A button battery

Abstract

The present invention provides a button battery, comprising a shell, a sealing ring, a first end cover, a second end cover and a battery cell, wherein the shell is a cavity with openings at both ends, the first end cover is welded and fixed to one end of the shell to seal the first opening of the shell; the sealing ring is arranged between the shell and the second end cover, and is respectively fixedly connected to the shell and the second end cover to cooperate with the second end cover to seal the second opening of the shell; the battery cell is arranged in the shell; the battery cell comprises a battery cell body, a first pole ear and a second pole ear, one end of the first pole ear is electrically connected to the battery cell body, and the other end is electrically connected to the first end cover; one end of the second pole ear is electrically connected to the battery cell body, and the other end is electrically connected to the second end cover. The embodiment of the present invention does not need to adopt a structure in which the upper and lower shells are connected, thereby simplifying the process flow of assembly and processing.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a button battery. Background Art

[0002] Button batteries are widely used, mainly in wearable products, electronic products, medical products and other fields, so the packaging issue is very important.

[0003] At present, button-type batteries mainly use a shell to wrap the battery cell. Since the battery cell needs to be arranged inside the shell, the shell needs to be formed by connecting the upper shell and the lower shell through a sealant. In order to ensure the stability of the package, the existing button-type batteries mainly use a structure in which the upper shell part is placed in the lower shell to increase the contact area between the upper and lower shells. The assembly and processing process of this button-type battery structure is relatively complicated. Summary of the invention

[0004] The embodiment of the present invention provides a button-type battery to solve the problem that the process flow of the existing button-type battery assembly and processing is relatively complicated.

[0005] An embodiment of the present invention provides a button-type battery, comprising a shell, a sealing ring, a first end cover, a second end cover and a battery cell, wherein the shell is a cavity with openings at both ends, and the first end cover is welded and fixed to one end of the shell to seal the first opening of the shell; the sealing ring is arranged between the shell and the second end cover, and is fixedly connected to the shell and the second end cover respectively, so as to cooperate with the second end cover to seal the second opening of the shell;

[0006] The battery cell is arranged in the shell; the battery cell includes a battery cell body, a first pole ear and a second pole ear, one end of the first pole ear is electrically connected to the battery cell body, and the other end is electrically connected to the first end cover; one end of the second pole ear is electrically connected to the battery cell body, and the other end is electrically connected to the second end cover.

[0007] Optionally, the sealing ring is fixedly connected to the shell and the second end cover respectively by welding, injection molding or riveting.

[0008] Optionally, it further includes a conductive member, wherein the conductive member is disposed in the housing, and one end of the conductive member passes through the second opening and is fixedly connected to the second end cover;

[0009] One end of the second electrode tab is connected to the other end of the conductive member so as to be electrically connected to the second end cover through the conductive member.

[0010] Optionally, the conductive member is provided in a cylindrical shape, and the battery cell body is arranged around the conductive member.

[0011] Optionally, the first pole lug and the second pole lug are arranged on the same side of the battery cell body, and are both located between the first end cover and the battery cell body.

[0012] Optionally, insulating tape is provided between the first pole lug and the second pole lug.

[0013] Optionally, the sealing ring is made of insulating material.

[0014] Optionally, the shell, the first end cover and the second end cover are made of conductive material.

[0015] In the embodiment of the present invention, the first end cover is welded and fixed to one end of the shell to seal the first opening of the shell, and a sealing ring is arranged between the shell and the second end cover, and is fixedly connected to the shell and the second end cover respectively to cooperate with the second end cover to seal the second opening of the shell. Therefore, there is no need to adopt a structure for connecting the upper and lower shells, and there is no need to place the upper shell part in the lower shell to increase the connection area between the upper and lower shells to improve the packaging stability, thereby simplifying the process flow of button battery assembly and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of a button battery provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0020] Reference Figure 1 The embodiment of the present invention provides a button-type battery, comprising a shell 10, a sealing ring 20, a first end cover 30, a second end cover 40 and a battery cell, wherein the shell 10 is a cavity with openings at both ends, and the first end cover 30 is welded and fixed to one end of the shell 10 to seal the first opening of the shell 10; the sealing ring 20 is disposed between the shell 10 and the second end cover 40, and is fixedly connected to the shell 10 and the second end cover 40 respectively, so as to cooperate with the second end cover 40 to seal the second opening of the shell 10;

[0021] The battery cell is arranged in the shell 10; the battery cell includes a battery cell body 50, a first pole ear 51 and a second pole ear 52, one end of the first pole ear 51 is electrically connected to the battery cell body 50, and the other end is electrically connected to the first end cover 30; one end of the second pole ear 52 is electrically connected to the battery cell body 50, and the other end is electrically connected to the second end cover 40.

[0022] In order to enhance the sealing of the button battery and facilitate processing, the housing 10 may be substantially cylindrical. At the same time, the size of the first opening may be larger than the size of the second opening. In other words, the housing 10 may be provided with an annular flange at the end face where the second opening is located, and the annular flange is adapted to the sealing ring 20 and fixedly connected to the sealing ring 20.

[0023] The battery cell body 50 is wound in the accommodating cavity in the form of a winding, including a positive winding and a negative winding. An insulating tape may be provided between the positive winding and the negative winding to prevent a short circuit.

[0024] In the embodiment of the present invention, the first pole tab 51 may be a negative pole tab for realizing electrical connection between the cell body 50 and the first end cover 30 ; the second pole tab 52 may be a positive pole tab for realizing electrical connection between the cell body 50 and the second end cover 40 .

[0025] Specifically, the connection method between the first pole tab 51 and the first end cover 30 can be set according to actual needs. In the embodiment of the present invention, the first pole tab 51 can be connected to the first end cover 30 by welding, or by bonding or other methods. Correspondingly, the second pole tab 52 can also be connected to the second end cover 40 by welding or bonding.

[0026] In the embodiment of the present invention, the first end cap 30 is welded and fixed to one end of the shell 10 to seal the first opening of the shell 10, and the sealing ring 20 is disposed between the shell 10 and the second end cap 40, and is fixedly connected to the shell 10 and the second end cap 40 respectively to cooperate with the second end cap 40 to seal the second opening of the shell 10, thereby eliminating the need to adopt a structure in which the upper and lower shells 10 are connected, and eliminating the need to partially accommodate the upper shell 10 in the lower shell 10 to increase the connection area between the upper and lower shells 10 in order to improve the packaging stability, thereby simplifying the process flow of button battery assembly processing.

[0027] Furthermore, the sealing ring 20 can be fixedly connected to the housing 10 and the second end cover 40 according to actual needs. In an embodiment of the present invention, the sealing ring 20 is fixedly connected to the housing 10 and the second end cover 40 by welding, injection molding or riveting.

[0028] Furthermore, the button battery may further include a conductive member 60, which is disposed in the housing 10, and one end of the conductive member 60 passes through the second opening and is fixedly connected to the second end cover 40;

[0029] One end of the second electrode tab 52 is connected to the other end of the conductive member 60 to be electrically connected to the second end cover 40 through the conductive member 60 .

[0030] Specifically, the conductive member 60 may be provided in a cylindrical shape, and the cell body 50 is arranged around the conductive member 60. The first pole tab 51 and the second pole tab 52 may be provided on the same side of the cell body 50, and both are located between the first end cover 30 and the cell body 50.

[0031] In the embodiment of the present invention, a conductive member 60 is provided, and the second pole ear 52 is electrically connected to the second end cover 40 through the conductive member 60, so that the first pole ear 51 and the second pole ear 52 can be provided on the same side of the battery cell body 50, thereby avoiding the problem of damaging the sealing structure when the second pole ear 52 is provided on the other side and directly connected to the second end cover 40, thereby improving the reliability of the button battery.

[0032] Furthermore, in order to prevent short circuit, an insulating tape 70 may be provided between the first pole tab 51 and the second pole tab 52. The sealing ring 20 may be made of insulating material.

[0033] Furthermore, the housing 10 , the first end cover 30 and the second end cover 40 are made of conductive materials, which can generally be conductive metals such as zinc or stainless steel.

[0034] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A button battery, characterized in that: The battery comprises a shell, a sealing ring, a first end cover, a second end cover and a battery cell, wherein the shell is a cavity with openings at both ends, and the first end cover is welded and fixed to one end of the shell to seal the first opening of the shell; the sealing ring is arranged between the shell and the second end cover, and is fixedly connected to the shell and the second end cover respectively, so as to cooperate with the second end cover to seal the second opening of the shell; The battery cell is arranged in the shell; the battery cell comprises a battery cell body, a first pole ear and a second pole ear, one end of the first pole ear is electrically connected to the battery cell body, and the other end is electrically connected to the first end cover; one end of the second pole ear is electrically connected to the battery cell body, and the other end is electrically connected to the second end cover; The button battery further includes a conductive member, which is disposed in the housing, and one end of the conductive member passes through the second opening and is fixedly connected to the second end cover; One end of the second electrode tab is connected to the other end of the conductive member so as to be electrically connected to the second end cap through the conductive member; The conductive member is provided in a cylindrical shape, and the battery cell body is arranged around the conductive member; The first pole tab and the second pole tab are arranged on the same side of the battery cell body, and are both located between the first end cover and the battery cell body.

2. The button battery according to claim 1, characterized in that: The sealing ring is fixedly connected to the shell and the second end cover respectively by welding, injection molding or riveting.

3. The button battery according to claim 1, characterized in that: Insulating tape is arranged between the first pole tab and the second pole tab.

4. The button cell according to claim 1, characterized in that: The sealing ring is made of insulating material.

5. The button battery according to claim 1, characterized in that: The shell, the first end cover and the second end cover are made of conductive material.

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