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CN-224204307-U - Positive electrode current collecting disc of cylindrical nickel-zinc battery

CN224204307UCN 224204307 UCN224204307 UCN 224204307UCN-224204307-U

Abstract

The utility model discloses a positive electrode current collecting disc of a cylindrical nickel-zinc battery, in particular to the technical field of positive electrode current collecting discs, which comprises a top plate, a current collecting disc main body and a pole lug, wherein a separation table is fixed at the bottom end of the top plate, the bottom end of the separation table is fixedly provided with a current collecting disc main body, the bottom end of the current collecting disc main body is fixedly provided with a pole lug, and the central position of the bottom end of the pole lug is provided with a flow guiding component. According to the utility model, the bottom tube and the baffle are arranged, when electrolyte is injected along the liquid injection holes in the pole, the electrolyte can flow into the battery along the liquid discharge holes symmetrically distributed on the outer side wall of the bottom tube, the baffle at the bottom can assist the electrolyte to disperse to the periphery, so that the time of absorbing alkaline electrolyte by the battery core can be prolonged, meanwhile, the baffle can prevent the alkaline electrolyte from directly reaching the bottom of the battery through the cavity in the middle of the winding core, thus the electrolyte waste and the shortage of the liquid absorption capacity of the battery core are caused, and the auxiliary dispersion function of the positive current collecting disc on the electrolyte is realized.

Inventors

  • WANG BIN
  • LI XIAN
  • ZHANG YUZHAN
  • JIANG XIUJUAN

Assignees

  • 东莞超霸电池有限公司深圳创新中心

Dates

Publication Date
20260505
Application Date
20250430

Claims (8)

  1. 1. The positive electrode current collecting disc of the cylindrical nickel-zinc battery comprises a top plate (1), a current collecting disc main body (10) and a lug (11), and is characterized in that a separation table (8) is fixed at the bottom end of the top plate (1), a connecting pipe (7) is fixed at the central position of the bottom end of the top plate (1), an insulating pad (9) is arranged on the outer side of the connecting pipe (7), the current collecting disc main body (10) is fixed at the bottom end of the separation table (8), the lug (11) is fixed at the bottom end of the current collecting disc main body (10), and a flow guiding assembly is arranged at the central position of the bottom end of the lug (11); The flow guide assembly comprises a central groove (14), a bottom pipe (15), a baffle (16) and a liquid discharge hole (17), wherein the central groove (14) is formed in the central position of the bottom end of the pole lug (11), the bottom pipe (15) is arranged on the inner side of the central groove (14), the top end of the bottom pipe (15) is fixedly connected with the bottom end of the collecting disc main body (10), the baffle (16) is fixed at the bottom end of the bottom pipe (15), and the liquid discharge hole (17) is formed in the bottom end of the outer side wall of the bottom pipe (15).
  2. 2. The positive electrode current collecting plate of the cylindrical nickel-zinc battery according to claim 1, wherein a pole column (2) is fixed at the central position of the top end of the top plate (1), a liquid injection hole (3) is formed in the pole column (2) in a penetrating mode, a mounting sleeve (4) is arranged on the outer side of the pole column (2), a welding table (5) is fixed at the top end of the mounting sleeve (4), and an arc-shaped conducting plate (6) is fixed at the central position of the bottom end of the welding table (5).
  3. 3. The positive electrode current collecting plate of the cylindrical nickel-zinc battery according to claim 2, wherein external threads are arranged on the outer side wall of the pole (2), internal threads are arranged in the mounting sleeve (4), and the pole (2) is connected with the mounting sleeve (4) through threads.
  4. 4. The positive electrode current collecting plate of the cylindrical nickel-zinc battery according to claim 1, wherein an auxiliary groove (12) is formed in the surface of the bottom end of the tab (11), and a hydrophobic organic coating (13) is arranged at the bottom end of the auxiliary groove (12).
  5. 5. The positive electrode current collecting plate of a cylindrical nickel-zinc battery according to claim 4, wherein a plurality of auxiliary grooves (12) are formed in the surface of the bottom end of each tab (11), and the auxiliary grooves (12) are distributed in a ring shape.
  6. 6. The positive electrode current collecting plate of the cylindrical nickel-zinc battery according to claim 1, wherein a plurality of liquid discharge holes (17) are formed at the bottom end of the outer side wall of the bottom tube (15), and the liquid discharge holes (17) are symmetrically distributed.
  7. 7. The positive electrode current collecting plate of the cylindrical nickel-zinc battery according to claim 1, wherein an insulating sleeve (18) is arranged on the outer sides of the top plate (1), the separation table (8), the current collecting plate main body (10) and the electrode lugs (11), a first limiting piece (19) is fixed at the bottom end of the inner side wall of the insulating sleeve (18), an anti-slip boss (20) is fixed at the inner side wall of the insulating sleeve (18), and a second limiting piece (21) is fixed at the top end of the inner side wall of the insulating sleeve (18).
  8. 8. The positive electrode current collecting plate of the cylindrical nickel-zinc battery according to claim 1, wherein an auxiliary hole (22) is formed in the bottom end of the tab (11), a buffer cavity (23) is formed in the current collecting plate main body (10), a connecting hole (24) is formed in the bottom end of the buffer cavity (23), the bottom end of the connecting hole (24) extends to the inside of the auxiliary hole (22), a rupture disc (25) is fixed in the connecting hole (24), and a blasting groove (26) is formed in the surface of the rupture disc (25).

Description

Positive electrode current collecting disc of cylindrical nickel-zinc battery Technical Field The utility model relates to the technical field of positive electrode current collecting plates, in particular to a positive electrode current collecting plate of a cylindrical nickel-zinc battery. Background The current collecting disc is a main body part of the positive current collecting disc and is also a connection basis of a contact piece and a wiring column, the contact piece is used as an important component for connecting the positive electrode piece and the current collecting disc, the performance and the structural design of the contact piece directly influence the conductivity of the positive electrode piece and the service life of a battery, and the wiring column is an output port of the positive current collecting disc and is mainly responsible for conducting output of the battery; The injection quality of the electrolyte is critical to the performance of the rechargeable battery, when the alkaline electrolyte is injected into the cylindrical nickel-zinc battery core, the center of the battery core is inevitably provided with a cavity with the diameter of 5-6 mm and the geometric shapes such as a round shape or a regular hexagon shape due to the influence of a winding needle, and the alkaline electrolyte generally directly enters a current collecting disc at the bottom of the battery core through the middle cavity, so that the problem of liquid accumulation at the bottom of the battery is caused, and the liquid absorption amount of the battery core is possibly influenced; There is therefore a need for a positive current collector plate for a cylindrical nickel zinc cell that addresses the above-described problems. Disclosure of utility model The utility model aims to provide a positive electrode current collecting disc of a cylindrical nickel-zinc battery, which solves the problem that alkaline electrolyte is inconvenient to inject in the background art. The positive electrode current collecting disc of the cylindrical nickel zinc battery comprises a top plate, a current collecting disc main body and a pole lug, wherein a separation table is fixed at the bottom end of the top plate, a connecting pipe is fixed at the central position of the bottom end of the top plate, an insulating pad is arranged on the outer side of the connecting pipe, the current collecting disc main body is fixed at the bottom end of the separation table, the pole lug is fixed at the bottom end of the current collecting disc main body, a flow guiding assembly is arranged at the central position of the bottom end of the pole lug, the flow guiding assembly comprises a central groove, a bottom pipe, a baffle and a liquid draining hole, the central groove is arranged at the central position of the bottom end of the pole lug, a bottom pipe is arranged on the inner side of the central groove, the top end of the bottom pipe is fixedly connected with the bottom end of the current collecting disc main body, the baffle is fixed at the bottom end of the bottom pipe, and the liquid draining hole is arranged at the bottom end of the outer side wall of the bottom pipe. As a further technical scheme of the utility model, a pole is fixed at the central position of the top end of the top plate, a liquid injection hole is formed in the pole in a penetrating manner, a mounting sleeve is arranged on the outer side of the pole, a welding table is fixed at the top end of the mounting sleeve, and an arc-shaped conducting plate is fixed at the central position of the bottom end of the welding table. As a further technical scheme of the utility model, the outer side wall of the pole is provided with external threads, the inside of the mounting sleeve is provided with internal threads, and the pole is connected with the mounting sleeve through threads. As a further technical scheme of the utility model, the surface of the bottom end of the tab is provided with an auxiliary groove, and the bottom end of the auxiliary groove is provided with a hydrophobic organic coating. As a further technical scheme of the utility model, a plurality of auxiliary grooves are formed in the surface of the bottom end of the tab, and the auxiliary grooves are distributed in a ring shape. As a further technical scheme of the utility model, a plurality of liquid discharge holes are arranged at the bottom end of the outer side wall of the bottom pipe, and the liquid discharge holes are symmetrically distributed. As a further technical scheme of the utility model, the outer sides of the top plate, the separation table, the current collecting disc main body and the pole lugs are provided with insulating sleeves, the bottom ends of the inner side walls of the insulating sleeves are fixed with first limiting sheets, the inner side walls of the insulating sleeves are fixed with anti-slip bosses, and the top ends of the inner side walls of the insulating sleeves are fixed with second