Soft package battery and electronic atomization device

Abstract

The utility model discloses a soft package battery and an electronic atomization device. The soft package battery comprises a battery cell, a thermal shrinkage film, two metal shells and two groups of highland barley paper, the battery cell comprises a main body and two tabs respectively arranged at two end parts of the main body; the two metal shells are respectively arranged at two end parts of the battery cell in a sleeving manner; each group of highland barley paper comprises first highland barley paper and second highland barley paper; the first highland barley paper is arranged between the tab and the main body along the axial direction in an insulating manner, and the second highland barley paper is arranged between the tab and the metal shell along the axial direction in an insulating manner; and the thermal shrinkage film is wrapped outside the battery cell and the two metal shells. The application scene of the soft package battery can be expanded.

Description

Technical Field

[0001] This application relates to the field of electronic atomization technology, specifically to a soft-pack battery and an electronic atomization device. Background Technology

[0002] Pouch batteries are generally used to power e-cigarette devices. However, due to their irregular shape, if the e-cigarette device has a transparent casing, the deformation of the pouch battery will affect the aesthetics of the device, thus limiting the application scenarios of pouch batteries. Utility Model Content

[0003] This application provides a pouch battery and an electronic atomizing device to solve the problem of limited application scenarios for pouch batteries.

[0004] In one embodiment, a pouch battery is provided, comprising:

[0005] A battery cell includes a main body and two tabs respectively disposed at both ends of the main body;

[0006] Two metal casings are respectively fitted onto both ends of the battery cell;

[0007] Two sets of barley paper, each set comprising a first set of barley paper and a second set of barley paper; the first set of barley paper is axially insulated between the electrode tab and the main body, and the second set of barley paper is axially insulated between the electrode tab and the metal shell; and

[0008] Heat shrink film is wrapped around the battery cell and the two metal shells.

[0009] In some embodiments, the metal shell defines a through hole; the end of the electrode tab passes through the through hole.

[0010] In some embodiments, both the first barley paper and the second barley paper are in the form of D-shaped sheets.

[0011] In some embodiments, the arc-shaped edge of the second barley paper is adapted to the circumferential contour of the end of the soft-pack battery, and the position of the straight edge corresponds to the position of the through hole.

[0012] In some embodiments, the arc-shaped edges of the first barley paper and the second barley paper are adapted to the circumferential contour of the end of the soft-pack battery.

[0013] In some embodiments, the battery cell is further provided with high-temperature adhesive tape, which is applied to both ends and sides of the battery cell; the barley paper is disposed axially between the high-temperature adhesive tape and the metal shell.

[0014] In some embodiments, the high-temperature adhesive tape includes a first part, a second part, and a third part; the third part is axially attached to the side sealing edge of the battery cell, and the first part and the second part are respectively attached to the folded edges at both ends of the battery cell and partially overlap with the third part.

[0015] In some embodiments, the metal casing is a stainless steel casing.

[0016] In some embodiments, the heat-shrinkable film is cylindrical, including tubular sidewalls and endwalls disposed at both ends of the sidewalls; the endwalls are annular and cover at least a portion of the end face where the metal shell is located.

[0017] An electronic atomizing device is provided, comprising the pouch battery described in any of the foregoing embodiments.

[0018] According to the above embodiments of the pouch battery and electronic atomizing device, by incorporating a metal shell and heat-shrink film, the structural strength and shape regularity of the pouch battery can be improved, enhancing its mechanical strength and impact resistance, preventing the risk of deformation caused by collisions, stacking pressure, or assembly stress, thereby expanding the application scenarios of the pouch battery. By incorporating a first layer of barley paper and a second layer of barley paper, its buffering capacity against mechanical impacts can be further improved, thereby further enhancing its structural strength, reducing the risk of deformation, and further expanding the application scenarios of the pouch battery. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a pouch battery in one embodiment;

[0020] Figure 2 yes Figure 1 The diagram shows the structure of the pouch cell from another angle.

[0021] Figure 3 yes Figure 1 The exploded view of the pouch cell shown.

[0022] The accompanying diagrams are labeled as follows:

[0023] 1-Battery cell; 11-Taper; 111-Bending section; 12-Main body; 2-High temperature adhesive paper; 21-First part; 211-First wall; 212-Second wall; 22-Second part; 23-Third part; 3-Barley paper; 31-First barley paper; 32-Second barley paper; 4-Metal shell; 41-Through hole; 5-Heat shrink film; 51-Side wall; 52-End wall. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0025] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0026] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages).

[0027] like Figures 1 to 3 As shown, this application provides a pouch battery that can provide power for the operation of electronic devices. The pouch battery may include a battery cell 1, high-temperature adhesive tape 2, a metal casing 4, heat-shrink film 5, and two sets of barley paper 3.

[0028] The battery cell 1 includes a main body 12 and two tabs 11. The main body 12 is used to store energy and convert it through an electrochemical reaction. The two tabs 11 are respectively disposed at both ends of the main body 12 for electrical connection with electronic devices to supply power to the electronic devices.

[0029] The high-temperature adhesive tape 2 is applied to the sealing edges at both ends and the side of the battery cell 1, providing preliminary insulation protection for the battery cell 1, preventing the tabs 11 from shifting and short-circuiting, while also preventing the battery cell 1 from contacting external conductive materials, and enhancing the stability of the soft-pack battery structure.

[0030] Two sets of barley paper 3 are respectively set at both ends of the battery cell 1 to provide insulation protection between the tab 11 and the main body 12 and the metal shell 4, to avoid short circuits, and at the same time to mitigate mechanical shock or vibration.

[0031] There are also two metal shells 4, which are respectively fitted onto the two ends of the overall structure composed of battery cell 1, high-temperature adhesive paper 2, and barley paper 3. They are used to provide rigid support for battery cell 1, protect battery cell 1 from physical damage such as squeezing and puncture, and also assist in heat dissipation.

[0032] The heat shrink film 5 is applied to the outside of the overall structure consisting of the battery cell 1, high-temperature adhesive tape 2, metal shell 4, and barley paper 3, to act as a protective encapsulation, blocking moisture, oxygen, and electrolyte, and ensuring the relative airtightness of the soft-pack battery.

[0033] It should be understood that this pouch battery can be used in electronic devices in various fields such as aerosol generation devices, electronic atomization devices, mobile terminals, smart wearable devices, aircraft, and power banks, without being specifically limited here.

[0034] In some embodiments, the body 12 may be generally cylindrical to form a cylindrical pouch battery, adaptable to cylindrical electronic devices such as electronic atomizing devices. When the casing of the electronic device is transparent, the shape adaptation can improve the aesthetics of the device, thereby expanding the application scenarios of the pouch battery.

[0035] Of course, the pouch battery can also be made into other shapes such as cube, polygonal column, elliptical column, or irregular shape.

[0036] It should be understood that the battery cell 1 can be made of existing technology. For example, the main body 12 can be composed of existing components such as a diaphragm and an electrolyte contained within the diaphragm. The diaphragm can be made of materials such as polyethylene (PE) and polypropylene (PP), and the electrolyte can be made of materials such as lithium salt, organic solvent, and additives. No specific limitations are made here.

[0037] like Figure 3 As shown, in some embodiments, the high-temperature adhesive tape 2 may include a first part 21, a second part 22, and a third part 23. The first part 21 and the second part 22 are respectively attached to the folded edges at both ends of the battery cell 1 to prevent the tabs 11 from shifting during charging, discharging, or vibration of the pouch battery, thus avoiding poor contact or breakage. They also reduce metal fatigue caused by repeated bending of the tabs 11 and isolate the tabs 11 from surrounding metal components (such as the metal casing 4), preventing short circuits. The third part 23 is axially attached to the side sealing edge of the battery cell 1 to fix the internal structure of the battery cell 1, preventing the separator or electrode plates from shifting, and also preventing short circuits and improving packaging strength.

[0038] Specifically, both the first part 21 and the second part 22 can be roughly ring-shaped. The first part 21 will now be used as an example to further illustrate both.

[0039] Specifically, the first part 21 includes a first wall 211 and a second wall 212. The first wall 211 is short and tubular, and the second wall 212 is annular. The second wall 212 is located at one end of the battery cell 1, and one end of the first wall 211 surrounds the second wall 212 circumferentially. The second wall 212 is similar and will not be described again here. The third part 23 is a long strip and is attached along the side sealing edge of the battery cell 1.

[0040] In the specific operation, the third part 23 can be first attached to the side sealing edge of the battery cell 1 along the axial direction of the battery cell 1, and then the first part 21 and the second part 22 can be attached to the folded edges at both ends of the battery cell 1 respectively. After the high-temperature adhesive tape 2 is assembled with the battery cell 1, the two ends of the third part 23 are connected to the first part 21 and the second part 22 respectively.

[0041] It should be understood that the first part 21 and the second part 22 are respectively attached to the folded edges at both ends of the battery cell 1, which can be understood as being attached to the top bends of the tabs 11 at both ends of the main body 12. The third part 23 is attached axially to the side sealing edge of the battery cell 1, which can be understood as being attached to the side edge of the main body 12 after it is stacked or wound. This will not be elaborated further here.

[0042] It should be understood that the high-temperature adhesive tape 2 must possess properties such as high temperature resistance, insulation, resistance to electrolyte corrosion, and strong adhesion. It can be manufactured using existing technologies. For example, it can consist of a substrate and an adhesive. The substrate can be made of materials such as polyimide (PI, Kapton), polyester film (PET), or polyethylene naphthalate (PEN). The adhesive can be made of materials such as acrylic, silicone, or epoxy resin. No specific limitations are specified here.

[0043] Continue reading Figure 3 In some embodiments, each set of barley paper 3 includes a first set of barley paper 31 and a second set of barley paper 32. The two sets of barley paper 3 are located between the high-temperature adhesive paper 2 and the metal shell 4 along the axial direction of the soft-pack battery. The barley paper 3 located at one end will be used as an example for further explanation.

[0044] The first barley paper 31 is disposed along the axial direction of the pouch battery between the tab 11 and the main body 12 to insulate the tab 11 from the main body 12. The second barley paper 32 is disposed along the axial direction of the pouch battery between the tab 11 and the metal casing 4 to insulate the tab 11 from the metal casing 4. The first barley paper 31 and the second barley paper 32 cooperate to prevent short circuits in the tab 11. The barley paper 3 located at the other end of the pouch battery works similarly and will not be described further here.

[0045] During the actual assembly, the first barley paper 31 can be attached to the end of the overall structure after the battery cell 1 and the high-temperature adhesive paper 2 are assembled. Then, the exposed electrode 11 at the end is bent onto the first barley paper 31, so that the first barley paper 31 is sandwiched axially between the electrode 11 and the end of the overall structure after the main body 12 and the high-temperature adhesive paper 2 are assembled.

[0046] Furthermore, the second barley paper 32 is attached to the side of the tab 11 away from the battery cell 1, so that the first barley paper 31 and the second barley paper 32 are located on opposite sides of the tab 11, and the second barley paper 32 is sandwiched between the tab 11 and the metal shell 4 along the axial direction.

[0047] It should be understood that the tab 11 can be partially bent so that its end corresponds to the through hole 41 of the metal shell 4, so as to facilitate insertion therein. The end of the tab 11 that is connected to the body 12 is defined as the first end, the end opposite to the first end is defined as the second end, and the segment located between the first end and the second end and extending perpendicularly to the axis is defined as the bent segment 111.

[0048] After assembly, at least a portion of the first barley paper 31 is axially disposed between the bending section 111 and the end of the overall structure after assembly of the main body 12 and the high-temperature adhesive paper 2, and at least a portion of the second barley paper 32 is axially disposed between the bending section 111 and the metal shell 4.

[0049] By dividing the barley paper 3 into a first barley paper 31 and a second barley paper 32, the insulation protection of the tab 11 can be further improved. At the same time, while meeting the insulation requirements, it also facilitates the assembly of the tab 11 with the metal shell 4, thereby improving assembly efficiency.

[0050] This configuration also improves the structural strength of the pouch battery, provides elastic buffering, disperses stress, resists vibration fatigue, reduces the direct impact of the metal casing 4 on the cell 1, tabs 11, etc., and extends the buffer life.

[0051] When the battery cell 1 is cylindrical or has an arc-shaped end face, the double-layer barley paper arrangement can further improve insulation performance and ensure full coverage of the insulation layer by adjusting the shapes of the first barley paper 31 and the second barley paper 32 and the way they are stacked.

[0052] In some embodiments, the first barley paper 31 and the second barley paper 32 may be in the form of D-shaped sheets to adapt to the end face shape of the cylindrical soft-pack battery.

[0053] Furthermore, the D-shaped, curved edge can be adapted to the circumferential contour of the end of the pouch battery to improve the neatness of the assembled appearance and further expand the application scenarios of the pouch battery.

[0054] It should be understood that the curved edge of the D-shaped sheet is adapted to the circumferential contour of the end of the soft-pack battery. This can be understood as the curved edge being adapted to the circumferential contour of the end of the overall structure after the battery cell 1 and the high-temperature adhesive paper 2 are assembled.

[0055] It should be understood that the D-shaped shape of the first barley paper 31 and the second barley paper 32 can be a semi-circle, a minor arc shape, a major arc shape, etc. The specific shape and size of the first barley paper 31 and the second barley paper 32 can be adaptively adjusted according to the setting position of the first end of the electrode 11 on the main body 12 and the setting position of the through hole 41 on the metal shell 4, so as to ensure that the electrode 11 can be led out from the through hole 41 while facilitating assembly and preventing short circuits.

[0056] The shape and size of the first barley paper 31 and the second barley paper 32 may be the same or different. For example, the first barley paper 31 may be semi-circular, and the second barley paper 32 may be arc-shaped, etc. No specific limitation is made here.

[0057] Of course, the end face shapes of the overall structure after the first barley paper 31, the second barley paper 32, the battery cell 1, and the high-temperature adhesive paper 2 are assembled can be compatible or different. For example, when both the first barley paper 31 and the second barley paper 32 are circular, the overall structure after the battery cell 1 and the high-temperature adhesive paper 2 are assembled is rectangular columnar, and its end face is rectangular, etc.

[0058] In some other embodiments, the barley paper 3 may also be configured as a circle, polygon, ellipse, irregular shape or other shapes.

[0059] It should be understood that the barley paper 3 can be made using existing technology. For example, it can be made from natural fibers, synthetic fibers, composite materials, etc., without any specific limitations.

[0060] The barley paper 3 may have an adhesive layer on at least one side to facilitate attaching the barley paper 3 to the overall structure after the battery cell 1 and the high-temperature adhesive paper 2 are assembled.

[0061] like Figure 2 and Figure 3 As shown, in some embodiments, the metal shell 4 is provided with a through hole 41 for the tab 11 to pass through so as to bring out its second end.

[0062] Specifically, the metal shell 4 may be lid-shaped, including a top wall and side walls. The side walls surround the top wall circumferentially, so that the metal shell 4 can cover the end of the overall structure after the battery cell 1, high-temperature adhesive paper 2, and barley paper 3 are assembled. A through hole 41 is formed on the top wall.

[0063] It should be understood that the specific shape of the through hole 41 can be flexibly set according to the shape of the tab 11. For example, when the tab 11 is strip-shaped, the through hole 41 can be set to a long strip shape to facilitate the insertion of the tab 11. No specific limitation is made here.

[0064] By attaching metal shells 4 to both ends of the pouch battery, its structural strength and impact resistance can be improved, preventing deformation risks caused by collisions, stacking pressure, or assembly stress. When this pouch battery is used in devices such as electronic atomizing devices with transparent shells, it can also improve the aesthetics of the device and further expand the application scenarios of the pouch battery.

[0065] Meanwhile, the metal casing 4 can effectively absorb vibration energy, preventing the welding points of the tabs 11 or the internal structure from breaking due to vibration fatigue, thereby improving the service life of the pouch battery.

[0066] Compared to other casing materials, the choice of metal casing 4 improves the heat dissipation of the pouch battery, preventing localized overheating and reducing the risk of thermal runaway. Metal casing 4 also shields the pouch battery from electromagnetic interference generated by high-frequency charging and discharging, minimizing its impact on peripheral electronic components of the electronic devices in which it is used.

[0067] In some embodiments, when the barley paper 3 of the soft-pack battery is D-shaped, after assembly, the arc-shaped edge of the second barley paper 32 is adapted to the circumferential profile of the end of the overall structure after the battery cell 1 and the high-temperature adhesive paper 2 are assembled, and its size is such that its straight edge is correspondingly set with the through hole 41.

[0068] This configuration further facilitates the production and assembly of pouch batteries.

[0069] When assembling the barley paper 3 and the metal shell 4, the first barley paper 3 can be first attached to the end of the overall structure after the battery cell 1 and the high-temperature adhesive tape 2 are assembled. Then, the tab 11 at this end is bent onto the first barley paper 3, so that the tab 11 is insulated from the main body 12. Further, the arc-shaped edge of the second barley paper 32 is flush with the circumferential contour of the end and attached to the position where the bent section 111 of the tab 11 is located, and the straight edge of the second barley paper 32 is perpendicular to the extension direction of the bent section 111.

[0070] Furthermore, the portion of the tab 11 exposed outside the second barley paper 32 can be bent outward along the straight edge of the second barley paper 32. Since the straight edge of the second barley paper 32 corresponds to the through hole 41, the bending position of the tab 11 corresponds to the through hole 41. When the metal shell 4 is placed on this end, the tab 11 can be directly inserted into the through hole 41.

[0071] It should be understood that the metal shell 4 can be made of materials such as stainless steel, aluminum alloy, titanium alloy, nickel-plated steel, magnesium alloy, and copper alloy, without any specific limitation here.

[0072] At the through-hole 41 of the metal shell 4, a physical isolation barrier can be formed using existing technologies, such as inserting an insulating bushing or a ceramic ring, to prevent short circuit of the tab 11. No specific limitations are specified here.

[0073] In some embodiments, the heat-shrink film 5 is fitted outside the overall structure formed by the battery cell 1, high-temperature adhesive paper 2, barley paper 3, and metal shell 4, which can provide mechanical protection and environmental protection while further preventing short circuits.

[0074] Meanwhile, the combination of the heat-shrink film 5 and the metal shell 4 can further improve the structural strength of the soft-pack battery, enhance its mechanical strength and impact resistance, maintain its regular shape, and improve its aesthetic appearance.

[0075] Specifically, such as Figure 2 and Figure 3 As shown, the heat-shrinkable film 5 can be in the form of a hollow cylinder, including a tubular sidewall 51 and end walls 52 located at both ends of the sidewall 51. The end wall 52 can be annular, covering at least a portion of the metal shell 4 at the end, so as to confine the metal shell 4 at the end.

[0076] It should be understood that the heat-shrink film 5 can be produced and assembled onto the pouch battery using existing technologies. For example, it can be made of materials such as cross-linked polyolefin (XLPO) and assembled through processes such as film coating, heat shrinking, and cooling. No specific limitations are made here.

[0077] This application also provides an electronic atomizing device (not shown in the figures) that can heat and atomize an atomizing liquid to generate an aerosol for user use. The electronic atomizing device may include a housing, an atomizing component, and a pouch battery as described in any of the foregoing embodiments. The pouch battery and the atomizing component are housed within the housing. The pouch battery is electrically connected to the atomizing component to enable its atomization function. The atomizing component can heat and atomize the atomizing liquid after being powered on, generating an aerosol for user use.

[0078] In some embodiments, the outer casing may be at least partially transparent. The pouch battery may be located in the transparent portion of the outer casing. The arrangement of the metal casing 4 and heat-shrink film 5, etc., ensures the regularity of the shape of the pouch battery within the outer casing, thereby ensuring the aesthetic appearance of the electronic atomizing device and preventing deformation of the pouch battery due to transportation or impact, thus ensuring the user's experience.

[0079] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A soft-pack battery, characterized in that, include: The battery cell (1) includes a main body (12) and two tabs (11) respectively disposed at both ends of the main body (12); Two metal shells (4) are respectively fitted onto the two ends of the battery cell (1); Two sets of barley paper (3), each set of barley paper (3) includes a first barley paper (31) and a second barley paper (32); the first barley paper (31) is axially insulated between the tab (11) and the main body (12), and the second barley paper (32) is axially insulated between the tab (11) and the metal shell (4); and Heat shrink film (5) is wrapped around the battery cell (1) and the two metal shells (4).

2. The soft-pack battery according to claim 1, characterized in that, The metal shell (4) defines a through hole (41); the end of the tab (11) passes through the through hole (41).

3. The soft-pack battery according to claim 2, characterized in that, Both the first barley paper (31) and the second barley paper (32) are D-shaped sheets.

4. The soft-pack battery according to claim 3, characterized in that, The arc-shaped edge of the second barley paper (32) is adapted to the circumferential contour of the end of the soft-pack battery, and the position of the straight edge corresponds to the position of the through hole (41).

5. The soft-pack battery according to claim 3, characterized in that, The arc-shaped edges of the first barley paper (31) and the second barley paper (32) are respectively adapted to the circumferential contour of the end of the soft-pack battery.

6. The pouch cell according to any one of claims 1 to 5, characterized in that, It also includes high-temperature adhesive tape (2), which is attached to both ends and sides of the battery cell (1); the barley paper (3) is arranged axially between the high-temperature adhesive tape (2) and the metal shell (4).

7. The soft-pack battery according to claim 6, characterized in that, The high-temperature adhesive tape (2) includes a first part (21), a second part (22) and a third part (23); the third part (23) is attached to the side sealing edge of the battery cell (1) along the axial direction, and the first part (21) and the second part (22) are respectively attached to the two end folded edges of the battery cell (1) and partially overlap with the third part (23).

8. The pouch cell battery according to any one of claims 1 to 5, characterized in that, The metal shell (4) is a stainless steel shell.

9. The pouch cell battery according to any one of claims 1 to 5, characterized in that, The heat shrink film (5) is cylindrical, including a tubular sidewall (51) and endwalls (52) disposed at both ends of the sidewall (51); the endwalls (52) are annular and cover at least part of the end face of the metal shell (4).

10. An electronic atomizing device, characterized in that, Includes the pouch cell battery as described in any one of claims 1 to 9.

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