WO2022198612A1 - 一种电池、用电装置及无人机 - Google Patents

一种电池、用电装置及无人机 Download PDF

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Publication number
WO2022198612A1
WO2022198612A1 PCT/CN2021/083145 CN2021083145W WO2022198612A1 WO 2022198612 A1 WO2022198612 A1 WO 2022198612A1 CN 2021083145 W CN2021083145 W CN 2021083145W WO 2022198612 A1 WO2022198612 A1 WO 2022198612A1
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WIPO (PCT)
Prior art keywords
insulating layer
battery
metal layer
layer
insulating
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Application number
PCT/CN2021/083145
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English (en)
French (fr)
Inventor
徐国庆
卞春花
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东莞新能安科技有限公司
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Priority to PCT/CN2021/083145 priority Critical patent/WO2022198612A1/zh
Publication of WO2022198612A1 publication Critical patent/WO2022198612A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of electrochemistry, and in particular, to a battery, an electrical device and an unmanned aerial vehicle.
  • Soft-pack lithium-ion batteries have the advantages of light weight, flexible shape, and high energy density. With the maturity of soft-pack battery technology, they are widely used in consumer electronics, electric vehicles, and power tools. Soft-pack lithium-ion batteries generally use metal composite films as battery packaging materials. However, the metal foil layer in the metal composite film will undergo chemical reactions in a corrosive environment (such as salt spray, acid-base solution, etc.), resulting in chemical corrosion of the metal foil layer; Metal battery compartments, aqueous solutions, etc.) generate electrons or ion conduction to form a primary battery, which will cause electrochemical corrosion of the metal foil layer. The above-mentioned chemical corrosion and electrochemical corrosion of the metal foil layer will lead to delamination of the package and then lead to the failure of the package, resulting in the infiltration of water vapor into the battery and the failure of the battery.
  • a corrosive environment such as salt spray, acid-base solution, etc.
  • the sealing edge is generally folded so that the sealing edge is not directly exposed to solve the short circuit problem of the metal foil layer.
  • the process of folding and sealing the edge is complicated and cannot effectively or for a long time isolate the flowing corrosive environment such as water vapor and salt mist, and additional processes and equipment are required to increase the manufacturing cost.
  • An embodiment of the present application provides a battery, the battery includes a cell and a packaging film wrapping the cell, and the packaging film includes a first area and a second area.
  • the second region is provided with a metal layer, and a first insulating layer and a second insulating layer respectively provided on two opposite sides of the metal layer. The two opposite sides are the first side and the second side of the metal layer.
  • the first region is provided with an insulating portion, and the insulating portion covers the end face of the metal layer.
  • the metal layer of metal material is disposed between the first insulating layer and the second insulating layer, and the edge of the metal layer is covered by at least one of the first insulating layer or the second insulating layer, or the metal layer is covered by the first insulating layer and the second insulating layer.
  • An insulating layer or an independent coating of the second insulating layer so that the metal layer is not directly exposed to the environment, which can effectively prevent the corrosion of the metal in the metal layer by water vapor, salt spray, etc., effectively improve the corrosion resistance of the packaging film, and further Improve battery safety.
  • the insulating portion includes a portion of at least one of the first insulating layer and the second insulating layer extending to an end surface of the metal layer and covering the end surface of the metal layer.
  • the insulating portion is an independent structure, and the insulating portion is adhered to the end face of the metal layer and part of the surfaces of the first insulating layer and the second insulating layer, so that all The metal layer is encapsulated in the sealing structure formed by the insulating portion, the first insulating layer and the second insulating layer.
  • the independent insulating part cooperates with the first insulating layer and the second insulating layer to seal the metal part, so that the metal layer is not directly exposed to the environment, which can effectively prevent the corrosion of the metal in the metal layer by water vapor, salt spray, etc. battery safety.
  • the area of the first side surface or the second side surface is larger than the area of the end surface.
  • the metal layer includes a first surface, the first surface is located at the periphery of the metal layer, the first surface is adjacent to the first region, and the first surface covered by at least one of the first insulating layer and the second insulating layer.
  • both the first insulating layer and the second insulating layer extend from the second region to the first region.
  • the first insulating layer extends along the first side to the first region and covers the first surface
  • the second insulating layer extends along the second side to the first region and bonded with the first insulating layer to cover the metal layer.
  • the first insulating layer extends to the first region along the first side surface and covers at least part of the first surface
  • the second insulating layer extends along the first side.
  • Two side surfaces extend to the first region and cover at least part of the first surface, and the first insulating layer and the second insulating layer are bonded to cover the metal layer.
  • the first insulating layer extends along the first side to the first region and covers the first surface
  • the second insulating layer extends along the second side to be bonded with the first insulating layer to cover the metal layer.
  • the first insulating layer extends along the first side surface to cover the first surface, and extends along the first surface to the second region to cover the first surface Parts of the two side surfaces are bonded with the second insulating layer to cover the metal layer.
  • the material of at least one of the first insulating layer and the second insulating layer includes polypropylene.
  • the material of one of the first insulating layer and the second insulating layer includes polypropylene, and the material of the other of the first insulating layer and the second insulating layer Including nylon.
  • the first insulating layer and the metal layer are bonded by glue, and the metal layer and the second insulating layer are bonded by glue or thermocompression Knot.
  • the packaging film includes a first end portion and a second end portion, and the first end portion and the second end portion are pressed together on the same side of the battery to form a packaging end.
  • the first insulating layer provided on the first end portion and the first insulating layer provided on the second end portion are bonded at the package end.
  • the embodiments of the present application also provide a method for preparing a battery, which is used for preparing the aforementioned battery, including the following steps: providing the metal layer. providing the first insulating layer and the second insulating layer; attaching the metal layer to the first insulating layer and the second insulating layer so as to make the first insulating layer or the second insulating layer
  • the insulating layer covers the exposed side surface of the metal layer to seal the metal layer; the insulating part is covered and arranged on the end surface of the metal layer.
  • the metal layer is covered by the first insulating layer and the second insulating layer, and the sealing end of the battery does not need to be edge-sealed by a folding process, which can effectively reduce manufacturing difficulty and cost.
  • An embodiment of the present application further provides an electrical device, including a battery and a load, the battery is used to provide power for the load, and the battery is the aforementioned battery.
  • An embodiment of the present application further provides an unmanned aerial vehicle, including a battery, an engine and a controller, the battery is used to provide power for the engine and the controller, and the battery is the aforementioned battery.
  • the present application also provides an unmanned aerial vehicle, comprising a battery and a working module, wherein the battery provides energy for the working module, and the battery component includes the aforementioned packaging film.
  • the metal layer of metal material is arranged between the first insulating layer and the second insulating layer, and the edge of the metal layer is surrounded by at least one of the first insulating layer or the second insulating layer.
  • a cladding, or the metal layer is independently clad by the first insulating layer or the second insulating layer, so that the metal layer is not directly exposed to the environment, which can effectively prevent the corrosion of the metal in the metal layer by water vapor, salt spray, etc., Effectively improve the corrosion resistance of the packaging film and further improve the safety of the battery.
  • the metal layer is covered by the first insulating layer and the second insulating layer, and the sealing end of the battery does not need to be edge-sealed by a folding process, which can effectively reduce manufacturing difficulty and cost.
  • FIG. 1 is a partial schematic diagram of a packaging film of a battery according to an embodiment of the present application.
  • FIG. 2 is a partial schematic view of a packaging film of a battery according to another embodiment of the present application.
  • FIG. 3 is a partial schematic diagram of a packaging film of a battery according to another embodiment of the present application.
  • FIG. 4 is a partial schematic view of a packaging film of a battery according to still another embodiment of the present application.
  • FIG. 5 is a partial schematic view of a packaging film of a battery according to still another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a battery according to an embodiment of the present application.
  • FIG. 7 is a partial schematic diagram of a packaging end of a packaging film of a battery according to an embodiment of the present application.
  • FIG. 8 is a partial schematic view of a packaging end of a packaging film of a battery according to another embodiment of the present application.
  • FIG. 9 is a schematic diagram of an electrical device according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of an unmanned aerial vehicle according to an embodiment of the present application.
  • the first area 101 is the first area 101
  • the packaging film 10 includes a first area 101 and a second area 102 .
  • the first region 101 may be one of the ends of the packaging film 10 .
  • the first region 101 is adjacent to and in contact with the second region 102 .
  • the second region 102 is provided with a metal layer 13 , a first insulating layer 11 and a second insulating layer 12 respectively provided on two opposite sides of the metal layer 13 , the two opposite sides being the first side 132 of the metal layer 13 . and the second side 133.
  • the area of the first side surface 132 or the second side surface 133 is larger than the area of the end surface 130 of the metal layer 13 . That is, when applied to the sheet-like metal layer 13, the first side 132 and the second side 133 of the metal layer 13 are the two larger sides of the metal layer 13, and the end face 130 of the metal layer 13 may be a sheet-like structure At the side ends of the metal layer 13 , the first insulating layer 11 and the second insulating layer 12 can be respectively disposed on the two larger surfaces of the metal layer 13 .
  • the first region 101 is provided with an insulating portion 103 , and the insulating portion 103 covers the end surface 130 of the metal layer 13 .
  • the insulating portion 103 includes a portion of at least one of the first insulating layer 11 and the second insulating layer 12 extending to the end surface 130 of the metal layer 13 and covering the end surface 130 of the metal layer 13 .
  • the insulating portion 103 may be a structure in which the first insulating layer 11 and the second insulating layer 12 extend from the second region 102 to the first region 101 to form a cladding metal layer 13 .
  • the insulating portion 103 may also be a separate insulating structure, that is, the insulating portion 103 may be an independent structure, the insulating portion 103 and the end face 130 of the metal layer 13 and part of the first insulating layer 11 and the surfaces of the second insulating layer 12 are adhered, so that the metal layer 13 is encapsulated in the sealing structure formed by the insulating portion 103 and the first insulating layer 11 and the second insulating layer 12 .
  • At least a portion of the first insulating layer 11 is disposed in the second region 102
  • at least a portion of the second insulating layer 12 is disposed in the second region 102
  • at least a portion of the first insulating layer 11 and the second insulating layer 12 are disposed in the second region 102 .
  • One extends from the second region 102 to the first region 101 .
  • the metal layer 13 is formed by the first insulating layer 11 and the second insulating layer 12 .
  • the two insulating layers 12 are wrapped, and the ends located around or at the edges of the metal layer 13 may be completely covered by at least one of the first insulating layer 11 and the second insulating layer 12, or the metal layer 13 may be covered by the first insulating layer 11 or the second insulating layer 12.
  • One of the two insulating layers 12 is covered independently, so as to isolate the metal layer 13 from the outside world.
  • the first insulating layer 11 and the second insulating layer 12 are used to cover the sealing metal layer 13. On the one hand, it can avoid the direct contact between the metal layer 13 and the cells or batteries covered by the packaging film 10 and cause a short circuit, and on the other hand, it can avoid external The direct contact of corrosive components such as water vapor and salt spray with the metal layer 13 causes the metal layer 13 to corrode and fail.
  • the material of at least one of the first insulating layer 11 and the second insulating layer 12 includes polypropylene. In other embodiments, the material of one of the first insulating layer 11 and the second insulating layer 12 includes polypropylene, and the material of the other of the first insulating layer 11 and the second insulating layer 12 includes nylon.
  • the first insulating layer 11 and the metal layer 13 are bonded by the glue 14, the metal layer 13 and the second insulating layer 12 are bonded by the glue 14, and the first insulating layer 11 and the second insulating layer are bonded by the glue 14.
  • the layers 12 can also be bonded by a glue 14, and the glue 14 can be an insulating glue.
  • the part of the first insulating layer 11 in direct contact with the second insulating layer 12 may also be directly bonded by thermal pressing.
  • the metal layer 13 further includes a first surface 131, and the first surface 131 is adjacent to the first region 101; when the end surface 130 of the metal layer 13 is irregular in shape, the first surface 131 may be the end surface 130 closest to the first region 101. part; when the end surface 130 of the metal layer 13 is in a regular shape (eg, a rectangle or a circle), the first surface 131 may be the whole of the end surface 130 .
  • the insulating portion 103 is a structure in which the first insulating layer 11 and the second insulating layer 12 extend to the cladding metal layer 13 formed by the second region 102 , the first surface 131 is surrounded by the first insulating layer 11 and the second insulating layer 12 . at least one covering. In other embodiments, when the insulating portion 103 is also a separate insulating structure, the first surface 131 is covered by the insulating portion 103 .
  • the first surface 131 is in contact with the first side surface 132 and the second side surface 133 at the same time.
  • the first insulating layer 11 is disposed on at least the first side surface 132
  • the second insulating layer 12 is disposed on at least the second side surface 133 .
  • the first insulating layer 11 and the second insulating layer 12 both extend from the second region 102 to the first region 101 .
  • FIG. 1 it is a schematic structural diagram of a packaging film 10 of a battery according to an embodiment of the present application.
  • the first insulating layer 11 may extend along the first side surface 132 to the first region 101 and cover the first surface 131
  • the second insulating layer 12 may extend along the second side surface 133 to the first region 101 . and bonded with the first insulating layer 11 to cover the metal layer 13 .
  • the first surface 131 and the first side surface 132 of the metal layer 13 are completely covered by the first insulating layer 11 , and the second side surface 133 is covered by the second insulating layer 12 .
  • a preparation method of a battery includes the following steps: providing a metal layer 13 . Provide the first insulating layer 11 and the second insulating layer 12; attach the metal layer 13 to the first insulating layer 11 and the second insulating layer 12, so that the first insulating layer 11 or the second insulating layer 12 covers the metal layer 13 and exposes The side surface of the metal layer 13 is sealed to seal the metal layer 13 ;
  • a groove 139 for accommodating the metal layer 13 may be opened on the first insulating layer 11 or the second insulating layer 12 , and the metal layer 13 is disposed behind the groove 139 .
  • the second insulating layer 12 or the other covering the metal layer 13 of the first insulating layer 11 is exposed to the part of the first insulating layer 11 and the part of the first insulating layer 11 located in the first region 101, so as to realize the protection of the metal layer 13. Completely covered.
  • the metal layer 13 is directly pressed into the first insulating layer 11 or the second insulating layer 12 by pressing.
  • the second insulating layer 12 covers the portion of the metal layer 13 exposed to the first insulating layer 11 and the portion of the first insulating layer 11 located in the first region 101 , so as to completely cover the metal layer 13 .
  • the first insulating layer 11 covers the portion of the metal layer 13 exposed to the second insulating layer 12 and the portion of the second insulating layer 12 located in the first region 101 , so as to completely cover the metal layer 13 .
  • FIG. 2 it is a schematic structural diagram of a packaging film 10 of a battery according to another embodiment of the present application.
  • the first insulating layer 11 extends to the first region 101 along the first side surface 132 and covers a portion of the first surface 131
  • the second insulating layer 12 extends to the first region 101 along the second side surface 133 and covers a portion of the first surface 131 . Covering at least a part of the first surface 131 , the first insulating layer 11 and the second insulating layer 12 are bonded to cover the metal layer 13 .
  • the first surface 131 of the metal layer 13 is completely wrapped by the first insulating layer 11 and the second insulating layer 12 respectively, the first side surface 132 of the metal layer 13 is wrapped by the first insulating layer 11 , and the metal layer 13 The second side surface 133 is covered by the second insulating layer 12.
  • a groove for accommodating the metal layer 13 can be opened on the first insulating layer 11 and the second insulating layer 12, and the first insulating layer 11 and the second insulating layer 12 can be formed.
  • the two insulating layers 12 are clasped together to cover the portion of the metal layer 13 exposed to the first insulating layer 11 so as to completely cover the metal layer 13 ; or, the first insulating layer 11 , the metal layer 13 and the second insulating layer 12 are stacked in sequence
  • the metal layer 13 is directly pressed into the first insulating layer 11 and the second insulating layer 12 by pressing, and the first insulating layer 11 and the second insulating layer 12 are bonded to realize the complete covering of the metal layer 13 .
  • one of the first insulating layer 11 and the second insulating layer 12 extends from the second region 102 to the first region 101 .
  • FIG. 3 it is a schematic structural diagram of a packaging film 10 of a battery according to another embodiment of the present application.
  • the first insulating layer 11 may extend along the first side 132 to the first region 101 and cover the first surface 131
  • the second insulating layer 12 may extend along the second side 133 to be close to the first region 101
  • the edge of the second region 102 is bonded with the first insulating layer 11 to cover the metal layer 13 .
  • the first surface 131 and the first side surface 132 of the metal layer 13 are completely covered by the first insulating layer 11
  • the second side surface 133 is covered by the second insulating layer 12 .
  • a groove for accommodating the metal layer 13 and the second insulating layer 12 is formed on the layer 11 .
  • the second insulating layer 12 is disposed on the first insulating layer 11 .
  • the second insulating layer 12 covers the part of the metal layer 13 exposed to the first insulating layer 11 in the groove of the first insulating layer 11 so as to completely cover the metal layer 13 .
  • FIG. 4 it is a schematic structural diagram of a packaging film 10 of a battery according to another embodiment of the present application.
  • the first insulating layer 11 extends along the first side surface 132 to cover the first surface 131 , and extends along the first surface 131 to the second region 102 and is bonded with the second insulating layer 12 to cover the metal layer 13 .
  • the metal layer 13 and the first insulating layer 11 can be bonded first, and the first insulating layer 11 can cover the first side surface 132 and the first surface 131 of the metal layer 13, and the first insulating layer 11 extends from the first surface 131 to the second side 133 opposite to the first side 132, and covers the area adjacent to the first surface 131 on the second side 133, and the second insulating layer 12 is arranged on the second side 133, The first insulating layer 11 and the second insulating layer 12 are bonded to completely wrap the metal layer 13 .
  • the battery 1 includes a battery cell 19 and a packaging film 10 that wraps the battery cell 19 .
  • the packaging film 10 includes a first end portion 108 and a second end portion 109 , and the first end portion 108 and the second end portion 109 may be packaging films.
  • the two opposite ends, the first end 108 and the second end 109 are pressed together on the same side of the battery 1 to form a package end 107 .
  • the first insulating layer 11 disposed on the first end portion 108 and the first insulating layer 11 disposed on the second end portion 109 are completely combined at the package end 107 to protect the battery core 19; after the encapsulation is completed, the metal layer 13 is located in the package The part of the end 107 is wrapped by the first insulating layer 11 and the second insulating layer 12 to prevent the metal layer 13 from being corroded and further improve the sealing performance of the packaging film 10 .
  • the first end portion 108 and the second end portion 109 may be partially combined to realize the protection of the battery cell 19 .
  • first end portion 108 and the second end portion 109 can also be rolled to achieve sealing of the edges of the packaging film 10 .
  • an embodiment of the present application further provides an electrical device 100, including a battery 1 and a load 2, the battery 1 provides power for the load 2, and the electrical device 100 can also be a personal computer, a smart home appliance, or an industrial controller , unicycles, or electric vehicles with more than two wheels, gasoline-electric hybrid vehicles, etc.
  • the embodiment of the present application further provides an unmanned aerial vehicle 200 , which includes a battery 1 , an engine 3 and a controller 4 , and the battery 1 is used to provide power for the engine 3 and the controller 4 .
  • the UAV 200 may further include necessary or common functional modules in UAVs, such as a photographing module and an information transmission module.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

本申请实施例提供一种电池、用电装置及无人机。电池包括电芯及包裹电芯的包装膜，所述包装膜包括第一区域和第二区域；第二区域设置有金属层、及分别设置于金属层两个相对侧面的第一绝缘层和第二绝缘层，相对的两个侧面为金属层的第一侧面和第二侧面；第一区域设置有绝缘部，绝缘部包覆金属层的端面。本申请的电池中，金属材质的金属层设置于第一绝缘层及第二绝缘层之间，使得金属层未直接暴露于环境中，可有效防止水汽、盐雾等对金属层中金属的腐蚀，有效提升包装膜的耐腐蚀性，进一步提升电池的安全性。且，金属层由第一绝缘层及第二绝缘层包覆，在电池的封装端处无需通过折叠工艺进行封边，可有效降低制作难度并降低成本。

Description

一种电池、用电装置及无人机 技术领域
本申请涉及电化学技术领域，尤其涉及一种电池、用电装置及无人机。
背景技术
软包锂离子电池具有重量轻、形状灵活、能量密度高等优点，随着软包电池工艺成熟化，其在消费电子、电动汽车和电动工具等领域被广泛的应用。软包锂离子电池一般采用金属复合膜作为电池的包装材料。但，该金属复合膜中的金属箔层在腐蚀性环境中(如盐雾、酸碱溶液等)会发生化学反应，造成金属箔层化学腐蚀；另外，金属箔层如与外界环境产生(如金属电池仓、水溶液等)产生电子或者离子导通形成原电池，则会造成金属箔层电化学腐蚀。上述金属箔层化学腐蚀和电化学腐蚀都会致使封装分层进而引发封装失效，导致水汽渗入电池引发电池失效。
现有的工艺一般采用折叠封印边缘，使封装边缘不直接外露来解决金属箔层短路的问题。折叠封印边缘工艺复杂且无法有效或长期隔绝水汽、盐雾等流动腐蚀环境，且需要增加额外的工艺及设备使得制造成本增加。
发明内容
为了解决现有技术中包装膜因腐蚀导致的失效问题。
本申请实施例提供一种电池，所述电池包括电芯及包裹所述电 芯的包装膜，所述包装膜包括第一区域和第二区域。所述第二区域设置有金属层、及分别设置于所述金属层两个相对侧面的第一绝缘层和第二绝缘层。所述相对的两个侧面为所述金属层的第一侧面和第二侧面。所述第一区域设置有绝缘部，所述绝缘部包覆所述金属层的端面。进一步的，金属材质的金属层设置于第一绝缘层及第二绝缘层之间，且金属层的边缘被第一绝缘层或第二绝缘层中的至少一个包覆，或，金属层被第一绝缘层或第二绝缘层的一个独立包覆，使得金属层未直接暴露于环境中，可有效防止水汽、盐雾等对金属层中金属的腐蚀，有效提升包装膜的耐腐蚀性，进一步提升电池的安全性。
在一种可能的实施方式中，所述绝缘部包括所述第一绝缘层及所述第二绝缘层中的至少一个延伸到所述金属层的端面并包覆所述金属层端面的部分。
在一种可能的实施方式中，所述绝缘部为独立结构，所述绝缘部与所述金属层的端面及部分所述第一绝缘层及所述第二绝缘层的表面粘连，以使所述金属层被包覆在所述绝缘部与所述第一绝缘层及所述第二绝缘层所形成的密封结构内。进一步的，独立的绝缘部与第一绝缘层及第二绝缘层配合以密封金属部，使得金属层未直接暴露于环境中，可有效防止水汽、盐雾等对金属层中金属的腐蚀，提升电池的安全性。
在一种可能的实施方式中，所述第一侧面或第二侧面的面积，大于所述端面的面积。
在一种可能的实施方式中，所述金属层包括第一表面，所述第一表面位于所述金属层的周缘，所述第一表面与所述第一区域相邻， 所述第一表面被所述第一绝缘层及所述第二绝缘层中的至少一个包覆。
在一种可能的实施方式中，所述第一绝缘层及所述第二绝缘层均由所述第二区域延伸至所述第一区域。
在一种可能的实施方式中，所述第一绝缘层沿所述第一侧面延伸至所述第一区域并包覆所述第一表面，所述第二绝缘层沿所述第二侧面延伸至所述第一区域并与所述第一绝缘层粘结以包覆所述金属层。
在一种可能的实施方式中，所述第一绝缘层沿所述第一侧面延伸至所述第一区域并包覆所述第一表面的至少部分，所述第二绝缘层沿所述第二侧面延伸至所述第一区域并包覆所述第一表面的至少部分，所述第一绝缘层与所述第二绝缘层粘结以包覆所述金属层。
在一种可能的实施方式中，所述第一绝缘层沿所述第一侧面延伸至所述第一区域并包覆所述第一表面，所述第二绝缘层沿所述第二侧面延伸至与所述第一绝缘层粘结以包覆所述金属层。
在一种可能的实施方式中，所述第一绝缘层沿所述第一侧面延伸至包覆所述第一表面，并沿所述第一表面延伸至所述第二区域以覆盖所述第二侧面的部分并与所述第二绝缘层粘结以包覆所述金属层。
在一种可能的实施方式中，所述第一绝缘层及所述第二绝缘层的至少一个的材质包括聚丙烯。
在一种可能的实施方式中，所述第一绝缘层及所述第二绝缘层中的一个的材质包括聚丙烯，所述第一绝缘层及所述第二绝缘层中的另一个的材质包括尼龙。
在一种可能的实施方式中，所述第一绝缘层与所述金属层之间通过胶体粘结，所述金属层与所述第二绝缘层之间通过胶体粘结或热压压合粘结。
在一种可能的实施方式中，所述包装膜包括第一端部及第二端部，所述第一端部及所述第二端部在所述电池同一侧压合形成一封装端。
在一种可能的实施方式中，设置于所述第一端部的第一绝缘层及设置于所述第二端部的第一绝缘层在所述封装端处粘结。
本申请实施例还提供一种电池的制备方法，用于制备前述的电池，包括如下步骤：提供所述金属层。提供所述第一绝缘层及所述第二绝缘层；将所述金属层与所述第一绝缘层及所述第二绝缘层贴合，以使所述第一绝缘层或所述第二绝缘层覆盖所述金属层裸露的侧表面以密封所述金属层；将绝缘部包覆设置于所述金属层的端面。进一步的，金属层由第一绝缘层及第二绝缘层包覆，在电池的封装端处无需通过折叠工艺进行封边，可有效降低制作难度并降低成本。
本申请实施例还提供一种用电装置，包括电池及负载，所述电池用于为所述负载提供电力，所述电池为前述的电池。
本申请实施例还提供一种无人机，包括电池及引擎和控制器，所述电池用于为所述引擎和控制器提供电力，所述电池为前述的电池。
本申请还提供一种无人机，包括电池及工作模块，所述电池为所述工作模块提供能源，所述电池件包括前述的包装膜。
相比于现有技术，本申请的电池中，金属材质的金属层设置于第一绝缘层及第二绝缘层之间，且金属层的边缘被第一绝缘层或第 二绝缘层中的至少一个包覆，或，金属层被第一绝缘层或第二绝缘层的一个独立包覆，使得金属层未直接暴露于环境中，可有效防止水汽、盐雾等对金属层中金属的腐蚀，有效提升包装膜的耐腐蚀性，进一步提升电池的安全性。且，金属层由第一绝缘层及第二绝缘层包覆，在电池的封装端处无需通过折叠工艺进行封边，可有效降低制作难度并降低成本。
附图说明
图1为本申请一实施例的电池的包装膜的局部示意图。
图2为本申请另一实施例的电池的包装膜的局部示意图。
图3为本申请又一实施例的电池的包装膜的局部示意图。
图4为本申请再一实施例的电池的包装膜的局部示意图。
图5为本申请还一实施例的电池的包装膜的局部示意图。
图6为本申请一实施例的电池的结构示意图。
图7为本申请一实施例的电池的包装膜封装端的局部示意图。
图8为本申请另一实施例的电池的包装膜封装端的局部示意图。
图9为本申请一实施例的用电装置的示意图。
图10为本申请一实施例的无人机的示意图。
主要元件符号说明
包装膜                           10
第一区域                         101
第二区域                         102
绝缘部                           103
第一绝缘层                       11
第二绝缘层                       12
金属层                           13
端面                             130
第一表面                         131
第一侧面                         132
第二侧面                         133
胶体                             14
封装端                           107
第一端部                         108
第二端部                         109
电池                             1
电芯                             19
用电装置                         100
负载                             2
无人机                           200
引擎                             3
控制器                           4
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
以下描述将参考附图以更全面地描述本申请内容。附图中所示为本申请的示例性实施例。然而，本申请可以以许多不同的形式来实施，并且不应该被解释为限于在此阐述的示例性实施例。提供这 些示例性实施例是为了使本申请透彻和完整，并且将本申请的范围充分地传达给本领域技术人员。类似的附图标记表示相同或类似的组件。
本文使用的术语仅用于描述特定示例性实施例的目的，而不意图限制本申请。如本文所使用的，除非上下文另外清楚地指出，否则单数形式“一”，“一个”和“该”旨在也包括复数形式。此外，当在本文中使用时，“包括”和/或“包含”和/或“具有”，整数，步骤，操作，组件和/或组件，但不排除存在或添加一个或多个其它特征，区域，整数，步骤，操作，组件，组件和/或其群组。
除非另外定义，否则本文使用的所有术语(包括技术和科学术语)具有与本申请所属领域的普通技术人员通常理解的相同的含义。此外，除非文中明确定义，诸如在通用字典中定义的那些术语应该被解释为具有与其在相关技术和本申请内容中的含义一致的含义，并且将不被解释为理想化或过于正式的含义。
以下内容将结合附图对示例性实施例进行描述。须注意的是，参考附图中所描绘的组件不一定按比例显示；而相同或类似的组件将被赋予相同或相似的附图标记表示或类似的技术用语。
下面参照附图，对本申请的具体实施方式作进一步的详细描述。
如图1至图5所示，为本申请一实施例提供的一种电池的包装膜10的示意图，包装膜10包括第一区域101以及第二区域102。在一种实施方式中，第一区域101可以为包装膜10的多个端部的其中一个端部。
在一种实施方式中，第一区域101与第二区域102相邻并接触。
第二区域102设置有金属层13、及分别设置于金属层13两个 相对侧面的第一绝缘层11以及第二绝缘层12，所述相对的两个侧面为金属层13的第一侧面132和第二侧面133。
在一种实施方式中，所述第一侧面132或第二侧面133的面积大于金属层13的端面130的面积。即，在应用于例如片状的金属层13时，金属层13的第一侧面132及第二侧面133为金属层13的较大的两个面，金属层13的端面130可以为片状结构的侧端，第一绝缘层11及第二绝缘层12可分别设于金属层13的较大的两个面上。
如图1至图4所示，在一种实施方式中，第一区域101设置有绝缘部103，绝缘部103包覆金属层13的端面130。绝缘部103包括第一绝缘层11及第二绝缘层12中的至少一个延伸到金属层13的端面130并包覆金属层13的端面130的部分。绝缘部103可以为第一绝缘层11及第二绝缘层12由第二区域102延伸至第一区域101形成的包覆金属层13的结构。
如图5所示，在其他实施例中，绝缘部103还可以为一单独的绝缘结构，即，绝缘部103可以为独立结构，绝缘部103与金属层13的端面130及部分第一绝缘层11及第二绝缘层12的表面粘连，以使金属层13被包覆在绝缘部103与第一绝缘层11及第二绝缘层12所形成的密封结构内。
在一种实施方式中，第一绝缘层11的至少一部分设置于第二区域102，第二绝缘层12的至少一部分设置于第二区域102，第一绝缘层11及第二绝缘层12的至少一个由第二区域102延伸至第一区域101。
在一种实施方式中，绝缘部103为第一绝缘层11及第二绝缘层12延伸至第二区域102形成的包覆金属层13的结构时，金属层13 由第一绝缘层11及第二绝缘层12包裹，位于金属层13的四周或边缘的端部可被第一绝缘层11及第二绝缘层12的至少一个完全包覆，或，金属层13被第一绝缘层11或第二绝缘层12中的一个独立包覆，从而使金属层13与外界隔离。第一绝缘层11及第二绝缘层12用于包覆密封金属层13，一方面可避免金属层13与包装膜10所包覆的电芯或电池直接接触造成短路，另一方面可避免外部水汽、盐雾等腐蚀性成分与金属层13直接接触造成金属层13腐蚀失效。
在一种实施方式中，第一绝缘层11及第二绝缘层12的至少一个的材质包括聚丙烯。在其他实施例中，第一绝缘层11及第二绝缘层12中的一个的材质包括聚丙烯，第一绝缘层11及第二绝缘层12中的另一个的材质包括尼龙。
在一种实施方式中，第一绝缘层11与金属层13之间通过胶体14粘结，金属层13与第二绝缘层12之间通过胶体14粘结，第一绝缘层11与第二绝缘层12之间亦可通过胶体14粘结，胶体14可以为绝缘胶。在其他实施例中，第一绝缘层11与第二绝缘层12直接接触的部分还可以通过热压实现直接粘结。
金属层13还包括第一表面131，第一表面131与第一区域101相邻；当金属层13的端面130为不规则形状时，第一表面131可以为端面130最靠近第一区域101的部分；当金属层13的端面130为规则形状(例如矩形或圆形)时，第一表面131可以为端面130的全部。当绝缘部103为第一绝缘层11及第二绝缘层12延伸至第二区域102形成的包覆金属层13的结构时，第一表面131被第一绝缘层11及第二绝缘层12中的至少一个包覆。在其他实施例中，绝缘部103还为一单独的绝缘结构时，第一表面131被绝缘部103包 覆。
第一表面131同时与第一侧面132及第二侧面133接触。第一绝缘层11至少设置于第一侧面132，第二绝缘层12至少设置于第二侧面133。
在一种实施方式中，第一绝缘层11及第二绝缘层12均由第二区域102延伸至第一区域101。
如图1所示，为本申请一实施例的电池的包装膜10的结构示意图。
在一种实施方式中，第一绝缘层11可沿第一侧面132延伸至第一区域101处并包覆第一表面131，第二绝缘层12可沿第二侧面133延伸至第一区域101处并与第一绝缘层11粘结以包覆金属层13。
在本实施例中，金属层13的第一表面131及第一侧面132完全被第一绝缘层11包裹，第二侧面133被第二绝缘层12包覆。
一种电池的制备方法，包括如下步骤：提供金属层13。提供第一绝缘层11及第二绝缘层12；将金属层13与第一绝缘层11及第二绝缘层12贴合，以使第一绝缘层11或第二绝缘层12覆盖金属层13裸露的侧表面以密封金属层13；将绝缘部103包覆设置于金属层13的端面130。
在一种实施方式中，可在第一绝缘层11或第二绝缘层12上开设容置金属层13的凹槽139，将金属层13设置于凹槽139后。使第二绝缘层12或第一绝缘层11中的另一个覆盖金属层13暴露于第一绝缘层11的部分及第一绝缘层11位于第一区域101的部分，以实现对金属层13的完全包覆。
或者，在一种实施方式中，通过加压将金属层13直接压入第一 绝缘层11或第二绝缘层12中。并使第二绝缘层12覆盖金属层13暴露于第一绝缘层11的部分及第一绝缘层11位于第一区域101的部分，以实现对金属层13的完全包覆。或，使第一绝缘层11覆盖金属层13暴露于第二绝缘层12的部分及第二绝缘层12位于第一区域101的部分，以实现对金属层13的完全包覆。
如图2所示，为本申请另一实施例的电池的包装膜10的结构示意图。
在一种实施方式中，第一绝缘层11沿第一侧面132延伸至第一区域101并包覆第一表面131的部分，第二绝缘层12沿第二侧面133延伸至第一区域101并包覆第一表面131的至少部分，第一绝缘层11与第二绝缘层12粘结以包覆金属层13。
在本实施例中，金属层13的第一表面131分别被第一绝缘层11及第二绝缘层12完全包裹，金属层13的第一侧面132被第一绝缘层11包覆，金属层13的第二侧面133被第二绝缘层12包覆，制作过程中，可在第一绝缘层11及第二绝缘层12上开设容置金属层13的凹槽，将第一绝缘层11及第二绝缘层12扣合覆盖金属层13暴露于第一绝缘层11的部分以实现对金属层13的完全包覆；或者，将第一绝缘层11、金属层13以及第二绝缘层12依次堆叠设置，通过加压使金属层13直接压入第一绝缘层11及第二绝缘层12中并使第一绝缘层11与第二绝缘层12粘结以实现对金属层13的完全包覆。
在一种实施方式中，第一绝缘层11及第二绝缘层12中的一个由第二区域102延伸至第一区域101。
如图3所示，为本申请又一实施例的电池的包装膜10的结构示 意图。
在一种实施方式中，第一绝缘层11可沿第一侧面132延伸至第一区域101并包覆第一表面131，第二绝缘层12可沿第二侧面133延伸至靠近第一区域101的第二区域102的边缘并与第一绝缘层11粘结以包覆金属层13。
在本实施例中，金属层13的第一表面131及第一侧面132完全被第一绝缘层11包裹，第二侧面133被第二绝缘层12包覆，制作过程中，可在第一绝缘层11上开设容置金属层13及第二绝缘层12的凹槽，将金属层13设置于第一绝缘层11的凹槽后，一并将第二绝缘层12设于第一绝缘层11的凹槽中并使第二绝缘层12覆盖金属层13暴露于第一绝缘层11的部分以实现对金属层13的完全包覆。
如图4所示，为本申请又一实施例的电池的包装膜10的结构示意图。第一绝缘层11沿第一侧面132延伸至包覆第一表面131，并沿第一表面131延伸至第二区域102并与第二绝缘层12粘结以包覆金属层13。
在本实施例中，可先将金属层13与第一绝缘层11粘结，并使第一绝缘层11包覆金属层13的第一侧面132及第一表面131，并使第一绝缘层11由第一表面131延伸至与第一侧面132相对设置的第二侧面133，并覆盖第二侧面133上与第一表面131相邻的区域，在第二侧面133设置第二绝缘层12，使第一绝缘层11与第二绝缘层12粘结以完全包裹金属层13。
如图6所示，为本申请实施例还提供的电池1，电池1包括电芯19及包裹电芯19的包装膜10。
如图7示，为电池1的包装膜10的边缘的局部放大示意图，包 装膜10包括第一端部108及第二端部109，第一端部108及第二端部109可为包装膜10相对的两个端部，第一端部108及第二端部109在电池1同一侧压合形成一封装端107。设置于第一端部108的第一绝缘层11及设置于第二端部109的第一绝缘层11在封装端107处完全结合，以保护电芯19；完成包覆后金属层13位于封装端107的部分由第一绝缘层11及第二绝缘层12包裹，以防止金属层13被腐蚀，进一步提升包装膜10的密封性。
在其他实施例中，如图8所示，第一端部108与第二端部109的部分结合即可实现对电芯19的保护。
可以理解的，第一端部108及第二端部109还可采取卷绕的方式实现包装膜10边缘的密封。
如图9所示，本申请实施例还提供一种用电装置100，包括电池1及负载2，电池1为负载2提供电力，用电装置100也可为个人计算机、智能家电、工业控制器、独轮车、或两轮以上的电动车、油电混动交通工具等。
如图10所示，本申请实施例还提供一种无人机200，包括电池1及引擎3和控制器4，电池1用于为引擎3和控制器4提供电力。无人机200还可包括拍摄模块、信息传输模块等无人机中必要或常见的功能模块。
上文中，参照附图描述了本申请的具体实施方式。但是，本领域中的普通技术人员能够理解，在不偏离本申请的精神和范围的情况下，还可以对本申请的具体实施方式作各种变更和替换。这些变更和替换都落在本申请所限定的范围内。

Claims (18)

  1. 一种电池，所述电池包括电芯及包裹所述电芯的包装膜，其特征在于，
    所述包装膜包括第一区域和第二区域；
    所述第二区域设置有金属层、及分别设置于所述金属层两个相对侧面的第一绝缘层和第二绝缘层，其中，所述相对的两个侧面为所述金属层的第一侧面和第二侧面；
    所述第一区域设置有绝缘部，所述绝缘部包覆所述金属层的端面。
  2. 如权利要求1所述的电池，其特征在于，
    所述绝缘部包括所述第一绝缘层及所述第二绝缘层中的至少一个延伸到所述金属层的端面并包覆所述金属层端面的部分。
  3. 如权利要求1所述的电池，其特征在于，
    所述绝缘部为独立结构，所述绝缘部与所述金属层的端面及部分所述第一绝缘层及所述第二绝缘层的表面粘连，以使所述金属层被包覆在所述绝缘部与所述第一绝缘层及所述第二绝缘层所形成的密封结构内。
  4. 如权利要求1或2或3所述的电池，其特征在于，
    所述第一侧面或第二侧面的面积，大于所述端面的面积。
  5. 如权利要求1所述的电池，其特征在于，所述金属层包括第一表面，所述第一表面位于所述金属层的周缘并与所述第一侧面及第二侧面交界，所述第一表面与所述第一区域相邻，所述第一表面被所述第一绝缘层及所述第二绝缘层中的至少一个包覆。
  6. 如权利要求5所述的电池，其特征在于，所述第一绝缘层及 所述第二绝缘层均由所述第二区域延伸至所述第一区域。
  7. 如权利要求6所述的电池，其特征在于，所述第一绝缘层沿所述第一侧面延伸至所述第一区域并包覆所述第一表面，所述第二绝缘层沿所述第二侧面延伸至所述第一区域并与所述第一绝缘层粘结以包覆所述金属层。
  8. 如权利要求6所述的电池，其特征在于，所述第一绝缘层沿所述第一侧面延伸至所述第一区域并包覆所述第一表面的至少部分，所述第二绝缘层沿所述第二侧面延伸至所述第一区域并包覆所述第一表面的至少部分，所述第一绝缘层与所述第二绝缘层粘结以包覆所述金属层。
  9. 如权利要求6所述的电池，其特征在于，所述第一绝缘层沿所述第一侧面延伸至所述第一区域并包覆所述第一表面，所述第二绝缘层沿所述第二侧面延伸至与所述第一绝缘层粘结以包覆所述金属层。
  10. 如权利要求5所述的电池，其特征在于，所述第一绝缘层沿所述第一侧面延伸至包覆所述第一表面，并沿所述第一表面延伸至所述第二区域以覆盖所述第二侧面的部分并与所述第二绝缘层粘结以包覆所述金属层。
  11. 如权利要求1所述的电池，其特征在于，所述第一绝缘层及所述第二绝缘层的至少一个的材质包括聚丙烯。
  12. 如权利要求11所述的电池，其特征在于，所述第一绝缘层及所述第二绝缘层中的一个的材质包括聚丙烯，所述第一绝缘层及所述第二绝缘层中的另一个的材质包括尼龙。
  13. 如权利要求1所述的电池，其特征在于，所述第一绝缘层 与所述金属层之间通过胶体粘结，所述金属层与所述第二绝缘层之间通过胶体粘结或热压压合粘结。
  14. 如权利要求1所述的电池，其特征在于，所述包装膜还包括第一端部及第二端部，所述第一端部及所述第二端部在所述电池同一侧压合形成一封装端。
  15. 如权利要求14所述的电池，其特征在于，设置于所述第一端部的第一绝缘层及设置于所述第二端部的第一绝缘层在所述封装端处粘结。
  16. 一种电池的制备方法，其特征在于，用于制备如权利要求1至2及4至15任意一项所述的电池，包括如下步骤：
    提供所述金属层；
    提供所述第一绝缘层及所述第二绝缘层；
    将所述金属层与所述第一绝缘层及所述第二绝缘层贴合，以使所述第一绝缘层或所述第二绝缘层覆盖所述金属层裸露的侧表面以密封所述金属层；
    将所述绝缘部包覆设置于所述金属层的端面。
  17. 一种用电装置，其特征在于，包括电池及负载，所述电池用于为所述负载提供电力，所述电池为权利要求1至2及4至15任意一项所述的电池。
  18. 一种无人机，其特征在于，包括电池及引擎和控制器，所述电池用于为所述引擎和控制器提供电力，所述电池为权利要求1至2及4至15任意一项所述的电池。
PCT/CN2021/083145 2021-03-26 2021-03-26 一种电池、用电装置及无人机 WO2022198612A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103579538A (zh) * 2013-11-14 2014-02-12 东莞新能源科技有限公司 包装封印结构及其制备方法及软包装电池
CN108428814A (zh) * 2017-02-15 2018-08-21 宁德新能源科技有限公司 包装膜及软包电池
CN111312937A (zh) * 2020-02-28 2020-06-19 戴姆勒股份公司 铝塑膜及其制造方法以及使用该铝塑膜的电池
CN211088324U (zh) * 2020-01-13 2020-07-24 恒大新能源技术(深圳)有限公司 铝塑膜及软包电池
CN211764018U (zh) * 2020-01-13 2020-10-27 恒大新能源技术(深圳)有限公司 铝塑膜及软包电池

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103579538A (zh) * 2013-11-14 2014-02-12 东莞新能源科技有限公司 包装封印结构及其制备方法及软包装电池
CN108428814A (zh) * 2017-02-15 2018-08-21 宁德新能源科技有限公司 包装膜及软包电池
CN211088324U (zh) * 2020-01-13 2020-07-24 恒大新能源技术(深圳)有限公司 铝塑膜及软包电池
CN211764018U (zh) * 2020-01-13 2020-10-27 恒大新能源技术(深圳)有限公司 铝塑膜及软包电池
CN111312937A (zh) * 2020-02-28 2020-06-19 戴姆勒股份公司 铝塑膜及其制造方法以及使用该铝塑膜的电池

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