Storage battery terminal post

Abstract

The utility model discloses a storage battery terminal post which comprises a lead base and a copper core embedded in the lead base, the top surface of the copper core is exposed on the top surface of the lead base, the top surface of the copper core is provided with a wiring screw hole matched with a tightening bolt for use, the periphery of the copper core is convexly provided with a circular truncated cone, and the circular truncated cone is provided with a notch. According to the storage battery terminal post, the circular truncated cone is arranged on the periphery of the copper core, the circular truncated cone protrudes out of the periphery of the copper core, meanwhile, the circular truncated cone is further provided with the notch, when the terminal post is cast, the copper core is placed into a mold, lead liquid is cast into the mold, the lead liquid is cooled and solidified to form a lead base, and the copper core and the lead base are meshed with each other through the arrangement of the circular truncated cone and the notch to form a whole. When the connecting wire matched with the bolt is screwed, the copper core cannot rotate because the lead base is meshed with the copper core entity. Meanwhile, the upper surface and the lower surface of the circular truncated cone on the periphery of the copper core are filled with lead, and the circular truncated cone can completely prevent the copper core from being pulled out upwards.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and particularly relates to a battery terminal post. Background Art

[0002] In order to improve the current conduction ability of the lead-acid battery terminal post, a copper core of the terminal post is usually added to the lead alloy. The copper core of the terminal post and the lead terminal post body are two materials. During the production of the terminal post, the copper core is placed in a mold, and then lead liquid is poured into the mold. The copper core and the terminal post body are connected by a lead-clad layer. However, there is an upper limit to the bonding force between the two materials. During the use of the battery, since the copper core and the connecting wire need to be tightened, sometimes the copper core of the terminal post rotates, causing damage to the connection layer between the copper core and the lead body, increasing the internal resistance of the terminal post, and resulting in the failure of the battery and inability to use.

[0003] The main reason for the poor bonding between the copper core of the terminal post and the lead-clad layer is that when the copper core is inserted into the top of the lead base, although the overall current conduction ability of the terminal post can be improved, after all, the copper core and the lead base are not an integral body. When connecting the battery terminal posts with bolts or connecting the terminal post with the charging machine lead wire, the copper core and the lead base of the terminal post are likely to rotate together or be pulled out, resulting in the separation of the copper core and the lead base.

[0004] In order to enhance the connection strength between the copper core and the lead base, a convex ring or a groove is generally added to the outer circumference of the copper core.

[0005] For example, the utility model with the authorization announcement number CN216213960U discloses a battery terminal post, which includes a lead base and a copper core embedded in the lead base. A wiring screw hole for cooperating with a tightening bolt is opened on the top surface of the copper core. An inclined mouth drainage groove is opened on the outer peripheral surface of the copper core. The width of the groove bottom surface of the inclined mouth drainage groove is smaller than the width of the groove opening. The upper bottom surface of the inclined mouth drainage groove slopes upward and the lower bottom surface slopes downward.

[0006] However, in the above prior art, only an inclined mouth drainage groove is opened on the outer circumference of the copper core, and the effect still needs to be further improved. Summary of the Utility Model

[0007] The utility model aims at the above deficiencies existing in the prior art and provides a battery terminal post.

[0008] A battery terminal post includes a lead base and a copper core embedded in the lead base. The top surface of the copper core is exposed on the top surface of the lead base, and a wiring screw hole for cooperating with a tightening bolt is opened on the top surface of the copper core. A round platform is convexly provided on the outer circumference of the copper core, and a notch is provided on the round platform.

[0009] Preferably, the position of the round platform is at 1 / 3 to 2 / 3 of the overall height of the copper core from bottom to top.

[0010] Preferably, the thickness of the frustum in the vertical direction is 3 to 5 mm.

[0011] Preferably, the diameter of the frustum is 3 to 5 mm larger than the diameter of the part of the copper core without the frustum.

[0012] Preferably, the number of the frustums is one.

[0013] Preferably, the notches include a plurality of notches arranged at intervals, and the diameter at the notches is the same as the diameter of the part of the copper core without the frustum.

[0014] More preferably, there are 4 notches in total, every two form a group, the two notches in the same group are located on one side, and the two groups of notches are located on opposite sides respectively;

[0015] In the notches located in the same group, the side walls of the notches are arranged in parallel.

[0016] Preferably, the outer surface of the copper core is rolled with patterns.

[0017] For the battery terminal post of the present invention, by arranging a frustum on the outer periphery of the copper core, the frustum protrudes from the outer periphery of the copper core, and at the same time, notches are also arranged on the frustum. When casting the post, the copper core is placed in a mold, and lead liquid is poured in. The lead liquid cools and solidifies to form a lead base. The copper core and the lead base are engaged with each other through the arrangement of the frustum and the notches to form an integral body.

[0018] When connecting wires in cooperation with tightening bolts, because it is the solid engagement of the lead base and the copper core, the copper core will not rotate. At the same time, because the outer periphery of the copper core is filled with lead bodies on the upper and lower surfaces of the frustum, the frustum can also completely prevent the copper core from being pulled out upwards. Description of the Drawings

[0019] Figure 1 It is a partial cross-sectional view of the battery terminal post of the present invention.

[0020] Figure 2 It is a top view of the battery terminal post of the present invention.

[0021] Figure 3 It is a partial cross-sectional view of the copper core.

[0022] Figure 4 It is Figure 3 The cross-sectional view along the A-A direction in

[0023] Reference signs: lead base 1, base 11, copper core 2, connection screw hole 21, frustum 22, notch 23. Detailed Description of the Invention

[0024] As Figures 1 to 4As shown, a battery terminal post includes a lead base 1 and a copper core 2 embedded in the lead base 1. The top surface of the copper core 2 is exposed on the top surface of the lead base 1, and a wiring screw hole 21 matching the tightening bolt is provided on the top surface of the copper core 2. The top surface of the copper core 2 is flush with the top surface of the lead base 1, or, as shown in Figure 1 , the top of the copper core 2 protrudes from the top surface of the lead base 1.

[0025] The overall shape of the lead base 1 is cylindrical, and a base 11 is provided at the bottom of the lead base 1. When assembled into a battery, the base 11 is welded to the bus bar.

[0026] The overall shape of the copper core 2 is also cylindrical. Patterns are rolled on the outer surface of the copper core 2, increasing the bonding area between the copper core 2 and the lead base 1, thereby increasing the torsional resistance.

[0027] A frustum 22 protrudes from the outer periphery of the copper core 2, and a notch 23 is provided on the frustum 22. The setting position of the frustum 22 is at 1 / 3 - 2 / 3 of the overall height of the copper core 2 from bottom to top. Preferably, the setting position of the frustum 22 is at 2 / 3 of the overall height of the copper core 2.

[0028] The thickness of the frustum 22 in the vertical direction is 3 - 5 mm, preferably 4 mm. The diameter of the frustum 22 is 3 - 5 mm larger than the diameter of the part of the copper core 2 without the frustum 22, preferably 4 mm larger.

[0029] The notch 23 includes a plurality of spaced - apart ones. The diameter at the notch 23 is the same as the diameter of the part of the copper core 2 without the frustum 22. Preferably, there are 4 notches 23 in total, with every two as a group. The two notches 23 in the same group are located on one side, and the two groups of notches 23 are located on opposite sides. Among the notches 23 in the same group, the side walls of the notches 23 are parallel. The notch 23 is equivalent to dividing the copper core 2 into multiple pieces in the structure where the frustum 22 surrounds it in a circle. When casting the lead base 1, the lead liquid enters the notch 23, making the lead base 1 and the copper core 2 tightly fitted together, improving the connection strength. The lead liquid can also flow smoothly between the upper and lower parts of the frustum 22 through the notch 23, simplifying the process of discharging the gas in the mold during casting.

[0030] The number of frustums 22 can be one, or two or more spaced apart vertically. However, due to the special structural design of the frustum 22 and the notch 23 in this application, the connection strength between the copper core 2 and the lead base 1 can be greatly improved, and the possibility of relative rotation or the copper core 2 being pulled out upward is greatly reduced. Therefore, one frustum 22 is sufficient.

[0031] In the battery terminal post of the utility model, a frustum 22 is arranged on the outer periphery of the copper core. The frustum 22 protrudes from the outer periphery of the copper core 2. At the same time, a notch 23 is also arranged on the frustum 22. When the pole post is cast, the copper core is placed in a mold, and lead liquid is poured in. The lead liquid cools and solidifies to form a lead base 1. The copper core 2 and the lead base 1 are engaged with each other through the arrangement of the frustum 22 and the notch 23 to form an integral body. When tightening the wiring used in cooperation with the bolt, because the lead base 1 and the copper core 2 are engaged physically, the copper core 2 will not rotate. At the same time, since the outer periphery of the copper core 2 is filled with lead bodies on the upper and lower surfaces of the frustum 22, the frustum 22 can also completely prevent the copper core 2 from being pulled out upwards.

Claims

1. A battery terminal post, comprising a lead base and a copper core embedded in the lead base, the top surface of the copper core being exposed to the top surface of the lead base, and a wiring screw hole for mating with a tightening bolt being formed on the top surface of the copper core, characterized in that, A frustum is convexly provided on the outer periphery of the copper core, and a notch is provided on the frustum.

2. The battery terminal post according to claim 1, wherein, The installation position of the frustum is at 1 / 3 to 2 / 3 of the overall height of the copper core when counted from bottom to top.

3. The battery terminal post according to claim 1, characterized in that, The thickness of the frustum in the vertical direction is 3 to 5 mm.

4. The battery terminal post according to claim 1, characterized in that, The diameter of the frustum is 3 to 5 mm larger than the diameter of the part of the copper core without the frustum.

5. The battery terminal post according to claim 1, characterized in that, The number of the frustums is one.

6. The battery terminal post according to claim 1, characterized in that, The notch includes a plurality of notches arranged at intervals, and the diameter at the notch is the same as the diameter of the part of the copper core without the frustum.

7. The battery terminal post according to claim 6, characterized in that, There are a total of 4 notches, with every two as a group. The two notches in the same group are located on one side, and the two groups of notches are respectively located on opposite sides; Among the notches in the same group, the side walls of the notches are arranged in parallel.

8. The battery terminal post according to claim 1, characterized in that, The outer surface of the copper core is rolled with patterns.

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