Connecting structure for acid pot and middle cover of lead storage battery

Abstract

The utility model discloses a connecting structure of an acid pot and a middle cover of a lead storage battery. According to the connecting structure for the acid pot and the middle cover of the lead storage battery, the acid outlet pipe and the supporting legs are arranged on the bottom surface of the acid pot, the acid filling hole column and the supporting column are arranged on the top surface of the middle cover, the acid outlet pipe and the acid filling hole column are connected through the first connecting nozzle, and the supporting column and the supporting legs are connected through the second connecting nozzle, so that the acid pot and the middle cover are firmly connected; the problems of swinging, loosening, falling and the like of the acid pot on a production line are solved.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid battery technology, specifically relating to a connection structure between the lead-acid battery acid reservoir and the middle cover. Background Technology

[0002] A lead-acid battery is a type of storage battery whose electrodes are primarily made of lead and its oxides, and whose electrolyte is a sulfuric acid solution. During discharge, the lead dioxide at the positive electrode and the spongy lead at the negative electrode are converted into lead sulfate; during charging, the lead sulfate at the positive and negative electrodes are converted back into lead dioxide and spongy lead, respectively. A single lead-acid battery has a rated voltage of 2V, and 2 to 6 individual cells are often connected in series to form lead-acid batteries with rated voltages of 4V, 6V, 8V, 10V, and 12V.

[0003] Formation is a crucial step in lead-acid battery production, involving the conversion of the positive electrode active material into lead dioxide and the negative electrode active material into spongy lead through charging and discharging. The acid reservoir is a container used to add and store sulfuric acid solution during the formation process.

[0004] There are two common structures for 12V rated lead-acid batteries: a 1*6 single-row structure and a 2*3 double-row structure. During the formation process, the connection between the 2*3 double-row lead-acid battery and the acid reservoir is much stronger than that between the 1*6 single-row lead-acid battery and the acid reservoir. After adding acid to a 1*6 single-row lead-acid battery, the connection between the acid reservoir and the battery is not strong enough, leading to phenomena such as the acid reservoir wobbling, loosening, and falling off during the process of moving the battery through the production line.

[0005] For example, utility model patent CN215184450U discloses a metered acid filling pot for vacuum formation of a storage battery, including a pot body. The bottom surface of the pot body has a lower acid tube communicating with the inner cavity of the metered acid filling pot. The bottom end of the lower acid tube has an insertion interface that engages with the acid filling hole post on the top surface of the storage battery. The lower acid tube is located on one side of the bottom surface of the pot body, and a support foot is provided on the other side of the bottom surface of the pot body. When the metered acid filling pot is assembled onto the storage battery, the lower acid tube engages with the acid filling hole post on the top surface of the storage battery, while the support foot can abut against other positions on the top surface of the storage battery. This makes the metered acid filling pot more stable when assembled onto the storage battery and less likely to tip over. However, the structure of the acid filling pot in this prior art still has the problem of poor connection firmness. Utility Model Content

[0006] This utility model addresses the aforementioned shortcomings in the existing technology by providing a connection structure for the lead-acid battery acid reservoir and the middle cover.

[0007] A connection structure for a lead-acid battery acid reservoir and a middle cover includes an acid reservoir and a middle cover. The top surface of the middle cover has an acid injection hole post, and the middle surface of the acid injection hole post has an acid injection hole in the middle. The acid reservoir includes a reservoir body and a reservoir cover. The bottom surface of the reservoir body is provided with an acid outlet pipe and a support foot. The connection structure for the lead-acid battery acid reservoir and the middle cover also includes a first connecting nozzle for connecting the acid outlet pipe and the acid injection hole post.

[0008] The top surface of the middle cover is provided with a support column, and the connection structure between the lead-acid battery acid reservoir and the middle cover also includes a second connecting nozzle for connecting the support column and the support foot.

[0009] Preferably, the first and second connectors are made of soft plastic, silicone, or rubber.

[0010] Preferably, the pot body and lid are made of rigid ABS, PC or PP transparent plastic.

[0011] Preferably, the top surface of the middle cover has a cover plate groove for assembling a cover plate;

[0012] The acid injection hole column is located in the cover plate groove, and the support column is also located in the cover plate groove and does not protrude from the mounting surface of the cover plate.

[0013] More preferably, the acid injection holes are arranged in a row along the length of the middle cover, and the support columns are also arranged in a row along the length of the middle cover.

[0014] In a further preferred embodiment, the top surface of the middle cover is also provided with two terminal slots, the terminal slots are located on one side of the middle cover, the width of the acid pot is smaller than the width of the middle cover, and the acid pot avoids the terminal slots.

[0015] More preferably, the number of support columns is 2-4.

[0016] Preferably, the top surfaces of both the first and second connecting nozzles have guide openings.

[0017] The connection structure of the lead-acid battery acid reservoir and the middle cover of this utility model has an acid outlet pipe and a support foot on the bottom surface of the acid reservoir, an acid injection hole and a support column on the top surface of the middle cover, and the acid outlet pipe and the acid injection hole are connected by a first connecting nozzle, and the support column and the support foot are connected by a second connecting nozzle. This makes the acid reservoir and the middle cover firmly connected and solves the problems of the acid reservoir swaying, loosening and falling off on the production line. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the connection structure between the lead-acid battery acid reservoir and the middle cover of this utility model.

[0019] Figure 2 This is a side view of the connection structure between the lead-acid battery acid reservoir and the middle cover of this utility model.

[0020] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0021] Figure 4 for Figure 2 A cross-sectional view along the BB direction.

[0022] Figure 5 This is a three-dimensional structural diagram of the lead-acid battery acid reservoir.

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the middle cover.

[0024] Figure 7 This is a three-dimensional structural diagram of the first connecting nozzle.

[0025] Figure 8 This is a three-dimensional structural diagram of the second connecting nozzle.

[0026] Reference numerals: Acid pot 1, pot body 11, pot lid 12, acid outlet pipe 13, support foot 14, middle cover 2, cover groove 21, acid injection hole post 22, acid injection hole 23, support post 24, terminal groove 25.

[0027] First connecting nozzle 3, guide port 31.

[0028] Second connecting nozzle 4, guide port 41. Detailed Implementation

[0029] like Figures 1 to 8 As shown, a connection structure for a lead-acid battery acid reservoir and a middle cover includes an acid reservoir 1 and a middle cover 2. The top surface of the middle cover 2 has a cover plate groove 21 for assembling a cover plate, but the cover plate is not yet assembled during the acid addition and formation process. An acid injection hole column 22 is provided in the cover plate groove 21, and an acid injection hole 23 is provided in the middle of the acid injection hole column 22 for adding acid into the battery.

[0030] In the structure shown in the figure, the connection structure of this application is applicable to a battery with 6 cells, each cell containing one electrode group. Correspondingly, the top surface of the middle cover 2 has 6 acid injection holes 22, each acid injection hole 22 corresponding to one cell. The 6 cells are arranged in a 1*6 row.

[0031] The acid dispenser 1 includes a body 11 and a lid 12. The bottom surface of the body 11 is provided with an acid outlet pipe 13 and a support foot 14. The acid outlet pipe 13 and the acid injection port 22 correspond one-to-one. The connection structure between the lead-acid battery acid dispenser and the lid also includes a first connecting nozzle 3 for connecting the acid outlet pipe 13 and the acid injection port 22. (The last sentence appears to be incomplete and possibly refers to a different part of the design.) Figure 4As shown, one end of the first connecting nozzle 3 is connected to the acid outlet tube 13, and the other end is connected to the acid injection port column 22. The acid outlet tube 13 and the acid injection port column 22 abut against each other and are connected by the first connecting nozzle 3, ensuring a secure connection. Preferably, both the acid outlet tube 13 and the acid injection port column 22 are cylindrical in shape and have the same outer diameter, while the inner diameter of the first connecting nozzle 3 is consistent from top to bottom.

[0032] The top surface of the middle cover 2 is provided with a support column 24, which is also located in the cover plate groove 21 and does not protrude from the mounting surface of the cover plate. By setting the support column 24 in the cover plate groove 21, and after the cover plate is assembled into the cover plate groove 21, the support column 24 is not visible from the outside, ensuring that the overall appearance of the battery remains neat and beautiful.

[0033] The acid injection columns 22 are arranged in a row along the length of the middle cover 2, and the support columns 24 are also arranged in a row along the length of the middle cover 2. Preferably, there are 2-4 support columns 24. In the structure shown in the figure, there are 3 support columns 24, arranged in a row with intervals.

[0034] like Figure 3 As shown, the support column 24 corresponds one-to-one with the support foot 14. The connection structure between the lead-acid battery acid reservoir and the middle cover also includes a second connecting nozzle 4 for connecting the support column 24 and the support foot 14. One end of the second connecting nozzle 4 is connected to the support foot 14, and the other end is connected to the support column 24. The support column 24 and the support foot 14 abut against each other, and are connected by the second connecting nozzle 4, making the connection firm. Preferably, both the support foot 14 and the support column 24 are cylindrical in shape and have the same outer diameter, and the inner diameter of the second connecting nozzle 4 is the same from top to bottom.

[0035] The top surface of the first connecting nozzle 3 has a guide opening 31 for easy assembly with the acid outlet tube 13. The top surface of the second connecting nozzle 4 has a guide opening 41 for easy assembly with the support foot 14.

[0036] The body 11 and lid 12 are made of rigid ABS, PC, or PP transparent plastic. The first spout 3 and the second spout 4 are made of flexible plastic, silicone, or rubber.

[0037] The top surface of the middle cover 2 also has two terminal slots 25. One terminal slot 25 is used to assemble the positive terminal, and the other terminal slot 25 is used to assemble the negative terminal. In the structure shown in the figure, the terminal caps in the terminal slots 25 have not yet been removed. During subsequent battery assembly, the terminal caps need to be removed to expose the terminal posts and connect them to the terminals. The two terminal slots 25 are located on one side of the middle cover 2. The width of the acid reservoir 1 is smaller than the width of the middle cover 2. The acid reservoir 1 avoids the terminal slots 25, so that the acid reservoir 1 will not block the position of the terminal slots 25, which facilitates wiring during acid formation.

[0038] The connection structure of the lead-acid battery acid reservoir and the middle cover of this utility model has an acid outlet pipe and a support foot on the bottom surface of the acid reservoir, an acid injection hole and a support column on the top surface of the middle cover, and the acid outlet pipe and the acid injection hole are connected by a first connecting nozzle, and the support column and the support foot are connected by a second connecting nozzle. This makes the acid reservoir and the middle cover firmly connected and solves the problems of the acid reservoir swaying, loosening and falling off on the production line.

Claims

1. A connection structure for a lead-acid battery acid reservoir and a middle cover, comprising an acid reservoir and a middle cover, wherein the top surface of the middle cover has an acid injection hole post, and the acid injection hole post has an acid injection hole in the middle; the acid reservoir comprises a reservoir body and a reservoir cover, and the bottom surface of the reservoir body is provided with an acid outlet pipe and a support foot, characterized in that... The connection structure between the lead-acid battery acid reservoir and the middle cover also includes a first connecting nozzle for connecting the acid outlet pipe and the acid injection hole column. The top surface of the middle cover is provided with a support column, and the connection structure between the lead-acid battery acid reservoir and the middle cover also includes a second connecting nozzle for connecting the support column and the support foot.

2. The connection structure between the lead-acid battery acid reservoir and the middle cover according to claim 1, characterized in that, The first and second connectors are made of soft plastic, silicone, or rubber.

3. The connection structure between the lead-acid battery acid reservoir and the middle cover according to claim 1, characterized in that, The pot body and lid are made of rigid ABS, PC, or PP transparent plastic.

4. The connection structure between the lead-acid battery acid reservoir and the middle cover according to claim 1, characterized in that, The top surface of the middle cover has a cover plate groove for assembling a cover plate; The acid injection hole column is located in the cover plate groove, and the support column is also located in the cover plate groove and does not protrude from the mounting surface of the cover plate.

5. The connection structure between the lead-acid battery acid reservoir and the middle cover according to claim 4, characterized in that, The acid injection holes are arranged in a row along the length of the middle cover, and the support columns are also arranged in a row along the length of the middle cover.

6. The connection structure between the lead-acid battery acid reservoir and the middle cover according to claim 5, characterized in that, The top surface of the middle cover is also provided with two terminal slots, which are located on one side of the middle cover. The width of the acid pot is smaller than the width of the middle cover, and the acid pot avoids the terminal slots.

7. The connection structure between the lead-acid battery acid reservoir and the middle cover according to claim 5, characterized in that, The number of support columns is 2-4.

8. The connection structure between the lead-acid battery acid reservoir and the middle cover according to claim 1, characterized in that, The top surfaces of both the first and second connecting nozzles have guide openings.

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