Cap assembly, battery and electronic equipment

Abstract

The utility model discloses a cap assembly, a battery and electronic equipment. The cap assembly comprises a first metal plate, a second metal plate and a conductor element, wherein the first metal plate is provided with a first through hole part penetrating through two side surfaces of the first metal plate; the second metal plate comprises a body part and a boss part, the boss part is arranged on one side face of the body part in a protruding mode, the second metal plate is in insulation connection with the first metal plate, and the boss part correspondingly penetrates through the first through hole part; the conductor element is arranged at the first through hole part, and the conductor element is connected with the boss part in an attached mode.

Description

Technical Field

[0001] This application relates to the technical field of energy storage devices, and more specifically, to a cap assembly, a battery, and an electronic device. Background Art

[0002] In recent years, with the development of technology, various electronic products have entered thousands of households and become necessities of people's lives. As the power source of electronic products, various performances of the battery are one of the important indicators for measuring the quality of electronic products.

[0003] A button battery is a commonly used battery, also known as a coin cell battery, which refers to a battery with an outer dimension like a small button; generally, it has a larger diameter and a thinner thickness. Due to its small volume, the battery is widely used in various microelectronic products; for example, it is often used in wearable electronic devices such as wireless earphones, sports watches, smart bracelets, and smart rings.

[0004] In the button batteries in the prior art, there are still areas for improvement in their structures; for example, the conductive components in the battery are not convenient for forming a conductive connection with the outside.

[0005] In view of this, it is necessary to propose a new technical solution to solve the above technical problems. Utility Model Content

[0006] An object of this application is to provide a new technical solution for a cap assembly, a battery, and an electronic device.

[0007] According to the first aspect of this application, a cap assembly is provided, and the cap assembly includes:

[0008] A first metal plate, the first metal plate is provided with a first through-hole portion penetrating through its two side surfaces;

[0009] A second metal plate, the second metal plate includes a body portion and a convex portion, the convex portion protrudes on one side surface of the body portion, the second metal plate is insulated and connected to the first metal plate, and the convex portion correspondingly penetrates through the first through-hole portion;

[0010] A conductor element, the conductor element is arranged at the first through-hole portion, and the conductor element is in fitting connection with the convex portion.

[0011] Optionally, the second metal plate is an aluminum metal plate, and the conductor element is a steel conductor element.

[0012] Optionally, the cross-sectional shape of the conductor element and the cross-sectional shape of the convex portion are both circular.

[0013] Optionally, a groove portion is formed between the body portion and the boss portion, and an annular explosion-proof film is provided in the groove portion.

[0014] Optionally, the bottom area of the conductor element is greater than or equal to four-fifths of the bottom area of the boss portion and less than or equal to the bottom area of the boss portion.

[0015] Optionally, the thickness of the conductor element is 0.05 - 0.3 mm.

[0016] Optionally, the conductor element is welded to the boss portion.

[0017] Optionally, the cap assembly further includes an insulating washer having a second through-hole portion. The insulating washer is disposed between the first metal plate and the second metal plate, and the second through-hole portion and the first through-hole portion are correspondingly disposed.

[0018] According to a second aspect of the present application, a battery is provided, and the battery includes the cap assembly as described in the first aspect.

[0019] According to a third aspect of the present application, an electronic device is provided, and the electronic device includes the battery as described in the second aspect.

[0020] In the cap assembly provided by the embodiments of the present application, a conductor element is connected to the boss portion of the second metal plate. After the cap assembly is mounted on the battery case, the conductor element is exposed outside the battery case, that is, the conductor element is disposed facing the outside of the battery case. The conductor element can facilitate contact conduction with the contacts of external devices, so as to form an electrical connection between the battery to which the cap assembly is applied and the external devices, ensuring the stability and safety of current transmission.

[0021] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. Description of the Drawings

[0022] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present application and, together with the description, are used to explain the principles of the present application.

[0023] Figure 1a is an exploded structural schematic diagram of a cap assembly according to an embodiment of the present application;

[0024] Figure 1b is a cross-sectional structural schematic diagram of a cap assembly according to an embodiment of the present application;

[0025] Figure 2 is a structural schematic diagram of a battery according to an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1. Cap assembly; 11. First metal plate; 110. First through hole portion; 12. Second metal plate; 121. Main body portion; 122. Boss portion; 120. Explosion-proof membrane; 13. Conductor element; 14. Insulating gasket; 140. Second through hole portion; 2. Shell. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0031] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0032] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] Reference Figures 1a to 1b As shown, according to an embodiment of the present application, a cap assembly is provided, the cap assembly comprising a first metal plate 11, a second metal plate 12 and a conductor element 13, the first metal plate 11 is provided with a first through hole portion 110 penetrating through two side surfaces thereof;

[0034] The second metal plate 12 includes a body portion 121 and a boss portion 122, wherein the boss portion 122 is protrudingly disposed on a side surface of the body portion 121, the second metal plate 12 is insulated and connected to the first metal plate 11, and the boss portion 122 is correspondingly disposed through the first through hole portion 110;

[0035] The conductor element 13 is disposed at the first through hole portion 110 , and the conductor element 13 is closely connected to the boss portion 122 .

[0036] The cap assembly provided by the embodiment of the present application mainly includes a first metal plate 11, a second metal plate 12, and a conductor element 13. The first metal plate 11 is a metal plate having a first through-hole portion 110 penetrating through its two sides. The second metal plate 12 includes a body portion 121 and a boss portion 122; the boss portion 122 protrudes from one side of the body portion 121, and the shape and size of the boss portion 122 match the shape and size of the first through-hole portion 110, so that the boss portion 122 can correspondingly pass through the first through-hole portion 110. The conductor element 13 is disposed at the first through-hole portion 110 and is in fitting connection with the boss portion 122.

[0037] After the cap assembly is installed on the battery housing, the conductor element 13 is exposed outside the battery housing, that is, the conductor element 13 is disposed facing the outside of the battery housing; the conductor element 13 can facilitate contact conduction with the contacts of external devices, so as to electrically connect the battery to which the cap assembly is applied to the external devices and ensure the stability and safety of current transmission.

[0038] Refer to Figures 1a to 1b As shown, in one embodiment, the second metal plate 12 is an aluminum metal plate, and the conductor element 13 is a steel conductor element.

[0039] In this specific example, the material of the second metal plate 12 is aluminum metal material; the aluminum material has the characteristics of good processing performance and light weight; the aluminum material has good processing performance and can be formed by one-time stretching; and the density of the aluminum material is small, so using aluminum to make the second metal plate 12 helps to reduce the weight of the cap assembly, and further reduces the overall weight of the entire battery. In addition, the aluminum material has good heat conduction performance, which helps the heat generated during long-term operation of the battery to dissipate quickly, ensuring the stability and safety of the battery. The aluminum material also has excellent anti-rust characteristics, can resist the erosion of various corrosion factors, and prolongs the service life of the battery.

[0040] The conductor element 13 is made of stainless steel material. Compared with the aluminum material, the stainless steel material has more excellent corrosion resistance and better electrical conductivity. The conductor element 13 has a smaller contact resistance compared with the second metal plate 12, and is more convenient to form contact electrical conduction with the contacts of external devices.

[0041] Optionally, the first metal plate 11 is a steel metal plate.

[0042] Refer to Figures 1a to 1b As shown, in one embodiment, the cross-sectional shape of the conductor element 13 and the cross-sectional shape of the boss portion 122 are both circular.

[0043] In this specific example, the cross-sectional shape of the conductor element 13 and the cross-sectional shape of the boss portion 122 are both formed into a circular shape, which can provide a larger contact area, facilitate increasing the contact stability and conductive efficiency between the battery to which the cap assembly is applied and other devices or chargers, and ensure that the current can be transmitted smoothly and safely. Moreover, neither the conductor element 13 nor the boss portion 122 includes a sharp corner structure, improving the usage safety of the battery to which the cap assembly is applied.

[0044] Referring to Figures 1a to 1b As shown, in one embodiment, a groove portion is formed between the body portion 121 and the boss portion 122, and an annular explosion-proof film 120 is provided in the groove portion.

[0045] In this specific example, a groove portion is formed between the body portion 121 and the boss portion 122, and an annular explosion-proof film 120 is provided in the groove portion. The function of the explosion-proof film 120 is that when the pressure inside the battery rises abnormally, it can quickly rupture and release the internal pressure, thereby preventing the battery from exploding and improving the usage safety of the battery.

[0046] Referring to Figures 1a to 1b As shown, in one embodiment, the bottom area of the conductor element 13 is greater than or equal to four-fifths of the bottom area of the boss portion 122, and the bottom area of the conductor element 13 is less than or equal to the bottom area of the boss portion 122.

[0047] If the bottom area of the conductor element 13 is too small, it cannot provide sufficient contact area, thus making it inconvenient to form contact conduction with the contacts of external devices. If the bottom area of the conductor element 13 is larger than the bottom area of the boss portion 122, the conductor element 13 will cover the position where the explosion-proof film 120 is located, thus affecting the rapid rupture of the explosion-proof film 120 when the internal pressure of the battery rises abnormally. Therefore, in this specific example, the bottom area of the conductor element 13 is greater than or equal to four-fifths of the bottom area of the boss portion 122, and the bottom area of the conductor element 13 is less than or equal to the bottom area of the boss portion 122. Optionally, the bottom area of the conductor element 13 is equal to the bottom area of the boss portion 122.

[0048] Referring to Figures 1a to 1b As shown, in one embodiment, the thickness of the conductor element 13 is 0.05 - 0.3 mm.

[0049] In this specific example, the thickness of the conductor element 13 is 0.05 - 0.3 mm. Such a thickness can ensure that the conductor element 13 has good electrical conductivity and mechanical strength, and at the same time, it will not cause assembly difficulties or cost increases due to the excessive thickness of the conductor element 13.

[0050] Referring to Figures 1a to 1bAs shown, in one embodiment, the conductor element 13 is welded to the boss portion 122.

[0051] In this specific example, the connection between the conductor element 13 and the boss portion 122 can be a welded connection; the welded connection has the advantages of firm connection, low resistance, corrosion resistance, etc., and can ensure the stable transmission of current between the two.

[0052] Refer to Figures 1a to 1b As shown, in one embodiment, the cap assembly further includes an insulating washer 14. The insulating washer 14 has a second through-hole portion 140. The insulating washer 14 is disposed between the first metal plate 11 and the second metal plate 12, and the second through-hole portion 140 and the first through-hole portion 110 are correspondingly disposed.

[0053] In this specific example, the cap assembly further includes an insulating washer 14. The insulating washer 14 has a second through-hole portion 140 and is disposed between the first metal plate 11 and the second metal plate 12; the second through-hole portion 140 and the first through-hole portion 110 are correspondingly disposed to ensure that the boss portion 122 can pass through smoothly. The function of the insulating washer 14 is to further increase the insulation performance between the first metal plate 11 and the second metal plate 12 and improve the safety of the cap assembly.

[0054] Optionally, when assembling the cap assembly, the conductor element 13 can be first welded to the boss portion 122, and then the second metal plate 12, the insulating washer 14 and the first metal plate 11 are assembled and connected by hot pressing. It is also possible to first assemble and connect the first metal plate 11, the second metal plate 12 and the insulating washer 14 by hot pressing, and then weld the conductor element 13 to the boss portion 122.

[0055] Refer to Figure 2 As shown, according to another embodiment of the present application, a battery is provided. The battery includes the cap assembly 1 as described above.

[0056] Since the battery provided by the embodiment of the present application includes the above-mentioned cap assembly 1, it can very conveniently form a stable contact conductive connection with the contacts of external devices, and has higher use stability and safety.

[0057] Further, the battery provided by the embodiment of the present application further includes a housing 2. The battery has a first pole and a second pole. The housing 2 has a closed end and an open end which are oppositely arranged; the cap assembly 1 is covered on the open end, and the first metal plate 11 is connected to the housing 2. The cap assembly 1 and the housing 2 enclose a receiving space, and the battery cell is arranged in the receiving space; the housing 2 and the first metal plate 11 are configured as the first pole of the battery, and the conductor element 13 is configured as the second pole of the battery. For example, the first pole is the positive pole, and the second pole is the negative pole.

[0058] According to still another embodiment of the present application, an electronic device is provided, and the electronic device includes the battery as described above.

[0059] The differences between the above embodiments are mainly described. As long as the different optimization features between the embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, it will not be elaborated here.

[0060] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A cap assembly, characterized in that: The cap assembly comprises: A first metal plate (11), wherein the first metal plate (11) is provided with a first through hole (110) penetrating two side surfaces thereof; a second metal plate (12), the second metal plate (12) comprising a main body portion (121) and a boss portion (122), the boss portion (122) being protrudingly arranged on a side surface of the main body portion (121), the second metal plate (12) being insulated and connected to the first metal plate (11), and the boss portion (122) being correspondingly arranged to penetrate the first through hole portion (110); A conductor element (13), wherein the conductor element (13) is arranged at the first through hole portion (110), and the conductor element (13) is fitted and connected to the boss portion (122).

2. The cap assembly according to claim 1, characterized in that: The second metal plate (12) is an aluminum metal plate, and the conductor element (13) is a steel conductor element.

3. The cap assembly according to claim 1, characterized in that: The cross-sectional shape of the conductor element (13) and the cross-sectional shape of the boss portion (122) are both circular.

4. The cap assembly according to claim 1 or 3, characterized in that: A groove portion is formed between the main body portion (121) and the boss portion (122), and the groove portion is provided with an annular explosion-proof membrane (120).

5. The cap assembly according to claim 4, characterized in that: The bottom area of ​​the conductor element (13) is greater than or equal to four fifths of the bottom area of ​​the boss portion (122), and the bottom area of ​​the conductor element (13) is less than or equal to the bottom area of ​​the boss portion (122).

6. The cap assembly according to claim 1, characterized in that: The thickness of the conductor element (13) is 0.05-0.3 mm.

7. The cap assembly according to claim 1 or 2, characterized in that: The conductor element (13) is connected to the boss portion (122) by welding.

8. The cap assembly according to claim 1, characterized in that: The cap assembly further comprises an insulating gasket (14), wherein the insulating gasket (14) has a second through hole portion (140), and the insulating gasket (14) is arranged between the first metal plate (11) and the second metal plate (12), and the second through hole portion (140) and the first through hole portion (110) are arranged correspondingly.

9. A battery, characterized in that: The battery comprises a cap assembly (1) according to any one of claims 1-8.

10. An electronic device, characterized in that: The electronic device comprises the battery as claimed in claim 9.

Images