Pole group structure of high-magnification lead-acid storage battery

Abstract

The utility model provides a high-magnification lead-acid storage battery plate group structure, and belongs to the technical field of storage batteries. The structure comprises a parting strip, the parting strip comprises paired positioning strips, convex points, blind holes, convex edges and grooves, the convex points are arranged on the left side of one positioning strip, the blind holes are formed in the right side of the other positioning strip, the convex points and the blind holes are mutually inserted, the convex edges are arranged on the right side of one positioning strip and the left side of the other positioning strip, and the convex edges are arranged in the grooves. The protruding edges abut against the side ends of the partition plates, the left side of one positioning strip and the right side of the other positioning strip are each provided with a groove, the grooves located in the two positioning strips are oppositely combined to form a complete groove body, and the connecting part penetrates through the complete groove body. According to the utility model, the separating and positioning parts are constructed in the middle of the plate group structure, and the framework supporting effect is formed by utilizing the separating and positioning parts, and the positioning stability of the separator is ensured. According to the utility model, the high-density stacking structure of the polar plate is fully enhanced, and the polar plate is particularly suitable for a high-magnification lead-acid storage battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a high-rate lead-acid battery electrode group structure. Background Technology

[0002] High-rate lead-acid batteries exhibit higher energy density under high-current discharge conditions compared to ordinary lead-acid batteries. This is primarily achieved through improvements in the grid, plates, electrode groups, separators, and lead paste formulation. Lead paste and its coating process are among the core technologies. By introducing additives and optimizing the composition ratio, the composition and structure of the lead paste are improved, increasing its strength and enhancing the adhesion between the grid and the lead paste, thus reducing contact resistance. Controlling the apparent density and acid content of the lead paste increases its porosity and specific surface area, expanding the interface between the active material and the electrolyte, thereby improving the battery's high-rate discharge performance and lifespan. While continuous improvements in lead paste strength and adhesion enhance battery energy density, they also place higher demands on the assembly structure of the electrode plates.

[0003] A battery electrode group is a component consisting of positive and negative plates, typically composed of positive and negative plates and separators. In lead-acid batteries, the electrode group is one of the basic building blocks. The active material of the positive plate is lead dioxide, while the active material of the negative plate is spongy lead. To achieve a larger battery capacity, multiple positive and negative plates are often connected in parallel to form positive and negative plate groups. During installation, the positive and negative plate groups are interlocked, separated by separators, to form a single cell. To maximize energy density, high-rate lead-acid batteries typically require a more compact assembly structure for their electrode groups. However, current conventional electrode group structures struggle to further increase stacking density, and the stability of the electrode group structure is often difficult to guarantee under high-density stacking conditions. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to fully guarantee the stability of the pole group structure in a high-density stacked state.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0006] A high-rate lead-acid battery electrode structure includes a negative electrode plate, a separator, a positive electrode plate, and tabs. The negative electrode plate and the positive electrode plate are separated by the separator and stacked on top of each other. Tabs are provided on both the negative and positive electrode plates. Each negative and positive electrode plate is divided into an upper part and a lower part, with a connecting part between the upper and lower parts. The structure also includes spacers, each spacer comprising a pair of positioning strips, protrusions, blind holes, raised ridges, and grooves. A protrusion is provided on the left side of one positioning strip, and a blind hole is provided on the right side of the other positioning strip. The protrusions and blind holes interlock. Raised ridges are provided on the right side of one positioning strip and the left side of the other positioning strip, pressing against the side end of the separator. Grooves are provided on the left side of one positioning strip and the right side of the other positioning strip. The grooves on the two positioning strips interlock to form a complete groove, and the connecting part penetrates the complete groove.

[0007] Preferably, the protrusions are cylindrical in shape, and the blind holes are cylindrical blind holes.

[0008] Preferably, the groove is a rectangular groove.

[0009] Preferably, a linear groove is provided on the side end of the partition, and the protruding ridge is embedded in the linear groove.

[0010] Preferably, a number of grooves and a number of blind holes are arranged at equal intervals on one of the positioning strips.

[0011] Preferably, a number of grooves and a number of protrusions on another positioning strip are arranged at equal intervals.

[0012] In the above technical solution, the negative electrode plate, the separator, and the positive electrode plate are stacked in sequence to form the basic structure of the electrode group, and the electrode tab is an existing structure of the electrode plate. In this utility model, the electrode plate is divided into an upper part and a lower part, which are connected to form an integral whole. The gap between the two parts is used to construct a separation and positioning component (i.e., a spacer). The spacer consists of a pair of positioning strips. The inner side of the two positioning strips is provided with a protrusion and a blind hole, and the two are inserted into each other to form an integral whole. In the vertical direction, it plays a role in spacing and positioning. In the horizontal direction, the protrusion on the outside of the positioning strip presses against the separator, which plays a role in supporting the skeleton in the middle of the electrode group, while ensuring the stability of the separator positioning. The groove is used to accommodate the connecting part.

[0013] This invention provides a high-rate lead-acid battery electrode group structure. The technical solution incorporates separator and positioning components in the middle of the electrode group structure, which form a supporting framework while ensuring the stability of the separator positioning. This invention significantly strengthens the high-density stacked structure of the electrode plates, making it particularly suitable for high-rate lead-acid batteries. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 This is the right view of the present invention;

[0016] Figure 3 This is a magnified view of position A;

[0017] Figure 4 It is a 3D view of the two positioning strips and the connecting part before assembly;

[0018] Figure 5 This is the first 3D view of the two positioning strips before assembly;

[0019] Figure 6 This is the second 3D view of the two positioning strips before assembly;

[0020] In the picture:

[0021] Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] A high-rate lead-acid battery electrode structure, such as Figures 1-6 As shown, it includes a negative electrode plate 1, a separator 2, a positive electrode plate 3, and electrode tabs 6. The negative electrode plate 1 and the positive electrode plate 3 are separated by the separator 2 and stacked on top of each other. Electrode tabs 6 are provided on the negative electrode plate 1 and the positive electrode plate 3. The negative electrode plate 1 and the positive electrode plate 3 are each divided into an upper part 4 and a lower part 5, and a connecting part 7 is provided between the upper part 4 and the lower part 5. It also includes a spacer 8, which includes a pair of positioning strips 9, protrusions 10, blind holes 11, protruding ridges 12, and grooves 13. A spacer is provided on the left side of one of the positioning strips 9. There is a protrusion 10, and a blind hole 11 is provided on the right side of another positioning strip 9. The protrusion 10 and the blind hole 11 are interlocked. There is a protruding ridge 12 on the right side of one of the positioning strips 9 and the left side of the other positioning strip 9. The protruding ridge 12 presses against the side end of the partition plate 2. There is a groove 13 on the left side of one of the positioning strips 9 and the right side of the other positioning strip 9. The grooves 13 on the two positioning strips 9 are interlocked to form a complete groove. The connecting part 7 passes through the complete groove.

[0025] In the above technical solution, the negative electrode plate 1, the separator 2, and the positive electrode plate 3 are stacked in sequence to form the basic structure of the electrode group. The electrode lug 6 is an existing structure of the electrode plate. In this utility model, the electrode plate is divided into two parts: the upper part 4 and the lower part 5. The two parts are connected by the connecting part 7 to form an integral whole. The gap between the two parts is used to construct a separation and positioning component (i.e., the spacer 8). The spacer 8 is composed of two pairs of positioning strips 9. The inner sides of the two positioning strips 9 are respectively provided with protrusions 10 and blind holes 11. The two parts are inserted into each other to form an integral whole. In the vertical direction, it plays a role in spacing and positioning. In the horizontal direction, the protruding ridge 12 located on the outside of the positioning strip 9 presses against the separator 2, which plays a role in supporting the skeleton in the middle of the electrode group, and at the same time ensures the stability of the positioning of the separator 2. The groove 13 is used to accommodate the connecting part 7.

[0026] Example 2

[0027] A high-rate lead-acid battery electrode structure, such as Figures 1-6 As shown, it includes a negative electrode plate 1, a separator 2, a positive electrode plate 3, and electrode tabs 6. The negative electrode plate 1 and the positive electrode plate 3 are separated by the separator 2 and stacked on top of each other. Electrode tabs 6 are provided on the negative electrode plate 1 and the positive electrode plate 3. The negative electrode plate 1 and the positive electrode plate 3 are each divided into an upper part 4 and a lower part 5, and a connecting part 7 is provided between the upper part 4 and the lower part 5. It also includes a spacer 8, which includes a pair of positioning strips 9, protrusions 10, blind holes 11, protruding ridges 12, and grooves 13. A spacer is provided on the left side of one of the positioning strips 9. The partition 2 has a raised dot 10 and a blind hole 11 on the right side of another positioning strip 9. The raised dot 10 and the blind hole 11 interlock. Both the right side and the left side of one positioning strip 9 have raised ridges 12, which press against the side end of the partition 2. Both the left side and the right side of one positioning strip 9 have grooves 13, which interlock to form a complete groove. The connecting part 7 passes through the complete groove. The raised dot 10 is cylindrical, and the blind hole 11 is cylindrical. The groove 13 is rectangular. A linear groove is provided on the side end of the partition 2, and the raised ridge 12 is embedded in the linear groove. Several grooves 13 and several blind holes 11 are equally spaced on one positioning strip 9. Several grooves 13 and several raised dots 10 are equally spaced on the other positioning strip 9.

[0028] 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 high-rate lead-acid battery electrode group structure, comprising a negative electrode plate (1), a separator (2), a positive electrode plate (3), and tabs (6), wherein, The negative electrode plate (1) and the positive electrode plate (3) are separated by a partition plate (2) and stacked on top of each other. A tab (6) is provided on both the negative electrode plate (1) and the positive electrode plate (3). The negative electrode plate (1) and the positive electrode plate (3) are each divided into an upper part (4) and a lower part (5), with a connecting part (7) between the upper part (4) and the lower part (5). The plate also includes a spacer (8), which includes a pair of positioning strips (9), a protrusion (10), a blind hole (11), a raised ridge (12), and a groove (13). A protrusion (10) is provided on the left side of one of the positioning strips (9). 0), a blind hole (11) is provided on the right side of another positioning strip (9), the protrusion (10) and the blind hole (11) are inserted into each other, a protruding ridge (12) is provided on the right side of one of the positioning strips (9) and the left side of the other positioning strip (9), the protruding ridge (12) presses against the side end of the partition plate (2), a groove (13) is provided on the left side of one of the positioning strips (9) and the right side of the other positioning strip (9), the grooves (13) on the two positioning strips (9) are aligned to form a complete groove, and the connecting part (7) passes through the complete groove.

2. The electrode group structure of a high-rate lead-acid battery according to claim 1, characterized in that, The protrusion (10) is cylindrical in shape, and the blind hole (11) is a cylindrical blind hole.

3. The electrode group structure of a high-rate lead-acid battery according to claim 1, characterized in that, The groove (13) is a rectangular groove.

4. The electrode group structure of a high-rate lead-acid battery according to claim 1, characterized in that, A linear groove is provided on the side end of the partition (2), and a protruding ridge (12) is embedded in the linear groove.

5. The electrode group structure of a high-rate lead-acid battery according to claim 1, characterized in that, Several grooves (13) and several blind holes (11) located on one of the positioning strips (9) are arranged at equal intervals.

6. The electrode group structure of a high-rate lead-acid battery according to claim 5, characterized in that, Several grooves (13) and several protrusions (10) located on another positioning strip (9) are arranged at equal intervals.

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