Energy storage lead-type battery internalization device

Abstract

The utility model relates to the battery production technical field, concretely relates to the energy storage lead wire type battery internal formation device. Including insulating cylinder, the electrically conductive cylinder is fixed in insulating cylinder, the electrically conductive cylinder has elasticity, the electrically conductive cylinder lower part is arc convex to the center direction and forms the convex part, the electrically conductive cylinder lower part circumference is evenly distributed and is set up with multiple slits, the slit penetrates the convex part, the insulating cylinder inner edge is fixed with rubber ring, and the rubber ring is located in the convex part and contacts the convex part, and the insulating cylinder below is fixed with the rubber ring of sealed connection in the insulating cylinder, and the rubber ring inboard lower part is processed with the guide cone surface, and the electrically conductive cylinder upper end is fixed with the terminal board, and the terminal board is connected with the lead wire electrically. Through the arc surface design of the electrically conductive cylinder convex part, the close adhesion is formed with the battery cylindrical pole, and the effective contact area is increased greatly, thereby reducing the contact internal resistance. This avoids the overheat, pole deformation and the risk of striking in the formation process, and improves the process safety.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to an internal formation device for energy storage lead-type batteries. Background Technology

[0002] Generally, energy storage batteries are designed with large capacities and high internal formation currents. Currently, the commonly used internal formation process for lead-type energy storage batteries in China uses alligator clips with wavy teeth to directly connect cylindrical terminals. However, this structure has the following problems in application: 1. The contact between the alligator clips and the cylindrical terminals is point contact, resulting in a small contact area and thus a high contact resistance. In this connection method, the contact area between the alligator clips and the cylindrical terminals depends on the number of teeth on the clips and the thickness of the alligator clip material. The small effective contact area of ​​the tiny contact points makes it easy for problems such as contact point overheating, terminal deformation, and even battery sparking to occur during the formation process; 2. Internally formed batteries require approximately 5-6 days of formation time. During prolonged charging and discharging, once the alligator clips come into contact with the electrolyte, corrosion will occur. The corrosion of the clips further reduces the effective contact area with the terminals, increases the internal formation resistance, and reduces formation efficiency. This not only increases production costs but also severely affects the terminal sealing structure, reducing product quality.

[0003] To address the aforementioned technical issues, patent document CN202797158U discloses an internal formation system for a lead-type energy storage battery, comprising battery terminals, clips, and leads. The lower part of the battery terminal is cylindrical, and the upper part is flat. The clips are flat-mouth clips, with the clip face clamping the flat part of the battery terminal. The clips are connected to each other via leads.

[0004] Patent document CN210576269U discloses an internal formation device for a lead-type energy storage battery, including battery terminals, clips, and leads. Limiting plates are provided on both sides of the battery terminals, and grooves are formed on the opposite surfaces of the two limiting plates. Slider blocks are provided on the relatively distant sides of the clips, and the two sliders are slidably connected within the grooves. A limiting rod is provided on one side of the clip, and the other end of the limiting rod overlaps with the other side of the clip. The clips hold the battery terminals. There are two clips, connected by the leads, and each clip is soldered to both ends of the leads. This technical solution solves the problems of easy misalignment and separation of the clips from the battery terminals, and the inability of the clips to be aligned properly.

[0005] Both of the above technical solutions require changing the shape of the battery terminals, thus increasing the production cost of the battery. Utility Model Content

[0006] The main objective of this invention is to provide an energy storage lead-type battery internal formation device that can improve the stability and contact area of ​​the connection with the battery terminals without changing the shape of the battery terminals.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] An internal formation device for a lead-type energy storage battery includes an insulating cylinder, inside which a conductive cylinder is fixed. The conductive cylinder is elastic, and its lower part is arc-shaped and protrudes towards its center to form a raised portion. Multiple slits are evenly distributed around the lower circumference of the conductive cylinder, and the slits penetrate the raised portion. A rubber ring is fixed to the inner edge of the insulating cylinder, and the rubber ring is located inside the raised portion and in contact with the raised portion. A rubber ring is fixed and sealed inside the insulating cylinder below the conductive cylinder. A guide cone surface is machined on the lower inner side of the rubber ring. A terminal block is fixed to the upper end of the conductive cylinder, and the terminal block is electrically connected to the lead wire.

[0009] Specifically, the protrusion has an arc surface on the side facing the center of the conductive cylinder, and the arc surface is concentric with the conductive cylinder.

[0010] Specifically, the conductive cylinder and the terminal block are integrally formed, and the lead wire is welded to the terminal block.

[0011] Specifically, the conductive cylinder is made of copper alloy.

[0012] Specifically, the insulating cylinder is made of engineering plastic, and the conductive cylinder is bonded and fixed inside the insulating cylinder.

[0013] Specifically, it also includes a stopper plate, which is sealed and inserted into the insulating cylinder above the conductive cylinder. The lead wire passes through the stopper plate and is sealed to the stopper plate.

[0014] Specifically, the outer edge of the plug plate is fixedly and sealed with an outer sealing ring, which is in sealing contact with the inner edge of the insulating cylinder. A circular hole is opened on the inner side of the plug plate, and an inner sealing ring is fixedly and sealed within the circular hole. A lead wire passes through the inner sealing ring and is in sealing contact with the inner sealing ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The arc-shaped design of the conductive cylinder protrusion ensures a tight fit with the cylindrical battery terminals, significantly increasing the effective contact area and reducing internal contact resistance. This avoids the risks of overheating, terminal deformation, and sparking during the formation process, thus improving process safety.

[0017] 2. The elastic design of the built-in rubber ring in the protrusion applies additional compressive force during clamping, ensuring a secure connection between the conductive cylinder and the electrode post. Simultaneously, the rubber ring assists in the recovery of the protrusion during disassembly, reducing plastic deformation, improving the device's fatigue resistance and reusability, and extending its overall lifespan.

[0018] 3. The device adopts a plug-in structure, which can be directly installed on the standard cylindrical terminal without changing the shape of the battery terminal. This simplifies the battery manufacturing process, reduces material processing and equipment modification costs, and improves production economy.

[0019] 4. By installing a rubber ring inside the insulating cylinder to seal the annular space between the electrode and the device, leaked electrolyte is effectively isolated; the design of adding a plug plate combined with inner and outer sealing rings ensures that the conductive cylinder is protected from acid corrosion. This avoids increased contact resistance and damage to the sealing structure caused by corrosion, ensuring battery formation efficiency and finished product reliability.

[0020] 5. The plug-in installation and disassembly design of the device simplifies the formation process, allowing for quick connection or separation without the need for complex tools. At the same time, the sealed structure reduces maintenance requirements and improves overall work efficiency and applicability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the connection between the device and the battery terminals.

[0022] Figure 2 This is a top view of the insulating cylinder.

[0023] Figure 3 for Figure 2 Sectional view along line AA.

[0024] Figure 4 for Figure 1 A magnified view of region B in the middle.

[0025] The components in the attached diagram are named as follows: 1. Battery, 2. Terminal post, 3. Insulating cylinder, 4. Lead wire, 5. Conductive cylinder, 6. Terminal block, 7. Protrusion, 8. Slit, 9. Arc surface, 10. Rubber ring, 11. Rubber ring, 12. Plug plate, 13. Outer sealing ring, 14. Inner sealing ring, 15. Guide cone surface. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1: Refer to Figures 1-4 As shown, the energy storage lead type battery internal formation device includes an insulating cylinder 3, and a conductive cylinder 5 is fixed inside the insulating cylinder 3. The insulating cylinder 3 is made of engineering plastic, and the conductive cylinder 5 is bonded and fixed inside the insulating cylinder 3.

[0028] The conductive cylinder 5 is made of copper alloy and is elastic. The lower part of the conductive cylinder 5 has an arc-shaped protrusion 7 towards its center. Multiple slits 8 are evenly distributed around the lower circumference of the conductive cylinder 5, and the slits 8 penetrate the protrusion 7. A rubber ring 10 is fixed to the inner edge of the insulating cylinder 3. The rubber ring 10 is located inside the protrusion 7 and contacts the protrusion 7. A rubber ring 11 is fixedly and sealed inside the insulating cylinder 3 below the conductive cylinder 5. A guide cone surface 15 is machined on the lower inner side of the rubber ring 11. A terminal block 6 is fixed to the upper end of the conductive cylinder 5. The conductive cylinder 5 and the terminal block 6 are integrally formed. The lead wire 4 is welded to the terminal block 6.

[0029] The protrusion 7 has an arc surface 9 on the side facing the center of the conductive cylinder 5, and the arc surface 9 is concentric with the conductive cylinder 5.

[0030] When this device is connected to the terminal 2 of battery 1, the insulating cylinder 3 and the conductive cylinder 5 are fitted onto the outside of the terminal 2 of battery 1. When the conductive cylinder 5 is fitted onto the outside of the terminal 2 of battery 1, the terminal 2 of battery 1 presses against the protrusion 7 and causes it to undergo elastic deformation. After the terminal 2 of battery 1 is located inside the protrusion 7, the protrusion 7 clamps the terminal 2 of battery 1, and the arc surface 9 is in contact with the outer edge of the terminal 2 of battery 1. At this time, the conductive cylinder 5 is electrically connected to the terminal 2 of battery 1, and then battery 1 can be internally formed.

[0031] By setting the arc surface 9, the contact area between the protrusion 7 and the battery 1 terminal 2 can be increased, which can prevent the terminal 2 from deforming due to overheating at the contact point between the terminal 2 and the protrusion 7, and can also prevent arcing at the contact point between the terminal 2 and the protrusion 7.

[0032] When the pole post 2 presses against the protrusion 7 and causes the protrusion 7 to deform, the rubber ring 10 is pressed by the protrusion 7. By setting the rubber ring 10, the pressing force of the protrusion 7 on the pole post 2 of the battery 1 can be increased, thereby improving the connection stability between the conductive cylinder 5 and the pole post 2 of the battery 1.

[0033] When the conductive cylinder 5 and the insulating cylinder 3 are removed from the battery 1 terminal 2, the elasticity of the rubber ring 10 helps the protrusion 7 to return to its original position, which can improve the service life of the conductive cylinder 5.

[0034] When the conductive cylinder 5 is connected to the terminal 2 of the battery 1, it can be directly inserted into the terminal 2 of the battery 1 without changing the shape of the terminal 2 of the battery 1, which can reduce the production cost of the battery 1. After the battery 1 has been internally formed, it is easy to separate the conductive cylinder 5 from the terminal 2 of the battery 1.

[0035] After the conductive cylinder 5 and the insulating cylinder 3 are fitted onto the terminal 2 of the battery 1, the rubber ring 11 can be fitted onto the terminal 2 of the battery 1, thereby sealing the annular space between the insulating cylinder 3 and the terminal 2 of the battery 1, preventing leaked acid from contacting the conductive cylinder 5 and causing corrosion.

[0036] The guide cone surface 15 provided on the rubber ring 11 facilitates the passage of the terminal post 2 of the battery 1 through the rubber ring 11.

[0037] Example 2: Based on Example 1, referring to... Figure 1 and Figure 4 As shown, it also includes a stopper plate 12, which is sealed and inserted into the insulating cylinder 3 above the conductive cylinder 5. A lead wire 4 passes through the stopper plate 12 and is sealed to the stopper plate 12.

[0038] An outer sealing ring 13 is fixedly and sealed to the outer edge of the plug plate 12. The outer sealing ring 13 is in sealing contact with the inner edge of the insulating cylinder 3. A circular hole is opened on the inner side of the plug plate 12. An inner sealing ring 14 is fixedly and sealed to the circular hole. The lead wire 4 passes through the inner sealing ring 14 and is in sealing contact with the inner sealing ring 14.

[0039] By setting a stopper plate 12, and providing an outer sealing ring 13 on the outer edge of the stopper plate 12, the stopper plate 12 is sealed to the insulating cylinder 3 through the outer sealing ring 13. The lead wire 4 is sealed to the stopper plate 12 through the inner sealing ring 14. After the stopper plate 12 is located inside the insulating cylinder 3, it can prevent leaked acid from entering the insulating cylinder 3 and corroding the conductive cylinder 5.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An internal formation device for an energy storage lead-type battery, comprising an insulating cylinder (3), characterized in that, An insulating cylinder (3) is fixed inside a conductive cylinder (5). The conductive cylinder (5) is elastic. The lower part of the conductive cylinder (5) is arc-shaped and protrudes towards its center to form a protrusion (7). Multiple slits (8) are evenly distributed around the lower circumference of the conductive cylinder (5). The slits (8) penetrate the protrusion (7). A rubber ring (10) is fixed on the inner edge of the insulating cylinder (3). The rubber ring (10) is located inside the protrusion (7) and contacts the protrusion (7). A rubber ring (11) is fixed and sealed inside the insulating cylinder (3) below the conductive cylinder (5). A guide cone surface (15) is machined on the lower inner side of the rubber ring (11). A terminal block (6) is fixed on the upper end of the conductive cylinder (5). The terminal block (6) is electrically connected to the lead wire (4).

2. The energy storage lead-type battery internal formation device according to claim 1, characterized in that, The protrusion (7) has an arc surface (9) on the side facing the center of the conductive cylinder (5), and the arc surface (9) is concentric with the conductive cylinder (5).

3. The energy storage lead-type battery internal formation device according to claim 1, characterized in that, The conductive cylinder (5) and the terminal block (6) are integrally formed, and the lead wire (4) is welded to the terminal block (6).

4. The energy storage lead-type battery internal formation device according to claim 1, characterized in that, The conductive cylinder (5) is made of copper alloy.

5. The energy storage lead-type battery internal formation device according to claim 1, characterized in that, The insulating cylinder (3) is made of engineering plastic, and the conductive cylinder (5) is bonded and fixed inside the insulating cylinder (3).

6. The energy storage lead-type battery internal formation device according to claim 1, characterized in that, It also includes a stopper plate (12), which is sealed and inserted into the insulating cylinder (3) above the conductive cylinder (5), and the lead wire (4) passes through the stopper plate (12) and is sealed to the stopper plate (12).

7. The energy storage lead-type battery internal formation device according to claim 6, characterized in that, The outer edge of the plug plate (12) is fixedly and sealed with an outer sealing ring (13). The outer sealing ring (13) is in sealing contact with the inner edge of the insulating cylinder (3). A circular hole is opened on the inner side of the plug plate (12). An inner sealing ring (14) is fixedly and sealed in the circular hole. The lead wire (4) passes through the inner sealing ring (14) and is in sealing contact with the inner sealing ring (14).

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