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WO2010148800A1 - Battery assembled cap, cylindrical battery with the cap and method for making the same - Google Patents

Battery assembled cap, cylindrical battery with the cap and method for making the same Download PDF

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Publication number
WO2010148800A1
WO2010148800A1 PCT/CN2010/072646 CN2010072646W WO2010148800A1 WO 2010148800 A1 WO2010148800 A1 WO 2010148800A1 CN 2010072646 W CN2010072646 W CN 2010072646W WO 2010148800 A1 WO2010148800 A1 WO 2010148800A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
cap
insulating
annular wall
pressure protection
Prior art date
Application number
PCT/CN2010/072646
Other languages
French (fr)
Chinese (zh)
Inventor
任灿
陈保同
Original Assignee
深圳市比克电池有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2009101083848A external-priority patent/CN101931090A/en
Priority claimed from CN2009101083833A external-priority patent/CN101931094A/en
Application filed by 深圳市比克电池有限公司 filed Critical 深圳市比克电池有限公司
Publication of WO2010148800A1 publication Critical patent/WO2010148800A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • H01M50/56—Cup shaped terminals
    • 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
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
    • 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
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • 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
    • 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
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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 the field of batteries, and in particular to a A battery assembled cap that can enhance sealing, a cylindrical battery using the combined cap, and a method of manufacturing the cylindrical battery.
  • the cylindrical battery generally includes a battery cylinder 1, a battery pole group 3 which is formed by winding in the battery cylinder 1, a combined cap 2 installed at the top of the battery cylinder 1, and a battery pole disposed at the battery pole.
  • the bottom of the battery cylinder 1 is usually further provided with a bottom insulating ring 7 for separating the positive/negative electrode terminal 52 from the battery electrode group, and the top of the battery cylinder is provided with insulation for insulating the battery electrode group 3 and the combination cap 2 Top insulation ring 6.
  • the top insulating ring 6 is pressed above the battery pole group 3 and is caught under the annular groove 12 formed on the battery cylinder 1.
  • the center of the top insulating ring 6 is provided with a tab hole through which the upwardly extending negative/positive terminal 51 can pass, the diameter of which is slightly larger than the diameter of the support frame 4 and can accommodate the negative/positive terminal 51. It is also used to put the support frame 4 from the open end of the battery can 1.
  • the groove forming process forms the annular groove 12, and while forming the annular groove 12, the annular wall 11 for engaging the combined cap 2 is formed above the annular groove 12 of the battery cylinder 1. .
  • the combined cap When the battery is packaged, the combined cap is prevented from being over the top insulating ring 6, while the upwardly extending negative/positive terminal 51 is welded to the combined cap 2, after which the annular wall 11 is bent and pressed against the combined cap by an external force F1. 2 of the outermost insulating seal 22.
  • the specific structure of the prior art combined cap 2 includes a top plate 21 for extracting an electrode, a thermistor 23 for cutting off current in case of overheating, an explosion-proof pressure protection device 24, and welding with the pressure protection device 24.
  • the top plate 21, the thermistor 23, the pressure protection device 24, and the conductive plate 25 are fastened together by an insulating seal 22.
  • the specific steps of manufacturing a cylindrical battery in the prior art generally include:
  • the battery cylinder 1 is fabricated, and a bottom insulating ring 7 separating the positive/negative electrode terminal 52 and the battery electrode group 3 is placed at the bottom of the battery cylinder 1; then the battery electrode group 3 is placed into the battery cylinder 1, and The downward positive/negative lead terminal 52 is connected to the bottom electrode around the bottom insulating ring 7.
  • the top insulating ring 6 is placed on the upper end surface of the battery pole group 3, and the negative/positive terminal end 51 extending vertically upward passes through the tab hole of the top insulating ring 6.
  • annular groove 1 is formed on the battery cylinder 1 by a rolling process, and the annular groove 12 forms a flange (not labeled) pressed against the top insulating ring 6 inside the battery cylinder 1.
  • the flange 1 inside the battery cylinder 1 presses the top insulating ring 6 against the battery pole group 3 while forming an annular wall 11 at the top of the battery cylinder 1.
  • the support frame 4 is inserted through the tab holes on the top insulating ring 6 into the inner center of the battery pole group 3, and forms a close fit with the battery pole group 3.
  • the free end of the upwardly extending negative/positive terminal 51 is welded to the bottom of the conductive plate 25 of the combined cap 2, after the electrolyte is injected into the interior of the battery can 1, and the combined cap 2 is placed in the open of the battery can 1.
  • the end (the order of the above steps depends on the specific process), and the annular wall 11 at the top of the battery cylinder 1 surrounds the combined cap and abuts against the insulating seal 22 at the periphery of the combined cap.
  • the annular wall is press-fitted against the insulating sealing member 22 by an external force F1 to obtain a cylindrical battery as shown in FIG.
  • the combined caps 2 are previously bent and fastened together by the insulating sealing member 22. After the entire combined cap 2 is placed on top of the battery can 1 , the periphery of the annular wall 11 is bent toward the center to fit over the insulating seal 22 on the periphery of the combined cap 2 .
  • the bent wrinkles which are generated when the annular wall 11 is bent toward the center by the external force F1 are inconsistent with the wrinkles generated by the assembled sealing cap 2 of the insulating sealing member 22, so that the annular wall 11 cannot be assembled after the battery is assembled. It is closely attached to the insulating sealing member 22, so that the sealing effect of the finished battery is not good.
  • the battery assembly cap produced by this conventional method has a failure rate of 0.1%.
  • the technical problem to be solved by the present invention is to make up for the deficiencies of the above prior art, to provide a battery assembly cap which can enhance the sealing property, a cylindrical battery using the same, and a manufacturing method thereof.
  • a method for manufacturing a cylindrical battery for enhancing sealing comprising the steps of: loading a battery pole into a battery barrel of a cylindrical battery; and forming the battery barrel in vitro An annular groove forming a flange for pressing the top insulating ring inside the battery barrel, the battery barrel forming a first annular wall at an open end above the annular groove; and an annular groove for placing the combined cap in the battery barrel Upper, the combined cap is connected to the battery pole set, including an insulating seal having a second annular wall; after the combined cap is placed, the first annular wall and the second annular wall are simultaneously bent inward by an external force, The second annular wall abuts against the combination cap, the first annular wall abutting against the second annular wall.
  • an insulating ring is disposed at the bottom of the battery cylinder, and a positive/negative electrode terminal is drawn downward from the battery pole group, and the positive/negative electrode terminal bypasses the insulating ring and the battery The bottom of the cylinder is in contact.
  • an upper portion of the battery pole group is provided with an insulating ring, and a negative/positive terminal is taken up from the battery pole group, and the negative/positive terminal leads through the insulating ring above the battery pole group and welded to the combined cap bottom.
  • the support frame is loaded into the middle of the battery pole group.
  • the electrolyte may be injected into the battery pack of the battery cartridge before or after the negative/positive terminal is welded to the combined cap.
  • the combined cap comprises a conductive plate connecting the battery pole set, a conductive pressure protection device, a thermistor and a conductive top plate, wherein the combined cap sequentially stacks the conductive plate, the pressure protection device, the thermistor and the top plate through The insulating seals are fastened together from the periphery.
  • the insulating sealing member has a cylindrical shape, and a first positioning table and a second positioning table for clamping the top plate, the thermistor, and the pressure protection device from the upper and lower sides are disposed inside.
  • the insulating seal is provided with a receiving ring for the fence conductive plate below the second positioning table.
  • the second annular wall is formed on the upper portion of the first positioning table of the insulating seal, and after the combined cap is placed, a sealant is applied between the first annular wall and the second annular wall of the insulating seal.
  • the pressure protection device includes an elastic portion that welds the conductive plate and a connecting portion that extends from the elastic portion, and a protective gap is formed at the intersection of the elastic portion and the connecting portion.
  • the present invention also relates to a cylindrical battery including a battery barrel and a combined cap mounted at an open end of the battery barrel, the battery barrel being provided at the open end with a first ring for bending and pressing the combined cap a wall, the composite cap comprising an insulating seal.
  • a first annular wall corresponding to the battery barrel on the insulating seal extends a second annular wall that is bendable in synchronization with the first annular wall.
  • the cylindrical battery further includes a battery pole group installed in the battery cylinder body, the bottom of the battery pole group is provided with an insulating ring, the battery pole group is led downward to the positive/negative electrode lead end, and the positive/negative electrode lead end is bypassed
  • the insulating ring is in contact with the bottom of the battery cylinder; the top of the battery pole group is provided with an insulating ring, the battery pole group leads upwards to the negative/positive terminal, and the negative/positive terminal leads through the insulating ring above the battery pole group And welded to the bottom of the combined cap.
  • the combined cap further includes a conductive plate connecting the negative/positive terminal of the battery pole set, a pressure protection device, a top plate, and the insulating seal, the insulating seal is hollow, and the insulating seal is internally provided with the clamping A clamping mechanism of the top plate and the pressure protection device, the conductive plate being welded to one side of the pressure protection device.
  • the clamping mechanism includes a first positioning table and a second positioning table that respectively clamp the top plate and the pressure protection device from both sides, and the insulating sealing member is disposed under the second positioning table for the fence conductive plate. Containment ring.
  • the top plate and the pressure protection device are also pressed and pressed with a thermistor that blocks the current when the temperature is too high.
  • the pressure protection device comprises an elastic portion for welding the conductive plate and a connecting portion extending from the elastic portion, and the protective portion is provided at the intersection of the elastic portion and the connecting portion.
  • the invention also relates to a battery assembly cap comprising a conductive plate, a pressure protection device, a top plate and an insulating seal, wherein the insulating seal is hollow, and the top plate, the pressure protection device and the conductive plate are sequentially stacked and insulated. Inside the seal.
  • the insulating seal is provided with a bendable second annular wall.
  • the insulating seal is internally provided with a clamping mechanism for clamping the top plate and the pressure protection device, and the conductive plate is welded to one side of the pressure protection device.
  • the clamping mechanism includes a first positioning table and a second positioning table that respectively clamp the top plate and the pressure protection device from both sides, and the insulating sealing member is disposed under the second positioning table for the fence conductive plate. Containment ring.
  • thermistor that blocks the current when the temperature is too high is also pressed between the top plate and the pressure protection device.
  • the pressure protection device includes an elastic portion that welds the conductive plate and a connecting portion that extends from the elastic portion, and a protective gap is formed at the intersection of the elastic portion and the connecting portion.
  • the beneficial effects of the present invention compared with the prior art are: 1) the method for manufacturing a cylindrical battery with enhanced sealing according to the present invention, the first annular wall of the battery cylinder and the second annular wall of the insulating sealing member are simultaneously folded inward The bending causes the bending wrinkles generated by the first annular wall of the battery cylinder to coincide with the wrinkles generated by the insulating sealing member, thereby greatly improving the sealing effect of the battery end cover, and the end cap sealing failure rate is 0.1.
  • the method for manufacturing a cylindrical battery for enhanced sealing of the present invention which uses a composite cap using a novel insulating seal structure which not only preassembles several components of the combined cap, Convenient transportation and battery assembly, improve battery assembly efficiency and accuracy, and simultaneously complete the simultaneous integration of the battery barrel and the combined cap to improve sealing.
  • the battery assembly cap of the present invention and the cylindrical battery, corresponding to the first annular wall of the battery cylinder for bending and pressing the composite cap, and the insulating seal of the combined cap is disposed at the same time as the first annular wall
  • the curved second annular wall makes the bending pleats generated by the first annular wall of the battery cylinder coincide with the wrinkles generated by the insulating sealing member, thereby greatly improving the sealing effect of the battery end cover, and the end cap sealing is not The pass rate decreased from 0.1% to 0.02%;
  • the battery pack cap and the cylindrical battery of the present invention adopt a novel insulating seal structure, which not only pre-assembles several components in the combined cap, Convenient transportation and battery assembly, improve battery assembly efficiency and accuracy, and simultaneously complete the simultaneous integration of the battery barrel and the combined cap to improve sealing.
  • FIG. 1 is a cross-sectional view showing a method of manufacturing a cylindrical battery in which a top insulating ring is placed in a battery can;
  • FIG. 2 is a cross-sectional view of a cylindrical battery after a roll groove process in a conventional cylindrical battery manufacturing method
  • FIG. 3 is a cross-sectional view of a cylindrical battery in which a support frame is placed in the middle of a pole group in a conventional method of manufacturing a cylindrical battery;
  • FIG. 4 is a cross-sectional view showing a conventional cap battery manufacturing method in which a cap is placed on top of a battery can;
  • Figure 5 is a cross-sectional view showing an integrated composite cap in a conventional cylindrical battery manufacturing method
  • Figure 6 is a cross-sectional view showing a combined cylindrical battery in a conventional cylindrical battery manufacturing method
  • Figure 7 is a cross-sectional view of a combined cap in a conventional method of manufacturing a cylindrical battery
  • Figure 8 is a cross-sectional view showing a combined cap in the method of manufacturing a cylindrical battery of the present invention.
  • Figure 9 is a cross-sectional view showing the bottom insulating ring placed in the bottom of the battery cylinder in the method for manufacturing a cylindrical battery of the present invention.
  • Figure 10 is a cross-sectional view showing a method of manufacturing a cylindrical battery in the method of manufacturing a cylindrical battery according to the present invention.
  • Figure 11 is a cross-sectional view showing the top insulating ring placed on the upper end surface of the pole group in the method for manufacturing a cylindrical battery of the present invention
  • Figure 12 is a cross-sectional view showing a cylindrical battery after the roll groove process in the method for manufacturing a cylindrical battery of the present invention
  • Figure 13 is a cross-sectional view showing a cylindrical battery for molding an annular wall in a method of manufacturing a cylindrical battery of the present invention
  • Figure 14 is a cross-sectional view showing the annular wall in close contact with the insulating sealing member after the combined cap of the present invention is placed in the method for manufacturing a cylindrical battery of the present invention
  • Figure 15 is a cross-sectional view showing a cylindrical battery in which a ring wall and an insulating seal are simultaneously folded in the method of manufacturing a cylindrical battery of the present invention.
  • Figure 16 is a cross-sectional view showing a cylindrical battery in which the cylindrical battery manufacturing method of the present invention is completed.
  • the present invention relates to a cylindrical battery manufacturing method for enhancing sealing, which adopts a novel combined cap 12 having a second annular wall, in the first annular wall 111 of the battery cylinder 11 and the insulating sealing member 122 Applying a sealant between the second annular walls 162; simultaneously bending the first annular wall 111 of the battery cylinder 11 and the second annular wall 162 of the insulating seal 122 toward the inner direction of the battery, so that the first ring of the battery cylinder 11
  • the bent wrinkles produced by the wall 111 itself coincide with the wrinkles produced by the assembled sealing member 12 of the insulating seal member 122, improving the sealing of the battery end cap.
  • the invention also relates to a battery assembly cap and a cylindrical battery using the same.
  • the combined cap and cylindrical battery in this example each employ a novel combination cap 12 having a second annular wall 162 that is the first corresponding to the battery cartridge 11 for bending the composite cap 12
  • the annular wall 111 is provided. After the combination cap 12 is placed at the open end of the battery barrel 11, a sealant is applied between the first annular wall 111 and the second annular wall 162 of the insulating seal 122; the second annular wall 162 may be coupled to the first annular wall 111 At the same time, the inward bending is performed, so that the bent wrinkles generated by the first annular wall 111 of the battery cylinder 11 coincide with the wrinkles generated by the assembly of the sealing cap 12 of the insulating sealing member 122, thereby improving the sealing property of the battery end cover.
  • the embodiments of the present invention are specifically described below.
  • the cylindrical battery in the present embodiment mainly includes a battery cylinder 11 , a battery pole set 13 which is formed by winding in the battery cylinder 11 , a combined cap 12 mounted on the top end of the battery cylinder 11 , and a set A cylindrical support frame 14 and the like in the middle of the battery pole group 13.
  • a bottom insulating ring 17 for separating the positive/negative electrode terminal 152 and the battery electrode group 13 is disposed at the bottom of the battery can 11 , and the positive/negative electrode terminal 152 bypasses the bottom insulating ring 17 and the bottom of the battery can 11 contact.
  • the top of the battery barrel 11 is provided with a top insulating ring 16 for insulating the battery electrode group 13 and the combined cap 12 from each other. The top insulating ring 16 is pressed over the battery pole group 13 and is caught under the annular groove 112 formed on the battery cylinder 11.
  • the center of the top insulating ring 16 is provided with a tab hole (not shown) through which the upwardly extending negative/positive terminal 151 can pass, the diameter of which is slightly larger than the diameter of the support frame 14 and can accommodate the negative/positive terminal. 151.
  • the support frame 14 can be placed in the center of the battery pole group 13 from the open end of the battery can 11 through the tab hole.
  • the battery cylinder 11 is formed with an annular groove 112 outside the battery cylinder 11 by a roll groove process.
  • the roll groove process is a rotating disk in which three positions are arranged in a positive triangle shape, and the processed battery barrel itself also rotates, and is rolled out on the outside of the battery barrel through the relative movement of the disk and the battery barrel.
  • the annular groove 112 forms a flange for pressing the top insulating ring 16 inside the battery cylinder 11, and the battery cylinder 11 forms a first annular wall 111 at the open end above the annular groove 112.
  • the combined cap 12 includes a conductive plate 128 connecting the battery pole group 13, a conductive pressure protection device 124, a thermistor 123, and a conductive top plate 121.
  • the conductive plates 128, the pressure protection device 124, the thermistor 123, and the top plate 121, which are sequentially stacked by the combined cap 12, are fastened together by the insulating seal 122 from the periphery.
  • a plurality of solder joints are disposed at the bottom of the conductive plate 128, and the solder joints are soldered to the negative/positive terminal terminals 151 extending upward from the battery pole group 13.
  • the conductive plate 128 is welded to the pressure protection device 124.
  • the insulating sealing member 111 has a cylindrical shape, and a first positioning stage 125 and a second positioning stage 132 for sequentially clamping the top plate 121, the thermistor 123, and the pressure protection device 124 from the upper and lower sides are provided.
  • the insulating seal 111 is provided with a receiving ring 142 for the fence conductive plate 128 below the second positioning table 132.
  • the insulating seal 111 forms a second annular wall 162 at an upper portion of the first positioning stage 125.
  • a thermistor 123 is used to connect the pressure protection device 124 and the top plate 121.
  • Lithium-ion cylindrical batteries are superior to other types of rechargeable batteries, such as nickel-cadmium batteries and nickel metal hydride batteries, due to their light weight and high energy density. Lithium-ion batteries are extremely sensitive to overcharging, and safety has always been a concern of battery manufacturers. For example, the battery unit becomes overcharged, and metallic lithium may be plated on the electrode of the battery unit, which causes a fire due to the flammable characteristics of the metallic lithium, and removes the toxic gas when the battery temperature becomes too high. Therefore, the thermistor 123 is required as a safety protection device. When the temperature of the battery rises and overheats, when the temperature is between 80 and 90 degrees Celsius in practice, the resistance of the thermistor 123 rises to cut off the current and prevent a disaster.
  • a pressure protection device 124 is further employed, which is a destructive protection device.
  • the pressure protection device of the battery needs to withstand a certain pressure.
  • the pressure protection device 124 includes an elastic portion 242 that welds the conductive plate 128 and a connecting portion 246 that extends from the elastic portion 242 to the periphery.
  • the protective portion 244 is formed at the intersection of the elastic portion 242 and the connecting portion 246.
  • the protection gap 244 of the pressure protection device from the intersection of the elastic portion 242 and the connecting portion 246 is broken, so that the battery is released from pressure and prevents explosion, but the battery is It is damaged and can no longer be used.
  • the method for manufacturing the cylindrical battery with enhanced sealing in this embodiment is specifically described below, and specifically includes the following steps:
  • a bottom insulating ring 17 is disposed at the bottom of the battery cylinder 11, and the battery pole group 13 is loaded into the battery cylinder 11 of the cylindrical battery; / Negative electrode terminal 152 which bypasses the insulating ring 17 and is in contact with the bottom of the battery can 11 .
  • a top insulating ring 16 is mounted on the upper portion of the battery pole group 13. Further, the negative/positive terminal 151 is drawn upward from the battery pole group 13. The negative/positive terminal 151 passes through the top insulating ring 16 above the battery pole set 13 and is welded to the bottom of the combined cap 12, in this example, the negative/positive terminal 151 is soldered through the top insulating ring 16 The bottom of the conductive plate 128 of the combined cap 12.
  • annular groove 112 is formed by a roll groove process outside the battery barrel 11.
  • the annular groove 112 forms a flange that presses the top insulating ring 16 inside the battery barrel 11.
  • the battery cylinder 11 forms a first annular wall 111 at an open end above the annular groove 112.
  • the support frame 14 is placed in the middle of the battery pole group 13.
  • the electrolyte can be injected into the battery electrode group 13 in the battery can 11 before or after the negative/positive electrode terminal 151 is welded to the conductive plate 128 of the combination cap 12.
  • the combination cap 12 is placed over the flange in the battery barrel 11.
  • the conductive plates 128 at the bottom end of the combined cap 12 are connected to the battery electrode group 13 through the negative/positive terminal terminals 151.
  • the first annular wall 111 abuts against the second annular wall 162.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

A battery assembled cap, a cylindrical battery with the cap and a method for making the same. The method includes the following steps: putting an electrode assembly of battery into a battery can of the cylindrical battery, forming a circular groove outside the battery can above which the upside of the can being the first circular wall, putting the assembled cap connected with the electrode assembly of battery in the battery can on top of the circular groove, wherein the assembled cap comprises an insulating sealing element with the second circular wall, and bending the first and second circular walls inwards simultaneously by outside force after the assembled cap is placed appropriately so that the second circular wall is pressed against the assembled cap and the first circular wall is pressed against the second circular wall. In this way, the corrugations of the first circular wall and the second circular wall are matched and the seal of the battery is improved. Additionally, there are two locating tabs in the inner face of the insulating sealing element to hold the components of the assembled cap before the second circular wall is bent.

Description

电池组合盖帽、采用该盖帽的圆柱形电池及其制造方法 Battery assembly cap, cylindrical battery using the same and manufacturing method thereof 技术领域Technical field
本发明涉及电池领域，具体涉及一种 可增强密封性的电池组合盖帽、采用该组合盖帽的圆柱形电池以及该圆柱形电池的制造方法。  The present invention relates to the field of batteries, and in particular to a A battery assembled cap that can enhance sealing, a cylindrical battery using the combined cap, and a method of manufacturing the cylindrical battery.
背景技术Background technique
请参考图1至图7，圆柱形电池一般包括电池筒体1、设置在电池筒体1内卷绕形成的电池极组3、安装在电池筒体1顶端的组合盖帽2以及设置在电池极组3中间的圆柱状支撑架4等部件。电池筒体1底部通常还设置用于将正/负极引出端52和电池极组隔开的底部绝缘圈7，电池筒体的顶部设置有用于将电池极组3和组合盖帽2绝缘隔开的顶部绝缘圈6。该顶部绝缘圈6压在电池极组3的上方并卡在电池筒体1上成型的环形槽12下。该顶部绝缘圈6的中心设有一个可使向上延伸的负/正极引出端51穿过的极耳孔，其直径略大于支撑架4的直径并可容纳该负/正极引出端51，该极耳孔还用于从电池筒体1的敞开端放入支撑架4。现有的圆柱形电池制造工艺中，一般通过 辊槽工艺加工成型环形槽12，在成型环形槽12的同时，电池筒体1的环形槽12上方则形成用于卡装组合盖帽2的环形壁11 。封装电池时，将组合盖帽防止在顶部绝缘圈6的上方，同时将向上延伸的负/正极引出端51焊接在组合盖帽2上，之后，用外力F1将环形壁11弯折压合在组合盖帽2的最外部的绝缘密封件22上。 Referring to FIG. 1 to FIG. 7, the cylindrical battery generally includes a battery cylinder 1, a battery pole group 3 which is formed by winding in the battery cylinder 1, a combined cap 2 installed at the top of the battery cylinder 1, and a battery pole disposed at the battery pole. The cylindrical support frame 4 and the like in the middle of the group 3. The bottom of the battery cylinder 1 is usually further provided with a bottom insulating ring 7 for separating the positive/negative electrode terminal 52 from the battery electrode group, and the top of the battery cylinder is provided with insulation for insulating the battery electrode group 3 and the combination cap 2 Top insulation ring 6. The top insulating ring 6 is pressed above the battery pole group 3 and is caught under the annular groove 12 formed on the battery cylinder 1. The center of the top insulating ring 6 is provided with a tab hole through which the upwardly extending negative/positive terminal 51 can pass, the diameter of which is slightly larger than the diameter of the support frame 4 and can accommodate the negative/positive terminal 51. It is also used to put the support frame 4 from the open end of the battery can 1. In the existing cylindrical battery manufacturing process, generally The groove forming process forms the annular groove 12, and while forming the annular groove 12, the annular wall 11 for engaging the combined cap 2 is formed above the annular groove 12 of the battery cylinder 1. . When the battery is packaged, the combined cap is prevented from being over the top insulating ring 6, while the upwardly extending negative/positive terminal 51 is welded to the combined cap 2, after which the annular wall 11 is bent and pressed against the combined cap by an external force F1. 2 of the outermost insulating seal 22.
请参考图7，现有的组合盖帽2的具体结构包括引出电极的顶板21、用来在过热情况下切断电流的热敏电阻23、防爆的压力保护装置24以及与压力保护装置24焊接在一起的导电板25。所述顶板21、热敏电阻23、压力保护装置24和导电板25通过绝缘密封件22紧扣在一起。 Referring to FIG. 7, the specific structure of the prior art combined cap 2 includes a top plate 21 for extracting an electrode, a thermistor 23 for cutting off current in case of overheating, an explosion-proof pressure protection device 24, and welding with the pressure protection device 24. Conductive plate 25. The top plate 21, the thermistor 23, the pressure protection device 24, and the conductive plate 25 are fastened together by an insulating seal 22.
如图1至图6所示，现有技术中制造圆柱形电池的具体步骤一般包括： As shown in FIG. 1 to FIG. 6, the specific steps of manufacturing a cylindrical battery in the prior art generally include:
首先制作电池筒体1，电池筒体1的底部放置将正/负极引出端52和电池极组3隔开的底部绝缘圈7；然后向电池筒体1内放入电池极组3，并将向下的正/负极引出端52绕过底部绝缘圈7与底部电极连接。 First, the battery cylinder 1 is fabricated, and a bottom insulating ring 7 separating the positive/negative electrode terminal 52 and the battery electrode group 3 is placed at the bottom of the battery cylinder 1; then the battery electrode group 3 is placed into the battery cylinder 1, and The downward positive/negative lead terminal 52 is connected to the bottom electrode around the bottom insulating ring 7.
接着如图1所示，将顶部绝缘圈6放置在电池极组3的上端面上，并使竖直向上延伸的负/正极引出端51穿过顶部绝缘圈6的极耳孔。 Next, as shown in FIG. 1, the top insulating ring 6 is placed on the upper end surface of the battery pole group 3, and the negative/positive terminal end 51 extending vertically upward passes through the tab hole of the top insulating ring 6.
之后，如图2所示，在电池筒体1上利用辊压工艺形成环形槽1，该环形槽12在电池筒体1内部形成一压紧在顶部绝缘圈6上的凸缘（未标示），该电池筒体1内部的凸缘1使顶部绝缘圈6紧压在电池极组3上，同时在电池筒体1的顶部形成环形壁11。 Thereafter, as shown in FIG. 2, an annular groove 1 is formed on the battery cylinder 1 by a rolling process, and the annular groove 12 forms a flange (not labeled) pressed against the top insulating ring 6 inside the battery cylinder 1. The flange 1 inside the battery cylinder 1 presses the top insulating ring 6 against the battery pole group 3 while forming an annular wall 11 at the top of the battery cylinder 1.
接着，如图3所示使支撑架4穿过顶部绝缘圈6上的极耳孔伸入电池极组3的内部中心，并与电池极组3形成紧密配合。 Next, as shown in FIG. 3, the support frame 4 is inserted through the tab holes on the top insulating ring 6 into the inner center of the battery pole group 3, and forms a close fit with the battery pole group 3.
最后，将向上延伸的负/正极引出端51的自由端焊接在组合盖帽2的导电板25底部，向电池筒体1内部注入电解液后，并将组合盖帽2放置在电池筒体1的敞开端（以上步骤的顺序视具体工艺而定），并使得电池筒体1顶部的环形壁11围绕该组合盖帽，并贴紧组合盖帽外围的绝缘密封件22。利用外力F1将该环形壁压合贴紧在绝缘密封件22上，得到图6所示的圆柱形电池。 Finally, the free end of the upwardly extending negative/positive terminal 51 is welded to the bottom of the conductive plate 25 of the combined cap 2, after the electrolyte is injected into the interior of the battery can 1, and the combined cap 2 is placed in the open of the battery can 1. The end (the order of the above steps depends on the specific process), and the annular wall 11 at the top of the battery cylinder 1 surrounds the combined cap and abuts against the insulating seal 22 at the periphery of the combined cap. The annular wall is press-fitted against the insulating sealing member 22 by an external force F1 to obtain a cylindrical battery as shown in FIG.
然而，现有的圆柱形电池制造方法中，组合盖帽2是事先通过绝缘密封件22折弯扣装在一起的。当整个组合盖帽2放置在电池筒体1顶部之后，环形壁11周边向中心弯折以贴合在组合盖帽2外围的绝缘密封件22上。但是，环形壁11在外力F1的作用下向中心折弯时本身产生的弯折皱褶与绝缘密封件22组装组合盖帽2所产生的皱褶不一致，导致所述环形壁11在电池组装之后不能与绝缘密封件22紧密贴合，使得成品电池密封效果不好。由该传统方法制作的电池组合盖帽不合格率达0.1%。 However, in the conventional cylindrical battery manufacturing method, the combined caps 2 are previously bent and fastened together by the insulating sealing member 22. After the entire combined cap 2 is placed on top of the battery can 1 , the periphery of the annular wall 11 is bent toward the center to fit over the insulating seal 22 on the periphery of the combined cap 2 . However, the bent wrinkles which are generated when the annular wall 11 is bent toward the center by the external force F1 are inconsistent with the wrinkles generated by the assembled sealing cap 2 of the insulating sealing member 22, so that the annular wall 11 cannot be assembled after the battery is assembled. It is closely attached to the insulating sealing member 22, so that the sealing effect of the finished battery is not good. The battery assembly cap produced by this conventional method has a failure rate of 0.1%.
技术问题technical problem
本发明要解决的技术问题是弥补上述现有技术的不足，提供一种可增强密封性的电池组合盖帽、采用该盖帽的圆柱形电池及其制造方法。 The technical problem to be solved by the present invention is to make up for the deficiencies of the above prior art, to provide a battery assembly cap which can enhance the sealing property, a cylindrical battery using the same, and a manufacturing method thereof.
技术解决方案Technical solution
本发明的技术问题是通过以下技术方案予以解决的：一种增强密封性的圆柱形电池制造方法，包括以下步骤：将电池极组装入圆柱形电池的电池筒体内；在所述电池筒体外成型环形槽，该环形槽在电池筒体内部形成压紧顶部绝缘圈的凸缘，所述电池筒体在环形槽上方的敞开端形成第一环形壁；将组合盖帽放置在电池筒体内的环形槽上方，所述组合盖帽连接电池极组，包括绝缘密封件，该绝缘密封件具有第二环形壁；组合盖帽放置好以后，利用外力将第一环形壁和第二环形壁同时向内折弯，所述第二环形壁贴紧在组合盖帽上，所述第一环形壁贴紧在第二环形壁上。The technical problem of the present invention is solved by the following technical solution: a method for manufacturing a cylindrical battery for enhancing sealing, comprising the steps of: loading a battery pole into a battery barrel of a cylindrical battery; and forming the battery barrel in vitro An annular groove forming a flange for pressing the top insulating ring inside the battery barrel, the battery barrel forming a first annular wall at an open end above the annular groove; and an annular groove for placing the combined cap in the battery barrel Upper, the combined cap is connected to the battery pole set, including an insulating seal having a second annular wall; after the combined cap is placed, the first annular wall and the second annular wall are simultaneously bent inward by an external force, The second annular wall abuts against the combination cap, the first annular wall abutting against the second annular wall.
在将电池极组装入电池筒体之前，在所述电池筒体底部装设绝缘圈，从电池极组向下引出正/负极引出端，所述正/负极引出端绕过绝缘圈并与电池筒体的底部接触。Before the battery pole assembly is loaded into the battery cylinder, an insulating ring is disposed at the bottom of the battery cylinder, and a positive/negative electrode terminal is drawn downward from the battery pole group, and the positive/negative electrode terminal bypasses the insulating ring and the battery The bottom of the cylinder is in contact.
进一步的，所述电池极组上部装设绝缘圈，从电池极组向上引出负/正极引出端，所述负/正极引出端穿过电池极组上方的绝缘圈并焊接在所述组合盖帽的底部。Further, an upper portion of the battery pole group is provided with an insulating ring, and a negative/positive terminal is taken up from the battery pole group, and the negative/positive terminal leads through the insulating ring above the battery pole group and welded to the combined cap bottom.
接着，将支撑架装入所述电池极组中间。Next, the support frame is loaded into the middle of the battery pole group.
本例中，在负/正极引出端与组合盖帽焊接之前或者之后，都可以向电池筒体内的电池极组注入电解液。In this example, the electrolyte may be injected into the battery pack of the battery cartridge before or after the negative/positive terminal is welded to the combined cap.
优选的，所述组合盖帽包括连接电池极组的导电板、导电的压力保护装置、热敏电阻以及导电的顶板，所述组合盖帽依次叠加的导电板、压力保护装置、热敏电阻以及顶板通过绝缘密封件从周围扣紧组合在一起。Preferably, the combined cap comprises a conductive plate connecting the battery pole set, a conductive pressure protection device, a thermistor and a conductive top plate, wherein the combined cap sequentially stacks the conductive plate, the pressure protection device, the thermistor and the top plate through The insulating seals are fastened together from the periphery.
所述绝缘密封件为圆筒状，其内部设置有用来从上下两侧夹紧顶板、热敏电阻、压力保护装置的第一定位台和第二定位台。所述绝缘密封件在第二定位台的下方设置有用来围栏导电板的收容环。The insulating sealing member has a cylindrical shape, and a first positioning table and a second positioning table for clamping the top plate, the thermistor, and the pressure protection device from the upper and lower sides are disposed inside. The insulating seal is provided with a receiving ring for the fence conductive plate below the second positioning table.
本例中，所述第二环形壁形成在所述绝缘密封件的第一定位台上部，组合盖帽放置好以后，在第一环形壁与绝缘密封件的第二环形壁之间涂抹密封胶。In this example, the second annular wall is formed on the upper portion of the first positioning table of the insulating seal, and after the combined cap is placed, a sealant is applied between the first annular wall and the second annular wall of the insulating seal.
具体的，所述压力保护装置包括焊接导电板的弹性部以及从弹性部延伸的连接部，所述弹性部和连接部交接处开设有保护缺口。Specifically, the pressure protection device includes an elastic portion that welds the conductive plate and a connecting portion that extends from the elastic portion, and a protective gap is formed at the intersection of the elastic portion and the connecting portion.
本发明也涉及一种圆柱形电池，其包括电池筒体以及安装在电池筒体的敞开端的组合盖帽，所述电池筒体在敞开端设置有用来弯折压固所述组合盖帽的第一环形壁，所述组合盖帽包括绝缘密封件。所述绝缘密封件上对应电池筒体的第一环形壁延伸设置有可与第一环形壁同步弯折的第二环形壁。The present invention also relates to a cylindrical battery including a battery barrel and a combined cap mounted at an open end of the battery barrel, the battery barrel being provided at the open end with a first ring for bending and pressing the combined cap a wall, the composite cap comprising an insulating seal. A first annular wall corresponding to the battery barrel on the insulating seal extends a second annular wall that is bendable in synchronization with the first annular wall.
所述圆柱形电池进一步包括安装在电池筒体内的电池极组，所述电池极组的底部装设绝缘圈，电池极组向下引出正/负极引出端，所述正/负极引出端绕过绝缘圈并与电池筒体的底部接触；所述电池极组的顶部装设绝缘圈，电池极组向上引出负/正极引出端，所述负/正极引出端穿过电池极组上方的绝缘圈并焊接在所述组合盖帽的底部。The cylindrical battery further includes a battery pole group installed in the battery cylinder body, the bottom of the battery pole group is provided with an insulating ring, the battery pole group is led downward to the positive/negative electrode lead end, and the positive/negative electrode lead end is bypassed The insulating ring is in contact with the bottom of the battery cylinder; the top of the battery pole group is provided with an insulating ring, the battery pole group leads upwards to the negative/positive terminal, and the negative/positive terminal leads through the insulating ring above the battery pole group And welded to the bottom of the combined cap.
所述组合盖帽还包括连接电池极组的负/正极引出端的导电板、压力保护装置、顶板以及所述绝缘密封件，所述绝缘密封件中空，所述绝缘密封件内部设置有夹持所述顶板和压力保护装置的夹持机构，所述导电板焊接在所述压力保护装置一侧。The combined cap further includes a conductive plate connecting the negative/positive terminal of the battery pole set, a pressure protection device, a top plate, and the insulating seal, the insulating seal is hollow, and the insulating seal is internally provided with the clamping A clamping mechanism of the top plate and the pressure protection device, the conductive plate being welded to one side of the pressure protection device.
具体来说，所述夹持机构包括分别从两侧夹持顶板和压力保护装置的第一定位台和第二定位台，所述绝缘密封件在第二定位台的下方设置有用来围栏导电板的收容环。Specifically, the clamping mechanism includes a first positioning table and a second positioning table that respectively clamp the top plate and the pressure protection device from both sides, and the insulating sealing member is disposed under the second positioning table for the fence conductive plate. Containment ring.
优选的，所述顶板和压力保护装置之间还贴合压紧有在温度过高情况下阻断电流的热敏电阻。Preferably, the top plate and the pressure protection device are also pressed and pressed with a thermistor that blocks the current when the temperature is too high.
优选的，所述压力保护装置包括焊接导电板的弹性部以及从弹性部延伸的连接部，所述弹性部和连接部交接处开设有保护缺口。Preferably, the pressure protection device comprises an elastic portion for welding the conductive plate and a connecting portion extending from the elastic portion, and the protective portion is provided at the intersection of the elastic portion and the connecting portion.
本发明还涉及一种电池组合盖帽，包括导电板、压力保护装置、顶板以及绝缘密封件，所述绝缘密封件中空，依次叠合在一起的所述顶板、压力保护装置和导电板收容在绝缘密封件内。所述绝缘密封件上设置有可弯折的第二环形壁。 The invention also relates to a battery assembly cap comprising a conductive plate, a pressure protection device, a top plate and an insulating seal, wherein the insulating seal is hollow, and the top plate, the pressure protection device and the conductive plate are sequentially stacked and insulated. Inside the seal. The insulating seal is provided with a bendable second annular wall.
优选的，所述绝缘密封件内部设置有夹持所述顶板和压力保护装置的夹持机构，所述导电板焊接在所述压力保护装置一侧。Preferably, the insulating seal is internally provided with a clamping mechanism for clamping the top plate and the pressure protection device, and the conductive plate is welded to one side of the pressure protection device.
具体来说，所述夹持机构包括分别从两侧夹持顶板和压力保护装置的第一定位台和第二定位台，所述绝缘密封件在第二定位台的下方设置有用来围栏导电板的收容环。Specifically, the clamping mechanism includes a first positioning table and a second positioning table that respectively clamp the top plate and the pressure protection device from both sides, and the insulating sealing member is disposed under the second positioning table for the fence conductive plate. Containment ring.
进一步的，所述顶板和压力保护装置之间还贴合压紧有在温度过高情况下阻断电流的热敏电阻。Further, a thermistor that blocks the current when the temperature is too high is also pressed between the top plate and the pressure protection device.
所述压力保护装置包括焊接导电板的弹性部以及从弹性部延伸的连接部，所述弹性部和连接部交接处开设有保护缺口。The pressure protection device includes an elastic portion that welds the conductive plate and a connecting portion that extends from the elastic portion, and a protective gap is formed at the intersection of the elastic portion and the connecting portion.
有益效果Beneficial effect
本发明与现有技术相比的有益效果是：1）本发明的增强密封性的圆柱形电池制造方法，将电池筒体的第一环形壁和绝缘密封件的第二环形壁同时向内折弯，使得电池筒体第一环形壁本身产生的弯折皱褶与绝缘密封件所产生的皱褶吻合一致，极大改善了电池端盖的密封效果，端盖密封不合格率由原来的0.1%下降到0.02%；2）本发明的增强密封性的圆柱形电池制造方法，其使用的组合盖帽采用新型绝缘密封件结构，该绝缘密封件不仅能将组合盖帽的若干元件预先组装在一起，方便运输和电池组装，提高电池组装效率和精度，同时也能完成电池筒体和组合盖帽的同步整合，提高密封性。3）本发明的电池组合盖帽以及圆柱形电池，对应电池筒体用来弯折压固组合盖帽的第一环形壁，在组合盖帽的绝缘密封件上设置可与第一环形壁同时向内折弯的第二环形壁，使得电池筒体的第一环形壁本身产生的弯折皱褶与绝缘密封件所产生的皱褶吻合一致，极大改善了电池端盖的密封效果，端盖密封不合格率由原来的0.1%下降到0.02%；4）本发明的电池组合盖帽以及圆柱形电池，采用新型绝缘密封件结构，该绝缘密封件不仅能将组合盖帽内的若干元件预先组装在一起，方便运输和电池组装，提高电池组装效率和精度，同时也能完成电池筒体和组合盖帽的同步整合，提高密封性。 The beneficial effects of the present invention compared with the prior art are: 1) the method for manufacturing a cylindrical battery with enhanced sealing according to the present invention, the first annular wall of the battery cylinder and the second annular wall of the insulating sealing member are simultaneously folded inward The bending causes the bending wrinkles generated by the first annular wall of the battery cylinder to coincide with the wrinkles generated by the insulating sealing member, thereby greatly improving the sealing effect of the battery end cover, and the end cap sealing failure rate is 0.1. % decreased to 0.02%; 2) The method for manufacturing a cylindrical battery for enhanced sealing of the present invention, which uses a composite cap using a novel insulating seal structure which not only preassembles several components of the combined cap, Convenient transportation and battery assembly, improve battery assembly efficiency and accuracy, and simultaneously complete the simultaneous integration of the battery barrel and the combined cap to improve sealing. 3) The battery assembly cap of the present invention and the cylindrical battery, corresponding to the first annular wall of the battery cylinder for bending and pressing the composite cap, and the insulating seal of the combined cap is disposed at the same time as the first annular wall The curved second annular wall makes the bending pleats generated by the first annular wall of the battery cylinder coincide with the wrinkles generated by the insulating sealing member, thereby greatly improving the sealing effect of the battery end cover, and the end cap sealing is not The pass rate decreased from 0.1% to 0.02%; 4) The battery pack cap and the cylindrical battery of the present invention adopt a novel insulating seal structure, which not only pre-assembles several components in the combined cap, Convenient transportation and battery assembly, improve battery assembly efficiency and accuracy, and simultaneously complete the simultaneous integration of the battery barrel and the combined cap to improve sealing.
附图说明DRAWINGS
图1为现有的圆柱形电池制造方法中将顶部绝缘圈放入电池筒体的剖视图；1 is a cross-sectional view showing a method of manufacturing a cylindrical battery in which a top insulating ring is placed in a battery can;
图2为现有的圆柱形电池制造方法中辊槽工艺后的圆柱形电池剖视图；2 is a cross-sectional view of a cylindrical battery after a roll groove process in a conventional cylindrical battery manufacturing method;
图3为现有的圆柱形电池制造方法中将支撑架放入极组中间的圆柱形电池剖视图；3 is a cross-sectional view of a cylindrical battery in which a support frame is placed in the middle of a pole group in a conventional method of manufacturing a cylindrical battery;
图4为现有的圆柱形电池制造方法中将组合盖帽放置在电池筒体顶部的剖视图；4 is a cross-sectional view showing a conventional cap battery manufacturing method in which a cap is placed on top of a battery can;
图5为现有的圆柱形电池制造方法中整合组合盖帽的剖视图；Figure 5 is a cross-sectional view showing an integrated composite cap in a conventional cylindrical battery manufacturing method;
图6为现有的圆柱形电池制造方法中组合完整的圆柱形电池剖视图；Figure 6 is a cross-sectional view showing a combined cylindrical battery in a conventional cylindrical battery manufacturing method;
图7为现有的圆柱形电池制造方法中的组合盖帽的剖视图；Figure 7 is a cross-sectional view of a combined cap in a conventional method of manufacturing a cylindrical battery;
图8为本发明的圆柱形电池制造方法中组合盖帽的剖视图； Figure 8 is a cross-sectional view showing a combined cap in the method of manufacturing a cylindrical battery of the present invention;
图9为本发明的圆柱形电池制造方法中将底部绝缘圈放入电池筒体底部的剖视图；Figure 9 is a cross-sectional view showing the bottom insulating ring placed in the bottom of the battery cylinder in the method for manufacturing a cylindrical battery of the present invention;
图10为本发明的圆柱形电池制造方法中将极组放入电池筒体的剖视图；Figure 10 is a cross-sectional view showing a method of manufacturing a cylindrical battery in the method of manufacturing a cylindrical battery according to the present invention;
图11为本发明的圆柱形电池制造方法中将顶部绝缘圈放置在极组上端面的剖视图；Figure 11 is a cross-sectional view showing the top insulating ring placed on the upper end surface of the pole group in the method for manufacturing a cylindrical battery of the present invention;
图12为本发明的圆柱形电池制造方法中辊槽工艺后的圆柱形电池剖视图；Figure 12 is a cross-sectional view showing a cylindrical battery after the roll groove process in the method for manufacturing a cylindrical battery of the present invention;
图13为本发明的圆柱形电池制造方法中成型环形壁的圆柱形电池剖视图；Figure 13 is a cross-sectional view showing a cylindrical battery for molding an annular wall in a method of manufacturing a cylindrical battery of the present invention;
图14为本发明的圆柱形电池制造方法中置入本发明的组合盖帽后，环形壁紧贴绝缘密封件的剖视图；Figure 14 is a cross-sectional view showing the annular wall in close contact with the insulating sealing member after the combined cap of the present invention is placed in the method for manufacturing a cylindrical battery of the present invention;
图15为本发明的圆柱形电池制造方法中同时折压环形壁和绝缘密封件的圆柱形电池剖视图。Figure 15 is a cross-sectional view showing a cylindrical battery in which a ring wall and an insulating seal are simultaneously folded in the method of manufacturing a cylindrical battery of the present invention.
图16为本发明的圆柱形电池制造方法制作完成的圆柱形电池剖视图。Figure 16 is a cross-sectional view showing a cylindrical battery in which the cylindrical battery manufacturing method of the present invention is completed.
本发明的实施方式Embodiments of the invention
下面通过具体的实施方式并结合附图对本发明做进一步详细说明。The invention will be further described in detail below with reference to specific embodiments and drawings.
本发明涉及一种增强密封性的圆柱形电池制造方法，该圆形电池制造方法采用具有第二环形壁的新型组合盖帽12，在电池筒体11的第一环形壁111与绝缘密封件122的第二环形壁162之间涂抹密封胶；将电池筒体11的第一环形壁111和绝缘密封件122的第二环形壁162同时向电池内部方向折弯，使得电池筒体11的第一环形壁111本身产生的弯折皱褶与绝缘密封件122组装组合盖帽12所产生的皱褶吻合一致，提高电池端盖的密封性。The present invention relates to a cylindrical battery manufacturing method for enhancing sealing, which adopts a novel combined cap 12 having a second annular wall, in the first annular wall 111 of the battery cylinder 11 and the insulating sealing member 122 Applying a sealant between the second annular walls 162; simultaneously bending the first annular wall 111 of the battery cylinder 11 and the second annular wall 162 of the insulating seal 122 toward the inner direction of the battery, so that the first ring of the battery cylinder 11 The bent wrinkles produced by the wall 111 itself coincide with the wrinkles produced by the assembled sealing member 12 of the insulating seal member 122, improving the sealing of the battery end cap.
本发明也涉及一种电池组合盖帽及使用该组合盖帽的圆柱形电池。The invention also relates to a battery assembly cap and a cylindrical battery using the same.
本例中的组合盖帽和圆柱形电池均采用具有第二环形壁162的新型组合盖帽12，所述第二环形壁162是对应电池筒体11上用来弯折压固组合盖帽12的第一环形壁111设置的。当组合盖帽12放置在电池筒体11敞开端以后，在第一环形壁111与绝缘密封件122的第二环形壁162之间涂抹密封胶；该第二环形壁162可与第一环形壁111同时向内折弯，使得电池筒体11的第一环形壁111本身产生的弯折皱褶与绝缘密封件122组装组合盖帽12所产生的皱褶吻合一致，提高电池端盖的密封性。以下具体介绍本发明的实施例。The combined cap and cylindrical battery in this example each employ a novel combination cap 12 having a second annular wall 162 that is the first corresponding to the battery cartridge 11 for bending the composite cap 12 The annular wall 111 is provided. After the combination cap 12 is placed at the open end of the battery barrel 11, a sealant is applied between the first annular wall 111 and the second annular wall 162 of the insulating seal 122; the second annular wall 162 may be coupled to the first annular wall 111 At the same time, the inward bending is performed, so that the bent wrinkles generated by the first annular wall 111 of the battery cylinder 11 coincide with the wrinkles generated by the assembly of the sealing cap 12 of the insulating sealing member 122, thereby improving the sealing property of the battery end cover. The embodiments of the present invention are specifically described below.
请参考图16，本实施方式中的圆柱形电池主要包括电池筒体11、设置在电池筒体11内卷绕形成的电池极组13、安装在电池筒体11顶端的组合盖帽12以及设置在电池极组13中间的圆柱状支撑架14等部件。Referring to FIG. 16 , the cylindrical battery in the present embodiment mainly includes a battery cylinder 11 , a battery pole set 13 which is formed by winding in the battery cylinder 11 , a combined cap 12 mounted on the top end of the battery cylinder 11 , and a set A cylindrical support frame 14 and the like in the middle of the battery pole group 13.
电池筒体11底部设置用于将正/负极引出端152和电池极组13隔开的底部绝缘圈17，所述正/负极引出端152绕过底部绝缘圈17并与电池筒体11的底部接触。电池筒体11的顶部设置有用于将电池极组13和组合盖帽12绝缘隔开的顶部绝缘圈16。该顶部绝缘圈16压在电池极组13的上方并卡在电池筒体11上成型的环形槽112下。该顶部绝缘圈16的中心设有一个可使向上延伸的负/正极引出端151穿过的极耳孔（图未示），其直径略大于支撑架14的直径并可容纳该负/正极引出端151，通过该极耳孔，可从电池筒体11的敞开端将支撑架14放入电池极组13的中心。A bottom insulating ring 17 for separating the positive/negative electrode terminal 152 and the battery electrode group 13 is disposed at the bottom of the battery can 11 , and the positive/negative electrode terminal 152 bypasses the bottom insulating ring 17 and the bottom of the battery can 11 contact. The top of the battery barrel 11 is provided with a top insulating ring 16 for insulating the battery electrode group 13 and the combined cap 12 from each other. The top insulating ring 16 is pressed over the battery pole group 13 and is caught under the annular groove 112 formed on the battery cylinder 11. The center of the top insulating ring 16 is provided with a tab hole (not shown) through which the upwardly extending negative/positive terminal 151 can pass, the diameter of which is slightly larger than the diameter of the support frame 14 and can accommodate the negative/positive terminal. 151. The support frame 14 can be placed in the center of the battery pole group 13 from the open end of the battery can 11 through the tab hole.
所述电池筒体11通过辊槽工艺在电池筒体11外部成型环形槽112。本实施方式中，该辊槽工艺是三个位置呈正三角安排的旋转的盘片，加工的电池筒体本身也旋转，通过盘片和电池筒体的相对运动，在电池筒体的外部辊出均匀的环槽。该环形槽112在电池筒体11内部形成压紧顶部绝缘圈16的凸缘，并且所述电池筒体11在环形槽112上方的敞开端形成第一环形壁111。The battery cylinder 11 is formed with an annular groove 112 outside the battery cylinder 11 by a roll groove process. In this embodiment, the roll groove process is a rotating disk in which three positions are arranged in a positive triangle shape, and the processed battery barrel itself also rotates, and is rolled out on the outside of the battery barrel through the relative movement of the disk and the battery barrel. Uniform ring groove. The annular groove 112 forms a flange for pressing the top insulating ring 16 inside the battery cylinder 11, and the battery cylinder 11 forms a first annular wall 111 at the open end above the annular groove 112.
本实施方式中，所述组合盖帽12包括连接电池极组13的导电板128、导电的压力保护装置124、热敏电阻123以及导电的顶板121。所述组合盖帽12依次叠加的导电板128、压力保护装置124、热敏电阻123以及顶板121通过绝缘密封件122从周围扣紧组合在一起。导电板128底部设置若干焊接点，该焊接点与电池极组13向上延伸的负/正极引出端151焊接。导电板128与压力保护装置124焊接在一起。In the present embodiment, the combined cap 12 includes a conductive plate 128 connecting the battery pole group 13, a conductive pressure protection device 124, a thermistor 123, and a conductive top plate 121. The conductive plates 128, the pressure protection device 124, the thermistor 123, and the top plate 121, which are sequentially stacked by the combined cap 12, are fastened together by the insulating seal 122 from the periphery. A plurality of solder joints are disposed at the bottom of the conductive plate 128, and the solder joints are soldered to the negative/positive terminal terminals 151 extending upward from the battery pole group 13. The conductive plate 128 is welded to the pressure protection device 124.
所述绝缘密封件111为圆筒状，其内部设置有用来从上下两侧依次夹紧顶板121、热敏电阻123、压力保护装置124的第一定位台125和第二定位台132。所述绝缘密封件111在第二定位台132的下方设置有用来围栏导电板128的收容环142。本例中，所述绝缘密封件111在第一定位台125上部形成第二环形壁162。The insulating sealing member 111 has a cylindrical shape, and a first positioning stage 125 and a second positioning stage 132 for sequentially clamping the top plate 121, the thermistor 123, and the pressure protection device 124 from the upper and lower sides are provided. The insulating seal 111 is provided with a receiving ring 142 for the fence conductive plate 128 below the second positioning table 132. In this example, the insulating seal 111 forms a second annular wall 162 at an upper portion of the first positioning stage 125.
本例中采用了热敏电阻123连接压力保护装置124和顶板121。锂离子圆柱形电池由于轻重量和高能量密度，具有优于其它类型可充电电池，比如镍镉电池和镍金属氢化物电池。锂离子电池对过充电极其敏感，安全性一直是电池制造众关注的问题。例如，电池单元变为过充电，金属锂可能镀到电池单元的电极上去，由于金属锂具有易燃特性而引发火灾，当电池温度变得过高时，排除有毒气体。所以需要热敏电阻123作为安全保护装置，在电池温度升高过热时，实践中温度在80至90摄氏度之间时，该热敏电阻123的阻值升高切断电流，防止发生灾害。In this example, a thermistor 123 is used to connect the pressure protection device 124 and the top plate 121. Lithium-ion cylindrical batteries are superior to other types of rechargeable batteries, such as nickel-cadmium batteries and nickel metal hydride batteries, due to their light weight and high energy density. Lithium-ion batteries are extremely sensitive to overcharging, and safety has always been a concern of battery manufacturers. For example, the battery unit becomes overcharged, and metallic lithium may be plated on the electrode of the battery unit, which causes a fire due to the flammable characteristics of the metallic lithium, and removes the toxic gas when the battery temperature becomes too high. Therefore, the thermistor 123 is required as a safety protection device. When the temperature of the battery rises and overheats, when the temperature is between 80 and 90 degrees Celsius in practice, the resistance of the thermistor 123 rises to cut off the current and prevent a disaster.
本例中从安全性考量，进一步采用了压力保护装置124，该压力保护装置124是破坏性保护装置。一般来说，电池的压力保护装置需要耐受一定压力，当电池内压超过压力保护装置的耐压极限，压力保护装置被内部破坏，使电池泄压，防止电池爆炸。所述压力保护装置124包括焊接导电板128的弹性部242以及从弹性部242向四周延伸的连接部246，所述弹性部242和连接部246交接处开设有保护缺口244。该保护缺口244在电池内压超过压力保护装置的耐压极限时，压力保护装置从弹性部242和连接部246交接处的保护缺口244被撑破，使得电池泄压，防止爆炸，但是电池从此被损坏，不能再使用。In this example, from the perspective of safety, a pressure protection device 124 is further employed, which is a destructive protection device. Generally speaking, the pressure protection device of the battery needs to withstand a certain pressure. When the internal pressure of the battery exceeds the withstand voltage limit of the pressure protection device, the pressure protection device is internally damaged, and the battery is released from pressure to prevent the battery from exploding. The pressure protection device 124 includes an elastic portion 242 that welds the conductive plate 128 and a connecting portion 246 that extends from the elastic portion 242 to the periphery. The protective portion 244 is formed at the intersection of the elastic portion 242 and the connecting portion 246. When the internal pressure of the battery exceeds the withstand voltage limit of the pressure protection device, the protection gap 244 of the pressure protection device from the intersection of the elastic portion 242 and the connecting portion 246 is broken, so that the battery is released from pressure and prevents explosion, but the battery is It is damaged and can no longer be used.
请参考图8至图15，以下具体介绍本例中的增强密封性的圆柱形电池制造方法，具体包括以下步骤：Referring to FIG. 8 to FIG. 15 , the method for manufacturing the cylindrical battery with enhanced sealing in this embodiment is specifically described below, and specifically includes the following steps:
如图9和图10所示，在所述电池筒体11底部装设底部绝缘圈17，将电池极组13装入圆柱形电池的电池筒体11内；从电池极组13向下引出正/负极引出端152，所述正/负极引出端152绕过绝缘圈17并与电池筒体11的底部接触。As shown in FIG. 9 and FIG. 10, a bottom insulating ring 17 is disposed at the bottom of the battery cylinder 11, and the battery pole group 13 is loaded into the battery cylinder 11 of the cylindrical battery; / Negative electrode terminal 152 which bypasses the insulating ring 17 and is in contact with the bottom of the battery can 11 .
如图11所示，所述电池极组13上部装设顶部绝缘圈16。进一步的，从电池极组13向上引出负/正极引出端151。所述负/正极引出端151穿过电池极组13上方的顶部绝缘圈16并焊接在所述组合盖帽12的底部，本例中，该负/正极引出端151穿过顶部绝缘圈16焊接在所述组合盖帽12的导电板128底部。As shown in FIG. 11, a top insulating ring 16 is mounted on the upper portion of the battery pole group 13. Further, the negative/positive terminal 151 is drawn upward from the battery pole group 13. The negative/positive terminal 151 passes through the top insulating ring 16 above the battery pole set 13 and is welded to the bottom of the combined cap 12, in this example, the negative/positive terminal 151 is soldered through the top insulating ring 16 The bottom of the conductive plate 128 of the combined cap 12.
如图12所示，在所述电池筒体11外通过辊槽工艺成型环形槽112。该环形槽112在电池筒体11内部形成压紧顶部绝缘圈16的凸缘。所述电池筒体11在环形槽112上方的敞开端形成第一环形壁111。As shown in FIG. 12, an annular groove 112 is formed by a roll groove process outside the battery barrel 11. The annular groove 112 forms a flange that presses the top insulating ring 16 inside the battery barrel 11. The battery cylinder 11 forms a first annular wall 111 at an open end above the annular groove 112.
如图13所示，将支撑架14装入所述电池极组13中间。As shown in Fig. 13, the support frame 14 is placed in the middle of the battery pole group 13.
如图14所示，本例中，在负/正极引出端151与组合盖帽12的导电板128焊接之前或者之后，都可以向电池筒体11内的电池极组13注入电解液。As shown in FIG. 14, in this example, the electrolyte can be injected into the battery electrode group 13 in the battery can 11 before or after the negative/positive electrode terminal 151 is welded to the conductive plate 128 of the combination cap 12.
如图15所示，将组合盖帽12放置在电池筒体11内的凸缘上方。所述组合盖帽12底端的导电板128通过负/正极引出端151连接电池极组13。在电池筒体11的第一环形壁111与绝缘密封件122的第二环形壁162之间涂抹密封胶；所述绝缘密封件122的第二环形壁162紧贴所述电池筒体11的第一环形壁111，利用外力F2将第一环形壁111和第二环形壁162同时向电池筒体11内折弯，所述第二环形壁162贴紧在组合盖帽12的顶板121上，所述第一环形壁111贴紧在该第二环形壁162上。As shown in FIG. 15, the combination cap 12 is placed over the flange in the battery barrel 11. The conductive plates 128 at the bottom end of the combined cap 12 are connected to the battery electrode group 13 through the negative/positive terminal terminals 151. Applying a sealant between the first annular wall 111 of the battery barrel 11 and the second annular wall 162 of the insulating seal 122; the second annular wall 162 of the insulating seal 122 abuts against the battery barrel 11 An annular wall 111 for simultaneously bending the first annular wall 111 and the second annular wall 162 into the battery cylinder 11 by an external force F2, the second annular wall 162 being in close contact with the top plate 121 of the combined cap 12 The first annular wall 111 abuts against the second annular wall 162.
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。 The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims (21)

  1. 一种增强密封性的圆柱形电池制造方法，包括以下步骤： A method for manufacturing a cylindrical battery for enhancing sealing, comprising the steps of:
    将电池极组装入圆柱形电池的电池筒体内； Packing the battery pole assembly into the battery barrel of the cylindrical battery;
    在所述电池筒体外成型环形槽，所述电池筒体在环形槽上方的敞开端形成第一环形壁； Forming an annular groove outside the battery barrel, the battery barrel forming a first annular wall at an open end above the annular groove;
    将组合盖帽放置在电池筒体内的环形槽上方，所述组合盖帽连接电池极组，包括绝缘密封件，该绝缘密封件具有第二环形壁；Disposing a combination cap over an annular groove in the battery barrel, the combination cap connecting the battery pole set, comprising an insulating seal, the insulating seal having a second annular wall;
    利用外力将第一环形壁和第二环形壁同时向内折弯，所述第二环形壁贴紧在组合盖帽上，所述第一环形壁贴紧在第二环形壁上。The first annular wall and the second annular wall are simultaneously bent inwardly by an external force, the second annular wall being in close contact with the combined cap, the first annular wall being in contact with the second annular wall.
  2. 根据权利要求1所述的增强密封性的圆柱形电池制造方法，其特征在于：在将电池极组装入电池筒体之前，在所述电池筒体底部装设绝缘圈，从电池极组向下引出正/负极引出端，所述正/负极引出端绕过绝缘圈并与电池筒体的底部接触。The method of manufacturing a cylindrical battery for enhancing sealing according to claim 1, wherein an insulating ring is disposed at a bottom of the battery barrel before the battery pole is assembled into the battery barrel, downward from the battery pole group. The positive/negative lead terminals are taken out, and the positive/negative lead terminals bypass the insulating ring and are in contact with the bottom of the battery can.
  3. 根据权利要求2所述的增强密封性的圆柱形电池制造方法，其特征在于：所述电池极组上部装设绝缘圈，从电池极组向上引出负/正极引出端，所述负/正极引出端穿过电池极组上方的绝缘圈并焊接在所述组合盖帽的底部。The method for manufacturing a cylindrical battery with enhanced sealing according to claim 2, wherein an insulating ring is disposed on an upper portion of the battery pole group, and a negative/positive terminal is drawn upward from the battery pole group, and the negative/positive anode is led out. The end passes through an insulating ring above the battery pole set and is welded to the bottom of the combined cap.
  4. 根据权利要求3所述的增强密封性的圆柱形电池制造方法，其特征在于：将支撑架装入所述电池极组中间。A method of manufacturing a cylindrical battery for enhancing hermeticity according to claim 3, wherein a support frame is placed in the middle of said battery pole group.
  5. 根据权利要求2或3所述的增强密封性的圆柱形电池制造方法，其特征在于：向电池筒体内的电池极组注入电解液。The method of manufacturing a cylindrical battery for enhancing sealing according to claim 2 or 3, wherein the electrolyte is injected into the battery electrode group in the battery can.
  6. 根据权利要求1-4任意一项所述的增强密封性的圆柱形电池制造方法，其特征在于：所述组合盖帽包括连接电池极组的导电板、导电的压力保护装置、热敏电阻以及导电的顶板，所述组合盖帽依次叠加的导电板、压力保护装置、热敏电阻以及顶板通过绝缘密封件从周围扣紧组合在一起。The method for manufacturing a cylindrical battery for enhancing sealing according to any one of claims 1 to 4, wherein the combined cap comprises a conductive plate connecting the battery pole group, a conductive pressure protection device, a thermistor, and a conductive The top plate, the conductive caps, the pressure protection device, the thermistor and the top plate, which are stacked in sequence, are fastened together from the periphery by an insulating seal.
  7. 根据权利要求6所述的增强密封性的圆柱形电池制造方法，其特征在于：所述绝缘密封件为圆筒状，其内部设置有用来从上下两侧夹紧顶板、热敏电阻、压力保护装置的第一定位台和第二定位台。The method for manufacturing a cylindrical battery with enhanced sealing according to claim 6, wherein the insulating sealing member has a cylindrical shape, and is internally provided with a top plate for clamping the top plate from the upper and lower sides, a thermistor, and pressure protection. a first positioning stage and a second positioning stage of the device.
  8. 根据权利要求7所述的增强密封性的圆柱形电池制造方法，其特征在于：所述绝缘密封件在第二定位台的下方设置有用来围栏导电板的收容环。The method of manufacturing a cylindrical battery for enhancing sealing according to claim 7, wherein the insulating seal is provided with a receiving ring for the fence conductive plate below the second positioning table.
  9. 根据权利要求8所述的增强密封性的圆柱形电池制造方法，其特征在于：所述第二环形壁形成在所述绝缘密封件的第一定位台上部，组合盖帽放置好以后，在第一环形壁与绝缘密封件的第二环形壁之间涂抹密封胶。A method of manufacturing a cylindrical battery for enhancing sealing according to claim 8, wherein said second annular wall is formed on an upper portion of said first positioning stage of said insulating sealing member, and after said cap is placed, first A sealant is applied between the annular wall and the second annular wall of the insulating seal.
  10. 根据权利要求9所述的增强密封性的圆柱形电池制造方法，其特征在于：所述压力保护装置包括焊接导电板的弹性部以及从弹性部延伸的连接部，所述弹性部和连接部交接处开设有保护缺口。A method of manufacturing a cylindrical battery for enhancing sealing according to claim 9, wherein said pressure protecting means comprises an elastic portion for welding the conductive plate and a connecting portion extending from the elastic portion, said elastic portion and the connecting portion being transferred There is a protection gap at the office.
  11. 一种圆柱形电池，包括电池筒体以及安装在电池筒体的敞开端的组合盖帽，所述电池筒体在敞开端设置有用来弯折压固所述组合盖帽的第一环形壁，所述组合盖帽包括绝缘密封件，其特征在于：所述绝缘密封件上对应电池筒体的第一环形壁延伸设置有可与第一环形壁同步弯折的第二环形壁。A cylindrical battery comprising a battery barrel and a combined cap mounted at an open end of the battery barrel, the battery barrel being provided at the open end with a first annular wall for bending and pressing the combined cap, the combination The cap includes an insulating seal, wherein the first annular wall of the insulating seal corresponding to the battery barrel extends to have a second annular wall that can be bent in synchronization with the first annular wall.
  12. 根据权利要求11所述的圆柱形电池，其特征在于：所述圆柱形电池进一步包括安装在电池筒体内的电池极组，所述电池极组的底部装设绝缘圈，电池极组向下引出正/负极引出端，所述正/负极引出端绕过绝缘圈并与电池筒体的底部接触；所述电池极组的顶部装设绝缘圈，电池极组向上引出负/正极引出端，所述负/正极引出端穿过电池极组上方的绝缘圈并焊接在所述组合盖帽的底部。The cylindrical battery according to claim 11, wherein the cylindrical battery further comprises a battery pole group installed in the battery cylinder, the bottom of the battery pole group is provided with an insulating ring, and the battery pole group is led downward. a positive/negative electrode lead end, the positive/negative electrode lead end bypasses the insulating ring and is in contact with the bottom of the battery barrel; the top of the battery pole group is provided with an insulating ring, and the battery pole group leads the negative/positive electrode lead end upwards The negative/positive terminal leads through the insulating ring above the battery pole set and are welded to the bottom of the combined cap.
  13. 根据权利要求11所述的圆柱形电池，其特征在于：所述组合盖帽还包括连接电池极组的负/正极引出端的导电板、压力保护装置、顶板以及所述绝缘密封件，所述绝缘密封件中空，所述绝缘密封件内部设置有夹持所述顶板和压力保护装置的夹持机构，所述导电板焊接在所述压力保护装置一侧。The cylindrical battery according to claim 11, wherein said combined cap further comprises a conductive plate connecting the negative/positive terminal of the battery pole set, a pressure protection device, a top plate, and said insulating seal, said insulating seal The insulating seal is internally provided with a clamping mechanism for clamping the top plate and the pressure protection device, and the conductive plate is welded to one side of the pressure protection device.
  14. 根据权利要求13所述的圆柱形电池，其特征在于：所述夹持机构包括分别从两侧夹持顶板和压力保护装置的第一定位台和第二定位台，所述绝缘密封件在第二定位台的下方设置有用来围栏导电板的收容环。A cylindrical battery according to claim 13, wherein said clamping mechanism comprises a first positioning stage and a second positioning stage for respectively clamping the top plate and the pressure protection means from both sides, said insulating sealing member being A receiving ring for the fence conductive plate is disposed under the two positioning platforms.
  15. 根据权利要求11-14任意一项所述的圆柱形电池，其特征在于：所述顶板和压力保护装置之间还贴合压紧有在温度过高情况下阻断电流的热敏电阻。The cylindrical battery according to any one of claims 11 to 14, characterized in that the top plate and the pressure protection device are further fitted with a thermistor which is pressed to block the current when the temperature is too high.
  16. 根据权利要求15所述的圆柱形电池，其特征在于：所述压力保护装置包括焊接导电板的弹性部以及从弹性部延伸的连接部，所述弹性部和连接部交接处开设有保护缺口。A cylindrical battery according to claim 15, wherein said pressure protecting means comprises an elastic portion for welding the conductive plate and a connecting portion extending from the elastic portion, and a protective notch is formed at the intersection of the elastic portion and the connecting portion.
  17. 一种电池组合盖帽，包括导电板、压力保护装置、顶板以及绝缘密封件，所述绝缘密封件中空，依次叠合在一起的所述顶板、压力保护装置和导电板收容在绝缘密封件内，其特征在于：所述绝缘密封件上设置有可弯折的第二环形壁。A battery assembly cap comprising a conductive plate, a pressure protection device, a top plate and an insulating seal, wherein the insulating seal is hollow, and the top plate, the pressure protection device and the conductive plate which are sequentially stacked together are housed in the insulating seal. The utility model is characterized in that: the insulating sealing member is provided with a bendable second annular wall.
  18. 根据权利要求17所述的电池组合盖帽，其特征在于：所述绝缘密封件内部设置有夹持所述顶板和压力保护装置的夹持机构，所述导电板焊接在所述压力保护装置一侧。The battery assembly cap according to claim 17, wherein said insulating seal is internally provided with a clamping mechanism for holding said top plate and said pressure protection device, said conductive plate being welded to said pressure protection device side .
  19. 根据权利要求18所述的电池组合盖帽，其特征在于：所述夹持机构包括分别从两侧夹持顶板和压力保护装置的第一定位台和第二定位台，所述绝缘密封件在第二定位台的下方设置有用来围栏导电板的收容环。A battery assembly cap according to claim 18, wherein said clamping mechanism comprises a first positioning table and a second positioning table for respectively clamping the top plate and the pressure protection device from both sides, said insulating sealing member being A receiving ring for the fence conductive plate is disposed under the two positioning platforms.
  20. 根据权利要求19所述的电池组合盖帽，其特征在于：所述顶板和压力保护装置之间还贴合压紧有在温度过高情况下阻断电流的热敏电阻。The battery assembly cap according to claim 19, wherein a thermistor that blocks the current when the temperature is too high is also applied between the top plate and the pressure protection device.
  21. 根据权利要求17-20任意一项所述的电池组合盖帽，其特征在于：所述压力保护装置包括焊接导电板的弹性部以及从弹性部延伸的连接部，所述弹性部和连接部交接处开设有保护缺口。A battery assembly cap according to any one of claims 17 to 20, wherein said pressure protection means comprises an elastic portion for welding the conductive plate and a connecting portion extending from the elastic portion, the intersection of the elastic portion and the connecting portion There is a protection gap.
PCT/CN2010/072646 2009-06-23 2010-05-12 Battery assembled cap, cylindrical battery with the cap and method for making the same WO2010148800A1 (en)

Applications Claiming Priority (4)

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CN200910108384.8 2009-06-23
CN200910108383.3 2009-06-23
CN2009101083848A CN101931090A (en) 2009-06-23 2009-06-23 Battery combination nut cap and cylindrical battery using same
CN2009101083833A CN101931094A (en) 2009-06-23 2009-06-23 Manufacturing method of cylindrical battery with enhanced airtightness

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CN103682185A (en) * 2012-08-31 2014-03-26 丁振荣 Battery cell, battery and electrode cap sealing and fixing method of battery
CN111668400A (en) * 2020-05-06 2020-09-15 深圳市长盈氢能动力科技有限公司 Power battery cover plate
CN113328213A (en) * 2021-04-27 2021-08-31 宁波超霸能源有限公司 Method for manufacturing cylindrical lithium battery
CN113740166A (en) * 2021-07-30 2021-12-03 东莞力朗电池科技有限公司 Accurate test of cylinder cap CID pressure blasting and automatic recording device

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CN101394004A (en) * 2007-09-20 2009-03-25 三星Sdi株式会社 Rechargeable battery and manufacturing method thereof

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JP2002048241A (en) * 2000-08-03 2002-02-15 Seiko Instruments Inc Gasket
CN1992377A (en) * 2005-12-29 2007-07-04 三星Sdi株式会社 A lithium secondary battery
CN101394004A (en) * 2007-09-20 2009-03-25 三星Sdi株式会社 Rechargeable battery and manufacturing method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103682185A (en) * 2012-08-31 2014-03-26 丁振荣 Battery cell, battery and electrode cap sealing and fixing method of battery
CN111668400A (en) * 2020-05-06 2020-09-15 深圳市长盈氢能动力科技有限公司 Power battery cover plate
CN113328213A (en) * 2021-04-27 2021-08-31 宁波超霸能源有限公司 Method for manufacturing cylindrical lithium battery
CN113328213B (en) * 2021-04-27 2023-07-11 宁波超霸能源有限公司 Manufacturing method of cylindrical lithium battery
CN113740166A (en) * 2021-07-30 2021-12-03 东莞力朗电池科技有限公司 Accurate test of cylinder cap CID pressure blasting and automatic recording device
CN113740166B (en) * 2021-07-30 2024-05-28 东莞力朗电池科技有限公司 Accurate test and automatic recording device of cylinder cap CID pressure blasting

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