Positive collector plate of cylindrical nickel-zinc battery

Abstract

The utility model discloses an anode current collecting disc of a cylindrical nickel-zinc battery, and particularly relates to the technical field of anode current collecting discs, the anode current collecting disc comprises a top plate, a current collecting disc main body and a tab, a partition table is fixed at the bottom end of the top plate, the current collecting disc main body is fixed at the bottom end of the partition table, and the tab is fixed at the bottom end of the current collecting disc main body. And a flow guide assembly is arranged at the central position of the bottom end of the tab. Through the arrangement of the bottom tube and the baffle plate, electrolyte can flow into the battery along the liquid discharge holes symmetrically distributed on the outer side wall of the bottom tube when being injected along the liquid injection hole in the pole, and the baffle plate positioned at the bottom can assist the electrolyte to be dispersed all around, so that the time that the alkaline electrolyte is absorbed by a battery cell can be prolonged, and meanwhile, the service life of the battery cell is prolonged. The baffle plate can prevent the alkaline electrolyte from directly reaching the bottom of the battery through the cavity in the middle of the roll core, so that the electrolyte is prevented from being wasted, the liquid absorption amount of the battery core is not enough, and the auxiliary dispersion function of the positive collector plate on the electrolyte is realized.

Description

Technical Field

[0001] This utility model relates to the field of positive electrode current collector technology, specifically a positive electrode current collector for a cylindrical nickel-zinc battery. Background Technology

[0002] The current collector is the main part of the positive current collector and the connection basis for the contact piece and the terminal. As an important component connecting the positive electrode piece and the current collector, the performance and structural design of the contact piece directly affect the conductivity of the positive electrode piece and the life of the battery. The terminal is the output port of the positive current collector and is mainly responsible for the conductive output of the battery.

[0003] The quality of electrolyte injection is crucial to the performance of rechargeable batteries. When injecting alkaline electrolyte into cylindrical nickel-zinc cells, due to the influence of the winding needle, there will inevitably be a cavity in the center of the battery core. Its diameter can be as high as 5 to 6 millimeters, and it is in the shape of a circle or regular hexagon. The alkaline electrolyte usually enters directly into the current collector at the bottom of the cell through the central cavity, which not only causes the problem of liquid accumulation at the bottom of the battery, but may also affect the liquid absorption of the cell.

[0004] Therefore, a cylindrical nickel-zinc battery positive electrode current collector is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a positive electrode current collector for a cylindrical nickel-zinc battery to solve the problem mentioned in the background art that alkaline electrolyte is inconvenient to inject.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positive electrode current collector for a cylindrical nickel-zinc battery, comprising a top plate, a current collector body, and an electrode tab. A partition is fixed to the bottom end of the top plate, and a connecting pipe is fixed to the center of the bottom end of the top plate. An insulating pad is provided on the outside of the connecting pipe. The current collector body is fixed to the bottom end of the partition, and an electrode tab is fixed to the bottom end of the current collector body. A flow guiding component is provided at the center of the bottom end of the electrode tab. The flow guiding component includes a central groove, a bottom tube, a baffle, and a drain hole. A central groove is provided at the center of the bottom end of the electrode tab, and a bottom tube is provided on the inner side of the central groove. The top end of the bottom tube is fixedly connected to the bottom end of the current collector body, and a baffle is fixed to the bottom end of the bottom tube. A drain hole is provided at the bottom end of the outer wall of the bottom tube.

[0007] As a further technical solution of this utility model, an electrode post is fixed at the center of the top of the top plate, an injection hole is provided through the inside of the electrode post, an installation sleeve is provided on the outside of the electrode post, a welding station is fixed at the top of the installation sleeve, and an arc-shaped conductive sheet is fixed at the center of the bottom of the welding station.

[0008] As a further technical solution of this utility model, the outer wall of the pole post is provided with external threads, the inside of the mounting sleeve is provided with internal threads, and the pole post and the mounting sleeve are connected by threads.

[0009] As a further technical solution of this utility model, an auxiliary groove is provided on the surface of the bottom end of the electrode tab, and a hydrophobic organic coating is provided at the bottom end of the auxiliary groove.

[0010] As a further technical solution of this utility model, a plurality of auxiliary grooves are provided on the surface of the bottom end of the electrode tab, and the plurality of auxiliary grooves are arranged in a ring.

[0011] As a further technical solution of this utility model, a plurality of drainage holes are provided at the bottom end of the outer wall of the bottom tube, and the plurality of drainage holes are symmetrically distributed.

[0012] As a further technical solution of this utility model, an insulating sleeve is provided on the outer side of the top plate, partition, collector plate body and electrode ear, a first limiting piece is fixed at the bottom end of the inner side wall of the insulating sleeve, an anti-slip protrusion is fixed on the inner side wall of the insulating sleeve, and a second limiting piece is fixed at the top end of the inner side wall of the insulating sleeve.

[0013] As a further technical solution of this utility model, the bottom end of the electrode tab is provided with an auxiliary hole, the inside of the main body of the collector plate is provided with a buffer cavity, the bottom end of the buffer cavity is provided with a connecting hole, the bottom end of the connecting hole extends into the inside of the auxiliary hole, a rupture disc is fixed inside the connecting hole, and a rupture groove is provided on the surface of the rupture disc.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a bottom tube and a baffle, the bottom tube is located at the bottom end of the current collector body and at the center of the electrode tab. It is connected to the connecting tube and the electrode post. When the electrolyte is injected through the injection hole inside the electrode post, it can flow into the battery through the drainage holes symmetrically distributed on the outer wall of the bottom tube. The baffle at the bottom can help disperse the electrolyte in all directions, which can prolong the time for the alkaline electrolyte to be absorbed by the cell. At the same time, the baffle can prevent the alkaline electrolyte from reaching the bottom of the battery through the cavity in the middle of the core, which would cause waste of electrolyte and insufficient electrolyte absorption by the cell. This realizes the auxiliary dispersion function of the positive electrode current collector for the electrolyte.

[0015] With an installation sleeve, a welding station, and an arc-shaped conductive plate, the pole is located at the center of the top of the top plate. In use, it can be used on the outside with the help of the threaded installation sleeve. The welding station can be installed and used with the help of the installation sleeve. The connecting pipe on the bottom side of the welding station is used to better connect with the pole. The welding station can be used for welding at the positive electrode. If the welding is not successful, it will only damage the welding station. The welding station can be replaced and used. This realizes the protection function during the welding process of the positive electrode current collector.

[0016] By setting auxiliary grooves and a hydrophobic organic coating, multiple sets of auxiliary grooves are set on the surface of the electrode tab to form a micro-nano structure. The hydrophobic organic coating is used to assist in the adhesion of the electrode tab, which can effectively prevent electrolyte residue from remaining on the surface of the current collector and prevent alkaline residue from adhering to the surface of the electrode tab and causing corrosion. This achieves the anti-corrosion function of the positive electrode current collector electrode tab. Attached Figure Description

[0017] Figure 1 This is a frontal cross-sectional view of the present invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 3 This is a front view cross-sectional structural diagram of the top plate of this utility model;

[0020] Figure 4 This is a front view cross-sectional structural diagram of the main body of the collector plate of this utility model;

[0021] Figure 5 For the present utility model Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Top plate; 2. Electrode post; 3. Injection hole; 4. Mounting sleeve; 5. Welding platform; 6. Arc-shaped conductive sheet; 7. Connecting pipe; 8. Spacer; 9. Insulating pad; 10. Collector body; 11. Electrode lug; 12. Auxiliary groove; 13. Hydrophobic organic coating; 14. Center groove; 15. Bottom pipe; 16. Baffle; 17. Drain hole; 18. Insulating sleeve; 19. First limiting piece; 20. Anti-slip boss; 21. Second limiting piece; 22. Auxiliary hole; 23. Buffer chamber; 24. Connecting hole; 25. Rupture disc; 26. Rupture groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5An embodiment of this utility model is provided: a positive electrode current collector of a cylindrical nickel-zinc battery, including a top plate 1, a current collector body 10 and an electrode tab 11. An electrode post 2 is fixed at the center of the top of the top plate 1. An injection hole 3 is provided through the inside of the electrode post 2. An installation sleeve 4 is provided on the outside of the electrode post 2. An external thread is provided on the outer wall of the electrode post 2. An internal thread is provided on the inside of the installation sleeve 4. The electrode post 2 and the installation sleeve 4 are connected by threads. A welding platform 5 is fixed at the top of the installation sleeve 4. An arc-shaped conductive sheet 6 is fixed at the center of the bottom of the welding platform 5.

[0025] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, during use, the mounting sleeve 4 at the bottom of the welding station 5 can be fitted onto the outside of the terminal post 2 with the help of the threaded connection. The arc-shaped conductive plate 6 on the bottom side of the welding station 5 contacts the terminal post 2 when it moves down, which helps the welding station 5 to contact the terminal post 2 better. The welding station 5 is used for welding at the positive terminal of the battery.

[0026] A partition 8 is fixed at the bottom of the top plate 1. A connecting pipe 7 is fixed at the center of the bottom of the top plate 1. An insulating pad 9 is provided on the outside of the connecting pipe 7. A collector plate body 10 is fixed at the bottom of the partition 8. An electrode 11 is fixed at the bottom of the collector plate body 10. An auxiliary groove 12 is provided on the surface of the bottom of the electrode 11. Several auxiliary grooves 12 are provided on the surface of the bottom of the electrode 11. The several auxiliary grooves 12 are arranged in a ring. A hydrophobic organic coating 13 is provided on the bottom of the auxiliary groove 12.

[0027] Specifically, such as Figure 1 and Figure 4 As shown, during use, the injection hole 3 inside the electrode post 2 can be used for alkaline electrolyte injection. Under the assistance of negative pressure, the electrolyte can enter the bottom tube 15 through the injection hole 3 and the connecting pipe 7, and finally be discharged through the drain hole 17. The baffle 16 located at the bottom of the bottom tube 15 can be used to disperse the electrolyte, which can prolong the time for the alkaline electrolyte to be absorbed by the cell. At the same time, it can also prevent the alkaline electrolyte from reaching the bottom of the battery through the cavity in the middle of the core, which would cause waste of electrolyte and insufficient electrolyte absorption by the cell.

[0028] A flow guiding assembly is provided at the center of the bottom end of the tab 11. The flow guiding assembly includes a central groove 14, a bottom tube 15, a baffle 16, and a drain hole 17. A central groove 14 is provided at the center of the bottom end of the tab 11. A bottom tube 15 is provided on the inner side of the central groove 14. The top end of the bottom tube 15 is fixedly connected to the bottom end of the main body 10 of the collecting plate. A baffle 16 is fixed to the bottom end of the bottom tube 15. A drain hole 17 is provided at the bottom end of the outer wall of the bottom tube 15. Several drain holes 17 are provided at the bottom end of the outer wall of the bottom tube 15, and the several drain holes 17 are symmetrically distributed. Top plate 1, partition 8, and collecting plate 17 are provided. An insulating sleeve 18 is provided on the outer side of the main body 10 and the tab 11. A first limiting piece 19 is fixed at the bottom of the inner wall of the insulating sleeve 18. An anti-slip boss 20 is fixed on the inner wall of the insulating sleeve 18. A second limiting piece 21 is fixed at the top of the inner wall of the insulating sleeve 18. An auxiliary hole 22 is provided at the bottom of the tab 11. A buffer cavity 23 is provided inside the main body 10 of the current collector. A connecting hole 24 is provided at the bottom of the buffer cavity 23. The bottom of the connecting hole 24 extends into the interior of the auxiliary hole 22. A rupture disc 25 is fixed inside the connecting hole 24. A rupture groove 26 is provided on the surface of the rupture disc 25.

[0029] Specifically, such as Figure 1 , Figure 4 and Figure 5 As shown, during use, multiple sets of auxiliary grooves 12 are located on the bottom surface of the tab 11, forming a micro-nano structure for the hydrophobic organic coating 13 to adhere to. The hydrophobic organic coating 13 can prevent alkaline electrolyte from adhering to the surface of the tab 11 and causing corrosion of the tab 11.

[0030] Working principle: During use, the electrode post 2 is located at the center of the top of the top plate 1, and is connected to the connecting pipe 7 and the bottom pipe 15 through the injection hole 3. During use, the alkaline electrolyte can be drawn into the battery through the injection hole 3 by negative pressure. During injection, the alkaline electrolyte can flow into the battery through the drainage holes 17 symmetrically distributed on the outer wall of the bottom pipe 15. The baffle 16 located at the bottom can help disperse the electrolyte in all directions, which can prolong the time for the alkaline electrolyte to be absorbed by the cell. At the same time, the baffle 16 can prevent the alkaline electrolyte from reaching the bottom of the battery through the cavity in the middle of the core, which would cause electrolyte waste and insufficient electrolyte absorption by the cell. The multiple sets of tabs 11 at the bottom position... Multiple auxiliary grooves 12 are provided on the surface to form a micro-nano structure for the hydrophobic organic coating 13 to adhere. The hydrophobic organic coating 13 can effectively prevent electrolyte residue from remaining on the surface of the current collector and prevent alkaline residue from adhering to the surface of the tab 11 and causing corrosion of the tab 11. The pole 2 is used as the positive electrode. When welding is required, the mounting sleeve 4 at the bottom of the welding station 5 can be fitted onto the outside of the pole 2 with the help of the threaded engagement. The arc-shaped conductive sheet 6 on the bottom side of the welding station 5 contacts the pole 2 when it moves down, which helps the welding station 5 to better contact the pole 2. The welding station 5 is used for welding at the positive electrode of the battery to prevent welding errors from affecting the overall use.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A positive electrode current collector for a cylindrical nickel-zinc battery, comprising a top plate (1), a current collector body (10), and an electrode tab (11), characterized in that: A partition (8) is fixed at the bottom end of the top plate (1), a connecting pipe (7) is fixed at the center of the bottom end of the top plate (1), an insulating pad (9) is provided on the outside of the connecting pipe (7), a collector plate body (10) is fixed at the bottom end of the partition (8), an electrode (11) is fixed at the bottom end of the collector plate body (10), and a flow guiding component is provided at the center of the bottom end of the electrode (11). The flow guiding assembly includes a central groove (14), a bottom tube (15), a baffle (16), and a drain hole (17). The central groove (14) is provided at the center of the bottom end of the electrode (11). The bottom tube (15) is provided on the inner side of the central groove (14). The top end of the bottom tube (15) is fixedly connected to the bottom end of the main body (10) of the collecting plate. The baffle (16) is fixed at the bottom end of the bottom tube (15). The drain hole (17) is provided at the bottom end of the outer wall of the bottom tube (15).

2. The positive electrode current collector of a cylindrical nickel-zinc battery according to claim 1, characterized in that: A pole post (2) is fixed at the center of the top of the top plate (1). An injection hole (3) is provided through the inside of the pole post (2). An installation sleeve (4) is provided on the outside of the pole post (2). A welding station (5) is fixed at the top of the installation sleeve (4). An arc-shaped conductive sheet (6) is fixed at the center of the bottom of the welding station (5).

3. The positive electrode current collector of a cylindrical nickel-zinc battery according to claim 2, characterized in that: The outer wall of the pole post (2) is provided with external threads, and the inside of the mounting sleeve (4) is provided with internal threads. The pole post (2) and the mounting sleeve (4) are connected by threads.

4. The positive electrode current collector of a cylindrical nickel-zinc battery according to claim 1, characterized in that: An auxiliary groove (12) is provided on the surface of the bottom end of the tab (11), and a hydrophobic organic coating (13) is provided on the bottom end of the auxiliary groove (12).

5. The positive electrode current collector of a cylindrical nickel-zinc battery according to claim 4, characterized in that: The auxiliary grooves (12) are provided on the surface of the bottom end of the tab (11), and the auxiliary grooves (12) are arranged in a ring.

6. The positive electrode current collector of a cylindrical nickel-zinc battery according to claim 1, characterized in that: Several drainage holes (17) are provided at the bottom end of the outer wall of the bottom tube (15), and the drainage holes (17) are symmetrically distributed.

7. The positive electrode current collector of a cylindrical nickel-zinc battery according to claim 1, characterized in that: An insulating sleeve (18) is provided on the outer side of the top plate (1), partition (8), collector plate body (10) and electrode (11). A first limiting piece (19) is fixed at the bottom of the inner wall of the insulating sleeve (18), an anti-slip boss (20) is fixed on the inner wall of the insulating sleeve (18), and a second limiting piece (21) is fixed at the top of the inner wall of the insulating sleeve (18).

8. The positive electrode current collector of a cylindrical nickel-zinc battery according to claim 1, characterized in that: The bottom end of the electrode (11) is provided with an auxiliary hole (22), the inside of the main body (10) of the collector plate is provided with a buffer cavity (23), the bottom end of the buffer cavity (23) is provided with a connecting hole (24), the bottom end of the connecting hole (24) extends into the inside of the auxiliary hole (22), a rupture disc (25) is fixed inside the connecting hole (24), and a rupture groove (26) is provided on the surface of the rupture disc (25).

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