WO2022061610A1 - 电池及具有所述电池的电子装置 - Google Patents

电池及具有所述电池的电子装置 Download PDF

Info

Publication number
WO2022061610A1
WO2022061610A1 PCT/CN2020/117216 CN2020117216W WO2022061610A1 WO 2022061610 A1 WO2022061610 A1 WO 2022061610A1 CN 2020117216 W CN2020117216 W CN 2020117216W WO 2022061610 A1 WO2022061610 A1 WO 2022061610A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole piece
casing
winding
empty foil
foil area
Prior art date
Application number
PCT/CN2020/117216
Other languages
English (en)
French (fr)
Inventor
曾巧
闫东阳
谢再斌
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 PCT/CN2020/117216 priority Critical patent/WO2022061610A1/zh
Priority to KR1020237004351A priority patent/KR20230026521A/ko
Priority to CN202080013359.6A priority patent/CN113474941A/zh
Priority to EP20954464.2A priority patent/EP4203137A1/en
Publication of WO2022061610A1 publication Critical patent/WO2022061610A1/zh
Priority to US18/187,949 priority patent/US20230231205A1/en

Links

Images

Classifications

    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
    • 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
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application relates to the field of electrochemistry, in particular to batteries and electronic devices having the batteries.
  • Lithium-ion batteries are widely used in various electronic devices due to their advantages of high energy density, long cycle life, and environmental friendliness.
  • batteries used as power sources for electronic devices At present, the winding core in a general battery needs to be connected to the casing by means of tabs.
  • the tab since the tab itself has a certain thickness, it leads to a great waste of the internal space of the battery, thereby affecting the energy density of the entire battery.
  • the present application also provides an electronic device having the battery.
  • a battery includes an electrode assembly and a casing assembly.
  • the housing assembly defines an accommodating space for accommodating the electrode assembly.
  • the material of the housing component is a conductive material.
  • the housing assembly includes a first housing and a second housing connected to the first housing.
  • the first casing and the second casing are electrically insulated.
  • the electrode assembly includes a first pole piece, a second pole piece, and a diaphragm between the first pole piece and the second pole piece.
  • the electrode assembly is formed by winding the first pole piece, the second pole piece and the separator.
  • the first pole piece includes a first current collector and a first active material layer disposed on the first current collector.
  • the second pole piece includes a second current collector and a second active material layer disposed on the second current collector.
  • the first current collector includes a first empty foil region.
  • the first empty foil area is located at the edge area of the first current collector, and the first empty foil area is directed from the winding start end of the first pole piece to the winding end of the first pole piece extend.
  • the first empty foil region is electrically connected to one of the first casing and the second casing.
  • the second current collector includes a second empty foil region.
  • the second empty foil area is located at the winding start end of the second pole piece or/and the winding end of the second pole piece.
  • the second empty foil area is electrically connected to the other of the first casing and the second casing.
  • the electrode assembly further comprises a winding needle, and the first pole piece, the separator and the second pole piece are wound around the winding needle as a central axis to form the electrode assembly,
  • the second empty foil area is located at the winding start end of the second pole piece, the second empty foil area is electrically connected to the winding needle, and the winding needle is electrically connected to the first shell or the first shell. Two shells.
  • the electrode assembly further comprises a winding needle, and the first pole piece, the separator and the second pole piece are wound around the winding needle as a central axis to form the electrode assembly,
  • the second empty foil area is located at the winding start end of the second pole piece and the winding end of the second pole piece, and the second empty foil area at the winding start end of the second pole piece is electrically
  • the winding pin is connected, the winding pin is electrically connected to the second shell, and the second empty foil area located at the winding end of the second pole piece is electrically connected to the second shell.
  • the electrode assembly further comprises a winding needle, and the first pole piece, the separator and the second pole piece are wound around the winding needle as a central axis to form the electrode assembly,
  • the second empty foil area is located at the winding end of the second pole piece.
  • the first empty foil regions are respectively located at the edge regions on opposite sides of the first current collector.
  • the first active material layer is not provided on at least one side of the first empty foil region, and the second active material layer is not provided on at least one side of the second empty foil region.
  • the battery further includes a first insulating member, and the first insulating member connects the winding needle and the first casing, so that the winding needle and the first casing are connected between the winding needle and the first casing. Electrical insulation.
  • the rolling needle is integrally formed or formed by splicing.
  • the battery further includes a second insulating member, and the second insulating member connects the first casing and the second casing, so that the first casing and the The second shells are electrically insulated.
  • An electronic device comprising the battery described in any one of the above.
  • the first pole piece and the second pole piece in the battery in the present application are electrically connected to the first case and the second case through the arrangement of the first empty foil area and the second empty foil area, respectively.
  • the design of the battery in the present application effectively avoids the problem of wasting the internal space of the battery caused by the use of the electrode tab as the transition structure between the electrode assembly and the casing in the existing battery.
  • the space utilization of the battery can effectively improve the energy density and fast charging performance of the battery.
  • FIG. 1 is a schematic structural diagram of a battery according to an embodiment of the present application.
  • FIG. 2A is an exploded schematic view of the battery shown in FIG. 1 .
  • FIG. 2B is a schematic cross-sectional view of the battery shown in FIG. 1 .
  • FIG. 3 is a schematic cross-sectional view of the housing assembly and the second insulating member shown in FIG. 1 .
  • FIG. 4 is a schematic cross-sectional view of an electrode assembly according to an embodiment of the present application.
  • 5A is a schematic cross-sectional view of a first pole piece according to an embodiment of the present application.
  • 5B is a schematic cross-sectional view of a second pole piece according to another embodiment of the present application.
  • FIG. 6A is a schematic expanded view of a first pole piece according to an embodiment of the present application.
  • FIG. 6B is a schematic expanded view of the first pole piece according to another embodiment of the present application.
  • FIG. 6C is a schematic expanded view of the first pole piece according to still another embodiment of the present application.
  • FIG. 7A is a schematic cross-sectional view of a second pole piece according to an embodiment of the present application.
  • FIG. 7B is a schematic cross-sectional view of a second pole piece according to another embodiment of the present application.
  • FIG. 7C is a schematic cross-sectional view of a second pole piece according to another embodiment of the present application.
  • FIG. 7D is a schematic cross-sectional view of a second pole piece according to still another embodiment of the present application.
  • FIG. 8A is a schematic expanded view of a second pole piece according to an embodiment of the present application.
  • FIG. 8B is an expanded schematic diagram of a second pole piece according to another embodiment of the present application.
  • FIG. 8C is a schematic expanded view of the second pole piece according to still another embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a battery according to another embodiment of the present application.
  • FIG. 10A is an exploded schematic view of the battery shown in FIG. 9 .
  • FIG. 10B is a schematic cross-sectional view of the battery shown in FIG. 9 .
  • FIG. 11 is a schematic block diagram of an electronic device according to an embodiment of the present application.
  • the first collector 1111 The first collector 1111
  • the first active material layer 1112 is the first active material layer 1112
  • an embodiment of the present application provides a battery 10 .
  • the battery 10 includes an electrode assembly 11 and a housing assembly 12 .
  • the housing assembly 12 defines an accommodating space 13 for accommodating the electrode assembly 11 .
  • the material of the housing component 12 is a conductive material.
  • the casing assembly 12 includes a first casing 121 and a second casing 122 connected to the first casing 121 .
  • the first casing 121 and the second casing 122 are electrically insulated.
  • the electrode assembly 11 includes a first pole piece 111 , a second pole piece 112 , and a diaphragm 113 between the first pole piece 111 and the second pole piece 112 .
  • the electrode assembly 11 is formed by winding the first pole piece 111 , the second pole piece 112 and the separator 113 .
  • the first pole piece 111 includes a first current collector 1111 and a first active material layer 1112 disposed on the first current collector 1111 .
  • the first current collector 1111 includes a first empty foil region 1113.
  • the first empty foil region 1113 is located at the edge region of the first current collector 1111 , and the first empty foil region 1113 is directed from the winding start end of the first pole piece 111 to the first pole piece 111 extends in the direction of the winding end.
  • the first empty foil area 1113 is electrically connected to the first casing 121 .
  • the second pole piece 112 includes a second current collector 1121 and a second active material layer 1122 disposed on the second current collector 1121 .
  • the second current collector 1121 includes a second empty foil region 1123 .
  • the second empty foil area 1123 is located at the winding start end of the second pole piece 112 or/and the winding end of the second pole piece 112 .
  • the second empty foil region 1123 is electrically connected to the second casing 122 .
  • the first pole piece 111 and the second pole piece 112 in the battery 10 in the present application are connected to the first case 121 and the second case 122 through the first empty foil area 1113 and the second empty foil area 1123 respectively.
  • the design of the battery 10 in the present application effectively avoids the problem of wasting the internal space of the battery caused by the existing battery using the tab as the transition structure between the electrode assembly and the casing. In this way, the space utilization rate of the battery 10 is greatly improved, thereby effectively improving the energy density and fast charging performance of the battery 10 .
  • the conductive material is not limited to one or more of steel alloy, aluminum alloy, iron alloy, copper alloy, nickel alloy and stainless steel.
  • the first empty foil area 1113 can be electrically connected to the second casing 122 , and at this time, the second empty foil area 1123 is electrically connected to the first casing 121 .
  • the first active material layer 1112 is not provided on at least one side of the first empty foil region 1113 .
  • the second active material layer 1122 is not provided on at least one side of the second empty foil region 1123 .
  • the electrode assembly 11 further includes a winding needle 114 .
  • the first pole piece 111 , the separator 113 and the second pole piece 112 are wound around the winding needle 114 as the central axis to form the electrode assembly 11 .
  • the second empty foil region 1123 is located at the winding start end of the second pole piece 112 .
  • the second empty foil area 1123 is electrically connected to the rolling pin 114 .
  • the rolling pin 114 is electrically connected to the second housing 122 .
  • the first pole piece 111 in the battery 10 is directly connected to the first casing 121 through the first empty foil area 1113, thus eliminating the need for the transfer structure in the existing battery.
  • the use of tabs increases the energy density of the battery 10 .
  • the second pole piece 112 in the battery 10 is electrically connected to the rolling pin 114 in the middle of the electrode assembly 11 through the second empty foil area 1123, so that the empty space in the middle of the electrode assembly 11 is effectively utilized, and the peripheral space of the electrode assembly 11 is avoided.
  • the energy density of the battery 10 is improved.
  • the second empty foil region 1123 is located at the winding start end of the second pole piece 112 and the winding end of the second pole piece 112 .
  • the second empty foil area 1123 located at the winding start end of the second pole piece 112 is electrically connected to the winding needle 114 .
  • the winding needle 114 is electrically connected to the second casing 122
  • the second empty foil area 1123 located at the winding end of the second pole piece 112 is electrically connected to the second casing 122 .
  • the battery 10 in this embodiment is electrically connected to the second casing 122 through the winding needle 114 and the second empty foil area 1123 located at the winding end of the second pole piece 112, respectively. The fast charging performance of the battery 10 is greatly improved.
  • the second empty foil region 1123 is located at the winding end of the second pole piece 112 .
  • the winding pin 114 is not electrically connected with the housing assembly 12 . That is, the winding needle 114 is only used to assist in completing the winding of the electrode assembly 11 .
  • the battery 10 further includes a first insulator 14 .
  • the first insulating member 14 connects the rolling pin 114 and the first casing 121 to electrically insulate the rolling pin 114 and the first casing 121 . It can be understood that, in other embodiments, when the first empty foil area 1113 is electrically connected to the second casing 122, the rolling pin 114 is electrically connected to the first casing 121, and at this time, the first An insulating member 14 connects the rolling pin 114 and the second housing 122 to electrically insulate the rolling pin 114 and the second housing 122 .
  • the battery 10 further includes a second insulating member 15 .
  • the second insulating member 15 connects the first casing 121 and the second casing 122 to electrically insulate the first casing 121 and the second casing 122 .
  • the rolling pin 114 is integrally formed or formed by splicing.
  • the embodiment of the present application further provides an electronic device 1 .
  • the electronic device 1 includes the battery 10 .
  • the electronic device 1 may be a mobile electronic device, an energy storage device, an electric vehicle, a hybrid electric vehicle, or the like.
  • the mobile electronic device may be a mobile phone, a wearable electronic device, a tablet computer, a notebook computer, and the like.
  • a battery 10 includes an electrode assembly 11 , a housing assembly 12 , a first insulating member 14 and a second insulating member 15 .
  • the housing assembly 12 defines an accommodating space 13 for accommodating the electrode assembly 11 .
  • the material of the housing component 12 is a conductive material.
  • the casing assembly 12 includes a first casing 121 and a second casing 122 connected to the first casing 121 .
  • the conductive material is not limited to one or more of steel alloy, aluminum alloy, iron alloy, copper alloy, nickel alloy and stainless steel.
  • the second casing 122 includes a bottom plate 1221 and a side plate 1222 .
  • the side plate 1222 is disposed around the periphery of the bottom plate 1221 to form a first accommodating space 1223 together with the side plate 1222 .
  • the side plate 1222 includes a first surface 1224 facing away from the bottom plate 1221 .
  • the bottom plate 1221 is circular.
  • the shape of the bottom plate 1221 may also be a regular shape such as a square or other irregular shapes, which are not limited herein.
  • the second housing 122 further includes a first protruding portion 1225 .
  • the first protruding portion 1225 protrudes from the first surface 1224 and forms a receiving groove 1226 together with the first surface 1224 .
  • the second shell 122 can be integrally formed.
  • the bottom plate 1221 , the side plate 1222 and the first protruding portion 1225 can also be connected as a whole by welding.
  • the first housing 121 includes a top plate 1211 and a second protruding portion 1212 .
  • the second protruding portion 1212 is protruded from the periphery of the top plate 1211 to form a second accommodating space 1213 together with the top plate 1211 .
  • the first protruding portion 1225 is simultaneously accommodated in the second accommodating space 1213, so as to realize the first The connection between the casing 121 and the second casing 122 .
  • the first accommodating space 1223 and the second accommodating space 1213 communicate with each other to form the accommodating space 13 for accommodating the electrode assembly 11 together.
  • first casing 121 may be integrally formed.
  • the top plate 1211 and the second protruding portion 1212 can also be connected into one body by welding.
  • the second insulating member 15 is connected between the first casing 121 and the second casing 122 , so that the space between the first casing 121 and the second casing 122 is Electrical insulation.
  • the second insulating member 15 includes a first subsection 151 and a second subsection 152 .
  • the first sub-section 151 is disposed in the receiving groove 1226 .
  • the second subsection 152 is connected to the first subsection 151 and is disposed on the surface of the first protruding portion 1225 facing away from the first surface 1224 .
  • the first casing 121 and the second casing 122 are spaced apart due to the arrangement of the second insulating member 15 . , so that electrical insulation is achieved between the first casing 121 and the second casing 122 .
  • the electrode assembly 11 includes a first pole piece 111, a second pole piece 112, a diaphragm 113 between the first pole piece 111 and the second pole piece 112, and Rolling needle 114.
  • the first pole piece 111 , the separator 113 and the second pole piece 112 are wound around the winding needle 114 as the central axis to form the electrode assembly 11 .
  • the first pole piece 111 includes a first current collector 1111 and a second active material layer 1122 disposed on the first current collector 1111 .
  • the first current collector 1111 includes a first edge region 1114 opposite to the top plate 1211 .
  • the first current collector 1111 includes a first empty foil region 1113 .
  • the first empty foil region 1113 is located in the first edge region 1114 , and the first empty foil region 1113 is wound from the winding start end of the first pole piece 111 toward the first pole piece 111 . end direction extension.
  • the first empty foil area 1113 is electrically connected to the first casing 121 .
  • the first active material layer 1112 is not provided on both sides of the first empty foil region 1113 . In other embodiments, referring to FIG. 5B , one side of the first empty foil region 1113 is not provided with the first active material layer 1112 .
  • the second pole piece 112 includes a second current collector 1121 and a second active material layer 1122 disposed on the second current collector 1121 .
  • the second current collector 1121 includes a second empty foil region 1123 .
  • the second empty foil area 1123 is located at the winding start end of the second pole piece 112 and the winding end of the second pole piece 112 .
  • the second empty foil area 1123 located at the winding start end of the second pole piece 112 is electrically connected to the winding needle 114 .
  • the rolling pin 114 is electrically connected to the bottom plate 1221 of the second casing 122 .
  • the second empty foil area 1123 located at the winding end of the second pole piece 112 is electrically connected to the side plate 1222 of the second casing 122 .
  • the second active material layer 1122 is not provided on both sides of the second empty foil region 1123 .
  • the second active material layer 1122 is not provided on one side of the second empty foil region 1123 at the starting end of the winding of the second pole piece 112 .
  • the second active material layer 1122 is not provided on both sides of the second empty foil region 1123 at the winding end of the second pole piece 112 .
  • the second active material layer 1122 is not provided on both sides of the second empty foil region 1123 at the starting end of the winding of the second pole piece 112 .
  • the second active material layer 1122 is not provided on one side of the second empty foil region 1123 located at the winding end of the second pole piece 112 .
  • the first insulating member 14 is connected between the top plate 1211 and the rolling pin 114 , so as to electrically insulate the first housing 121 and the rolling pin 114 .
  • Embodiment 2 lies in the location where the second empty foil area 1123 is arranged.
  • the second empty foil region 1123 is only located at the winding start end of the second pole piece 112 .
  • the second empty foil area 1123 is electrically connected to the rolling pin 114 .
  • the second empty foil area 1123 is electrically connected to the bottom plate 1221 of the second casing 122 via the rolling pin 114 .
  • Embodiment 3 lies in the positions where the first empty foil area 1113 , the rolling pin 114 and the first insulating member 14 are arranged.
  • the first current collector 1111 further includes a second edge region 1115 opposite to the bottom plate 1221 .
  • the first empty foil area 1113 is located in the second edge area 1115 , and the first empty foil area 1113 is directed from the winding start end of the first pole piece 111 toward the first The winding end direction of the pole piece 111 extends.
  • the first empty foil area 1113 is electrically connected to the bottom plate 1221 of the second casing 122 .
  • the rolling pin 114 is electrically connected to the top plate 1211 of the first housing 121 .
  • the first insulating member 14 is connected to the rolling pin 114 and the bottom plate 1221 of the second housing 122, so that the rolling pin 114 and the second housing 122 are electrically insulated.
  • Example 4 The difference between Example 4 and Example 2 is that the electrode assembly 11 in Example 4 has no winding needle 114 and the position of the second empty foil area 1123 in Example 4.
  • the electrode assembly 11 is formed by winding the first pole piece 111 , the second pole piece 112 and the separator 113 .
  • the second empty foil region 1123 is located at the winding end of the second pole piece 112 . In this way, the second empty foil area 1123 is electrically connected to the side plate 1222 of the second casing 122 .
  • Embodiment 5 lies in the structures of the first casing 121 , the second casing 122 and the second insulating member 15 .
  • the second housing 122 includes a bottom plate 1221 , a side plate 1222 and a cover plate 1227 .
  • the side plate 1222 is disposed around the periphery of the bottom plate 1221 to form the accommodating space 13 together with the side plate 1222 .
  • the side plate 1222 includes a first surface 1224 facing away from the bottom plate 1221 .
  • the cover plate 1227 is connected to the first surface 1224 .
  • the cover plate 1227 can be connected to the side plate 1222 by welding.
  • the cover plate 1227 is provided with an opening 1228 .
  • the opening 1228 communicates with the accommodating space 13 .
  • the rolling pin 114 can be exposed to the cover plate 1227 through the opening 1228 .
  • the first casing 121 is disposed on the surface of the cover plate 1227 facing away from the bottom plate 1221 and completely covers the opening 1228 .
  • the second insulating member 15 is disposed between the cover plate 1227 and the first case 121, so that the first case 121 and the second case The bodies 122 are electrically insulated.
  • the second insulating member 15 is annular, and includes an opening 153 that communicates with the opening 1228 . In this way, the rolling pin 114 passes through the opening 1228 and the opening 153 in sequence to be electrically connected to the first housing 121 .
  • the battery 10 further includes a third insulating member 16 .
  • the third insulating member 16 is located between the electrode assembly 11 and the first casing 121, so as to avoid the problem of short circuit caused by direct contact between the electrode assembly 11 and the first casing 121.
  • the third insulating member 16 is provided with a through opening 161 . In this way, the rolling pin 114 can pass through the through-hole 161 , the opening 1228 and the opening 153 in sequence so as to be electrically connected to the first housing 121 .
  • Embodiment 6 lies in the position of the first empty foil area 1113 .
  • the first empty foil regions 1113 are respectively located at the edge regions on opposite sides of the first current collector 1111 . That is, the first empty foil region 1113 is located in the first edge region 1114 and the second edge region 1115 .
  • the first empty foil region 1113 located in the first edge region 1114 is electrically connected to the cover plate 1227 of the second casing 122, and the second empty foil region 1123 located in the second edge region 1115 is electrically connected to the The bottom plate 1221 of the second casing 122 .
  • Embodiment 7 lies in the position of the first empty foil area 1113 .
  • the first empty foil area 1113 is located at the first edge 22 .
  • the first edge region 1114 is electrically connected to the cover plate 1227 of the second casing 122 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

一种电池包括电极组件及壳体组件。所述壳体组件限定出收容电极组件的容置空间。所述壳体组件的材质为导电材料。所述壳体组件包括第一壳体及与第一壳体电性绝缘的第二壳体。所述电极组件包括第一极片、第二极片及隔膜。所述第一极片包括第一集流体及第一活性物质层，所述第二极片包括第二集流体及第二活性物质层。所述第一集流体包括第一空箔区。所述第一空箔区位于第一集流体的边缘区域，且第一空箔区由第一极片的卷绕起始端朝卷绕末端方向延伸。所述第一空箔区电连接第一壳体。所述第二集流体包括第二空箔区。所述第二空箔区位于第二极片的卷绕起始端或/和卷绕末端。所述第二空箔区电连接第二壳体。本申请还提供了一种具有所述电池的电子装置。

Description

电池及具有所述电池的电子装置 技术领域
本申请涉及电化学领域，具体涉及电池及具有所述电池的电子装置。
背景技术
锂离子电池由于其本身具有能量密度高、循环寿命长、环境友好等优点，而被广泛应用于各种电子设备中。但是，随着消费者对电子设备功能需求的日益剧增，这就对作为电子设备动力来源的电池提出了愈加严苛的要求。目前，一般电池中的卷芯需要借助极耳来实现与壳体的连接。不过，由于极耳自身具有一定的厚度，如此就导致了电池内部空间的极大浪费，从而影响到整个电池的能量密度。
发明内容
有鉴于此，有必要提供一种具有高能量密度的电池。
本申请还提供了一种具有所述电池的电子装置。
一种电池，包括电极组件及壳体组件。所述壳体组件限定出收容所述电极组件的容置空间。所述壳体组件的材质为导电材料。所述壳体组件包括第一壳体及连接所述第一壳体的第二壳体。所述第一壳体和所述第二壳体之间电性绝缘。所述电极组件包括第一极片、第二极片及位于所述第一极片和所述第二极片之间的隔膜。所述电极组件由所述第一极片、所述第二极片和所述隔膜卷绕形成。所述第一极片包括第一集流体及设置于所述第一集流体上的第一活性物质层。所述第二极片包括第二集流体及设置于所述第二集流体上的第二活性物质层。所述第一集流体包括第一空箔区。所述第一空箔区位于所述第一集流体的边缘区域，且所述第一空箔区由所述第一极片的卷绕起始端朝所述第一极片的卷绕末端方向延伸。所述第一 空箔区电连接所述第一壳体和所述第二壳体中的一方。所述第二集流体包括第二空箔区。所述第二空箔区位于所述第二极片的卷绕起始端或/和所述第二极片的卷绕末端。所述第二空箔区电连接所述第一壳体和所述第二壳体中的另一方。
一种可能的实施方式中，所述电极组件还包括卷针，所述第一极片、所述隔膜和所述第二极片以所述卷针为中心轴卷绕形成所述电极组件，所述第二空箔区位于所述第二极片的卷绕起始端，所述第二空箔区电连接所述卷针，所述卷针电连接所述第一壳体或所述第二壳体。
一种可能的实施方式中，所述电极组件还包括卷针，所述第一极片、所述隔膜和所述第二极片以所述卷针为中心轴卷绕形成所述电极组件，所述第二空箔区位于所述第二极片的卷绕起始端和所述第二极片的卷绕末端，位于所述第二极片的卷绕起始端的第二空箔区电连接所述卷针，所述卷针电连接所述第二壳体，位于所述第二极片的卷绕末端的第二空箔区电连接所述第二壳体。
一种可能的实施方式中，所述电极组件还包括卷针，所述第一极片、所述隔膜和所述第二极片以所述卷针为中心轴卷绕形成所述电极组件，所述第二空箔区位于所述第二极片的卷绕末端。
一种可能的实施方式中，所述第一空箔区分别位于所述第一集流体相对两侧的边缘区域。
一种可能的实施方式中，所述第一空箔区的至少一侧面未设置所述第一活性物质层，所述第二空箔区的至少一侧面未设置所述第二活性物质层。
一种可能的实施方式中，所述电池还包括第一绝缘件，所述第一绝缘件连接所述卷针和第一壳体，以使得所述卷针和所述第一壳体之间电性绝缘。
一种可能的实施方式中，所述卷针一体成型或拼接形成。
一种可能的实施方式中，所述电池还包括第二绝缘件，所述第二绝缘件连接所述第一壳体和所述第二壳体，以使得所述第一壳体和所述第二壳体之间电性绝缘。
一种电子装置，包括上述任一项所述的电池。
本申请中的电池中的第一极片和第二极片分别通过第一空箔区和第二空箔区的设置实现了与第一壳体和第二壳体间的电性连接，相较于现有电池，本申请中电池的设计有效避免了现有电池使用极耳作为电极组件和壳体之间的转接结构所带来的电池内部空间浪费的问题，如此，极大提升了电池的空间利用率，从而有效提升电池的能量密度及快充性能。
附图说明
图1为本申请一实施方式的电池的结构示意图。
图2A为图1所示电池的分解示意图。
图2B为图1所示电池的剖面示意图。
图3为图1所示壳体组件和第二绝缘件的剖面示意图。
图4为本申请一实施方式电极组件的剖面示意图。
图5A为本申请一实施方式的第一极片的剖面示意图。
图5B为本申请另一实施方式的第二极片的剖面示意图。
图6A为本申请一实施方式的第一极片的展开示意图。
图6B为本申请另一实施方式的第一极片的展开示意图。
图6C为本申请又一实施方式的第一极片的展开示意图。
图7A为本申请一实施方式的第二极片的剖面示意图。
图7B为本申请另一实施方式的第二极片的剖面示意图。
图7C为本申请另一实施方式的第二极片的剖面示意图。
图7D为本申请再一实施方式的第二极片的剖面示意图。
图8A为本申请一实施方式的第二极片的展开示意图。
图8B为本申请另一实施方式的第二极片的展开示意图。
图8C为本申请又一实施方式的第二极片的展开示意图。
图9为本申请另一实施方式的电池的结构示意图。
图10A为图9所示电池的分解示意图。
图10B为图9所示电池的剖面示意图。
图11为本申请一实施方式的电子装置的模块示意图。
主要元件符号说明
电池                         10
电极组件                     11
第一极片                     111
第一集流体                   1111
第一活性物质层               1112
第一空箔区                   1113
第一边缘区域                 1114
第二边缘区域                 1115
第二极片                     112
第二集流体                   1121
第二活性物质层               1122
第二空箔区                   1123
隔膜                         113
卷针                         114
壳体组件                     12
第一壳体                     121
顶板                         1211
第二凸出部                   1212
第二容置空间                 1213
第二壳体                     122
底板                         1221
侧板                         1222
第一容置空间                 1223
第一表面                     1224
第一凸出部                   1225
收容槽                       1226
盖板                         1227
开口                         1228
容置空间                     13
第一绝缘件                   14
第二绝缘件                   15
第一分部                     151
第二分部                     152
开孔                         153
第三绝缘件                   16
贯穿口                       161
电子装置                     1
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
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。
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例的目的，不是旨在于限制本申请。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
参阅图1，本申请实施方式提供了一种电池10。请一并参图2A、图3、图4、图5A、图6A、图7A和图8C，所述电池10包括电极组件11及壳体组件12。所述壳体组件12限定出收容所述电极组件11的容置空间13。所述壳体组件12的材质为导电材料。所述壳体组件12包括第一壳体121及连接所述第一壳体121的第二壳体122。所述第一壳体121和所述第二壳体122之间电性绝缘。所述电极组件11包括第一极片111、第二极片112及位于所述第一极片111和所述第二极片112之间的隔膜113。所述电极组件11由所述第一极片111、所述第二极片112和所述隔膜113卷绕形成。所述第一极片111包括第一集流体1111及设置于所述第一集流体1111上的第一活性物质层1112。所述 第一集流体1111包括第一空箔区1113。所述第一空箔区1113位于所述第一集流体1111的边缘区域，且所述第一空箔区1113由所述第一极片111的卷绕起始端朝所述第一极片111的卷绕末端方向延伸。所述第一空箔区1113电连接所述第一壳体121。所述第二极片112包括第二集流体1121及设置于所述第二集流体1121上的第二活性物质层1122。所述第二集流体1121包括第二空箔区1123。所述第二空箔区1123位于所述第二极片112的卷绕起始端或/和所述第二极片112的卷绕末端。所述第二空箔区1123电连接所述第二壳体122。
本申请中的电池10中的第一极片111和第二极片112分别通过第一空箔区1113和第二空箔区1123实现了与第一壳体121和第二壳体122之间的电性连接，相较于现有电池，本申请中电池10的设计有效避免了现有电池使用极耳作为电极组件和壳体之间的转接结构所带来的电池内部空间浪费的问题，如此，极大提升了电池10的空间利用率，从而有效提升电池10的能量密度及快充性能。
其中，所述导电材料不限于钢合金、铝合金、铁合金、铜合金、镍合金和不锈钢中的一种或多种。
可以理解，在其他实施方式中，所述第一空箔区1113可电连接所述第二壳体122，此时，所述第二空箔区1123则电连接所述第一壳体121。
在一些实施方式中，参图5A和图5B，所述第一空箔区1113的至少一侧面未设置所述第一活性物质层1112。参图7A、图7B、图7C和图7D，所述第二空箔区1123的至少一侧面未设置所述第二活性物质层1122。
参图2B，所述电极组件11还包括卷针114。所述第一极片111、所述隔膜113和所述第二极片112以所述卷针114为中心轴卷绕形成所述电极组件11。
在一些实施方式中，参图8A，所述第二空箔区1123位于所述第二极片112的卷绕起始端。所述第二空箔区1123电连接所述卷针114。所述卷针114电连接所述第二壳体122。在本实施方式中，所述电池10中的第一极片111通过所述第一空箔区1113与所述第一壳体121直接连接，如此省去了现有电池中作为转接结构的极耳的 使用，从而提高了电池10的能量密度。所述电池10中的第二极片112通过第二空箔区1123与电极组件11中间卷针114电连接导出，如此有效利用了电极组件11中部空置的空间，避免占用电极组件11外围空间，从而提升了电池10的能量密度。
在另一些实施方式中，参图8C，所述第二空箔区1123位于所述第二极片112的卷绕起始端和所述第二极片112的卷绕末端。位于所述第二极片112的卷绕起始端的第二空箔区1123电连接所述卷针114。所述卷针114电连接所述第二壳体122，位于所述第二极片112的卷绕末端的第二空箔区1123电连接所述第二壳体122。其中，本实施方式中的电池10分别通过卷针114和位于所述第二极片112的卷绕末端的第二空箔区1123来实现与所述第二壳体122的电性连接，如此大大提升了所述电池10的快充性能。
在又一些实施方式中，参图8B，所述第二空箔区1123位于所述第二极片112的卷绕末端。此时，所述卷针114不与壳体组件12电性连接。即，所述卷针114仅用于辅助完成电极组件11的卷绕。
在一些实施方式中，参图2A和图2B，所述电池10还包括第一绝缘件14。所述第一绝缘件14连接所述卷针114和所述第一壳体121，以使得所述卷针114和所述第一壳体121之间电性绝缘。可以理解，在其他实施方式中，当所述第一空箔区1113电连接所述第二壳体122时，所述卷针114电连接所述第一壳体121，此时，所述第一绝缘件14则连接所述卷针114和所述第二壳体122，以使得所述卷针114和所述第二壳体122之间电性绝缘。
在一些实施方式中，参图2，所述电池10还包括第二绝缘件15。所述第二绝缘件15连接所述第一壳体121和所述第二壳体122，以使得所述第一壳体121和所述第二壳体122之间电性绝缘。
在一些实施方式中，所述卷针114一体成型或拼接形成。
参图11，本申请实施方式还提供了一种电子装置1。所述电子装置1包括所述电池10。其中，所述电子装置1可以是移动电子设备、储能设备、电动汽车、混合动力电动汽车等。所述移动电子设备可以是移动电话、穿戴式电子设备、平板电脑、笔记本电脑等。
下面通过实施例对本申请的电池10进行具体说明。
实施例1
参图1、图2A和图2B，一种电池10包括电极组件11、壳体组件12、第一绝缘件14及第二绝缘件15。其中，所述壳体组件12限定出收容所述电极组件11的容置空间13。
参图1，在实施例1中，所述壳体组件12的材质为导电材料。所述壳体组件12包括第一壳体121及连接所述第一壳体121的第二壳体122。
其中，所述导电材料不限于钢合金、铝合金、铁合金、铜合金、镍合金和不锈钢中的一种或多种。
参图2A和图3，所述第二壳体122包括底板1221及侧板1222。所述侧板1222围设于所述底板1221周缘，以与所述侧板1222一起形成第一容置空间1223。其中，所述侧板1222包括背对所述底板1221的第一表面1224。在实施例1中，所述底板1221呈圆形。在其他实施方式中，所述底板1221的形状还可以是方形等规则形状或其他不规则形状，在此不作限定。
在实施例1中，参图2，所述第二壳体122还包括第一凸出部1225。所述第一凸出部1225凸设于所述第一表面1224，并与所述第一表面1224一起形成收容槽1226。
其中，所述第二壳体122可一体成型。在其他实施方式中，所述底板1221、所述侧板1222和所述第一凸出部1225也可通过焊接的方式连接为一体。
参图3，所述第一壳体121包括顶板1211及第二凸出部1212。所述第二凸出部1212凸设于所述顶板1211的周缘，以与所述顶板1211一起形成第二容置空间1213。其中，所述第二凸出部1212对应容置于所述收容槽1226的同时，所述第一凸出部1225一并容置于所述第二容置空间1213，以实现所述第一壳体121和所述第二壳体122的连接。此时，所述第一容置空间1223和所述第二容置空间1213连通，以共同构成收容所述电极组件11的容置空间13。
其中，所述第一壳体121可一体成型。在其他实施方式中，所述顶板1211和所述第二凸出部1212也可通过焊接的方式连接为一体。
参图3，所述第二绝缘件15连接于所述第一壳体121和所述第二壳体122之间，以使得所述第一壳体121和所述第二壳体122之间电性绝缘。
参图3，在实施例1中，所述第二绝缘件15包括第一分部151及第二分部152。所述第一分部151设置于所述收容槽1226内。所述第二分部152连接所述第一分部151，并设置于所述第一凸出部1225背对所述第一表面1224的表面。如此，在所述第二凸出部1212容置于所述收容槽1226时，由于所述第二绝缘件15的设置，将所述第一壳体121和所述第二壳体122间隔开，如此使得所述第一壳体121和所述第二壳体122之间实现电性绝缘。
参图2A、图2B和图4，所述电极组件11包括第一极片111、第二极片112、位于所述第一极片111和所述第二极片112之间的隔膜113以及卷针114。其中，所述第一极片111、所述隔膜113和所述第二极片112以所述卷针114为中心轴卷绕形成所述电极组件11。
参图5A和图6A，所述第一极片111包括第一集流体1111及设置于所述第一集流体1111上的第二活性物质层1122。其中，所述第一集流体1111包括与所述顶板1211相对的第一边缘区域1114。
参图2B、5A和图6A，在实施例1中，所述第一集流体1111包括第一空箔区1113。所述第一空箔区1113位于所述第一边缘区域1114，且所述第一空箔区1113由所述第一极片111的卷绕起始端朝所述第一极片111的卷绕末端方向延伸。所述第一空箔区1113电连接所述第一壳体121。其中，所述第一空箔区1113的两侧均未设置所述第一活性物质层1112。在其他实施例中，参图5B，所述第一空箔区1113的其中一侧未设置所述第一活性物质层1112。
参图2B、7A和图8C，所述第二极片112包括第二集流体1121及设置于所述第二集流体1121上的第二活性物质层1122。所述第二集流体1121包括第二空箔区1123。所述第二空箔区1123位于所述第二极片112的卷绕起始端和所述第二极片112的卷绕末端。位于所述第二极片112的卷绕起始端的第二空箔区1123电连接所述卷针114。所述卷针114电连接所述第二壳体122的底板1221。位于 所述第二极片112的卷绕末端的第二空箔区1123电连接所述第二壳体122的侧板1222。
其中，参图7A，所述第二空箔区1123的两侧均未设置所述第二活性物质层1122。在其他实施例中，参图7B，所述第二空箔区1123仅其中一侧未设置所述第二活性物质层1122。在另一其他实施例中，参图7C，位于所述第二极片112的卷绕起始端的第二空箔区1123的其中一侧未设置所述第二活性物质层1122。位于所述第二极片112的卷绕末端的第二空箔区1123的两侧均未设置所述第二活性物质层1122。或者，参图7D，位于所述第二极片112的卷绕起始端的第二空箔区1123的两侧均未设置所述第二活性物质层1122。位于所述第二极片112的卷绕末端的第二空箔区1123的其中一侧未设置所述第二活性物质层1122。
参图2A和图2B，所述第一绝缘件14连接所述顶板1211和所述卷针114之间，以使得所述第一壳体121和所述卷针114之间电性绝缘。
实施例2
实施例2与实施例1的区别在于，第二空箔区1123设置的位置。
在实施例2中，参图8A，所述第二空箔区1123仅位于所述第二极片112的卷绕起始端。所述第二空箔区1123电连接所述卷针114。如此，所述第二空箔区1123借助所述卷针114电连接所述第二壳体122的底板1221。
实施例3
实施例3与实施例2的区别在于，第一空箔区1113、卷针114和第一绝缘件14所设置的位置。
参图6B，所述第一集流体1111还包括与所述底板1221相对的第二边缘区域1115。在实施例3中，所述第一空箔区1113位于所述第二边缘区域1115，且所述第一空箔区1113由所述第一极片111的卷绕起始端朝所述第一极片111的卷绕末端方向延伸。所述第一空箔区1113电连接所述第二壳体122的底板1221。
在实施例3中，所述卷针114电连接所述第一壳体121的顶板1211。如此，所述第一绝缘件14连接所述卷针114和所述第二壳体 122的底板1221，以使得所述卷针114和所述第二壳体122之间电性绝缘。
实施例4
实施例4与实施例2的区别在于，实施例4中的电极组件11无卷针114，以及实施例4中第二空箔区1123的位置。
在实施例4中，所述电极组件11由所述第一极片111、所述第二极片112和所述隔膜113卷绕形成。参图8B，所述第二空箔区1123位于所述第二极片112的卷绕末端。如此，所述第二空箔区1123电连接所述第二壳体122的侧板1222。
实施例5
实施例5与实施例3的区别在于，第一壳体121、第二壳体122和第二绝缘件15的结构。
在实施例5中，参图9、图10A和图10B，所述第二壳体122包括底板1221、侧板1222及盖板1227。所述侧板1222围设于所述底板1221周缘，以与所述侧板1222一起形成所述容置空间13。所述侧板1222包括背对所述底板1221的第一表面1224。所述盖板1227连接第一表面1224。其中，所述盖板1227可通过焊接的方式与所述侧板1222实现连接。
参图10A和图10B，所述盖板1227上开设有开口1228。所述开口1228与所述容置空间13连通。如此，所述卷针114可通过所述开口1228暴露于所述盖板1227。
参图10A和图10B，所述第一壳体121设置于所述盖板1227背对所述底板1221的表面，并完全覆盖所述开口1228。
参图9、图10A和图10B，所述第二绝缘件15设置于所述盖板1227和所述第一壳体121之间，以使得所述第一壳体121和所述第二壳体122之间电性绝缘。在实施例5中，所述第二绝缘件15呈环状，包括与所述开口1228连通的开孔153。如此，所述卷针114依次穿过所述开口1228和所述开孔153，以与所述第一壳体121电性连接。
参图10A和图10B，进一步地，在实施例5中，所述电池10还包括第三绝缘件16。所述第三绝缘件16位于所述电极组件11和 所述第一壳体121之间，以避免所述电极组件11和所述第一壳体121直接接触而出现短路的问题。其中，所述第三绝缘件16上开设有贯穿口161。如此，所述卷针114可依次穿过所述贯穿口161、所述开口1228和所述开孔153，以与所述第一壳体121实现电性连接。
实施例6
实施例6与实施例5的区别在于，第一空箔区1113的位置。
参图6C，在实施例6中，所述第一空箔区1113分别位于所述第一集流体1111相对两侧的边缘区域。即，所述第一空箔区1113位于所述第一边缘区域1114和所述第二边缘区域1115。其中，位于所述第一边缘区域1114的第一空箔区1113电连接所述第二壳体122的盖板1227，位于所述第二边缘区域1115的第二空箔区1123电连接所述第二壳体122的底板1221。
实施例7
实施例7与实施例5的区别在于，第一空箔区1113的位置。
参图6A，在实施例7中，所述第一空箔区1113位于所述第一边缘22。其中，所述第一边缘区域1114电连接所述第二壳体122的盖板1227。
以上实施例仅用以说明本申请的技术方案而非限制，尽管参照较佳实施例对本申请进行了详细的说明，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，而不脱离本申请技术方案的精神和实质。

Claims (10)

  1. 一种电池，包括电极组件及壳体组件，所述壳体组件限定出收容所述电极组件的容置空间，其特征在于，
    所述壳体组件的材质为导电材料，所述壳体组件包括第一壳体及连接所述第一壳体的第二壳体，所述第一壳体和所述第二壳体之间电性绝缘；
    所述电极组件包括第一极片、第二极片及位于所述第一极片和所述第二极片之间的隔膜，所述电极组件由所述第一极片、所述第二极片和所述隔膜卷绕形成，所述第一极片包括第一集流体及设置于所述第一集流体上的第一活性物质层，所述第二极片包括第二集流体及设置于所述第二集流体上的第二活性物质层；
    所述第一集流体包括第一空箔区，所述第一空箔区位于所述第一集流体的边缘区域，且所述第一空箔区由所述第一极片的卷绕起始端朝所述第一极片的卷绕末端方向延伸，所述第一空箔区电连接所述第一壳体和所述第二壳体中的一方；
    所述第二集流体包括第二空箔区，所述第二空箔区位于所述第二极片的卷绕起始端或/和所述第二极片的卷绕末端，所述第二空箔区电连接所述第一壳体和所述第二壳体中的另一方。
  2. 如权利要求1所述的电池，其特征在于，所述电极组件还包括卷针，所述第一极片、所述隔膜和所述第二极片以所述卷针为中心轴卷绕形成所述电极组件，所述第二空箔区位于所述第二极片的卷绕起始端，所述第二空箔区电连接所述卷针，所述卷针电连接所述第一壳体或所述第二壳体。
  3. 如权利要求1所述的电池，其特征在于，所述电极组件还包括卷针，所述第一极片、所述隔膜和所述第二极片以所述卷针为中心轴卷绕形成所述电极组件，所述第二空箔区位于所述第二极片的卷绕起始端和所述第二极片的卷绕末端，位于所述第二极片的卷绕起始端的第二空箔区电连接所述卷针，所述卷针电连接所述第二壳体，位于所述第二极片的卷绕末端的第二空箔区电连接所述第二壳体。
  4. 如权利要求1所述的电池，其特征在于，所述电极组件还包括 卷针，所述第一极片、所述隔膜和所述第二极片以所述卷针为中心轴卷绕形成所述电极组件，所述第二空箔区位于所述第二极片的卷绕末端。
  5. 如权利要求1所述的电池，其特征在于，所述第一空箔区分别位于所述第一集流体相对两侧的边缘区域。
  6. 如权利要求1所述的电池，其特征在于，所述第一空箔区的至少一侧面未设置所述第一活性物质层，所述第二空箔区的至少一侧面未设置所述第二活性物质层。
  7. 如权利要求2-4中任一项所述的电池，其特征在于，所述电池还包括第一绝缘件，所述第一绝缘件连接所述卷针和第一壳体，以使得所述卷针和所述第一壳体之间电性绝缘。
  8. 如权利要求2-4中任一项所述的电池，其特征在于，所述卷针一体成型或拼接形成。
  9. 如权利要求1-6中任一项所述的电池，其特征在于，所述电池还包括第二绝缘件，所述第二绝缘件连接所述第一壳体和所述第二壳体，以使得所述第一壳体和所述第二壳体之间电性绝缘。
  10. 一种电子装置，其特征在于，所述电子装置包括如权利要求1-9中任一项所述的电池。
PCT/CN2020/117216 2020-09-23 2020-09-23 电池及具有所述电池的电子装置 WO2022061610A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/CN2020/117216 WO2022061610A1 (zh) 2020-09-23 2020-09-23 电池及具有所述电池的电子装置
KR1020237004351A KR20230026521A (ko) 2020-09-23 2020-09-23 배터리 및 상기 배터리를 구비한 전자 장치
CN202080013359.6A CN113474941A (zh) 2020-09-23 2020-09-23 电池及具有所述电池的电子装置
EP20954464.2A EP4203137A1 (en) 2020-09-23 2020-09-23 Battery and electronic device having same
US18/187,949 US20230231205A1 (en) 2020-09-23 2023-03-22 Battery and electronic device containing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/117216 WO2022061610A1 (zh) 2020-09-23 2020-09-23 电池及具有所述电池的电子装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/187,949 Continuation US20230231205A1 (en) 2020-09-23 2023-03-22 Battery and electronic device containing same

Publications (1)

Publication Number Publication Date
WO2022061610A1 true WO2022061610A1 (zh) 2022-03-31

Family

ID=77868496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/117216 WO2022061610A1 (zh) 2020-09-23 2020-09-23 电池及具有所述电池的电子装置

Country Status (5)

Country Link
US (1) US20230231205A1 (zh)
EP (1) EP4203137A1 (zh)
KR (1) KR20230026521A (zh)
CN (1) CN113474941A (zh)
WO (1) WO2022061610A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115799657B (zh) * 2022-12-28 2023-11-03 楚能新能源股份有限公司 一种圆柱电池及其制造工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102057521A (zh) * 2009-06-30 2011-05-11 松下电器产业株式会社 卷绕型电极组及电池
US20160118681A1 (en) * 2014-10-24 2016-04-28 Samsung Sdi Co., Ltd. Rechargeable battery
CN109065822A (zh) * 2018-09-20 2018-12-21 刘秦 纽扣电池
CN110364674A (zh) * 2019-06-11 2019-10-22 温州大学新材料与产业技术研究院 一种高电压的软包电池及其制备方法
CN111403632A (zh) * 2020-03-19 2020-07-10 深圳市秸川材料科技有限公司 纽扣电池

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203631692U (zh) * 2013-12-30 2014-06-04 普天新能源车辆技术有限公司 一种电池
CN210379288U (zh) * 2019-09-26 2020-04-21 广东微电新能源有限公司 一种电池卷芯用的电极片及柱状或纽扣电池

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102057521A (zh) * 2009-06-30 2011-05-11 松下电器产业株式会社 卷绕型电极组及电池
US20160118681A1 (en) * 2014-10-24 2016-04-28 Samsung Sdi Co., Ltd. Rechargeable battery
CN109065822A (zh) * 2018-09-20 2018-12-21 刘秦 纽扣电池
CN110364674A (zh) * 2019-06-11 2019-10-22 温州大学新材料与产业技术研究院 一种高电压的软包电池及其制备方法
CN111403632A (zh) * 2020-03-19 2020-07-10 深圳市秸川材料科技有限公司 纽扣电池

Also Published As

Publication number Publication date
US20230231205A1 (en) 2023-07-20
KR20230026521A (ko) 2023-02-24
CN113474941A (zh) 2021-10-01
EP4203137A1 (en) 2023-06-28

Similar Documents

Publication Publication Date Title
US11515598B2 (en) Battery pack
US7585589B2 (en) Pouch-type lithium secondary battery
CN101271985B (zh) 可再充电电池及其制造方法
US7981540B2 (en) Rechargeable battery
JP4243409B2 (ja) リチウム２次電池
CN210136949U (zh) 二次电池
EP3770988A1 (en) Secondary battery
WO2021195999A1 (zh) 电芯、电池及电子装置
CN214203812U (zh) 电池单体、电池以及用电装置
CN212571274U (zh) 锂离子电池及电子设备
US20090029246A1 (en) Pouch-type secondary battery
KR20160106426A (ko) 이차 전지
KR20150032971A (ko) 단차가 형성된 젤리-롤형 전극조립체를 포함하는 전지셀
CN113597709B (zh) 电池和具有所述电池的电子装置
WO2022061610A1 (zh) 电池及具有所述电池的电子装置
CN113853703B (zh) 电池及具有所述电池的电子装置
WO2022011558A1 (zh) 电池和具有所述电池的用电装置
KR20160052252A (ko) 이차 전지
KR100472510B1 (ko) 젤리-롤형의 전지부와, 이의 와인딩방법 및 이를 이용하여제조된 리튬이차전지
KR101462043B1 (ko) 계단 구조의 전극조립체를 포함하는 전지셀
JP2005222887A (ja) 電極捲回型電池
KR101675939B1 (ko) 단차가 형성된 전극조립체를 포함하는 전지셀
US20220085465A1 (en) Current collecting member and manufacturing method thereof, secondary battery and manufacturing method thereof, battery module, and apparatus
JP3209731U (ja) 積層電池
JP2001185201A (ja) 密閉電池

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20954464

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20237004351

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2020954464

Country of ref document: EP

Effective date: 20230321

NENP Non-entry into the national phase

Ref country code: DE