Lead-acid battery pole and lead seat thereof

Abstract

The utility model discloses a lead acid battery pole and lead seat, including first pole body, second pole body and welding seat, the one end of first pole body is connected with welding seat, the other end of first pole body is connected with second pole body, the diameter of first pole body is less than that of second pole body, and the height of first pole body is less than that of second pole body. The second column body is provided with a through hole used for being connected with a copper core. The diameter of the first column body is slightly smaller than that of the second column body, when the lead-acid battery pole lead seat and a battery cover are filled with sealant, the peripheral wall of the second column body is cut firstly, the corroded part of the peripheral wall of the second column body is removed, the first column body and the second column body are made to be the same in diameter, and it is ensured that the lead-acid battery pole lead seat is tightly attached to the sealant; and the acid leakage risk of the battery is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, specifically to lead-acid battery terminals and their lead seats. Background Technology

[0002] Lead-acid batteries are a widely used type of rechargeable battery, used in various production applications. With advancements in lead-acid battery technology, they are also being used in electric vehicles and electric buses. A utility model patent with authorization number CN203932248U discloses a lithium battery module, which includes two conductive posts. Each conductive post mainly comprises a conductive connecting post and conductive terminals extending from the conductive connecting post. The structure of the conductive posts in a lead-acid battery is similar to that in a lithium battery module, also including conductive connecting posts and conductive terminals. The conductive terminals are generally made of copper and are also called copper connectors for lead-acid battery terminals; the conductive connecting posts are generally made of lead and are also called lead-acid battery lead seats. In the prior art, lead-acid battery lead seats are generally mass-produced and then stored in a warehouse for assembly with the inner groove of the battery cover after sealing with adhesive. However, during storage, the outer wall of the lead seat is easily corroded, resulting in poor adhesion between the lead seat and the sealant, reducing the bonding strength between the conductive post and the sealant, and increasing the risk of acid seepage into the battery. Utility Model Content

[0003] To address the technical problem of easy corrosion of lead-acid battery terminals and lead seats in existing technologies, this utility model proposes a lead-acid battery terminal and its lead seat. When the lead-acid battery terminal and lead seat are filled with sealant, the outer peripheral wall of the second column is first cut to remove the corroded part of the outer peripheral wall of the second column, so that the first column and the second column have the same diameter, ensuring that the lead-acid battery terminal and lead seat are tightly bonded to the sealant, reducing the risk of acid creep in the battery.

[0004] The technical solution adopted by this utility model is as follows: a lead-acid battery terminal lead holder, characterized in that it includes a first column, a second column and a welding seat, one end of the first column is connected to the welding seat, the other end of the first column is connected to the second column, the diameter of the first column is smaller than the diameter of the second column, and the height of the first column is smaller than the height of the second column, and the second column is provided with a through hole for connecting to a copper core.

[0005] The diameter of the first column is slightly smaller than that of the second column. When applying sealant to the lead-acid battery terminals and battery cover, the outer peripheral wall of the second column is first cut to remove the corroded portion, ensuring that the first and second columns have the same diameter. This guarantees a tight fit between the lead-acid battery terminals and the sealant, reducing the risk of acid creep. Since the height of the first column is much lower than that of the second column, the overall impact of the corroded area on the outer peripheral wall of the first column is negligible.

[0006] Optionally, the welding seat is provided with a bevel for welding to the busbar.

[0007] The bevel increases the area for welding with the busbar, thus increasing the stability of the welding seat and the busbar.

[0008] Optionally, the first column has a cutting plane on the side near the inclined surface.

[0009] When welding the busbar and the welding seat, the first column connected to the welding seat is easily burned. The cutting plane increases the distance between the first column and the welding bevel, thus avoiding the first column being burned.

[0010] Optionally, the diameter difference between the first column and the second column is 2~4mm.

[0011] Optionally, the height ratio between the first column and the second column is 1:7 to 9.

[0012] Optionally, the end of the second column away from the first column is chamfered.

[0013] The chamfered edge leaves room for the cut portion. When applying the sealant, the chamfered edge at the point where the copper core rests against the second column increases the sealing area of ​​the sealant, preventing dead corners from forming.

[0014] This utility model also discloses a lead-acid battery terminal, including a copper core and a lead base as described above. The copper core includes a first copper body and a second copper body connected to the first copper body. The lower end face of the first copper body abuts against the upper end face of the second copper body. The second copper body is disposed inside the through hole. The diameter of the first copper body is the same as the diameter of the first copper body. After cutting, the first copper body, the second copper body, and the first copper body all have the same diameter.

[0015] Optionally, the second copper body has an annular groove at the end away from the first copper body, and a rectangular block is provided at the end of the annular groove away from the first copper body. The diameter of the annular groove gradually decreases from the end away from the rectangular block to the end closer to the rectangular block.

[0016] The arrangement of the annular groove and rectangular block not only increases the contact area between the copper core and the lead base of the lead-acid battery terminal, but also limits the connection between the second copper body and the second column, restricting circumferential displacement between the second copper body and the second column. The rectangular block can also be other irregular structures.

[0017] The beneficial effects of this invention are as follows: the diameter of the first column is slightly smaller than that of the second column. When the lead-acid battery terminal and the battery cover are filled with sealant, the outer peripheral wall of the second column is first cut to remove the corroded part of the outer peripheral wall of the second column, making the first and second columns the same diameter. This ensures a tight fit between the lead-acid battery terminal and the sealant, reducing the risk of acid creep in the battery. Since the height of the first column is much lower than that of the second column, the overall impact of the area of ​​corrosion on the outer peripheral wall of the first column is negligible. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the lead-acid battery terminal block according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the lead-acid battery terminals proposed in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the copper core of the lead-acid battery terminal according to an embodiment of this utility model.

[0021] The labels in the attached figures are as follows: 1. First column; 11. Cutting plane; 2. Second column; 21. Through hole; 22. Chamfer; 3. Welding seat; 31. Inclined surface; 4. First copper body; 5. Second copper body; 51. Annular groove; 52. Rectangular block. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 As shown, this embodiment discloses a lead-acid battery terminal holder, including a first column 1, a second column 2, and a welding seat 3. One end of the first column 1 is connected to the welding seat 3, and the other end of the first column 1 is connected to the second column 2. The diameter of the first column 1 is smaller than the diameter of the second column 2, and the height of the first column 1 is smaller than the height of the second column 2. The second column 2 has a through hole 21 for connecting to a copper core. The diameter of the first column 1 is slightly smaller than the diameter of the second column 2. When the lead-acid battery terminal holder and the battery cover are filled with sealant, the outer peripheral wall of the second column 2 is first cut to remove the corroded part of the outer peripheral wall of the second column 2, so that the first column 1 and the second column 2 have the same diameter, ensuring that the lead-acid battery terminal holder and the sealant are tightly bonded, reducing the risk of acid creep in the battery. Since the height of the first column 1 is much lower than that of the second column 2, the overall impact of the area of ​​corrosion on the outer peripheral wall of the first column 1 is negligible.

[0024] like Figure 1 As shown, the welding seat 3 is provided with an inclined surface 31 for welding with the busbar. The inclined surface 31 increases the welding area with the busbar, thereby increasing the stability of the welding seat 3 in welding with the busbar.

[0025] like Figure 1 As shown, the first column 1 has a cutting plane 11 on the side near the inclined surface 31. When welding the busbar and the welding seat 3, the first column 1 connected to the welding seat 3 is easily burned. The cutting plane 11 increases the distance between the first column 1 and the welding inclined surface 31, thus preventing the first column 1 from being burned.

[0026] In this embodiment, the diameter difference between the first column 1 and the second column 2 is 2-4 mm. The diameter difference between the first column 1 and the second column 2 can be 2 mm, 3 mm, or 4 mm. The height ratio between the first column 1 and the second column 2 is 1:7-9. The height ratio between the first column 1 and the second column 2 can be 1:7, 1:8, or 1:9.

[0027] like Figure 1 As shown, the end of the second column 2 away from the first column 1 has a chamfer 22. The chamfer 22 leaves room for the part to be cut. When applying sealant, the chamfer 22 increases the sealing area of ​​the sealant at the point where the copper core abuts against the second column 2, thus avoiding dead corners in the seal.

[0028] like Figure 2 and 3 As shown, this utility model also discloses a lead-acid battery terminal, including a copper core and a lead base as described above. The copper core includes a first copper body 4 and a second copper body 5 connected to the first copper body 4. The lower end face of the first copper body 4 abuts against the upper end face of the second column 2. The second copper body 5 is disposed inside the through hole 21. The diameter of the first copper body 4 is the same as the diameter of the first column 1. After cutting, the first column 1, the second column 2, and the first copper body 4 all have the same diameter.

[0029] like Figure 3 As shown, the second copper body 5 has an annular groove 51 at the end away from the first copper body 4, and a rectangular block 52 at the end of the annular groove 51 away from the first copper body 4. The diameter of the annular groove 51 gradually decreases from the end away from the rectangular block 52 towards the end closer to the rectangular block 52. The annular groove 51 and the rectangular block 52 not only increase the contact area between the copper core and the lead-acid battery terminal, but also limit the connection between the second copper body 5 and the second column 2, restricting circumferential displacement between them. The rectangular block 52 can also be other irregular structures.

[0030] It is understood that the specific embodiments described above are merely for explaining the relevant utility model and not for limiting the utility model. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict with each other. All equivalent structural transformations made based on the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly included within the protection scope of this utility model.

Claims

1. A lead acid battery post lead base characterized in that, The lead-acid battery pole post lead seat comprises a first column, a second column and a welding seat, one end of the first column is connected with the welding seat, the other end of the first column is connected with the second column, the diameter of the first column is smaller than that of the second column, and the height of the first column is smaller than that of the second column, and the second column is provided with a through hole for connecting with a copper core.

2. The lead acid battery post lead button of claim 1, wherein, The welding seat is provided with an inclined surface for welding with a bus bar.

3. The lead acid battery post lead button of claim 2, wherein, The first column is provided with a cutting plane on the side close to the inclined surface.

4. The lead acid battery post lead button of claim 1 wherein, The diameter difference between the first column and the second column is 2-4 mm.

5. The lead acid battery post lead button of claim 1 wherein, The height ratio between the first column and the second column is 1:7-9.

6. The lead acid battery post lead button of claim 1 wherein, The second column is provided with a chamfer on the end away from the first column.

7. A lead-acid battery post characterized by, The lead-acid battery pole post lead seat comprises a first column, a second column and a welding seat, one end of the first column is connected with the welding seat, the other end of the first column is connected with the second column, the diameter of the first column is smaller than that of the second column, and the height of the first column is smaller than that of the second column, and the second column is provided with a through hole for connecting with a copper core.

8. The lead-acid battery post of claim 7, wherein, The second copper body is provided with an annular groove on the end away from the first copper body, and the second copper body is provided with a rectangular block on the end of the annular groove away from the first copper body, and the diameter of the annular groove gradually decreases from the end away from the rectangular block to the end close to the rectangular block.

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