WO2008106836A1 - Ensemble de fermeture hermétique d'orifice de batterie et batterie comprenant celui-ci - Google Patents

Ensemble de fermeture hermétique d'orifice de batterie et batterie comprenant celui-ci Download PDF

Info

Publication number
WO2008106836A1
WO2008106836A1 PCT/CN2007/001514 CN2007001514W WO2008106836A1 WO 2008106836 A1 WO2008106836 A1 WO 2008106836A1 CN 2007001514 W CN2007001514 W CN 2007001514W WO 2008106836 A1 WO2008106836 A1 WO 2008106836A1
Authority
WO
WIPO (PCT)
Prior art keywords
explosion
proof
insulating member
battery
assembly
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2007/001514
Other languages
English (en)
French (fr)
Inventor
Huanyu Mao
Fuyong Liu
Junfeng Zhao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Bak Battery Co Ltd
Original Assignee
Shenzhen Bak Battery Co Ltd
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 Shenzhen Bak Battery Co Ltd filed Critical Shenzhen Bak Battery Co Ltd
Priority to US12/529,519 priority Critical patent/US20100159307A1/en
Priority to EP07721087A priority patent/EP2133937A4/en
Priority to JP2009551092A priority patent/JP2010520580A/ja
Publication of WO2008106836A1 publication Critical patent/WO2008106836A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • 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
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • 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
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/578—Devices or arrangements for the interruption of current in response to pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/581—Devices or arrangements for the interruption of current in response to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H01M2200/106—PTC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/20—Pressure-sensitive devices
    • 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
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • H01M50/157—Inorganic material
    • H01M50/159—Metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a battery sealing assembly and battery having a safety device.
  • an explosion-proof device (also called an explosion-proof assembly) capable of discharging gas by opening the valve body when the internal pressure of the battery exceeds a set value has been designed.
  • the explosion-proof cover assembly having the above-mentioned explosion-proof device and the battery container are sealed by mechanical flange fastening.
  • the battery in which the above-mentioned explosion-proof device can be used is a battery container having a high mechanical strength, and the most common one is a cylindrical steel-shell battery container.
  • the mechanical flange is not suitable for sealing, the above-mentioned explosion-proof device cannot be applied to a battery container made of a soft material such as aluminum or aluminum alloy. battery.
  • the battery with low mechanical strength of the current battery container does not use a mechanical flanged seal, but a splicing seal is used, and no safety device is provided on the cover assembly of the battery. Therefore, such a battery is safe. Hidden dangers.
  • the existing explosion-proof device and the other components constituting the explosion-proof cap assembly are not structurally independent, the explosion-proof device cannot be separately fabricated in advance, which causes assembly difficulties and influences. Assembly work efficiency.
  • the object of the present invention is to overcome the technical drawbacks of the above prior art that an explosion-proof device cannot be provided on a cap assembly having a small mechanical strength of a battery container, and to provide a battery container which is high in mechanical strength, such as a steel-shell battery container. It is a battery container with low mechanical strength, such as a battery container made of aluminum, aluminum alloy, etc., which is suitable for a battery sealing assembly with a safety device and is easy to assemble.
  • another object of the present invention is to provide a battery sealing assembly including a sealing seat and an explosion-proof assembly, and the structures of the sealing seat and the explosion-proof assembly are independent and complete, respectively, and are convenient for independent processing and manufacturing, thereby reducing processing costs. Improve the installation efficiency, and the second is to make the sealing seat and explosion-proof components widely applicable to battery containers of various shapes.
  • the utility model relates to a battery sealing assembly which is easy to assemble, comprising an explosion-proof component and a sealing seat.
  • the sealing seat is a cavity with a cavity, and a central portion of the outer surface of the cylinder has a convex annular sealing connection, and the cavity houses the explosion-proof component.
  • the inner wall of the cylinder has an annular sealing groove, and the explosion-proof component is insulated and sealingly fixed in the cylinder body through the annular sealing groove, and the center of the bottom of the cylinder body has a first through hole, and can be introduced into the explosion-proof component through the first through hole
  • An electrode, the top of the barrel has a second through hole through which the electrode can be drawn from the explosion-proof assembly.
  • the explosion-proof assembly includes an insulating member, a cap with a hole, a first explosion-proof film and a pull plate that match the inner wall of the cavity, and the insulating member further extends toward the first through hole to form a third through hole.
  • the outer side of the insulating member supports the mesa, the periphery of the cap is electrically connected to the periphery of the first explosion-proof membrane and is tightly fixed in the annular sealing groove by an insulating member, and a cap is formed between the cap and the first explosion-proof membrane in the middle portion.
  • the middle portion of the first explosion-proof membrane is electrically connected to the pull plate on the outer support table of the insulating member via the third through hole.
  • a protrusion is vertically extended at a side wall of the second through hole of the outer support surface of the insulating member adjacent to the sealing plate, and the pull plate and the sealing plate are separated by the protrusion.
  • the explosion-proof assembly includes a first insulating member, a cap with a hole, a first explosion-proof film, an annular insulating member and a pull plate that match an inner wall of the cavity, the first insulating member has a hollow inner cavity and An annular sealing groove is formed on a sidewall of the inner cavity of the insulating member, a periphery of the perforated cap, a periphery of the first explosion-proof membrane, a periphery of the annular insulating member and the pull plate are sequentially overlapped, and are tightly pressed against the first insulating member In the annular sealing groove, the periphery of the cap is electrically connected to the periphery of the first explosion-proof membrane, and a pressure relief chamber is formed in the middle between the cap and the explosion-proof membrane, and the middle portion of the first explosion-proof membrane passes through the annular insulating member and The pull plate is electrically connected, and the first insulating member is insulated and sealingly fastened in the cylinder body.
  • the explosion-proof assembly includes a first insulating member, a perforated cap, a first explosion-proof membrane, a second explosion-proof membrane, a fastener, and a second insulating member that match an inner wall of the cavity, the first insulation
  • the second insulating member and the fastener each have a hollow inner cavity and have annular sealing grooves on the side walls of the respective inner cavities, and the periphery of the cap is electrically connected to the periphery of the first explosion-proof membrane and is closely pressed and then pressed tightly.
  • a pressure relief chamber is formed in the middle between the cap and the first explosion-proof membrane, and the annular sealing groove of the fastener contains and tightly fixes the first An insulating member and a periphery of the second explosion-proof film located at a lower portion of the first insulating member, the first explosion-proof film and the middle portion of the second explosion-proof film are electrically connected, and the annular sealing groove of the second insulating member is contained and tightly fixed
  • the outer portion of the annular seal groove of the fastener is insulated and sealingly secured within the barrel.
  • a positive temperature coefficient element is also connected in series between the periphery of the cap and the periphery of the first explosion-proof membrane by press-fitting.
  • the pull plate is provided with a vent hole.
  • Each of the explosion-proof membranes is provided with a score.
  • a battery comprising a container, a battery unit housed in the container, and a battery sealing assembly for sealing the container, wherein the battery sealing assembly comprises an explosion-proof assembly and a sealing seat, the sealing seat is a cavity with a cavity, the outer surface of the cylinder
  • the middle portion has a convex annular sealing joint, the cavity houses the explosion-proof assembly, the inner wall of the cylinder has an annular sealing groove, and the explosion-proof component is insulated and sealingly fixed in the cylinder body through the annular sealing groove, the bottom of the cylinder
  • the center has a first through hole through which the electrode can be introduced to the explosion-proof component, the top of the cylinder has a second through hole through which the electrode is taken out from the explosion-proof component, and can pass through
  • the raised annular sealing connection is sealingly connected to the container.
  • the explosion-proof assembly includes an insulating member, a cap with a hole, a first explosion-proof film and a pull plate that match the inner wall of the cavity, and the insulating member further extends toward the first through hole to form a third through hole.
  • the outer side of the insulating member supports the mesa, the periphery of the cap is electrically connected to the periphery of the first explosion-proof membrane, and is tightly fixed in the annular sealing groove of the cylinder by the insulating member, the cap and the first explosion-proof membrane
  • a pressure relief chamber is formed in the middle portion, and the middle portion of the first explosion-proof membrane is electrically connected to the pull plate on the outer support table of the insulating member via the third through hole.
  • a protrusion is vertically extended at a side wall of the second through hole of the outer support surface of the insulating member adjacent to the sealing plate, and the pull plate and the sealing plate are separated by the protrusion.
  • the explosion-proof assembly includes a first insulating member, a cap with a hole, a first explosion-proof film, an annular insulating member and a pull plate that match an inner wall of the cavity, the first insulating member has a hollow inner cavity and An insulating member has an annular sealing groove on a side wall thereof, and the insulating member further extends toward the first through hole to form an outer supporting surface of the insulating member having the third through hole, the periphery of the perforated cap, and the first explosion-proof film
  • the periphery, the annular insulating member and the periphery of the pull plate are sequentially pressed and tightly pressed into the annular sealing groove of the first insulating member, and the periphery of the cap is electrically connected with the periphery of the first explosion-proof film, the cap and the explosion-proof
  • a pressure relief chamber is formed in the middle between the membranes, and the middle portion of the first explosion-proof membrane is electrically connected to the pull plate through the annular
  • the explosion-proof assembly includes a first insulating member, a perforated cap, a first explosion-proof membrane, a second explosion-proof membrane, a fastener, and a second insulating member that match an inner wall of the cavity, the first insulation
  • the second insulating member and the fastener each have a hollow inner cavity and have annular sealing grooves on the side walls of the respective inner cavities, and the periphery of the cap is electrically connected to the periphery of the first explosion-proof membrane and is closely pressed and then pressed tightly.
  • a pressure relief chamber is formed in the middle between the cap and the first explosion-proof membrane, and the annular sealing groove of the fastener contains and tightly fixes the first An insulating member and a periphery of the second explosion-proof film located at a lower portion of the first insulating member, the first explosion-proof film and the middle portion of the second explosion-proof film are electrically connected, and the annular sealing groove of the second insulating member is contained and tightly fixed
  • the outer portion of the annular seal groove of the fastener is insulated and sealingly secured within the barrel.
  • a positive temperature coefficient element is also connected in series between the periphery of the cap and the periphery of the first explosion-proof membrane by press-fitting.
  • the pull plate is provided with a vent hole.
  • Each of the explosion-proof membranes is provided with a score.
  • the sealing seat By installing the sealing seat, the explosion-proof component is sealed in the cavity of the sealing seat.
  • the material of the sealing seat can be flexibly controlled according to the needs.
  • the sealing seat suitable for the material and the battery container can be connected by splicing.
  • the method is sealed or mechanically flanged. Therefore, the present invention is suitable for installation on a battery container having a high mechanical strength (e.g., a steel case), and also for mounting a battery container (e.g., aluminum, aluminum alloy, etc.) having a low mechanical strength.
  • the invention is applicable to batteries of various battery containers, and is not limited by the strength of the battery mechanical container and the shape of the battery, such as a cylindrical aluminum shell battery, a square aluminum shell battery, a cylindrical steel shell electric battery, a square steel shell electric battery, and the like.
  • the explosion-proof component is insulated and sealingly fastened in the sealing seat.
  • the explosion-proof component and the sealing seat are independent and complete structures, one is convenient for independent processing and manufacturing, and, because of the simple structure of the sealing seat, The technology is quite mature, the price is low, the processing cost is low, and the explosion-proof assembly is conveniently and quickly assembled, and the assembly and installation efficiency of the explosion-proof component is greatly improved.
  • the pulling plate is abutted on the outer supporting surface of the insulating member, and the pulling plate is not directly supported on the sealing seat, thereby making the explosion-proof assembly simple and convenient. A separate and complete structure relative to the sealing seat is achieved.
  • the sealing seat adopts a sealing plate and a cylindrical structure extending vertically upward on the sealing plate, and the sealing container is connected through a connecting portion protruding from the outer surface of the sealing plate.
  • the structure of the sealing seat is simpler, which is more convenient for assembling the anti-explosion component conveniently and quickly.
  • the sealing plate structure does not affect the appearance of the sealed battery.
  • the sealing seat adopts a sealing plate and a cylindrical structure extending vertically downward on the sealing plate.
  • the sealing seat can be conveniently designed into any shape, which is the best in round shape, and the circular shape is convenient for processing and manufacturing, and the assembly is convenient.
  • the wall thickness of the sealing seat can be easily adjusted to ensure a good seal in the cavity.
  • the scoring is set on the explosion-proof membrane, which can set the burst pressure value of the explosion-proof membrane more accurately.
  • FIG. 1 is a structural view of a battery sealing assembly.
  • Figure 2 is a structural view of the sealing plate in the figure.
  • Figure 3 is a structural view of the explosion-proof assembly of Figure 1.
  • Figure 4 is a structural view of a battery using the battery sealing assembly of Figure 1.
  • Fig. 5 is a structural view of another battery sealing assembly.
  • Figure 6 is a structural view of the sealing plate of Figure 5.
  • Figure 7 is a diagram showing the structure of a battery using the battery sealing assembly of Figure 5.
  • Figure 8 is a structural view of a battery sealing assembly that is easy to assemble.
  • Figure 9 is a structural view of the cylinder of Figure 8.
  • Fig. 10 is a view showing the structure of a battery of the battery sealing assembly which is easy to assemble using Fig. 8.
  • Figure 11 is a structural view of an explosion-proof assembly.
  • Figure 12 is a structural view of another explosion-proof assembly.
  • Embodiment 1 a battery sealing assembly and a battery, as shown in FIGS. 1-4, the battery sealing assembly includes a sealing seat and an explosion-proof assembly, and the sealing seat includes a sealing plate 1 and a cylindrical body 11 extending upward on the sealing plate 1.
  • the outer side surface of the sealing plate 1 has a connecting portion 10 extending outwardly with respect to the cylindrical body 11.
  • the cavity 11 defines a cavity 16 therein.
  • the cavity 16 houses an explosion-proof assembly, and the sealing plate in the cylindrical body 11 forms a supporting surface 14 .
  • the sealing plate 1 has a first through hole 15 for introducing an electrode, and the end of the cylindrical body 11 is bent toward the center of the cylindrical body 1 to form a bent portion 12 having a second through hole 13 which is taken out from the explosion-proof assembly through the second through hole 13. electrode.
  • An annular seal groove 17 is formed between the bent portion 12 and the support table 14.
  • the explosion-proof assembly is as shown in FIG. 3.
  • the explosion-proof assembly includes an insulating member 6 that matches the inner wall of the cylinder 11, a cap 4 with a hole 41, a positive temperature coefficient element 5, a first explosion-proof membrane 3, and a pull plate 2,
  • the function of the positive temperature coefficient element 5 is to achieve the effect of reducing or cutting off the discharge current when the battery temperature reaches a predetermined temperature, and the insulating member 6 further extends toward the first through hole 15 to form an outer support of the insulator having the third through hole 62.
  • the table 61 is electrically connected to the periphery of the cap 4 contained in the insulating member 6, and the positive temperature coefficient element 5 is electrically connected to the periphery of the first explosion-proof film 3.
  • the explosion-proof film 3 can be made of aluminum. Or a conductive material such as copper, the explosion-proof membrane 3 is provided with a score 31, and the cracking performance of the first explosion-proof membrane 3 can be precisely controlled by changing the depth of the score 31, and the cap 4 and the first explosion-proof membrane 3 are in the middle.
  • a pressure relief chamber 42 is formed.
  • the middle portion of the first explosion-proof membrane 3 is welded to the pull plate 2 abutting on the outer support surface 61 of the insulating member 6 via the third through hole 62.
  • the insulating member 6 is provided with a protruding portion 63.
  • the blasting membrane 3 is provided with a venting hole 21 on the pulling plate 2. If necessary, the venting hole 21 may not be provided on the pulling plate 2, for example, the contact position between the pulling plate 2 and the insulating member 6 is set to be uneven, so that the air pressure can be Balanced by the gap between them. Insulation 6 tight It is tightly fixed in the annular seal groove 17 formed between the bent portion 12 and the support table 14.
  • a battery fabricated by using the above battery sealing assembly includes a steel casing container 7, a battery unit 8 housed in the steel casing container 7, a battery sealing assembly for sealing the container 7 and drawing current from the battery unit 8,
  • the lower cover 9 and the pole 91 are mounted on the lower cover 9 through the insulating member 91.
  • the structure of the battery sealing assembly is as shown in FIGS. 1-3, and the steel shell container 7 and the outer side of the sealing plate 1 are convexly connected. 10 welding, one electrode 81 of the battery unit 8 is electrically connected to the pull plate 2, and the other electrode 81 of the battery unit 8 is electrically connected to the pole 91.
  • Embodiment 2 another battery sealing assembly and a battery, as shown in FIG.
  • the structure of the battery sealing assembly includes a sealing seat and an explosion-proof assembly.
  • the sealing seat includes a sealing plate 1. a cylindrical body 11 extending downwardly from the sealing plate 1.
  • the outer side surface of the sealing plate 1 has a connecting portion 10 extending outwardly with respect to the cylindrical body 11.
  • the cavity 11 defines a cavity 16 therein, and the cavity 16 is provided with an explosion-proof component.
  • the lower portion of the cylindrical body 11 is bent inwardly to form the bent portion 12 to insulate and seal the explosion-proof assembly into the cylindrical body 11.
  • the center of the bent portion 12 has a first through hole 15 through which the first portion
  • the through hole 15 introduces an electrode to the explosion-proof assembly
  • the sealing plate 1 at the top of the cylindrical body 11 has a second through hole 13 through which the electrode is taken out from the explosion-proof assembly.
  • An annular sealing groove 17 is formed between the sealing plate 1 having the second through hole 13 and the bent portion 12.
  • Fig. 7 shows a battery fabricated by using the above battery sealing assembly, comprising an aluminum casing container 7, a battery unit 8 housed in the aluminum casing container 7, a battery sealing assembly for sealing the container 7 and drawing current from the battery unit 8, and a lower portion.
  • the cover plate 9 is mounted on the lower cover 9 via the insulating member 91.
  • the structure of the battery sealing assembly is as shown in Figs. 5 and 6, and the aluminum shell container 7 and the outer side of the sealing plate 1 are convexly connected. 10 Welding, one electrode 81 of the battery unit 8 is electrically connected to the pull plate 2, and the other electrode 81 of the battery unit 8 is electrically connected to the pole 91.
  • the battery sealing assembly of this embodiment is substantially in an "inverted" configuration of the battery sealing assembly of the embodiment 1 in terms of external configuration.
  • this "inverted" structure has the following beneficial effects: 1. When sealing and splicing with the battery container, since the cylinder 11 extends into the container 7, the positioning between the sealing plate 1 and the container 7 is facilitated and the welding is facilitated. . 2. The sealing plate 1 is exposed, instead of the exposed portion 12, the battery has a flatter appearance and provides another novel appearance.
  • Embodiment 3 A battery sealing assembly and a battery that are easy to assemble. As shown in FIGS. 8 and 9, the structure of the battery sealing assembly includes a sealing seat 1 and an explosion-proof assembly.
  • the sealing seat 1 includes a cylinder 11 having a cavity 16 and a battery.
  • the upper portion of the body 11 is bent inwardly to form a bent portion 12, and a lower portion of the tubular body 11 extends inwardly perpendicular to the tubular body 11 to form a support table surface 14, and an annular seal groove 17 is formed between the bent portion 12 and the support table 14.
  • the explosion-proof assembly is insulated and sealingly fastened in the cylinder 11 through the annular sealing groove 17, and the center of the bottom of the cylinder 11 has a first through hole 15 through which the electrode is introduced to the explosion-proof assembly, the top of the cylinder 11 There is a second through hole 13 through which the electrode is taken out from the explosion-proof assembly, and a central portion of the outer surface of the cylindrical body 11 has a convex annular connecting portion 10.
  • FIG. 10 shows a battery fabricated using the above battery sealing assembly, comprising an aluminum casing container 7, a battery unit 8 housed in the aluminum casing container 7, a battery sealing assembly for sealing the container 7 and drawing current from the battery unit 8, and a lower portion.
  • the cover plate 9 is mounted on the lower cover 9 via the insulating member 91.
  • the structure of the battery sealing assembly is as shown in Figs. 8 and 9.
  • the aluminum shell container 7 and the outer side of the sealing plate 1 are convexly connected in a circular shape.
  • the portion 10 is soldered, and one electrode 81 of the battery unit 8 is electrically connected to the pull plate 2, and the other electrode 81 of the battery unit 8 is electrically connected to the pole 91.
  • an explosion-proof assembly as shown in FIG. 11, includes a first insulating member 234, a cap 233 with a hole 210, a positive temperature coefficient original 238, a first explosion-proof film 225, an annular insulating member 240, and a pull plate 224.
  • the first insulating member 234 has a hollow inner cavity and has an annular sealing groove on the side wall of the inner cavity of the first insulating member 234, a periphery of the cap 233 with the hole 210, a periphery of the first explosion-proof film 225, and an annular insulating member.
  • 240 and the periphery of the pull plate 224 are sequentially pressed and tightly pressed into the annular seal groove of the first insulating member, and the periphery of the cap 233 is electrically connected to the periphery of the first explosion-proof film 225, the cap 233 and the explosion-proof film 225.
  • a pressure relief chamber 226 is formed in the middle portion.
  • the pull plate 224 is provided with a venting hole 2241.
  • the pull plate 224 abuts against the insulating member 240 and is welded to the center of the first explosion-proof film 225.
  • the explosion-proof membrane 225 has a score 227, and the fracture performance of the first explosion-proof membrane 225 can be precisely controlled by changing the depth of the score 227.
  • the embodiment provides an explosion-proof assembly which is simple in structure and easy to manufacture, and can be conveniently assembled in the sealing seat described in the foregoing embodiments.
  • Embodiment 5 another explosion-proof assembly, as shown in FIG. 12, includes a first insulating member 423, a cap 437 with a hole 4271, a positive temperature coefficient original 424, a first explosion-proof film 421 having a notch 421b, and an engraved
  • the second explosion-proof membrane 422, the fastener 428, the second insulator 430, the first insulator 423, the second insulator 430 and the fastener 428 of the trace 422b each have a hollow inner cavity and are on the side walls of the respective inner cavity
  • There is an annular sealing groove wherein the periphery of the cap 437, the periphery of the positive temperature coefficient original 424, and the periphery of the first explosion-proof membrane 421 are sequentially laminated to provide electrical connection and are overlapped and tightly pressed to fit the first insulating member 423 of the cylindrical structure.
  • a pressure relief chamber 440 is formed in the middle between the cap 437 and the first explosion-proof membrane 421, and the periphery of the first insulating member 423 and the second explosion-proof membrane 422 located at the lower portion of the first insulating member 423 is fastened and contained therein.
  • the fastener 428 having the vent 4281 the first explosion-proof membrane 421 is fixedly connected to the second explosion-proof membrane 422 through its connecting portion 422a through its connecting portion 421a, and the fastener 428 is firstly processed by mechanical burring. 423 wherein the fastening the shaped insulating member, the outer circumference of the fastener 428 is contained in the second cylindrical insulating member 430 insulating.
  • This embodiment further improves the reliability and safety of the explosion-proof assembly by the protection of the first and second double-stage explosion-proof membranes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Description

便于装配的电池封口组件及电池 技术领域
本发明涉及具有安全装置的电池封口组件及电池。
背景技术
随着音频、摄像机设备、个人计算机等电子设备向轻便化、可移动化方向的急速发展， 高容量化的以各种碱性电池、锂二次电池为代表的非水解液二次电池成为这些电子设备驱 动电源之首选。
由于这种高容量电池密闭在一封闭容器内， 当充电器出现过分充电或误使用等故障 时， 常会在电池内部产生异常气体， 异常气体的聚集会使电池内部^ ^生过大的压力， 从而 存在因电池破裂给电子设备或人带来损伤之类的危险。 为防止上述事故的发生， 人们已在 这种电池上设计有当电池内部压力超过设定值时， 能够通过打开阀体排出气体的防爆装置 (又称防爆组件)。
中国专利 CN2411578Y (圆柱型锂离子电池防爆盖）、 CN1142601C (封闭电池）、 CN1144302C (封闭式电池用防爆封口板及其制造方法）和 CN1156037C (防爆安全阔装置 及采用它的封闭式二次电池）公开了多种不同结构的具有防爆功能、 用于密封电池的防爆 装置， 采用上述防爆装置的电池当内部压力上升时， 可以切断电流； 切断电流后， 如果电 池内部压力仍然持续升高， 当压力超过防爆膜能够承受的预定压力时， 防爆膜撕裂， 电池 泄压， 从而避免电池爆炸。
目前， 具有上述防爆装置的防爆盖组件与电池容器之间都是采用机械翻边扣合方式完 成密封。 但是， 遗憾的是， 由于电池容器的壁厚受到一定限制， 能够采用上述防爆装置的 电池均为机械强度高的电池容器的电池， 最为普遍的是圆柱形钢壳电池容器。 而对于采用 机械强度小的如铝、铝合金等材质制作电池容器的电池，由于不宜采用机械翻边方式封口， 因此上述防爆装置无法应用于以铝、 铝合金等质软材质制作的电池容器的电池。
" 由于上述原因， 目前电池容器机械强度小的电池不采用机械翻边的封口， 而采用悍接 封口， 在这种电池的盖板组件上没有设置安全装置。 因此， 此类电池存在安全上的隐患。
此外， 由于现有防爆装置与构成防爆盖组件的其它组成部分（如用于密封电池容器的 密封件） 之间在结构上不具有相互独立性， 防爆装置不能预先单独制作， 造成装配困难， 影响装配工作效率。
发明内容
本发明的目的意在克服上述现有技术不能在电池容器机械强度小的盖组件上设置防 爆装置的技术缺陷， 提供一种无论对机械强度高的电池容器， 如： 采用钢壳电池容器， 还 是对机械强度较低的电池容器， 如采用铝、 铝合金等制作的电池容器， 都能够适用的具有 安全装置的便于装配的电池封口组件。
进一步地， 本发明的另一目的在于提出一种包括封口座和防爆组件的电池封口组件， 且该封口座和防爆组件的结构各自独立、 完整， 一是便于各自独立加工制造， 降低加工成 本， 提高安装效率， 二是使封口座和防爆组件都能广泛适用于各种形状的电池容器。
实现上述目的的技术方案：
一种便于装配的电池封口组件， 包括防爆组件和封口座， 封口座是一具空腔的筒体， 筒体外表面的中部具有凸起的环形密封连接部， 空腔内容纳所述防爆组件， 所述筒体的内 壁具有环形密封槽， 通过环形密封槽将防爆组件绝缘、 密封地固定于筒体内， 筒体底部的 中心具有第一通孔， 能通过所述第一通孔向防爆组件引入电极， 所述筒体的顶部具有第二 通孔， 能通过所述第二通孔从防爆组件引出电极。
所述防爆组件包括与所述空腔的内壁相吻合的绝缘件、 带孔的帽盖、 第一防爆膜和拉 板， 绝缘件向第一通孔的方向进一步延伸形成具有第三通孔的绝缘件外侧支撑台面， 所述 帽盖的周边与第一防爆膜的周边电连接且通过绝缘件紧密固定在所述环形密封槽内，所述 帽盖与第一防爆膜之间在中部形成一泄压室，所述第一防爆膜的中部经第三通孔与抵顶在 绝缘件外侧支撑台上的拉板电连接。
所述绝缘件外侧支撑台面上靠近封口板的第二通孔的侧壁处垂直延伸出有凸起， 通过 所述凸起隔离拉板和封口板。
所述防爆组件包括与所述空腔的内壁相吻合的第一绝缘件、带孔的帽盖、第一防爆膜、 环形绝缘件和拉板，第一绝缘件具有中空的内腔及在第一绝缘件内腔的侧壁上具有环形密 封槽， 带孔帽盖的周边、 第一防爆膜的周边、 环形绝缘件和拉板的周边依顺序重叠后紧密 压合在所述第一绝缘件的环形密封槽内， 帽盖的周边与第一防爆膜的周边电连接， 所述帽 盖与防爆膜之间在中部形成泄压室， 所述第一防爆膜的中部穿过环形绝缘件与拉板电连 接， 所述第一绝缘件被绝缘、 密封地紧固于筒体内。
所述防爆组件包括与所述空腔的内壁相吻合的第一绝缘件、带孔的帽盖、第一防爆膜、 第二防爆膜、 紧固件和第二绝缘件， 所述第一绝缘件、 第二绝缘件和紧固件都具有中空的 内腔且在各自内腔的侧壁上具有环形密封槽，所述帽盖的周边与第一防爆膜的周边电连接 且重叠后紧密压合在所述第一绝缘件的环形密封槽内，所述帽盖与第一防爆膜之间在中部 形成泄压室，所述紧固件的环形密封槽内包容并紧密固定所述第一绝缘件和位于第一绝缘 件下部的第二防爆膜的周边， 所述第一防爆膜和第二防爆膜的中部电连接， 所述第二绝缘 件的环形密封槽内包容并紧密固定所述紧固件的环形密封槽的外部，所述第二绝缘件被绝 缘、 密封地紧固于筒体内。 在帽盖的周边与第一防爆膜的周边之间还通过压合的方式串联有正温度系数原件。 所述拉板上设置有透气孔。
所述各防爆膜上设置有刻痕。
一种电池， 包括容器、 容纳于容器内的电池单元、 和用于密封容器的电池封口组件， 其中电池封口组件包括防爆组件和封口座， 封口座是一具空腔的筒体， 筒体外表面的中部 具有凸起的环形密封连接部，空腔内容纳所述防爆组件，所述筒体的内壁具有环形密封槽， 通过环形密封槽将防爆组件绝缘、 密封地固定于筒体内， 筒体底部的中心具有第一通孔， 能通过所述第一通孔向防爆组件引入电极， 所述筒体的顶部具有第二通孔， 通过所述第二 通孔从防爆组件引出电极， 能通过所述凸起的环形密封连接部与所述容器密封固定连接。
所述防爆组件包括与所述空腔的内壁相吻合的绝缘件、 带孔的帽盖、 第一防爆膜和拉 板， 绝缘件向第一通孔的方向进一步延伸形成具有第三通孔的绝缘件外侧支撑台面， 所述 帽盖的周边与第一防爆膜的周边电连接且通过绝缘件紧密固定在所述筒体所述的环形密 封槽内， 所述帽盖与第一防爆膜之间在中部形成一泄压室， 所述第一防爆膜的中部经第三 通孔与抵顶在绝缘件外侧支撑台上的拉板电连接。
所述绝缘件外侧支撑台面上靠近封口板的第二通孔的侧壁处垂直延伸出有凸起， 通过 所述凸起隔离拉板和封口板。
所述防爆组件包括与所述空腔的内壁相吻合的第一绝缘件、带孔的帽盖、第一防爆膜、 环形绝缘件和拉板，第一绝缘件具有中空的内腔及在第一绝缘件内腔的侧壁上具有环形密 封槽， 绝缘件向第一通孔的方向进一步延伸形成具有第三通孔的绝缘件外侧支撑台面， 带 孔帽盖的周边、 第一防爆膜的周边、环形绝缘件和拉板的周边依顺序重叠后紧密压合在所 述第一绝缘件的环形密封槽内， 帽盖的周边与第一防爆膜的周边电连接， 所述帽盖与防爆 膜之间在中部形成泄压室， 所述第一防爆膜的中部穿过环形绝缘件与拉板电连接， 所述第 一绝缘件被绝缘、 密封地紧固于筒体内。
所述防爆组件包括与所述空腔的内壁相吻合的第一绝缘件、带孔的帽盖、第一防爆膜、 第二防爆膜、 紧固件和第二绝缘件， 所述第一绝缘件、 第二绝缘件和紧固件都具有中空的 内腔且在各自内腔的侧壁上具有环形密封槽，所述帽盖的周边与第一防爆膜的周边电连接 且重叠后紧密压合在所述第一绝缘件的环形密封槽内，所述帽盖与第一防爆膜之间在中部 形成泄压室，所述紧固件的环形密封槽内包容并紧密固定所述第一绝缘件和位于第一绝缘 件下部的第二防爆膜的周边， 所述第一防爆膜和第二防爆膜的中部电连接， 所述第二绝缘 件的环形密封槽内包容并紧密固定所述紧固件的环形密封槽的外部，所述第二绝缘件被绝 缘、 密封地紧固于筒体内。
在帽盖的周边与第一防爆膜的周边之间还通过压合的方式串联有正温度系数原件。 所述拉板上设置有透气孔。
所述各防爆膜上设置有刻痕。
采用上述技术方案， 本发明有益的技术效果在于：
1、 通过设置封口座， 将防爆组件密封于封口座的空腔中， 封口座的材质可根据需要 灵活掌握， 可根据不同材质的电池容器， 选择适合材质的封口座与电池容器通过悍接的方 式进行封口或通过机械翻边方式封口。 因此， 本发明既适用于安装在机械强度高的电池容 器（如钢壳） 上、 也适用于安装机械强度较低的电池容器（如铝、 铝合金等） 上。 本发明 适用于各种电池容器的电池， 不受电池机械容器强度、 及电池形状的限制， 如圆柱形铝壳 电池、 方形铝壳电池、 圆柱形钢壳电电池、 方形钢壳电电池等。
2、 通过设置封口座， 将防爆组件被绝缘、 密封地紧固于封口座内， 防爆组件与封口 座为各自独立的完整结构， 一是便于各自独立加工制造， 而且， 由于封口座结构简单， 技 术上已相当成熟， 价格低廉， 加工成本低， 而且便于方便、 迅速地装配防爆组件， 大大提 高了防爆组件的装配安装效率。 二是由于封口座和防爆组件各自独立的完整， 因此都能更 广泛地适用于各种形状的电池容器。
3、 通过在绝缘件上设置具有第三通孔的绝缘件外侧支撑台面， 将拉板抵顶在绝缘件 外侧支撑台面上， 拉板不直接支撑在封口座上， 从而使防爆组件简单方便地实现了相对于 封口座的独立完整结构。
4、 封口座采用封口板及在封口板上垂直向上延伸出的筒体结构， 并通过封口板外侧 面凸出的连接部连接密封容器。 一是封口座的结构更简单， 更有利于方便、 迅速地装配防 爆组件； 二是封口板结构不影响密封后的电池外观。
5、 封口座采用封口板及在封口板上垂直向下延伸出的筒体结构， 一是使得封口板在 与电池容器进行密封焊接时， 由于筒体伸入容器内， 有利于封口板与容器之间的定位和方 便焊接。 二是将封口板外露， 而不是将弯折部外露， 电池外观更平整， 提供了另一种新颖 的外观。
6、 通过在封口座的筒体的外侧面中部设置凸起的环形密封连接部， 当封口座与电池 容器进行密封焊接时， 由于既有部分筒体伸入容器内， 有利于封口板与容器之间的定位； 由于有部分筒体外露在容器外， 焊接操作更容易， 又方便了封口板与容器之间的悍接。
7、 根据需要， 封口座可方便地设计成任意形状， 以圆形最佳， 圆形方便加工制造， 装配较方便。
8、 通过设置环形绝缘件， 保证了第一防爆膜只通过其中部与拉板电性连接。
9、 通过设置第一防爆膜、 第二防爆膜和紧固件， 可实现安全、 可靠的二级防爆保护。
10、 封口座的壁厚可方便调整， 以保证空腔内的良好密封。 11、 防爆膜上设置刻痕， 能更精确的设定防爆膜的破裂压力值。
附图说明
图 1是一种电池封口组件的结构图。
图 2是图 中封口板的结构图。
图 3是图 1中防爆组件的结构图。
图 4是采用图 1电池封口组件的电池结构图。
图 5是另一种电池封口组件的结构图。
图 6是图 5中封口板的结构图。
图 7是采用图 5电池封口组件的电池结构图。
图 8是一种便于装配的电池封口组件的结构图。
图 9是图 8中筒体的结构图。
图 10是采用图 8便于装配的电池封口组件的电池结构图。
图 11是一种防爆组件的结构图。
图 12是另一种防爆组件的结构图。
具体实施方式
实施例 1、 一种电池封口组件及电池， 如图 1-4所示， 电池封口组件包括封口座和防 爆组件， 封口座包括封口板 1、 在封口板 1上向上延伸出的筒体 11， 封口板 1的外侧面相 对于筒体 11具有继续向外凸出的连接部 10， 筒体 11内形成空腔 16， 空腔 16内容纳防爆 组件， 筒体 11内的封口板形成支撑台面 14， 封口板 1上有用于引入电极的第一通孔 15， 筒体 11的末端向筒体 1中心弯折形成具有第二通孔 13的弯折部 12， 通过第二通孔 13从 防爆组件引出电极。 弯折部 12与支撑台面 14之间构成环形密封槽 17。 防爆组件如图 3 所示， 防爆组件包括与所述筒体 11的内壁相吻合的绝缘件 6、 带孔 41的帽盖 4、 正温度 系数原件 5、 第一防爆膜 3和拉板 2， 正温度系数原件 5的作用是实现当电池温度达到预 定温度时减小或切断放电电流的作用， 绝缘件 6向第一通孔 15的方向进一步延伸形成具 有第三通孔 62的绝缘件外侧支撑台面 61 , 包容在绝缘件 6内的帽盖 4的周边、 正温度系 数原件 5与第一防爆膜 3的周边电连接， 为了进一步精确设置防爆膜 3的破裂性能， 防爆 膜 3可采用铝质或铜质等导电材质制作， 防爆膜 3上设置有刻痕 31， 通过改变刻痕 31的 深度可精确控制第一防爆膜 3的破裂性能， 帽盖 4与第一防爆膜 3之间在中部形成一泄压 室 42，第一防爆膜 3的中部经第三通孔 62与抵顶在绝缘件 6的外侧支撑台面 61上的拉板 2焊接连接， 绝缘件 6上设置有凸出部 63， 以便能更紧密地压合固定第一防爆膜 3， 在拉 板 2上设置有透气孔 21， 根据需要， 可以不在拉板 2上设置透气孔 21， 如将拉板 2与绝 缘件 6的接触位置设置成凹凸不平的结构使气压可通过之间的空隙保持平衡。绝缘件 6紧 密固定在弯折部 12和支撑台面 14之间形成的环形密封槽 17内。
采用上述电池封口组件制作的电池， 如图 4所示， 包括钢壳容器 7、 容纳于钢壳容器 7内的电池单元 8、 用于密封容器 7并从电池单元 8引出电流的电池封口组件、 下盖板 9、 通过绝缘件 91装设在下盖板 9上的极柱 91， 电池封口组件的结构如图 1-3所示， 钢壳容 器 7与封口板 1的外侧面凸出的连接部 10焊接，电池单元 8的一电极 81与拉板 2电连接， 电池单元 8的另一电极 81与极柱 91电连接。 实施例 2、 另一种电池封口组件及电池， 如图 5-7所示， 电池封口组件的结构包括封 口座和防爆组件， 如图 5、 图 6所示， 封口座包括封口板 1、 在封口板 1上向下延伸出的 筒体 11， 封口板 1的外侧面相对于筒体 11具有继续向外凸出的连接部 10， 筒体 11 内形 成空腔 16， 空腔 16内容纳防爆组件， 筒体 11的下部通过向内弯折形成弯折部 12从而将 防爆组件绝缘、密封地紧固于筒体 11内， 弯折部 12的中心具有第一通孔 15, 通过所述第 一通孔 15向防爆组件引入电极， 筒体 11内顶部的封口板 1上具有第二通孔 13，通过第二 通孔 13从防爆组件引出电极。 具有第二通孔 13的封口板 1与弯折部 12之间构成环形密 封槽 17。 防爆组件的结构同实施例 1。
图 7所示是采用上述电池封口组件制作的电池， 包括铝壳容器 7、 容纳于铝壳容器 7 内的电池单元 8、 用于密封容器 7并从电池单元 8引出电流的电池封口组件、 下盖板 9、 通过绝缘件 91装设在下盖板 9上的极柱 91， 电池封口组件的结构如图 5、 图 6所示， 铝 壳容器 7与封口板 1的外侧面凸出的连接部 10焊接， 电池单元 8的一电极 81与拉板 2电 连接， 电池单元 8的另一电极 81与极柱 91电连接。
从外形结构上来看， 虽然本实施例电池封口组件基本呈实施例 1 电池封口组件的"倒 置"结构。 但这种"倒置"结构具有如下有益的效果： 1、 在与电池容器进行密封悍接时， 由 于筒体 11伸入容器 7内， 有利于封口板 1与容器 7之间的定位和方便焊接。 2、 封口板 1 外露， 而不是弯折部 12外露， 电池外观更平整， 而且提供了另一种新颖的外观。 实施例 3、 一种便于装配的电池封口组件及电池， 如图 8、 9所示， 电池封口组件的 结构包括封口座 1和防爆组件， 封口座 1包括具空腔 16的筒体 11，筒体 11的上部通过向 内弯折形成弯折部 12， 筒体 11的下部垂直于筒体 11 向内延伸形成支撑台面 14， 弯折部 12与支撑台面 14之间构成环形密封槽 17。 通过环形密封槽 17将防爆组件绝缘、 密封地 紧固于筒体 11内， 筒体 11底部的中心具有第一通孔 15， 通过第一通孔 15向防爆组件引 入电极， 筒体 11 的顶部具有第二通孔 13， 通过第二通孔 13从防爆组件引出电极， 筒体 11外表面的中部具有凸起的环形连接部 10。 防爆组件的结构同实施例 1。 图 10所示是采用上述电池封口组件制作的电池，包括铝壳容器 7、容纳于铝壳容器 7 内的电池单元 8、 用于密封容器 7并从电池单元 8引出电流的电池封口组件、 下盖板 9、 通过绝缘件 91装设在下盖板 9上的极柱 91， 电池封口组件的结构如图 8、 9所示， 铝壳容 器 7与封口板 1的外侧面中部凸起的环形连接部 10焊接， 电池单元 8的一电极 81与拉板 2电连接， 电池单元 8的另一电极 81与极柱 91电连接。
通过在筒体 11的外侧面中部设置凸起的环形 接部 10的好处是在与电池容器进行密 封悍接的过程中， 由于既有部分筒体 11伸入容器 7内， 这有利于封口板 1与容器 7之间 的定位， 又有部分筒体 11外露在容器 7外， 这又方便了封口板 1与容器 7之间的焊接。 实施例 4、一种防爆组件， 如图 11所示， 包括第一绝缘件 234、带孔 210的帽盖 233、 正温度系数原件 238、第一防爆膜 225、环形绝缘件 240和拉板 224， 第一绝缘件 234具有 中空的内腔及在第一绝缘件 234内腔的侧壁上具有环形密封槽， 带孔 210的帽盖 233的周 边、 第一防爆膜 225的周边、 环形绝缘件 240和拉板 224的周边依顺序重叠后紧密压合在 所述第一绝缘件的环形密封槽内， 帽盖 233的周边与第一防爆膜 225的周边电连接， 帽盖 233与防爆膜 225之间在中部形成泄压室 226， 拉板 224上开设有透气孔 2241， 拉板 224 抵顶在绝缘件 240上且与第一防爆膜 225的中心焊接连接。 防爆膜 225上有刻痕 227， 通 过改变刻痕 227的深度可精确控制第一防爆膜 225的破裂性能。
本实施例提供一种结构简单、容易制作的防爆组件， 可方便地装配于前述各个实施例 所述的封口座中。
实施例 5、 另一种防爆组件， 如图 12所示， 包括第一绝缘件 423、 带孔 4271的帽盖 437、 正温度系数原件 424、 具有刻痕 421b的第一防爆膜 421、 具有刻痕 422b的第二防爆 膜 422、 紧固件 428、 第二绝缘件 430， 第一绝缘件 423、 第二绝缘件 430和紧固件 428都 具有中空的内腔且在各自内腔的侧壁上具有环形密封槽， 其中帽盖 437的周边、 正温度系 数原件 424的周边、第一防爆膜 421的周边依次层叠设置电连接且重叠后紧密压合包容在 筒形结构的第一绝缘件 423的环形密封槽内， 帽盖 437与第一防爆膜 421之间在中部形成 泄压室 440， 第一绝缘件 423和位于第一绝缘件 423下部的第二防爆膜 422的周边紧固包 容于具有透气孔 4281的紧固件 428中， 第一防爆膜 421通过其连接部 421a与第二防爆膜 422通过其连接部 422a固定连接，紧固件 428是通过机械翻边的加工方式将第一筒形绝缘 件 423紧固其中的， 紧固件 428的外圆周被第二筒形绝缘件 430绝缘包容。
本实施例通过第一、第二双级防爆膜保护，进一步提高了防爆组件的可靠性和安全性。

Claims

权 利 要 求
1、 一种便于装配的电池封口组件， 包括防爆组件， 其特征是： 还包括一封口座， 封口 座是一具空腔的筒体，筒体外表面的中部具有凸起的环形密封连接部，空腔内容纳所述防爆 组件，所述筒体的内壁具有环形密封槽， 通过环形密封槽将防爆组件绝缘、密封地固定于筒 体内， 筒体底部的中心具有第一通孔， 能通过所述第一通孔向防爆组件引入电极， 所述筒体 的顶部具有第二通孔， 能通过所述第二通孔从防爆组件引出电极。
2、 根据权利要求 1所述的便于装配的电池封口组件， 其特征是： 所述防爆组件包括与 所述空腔的内壁相吻合的绝缘件、带孔的帽盖、第一防爆膜和拉板， 绝缘件向第一通孔的方 向进一步延伸形成具有第三通孔的绝缘件外侧支撑台面，所述帽盖的周边与第一防爆膜的周 边电连接且通过绝缘件紧密固定在所述环形密封槽内，所述帽盖与第一防爆膜之间在中部形 成一泄压室， 所述第一防爆膜的中部经第三通孔与抵顶在绝缘件外侧支撑台上的拉板电连 接。
3、 根据权利要求 2所述的便于装配的电池封口组件， 其特征是： 所述绝缘件外侧支撑 台面上靠近封口板的第二通孔的侧壁处有垂直延伸出的凸起，通过所述凸起隔离拉板和封口 板。
4、 根据权利要求 1所述的便于装配的电池封口组件， 其特征是： 所述防爆组件包括与 所述空腔的内壁相吻合的第一绝缘件、 带孔的帽盖、第一防爆膜、 环形绝缘件和拉板， 第一 绝缘件具有中空的内腔及在第一绝缘件内腔的侧壁上具有环形密封槽，带孔帽盖的周边、第 一防爆膜的周边、环形绝缘件和拉板的周边依顺序重叠后紧密压合在所述第一绝缘件的环形 密封槽内，帽盖的周边与第一防爆膜的周边电连接，所述帽盖与防爆膜之间在中部形成泄压 室， 所述第一防爆膜的中部穿过环形绝缘件与拉板电连接， 所述第一绝缘件被绝缘、密封地 紧固于筒体内。 .
5、 根据权利要求 1所述的便于装配的电池封口组件， 其特征是： 所述防爆组件包括与 所述空腔的内壁相吻合的第一绝缘件、 带孔的帽盖、第一防爆膜、 第二防爆膜、紧固件和第 二绝缘件，所述第一绝缘件、第二绝缘件和紧固件都具有中空的内腔且在各自内腔的侧壁上 具有环形密封槽，所述帽盖的周边与第一防爆膜的周边电连接且重叠后紧密压合在所述第一 绝缘件的环形密封槽内，所述帽盖与第一防爆膜之间在中部形成泄压室，所述紧固件的环形 密封槽内包容并紧密固定所述第一绝缘件和位于第一绝缘件下部的第二防爆膜的周边，所述 第一防爆膜和第二防爆膜的中部电连接，所述第二绝缘件的环形密封槽内包容并紧密固定所 述紧固件的环形密封槽的外部， 所述第二绝缘件被绝缘、 密封地紧固于 ¾f体内。
6、 根据权利要求 2-5任意一项所述的便于装配的电池封口组件， 其特征是： 在帽盖的 周边与第一防爆膜的周边之间还通过压合的方式串联有正温度系数原件。
7、 根据权利要求 2-5任意一项所述的便于装配的电池封口组件， 其特征是: 所述 ί立板 上设置有透气孔。
8、根据权利要求 6所述的改进的电池封口组件， 其特征是： 所述拉板上设置有透气孔。
9、 根据权利要求 2-5任意一项所述的改进的电池封口组件， 其特征是： 所述各防爆膜 上设置有刻痕。
10、根据权利要求 8所述的改进的电池封口组件， 其特征是： 所述各防爆膜上设置有刻 痕。
11、一种电池，包括容器、容纳于容器内的电池单元、和用于密封容器的电池封口组件， 其中电池封口组件包括防爆组件， 其特征是： 所述电池封口组件还包括一具空腔的筒体， 空 腔内容纳所述防爆组件，所述筒体的内壁具有环形密封槽，通过环形密封槽将防爆组件绝缘、 密封地固定于筒体内，筒体底部的中心具有第一通孔，能通过所述第一通孔向防爆组件引入 极，所述筒体的顶部具有第二通孔， 能通过所述第二通孔从防爆组件引出电极， 筒体外表 面的中部具有凸起的环形密封连接部，通过所述凸起的环形密封连接部与所述容器密封固定 连接。
12、 根据权利要求 11所述的电池， 其特征是： 所述防爆组件包括与所述空腔的内壁相 吻合的绝缘件、带孔的帽盖、第一防爆膜和拉板， 绝缘件向第一通孔的方向进一步延伸形成 具有第三通孔的绝缘件外侧支撑台面，所述帽盖的周边与第一防爆膜的周边电连接且通过绝 缘件紧密固定在所述筒体所述的环形密封槽内，所述帽盖与第一防爆膜之间在中部形成一泄 压室， 所述第一防爆膜的中部经第三通孔与抵顶在绝缘件外侧支撑台上的拉板电连接。
13、 根据权利要求 12所述的电池， 其特征是： 所述绝缘件外侧支撑台面上靠近封口板 的第二通孔的侧壁处垂直延伸出有凸起， 通过所述凸起隔离拉板和封口板。
14、 根据权利要求 11所述的电池， 其特征是： 所述防爆组件包括与所述空腔的内壁相 吻合的第一绝缘件、 带孔的帽盖、 第一防爆膜、环形绝缘件和拉板， 第一绝缘件具有中空的 内腔及在第一绝缘件内腔的侧壁上具有环形密封槽，绝缘件向第一通孔的方向进一步延伸形 成具有第三通孔的绝缘件外侧支撑台面， 带孔帽盖的周边、第一防爆膜的周边、环形绝缘件 和拉板的周边依顺序重叠后紧密压合在所述第一绝缘件的环形密封槽内，帽盖的周边与第一 防爆膜的周边电连接，所述帽盖与防爆膜之间在中部形成泄压室，所述第一防爆膜的中部穿 过环形绝缘件与拉板电连接， 所述第一绝缘件被绝缘、 密封地紧固于筒体内。
15、 根据权利要求 11所述的电池， 其特征是： 所述防爆组件包括与所述空腔的内壁相 吻合的第一绝缘件、 带孔的帽盖、 第一防爆膜、 第二防爆膜、 紧固件和第二绝缘件， 所述第 一绝缘件、 第二绝缘件和紧固件都具有中空的内腔且在各自内腔的侧壁上具有环形密封槽， 所述帽盖的周边与第一防爆膜的周边电连接且重叠后紧密压合在所述第一绝缘件的环形密 封槽内，所述帽盖与第一防爆膜之间在中部形成泄压室，所述紧固件的环形密封槽内包容并 紧密固定所述第一绝缘件和位于第一绝缘件下部的第二防爆膜的周边，所述第一防爆膜和第 二防爆膜的中部电连接，所述第二绝缘件的环形密封槽内包容并紧密固定所述紧固件的环形 密封槽的外部， 所述第二绝缘件被绝缘、 密封地紧固于筒体内。
16、 根据权利要求 12-15任意一项所述的电池， 其特征是： 在帽盖的周边与第一防爆膜 的周边之间还通过压合的方式串联有正温度系数原件。
17、根据权利要求 12-15任意一项所述的电池，其特征是：所述拉板上设置有透气孔。
18、 根据权利要求 16所述的改进的电池， 其特征是： 所述拉板上设置有透气孔。
19、 根据权利要求 12-15任意一项所述的改进的电池， 其特征是： 所述各防爆膜上设置 有刻痕。
20、 根据权利要求 18所述的改进的电池， 其特征是： 所述各防爆膜上设置有刻痕。
PCT/CN2007/001514 2007-03-02 2007-05-08 Ensemble de fermeture hermétique d'orifice de batterie et batterie comprenant celui-ci Ceased WO2008106836A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/529,519 US20100159307A1 (en) 2007-03-02 2007-05-08 Battery and battery enveloping assembly convenient for assembly
EP07721087A EP2133937A4 (en) 2007-03-02 2007-05-08 HERMETIC BATTERY ORIFICE CLOSURE ASSEMBLY AND BATTERY INCLUDING THE SAME
JP2009551092A JP2010520580A (ja) 2007-03-02 2007-05-08 電池及び組み立てやすい電池封口アセンブリ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007100734397A CN101257098B (zh) 2007-03-02 2007-03-02 便于装配的电池封口组件及电池
CN200710073439.7 2007-03-02

Publications (1)

Publication Number Publication Date
WO2008106836A1 true WO2008106836A1 (fr) 2008-09-12

Family

ID=39737771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/001514 Ceased WO2008106836A1 (fr) 2007-03-02 2007-05-08 Ensemble de fermeture hermétique d'orifice de batterie et batterie comprenant celui-ci

Country Status (6)

Country Link
US (1) US20100159307A1 (zh)
EP (1) EP2133937A4 (zh)
JP (1) JP2010520580A (zh)
KR (1) KR20100014664A (zh)
CN (1) CN101257098B (zh)
WO (1) WO2008106836A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130065096A1 (en) * 2010-05-21 2013-03-14 Josef Daniel-Ivad Alkaline battery and closure assembly therefor
CN114673794A (zh) * 2022-04-11 2022-06-28 中国电子科技集团公司第三十八研究所 一种氢气浮空器用防爆阀门

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257097B (zh) * 2007-03-02 2012-03-14 深圳市比克电池有限公司 一种改进的电池封口组件及电池
CN101931090A (zh) * 2009-06-23 2010-12-29 深圳市比克电池有限公司 一种电池组合盖帽及采用该组合盖帽的圆柱形电池
CN103531730B (zh) * 2012-07-02 2017-03-15 深圳市沃特玛电池有限公司 一种锂离子动力电池的防漏盖帽
US10069118B2 (en) 2012-12-19 2018-09-04 Sanyo Electric Co., Ltd. Cylindrical secondary battery and method for manufacturing same
KR101514827B1 (ko) 2013-02-26 2015-04-23 주식회사 엘지화학 이차 전지 및 그 제조 방법
CN104241559B (zh) * 2014-09-24 2016-09-07 新乡市天冠电子有限公司 锂电池盖帽
KR102332445B1 (ko) * 2014-11-18 2021-11-26 삼성에스디아이 주식회사 단자를 갖는 이차 전지
CN108232052B (zh) * 2016-12-09 2020-12-11 宁德时代新能源科技股份有限公司 二次电池
US11757153B2 (en) 2017-07-31 2023-09-12 Panasonic Intellectual Property Management Co., Ltd. Cylindrical battery
JP7054838B2 (ja) * 2017-07-31 2022-04-15 パナソニックＩｐマネジメント株式会社 円筒形電池
US11316223B2 (en) 2017-07-31 2022-04-26 Panasonic Intellectual Property Management Co., Ltd. Cylindrical battery
CN108091783A (zh) * 2017-11-15 2018-05-29 福建猛狮新能源科技有限公司 一种柱形电池盖帽
CN110048053B (zh) * 2019-04-10 2022-03-25 常州微宙电子科技有限公司 用于储能装置的外壳以及储能装置
CN112531297A (zh) * 2019-08-27 2021-03-19 比亚迪股份有限公司 电池以及电池包
CN111463396B (zh) * 2020-03-27 2023-12-12 浙江华荣电池股份有限公司 一种带有接线头的新型电池
CN115207273A (zh) * 2021-04-08 2022-10-18 株式会社Lg新能源 电极组件、电池单元、电池组及汽车
WO2023272501A1 (zh) * 2021-06-29 2023-01-05 宁德时代新能源科技股份有限公司 电池单体、电池、用电设备及电池单体的制造方法和设备
CN216389655U (zh) * 2021-11-26 2022-04-26 合肥国轩高科动力能源有限公司 一种方形电池
CN114335878B (zh) * 2021-12-28 2023-11-03 孚能科技(赣州)股份有限公司 防爆膜片、防爆阀、电池包和无模组电池包
SE2251551A1 (en) * 2022-12-22 2024-06-23 Northvolt Ab A gasket for a cylindrical secondary cell
CN119929398B (zh) * 2025-04-09 2025-07-18 广东洋基科技有限公司 一种锂电池构件成型用送料机构

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2411578Y (zh) 2000-03-23 2000-12-20 信息产业部电子第十八研究所 圆柱型锂离子蓄电池防爆盖
CN1142601C (zh) 1998-01-16 2004-03-17 东洋钢钣株式会社 封闭电池
CN1144302C (zh) 1995-10-31 2004-03-31 松下电器产业株式会社 封闭式电池用防爆封口板及其制造方法
CN1156037C (zh) 1997-06-05 2004-06-30 东洋钢钣株式会社 防爆安全阀装置及采用它的封闭式二次电池
JP2006012604A (ja) * 2004-06-25 2006-01-12 Toshiba Corp 非水電解質二次電池
CN2793932Y (zh) * 2005-05-13 2006-07-05 深圳粤宝电子工业总公司 电池防爆盖
JP2006252848A (ja) * 2005-03-09 2006-09-21 Sanyo Electric Co Ltd 密閉型電池およびその製造方法
JP2006286561A (ja) * 2005-04-05 2006-10-19 Matsushita Electric Ind Co Ltd 密閉型電池用封口板
CN2840335Y (zh) * 2005-10-10 2006-11-22 深圳市比克电池有限公司 圆柱型二次电池盖板及使用该盖板的圆柱型二次电池
CN2842748Y (zh) * 2005-10-10 2006-11-29 深圳市比克电池有限公司 圆柱型二次电池盖板及采用该盖板的圆柱型二次电池

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6056363A (ja) * 1983-09-06 1985-04-01 Sanyo Electric Co Ltd 密閉形電池
US5609972A (en) * 1996-03-04 1997-03-11 Polystor Corporation Cell cap assembly having frangible tab disconnect mechanism
JP2003142146A (ja) * 2001-10-31 2003-05-16 Japan Storage Battery Co Ltd 電 池
KR100467698B1 (ko) * 2002-09-05 2005-01-24 삼성에스디아이 주식회사 원통형 리튬이차전지와 이의 제조방법
JP2004152697A (ja) * 2002-10-31 2004-05-27 Sony Corp 密閉形電池
JP3943063B2 (ja) * 2003-08-26 2007-07-11 東芝照明プレシジョン株式会社 封口板及び密閉型電池
JP2006351512A (ja) * 2005-05-16 2006-12-28 Matsushita Electric Ind Co Ltd 密閉型二次電池およびその製造方法
US20100015508A1 (en) * 2006-12-05 2010-01-21 In-Young Hwang Cylindrical secondary battery and method of manufacturing the same
CN101257097B (zh) * 2007-03-02 2012-03-14 深圳市比克电池有限公司 一种改进的电池封口组件及电池
CN101257099A (zh) * 2007-03-02 2008-09-03 深圳市比克电池有限公司 电池封口组件及电池

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1144302C (zh) 1995-10-31 2004-03-31 松下电器产业株式会社 封闭式电池用防爆封口板及其制造方法
CN1156037C (zh) 1997-06-05 2004-06-30 东洋钢钣株式会社 防爆安全阀装置及采用它的封闭式二次电池
CN1142601C (zh) 1998-01-16 2004-03-17 东洋钢钣株式会社 封闭电池
CN2411578Y (zh) 2000-03-23 2000-12-20 信息产业部电子第十八研究所 圆柱型锂离子蓄电池防爆盖
JP2006012604A (ja) * 2004-06-25 2006-01-12 Toshiba Corp 非水電解質二次電池
JP2006252848A (ja) * 2005-03-09 2006-09-21 Sanyo Electric Co Ltd 密閉型電池およびその製造方法
JP2006286561A (ja) * 2005-04-05 2006-10-19 Matsushita Electric Ind Co Ltd 密閉型電池用封口板
CN2793932Y (zh) * 2005-05-13 2006-07-05 深圳粤宝电子工业总公司 电池防爆盖
CN2840335Y (zh) * 2005-10-10 2006-11-22 深圳市比克电池有限公司 圆柱型二次电池盖板及使用该盖板的圆柱型二次电池
CN2842748Y (zh) * 2005-10-10 2006-11-29 深圳市比克电池有限公司 圆柱型二次电池盖板及采用该盖板的圆柱型二次电池

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2133937A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130065096A1 (en) * 2010-05-21 2013-03-14 Josef Daniel-Ivad Alkaline battery and closure assembly therefor
CN114673794A (zh) * 2022-04-11 2022-06-28 中国电子科技集团公司第三十八研究所 一种氢气浮空器用防爆阀门

Also Published As

Publication number Publication date
CN101257098B (zh) 2012-01-25
US20100159307A1 (en) 2010-06-24
EP2133937A4 (en) 2012-10-10
EP2133937A1 (en) 2009-12-16
JP2010520580A (ja) 2010-06-10
CN101257098A (zh) 2008-09-03
KR20100014664A (ko) 2010-02-10

Similar Documents

Publication Publication Date Title
WO2008106836A1 (fr) Ensemble de fermeture hermétique d'orifice de batterie et batterie comprenant celui-ci
WO2008106834A1 (fr) Ensemble perfectionné de fermeture hermétique d'orifice de batterie et batterie contenant celui-ci
US20100233530A1 (en) battery and battery enveloping assembly convenient for assembly
KR100324863B1 (ko) 밀폐형전지용방폭실링판및그제조방법
WO2008049293A1 (fr) Ensemble plaque de couverture antidéflagrant et batterie
WO2008049294A1 (fr) Ensemble plaque de couverture et batterie à fonction antidéflagrante
CN217158534U (zh) 一种防爆阀、电池盖板及电池
WO2008106835A1 (fr) Ensemble perfectionné de fermeture hermétique d'orifice de batterie et batterie comprenant celui-ci
WO2008049295A1 (fr) Ensemble plaque de couverture et batterie
CN111785866A (zh) 顶盖组件及二次电池
KR20100032731A (ko) 원통형 이차전지
WO2023241603A1 (zh) 一种动力电池的安全顶盖
JP2014137891A (ja) 角形二次電池
JPH08171898A (ja) 防爆安全装置を備えた角形電気化学素子とその製造方法
US7459232B2 (en) Secondary battery having safety valve and method of manufacturing same
CN114069115A (zh) 纽扣电池
CN222146502U (zh) 导电柱、盖板组件、电池、电池装置及用电设备
JPH11149915A (ja) 密閉型電池
CN216928727U (zh) 纽扣电池
CN223612533U (zh) 不锈钢锂电池盖板及电池
JPH11111264A (ja) 密閉型電池
CN222914950U (zh) 一种盖板总成及电池
HK1121588B (zh) 一种改进的电池封口组件及电池
US20250158214A1 (en) Cap assembly, battery and battery pack
HK1121589A (zh) 便於装配的电池封口组件及电池

Legal Events

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

Ref document number: 07721087

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009551092

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2007721087

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1020097020332

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 12529519

Country of ref document: US