Spherical battery and electric equipment

Abstract

The utility model discloses a spherical battery and electric equipment, and the spherical battery comprises a shell which is a sphere and is internally provided with a containing cavity; the supporting part is arranged in the accommodating cavity, and a supporting surface is formed on the peripheral surface of the supporting part; a positive pole piece, a negative pole piece and a diaphragm arranged between the positive pole piece and the negative pole piece are stacked on the supporting surface. According to the spherical battery, the product space can be reasonably utilized, the electricity storage capacity is improved, and the product endurance time is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a spherical battery and electrical equipment. Background Art

[0002] With the development of science and technology in recent years, lithium-ion batteries have been increasingly used in technological products such as smart homes, smart wearables, and Bluetooth headsets, which has put forward more diverse requirements for the performance and structural characteristics of battery components. Due to the simple production process and good manufacturability, the existing lithium battery structures are mostly square and cylindrical. There are relatively few types of battery structures on the market, which can no longer meet the more diversified needs of consumer battery products. In some special structural spaces, square or cylindrical batteries cannot fully and effectively utilize the internal space, resulting in low component volume energy density. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a spherical battery. The spherical battery of the utility model can reasonably utilize product space, increase power storage capacity, and extend product life.

[0004] The utility model also provides an electrical device having the spherical battery.

[0005] The spherical battery according to the utility model includes: a shell, which is constructed as a sphere and has a accommodating cavity formed inside; a support portion, which is arranged in the accommodating cavity and has a supporting surface formed on the outer peripheral surface of the support portion; a positive electrode sheet, a negative electrode sheet, and a diaphragm stacked between the positive electrode sheet and the negative electrode sheet are arranged on the supporting surface.

[0006] According to the spherical battery of the utility model, the shell is constructed into a spherical shape to match the use requirements of electronic products, and the positive electrode sheet and the negative electrode sheet are supported by arranging a supporting part inside the shell. The positive electrode sheet, the negative electrode sheet and the diaphragm are installed stably, and the positive electrode sheet, the negative electrode sheet and the diaphragm are stacked and arranged on the periphery of the supporting part. The supporting part occupies a small space, and more positive electrode sheets and negative electrode sheets can be accommodated in the accommodating cavity, which is beneficial to improving the battery energy density and storage capacity.

[0007] According to some embodiments of the utility model, the support portion is configured as a sphere, the support surface is configured as a spherical surface, a plurality of covering areas are arranged on the periphery of the support portion, and the positive electrode sheet, the negative electrode sheet and the diaphragm are configured as a plurality of groups respectively attached to corresponding covering areas.

[0008] According to some embodiments of the utility model, it also includes: a protective film, which is arranged on the inner wall surface of the accommodating cavity and is suitable for isolating the positive electrode plate and the negative electrode plate from the shell, wherein the inner side of each group of the positive electrode plate, the negative electrode plate and the diaphragm stops at the covering area, and the outer side stops at the protective film.

[0009] According to some embodiments of the present invention, the center of the support portion coincides with the center of the shell.

[0010] According to some embodiments of the present invention, each group of the positive electrode sheet, the negative electrode sheet and the separator is respectively constructed in a hemispherical shape.

[0011] According to some embodiments of the utility model, the spherical battery also includes: a positive electrode column and a negative electrode column, the positive electrode column and the negative electrode column are arranged on the shell; a positive electrode tab and a negative electrode tab, the positive electrode tab is accommodated in the accommodating cavity and connects the positive electrode sheet to the positive electrode column, and the negative electrode tab is accommodated in the accommodating cavity and connects the negative electrode sheet to the negative electrode column.

[0012] According to some embodiments of the present invention, the positive electrode post and the negative electrode post are arranged opposite to each other along the diameter direction of the shell.

[0013] According to some embodiments of the present utility model, an explosion-proof valve is provided on the housing.

[0014] The following briefly describes an electrical device according to another embodiment of the present invention.

[0015] According to the utility model, the electric device has the spherical battery described in any one of the above-mentioned embodiments. Since the electric device according to the utility model has the spherical battery described in any one of the above-mentioned embodiments, the spherical battery can reasonably match the internal space of the electric device, improve the battery density, and extend the battery life of the electric device. The electric device can be a round or spherical device such as a Bluetooth headset.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a cross-sectional view of a spherical battery according to an embodiment of the utility model;

[0019] Figure 2is a three-dimensional diagram of a spherical battery according to an embodiment of the utility model;

[0020] Figure 3 Detailed description of the invention The figure is an exploded view of a spherical battery according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] Spherical battery 1;

[0023] Shell 11; Support portion 12;

[0024] Positive electrode sheet 131, positive electrode tab 132, positive electrode column 133, positive electrode material 134;

[0025] Negative electrode sheet 141, negative electrode tab 142, negative electrode column 143, negative electrode material 144;

[0026] Diaphragm 15; protective film 16; explosion-proof valve 17. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] With the development of science and technology in recent years, lithium-ion batteries have been increasingly used in technological products such as smart homes, smart wearables, and Bluetooth headsets, which has put forward more diverse requirements for the performance and structural characteristics of battery components. Due to the simple production process and good manufacturability, the existing lithium battery structures are mostly square and cylindrical. There are relatively few types of battery structures on the market, which can no longer meet the more diversified needs of consumer battery products. In some special structural spaces, square or cylindrical batteries cannot fully and effectively utilize the internal space, resulting in low component volume energy density.

[0029] Reference below Figure 1-Figure 3 A spherical battery according to an embodiment of the present invention is described.

[0030] According to the utility model, the spherical battery 1 includes a shell 11 and a support portion 12, the shell 11 is constructed as a sphere and has a accommodating cavity formed inside; the support portion 12 is arranged in the accommodating cavity, and the outer peripheral surface of the support portion 12 forms a supporting surface; the positive electrode sheet 131, the negative electrode sheet 141 and the separator 15 arranged between the positive electrode sheet 131 and the negative electrode sheet 141 are stacked and arranged on the supporting surface.

[0031] Specifically, the shell 11 is constructed as a sphere, so that the spherical battery 1 is suitable for round or spherical devices, such as Bluetooth headsets, etc., and the product space is reasonably utilized. A support portion 12 is provided in the shell 11, and a support surface is formed on the outer peripheral surface of the support portion 12. The positive electrode sheet 131, the negative electrode sheet 141 and the diaphragm 15 are stacked and arranged on the support surface, wherein the positive electrode sheet 131 is attached to the support surface, the diaphragm 15 is arranged on the side of the positive electrode sheet 131 away from the support portion 12, and the negative electrode sheet 141 is stacked. It is added to the side of the diaphragm 15 away from the positive electrode sheet 131 to achieve the stacking of the positive electrode sheet 131, the diaphragm 15 and the negative electrode sheet 141. The support part 12 can be constructed as a sphere or a hemisphere. The positive electrode sheet 131 and the negative electrode sheet 141 are supported by the support part 12. The installation of the positive electrode sheet 131, the negative electrode sheet 141 and the diaphragm 15 is stable, and the support part occupies a small space. More positive electrode sheets and negative electrode sheets can be accommodated in the accommodating cavity, thereby improving the energy density of the spherical battery 1.

[0032] According to the spherical battery 1 of the utility model, the shell 11 is constructed into a spherical shape to match the use requirements of electronic products, and the positive electrode sheet 131 and the negative electrode sheet 141 are supported by arranging a support portion 12 inside the shell 11. The positive electrode sheet 131, the negative electrode sheet 141 and the diaphragm 15 are stably installed. The positive electrode sheet 131, the negative electrode sheet 141 and the diaphragm 15 are stacked and arranged on the periphery of the support portion 12. The support portion 12 occupies a small space, and more positive electrode sheets 131 and negative electrode sheets 141 can be accommodated in the accommodating cavity, which is beneficial to improving the battery energy density and storage capacity.

[0033] According to some embodiments of the utility model, the support portion 12 is constructed as a sphere, the support surface is constructed as a spherical surface, a plurality of covering areas are arranged on the periphery of the support portion 12, and the positive electrode sheet 131, the negative electrode sheet 141 and the diaphragm 15 are constructed as a plurality of groups respectively attached to the corresponding covering areas.

[0034] Specifically, the support portion 12 is constructed as a sphere, and a spherical support surface is formed on the outer periphery of the support portion 12. The positive electrode plate 131, the negative electrode plate 141 and the diaphragm 15 are attached to the support surface and stacked layer by layer, forming multiple covering areas on the support surface. The shape of each covering area can be limited according to specific circumstances, such as a semi-spherical shape, etc., to facilitate the installation of the positive electrode plate 131 and the negative electrode plate 141.

[0035] According to some embodiments of the utility model, a protective film 16 is further included. The protective film 16 is arranged on the inner wall surface of the accommodating cavity and is suitable for isolating the positive electrode sheet 131 and the negative electrode sheet 141 from the shell 11, wherein each group of positive electrode sheets 131, negative electrode sheets 141 and diaphragm 15 is abutted against the covering area on the inner side and against the protective film 16 on the outer side.

[0036] Specifically, the support portion 12 is disposed inside the housing 11 and supports the positive electrode sheet 131, the negative electrode sheet 141 and the diaphragm 15, wherein the support portion 12 is constructed as a sphere and as an insulating member, which facilitates the arrangement of the positive electrode sheet 131 and the negative electrode sheet 141 and avoids short circuits to ensure battery safety, wherein a protective film 16 is disposed on the inner wall surface of the accommodating cavity, and the protective film 16 is constructed as a spherical or semi-spherical shape and covers each group of positive electrode sheets The outer periphery of the positive electrode sheet 131 and the negative electrode sheet 141, the inner side of each group of positive electrode sheet 131, negative electrode sheet 141 and diaphragm 15 is stopped against the covering area, and the outer side is stopped against the protective film 16, the shell 11 and the support part 12 support both sides of the positive electrode sheet 131 and the negative electrode sheet 141, the installation of the positive electrode sheet 131 and the negative electrode sheet 141 is more stable, and the material of the protective film 16 is insulating material, which can protect the positive electrode sheet 131 and the negative electrode sheet 141.

[0037] The protective film 16 may be constructed as a Mylar film, which is a thin film material made of polyester fiber and has excellent insulation properties, mechanical strength and thermal stability, thereby ensuring battery safety.

[0038] According to some embodiments of the utility model, the center of the support portion 12 coincides with the center of the shell 11, the positive pole piece 131, the negative pole piece 141 and the diaphragm 15 are attached to the outer periphery of the support portion 12, the arrangement of the positive pole piece 131, the negative pole piece 141 and the diaphragm 15 is more uniform, and the force on the positive pole piece 131 and the negative pole piece 141 is more balanced, thereby avoiding stress concentration and bursting of the positive pole piece 131 and the negative pole piece 141.

[0039] According to some embodiments of the present invention, each group of positive electrode sheet 131 , negative electrode sheet 141 and separator 15 is respectively constructed in a hemispherical shape.

[0040] Specifically, each group of positive electrode plates 131, negative electrode plates 141 and diaphragm 15 are respectively constructed in a hemispherical shape, and a pair of hemispherical positive electrode plates 131 are attached to the outer periphery of the spherical support portion 12 to facilitate the arrangement of the positive electrode plates 131. The diaphragm 15 and the negative electrode plates 141 are respectively constructed in a hemispherical shape and stacked on the outer periphery of the positive electrode plates 131, making the arrangement of the diaphragm 15 and the negative electrode plates 141 more convenient.

[0041] Among them, the positive electrode plate 131 includes aluminum foil and positive electrode material 134, and the positive electrode material 134 can be one of lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, and lithium iron phosphate, or a mixture of two or more thereof. The negative electrode plate 141 includes copper foil and negative electrode material 144, and the negative electrode material 144 can be one of natural graphite, artificial graphite, acetylene black, carbon microspheres, lithium titanate, tin alloy, and silicon, or a mixture of two or more thereof.

[0042] According to some embodiments of the utility model, the spherical battery 1 also includes a positive electrode column 133 and a negative electrode column 143, which are arranged on the shell 11; a positive electrode ear 132 and a negative electrode ear 142, the positive electrode ear 132 is accommodated in the accommodating cavity and connects the positive electrode sheet 131 with the positive electrode column 133, and the negative electrode ear 142 is accommodated in the accommodating cavity and connects the negative electrode sheet 141 with the negative electrode column 143.

[0043] Specifically, the positive electrode tab 132 is led out from the positive electrode sheet 131 and connected to the positive electrode column 133, the negative electrode tab 142 is led out from the negative electrode sheet 141 and connected to the negative electrode column 143, the positive electrode tab 132 and the negative electrode tab 142 are respectively arranged in the accommodating cavity and extend radially away from each other, the positive electrode column 133 and the negative electrode column 143 are arranged on the shell 11, and the shell 11 may be provided with a lead-out hole so as to lead the positive electrode column 133 and the negative electrode column 143 to the outside of the shell 11 for current output.

[0044] According to some embodiments of the present invention, the positive electrode post 133 and the negative electrode post 143 are arranged opposite to each other along the diameter direction of the shell 11 .

[0045] like Figure 1 and Figure 2 As shown, the positive electrode column 133 and the negative electrode column 143 are respectively arranged on both sides of the radial direction of the shell 11, and the positive electrode column 133 and the negative electrode column 143 are respectively connected to the positive electrode ear 132 and the negative electrode ear 142, and the positive electrode column 133 and the negative electrode column 143 are arranged opposite to each other along the diameter direction of the shell 11 to avoid contact between the positive electrode ear 132 and the negative electrode ear 142 to avoid short circuit, and the positive electrode column 133 and the negative electrode column 143 are led out to the outside of the shell 11 to facilitate the output of current.

[0046] According to some embodiments of the utility model, an explosion-proof valve 17 is provided on the shell 11. The explosion-proof valve 17 can selectively connect the accommodating cavity with the outside. When the internal pressure of the battery is too high, the pressure can be released through the explosion-proof valve 17 to avoid the battery from bursting due to excessive internal pressure, thereby protecting the battery.

[0047] The electrical equipment according to the utility model is briefly described below.

[0048] According to the utility model, the electrical device has the spherical battery 1 described in any one of the above-mentioned embodiments. Since the electrical device according to the utility model has the spherical battery 1 described in any one of the above-mentioned embodiments, the spherical battery 1 can reasonably match the internal space of the electrical device, improve the battery density, and extend the battery life of the electrical device, wherein the electrical device can be a round or spherical device such as a Bluetooth headset.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0051] In the description of the present invention, "plurality" means two or more.

[0052] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0053] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spherical battery, characterized in that: include: A shell, wherein the shell is configured as a sphere and has a receiving cavity formed therein; A support portion, the support portion is disposed in the accommodating cavity, and a support surface is formed on an outer peripheral surface of the support portion; The positive electrode sheet, the negative electrode sheet and the diaphragm arranged between the positive electrode sheet and the negative electrode sheet are stacked and arranged on the supporting surface.

2. The spherical battery according to claim 1, characterized in that: The support portion is configured as a sphere, the support surface is configured as a spherical surface, a plurality of covering areas are arranged on the periphery of the support portion, and the positive electrode sheet, the negative electrode sheet and the diaphragm are configured as a plurality of groups respectively attached to corresponding covering areas.

3. The spherical battery according to claim 2, characterized in that: Also includes: A protective film is arranged on the inner wall surface of the accommodating cavity and is suitable for isolating the positive electrode plate and the negative electrode plate from the shell, wherein each group of the positive electrode plate, the negative electrode plate and the diaphragm is abutted against the covering area on the inner side and against the protective film on the outer side.

4. The spherical battery according to claim 3, characterized in that: The spherical center of the support portion coincides with the spherical center of the shell.

5. The spherical battery according to claim 3, characterized in that: Each group of the positive electrode sheet, the negative electrode sheet and the separator is respectively constructed in a hemispherical shape.

6. The spherical battery according to claim 2, characterized in that: Also includes: A positive electrode column and a negative electrode column, wherein the positive electrode column and the negative electrode column are arranged on the shell; A positive electrode tab and a negative electrode tab, wherein the positive electrode tab is received in the receiving cavity and connects the positive electrode sheet to the positive electrode column, and the negative electrode tab is received in the receiving cavity and connects the negative electrode sheet to the negative electrode column.

7. The spherical battery according to claim 6, characterized in that: The positive electrode column and the negative electrode column are arranged opposite to each other along the diameter direction of the shell.

8. The spherical battery according to claim 1, characterized in that: An explosion-proof valve is arranged on the shell.

9. An electrical device, characterized in that: A spherical battery comprising any one of claims 1 to 8.

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