WO2022205188A1 - 电池及电子设备 - Google Patents

电池及电子设备 Download PDF

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Publication number
WO2022205188A1
WO2022205188A1 PCT/CN2021/084697 CN2021084697W WO2022205188A1 WO 2022205188 A1 WO2022205188 A1 WO 2022205188A1 CN 2021084697 W CN2021084697 W CN 2021084697W WO 2022205188 A1 WO2022205188 A1 WO 2022205188A1
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WO
WIPO (PCT)
Prior art keywords
electrode
battery
wall
conductive portion
electrode assembly
Prior art date
Application number
PCT/CN2021/084697
Other languages
English (en)
French (fr)
Inventor
张弛
林礼清
陈梦鹤
刘常胜
Original Assignee
宁德新能源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德新能源科技有限公司 filed Critical 宁德新能源科技有限公司
Priority to CN202180006453.3A priority Critical patent/CN114730952B/zh
Priority to PCT/CN2021/084697 priority patent/WO2022205188A1/zh
Publication of WO2022205188A1 publication Critical patent/WO2022205188A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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 battery technology, and in particular, to a battery and an electronic device.
  • Embodiments of the present application provide a battery, including an electrode assembly, a first electrode, a second electrode, and a first member, the electrode assembly including a first conductive portion having a first surface and a second surface; the first electrode comprising a first concave portion with a first opening, the first concave portion includes a first wall and a second wall, and the electrode assembly is accommodated in the first concave portion; the second electrode is arranged in the first opening;
  • the first surface includes a first area connected to the first electrode or the second electrode, the first member contains insulating material, and the first member includes a first end surface, the first end surface connected to the second side.
  • the first conductive part has the first surface that is in contact with the electrode, and at the same time, the first member is provided on the second surface of the first conductive part, so that when the battery is subjected to external impact, other components in the electrode assembly can be buffered Part of the impact on the first conductive part improves the connection reliability between the first conductive part and the electrode.
  • the first region and the first member when viewed along a first direction perpendicular to the first region, the first region and the first member have overlapping portions.
  • the first member further includes a second end surface opposite to the first end surface, and the second end surface is connected to the electrode assembly.
  • At least a portion of the first member is in contact with the second wall.
  • At least a portion of the first member is bonded to the second wall.
  • the first opening is provided on the second wall.
  • the first surface includes a first area connected to the second electrode, and when viewed along a first direction perpendicular to the first area, the first member has the first opening parts that do not overlap.
  • the first member is disposed at a position farther from the first wall than a center portion of the second wall in a second direction perpendicular to the first wall.
  • the first member when viewed along a first direction perpendicular to the first region, has a portion that does not overlap with the first opening.
  • the battery further includes a first cover covering the first recess.
  • the second wall includes a curved second region and a flat third region, and the first opening is provided in the third region.
  • the electrode assembly further includes a second conductive portion having a third surface and a fourth surface, and the third surface includes a conductive portion away from the first electrode and the second electrode. the fourth area where the electrodes of the part are connected; the battery further includes a second member, the second member contains an insulating material, and the second member includes a third end face, the third end face and the fourth face connected.
  • the fourth region and the second member when viewed along a third direction perpendicular to the fourth region, the fourth region and the second member have overlapping portions.
  • the second member further includes a fourth end surface opposite to the third end surface, and the fourth end surface is connected to the electrode assembly.
  • At least a portion of the second member is in contact with the second wall.
  • the second member is bonded to the second wall. In some embodiments, the second member is bonded to the second wall on opposite sides of the second conductive portion.
  • the second member when viewed along a third direction perpendicular to the fourth region, has a portion that does not overlap with the fourth region.
  • the second member is disposed at a position farther from the first wall than a center portion of the second wall in a second direction perpendicular to the first wall.
  • Embodiments of the present application further provide an electronic device, including any one of the batteries described above.
  • the battery and electronic device provided by the present application, by arranging the first material between the first conductive part and the electrode assembly, the impact on the first conductive part is reduced, the connection reliability is improved, and a battery with a longer service life is obtained. and electronic equipment.
  • FIG. 1 is a schematic three-dimensional structure diagram of a battery in a first embodiment of the present application.
  • FIG. 2 is a schematic front view of the battery shown in FIG. 1 .
  • FIG. 3 is a schematic cross-sectional view of the battery shown in FIG. 1 along the direction A-A.
  • FIG. 4 is a schematic cross-sectional view of another battery shown in FIG. 1 along the A-A direction.
  • FIG. 5 is a schematic perspective view of the battery shown in FIG. 2 .
  • FIG. 6 is a schematic perspective view of the battery shown in FIG. 2 in another embodiment.
  • FIG. 7 is a schematic perspective view of the battery shown in FIG. 2 from another angle.
  • FIG. 8 is a schematic perspective view of the battery shown in FIG. 2 from another angle in another embodiment.
  • FIG. 9 is a schematic three-dimensional structural diagram of the battery shown in FIG. 1 after removing the first cover.
  • FIG. 10 is a schematic top view of the battery shown in FIG. 9 after removing the first cover.
  • FIG. 11 is a schematic three-dimensional structure diagram of a battery in the second embodiment of the present application.
  • FIG. 12 is a schematic cross-sectional view of the battery shown in FIG. 11 along the B-B direction.
  • FIG. 13 is a schematic cross-sectional view of a battery in a third embodiment of the present application.
  • FIG. 14 is a schematic three-dimensional structure diagram of a battery in a fourth embodiment of the present application.
  • FIG. 15 is a schematic cross-sectional view of the battery shown in FIG. 14 along the C-C direction.
  • FIG. 16 is a schematic perspective view of the battery shown in FIG. 14 .
  • FIG. 17 is a schematic top view of the battery shown in FIG. 14 after removing the first cover.
  • FIG. 18 is a schematic three-dimensional structural diagram of an electronic device according to a fifth embodiment of the present application.
  • the first pole piece 21 is the first pole piece 21
  • the third side 241 is the third side 241
  • the fourth side 242 is the fourth side 242
  • the first part 40 is the first part 40
  • spatially relative terms such as “on” and the like, may be used herein for convenience of description to describe the relationship of one element or feature to another element(s) or feature(s) as illustrated in the figures. It will be understood that, in addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device or apparatus in use or operation. For example, if the device in the figures is turned over, elements described as “above” or “over” other elements or features would then be oriented “below” or “beneath” the other elements or features. Thus, the exemplary term “upper” can encompass both an orientation of above and below. It will be understood that, although the terms first, second, third, etc.
  • Embodiments of the present application provide a battery, including an electrode assembly, a first electrode, a second electrode, and a first member, the electrode assembly including a first conductive portion having a first surface and a second surface; the first electrode comprising a first concave portion with a first opening, the first concave portion includes a first wall and a second wall, and the electrode assembly is accommodated in the first concave portion; the second electrode is arranged in the first opening;
  • the first surface includes a first region that is in contact with the first electrode or the second electrode, the first member contains an insulating material, and the first member includes an opposite first end surface, the first One end face is in contact with the second face.
  • the first conductive part has the first surface that is in contact with the electrode, and at the same time, the first member is provided on the second surface of the first conductive part, so that when the battery is subjected to external impact, other components in the electrode assembly can be buffered Part of the impact on the first conductive part improves the connection reliability between the first conductive part and the electrode.
  • the tabs or adapters of the bare cell after being put into the case are tightly fitted with the case or the pole.
  • the pressing knife is inserted between the bare cell and the tab or adapter, and presses the tab or adapter during welding, so that the tab or adapter is in close contact with the shell or the pole.
  • the flatness of the surface of the pressing knife is reduced, and it is difficult to ensure the close fit between the tab or the adapter piece and the housing or the pole in the subsequent welding process.
  • the first part is located between the first conductive part and the pressing knife, so that it is convenient for the pressing knife to press the first conductive part and the electrode tightly, so as to ensure the reliability of the welding between the first conductive part and the electrode.
  • due to the isolation of the first part It can avoid the damage to the pressing knife during the welding process, thereby simplifying the production process and reducing the production cost.
  • Embodiments of the present application further provide an electronic device, which includes the above-mentioned battery.
  • the electronic equipment improves its own reliability, and the cost of the electronic equipment is also reduced as a whole due to the reduction of the cost of the battery.
  • the battery 100 provided in the first embodiment of the present application includes a case 10 (first electrode), an electrode assembly 20, a second electrode 30 and a first member 40, and the electrode assembly 20 is accommodated in the case (the first electrode).
  • the electrode assembly 20 includes a first conductive portion 23 having a first surface 231 and a second surface 232, the second electrode 30 is provided in the casing 10, and the first member 40 is located in On the second surface 232 of the first conductive part 23, the first member 40 can protect the first conductive part 23, and when the battery is subjected to external impact, the impact of other parts of the electrode assembly on the first conductive part 23 can be buffered, The connection reliability between the first conductive portion 23 and the electrode is improved.
  • the first region 2311 in the first surface 231 can be closely attached to the case (first electrode) 10 or the second electrode 30, so that the first region 2311 and the shell can be easily Welding is performed between the body (first electrode) 10 or the second electrode 30 .
  • the case (first electrode) 10 includes a bottom case 11 and a first cover 12 , and the first cover 12 is fixed on the bottom case 11 to protect the The electrode assembly 20.
  • the second conductive portion 24 is connected to the bottom case 11 to realize electrical communication between the bottom case 11 and the electrode assembly 20 .
  • the bottom case 11 includes a first wall 111 and a second wall 112.
  • the second wall 112 is arranged on the peripheral side of the first wall 111 and is perpendicular to the first wall 111.
  • the deviation between the vertical arrangement of the second wall 112 and the first wall 111 can be within ⁇ 5°.
  • the casing 10 is further provided with a first opening 113 , the first opening 113 is opened on the second wall 112 , and the second electrode 30 is provided at the first opening 113 .
  • the first wall 111 and the second wall 112 together form a first concave portion 114 , and the electrode assembly 20 is accommodated in the first concave portion 114 .
  • the first cover 12 is fixed to an end of the second wall 112 away from the first wall 111 and covers the first recess 114 , so that the electrode assembly 20 is accommodated in the casing 10 .
  • the material of the bottom case 11 and the first cover 12 may include at least one of steel, copper, aluminum, nickel, and plastic; the material of the second electrode 30 may include at least one of copper, nickel, and aluminum. A sort of.
  • the second wall 112 includes a curved second area 1121 and a flat third area 1122 , and the second area 1121 and the third area 1122 are in contact. Further, the first opening 113 is provided in the third area 1122 , so that the casing 10 can better fix the second electrode 30 and lift the casing 10 and the second electrode 30 Of course, it is also feasible to provide the first opening 113 in a curved region such as the second region 1121 and then provide the second electrode 30 in the first opening 113 for the assembly efficiency.
  • the second wall 112 includes a curved second region 1121 , in order to be further compatible with the electrode assembly 20 , and the curved second region 1121 is provided to increase the accommodation space of the housing 10 , The electrode assembly 20 with a larger volume can be accommodated, and the overall energy density of the battery 100 can be improved.
  • the first cover 12 includes a third wall 121 , and the first cover 12 is fixed on the second wall 112 to cover the first recess 114 .
  • the third wall 121 is provided with a second opening 1211 , and the second opening 1211 is located closer to the first opening 113 than the geometric center of the third wall 121 . position, the electrolyte solution can be injected into the bottom case 11 through the second opening 1211 .
  • the first cover 12 further includes a second cover 122 .
  • the second cover 122 is located at the position of the second opening 1211 and faces the housing.
  • first wall 111 , the second wall 112 and the first opening 113 are integrally formed.
  • the first cover 12 is provided on the casing 10
  • the second cover 122 is provided on the third wall 121 .
  • the electrode assembly 20 includes a first pole piece 21 , a second pole piece 22 and an isolation film 25 , and the isolation film 25 is disposed between the first pole piece 21 and the second pole piece 22 between.
  • the first pole piece 21 , the separator 25 and the second pole piece 22 are stacked to form a laminated electrode assembly 20 .
  • the method of forming the electrode assembly 20 is relatively common in the field of manufacturing the battery 100 , and details are not described herein again.
  • the electrode assembly 20 further includes a first conductive part 23 having a first surface 231 and a second surface 232 , and the first surface 231 and the second surface 232 are opposite surfaces of the first conductive part 23 .
  • the first conductive portion 23 is connected to the first pole piece 21 .
  • the first conductive portion 23 may also be a part of the first pole piece 21 .
  • the electrode assembly 20 is connected to the second electrode 30 through the first conductive portion 23 , so as to realize electrical communication between the electrode assembly 20 and the second electrode 30 .
  • the first conductive portion 23 and the second electrode 30 may be connected by welding and/or a conductive adhesive material.
  • the first surface 231 of the first conductive portion 23 is closer to the second electrode 30 than the second surface 232 , And the first surface 231 includes a first area 2311 that is in contact with the second electrode 30 , and the first area 2311 and the second electrode 30 can be welded and/or have conductive bonding. Materials are connected to achieve electrical communication between the electrode assembly 20 and the second electrode 30 .
  • the first conductive part 23 includes a plurality of first metal parts 233 and a first transition part 234 , the first metal parts 233 are connected to the first pole piece 21 , in some embodiments , the first metal part 233 is a part extending from the first pole piece 21 , a plurality of the first metal parts 233 are stacked to form a whole and are connected by welding, the first switching The part 234 is welded with a plurality of the first metal parts 233 forming a whole, and the first surface 231 is the surface corresponding to the first transfer part 234 and the second electrode 30 .
  • the first pole piece 21 is a positive pole piece
  • the positive pole piece includes a positive electrode current collector and a positive electrode active material layer disposed on the positive electrode current collector.
  • the positive electrode active material layer may be located on one side or both sides of the positive electrode current collector.
  • the positive electrode current collector may be aluminum foil, and of course, other positive electrode current collectors commonly used in the art may also be used.
  • the positive active material may include at least one of lithium cobalt oxide, lithium manganate, lithium iron phosphate, lithium iron manganese phosphate, lithium nickel cobalt manganate, lithium nickel cobalt aluminate, or lithium nickel manganate,
  • the above-mentioned positive electrode active material may be subjected to doping and/or coating treatment.
  • the first metal part 233 is a positive electrode tab. The connection content between the positive electrode tab and the positive electrode tab is relatively common in the technical field of battery 100 manufacturing, and will not be repeated here.
  • connection between the electrode assembly 20 and the second electrode 30 is further facilitated by arranging the first adapter portion 234 .
  • the first transition portion 234 can also be cancelled, and the first metal portion 233 can be extended, so that the first metal portion 233 is directly connected to the second electrode 30 connections.
  • the electrode assembly 20 further includes a second conductive portion 24 having a third surface 241 and a fourth surface 242 , and the third surface 241 and the fourth surface 242 are part of the second conductive portion 24 . opposite surfaces.
  • the second conductive portion 24 is connected to the second pole piece 22 .
  • the second conductive portion 24 may also be a part of the second pole piece 22 .
  • the electrode assembly 20 is connected to the casing 10 through the second conductive portion 24 , so as to realize electrical communication between the electrode assembly 20 and the casing 10 .
  • the second conductive portion 24 and the housing 10 may be connected by welding and/or an adhesive material with electrical conductivity.
  • the third surface 241 of the second conductive portion 24 is closer to the casing 10 than the fourth surface 242 , and
  • the third surface 241 includes a fourth area 2411 connected to the casing 10 , and the fourth area 2411 and the casing 10 can be connected by welding and/or a conductive adhesive material , so as to achieve electrical communication between the electrode assembly 20 and the casing 10 .
  • the second conductive part 24 includes a plurality of second metal parts 243 and a second transition part 244 , the second metal parts 243 are connected to the second pole piece 22 , in some embodiments , the second metal part 243 is a part extending from the second pole piece 22 , a plurality of the second metal parts 243 are stacked to form a whole and are connected by welding, the second transfer The part 244 is welded with a plurality of the second metal parts 243 forming a whole, and the third surface 241 is the surface of the second adapter part 244 corresponding to the casing 10 .
  • the second pole piece 22 is a negative pole piece
  • the negative pole piece may include a negative electrode current collector and a negative electrode active material layer disposed on the negative electrode current collector.
  • the anode active material layer may be provided on one side or both sides of the anode current collector.
  • the negative electrode current collector may use at least one of copper foil, nickel foil or carbon-based current collector.
  • the anode active material layer may include an anode active material.
  • the negative active material includes at least one of a carbon material or a silicon-based material.
  • the carbon material includes at least one of graphite, hard carbon, and soft carbon; and the silicon-based material includes at least one of silicon, silicon oxide, silicon carbon, or silicon alloy.
  • the second metal part 243 is a negative electrode tab. The connection content between the negative electrode tab and the negative electrode tab is relatively common in the field of battery 100 manufacturing technology, and will not be repeated here.
  • connection between the electrode assembly 20 and the casing 10 is further facilitated by arranging the second adapter portion 244 .
  • the second adapter portion 244 can also be eliminated, and the second metal portion 243 can be extended, so that the second metal portion 243 is directly connected to the housing 10 . connect.
  • the second electrode 30 is disposed at the first opening 113 , and the second electrode 30 is fastened to the outer wall forming the first opening 113 .
  • An insulating spacer 70 is provided between the second electrode 30 and the second wall 112 to isolate the second electrode 30 and the second wall 112 to avoid electricity between the two.
  • the battery 100 is short-circuited due to the connection.
  • the second electrode 30 is a pole, and the first conductive portion 23 and the pole are welded to achieve electrical conduction between the electrode assembly 20 and the pole. It can be understood that, in other embodiments, the second electrode 30 is not limited to this, and can be replaced with other structures with equivalent functions or functions.
  • the first member 40 when the electrode assembly 20 is disposed in the casing 10 , the first member 40 is disposed on the second surface 232 of the first conductive portion 23 , and the first end surface 41 thereof is connected to the second surface 232 of the first conductive portion 23 .
  • the second surface 232 is in contact with each other.
  • the first member 40 has a sheet-like structure, and the first member 40 contains an insulating material to isolate the second pole piece 22 from the first conductive portion 23 and reduce the electrical connection between the two.
  • the battery 100 is short-circuited.
  • the first member 40 can also protect the first conductive portion 23, and when the battery is impacted by the outside, it can buffer the impact of other parts of the electrode assembly on the first conductive portion 23 and improve the connection between the first conductive portion 23 and the electrodes. reliability.
  • the insulating material may include a polymer.
  • the polymer has excellent insulating properties and low hardness, and can deform when subjected to impact to play a buffering role.
  • the polymer includes at least one of polyethylene, polypropylene, polyurethane, styrene-butadiene rubber, and acrylate-based elastomers.
  • the elasticity of the first member 40 is higher than that of the case 10 , the second electrode 30 or the first conductive portion 23 .
  • the elastic coefficient of the first member 40 ranges from 0.2 to 2 N/mm.
  • the first member 40 further includes a second end surface 42 opposite to the first end surface 41 , the second end surface 42 is connected to the main body of the electrode assembly 20 , wherein the electrode
  • the main part of the assembly 20 is an integral structure including the first pole piece 21, the second pole piece 22, the isolation film 25 and the adjacent parts of the pole lug and the pole piece.
  • the end face 42 is in contact with the main body of the electrode assembly 20, which can restrain the shaking of the electrode assembly 20 in the casing 10, reduce the pulling on the first conductive part 23, and reduce the risk of the connection between the first conductive part 23 and the electrode falling off , thereby increasing the battery life.
  • the first member 40 includes a square block structure, a rectangular block structure, and a cylindrical structure, and the first member 40 contains an insulating material. In some embodiments, the first member 40 is insulating foam.
  • the shape of the first member 40 is not limited to this.
  • other cylindrical shapes such as elliptical cylinders can also be substituted.
  • the insulating material for making the first member 40 is not limited to the above-mentioned insulating foam, and it can also be replaced with other structures with equivalent functions or functions.
  • the first member 40 is disposed between the first conductive portion 23 and the main body of the electrode assembly 20 using an interference fit, so that the first conductive portion 23 passes through the first member 40 is pressed closely to the second electrode 30 , so that the original pressing process can be replaced, and the convenience of welding between the second electrode 30 and the first conductive portion 23 is improved.
  • the first member 40 can be in contact with the second wall 112 .
  • the first member 40 can protect the edge of the connection area between the first conductive portion 23 and the electrode to ensure the reliability of the connection.
  • at least a portion of the first member 40 may be bonded to the second wall 112 .
  • the first conductive portion 23 can be closely attached to the second electrode 30, thereby further suppressing the shaking of the first conductive portion when subjected to external impact, ensuring that The reliability of the connection is improved, and the original pressing process can be replaced during the battery preparation process, which improves the convenience of the connection between the second electrode 30 and the first conductive portion 23 .
  • the first member 40 is bonded to the second wall 112 on opposite sides of the first conductive portion 23 , which can further ensure the close contact effect and improve the reliability of welding.
  • the surface of the first member 40 has an adhesive material, for example, the first member 40 may be an insulating tape.
  • FIG. 5 is a schematic perspective view of the battery 100 , wherein the dotted line represents the structure disposed inside the casing 10 , specifically the electrode assembly 20 and the first member 40 . Viewed from a first direction perpendicular to the first region 2311 , the first region 2311 and the first member 40 have overlapping portions. Wherein, the first direction is along the X-axis direction.
  • the content shown by the dotted line is the electrode assembly 20 and the first member 40 , and it can be observed that the first member 40 and the first region 2311 have overlapping portions, that is, the first conductive portion 23
  • the surface of the connection area with the electrode has the first member 40, which can buffer the impact of other parts in the electrode assembly 20 directly on the connection area, and improve the connection reliability between the first conductive part 23 and the electrode; in addition, in the process of preparing the battery, so that when the first member 40 presses the first conductive portion 23, the first region 2311 on the first surface 231 is better in close contact with the second electrode 30, which is convenient for the Welding is performed between the first region 2311 and the second electrode 30 to improve the stability of the welding between the first conductive portion 23 and the second electrode 30 .
  • the first member 40 when viewed along the X-axis direction, has a portion that does not overlap with the first opening 113 . That is, there is a portion of the first member 40 that exceeds the first opening 113 , so that the first member 40 has a portion larger than the first opening 113 in other directions.
  • the first member 40 can better protect the connection structure between the first conductive part 23 and the second electrode 30 and/or between the second electrode 30 and the casing 10 at the first opening 113, buffer the impact there, and improve the connection stability; during the battery preparation process, the first member 40 can better press the first conductive part 23, so that the larger area of the first conductive part 23 is attached to the first conductive part 23 On the second electrode 30 at the opening 113, it is fully ensured that the first conductive portion 23 has a sufficient area to be connected with the second electrode 30, and the stability of the connection between the two is ensured.
  • the first member 40 is disposed farther from the first wall than the center of the second wall 112 in the second direction perpendicular to the first wall 111 .
  • 111 further afield.
  • the second direction is along the Z-axis direction.
  • the first member 40 is disposed above the center of the second wall 112 so that the first member 40 is away from the first wall 111 .
  • the center portion of the second wall 112 is at the midpoint position.
  • the first member 40 is arranged at a position farther from the first wall 111 , so that the first member 40 can better press the first transition portion 234 in the first conductive portion 23 , The interference between the first member 40 and the stacked first metal portions 233 is avoided, thereby affecting the connection between the first metal portion 233 and the first transition portion 234 .
  • the battery 100 further includes a second member 50 .
  • the second member 50 is disposed on the first portion of the second conductive portion 24 .
  • the second member 50 has a substantially sheet-like structure, and the second member 50 contains an insulating material to isolate the first pole piece 21 and the second conductive portion 24 and reduce the electrical connection between the two.
  • the battery 100 is short-circuited.
  • the second member 50 can also protect the second conductive portion 24.
  • the insulating material may include a polymer, which has excellent insulating properties and low hardness, and can deform when subjected to impact to play a buffering role.
  • the polymer includes at least one of polyethylene, polypropylene, polyurethane, styrene-butadiene rubber, and acrylate-based elastomers.
  • the elasticity of the second member 50 is higher than that of the housing 10 or the second conductive portion 24 . In some embodiments, the elastic coefficient of the second member 50 ranges from 0.2 to 2 N/mm.
  • the second member 50 further includes a fourth end surface 52 opposite to the third end surface 51 , and the fourth end surface 52 is in contact with the main body of the electrode assembly 20 , and is impacted by an external force. , by connecting the fourth end face 52 of the second member 50 with the main body of the electrode assembly 20 , the shaking of the electrode assembly 20 in the casing 10 can be suppressed, the pulling of the second conductive part 24 can be reduced, and the second conductive part 24 can be reduced. Risk of detachment from electrodes, thereby increasing battery life.
  • the second member 50 has a substantially square block structure, and the second member 50 contains an insulating material. In some embodiments, the second member 50 is insulating foam.
  • the shape of the second member 50 is not limited to this.
  • other shapes such as a cylindrical shape can also be substituted.
  • the insulating material for making the second member 50 is not limited to the above-mentioned insulating foam, and it can also be replaced with other structures with equivalent functions or functions.
  • the second member 50 is disposed between the second conductive portion 24 and the main body of the electrode assembly 20 using an interference fit, so that the second conductive portion 24 passes through the second member 50% of the pressure is pressed against the second wall 112 of the battery 100, so that the original pressing process can be replaced, and the convenience of welding between the second wall 112 and the second conductive part 24 can be improved.
  • the second member 50 can be connected to the second wall 112 .
  • the second member 50 can sufficiently protect the edge of the second conductive portion 24 and the electrode connection region, so as to ensure the reliability of the connection.
  • at least a portion of the second member 50 may be bonded to the second wall 112 .
  • the second conductive portion 24 can be closely attached to the second wall 112 , thereby further suppressing the shaking of the second conductive portion 24 when subjected to an external impact.
  • the reliability of the connection is improved, and the original pressing process can be replaced, and the convenience of welding between the second wall 112 and the second conductive portion 24 is improved.
  • the second member 50 is bonded to the second wall 112 on opposite sides of the second conductive portion 24 , which can further ensure the close contact effect and improve the reliability of welding.
  • the surface of the second member 50 has an adhesive material, for example, the second member 50 may be an insulating tape.
  • the battery 100 includes a first electrode including a second wall 112 of the battery 100, the second wall 112 being made of a conductive material to enable it to function as the The first electrode of the battery 100 .
  • the second conductive portion 24 is pressed against the first electrode by the extrusion of the second member 50 to improve the reliability and convenience of welding between the first electrode and the second conductive portion 24 sex.
  • FIG. 7 is a schematic perspective view of the battery 100 from another perspective, wherein the dotted line represents the structure inside the casing 10 .
  • the second member 50 is in contact with the second wall 112 .
  • the extending distance of the second member 50 along the Y-axis is greater than the extending distance of the second conductive portion 24 along the Y-axis, the portion of the second member 50 beyond the second conductive portion 24 and the second conductive portion 24
  • the walls 112 are in contact with each other, so that during the battery production process, when the second member 50 presses the second conductive portion 24 , the second conductive portion 24 along the Y-axis direction can be in close contact with the first conductive portion 24 .
  • the connection between the second conductive portion 24 and the first electrode is facilitated, and the stability of the connection is improved.
  • the fourth region 2411 and the second member 50 when viewed along a third direction perpendicular to the fourth region 2411 , the fourth region 2411 and the second member 50 have overlapping portions.
  • the third direction is the opposite direction of the X axis.
  • the content shown by the dotted line is the electrode assembly 20 and the second member 50 , and it can be observed that the second member 50 and the fourth region 2411 have overlapping parts, that is, the second conductive portion 24
  • the surface of the connection area with the electrode has the second member 50, which can buffer the impact of other parts in the electrode assembly directly on the connection area, and improve the connection reliability between the second conductive part 24 and the electrode; in the process of preparing the battery, it can make
  • the second member 50 presses the second conductive portion 24 the fourth area 2411 on the third surface 241 is better in close contact with the first electrode, which is convenient for the fourth area 2411 Connecting with the first electrode improves the stability of the connection between the second conductive part 24 and the first electrode.
  • the second wall 112 forming the first electrode is a flat area, so that the second member 50 can better abut the second conductive portion 24 on the flat first electrode, The stability of the connection between the second conductive portion 24 and the first electrode is improved.
  • the second member 50 is disposed farther from the first wall than the center of the second wall 112 in a second direction perpendicular to the first wall 111 .
  • 111 further afield.
  • the second direction is along the Z-axis direction.
  • the second member 50 is disposed above the center portion of the second wall 112 with the center portion of the second wall 112 as a reference, so that the second member 50 is far away from the center portion. the first wall 111 .
  • the center portion of the second wall 112 is at the midpoint position.
  • the second member 50 is arranged at a position farther from the first wall 111 , so that the second member 50 can better press the second transition portion 244 in the second conductive portion 24 , The interference between the second member 50 and the stacked second metal portions 243 is avoided, thereby affecting the connection between the second metal portion 243 and the second transition portion 244 .
  • the first member 40 and the second member 50 have the same structure and the same function.
  • the first member 40 is pressed against the first conductive portion 23
  • the second member 50 is pressed against the second conductive portion 24 , so that the first conductive portion 23 and the second electrode 30 are closely spaced
  • the second conductive portion 24 is closely bonded to the first electrode, thereby improving the reliability of the connection.
  • FIG. 9 is a schematic perspective view of the battery 100 after removing the first cover 12
  • FIG. 9 is a top view of the battery 100 shown in FIG. 7 after removing the first cover 12 . It can be seen that the first member 40 and the second member 50 are located at opposite ends of the battery 100 .
  • the insulating foams when the first member 40 and the second member 50 are both insulating foams, the insulating foams have a porous structure, which can provide sufficient buffering effect, reducing the first conductive portion or the second The impact on the conductive part improves the reliability of the connection and increases the life of the battery.
  • the material of the insulating foam can be at least one of polypropylene (PP) and polyurethane (PU). It can be understood that, in other embodiments, the material of the insulating foam is not limited to this.
  • the electrode assembly 20 When disposing the first member 40 and the second member 50 , the electrode assembly 20 may be set in the casing 10 first, and then the first member 40 and the second member 50 may be placed, or After the first member 40 and the second member 50 are assembled with the electrode assembly 20 , they can be put into the casing 10 together.
  • the arrangement of the first conductive portion 23 and the first member 40 is opposite to that of the above-mentioned first embodiment.
  • the battery 100 includes a casing 10 , an electrode assembly 20 , a second electrode 30 and a first member 40 .
  • the arrangement relationship and connection relationship between the structures are substantially the same as the structure of the battery 100 in the first embodiment, and the differences are It is as follows: the second conductive portion 24 in the first embodiment is the first conductive portion 23 in this embodiment, and the second member 50 in the first embodiment is the first member 40 in this embodiment.
  • the first member 40 is disposed at a position farther from the first wall 111 than the center of the second wall 112 in the second direction perpendicular to the first wall 111 . Further, at least a part of the first member 40 is in contact with the second wall 112 . Wherein, the second wall 112 forms the first electrode of the battery 100 . That is, the first member 40 is disposed on the first conductive portion 23, and the first conductive portion 23 is connected to the second wall 112 forming the first electrode, so that the electrode assembly 20 and the Electrical communication between housings 10 .
  • the first conductive portion 23 in this embodiment is the second conductive portion 24 in the above-mentioned first embodiment, and the first member 40 is the second member 50 in the above-mentioned first embodiment.
  • the battery 100 further includes a second electrode 30 disposed in the first opening 113 .
  • the second conductive portion 24 is pressed against the second electrode 30 by the second member 50 .
  • the second conductive portion 24 is the first conductive portion 23 in the above-mentioned first embodiment
  • the second member 50 is the first member 40 in the above-mentioned first embodiment.
  • FIG. 11 is a schematic three-dimensional structure diagram of the battery 100 according to the second embodiment of the present application
  • FIG. 12 is a schematic cross-sectional view of the battery 100 shown in FIG. 11 along the B-B direction.
  • the structure of the battery 100 in the second embodiment is substantially the same as the structure of the battery 100 in the first embodiment, the difference is that in the second embodiment, the second opening 1211 on the first cover 12 is provided in the third at the approximate center of the wall 121 . Setting the second opening 1211 at this position can improve the influence of the first conductive portion 23 and the first pole piece during the flow of the electrolyte when the electrolyte is injected into the casing 10 .
  • the connection between the first conductive parts 23 and the first pole piece 21 ensures the stability of the connection.
  • the first conductive portion 23 cancels the first transfer portion 234
  • the second conductive portion 24 cancels the second transfer portion 244
  • the first member 40 is directly connected to the Pressed on the first metal part 233
  • the first metal part 233 is welded with the second electrode 30
  • the second member 50 is pressed on the second metal part 243
  • the first metal part 50 is pressed on the second metal part 243.
  • the two metal parts 243 are welded to the first electrode.
  • the distance that the first member 40 extends is substantially the same as the distance that the first conductive portion 23 between the first member 40 and the second electrode 30 extends
  • the second member 50 extends approximately the same distance as the second conductive portion 24 between the second member 50 and the first electrode, wherein "substantially the same” should be understood to include the same, and There is a slight distance difference. In this way, the first member 40 presses the first conductive portion 23 on the second electrode 30 , and the second member 50 presses the second conductive portion 24 on the first electrode.
  • the ends of the first conductive part 23 and the second conductive part 24 can be welded to improve the alignment of the extended parts of the first conductive part 23 and the second conductive part 24
  • the influence of the electrode assembly 20 after welding, for example, the extended part will drive the first conductive part 23 and the second conductive part 24 to move, thereby causing unstable welding.
  • FIG. 13 is a schematic cross-sectional view of the battery 100 according to the third embodiment of the present application.
  • the structure of the battery 100 in the third embodiment is substantially the same as the structure of the battery 100 in the first embodiment, the difference is that in the third embodiment, the first pole piece 21 and the second pole piece 22 included in the electrode assembly 20 It is formed by winding.
  • FIG. 14 is a schematic three-dimensional structural diagram of the battery 100 in the fourth embodiment of the present application
  • FIG. 15 is a schematic cross-sectional view of the battery 100 shown in FIG. 14 along a C-C square.
  • the structure of the battery 100 in the fourth embodiment is substantially the same as the structure of the battery 100 in the first embodiment, the difference is that the electrode assembly 20 is a wound structure, and the second electrode 30 is provided on the first cover
  • the body 12 is close to the surface of the electrode assembly 20, the first conductive part 23 is connected to the second electrode 30, the first conductive part 23 is not squeezed by the first member 40, but is The second wall 112 fixes the electrode assembly 20 .
  • the second member 50 is arranged to press the second conductive portion 24 so that the second conductive portion 24 is in close contact with the first electrode. .
  • a first layer 60 is provided between the first cover 12 and the bottom case 11, and the first layer 60 is used to seal the first cover 12 and the bottom case 11 to avoid liquid, For example, water flows into the bottom case 11 .
  • the first layer 60 is a sealant. It can be understood that, in other embodiments, the first layer 60 is not limited to this, and can also be replaced with other structures with equivalent functions or functions.
  • FIG. 16 is a schematic perspective view of the battery 100 shown in FIG. 14 .
  • the content shown by the dotted line is the electrode assembly 20 and the second member 50 , the second member 50 and the second conductive part 24 are overlapped, and the second conductive part 24 has been closely attached to the The first electrode enables the second conductive portion 24 to be easily welded with the first electrode.
  • FIG. 17 The content shown in FIG. 17 is a schematic top view of the battery 100 shown in FIG. 14 after removing the first cover 12 .
  • the size of the second member 50 needs to be adapted to the second conductive portion 24 and the main body of the electrode assembly 20 to ensure that the electrode assembly 20 can be assembled smoothly into the housing 10 , and ensure that the second member 50 can press the second conductive portion 24 .
  • FIG. 18 is a schematic three-dimensional structural diagram of an electronic device 200 according to a fifth embodiment of the present application.
  • the electronic device 200 includes a main body 80 and the battery 100 described in any of the above embodiments.
  • the battery 100 is accommodated in the main body 80 and is used to provide electrical energy to the main body 80 .
  • the electronic device 200 adopts the battery 100 in any of the above-mentioned embodiments, and thus has all the beneficial effects of the battery 100, which will not be repeated here.
  • the electronic device 200 may be a smart wearable device, such as a Bluetooth headset, or a small lighting device. It can be understood that the specific type of the electronic device 200 is not limited to this, and other structures may also be used.
  • the body 80 is a headset structure, and the battery 100 is used to provide power to the headset.
  • the body 80 is replaced accordingly.
  • the electrode assembly can be buffered when the battery is subjected to external impact
  • the impact of other parts in the 20 on the first conductive part 23 improves the connection reliability between the first conductive part 23 and the electrode;
  • the first part 40 is located between the first conductive part 23 and the pressing knife. between the first conductive parts 23 and the electrodes, thereby ensuring the reliability of welding between the first conductive parts 23 and the electrodes, and due to the isolation effect of the first material 40, the pressing knife is avoided during the welding process. damage.
  • the first conductive portion 23 is closely attached to the first electrode, thereby It can further suppress the shaking of the first conductive part 23 when subjected to external impact, improve the connection reliability between the first conductive part 23 and the electrode, and in the battery preparation process, it can replace the original pressing process, improve the The convenience of welding between the electrode assembly 20 and the electrodes. At the same time, the stability of welding is guaranteed.

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

Abstract

本申请提供一种电池，包括电极组件、第一电极、第二电极和第一部材，电极组件包括具有第一面和第二面的第一导电部；第一电极包括具有第一开口的第一凹部，第一凹部包括第一壁与第二壁，并且电极组件收容于第一凹部；第二电极设于第一开口；第一面包括与第一电极或第二电极相接的第一区域；第一部材含有绝缘材料，且第一部材包括第一端面，第一端面与第二面相接。本申请还涉及一种电子设备。通过设置第一部材，在电池受到外部冲击时，能够缓冲电极组件中的其他部分对第一导电部的冲击，提高第一导电部与电极之间的连接可靠性，从而提供使用寿命更长的电池以及电子设备。

Description

电池及电子设备 技术领域
本申请涉及电池技术领域，尤其涉及一种电池及电子设备。
背景技术
随着消费电子行业进入高速成长阶段，例如蓝牙耳机市场的快速增长，使得锂离子电池的需求快速提升。面对激烈的行业竞争，提高电池的可靠性对于快速占领市场份额至关重要。
现有的锂离子电池通常采用极耳或极耳与转接片焊接后再与极柱或者壳体焊接，以保证极片与电极的电连接，其中极耳或转接片与壳体或者极柱连接的可靠性难以保证，特别是在跌落等外部冲击过程中存在脱离的风险。
发明内容
有鉴于此，有必要提供一种电池及电子设备，旨在能够确保极耳或转接片与电极之间的连接，降低在受到外部冲击时，极耳或转接片与电极之间的连接脱落的风险，提供寿命更长的电池及电子设备。
本申请的实施例提供一种电池，包括电极组件、第一电极、第二电极和第一部材，所述电极组件包括具有第一面和第二面的第一导电部；所述第一电极包括具有第一开口的第一凹部，所述第一凹部包括第一壁与第二壁，并且所述电极组件收容于所述第一凹部；所述第二电极设于所述第一开口；所述第一面包括与所述第一电极或所述第二电极相接的第一区域，所述第一部材含有绝缘材料，且所述第一部材包括第一端面，所述第一端面与所述第二面相接。
通过采用上述的电池，第一导电部具有与电极相接的第一面，同时，在第一导电部的第二面设置第一部材，在电池受到外部冲击时，能够缓冲电极组件中的其他部分对第一导电部的冲击，提高第一导电部与电极之间的连接可靠性。
一些实施方式中，沿垂直于所述第一区域的第一方向观察，所述第一区域与所述第一部材具有重合的部分。
一些实施方式中，所述第一部材还包括与所述第一端面相对的第二端面，所述第二端面与所述电极组件相接。
一些实施方式中，所述第一部材的至少部分与所述第二壁相接。
一些实施方式中，所述第一部材的至少部分与所述第二壁粘接。
一些实施方式中，所述第一开口设于所述第二壁。
一些实施方式中，所述第一面包括与所述第二电极相接的第一区域，沿垂直于所述第一区域的第一方向观察，所述第一部材具有与所述第一开口不重合的部分。
一些实施方式中，所述第一部材在与所述第一壁垂直的第二方向上，设置于比所述第二壁的中心部离所述第一壁更远的位置。
一些实施方式中，沿垂直于所述第一区域的第一方向观察，所述第一部材具有与所述第 一开口不重合的部分。
一些实施方式中，所述电池还包括覆盖所述第一凹部的第一盖体。
一些实施方式中，所述第二壁包括弯曲的第二区域和平坦的第三区域，所述第一开口设于所述第三区域。
一些实施方式中，所述电极组件还包括具有第三面和第四面的第二导电部，所述第三面包括与所述第一电极和所述第二电极中远离所述第一导电部的电极相接的第四区域；所述电池还包括第二部材，所述第二部材含有绝缘材料，且所述第二部材包括第三端面，所述第三端面与所述第四面相接。
一些实施方式中，沿垂直于所述第四区域的第三方向观察，所述第四区域与所述第二部材具有重合的部分。
一些实施方式中，所述第二部材还包括与所述第三端面相对的第四端面，所述第四端面与所述电极组件相接。
一些实施方式中，所述第二部材的至少一部分与所述第二壁相接。
一些实施方式中，所述第二部材的至少一部分与所述第二壁粘接。在一些实施方式中，所述第二部材在所述第二导电部相对的两侧与所述第二壁粘接。
一些实施方式中，沿垂直于所述第四区域的第三方向观察，所述第二部材具有与所述第四区域不重合的部分。
一些实施方式中，所述第二部材在与所述第一壁垂直的第二方向上，设置于比所述第二壁的中心部离所述第一壁更远的位置。
本申请的实施例还提供一种电子设备，包括上述中任一所述的电池。
本申请提供的电池及电子设备，通过在第一导电部和电极组件之间设置第一部材，降低了第一导电部受到的冲击，提升了连接可靠性，从而获得了使用寿命更长的电池及电子设备。
附图说明
图1为本申请第一实施例中电池的立体结构示意图。
图2为图1所示的电池的主视示意图。
图3为图1所示的电池沿A-A方向的剖视示意图。
图4为图1所示的另一种电池沿A-A方向的剖视示意图。
图5为图2所示的电池的透视示意图。
图6为图2所示的电池在另一实施例中的透视示意图。
图7为图2所示的电池另一角度的透视示意图。
图8为图2所示的电池在另一实施例中另一角度的透视示意图。
图9为图1所示的电池去掉第一盖体后的立体结构示意图。
图10为图9所示的电池去掉第一盖体后的俯视示意图。
图11为本申请第二实施例中电池的立体结构示意图。
图12为图11所示电池沿B-B方向的剖视示意图。
图13为本申请第三实施例中电池的剖视示意图。
图14为本申请第四实施例中电池的立体结构示意图。
图15为图14所示的电池沿C-C方向的剖视示意图。
图16为图14所示的电池的透视示意图。
图17为图14所示的电池去掉第一盖体后的俯视示意图。
图18为本申请第五实施例中电子设备的立体结构示意图。
主要元件符号说明
电池                            100
壳体(第一电极)                  10
底壳                            11
第一壁                          111
第二壁                          112
第二区域                        1121
第三区域                        1122
第一开口                        113
第一凹部                        114
第一盖体                        12
第三壁                          121
第二开口                        1211
第二盖体                        122
电极组件                        20
第一极片                        21
第二极片                        22
第一导电部                      23
第一面                          231
第一区域                        2311
第二面                          232
第一金属部                      233
第一转接部                      234
第二导电部                      24
第三面                          241
第四区域                        2411
第四面                          242
第二金属部                      243
第二转接部                      244
隔离膜                          25
第二电极                        30
第一部材                        40
第一端面                        41
第二端面                        42
第二部材                         50
第三端面                         51
第四端面                         52
第一层                           60
绝缘垫片                         70
电子设备                         200
本体                             80
具体实施方式
下面对本申请实施例中的技术方案进行清楚、详细地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
下文，将详细地描述本申请的实施方式。但是，本申请可体现为许多不同的形式，并且不应解释为限于本文阐释的示例性实施方式。而是，提供这些示例性实施方式，从而使本申请透彻的和详细的向本领域技术人员传达。
另外，为了简洁和清楚，在附图中，各种组件、层的尺寸或厚度可被放大。遍及全文，相同的数值指相同的要素。如本文所使用，术语“及/或”、“以及/或者”包括一个或多个相关列举项目的任何和所有组合。另外，应当理解，当要素A被称为“连接”要素B时，要素A可直接连接至要素B，或可能存在中间要素C并且要素A和要素B可彼此间接连接。
进一步，当描述本申请的实施方式时使用“可”指“本申请的一个或多个实施方式”。
本文使用的专业术语是为了描述具体实施方式的目的并且不旨在限制本申请。如本文所使用，单数形式旨在也包括复数形式，除非上下文另外明确指出。应进一步理解，术语“包括”，当在本说明书中使用时，指存在叙述的特征、数值、步骤、操作、要素和/或组分，但是不排除存在或增加一个或多个其他特征、数值、步骤、操作、要素、组分和/或其组合。
空间相关术语，比如“上”等可在本文用于方便描述，以描述如图中阐释的一个要素或特征与另一要素(多个要素)或特征(多个特征)的关系。应理解，除了图中描述的方向之外，空间相关术语旨在包括设备或装置在使用或操作中的不同方向。例如，如果将图中的设备翻转，则描述为在其他要素或特征“上方”或“上”的要素将定向在其他要素或特征的“下方”或“下面”。因此，示例性术语“上”可包括上面和下面的方向。应理解，尽管术语第一、第二、第三等可在本文用于描述各种要素、组分、区域、层和/或部分，但是这些要素、组分、区域、层和/或部分不应受这些术语的限制。这些术语用于区分一个要素、组分、区域、层或部分与另一要素、组分、区域、层或部分。因此，下面讨论的第一要素、组分、区域、层或部分可称为第二要素、组分、区域、层或部分，而不背离示例性实施方式的教导。
本申请的实施例提供一种电池，包括电极组件、第一电极、第二电极和第一部材，所述电极组件包括具有第一面和第二面的第一导电部；所述第一电极包括具有第一开口的第一凹部，所述第一凹部包括第一壁与第二壁，并且所述电极组件收容于所述第一凹部；所述第二电极设于所述第一开口；所述第一面包括与所述第一电极或所述第二电极相接的第一区域， 所述第一部材含有绝缘材料，且所述第一部材包括相对的第一端面，所述第一端面与所述第二面相接。
通过采用上述的电池，第一导电部具有与电极相接的第一面，同时，在第一导电部的第二面设置第一部材，在电池受到外部冲击时，能够缓冲电极组件中的其他部分对第一导电部的冲击，提高第一导电部与电极之间的连接可靠性。另外，在制备电池的过程中为了保证连接的可靠性，要求入壳后的裸电芯的极耳或转接片与壳体或者极柱紧密贴合，针对该问题，通常采用压刀入壳，压刀插入裸电芯与极耳或转接片之间，并在焊接时压紧极耳或转接片，使得极耳或转接片与壳体或者极柱紧贴。但是压刀入壳精度及行程难以调试及控制，且在焊接过程中，由于压刀需压紧极耳或转接片，容易导致压刀与极耳或转接片之间焊接在一起，从而导致压刀表面平整度降低，难以保证后续焊接过程中极耳或转接片与壳体或者极柱的紧密贴合，而通过在第一导电部的第二面设置第一部材，还可以使得第一部材位于第一导电部与压刀之间，从而便于压刀将第一导电部与电极压紧，保证第一导电部与电极之间焊接的可靠性，另外，由于第一部材的隔离作用，可避免焊接过程中对压刀的损伤，从而简化了生产工艺，降低了生产成本。
本申请的实施例还提供一种电子设备，电子设备包括上述的电池。电子设备通过采用该电池，提升了自身的可靠性，并且因电池的成本降低，也整体降低了电子设备的成本。
下面将结合附图对一些实施例做出说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
请参阅图1、图2和图3，为了更好的对电池100结构进行说明，将结合X、Y、Z坐标轴进行说明，其中，X、Y、Z坐标轴两两垂直，垂直于所述第一区域2311的面的方向为X轴方向。本申请的第一实施例提供的所述电池100包括壳体10(第一电极)、电极组件20、第二电极30和第一部材40，所述电极组件20收容于所述壳体(第一电极)10内，所述电极组件20包括具有第一面231和第二面232的第一导电部23，所述第二电极30设于所述壳体10，所述第一部材40位于所述第一导电部23的第二面232，其中，第一部材40能够保护第一导电部23，在电池受到外部冲击时，缓冲电极组件中的其他部分对第一导电部23的冲击，提高第一导电部23与电极之间的连接可靠性。另外，在电池制备过程中，能够使所述第一面231中的第一区域2311紧贴于壳体(第一电极)10或第二电极30上，便于该第一区域2311与所述壳体(第一电极)10或所述第二电极30之间进行焊接。
请参阅图1、图2和图3，所述壳体(第一电极)10包括底壳11和第一盖体12，所述第一盖体12固定于所述底壳11上，以保护所述电极组件20。第二导电部24连接至所述底壳11上，以实现所述底壳11和所述电极组件20之间的电连通。
所述底壳11包括第一壁111和第二壁112，所述第二壁112设于所述第一壁111的周侧，且与所述第一壁111垂直设置，其中，所述第二壁112与所述第一壁111垂直设置的偏差可±5°以内。所述壳体10还设有第一开口113，所述第一开口113开设于所述第二壁112上，所述第二电极30设于所述第一开口113处。所述第一壁111和所述第二壁112共同围设形成第一凹部114，所述电极组件20收容于所述第一凹部114。所述第一盖体12固定于所述第二壁112远离所述第一壁111的一端，且覆盖所述第一凹部114，以使所述电极组件20收容于所述壳体10内部。所述底壳11和所述第一盖体12的材质可包括钢、铜、铝、镍、塑料 中的至少一种；所述第二电极30的材质可包括铜、镍、铝中的至少一种。
请参阅图1和图2，所述第二壁112包括弯曲的第二区域1121和平坦的第三区域1122，所述第二区域1121和所述第三区域1122相接。进一步地，所述第一开口113设于所述第三区域1122，以使得所述壳体10能够更好的固定所述第二电极30，提升所述壳体10和所述第二电极30之间的组装效率，当然，将第一开口113设于如第二区域1121这样的弯曲区域，再将第二电极30设于第一开口113也同样可行。所述第二壁112包括弯曲的第二区域1121，为了能够更进一步的与所述电极组件20相适配，并且，设置弯曲的第二区域1121，增加了所述壳体10的收容空间，能够收容更大体积的电极组件20，提升所述电池100整体的能量密度。
请参阅图1和图3，所述第一盖体12包括第三壁121，所述第一盖体12固定于所述第二壁112上，以覆盖所述第一凹部114。在一实施例中，所述第三壁121上开设有第二开口1211，所述第二开口1211设于与所述第三壁121的几何中心相比，更靠近所述第一开口113的位置，可以通过所述第二开口1211向所述底壳11内注入电解液。而为了能够覆盖所述第二开口1211，所述第一盖体12还包括第二盖体122，所述第二盖体122设于所述第二开口1211位置处，且向所述壳体10的内部延伸，以覆盖所述第二开口1211，避免液体，例如水从所述第二开口1211处流入所述壳体10内，也避免电解液从所述第二开口1211处流出。将所述第二开口1211设于靠近所述第一开口113位置，能够提高注液效率。
在一实施例中，所述第一壁111、所述第二壁112和所述第一开口113为一体成型结构。所述第一盖体12设于所述壳体10，所述第二盖体122设于所述第三壁121。
请参阅图3，所述电极组件20包括第一极片21、第二极片22和隔离膜25，所述隔离膜25设于所述第一极片21和所述第二极片22之间。
层叠所述第一极片21、隔离膜25和所述第二极片22形成叠片式电极组件20。该种电极组件20的形成方式在电池100制造领域较为常见，在此，不再进行赘述。
所述电极组件20还包括具有第一面231和第二面232的第一导电部23，所述第一面231和所述第二面232为所述第一导电部23的相对两表面。在该实施例中，所述第一导电部23与所述第一极片21连接。在一些实施例中，所述第一导电部23也可以为所述第一极片21的一部分。所述电极组件20通过所述第一导电部23与所述第二电极30连接，从而实现所述电极组件20和所述第二电极30之间的电连通。所述第一导电部23和所述第二电极30之间可通过焊接和/或具有导电性的粘接材料进行连接。
在该实施例中，将所述电极组件20设于所述壳体10内后，所述第一导电部23的第一面231相比于第二面232更靠近所述第二电极30，且所述第一面231包括与所述第二电极30相接的第一区域2311，所述第一区域2311与所述第二电极30之间可通过焊接和/或具有导电性的粘接材料进行连接，以实现所述电极组件20与所述第二电极30之间的电连通。
在一些实施例中，所述第一导电部23包括多个第一金属部233和第一转接部234，所述第一金属部233与所述第一极片21连接，在一些实施例中，所述第一金属部233为从所述第一极片21延伸出的一部分，多个所述第一金属部233堆叠后形成一个整体且通过焊接的方式连接，所述第一转接部234与形成一个整体的多个所述第一金属部233焊接，所述第一面231为所述第一转接部234与所述第二电极30相对应的面。
在一实施例中，所述第一极片21为正极极片，正极极片包括正极集流体和设置在正极集流体上的正极活性材料层。正极活性材料层可以位于正极集流体一侧或两侧上。在一些实施例中，正极集流体可以采用铝箔，当然，也可以采用本领域常用的其他正极集流体。在一些实施例中，正极活性材料可以包括钴酸锂、锰酸锂、磷酸铁锂、磷酸锰铁锂、镍钴锰酸锂、镍钴铝酸锂或镍锰酸锂中的至少一种，上述正极活性材料可以经过掺杂和/或包覆处理。所述第一金属部233为正极极耳。其中，正极极耳与正极极片之间的连接内容，在电池100制造技术领域较为常见，在此，不再进行赘述。
通过设置所述第一转接部234，更加便于所述电极组件20与所述第二电极30之间的连接。可以理解的是，在其他实施例中，也可取消设置所述第一转接部234，将所述第一金属部233延长，以使得所述第一金属部233直接与所述第二电极30连接。
请参阅图3，所述电极组件20还包括具有第三面241和第四面242第二导电部24，所述第三面241和所述第四面242为所述第二导电部24的相对两表面。在该实施例中，所述第二导电部24与所述第二极片22连接。在一些实施例中，所述第二导电部24也可以为所述第二极片22的一部分。所述电极组件20通过所述第二导电部24与所述壳体10连接，从而实现所述电极组件20和所述壳体10之间的电连通。所述第二导电部24和所述壳体10之间可通过焊接和/或具有导电性的粘接材料进行连接。
在该实施例中，将所述电极组件20设于所述壳体10内后，所述第二导电部24的第三面241相比于第四面242更靠近所述壳体10，且所述第三面241包括与所述壳体10相接的第四区域2411，所述第四区域2411与所述壳体10之间可通过焊接和/或具有导电性的粘接材料进行连接，以实现所述电极组件20与所述壳体10之间的电连通。
在一些实施例中，所述第二导电部24包括多个第二金属部243和第二转接部244，所述第二金属部243与所述第二极片22连接，在一些实施例中，所述第二金属部243为从所述第二极片22延伸出的一部分，多个所述第二金属部243堆叠后形成一个整体且通过焊接的方式连接，所述第二转接部244与形成一个整体的多个所述第二金属部243焊接，所述第三面241为所述第二转接部244与所述壳体10相对应的面。
在一实施例中，所述第二极片22为负极极片，负极极片可以包括负极集流体和设置在负极集流体上的负极活性材料层。负极活性材料层可以设置在负极集流体的一侧或两侧上。在一些实施例中，负极集流体可以采用铜箔、镍箔或碳基集流体中的至少一种。在一些实施例中，负极活性材料层可以包括负极活性材料。在一些实施例中，负极活性材料包括碳材料或硅基材料中的至少一种。在一些实施例中，碳材料包括石墨、硬碳、软碳中的至少一种；硅基材料包括硅、硅氧化合物、硅碳化合物或硅合金中的至少一种。所述第二金属部243为负极极耳。其中，负极极耳与负极极片之间的连接内容，在电池100制造技术领域较为常见，在此，不再进行赘述。
通过设置所述第二转接部244，更加便于所述电极组件20与所述壳体10之间的连接。可以理解的是，在其他实施例中，也可取消设置所述第二转接部244，将所述第二金属部243延长，以使得所述第二金属部243直接与所述壳体10连接。
请参阅图3，所述第二电极30设于所述第一开口113处，且所述第二电极30卡固于形成所述第一开口113的外壁。所述第二电极30和所述第二壁112之间设有绝缘垫片70，用 于将所述第二电极30和所述第二壁112之间隔绝开，避免二者之间出现电连通而导致所述电池100出现短路的情况。
所述第二电极30为极柱，所述第一导电部23与极柱之间进行焊接，以实现所述电极组件20与极柱之间的电导通。可以理解的是，在其他实施例中，所述第二电极30不限于此，还可替换为其他具有等同功效或作用的结构。
请参阅图3，当将所述电极组件20设于所述壳体10内时，所述第一部材40设于所述第一导电部23的第二面232，其第一端面41与所述第二面232相接。在一实施例中，所述第一部材40呈片状结构，且所述第一部材40含有绝缘材料，以隔绝第二极片22与第一导电部23，减少二者出现电连通导致所述电池100出现短路的情况。其中，第一部材40还能够保护第一导电部23，在电池受到外部冲击时，缓冲电极组件中的其他部分对第一导电部23的冲击，提高第一导电部23与电极之间的连接可靠性。所述绝缘材料可包括聚合物，聚合物具有优异的绝缘性，且硬度较低，在受到冲击时能够发生形变，起到缓冲作用。在一些实施例中，所述聚合物包括聚乙烯、聚丙烯、聚氨酯、丁苯橡胶、丙烯酸酯类弹性体中的至少一种。在一些实施例中，与所述壳体10、第二电极30或第一导电部23相比，所述第一部材40的弹性更高。在一些实施例中，所述第一部材40的弹性系数范围为0.2-2N/mm。
请参阅图4，所述第一部材40还包括与所述第一端面41相对的第二端面42，所述第二端面42与所述电极组件20的主体部分相接，其中，所述电极组件20的主体部分为包括第一极片21、第二极片22、隔离膜25以及极耳与极片相邻部分形成的整体结构，在受到外部冲击时，通过第一部材40的第二端面42与电极组件20的主体部分相接，可以抑制电极组件20在壳体10内的晃动，减少对第一导电部23的拉扯，降低第一导电部23与电极之间的连接脱落的风险，从而增加电池的使用寿命。在一实施例中，所述第一部材40包括方形块结构、矩形块结构、圆柱状结构，且所述第一部材40含有绝缘材料。在一些实施例中，所述第一部材40为绝缘泡棉。
可以理解的是，在其他实施例中，所述第一部材40的形状不限于此。例如，还可替换为椭圆柱等其他柱状形状。制成所述第一部材40的绝缘材料也不限于上述的绝缘泡棉，还可将其替换为其他具有等同功效或作用的结构。
在一些实施例中，所述第一部材40设置在第一导电部23和电极组件20的主体部分之间时是采用过盈配合，以使所述第一导电部23通过所述第一部材40的挤压，紧贴于所述第二电极30上，从而可替代原有的压刀工艺，提升所述第二电极30与所述第一导电部23之间焊接的便捷性。
请参阅图3，所述第一部材40的至少部分可与所述第二壁112相接。此时，第一部材40可保护第一导电部23与电极连接区域的边缘，保证连接的可靠性。在一些实施例中，所述第一部材40的至少部分可与所述第二壁112相粘接。通过第一部材40与第二壁112之间的粘接作用，可使得第一导电部23紧贴于第二电极30上，从而能够进一步抑制在受到外部冲击时第一导电部的晃动，保证连接的可靠性，并且，在电池制备过程中可替代原有的压刀工艺，提升所述第二电极30与所述第一导电部23之间连接的便捷性。在一些实施例中，所述第一部材40在所述第一导电部23相对的两侧与所述第二壁112粘接，可进一步确保紧贴效果，提高焊接的可靠性。在一些实施例中，所述第一部材40的表面具有粘结材料，例如， 所述第一部材40可为绝缘胶带。
请参阅图4和图5，图5为所述电池100的透视示意图，其中虚线表示设于壳体10内部的结构，具体为所述电极组件20和第一部材40。沿垂直于所述第一区域2311的第一方向观察，所述第一区域2311与所述第一部材40具有重合的部分。其中，所述第一方向为沿X轴方向。
如图5所示，其中虚线所示的内容为电极组件20和第一部材40，能够观察到，所述第一部材40与所述第一区域2311存在重合的部分，即第一导电部23与电极的连接区域表面具有第一部材40，能够缓冲电极组件20中的其他部分直接对连接区域的冲击，提高第一导电部23与电极之间的连接可靠性；另外，在制备电池过程中，能够使得所述第一部材40在挤压所述第一导电部23时，所述第一面231上的第一区域2311更好的紧贴于所述第二电极30上，便于所述第一区域2311和所述第二电极30之间进行焊接，提升所述第一导电部23与所述第二电极30之间焊接的稳定性。
请参阅图5，在一实施例中，沿X轴方向观察，所述第一部材40具有与所述第一开口113不重合的部分。即所述第一部材40存在超出所述第一开口113的部分，如此设置，使得所述第一部材40在沿其他方向上，存在大于所述第一开口113的部分，所述第一部材40能够更好地保护第一开口113处的第一导电部23与第二电极30之间和/或第二电极30与壳体10之间的连接结构，缓冲该处受到的冲击，提高连接的稳定性；在电池制备过程中，所述第一部材40能够更好地压紧所述第一导电部23，使得更大面积的所述第一导电部23贴合于位于所述第一开口113处的第二电极30上，从而充分保证所述第一导电部23有足够的区域能够与所述第二电极30进行连接，保证二者之间连接的稳定性。
请参阅图4，在一实施例中，所述第一部材40在与所述第一壁111垂直的第二方向上，设置于比所述第二壁112的中心部离所述第一壁111更远的位置。其中，所述第二方向为沿Z轴方向。在沿Z轴的方向上，以所述第二壁112的中心部为基准，所述第一部材40设置在所述第二壁112的中心部的上方，从而使得所述第一部材40远离所述第一壁111。其中，所述第二壁112的中心部为中点位置处。
将所述第一部材40设于离所述第一壁111更远的位置，使得所述第一部材40能够更好的压紧所述第一导电部23中的第一转接部234，避免所述第一部材40与堆叠的多个所述第一金属部233之间发生干涉，从而影响所述第一金属部233与所述第一转接部234之间的连接。
请参阅图6，在一实施例中，沿着图6中Y轴方向，还存在所述第一部材40的长度小于所述第一导电部23长度的情况。
请参阅图3，所述电池100还包括第二部材50，当将所述电极组件20设于所述壳体10内时，所述第二部材50设于所述第二导电部24的第四面242，其第三端面51与所述第四面242相接。在一实施例中，所述第二部材50大致呈片状结构，且所述第二部材50含有绝缘材料，以隔绝第一极片21与第二导电部24，减少二者出现电连通导致所述电池100出现短路的情况。其中，第二部材50还能够保护第二导电部24，在电池受到外部冲击时，缓冲电极组件20中的其他部分对第二导电部24的冲击，提高第二导电部24与电极之间的连接可靠性。所述绝缘材料可包括聚合物，聚合物具有优异的绝缘性，且硬度较低，在受到冲击时能 够发生形变，起到缓冲作用。在一些实施例中，所述聚合物包括聚乙烯、聚丙烯、聚氨酯、丁苯橡胶、丙烯酸酯类弹性体中的至少一种。在一些实施例中，与所述壳体10或所述第二导电部24相比，所述第二部材50的弹性更高。在一些实施例中，所述第二部材50的弹性系数范围为0.2-2N/mm。
请参阅图4，所述第二部材50还包括与所述第三端面51相对的第四端面52，所述第四端面52与所述电极组件20的主体部分相接，在受到外力冲击时，通过第二部材50的第四端面52与电极组件20的主体部分相接，可以抑制电极组件20在壳体10内的晃动，减少对第二导电部24的拉扯，降低第二导电部24与电极脱离的风险，从而增加电池的寿命。在一实施例中，所述第二部材50大致呈方形块结构，且所述第二部材50含有绝缘材料。在一些实施例中，所述第二部材50为绝缘泡棉。
可以理解的是，在其他实施例中，所述第二部材50的形状不限于此。例如，还可替换为圆柱体形等其他形状。制成所述第二部材50的绝缘材料也不限于上述的绝缘泡棉，还可将其替换为其他具有等同功效或作用的结构。
在一些实施例中，所述第二部材50设置在第二导电部24和电极组件20的主体部分之间时是采用过盈配合，以使所述第二导电部24通过所述第二部材50的挤压，紧贴于所述电池100的第二壁112上，从而可替代原有的压刀工艺，提升所述第二壁112与所述第二导电部24之间焊接的便捷性。
请参阅图3，所述第二部材50的至少部分可与所述第二壁112相接。此时，第二部材50可充分保护第二导电部24与电极连接区域的边缘，保证连接的可靠性。在一些实施例中，所述第二部材50的至少部分可与所述第二壁112相粘接。通过第二部材50与第二壁112之间的粘接作用，可使得第二导电部24紧贴于第二壁112上，从而能够进一步抑制在受到外部冲击时第二导电部24的晃动保证连接的可靠性，并且，可替代原有的压刀工艺，提升所述第二壁112与所述第二导电部24之间焊接的便捷性。在一些实施例中，所述第二部材50在所述第二导电部24相对的两侧与所述第二壁112粘接，可进一步确保紧贴效果，提高焊接的可靠性。在一些实施例中，所述第二部材50的表面具有粘结材料，例如，所述第二部材50可为绝缘胶带。
在一实施例中，所述电池100包括第一电极，所述第一电极包括所述电池100的第二壁112，所述第二壁112采用导电材料制成，以使其能够充当所述电池100的第一电极。所述第二导电部24通过所述第二部材50的挤压，紧贴于所述第一电极上，提升所述第一电极与所述第二导电部24之间焊接的可靠性和便捷性。
请参阅图4和图7，图7为所述电池100另一视角的透视示意图，其中虚线表示设于壳体10内部的结构。在一实施例中，所述第二部材50的至少一部分与所述第二壁112相接。当沿Y轴方向，所述第二部材50延伸的距离大于第二导电部24沿Y轴延伸的距离时，所述第二部材50超出所述第二导电部24的部分与所述第二壁112相接，使得在电池制备过程中，所述第二部材50在挤压所述第二导电部24时，沿Y轴方向的所述第二导电部24能够紧贴于所述第一电极上，便于所述第二导电部24与所述第一电极之间的连接，提升连接的稳定性。
在一实施例中，沿垂直于所述第四区域2411的第三方向观察，所述第四区域2411与所述第二部材50具有重合的部分。其中，所述第三方向为X轴的反方向。
如图7所示，其中虚线所示的内容为电极组件20和第二部材50，能够观察到，所述第二部材50与所述第四区域2411存在重合的部分，即第二导电部24与电极的连接区域表面具有第二部材50，能够缓冲电极组件中的其他部分直接对连接区域的冲击，提高第二导电部24与电极之间的连接可靠性；在制备电池过程中，能够使得所述第二部材50在挤压所述第二导电部24时，所述第三面241上的第四区域2411更好的紧贴于所述第一电极上，便于所述第四区域2411和所述第一电极之间进行连接，提升所述第二导电部24与所述第一电极之间连接的稳定性。
在一些实施例中，形成所述第一电极的第二壁112为平坦的区域，以使得所述第二部材50更好的抵持所述第二导电部24于平坦的第一电极上，提升所述第二导电部24与所述第一电极之间连接的稳定性。
请参阅图4，在一实施例中，所述第二部材50在与所述第一壁111垂直的第二方向上，设置于比所述第二壁112的中心部离所述第一壁111更远的位置。其中，所述第二方向为沿Z轴方向。在沿Z轴的方向上，以所述第二壁112的中心部为基准，所述第二部材50设置在所述第二壁112的中心部的上方，从而使得所述第二部材50远离所述第一壁111。其中，所述第二壁112的中心部为中点位置处。
将所述第二部材50设于离所述第一壁111更远的位置，使得所述第二部材50能够更好的压紧所述第二导电部24中的第二转接部244，避免所述第二部材50与堆叠的多个所述第二金属部243之间发生干涉，从而影响所述第二金属部243与所述第二转接部244之间的连接。
在该实施例中，所述第一部材40和所述第二部材50的结构相同，且起到的作用也是相同的。所述第一部材40抵持于所述第一导电部23，所述第二部材50抵持于所述第二导电部24，使得所述第一导电部23与第二电极30之间紧密贴合，第二导电部24与第一电极之间紧密贴合，提高连接的可靠性。
请参阅图8，在一实施例中，沿着图8中Y轴方向，还存在所述第二部材50的长度小于所述第二导电部24长度的情况。
请参阅图9和图10，图9为所述电池100去掉第一盖体12后的立体结构示意图，图9为图7所示的电池100去掉第一盖体12后的俯视示意图。可以看到，所述第一部材40和所述第二部材50位于所述电池100的相对两端。
在一些实施例中，当所述第一部材40和所述第二部材50均为绝缘泡棉时，绝缘泡棉由于具有多孔结构，能够提供充分的缓冲作用，降低第一导电部或第二导电部受到的冲击，从而提升连接的可靠性，增加电池的寿命。绝缘泡棉的材料可为聚丙烯(PP)、聚氨酯(PU)中的至少一种。可以理解的是，在其他实施例中，绝缘泡棉的材料不限于此。
设置所述第一部材40和所述第二部材50时，可先将所述电极组件20设于所述壳体10内，再放置所述第一部材40和所述第二部材50，也可将第一部材40、第二部材50与所述电极组件20组装好后，再一起放入所述壳体10内。
请再参阅图4，在另一实施例中，所述第一导电部23和所述第一部材40的设置与上述第一实施例相反。具体的，所述电池100包括壳体10、电极组件20、第二电极30和第一部材40，各结构之间的设置关系及连接关系与第一实施例中的电池100结构大致相同，区别在 于：第一实施例中的第二导电部24为该实施例中的第一导电部23，第一实施例中的第二部材50为该实施例中的第一部材40。
具体的，所述第一部材40在与所述第一壁111垂直的第二方向上，设置于比所述第二壁112的中心部离所述第一壁111更远的位置。进一步地，所述第一部材40的至少一部分与所述第二壁112相接。其中，所述第二壁112形成所述电池100的第一电极。即所述第一部材40设置在所述第一导电部23上，所述第一导电部23与形成所述第一电极的第二壁112进行连接，从而实现所述电极组件20与所述壳体10之间的电连通。
其中，该实施例中的第一导电部23即为上述第一实施例中的第二导电部24，所述第一部材40为上述第一实施例中的第二部材50。
所述电池100还包括第二电极30，所述第二电极30设于所述第一开口113。所述第二导电部24通过所述第二部材50的挤压，紧贴于所述第二电极30上。在该实施例中，所述第二导电部24为上述第一实施例中的第一导电部23，所述第二部材50为上述第一实施例中的第一部材40。
请参阅图11和图12，图11为本申请的第二实施例中电池100的立体结构示意图，图12为图11所示的电池100沿B-B方向的剖视示意图。第二实施例中的电池100结构与第一实施例中的电池100结构大致相同，区别在于，第二实施例中，所述第一盖体12上的第二开口1211设于所述第三壁121的大致中心位置处。将所述第二开口1211设于此位置处，可改善在向所述壳体10内部注入电解液时，电解液流动的过程中，影响所述第一导电部23与所述第一极片21之间的连接，保障所述第一导电部23和所述第一极片21连接的稳定性。
并且，第二实施例中，所述第一导电部23取消所述第一转接部234，所述第二导电部24取消所述第二转接部244，直接使所述第一部材40压紧于所述第一金属部233上，所述第一金属部233与所述第二电极30进行焊接，所述第二部材50压紧于所述第二金属部243上，所述第二金属部243与所述第一电极焊接。
在一些实施例中，在沿Z轴方向上，所述第一部材40延伸的距离与位于所述第一部材40和第二电极30之间的第一导电部23所延伸的距离大致相同，所述第二部材50延伸的距离与位于所述第二部材50和所述第一电极之间的第二导电部24延伸的距离大致相同，其中，“大致相同”应该理解为包括相同，以及存在微小的距离差。如此设置，使得所述第一部材40将所述第一导电部23压紧于第二电极30上、所述第二部材50将所述第二导电部24压紧于所述第一电极上时，能够对所述第一导电部23和所述第二导电部24的端部进行焊接，以改善所述第一导电部23和所述第二导电部24的端部延伸出来的部分对焊接后的电极组件20产生的影响，例如，延伸出来的部分会带动所述第一导电部23和所述第二导电部24移动，从而造成焊接不稳定的情况。
请参阅图13，图13为本申请第三实施例中电池100的剖视示意图。第三实施例中的电池100结构与第一实施例中的电池100结构大致相同，区别在于，第三实施例中，所述电极组件20所包括的第一极片21、第二极片22采用卷绕的方式形成。
请参阅图14和图15，图14为本申请第四实施例中电池100的立体结构示意图，图15为图14所示的电池100沿C-C方形的剖视示意图。第四实施例中的电池100结构与第一实施例中的电池100结构大致相同，区别在于，所述电极组件20为卷绕式的结构，所述第二电极 30设于所述第一盖体12靠近所述电极组件20的表面，所述第一导电部23与所述第二电极30连接，未采用所述第一部材40对所述第一导电部23进行挤压，而是通过所述第二壁112对所述电极组件20进行固定，另外，设置所述第二部材50压紧所述第二导电部24，以使所述第二导电部24紧贴所述第一电极。
所述第一盖体12和所述底壳11之间设有第一层60，所述第一层60用于对所述第一盖体12和所述底壳11进行密封，避免液体，例如水流入底壳11内。
在一些实施例中，所述第一层60为密封胶。可以理解的是，在其他实施例中，所述第一层60不限于此，还可替换为其他具有等同功效或作用的结构。
请参阅图16，图16为图14所示的电池100的透视示意图。其中，虚线所示的内容为电极组件20和第二部材50，所述第二部材50与所述第二导电部24之间存在重合的部分，已将所述第二导电部24紧贴于所述第一电极，使所述第二导电部24便于与所述第一电极进行焊接。
请参阅图17，图17所示的内容为图14所示的电池100去掉第一盖体12后的俯视示意图。与第一实施例相同，第四实施例中，所述第二部材50的尺寸需要适配所述第二导电部24和电极组件20的主体部分，以保证所述电极组件20能够顺畅的组装至所述壳体10内，并且确保所述第二部材50能够压紧所述第二导电部24。另外，需要减少所述第二部材50对第一盖体12组装过程中的干涉。
请参阅图18，图18为本申请第五实施例中电子设备200的立体结构示意图。所述电子设备200包括本体80和上述任一实施例中所述的电池100，所述电池100收容于所述本体80内，用以向所述本体80提供电能。所述电子设备200采用上述任一实施例中的电池100，因而具有该电池100的一切有益效果，在此，不再进行赘述。
在一些实施例中，所述电子设备200可为智能穿戴设备，例如蓝牙耳机，还可为小型照明装置。可以理解的是，所述电子设备200的具体类型不限于此，还可为其他结构。
当所述电子设备200为蓝牙耳机时，所述本体80为耳机结构，所述电池100用于给耳机提供电量。当所述电子设备200为其他结构时，所述本体80相应的进行替换。
综上所述，本申请实施例中提供的电池100及电子设备200，通过在所述第一导电部23的第二面232设置第一部材40，在电池受到外部冲击时，能够缓冲电极组件20中的其他部分对第一导电部23的冲击，提高第一导电部23与电极之间的连接可靠性；另外在制备电池过程中，使得第一部材40位于第一导电部23与压刀之间，从而利于压刀将第一导电部23与电极压紧，保证第一导电部23与电极之间焊接可靠性，且由于第一部材40的隔离作用，避免了焊接过程中对压刀的损伤。此外，通过所述第一部材40的挤压，和/或所述第一部材40与第二壁112的粘接作用，使所述第一导电部23紧贴于所述第一电极，从而能够进一步抑制在受到外部冲击时第一导电部23的晃动，提高第一导电部23与电极之间的连接可靠性，且在电池制备过程中，可替代原有的压刀工艺，提升所述电极组件20与电极之间焊接的便捷性。同时，保证焊接的稳定性。
另外，本技术领域的普通技术人员应当认识到，以上的实施例仅是用来说明本申请，而并非用作为对本申请的限定，只要在本申请的实质精神范围之内，对以上实施例所作的适当改变和变化都落在本申请公开的范围之内。

Claims (14)

  1. 一种电池，包括电极组件、第一电极、第二电极和第一部材，其中，
    所述电极组件包括具有第一面和第二面的第一导电部；
    所述第一电极包括具有第一开口的第一凹部，所述第一凹部包括第一壁与第二壁，并且所述电极组件收容于所述第一凹部；
    所述第二电极设于所述第一开口；
    所述第一面包括与所述第一电极或所述第二电极相接的第一区域；
    所述第一部材含有绝缘材料，且所述第一部材包括第一端面，所述第一端面与所述第二面相接。
  2. 如权利要求1所述的电池，其中，沿垂直于所述第一区域的第一方向观察，所述第一区域与所述第一部材具有重合的部分。
  3. 如权利要求1所述的电池，其中，所述第一部材还包括与所述第一端面相对的第二端面，所述第二端面与所述电极组件相接。
  4. 如权利要求1所述的电池，其中，所述第一部材的至少部分与所述第二壁相接。
  5. 如权利要求1所述的电池，其中，所述第一开口设于所述第二壁。
  6. 如权利要求5所述的电池，其中，所述第一面包括与所述第二电极相接的第一区域，沿垂直于所述第一区域的第一方向观察，所述第一部材具有与所述第一开口不重合的部分。
  7. 如权利要求1所述的电池，满足以下条件的至少一者：
    i)所述第一部材在与所述第一壁垂直的第二方向上，设置于比所述第二壁的中心部离所述第一壁更远的位置；
    ii)沿垂直于所述第一区域的第一方向观察，所述第一部材具有与所述第一区域不重合的部分；
    iii)所述第一部材的至少部分与所述第二壁粘接；
    iv)所述电池还包括覆盖所述第一凹部的第一盖体。
  8. 如权利要求5所述的电池，其中，所述第二壁包括弯曲的第二区域和平坦的第三区域，所述第一开口设于所述第三区域。
  9. 如权利要求1所述的电池，其中，所述电极组件还包括具有第三面和第四面的第二导电部，所述第三面包括与所述第一电极和所述第二电极中远离所述第一导电部的电极相接的第四区域；所述电池还包括第二部材，所述第二部材含有绝缘材料，且所述第二部材包括第三端面，所述第三端面与所述第四面相接。
  10. 如权利要求9所述的电池，其中，沿垂直于所述第四区域的第三方向观察，所述第四区域与所述第二部材具有重合的部分。
  11. 如权利要求9所述的电池，其中，所述第二部材还包括与所述第三端面相对的第四端面，所述第四端面与所述电极组件相接。
  12. 如权利要求9所述的电池，其中，所述第二部材的至少部分与所述第二壁相接。
  13. 如权利要求9所述的电池，满足以下条件的至少一者：
    a)沿垂直于所述第四区域的第三方向观察，所述第二部材具有与所述第四区域不重合的部分；
    b)所述第二部材的至少部分与所述第二壁粘接；
    c)所述第二部材在与所述第一壁垂直的第二方向上，设置于比所述第二壁的中心部离所述第一壁更远的位置。
  14. 一种电子设备，其特征在于，包括权利要求1至13中任一项所述的电池。
PCT/CN2021/084697 2021-03-31 2021-03-31 电池及电子设备 WO2022205188A1 (zh)

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Citations (4)

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US3996066A (en) * 1975-07-22 1976-12-07 Eleanor & Wilson Greatbatch Foundation Lithium-iodine battery
CN109964353A (zh) * 2016-11-30 2019-07-02 松下知识产权经营株式会社 圆筒形电池
CN210866299U (zh) * 2019-11-28 2020-06-26 桑顿新能源科技有限公司 电芯极耳缓冲结构和动力电池
CN111864251A (zh) * 2020-08-31 2020-10-30 深圳市力电电池有限公司 豆式电池结构及其组装方法

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JP7396354B2 (ja) * 2019-04-25 2023-12-12 株式会社村田製作所 二次電池

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Publication number Priority date Publication date Assignee Title
US3996066A (en) * 1975-07-22 1976-12-07 Eleanor & Wilson Greatbatch Foundation Lithium-iodine battery
CN109964353A (zh) * 2016-11-30 2019-07-02 松下知识产权经营株式会社 圆筒形电池
CN210866299U (zh) * 2019-11-28 2020-06-26 桑顿新能源科技有限公司 电芯极耳缓冲结构和动力电池
CN111864251A (zh) * 2020-08-31 2020-10-30 深圳市力电电池有限公司 豆式电池结构及其组装方法

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