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CN-224232873-U - Improve and annotate confluence dish of liquid and welding yields

CN224232873UCN 224232873 UCN224232873 UCN 224232873UCN-224232873-U

Abstract

The utility model discloses a confluence plate for improving liquid injection and welding yield, which comprises a confluence plate main body, wherein the confluence plate main body is of a circular structure, a welding area is arranged on the confluence plate main body, the shape of the welding area is cross-shaped, and the welding area is concave relative to one side of the confluence plate main body. The welding area of the negative electrode current collecting disc is a central cross area, the convex surface is aligned to one side of the negative electrode of the battery cell, the tightness degree of a contact surface is increased, the problem of poor welding caused by pores existing in contact is solved, round holes with different sizes are formed in four non-welding areas, the concave surface is aligned to one side of the negative electrode of the battery cell, electrolyte can flow into the surface of the battery cell along the round holes during liquid injection, the problem of electrolyte residue on the surface of the current collecting disc is solved, and the non-welding area and the surface of the battery cell form a liquid-retaining area, so that the risk of vacuumizing electrolyte in the liquid injection process is reduced, and the liquid injection efficiency is improved.

Inventors

  • SI JIAN
  • SU LING
  • LI FANGYONG

Assignees

  • 上海懿烯电源科技有限公司

Dates

Publication Date
20260512
Application Date
20250508

Claims (5)

  1. 1. The confluence disc for improving liquid injection and welding yield comprises a confluence disc main body (1) and is characterized in that the confluence disc main body (1) is of a circular structure, a welding area (3) is arranged on the confluence disc main body (1), the shape of the welding area (3) is in a cross shape, and the welding area (3) is concave relative to one side of the confluence disc main body (1).
  2. 2. The confluence plate for improving liquid injection and welding yield according to claim 1, wherein the welding area (3) divides the confluence plate main body (1) into four areas, and each area is provided with a plurality of through holes (2).
  3. 3. The confluence disc for improving liquid injection and welding yield according to claim 2, wherein two through holes (2) are formed in each area of the confluence disc main body (1), the through holes (2) are round holes, and the diameter of an inner through hole (2) is smaller than that of an outer through hole (2).
  4. 4. The confluence disc for improving liquid injection and welding yield according to claim 1, wherein an outer ring (5) is arranged on the outer side of the confluence disc main body (1).
  5. 5. The confluence disc for improving liquid injection and welding yield according to claim 1, wherein an inner ring (4) is arranged at the center of a welding area (3) of the confluence disc main body (1).

Description

Improve and annotate confluence dish of liquid and welding yields Technical Field The utility model relates to the technical field of battery current collecting plates, in particular to a current collecting plate for improving the liquid injection and welding yield. Background The cylindrical battery comprises a shell, a pole group, a negative electrode current collecting disc and a negative electrode cover plate, wherein the shell is provided with a containing cavity for containing the pole group, the pole group is used for storing and releasing energy, and the negative electrode current collecting disc conducts the energy of the pole group to the outside. At present, a resistance welding or laser welding mode is generally adopted for the positive current collecting disc, but the current collecting disc is still limited by the contact area of the current collecting disc and the shell, and meanwhile, the welding yield cannot be improved. Therefore, we propose a confluence plate for improving the liquid injection and welding yield. Disclosure of utility model The utility model aims to provide a confluence plate for improving liquid injection and welding yield so as to solve the problems in the prior art. In order to achieve the above purpose, the utility model provides a confluence disc for improving liquid injection and welding yield, which comprises a confluence disc main body, wherein the confluence disc main body is of a circular structure, the confluence disc main body is provided with a welding area, the shape of the welding area is cross-shaped, and the welding area is concave relative to one side of the confluence disc main body. Preferably, the welding area divides the busbar body into four areas, each of which is provided with a plurality of through holes. Preferably, each area of the main body of the confluence disc is provided with two through holes, each through hole is a round hole, and the diameter of the inner through hole is smaller than that of the outer through hole. Preferably, an outer ring is provided on the outer side of the confluence plate body. Preferably, the busbar disc body is provided with an inner ring at the center of the welding area. Compared with the prior art, the utility model has the beneficial effects that: the main body of the busbar disc is provided with a welding area, the welding area is in a cross shape, the welding area is concave relative to one side of the main body of the busbar disc, the welding area of the cathode current collecting disc is a cross area in the center, and the convex surface is aligned with one side of the cathode of the battery cell, so that the tightness degree of a contact surface is increased, and the problem of poor welding caused by the existence of pores due to contact is solved. The electric core is characterized in that each area of the main body of the confluence disc is provided with two through holes, the through holes are round holes, the diameter of an inner through hole is smaller than that of an outer through hole, round holes with different sizes are formed in four non-welding areas, the concave surfaces of the round holes are aligned to one side of the negative electrode of the electric core, electrolyte can flow into the surface of the electric core along the round holes during liquid injection, the problem of electrolyte residue on the surface of the confluence disc is reduced, a liquid retaining area is formed between the non-welding area and the surface of the electric core, the risk that vacuum electrolyte is pumped out in the liquid injection process is reduced, and the liquid injection efficiency is improved. Drawings The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings: FIG. 1 is a schematic diagram of the structure of the present utility model; FIG. 2 is a schematic view of the rear view of the present utility model; fig. 3 is a front view of the present utility model. In the figure, 1, a confluence disc main body, 2, a through hole, 3, a welding area, 4, an inner ring, 5 and an outer ring. Detailed Description For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the uti