterally extending outer frame is connected between the longitudinal connecting necks located at the edge and the longitudinal connecting necks.

[0012] In the above technical solution, the grid frame unit is the unit body of the internal structure of the grid, which constitutes the main structure of the grid. Inside the grid frame unit, the frame body serves as the external support, with at least one horizontal rib and several vertical ribs forming a mesh structure. Horizontally adjacent grid frame units have horizontal connecting necks, creating gaps between them. Simultaneously, longitudinally adjacent grid frame units have paired longitudinal connecting necks, forming slits. These slits and the aforementioned gaps form connecting channels between the upper and lower spaces of the grid. A frame is provided on the horizontal connecting necks at the edges, serving both as external support and providing a relatively stable load-bearing structure for the tabs. Furthermore, the vertical ribs can be arranged in a staggered pattern to prevent deformation of the supporting structure if it is located on the same plane. A groove can also be provided at the bottom of the grid frame unit for easy installation and positioning.

[0013] This invention provides a wide-tab grid for high-rate batteries. The technical solution improves the grid's support structure and adds a frame for external protection, which also supports the tabs, thus meeting the design requirements of high-rate batteries for wide-tab grids. This invention has a reasonable structure and more reliable structural strength. Attached Figure Description

[0014] Figure 1 This is a typical structural diagram of a conventional plate grid;

[0015] Figure 2 This is a structural diagram of the present invention;

[0016] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0017] Figure 4 This is a cross-sectional view of a further improved embodiment of this utility model;

[0018] In the picture:

[0019] Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below. To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative descriptions, indicating that a certain degree of variation in quantity is permissible without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which this utility model pertains.

[0021] Example 1

[0022] A high-rate battery with wide tab grid, such as Figures 2-4 As shown, it includes a grid frame unit 1, a horizontal connecting neck 2, a side frame 3, a tab 4, a vertical connecting neck 5, and a slit 6; wherein, the grid frame unit 1 includes a frame body 101, a horizontal rib 102, and a vertical rib 103, with at least one horizontal rib 102 inside the frame body 101, and several vertical ribs 103 inside the frame body 101, the horizontal rib 102 being perpendicular to and penetrating the several vertical ribs 103; a horizontal connecting neck 2 is connected between horizontally adjacent grid frame units 1, and a horizontal connecting neck 2 is also connected to the grid frame unit 1 located at the horizontal edge, a vertically extending side frame 3 is connected between the horizontal connecting neck 2 located at the edge and the horizontal connecting neck 2, a tab 4 is connected to the outer edge of the side frame 3, a pair of vertical connecting necks 5 are connected between vertically adjacent grid frame units 1, and a slit 6 is provided between the pair of vertical connecting necks 5.

[0023] The grid frame unit 1 is the internal structure of the grid, forming the main structure of the grid. Inside the grid frame unit 1, the frame 101 serves as the external support, with at least one horizontal rib 102 and several vertical ribs 103 forming a mesh structure. Horizontal adjacent grid frame units 1 have horizontal connecting necks 2, creating gaps between them. Simultaneously, vertically adjacent grid frame units 1 have paired vertical connecting necks 5, forming slits 6. The slits 6 and the aforementioned gaps form connecting channels between the upper and lower spaces of the grid. A frame 3 is provided on the horizontal connecting necks 2 at the edge, serving both as external support and providing a relatively stable load-bearing structure for the tabs 4. Furthermore, the vertical ribs 103 can be arranged in a staggered pattern to prevent deformation of the support structure if it is located on the same plane. A groove 7 can also be provided at the bottom of the grid frame unit 1 for easy installation and positioning.

[0024] Example 2

[0025] A high-rate battery with wide tab grid, such as Figures 2-4 As shown, the enclosure includes a frame unit 1, a horizontal connecting neck 2, a side frame 3, a tab 4, a vertical connecting neck 5, and a slit 6. The frame unit 1 includes a frame body 101, horizontal ribs 102, and vertical ribs 103. At least one horizontal rib 102 is located inside the frame body 101, and several vertical ribs 103 are located inside the frame body 101. The horizontal ribs 102 are perpendicular to and penetrate the several vertical ribs 103. Horizontal connecting necks 2 connect horizontally adjacent frame units 1, and horizontal connecting necks 2 are also connected to frame units 1 located at horizontal edges. A vertically extending side frame 3 connects between horizontal connecting necks 2 located at the edges, and tabs 4 are connected to the outer edge of the side frame 3. Pairs of vertical connecting necks 5 connect vertically adjacent frame units 1, and a slit 6 is located between the pairs of vertical connecting necks 5. Inside the frame unit 1, several vertical ribs 103 are arranged in an alternating pattern. A groove 7 is located at the bottom of the frame unit 1. The edges of the grid unit 1 and the edge of the border 3 are both rounded. A longitudinal connecting neck 5 is also connected to the grid unit 1 located at the longitudinal edge, and a laterally extending outer frame is connected between the longitudinal connecting neck 5 located at the edge and the longitudinal connecting neck 5.

[0026] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of this utility model application should be included within the protection scope of this utility model.

Claims

1. A wide-tab grid for a high-rate battery, characterized in that... It includes a grid frame unit (1), a horizontal connecting neck (2), a side frame (3), a pole lug (4), a vertical connecting neck (5), and a slit (6); wherein, the grid frame unit (1) includes a frame body (101), a horizontal rib (102), and a vertical rib (103), with at least one horizontal rib (102) inside the frame body (101), and several vertical ribs (103) inside the frame body (101), and the horizontal rib (102) is perpendicular to and passes through several vertical ribs (103); a horizontal connecting neck (2) is connected between horizontally adjacent grid frame units (1), and a horizontal connecting neck (2) is also connected on the grid frame unit (1) located at the horizontal edge, a vertically extending side frame (3) is connected between the horizontal connecting neck (2) located at the edge and the horizontal connecting neck (2), a pole lug (4) is connected to the outer edge of the side frame (3), a pair of vertical connecting necks (5) are connected between vertically adjacent grid frame units (1), and a slit (6) is provided between the pair of vertical connecting necks (5).

2. The wide tab grid of a high-rate battery according to claim 1, characterized in that, Inside the grid unit (1), several longitudinal ribs (103) are arranged in an alternating pattern.

3. The wide tab grid of a high-rate battery according to claim 1, characterized in that, The bottom of the grid unit (1) has a groove (7).

4. The wide tab grid of a high-rate battery according to claim 1, characterized in that, The edges of the grid unit (1) and the border (3) are both rounded.

5. A wide-tab grid for a high-rate battery according to claim 1, characterized in that, A longitudinal connecting neck (5) is also connected to the grid unit (1) located at the longitudinal edge, and a transversely extending outer frame is connected between the longitudinal connecting neck (5) located at the edge and the longitudinal connecting neck (5).

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