WO2023103460A1 - 封装壳、电池以及终端装置 - Google Patents

封装壳、电池以及终端装置 Download PDF

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Publication number
WO2023103460A1
WO2023103460A1 PCT/CN2022/114627 CN2022114627W WO2023103460A1 WO 2023103460 A1 WO2023103460 A1 WO 2023103460A1 CN 2022114627 W CN2022114627 W CN 2022114627W WO 2023103460 A1 WO2023103460 A1 WO 2023103460A1
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WO
WIPO (PCT)
Prior art keywords
side plate
sub
shape
packaging case
case according
Prior art date
Application number
PCT/CN2022/114627
Other languages
English (en)
French (fr)
Inventor
李洪洋
朱华
卢轮
陈宇飞
朱建伟
Original Assignee
荣耀终端有限公司
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Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Publication of WO2023103460A1 publication Critical patent/WO2023103460A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/147Lids or covers
    • H01M50/166Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/183Sealing members
    • H01M50/186Sealing members characterised by the disposition of the sealing members
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present application relates to the technical field of battery packaging, and in particular to a packaging case, a battery and a terminal device.
  • a battery includes a battery cell and a casing for packaging the battery cell.
  • a packaging case 100' (see FIG. 1) in the related art includes a first housing 10' and a second housing 20', and the first housing 10' and the second housing 20' adopt flange edges (as shown in FIG. 1 If the connection method of the area A) in the package is packaged, the packaged battery takes up a large space and increases the installation volume of the battery; in addition, the area around the flange may also have the possibility of false welding, resulting in the first shell 10' and The second casing 20' is not completely sealed or is easily separated from each other, which affects the safe use of the battery.
  • the present application provides an encapsulation case, and the encapsulation case includes a first casing and a second casing.
  • the first shell includes a bottom plate and a first side plate, the first side plate is surrounded by the periphery of the bottom plate;
  • the second shell includes a top plate and a second side plate, the second side plate is surrounded by the periphery of the top plate and extends toward the first shell ;
  • the inner wall of the second side plate is in contact with the outer wall of the first side plate.
  • the packaging structure of the first housing and the second housing avoids the generation of flange edges, and when the packaging housing is applied to the terminal device, the space occupied by the packaging housing in the terminal device is reduced; on the other hand, The inner wall of the second side plate is in contact with the outer wall of the first side plate, which increases the connection area between the first casing and the second casing, improves the sealing performance of the packaging shell, and fundamentally avoids the possibility of false welding.
  • a recessed portion is provided on the first side plate, a protruding portion is provided on the second side plate, and the protruding portion is accommodated in the recessed portion.
  • the recessed part has the function of limiting the protruding part, preventing the movement of the protruding part, and increasing the connection reliability of the second shell compared with the first shell ;
  • the recessed portion is arranged in an annular shape along the outer wall of the first side plate, and the protruding portion is arranged in an annular shape along the inner wall of the second side plate.
  • the ring-shaped concave part has the function of limiting the protruding part, preventing the movement of the protruding part, and increasing the connection reliability between the second shell and the first shell; on the other hand, further increasing the first side plate
  • the connecting area with the second side plate improves the sealing performance between the first casing and the second casing.
  • the recessed part includes a plurality of continuous ring-shaped second sub-recesses, and the plurality of second sub-recesses are arranged at intervals along the extending direction of the second side plate;
  • the protruding part includes a plurality of continuous ring-shaped The second sub-protrusions, a plurality of second sub-protrusions are arranged at intervals along the extending direction of the second side plate.
  • the plurality of continuous ring-shaped second sub-recesses can further increase the connection reliability between the second shell and the first shell.
  • the recessed part includes a plurality of first sub-recessed parts, and the plurality of first sub-recessed parts are spaced from each other and arranged in a ring shape;
  • the protruding part includes a plurality of first sub-protruding parts, and the plurality of The sub-protrusions are spaced apart from each other and arranged in a ring shape.
  • the plurality of first sub-depressions have the function of limiting the plurality of first sub-protrusions, preventing the movement of the first sub-protrusions, and increasing the connection reliability between the second housing and the first housing;
  • the connection area between the first side plate and the second side plate is further increased, thereby improving the sealing performance of the first shell and the second shell.
  • a plurality of first sub-recesses are spaced from each other and arranged in a ring shape to form second sub-recesses, the number of second sub-recesses is multiple, and the plurality of second sub-recesses
  • the extension direction of the side plate is arranged at intervals; a plurality of first sub-protrusions are spaced from each other and arranged in a ring to form a second sub-protrusion, the number of the second sub-protrusions is multiple, and the plurality of second sub-protrusions
  • the parts are arranged at intervals along the extending direction of the second side plate.
  • connection reliability between the second housing and the first housing can be further increased.
  • the shape of the cross section of the recess along the direction perpendicular to the bottom plate includes at least one of arc, square, rectangle, triangle and trapezoid; the shape of the cross section of the protrusion along the direction perpendicular to the bottom plate Including at least one of arc, square, rectangle, triangle and trapezoid.
  • the required shape of the concave part and the protruding part can be stamped according to the requirement.
  • the shape of the cross-section of the concave part along the direction perpendicular to the bottom plate is arc-shaped, and the shape of the cross-section of the protruding part along the direction perpendicular to the bottom plate is arc-shaped.
  • the arc-shaped concave part and convex part make the surface transition smoothly, which can avoid sharp corners and improve user experience; furthermore, it can also avoid the inner wall of the first side plate being deformed synchronously and sharp corners, which may cause puncture Possibility of batteries.
  • the shape of the cross section of the recessed part along the direction perpendicular to the bottom plate is rectangular; the shape of the cross section of the protruding part along the direction perpendicular to the bottom plate is rectangular.
  • the shape of the cross section of the recessed part along the direction perpendicular to the bottom plate is triangular, and the shape of the cross section of the protruding part along the direction perpendicular to the bottom plate is triangular.
  • the shape of the section of the recess along the direction perpendicular to the bottom plate is trapezoidal, the short side of the trapezoid is located on the side away from the second side plate, and the long side of the trapezoid is located on the side facing the second side plate ;
  • the shape of the section of the protruding portion along the direction perpendicular to the bottom plate is trapezoidal.
  • the short side of the trapezoid is located on the side away from the second side plate, and the long side of the trapezoid is located on the side facing the second side plate, which is easier to process and form.
  • the shape of the section of the recess along the direction perpendicular to the bottom plate is trapezoidal, the short side of the trapezoid is located on the side facing the second side plate, and the long side of the trapezoid is located on the side away from the second side plate ;
  • the shape of the section of the protruding portion along the direction perpendicular to the bottom plate is trapezoidal.
  • the separation difficulty between the first casing and the second casing is increased, thereby improving the sealing performance of the first casing and the second casing.
  • the surface of the first side plate facing away from the first side plate has a convex portion.
  • the surface of the first side plate away from the first side plate is a plane.
  • the inner wall of the second side plate is in contact with all the outer walls of the first side plate.
  • the connecting area between the first side plate and the second side plate can be increased, and the connection reliability between the first shell and the second shell can be increased.
  • the inner wall of the second side plate is in contact with part of the outer wall of the first side plate.
  • the amount of materials used in the first casing and the second casing can be reduced to reduce costs, and the weight of the battery can also be reduced, thereby increasing the mass energy density of the battery.
  • the end of the first side plate away from the bottom plate bears against the top plate.
  • the end of the first side plate away from the bottom plate is spaced from the top plate.
  • the present application provides a battery.
  • the battery includes a battery cell and a packaging case, and the battery cell is accommodated in a cavity formed by the first casing and the second casing.
  • the battery has no flange edge, occupies a small space, and has good sealing performance between the first casing and the second casing.
  • the present application provides a terminal device, where the terminal device includes a battery.
  • FIG. 1 is a schematic cross-sectional view of a packaging case provided in the related art.
  • FIG. 2 is a schematic structural diagram of a mobile phone as a terminal device provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a battery provided in an embodiment of the present application.
  • FIG. 4 is a schematic cross-sectional view of a battery provided in an embodiment of the present application.
  • FIG. 5 is a schematic cross-sectional view of a packaging case in which an end portion of a first side plate is abutted against a top plate according to an embodiment of the present application.
  • FIG. 6 is a schematic cross-sectional view of a packaging case in which an end portion of a first side plate and a top plate are spaced apart according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an encapsulating case provided with annular recesses and protrusions according to an embodiment of the present application.
  • FIG. 8 is a schematic cross-sectional view of the packaging case shown in FIG. 7 along the VIII-VIII direction.
  • FIG. 9 is a schematic cross-sectional view of a package case in which the concave portion and the protruding portion both have rectangular cross-sections according to an embodiment of the present application.
  • FIG. 10 is a schematic cross-sectional view of an encapsulation case in which both the recessed part and the protruding part have triangular cross-sections provided by the embodiment of the present application.
  • FIG. 11 is a schematic cross-sectional view of a package case in which the recessed portion and the protruding portion have trapezoidal cross-sections according to an embodiment of the present application.
  • FIG. 12 is a schematic cross-sectional view of a package case in which both the recessed part and the protruding part have trapezoidal cross-sections according to the embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of an encapsulation case provided with two ring-shaped recesses and protrusions according to an embodiment of the present application.
  • FIG. 14 is a schematic cross-sectional view of the package shown in FIG. 13 along the XIV-XIV direction.
  • FIG. 15 is a schematic structural diagram of a packaging case provided with recessed portions and protruding portions disposed at intervals according to an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of an encapsulation case provided with two circles of spaced apart recesses and protrusions according to an embodiment of the present application.
  • FIG. 17 is a schematic cross-sectional view of a packaging case with a protrusion provided by an embodiment of the present application.
  • connection used in the specification and claims of the present application is not limited to physical or mechanical connection, no matter it is direct or indirect. of. "Up”, “Down”, “Above”, “Bottom”, “Left”, “Right” and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship is also corresponding Change.
  • the present application provides a terminal device 300, which can be any product including a battery 200, including but not limited to mobile phones, laptop computers, cameras, monitors, remote controls, vacuum cleaners, cars, etc.
  • the terminal device 300 is a mobile phone as an example for illustration.
  • FIG. 3 is a schematic structural diagram of a battery 200 provided in an embodiment of the present application.
  • the battery 200 may be a primary battery or a secondary battery.
  • the primary battery includes a zinc-manganese dry battery
  • the secondary battery includes a lithium-ion battery, a nickel-metal hydride battery, a lead-acid battery, etc., and the battery 200 is used in the terminal device 300 .
  • the battery 200 includes the package case 100 and the battery cell 210 .
  • the packaging case 100 includes a first casing 10 and a second casing 20, and a hollow and airtight packaging casing 100 is formed between the first casing 10 and the second casing 20, and the inside of the casing is used to accommodate the battery cell 210 to form the battery 200.
  • the shape of the battery 200 is not limited, and the shape of the battery 200 may be a regular shape or an irregular shape, that is, a special shape. Wherein, when the battery 200 has a regular shape, it may include a rectangular battery, a button battery, a cylindrical battery, etc. In this embodiment, the battery is a rectangular battery as an example for illustration.
  • the first housing 10 includes a bottom plate 11 and a first side plate 13 .
  • the first side plate 13 is annularly disposed around the periphery of the bottom plate 11 , and the first side plate 13 extends on a surface of the bottom plate 11 toward a direction away from the bottom plate 11 .
  • the second housing 20 includes a top panel 21 and a second side panel 23 .
  • the second side plate 23 is annularly disposed on the periphery of the top plate 21 .
  • the second side plate 23 is on a surface of the top plate 21 and extends toward the first casing 10 .
  • the second housing 20 is covered on the first housing 10, and the inner wall 231 of the second side plate 23 is in contact with the outer wall 131 of the first side plate 13, so that the first housing 10 and the second housing 20 form a A sealed packaging case 100 having a cavity 30 for accommodating the battery cell 210 .
  • the packaging structure of the first housing 10 and the second housing 20 avoids the generation of flange edges (see FIG. 1 ), and when the packaging housing 100 encapsulates the electric core 210 and is applied to the terminal device 300, the packaging housing 100 is reduced. Occupied space in the terminal device 300; on the other hand, the inner wall 231 of the second side plate 23 is in contact with the outer wall 131 of the first side plate 13, increasing the connection area between the first housing 10 and the second housing 20 , improve the sealing performance of the packaging case 100, and fundamentally avoid the possibility of false soldering.
  • the material of the first shell 10 and the second shell 20 is metal or metal alloy.
  • the metal material can be aluminum, copper, etc., and the metal alloy can be stainless steel, nickel alloy, chromium alloy, etc. Both the first shell 10 and the second shell 20 can be formed by stamping.
  • the first side plate 13 and the second side plate 23 can be connected by laser welding. Wherein, by laser welding the first side plate 13 and the second side plate 23 , the connection reliability between the first shell 10 and the second shell 20 is high, and the processing method of laser welding is easier to operate.
  • the bottom plate 11 and the first side plate 13 can be an integral structure, which is convenient for forming; they can also be two independent parts, which are then connected by welding, bonding and other means.
  • the bottom plate 11 and the first side plate 13 are integrated, which can improve the sealing performance of the packaging case 100 .
  • the top plate 21 and the second side plate 23 can be an integral structure, which is convenient for forming; they can also be two independent parts, and then connected by welding, bonding and other means. In this embodiment, the top plate 21 and the second side plate 23 are integrated, which can improve the sealing performance of the packaging case 100 .
  • the inner wall 231 of the second side plate 23 can be connected with all the outer walls 131 of the first side plate 13 to increase the connection area between the first side plate 13 and the second side plate 23 .
  • the inner wall 231 of the second side plate 23 may also only be in contact with part of the outer wall 131 of the first side plate 13 , which can reduce the material of the first shell 10 and the second shell 20 The amount is used to reduce the cost, and the weight of the battery 200 can also be reduced, thereby increasing the mass energy density of the battery 200 .
  • the end of the first side plate 13 away from the bottom plate 11 may abut against the top plate 21 (see FIG. 5 ), or be spaced apart from the top plate 21 (see FIG. 6 ).
  • the area where the first side plate 13 is connected to the second side plate 23 is provided with a recessed portion 133 , and the recessed portion 133 is recessed from the outer wall 131 of the first side plate 13 toward the direction away from the second side plate 23 form.
  • the area where the second side plate 23 is connected to the first side plate 13 is provided with a protruding portion 233 , and the protruding portion 233 is formed by protruding from the inner wall 231 of the second side plate 23 toward the direction of the first side plate 13 .
  • the protruding portion 233 is accommodated in the recessed portion 133 , and the recessed portion 133 limits the protruding portion 233 in the recessed portion 133 to prevent the protruding portion 233 from moving and prevent the second housing 20 from moving compared with the first housing 10 , to increase the connection reliability between the second housing 20 and the first housing 10, thereby improving the sealing performance of the package case 100; in addition, the setting of the protruding portion 233 and the concave portion 133 increases the connection between the first side plate 13 and the second side plate.
  • the connecting area of the board 23 is used to improve the sealing performance of the package case 100 .
  • the recessed portion 133 may be continuously and annularly disposed on the first side plate 13
  • the protruding portion 233 may be continuously and annularly disposed on the second side plate 23 accordingly.
  • the concave portion 133 and the protruding portion 233 can be formed by stamping.
  • the recessed portion 133 may be a plurality of first sub-recessed portions (not shown) spaced apart from each other, and the plurality of first sub-recessed portions are arranged in a circular arrangement on the first side plate 13, and the protruding portion 233 also corresponds to a plurality of first sub-protrusions 233a (see FIG. 15 ) arranged in a circular arrangement on the second side plate 23, and the number of the first sub-protrusions 233a is the same as that of the first sub-recesses.
  • the cross section of the recessed portion 133 along the direction perpendicular to the bottom plate 11 or the top plate 21 can be regular or irregular;
  • the regular shape includes but not limited to at least one of an arc (as shown in Figure 8), a square, a rectangle (as shown in Figure 9), a triangle (as shown in Figure 10), and a trapezoid (as shown in Figure 11, Figure 12).
  • the cross-section of the recessed portion 133 is arc-shaped, and the cross-section of the protruding portion 233 is also arc-shaped to match the recessed portion 133 .
  • the arc-shaped concave part 133 and the protruding part 233 make the surface transition smoothly, avoid sharp corners, and improve user experience; furthermore, it can also avoid the inner wall of the first side plate 13 synchronously deforming sharp corners, which may cause puncture Possibility of batteries 210.
  • the cross-section of the recessed portion 133 is rectangular, and the cross-section of the protruding portion 233 is also rectangular to match the recessed portion 133 .
  • the cross-section of the recessed portion 133 is triangular, and the cross-section of the protruding portion 233 is also a triangular shape suitable for the recessed portion 133 .
  • the cross section of the recessed part 133 is trapezoidal, the short side of the trapezoid is located on the side away from the second side plate 23, the long side of the trapezoid is located on the side facing the second side plate 23, and the convex
  • the cross-section of the extension portion 233 is also a trapezoid that matches the depression portion 133 .
  • the trapezoidal shape in this embodiment is easier to process and form.
  • the cross section of the recessed part 133 is trapezoidal, the short side of the trapezoid is located on the side facing the second side plate 23, the long side of the trapezoid is located on the side away from the second side plate 23, and the convex
  • the cross-section of the extension portion 233 is also a trapezoid that fits with the depression portion 133 .
  • the matching trapezoidal structure in this embodiment increases the difficulty of separation between the first housing 10 and the second housing 20 , thereby improving the sealing performance of the first housing 10 and the second housing 20 .
  • the concave portion 133 is composed of a plurality of first sub-depressions, and the protruding portion is correspondingly composed of a plurality of first sub-protrusions
  • the above cross-sectional shapes can also be combined in the same embodiment.
  • the recessed portion 133 has a rectangular and trapezoidal cross section
  • the protruding portion 233 also has a rectangular and trapezoidal cross section matching the recessed portion 133 .
  • the number of recessed parts 133 can be one (as shown in Figures 7 and 15) or more (as shown in Figures 13 and 16), and the number of protruding parts 233 Corresponding to the number of recessed parts 133 is one or more.
  • the recessed portion 133 when the recessed portion 133 includes the second sub-recessed portion 133b, the plurality of second sub-recessed portions 133b can be arranged in parallel and spaced apart along the extending direction of the second side plate 23, and each A second sub-recessed portion 133b is annularly disposed along the outer wall 131 of the first side plate 13 .
  • a plurality of second sub-recesses 133b are arranged at intervals.
  • the protruding portion 233 also correspondingly includes a plurality of second sub-protruding portions 233 b arranged at intervals, and each second sub-protruding portion 233 b is annularly disposed along the inner wall 231 of the second side plate 23 .
  • a plurality of second sub-recesses 133b and second sub-protrusions 233b corresponding thereto are provided.
  • the plurality of second sub-recesses 133b and the plurality of second sub-protrusions 233b further increase the connection reliability between the first housing 10 and the second housing 20 , thereby increasing the sealing performance of the packaging case 100 .
  • the recessed portion 133 includes a plurality of first sub-recessed portions disposed at intervals and arranged in an annular shape
  • the plurality of first sub-recessed portions are spaced apart from each other and arranged in an annular shape along the outer wall 131 of the first side plate 13
  • the number of the second sub-recesses 133b is multiple, and the plurality of second sub-recesses 133b are arranged at intervals along the extending direction of the second side plate 23; the plurality of first sub-protrusions 233a are mutually
  • the second sub-protrusions 233b are spaced apart and arranged in a ring shape.
  • the number of the second sub-protrusions 233b is multiple, and the plurality of second sub-protrusions 233b are arranged at intervals along the extending direction of the second side plate 23 .
  • the plurality of second sub-recesses 133 b and the plurality of second sub-protrusions 233 b further increase the connection reliability between the first housing 10 and the second housing 20 , thereby increasing the sealing performance of the packaging case 100 .
  • the inner wall of the first side plate 13 (that is, the surface of the first side plate 13 away from the second side plate 23 ) has a convex portion 135, and the convex portion 135 can be formed in the recessed portion 133.
  • the second side plate 23 and the side plate are directly punched after being attached to each other, and the protruding part 233 is formed on the second side plate 23, and on the first side plate 13.
  • the convex portion 135 is simultaneously formed on the inner wall of the first side plate 13 , the above processing method can be directly stamped, which is convenient for processing and saves processing cost.
  • the convex portion 135 may not be formed on the inner surface of the first side plate 13, that is, the inner surface of the first side plate 13 is a plane (see Figure 8 to Figure 12, Figure 14).
  • the convex portion 135 is not formed while the concave portion 133 is formed; it is also possible to form a groove on the outer wall 131 of the first side plate 13 in advance, and then The second side plate 23 is stamped with the first side plate 13 having a groove, and a part of the second side plate 23 fills the groove to form the protruding portion 233 .
  • the above-mentioned structure can prevent the electric core 210 from being squeezed due to the deformation of the inner wall of the first side plate 13 when the recessed portion 133 and the protruding portion 233 are formed, so that the first casing 10 and the second casing can be used to the maximum extent. 20 spaces between.

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

Abstract

一种封装壳,包括第一壳体与第二壳体。第一壳体包括底板与第一侧板,第一侧板围设于底板周缘;第二壳体包括顶板与第二侧板,第二侧板围设于顶板周缘并朝向第一壳体延伸;第二侧板的内壁与第一侧板的外壁接触连接。上述第一壳体与第二壳体组成的封装结构,避免法兰边的产生,在封装壳应用于终端装置中时,减小封装壳在终端装置中的占用空间;另一方面,第二侧板的内壁与第一侧板的外壁接触连接,增加第一壳体与第二壳体之间的连接面积,提升封装壳的密封性能,从根本上避免产生虚焊的可能性。本申请还提供一种包括封装壳的电池与终端装置。

Description

封装壳、电池以及终端装置
相关申请的交叉引用
本申请要求在2021年12月10日提交中国专利局、申请号为202123115345.6、申请名称为“封装壳、电池以及终端装置”,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池封装技术领域,尤其涉及一种封装壳、电池以及终端装置。
背景技术
电池包括电芯以及用于封装电芯的封装壳。相关技术中的封装壳100’(请参阅图1)包括第一壳体10’与第二壳体20’,第一壳体10’与第二壳体20’采用法兰边(如图1中的区域A)的连接方式进行封装,则封装后的电池占用空间大,增加了电池的安装体积;另外,法兰边的区域还会产生虚焊的可能,导致第一壳体10’与第二壳体20’未完全密封或容易相互分离,影响电池的安全使用。
发明内容
有鉴于此,有必要提供一种占用空间小、连接可靠的封装壳、包括封装壳的电池以及终端装置,以解决上述技术问题。
第一方面,本申请提供一种封装壳,封装壳包括第一壳体与第二壳体。第一壳体包括底板与第一侧板,第一侧板围设于底板周缘;第二壳体包括顶板与第二侧板,第二侧板围设于顶板周缘并朝向第一壳体延伸;第二侧板的内壁与第一侧板的外壁接触连接。
上述设计中,第一壳体与第二壳体的封装结构,避免法兰边的产生,在封装壳应用于终端装置中时,减小封装壳在终端装置中的占用空间;另一方面,第二侧板的内壁与第一侧板的外壁接触连接,增加第一壳体与第二壳体之间的连接面积,提升封装壳的密封性能,从根本上避免产生虚焊的可能性。
在一种可能的设计中,第一侧板上设置有凹陷部,第二侧板上设置有凸伸部,凸伸部容置于凹陷部中。
上述设计中,凹陷部与凸伸部的设置,一方面,凹陷部具有限位凸伸部的作用,防止凸伸部的移动,增加第二壳体相较于第一壳体的连接可靠性;另一方面,增加第一侧板与第二侧板的连接面积,从而提升第一壳体与第二壳体的密封性能。
在一种可能的设计中,凹陷部沿第一侧板的外壁呈环状设置,凸伸部沿第二侧板的内壁呈环状设置。
上述设计中,环状的凹陷部具有限位凸伸部的作用,防止凸伸部的移动,增加第二壳体与第一壳体的连接可靠性;另一方面,进一步增加第一侧板与第二侧板的连接面积,从而提升第一壳体与第二壳体的密封性能。
在一种可能的设计中,凹陷部包括多个连续环状的第二子凹陷部,多个第二子凹陷部沿第二侧板的延伸方向间隔设置;凸伸部包括多个连续环状的第二子凸伸部,多个第二子凸伸部沿第二侧板的延伸方向间隔设置。
上述设计中,多个连续环状的第二子凹陷部,可以进一步增加第二壳体与第一壳体的连接可靠性。
在一种可能的设计中,凹陷部包括多个第一子凹陷部,多个第一子凹陷部相互间隔并呈环状排列;凸伸部包括多个第一子凸伸部,多个第一子凸伸部相互间隔并呈环状排列。
上述设计中,多个第一子凹陷部具有限位多个第一子凸伸部的作用,防止第一子凸伸部的移动,增加第二壳体与第一壳体的连接可靠性;另一方面,进一步增加第一侧板与第二侧板的连接面积,从而提升第一壳体与第二壳体的密封性能。
在一种可能的设计中,多个第一子凹陷部相互间隔并呈环状排列成第二子凹陷部,第二子凹陷部的数量为多个,多个第二子凹陷部沿第二侧板的延伸方向间隔设置;多个第一子凸伸部相互间隔并呈环状排列成第二子凸伸部,第二子凸伸部的数量为多个,多个第二子凸伸部沿第二侧板的延伸方向间隔设置。
上述设计中,可以进一步增加第二壳体与第一壳体的连接可靠性。
在一种可能的设计中,凹陷部沿垂直于底板的方向的截面的形状包括弧形、正方形、长方形、三角形以及梯形中的至少一种;凸伸部沿垂直于底板的方向的截面的形状包括弧形、正方形、长方形、三角形以及梯形中的至少一种。
上述设计中,可以根据需要,冲压呈所需要的凹陷部和凸伸部的形状。
在一种可能的设计中,凹陷部沿垂直于底板的方向的截面的形状为弧形,凸伸部沿垂直于底板的方向的截面的形状为弧形。
上述设计中,弧形的凹陷部凸伸部,使表面平滑过渡,可以避免尖角产生,提升用户使用感受;进一步地,还可以避免第一侧板的内壁同步变形尖角,会存在刺破电芯的可能性。
在一种可能的设计中,凹陷部沿垂直于底板的方向的截面的形状为长方形;凸伸部沿垂直于底板的方向的截面的形状为长方形。
上述设计中,为凹陷部与凸伸部可能的一种实施方式。
在一种可能的设计中,凹陷部沿垂直于底板的方向的截面的形状为三角形,凸伸部沿垂直于底板的方向的截面的形状为三角形。
上述设计中,为凹陷部与凸伸部可能的一种实施方式。
在一种可能的设计中,凹陷部沿垂直于底板的方向的截面的形状为梯形,梯形的短边位于背离第二侧板的一侧,梯形的长边位于朝向第二侧板的一侧;凸伸部沿垂直于底板的方向的截面的形状为梯形。
上述设计中,梯形的短边位于背离第二侧板的一侧,梯形的长边位于朝向第二侧板的一侧,更容易加工形成。
在一种可能的设计中,凹陷部沿垂直于底板的方向的截面的形状为梯形,梯形的短边位于朝向第二侧板的一侧,梯形的长边位于背离第二侧板的一侧;凸伸部沿垂直于底板的方向的截面的形状为梯形。
上述设计中,增加第一壳体与第二壳体之间的分离难度,从而提升第一壳体与第二壳体的密封性能。
在一种可能的设计中,第一侧板背离第一侧板的表面具有凸部。
上述设计中,为冲压第一壳体与第二壳体时,可能存在的一种实施方式。
在一种可能的设计中,第一侧板背离第一侧板的表面为平面。
上述设计中,可以避免在形成凹陷部与凸伸部的时候,因第一侧板的内壁产生形变而挤压电芯,从而可以最大限度地利用第一壳体与第二壳体之间的空间。
在一种可能的设计中,第二侧板的内壁与第一侧板的全部外壁接触连接。
上述设计中,可以增加第一侧板与第二侧板之间的连接面积,增加第一壳体与第二壳体的连接可靠性。
在一种可能的设计中,第二侧板的内壁与第一侧板的部分外壁接触连接。
上述设计中,可以减少第一壳体与第二壳体的材料用量以减少成本,还可以减小电池的重量,从而提升电池的质量能量密度。
在一种可能的设计中,第一侧板背离底板的端部抵持于顶板。
上述设计中,可以根据电芯的大小以及第一壳体与第二壳体密封形成的腔体的空间进行设置。
在一种可能的设计中,第一侧板背离底板的端部与顶板间隔设置。
上述设计中,可以根据电芯的大小以及第一壳体与第二壳体密封形成的腔体的空间进行设置。
第二方面,本申请提供一种电池,电池包括电芯以及封装壳,电芯容置于第一壳体与第二壳体形成的腔体中。
上述设计中,电池没有法兰边,占用空间小,且第一壳体与第二壳体密封性能好。
第三方面,本申请提供一种终端装置,终端装置包括电池。
附图说明
图1为相关技术中提供的封装壳的截面示意图。
图2为本申请实施例提供的终端装置为手机的结构示意图。
图3为本申请实施例提供的电池的结构示意图。
图4为本申请实施例提供的电池的截面示意图。
图5为本申请实施例提供的第一侧板的端部抵持于顶板上的封装壳的截面示意图。
图6为本申请实施例提供的第一侧板的端部与顶板间隔设置的封装壳的截面示意图。
图7为本申请实施例提供设置有环状的凹陷部与凸伸部的封装壳的结构示意图。
图8为图7所示的封装壳沿VIII-VIII方向的截面示意图。
图9为本申请实施例提供的凹陷部与凸伸部的截面均为长方形的封装壳的截面示意图。
图10为本申请实施例提供的凹陷部与凸伸部的截面均为三角形的封装壳的截面示意图。
图11为本申请实施例提供的凹陷部与凸伸部的截面均为梯形的封装壳的截面示意图。
图12为本申请实施例提供的凹陷部与凸伸部的截面均为梯形的封装壳的截面示意图。
图13为本申请实施例提供设置有两圈环状的凹陷部与凸伸部的封装壳的结构示意图。
图14为图13所示的封装壳沿XIV-XIV方向的截面示意图。
图15为本申请实施例提供设置有间隔设置的凹陷部与凸伸部的封装壳的结构示意图。
图16为本申请实施例提供设置有两圈间隔设置的凹陷部与凸伸部的封装壳的结构示意图。
图17为本申请实施例提供的具有凸部的封装壳的截面示意图。
主要元件符号说明
终端装置                  300
电池                      200
电芯                      210
封装壳                    100、100’
第一壳体                  10、10’
底板                      11
第一侧板                  13
外壁                      131
凹陷部                    133
第二子凹陷部              133b
凸部                      135
第二壳体                  20、20’
顶板                      21
第二侧板                  23
内壁                      231
凸伸部                    233
第一子凸伸部              233a
第二子凸伸部              233b
腔体                      30
具体实施方式
为了能够更清楚地理解本申请的上述目的、特征和优点,下面结合附图和具体实施方式对本申请进行详细描述。需要说明的是,在不冲突的情况下,本申请的实施方式及实施方式中的特征可以相互组合。在下面的描述中阐述了很多具体细节以便于充分理解本申请,所描述的实施方式仅仅是本申请一部分实施方式,而不是全部的实施方式。
除非另有定义,本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的,不是旨在于限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的所有的和任意的组合。
在本申请的各实施例中,为了便于描述而非限制本申请,本申请专利申请说明书以及权利要求书中使用的术语“连接”并非限定于物理的或者机械的连接,不管是直接的还是间接的。“上”、“下”、“上方”、“下方”、“左”、“右”等仅用于表示相对位置关系,当被描述对象的绝对位置改变后,则该相对位置关系也相应地改变。
请参阅图2,本申请提供一种终端装置300,终端装置300可以是任何包括电池200的产品,包括但不限于手机、笔记本电脑、相机、监控器、遥控器、吸尘器、汽车等,在本实施例中,以终端装置300为手机为例进行说明。
请一并参阅图3,为本申请实施例提供的电池200的结构示意图。电池200可以是一次电池或者二次电池。一次电池包括锌锰干电池,二次电池包括锂离子电池、镍氢电池、铅酸电池等,电池200应用于终端装置300中。
请一并参阅图3和图4,电池200包括封装壳100以及电芯210。封装壳100包括第一壳体10与第二壳体20,第一壳体10与第二壳体20之间形成一内部中空且密闭的封装壳100,壳体的内部用于容置电芯210以形成电池200。电池200的形状不限制,电池200的形状可以是规则形状,也可以不规则的形状,即是异形形状。其中,电池200为规则形状时,可以包括矩形电池、纽扣电池、柱状电池等,在本实施例中,以电池为矩形电池为例进行说明。
请一并参阅图5,第一壳体10包括底板11与第一侧板13。第一侧板13呈环状围设于底板11的周缘,第一侧板13在底板11的一表面朝向背离底板11的方向延伸。第二壳体20包括顶板21与第二侧板23。第二侧板23呈环状围设于顶板21的周缘,第二侧板23在顶板21的一表面并朝向第一壳体10延伸。第二壳体20盖合于第一壳体10上,第二侧板23的内壁231与第 一侧板13的外壁131接触连接,从而以使第一壳体10与第二壳体20形成一具有腔体30且密封的封装壳100,腔体30用于容置电芯210。
第一壳体10与第二壳体20的封装结构,避免法兰边(请参阅图1)的产生,在封装壳100封装电芯210并应用于终端装置300中时,减小封装壳100在终端装置300中的占用空间;另一方面,第二侧板23的内壁231与第一侧板13的外壁131接触连接,增加第一壳体10与第二壳体20之间的连接面积,提升封装壳100的密封性能,并从根本上避免产生虚焊的可能性。
第一壳体10与第二壳体20的材质为金属或金属合金,金属材质可以是铝、铜等,金属合金可以是不锈钢、镍合金、铬合金等。第一壳体10与第二壳体20均可以是冲压形成。
第一侧板13与第二侧板23可以通过激光焊接的方式连接。其中,通过激光焊接第一侧板13与第二侧板23,第一壳体10与第二壳体20的连接可靠性高,且激光焊接的加工方式更容易操作。
底板11与第一侧板13可以是一体结构,便于成型;也可以是独立的两个部分,然后通过焊接、粘结等方式连接。在本实施例中,底板11与第一侧板13为一体结构,可以提升封装壳100的密封性能。
顶板21与第二侧板23可以是一体结构,便于成型;也可以是独立的两个部分,然后通过焊接、粘结等方式连接。在本实施例中,顶板21与第二侧板23为一体结构,可以提升封装壳100的密封性能。
在一些实施例中,第二侧板23的内壁231可以与第一侧板13的全部外壁131接触连接,增加第一侧板13与第二侧板23之间的连接面积。请参阅图5,在一些实施例中,第二侧板23的内壁231也可以仅与第一侧板13的部分外壁131接触连接,可以减少第一壳体10与第二壳体20的材料用量以减少成本,还可以减小电池200的重量,从而提升电池200的质量能量密度。
第一侧板13背离底板11的端部可以与顶板21抵接(请参阅图5),也可以与顶板21间隔设置(请参阅图6)。
请参阅图7和图8,第一侧板13与第二侧板23连接的区域设置有凹陷部133,凹陷部133由第一侧板13的外壁131朝向背离第二侧板23的方向凹陷形成。第二侧板23与第一侧板13连接的区域设置有凸伸部233,凸伸部233由第二侧板23的内壁231朝向第一侧板13的方向凸伸形成。凸伸部233容置于凹陷部133中,凹陷部133将凸伸部233限位于凹陷部133中,防止凸伸部233的移动,避免第二壳体20相较于第一壳体10移动,增加第二壳体20与第一壳体10的连接可靠性,进而提升封装壳100的密封性能;另外,凸伸部233与凹陷部133的设置,增加第一侧板13与第二侧板23的连接面积,以提升封装壳100的密封性能。
请参阅图7,在一些实施例中,凹陷部133可以呈连续地环状设置于第一侧板13上,凸伸部233也相应的呈连续地环状设置于第二侧板23上。凹陷部133与凸伸部233可以通过冲压的方式形成。
在一些实施例中,凹陷部133可以是多个相互间隔的第一子凹陷部(图 未示),多个第一子凹陷部呈环状排列设置于第一侧板13上,凸伸部233也相应的是多个第一子凸伸部233a(请参阅图15)呈环状排列设置于第二侧板23上,第一子凸伸部233a与第一子凹陷部的数量相同。
请参阅图8至图12,凹陷部133沿垂直于底板11或者顶板21的方向的截面可以是规则形状,也可以是不规则形状;凸伸部233也具有与凹陷部133相对应的形状。其中,规则形状包括但不限于弧形(如图8)、正方形、长方形(如图9)、三角形(如图10)、梯形(如图11、图12)中的至少一种。
请参阅图8,在一些实施例中,凹陷部133的截面呈弧形,凸伸部233的截面也呈与凹陷部133相是适配的弧形。弧形的凹陷部133和凸伸部233,使表面平滑过渡,可以避免尖角产生,提升用户使用感受;进一步地,还可以避免第一侧板13的内壁同步变形尖角,会存在刺破电芯210的可能性。
请参阅图9,在一些实施例中,凹陷部133的截面呈长方形,凸伸部233的截面也呈与凹陷部133相适配的长方形。
请参阅图10,在一些实施例中,凹陷部133的截面呈三角形,凸伸部233的截面也呈与凹陷部133相适配的三角形。
请参阅图11,在一些实施例中,凹陷部133的截面呈梯形,梯形的短边位于背离第二侧板23的一侧,梯形的长边位于朝向第二侧板23的一侧,凸伸部233的截面也呈与凹陷部133相是适配的梯形。本实施例中的梯形形状更容易加工形成。
请参阅图12,在一些实施例中,凹陷部133的截面呈梯形,梯形的短边位于朝向第二侧板23的一侧,梯形的长边位于背离第二侧板23的一侧,凸伸部233的截面也呈与凹陷部133相适配的梯形。本实施例中的相适配的梯形结构,增加第一壳体10与第二壳体20之间的分离难度,从而提升第一壳体10与第二壳体20的密封性能。
需要说明的是,凹陷部133由多个第一子凹陷部组成、凸伸部也相应的由多个第一子凸伸部组成时,上述截面的形状也可以在同一实施例中相互组合。例如,在同一实施例中,凹陷部133的截面为长方形以及梯形,凸伸部233的截面也呈与凹陷部133相适配的长方形与梯形。
在一些实施例中,沿第二侧板23的延伸方向,凹陷部133的数量可以为一个(如图7和图15)或多个(如图13和图16),凸伸部233的数量与凹陷部133的数量相应的为一个或多个。
具体地,请参阅图13和图14,当凹陷部133为包括第二子凹陷部133b时,该多个第二子凹陷部133b可沿第二侧板23的延伸方向平行间隔设置,且每一第二子凹陷部133b均沿第一侧板13的外壁131一周呈环状设置。多个第二子凹陷部133b间隔设置。凸伸部233也相应的包括多个第二子凸伸部233b并间隔设置,且每一第二子凸伸部233b均沿第二侧板23的内壁231一周呈环状设置。沿第二侧板23的延伸方向,设置多个第二子凹陷部133b以及与之相适配的第二子凸伸部233b。多个第二子凹陷部133b与多个第二子凸伸部233b,进一步增加第一壳体10与第二壳体20之间的连接可靠性,从 而增加封装壳100的密封性能。
请参阅图16,当凹陷部133包括多个间隔设置且呈环状排列的第一子凹陷部时,多个第一子凹陷部相互间隔并沿第一侧板13的外壁131呈环状排列成第二子凹陷部133b,第二子凹陷部133b的数量为多个,多个第二子凹陷部133b沿第二侧板23的延伸方向间隔设置;多个第一子凸伸部233a相互间隔并呈环状排列成第二子凸伸部233b,第二子凸伸部233b的数量为多个,多个第二子凸伸部233b沿第二侧板23的延伸方向间隔设置。多个第二子凹陷部133b与多个第二子凸伸部233b,进一步增加第一壳体10与第二壳体20之间的连接可靠性,从而增加封装壳100的密封性能。
请参阅图17,在一些实施例中,第一侧板13的内壁(即第一侧板13背离第二侧板23的表面)具有凸部135,凸部135可以是在形成凹陷部133的过程中同步形成,即在组装电池200的过程中,第二侧板23与一侧板相互贴合后直接冲压,在第二侧板23上形成凸伸部233、在第一侧板13上形成凹陷部133的同时,在第一侧板13的内壁上同步形成凸部135,上述加工方式可以直接冲压,加工方便,节约加工成本。
在一些实施例中,在第一侧板13上形成凹陷部133的同时,也可以不在第一侧板13的内表面形成凸部135,即第一侧板13的内表面为平面(请参阅图8至图12、图14)。其中,可以由于第一壳体10材质的延展性,在形成凹陷部133的同时,并未形成凸部135;还可以是预先在第一侧板13的外壁131上形成凹槽,然后再将第二侧板23与具有凹槽的第一侧板13进行冲压,第二侧板23的部分区域填充凹槽以形成凸伸部233。上述结构可以避免在形成凹陷部133与凸伸部233的时候,因第一侧板13的内壁产生形变而挤压电芯210,从而可以最大限度地利用第一壳体10与第二壳体20之间的空间。
以上实施方式仅用以说明本申请的技术方案而非限制,尽管参照以上较佳实施方式对本申请进行了详细说明,本领域的普通技术人员应当理解,可以对本申请的技术方案进行修改或等同替换都不应脱离本申请技术方案的精神和范围。

Claims (20)

  1. 一种封装壳,其特征在于,包括:
    第一壳体,包括底板与第一侧板,所述第一侧板围设于所述底板周缘;以及
    第二壳体,包括顶板与第二侧板,所述第二侧板围设于所述顶板周缘并朝向所述第一壳体延伸;
    其中,所述第二侧板的内壁与所述第一侧板的外壁接触连接。
  2. 根据权利要求1所述的封装壳,其特征在于,所述第一侧板上设置有凹陷部,所述第二侧板上设置有凸伸部,所述凸伸部容置于所述凹陷部中。
  3. 根据权利要求2所述的封装壳,其特征在于,所述凹陷部沿所述第一侧板的外壁呈环状设置,所述凸伸部沿所述第二侧板的内壁呈环状设置。
  4. 根据权利要求3所述的封装壳,其特征在于,所述凹陷部包括多个环状的第二子凹陷部,多个所述第二子凹陷部沿所述第二侧板的延伸方向间隔设置;所述凸伸部包括多个连续环状的第二子凸伸部,多个所述第二子凸伸部沿所述第二侧板的延伸方向间隔设置。
  5. 根据权利要求2所述的封装壳,其特征在于,所述凹陷部包括多个第一子凹陷部,多个所述第一子凹陷部相互间隔并呈环状排列;所述凸伸部包括多个第一子凸伸部,多个所述第一子凸伸部相互间隔并呈环状排列。
  6. 根据权利要求5所述的封装壳,其特征在于,多个所述第一子凹陷部相互间隔并呈环状排列成第二子凹陷部,所述第二子凹陷部的数量为多个,多个所述第二子凹陷部沿所述第二侧板的延伸方向间隔设置;多个所述第一子凸伸部相互间隔并呈环状排列成第二子凸伸部,所述第二子凸伸部的数量为多个,多个所述第二子凸伸部沿所述第二侧板的延伸方向间隔设置。
  7. 根据权利要求2-6任意一项所述的封装壳,其特征在于,所述凹陷部沿垂直于所述底板的方向的截面的形状包括弧形、正方形、长方形、三角形以及梯形中的至少一种;所述凸伸部沿垂直于所述底板的方向的截面的形状包括弧形、正方形、长方形、三角形以及梯形中的至少一种。
  8. 根据权利要求2-6任意一项所述的封装壳,其特征在于,所述凹陷部沿垂直于所述底板的方向的截面的形状为弧形,所述凸伸部沿垂直于所述底板的方向的截面的形状为弧形。
  9. 根据权利要求2-6任意一项所述的封装壳,其特征在于,所述凹陷部沿垂直于所述底板的方向的截面的形状为长方形;所述凸伸部沿垂直于所述底板的方向的截面的形状为长方形。
  10. 根据权利要求2-6任意一项所述的封装壳,其特征在于,所述凹陷部沿垂直于所述底板的方向的截面的形状为三角形,所述凸伸部沿垂直于所述底板的方向的截面的形状为三角形。
  11. 根据权利要求2-6任意一项所述的封装壳,其特征在于,所述凹陷部沿垂直于所述底板的方向的截面的形状为梯形,所述梯形的短边位于背离所 述第二侧板的一侧,梯形的长边位于朝向所述第二侧板的一侧;所述凸伸部沿垂直于所述底板的方向的截面的形状为梯形。
  12. 根据权利要求2-6任意一项所述的封装壳,其特征在于,所述凹陷部沿垂直于所述底板的方向的截面的形状为梯形,所述梯形的短边位于朝向所述第二侧板的一侧,梯形的长边位于背离所述第二侧板的一侧;所述凸伸部沿垂直于所述底板的方向的截面的形状为梯形。
  13. 根据权利要求2-6任意一项所述的封装壳,其特征在于,所述第一侧板背离所述第一侧板的表面具有凸部。
  14. 根据权利要求2-6任意一项所述的封装壳,其特征在于,所述第一侧板背离所述第一侧板的表面为平面。
  15. 根据权利要求1-6任意一项所述的封装壳,其特征在于,所述第二侧板的内壁与所述第一侧板的全部外壁接触连接。
  16. 根据权利要求1-6任意一项所述的封装壳,其特征在于,所述第二侧板的内壁与所述第一侧板的部分外壁接触连接。
  17. 根据权利要求1-6任意一项所述的封装壳,其特征在于,所述第一侧板背离所述底板的端部抵持于所述顶板。
  18. 根据权利要求1-6任意一项所述的封装壳,其特征在于,所述第一侧板背离所述底板的端部与所述顶板间隔设置。
  19. 一种电池,其特征在于,所述电池包括:
    电芯;以及
    权利要求1-18任意一项所述的封装壳,所述电芯容置于所述第一壳体与所述第二壳体形成的腔体中。
  20. 一种终端装置,其特征在于,所述终端装置包括权利要求19所述的电池。
PCT/CN2022/114627 2021-12-10 2022-08-24 封装壳、电池以及终端装置 WO2023103460A1 (zh)

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