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CN-224204218-U - Battery cell

CN224204218UCN 224204218 UCN224204218 UCN 224204218UCN-224204218-U

Abstract

The utility model discloses a battery, which comprises an aluminum shell, wherein a positioning hole is formed in the top of the aluminum shell, a negative electrode post is arranged at the positioning hole, a riveting part is arranged on the negative electrode post, a lower plastic, a sealing ring, the aluminum shell, an upper plastic and a steel ring are sleeved on the negative electrode post in sequence, a sealing structure is formed after the riveting part is turned and riveted, and a plurality of clamping structures are arranged between the steel ring and the upper plastic and between the upper plastic and the aluminum shell and used for adjusting torque between the negative electrode post and the aluminum shell. According to the battery, the sealing performance of the battery can be improved through the sealing structure formed after the riveting part is turned and riveted, the strength of the riveting part is reinforced through the steel ring, the corresponding clamping structure is formed by matching with plastic with an aluminum shell, the torque between the negative electrode pole and the aluminum shell can be effectively increased, and therefore the connection strength between the negative electrode pole and the aluminum shell is enhanced, and the effective improvement of the battery in tightness and strength is achieved.

Inventors

  • SUN WEN

Assignees

  • 合肥力翔电池科技有限责任公司

Dates

Publication Date
20260505
Application Date
20250519

Claims (10)

  1. 1. The battery is characterized by comprising an aluminum shell (7), wherein a positioning hole (701) is formed in the top of the aluminum shell (7), a negative electrode pole (3) is arranged at the positioning hole (701), and a riveting part (301) is arranged on the negative electrode pole (3); The negative electrode post (3) is sequentially sleeved with a lower plastic (5), a sealing ring (4), the aluminum shell (7), an upper plastic (2) and a steel ring (1), and a sealing structure is formed after the riveting part (301) is turned and riveted; And a plurality of clamping structures are arranged between the steel ring (1) and the upper plastic (2) and between the upper plastic (2) and the aluminum shell (7) and used for adjusting the torque between the negative pole (3) and the aluminum shell (7).
  2. 2. A battery according to claim 1, characterized in that the rim of the rim (1) extends outwardly with a number of positioning portions (101).
  3. 3. A battery according to claim 2, wherein the steel rim (1) is provided with a plurality of downwardly protruding protrusions (102), and the positioning portions (101) are arranged in a staggered manner with respect to the protrusions (102).
  4. 4. A battery according to claim 3, wherein the upper plastic (2) is provided with a containing groove (201), the steel ring (1) is located in the containing groove (201), and the containing groove (201) is radially provided with a plurality of positioning grooves (202) adapted to the positioning parts (101).
  5. 5. A battery according to claim 4, wherein the receiving recess (201) is provided with a plurality of first clamping recesses (203) adapted to the protruding portions (102).
  6. 6. A battery according to claim 5, wherein the positioning portion (101), the protruding portion (102), the positioning groove (202) and the first clamping groove (203) cooperate to form a clamping structure between the steel ring (1) and the upper plastic (2).
  7. 7. A battery according to claim 1, characterized in that the top of the aluminium casing (7) is provided with a plurality of second clamping grooves (702) along the circumferential array of the positioning holes (701).
  8. 8. A battery according to claim 7, wherein a positioning ring (204) is arranged at the bottom of the upper plastic (2), the positioning ring (204) is embedded into the positioning hole (701), and the outer diameter of the positioning ring (204) is matched with the inner diameter of the positioning hole (701).
  9. 9. A battery according to claim 8, wherein the positioning ring (204) is radially connected with a plurality of clamping blocks (205) adapted to the second clamping grooves (702).
  10. 10. A battery according to claim 9, wherein the positioning hole (701), the second clamping groove (702), the positioning ring (204) and the clamping block (205) cooperate to form a clamping structure between the upper plastic (2) and the aluminum housing (7).

Description

Battery cell Technical Field The utility model relates to the technical field of batteries, in particular to a battery. Background A battery refers to a device that converts chemical energy into electrical energy in a cup, tank, or other container or portion of a composite container that contains an electrolyte solution and metal electrodes to generate an electrical current. Has a positive electrode and a negative electrode. The performance parameters of the battery are mainly electromotive force, capacity, specific energy and resistance. The battery is used as an energy source, the current which has stable voltage, stable current, long-time stable power supply and little influence from the outside can be obtained, the battery is simple, the carrying is convenient, the charging and discharging operation is simple and easy to implement, the influence from the outside climate and the temperature is avoided, the performance is stable and reliable, and the battery plays a great role in various aspects in the life of the modern society. The conventional cylindrical battery generally adopts a conventional welding technology, so that certain defects exist in terms of sealability and strength of the battery, particularly in terms of connection strength and sealability between a terminal portion and an aluminum case. Disclosure of utility model The utility model provides a battery which can solve the problem of insufficient connection strength and tightness between a pole part and an aluminum shell in the background art. A battery comprises an aluminum shell, wherein a positioning hole is formed in the top of the aluminum shell, a negative electrode post is arranged at the positioning hole, and a riveting part is arranged on the negative electrode post; The cathode post is sequentially sleeved with a lower plastic, a sealing ring, the aluminum shell, an upper plastic and a steel ring, and a sealing structure is formed after the riveting part is turned and riveted; And a plurality of clamping structures are arranged between the steel ring and the upper plastic and between the upper plastic and the aluminum shell and used for adjusting the torque between the negative pole and the aluminum shell. Preferably, the edge of the steel ring is extended with a plurality of positioning parts outwards. Preferably, the steel ring is provided with a plurality of protruding parts protruding downwards, and the positioning parts and the protruding parts are arranged in a staggered manner. Preferably, the upper plastic is provided with a containing groove, the steel ring is positioned in the containing groove, and the containing groove is radially provided with a plurality of positioning grooves matched with the positioning parts. Preferably, the accommodating groove is provided with a plurality of first clamping grooves matched with the protruding parts downwards. Preferably, the positioning part, the protruding part and the positioning groove are matched with the first clamping groove to form a clamping structure between the steel ring and the upper plastic. Preferably, a plurality of second clamping grooves are formed in the top of the aluminum shell along the circumferential array of the positioning holes. Preferably, a positioning ring is arranged at the bottom of the upper plastic, the positioning ring is embedded into the positioning hole, and the outer diameter of the positioning ring is matched with the inner diameter of the positioning hole. Preferably, the positioning ring is radially connected with a plurality of clamping blocks matched with the second clamping grooves. Preferably, the positioning hole, the second clamping groove, the positioning ring and the clamping block are matched to form a clamping structure between the upper plastic and the aluminum shell. The utility model has the beneficial effects that: According to the battery, the sealing performance of the battery can be improved through the sealing structure formed after the riveting part is turned and riveted, the strength of the riveting part is reinforced through the steel ring, the corresponding clamping structure is formed by matching with plastic with an aluminum shell, the torque between the negative electrode pole and the aluminum shell can be effectively increased, and therefore the connection strength between the negative electrode pole and the aluminum shell is enhanced, and the effective improvement of the battery in tightness and strength is achieved. Drawings Fig. 1 is a schematic structural view of a battery according to the present utility model; Fig. 2 is a cross-sectional view of a battery provided by the present utility model; fig. 3 is an exploded view of a battery according to the present utility model; FIG. 4 is an enlarged view of FIG. 2 at A; FIG. 5 is an enlarged view at B in FIG. 2; FIG. 6 is a schematic view of the steel rim of FIG. 3; FIG. 7 is a top view of the upper plastic of FIG. 3; FIG. 8 is a bottom view of the upper plastic