WO2022000423A1 - 电池及电子装置 - Google Patents

电池及电子装置 Download PDF

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Publication number
WO2022000423A1
WO2022000423A1 PCT/CN2020/099931 CN2020099931W WO2022000423A1 WO 2022000423 A1 WO2022000423 A1 WO 2022000423A1 CN 2020099931 W CN2020099931 W CN 2020099931W WO 2022000423 A1 WO2022000423 A1 WO 2022000423A1
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WO
WIPO (PCT)
Prior art keywords
conductive
conductive member
battery
pole piece
conductive region
Prior art date
Application number
PCT/CN2020/099931
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English (en)
French (fr)
Inventor
张国文
马武
Original Assignee
宁德新能源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德新能源科技有限公司 filed Critical 宁德新能源科技有限公司
Priority to CN202080102112.1A priority Critical patent/CN115885414A/zh
Priority to PCT/CN2020/099931 priority patent/WO2022000423A1/zh
Publication of WO2022000423A1 publication Critical patent/WO2022000423A1/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
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • 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 field of batteries, and in particular, to a battery and an electronic device having the battery.
  • the shell of the existing battery is usually a metal shell. After the metal shell is connected to the cell inside the shell, the entire area of the metal shell will be polarized, so that the non-connected area of the battery will not be connected during the installation and use of the battery. It is necessary to wrap the insulating glue, which increases the process cost and increases the energy density loss of the battery.
  • the electrodes of the metal shell battery there are two ways to export the electrodes of the metal shell battery: one is to set a pole on the shell, which will occupy the thickness of the battery and reduce the energy density of the battery; the other is to make the gap between the two shells. Insulation; the two housings are of different polarities, but the insulating structure makes the walls of the two housings overlap, which also adversely affects the energy density.
  • the present application provides a battery and an electronic device having the battery, by arranging a first conductive area and a first non-conductive area on a casing, and using a first conductive member to connect the first conductive area and the electrode assembly
  • the first pole piece so that only the conductive area of the casing has polarity, and other areas have no polarity, thereby eliminating the process of wrapping insulating glue on the outside of the battery, reducing process costs and reducing energy density loss.
  • An embodiment of the present application provides a battery, including a casing and an electrode assembly disposed in the casing, the electrode assembly including a first pole piece, a second pole piece and a separator, the separator being arranged on the Between the first pole piece and the second pole piece, the electrode assembly is formed by winding the first pole piece, the isolation film and the second pole piece.
  • the housing includes a first wall including a first conductive region and a first non-conductive region connected to the first conductive region.
  • the electrode assembly further includes a first conductive member that electrically connects the first pole piece and the first conductive region.
  • the housing further includes a second wall opposite to the first wall, and a side wall between the first wall and the second wall.
  • the second wall includes a second conductive region and a second non-conductive region connected to the second conductive region.
  • the electrode assembly further includes a second conductive member, the second conductive member is electrically connected to the second pole piece and the second conductive region, and an insulating member is arranged between the first conductive member and the second conductive member .
  • a side of the first conductive region facing the electrode assembly is provided with a first groove, and one end of the first conductive member is provided in the first groove.
  • the first conductive region is connected to the first conductive member by welding.
  • the peripheral side of the first conductive region is provided with a second groove
  • the first non-conductive region is provided with a first protrusion
  • the first protrusion is provided on the second in the groove.
  • the electrode assembly includes a first end surface, the first end surface faces the first wall, and one end of the first conductive member protrudes from the first end surface and is connected to the first end surface.
  • the conductive regions are electrically connected.
  • first conductive member is provided with a first protruding portion, and the first protruding portion abuts against the first end surface.
  • the electrode assembly includes a second end surface disposed opposite to the first end surface, the second end surface faces the second wall, and one end of the second conductive member protrudes from the second end surface.
  • the second end face is electrically connected to the second conductive region.
  • one end of the second conductive member is provided with a second protruding portion, and the second protruding portion abuts against the second end surface.
  • first conductive member and the second conductive member are arranged side by side, and the first pole piece, the isolation film and the second pole piece surround the first conductive member and the second conductive member coiled.
  • the first conductive member and the second conductive member are stacked along an axial direction of the electrode assembly.
  • the first conductive area is made of metal material, and the first non-conductive area is made of plastic material.
  • the first conductive area and the first non-conductive area are connected by injection molding.
  • An electronic device includes a circuit element and the battery according to any one of the above, wherein the circuit element is electrically connected to the battery.
  • the above-mentioned battery sets the first conductive area and the first non-conductive area on the casing, and uses the first conductive member to connect the first conductive area and the first pole piece of the electrode assembly, so that only the conductive area of the casing has polarity, and the other The region is not polar, thereby eliminating the process of wrapping insulating glue on the outside of the battery, reducing process costs and reducing energy density loss.
  • the first conductive region for the first polarity, it is not necessary to set the pole lead-out polarity.
  • FIG. 1 is a schematic top-view structural diagram of a battery in an embodiment.
  • FIG. 2 is a schematic side view of the battery shown in FIG. 1 .
  • FIG. 3 is a schematic cross-sectional structure diagram of the battery shown in FIG. 1 along the A-A direction.
  • FIG. 4 is a schematic cross-sectional structure diagram of a battery in an embodiment.
  • FIG. 5 is a schematic cross-sectional structure diagram of a casing in an embodiment.
  • FIG. 6 is a schematic cross-sectional structure diagram of a housing in an embodiment.
  • FIG. 7 is a schematic cross-sectional structure diagram of a housing in an embodiment.
  • FIG. 8 is a schematic cross-sectional structure diagram of a casing in an embodiment.
  • FIG. 9 is a schematic cross-sectional structure diagram of a housing in an embodiment.
  • FIG. 10 is a schematic cross-sectional structure diagram of a housing in an embodiment.
  • FIG. 11 is a schematic structural diagram of the casing in other embodiments.
  • FIG. 12 is a structural block diagram of an electronic device in an embodiment.
  • the first pole piece 21 is the first pole piece 21
  • the first protrusion 241 The first protrusion 241
  • An embodiment of the present application provides a battery, including a casing and an electrode assembly disposed in the casing, the electrode assembly including a first pole piece, a second pole piece and a separator, and the separator is arranged on the Between the first pole piece and the second pole piece, the electrode assembly is formed by winding the first pole piece, the isolation film and the second pole piece.
  • the housing includes a first wall including a first conductive region and a first non-conductive region connected to the first conductive region.
  • the electrode assembly further includes a first conductive member, and the first conductive member is electrically connected to the first pole piece. The first conductive member is electrically connected to the first conductive region.
  • the above-mentioned battery sets the first conductive area and the first non-conductive area on the casing, and uses the first conductive member to connect the first conductive area and the first pole piece of the electrode assembly, so that only the conductive area of the casing has polarity, and the other The region is not polar, thereby eliminating the process of wrapping insulating glue on the outside of the battery, reducing process costs and reducing energy density loss.
  • the battery 100 includes a case 10 and an electrode assembly 20 disposed in the case 10 .
  • the electrode assembly 20 includes a first pole piece 21 , a second pole piece 22 and an isolation membrane 23 , and the isolation membrane 23 is disposed between the first pole piece 21 and the second pole piece 22 .
  • the electrode assembly 20 is formed by winding the first pole piece 21 , the isolation film 23 and the second pole piece 22 .
  • the housing 10 includes a first wall 11 including a first conductive area 111 and a first non-conductive area 112 connected to the first conductive area 111 .
  • the electrode assembly 20 further includes a first conductive member 24 , and the first conductive member 24 is electrically connected to the first pole piece 21 .
  • the first conductive member 24 is electrically connected to the first conductive region 111 , so that the first conductive region 111 is electrically connected to the first pole piece 21 .
  • the housing 10 further includes a second wall 12 disposed opposite to the first wall 11 , and a side wall 13 located between the first wall 11 and the second wall 12 .
  • the second wall 12 includes a second conductive region 121 and a second non-conductive region 122 connected to the second conductive region 121 .
  • the electrode assembly 20 further includes a second conductive member 25 , and the second conductive member 25 is electrically connected to the second pole piece 22 and the second conductive region 121 .
  • An insulating member 26 is disposed between the first conductive member 24 and the second conductive member 25 to prevent a short circuit inside the battery 100 .
  • the second wall 12 can also be a metal shell, and the electrode assembly 20 does not include the second conductive member 25 , so that the tabs of the second pole piece 22 can be electrically connected to the second wall 12 .
  • the electrode assembly 20 includes a first end surface 27 and a second end surface 28 opposite to the first end surface 27 .
  • the first end surface 27 faces the first wall 11 , and one end of the first conductive member 24 protrudes from the first end surface 27 and is electrically connected to the first conductive region 111 .
  • the second end surface 28 faces the second wall 12 , and one end of the second conductive member 25 protrudes from the second end surface 28 and is electrically connected to the second conductive region 121 .
  • the side of the first conductive region 111 facing the electrode assembly 20 is further provided with a first groove 113 , and one end of the first conductive member 24 protruding from the first end surface 27 is disposed in the first groove 113 , so as to facilitate the positioning and connection between the first conductive member 24 and the first conductive region 111 .
  • One end of the first conductive member 24 protruding from the first end surface 27 is further provided with a first protruding portion 241 , the first protruding portion 241 abuts the first end surface 27 , and the first protruding portion 241 It is also accommodated in the first groove 113 .
  • One end of the second conductive member 25 protruding from the second end surface 28 is provided with a second protruding portion 251 , and the second protruding portion 251 abuts the second end surface 28 .
  • a second groove 114 is further formed on the peripheral side of the first conductive area 111 , and a first protrusion 115 is formed on the first non-conductive area 112 , and the first protrusion 115 is disposed in the second groove 114 , it is beneficial to strengthen the connection between the first conductive region 111 and the first non-conductive region 112 and prevent the first conductive region 111 from being separated from the first non-conductive region 112 .
  • grooves may also be provided on the first non-conductive area 112, and protrusions may be provided on the first conductive area.
  • the structure of the second wall 12 is similar to that of the first wall 11 , the second conductive region 121 is provided with a third groove 123 on the side facing the electrode assembly 20 , and the second conductive member 25 protrudes from the second wall 12 .
  • One end of the end surface 28 is disposed in the third groove 123 , and the second protruding portion 251 is also received in the third groove 123 .
  • a fourth groove 124 is further formed on the peripheral side of the second conductive area 121 , and a second protrusion 125 is formed on the second non-conductive area 122 , and the second protrusion 125 is disposed in the fourth groove within 124.
  • the first conductive region 111 and the second conductive region 121 are made of metal material, and the first non-conductive region 112 , the second non-conductive region 122 and the sidewall 13 Made of plastic.
  • the first conductive area 111 and the first non-conductive area 112 are connected by injection molding.
  • the second conductive region 121 and the second non-conductive region 122 are also connected by injection molding. After the injection molding process is completed, the upper and lower layers of the connection between the metal material and the plastic material are coated with sealing materials such as hot melt adhesive to ensure the sealing of the connection.
  • the first conductive region 111 is connected to the first conductive member 24 by welding, and the second conductive region 121 is connected to the second conductive member 25 by welding.
  • Welding connection welding methods include but are not limited to laser welding.
  • the outer surface of the first conductive area 111 is also provided with a guide hole 14 for guiding the direction and position of the laser welding, reducing the penetration thickness of the external laser welding, and improving the welding tension.
  • the guide hole 14 is a blind hole arranged on the surface of the first conductive area 111 , the bottom of the guide hole 14 is a welding area, and the welding laser is injected from the open end of the guide hole 14 to connect the bottom of the guide hole 14 with the first conductive member. 24 Welding.
  • the thickness of the bottom of the guide hole 14 is relatively thin, so as to achieve the purpose of reducing the penetration thickness of the external laser welding. Since the guide hole 14 is a blind hole, the sealing performance of the first conductive region 111 will not be damaged.
  • the molten material can be filled into the guide hole 14 to seal the guide hole 14 .
  • the first conductive member 24 and the second conductive member 25 are stacked along the axial direction of the electrode assembly 20 .
  • the insulating member 26 is sandwiched between the first conductive member 24 and the second conductive member 25 .
  • the first pole piece 21, the isolation film 23 and the second pole piece 22 are wound around the first conductive member 24 and the second conductive member 25, and the winding starting end of the first pole piece 21 is electrically connected to the first conductive member 24, and the second The winding starting end of the pole piece 22 is electrically connected to the second conductive member 25 .
  • FIG. 3 please refer to FIG.
  • the first conductive member 24 and the second conductive member 25 may also be arranged side by side, and the first pole piece 21 , the isolation film 23 and the second pole piece 22 surround The first conductive member 24 and the second conductive member 25 are wound.
  • the insulating member 26 includes a first isolation part 261 , a second isolation part 262 and a third isolation part 263 which are integrally formed.
  • the first isolation portion 261 is disposed between the first conductive member 24 and the second conductive member 25 .
  • the second isolation portion 262 is disposed between the first conductive region 111 and the tail end of the second conductive member 25 , and the tail end of the second conductive member 25 is the end of the second conductive member 25 away from the second conductive region 121 . .
  • the third isolation portion 263 is disposed between the second conductive region 121 and the tail end of the first conductive member 24 , and the tail end of the first conductive member 24 is the end of the first conductive member 24 away from the first conductive region 111 . .
  • the casing 10 includes a first casing 101 and a second casing 102 .
  • the first casing 101 is generally a hollow structure with an opening at one end
  • the second casing 102 is generally cover-shaped
  • the second casing 102 It is arranged on the open end of the first casing 101 .
  • the first casing 101 and the second casing 102 are in a plane connection, and a sealing material can be provided at the connection between the two to prevent the electrolyte from infiltrating the connection between the first casing 101 and the second casing 102. out.
  • the first shell 101 and the second shell 102 can also be connected as a whole by means of gluing, heat sealing, welding, etc., so that the inner cavity of the first shell 101 and the second shell 102 are completely isolated from the outer surface. , to ensure the electrochemical stability of the inner cavity.
  • the first casing 101 and the second casing 102 are in an up-down connection structure.
  • the first casing 101 and the second casing 102 may also be in an up-down connection structure, and the present application is not limited to this.
  • first casing 101 and the second casing 102 are both hollow structures with an opening at one end, and the open end of the first casing 101 is connected to the second casing.
  • the open ends of 102 are snapped together, and the connection mode is plane connection.
  • the first casing 101 and the second casing 102 may be distributed left and right or up and down, and the present application is not limited thereto.
  • the first casing 101 is a cover-shaped structure
  • the second casing 102 is a hollow structure with an opening at one end
  • the opening end of the second casing 102 is provided with a first An installation slot 103
  • the first installation slot 103 is located on the inner side wall of the second housing 102 .
  • a side of the first casing 101 facing the second casing 102 abuts against the stepped surface 1031 of the first installation groove 103 , and the side of the first casing 101 is fixed to the first installation groove 103 to close the second casing 102 .
  • a side of the open end of the second casing 102 is provided with a second installation groove 104 , and the second installation groove 104 is located on the outer side wall of the second casing 102 .
  • One side of the first housing 101 is provided with a connecting portion 105 , the connecting portion 105 is matched with the second mounting groove 104 , and the connecting portion 105 is disposed in the second mounting groove 104 .
  • connection modes with the second casing 102 are diversified to improve the sealing performance of the casing 10 .
  • the cross-sectional shape of the housing 10 is approximately a rectangle.
  • the cross-sectional shape of the housing 10 also includes but is not limited to circular, polygonal, triangular, and irregular shapes. etc., can be designed according to actual product requirements.
  • the materials of the first casing 101 and the second casing 102 include, but are not limited to, liquid crystal polymer, resin, polyvinyl fluoride, polyimide, polycarbonate and other rigid plastics that are resistant to electrolytes.
  • the length and width of the first casing 101 and/or the second casing 102 range from 5 to 100 mm, the height from 1 to 10 mm, and the wall thickness from 1 to 10 mm. It is 0.05-5mm to adapt to electrode assemblies 20 of different sizes and specifications.
  • an embodiment of the present application further provides an electronic device 200 , the electronic device 200 includes a circuit element 201 and the battery 100 in any of the above embodiments, and the circuit element 201 is electrically connected to the battery 100 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请提供了一种电池，包括壳体和设置于所述壳体内的电极组件，所述电极组件包括第一极片、第二极片和隔离膜，所述隔离膜设置于所述第一极片和所述第二极片之间，所述电极组件由所述第一极片、隔离膜和第二极片卷绕形成。所述壳体包括第一壁，所述第一壁包括第一导电区域和与所述第一导电区域连接的第一非导电区域。所述电极组件还包括第一导电件，所述第一导电件电连接所述第一极片和第一导电区域，使得壳体只有导电区域具有极性，其他区域不具有极性，从而取消在电池外部包裹绝缘胶的工艺过程，降低工艺成本，减少能量密度损失。另外由于设置第一导电区域，对于第一极性，不需要设置极柱导出极性。本申请还提供一种具有上述电池的电子装置。

Description

电池及电子装置 技术领域
本申请涉及电池领域，尤其涉及一种电池和具有该电池的电子装置。
背景技术
现有电池的壳体通常为金属外壳，金属外壳与壳体内部的电芯连接后，会使得金属外壳的全部区域都带有极性，从而使电池在安装使用过程中，电池的非连接区域需要包裹绝缘胶，造成工艺成本升高，并且电池的能量密度损失也会增大。另外对于金属外壳电池的电极导出有两种方式：一种是在壳体上设置极柱，极柱会占用电池的厚度从而会使得电池能量密度降低；另一种是使两个壳体之间绝缘；两个壳体分别为不同极性，但是该绝缘结构使得两壳体壁重叠，从而也对能量密度有不利影响。
发明内容
鉴于上述状况，本申请提供一种电池和具有该电池的电子装置装置，通过在壳体上设置第一导电区域和第一非导电区域，并利用第一导电件连接第一导电区域和电极组件的第一极片，使得壳体只有导电区域具有极性，其他区域不具有极性，从而取消在电池外部包裹绝缘胶的工艺过程，降低工艺成本，减少能量密度损失。
本申请的实施例提供一种电池，包括壳体和设置于所述壳体内的电极组件，所述电极组件包括第一极片、第二极片和隔离膜，所述隔离膜设置于所述第一极片和所述第二极片之间，所述电极组件由所述第一极片、隔离膜和第二极片卷绕形成。所述壳体包括第一 壁，所述第一壁包括第一导电区域和与所述第一导电区域连接的第一非导电区域。所述电极组件还包括第一导电件，所述第一导电件电连接所述第一极片和所述第一导电区域。
进一步地，所述壳体还包括与所述第一壁相对设置的第二壁，以及位于所述第一壁和所述第二壁之间的侧壁。所述第二壁包括第二导电区域和与所述第二导电区域连接的第二非导电区域。所述电极组件还包括第二导电件，所述第二导电件与所述第二极片及第二导电区域电连接，所述第一导电件和所述第二导电件之间设置绝缘件。
在一可选实施例中，所述第一导电区域朝向所述电极组件的一侧设有第一凹槽，所述第一导电件的一端设置于所述第一凹槽内。
进一步地，所述第一导电区域与所述第一导电件焊接连接。
在一可选实施例中，所述第一导电区域的周侧设有第二凹槽，所述第一非导电区域设有第一凸起，所述第一凸起设置于所述第二凹槽内。
在一可选实施例中，所述电极组件包括第一端面，所述第一端面朝向所述第一壁，所述第一导电件的一端伸出所述第一端面并与所述第一导电区域电连接。
进一步地，所述第一导电件的一端设有第一凸出部，所述第一凸出部抵持所述第一端面。
在一可选实施例中，所述电极组件包括与所述第一端面相对设置的第二端面，所述第二端面朝向所述第二壁，所述第二导电件的一端伸出所述第二端面并与所述第二导电区域电连接。
进一步地，所述第二导电件的一端设有第二凸出部，所述第二凸出部抵持所述第二端面。
在一可选实施例中，所述第一导电件与所述第二导电件并列设置，所述第一极片、隔离膜和第二极片围绕所述第一导电件和第二 导电件卷绕。
在一可选实施例中，所述第一导电件与所述第二导电件沿所述电极组件的轴向方向堆叠设置。
在一可选实施例中，所述第一导电区域为金属材质，所述第一非导电区域为塑料材质。
在一可选实施例中，所述第一导电区域与所述第一非导电区域通过注塑方式连接。
一种电子装置，包括电路元件和上述任意一项所述的电池，所述电路元件电连接所述电池。
上述电池通过在壳体上设置第一导电区域和第一非导电区域，并利用第一导电件连接第一导电区域和电极组件的第一极片，使得壳体只有导电区域具有极性，其他区域不具有极性，从而取消在电池外部包裹绝缘胶的工艺过程，降低工艺成本，减少能量密度损失。另外由于设置第一导电区域，对于第一极性，不需要设置极柱导出极性。
附图说明
图1为电池在一实施例中的俯视结构示意图。
图2为图1所示电池的侧面结构示意图。
图3为图1所示电池沿A-A方向的剖面结构示意图。
图4为电池在一实施例中的剖面结构示意图。
图5为壳体在一实施例中的剖面结构示意图。
图6为壳体在一实施例中剖面结构示意图。
图7为壳体在一实施例中剖面结构示意图。
图8为壳体在一实施例中剖面结构示意图。
图9为壳体在一实施例中剖面结构示意图。
图10为壳体在一实施例中剖面结构示意图。
图11为壳体在其他实施例中的结构示意图。
图12为电子装置在一实施例中的结构框图。
主要元件符号说明：
电池                      100
壳体                      10
第一壁                    11
第一导电区域              111
第一非导电区域            112
第一凹槽                  113
第二凹槽                  114
第一凸起                  115
第二壁                    12
第二导电区域              121
第二非导电区域            122
第三凹槽                  123
第四凹槽                  124
第二凸起                  125
侧壁                      13
导向孔                    14
第一壳体                  101
第二壳体                  102
第一安装槽                103
台阶面                    1031
第二安装槽                104
台阶面                    1041
连接部                    105
电极组件                  20
第一极片                  21
第二极片                  22
隔离膜                    23
第一导电件                24
第一凸出部                241
第二导电件                25
第二凸出部                251
绝缘件                    26
第一隔离部                261
第二隔离部                262
第三隔离部                263
第一端面                  27
第二端面                  28
电子装置                  200
电路元件                  201
具体实施方式：
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。当一个元件被认为是“设置于”另一个元件，它可以是直接设置在另一个元件上或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表 述只是为了说明的目的。
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“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
本申请实施例提供了一种电池，包括壳体和设置于所述壳体内的电极组件，所述电极组件包括第一极片、第二极片和隔离膜，所述隔离膜设置于所述第一极片和所述第二极片之间，所述电极组件由所述第一极片、隔离膜和第二极片卷绕形成。所述壳体包括第一壁，所述第一壁包括第一导电区域和与所述第一导电区域连接的第一非导电区域。所述电极组件还包括第一导电件，所述第一导电件和所述第一极片电连接。所述第一导电件电连接所述第一导电区域。
上述电池通过在壳体上设置第一导电区域和第一非导电区域，并利用第一导电件连接第一导电区域和电极组件的第一极片，使得壳体只有导电区域具有极性，其他区域不具有极性，从而取消在电池外部包裹绝缘胶的工艺过程，降低工艺成本，减少能量密度损失。
本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施方式及实施方式中的特征可以相互组合。
请参阅图1、图2和图3，在一实施例中，电池100包括壳体10和设置于所述壳体10内的电极组件20。所述电极组件20包括第一极片21、第二极片22和隔离膜23，所述隔离膜23设置于所述第一极片21和所述第二极片22之间。所述电极组件20由所述第一极片21、隔离膜23和第二极片22卷绕形成。所述壳体10包括第一壁11，所述第一壁11包括第一导电区域111和与所述第一导电区域111连接的第一非导电区域112。所述电极组件20还包括第一导电件24，所述第一导电件24和所述第一极片21电连接。所述第一 导电件24电连接所述第一导电区域111，从而使所述第一导电区域111电连接所述第一极片21。
请继续参阅图3，所述壳体10还包括与所述第一壁11相对设置的第二壁12，以及位于所述第一壁11和所述第二壁12之间的侧壁13。所述第二壁12包括第二导电区域121和与所述第二导电区域121连接的第二非导电区域122。所述电极组件20还包括第二导电件25，所述第二导电件25与所述第二极片22及第二导电区域121电连接。所述第一导电件24和所述第二导电件25之间设置绝缘件26，以防止电池100内部发生短路。当然在其他实施例中，第二壁12也可为金属壳体，电极组件20不包含第二导电件25，可使第二极片22的极耳电连接到第二壁12。所述电极组件20包括第一端面27和与所述第一端面27相对设置的第二端面28。所述第一端面27朝向所述第一壁11，所述第一导电件24的一端伸出所述第一端面27并与所述第一导电区域111电连接。所述第二端面28朝向所述第二壁12，所述第二导电件25的一端伸出所述第二端面28并与所述第二导电区域121电连接。所述第一导电区域111朝向所述电极组件20的一侧还设有第一凹槽113，所述第一导电件24伸出第一端面27的一端设置于所述第一凹槽113内，以方便第一导电件24与第一导电区域111之间的定位与连接。所述第一导电件24伸出第一端面27的一端还设有第一凸出部241，所述第一凸出部241抵持所述第一端面27，所述第一凸出部241也收容于第一凹槽113内。所述第二导电件25伸出第二端面28的一端设有第二凸出部251，所述第二凸出部251抵持所述第二端面28。
所述第一导电区域111的周侧还设有第二凹槽114，所述第一非导电区域112设有第一凸起115，所述第一凸起115设置于所述第二凹槽114内，有利于加强第一导电区域111与第一非导电区域112之间的连接，防止第一导电区域111从第一非导电区域112脱 离。当然也可以在第一非导电区域112上设置凹槽，在第一导电区域设置凸起。所述第二壁12的结构与第一壁11类似，所述第二导电区域121朝向所述电极组件20的一侧设有第三凹槽123，所述第二导电件25伸出第二端面28的一端设置于所述第三凹槽123内，所述第二凸出部251也收容于所述第三凹槽123内。所述第二导电区域121的周侧还设有第四凹槽124，所述第二非导电区域122设有第二凸起125，所述第二凸起125设置于所述第四凹槽124内。
在本申请的实施例中，所述第一导电区域111和所述第二导电区域121为金属材质，所述第一非导电区域112、所述第二非导电区域122和所述侧壁13为塑料材质。所述第一导电区域111与所述第一非导电区域112通过注塑方式连接。所述第二导电区域121与所述第二非导电区域122也通过注塑方式连接。注塑过程完成后，金属材质与塑料材质的连接处上下表层涂覆热熔胶等密封材料，以保证连接处的密封性。
请再次参阅图1和图3，在本申请的实施例中，所述第一导电区域111与所述第一导电件24焊接连接，所述第二导电区域121与所述第二导电件25焊接连接，焊接方式包括但不限于激光焊接。所述第一导电区域111的外表面还设有导向孔14，用于导向激光焊接方向和位置，减少外部激光焊接穿透厚度，提高焊接拉力。所述导向孔14为设置在第一导电区域111表面的盲孔，导向孔14的底部为焊接区域，焊接激光从导向孔14的开口端射入，将导向孔14的底部与第一导电件24焊接。相比于直接焊接第一导电区域111和第一导电件24，导向孔14底部的厚度相对较薄，从而达到减少外部激光焊接穿透厚度的目的。由于导向孔14为盲孔，不会破坏第一导电区域111的密封性能，激光焊接过程中，熔融材料可以填充至导向孔14内，从而密封导向孔14。
在图3所示的实施例中，第一导电件24与第二导电件25沿电 极组件20的轴向方向堆叠设置，以图3的视角，第一导电件24和第二导电件25呈上下堆叠设置，绝缘件26夹设于第一导电件24与第二导电件25之间。第一极片21、隔离膜23和第二极片22围绕第一导电件24和第二导电件25卷绕，第一极片21的卷绕起始端电连接第一导电件24，第二极片22的卷绕起始端电连接第二导电件25。在其他实施例中，请参阅图4，所述第一导电件24与所述第二导电件25还可以左右并列设置，所述第一极片21、隔离膜23和第二极片22围绕所述第一导电件24和第二导电件25卷绕。绝缘件26包括一体成型的第一隔离部261、第二隔离部262和第三隔离部263。所述第一隔离部261设置于第一导电件24与第二导电件25之间。所述第二隔离部262设置于第一导电区域111与第二导电件25的尾端之间，所述第二导电件25的尾端为第二导电件25背离第二导电区域121的一端。所述第三隔离部263设置于第二导电区域121与第一导电件24的尾端之间，所述第一导电件24的尾端为第一导电件24背离第一导电区域111的一端。
请参阅图5，壳体10包括第一壳体101和第二壳体102，第一壳体101大致为一端具有开口的中空结构，第二壳体102大致呈盖状，第二壳体102设置于第一壳体101的开口端。所述第一壳体101与所述第二壳体102之间呈平面连接，两者连接处可以设置密封材料，以防止电解液从第一壳体101与第二壳体102的连接处渗出。第一壳体101与第二壳体102之间还可以通过胶粘、热封、焊接等方式连接为一个整体，使第一壳体101和第二壳体102的内腔与外表面完全隔绝，保证内腔的电化学稳定性。在图5所示的实施例中，所述第一壳体101与所述第二壳体102呈上下连接结构。请参阅图9，所述第一壳体101与所述第二壳体102还可以呈上下连接结构，本申请不限定于此。
请参阅图6和图10，在另一实施例中，第一壳体101和第二壳 体102均为一端具有开口的中空结构，第一壳体101的开口端与所述第二壳体102的开口端扣合，连接方式为平面连接。所述第一壳体101与所述第二壳体102可以呈左右分布或者是上下分布，本申请不限定于此。
请参阅图7，在一可选实施例中，第一壳体101为盖状结构，第二壳体102为一端具有开口的中空结构，所述第二壳体102的开口端设有第一安装槽103，所述第一安装槽103位于所述第二壳体102的内侧壁。所述第一壳体101朝向所述第二壳体102的一侧面抵持所述第一安装槽103的台阶面1031，所述第一壳体101的侧边固定于所述第一安装槽103内，以闭合所述第二壳体102。
请参阅图8，在一可选实施例中，所述第二壳体102开口端的一侧设有第二安装槽104，所述第二安装槽104位于所述第二壳体102的外侧壁。所述第一壳体101的一侧设有连接部105，所述连接部105与所述第二安装槽104匹配，并且所述连接部105设置于所述第二安装槽104内。所述连接部105的端部抵持所述第二安装槽104的台阶面1041，所述第二壳体102开口端的另一侧与第一壳体101平面连接，从而使第一壳体101与第二壳体102之间的连接方式多样化，提高壳体10的密封性能。
请参阅图11，在本申请的实施例中，壳体10的截面形状大致为长方形，在其他实施例中，壳体10的截面形状还包括但不限于圆形、多边形、三角形、不规则形状等，可以根据实际产品需求进行设计。第一壳体101和第二壳体102的材质包括但不限于液晶高分子聚合物、树脂、聚氟乙烯、聚亚酰胺、聚碳酸酯等耐电解液的硬性塑料。壳体10大致呈长方体时，第一壳体101和/或第二壳体102的长度及宽度的取值范围为5-100mm，高度的取值范围为1-10mm，壁厚的取值范围为0.05-5mm，以适应不同尺寸、规格的电极组件20。
请参阅图12，本申请的其中一个实施例还提供一种电子装置200，所述电子装置200包括电路元件201和上述任意实施例中的电池100，所述电路元件201电连接所述电池100。
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 (14)

  1. 一种电池，包括：
    壳体；和
    电极组件，设置于所述壳体内，所述电极组件包括第一极片、第二极片和隔离膜，所述隔离膜设置于所述第一极片和所述第二极片之间，所述电极组件由所述第一极片、隔离膜和第二极片卷绕形成；
    其特征在于，所述壳体包括第一壁，所述第一壁包括第一导电区域和与所述第一导电区域连接的第一非导电区域；
    所述电极组件还包括第一导电件，所述第一导电件电连接所述第一极片电连接和所述第一导电区域。
  2. 如权利要求1所述的电池，其特征在于，所述壳体还包括与所述第一壁相对设置的第二壁，以及位于所述第一壁和所述第二壁之间的侧壁；
    所述第二壁包括第二导电区域和与所述第二导电区域连接的第二非导电区域；
    所述电极组件还包括第二导电件，所述第二导电件与所述第二极片及第二导电区域电连接，所述第一导电件和所述第二导电件之间设置绝缘件。
  3. 如权利要求1所述的电池，其特征在于，所述第一导电区域朝向所述电极组件的一侧设有第一凹槽，所述第一导电件的一端设置于所述第一凹槽内。
  4. 如权利要求3所述的电池，其特征在于，所述第一导电区域与所述第一导电件焊接连接。
  5. 如权利要求1所述的电池，其特征在于，所述第一导电区域的周侧设有第二凹槽，所述第一非导电区域设有第一凸起，所述第一凸起设置于所述第二凹槽内。
  6. 如权利要求2所述的电池，其特征在于，所述电极组件包括第一端面，所述第一端面朝向所述第一壁，所述第一导电件的一端伸出所述第一端面并与所述第一导电区域电连接。
  7. 如权利要求6所述的电池，其特征在于，所述第一导电件的一端设有第一凸出部，所述第一凸出部抵持所述第一端面。
  8. 如权利要求6所述的电池，其特征在于，所述电极组件包括与所述第一端面相对设置的第二端面，所述第二端面朝向所述第二壁，所述第二导电件的一端伸出所述第二端面并与所述第二导电区域电连接。
  9. 如权利要求8所述的电池，其特征在于，所述第二导电件的一端设有第二凸出部，所述第二凸出部抵持所述第二端面。
  10. 如权利要求2所述的电池，其特征在于，所述第一导电件与所述第二导电件并列设置，所述第一极片、隔离膜和第二极片围绕所述第一导电件和第二导电件卷绕。
  11. 如权利要求2所述的电池，其特征在于，所述第一导电件与所述第二导电件沿所述电极组件的轴向方向堆叠设置。
  12. 如权利要求1所述的电池，其特征在于，所述第一导电区域为金属材质，所述第一非导电区域为塑料材质。
  13. 如权利要求1所述的电池，其特征在于，所述第一导电区域与所述第一非导电区域通过注塑方式连接。
  14. 一种电子装置，其特征在于，包括电路元件和权利要求1-13任意一项所述的电池，所述电路元件电连接所述电池。
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