Terminal post for lead-acid storage battery and lead-acid storage battery

Abstract

The utility model discloses a terminal post for a lead-acid storage battery, and aims to provide the terminal post for the lead-acid storage battery and the lead-acid storage battery, which not only have good mechanical strength and corrosion resistance requirements, but also have good conductivity and heat dissipation performance so as to meet the application in large-current charging and discharging scenes. The lead-acid storage battery terminal comprises a copper core terminal and a lead alloy pole connected with a busbar of a lead-acid storage battery, a pole screw hole is formed in the end of the lead alloy pole, the copper core terminal comprises a terminal screw and a copper terminal arranged at one end of the terminal screw, the terminal screw is in threaded connection with the pole screw hole, and an external screw hole is formed in the end face of the copper terminal.

Description

Technical Field

[0001] This utility model relates to the field of lead-acid battery technology, specifically to a terminal post for a lead-acid battery and a lead-acid battery. Background Technology

[0002] Lead-acid batteries have high requirements for the battery terminals in terms of conductivity, mechanical strength and corrosion resistance; especially for large lead-acid batteries, in some applications with high current and high reliability requirements, the requirements for the battery terminals in terms of conductivity, mechanical strength and corrosion resistance are even higher.

[0003] Currently, lead-acid batteries generally use one-piece terminals, made of lead alloy or copper core wrapped with a nickel-plated layer. While the one-piece terminals made of lead alloy have good mechanical strength and corrosion resistance, and can withstand large torque and resist electrolyte erosion, they are difficult to meet the increasingly demanding high-current charging and discharging scenarios. The one-piece terminals made of copper core wrapped with a nickel-plated layer have good conductivity and heat dissipation performance, and can meet the application of high-current charging and discharging scenarios, but the mechanical strength and corrosion resistance of pure copper are not good, and the nickel plating layer is thin and easily damaged.

[0004] For example, Chinese Patent Publication No. CN112259925A, the utility model invention is entitled "An integrated terminal block for lead-acid batteries and its assembly process method". The terminal block in this application is an integrated terminal block, which also has the above-mentioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a lead-acid battery terminal post and lead-acid battery that have good mechanical strength and corrosion resistance, as well as good electrical conductivity and heat dissipation performance, to meet the requirements of high current charging and discharging scenarios.

[0006] The technical solution of this utility model is:

[0007] A terminal post for a lead-acid battery includes a copper core terminal and a lead alloy terminal connected to the busbar of the lead-acid battery. The end of the lead alloy terminal has a terminal threaded hole. The copper core terminal includes a terminal screw and a copper terminal at one end of the terminal screw. The terminal screw and the terminal threaded hole are connected by a thread. An external threaded hole is provided on the end face of the copper terminal. This solution provides a copper-lead hybrid structure (copper core and lead alloy terminal), which has the following advantages.

[0008] It has excellent conductivity, with the copper core having extremely high conductivity, which can effectively reduce resistance and energy loss, making it suitable for high-current charging and discharging applications.

[0009] With good mechanical strength, the combination design of copper core and lead alloy post can enhance the mechanical strength of the post by using lead alloy post, which can withstand greater torque and effectively avoid loosening or damage caused by external force.

[0010] Excellent corrosion resistance: Lead alloy terminals have excellent corrosion resistance and can resist the erosion of electrolyte, while the copper core does not come into contact with the acidic environment inside the battery, further improving corrosion resistance.

[0011] With good heat dissipation performance, the excellent thermal conductivity of the copper core helps to dissipate heat quickly, avoiding battery performance degradation or safety hazards caused by local overheating; therefore, the lead-acid battery terminal post of this solution has both good mechanical strength and corrosion resistance requirements, as well as good electrical conductivity and heat dissipation performance, to meet the application requirements of high current charging and discharging scenarios.

[0012] In addition, the copper core consists of a terminal screw and a copper terminal with an external screw hole. The external screw hole facilitates the connection of external loads. The terminal screw is connected to the lead alloy pole by a thread (considering that the copper terminal part is prone to wear and corrosion during use). The copper core part can be quickly replaced, reducing maintenance and repair costs.

[0013] Preferably, the lower outer surface of the lead alloy electrode post is provided with a downwardly sloping groove structure. The downwardly sloping groove structure includes a groove that extends obliquely along the outer surface of the lead alloy electrode post. The downwardly sloping groove structure increases the heat dissipation area of ​​the electrode post, reducing the risk of abnormal local temperature rise and preventing high temperatures from affecting battery performance and lifespan. Furthermore, because the groove extends obliquely along the outer surface of the lead alloy electrode post, it effectively prevents external liquids from remaining inside the groove (as they will flow downwards), thereby reducing corrosion of the electrode post.

[0014] Preferably, the downward-sloping groove structure includes two sets of downward-sloping groove groups, each set comprising several downward-sloping grooves, with each groove in the same group sequentially distributed around the lead alloy electrode post circumferentially. This further increases the electrode post's heat dissipation area, reduces the risk of abnormal local temperature increases, and prevents high temperatures from affecting battery performance and lifespan.

[0015] Preferably, a gap is provided between the upper and lower sets of downward-sloping grooves. The outer surface of the lead alloy terminal corresponding to this gap forms a smooth annular sealing surface, which mates with the sealing ring inside the terminal through-hole on the lead-acid battery casing. In this way, by engaging the annular sealing surface with the sealing ring inside the terminal through-hole on the lead-acid battery casing, the downward-sloping grooves increase the heat dissipation area of ​​the terminal without affecting the sealing performance between the terminal and the terminal through-hole on the casing. This reduces the risk of abnormal local temperature rise and prevents high temperatures from affecting battery performance and lifespan.

[0016] Preferably, when the terminal posts for lead-acid batteries are used in lead-acid batteries, the lead alloy posts pass through the terminal post through-holes on the lead-acid battery casing. In the downward-sloping groove structure, the upper end of a portion of the downward-sloping groove is located outside the casing, while the lower end extends into the terminal post through-hole. The lead alloy posts and terminal post through-holes are sealed with sealant, and this sealant extends upwards along the lead alloy posts and covers each downward-sloping groove located on the outside of the casing. Because the sealant extends upwards along the lead alloy posts and covers each downward-sloping groove located on the outside of the casing, the downward-sloping grooves do not affect the sealant's ability to seal the gap between the lead alloy posts and terminal post through-holes; simultaneously, it effectively increases the contact area between the sealant and the posts, increasing the bonding strength between the two.

[0017] Preferably, the outer surface of the upper part of the lead alloy electrode post is provided with an upwardly sloping groove structure. The upwardly sloping groove structure includes an upwardly sloping groove that extends obliquely along the outer surface of the lead alloy electrode post. The upwardly sloping groove structure increases the heat dissipation area of ​​the electrode post, reducing the risk of abnormal local temperature rise and preventing high temperatures from affecting battery performance and lifespan. Furthermore, because the upwardly sloping groove extends obliquely along the outer surface of the lead alloy electrode post, it also effectively prevents external liquids from remaining in the downwardly sloping groove (which would flow downwards), thereby reducing corrosion of the electrode post.

[0018] Preferably, the inclined groove structure includes several inclined grooves, each arranged sequentially around the lead alloy electrode post in the circumferential direction. This further increases the heat dissipation area of ​​the electrode post, reduces the risk of abnormal local temperature increases, and prevents high temperatures from affecting battery performance and lifespan.

[0019] Preferably, the upper end of the inclined groove is connected to the upper surface of the lead alloy electrode post. This further increases the heat dissipation area of ​​the electrode post, reduces the risk of abnormal local temperature rise, and avoids high temperatures affecting battery performance and lifespan.

[0020] Preferably, the lower end of the lead alloy terminal is provided with a base, the outer surface of the copper core terminal is provided with a nickel plating layer, the terminal screw hole is coaxially distributed with the lead alloy terminal, the external screw hole is coaxially distributed with the terminal screw, and an annular groove is provided on the outer surface of the copper terminal. The lead alloy terminal is welded to the busbar of the lead-acid battery through the base.

[0021] A lead-acid battery, including a lead-acid battery terminal post.

[0022] The beneficial effects of this utility model are that it has both good mechanical strength and corrosion resistance, as well as good electrical conductivity and heat dissipation performance, so as to meet the application requirements of high current charging and discharging scenarios. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a terminal post for a lead-acid battery according to this utility model.

[0024] Figure 2 This is a cross-sectional structural diagram of a terminal post for a lead-acid battery according to the present invention.

[0025] Figure 3 This is a front view of a terminal post for a lead-acid battery according to this utility model.

[0026] In the picture:

[0027] Lead alloy pole 1, pole screw hole 1.0, base 1.1, annular sealing surface 1.2;

[0028] 2. Copper core terminal; 2.1. Terminal screw; 2.2. Copper terminal; 2.3. External screw hole; 2.4. Annular groove;

[0029] Lower inclined groove structure 3, lower inclined groove 3.1;

[0030] Upper inclined groove structure 4, upper inclined groove 4.1. Detailed Implementation

[0031] Specific Implementation Example 1, such as Figure 1 , Figure 2 As shown, a lead-acid battery terminal includes a copper core terminal 2 and a lead alloy terminal 1. The lead alloy terminal 1 is used to connect to the busbar of the lead-acid battery. The end of the lead alloy terminal 1 has a terminal screw hole 1.0. The copper core terminal 2 includes a terminal screw 2.1 and a copper terminal 2.2 disposed at one end of the terminal screw 2.1. The terminal screw 2.1 is threadedly connected to the terminal screw hole 1.0. An external screw hole 2.3 is provided on the end face of the copper terminal 2.2.

[0032] The terminal post structure for a lead-acid battery in this embodiment adopts a copper-lead interlocking structure (copper core and lead alloy terminal post 1), which has the following advantages.

[0033] It has excellent conductivity, with the copper core having extremely high conductivity, which can effectively reduce resistance and energy loss, making it suitable for high-current charging and discharging applications.

[0034] With good mechanical strength, the combination design of copper core and lead alloy pole 1 can enhance the mechanical strength of the pole by using lead alloy pole 1, which can withstand greater torque and effectively avoid loosening or damage caused by external force.

[0035] Excellent corrosion resistance: The lead alloy terminal 1 has excellent corrosion resistance and can resist the erosion of the electrolyte, while the copper core does not come into contact with the acidic environment inside the battery, further improving the corrosion resistance.

[0036] With good heat dissipation performance, the excellent thermal conductivity of the copper core helps to dissipate heat quickly, avoiding battery performance degradation or safety hazards caused by local overheating; therefore, the lead-acid battery terminal post of this embodiment has both good mechanical strength and corrosion resistance requirements, as well as good electrical conductivity and heat dissipation performance, to meet the application requirements of high current charging and discharging scenarios.

[0037] In addition, the copper core consists of a terminal screw 2.1 and a copper terminal 2.2 with an external screw hole 2.3. The external screw hole 2.3 facilitates the connection of external loads. The terminal screw 2.1 is connected to the lead alloy pole 1 by a thread (considering that the copper terminal 2.2 is prone to wear and corrosion during use). The copper core can be quickly replaced, reducing maintenance costs.

[0038] Specific embodiment two, such as Figure 1 , Figure 2 , Figure 3 As shown, a lead-acid battery terminal includes a copper core terminal 2 and a lead alloy terminal 1. The lead alloy terminal 1 is used to connect to the busbar of the lead-acid battery. In this embodiment, the lead alloy terminal 1 is a lead-tin alloy terminal; however, it should be noted that other lead alloys can also be used. In this embodiment, the copper core terminal 2 is connected to the upper end of the lead alloy terminal 1, and the lower end of the lead alloy terminal 1 is used to connect to the busbar of the lead-acid battery.

[0039] The lead alloy pole 1 has a pole screw hole 1.0 at its end. In this embodiment, the pole screw hole 1.0 is located at the upper end of the lead alloy pole 1. In this embodiment, the pole screw hole 1.0 and the lead alloy pole 1 are coaxially distributed. It should be noted that the external screw hole 2.3 and the terminal screw 2.1 can also be non-coaxially distributed. For example, the axes of the external screw hole 2.3 and the terminal screw 2.1 are arranged parallel to each other and eccentrically.

[0040] The copper core terminal 2 includes a terminal screw 2.1 and a copper terminal 2.2 disposed at one end of the terminal screw 2.1. In this embodiment, the copper terminal 2.2 is cylindrical and coaxially distributed with the terminal screw 2.1, with the copper terminal 2.2 disposed at the upper end of the terminal screw 2.1. It should be noted that the copper terminal 2.2 and the terminal screw 2.1 can also be non-coaxial, and the copper terminal 2.2 can also be block-shaped or cylindrical with a polygonal cross-section, etc.

[0041] The terminal screw 2.1 is threadedly connected to the terminal post screw hole 1.0, so that the copper core terminal 2 and the lead alloy terminal post 1 are connected by threads. The depth of the terminal post screw hole 1.0 is greater than or equal to the length of the terminal screw 2.1, so that after the terminal screw 2.1 is tightened, the copper terminal 2.2 abuts against the end of the lead alloy terminal post 1.

[0042] An external screw hole 2.3 is provided on the end face of the copper terminal 2.2. In this embodiment, the external screw hole 2.3 is located on the upper end face of the copper terminal 2.2. The external screw hole 2.3 is used for external load connection, for example, a copper lug is locked to the external screw hole 2.3 by a bolt. In this embodiment, the external screw hole 2.3 and the terminal screw 2.1 are coaxially distributed. This increases the manufacturing depth of the external screw hole 2.3, and the lower end of the external screw hole 2.3 can extend into the terminal screw 2.1, which is beneficial to the connection stability of the external load to the external screw hole 2.3 by bolts. Of course, it should be noted that the external screw hole 2.3 and the terminal screw 2.1 can also be non-coaxially distributed. For example, the axes of the external screw hole 2.3 and the terminal screw 2.1 are arranged parallel and eccentrically.

[0043] The terminal post structure for a lead-acid battery in this embodiment adopts a copper-lead interlocking structure (copper core and lead alloy terminal post 1), which has the following advantages.

[0044] It has excellent conductivity, with the copper core having extremely high conductivity, which can effectively reduce resistance and energy loss, making it suitable for high-current charging and discharging applications.

[0045] With good mechanical strength, the combination design of copper core and lead alloy pole 1 can enhance the mechanical strength of the pole by using lead alloy pole 1, which can withstand greater torque and effectively avoid loosening or damage caused by external force.

[0046] Excellent corrosion resistance: The lead alloy terminal 1 has excellent corrosion resistance and can resist the erosion of the electrolyte, while the copper core does not come into contact with the acidic environment inside the battery, further improving the corrosion resistance.

[0047] With good heat dissipation performance, the excellent thermal conductivity of the copper core helps to dissipate heat quickly, avoiding battery performance degradation or safety hazards caused by local overheating; therefore, the lead-acid battery terminal post of this embodiment has both good mechanical strength and corrosion resistance requirements, as well as good electrical conductivity and heat dissipation performance, to meet the application requirements of high current charging and discharging scenarios.

[0048] In addition, the copper core consists of a terminal screw 2.1 and a copper terminal 2.2 with an external screw hole 2.3. The external screw hole 2.3 facilitates the connection of external loads. The terminal screw 2.1 is connected to the lead alloy pole 1 by a thread (considering that the copper terminal 2.2 is prone to wear and corrosion during use). The copper core can be quickly replaced, reducing maintenance costs.

[0049] Furthermore, such as Figure 1 , Figure 2 , Figure 3 As shown, the lower end of the lead alloy terminal 1 is provided with a base 1.1. The lead alloy terminal 1 is welded to the busbar of the lead-acid battery through the base 1.1. The lead alloy terminal 1 and the base 1.1 are integrally formed structures.

[0050] Furthermore, the outer surface of the copper core terminal 2 is plated with a nickel layer. This further improves the corrosion resistance of the copper core terminal 2.

[0051] Furthermore, such as Figure 2 , Figure 3 As shown, an annular groove 2.4 is provided on the outer surface of the copper terminal 2.2. This further increases the heat dissipation area of ​​the copper terminal 2.2, thereby improving its heat dissipation effect.

[0052] Furthermore, such as Figure 1 , Figure 2 , Figure 3 As shown, a downward-sloping groove structure 3 is provided on the outer surface of the lower part of the lead alloy electrode post 1. The downward-sloping groove structure 3 includes a downward-sloping groove 3.1, which extends obliquely along the outer surface of the lead alloy electrode post 1. In this embodiment, the downward-sloping groove 3.1 is spiral, straight, or arc-shaped. The inclination angle of the downward-sloping groove 3.1 can be set as needed, for example, the inclination angle of the downward-sloping groove 3.1 is 10-60 degrees. The setting of the downward-sloping groove structure 3 can, on the one hand, increase the heat dissipation area of ​​the electrode post, reduce the risk of abnormal local temperature rise, and avoid high temperature affecting battery performance and life; on the other hand, since the downward-sloping groove 3.1 extends obliquely along the outer surface of the lead alloy electrode post 1, it can also effectively prevent external liquid from remaining in the downward-sloping groove 3.1 (the liquid in the downward-sloping groove 3.1 will flow downward), thereby reducing corrosion of the electrode post.

[0053] Furthermore, such as Figure 1 , Figure 2 , Figure 3 As shown, the downward-sloping groove structure 3 includes two sets of downward-sloping grooves, one upper and one lower. Each set of downward-sloping grooves includes several downward-sloping grooves 3.1. The downward-sloping grooves 3.1 in the same set are distributed sequentially around the lead alloy electrode post 1 in a circumferential direction. The downward-sloping grooves 3.1 in the same set are distributed at the same height on the lead alloy electrode post 1. This further increases the heat dissipation area of ​​the electrode post, reduces the risk of abnormal local temperature rise, and avoids high temperatures affecting battery performance and lifespan.

[0054] Furthermore, such as Figure 3 As shown, a gap is provided between the upper and lower sets of downward sloping grooves, and the outer surface of the lead alloy terminal 1 corresponding to this gap forms a smooth annular sealing surface 1.2. This annular sealing surface 1.2 mates with the sealing ring inside the terminal through-hole on the lead-acid battery casing. Thus, by engaging the annular sealing surface 1.2 with the sealing ring inside the terminal through-hole on the lead-acid battery casing, the downward sloping grooves 3.1 can increase the heat dissipation area of ​​the terminal without affecting the sealing performance between the terminal and the terminal through-hole on the casing, reducing the risk of abnormal local temperature rise and preventing high temperatures from affecting battery performance and lifespan.

[0055] Furthermore, when the lead-acid battery terminal post is used in a lead-acid battery, the lead alloy terminal post 1 passes through the terminal post through hole on the lead-acid battery casing. The slanted groove does not affect the passage of the lead alloy terminal post 1 through the terminal post through hole on the lead-acid battery casing. In the lower slanted groove structure 3, the upper end of some of the lower slanted grooves 3.1 is located outside the casing, and the lower end extends into the terminal post through hole; specifically, in the lower slanted groove structure 3, the upper end of each lower slanted groove 3.1 in the upper group of lower slanted grooves is located outside the casing, and the lower end extends into the terminal post through hole. The lead alloy terminal post 1 and the terminal post through hole are sealed with sealant, and this sealant extends upwards along the lead alloy terminal post 1 and covers each lower slanted groove 3.1 located on the outside of the casing. Since the sealant extends upward along the lead alloy pole 1 and covers each of the lower inclined grooves 3.1 located on the outside of the housing, the lower inclined grooves 3.1 will not affect the sealant sealing the gap between the lead alloy pole 1 and the pole through hole; at the same time, it can effectively increase the contact area between the sealant and the pole, and increase the bonding strength between the two.

[0056] Furthermore, such as Figure 1 , Figure 2 , Figure 3 As shown, an upper inclined groove structure 4 is provided on the outer surface of the upper part of the lead alloy electrode post 1. The upper inclined groove structure 4 includes an upper inclined groove 4.1, which extends obliquely along the outer surface of the lead alloy electrode post 1. In this embodiment, the upper inclined groove 4.1 is spiral, straight, or arc-shaped. The inclination angle of the upper inclined groove 4.1 can be set as needed, for example, the inclination angle of the upper inclined groove 4.1 is 10-60 degrees. The setting of the upper inclined groove structure 4 can increase the heat dissipation area of ​​the electrode post, reduce the risk of abnormal local temperature rise, and avoid high temperature affecting battery performance and life; on the other hand, since the upper inclined groove extends obliquely along the outer surface of the lead alloy electrode post 1, it can also effectively prevent external liquid from remaining in the lower inclined groove 3.1 (which will flow downwards), thereby reducing corrosion of the electrode post.

[0057] Furthermore, such as Figure 2 , Figure 3 As shown, the inclined groove structure 4 includes several inclined grooves 4.1, each of which is distributed sequentially around the lead alloy electrode post 1 in a circumferential direction. This further increases the heat dissipation area of ​​the electrode post, reduces the risk of abnormal local temperature increases, and avoids high temperatures affecting battery performance and lifespan.

[0058] Furthermore, the upper end of the inclined groove is connected to the upper end face of the lead alloy electrode post 1. This further increases the heat dissipation area of ​​the electrode post, reduces the risk of abnormal local temperature rise, and avoids high temperature affecting battery performance and lifespan.

[0059] In this embodiment, the upper inclined grooves in the upper inclined groove structure 4 have the same structure, and the lower inclined grooves 3.1 in the lower inclined groove structure 3 have the same structure. The upper inclined grooves and lower inclined grooves 3.1 have the same shape. In this way, the manufacturing difficulty of each inclined groove can be reduced, which facilitates the actual processing and manufacturing of the lead alloy pole 1.

[0060] Specific embodiment three: A lead-acid battery, including a terminal post for a lead-acid battery. The specific structure of the terminal post for a lead-acid battery is described in specific embodiment one or specific embodiment two.

[0061] In this embodiment, a lead-acid battery includes a casing. The casing has a terminal through-hole that mates with a lead alloy terminal 1. The lead alloy terminal 1 passes through the terminal through-hole in the casing. The lead alloy terminal 1 and the terminal through-hole are sealed together by a sealing structure. This sealing structure includes a sealing ring and a sealant.

[0062] A sealing ring is positioned between the lead alloy electrode post 1 and the electrode post through hole. Specifically, a gap is provided between the upper and lower sets of downward inclined grooves, and the outer surface of the lead alloy electrode post 1 corresponding to this gap forms a smooth annular sealing surface 1.2. The sealing ring mates with the annular sealing surface 1.2, thereby forming a sealed connection structure between the lead alloy electrode post 1 and the electrode post through hole, preventing the setting of the downward inclined groove 3.1 from affecting the seal between the lead alloy electrode post 1 and the electrode post through hole.

[0063] The gap between the lead alloy electrode post 1 above the sealing ring and the electrode post through hole is sealed with sealant. Specifically, in the downward inclined groove structure 3, the upper end of each downward inclined groove 3.1 in the upper group of downward inclined grooves is located outside the outer shell, and the lower end extends into the electrode post through hole; the sealant extends upward along the lead alloy electrode post 1 and covers each downward inclined groove 3.1 located on the outside of the outer shell. In this way, the downward inclined groove 3.1 will not affect the sealant sealing the gap between the lead alloy electrode post 1 and the electrode post through hole; at the same time, it can effectively increase the contact area between the sealant and the electrode post, and increase the bonding strength between the two.

[0064] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A terminal post for a lead-acid battery, characterized in that, The lead alloy pole includes a pole screw hole at the end of the pole, and the copper core terminal includes a terminal screw and a copper terminal provided at one end of the terminal screw.

2. A terminal post for a lead-acid battery according to claim 1, characterized in that The lower inclined groove structure includes lower inclined grooves, which extend obliquely along the outer side surface of the lead alloy pole.

3. A terminal post for a lead-acid battery according to claim 2, characterized in that The upper and lower two groups of lower inclined groove groups include a plurality of the lower inclined grooves, and the lower inclined grooves in the same group are sequentially distributed circumferentially around the lead alloy pole.

4. A terminal post for a lead-acid battery according to claim 3, characterized in that The gap between the upper and lower two groups of lower inclined groove groups corresponds to the outer side surface of the lead alloy pole to form a smooth annular sealing surface, which cooperates with a sealing ring in a pole through hole on the shell of the lead-acid battery.

5. A terminal post for a lead-acid battery according to claim 2 or 3 or 4, characterised in that When the terminal pole for lead-acid batteries is applied in a lead-acid battery, the lead alloy pole passes through a pole through hole on the shell of the lead-acid battery, and the upper ends of some of the lower inclined grooves in the lower inclined groove structure are located outside the shell, and the lower ends extend into the pole through hole.

6. A terminal post for lead-acid batteries according to claim 1 or 2 or 3 or 4, characterized in that The upper side surface of the lead alloy pole is provided with an upper inclined groove structure, and the upper inclined groove structure includes upper inclined grooves that extend obliquely along the outer side surface of the lead alloy pole.

7. A terminal post for a lead-acid battery according to claim 6, characterized in that The upper inclined groove structure includes a plurality of the upper inclined grooves, and the upper inclined grooves are sequentially distributed circumferentially around the lead alloy pole.

8. A terminal post for a lead-acid battery as defined in claim 6, characterized in that The upper end of the upper inclined groove communicates with the upper end surface of the lead alloy pole.

9. A terminal post for lead-acid batteries according to claim 1 or 2 or 3 or 4, characterized in that, The lower end of the lead alloy pole is provided with a base, the outer surface of the copper core terminal is provided with a nickel plating layer, the pole screw hole is coaxially distributed with the lead alloy pole, the external screw hole is coaxially distributed with the terminal screw, and the outer side surface of the copper terminal is provided with an annular groove.

10. A lead-acid storage battery characterised in that, The terminal pole for lead-acid batteries includes any one of the terminal poles according to claims 1-9.

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