WO2021110179A1 - Batterie, ensemble batterie, bloc-batterie et appareil électronique - Google Patents

Batterie, ensemble batterie, bloc-batterie et appareil électronique Download PDF

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Publication number
WO2021110179A1
WO2021110179A1 PCT/CN2021/073452 CN2021073452W WO2021110179A1 WO 2021110179 A1 WO2021110179 A1 WO 2021110179A1 CN 2021073452 W CN2021073452 W CN 2021073452W WO 2021110179 A1 WO2021110179 A1 WO 2021110179A1
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WO
WIPO (PCT)
Prior art keywords
battery
sealing
circuit board
top surface
main body
Prior art date
Application number
PCT/CN2021/073452
Other languages
English (en)
Chinese (zh)
Inventor
黄小钊
李超鹏
韦天华
王华强
Original Assignee
东莞新能德科技有限公司
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
Priority claimed from CN201922179330.2U external-priority patent/CN211404531U/zh
Priority claimed from CN202021257087.8U external-priority patent/CN212625746U/zh
Priority claimed from CN202021254669.0U external-priority patent/CN212907883U/zh
Priority claimed from CN202021338803.5U external-priority patent/CN212625976U/zh
Priority claimed from CN202021351823.6U external-priority patent/CN212625794U/zh
Application filed by 东莞新能德科技有限公司 filed Critical 东莞新能德科技有限公司
Priority to CN202180006949.0A priority Critical patent/CN114747070B/zh
Publication of WO2021110179A1 publication Critical patent/WO2021110179A1/fr

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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
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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

  • This application relates to the field of batteries, in particular to batteries, battery components, battery packs, and electronic devices using the battery components or batteries.
  • lithium-ion batteries are widely used in portable electronic devices such as mobile phones, digital video cameras, and laptop computers due to their advantages such as high energy density, high cycle life, and no memory effect.
  • the battery assembly includes a battery core body, an encapsulation film, and tabs.
  • the packaging film includes a main body, a top sealing edge and a side sealing edge.
  • the main body part covers the main body of the battery.
  • the main body portion includes a first surface, a second surface, a top wall, and a side wall, the first surface and the second surface are disposed opposite to each other, and the top wall connects the first surface and the second surface ,
  • the side wall connects the first surface, the second surface and the top wall.
  • the top sealing edge is arranged on the top wall and extends toward the first surface.
  • the side sealing edge is arranged on the side wall and extends toward the second surface.
  • the tab includes a first end and a second end opposite to each other, the first end is connected to the battery core body, and the second end is located outside the packaging film.
  • the battery assembly further includes a wire and/or a flexible circuit board, and the wire and/or the flexible circuit board is welded to the second end.
  • the top sealing edge is located between the first surface and the second surface.
  • the side sealing edge is located between the first surface and the second surface.
  • the tab is located between the first surface and the second surface.
  • an electronic device includes the battery assembly described above.
  • the above-mentioned battery assembly of the present application has a simple structure, and the top sealing edge and the side sealing edge extend in opposite directions, so that the thickness of the connecting portion stack in the battery assembly is reduced, thereby reducing the volume of the battery assembly, and at the same time It also reduces the folding stress and reduces the probability of damage to the connecting part.
  • Wires and/or flexible circuit boards are welded on the tabs of the battery assembly to facilitate flexible connection of external electronic components, thereby facilitating the reduction of the volume of the battery assembly.
  • the top sealing edge, the side sealing edge and/or the tabs are located between the first surface and the second surface, which can further reduce the volume of the battery assembly.
  • the battery includes a battery cell and a circuit board.
  • the battery cell includes a packaging bag and a tab.
  • the packaging bag includes a main body and a top sealing edge, the main body includes a top surface, the top sealing edge extends from the top surface, and the top sealing edge is bent toward the main body and covers a portion The top surface.
  • the tabs extend from the top sealing edge.
  • the circuit board is arranged on the top surface. The circuit board is provided with an avoidance groove at a position corresponding to the tab, and the tab is bent toward the avoidance slot and is electrically connected to the circuit board.
  • the circuit board includes a lower surface facing the top surface and an upper surface facing away from the top surface; the escape groove penetrates the upper surface and the lower surface, and the pole The ear and the circuit board are electrically connected to the upper surface.
  • the projections of the tabs on the top surface are all located in the top surface.
  • the battery cell includes two tabs, and the circuit board is provided with a avoidance slot at a position corresponding to each tab.
  • the two avoidance slots are in communication with each other.
  • a first sealing member and a second sealing member are arranged in the top sealing edge, and the first sealing member is used to isolate the top sealing edge from one of the tabs, and The second sealing element is used to isolate the top sealing edge from the other tab, the first sealing element is located in one of the avoiding grooves, and the second sealing element is located in the other avoiding groove, wherein, the projections of the first sealing member, the second sealing member and the circuit board on the top surface do not overlap.
  • the battery pack as a solution of the present application includes a circuit board and a plurality of cells arranged horizontally.
  • Each of the batteries includes a packaging bag and a tab.
  • the packaging bag includes a main body and a top sealing edge, the main body includes a top surface, the top sealing edge extends from the top surface, and the top sealing edge is bent toward the main body and covers a portion The top surface.
  • the tabs extend from the top sealing edge; the circuit board is arranged on a surface formed by the top surfaces of the plurality of horizontally arranged electric cores.
  • the circuit board is provided with an avoidance groove at a position corresponding to the tab of each battery core, and the tab is bent toward the avoidance slot and is electrically connected to the circuit board.
  • the projections of the tabs on each battery cell on the top surface of the battery cell are all located in the top surface.
  • the electronic device as a solution of the present application includes the battery as described above.
  • the battery pack includes a plurality of batteries as described above, and the plurality of batteries are arranged vertically or stacked.
  • the above-mentioned battery in this application utilizes the design of the avoidance groove to provide bending space for the tabs, avoiding part of the tabs in the bending area from protruding relative to the battery core, so as to improve the battery
  • the space utilization rate in the thickness direction saves the packaging space of the battery, thereby providing more space for the battery core, thereby achieving the purpose of increasing the battery capacity.
  • the battery includes a battery core and tabs electrically connected to the battery core.
  • the battery cell includes a packaging bag, the packaging bag includes a main body portion and a top seal portion, the main body portion includes a top surface, the top seal portion extends from the top surface and is folded toward the top surface, so The tabs extend from the top seal part.
  • the battery further includes an insulating member, the insulating member including a built-in part located in the top sealing part and an extension part extending outside the top sealing part, and the tabs are penetrated through the insulating part to communicate with the The top seal part is isolated, and the extension part is connected to the built-in part and is bent toward the top seal part.
  • the extension portion includes two corner portions respectively located on both sides of the tab, and both of the corner portions are provided with a notch structure.
  • the extended portion forms the notch structure by cutting the corner portion or folding the corner portion.
  • the intersection line between the notch structure and the extension part is an arc, a diagonal line or a polyline.
  • the notch structure and the side edge of the extension part intersect at a point A
  • the notch structure and the top edge of the extension part intersect at a point B
  • the angle ⁇ formed by the connecting line of B and the side of the extension part satisfies: 110° ⁇ 160°.
  • the distance D from the intersection point C of the tab and the extension part to the point B is 0.1 mm-1 mm.
  • the top seal portion includes two oppositely arranged first and second sealing portions, and a third sealing portion connected between the first and second sealing portions
  • the first sealing part and the second sealing part are respectively folded toward the third sealing part, the third sealing part is folded toward the top surface, and the built-in part is located in the third sealing part.
  • the battery further includes a circuit board electrically connected to the tabs, and the circuit board is disposed on a surface formed by a part of the top surface and a part of the top seal portion.
  • the circuit board includes a flexible circuit board and a reinforcing plate disposed on the flexible circuit board facing the top surface, and the reinforcing plate is disposed on part of the third sealing part and part
  • the top surface constitutes a surface
  • the reinforcing plate includes a first surface facing the first sealing portion and a second surface facing the second sealing portion, and the first surface is recessed inward to form a first surface
  • the second surface is recessed inward to form a second accommodating space
  • part of the first sealing part is accommodated in the first accommodating space
  • part of the second sealing part is accommodated in the second accommodating space.
  • the electronic device as a solution of the present application includes the battery as described above.
  • the above-mentioned battery in this application uses the design of the notch structure to avoid the problem that the extension portion protrudes from the battery after bending, improves the space utilization rate of the battery in the thickness direction, and saves the packaging space of the battery. So as to provide more space for the battery cell, and then achieve the purpose of increasing the battery capacity.
  • the battery includes a battery cell.
  • the battery cell includes a packaging bag.
  • the packaging bag includes a main body part, a top sealing part and at least one side sealing part.
  • the main body portion includes a top surface, a bottom surface opposite to the top surface, and a side surface connected between the top surface and the bottom surface, and the top seal portion extends from the top surface.
  • the side seal portion extends from the side surface and is connected to the top seal portion, and the side seal portion extends outward in the length direction of the battery.
  • a first notch is provided at the intersection of the top sealing part and the side sealing part, and the side sealing part is folded toward the side surface along the connecting edge where the side sealing part and the main body part intersect.
  • the top seal portion and the intersection of the side seal portion and the top seal portion are folded toward the top surface, and the projection of the top seal portion on the plane where the top surface of the battery is located is all located in the Within the range of the top surface.
  • the side sealing portion includes a corner portion close to the first gap, and the corner portion is folded toward the top sealing portion.
  • the side sealing portion includes a corner portion close to the first gap, and the corner portion is provided with a second gap.
  • the battery cell further includes an electrode assembly and tabs, the electrode assembly is housed in the main body, and the tabs are electrically connected to the electrode assembly and are sealed by the top seal. Extend out.
  • the electronic device as a solution of the present application includes the battery as described above.
  • a first notch is provided at the intersection of the top sealing part and the side sealing part to prevent the folded top sealing part and the side sealing part from protruding relative to the battery, thereby saving the packaging space of the battery.
  • the top seal part and the side seal part of the battery of the present application will not protrude relative to the battery after being folded.
  • it also reduces the space occupancy rate of the battery in the battery compartment, and improves the space utilization rate of the battery compartment.
  • the battery includes a battery core and a circuit board electrically connected to the battery core.
  • the battery cell includes a packaging bag.
  • the packaging bag includes a main body portion and a top seal portion, the main body portion includes a top surface, and the top seal portion extends from the top surface and is folded toward the top surface.
  • the top seal portion includes two oppositely arranged first and second sealing portions, and a third sealing portion connected between the first and second sealing portions, the first and second sealing portions The second sealing portion is respectively folded toward the third sealing portion, and the circuit board is disposed on a surface formed by a part of the third sealing portion and a part of the top surface.
  • the projections of the first sealing portion and the second sealing portion on the plane where the top surface is located do not overlap with the projections of the circuit board or the reinforced area in the circuit board on the plane where the top surface is located.
  • the first sealing portion includes a first corner portion opposite to the circuit board, and the second sealing portion includes a second corner portion opposite to the circuit board.
  • the first corner portion is provided with a first crease
  • the second corner portion is provided with a second crease
  • the first corner portion is folded along the one crease
  • the second corner portion Fold along the second crease.
  • the first sealing portion is provided with a first gap opposite to the circuit board, and the second sealing portion is provided with a second gap opposite to the circuit board.
  • the circuit board includes a first side, a second side facing away from the first side, a third side, and a fourth side facing away from the third side.
  • the first side And the second side surface are respectively connected between the third side surface and the fourth side surface.
  • the first side surface is provided with a third notch
  • the second side surface is provided with a fourth notch
  • part of the first sealing part is correspondingly received in the third notch
  • part of the second sealing part corresponds to Received in the fourth notch
  • a third notch is provided at the connection between the third side and the first side
  • a fourth notch is provided at the connection between the third side and the second side
  • Part of the first sealing part is correspondingly received in the third notch
  • part of the second sealing part is correspondingly received in the fourth notch.
  • the circuit board includes a flexible circuit board and a reinforcing plate disposed on the side of the flexible circuit board facing the top surface, and the area corresponding to the reinforcing plate is the area of the circuit board. Reinforcing area, the reinforcing plate is provided on a surface formed by part of the third sealing part and part of the top surface, and the flexible circuit board includes a first end facing the first sealing part and The second end of the second sealing portion, wherein, in the width direction of the battery, the first end protrudes relative to the reinforcing plate to form a first container together with the reinforcing plate. The second end portion protrudes relative to the reinforcing plate to form a second accommodating space together with the reinforcing plate, and part of the first sealing portion is accommodated in the first accommodating space, Part of the second sealing portion is accommodated in the second accommodating space.
  • the electronic device as a solution of the present application includes the battery as described above.
  • the structure of the first sealing part and the second sealing part, the structure of the circuit board, or the structure of the reinforcing plate avoid the first sealing part and the structure of the reinforcing plate.
  • the overlapping arrangement of the second sealing portion and the circuit board causes the problem of wasting space in the length direction of the battery, which improves the space utilization rate of the battery in the length direction, thereby achieving the purpose of increasing the battery capacity.
  • FIG. 1 is a three-dimensional schematic diagram of a partial structure of a battery assembly according to an embodiment of the application.
  • Fig. 2 is a partial enlarged schematic diagram of a part of the structure of the battery assembly shown in Fig. 1.
  • FIG. 3 is a three-dimensional schematic diagram of a partial structure of a battery assembly according to another embodiment of the application.
  • FIG. 4 is a partial enlarged schematic diagram of a part of the structure of the battery assembly shown in FIG. 3.
  • FIG. 5 is a three-dimensional schematic diagram of a partial structure of a battery assembly according to another embodiment of the application.
  • FIG. 6 is a three-dimensional schematic diagram of a battery assembly according to an embodiment of the application.
  • FIG. 7 is a three-dimensional schematic diagram of a battery assembly according to another embodiment of the application.
  • FIG. 8 is a three-dimensional schematic diagram of a battery assembly according to another embodiment of this application.
  • FIG. 9 is a three-dimensional schematic diagram of a battery assembly according to still another embodiment of this application.
  • FIG. 10 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 11 is a schematic diagram of the structure of a battery cell according to an embodiment of the application.
  • Fig. 12 is a side view of the battery shown in Fig. 10.
  • Fig. 13 is a top view of the battery shown in Fig. 10.
  • Fig. 14 is a schematic diagram of the circuit board, the first electrical connection member and the second electrical connection member shown in Fig. 10.
  • FIG. 15 is a schematic structural diagram of a battery according to another embodiment of the application.
  • Fig. 16 is a top view of the battery shown in Fig. 15.
  • Fig. 17 is a schematic diagram of the circuit board, the first electrical connection member and the second electrical connection member shown in Fig. 15.
  • FIG. 18 is a schematic diagram of the structure of a battery pack according to an embodiment of the application.
  • FIG. 19 is a schematic structural diagram of a battery pack according to another embodiment of the application.
  • FIG. 20 is a schematic structural diagram of a battery pack according to another embodiment of the application.
  • FIG. 21 is a schematic structural diagram of a battery pack according to another embodiment of the application.
  • FIG. 22 is a schematic structural diagram of a battery pack according to another embodiment of the application.
  • FIG. 23 is a schematic diagram of modules of an electronic device according to an embodiment of the application.
  • FIG. 24 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 25 is a schematic front view of the battery of FIG. 24.
  • FIG. 25 is a schematic front view of the battery of FIG. 24.
  • Figure 26 is an enlarged view of II shown in Figure 24.
  • Fig. 27 is a top view of the battery shown in Fig. 24 when the tabs are not bent.
  • FIG. 28 is a schematic diagram of the structure of a battery according to another embodiment of the application.
  • FIG. 29 is a schematic structural diagram of a battery according to another embodiment of the application.
  • FIG. 30 is a schematic structural diagram of a battery according to another embodiment of the application.
  • FIG. 31 is a schematic structural diagram of a battery according to another embodiment of the application.
  • FIG. 32 is a schematic structural diagram of a battery according to another embodiment of the application.
  • FIG. 33 is a schematic structural diagram of a battery according to another embodiment of the application.
  • Fig. 34 is a top view of the battery shown in Fig. 33;
  • FIG. 35 is a schematic diagram of the structure of the circuit board shown in FIG. 33.
  • FIG. 35 is a schematic diagram of the structure of the circuit board shown in FIG. 33.
  • Fig. 36 is a top view of a battery according to an embodiment of the application.
  • Fig. 37 is an expanded view of the battery shown in Fig. 36;
  • FIG. 38 is a schematic diagram of the structure of the battery after folding the side seal portion shown in FIG. 36.
  • FIG. 38 is a schematic diagram of the structure of the battery after folding the side seal portion shown in FIG. 36.
  • Fig. 39 is a schematic diagram showing the structure of the battery shown in Fig. 38 from another perspective.
  • FIG. 40 is a schematic diagram of an electrode assembly according to an embodiment of the application.
  • FIG. 41 is a top view of a battery according to another embodiment of the application.
  • FIG. 42 is an expanded view of a battery according to another embodiment of the application.
  • Fig. 43 is an expanded view of a battery according to another embodiment of the application.
  • Fig. 44 is an expanded view of a battery according to another embodiment of the application.
  • FIG. 45 is an expanded view of a battery according to another embodiment of the application.
  • FIG. 46 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 47 is a schematic diagram of the structure of a battery cell according to an embodiment of the application.
  • Fig. 48 is an expanded schematic diagram of the battery cell shown in Fig. 47.
  • Fig. 49 is a top view of the battery shown in Fig. 46;
  • FIG. 50 is a schematic diagram of the structure of the circuit board shown in FIG. 46.
  • FIG. 50 is a schematic diagram of the structure of the circuit board shown in FIG. 46.
  • FIG. 51 is a top view of a battery according to an embodiment of the application.
  • Fig. 52 is an expanded schematic diagram of the battery cell shown in Fig. 51.
  • Fig. 53 is a top view of the battery cell shown in Fig. 51;
  • Fig. 54 is an expanded view of a battery cell according to an embodiment of the application.
  • FIG. 55 is a top view of a battery according to another embodiment of the application.
  • Fig. 56 is a top view of a battery according to another embodiment of the application.
  • Fig. 57 is a top view of a battery according to another embodiment of the application.
  • Fig. 58 is a top view of a battery according to another embodiment of the application.
  • FIG. 59 is a schematic diagram of modules of an electronic device according to an embodiment of the application.
  • Encapsulation film 30 empty slot 13 second missing part 1142
  • the first turning area 371 Top seal department 113a Battery 10d, 20a
  • the second turning area 373 The first sealing department 1131 The first gap 1134
  • Lead wire 60 60 Polar ears 12a Second corner position 1137
  • the present application discloses a battery assembly 100 including a battery core body (not shown), a packaging film 30 and a tab 50.
  • the packaging film 30 includes a main body 31, a top sealing edge 33 and a side sealing edge 35. The top sealing edge 33 and the side sealing edge 35 are respectively connected to the main body portion 31.
  • the main body portion 31 covers the battery core main body.
  • the tab 50 includes a first end and a second end 53 opposite to each other. The first end is connected to the main body of the cell, and the second end 53 is located outside the packaging film 30.
  • the main body portion 31 includes a first surface 311, a second surface 313, a top wall 315 and a side wall 317.
  • the first surface 311 is opposite to the second surface 313, the top wall 315 connects the first surface 311 and the second surface 313, and the side wall 317 connects the first surface 311, The second surface 313 and the top wall 315.
  • the top sealing edge 33 is disposed on the top wall 315, and the top sealing edge 33 extends from the top wall 315 toward the first surface 311.
  • the side sealing edge 35 is disposed on the side wall 317, and the side sealing edge 35 extends from the side wall 317 toward the second surface 313.
  • the packaging film 30 further includes a connecting portion 37 connecting the top sealing edge 33 and the side sealing edge 35.
  • the connecting portion 37 includes a first turning area 371 and a second turning area 373 connecting the first turning area 371.
  • the first turning area 371 includes a first connecting end 372, the first connecting end 372 is connected to the top sealing edge 33, the second turning area 373 includes a second connecting end 374, the second connecting The end 374 is connected to the side sealing edge 35.
  • the second turning area 373 is bent from the second connecting end 374 on the side of the side sealing edge 35 away from the side wall 317.
  • the included angle between the second turning area 373 and the side sealing edge 35 is less than 90°.
  • the first turning area 371 is bent from the first connecting end 372 toward the side wall 317.
  • the first turning area 371 is bent from the first connecting end 372 on the side of the top sealing edge 33 away from the top wall 315.
  • the included angle between the first turning area 371 and the top sealing edge 33 is less than 90°.
  • the second turning area 373 is bent from the second connecting end 374 toward the top wall 315.
  • the battery assembly 100 includes both of FIG. 2 and FIG. 4 at the same time. That is, the connecting portion 37 of one of the side sealing edges 35 and the top sealing edge 33 is arranged as shown in FIG. 2, the second turning area 373 is bent from the second connecting end 374 on the side The side seal 35 is away from the side wall 317. Wherein, the included angle between the second turning area 373 and the side sealing edge 35 is less than 90°, and the first turning area 371 is bent from the first connecting end 372 toward the side wall 317; and The arrangement of the connecting portion 37 of the other side sealing edge 35 and the top sealing edge 33 is shown in FIG.
  • the first turning area 371 is bent from the first connecting end 372 to the top sealing edge 33 is away from the side of the top wall 315.
  • the included angle between the first turning area 371 and the top sealing edge 33 is less than 90°
  • the second turning area 373 is bent from the second connecting end 374 toward the top wall 315.
  • the top sealing edge 33 is located between the first surface 311 and the second surface 313, that is, the top sealing edge 33 does not protrude from the first surface 311, so as to reduce the The volume of the battery pack 100. In other embodiments, the top sealing edge 33 may also protrude from the first surface 311.
  • the side sealing edge 35 is located between the first surface 311 and the second surface 313, that is, the side sealing edge 35 does not protrude from the second surface 313, so as to reduce the The volume of the battery pack 100.
  • the side sealing edge 35 may also protrude from the second surface 313.
  • the tab 50 can extend from the top sealing edge 33 or from the side sealing edge 35. In the present application, further description will be made by taking the protruding tab 50 from the top sealing edge 33 as an example.
  • the part of the tab 50 located outside the packaging film 30 is perpendicular to the top wall 315.
  • the part of the tab 50 located outside the packaging film 30 can also be arranged parallel to the top wall 315.
  • the part of the tab 50 located outside the packaging film 30 can also be arranged at other angles to the top wall 315.
  • the tab 50 is located between the first surface 311 and the second surface 313, that is, the tab 50 does not protrude from the first surface 311 or the second surface 313, so that In order to reduce the volume of the battery assembly 100.
  • the battery assembly 100 further includes a wire 60 or/and a flexible circuit board 70, the wire 60 or/and the flexible circuit board 70 and the second end 53 welding to achieve electrical connection.
  • the welding may be laser welding, ultrasonic welding or hot pressure welding.
  • the end of the wire 60 connected to the second end 53 is flat to facilitate welding.
  • the end of the wire 60 away from the second end 53 is provided with solder (such as solder paste, not shown) for electrical connection with other electronic components by thermal compression welding.
  • solder such as solder paste, not shown
  • the end of the wire 60 away from the second end 53 is provided with an electrical connector 61 for electrical connection with other electronic components.
  • the end of the flexible circuit board 70 away from the second end 53 is provided with a gold finger 71 for electrical connection with other electronic components.
  • the end of the flexible circuit board 70 away from the second end 53 is provided with an electrical connector 73 for electrical connection with other electronic components.
  • a conductive sheet may be further provided between the second end 53 of the tab 50 and the wire 60 and/or the second end 53 of the tab 50 and the flexible circuit board 70 ( (Not shown in the figure), the conductive sheet electrically connects the tab 50 and the wire 60 and/or electrically connects the tab 50 and the flexible circuit board 70.
  • the conductive sheet is laser welding or ultrasonic welding.
  • a protective plate ( Picture not shown).
  • the protection board electrically connects the tab 50 and the wire 60 and/or electrically connects the tab 50 and the flexible circuit board 70.
  • the protection board is provided with components, such as MOS, control chip (control IC) and so on.
  • the above-mentioned battery assembly 100 is applied to an electronic device (not shown).
  • the electronic device can be, but is not limited to, a mobile phone, a computer, an electric toy, etc.
  • the electronic device further includes an external electronic component (not shown), and the external electronic component is electrically connected to the wire 60 and/or the flexible circuit board 70.
  • the external electronic component is thermally welded to the solder on the wire 60 or connected to the electrical connector 61 on the wire 60.
  • the external electronic component is connected to the golden finger 71 of the flexible circuit board 70 or is connected to the electrical connector 73 of the flexible circuit board 70.
  • the above-mentioned battery assembly 100 of the present application has a simple structure.
  • the top sealing edge 33 and the side sealing edge 35 extend in opposite directions, so that the thickness of the stack of the connecting portion 37 in the battery assembly 100 is reduced, thereby reducing the battery
  • the volume of the component 100 also reduces the folding stress, and reduces the probability of damage to the connecting portion 37 by folding.
  • the tabs 50 of the battery assembly 100 are welded with wires 60 and/or flexible circuit boards 70 to facilitate flexible connection of external electronic components, thereby facilitating the reduction of the volume of the battery assembly 100.
  • the top sealing edge 33, the side sealing edge 35 and/or the tab 50 are located between the first surface 311 and the second surface 313, which can further reduce the size of the battery assembly 100 volume of.
  • the battery 10 includes a battery cell 11 and a circuit board 12. Please refer to FIG. 21 together.
  • the battery cell 11 includes a packaging bag 111 and a tab 112.
  • the packaging bag 111 includes a main body 1111 and a top sealing edge 1112.
  • the main body portion 1111 includes a top surface 1113.
  • the top sealing edge 1112 extends from the top surface 1113.
  • the top sealing edge 1112 is bent toward the main body portion 1111 and covers a part of the top surface 1113.
  • the tab 112 extends from the top sealing edge 1112.
  • the circuit board 12 is disposed on the top surface 1113.
  • the circuit board 12 is provided with an escape slot 13 at a position corresponding to the tab 112.
  • the tab 112 is bent toward the avoiding groove 13 and is electrically connected to the circuit board 12.
  • the design of the avoidance groove 13 in the present application provides a bending space for the tab 112, and avoids the bending of a portion of the tab 112 relative to the electrical
  • the core 11 protrudes to improve the space utilization of the battery 10 in the thickness direction (ie the X-axis direction) and save the packaging space of the battery 10, thereby providing more space for the battery core 11, thereby achieving the improvement of battery capacity purpose.
  • the circuit board 12 includes a lower surface 121 facing the top surface 1113 and an upper surface 122 facing away from the top surface 1113.
  • the avoidance groove 13 penetrates the upper surface 122 and the lower surface 121.
  • the tab 112 and the circuit board 12 are electrically connected to the upper surface 122.
  • the projections of the tab 112 on the top surface 1113 are all located in the top surface 1113. That is, the part of the tab 112 in the bending area A does not protrude from the battery core 11, which improves the space utilization of the battery 10 in the thickness direction (that is, the X-axis direction), and saves the packaging of the battery 10 Space, thereby providing more space for the battery cell 11, thereby achieving the purpose of increasing the battery capacity.
  • the battery cell 11 includes two tabs 112.
  • the circuit board 12 is provided with a avoidance slot 13 corresponding to each of the tabs 112.
  • the two avoidance slots 13 are not connected to each other.
  • the two tabs 112 are defined as a first tab 112c and a second tab 112d
  • the two avoidance grooves 13 are defined as a first avoidance groove 13a and a second avoidance groove 13b.
  • the first avoidance groove 13a and the second avoidance groove 13b communicate with each other.
  • the top sealing edge 1112 is provided with a first sealing member 113 and a second sealing member 114.
  • the first sealing member 113 is used to isolate the top sealing edge 1112 and the first tab 112c
  • the second sealing member 114 is used to isolate the top sealing edge 1112 and the second tab 112d.
  • the first sealing member 113 is located in the first avoiding groove 13a
  • the second sealing member 114 is located in the second avoiding groove 13b.
  • the projections of the first sealing member 113, the second sealing member 114 and the circuit board 12 on the top surface 1113 do not overlap.
  • the design of the avoidance groove in this application provides a receiving space for the first sealing member 113 and the second sealing member 114, avoiding the first sealing member 113, the circuit board 12, and the second sealing member 113 and the second sealing member 114.
  • the sealing member 114 and the circuit board 12 are overlapped in the length direction of the battery 10 (ie, the Y-axis direction), so as to effectively improve the space utilization of the battery 10 in the length direction.
  • the layout of the circuit board 12 and the first sealing member 113 and the second sealing member 114 is optimized by using the design of the avoidance groove to save the packaging of the battery 10 Space, thereby providing more space for the battery cell 11, thereby achieving the purpose of increasing the battery capacity.
  • the upper surface 122 is provided with a first electrical connector 123 and a second electrical connector 124.
  • the first electrical connector 123 is electrically connected to the first tab 112c
  • the second electrical connector 124 is electrically connected to the second tab 112d.
  • an external component 125 is provided on the circuit board 12.
  • the external component 125 is electrically connected to the circuit board 12.
  • the external part 34 is not limited to a flexible circuit board or a terminal wire.
  • the present application also provides a battery pack 20.
  • the battery pack 20 includes a plurality of the batteries 10 described above.
  • a plurality of the batteries 10 are arranged vertically or stacked.
  • a battery 10 includes a battery cell 11 and a circuit board 12.
  • the battery cell 11 includes a packaging bag 111, a first tab 112c, and a second tab 112d.
  • the packaging bag 111 includes a main body 1111 and a top sealing edge 1112.
  • the main body portion 1111 includes a top surface 1113, a bottom surface 1114 facing away from the top surface 1113, and a side surface 1115 connected between the top surface 1113 and the bottom surface 1114.
  • the main body portion 1111 has a rectangular parallelepiped structure.
  • the main body portion 1111 is not limited to a rectangular parallelepiped structure, and may also be a columnar structure or the like.
  • the top sealing edge 1112 extends from the top surface 1113 and is bent toward the main body portion 1111 to cover part of the top surface 1113.
  • the first tab 112c and the second tab 112d extend from the top sealing edge 1112, respectively.
  • the polarity of the first tab 112c is different from the polarity of the second tab 112d.
  • the cell 11 further includes an electrode assembly (not shown in the figure) and electrolyte (not shown in the figure).
  • the electrode assembly and the electrolyte are contained in the main body 1111.
  • the first tab 112c and the second tab 112d are respectively electrically connected to the electrode assembly.
  • the electrode assembly may be a common structure in the prior art.
  • the electrode assembly includes a positive electrode sheet, a separator film, and a negative electrode sheet.
  • the positive electrode sheet, the separator film and the negative electrode sheet are wound or laminated to form the electrode assembly.
  • the first tab 112c is electrically connected to the positive electrode sheet
  • the second tab 112d is electrically connected to the negative electrode sheet.
  • the circuit board 12 is disposed on the top surface 1113.
  • the circuit board 12 includes a lower surface 121 facing the top surface 1113 and an upper surface 122 facing away from the top surface 1113.
  • the upper surface 122 is provided with a first electrical connector 123 and a second electrical connector 124.
  • the circuit board 12 is provided with a first avoidance slot 13a at a position corresponding to the first tab 112c, and the circuit board 12 is provided with a second avoidance slot 13a at a position corresponding to the second tab 112d 13b.
  • the first tab 112c is bent toward the first avoiding groove 13a, and is electrically connected to the first electrical connector 123.
  • the second tab 112d is bent toward the second avoidance groove 13b, and is electrically connected to the second electrical connector 124.
  • the first avoidance groove 13a and the second avoidance groove 13b are not connected to each other.
  • the first relief groove 13a penetrates the upper surface 122 and the lower surface 121
  • the second relief groove 13b penetrates the upper surface 122 and the lower surface 121 .
  • Embodiment 1.1 referring to FIG. 13, the projections of the first tab 112c and the second tab 112d on the top surface 1113 are all located in the top surface 1113.
  • the top sealing edge 1112 is provided with a first sealing member 113 and a second sealing member 114.
  • the first sealing member 113 is used to isolate the top sealing edge 1112 and the first tab 112c
  • the second sealing member 114 is used to isolate the top sealing edge 1112 and the second tab 112d.
  • the first sealing member 113 is located in the first avoiding groove 13a
  • the second sealing member 114 is located in the second avoiding groove 13b.
  • the projections of the first sealing member 113, the second sealing member 114 and the circuit board 12 on the top surface 1113 do not overlap.
  • the difference between the embodiment 1.2 and the embodiment 1.1 is that the first escape groove 13 a and the second escape groove 13 b in the embodiment 1.2 communicate with each other.
  • a battery pack 20 includes two batteries 10 as described in Example 1.1.
  • the two batteries 10 are stacked.
  • Embodiment 1.4 the difference between Embodiment 1.4 and Embodiment 1.3 is that the two batteries 10 in Embodiment 1.4 are arranged vertically.
  • a battery pack 20 includes two batteries 10 as described in Embodiment 1.2.
  • the two batteries 10 are stacked.
  • Embodiment 1.6 differs from Embodiment 1.5 in that the two batteries 10 in Embodiment 1.6 are arranged vertically.
  • the present application also provides a battery pack 300.
  • the battery pack 300 includes a circuit board 310 and a plurality of the battery cells 11 arranged horizontally. Please refer to FIG. 21 together.
  • the circuit board 310 is disposed on a surface formed by the top surface 1113 of the plurality of cells 11 arranged horizontally.
  • the circuit board 310 is provided with an escape slot 32 corresponding to the position of the tab 112 of each battery core 11.
  • the tab 112 is bent toward the avoiding groove 13 and is electrically connected to the circuit board 310.
  • the projections of the tab 112 on each battery cell 11 on the top surface 1113 of the battery cell 11 where it is located are all located in the top surface 1113.
  • first sealing member 113 and the second sealing member 114 in each top sealing edge 1112 are respectively located in the corresponding escape groove 32.
  • the avoidance groove 32 penetrates the circuit board 310.
  • the surface of the circuit board 310 facing away from the battery core 11 is provided with an electrical connector 33 a.
  • the electrical connector 33a is electrically connected to the tab 112.
  • an external component 34 is also provided on the circuit board 310.
  • the external component 34 is electrically connected to the circuit board 310.
  • the external part 34 is not limited to a flexible circuit board or a terminal wire.
  • the battery pack 300 includes the circuit board 310 and two battery cells 11.
  • the two batteries 11 are arranged horizontally.
  • the present application also provides an electronic device 100a.
  • the electronic device 100a includes the battery 10 described above.
  • the electronic device 100a may be a mobile electronic device, an energy storage device, an electric vehicle, a hybrid electric vehicle, and the like.
  • the mobile electronic device may be a mobile phone, a wearable electronic device, a tablet computer, a notebook computer, and the like.
  • the present application also discloses a battery 10a.
  • the battery 10a includes a battery core 11 and tabs 12a electrically connected to the battery core 11.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a and a top seal 113a.
  • the main body 112a includes a top surface 1121.
  • the top sealing portion 113 a extends from the top surface 1121 and is folded toward the top surface 1121.
  • the tab 12a extends from the top seal portion 113a.
  • the battery 10a further includes an insulating member 130.
  • the insulating member 130 includes a built-in portion 131 located in the top seal portion 113a, and an extension portion 132 extending to the outside of the top seal portion 113a.
  • the tab 12a passes through the insulating member 130 to be isolated from the top seal portion 113a.
  • the extension portion 132 is connected to the built-in portion 131 and is bent toward the top seal portion 113a.
  • the extension portion 132 includes two corner portions 1321 respectively located on two sides of the tab 12a.
  • a notch structure 1322 is provided on the two corner portions 1321.
  • the design of the notch structure 1322 in this application avoids the problem that the extension portion 132 protrudes relative to the battery 10a after bending, improves the space utilization of the battery 10a in the thickness direction (that is, the X-axis direction), and saves This reduces the packaging space of the battery 10a, thereby providing more space for the battery core 11, thereby achieving the purpose of increasing the battery capacity.
  • the insulating member 130 is lug glue.
  • the extension portion 132 is formed by cutting the corner portion 1321 or folding the corner portion 1321 to form the notch structure 1322.
  • the intersection line 133 of the notch structure 1322 and the extension portion 132 is an arc, an oblique line or a polyline.
  • the notch structure 1322 and the side 1323 of the extension portion 132 intersect at point A, and the notch structure 1322 and the top edge of the extension portion 132 1324 intersects at point B.
  • the angle ⁇ formed by the line between the point A and the point B and the side 1323 of the extension portion 132 satisfies: 110° ⁇ 160°.
  • the distance D from the intersection point C of the tab 12a and the extension portion 132 to the point B is 0.1 mm-1 mm.
  • the top seal portion 113a includes two oppositely disposed first and second seal portions 1131 and 1132, and connected to the first and second seal portions 1131 and 1132. Between the third sealing portion 1133. The first sealing portion 1131 and the second sealing portion 1132 are respectively folded toward the third sealing portion 1133. The third sealing portion 1133 is folded toward the top surface 1121. The built-in portion 131 is located in the third sealing portion 1133.
  • the battery 10a further includes a circuit board 14 electrically connected to the tab 12a.
  • the circuit board 14 is disposed on a surface formed by a part of the top surface 1121 and a part of the top seal portion 113a.
  • the circuit board 14 includes a flexible circuit board 141 and a reinforcing plate 142 disposed on the flexible circuit board 141 facing the top surface 1121.
  • the reinforcing plate 142 is disposed on a surface formed by a part of the third sealing portion 1133 and a part of the top surface 1121.
  • the reinforcing plate 142 includes a first surface 1421 facing the first sealing portion 1131 and a second surface 1422 facing the second sealing portion 1132.
  • the first surface 1421 is recessed inward to form a first receiving space 1423.
  • the second surface 1422 is recessed inward to form a second receiving space 1424. Part of the first sealing portion 1131 is accommodated in the first accommodating space 1423, and part of the second sealing portion 1132 is accommodated in the second accommodating space 1424.
  • step recessed treatment is performed on both ends of the reinforcing plate 142 to create a first sealing portion 1131 for the first sealing portion 1131 and the second sealing portion 1132.
  • the accommodating space 1423 and the second accommodating space 1424 for accommodating the second sealing portion 1132 greatly increase the space utilization of the battery 10a in the longitudinal direction (ie, the Y-axis direction) and increase the battery capacity.
  • a battery 10 a includes a battery core 11, tabs 12 a electrically connected to the battery core 11, and an insulating member 130.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a and a top seal 113a.
  • the main body 112 a includes a top surface 1121.
  • the main body 112a has a rectangular parallelepiped structure.
  • the main body 112a may also have a regular structure such as a columnar shape or other irregular structures.
  • the top seal portion 113 a extends from the top surface 1121 and is folded toward the top surface 1121. Wherein, the tab 12a extends from the top seal portion 113a.
  • the insulating member 130 includes a built-in portion 131 located in the top sealing portion 113a, and an extension portion 132 extending to the outside of the top sealing portion 113a.
  • the tab 12a passes through the insulating member 130 to be isolated from the top seal portion 113a.
  • the extension portion 132 is connected to the built-in portion 131 and is bent toward the top seal portion 113a.
  • the extension portion 132 includes two corner portions 1321 respectively located on two sides of the tab 12a.
  • a notch structure 1322 is provided on the two corner portions 1321.
  • the extension portion 132 is formed by cutting the corner portion 1321.
  • the intersection line 133 of the notch structure 1322 and the extension portion 132 is oblique.
  • intersection line 133 of the notch structure 1322 and the extension portion 132 is an arc or a polyline.
  • the notch structure 1322 and the side 1323 of the extension portion 132 intersect at a point A, and the notch structure 1322 and the top edge 1324 of the extension portion 132 intersect at a point B.
  • the angle ⁇ formed by the line between the point A and the point B and the side 1323 of the extension portion 132 satisfies: 110° ⁇ 160°.
  • the distance D from the intersection point C of the tab 12a and the extension portion 132 to the point B is 0.1 mm-1 mm.
  • the battery 10 a further includes a circuit board 14.
  • the circuit board 14 is disposed on a surface formed by a part of the top surface 1121 and a part of the top seal portion 113a.
  • an electrical connector 143 is provided on the surface of the circuit board 14 facing away from the battery core 11.
  • the electrical connector 143 is electrically connected to the tab 12a.
  • Embodiment 2.2 differs from Embodiment 2.1 in that the notch structure 1322 in Embodiment 2.2 is formed by folding the corner portion 1321.
  • Embodiment 2.3 The difference between Embodiment 2.3 and Embodiment 2.1 lies in the circuit board 14.
  • the circuit board 14 includes a flexible circuit board 141 and a reinforcing plate 142 disposed on the flexible circuit board 141 facing the top surface 1121.
  • the reinforcing plate 142 is disposed on a surface formed by a part of the third sealing portion 1133 and a part of the top surface 1121.
  • the reinforcing plate 142 includes a first surface 1421 facing the first sealing portion 1131 and a second surface 1422 facing the second sealing portion 1132.
  • the first surface 1421 is recessed inward to form a first receiving space 1423.
  • the second surface 1422 is recessed inward to form a second receiving space 1424. Part of the first sealing portion 1131 is accommodated in the first accommodating space 1423, and part of the second sealing portion 1132 is accommodated in the second accommodating space 1424.
  • the embodiment of the present application also provides an electronic device 100b.
  • the electronic device 100b includes the battery 10a described above.
  • the electronic device 100b may be a mobile electronic device, an energy storage device, an electric vehicle, a hybrid electric vehicle, and the like.
  • the mobile electronic device may be a mobile phone, a wearable electronic device, a tablet computer, a notebook computer, and the like.
  • the battery 10 c includes a battery cell 11.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a, a top sealing part 113a, and at least one side sealing part 114a.
  • the main body 112a includes a top surface 1121, a bottom surface 1122 facing away from the top surface 1121, and a side surface 1123 connected between the top surface 1121 and the bottom surface 1122.
  • the top seal portion 113 a extends from the top surface 1121.
  • the side sealing portion 114a extends from the side surface 1123 and extends outward in the length direction of the battery 10c (that is, the X-axis direction) to connect to the top sealing portion 113a.
  • a first notch 115 is provided at the intersection of the top seal portion 113a and the side seal portion 114a.
  • the side sealing portion 114a is folded toward the side surface 1123 along the connecting edge 116 where the side sealing portion 114a and the main body 112a intersect.
  • the intersection of the top seal portion 113a and the side seal portion 114a and the top seal portion 113a are folded toward the top surface 1121, and the top seal portion 113a is on the plane where the top surface 1121 of the battery 10c is located.
  • the projections on are all located within the range of the top surface 1121.
  • the first notch 115 is not limited to a regular shape such as an arc, a triangle, a trapezoid, a rectangle, or other irregular shapes.
  • a first notch 115 is provided at the intersection of the top seal portion 113a and the side seal portion 114a to prevent the folded top seal portion 113a and the side seal portion 114a from protruding relative to the battery 10c, thereby saving The packaging space of the battery 10c. In this way, when the battery 10c is applied to the electronic device 100c (refer to FIG.
  • the battery 10c of the present application is sealed in the top
  • the portion 113a and the side seal portion 114a will not protrude relative to the battery 10c after being folded, which facilitates the installation of the battery 10c, reduces the space occupancy rate of the battery 10c in the battery compartment, and improves the battery 10c.
  • the space utilization rate of the warehouse is the most efficient way to store the battery 10c.
  • the Y-axis direction is perpendicular to the X-axis direction.
  • the side sealing portion 114 a includes a corner portion 1141 close to the first notch 115. Wherein, the corner portion 1141 is folded toward the top seal portion 113a; or, the corner portion 1141 is provided with a second notch 1142.
  • the second notch 1142 is not limited to a regular shape such as a triangle, an arc, a trapezoid, a rectangle, or other irregular shapes.
  • the packaging bag 111 includes two side seals 114a.
  • the two side seal portions 114a are arranged opposite to each other.
  • the packaging bag 111 includes a side seal 114a.
  • the battery cell 11 further includes an electrode assembly 117 and a tab 118.
  • the electrode assembly 117 is housed in the main body 112a.
  • the tab 118 is electrically connected to the electrode assembly 117 and extends from the top seal portion 113a.
  • the battery 10 c further includes a circuit board 12.
  • the circuit board 12 is disposed on the top surface 1121 and is electrically connected to the tab 118.
  • the surface of the circuit board 12 opposite to the top surface 1121 is provided with an electrical connector 13c.
  • the electrical connector 13c is electrically connected to the tab 118.
  • the battery 10c includes a battery cell 11.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a, a top seal 113a, and two side seals 114a arranged opposite to each other.
  • the main body portion 112 a includes a top surface 1121, a bottom surface 1122 opposite to the top surface 1121, and a side surface 1123 connected between the top surface 1121 and the bottom surface 1122.
  • the main body 112a has a substantially rectangular parallelepiped structure.
  • the main body 112a has a regular structure such as a columnar shape or other irregular structures.
  • the top seal portion 113 a extends from the top surface 1121.
  • Each side sealing portion 114a extends from the side surface 1123 and extends outward in the length direction of the battery 10c to connect to the top sealing portion 113a.
  • a first notch 115 is provided at the intersection of the top seal portion 113a and the side seal portion 114a.
  • the side sealing portion 114a is folded toward the side surface 1123 along the connecting edge 116 where the side sealing portion 114a and the main body 112a intersect.
  • the intersection of the top seal portion 113a and the side seal portion 114a and the top seal portion 113a is folded toward the top surface 1121, and the projection of the top seal portion 113a in the length direction of the battery 10c is all located Within the range of the top surface 1121.
  • the first notch 115 is arc-shaped.
  • the battery cell 11 further includes an electrode assembly 117 and two tabs 118.
  • the electrode assembly 117 is housed in the main body 112a.
  • the two tabs 118 are electrically connected to the electrode assembly 117 and extend from the top seal portion 113a.
  • the battery cell 11 also includes an electrolyte (not shown in the figure).
  • the electrolyte is contained in the main body 112a.
  • the electrode assembly 117 may be a common structure in the prior art.
  • the electrode assembly 117 includes a positive electrode sheet 1171, a separator film 1172 and a negative electrode sheet 1173.
  • the positive electrode sheet 1171, the separator film 1172, and the negative electrode sheet 1173 are wound or laminated to form the electrode assembly 117.
  • one of the tabs 118 is electrically connected to the positive electrode sheet 1171, and the other of the tabs 118 is electrically connected to the negative electrode sheet 1173.
  • the battery 10c also includes a circuit board 12.
  • the surface of the circuit board 12 opposite to the top surface 1121 is provided with two electrical connectors 13c.
  • the circuit board 12 is disposed on the top surface 1121, and the two electrical connectors 13c are electrically connected to the corresponding tabs 118.
  • the first notch 115 is triangular.
  • Embodiment 3.3 The difference between Embodiment 3.3 and Embodiment 3.1 lies in the shape of the first notch 115.
  • the first notch 115 is rectangular.
  • the side sealing portion 114 a includes a corner portion 1141 close to the first notch 115.
  • the corner portion 1141 is provided with a second notch 1142.
  • Example 3.4 the second notch 1142 is triangular.
  • the second notch 1142 is not limited to a regular shape such as an arc, a trapezoid, a rectangle, or other irregular shapes.
  • Embodiment 3.4 by opening the second notch 1142 on the corner portion 1141, it is avoided that the corner portion 1141 of the side seal portion 114a is overlapped with the circuit board 12, resulting in the battery 10c being in the longitudinal direction. Due to the problem of waste of space, the space utilization rate of the battery 10c in the length direction is improved, and the battery capacity is improved.
  • the side sealing portion 114 a includes a corner portion 1141 close to the first notch 115. Wherein, the corner portion 1141 is folded toward the top seal portion 113a.
  • Embodiment 3.5 by folding the corner portion 1141, the corner portion 1141 of the side sealing portion 114a and the circuit board 12 are overlapped, which causes the waste of space in the length direction of the battery 10c, thereby avoiding the problem of waste of space in the length direction of the battery 10c.
  • the space utilization rate of the battery 10c in the length direction is improved, and the battery capacity is improved.
  • the embodiment of the present application also provides an electronic device 100c.
  • the electronic device 100c includes the battery 10c described above.
  • the electronic device 100c may be a mobile electronic device, an energy storage device, an electric vehicle, a hybrid electric vehicle, and the like.
  • the mobile electronic device may be a mobile phone, a wearable electronic device, a tablet computer, a notebook computer, and the like.
  • the battery 10d includes a battery core 11 and a circuit board 12 electrically connected to the battery core 11. Please refer to FIG. 47 and FIG. 48 together.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a and a top seal 113a.
  • the main body 112a includes a top surface 1121.
  • the top sealing portion 113 a extends from the top surface 1121 and is folded toward the top surface 1121.
  • the top seal portion 113a includes two oppositely disposed first seal portion 1131 and second seal portion 1132, and a third seal portion 1133 connected between the first seal portion 1131 and the second seal portion 1132.
  • the first sealing portion 1131 and the second sealing portion 1132 are respectively folded toward the third sealing portion 1133.
  • the circuit board 12 is disposed on a surface formed by a part of the third sealing portion 1133 and a part of the top surface 1121.
  • the circuit board 12 includes a flexible circuit board 126 and a reinforcing plate 127 disposed on the side of the flexible circuit board 126 facing the top surface 1121.
  • the projections of the first sealing portion 1131, the second sealing portion 1132, and the reinforcing plate 127 on the plane where the top surface of the battery 10d is located do not overlap.
  • the length direction of the battery 10d is the X-axis direction
  • the thickness direction of the battery 10d is the Y-axis direction.
  • the Y-axis direction is perpendicular to the X-axis direction.
  • the structure of the reinforcing plate 127 is changed to cooperate with the first sealing portion 1131 and the second sealing portion 1132, so as to prevent the first sealing portion 1131 and the second sealing portion 1132 from interacting with each other.
  • the overlapping arrangement of the circuit boards 12 causes the problem of wasting space in the length direction of the battery 10d (that is, the X-axis direction), which improves the space utilization of the battery 10d in the length direction, thereby achieving an increase in battery capacity the goal of.
  • an electrical connector 121 a is provided on the surface of the circuit board 12 facing away from the battery core 11.
  • the electrical connector 121a is electrically connected to the battery core 11.
  • a battery 10d includes a battery core 11 and a circuit board 12 electrically connected to the battery core 11.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a and a top seal 113a.
  • the main body 112a includes a top surface 1121, a bottom surface 1122 facing away from the top surface 1121, and a side surface 1123 connected between the top surface 1121 and the bottom surface 1122.
  • the main body 112a has a rectangular parallelepiped structure. In other embodiments, the main body 112a is not limited to a rectangular parallelepiped structure, and may also be a columnar structure.
  • the top seal portion 113 a extends from the top surface 1121 and is folded toward the top surface 1121.
  • the top seal portion 113a includes two oppositely disposed first seal portion 1131 and second seal portion 1132, and a third seal portion 1133 connected between the first seal portion 1131 and the second seal portion 1132.
  • the first sealing portion 1131 and the second sealing portion 1132 are respectively folded toward the third sealing portion 1133.
  • the circuit board 12 includes a flexible circuit board 126 and a reinforcing plate disposed on the side of the flexible circuit board 126 facing the top surface 1121 127.
  • the reinforcing plate 127 is disposed on a surface formed by a part of the third sealing portion 1133 and a part of the top surface 1121.
  • the flexible circuit board 126 includes a first end 1261 facing the first sealing portion 1131 and a second end 1262 facing the second sealing portion 1132.
  • the first end 1261 protrudes relative to the reinforcing plate 127 to form a first accommodating space together with the reinforcing plate 127 1263.
  • the second end portion 1262 protrudes relative to the reinforcing plate 127 to form a second accommodating space 1264 together with the reinforcing plate 127.
  • Part of the first sealing portion 1131 is accommodated in the first accommodating space 1263, and part of the second sealing portion 1132 is accommodated in the second accommodating space 1264.
  • the projections of the first sealing portion 1131, the second sealing portion 1132, and the reinforcing plate 127 on the plane where the top surface 1121 of the battery 10d is located do not overlap.
  • the Z-axis direction is perpendicular to the X-axis direction and the Y-axis direction.
  • a first sealing portion 1131 is created for the first sealing portion 1131 and the second sealing portion 1132.
  • the accommodating space 1263 and the second accommodating space 1264 for accommodating the second sealing portion 1132 greatly improve the space utilization of the battery 10d in the length direction, thereby achieving the purpose of increasing the battery capacity.
  • the packaging bag 111 further includes two side seals 114a arranged opposite to each other.
  • the two side sealing portions 114a both extend from the side surface 1123, and are connected to the first sealing portion 1131 and the second sealing portion 1132, respectively.
  • the two side sealing portions 114a are respectively folded toward the side surface 1123.
  • at least one of the two side seal portions 114a can be omitted.
  • the surface of the flexible circuit board 126 facing away from the reinforcing plate 127 is provided with two electrical connectors 121a.
  • the cell 11 further includes a first tab 115a and a second tab 116a with a different polarity from the first tab 115a.
  • the first tab 115a and the second tab 116a extend from the third sealing portion 1133, and are electrically connected to the two electrical connectors 121a, respectively.
  • the cell 11 further includes an electrode assembly (not shown in the figure) and an electrolyte (not shown in the figure).
  • the electrode assembly and the electrolyte are contained in the main body 112a.
  • the electrode assembly may be a common structure in the prior art.
  • the electrode assembly includes a positive electrode sheet, a separator film, and a negative electrode sheet.
  • the positive electrode sheet, the separator film and the negative electrode sheet are wound or laminated to form the electrode assembly.
  • the first tab 115a is electrically connected to the positive electrode sheet
  • the second tab 116a is electrically connected to the negative electrode sheet.
  • the circuit board 12 further includes an external component 128.
  • the external component 128 is electrically connected to the flexible circuit board 126.
  • the external component 128 is a terminal wire, a golden finger or a connector.
  • the battery 20a includes a battery core 11 and a circuit board 12 electrically connected to the battery core 11.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a and a top seal 113a.
  • the main body 112a includes a top surface 1121.
  • the top sealing portion 113 a extends from the top surface 1121 and is folded toward the top surface 1121.
  • the top seal portion 113a includes two oppositely disposed first seal portion 1131 and second seal portion 1132, and a third seal portion 1133 connected between the first seal portion 1131 and the second seal portion 1132.
  • the first sealing portion 1131 and the second sealing portion 1132 are respectively folded toward the third sealing portion 1133.
  • the circuit board 12 is disposed on a surface formed by a part of the third sealing portion 1133 and a part of the top surface 1121. Wherein, the projections of the first sealing portion 1131, the second sealing portion 1132 and the circuit board 12 on the plane where the top surface 1121 is located do not overlap (see Figure 53, Figure 55, Figure 56, Figure 57 and Figures 58).
  • the projections of the first sealing portion 1131, the second sealing portion 1132, and the circuit board 12 on the plane where the top surface 1121 is located are not overlapped to avoid the first sealing portion 1131 and the second sealing portion 1131.
  • the overlapping arrangement of the second sealing portion 1132 and the circuit board 12 causes the problem of wasting space in the length direction (that is, the X-axis direction) of the battery 20a, which improves the space utilization rate of the battery 10d in the length direction. In turn, the purpose of increasing the battery capacity is achieved.
  • an electrical connector 121 a is provided on the surface of the circuit board 12 facing away from the battery core 11.
  • the electrical connector 121a is electrically connected to the battery core 11.
  • a battery 20 a includes a battery core 11 and a circuit board 12 electrically connected to the battery core 11.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a and a top seal 113a.
  • the main body 112a includes a top surface 1121, a bottom surface 1122 facing away from the top surface 1121, and a side surface 1123 connected between the top surface 1121 and the bottom surface 1122.
  • the main body 112a has a rectangular parallelepiped structure. In other embodiments, the main body 112a is not limited to a rectangular parallelepiped structure, and may also be a columnar structure.
  • the top seal portion 113 a extends from the top surface 1121 and is folded toward the top surface 1121.
  • the top seal portion 113a includes two oppositely disposed first seal portion 1131 and second seal portion 1132, and a third seal portion 1133 connected between the first seal portion 1131 and the second seal portion 1132.
  • the first sealing portion 1131 and the second sealing portion 1132 are respectively folded toward the third sealing portion 1133.
  • the circuit board 12 is disposed on a surface formed by a part of the third sealing portion 1133 and a part of the top surface 1121.
  • the first sealing portion 1131 is provided with a first notch 1134 opposite to the circuit board 12, and the second sealing portion 1132 is provided with The second gap 1135 opposite to the circuit board 12. At this time, the projections of the first sealing portion 1131, the second sealing portion 1132, and the circuit board 12 on the plane where the top surface 1121 is located do not overlap.
  • a first gap 1134 opposite to the circuit board 12 is opened on the first sealing portion 1131, and the second sealing portion 1132 is opened with
  • the design of the second notch 1135 opposite to the circuit board 12 is designed to avoid the overlapping arrangement of the first sealing portion 1131 and the second sealing portion 1132 with the circuit board 12, resulting in the battery 20a in the longitudinal direction.
  • the problem of space waste improves the space utilization of the battery 20a in the length direction, thereby achieving the purpose of increasing the battery capacity.
  • the packaging bag 111 further includes two side sealing portions 114a arranged opposite to each other.
  • the two side sealing portions 114a both extend from the side surface 1123, and are connected to the first sealing portion 1131 and the second sealing portion 1132, respectively.
  • the two side sealing portions 114a are respectively folded toward the side surface 1123.
  • at least one of the two side seal portions 114a can be omitted.
  • the surface of the circuit board 12 facing away from the battery core 11 is provided with two electrical connectors 121 a.
  • the cell 11 further includes a first tab 115a and a second tab 116a with a different polarity from the first tab 115a.
  • the first tab 115a and the second tab 116a extend from the third sealing portion 1133, and are electrically connected to the two electrical connectors 121a, respectively.
  • the cell 11 further includes an electrode assembly (not shown in the figure) and an electrolyte (not shown in the figure).
  • the electrode assembly and the electrolyte are contained in the main body 112a.
  • the electrode assembly may be a common structure in the prior art.
  • the electrode assembly includes a positive electrode sheet, a separator film, and a negative electrode sheet.
  • the positive electrode sheet, the separator film and the negative electrode sheet are wound or laminated to form the electrode assembly.
  • the first tab 115a is electrically connected to the positive electrode sheet
  • the second tab 116a is electrically connected to the negative electrode sheet.
  • Embodiment 4.3 The difference between Embodiment 4.3 and Embodiment 4.2 lies in the structure of the first sealing portion 1131 and the second sealing portion 1132. That is, the first sealing portion 1131 in the embodiment 4.3 does not have the first gap 1134 in the embodiment 4.2, and the second sealing portion 1132 in the embodiment 4.3 does not have the second gap 1135 in the embodiment 4.2.
  • the first sealing portion 1131 includes a first corner portion 1136 opposite to the circuit board 12.
  • the second sealing portion 1132 includes a second corner portion 1137 opposite to the circuit board 12.
  • the first corner portion 1136 is provided with a first crease 1138, and the second corner portion 1137 is provided with a second crease 1139.
  • the first corner portion 1136 is folded along the first crease 1138, and the second corner portion 1137 is folded along the second crease 1139.
  • the first sealing portion 1131 The projections of the second sealing portion 1132 and the circuit board 12 on the plane where the top surface 1121 is located do not overlap.
  • the design of folding the first corner portion 1136 and the second corner portion 1137 is used to avoid the overlapping arrangement of the first sealing portion 1131 and the second sealing portion 1132 with the circuit board 12. This leads to the problem of wasting space in the length direction of the battery 20a, thereby improving the space utilization rate of the battery 20a in the length direction, thereby achieving the purpose of increasing the battery capacity.
  • a battery 20 a includes a battery core 11 and a circuit board 12 electrically connected to the battery core 11.
  • the battery cell 11 includes a packaging bag 111.
  • the packaging bag 111 includes a main body 112a and a top seal 113a.
  • the main body 112a includes a top surface 1121, a bottom surface 1122 facing away from the top surface 1121, and a side surface 1123 connected between the top surface 1121 and the bottom surface 1122.
  • the main body 112a has a rectangular parallelepiped structure. In other embodiments, the main body 112a is not limited to a rectangular parallelepiped structure, and may also be a columnar structure.
  • the top seal portion 113 a extends from the top surface 1121 and is folded toward the top surface 1121.
  • the top seal portion 113a includes two oppositely disposed first seal portion 1131 and second seal portion 1132, and a third seal portion 1133 connected between the first seal portion 1131 and the second seal portion 1132.
  • the first sealing portion 1131 and the second sealing portion 1132 are respectively folded toward the third sealing portion 1133.
  • the circuit board 12 is disposed on a surface formed by a part of the third sealing portion 1133 and a part of the top surface 1121.
  • the circuit board 12 includes a first side 122a, a second side 123a facing away from the first side 122a, a third side 124a, and a second side facing away from the third side 124a.
  • Four sides 125a The first side surface 122a and the second side surface 123a are connected between the third side surface 124a and the fourth side surface 125a, respectively.
  • the first side surface 122a is provided with a third gap 1221
  • the second side surface 123a is provided with a fourth gap 1231.
  • Part of the first sealing portion 1131 is correspondingly received in the third notch 1221, and part of the second sealing portion 1132 is correspondingly received in the fourth notch 1231.
  • the projections of the first sealing portion 1131, the second sealing portion 1132, and the circuit board 12 on the plane where the top surface 1121 is located do not overlap.
  • an avoidance design is made in the overlapping area of the circuit board 12 and the first sealing portion 1131 and the second sealing portion 1132 (that is, the first gap 1134 and the first gap 1134 are opened on the circuit board 12).
  • the third gap 1221 is triangular
  • the fourth gap 1231 is triangular.
  • the third notch 1221 is arc-shaped, and the fourth notch 1231 is arc-shaped.
  • the third gap 1221 is semicircular, hexagonal or octagonal
  • the fourth gap 1231 is semicircular, hexagonal or octagonal.
  • the packaging bag 111 further includes two side sealing portions 114a arranged opposite to each other.
  • the two side sealing portions 114a both extend from the side surface 1123, and are connected to the first sealing portion 1131 and the second sealing portion 1132, respectively.
  • the two side sealing portions 114a are respectively folded toward the side surface 1123.
  • at least one of the two side seal portions 114a can be omitted.
  • the circuit board 12 is provided with two electrical connectors 121 a on the surface of the circuit board 12 facing away from the battery core 11.
  • the cell 11 further includes a first tab 115a and a second tab 116a with a different polarity from the first tab 115a.
  • the first tab 115a and the second tab 116a extend from the third sealing portion 1133, and are electrically connected to the two electrical connectors 121a, respectively.
  • the cell 11 further includes an electrode assembly (not shown in the figure) and an electrolyte (not shown in the figure).
  • the electrode assembly and the electrolyte are contained in the main body 112a.
  • the electrode assembly may be a common structure in the prior art.
  • the electrode assembly includes a positive electrode sheet, a separator film, and a negative electrode sheet.
  • the positive electrode sheet, the separator film and the negative electrode sheet are wound or laminated to form the electrode assembly.
  • the first tab 115a is electrically connected to the positive electrode sheet
  • the second tab 116a is electrically connected to the negative electrode sheet.
  • the difference between embodiment 4.5 and embodiment 4.4 is that the third gap 1221 in embodiment 4.5 is opened at the junction of the third side surface 124a and the first side surface 122a.
  • the fourth gap 1231 is opened at the junction of the third side surface 124a and the second side surface 123a.
  • the third gap 1221 is triangular
  • the fourth gap 1231 is triangular.
  • the third notch 1221 is arc-shaped, and the fourth notch 1231 is arc-shaped.
  • the third gap 1221 is semicircular, hexagonal or octagonal
  • the fourth gap 1231 is semicircular, hexagonal or octagonal.
  • the embodiment of the present application also provides an electronic device 100d.
  • the electronic device 100d includes the aforementioned battery 10d/20a.
  • the electronic device 100d may be a mobile electronic device, an energy storage device, an electric vehicle, a hybrid electric vehicle, and the like.
  • the mobile electronic device may be a mobile phone, a wearable electronic device, a tablet computer, a notebook computer, and the like.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un ensemble batterie comprenant un corps principal de noyau, un film d'encapsulation et des pattes. Le film d'encapsulation comprend une partie corps principal, un bord de scellement supérieur et un bord de scellement latéral. La partie corps principal recouvre le corps principal de noyau, et la partie corps principal comprend une première surface, une seconde surface, une paroi supérieure et une paroi latérale, la première surface et la seconde surface étant disposées de manière opposée, la paroi supérieure reliant la première surface et la seconde surface, la paroi latérale reliant la première surface, la seconde surface et la paroi supérieure. Le bord de scellement supérieur est disposé sur la paroi supérieure et s'étend vers la première surface. Le bord de scellement latéral est disposé sur la paroi latérale et s'étend vers la seconde surface. Chaque patte comprend une première extrémité et une seconde extrémité qui sont disposées de manière opposée, la première extrémité étant reliée au corps principal de noyau, la seconde extrémité étant située à l'extérieur du film d'encapsulation. L'ensemble batterie comprend également des fils et/ou une carte de circuits imprimés flexible soudée aux secondes extrémités. L'ensemble batterie facilite la réduction de volume. L'invention concerne également une batterie, un bloc-batterie et un appareil électronique.
PCT/CN2021/073452 2019-12-06 2021-01-23 Batterie, ensemble batterie, bloc-batterie et appareil électronique WO2021110179A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180006949.0A CN114747070B (zh) 2020-06-30 2021-01-23 电池、电池组件、电池组及电子装置

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
CN201922179330.2U CN211404531U (zh) 2019-12-06 2019-12-06 电池组件及电子装置
CN201922179330.2 2019-12-06
CN202021254669.0 2020-06-30
CN202021257087.8 2020-06-30
CN202021257087.8U CN212625746U (zh) 2020-06-30 2020-06-30 电池、电池组及电子装置
CN202021254669.0U CN212907883U (zh) 2020-06-30 2020-06-30 电池及具有所述电池的电子装置
CN202021338803.5 2020-07-09
CN202021338803.5U CN212625976U (zh) 2020-07-09 2020-07-09 电池及具有所述电池的电子装置
CN202021351823.6U CN212625794U (zh) 2020-07-10 2020-07-10 电池及具有所述电池的电子装置
CN202021351823.6 2020-07-10

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CN113904035A (zh) * 2021-09-15 2022-01-07 东莞新能安科技有限公司 一种电芯、电池模组及用电设备
CN114284605A (zh) * 2021-12-24 2022-04-05 东莞新能德科技有限公司 电池及电子设备
CN114335676A (zh) * 2022-02-10 2022-04-12 珠海冠宇电源有限公司 电池
CN114535796A (zh) * 2021-11-02 2022-05-27 万向一二三股份公司 一种电芯两侧焊接极耳的方法
CN114639904A (zh) * 2022-03-31 2022-06-17 东莞新能德科技有限公司 电芯、电池及电子设备
WO2023029130A1 (fr) * 2021-09-02 2023-03-09 东莞新能德科技有限公司 Cellule, batterie, procédé de fabrication de cellule et dispositif électronique
CN116157955A (zh) * 2022-04-08 2023-05-23 宁德新能源科技有限公司 电化学装置、电池模组以及电子设备
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CN207676947U (zh) * 2017-07-21 2018-07-31 湖南立方新能源科技有限责任公司 一种软包装锂离子电池
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WO2023029130A1 (fr) * 2021-09-02 2023-03-09 东莞新能德科技有限公司 Cellule, batterie, procédé de fabrication de cellule et dispositif électronique
CN113904035A (zh) * 2021-09-15 2022-01-07 东莞新能安科技有限公司 一种电芯、电池模组及用电设备
CN114535796A (zh) * 2021-11-02 2022-05-27 万向一二三股份公司 一种电芯两侧焊接极耳的方法
CN114535796B (zh) * 2021-11-02 2023-08-15 万向一二三股份公司 一种电芯两侧焊接极耳的方法
CN114284605A (zh) * 2021-12-24 2022-04-05 东莞新能德科技有限公司 电池及电子设备
CN114335676A (zh) * 2022-02-10 2022-04-12 珠海冠宇电源有限公司 电池
WO2023151492A1 (fr) * 2022-02-10 2023-08-17 珠海冠宇电源有限公司 Batterie
WO2023151474A1 (fr) * 2022-02-10 2023-08-17 珠海冠宇电源有限公司 Batterie
CN114639904A (zh) * 2022-03-31 2022-06-17 东莞新能德科技有限公司 电芯、电池及电子设备
CN114639904B (zh) * 2022-03-31 2024-03-15 东莞新能德科技有限公司 电芯、电池及电子设备
CN116157955A (zh) * 2022-04-08 2023-05-23 宁德新能源科技有限公司 电化学装置、电池模组以及电子设备
WO2023193247A1 (fr) * 2022-04-08 2023-10-12 宁德新能源科技有限公司 Appareil électrochimique, module de batterie et dispositif électronique

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