A button cell and an electric device

Abstract

The utility model relates to lithium ion battery technical field especially relates to a button cell and electrical equipment. Button cell includes casing, cover and electric core. Cover and casing enclose the closed containing cavity. Electric core sets up in containing cavity, and electric core includes the first electrode and second electrode of polarity opposite, and the first electrode is electrically connected in casing, and the second electrode is electrically connected in the inner end of wire. The change of electrode lead -out mode has increased the flexibility of battery assembly. Simultaneously, the insulating layer arranged between the cover and the casing is omitted, the proportion of the accommodating space of the containing cavity is increased, the volume proportion of the electric core in the button cell is increased, and the endurance of the button cell is improved. The utility model further provides an electrical equipment.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a button battery and an electrical device thereof. Background Technology

[0002] As customers increasingly demand miniaturization and portability in devices such as wireless headphones and watches, the space occupied by battery cells inside these devices is further reduced. However, people's desire for longer battery life is growing, forcing battery cell manufacturers to pack more active materials into the cells to meet energy density requirements. However, the thickness of existing button cell covers is generally between 0.5mm and 1mm, which is relatively thick, taking up significant space within the cell and limiting energy density, thus hindering improvements in battery life.

[0003] Improving the flexibility of button cell assembly, increasing the energy density of button cells, and enhancing battery life have become technical problems that urgently need to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a button battery and an electrical device that improves the energy density and battery life of the button battery. To address the problems and shortcomings of the existing technology, this utility model provides a button battery comprising:

[0005] A housing, the housing including a bottom wall and an upwardly extending peripheral wall, a wire provided on the housing, the wire passing through the housing, and the inner end of the wire located inside the housing and the outer end of the wire located outside the housing;

[0006] The conductor includes a conductor core and an insulating sleeve covering the outer surface of the conductor core;

[0007] A cover plate, which together with the housing, encloses a sealed receiving cavity;

[0008] A battery cell is disposed within the receiving cavity. The battery cell includes a first electrode and a second electrode with opposite polarities. The first electrode is electrically connected to the housing, and the second electrode is electrically connected to the inner end of the conductor.

[0009] Optionally, the insulating sleeve and the housing are integrally formed.

[0010] Optionally, the thickness of the cover plate is 0.05 mm to 0.15 mm.

[0011] Optionally, the housing is made of stainless steel.

[0012] Optionally, the outer diameter of the conductor is 0.1 mm to 2.0 mm.

[0013] Optionally, the material of the wire core is one of aluminum, nickel, and copper.

[0014] Optionally, the insulating sleeve is made of a polysilane polymer.

[0015] Optionally, the second electrode is a positive electrode.

[0016] This utility model also provides an electrical device, which includes the button battery described in any of the above claims.

[0017] Optionally, the electrical device is a wireless headset.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] (1) This utility model changes the way the positive or negative electrode of the button battery is led out, and one of the electrodes can be led out at any position in the casing, which greatly increases the flexibility of battery assembly.

[0020] (2) The electrode lead-out method in this utility model does not require an insulating layer between the cover plate and the shell, which increases the accommodating space formed by the shell and the cover plate, increases the volume that can accommodate the battery cell, improves the energy density of the button battery, and thus improves the battery life of the button battery.

[0021] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0022] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of a button battery according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the shell structure according to one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a wire according to an embodiment of the present invention.

[0026] In the diagram: 1-Button battery, 10-Casing, 11-Wire, 12-Insulating sleeve, 13-Wire core, 20-Cover plate, 30-Battery cell, 31-First conductive component, 32-Second conductive component. Detailed Implementation

[0027] The following reference Figures 1 to 3 This invention describes a button battery and an electrical device according to an embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0028] Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of those features, that is, include one or more of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0029] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] Figure 1 This is a schematic diagram of the structure of a button battery according to an embodiment of the present invention. Figure 1 As shown, combined with Figure 2 and Figure 3 This utility model provides a button battery, which includes a casing 10, a cover plate 20, and a battery cell 30. The casing 10 includes a bottom wall and an upwardly extending peripheral wall, and a wire 11 is disposed on the casing 10. The wire 11 includes a core 13 and an insulating sleeve 12 covering the outer surface of the core 13. The wire 11 passes through the casing 10, and the inner end of the wire 11 is located inside the casing 10, while the outer end of the wire 11 is located outside the casing 10. The cover plate 20 and the casing 10 enclose a closed receiving cavity. The battery cell 30 is disposed within the receiving cavity and includes a first electrode and a second electrode with opposite polarities. The first electrode is electrically connected to the casing 10, and the second electrode is electrically connected to the inner end of the wire 11.

[0031] Specifically, the first electrode is electrically connected to the housing 10 via the first conductive element 31, and the second electrode is electrically connected to the inner end of the wire 11 via the second conductive element 32.

[0032] Specifically, the battery cell 30 is placed within the cavity formed by the housing 10 and the cover plate 20. One electrode of the battery cell 30 is connected to the housing 10, and the other electrode is connected to a wire 11 that passes through the housing 10, extending out of the housing 10 via the wire 11. Depending on the position of the wire 11, one electrode of the battery cell 30 can be extended from any position within the housing 10, increasing the flexibility of battery assembly. This change in electrode extension eliminates the need for an insulating layer between the cover plate 20 and the housing 10, increasing the proportion of the cavity's capacity and the volumetric proportion of the battery cell 30 within the button cell 1, thereby improving the energy density of the button cell 1 and ultimately enhancing its range.

[0033] In some embodiments of this utility model, the insulating sleeve 12 and the housing 10 are integrally formed. That is, the housing 10 and the insulating sleeve 12 are a single unit with no gap between them. The integral formation of the housing 10 and the insulating sleeve 12 reduces the seam between the wire 11 and the insulating sleeve 12, making the connection between them tighter, and also fixing the position of the wire 11, preventing the wire 11 from moving during use.

[0034] In some other embodiments of this utility model, a hole is provided on the housing 10 to penetrate the housing 10, the wire 11 passes through the hole, and the surrounding gap is sealed with a high-temperature resistant insulating material.

[0035] In some embodiments of this utility model, the thickness of the cover plate 20 is 0.05 mm to 0.15 mm. The thickness of the cover plate 20 in a traditional button battery 1 is between 0.5 mm and 1 mm, which is relatively large and occupies space in the cell 30. In this embodiment, the thickness of the cover plate 20 is significantly reduced, increasing the space available for the cell 30 and improving the battery's energy density.

[0036] In some embodiments of this invention, the casing 10 is made of stainless steel. Stainless steel has strong corrosion resistance, high-temperature resistance, and oxidation resistance. Using stainless steel for the casing 10 of the button battery 1 ensures stable operation of the battery in various environments, improving the stability and lifespan of the button battery 1.

[0037] In some embodiments of this utility model, the outer diameter of the wire 11 is 0.1 mm to 2.0 mm.

[0038] In some embodiments of this invention, the core 13 is made of aluminum. Aluminum, as a conductive material, has advantages such as low price and light weight. Using aluminum as the core 13 reduces the cost and weight of the button battery 1 while maintaining the same energy density.

[0039] In some embodiments of this invention, the core 13 is made of copper. Copper, as a conductive material, has advantages such as low resistivity, good flexibility, good fatigue resistance, and high mechanical strength. Using copper as the core 13 can extend its service life and reduce energy loss and heat generation during use.

[0040] Of course, in some other embodiments of this invention, nickel or other metals may also be used as the material for the core 13.

[0041] In some embodiments of this invention, the insulating sleeve 12 is made of polysilane polymer. The hot forming temperature range of steel is 850℃~950℃, while the melting point range of polysilane polymer is 1100℃~1700℃, both higher than the hot forming temperature of steel. Using polysilane polymer as the insulating sleeve 12 allows for easy fabrication by placing the insulating sleeve 12 into a mold, pouring molten steel into the mold, and then allowing it to cool and solidify. Therefore, using polysilane polymer as the insulating sleeve 12 is simple to operate.

[0042] Specifically, the polysilane polymer can be dimethylpolysilane.

[0043] In some embodiments of this invention, the second electrode is a positive electrode.

[0044] In some other embodiments of this invention, the second electrode is a negative electrode.

[0045] This utility model also provides an electrical device, which includes a button battery as described in any of the above embodiments.

[0046] The electrical device used in this application embodiment is not particularly limited, and can be any electrical device known in the prior art. In some embodiments, the electrical device may include, but is not limited to, electronic cigarettes, electronic vaporizers, wireless headphones, robot vacuum cleaners, drones, laptops, pen input computers, mobile computers, e-book players, portable telephones, portable fax machines, portable copiers, portable printers, over-ear stereo headphones, video recorders, LCD TVs, portable cleaners, portable CD players, mini CDs, transceivers, electronic notebooks, calculators, memory cards, portable recorders, radios, backup power supplies, motors, automobiles, motorcycles, electric bicycles, bicycles, lighting fixtures, toys, game consoles, clocks, power tools, flashlights, cameras, household large-capacity batteries, and lithium-ion capacitors, etc.

[0047] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A button battery, characterized in that, The button battery includes: A housing, the housing including a bottom wall and an upwardly extending peripheral wall, a wire provided on the housing, the wire passing through the housing, and the inner end of the wire located inside the housing and the outer end of the wire located outside the housing; The conductor includes a conductor core and an insulating sleeve covering the outer surface of the conductor core; A cover plate, which together with the housing, encloses a sealed receiving cavity; A battery cell is disposed within the receiving cavity. The battery cell includes a first electrode and a second electrode with opposite polarities. The first electrode is electrically connected to the housing, and the second electrode is electrically connected to the inner end of the conductor.

2. The button battery according to claim 1, characterized in that, The insulating sleeve and the housing are integrally formed.

3. The button battery according to claim 1, characterized in that, The thickness of the cover plate is 0.05 mm to 0.15 mm.

4. The button battery according to claim 1, characterized in that, The shell is made of stainless steel.

5. The button battery according to claim 1, characterized in that, The outer diameter of the conductor is 0.1 mm to 2.0 mm.

6. The button battery according to claim 1, characterized in that, The core material is one of aluminum, nickel, or copper.

7. The button battery according to claim 5, characterized in that, The insulating sleeve is made of polysilane polymer.

8. The button battery according to claim 5, characterized in that, The second electrode is the positive electrode.

9. An electrical appliance, characterized in that, The electrical device includes a button battery as described in any one of claims 1 to 8.

10. The electrical equipment according to claim 9, characterized in that, The electrical device is a wireless headset.

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