Cover plate assembly, shell and battery

Abstract

The cover plate assembly comprises a top cover plate, a pole column body and a reinforcing sheet, a communicating hole is formed in the top cover plate, the pole column body is located in the communicating hole, a gap is formed between the pole column body and the communicating hole, and the pole column body is in insulation connection with the top cover plate; the reinforcing sheet is arranged on one side of the top cover plate and is in insulated connection with the top cover plate and the pole body, and the projection of the reinforcing sheet on the top cover plate covers the gap. According to the utility model, the reinforcing sheet which is in insulated connection with the top cover plate and the pole body is arranged and covers the gap, so that on one hand, the mechanical strength of the gap can be enhanced, the pole is prevented from being deformed or fractured under the influence of factors such as external force or vibration and the like, and the performance and the safety of the battery are improved; and on the other hand, as the reinforcing sheet covers the gap, conductive sundries can be prevented from falling into the gap, the short circuit of the battery is avoided, and the safety of the battery is further improved.

Description

Technical Field

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

[0002] In the power supply solutions of microelectronic devices, steel shell button batteries are widely used due to their excellent sealing performance and reliability. Such batteries can stably supply power in a variable environment to meet the power requirements of devices. With the development of technology, electronic devices tend to be more miniaturized and high-performance, which requires their power supply components, especially steel shell button batteries, not only to maintain the original excellent characteristics but also to further improve the structural stability and electrical performance.

[0003] In the design of traditional steel shell button batteries, the pole post is usually arranged at the top of the battery housing and is connected to the inside of the battery through a pole post hole. There is a certain gap between the pole post and the pole post hole to ensure the insulation between the battery housing and the pole post. However, this design has obvious defects. Since there is a gap between the outer edge of the pole post and the wall of the pole post hole, the connection part is structurally weak and cannot withstand large pressure; moreover, if conductive debris falls into the gap, it is easy to cause a short circuit of the battery, affecting the use and safety performance of the battery. Summary of the Utility Model

[0004] Embodiments of the utility model provide a cover plate assembly, a housing and a battery to solve the problems that the battery cannot withstand large pressure and is prone to short circuit due to the gap between the pole post and the pole post hole, and achieve 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 post body and a reinforcing piece. A communication hole is arranged on the top cover plate. The pole post body is located in the communication hole and there is a gap between the pole post body and the communication hole. The pole post body is insulated from the top cover plate; the reinforcing piece is arranged on one side of the top cover plate and is insulated from the top cover plate and the pole post body. The projection of the reinforcing piece on the top cover plate covers the gap.

[0006] Optionally, a first insulating sheet is arranged between the reinforcing piece and the top cover plate, and the first insulating sheet extends between the reinforcing piece and the pole post body.

[0007] Optionally, both the first insulating sheet and the reinforcing piece are annular structural members. The outer diameter of the first insulating sheet is larger than the outer diameter of the reinforcing piece, and the inner diameter of the first insulating sheet is smaller than the inner diameter of the reinforcing piece.

[0008] Optionally, the reinforcing piece is thermally pressed and compounded on the first insulating sheet; or the reinforcing piece is adhered to the first insulating sheet.

[0009] Optionally, the reinforcing sheet is a glass fiber sheet, a stainless steel sheet or a nickel sheet.

[0010] Optionally, the cover plate assembly further includes a connecting piece disposed on a side of the pole column body facing the reinforcing sheet and located between the first insulating sheet and the pole column body;

[0011] The connecting piece is a nickel sheet; or, the connecting piece is a stainless steel sheet with a nickel layer plated on a side facing away from the pole column body.

[0012] The present utility model further provides a housing, including a housing body and the cover plate assembly as described in any one of the above. The housing body has a receiving cavity with an opening at one end, and the top cover plate is mounted on the housing body to seal the opening.

[0013] The present utility model further provides a battery, including a battery core and the housing as described in any one of the above. The battery core is disposed in the receiving cavity.

[0014] The beneficial effects of the present utility model are as follows:

[0015] In the cover plate assembly, battery protection board and battery provided by the present utility model, since there is a reinforcing sheet that is insulated and connected to the top cover plate and the pole column body, and the reinforcing sheet covers the gap, on the one hand, it can enhance the mechanical strength at the gap, avoid deformation or fracture of the pole column when affected by external forces or vibrations, etc., avoid affecting the use of the battery and improve the safety performance of the battery; on the other hand, since the reinforcing sheet covers the gap, it can block conductive debris from falling into the gap, avoid causing a battery short circuit, and further improve the safety performance of the battery. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments of the present utility model. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of a cover plate assembly in an embodiment of the present utility model;

[0018] Figure 2 is a schematic structural diagram of a cover plate assembly in an embodiment of the present utility model;

[0019] Figure 3 is a schematic structural diagram of a cover plate assembly in an embodiment of the present utility model.

[0020] 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 sheet. Detailed implementation manner

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] In the description of the present utility model, 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 utility model 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 utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. 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.

[0024] Figure 1 It 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, an embodiment of the present utility model provides a cover plate assembly, including a top cover plate 100, a pole column body 210, and a reinforcing sheet 300. 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 pole column body 210 is insulated from the top cover plate 100; the reinforcing sheet 300 is arranged on one side of the top cover plate 100 and is insulated from the top cover plate 100 and the pole column body 210. The projection of the reinforcing sheet 300 on the top cover plate 100 covers the gap 110.

[0025] In the embodiment of the present utility model, due to the provision of the reinforcing sheet 300 that is insulated from the top cover plate 100 and the pole column body 210, and the reinforcing sheet 300 covers the gap 110. On the one hand, it can enhance the mechanical strength at the gap 110, prevent the pole column from deforming or breaking when affected by external forces or vibrations, etc., avoid affecting the use of the battery and improve the safety performance of the battery; on the other hand, since the reinforcing sheet 300 covers the gap 110, it can block conductive debris from falling into the gap 110, avoid causing a battery short circuit, and further improve the safety performance of the battery.

[0026] As Figure 3 shown, in an embodiment of the present utility model, a first insulating sheet 410 is provided between the reinforcing sheet 300 and the top cover plate 100, and the first insulating sheet 410 extends between the reinforcing sheet 300 and the pole column body 210. The provision of the first insulating sheet 410 increases the sealing area, and thus increases the polarity insulation and sealing effect on the battery. Further, the first insulating sheet 410 is made of PP, PEEK, PI composite glue or other plastic materials to bond the reinforcing sheet 300 to the housing and the pole column.

[0027] In an embodiment of the present utility model, both the first insulating sheet 410 and the reinforcing sheet 300 are annular structural members. The outer diameter of the first insulating sheet 410 is larger than the outer diameter of the reinforcing sheet 300, and the inner diameter of the first insulating sheet 410 is smaller than the inner diameter of the reinforcing sheet 300. With this setting, the projection of the reinforcing sheet 300 on the first insulating sheet 410 completely falls on the first insulating sheet 410, avoiding contact with the top cover plate 100 or the pole column body 210 to increase the insulation effect.

[0028] In an embodiment of the present utility model, the reinforcing sheet 300 is a structural member with relatively high mechanical strength such as a glass fiber sheet, a stainless steel sheet, or a nickel sheet to increase the mechanical strength of the cover plate assembly. Further, the reinforcing sheet 300 is thermally pressed and compounded on the first insulating sheet 410; or the reinforcing sheet 300 is bonded to the first insulating sheet 410 with strong glue.

[0029] In one embodiment of the utility model, an insulating ring 420 is provided in the gap 110. The insulating ring 420 is located in the gap 110 and is sleeved on the pole body 210. The insulating ring 420 is connected to the first insulating sheet 410. The insulating ring 420 can play an insulating role between the top cover plate 100 and the pole body 210, thereby forming polarity insulation and sealing effects on the battery.

[0030] In one 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 reinforcing plate 300, and the first connecting plate 220 is overlapped on the top cover plate 100. The cover plate assembly 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.

[0031] 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, 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 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.

[0032] 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 facing the reinforcing piece 300, 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 feature 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. When used, the external circuit can pass through the hollow of the second insulating sheet 430 to connect with the connecting piece 500, and the annular structure of the second insulating sheet 430 can avoid interfering with the connection between the battery and the external circuit.

[0033] like Figure 3As shown, in an alternative embodiment of the present utility model, the top cover plate 100 includes a first flat portion 130, a second flat portion 120, and a bending portion 140. Both the first flat portion 130 and the second flat portion 120 are annular. Two ends of the bending portion 140 are respectively connected to the inner edge of the first flat portion 130 and the outer edge of the second flat portion 120. The bending portion 140 is in a cylindrical shape, and the inner wall of the bending portion 140 is the pore wall of the communication hole. The pole column body 210 is lapped on the second flat portion 120. Through the arrangement of the second flat portion 120, the connection strength between the top cover plate 100 and the pole column body 210 can be increased, and further the pressure-bearing capacity of the connection part between the top cover plate 100 and the pole column body 210 can be increased, avoiding deformation or fracture of the pole column when affected by external forces or vibrations and other factors, and improving the performance and safety of the battery. The insulating member 400 further includes a third insulating sheet 440. The third insulating sheet 440 is disposed between the second flat portion 120 and the pole column body 210, and the third insulating sheet 440 is connected to the insulating ring 420. Through the arrangement of the third insulating sheet 440, polar insulation and sealing effects can be achieved between the second flat portion 120 and the top cover plate 100, so that both the upper and lower sides of the top cover plate 100 are sealed, improving the sealing effect. Therefore, on the premise of the same sealing area, the diameter of the battery can be reduced, thereby reducing the volume of the battery and increasing the energy density.

[0034] Further, a connection protrusion 230 is disposed on a side of the pole column body 210 away from the reinforcing sheet 300. The connection protrusion 230 passes through the communication hole; the pole column body 210 and the connection protrusion 230 are integrally formed. The arrangement of the connection protrusion 230 can facilitate the connection between the battery core and the pole column body 210.

[0035] In an embodiment of the present utility model, the first insulating sheet 410, the insulating ring 420, and the second insulating sheet 430 are integrally formed to form the insulating member 400; alternatively, the first insulating sheet 410, the insulating ring 420, and the third insulating sheet 440 are integrally formed to form the insulating member 400. The integrally formed insulating member 400 does not have any additional connection structures for connection, avoiding usage failures caused by loose connections.

[0036] 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 one end open, and the top cover plate 100 is installed on the housing body and seals the opening.

[0037] 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.

[0038] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention 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 various embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A cover plate assembly, characterized in that: The invention comprises a top cover plate (100), a pole body (210) and a reinforcing sheet (300); the top cover plate (100) is provided with a connecting hole, 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 pole body (210) is insulated and connected to the top cover plate (100); the reinforcing sheet (300) is arranged on one side of the top cover plate (100), and is insulated and connected to the top cover plate (100) and the pole body (210); the projection of the reinforcing sheet (300) on the top cover plate (100) covers the gap (110).

2. The cover plate assembly according to claim 1, characterized in that: A first insulating sheet (410) is provided between the reinforcing sheet (300) and the top cover plate (100), and the first insulating sheet (410) extends between the reinforcing sheet (300) and the pole body (210).

3. The cover plate assembly according to claim 2, characterized in that: The first insulating sheet (410) and the reinforcing sheet (300) are both annular structural parts, the outer diameter of the first insulating sheet (410) is larger than the outer diameter of the reinforcing sheet (300), and the inner diameter of the first insulating sheet (410) is smaller than the inner diameter of the reinforcing sheet (300).

4. The cover plate assembly according to claim 3, characterized in that: The reinforcing sheet (300) is laminated on the first insulating sheet (410) by hot pressing; Alternatively, the reinforcing sheet (300) is bonded to the first insulating sheet (410).

5. The cover plate assembly according to claim 4, characterized in that: The reinforcing sheet (300) is a glass fiber sheet, a stainless steel sheet or a nickel sheet.

6. 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) facing the reinforcing sheet (300) 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).

7. A housing, characterized in that: It comprises a shell and a cover plate assembly as claimed in any one of claims 1 to 6, 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.

8. A battery, characterized in that: It comprises a pole core and a shell as claimed in claim 7, wherein the pole core is arranged in the accommodating cavity.

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