Cover plate assembly, shell and battery

Abstract

The utility model discloses a cover plate assembly, a shell and a battery, the cover plate assembly comprises a top cover plate, a pole body and an insulating part, and the top cover plate is provided with a communicating hole; the pole body is located in the communicating hole, and a gap is formed between the pole body and the communicating hole; the insulating part covers the pole body and the top cover plate and extends into the gap, so that the pole body is connected with the top cover plate in an insulating manner. According to the utility model, the top cover plate and the pole body are provided with the insulating parts, and the insulating parts extend in the gap, so that an insulating effect can be achieved between the top cover plate and the pole body, and polar insulating and sealing effects on the battery are achieved; moreover, the insulating part also covers the pole body and the top cover plate, so that the insulating and sealing areas are increased, the polar insulating and sealing effects on the battery are increased, and the safety performance of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a cover plate assembly, a shell and a battery. Background Art

[0002] In the power supply solutions for microelectronic devices, steel shell button batteries are widely used due to their excellent sealing performance and reliability. This type of battery can provide stable power supply in a changing environment and meet the power needs of the device. With the development of science and technology, electronic devices tend to be smaller and more high-performance, which requires their power components, especially steel shell button batteries, to not only maintain the original excellent characteristics, but also further improve the structural stability and electrical performance.

[0003] In the traditional steel shell button battery design, the pole is usually set at the top of the battery shell and connected to the inside of the battery through the pole hole. There is a certain gap between the pole and the pole hole to ensure the insulation between the battery shell and the pole. However, this design has obvious defects. Since there is a gap between the outer edge of the pole and the wall of the pole hole, if conductive debris falls into the gap, it is easy to cause a short circuit in the battery, affecting the use and safety performance of the battery. Utility Model Content

[0004] The embodiments of the utility model provide a cover plate assembly, a housing and a battery to solve the problem that the battery is easily short-circuited due to the gap between the pole and the pole hole, thereby achieving the effect of improving the safety performance of the battery.

[0005] Specifically, the utility model provides a cover plate assembly, including a top cover plate, a pole body and an insulating member, wherein a connecting hole is provided on the top cover plate; the pole body is located in the connecting hole, and a gap is formed between the pole body and the connecting hole; the insulating member covers the pole body and the top cover plate, and extends into the gap to insulate the pole body from the top cover plate.

[0006] Optionally, the insulating member includes a first insulating sheet and an insulating ring, wherein the insulating ring is arranged on one side of the first insulating sheet; the insulating ring is located in the gap, and the first insulating sheet covers the pole body and the top cover plate.

[0007] Optionally, one end of the pole body is connected to a first connecting plate, the first connecting plate is located on a side of the top cover plate away from the first insulating sheet, and the first connecting plate is overlapped on the top cover plate;

[0008] The insulating member further includes a second insulating sheet, which is disposed between the first connecting plate and the top cover plate, and is connected to the insulating ring.

[0009] Optionally, the cover plate assembly further includes a connecting plate, which is arranged on a side of the pole body away from the first connecting plate and is located between the first insulating sheet and the pole body;

[0010] The connecting sheet is a nickel sheet; or, the connecting sheet is a stainless steel sheet, and a nickel layer is plated on the side of the stainless steel sheet away from the pole body.

[0011] Optionally, the top cover plate includes a first straight portion, a second straight portion and a bent portion, the first straight portion and the second straight portion are both annular, and two ends of the bent portion are respectively connected to the inner edge of the first straight portion and the outer edge of the second straight portion; the bent portion is cylindrical, and the inner wall of the bent portion is the hole wall of the communicating hole, and the pole body is overlapped on the second straight portion;

[0012] The insulating member further includes a third insulating sheet, which is disposed between the second straight portion and the pole body and is connected to the insulating ring.

[0013] Optionally, a connecting protrusion is provided on a side of the pole body facing away from the first insulating sheet, and the connecting protrusion passes through the connecting hole.

[0014] Optionally, the cover plate assembly further includes a reinforcing sheet, which is arranged on a side of the first insulating sheet away from the pole body, and a projection of the reinforcing sheet on the top cover plate covers the gap;

[0015] The thickness of the top cover plate is greater than the thickness of the first insulating sheet.

[0016] The utility model also provides a shell, comprising a shell and a cover plate assembly as described in any one of the above items, wherein the shell has a receiving cavity with an opening at one end, and the top cover plate is installed on the shell and blocks the opening.

[0017] The utility model also provides a battery, comprising a pole core and a shell as described in any one of the above items, wherein the pole core is arranged in the accommodating cavity.

[0018] The beneficial effects of the utility model are:

[0019] In the cover plate assembly, battery protection plate and battery provided by the utility model, since insulating parts are arranged on the top cover plate and the pole body, the insulating parts extend in the gap, and can play an insulating role between the top cover plate and the pole body, thereby forming polarity insulation and sealing effects on the battery; moreover, the insulating parts also cover the pole body and the top cover plate, thereby increasing the insulation and sealing areas, thereby increasing the polarity insulation and sealing effects on the battery, and improving the safety performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a cover plate assembly in an embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of a cover plate assembly in an embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of a cover plate assembly in an embodiment of the present invention.

[0024] In the figure: 100, top cover plate; 110, gap; 120, second straight part; 130, first straight part; 140, bending part; 210, pole column body; 220, first connecting plate; 230, connecting protrusion; 300, reinforcing sheet; 400, insulating part; 410, first insulating sheet; 420, insulating ring; 430, second insulating sheet; 440, third insulating sheet; 500, connecting piece. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the following further details the present invention in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Figure 1 is a schematic structural diagram of a cover plate assembly in an embodiment of the present utility model, as Figure 1 shown, and with reference to Figures 2 to 3 , the embodiment of the present utility model provides a cover plate assembly, including a top cover plate 100, a pole column body 210, and an insulating member 400. A communication hole is provided on the top cover plate 100; the pole column body 210 is located in the communication hole, and a gap 110 is formed between the pole column body 210 and the communication hole; the insulating member 400 covers the pole column body 210 and the top cover plate 100, and extends into the gap 110, so that the pole column body 210 is insulated and connected to the top cover plate 100.

[0029] In the embodiment of the present utility model, since the insulating member 400 is provided on the top cover plate 100 and the pole column body 210, and the insulating member 400 extends into the gap 110, it can play an insulating role between the top cover plate 100 and the pole column body 210, forming a polar insulation and sealing effect on the battery; and, the insulating member 400 also covers the pole column body 210 and the top cover plate 100, increasing the insulation and sealing area, so the polar insulation and sealing effect on the battery is increased, and the safety performance of the battery is improved.

[0030] In an embodiment of the present utility model, the insulating member 400 includes a first insulating sheet 410 and an insulating ring 420. The insulating ring 420 is provided on one side of the first insulating sheet 410; the insulating ring 420 is located in the gap 110 and sleeved on the pole column body 210, and the first insulating sheet 410 covers the pole column body 210 and the top cover plate 100. Further, the insulating ring 420 and the first insulating sheet 410 are made of PP, PEEK, PI composite glue or other plastic materials, so as to bond the top cover plate 100 and the pole column body 210.

[0031] In an embodiment of the utility model, one end of the pole body 210 is connected to a first connecting plate 220, the first connecting plate 220 is located on the side of the top cover plate 100 away from the first insulating sheet 410, and the first connecting plate 220 is overlapped on the top cover plate 100. The insulating member 400 further includes a second insulating sheet 430, the second insulating sheet 430 is disposed between the first connecting plate 220 and the top cover plate 100, and the second insulating sheet 430 is connected to the insulating ring 420.

[0032] By setting the first connecting plate 220, the strength of the connection between the top cover plate 100 and the pole body 210 can be increased, the pressure bearing capacity of the connection part between the top cover plate 100 and the pole body 210 can be increased, and the pole can be prevented from being deformed or broken when affected by external forces or vibrations, thereby improving the performance and safety of the battery. The second insulating sheet 430 can play a role in polar insulation and sealing between the first connecting plate 220 and the top cover plate 100, so that both the upper and lower sides of the top cover plate 100 are sealed, thereby improving the sealing effect. Therefore, under the premise of the same sealing area, the diameter of the battery can be reduced, thereby reducing the volume of the battery and improving the energy density.

[0033] like Figure 2 As shown, in one embodiment of the utility model, the cover plate assembly also includes a connecting piece 500, and the connecting piece 500 is arranged on the side of the pole body 210 away from the first connecting plate 220, and is located between the first insulating sheet 410 and the pole body 210. When used, the connecting piece 500 is used to connect to an external circuit. The connecting piece 500 is a nickel sheet, which is stable in the air. This property ensures its stability and reliability during long-term use. Alternatively, the connecting piece 500 is a stainless steel sheet, and the stainless steel sheet is plated with a nickel layer on the side away from the inner pole. The surface of the stainless steel sheet after nickel plating has the characteristics of high hardness, strong corrosion resistance, good wear resistance, and excellent electrical conductivity.

[0034] Furthermore, the second insulating sheet 430 is ring-shaped. When in use, the external circuit can pass through the hollow of the second insulating sheet 430 and connect with the connecting sheet 500 to avoid interfering with the connection between the battery and the external circuit.

[0035] like Figure 3As shown, in an alternative embodiment of the present invention, the top cover plate 100 includes a first straight portion 130, a second straight portion 120 and a bent portion 140, the first straight portion 130 and the second straight portion 120 are both annular, and the two ends of the bent portion 140 are respectively connected to the inner edge of the first straight portion 130 and the outer edge of the second straight portion 120; the bent portion 140 is cylindrical, and the inner wall of the bent portion 140 is the hole wall of the communicating hole, and the pole body 210 is overlapped on the second straight portion 120. By setting the second straight portion 120, the strength of the connection between the top cover plate 100 and the pole body 210 can be increased, and the pressure bearing capacity of the connection part between the top cover plate 100 and the pole body 210 can be further increased, so as to prevent the pole from being deformed or broken when it is affected by external forces or vibrations, thereby improving the performance and safety of the battery. The insulating member 400 further includes a third insulating sheet 440, which is disposed between the second straight portion 120 and the pole body 210, and is connected to the insulating ring 420. The third insulating sheet 440 can provide polarity insulation and sealing between the second straight portion 120 and the top cover plate 100, so that both the upper and lower sides of the top cover plate 100 are sealed, thereby improving the sealing effect. Therefore, under the premise of the same sealing area, the diameter of the battery can be reduced, thereby reducing the volume of the battery and improving the energy density.

[0036] Furthermore, a connecting protrusion 230 is provided on the side of the pole body 210 away from the reinforcing sheet 300, and the connecting protrusion 230 passes through the connecting hole; the pole body 210 and the connecting protrusion 230 are integrally formed. The setting of the connecting protrusion 230 can facilitate the connection between the pole core of the battery and the pole body 210.

[0037] In one embodiment of the present invention, the reinforcing sheet 300 is a glass fiber board, and the thickness of the reinforcing sheet 300 is 0.1-0.15 mm. Alternatively, the reinforcing sheet 300 is made of insulating materials such as plastic.

[0038] In an embodiment of the present utility model, the cover plate assembly further includes a reinforcing sheet 300. The reinforcing sheet 300 is disposed on a side of the first insulating sheet 410 away from the pole column body 210, and a projection of the reinforcing sheet 300 on the top cover plate 100 covers the gap 110; the thickness of the top cover plate 100 is greater than the thickness of the first insulating sheet 410. Since the reinforcing sheet 300 covers the gap 110, it can enhance the mechanical strength at the gap 110, avoid deformation or fracture of the pole column when affected by external forces or vibrations and other factors, avoid affecting the use of the battery and improve the safety performance of the battery; on the other hand, since the reinforcing sheet 300 is disposed on a side of the first insulating sheet 410 away from the pole column body 210, it can protect the first insulating sheet 410 from external damage.

[0039] The present utility model further provides a housing, including a housing body and the cover plate assembly in any one of the above embodiments, so as to have all the effects of the cover plate assembly. The housing body has a receiving cavity with an opening at one end, and the top cover plate 100 is installed on the housing body and seals the opening.

[0040] The present utility model further provides a battery, including a battery core and a housing as in any one of the above embodiments, so as to have all the effects of the housing. The battery core is disposed in the receiving cavity.

[0041] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be included in the protection scope of the present utility model.

Claims

1. A cover plate assembly, characterized in that: The invention comprises a top cover plate (100), a pole body (210) and an insulating member (400), wherein a connecting hole is arranged on the top cover plate (100); the pole body (210) is located in the connecting hole, and a gap (110) is formed between the pole body (210) and the connecting hole; the insulating member (400) covers the pole body (210) and the top cover plate (100), and extends into the gap (110), so that the pole body (210) and the top cover plate (100) are insulated and connected.

2. The cover plate assembly according to claim 1, characterized in that: The insulating member (400) comprises a first insulating sheet (410) and an insulating ring (420), wherein the insulating ring (420) is arranged on one side of the first insulating sheet (410); the insulating ring (420) is located in the gap (110), and the first insulating sheet (410) covers the pole body (210) and the top cover plate (100).

3. The cover plate assembly according to claim 2, characterized in that: One end of the pole body (210) is connected to a first connecting plate (220), the first connecting plate (220) is located on a side of the top cover plate (100) away from the first insulating sheet (410), and the first connecting plate (220) is overlapped on the top cover plate (100); The insulating member (400) further comprises a second insulating sheet (430), wherein the second insulating sheet (430) is arranged between the first connecting plate (220) and the top cover plate (100), and the second insulating sheet (430) is connected to the insulating ring (420).

4. The cover plate assembly according to claim 3, characterized in that: The cover plate assembly further comprises a connecting sheet (500), wherein the connecting sheet (500) is arranged on a side of the pole body (210) away from the first connecting plate (220) and is located between the first insulating sheet (410) and the pole body (210); The connecting sheet (500) is a nickel sheet; or, the connecting sheet (500) is a stainless steel sheet, and a nickel layer is plated on a side of the stainless steel sheet facing away from the pole body (210).

5. The cover plate assembly according to claim 2, characterized in that: The top cover plate (100) comprises a first straight portion (130), a second straight portion (120) and a bent portion (140); the first straight portion (130) and the second straight portion (120) are both annular, and two ends of the bent portion (140) are respectively connected to the inner edge of the first straight portion (130) and the outer edge of the second straight portion (120); the bent portion (140) is cylindrical, and the inner wall of the bent portion (140) is the hole wall of the communicating hole; the pole body (210) is overlapped on the second straight portion (120); The insulating member (400) further comprises a third insulating sheet (440), wherein the third insulating sheet (440) is arranged between the second straight portion (120) and the pole body (210), and the third insulating sheet (440) is connected to the insulating ring (420).

6. The cover plate assembly according to claim 5, characterized in that: A connecting protrusion (230) is provided on a side of the pole body (210) facing away from the first insulating sheet (410), and the connecting protrusion (230) passes through the connecting hole.

7. The cover plate assembly according to claim 2, characterized in that: The cover plate assembly further comprises a reinforcing sheet (300), wherein the reinforcing sheet (300) is arranged on a side of the first insulating sheet (410) away from the pole body (210), and a projection of the reinforcing sheet (300) on the top cover plate (100) covers the gap (110); The thickness of the top cover plate (100) is greater than the thickness of the first insulating sheet (410).

8. A housing, characterized in that: It comprises a shell and a cover plate assembly as claimed in any one of claims 1 to 7, wherein the shell has a receiving cavity with an opening at one end, and the top cover plate (100) is mounted on the shell and blocks the opening.

9. A battery, characterized in that: It comprises a pole core and a shell as claimed in claim 8, wherein the pole core is arranged in the accommodating cavity.

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