WO2022067693A1 - 电池模组、电池包及电子装置 - Google Patents

电池模组、电池包及电子装置 Download PDF

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Publication number
WO2022067693A1
WO2022067693A1 PCT/CN2020/119462 CN2020119462W WO2022067693A1 WO 2022067693 A1 WO2022067693 A1 WO 2022067693A1 CN 2020119462 W CN2020119462 W CN 2020119462W WO 2022067693 A1 WO2022067693 A1 WO 2022067693A1
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WO
WIPO (PCT)
Prior art keywords
cell
circuit board
battery
battery module
tab
Prior art date
Application number
PCT/CN2020/119462
Other languages
English (en)
French (fr)
Inventor
王慎波
吴克成
Original Assignee
东莞新能安科技有限公司
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 东莞新能安科技有限公司 filed Critical 东莞新能安科技有限公司
Priority to PCT/CN2020/119462 priority Critical patent/WO2022067693A1/zh
Priority to CN202080105753.2A priority patent/CN116325337A/zh
Priority to EP20955718.0A priority patent/EP4207475A1/en
Publication of WO2022067693A1 publication Critical patent/WO2022067693A1/zh
Priority to US18/191,228 priority patent/US20230238662A1/en

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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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/103—Primary casings, jackets or wrappings of a single cell or a single battery 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • 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

Definitions

  • the present application relates to the field of batteries, and in particular, to a battery module, a battery pack and an electronic device having the battery module.
  • the present application provides a battery module and a battery having the battery module, wherein the first battery cell is arranged obliquely relative to the second battery cell, and the first circuit board is arranged on the first battery cell and the battery module. Between the second cells, the first circuit board is inclined relative to the first cell, and the first circuit board is inclined relative to the second cell. The space between the cells is provided with the first circuit board, which makes full use of the space inside the battery and effectively improves the energy density.
  • Embodiments of the present application provide a battery module including a battery core assembly and a first circuit board.
  • the cell assembly includes a plurality of cells connected to the first circuit board.
  • the plurality of cells include a first cell and a second cell, and the first cell is inclined relative to the second cell.
  • the first circuit board is arranged between the first battery core and the second battery core, the first circuit board is arranged obliquely relative to the first battery core, and the first circuit board is opposite to the first battery core.
  • the two cells are set at an incline.
  • each of the cells includes a housing and an electrode assembly housed in the housing, the electrode assembly including tabs.
  • the casing includes a first main plane and a second main plane opposite to each other, and along the length of the cell, one end of the casing is provided with a sealing edge, and the pole Ears extend out of the housing from the edge seal.
  • the first cell includes a first tab
  • the second cell includes a second tab
  • the first tab and the second tab are disposed opposite to each other.
  • the housing also includes a first surface connecting the edge seal and the first main plane, and a second surface connecting the edge seal and the second main plane, along the thickness direction, the first surface The width of one surface is greater than the width of the second surface.
  • One end of the first circuit board is inclined close to the first surface of the first cell, and the opposite end of the first circuit board is inclined close to the first surface of the second cell.
  • the first circuit board is disposed between the first tab and the second tab.
  • the first tab includes a first weld and the second tab includes a second weld.
  • the battery module includes a first connecting piece and a second connecting piece.
  • the first connecting piece includes a first fixing portion and a first connecting portion, the first fixing portion is welded to the first circuit board, the first connecting portion is welded to the first welding portion, and the first connecting portion is welded to the first welding portion.
  • a welding portion is provided between the first fixing portion and the first connecting portion.
  • the second connecting piece includes a second fixing portion and a second connecting portion, the second fixing portion is welded to the first circuit board, the second connecting portion is welded to the second welding portion, and the first Two welding parts are provided between the second fixing part and the second connecting part.
  • the first fixing portion and the first connecting portion clamp the first welding portion, one surface of the first welding portion is in contact with the first connecting portion, and the first welding portion is in contact with the first connecting portion.
  • the opposite surface of a welding portion is in contact with the first fixing portion.
  • the second fixing portion and the second connecting portion clamp the second welding portion, one surface of the second welding portion is in contact with the second connecting portion, and the other opposite the second welding portion is connected. A surface is in contact with the second fixing portion.
  • the first welding part is provided between the first surface of the first cell and the first circuit board, and the second welding part is provided on the second surface of the second cell and the first circuit board.
  • the first circuit board includes a first side surface and a second side surface disposed opposite to each other, the first tab is provided on the first side surface, and the second tab is provided on the second side surface side.
  • the first circuit board forms an acute angle with the sealing edge of the first cell, and the acute angle ranges from 30° to 60°.
  • the battery module further includes a first insulating member and a second insulating member, the first insulating member covers at least part of the edge of the first cell, and the second insulating member covers Covering at least part of the edge sealing of the second cell.
  • the first insulating member is provided with a first opening, and the first tab protrudes from the first opening; the second insulating member is provided with a second opening, and the second electrode is An ear protrudes from the second opening.
  • Embodiments of the present application further provide a battery pack, including a casing and the battery module described in any one of the above, wherein the battery module is accommodated in the casing.
  • the battery pack further includes a second circuit board, one end of the second circuit board is connected to the first circuit board of the battery module, and the other end of the second circuit board protrudes out of the shell.
  • the housing includes an arc-shaped bottom plate, an inner side wall of the arc-shaped bottom plate is provided with a first groove and a second groove, and the battery pack further includes a first spacer and a second spacer , the first separator is arranged between the first cell of the battery module and the first groove, and the second separator is arranged between the second cell of the battery module and the first groove between the second grooves.
  • the first spacer covers the first groove
  • the second spacer covers the second groove
  • the arc radius of the arc-shaped bottom plate is 85-110 mm.
  • the housing further includes a side plate and an arc-shaped cover plate, the side plate is disposed around the arc-shaped bottom plate, the arc-shaped cover plate is fixedly connected with the side plate, and the arc-shaped cover plate is The arc radius of the plate is 80-100mm.
  • the battery pack further includes a fixing member, the fixing member includes a first bracket, a second bracket and a connecting portion, the first bracket and the second bracket are respectively disposed on the connecting portion.
  • the first cell of the battery module is arranged on the first bracket, the second cell is arranged in the second bracket, and the first circuit board is arranged in the connecting portion.
  • resin is provided in the casing for filling the gap between the casing and the cell components of the battery module.
  • the housing is provided with an injection hole, and the resin is filled in the housing by low pressure injection molding.
  • An embodiment of the present application further provides an electronic device, the electronic device includes an electrical component and the battery pack according to any one of the above, where the electrical component is electrically connected to the battery pack.
  • the cell is a soft-wrapped cell
  • the material of the tab is a conductive metal or alloy, such as copper, aluminum, nickel, nickel-plated copper, nickel-plated aluminum, and the like.
  • An embodiment of the present application further provides an electronic device, the electronic device includes an electrical component and the battery pack according to any one of the above, where the electrical component is electrically connected to the battery pack.
  • the first cell of the battery module is arranged obliquely relative to the second cell, the first circuit board is arranged between the first cell and the second cell, and the first circuit board is opposite to the second cell.
  • the first cell is inclined and the first circuit board is inclined relative to the second cell.
  • FIG. 1 is a schematic three-dimensional structure diagram of a battery pack in an embodiment.
  • FIG. 2 is a schematic cross-sectional structural diagram of the battery pack shown in FIG. 1 .
  • FIG. 3 is a side view of the cells in the battery pack shown in FIG. 1 .
  • FIG. 4 is a schematic cross-sectional structure diagram of the cell shown in FIG. 3 .
  • FIG. 5 is a schematic structural diagram of a battery module in the battery pack shown in FIG. 2 .
  • FIG. 6 is an enlarged view of a partial structure of the battery module shown in FIG. 5 .
  • FIG. 7 is a schematic cross-sectional structure diagram of the battery module shown in FIG. 5 .
  • FIG. 8 is an enlarged view of a partial structure of the battery module shown in FIG. 7 .
  • FIG. 9 is a schematic structural diagram of a first cell in the battery module shown in FIG. 5 .
  • FIG. 10 is a schematic structural diagram of a second cell in the battery module shown in FIG. 5 .
  • FIG. 11 is a side view of the battery pack shown in FIG. 1 .
  • FIG. 12 is a schematic diagram of a partial structure of the casing in the battery pack shown in FIG. 1 .
  • FIG. 13 is a schematic diagram of an exploded structure of a battery pack in an embodiment.
  • FIG. 14 is a schematic structural diagram of an electronic device in an embodiment.
  • An embodiment of the present application provides a battery module, including a battery core assembly and a first circuit board.
  • the cell assembly includes a plurality of cells connected to the first circuit board.
  • the plurality of cells include a first cell and a second cell, and the first cell is inclined relative to the second cell.
  • the first circuit board is arranged between the first battery core and the second battery core, the first circuit board is arranged obliquely relative to the first battery core, and the first circuit board is opposite to the first battery core.
  • the two cells are set at an incline.
  • the above-mentioned battery module makes full use of the space inside the battery and effectively improves the energy density by arranging the first circuit board in the space between the first battery cell and the second battery core.
  • the battery pack 200 includes a battery module 100 and a casing 70 , and the battery module 100 is accommodated in the casing 70 .
  • the battery module 100 includes a battery cell assembly and a first circuit board 20 .
  • the cell assembly includes a plurality of cells 10 , and the cells 10 are connected to the first circuit board 20 .
  • the plurality of cells 10 are soft-wrapped cells, and each cell 10 includes a casing 101 and an electrode assembly accommodated in the casing 101 102.
  • the electrode assembly 102 includes tabs 103 extending out of the housing 101 .
  • the casing 101 includes a first main plane 1011 and a second main plane 1012 that are oppositely disposed.
  • the length direction of the cell 10 in the direction indicated by arrow B in FIG.
  • the housing 101 further includes a first surface 1014 and a second surface 1015, the first surface 1014 connects the edge 1013 and the first main plane 1011, and the second surface 1015 connects the edge 1013 and the second principal plane 1012. Along the thickness direction, the width of the first surface 1014 is greater than the width of the second surface 1015 .
  • the plurality of cells 10 include a first cell 11 and a second cell 12 , and the first cell 11 is inclined relative to the second cell 12 set up.
  • the structures of the first cell 11 and the second cell 12 are substantially the same.
  • the plurality of cells 10 may further include a third cell, a fourth cell, and the like, which the present application is not limited to.
  • the first circuit board 20 is disposed between the first cell 11 and the second cell 12 .
  • the first circuit board 20 is inclined relative to the first cell 11
  • the first circuit board 20 is inclined relative to the second cell 12 .
  • the battery module 100 utilizes the first cell 11 and the second cell 12 .
  • the first circuit board 20 is arranged in the space between the second battery cells 12 which are arranged obliquely, so that the space inside the battery can be fully utilized, and the energy density can be effectively improved.
  • One end of the first circuit board 20 is inclined close to the first surface 1014 of the first cell 11 , and the opposite end of the first circuit board 20 is inclined close to the first surface 1014 of the second cell 12 . Since the width of the first surface 1014 is greater than the width of the second surface 1015 , when the opposite ends of the first circuit board 20 are inclined toward the first surface 1014 , the first surface 1014 can be better utilized to make the The first circuit board 20 is provided with a large width.
  • the first circuit board 20 and the edge 1013 of the first cell 11 form an acute angle a.
  • the range of the acute angle a can be adjusted according to the inclination angle of the cell 10 and the inclination angle of the first circuit board 20 .
  • the best acute angle range is 30-60°.
  • the first surface 1014 of the first cell 11 is disposed opposite to the second surface 1015 of the second cell 12 , and the second surface 1015 of the first cell 11 is opposite to the second surface 1015 of the second cell 12 .
  • a surface 1014 is disposed opposite.
  • the first cell 11 includes a first tab 113
  • the second cell 12 includes a second tab 123
  • the ears 123 are arranged oppositely.
  • the first circuit board 20 is disposed between the first tab 113 and the second tab 123 .
  • the first tab 113 is inclined close to the first surface 1014 of the first cell 11
  • the second tab 123 is inclined close to the second surface 1015 of the second cell 12
  • the first circuit board 20 includes a first side surface 21 and a second side surface 22 arranged opposite to each other, the first tab 113 is arranged on the first side 21 , and the second tab 123 is arranged on the second side.
  • first tab 113 and the second tab 123 can be directly soldered to the first circuit board 20, such as by SMT or DIP soldering, or connected to the first circuit board 20 through other connecting pieces circuit board 20 .
  • the materials of the first tab 113 and the second tab 123 are conductive metals or alloys, such as copper, aluminum, nickel, nickel-plated copper, nickel-plated aluminum, etc.
  • the diode tabs 123 are easy to bend, and can be bent at different angles according to the requirements of the battery module 100 , which occupies less space.
  • the battery module 100 further includes a first connecting piece 30 and a second connecting piece 40 .
  • the first connecting piece 30 is used for connecting the first tab 113 and the first circuit board 20
  • the second connecting piece 40 is used for connecting the second tab 123 and the first circuit board 20.
  • the first tab 113 includes a first welding portion 1131
  • the second tab 123 includes a second welding portion 1231 .
  • the first connecting piece 30 includes a first fixing portion 31 and a first connecting portion 32 , the first fixing portion 31 is welded to the first circuit board 20 , and the first connecting portion 32 is welded to the first circuit board 20 . Welded portion 1131.
  • the first welding portion 1131 is provided between the first fixing portion 31 and the first connecting portion 32 .
  • the second connecting piece 40 includes a second fixing portion 41 and a second connecting portion 42 , the second fixing portion 41 is welded to the first circuit board 20 , and the second connecting portion 42 is welded to the second connecting portion 42 .
  • the second welding portion 1231 is provided between the second fixing portion 41 and the second connecting portion 42 .
  • the first connecting piece 30 and the second connecting piece 40 have an “L”-shaped structure, and the first fixing portion 31 and the first connecting portion 32
  • the second fixing portion 41 and the second connecting portion 42 are arranged substantially vertically.
  • the first welding part 1131 and the second welding part 1231 are respectively welded to the first connecting part 32 and the second connecting part 42
  • the first fixing part 31 and the second fixing part 41 are respectively welded to the first circuit board 20
  • the first battery cell 11 and the second battery cell 12 are perpendicular to the first circuit board 20 .
  • the first tab 113 and the second tab 123 are bent, so that the first welding part 1131 is sandwiched between the first fixing part 31 and the first connecting part 32, and the second welding part 1231 is sandwiched between Between the second fixing portion 41 and the second connecting portion 42 , the second cell 12 is inclined relative to the first cell 11 , and the first circuit board 20 is inclined relative to the first cell 11 and the second cell 12 .
  • the first connecting piece 30 and the second connecting piece 40 By arranging the first connecting piece 30 and the second connecting piece 40, the space of the first circuit board 20 can be better utilized.
  • the first fixing portion 31 and the second fixing portion 41 can be based on the first circuit board.
  • the design of 20 is soldered to different positions on the circuit board.
  • the first fixing portion 31 and the first connecting portion 32 can be bent to form different angles according to requirements.
  • the first fixing portion 31 and the first connecting portion 32 clamp the first welding portion 1131 .
  • One surface of the first welding portion 1131 is in contact and connection with the first connecting portion 32
  • the other surface opposite to the first welding portion 1131 is in contact and connection with the first fixing portion 31 .
  • the second fixing portion 41 and the second connecting portion 42 clamp the second welding portion 1231, one surface of the second welding portion 1231 is in contact with the second connecting portion 42, and the second welding portion 1231 is in contact with the second connecting portion 42.
  • the opposite surface of the welding portion 1231 is in contact with the second fixing portion 41 .
  • the first connecting piece 30 and the first welding part 1131 can be fixed more stably, and the first connecting piece 30 and the first welding part 1131 can be prevented from being separated in the case of dropping.
  • the other surface opposite to the welding portion 1131 and the first fixing portion 31 can also be fixedly connected in other ways, such as fixing glue or the like.
  • the battery module 100 further includes an insulating member 50 , and the insulating member 50 covers at least part of the edge sealing 1013 of the battery cell 10 .
  • the insulating member 50 includes a first insulating member 51 and a second insulating member 52 .
  • the first insulating member 51 covers at least part of the edge sealing 1013 of the first cell 11
  • the second insulating member 52 covers At least part of the edge sealing 1013 of the second cell 12 .
  • the first insulating member 51 is provided with a first opening 511 , and the first tab 113 protrudes from the first opening 511 .
  • the second insulating member 52 is provided with a second opening 521 , and the second tab 123 protrudes from the second opening 521 .
  • the insulating member 50 can support the sealing edge 1013 to prevent its deformation, and on the other hand, it can isolate the tab 103 to reduce the occurrence of short circuit.
  • the battery pack 200 further includes a second circuit board 60 , one end of the second circuit board 60 is connected to the first circuit board 20 , and the other end of the second circuit board 60 is connected to the first circuit board 20 . Extends out of the housing 70 .
  • the second circuit board 60 is a flexible circuit board. Along the length direction of the cell assembly, the second circuit board 60 protrudes from one side of the casing 70 .
  • the battery pack 200 further includes a spacer 14 , and the spacer 14 is disposed on the first main plane 1011 and the second main plane 1012 of the cell 10 along the thickness direction of the cell 10 .
  • the spacer 14 includes, but is not limited to, materials such as foam, for absorbing the expanded volume of the battery cell 10 .
  • the housing includes an arc-shaped bottom plate 71 , a side plate 72 arranged around the arc-shaped bottom plate 71 , and an arc-shaped cover plate 73 .
  • the side plate 72 and the arc-shaped bottom plate 71 are integrally formed.
  • the side edges of the arc-shaped cover plate 73 are fixedly connected to the side plate 72 , and the fixed connection methods include but are not limited to clamping, riveting, welding, bonding, and the like.
  • the second circuit board 60 protrudes from between the arc-shaped cover plate 73 and the side plate 72 . Referring to FIG.
  • the arc radius R1 of the arc-shaped bottom plate 71 is 85-110 mm
  • the arc-shaped radius R2 of the arc-shaped cover plate 73 is 80-100 mm.
  • the arc-shaped bottom plate 71 is an integrally formed plastic part
  • the arc-shaped cover plate 73 is a steel sheet
  • the steel sheet improves the resistance of the battery pack 200 to shock from the outside.
  • the overall design avoids damage to the user during battery failure.
  • the battery pack 200 is suitable for headphones, wherein the curved cover plate 73 is close to the user's head, and the steel sheet is stronger than the plastic sheet. The parts have better strength, and when the battery fails, the curved bottom plate 71 will be damaged first, so as to protect the head.
  • a first groove 711 and a second groove 712 are formed on the inner sidewall of the arc-shaped bottom plate 71 for providing expansion space for the first cell 11 and the second cell 12 respectively.
  • the battery pack 200 further includes a first spacer 81 and a second spacer 82, the first spacer 81 is disposed between the first cell 11 and the first groove 711, and the second spacer 82 82 is provided between the second cell 12 and the second groove 712 .
  • the first spacer 81 covers the first groove 711
  • the second spacer 82 covers the second groove 712 .
  • the first spacer 81 and the second spacer 82 are used to support the first cell 11 and the second cell 12 .
  • the structure of the battery pack 200 is substantially the same as that of the previous embodiment, the difference is that the battery pack 200 further includes a fixing member 90 for fixing the cell components, and the fixing member 90 It is accommodated in the space between the casing 70 and the cell assembly.
  • the fixing member 90 includes a first bracket 91 , a second bracket 92 and a connecting portion 93 , and the first bracket 91 and the second bracket 92 are respectively disposed on opposite sides of the connecting portion 93 .
  • the first bracket 91 is inclined relative to the connecting portion 93
  • the second bracket 92 is inclined relative to the connecting portion 93 .
  • the first battery cell 11 is arranged on the first bracket 91
  • the second battery core 12 is arranged on the second bracket 92
  • the first circuit board 20 is obliquely disposed on the connecting portion 93 .
  • the fixing member 90 is filled with resin between the shell 70 and the cell assembly, and the resin fills the gap between the shell 70 and the cell assembly to fix the cell assembly
  • the resin may be plastic
  • an injection hole 721 is formed on the side plate 72 of the casing 70
  • the resin is filled into the casing 70 from the injection hole 721 by low pressure injection molding.
  • the resin can flow between the first cell 11 , the second cell 12 and the first circuit board 20 from the through hole 931 to ensure that the gap between the three can be filled.
  • the resin-filled battery pack 200 is waterproof.
  • the resin can also form a certain protective effect on the battery cell 10 to prevent the battery core 10 from being damaged in the event of a drop or the like.
  • the resin is a potting glue, and the potting glue is filled in the casing 70 through the injection hole 721 .
  • the fixing member 90 may also include a fixing bracket and resin at the same time, so as to achieve better fixing.
  • an embodiment of the present application further provides an electronic device 300 .
  • the electronic device 300 includes an electrical component 301 and the battery pack 200 in any of the above-mentioned embodiments or a combination of the embodiments.
  • the battery pack 200 is connected.

Abstract

本申请提供了一种电池模组，包括电芯组件和第一电路板。所述电芯组件包括多个电芯，所述多个电芯连接于所述第一电路板。所述多个电芯包括第一电芯和第二电芯，所述第一电芯相对所述第二电芯倾斜设置。所述第一电路板设于所述第一电芯和所述第二电芯之间，所述第一电路板相对所述第一电芯倾斜设置，所述第一电路板相对所述第二电芯倾斜设置。上述电池模组通过在第一电芯和第二电芯之间的空间设置第一电路板，充分利用了电池内部的空间，有效提高能量密度。本申请还提供一种具有该电池模组的电池包及电子装置。

Description

电池模组、电池包及电子装置 技术领域
本申请涉及电池领域，尤其涉及一种电池模组和具有该电池模组的电池包及电子装置。
背景技术
随着穿戴式电子设备的小型化发展，电子设备对电池的要求越来越高，电池在电子设备中能够占用的空间越来越小，并且电子设备中的电池仓形状也多为不规则形状。如何合理利用电池内部空间，提高电池的能量密度成为需要解决的问题。
发明内容
鉴于上述状况，本申请提供一种电池模组和具有该电池模组的电池，所述第一电芯相对所述第二电芯倾斜设置，第一电路板设于所述第一电芯和所述第二电芯之间，所述第一电路板相对所述第一电芯倾斜设置，所述第一电路板相对所述第二电芯倾斜设置，通过在第一电芯和第二电芯之间的空间设置第一电路板，充分利用了电池内部的空间，有效提高能量密度。
本申请的实施例提供一种电池模组，包括电芯组件和第一电路板。所述电芯组件包括多个电芯，所述多个电芯连接于所述第一电路板。所述多个电芯包括第一电芯和第二电芯，所述第一电芯相对所述第二电芯倾斜设置。所述第一电路板设于所述第一电芯和所述第二电芯之间，所述第一电路板相对所述第一电芯倾斜设置，所述第一电路板相对所述第二电芯倾斜设置。
在一些实施例中，每一所述电芯包括壳体和收容于所述壳体的 电极组件，所述电极组件包括极耳。沿所述电芯的厚度方向，所述壳体包括相对设置的第一主平面和第二主平面，沿所述电芯的长度方向，所述壳体的一端设有封边，所述极耳从所述封边延伸出所述壳体。所述第一电芯包括第一极耳，所述第二电芯包括第二极耳，所述第一极耳和所述第二极耳相对设置。所述壳体还包括连接所述封边和所述第一主平面的第一表面，和连接所述封边和所述第二主平面的第二表面，沿所述厚度方向，所述第一表面的宽度大于所述第二表面的宽度。所述第一电路板的一端靠近所述第一电芯的第一表面倾斜，所述第一电路板的相对另一端靠近所述第二电芯的第一表面倾斜。
在一些实施例中，所述第一电路板设于所述第一极耳和所述第二极耳之间。
在一些实施例中，所述第一极耳包括第一焊接部，所述第二极耳包括第二焊接部。所述电池模组包括第一连接片和第二连接片。所述第一连接片包括第一固定部和第一连接部，所述第一固定部焊接于所述第一电路板，所述第一连接部焊接于所述第一焊接部，所述第一焊接部设于所述第一固定部和所述第一连接部之间。所述第二连接片包括第二固定部和第二连接部，所述第二固定部焊接于所述第一电路板，所述第二连接部焊接于所述第二焊接部，所述第二焊接部设于所述第二固定部和所述第二连接部之间。
在一些实施例中，所述第一固定部和所述第一连接部夹持所述第一焊接部，所述第一焊接部的一个表面与所述第一连接部接触连接，所述第一焊接部相对的另一表面与所述第一固定部接触连接。所述第二固定部和所述第二连接部夹持所述第二焊接部，所述第二焊接部的一个表面与所述第二连接部接触连接，所述第二焊接部相对的另一表面与所述第二固定部接触连接。
在一些实施例中，所述第一焊接部设于所述第一电芯的第一表 面和第一电路板之间，所述第二焊接部设于所述第二电芯的第二表面和第一电路板之间。
在一些实施例中，所述第一电路板包括相对设置的第一侧面和第二侧面，所述第一极耳设于所述第一侧面，所述第二极耳设于所述第二侧面。
在一些实施例中，所述第一电路板与所述第一电芯的封边形成锐角，所述锐角范围为30-60°。
在一些实施例中，所述电池模组还包括第一绝缘件和第二绝缘件，所述第一绝缘件包覆至少部分所述第一电芯的封边，所述第二绝缘件包覆至少部分所述第二电芯的封边。
在一些实施例中，所述第一绝缘件设有第一开口，所述第一极耳从所述第一开口伸出；所述第二绝缘件设有第二开口，所述第二极耳从所述第二开口伸出。
本申请的实施例还提供一种电池包，包括外壳和上述任一项所述的电池模组，所述电池模组收容于所述外壳。
在一些实施例中，所述电池包还包括第二电路板，所述第二电路板的一端连接所述电池模组的第一电路板，所述第二电路板的另一端伸出所述外壳。
在一些实施例中，所述外壳包括一弧形底板，所述弧形底板的内侧壁设有第一凹槽和第二凹槽，所述电池包还包括第一隔离件和第二隔离件，所述第一隔离件设于所述电池模组的第一电芯和所述第一凹槽之间，所述第二隔离件设于所述电池模组的第二电芯和所述第二凹槽之间。
在一些实施例中，所述第一隔离件覆盖所述第一凹槽，所述第二隔离件覆盖所述第二凹槽。
在一些实施例中，所述弧形底板的圆弧半径为85-110mm。
在一些实施例中，所述外壳还包括侧板和弧形盖板，所述侧板 围绕所述弧形底板设置，所述弧形盖板与所述侧板固定连接，所述弧形盖板的圆弧半径为80-100mm。
在一些实施例中，所述电池包还包括固定件，所述固定件包括第一支架、第二支架和连接部，所述第一支架和所述第二支架分别设置于所述连接部的相对两侧，所述电池模组的第一电芯设于所述第一支架，所述第二电芯设于所述第二支架，所述第一电路板设于所述连接部。
在一些实施例中，所述外壳内设有树脂，用于填充所述外壳和所述电池模组的电芯组件之间的间隙。
在一些实施例中，所述外壳设有注入孔，所述树脂通过低压注塑填充于所述外壳内。
本申请的实施例还提供一种电子装置，所述电子装置包括用电元件和上述任一项所述的电池包，所述用电元件电连接所述电池包。
在一些实施例中，所述电芯为软包电芯，所述极耳的材料为导电金属或合金，如铜、铝、镍、铜镀镍、铝镀镍等。
本申请的实施例还提供一种电子装置，所述电子装置包括用电元件和上述任一项所述的电池包，所述用电元件电连接所述电池包。
上述电池模组的第一电芯相对所述第二电芯倾斜设置，第一电路板设于所述第一电芯和所述第二电芯之间，所述第一电路板相对所述第一电芯倾斜设置，所述第一电路板相对所述第二电芯倾斜设置，通过在第一电芯和第二电芯之间的空间设置第一电路板，充分利用电池内部的空间，有效提高能量密度。进一步的，所述电芯为软包电芯，软包电芯的极耳易于弯折，可以依据电芯和电路板的倾斜的角度，对极耳进行弯折，有利于进一步提供空间利用率。
附图说明
图1为电池包在一实施例中的立体结构示意图。
图2为图1所示电池包的剖面结构示意图。
图3为图1所示电池包中电芯的侧视图。
图4为图3所示电芯的剖面结构示意图。
图5为图2所示电池包中电池模组的结构示意图。
图6为图5所示电池模组的局部结构放大图。
图7为图5所示电池模组的剖面结构示意图。
图8为图7所示电池模组的局部结构放大图。
图9为图5所示电池模组中第一电芯的结构示意图。
图10为图5所示电池模组中第二电芯的结构示意图。
图11为图1所示电池包的侧视图。
图12为图1所示电池包中外壳的部分结构示意图。
图13为电池包在一实施例中的分解结构示意图。
图14为电子装置在一实施例中的结构简图。
主要元件符号说明：
电池模组     100
电芯         10
壳体         101
第一主平面   1011
第二主平面   1012
封边         1013
第一表面     1014
第二表面     1015
电极组件     102
极耳         103
第一电芯     11
第一极耳     113
第一焊接部   1131
第二电芯     12
第二极耳     123
第二焊接部   1231
隔离件       14
第一电路板   20
第一侧面     21
第二侧面     22
第一连接片   30
第一固定部   31
第一连接部   32
第二连接片   40
第二固定部   41
第二连接部   42
绝缘件       50
第一绝缘件   51
第一开口     511
第二绝缘件   52
第二开口     521
第二电路板   60
外壳         70
弧形底板     71
第一凹槽     711
第二凹槽     712
侧板         72
注入孔       721
弧形盖板     73
第一隔离件   81
第二隔离件   82
固定件       90
第一支架     91
第二支架     92
连接部       93
通孔         931
电池包       200
电子装置     300
用电元件     301
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模组，包括电芯组件和第一电路板。所述电芯组件包括多个电芯，所述多个电芯连接于所述第一电路板。所述多个电芯包括第一电芯和第二电芯，所述第一电芯相对所述第二电芯倾斜设置。所述第一电路板设于所述第一电芯和所述第二电芯之间，所述第一电路板相对所述第一电芯倾斜设置，所述第一电路板相对所述第二电芯倾斜设置。
上述电池模组通过在第一电芯和第二电芯之间的空间设置第一电路板，充分利用了电池内部的空间，有效提高能量密度。
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和图2，在一实施例中，电池包200包括电池模组100和外壳70，所述电池模组100收容于所述外壳70。所述电池模组100包括电芯组件和第一电路板20。所述电芯组件包括多个电芯10，所述电芯10连接于所述第一电路板20。
请继续参阅图3和图4，在本申请的实施例中，所述多个电芯10为软包电芯，每一电芯10包括壳体101和收容于所述壳体101的电极组件102。所述电极组件102包括极耳103，所述极耳103延伸出所述壳体101。沿所述电芯10的厚度方向，图4中箭头A指示的方向，所述壳体101包括相对设置的第一主平面1011和第二主平面1012。沿所述电芯10的长度方向，图4中箭头B指示的方向，所述壳体101的一端还设有封边1013，所述极耳103从所述封边1013延伸出所述壳体101。所述壳体101还包括第一表面1014和第二表面1015，所述第一表面1014连接所述封边1013和所述第一主平面1011，所述第二表面1015连接所述封边1013和所述第二主平面1012。沿所述厚度方向，所述第一表面1014的宽度大于所述第二表面1015的宽度。
请参阅图5和图6，在本申请的实施例中，多个电芯10包括第 一电芯11和第二电芯12，所述第一电芯11相对所述第二电芯12倾斜设置。所述第一电芯11与所述第二电芯12的结构大致相同。在其他实施例中，多个电芯10还可以包括第三电芯、第四电芯等，本申请不限定于此。所述第一电路板20设于所述第一电芯11和所述第二电芯12之间。所述第一电路板20相对所述第一电芯11倾斜设置，且所述第一电路板20相对所述第二电芯12倾斜设置，所述电池模组100利用第一电芯11和所述第二电芯12之间倾斜设置后的空间设置第一电路板20，充分利用电池内部的空间，有效提高能量密度。
所述第一电路板20的一端靠近所述第一电芯11的第一表面1014倾斜，所述第一电路板20的相对另一端靠近所述第二电芯12的第一表面1014倾斜。由于第一表面1014的宽度大于所述第二表面1015的宽度，当所述第一电路板20相对的两端均朝向第一表面1014倾斜设置的时候，可以更好的利用第一表面1014较大的宽度设置所述第一电路板20。所述第一电路板20与所述第一电芯11的封边1013形成锐角a，所述锐角a的范围可以依据电芯10的倾斜角度、第一电路板20的倾斜角度进行调整，较佳锐角范围为30-60°。
所述第一电芯11的第一表面1014与所述第二电芯12的第二表面1015相对设置，所述第一电芯11的第二表面1015与所述第二电芯12的第一表面1014相对设置。
请继续参阅图7和图8，所述第一电芯11包括第一极耳113，所述第二电芯12包括第二极耳123，所述第一极耳113和所述第二极耳123相对设置。所述第一电路板20设于所述第一极耳113和所述第二极耳123之间。所述第一极耳113靠近所述第一电芯11的第一表面1014倾斜，所述第二极耳123靠近所述第二电芯12的第二表面1015倾斜。所述第一电路板20包括相对设置的第一侧面21和第二侧面22，所述第一极耳113设于所述第一侧面21，所述第二 极耳123设于所述第二侧面22，所述第一极耳113和所述第二极耳123可以直接焊接于所述第一电路板20，比如通过SMT或DIP方式焊接，或通过其他的连接片连接于所述第一电路板20。所述第一极耳113和所述第二极耳123的材料为导电金属或合金，如铜、铝、镍、铜镀镍、铝镀镍等，所述第一极耳113和所述第二极耳123易于弯折，可以依据电池模组100的需求进行不同角度的弯折，占用较少的空间。
请继续参阅图7和图8，本实施例中，所述电池模组100还包括第一连接片30和第二连接片40。所述第一连接片30用于连接所述第一极耳113和所述第一电路板20，所述第二连接片40用于连接所述第二极耳123和所述第一电路板20。所述第一极耳113包括第一焊接部1131，所述第二极耳123包括第二焊接部1231。所述第一连接片30包括第一固定部31和第一连接部32，所述第一固定部31焊接于所述第一电路板20，所述第一连接部32焊接于所述第一焊接部1131。所述第一焊接部1131设于所述第一固定部31和所述第一连接部32之间。所述第二连接片40包括第二固定部41和第二连接部42，所述第二固定部41焊接于所述第一电路板20，所述第二连接部42焊接于所述第二焊接部1231。所述第二焊接部1231设于所述第二固定部41和所述第二连接部42之间。
为了便于制造电池模组100，在连接电芯10与第一电路板20之前，第一连接片30和第二连接片40为“L”型结构，第一固定部31与第一连接部32大致垂直设置，第二固定部41与第二连接部42大致垂直设置。第一焊接部1131和第二焊接部1231分别与第一连接部32和第二连接部42焊接，所述第一固定部31和所述第二固定部41分别焊接于所述第一电路板20，第一电芯11和第二电芯12垂直于第一电路板20。随后对第一极耳113和第二极耳123进行折弯处理，以使第一焊接部1131夹设于第一固定部31和第一连接部 32之间，第二焊接部1231夹设于第二固定部41和第二连接部42之间，同时第二电芯12相对第一电芯11倾斜设置，第一电路板20相对第一电芯11和第二电芯12倾斜设置。通过设置第一连接片30和第二连接片40，可以更好的利用第一电路板20的空间，例如，所述第一固定部31和所述第二固定部41可以依据第一电路板20的设计焊接于电路板的不同位置，此外，也有利于控制弯折的角度，例如可以在依据需求将第一固定部31与第一连接部32弯折形成不同的夹角。
本实施例中，所述第一固定部31和所述第一连接部32夹持所述第一焊接部1131。所述第一焊接部1131的一个表面与所述第一连接部32接触连接，所述第一焊接部1131相对的另一表面与所述第一固定部31接触连接。所述第二固定部41和所述第二连接部42夹持所述第二焊接部1231，所述第二焊接部1231的一个表面与所述第二连接部42接触连接，所述第二焊接部1231相对的另一表面与所述第二固定部41接触连接。通过接触夹持，可以使第一连接片30和第一焊接部1131固定的更稳定，防止在跌落等情况下，第一连接片30和第一焊接部1131分离，其他例中，所述第一焊接部1131相对的另一表面与所述第一固定部31也可以其他方式固定连接，比如固定胶等。
请参阅图4、图9和图10，所述电池模组100还包括绝缘件50，所述绝缘件50包覆至少部分所述电芯10的封边1013。所述绝缘件50包括第一绝缘件51和第二绝缘件52，所述第一绝缘件51包覆至少部分所述第一电芯11的封边1013，所述第二绝缘件52包覆至少部分所述第二电芯12的封边1013。所述第一绝缘件51设有第一开口511，所述第一极耳113从所述第一开口511伸出。所述第二绝缘件52设有第二开口521，所述第二极耳123从所述第二开口521伸出。绝缘件50一方面可以支撑封边1013，防止其变形，另一方 面可以隔离极耳103，减少短路情况的发生。
请再次参阅图1和图2，所述电池包200还包括第二电路板60，所述第二电路板60的一端连接所述第一电路板20，所述第二电路板60的另一端伸出所述外壳70。在本申请的实施例中，所述第二电路板60为柔性电路板。沿所述电芯组件的长度方向，所述第二电路板60从所述外壳70的一侧伸出。
所述电池包200还包括隔离件14，沿电芯10的厚度方向，所述隔离件14设于所述电芯10的第一主平面1011和第二主平面1012。所述隔离件14包括但不限于泡棉等材料，用于吸收电芯10的膨胀体积。
所述外壳包括一弧形底板71、围绕所述弧形底板71设置的侧板72和一弧形盖板73。所述侧板72与所述弧形底板71为一体成型结构。所述弧形盖板73的侧边与所述侧板72固定连接，固定连接的方式包括但不限于卡接、铆接、焊接、粘接等。为了减少对外壳70的破坏，所述第二电路板60从所述弧形盖板73与所述侧板72之间伸出。请参阅图11，所述弧形底板71的圆弧半径R1为85-110mm，所述弧形盖板73的圆弧半径R2为80-100mm。本实施例中，所述弧形底板71为一体成型的塑胶件，所述弧形盖板73为钢片，所述钢片提高电池包200从外测受冲击的抵抗能力，同时钢片为整体设计避免电池失效过程中对使用者的危害，在一实施例中，所述电池包200适用于头戴式耳机，其中所述弧形盖板73靠近使用者的头部，钢片比塑胶件具有更好的强度，当电池失效时，弧形底板71会先先被损坏，从而保护头部。
请参阅图2和图12，所述弧形底板71的内侧壁设有第一凹槽711和第二凹槽712，分别用于为第一电芯11和第二电芯12提供膨胀空间。所述电池包200还包括第一隔离件81和第二隔离件82，所述第一隔离件81设于第一电芯11和所述第一凹槽711之间，所 述第二隔离件82设于1第二电芯12和所述第二凹槽712之间。所述第一隔离件81覆盖所述第一凹槽711，所述第二隔离件82覆盖所述第二凹槽712。第一隔离件81和第二隔离件82用于支撑第一电芯11和第二电芯12。
请参阅图13，在另一实施例中，所述电池包200的结构与前述实施例大致相同，区别在于，所述电池包200还包括固定电芯组件的固定件90，所述固定件90收容于所述外壳70和电芯组件之间的空间。所述固定件90包括第一支架91、第二支架92和连接部93，所述第一支架91和所述第二支架92分别设置于所述连接部93的相对两侧。所述第一支架91相对所述连接部93倾斜设置，所述第二支架92相对所述连接部93倾斜设置。所述第一电芯11设于所述第一支架91，所述第二电芯12设于所述第二支架92。所述第一电路板20倾斜设于所述连接部93。在其他的实施例中，所述固定件90为填充所述外壳70和电芯组件之间的树脂，所述树脂填充所述外壳70和电芯组件之间的的间隙以固定电芯组件，所述树脂可为塑胶，所述外壳70的侧板72上设有注入孔721，所述树脂通过低压注塑从所述注入孔721填充于所述外壳70内。所述树脂可以从所述通孔931流入第一电芯11、第二电芯12和第一电路板20之间，保证三者之间的间隙能够被填充，填充树脂的电池包200有防水效果，另外，树脂对电芯10也可以形成一定的保护作用，防止电芯10在跌落等情况下损坏。其他实施例中，所述树脂为灌封胶，所述灌封胶通过注入孔721填充于所述外壳70内。其他实施例中，固定件90也可同时包括固定支架和树脂，以实现更好的固定。
请参阅图14，本申请的实施例还提供一种电子装置300，所述电子装置300包括用电元件301和上述任意实施例或实施例组合中的电池包200，所述用电元件301电连接所述电池包200。
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. 一种电池模组，包括：
    电芯组件，包括多个电芯；和
    第一电路板，所述多个电芯连接于所述第一电路板；
    其特征在于，所述多个电芯包括第一电芯和第二电芯，所述第一电芯相对所述第二电芯倾斜设置；
    所述第一电路板设于所述第一电芯和所述第二电芯之间，所述第一电路板相对所述第一电芯倾斜设置，所述第一电路板相对所述第二电芯倾斜设置。
  2. 如权利要求1所述的电池模组，其特征在于，每一所述电芯包括壳体和收容于所述壳体的电极组件，所述电极组件包括极耳；
    沿所述电芯的厚度方向，所述壳体包括相对设置的第一主平面和第二主平面，沿所述电芯的长度方向，所述壳体的一端设有封边，所述极耳从所述封边延伸出所述壳体；
    所述第一电芯包括第一极耳，所述第二电芯包括第二极耳，所述第一极耳和所述第二极耳相对设置；
    所述壳体还包括连接所述封边和所述第一主平面的第一表面，和连接所述封边和所述第二主平面的第二表面，沿所述厚度方向，所述第一表面的宽度大于所述第二表面的宽度；
    所述第一电路板的一端靠近所述第一电芯的第一表面倾斜，所述第一电路板的相对另一端靠近所述第二电芯的第一表面倾斜。
  3. 如权利要求2所述的电池模组，其特征在于，所述第一电路板设于所述第一极耳和所述第二极耳之间。
  4. 如权利要求2或3所述的电池模组，其特征在于，所述第一极耳包括第一焊接部，所述第二极耳包括第二焊接部；
    所述电池模组包括：
    第一连接片，所述第一连接片包括第一固定部和第一连接部， 所述第一固定部焊接于所述第一电路板，所述第一连接部焊接于所述第一焊接部，所述第一焊接部设于所述第一固定部和所述第一连接部之间；
    第二连接片，所述第二连接片包括第二固定部和第二连接部，所述第二固定部焊接于所述第一电路板，所述第二连接部焊接于所述第二焊接部，所述第二焊接部设于所述第二固定部和所述第二连接部之间。
  5. 如权利要求4所述的电池模组，其特征在于，
    所述第一固定部和所述第一连接部夹持所述第一焊接部，所述第一焊接部的一个表面与所述第一连接部接触连接，所述第一焊接部相对的另一表面与所述第一固定部接触连接；
    所述第二固定部和所述第二连接部夹持所述第二焊接部，所述第二焊接部的一个表面与所述第二连接部接触连接，所述第二焊接部相对的另一表面与所述第二固定部接触连接。
  6. 如权利要求4任意一项所述的电池模组，其特征在于，所述第一焊接部设于所述第一电芯的第一表面和第一电路板之间，所述第二焊接部设于所述第二电芯的第二表面和第一电路板之间。
  7. 如权利要求4所述的电池模组，其特征在于，所述第一电路板包括相对设置的第一侧面和第二侧面，所述第一极耳设于所述第一侧面，所述第二极耳设于所述第二侧面。
  8. 如权利要求2所述的电池模组，其特征在于，所述第一电路板与所述第一电芯的封边形成锐角，所述锐角范围为30-60°。
  9. 如权利要求2所述的电池模组，其特征在于，所述电池模组还包括第一绝缘件和第二绝缘件，所述第一绝缘件包覆至少部分所述第一电芯的封边，所述第二绝缘件包覆至少部分所述第二电芯的封边。
  10. 如权利要求9所述的电池模组，其特征在于，所述第一绝缘件设有第一开口，所述第一极耳从所述第一开口伸出；所述第二绝缘 件设有第二开口，所述第二极耳从所述第二开口伸出。
  11. 一种电池包，其特征在于，包括外壳和权利要求1-10任一项所述的电池模组，所述电池模组收容于所述外壳。
  12. 如权利要求11所述的电池包，其特征在于，所述电池包还包括第二电路板，所述第二电路板的一端连接所述电池模组的第一电路板，所述第二电路板的另一端伸出所述外壳。
  13. 如权利要求12所述的电池包，其特征在于，所述外壳包括一弧形底板，所述弧形底板的内侧壁设有第一凹槽和第二凹槽，所述电池包还包括第一隔离件和第二隔离件，所述第一隔离件设于所述电池模组的第一电芯和所述第一凹槽之间，所述第二隔离件设于所述电池模组的第二电芯和所述第二凹槽之间。
  14. 如权利要求13所述的电池包，其特征在于，所述第一隔离件覆盖所述第一凹槽，所述第二隔离件覆盖所述第二凹槽。
  15. 如权利要求13所述的电池包，其特征在于，所述弧形底板的圆弧半径为85-110mm。
  16. 如权利要求13所述的电池包，其特征在于，所述外壳还包括侧板和弧形盖板，所述侧板围绕所述弧形底板设置，所述弧形盖板与所述侧板固定连接，所述弧形盖板的圆弧半径为80-100mm。
  17. 如权利要求11所述的电池包，其特征在于，所述电池包还包括固定件，所述固定件包括第一支架、第二支架和连接部，所述第一支架和所述第二支架分别设置于所述连接部的相对两侧，所述电池模组的第一电芯设于所述第一支架，所述第二电芯设于所述第二支架，所述第一电路板设于所述连接部。
  18. 如权利要求11所述的电池包，其特征在于，所述外壳内设有树脂，用于填充所述外壳和所述电池模组的电芯组件之间的间隙。
  19. 如权利要求18所述的电池包，其特征在于，所述外壳设有注入孔，所述树脂通过低压注塑填充于所述外壳内。
  20. 一种电子装置，其特征在于，所述电子装置包括用电元件和权利要求11-19任一项所述的电池包，所述用电元件电连接所述电池包。
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