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CN-121983603-A - Zinc-manganese dry cell with novel sealing structure

CN121983603ACN 121983603 ACN121983603 ACN 121983603ACN-121983603-A

Abstract

The invention provides a zinc-manganese dry battery with a novel sealing structure, which comprises a zinc cylinder, a carbon rod and a positive electrode cap, wherein the zinc-manganese dry battery also comprises a sealing ring, the outer edge and the inner edge of the sealing ring are both coated with first elastic colloid, the first elastic colloid covers the lower surface of the sealing ring, the inner edge of the upper part of the zinc cylinder is coated with second elastic colloid, the lower part of the sealing ring is positioned at the inner side of the upper end of the zinc cylinder, the first elastic colloid positioned on the outer edge of the sealing ring is in interference fit and sealing with the second elastic colloid, the carbon rod vertically penetrates through an inner hole of the sealing ring, the outer edge of the upper part of the carbon rod is coated with third elastic colloid, the third elastic colloid is in interference fit and sealing with the first elastic colloid positioned on the inner edge of the sealing ring, and the positive electrode cap is fixedly sleeved outside the upper end of the carbon rod and is in contact with the positive electrode cap for conduction.

Inventors

  • WANG DONGXING

Assignees

  • 宁波丰银电池有限公司

Dates

Publication Date
20260505
Application Date
20251218

Claims (5)

  1. 1. The zinc-manganese dry battery with the novel sealing structure comprises a zinc cylinder (1), a carbon rod (2) and a positive electrode cap (3), and is characterized by further comprising a sealing ring (4), wherein a first elastic colloid (5) is coated on the outer edge and the inner edge of the sealing ring (4), the first elastic colloid (5) covers the lower surface of the sealing ring (4), a second elastic colloid (6) is coated on the inner edge of the upper part of the zinc cylinder (1), the lower part of the sealing ring (4) is positioned on the inner side of the upper end of the zinc cylinder (1), the first elastic colloid (5) and the second elastic colloid (6) which are positioned on the outer edge of the sealing ring (4) are in interference fit and seal, the carbon rod (2) vertically penetrates into an inner hole of the sealing ring (4), a third elastic colloid (7) is coated on the outer edge of the upper part of the carbon rod (2), the third elastic colloid (7) is in interference fit with the first elastic colloid (5) positioned on the inner edge of the sealing ring (4), and the positive electrode cap (3) is in contact with the positive electrode cap (3).
  2. 2. The zinc-manganese dry cell with the novel sealing structure as claimed in claim 1, wherein a first coating part (51) is formed on the first elastic colloid (5) positioned at the outer edge of the sealing ring (4), and the first coating part (51) is coated on the upper surface of the outer edge of the sealing ring (4).
  3. 3. The zinc-manganese dry cell with the novel sealing structure as claimed in claim 1, wherein a second coating part (52) is formed on the first elastic colloid (5) at the inner edge of the sealing ring (4), and the second coating part (52) is coated on the upper surface of the inner edge of the sealing ring (4).
  4. 4. The zinc-manganese dry cell with the novel sealing structure according to claim 1, wherein the middle part of the radial direction of the sealing ring (4) is provided with a ring-shaped protruding part (41), and the protruding part (41) protrudes out of the sealing ring (4) from bottom to top.
  5. 5. The zinc-manganese dry cell with the novel sealing structure according to claim 1, wherein an inward-turned annular curled edge (11) is arranged at the upper end of the zinc cylinder (1), and the annular curled edge (11) is abutted against the upper surface of the outer edge of the sealing ring (4).

Description

Zinc-manganese dry cell with novel sealing structure Technical Field The invention relates to the technical field of zinc-manganese dry batteries, in particular to a zinc-manganese dry battery with a novel sealing structure. Background The battery is a device for providing electric energy, the conventional zinc-manganese dry battery in the market comprises a zinc cylinder, isolation layer slurry paper, a positive electrode electric core, a positive electrode current collector carbon rod and a sealing ring, wherein in the production and manufacturing process of the battery, the zinc cylinder, the sealing ring arranged at the upper opening of the zinc cylinder, the carbon rod inserted into the sealing ring and glue at the joint part of each part form a sealing structure of the battery, but the sealing structure is influenced by the assembly process, material characteristics, battery requirements and the like, clearance fit is generally adopted between the sealing ring and the zinc cylinder, clearance is reduced or zero clearance is formed in other modes, the sealing ring and the carbon rod passing through the middle of the sealing ring are generally in interference fit, the sealing ring is generally made of PE material, and is influenced by the injection molding process and material properties, so that the radial dimension of the sealing ring is not completely consistent, an unequally spaced clearance is formed after the sealing ring is matched with the inner wall of the zinc cylinder, and the sealing is difficult, and the sealing between the carbon rod and the sealing ring is too large, so that the holes in the sealing ring are cracked, if the interference fit is not tight enough, the sealing performance is easy, and the battery is even the leakage is not caused due to the leakage. Disclosure of Invention The invention aims to solve the technical problem of providing a zinc-manganese dry battery with a novel sealing structure, which can effectively isolate the internal and external communication of the battery, avoid the problems of air leakage, electrical property reduction, liquid leakage and the like caused by poor sealing, ensure the discharge performance of the battery and ensure the service life of the battery. The invention provides a zinc-manganese dry battery with a novel sealing structure, which comprises a zinc cylinder, a carbon rod and a positive electrode cap, wherein the zinc-manganese dry battery also comprises a sealing ring, the outer edge and the inner edge of the sealing ring are respectively coated with a first elastic colloid, the first elastic colloid covers the lower surface of the sealing ring, the inner edge of the upper part of the zinc cylinder is coated with a second elastic colloid, the lower part of the sealing ring is positioned at the inner side of the upper end of the zinc cylinder, the first elastic colloid positioned on the outer edge of the sealing ring is in interference fit and sealing with the second elastic colloid, the carbon rod vertically penetrates through an inner hole of the sealing ring, the outer edge of the upper part of the carbon rod is coated with a third elastic colloid, the third elastic colloid is in interference fit and sealing with the first elastic colloid positioned on the inner edge of the sealing ring, and the positive electrode cap is fixedly connected to the outer part of the upper end of the carbon rod and is in contact with the positive electrode cap for electric conduction. By adopting the structure, the invention can realize reliable sealing of the gap between the sealing ring and the zinc cylinder after the first elastic colloid is in interference fit with the second elastic colloid, and can realize reliable sealing of the gap between the carbon rod and the sealing ring after the first elastic colloid is in interference fit with the third elastic colloid, thereby realizing effective sealing of the zinc-manganese dry battery, preventing the problems of air leakage, performance reduction, liquid leakage and the like of the zinc-manganese dry battery, ensuring the discharge performance of the battery and ensuring the service life of the battery. In one possible implementation manner, the first coating part is formed on the first elastic colloid at the outer edge of the sealing ring and is coated on the upper surface of the outer edge of the sealing ring, and by adopting the structure, the first coating part is coated on the upper surface of the outer edge of the sealing ring, so that the fixation firmness of the first elastic colloid and the outer edge of the sealing ring can be improved under the action of the first coating part, and the condition that the first elastic colloid is separated from the outer edge of the sealing ring is avoided. In one possible implementation mode, the second coating part is formed on the first elastic colloid at the inner edge of the sealing ring and is coated on the upper surface of the inner edge of the sealin