A cylindrical battery with a novel tab connection structure

Abstract

This utility model discloses a cylindrical battery with a novel tab connection structure, including a battery body. Inside the battery body is a cell, which includes a positive electrode, a first separator, a negative electrode, and a second separator. The positive electrode, first separator, negative electrode, and second separator are stacked and wound. Protective sleeves are fixedly connected to one side of the top of the positive electrode and one side of the bottom of the negative electrode. Tabs are fixedly connected to the inner wall of the protective sleeves. The protective sleeves include an anti-corrosion layer, a buffer layer, and a conductive layer. An anti-collision mechanism is installed on the surface of the battery body, comprising two rubber rings, two metal rings, and several metal strips. This cylindrical battery with a novel tab connection structure provides a protective structure at the connection between the tabs and the electrode, preventing damage and ensuring normal battery use. The anti-collision mechanism also reduces collision damage between the battery and external objects.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a cylindrical battery with a novel tab connection structure. Background Technology

[0002] A battery is a device that converts chemical energy into electrical energy, used to provide power to various electronic devices.

[0003] However, existing cylindrical batteries have the following drawbacks:

[0004] The connection between the tabs and the electrode plates of existing cylindrical batteries lacks a protective structure, making them easily damaged and affecting the normal use of the battery.

[0005] Existing cylindrical batteries lack impact protection structures on their surfaces, resulting in poor safety.

[0006] Considering the above, a cylindrical battery with a novel tab connection structure is proposed to solve the aforementioned problems. Utility Model Content

[0007] The purpose of this utility model is to provide a cylindrical battery with a novel tab connection structure, in order to solve the problems mentioned in the background art, such as the lack of a protective structure at the connection between the tab and the electrode of the existing cylindrical battery, which makes it easy to be damaged and affect the normal use of the battery, and the lack of anti-collision protection structure on the surface of the cylindrical battery, resulting in poor safety.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a cylindrical battery with a novel tab connection structure, comprising a battery body, wherein a cell is disposed inside the battery body, the cell comprising a positive electrode, a first separator, a negative electrode, and a second separator, the positive electrode, the first separator, the negative electrode, and the second separator being stacked and wound, a protective sleeve being fixedly connected to one side of the top of the positive electrode and one side of the bottom of the negative electrode, tabs being fixedly connected to the inner wall of the protective sleeve, the protective sleeve comprising an anti-corrosion layer, a buffer layer, and a conductive layer, and an anti-collision mechanism being installed on the surface of the battery body, the anti-collision mechanism comprising two rubber rings, two metal rings, and several metal strips.

[0009] When using a cylindrical battery with a novel tab connection structure according to this technical solution, a protective structure is provided at the connection between the tab and the electrode plate, which is not easily damaged and ensures the normal use of the battery. In addition, an anti-collision mechanism is provided to reduce collision damage between the battery and external objects.

[0010] In a preferred embodiment of this invention, a buffer layer is fixedly connected to the inner wall of the anti-corrosion layer, and a conductive layer is fixedly connected to the inner wall of the buffer layer. The protective sleeve improves the protection and conductivity at the connection between the electrode tab and the electrode plate.

[0011] In a preferred embodiment of this invention, two rubber rings are fixedly connected to the top and bottom of the battery body, respectively. Metal rings are fixedly connected to the surfaces of both rubber rings, and several metal strips are fixedly connected between the two metal rings. The frame structure formed by the metal rings and metal strips makes the battery less prone to deformation when impacted by external objects.

[0012] In a preferred embodiment of this invention, two reinforcing ribs are fixed between the positive electrode and the protective sleeve, and between the negative electrode and the protective sleeve. These reinforcing ribs enhance the connection strength between the electrode and the tab.

[0013] In a preferred embodiment of this invention, a heat-conducting layer is fixedly connected to the middle of the battery body. The heat-conducting layer improves heat transfer efficiency.

[0014] In a preferred embodiment of this invention, an annular heat sink is fixedly connected to the surface of the thermally conductive layer. The annular heat sink helps to dissipate heat quickly.

[0015] As a preferred embodiment of this invention, a forked rib is fixedly connected between two adjacent metal strips. The forked rib further improves the structural strength of the metal strips.

[0016] In a preferred embodiment of this invention, a film is fixedly connected to the surface of the electrode tab. The film on the electrode tab serves as electrical insulation to prevent short circuits.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By providing a protective sleeve at the connection between the tab and the electrode of the cylindrical battery, the anti-corrosion layer can effectively prevent oxidation and corrosion on the contact surface between the tab and the electrode, the buffer layer can alleviate stress changes caused by thermal expansion, vibration and impact, and improve the reliability of the connection. The conductive layer can reduce resistance and improve current transmission efficiency, and the reinforcing ribs can improve the connection strength between the tab and the electrode, thereby avoiding the situation where the connection between the tab and the electrode is easily damaged and affects the normal use of the battery.

[0019] 2. By setting an anti-collision mechanism on the surface of the cylindrical battery, using a frame structure formed by two metal rings and multiple metal strips, the battery is less likely to be deformed or damaged after being hit by external objects. In addition, the rubber ring can buffer the impact force, reduce damage to the battery body, and improve safety. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 This is a plan view of the present invention after it has been unfolded.

[0022] Figure 3 This is a partial plan view of the present invention;

[0023] Figure 4 This is a partial perspective view of the present invention.

[0024] In the diagram: 1. Battery body; 2. Cell; 201. Positive electrode; 202. Separator 1; 203. Negative electrode; 204. Separator 2; 3. Tab; 4. Film; 5. Protective sleeve; 501. Anti-corrosion layer; 502. Buffer layer; 503. Conductive layer; 6. Reinforcing rib; 7. Thermal conductive layer; 8. Annular heat sink; 9. Anti-collision mechanism; 901. Rubber ring; 902. Metal ring; 903. Metal strip; 10. Forked rib. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a cylindrical battery with a novel tab connection structure, including a battery body 1. The battery body 1 has a cell 2 inside, and the cell 2 includes a positive electrode 201, a first separator 202, a negative electrode 203, and a second separator 204. The positive electrode 201, the first separator 202, the negative electrode 203, and the second separator 204 are stacked and wound. A protective sleeve 5 is fixedly connected to one side of the top of the positive electrode 201 and one side of the bottom of the negative electrode 203 to provide protection. The inner wall of the protective sleeve 5 is fixedly connected to a tab 3. The protective sleeve 5 includes an anti-corrosion layer 501, a buffer layer 502, and a conductive layer 503. An anti-collision mechanism 9 is installed on the surface of the battery body 1. The anti-collision mechanism 9 includes two rubber rings 901, two metal rings 902, and several metal strips 903 to provide collision protection.

[0027] In use, a protective sleeve 5 is provided at the connection between the cylindrical battery tab 3 and the electrode plate to prevent the connection from being easily damaged and affecting the normal use of the battery. An anti-collision mechanism 9 is provided on the surface of the cylindrical battery to reduce the damage to the battery body 1 when it collides with external objects and improve safety.

[0028] A buffer layer 502 is fixedly connected to the inner wall of the anti-corrosion layer 501, and a conductive layer 503 is fixedly connected to the inner wall of the buffer layer 502 to improve the protective effect and conductivity. Two reinforcing ribs 6 are fixed between the positive electrode 201 and the protective sleeve 5 and between the negative electrode 203 and the protective sleeve 5 to improve the structural strength. A film 4 is fixedly connected to the surface of the electrode tab 3 to provide insulation.

[0029] In use, the anti-corrosion layer 501 in the protective sleeve 5 can effectively prevent oxidation and corrosion on the contact surface between the tab 3 and the electrode. The buffer layer 502 can alleviate stress changes caused by thermal expansion, vibration and impact, and improve the reliability of the connection. The conductive layer 503 can reduce resistance and improve current transmission efficiency. The reinforcing rib 6 is set to improve the connection strength between the tab 3 and the electrode plate, making it less prone to breakage. The film 4 is set to play the role of electrical insulation and short circuit prevention.

[0030] Two rubber rings 901 are fixedly connected to the top and bottom of the battery body 1 respectively, serving as a buffer. Metal rings 902 are fixedly connected to the surface of each of the two rubber rings 901. Several metal strips 903 are fixedly connected between the two metal rings 902. Forked ribs 10 are fixedly connected between two adjacent metal strips 903 to improve structural strength. A heat-conducting layer 7 is fixedly connected to the middle of the battery body 1. A ring-shaped heat sink 8 is fixedly connected to the surface of the heat-conducting layer 7 to improve heat dissipation performance.

[0031] In use, by setting an anti-collision mechanism 9 on the surface of the cylindrical battery, and using the frame structure formed by two metal rings 902, multiple metal strips 903 and forked ribs 10, the battery is less likely to be deformed or damaged after being hit by external objects. The rubber ring 901 can buffer the impact force of the collision, reducing the damage and impact on the battery body 1. The graphene thermal conductive layer 7 facilitates the conduction of the heat generated by the cylindrical battery during operation to the annular heat sink 8 for dissipation, enhancing the heat dissipation effect.

[0032] In practical use, this utility model discloses a cylindrical battery with a novel tab connection structure. A protective sleeve 5 is provided at the connection point between the tab 3 and the electrode. The zinc anti-corrosion layer 501 effectively prevents oxidation and corrosion on the contact surface between the tab 3 and the electrode. The conductive rubber buffer layer 502 alleviates stress changes caused by thermal expansion, vibration, and impact, improving connection reliability. The silver conductive layer 503 reduces resistance and improves current transmission efficiency. Reinforcing ribs 6 enhance the connection strength between the tab 3 and the electrode, thus preventing damage at the connection point and ensuring normal battery operation. An anti-collision mechanism 9 is provided on the surface of the cylindrical battery. The frame structure formed by two metal rings 902 and multiple metal strips 903 prevents deformation and damage after impact. The rubber rings 901 buffer the impact force, reducing damage to the battery body 1 and improving safety.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cylindrical battery with a novel tab connection structure, comprising a battery main body (1), characterized in that: The battery body (1) is provided with a cell (2) inside. The cell (2) includes a positive electrode (201), a first separator (202), a negative electrode (203), and a second separator (204). The positive electrode (201), the first separator (202), the negative electrode (203), and the second separator (204) are stacked and wound. A protective sleeve (5) is fixedly connected to one side of the top of the positive electrode (201) and one side of the bottom of the negative electrode (203). A tab (3) is fixedly connected to the inner wall of the protective sleeve (5). The protective sleeve (5) includes an anti-corrosion layer (501), a buffer layer (502), and a conductive layer (503). An anti-collision mechanism (9) is installed on the surface of the battery body (1). The anti-collision mechanism (9) includes two rubber rings (901), two metal rings (902), and several metal strips (903).

2. The cylindrical battery with the novel tab connection structure according to claim 1, characterized in that: The inner wall of the anti-corrosion layer (501) is fixedly connected to a buffer layer (502), and the inner wall of the buffer layer (502) is fixedly connected to a conductive layer (503).

3. A cylindrical battery with a novel tab connection structure according to claim 1, characterized in that: The two rubber rings (901) are fixedly connected to the top and bottom of the battery body (1), respectively. Metal rings (902) are fixedly connected to the surface of the two rubber rings (901), and several metal strips (903) are fixedly connected between the two metal rings (902).

4. A cylindrical battery with a novel tab connection structure according to claim 1, characterized in that: Two reinforcing ribs (6) are fixed between the positive electrode (201) and the protective sleeve (5) and between the negative electrode (203) and the protective sleeve (5).

5. A cylindrical battery with a novel tab connection structure according to claim 1, characterized in that: A heat-conducting layer (7) is fixedly connected to the middle of the battery body (1).

6. A cylindrical battery with a novel tab connection structure according to claim 5, characterized in that: An annular heat sink (8) is fixedly connected to the surface of the heat-conducting layer (7).

7. A cylindrical battery with a novel tab connection structure according to claim 3, characterized in that: A forked rib (10) is fixedly connected between two adjacent metal strips (903).

8. A cylindrical battery with a novel tab connection structure according to claim 1, characterized in that: A film (4) is fixedly connected to the surface of the electrode (3).

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