Battery

Abstract

The utility model discloses a battery which comprises an aluminum shell, a positioning hole is formed in the top of the aluminum shell, a negative pole is arranged at the position of the positioning hole, a riveting part is arranged on the negative pole, the negative pole is sequentially sleeved with lower plastic, a sealing ring, the aluminum shell, upper plastic and a steel ring, and a sealing structure is formed after the riveting part is turned over and riveted. A plurality of clamping structures are arranged between the steel ring and the upper plastic as well as between the upper plastic and the aluminum shell and are used for adjusting the torque between the negative pole 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 overturned and riveted, the strength of the riveting part is enhanced through the steel ring, the riveting part is matched with the upper plastic to form a corresponding clamping structure, and the upper plastic is matched with the aluminum shell to form a corresponding clamping structure, so that the torque between the negative pole and the aluminum shell can be effectively increased; therefore, the connection strength between the negative pole and the aluminum shell is enhanced, and the sealing performance and the strength of the battery are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery. Background Technology

[0002] A battery is a device that converts chemical energy into electrical energy. It contains an electrolyte solution and metal electrodes within a cup, tank, or other container or composite container to generate an electric current. It has a positive and a negative electrode. The main performance parameters of a battery are electromotive force, capacity, specific energy, and resistance. Using batteries as an energy source provides a stable voltage, stable current, and a long-term stable power supply, with minimal susceptibility to external influences. Batteries are simple, portable, easy to charge and discharge, unaffected by external climate and temperature, and offer stable and reliable performance, playing a significant role in various aspects of modern life.

[0003] Existing cylindrical batteries typically employ traditional welding techniques, resulting in certain defects in battery sealing and strength, particularly in the connection strength and sealing between the terminals and the aluminum casing. Utility Model Content

[0004] This invention provides a battery that can solve the problems of insufficient connection strength and sealing between the terminal portion and the aluminum shell mentioned in the background art.

[0005] A battery includes: an aluminum shell, a positioning hole on the top of the aluminum shell, a negative electrode post at the positioning hole, and a riveting part on the negative electrode post;

[0006] The negative electrode post is sequentially fitted with a lower plastic, a sealing ring, an aluminum shell, an upper plastic, and a steel ring, and forms a sealed structure after being riveted together by the riveting part;

[0007] Several snap-fit ​​structures are provided between the steel ring and the upper plastic, and between the upper plastic and the aluminum shell, for adjusting the torque between the negative electrode post and the aluminum shell.

[0008] Preferably, a number of positioning portions extend outward from the edge of the steel ring.

[0009] Preferably, the steel ring is provided with a plurality of downwardly protruding protrusions, and the positioning part is staggered with the protrusions.

[0010] Preferably, the upper plastic has a receiving groove, the steel ring is located in the receiving groove, and the receiving groove is radially provided with a plurality of positioning grooves that are adapted to the positioning part.

[0011] Preferably, the receiving groove is provided with a plurality of first slots that are adapted to the protrusion.

[0012] Preferably, the positioning part, the protrusion, and the positioning groove cooperate with the first slot to form a snap-fit ​​structure between the steel ring and the upper plastic.

[0013] Preferably, a plurality of second slots are formed on the top of the aluminum shell along the circumferential array of the positioning holes.

[0014] Preferably, the bottom of the upper plastic is provided with a positioning ring, the positioning ring is embedded in the positioning hole, and the outer diameter of the positioning ring is adapted to the inner diameter of the positioning hole.

[0015] Preferably, the positioning ring is radially connected with a plurality of locking blocks that are adapted to the second locking slot.

[0016] Preferably, the positioning hole, the second slot, the positioning ring, and the locking block cooperate to form a locking structure between the upper plastic and the aluminum shell.

[0017] The beneficial effects of this utility model are:

[0018] The battery's sealing performance is improved by the sealing structure formed by the riveting of the riveting part. The strength of the riveting part is further enhanced by the steel ring. The upper plastic forms a corresponding snap-fit ​​structure, and the upper plastic forms a corresponding snap-fit ​​structure with the aluminum shell. This can effectively increase the torque between the negative electrode post and the aluminum shell, thereby enhancing the connection strength between the negative electrode post and the aluminum shell, so as to effectively improve the battery's sealing performance and strength. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a battery provided by this utility model;

[0020] Figure 2 A cross-sectional view of a battery provided by this utility model;

[0021] Figure 3 An exploded view of a battery provided by this utility model;

[0022] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0024] Figure 6 for Figure 3 Schematic diagram of the structure of the central steel ring;

[0025] Figure 7 for Figure 3 Top view of Zhongshang Plastics;

[0026] Figure 8 for Figure 3 A bottom view of Zhongshang Plastics;

[0027] Figure 9 for Figure 3 Schematic diagram of the aluminum shell structure;

[0028] Figure 10 for Figure 3 Schematic diagram of the structure of the negative electrode post;

[0029] Figure 11 This is a schematic diagram of the negative electrode post in the prior art.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Steel ring; 101. Positioning part; 102. Protrusion; 2. Upper plastic; 201. Receiving groove; 202. Positioning groove; 203. First slot; 204. Positioning ring; 205. Locking block; 3. Negative electrode post; 301. Riveting part; 4. Sealing ring; 5. Lower plastic; 6. Negative electrode current collector; 7. Aluminum shell; 701. Positioning hole; 702. Second slot; 8. Positive electrode current collector; 9. Explosion-proof valve; 10. Base plate; 11. Sealing aluminum sheet; 12. Explosion-proof patch. Detailed Implementation

[0032] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0033] A battery is a device that converts chemical energy into electrical energy. It contains an electrolyte solution and metal electrodes within a cup, tank, or other container or composite container to generate an electric current. It has a positive and a negative electrode. The main performance parameters of a battery are electromotive force, capacity, specific energy, and resistance. Using batteries as an energy source provides a stable voltage, stable current, and a long-term stable power supply, with minimal susceptibility to external influences. Batteries are simple, portable, easy to charge and discharge, unaffected by external climate and temperature, and offer stable and reliable performance, playing a significant role in various aspects of modern life.

[0034] Existing cylindrical batteries typically employ traditional welding techniques, resulting in certain defects in battery sealing and strength, particularly in the connection strength and sealing between the terminals and the aluminum casing.

[0035] like Figures 1-3 As shown, this utility model proposes a battery, including: a battery body, an aluminum shell 7, a positioning hole 701 on the top of the aluminum shell 7, and a plurality of second slots 702 arranged in a circumferential array along the positioning hole 701 on the top of the aluminum shell 7.

[0036] like Figure 5As shown, the bottom of the aluminum shell 7 is through-shaped, and a substrate 10 is welded to the through-hole. A positive current collector 8 is disposed above the substrate 10 and is welded to the inner wall of the aluminum shell 7. An explosion-proof valve 9 is welded to the substrate 10, and an explosion-proof patch 12 is disposed below the explosion-proof valve 9 and is adhered to the bottom of the substrate 10. The substrate 10, the explosion-proof valve 9, and the explosion-proof patch 12 cooperate to form the positive electrode cover of the battery.

[0037] like Figure 4 , Figures 10-11 As shown, a negative electrode post 3 is provided at the positioning hole 701 on the top of the aluminum shell 7, and a negative current collector 6 is welded to the bottom of the negative electrode post 3. The negative electrode post 3 is provided with a riveting part 301. Compared with the negative electrode post in the prior art that does not have a riveting structure, the riveting part 301 of the negative electrode post 3 in this application can serve as a fixing structure to fix other components fitted onto the negative electrode post 3.

[0038] Specifically, the negative electrode post 3 is sequentially fitted with a lower plastic 5, a sealing ring 4, an aluminum shell 7, an upper plastic 2, and a steel ring 1, and then riveted together by the riveting part 301 to form a sealed structure. This sealed structure can improve the sealing performance of the battery and prevent leakage during use.

[0039] Several snap-fit ​​structures are provided between the steel ring 1 and the upper plastic 2, and between the upper plastic 2 and the aluminum shell 7, to adjust the torque between the negative electrode post 3 and the aluminum shell 7.

[0040] Specifically, such as Figures 6-7 As shown, several positioning portions 101 extend outward from the edge of the steel ring 1. The steel ring 1 is also provided with several downwardly protruding portions 102. The positioning portions 101 and the protruding portions 102 are arranged alternately.

[0041] The upper plastic 2 has a receiving groove 201, and the steel ring 1 is located inside the receiving groove 201, with the riveting part 301 of the negative terminal post 3 attached to the upper part of the steel ring 1. The receiving groove 201 has a plurality of positioning grooves 202 that are adapted to the positioning part 101 in the radial direction. The receiving groove 201 has a plurality of first locking grooves 203 that are adapted to the protrusion 102 in the downward direction. The positioning part 101, the protrusion 102, the positioning grooves 202 and the first locking grooves 203 cooperate to form a locking structure between the steel ring 1 and the upper plastic 2.

[0042] like Figures 8-9 As shown, a positioning ring 204 is also provided at the bottom of the upper plastic 2. The positioning ring 204 is embedded in the positioning hole 701, and the outer diameter of the positioning ring 204 is adapted to the inner diameter of the positioning hole 701. Several locking blocks 205 adapted to the second locking groove 702 are radially connected to the positioning ring 204. The positioning hole 701, the second locking groove 702, the positioning ring 204 and the locking blocks 205 cooperate to form a locking structure between the upper plastic 2 and the aluminum shell 7.

[0043] In this embodiment, the steel ring 1 not only strengthens the riveting part 301, but also forms a corresponding snap-fit ​​structure with the upper plastic 2 and the upper plastic 2 forms a corresponding snap-fit ​​structure with the aluminum shell 7, effectively increasing the torque between the negative electrode post 3 and the aluminum shell 7, thereby enhancing the connection strength between the negative electrode post 3 and the aluminum shell 7.

[0044] When assembling the battery, the negative electrode post 3 passes through the lower plastic 5 and the sealing ring 4 in sequence, and then the aluminum shell 7, the upper plastic 2 and the steel ring 1 are put on. After riveting by the riveting part 301, a sealed structure is formed. Finally, the negative electrode current collector 6 and the positive electrode current collector 8 are welded at the cell end. After the cell assembly is completed and the electrolyte is injected, the sealing aluminum sheet 11 is welded to the positive electrode cover plate to form a complete sealed cell.

[0045] Working principle: When assembling the battery, the negative terminal post 3 passes through the lower plastic 5 and the sealing ring 4 in sequence, and then the aluminum shell 7, the upper plastic 2 and the steel ring 1 are put on. After riveting by the riveting part 301, a sealed structure is formed. Finally, the negative current collector 6 and the positive current collector 8 are welded at the cell end. After the cell assembly is completed and the electrolyte is injected, the sealing aluminum sheet 11 is welded to the positive cover plate to form a complete sealed cell.

[0046] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A battery, characterized in that, include: An aluminum shell (7) has a positioning hole (701) on its top. A negative electrode post (3) is provided at the positioning hole (701). A riveting part (301) is provided on the negative electrode post (3). The negative electrode post (3) is sequentially fitted with a lower plastic (5), a sealing ring (4), an aluminum shell (7), an upper plastic (2), and a steel ring (1), and forms a sealed structure after being riveted by the riveting part (301); Several snap-fit ​​structures are provided between the steel ring (1) and the upper plastic (2), and between the upper plastic (2) and the aluminum shell (7), for adjusting the torque between the negative electrode post (3) and the aluminum shell (7).

2. The battery as described in claim 1, characterized in that, Several positioning portions (101) extend outward from the edge of the steel ring (1).

3. A battery as described in claim 2, characterized in that, The steel ring (1) is provided with a plurality of downwardly protruding protrusions (102), and the positioning part (101) is staggered with the protrusions (102).

4. A battery as described in claim 3, characterized in that, The upper plastic (2) has a receiving groove (201), the steel ring (1) is located in the receiving groove (201), and the receiving groove (201) has a plurality of positioning grooves (202) that are adapted to the positioning part (101) in the radial direction.

5. A battery as described in claim 4, characterized in that, The receiving groove (201) has several first slots (203) that are adapted to the protrusion (102) downward.

6. A battery as described in claim 5, characterized in that, The positioning part (101), the protrusion (102), the positioning groove (202) cooperate with the first slot (203) to form a snap-fit ​​structure between the steel ring (1) and the upper plastic (2).

7. A battery as described in claim 1, characterized in that, The top of the aluminum shell (7) has several second slots (702) arranged in a circumferential array along the positioning hole (701).

8. A battery as described in claim 7, characterized in that, The bottom of the upper plastic (2) is provided with a positioning ring (204), the positioning ring (204) is embedded in the positioning hole (701), and the outer diameter of the positioning ring (204) is adapted to the inner diameter of the positioning hole (701).

9. A battery as described in claim 8, characterized in that, The positioning ring (204) is radially connected to a plurality of card blocks (205) that are adapted to the second card slot (702).

10. A battery as described in claim 9, characterized in that, The positioning hole (701), the second slot (702), the positioning ring (204), and the locking block (205) cooperate to form a snap-fit ​​structure between the upper plastic (2) and the aluminum shell (7).

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