Battery casing, battery, and electric device

Abstract

Embodiments of the present invention relate to the technical field of new energy batteries, and disclosed are a battery casing, a battery, and an electric device. The battery casing comprises a casing body, a positive electrode terminal, and a negative electrode terminal; a base is fixedly arranged at the bottom of the casing body; at least one pressure-bearing portion is provided on the outer surface of the casing body; and the positive electrode terminal and the negative electrode terminal are arranged at the top of the casing body. The structure of the battery casing is simplified, and the effects of safe and convenient disassembly are achieved.

Description

Battery casing, battery and electrical device Technical Field

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

[0002] With the development of social technology, more and more devices are becoming intelligent and electronic, and rechargeable batteries have become the power center for these devices. Currently, most electronic products with rechargeable batteries use embedded batteries, where the lithium battery is directly packaged inside the device. This type of built-in electronic product has two main disadvantages: First, it is difficult to replace the battery if it is damaged, requiring the replacement of the main unit and wasting resources; second, the battery cannot be removed and recycled when the product is discarded, polluting the environment.

[0003] Traditional electronic products with replaceable batteries are complicated to operate and have many parts (requiring the installation of batteries and tightening of the back cover), such as old-fashioned flashlights that use size D dry batteries.

[0004] Currently, traditional electronic products have several drawbacks: First, damaged batteries are difficult to repair, requiring disassembly of the main unit. Many electronic devices have main units that are difficult to disassemble, leading many consumers to discard the main unit directly after use, resulting in resource waste. Second, batteries are difficult to remove and recycle when discarding products, often resulting in environmental pollution. Third, the product's volume utilization is low; the need for a battery cover reduces the space available to house the battery, thus reducing the actual energy delivery and decreasing battery life. Fourth, traditional remote-controlled battery swapping methods result in high internal resistance of energy storage components due to numerous connection points. Furthermore, the latest European battery law requires removable batteries in digital products. This approach protects the environment (discarding used batteries pollutes the environment) and extends the lifespan of electronic products. Traditionally, electronic products with built-in batteries are simply discarded after they become unusable for two main reasons: First, many electronic products are glued during manufacturing for aesthetics and stability, making disassembly and recycling difficult; second, disassembling these products requires specialized knowledge, which many users lack, and repair costs at repair shops are high. Therefore, in the future, the battery will be separated into a detachable, independent component. This will not only extend the product's lifespan but also, by isolating the battery's circuitry from the overall circuitry, users can easily determine whether the problem lies with the device or the battery simply by replacing the battery, without requiring specialized knowledge. Furthermore, when the device malfunctions, the battery can be easily removed and recycled separately.

[0005] In the future, making the energy storage unit of traditional electronic products detachable as a whole will be a new technological trend. These electronic products include, but are not limited to, handheld fans, flashlights, atomizers, shavers, mobile phones, laser pointers, and other devices.

[0006] Therefore, this technology designs a simple detachable battery that does not have a complex detachable structure and achieves detachable connection of the battery by utilizing simple physical friction. Summary of the Invention

[0007] The technical problem to be solved by the embodiments of the present invention is the cumbersome battery replacement operation of electronic products.

[0008] To address the aforementioned problems, this invention discloses a battery casing. This simplifies the battery casing structure and enables safe and convenient disassembly.

[0009] In a first aspect, the present invention provides a battery housing, which includes a housing, a positive terminal and a negative terminal; a base is fixedly provided at the bottom of the housing; at least one pressure-bearing part is provided on the outer surface of the housing; the positive terminal and the negative terminal are respectively provided at the top of the housing.

[0010] A further technical solution is that the housing is also provided with a limiting part, and the negative terminal is disposed on the limiting part.

[0011] A further technical solution is that the outer diameter of the base is larger than the outer diameter of the shell.

[0012] A further technical solution is that the pressure-bearing part is made of heat-shrink tubing.

[0013] A further technical solution is that the base is provided with a pull ring.

[0014] A further technical solution is that the thickness of the pressure-bearing part gradually increases from top to bottom.

[0015] A further technical solution is that the thickness of the pressure-bearing part ranges from 0.05mm to 0.35mm.

[0016] A further technical solution includes a charging module, and the outer surface of the housing is provided with a charging port. The charging module is located inside the housing, and the charging port is connected to the charging module.

[0017] A further technical solution is that the bottom of the housing is provided with an air hole and an air passage, and the air passage is connected to the air hole and the charging port respectively.

[0018] A further technical solution is that the housing is also provided with a limiting groove, which is connected to the air passage.

[0019] A further technical solution is that the inner wall of the sleeve is provided with a protrusion, which is connected to the limiting groove, or the protrusion is connected to the pressure-bearing part.

[0020] In a second aspect, the present invention also provides a battery comprising a battery casing as described in any of the embodiments of the first aspect above.

[0021] Thirdly, the present invention also provides an electrical device comprising a battery as described in any of the embodiments of the second aspect above, the battery being used to provide electrical energy.

[0022] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include: simplifying the connection method between electronic products and batteries, with the positive and negative terminals located on the same side, the structure of the housing being simple, the top of the housing being electrically connected to the electronic product, and the housing being separated from the electronic product by pulling the base at the bottom of the housing, thus simplifying the structure of the removable battery. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 is a schematic diagram of a battery casing structure provided in an embodiment of the present invention; Figure 2 is a schematic diagram of another battery casing structure provided in an embodiment of the present invention; Figure 3 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 4 is a cross-sectional view at AA in Figure 3; Figure 5 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 6 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 7 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 8 is a cross-sectional view at BB in Figure 7; Figure 9 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 10 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 11 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 12 is a cross-sectional view of yet another battery casing structure provided in an embodiment of the present invention; Figure 13 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 14 is a cross-sectional view of Figure 13; Figure 15 is a schematic diagram of yet another battery casing structure provided in an embodiment of the present invention; Figure 16 is a cross-sectional view of Figure 15; Figure 17 is a schematic diagram of a casing structure provided in an embodiment of the present invention; Figure 18 is a schematic diagram of another casing structure provided in an embodiment of the present invention; Figure 19 is a cross-sectional view of a casing and a pressure-bearing part provided in an embodiment of the present invention; Figure 20 is a schematic diagram of another battery casing structure provided in an embodiment of the present invention; Figure 21 is a schematic diagram of another battery casing structure provided in an embodiment of the present invention; Figure 22 is a partial enlarged view of Figure 21; Figure 23 is a schematic diagram of another casing structure provided in an embodiment of the present invention; Figure 24 is a partial enlarged view of Figure 23; Figure 25 is a schematic diagram of a casing and pressure-bearing part structure provided in an embodiment of the present invention; Figure 26 is a schematic diagram of another casing and pressure-bearing part structure provided in an embodiment of the present invention; Figure 27 is a schematic diagram of yet another casing and pressure-bearing part structure provided in an embodiment of the present invention; Figure 28 is a schematic diagram of yet another casing and pressure-bearing part structure provided in an embodiment of the present invention.

[0025] Reference numerals in the attached diagram: 1. Housing; 2. Positive terminal; 3. Negative terminal; 11. Base; 12. Pressure bearing part; 4. Charging module; 13. Charging port; 14. Air hole; 15. Air passage; 5. Sleeve; 16. Limiting part; 111. Pull ring; 17. I-shaped pull ring. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terminology used in this specification of embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the invention. As used in this specification of embodiments of the invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] Referring to Figures 1-28, this embodiment of the invention provides a battery casing. The battery casing includes a casing 1, a positive terminal 2, and a negative terminal 3; a base 11 is fixedly provided at the bottom of the casing 1; at least one pressure-bearing portion 12 is provided on the outer surface of the casing 1; the positive terminal 2 and the negative terminal 3 are respectively located at the top of the casing 1. The specific details of each component are as follows: The cross-section of the casing 1 is any one of a circle, an ellipse, or a rhombus. It should be noted that the cross-sectional shape of the casing 1 being a circle, an ellipse, or a rhombus is merely an example; those skilled in the art can use casing 1 with other cross-sectional shapes, which will not exceed the protection scope of this invention. In this embodiment, the casing 1 has a circular cross-section and is made of any one of the following materials: steel, aluminum, polycarbonate (PC), polyethylene (PE), and polytetrafluoroethylene (PTFE). The casing 1 and the internal chemical system constitute a complete single battery cell. In one embodiment, the casing 1 can house a complete core, such as: a battery cell, a stacked core (a semi-finished battery cell prepared using a stacking process but not encapsulated, including the positive electrode, separator / electrolyte, and negative electrode), or a wound core (a semi-finished battery cell prepared using a winding process but not encapsulated, including the positive electrode, separator / electrolyte, and negative electrode). The casing 1 serves to fix and fully seal the internal electrochemical system (when the internal part is a finished battery, the fully sealed system is formed by the battery's encapsulation material). The top of the casing 1 is respectively provided with a positive terminal 2 and a negative terminal 3, i.e., the positive terminal 2 and negative terminal 3 are installed on the same side of the casing 1. In one embodiment, the positive terminal 2 and negative terminal 3 adopt a concentric circle structure with the inner positive and outer negative to effectively avoid reverse polarity. Alternatively, the positive terminal 2 and negative terminal 3 are distributed left and right, and their distances from the center of the circle are not equal, forming a non-centrally symmetrical shape, which can effectively avoid reverse polarity. In this embodiment, the pressure-bearing part 12 and the casing 1 can be manufactured by an integral molding process, or they can be independent components fixed to the casing 1. There are multiple pressure-bearing parts 12, which are evenly distributed and surround the casing 1. The pressure-bearing parts 12 are located on the outer surface of the casing 1, and are located on the side of the casing 1 near the bottom. In one embodiment, the number of pressure-bearing portions 12 is one. For example, referring to Figures 13-14, the pressure-bearing portion 12 is a strip-shaped structure with a thickness of 0.05 mm, distributed along the circumference of the housing 1. Understandably, the closer the pressure-bearing portion 12 is to the base 11, the easier it is to separate the housing 1 from the outer casing of the electronic device. As another example, referring to Figures 15-16, the pressure-bearing portion 12 is a sheet-shaped structure distributed along the circumference of the housing 1. Understandably, the greater the thickness of the pressure-bearing portion 12, the more difficult it is to separate the housing 1 from the outer casing of the electronic device. Typically, the minimum thickness of the pressure-bearing portion 12 is 0.05 mm.When the battery made of housing 1 is inserted into the electronic device, the pressure-bearing part 12 of the protruding portion is squeezed and deformed, so that the battery is firmly embedded in the housing of the electronic device. The battery will not come out without a certain external force. It should be noted that those skilled in the art can flexibly adjust the number, shape and position of the pressure-bearing part 12 on the housing 1, thereby changing the embedding effect. For example, the pressure-bearing part 12 is threaded continuously. Or, for example, the pressure-bearing part 12 is located on the housing 1 near the base 11 and the pressure-bearing part 12 is connected to the base 11, so that the housing 1 can be easily inserted / pulled out of the housing of the electronic device. The pressure-bearing part 12 is located on the housing 1 away from the base 11, which can enhance the firmness of the housing 1 in the housing of the electronic device. The base 11 can be made of insulating material, or it can be made of steel or aluminum. It is fixedly connected to the bottom of the housing 1. In one embodiment, the base 11 and the housing 1 are integrally die-cast. The positive terminal 2 is a centrally protruding cover component made of conductive metal. The negative terminal 3 is a component with an annular notch at the center, made of conductive metal. The annular notch is connected to the communication port of the microphone (gas sensor) on the circuit board. The radial width of the notch is less than 1 mm. The surface tension of the liquid can prevent the liquid from entering the circuit board. When used on the atomizer, the liquid at the communication port can be drawn out. Usually, insulating material is filled between the positive terminal 2 and the negative terminal 3 to prevent short circuits caused by contact between the positive terminal 2 and the negative terminal 3. It should be noted that the thickness, length, and shape of the base 11 are not specifically limited. It can be understood that the longer the base 11 is, the more convenient it is for the user to remove it. See Figures 17 and 18. Figure 17 is a schematic diagram of a housing structure provided by an embodiment of the present invention, and Figure 18 is a schematic diagram of another housing structure provided by an embodiment of the present invention.

[0030] In specific implementation, the interior of the housing 1 can also be equipped with energy storage modules, such as: capacitor cells, aluminum-cased cells, polymer cells, wound cells, stacked cells, etc. The housing 1 is used to fix the energy storage modules and is electrically connected to the energy storage modules through the positive terminal 2 and the negative terminal 3 respectively. In actual scenarios, depending on the distribution of the positive and negative terminal ears of the cell, the positive terminal 2 can be connected to the positive terminal ear by pre-setting conductive leads in the housing 1, or the negative terminal 3 can be connected to the negative terminal ear by pre-setting conductive leads. Alternatively, the housing 1 made of conductive metal material can be directly connected to the negative terminal ear of the cell, so that the entire housing 1 serves as the negative terminal. When housing 1 is used in an atomizer, a circuit board is also provided inside housing 1. The circuit board has a start-up module, such as a gas sensor microphone. Furthermore, the positive terminal 2 has a hollow structure with a diameter less than 1 mm. In this embodiment, the greater the surface tension of the liquid, the closer the diameter of the hollow structure is to 1 mm; the smaller the surface tension of the liquid, the further the diameter of the hollow structure is from 1 mm. It should be noted that the specific calculation principle of the liquid surface tension can be determined with reference to existing materials, and this invention does not specifically limit it. The diameter of the hollow structure is equal from bottom to top, or the diameter of the hollow structure gradually increases from bottom to top (the part closer to the gas sensor is denoted as bottom, and the part farther from the gas sensor is denoted as top). With this design, the positive terminal 2, due to the surface tension of the liquid, will form water droplets on the metal surface and will not enter the interior of housing 1 without external force. Therefore, when the diameter of the hollow structure of the positive terminal 2 is relatively small, the surface tension is greater than the weight of the liquid, and the liquid remains on the surface of the positive terminal 2 and will not enter the interior of housing 1 along the hole. Furthermore, making the hollow structure with equal diameters from bottom to top, or with a diameter that gradually increases from bottom to top, allows the liquid to be expelled by external force each time the sensor is activated, even when subjected to forces other than gravity, thus protecting the sensor. Further, making the hollow structure with a gradually increasing aperture from bottom to top increases the difficulty of liquid entering the sensor and reduces the difficulty of liquid expulsion. Since gas sensors operate by sensing changes in gas, they must have vertical connections to conduct gas and control the activation and closure of the circuit. Therefore, it is impossible to make gas sensors completely waterproof and oil-proof. Prolonged immersion of the gas sensor microphone in liquid will damage it. If the hollow structure has a lower aperture diameter larger than the upper aperture diameter, water and oil will enter the housing 1 and become unable to escape, ultimately damaging the gas sensor.

[0031] In one embodiment, referring to Figure 25, the longitudinal cross-sectional shape of the housing 1 can be a trapezoid with a narrower top and a wider bottom, and the pressure-bearing part 12 is independently fixed to the housing 1. In another embodiment, referring to Figures 26-28, the pressure-bearing part 12 and the housing 1 are manufactured by an integral molding process, and the thickness of the pressure-bearing part 12 is the difference between the maximum outer diameter and the minimum outer diameter of the housing 1. It should be noted that the battery housing usually has a recessed area, where an explosion-proof valve is formed. Understandably, when measuring or defining the outer diameter reference of the battery housing, the explosion-proof valve recessed area is not used as an evaluation basis.

[0032] The technical effects achieved by this battery casing are as follows: It simplifies the connection between electronic products and batteries. The positive terminal 2 and the negative terminal 3 are located on the same side, which avoids short circuits and fires caused by reverse battery installation. The structure of the casing 1 is simple. The top of the casing 1 is electrically connected to the electronic product. Pulling the base 11 at the bottom of the casing 1 can separate the casing 1 from the electronic product, which simplifies the structure of the removable battery.

[0033] Referring again to Figures 1-28, in this embodiment, a charging module 4 is also included. The outer surface of the housing 1 is also provided with a charging port 13. The charging module 4 is disposed inside the housing 1, and the charging port 13 is connected to the charging module 4.

[0034] Specifically, the charging module 4 includes a circuit board with multiple charging components, such as charging interfaces (Micro USB, Type-C, Lightning, and pin contacts). The housing 1 has a pre-drilled charging port 13, which is an opening in the housing 1. In this embodiment, the charging module 4 is located inside the housing 1, near the top. In another embodiment, referring to Figure 10, the charging module 4 and the charging port are located near the bottom of the housing 1. For example, the charging port 13 is located on the base 11, allowing the battery to be charged without being removed from the product. In other embodiments, the base 11 is detachably connected to the housing 1, with the base 11 covering the lower opening of the housing 1, and the charging port 13 located on the base 11.

[0035] Furthermore, the housing 1 is also provided with an air hole 14 and an air passage 15, the air passage 15 being connected to the air hole 14 and the charging port 13 respectively.

[0036] Specifically, an air hole 14 can be reserved at the bottom of the housing 1 to connect the inside of the housing 1 with the outside, enabling gas conduction between the inside of the housing 1 and the outside. In one embodiment, the housing 1 is used in an atomizer, and the air hole 14 added to the bottom of the housing 1 can conduct the gas generated by the atomizer, preventing the gas generated by the atomizer from clogging inside the housing 1. The air passage 15 is located on the outer surface of the housing 1. It should be noted that those skilled in the art can flexibly adjust the shape of the air passage 15 and its distribution position on the housing 1 to enable communication between the charging module 4 inside the housing 1 and the outside of the housing 1.

[0037] Furthermore, the housing 1 is also provided with a limiting part 16, and the negative terminal 3 is disposed on the limiting part 16.

[0038] Specifically, the limiting part 16 is on the inner wall of the housing 1. In this embodiment, the negative terminal 3 has a notched annular component at its center, which is made of conductive metal material. The preset limiting part 16 can prevent damage to the internal structure of the battery when installing the negative terminal 3.

[0039] Furthermore, the outer diameter of the base 11 is larger than the outer diameter of the housing 1.

[0040] Specifically, when the outer diameter of the base 11 is larger than that of the housing 1, the height of the base 11 can be reduced accordingly, so that the battery housing can also be conveniently inserted / pulled out of the housing of the electronic device, and the exposed length of the base 11 in the housing 1 is reduced, making it more aesthetically pleasing.

[0041] Furthermore, it also includes a sleeve 5, in which the housing 1 and the pressure-bearing part 12 are respectively embedded. The outer diameter of the sleeve 5 is less than or equal to the outer diameter of the base 11.

[0042] Specifically, the sleeve 5 is used for installation on electrical equipment. In one embodiment, the sleeve 5 is fixedly installed on the electrical device, such as an atomizer. The outer diameter of the housing 1 is smaller than the inner diameter of the sleeve 5. The housing 1 and the sleeve 5 are detachably connected through the pressure-bearing part 12 of the housing 1. In one embodiment, the distance between the outer diameter of the housing 1 and the inner diameter of the sleeve 5 is in the range of 0.05mm to 0.35mm. When the distance between the outer diameter of the housing 1 and the inner diameter of the sleeve 5 is 0.05mm, the elastic pressure-bearing part 12 can deform and snap into the sleeve 5. Without the action of external force, the housing 1 and the sleeve 5 have high connection stability. When subjected to external force, the housing 1 can be easily removed from the sleeve 5. The outer diameter of the base 11 is larger than the outer diameter of the sleeve 5. Understandably, the difference in outer diameter between the base 11 and the sleeve 5 is ≤0.8mm. For example, after the battery casing is embedded inside the sleeve 5, the difference in outer diameter between the base 11 and the sleeve 5 is 0.08mm. A 2mm force point is formed at the contact point between the base 11 and the sleeve 5. The user can hold the sleeve 5 with one hand and pull outwards by grabbing this force point with the other hand, achieving quick separation of the casing 1 from the sleeve 5. Alternatively, if the difference in outer diameter between the base 11 and the sleeve 5 is 0mm, the length of the base 11 can be appropriately increased. The user can hold the sleeve 5 with one hand and pull outwards by grabbing the base 11 with the other hand, achieving quick separation of the casing 1 from the sleeve 5. In other embodiments, the base 11 may also have a pre-reserved annular groove. A rope can be looped around the annular groove of the base 11, allowing the user to pull the casing 1 out of the electrical device by holding the rope. The rope looped around the annular groove provides a more secure force point, enabling rapid separation of the battery from the electrical device. The specific values ​​for the outer diameter of the housing 1 and the inner diameter of the sleeve 5 can be determined according to the material of the housing 1. When the housing 1 is made of one or more of the following metal materials: alloy, steel, aluminum, etc., the thickness of the pressure-bearing part 12 ranges from 0.05mm to 0.15mm, and 0.1mm is usually selected. When the housing 1 is made of plastic, resin and rubber materials, the thickness of the pressure-bearing part 12 is the radial height of the pressure-bearing part 12 on the housing 1, and the thickness of the pressure-bearing part 12 ranges from 0.05mm to 0.35mm, and 0.2mm is usually selected.

[0043] When the pressure-bearing parts 12 are distributed laterally on the housing 1 and form a ring around the housing 1, the thickness of the pressure-bearing parts 12 ranges from 0.05 to 0.10 mm, and 0.08 mm is usually selected. When the pressure-bearing parts 12 are distributed longitudinally on the housing 1 and multiple parts are evenly spaced and fill a ring around the housing 1, the thickness of the pressure-bearing parts 12 ranges from 0.15 mm to 0.35 mm, and 0.2 mm is usually selected. Understandably, the greater the thickness of the pressure-bearing parts 12, the greater the connection strength between the battery and the casing. The thickness of the pressure-bearing parts 12 can be adjusted according to the material, number, and position of the pressure-bearing parts 12. When the pressure-bearing parts 12 are made of soft material, the thickness of the pressure-bearing parts 12 can be appropriately increased. When there are multiple pressure-bearing parts 12, the thickness of the pressure-bearing parts 12 gradually increases from top to bottom.

[0044] Furthermore, the base 11 is provided with a pull ring 111.

[0045] Specifically, referring to Figure 11, the pull ring 111 and the base 11 can be integrally die-cast, or a shaft hole is pre-drilled in the base 11, through which the pull ring 111 passes to achieve a fixed connection between the pull ring 111 and the base 11. The pull ring 111 facilitates pulling the housing 1 to separate the battery from the electrical product. It should be noted that the pull ring 111 is a structure for assisting disassembly. Considering that some users may lack the strength to remove the battery from the charging device, in other embodiments, referring to Figure 12, an I-shaped pull ring 17 is also provided. A rope is fitted inside the I-shaped pull ring 17, and pulling the rope can separate the housing 1 from the electrical product. Ideally, referring to Figures 23-24, the base 11 is provided with an I-shaped pull ring 17. When the base 11 is inserted into the sleeve 5, the bottom surface of the sleeve 5 is flush with the bottom surface of the base 11. This battery housing provides convenient insertion / removal of the housing 1 from the sleeve 5 and is more aesthetically pleasing. In some other embodiments, the base 11 has a pre-drilled rope hole. A portion of the rope is passed through the rope hole and placed inside the battery. This portion of the rope is knotted or deformed by high temperature so that it is stuck inside the battery. By pulling the rope, the casing 1 can be separated from the electrical product.

[0046] Furthermore, the thickness of the pressure-bearing part 12 gradually increases from top to bottom.

[0047] Specifically, the top of housing 1 is referred to as the upper part, and the bottom of housing 1 is referred to as the lower part. Typically, the top of housing 1 enters the electrical equipment first. As shown in Figure 19, the thickness of the pressure-bearing part 12 gradually increases from top to bottom, forming a wedge shape. A wedge is a solid object used to strengthen, support, or maintain a fixed position. It is often used to insert into tenons or gaps to fix or block. The wedge-shaped pressure-bearing part 12 can effectively strengthen the connection between housing 1 and electrical equipment, and makes it easier to embed the battery into the casing of electronic equipment.

[0048] Furthermore, the thickness of the pressure-bearing part 12 ranges from 0.05 mm to 0.35 mm.

[0049] In the integral forming process of the shell 1 and the pressure-bearing part 12, the existing technology requires that the thickness of the pressure-bearing part 12 be precisely controlled to 0.02mm. However, the processing accuracy requirement of 0.02mm is too high, and the production cost is difficult to control. In this embodiment, the thickness parameter of the pressure-bearing part 12 is relaxed to the range of 0.05mm to 0.35mm, which significantly reduces the processing accuracy requirement, improves the economy of mass production, and is more suitable for large-scale production. Specifically, multiple pressure-bearing parts 12 are evenly distributed on the side of the shell 1. Let the radius of the shell 1 be r, and the distance from the pressure-bearing part 12 to the axis of the shell 1 is within the range of r+0.05mm to r+0.35mm. For example, the pressure-bearing part 12 is made of elastic material with a thickness of 0.3mm, and the distance between the outer diameter of the shell 1 and the inner diameter of the sleeve 5 is 0.2mm. The pressure-bearing part 12 can be fully squeezed between the shell 1 and the sleeve 5 to fix the shell 1 and the sleeve 5 and prevent loosening and separation.

[0050] Typically, the pressure-bearing part 12 is made of an elastic material.

[0051] Specifically, the elastic material includes silicone, styrene-butadiene rubber, neoprene rubber, polyurethane, propylene-based elastomers, and polyester elastomers. In one embodiment, the elastic pressure-bearing part 12 can reduce wear on the pressure-bearing part 12 by the sleeve 5 when it is installed into the sleeve 5, which can effectively increase the number of times the battery can be disassembled. Moreover, the pressure-bearing part 12 is squeezed by the housing 1 and the sleeve 5, which can improve the connection stability between the battery and the sleeve 5.

[0052] In one embodiment, the pressure-bearing part 12 is made of heat-shrink tubing, typically PVC. PVC is a plastic material with insulating properties. The pressure-bearing part 12 is formed by stacking multiple layers of PVC material after heat shrinking. Heat-shrink tubing has the characteristic of shrinking when heated, making the manufacturing process simpler. For example, a heat-shrink tubing of a preset thickness shrinks to a thickness of 0.02 mm after heating. Adjusting the number of layers of heat-shrink tubing can correspondingly change the thickness of the pressure-bearing part 12, achieving high-precision adjustment of the thickness of the pressure-bearing part 12 while maintaining low cost.

[0053] The present invention also provides a battery comprising a battery casing as described in any of the above embodiments.

[0054] Specifically, when the battery is loaded into the electrical device, the pressure-bearing part 12 on the side of the housing 1 will lock the battery into the outer shell of the electrical device, so that the battery will not slide out of the outer shell of the electrical device without external force. Under the action of external force, since the battery and the electrical device are not locked, it can be easily separated from the outer shell of the electrical device. This battery structure is simple and simplifies the structure of detachable batteries.

[0055] The present invention also provides an electrical device comprising a battery as described in any of the above embodiments, the battery being used to provide electrical energy.

[0056] Specifically, the electrical devices include mobile phones, atomizers, flashlights, etc. In one embodiment, the sleeve 5 can be fixedly installed on the electrical device to realize the detachable connection between the battery and the sleeve 5.

[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms should not be construed as necessarily referring 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0063] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims and their equivalents, this invention also intends to include these modifications and variations.

[0064] The above description describes specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A battery casing, characterized in that, Includes the shell, positive terminal, and negative terminal; A base is fixedly provided at the bottom of the housing; The outer surface of the shell is provided with at least one pressure-bearing part; The positive terminal and the negative terminal are respectively located on the top of the housing.

2. The battery casing according to claim 1, characterized in that, The housing is also provided with a limiting part, and the negative terminal is disposed on the limiting part.

3. The battery casing according to claim 1, characterized in that, The outer diameter of the base is larger than the outer diameter of the housing.

4. The battery casing according to claim 1, characterized in that, The pressure-bearing part is made of heat-shrink tubing.

5. The battery casing according to claim 1, characterized in that, The base is equipped with a pull ring.

6. The battery casing according to claim 1, characterized in that, The thickness of the pressure-bearing part gradually increases from top to bottom.

7. The battery casing according to claim 1, characterized in that, The thickness of the pressure-bearing part ranges from 0.05 mm to 0.35 mm.

8. The battery casing according to claim 1, characterized in that, It also includes a charging module, and the outer surface of the housing is provided with a charging port. The charging module is located inside the housing, and the charging port is connected to the charging module.

9. The battery casing according to claim 8, characterized in that, The housing is also provided with air holes and air channels, and the air channels are respectively connected to the air holes and the charging port.

10. A battery, characterized in that, Includes the battery casing as described in any one of claims 1-9.

11. An electrical appliance, characterized in that, Includes the battery as described in claim 10, the battery being used to provide electrical energy.

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