CN103548175A - Cap assembly having a novel structure and cylindrical battery comprising same - Google Patents
Cap assembly having a novel structure and cylindrical battery comprising same Download PDFInfo
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- CN103548175A CN103548175A CN201280025124.4A CN201280025124A CN103548175A CN 103548175 A CN103548175 A CN 103548175A CN 201280025124 A CN201280025124 A CN 201280025124A CN 103548175 A CN103548175 A CN 103548175A
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- battery
- cap assembly
- cap
- fire extinguishing
- cut channel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/106—PTC
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- 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
Abstract
The present invention relates to a cap assembly which is mounted on an open upper end of a cylindrical can in a battery structure in which an electrode assembly (jelly-roll) having a positive electrode/separator/negative electrode structure is built in the cylindrical can. The cap assembly comprises: a safety vent forming a notch which is fixed such that the safety vent may be broken by a high-pressure gas from the battery; a protruding upper-end cap connected along an outer surface of the safety vent; a gasket mounted on an outer surface of the upper cap; and a fire-extinguishing member comprising fire-extinguishing components for preventing the battery from igniting, and having at least one portion mounted at the interface between the upper cap and the gasket.
Description
Technical field
The present invention relates to a kind of cap assembly with novel structure, more specifically, the cap assembly that relates to a kind of open upper place of the hydrostatic column that is disposed in battery, this battery is configured to have following structure, in this structure, the electrode assemblie of negative electrode/separator/anode construction (gel roll) is installed in hydrostatic column, and this cap assembly comprises: have the safe ventilation mouth of predetermined cut channel, this cut channel is configured to be broken by the gases at high pressure in battery; Outstanding top cap, this top shade its periphery and is connected to safe ventilation mouth; Be installed in the liner of the periphery of top cap; With fire extinguishing member, it is on fire to prevent battery that this fire extinguishing member comprises fire extinguishing component, and at least a portion of this fire extinguishing member is installed in the interface between top cap and liner.
Background technology
Along with mobile device is developed more and more, and the demand of this mobile device is increased, the demand of the secondary cell of the energy as mobile device is also sharply increased.In this secondary cell, lithium secondary battery has high energy density and discharge voltage, has carried out much research and lithium secondary battery by business widely, used at present for lithium secondary battery.
Shape based on battery container, secondary cell can be classified as: cylindrical battery, this cylindrical battery has the electrode assemblie being installed in cylinder shape metal container; Prismatic battery, this prismatic battery has the electrode assemblie being installed in prismatic metal container; Or bag shape battery, this bag of shape battery has the electrode assemblie being installed in the bag shape housing being formed by aluminum laminate sheet.The advantage of cylindrical battery is that cylindrical battery has relatively large capacity and Stability Analysis of Structures.
In addition, be installed in electrode assemblie in battery container as power producing component, there is negative electrode/separator/anode stacked structure that can be discharged and recharged.Electrode assemblie can be classified as: jelly-roll type electrode assemblie, this jelly-roll type electrode assemblie is configured to have following structure, in this structure, active material is applied to lengthy motion picture type negative electrode and lengthy motion picture type anode, and this negative electrode and anode are disposed under the state between negative electrode and anode and are wound at separator; Or the electrode assemblie of stacked, this electrode assemblie is configured to have following structure, and in this structure, a plurality of negative electrodes and the anode with preliminary dimension are arranged under the state between negative electrode and anode by stacking continuously at separator.The electrode assemblie of jelly-roll type has the advantage that is easy to manufacture and have high unit mass energy density.
Fig. 1 is the vertical section perspective view that typically shows general cylindrical battery.
With reference to figure 1, cylindrical battery 100 is manufactured by the following method: jelly-roll type (convoluted) electrode assemblie 120 is placed in cylindrical housings 130, electrolyte is injected in cylindrical housings 130, and by have electrode terminal (not shown) for example the top cap 140 of cathode terminal be connected to the unlimited upper end of cylindrical housings 130.
The electrode assemblie 120 of jelly-roll type is configured to have following structure, in this structure, is disposed in negative electrode 121 and anode 122 under the state between negative electrode 121 and anode 122 is wound into circle at separator 123.Cylindrical center pin 150 is disposed in Gai Juan center, that is, and and electrode assemblie 120 center.Centrepin 150 makes to present predetermined intensity by metal material conventionally.Centrepin 150 is configured to have the cylindrical structural of hollow, by coiling metallic plate, forms this structure.Centrepin 150 act as fixing and support electrode assembly 120.In addition, when to battery charging and discharging or when battery operation, centrepin 150 act as discharge by the passage of the gas of the internal-response generation of battery.
Meanwhile, lithium secondary battery has the inferior position of low-security.For example, as the battery about 4.5V or higher when many that overcharged, active material of cathode is decomposed, and the dendritic growth of lithium metal occurs at anode place, and electrolyte is decomposed.Now, from battery, produce heat and cause above-mentioned decomposition and some sons to decompose development rapidly, and final battery can on fire and blast.
Therefore, in order to address the above problem, general cylindrical secondary cell comprises current interrupt device (CID), current interrupt device is installed in the electrode assemblie and the space between the cap of top that is limited at jelly-roll type, for interruptive current when secondary cell breaks down and release internal pressure.
With reference to figure 2, top cap 10 is outstanding to form cathode terminal.Top cap 10 has exhaust outlet.Below top cap 10, arrange successively positive temperature coefficient (PTC) element 20, safe ventilation mouth 30 and connecting plate 50, the remarkable increase of cell resistance during internal temperature increase by when battery of positive temperature coefficient (PTC) element 20 and interruptive current, safe ventilation mouth 30 is formed at has the shape depressed downwards and outstanding and break with emission gases when the internal pressure of battery increases under normal condition, connecting plate 50 place, a side is in the top coupled to safe ventilation mouth 30 and at the place, a side of its lower end, is connected to the negative electrode of electrode assemblie 40.
Therefore,, under routine operation state, via contact conductor 42, connecting plate 50, safe ventilation mouth 30 and PTC element 20, the negative electrode of electrode assemblie 40 is connected to top cap 10 to obtain conductivity.
Yet, when some safety devices such as safe ventilation mouth 30 or PTC element 20 break down, still there is the possibility of battery burning.
That is, lithium secondary battery can be easy on fire under multiple occasion, such as lithium secondary battery, overcharges, applies outside heat to the physical deformation of lithium secondary battery and lithium secondary battery.The whole bag of tricks that overcharges and prevent the internal short-circuit that the physical deformation due to lithium secondary battery occurs that has proposed to prevent lithium secondary battery, overcharging of lithium secondary battery causes lithium secondary battery on fire.Yet, although there is this prevention method, at least when lithium secondary battery starts when on fire, still need to suppress the method for the carrying out of battery burning.The risk relevant with burning increases along with the increase of battery capacity.
Therefore, there are the height needs to the technology addressing the above problem at all.
Summary of the invention
< technical problem >
Therefore, made the present invention with the technical problem addressing the above problem and other remains unsolved.
Particularly, the object of this invention is to provide a kind of cap assembly, this cap assembly can utilize the fire extinguishing member that comprises the component of putting out a fire and prevent that battery unit is on fire.
Another object of the present invention is to provide a kind of cylindrical battery that comprises the fail safe with raising of this cap assembly.
< technical scheme >
According to an aspect of the present invention, can be by providing a kind of cap assembly to realize above-mentioned and other target, this cap assembly is disposed in the unlimited upper end of the hydrostatic column of battery, this battery is configured to following structure, in this structure, the electrode assemblie of negative electrode/separator/anode construction (gel roll) is installed in hydrostatic column, and this cap assembly comprises: have the safe ventilation mouth of predetermined cut channel, this cut channel is configured to be broken by the gases at high pressure in battery; Along its periphery, be connected to the outstanding top cap of safe ventilation mouth; Be installed in the liner of the periphery of top cap; With fire extinguishing member, it is on fire to prevent battery that this fire extinguishing member comprises fire extinguishing component, and at least a portion of this fire extinguishing member is installed in the interface between top cap and liner.
Conventionally, on fire at the place, top of battery unit.Therefore, the cap assembly according to the present invention member that is constructed such that to put out a fire is disposed in the interface between top cap and liner, so that fire extinguishing member is more quickly in response to the temperature change of battery unit, on fire to prevent battery unit.
Consider the overall structure of battery, for suppressing the space that battery unit fire extinguishing member on fire can be mounted, greatly limited.According to the present invention, at least a portion of fire extinguishing member is installed in the interface between top cap and liner.
In preferred exemplary, the interface that at least a portion of fire extinguishing member is installed can be top or the circumferential lateral surface of top cap.
Preferably, fire extinguishing member is configured to have loop configuration smooth, hollow, making to put out a fire member can be in response to the shape at the interface between top cap and liner, and 20% to 100% the perimeter that equals its radius of fire extinguishing member is fixedly mounted in the interface between top cap and liner.
As long as the burning inhibit feature of fire extinguishing member exhibits excellent does not reduce the performance of battery simultaneously, the structure of the member of putting out a fire is not particularly limited.For example, fire extinguishing member can be the becket that comprises flame retardance element or thin hollow inflaming retarding membrane.
The kind of flame retardance element (fire retardant) is not particularly limited.For example, halogen flame, phosphorus fire retardant and inorganic compound fire retardant can be used as flame retardance element.According to circumstances, can use a kind of by what choose the reagent from above-mentioned explanation, or the mixture of two or more.
Halogen flame makes by the free radical of γ-ray emission stable and present flame retardant effect substantially.The example of halogen flame can comprise tribromophenoxy ethane, tetrabromobisphenol-A (TBBA), octabromodiphenyl base ether (OBDPE), brominated epoxy resin, brominated polycarbonate oligomer, chlorinated paraffin wax, haloflex and cyclic aliphatic chlorine fire retardant.
In phosphorus fire retardant, the poly-metaphosphoric acid producing by thermal decomposition forms the protective layer of poly-metaphosphoric acid, or has intercepted oxygen when gathering the carbon film producing by dehydration when metaphosphoric acid is produced, and presents flame retardant effect.The example of phosphorus fire retardant can comprise two (diphenyl) phosphates (RDP) of phosphate, phosphine oxide, phosphine oxide glycol, phosphite, phosphonate ester, triaryl phosphate, alkyl acid phosphate diaryl-amine, trialkylphosphate, resorcinol such as ammonium phosphate.
Inorganic compound fire retardant is conventionally decomposed and is discharged non-flammable gas such as water, carbon dioxide, sulfur dioxide and hydrogen chloride by heating, and cause the endothermic reaction, thereby by the endothermic reaction, dilute fuel gas in case the approaching of block gas, and the cooling and generation that reduces thermal decomposition product is to present flame retardant effect.The example of inorganic compound fire retardant can comprise aluminium hydroxide, magnesium hydroxide, antimony oxide, stannic hydroxide, tin oxide, molybdenum oxide, zirconium compounds, borate and calcium salt.
Especially, flame retardance element can comprise alkyl halide (halon) component.Alkyl halide is the carbon compound gas of a kind of halogens (fluorine, chlorine or bromine), and alkyl halide interrupts the oxidation reaction of combustible by the negative catalyst of halogens in case approaching of block gas, thereby prevents burning.The preferred exemplary of alkyl halide is alkyl halide-1211 (CF2BrCl).
As long as inflaming retarding membrane can stably keep fire retardant not cause occurring chemical reaction in battery simultaneously, the material for inflaming retarding membrane is not particularly limited.The example that is used for the material of inflaming retarding membrane can comprise polyethylene, polypropylene, polyurethane and fluorine-based polymer.Preferably, the polyurethane of performance fire resistance is used as the material of inflaming retarding membrane.
In concrete example, at the content of flame retardance element, equal under 20% to 90% the state of calculating by weight of total weight of inflaming retarding membrane, flame retardance element can be contained in the material of film.Fire retardant can be contained in the material of film or can be applied on the outer surface of film.
In another concrete example, at the content of flame retardance element, equal under 20% to 90% the state of calculating by weight of total weight of becket, flame retardance element can be contained in the material of ring.
Meanwhile, fire extinguishing member can at predetermined temperature or higher temperature, present from liquid state, become gaseous state performance to absorb heat.That is, when the internal temperature of battery is constantly elevated to the predetermined temperature before battery explosion, fire extinguishing member is absorbed in fire extinguishing member heat and obstruct surrounding air around, thereby suppresses the further rising of temperature.Therefore, can effectively prevent that battery is on fire.
Predetermined temperature can be 100 ℃ or higher.Preferably, predetermined temperature can be arranged in the scope between 100 ℃ and 200 ℃.
In example, safe ventilation mouth can be provided with depressed part in the central, depressed part is configured to by lower recess, at the upper bending area and the lower bending area place that limit this depressed part, can form respectively the first cut channel and the second cut channel, the first cut channel can form closed curve, the second cut channel that is formed on the first cut channel below can be configured to have the open open curve structure of a side, and compares with the first cut channel, and the second cut channel can deeper be formed.
Because compare with the first cut channel, the second cut channel is deeper formed, so when the gas-pressurized that is more than or equal to critical pressure when its pressure is applied to safe ventilation mouth, the second cut channel is cut off.On the other hand, when the gas-pressurized that is less than critical pressure when its pressure is applied to safe ventilation mouth, the first cut channel coordinates upwards to promote depressed part with the second cut channel.
In another example, cap assembly can also comprise positive temperature coefficient (PTC) element, and this positive temperature coefficient (PTC) element is disposed between top cap and safe ventilation mouth.
Because PTC element is disposed in the position of contiguous fire extinguishing member, so when PTC element is not worked at predetermined temperature or higher temperature, fire extinguishing member absorbs heat immediately, thus the fail safe of assurance battery unit.
According to another aspect of the present invention, provide the cylindrical battery that comprises the cap assembly with said structure.
Column secondary battery according to the present invention is passed following method manufacture, at jelly-roll type electrode assemblie, be mounted under the state in cylinder shape metal container, cap assembly is connected to the unlimited upper end of cylinder shape metal container, the anodic bonding of electrode assemblie is received to the lower end of this container, and the cathode weld of electrode assemblie is arrived to cap assembly, this cap assembly is coupled to the upper end of this container, to be accommodated under the state in this container closely sealed cell at electrode assemblie and electrolyte.
It according to battery of the present invention, can be the lithium secondary battery with high energy density, discharge voltage and output stability.According to other parts of lithium secondary battery of the present invention, will be described in detail below.
Conventionally, lithium secondary battery comprises negative electrode, anode, separator and the non-aqueous electrolyte that comprises lithium salts.
Negative electrode can be passed following method manufacture, for example, the mixture of active material of cathode, electric conducting material and adhesive is applied to cathode collector, and the dry mixture applying.If needed, can also add filler.Similarly, anode can be passed following method manufacture, and anode material is applied to anode collector and the dry anode material applying.If need, can also add mentioned component.
Separator is disposed between anode and negative electrode.Separator can be formed by the high ion permeability of performance and the insulation film of mechanical strength.
The non-aqueous electrolyte that comprises lithium salts is comprised of non-aqueous electrolyte and lithium salts.Liquid non aqueous electrolytic solution, solid electrolyte or inoganic solids ionogen can be used as non-aqueous electrolyte.
In current-collector, electrode active material, electric conducting material, adhesive, filler, separator, electrolytic solution and the lithium salts technical field under the present invention, be known, therefore by description is omitted.
According to lithium secondary battery of the present invention, can utilize known commonsense method in the technical field under the present invention to manufacture.That is, lithium secondary battery can be manufactured in the following way, and porous separator is arranged between negative electrode and anode and by electrolytic solution and is expelled to wherein.
Negative electrode can be manufactured by the following method, for example, the slurry being comprised of lithium transition metal oxide active material, electric conducting material and adhesive is applied to current-collector and dry this slurry.With same method, anode can be manufactured by the following method, for example, the slurry being comprised of carbon active material, electric conducting material and adhesive is applied to thin current-collector and dry this slurry.
< advantageous effects >
As can be apparent from above-mentioned, cap assembly according to the present invention comprises the fire extinguishing member that contains the component of putting out a fire, and wherein, fire extinguishing member is installed in the interface between top cap and liner.Therefore, can prevent that battery is on fire, thereby improve the fail safe of battery.
Accompanying drawing explanation
From the following detailed description also by reference to the accompanying drawings, will more clearly understand above-mentioned and other object, feature and other advantage of the present invention, wherein:
Fig. 1 is the vertical section perspective view that general cylindrical battery is shown;
Fig. 2 is partial cross section's perspective view of Fig. 1;
Fig. 3 illustrates the perspective view of cylindrical battery according to an embodiment of the invention;
Fig. 4 is the exploded view of Fig. 3;
Fig. 5 is the partial enlarged drawing of Fig. 3;
Fig. 6 is partial cross section's perspective view of Fig. 3; And
Fig. 7 is the perspective view that the safe ventilation mouth of Fig. 6 is shown.
Embodiment
Now, with reference to accompanying drawing, by the preferred embodiment of the present invention will be described in detail.Yet, it should be noted, scope of the present invention be can't help illustrated embodiment and is limited.
Fig. 3 illustrates the perspective view of cylindrical battery according to an embodiment of the invention, and Fig. 4 is the exploded view of Fig. 3.
With reference to these accompanying drawings, cylindrical battery 100a is manufactured by the following method according to an embodiment of the invention, gel roll (not shown) is inserted in container 200, electrolyte injection, in container 200, and is installed to cap assembly 300 to the unlimited upper end of container 200.In addition, insulating component 400 is positioned in the upper end of cap assembly 300 and is pressed so that negative electrode and anodized insulation by pipe 410.
Fig. 5 is the partial enlarged drawing of Fig. 3, and Fig. 6 is partial cross section's perspective view of Fig. 3.
Together with Fig. 3 and Fig. 4, with reference to these accompanying drawings, cap assembly 300 comprises: safe ventilation mouth 330, and safe ventilation mouth 330 has predetermined cut channel, and this cut channel is configured to be broken by the gases at high pressure in battery; Outstanding top cap 310, top cap 310 is connected to safe ventilation mouth 320 along its periphery; Liner 340, liner 340 is installed in the periphery of top cap; Positive temperature coefficient (PTC) element 350, positive temperature coefficient element 350 is disposed between top cap 310 and safe ventilation mouth 320; With fire extinguishing member 360, fire extinguishing member 360 is installed in the interface between top cap 310 and liner 340.
In addition, fire extinguishing member 360 forms by comprising the becket of alkyl halide component as fire retardant.At the content of flame retardant compositions, equal under 60% the state of calculating by weight of total weight of becket, flame retardant compositions is comprised in the material of ring.
Fig. 7 is the perspective view that the safe ventilation mouth of Fig. 6 is typically shown.
Therefore,, when the internal pressure of container 200 surpasses critical pressure, the second cut channel 326 of safe ventilation mouth 320 is broken and causes gas-pressurized to be discharged from container 200.
Although the preferred embodiments of the present invention have been disclosed for n-lustrative object, but what those skilled in the art will appreciate that is, not departing from as in scope and spirit of the present invention disclosed in the accompanying claims in the situation that, can access a plurality of modifications, interpolation and replacement.
Claims (15)
1. a cap assembly, described cap assembly is disposed in the unlimited upper end of the hydrostatic column of battery, described battery is configured to have following structure, wherein the electrode assemblie of negative electrode/separator/anode construction (gel roll) is installed in described hydrostatic column, and described cap assembly comprises:
Safe ventilation mouth, described safe ventilation mouth has predetermined cut channel, and the gases at high pressure that described predetermined cut channel is configured in described battery break;
Outstanding top cap, described outstanding top shade its periphery and is connected to described safe ventilation mouth;
Liner, described liner is installed in the periphery of described top cap; With
Fire extinguishing member, it is on fire to prevent described battery that described fire extinguishing member comprises fire extinguishing component, and at least a portion of described fire extinguishing member is installed in the interface between described top cap and described liner.
2. cap assembly according to claim 1, wherein, the described interface that described at least a portion of described fire extinguishing member is installed is top or the circumferential lateral surface of described top cap.
3. cap assembly according to claim 1, wherein, described fire extinguishing member is configured to have loop configuration smooth, hollow, and 20% to 100% the perimeter that equals its radius of described fire extinguishing member is fixedly mounted in the described interface between described top cap and described liner.
4. cap assembly according to claim 1, wherein, described fire extinguishing member is the becket that comprises flame retardance element or thin hollow inflaming retarding membrane.
5. cap assembly according to claim 4, wherein, described flame retardance element is a kind of fire retardant of selecting in the group from being comprised of halogen flame, phosphorus fire retardant and inorganic compound fire retardant or the mixture of two or more fire retardants.
6. cap assembly according to claim 5, wherein, described flame retardance element comprises alkyl halide component.
7. cap assembly according to claim 4 wherein, is polyethylene, polypropylene, polyurethane or fluorine-based polymer for the material of described inflaming retarding membrane.
8. cap assembly according to claim 4, wherein, equals at the content of described flame retardance element under 20% to 90% the state of calculating by weight of total weight of described inflaming retarding membrane, and described flame retardance element is comprised in the material for described film.
9. cap assembly according to claim 4, wherein, equals at the content of described flame retardance element under 20% to 90% the state of calculating by weight of total weight of described becket, and described flame retardance element is comprised in the material for described ring.
10. cap assembly according to claim 1, wherein, described fire extinguishing piece table reveals the performance that becomes gaseous state under predetermined temperature or higher temperature from liquid state, to absorb heat.
11. cap assemblies according to claim 10, wherein, described predetermined temperature is 100 ℃.
12. cap assemblies according to claim 1, wherein, described safe ventilation mouth locates to be provided with depressed part in the central, described depressed part is configured to lower recess, at the upper bending area and the lower bending area place that limit described depressed part, form respectively the first cut channel and the second cut channel, described the first cut channel forms closed curve, described the second cut channel that is formed on described the first cut channel below is configured to have the open open curve structure of a side, and compare with described the first cut channel, described the second cut channel is deeper formed.
13. cap assemblies according to claim 1, also comprise positive temperature coefficient (PTC) element, and described positive temperature coefficient (PTC) element is disposed between described top cap and described safe ventilation mouth.
14. 1 kinds of cylindrical batteries, described cylindrical battery comprises according to the cap assembly described in any one in claim 1 to 13.
15. cylindrical batteries according to claim 14, wherein, described battery comprises lithium secondary battery.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110051751A KR101335285B1 (en) | 2011-05-31 | 2011-05-31 | Cap Assembly of Novel Structure and Cylindrical Battery Employed with the Same |
| KR10-2011-0051751 | 2011-05-31 | ||
| PCT/KR2012/003461 WO2012165765A2 (en) | 2011-05-31 | 2012-05-03 | Cap assembly having a novel structure and cylindrical battery comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103548175A true CN103548175A (en) | 2014-01-29 |
| CN103548175B CN103548175B (en) | 2016-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280025124.4A Active CN103548175B (en) | 2011-05-31 | 2012-05-03 | There is the cap assembly of novel structure and use the cylindrical battery of this cap assembly |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5894264B2 (en) |
| KR (1) | KR101335285B1 (en) |
| CN (1) | CN103548175B (en) |
| TW (1) | TWI496340B (en) |
| WO (1) | WO2012165765A2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106716676A (en) * | 2014-09-29 | 2017-05-24 | 株式会社Lg化学 | Cylindrical battery comprising pressurizing part and method of manufacturing same |
| CN107078232A (en) * | 2014-07-14 | 2017-08-18 | 科慕埃弗西有限公司 | Lithium ion battery with the improvement security for preventing burning |
| CN109155390A (en) * | 2016-10-31 | 2019-01-04 | 株式会社Lg化学 | Secondary cell |
| CN110024158A (en) * | 2016-10-14 | 2019-07-16 | 伊奈维特有限责任公司 | Cylindrical battery cells equipped with insulating element, and the battery module comprising the battery unit |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102041164B1 (en) * | 2015-11-10 | 2019-11-06 | 주식회사 엘지화학 | Cylindrical Battery Including Materials for Improving Safety at High Temperature |
| KR102203249B1 (en) * | 2017-10-10 | 2021-01-13 | 주식회사 엘지화학 | Cylindrical Battery Cell Having Connection Cap |
| KR20220014223A (en) * | 2020-07-28 | 2022-02-04 | 주식회사 엘지에너지솔루션 | Rechargeable battery |
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| US20070212595A1 (en) * | 2006-03-13 | 2007-09-13 | Lg Chem, Ltd | High rate charging and discharging cylindrical secondary battery |
| CN101110487A (en) * | 2006-07-18 | 2008-01-23 | 株式会社Lg化学 | Secondary battery with improved safety |
| JP2009211906A (en) * | 2008-03-04 | 2009-09-17 | Panasonic Corp | Power supply unit and power supply pack using the same |
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- 2012-05-03 JP JP2014511281A patent/JP5894264B2/en active Active
- 2012-05-03 WO PCT/KR2012/003461 patent/WO2012165765A2/en active Application Filing
- 2012-05-08 TW TW101116332A patent/TWI496340B/en active
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| CN107078232A (en) * | 2014-07-14 | 2017-08-18 | 科慕埃弗西有限公司 | Lithium ion battery with the improvement security for preventing burning |
| CN107078232B (en) * | 2014-07-14 | 2021-03-26 | 科慕埃弗西有限公司 | Lithium ion battery with improved safety against combustion |
| CN106716676A (en) * | 2014-09-29 | 2017-05-24 | 株式会社Lg化学 | Cylindrical battery comprising pressurizing part and method of manufacturing same |
| US10418620B2 (en) | 2014-09-29 | 2019-09-17 | Lg Chem, Ltd. | Cylindrical battery including pressurizing part and method of manufacturing the same |
| CN110024158A (en) * | 2016-10-14 | 2019-07-16 | 伊奈维特有限责任公司 | Cylindrical battery cells equipped with insulating element, and the battery module comprising the battery unit |
| CN109155390A (en) * | 2016-10-31 | 2019-01-04 | 株式会社Lg化学 | Secondary cell |
| CN109155390B (en) * | 2016-10-31 | 2021-06-11 | 株式会社Lg化学 | Secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201304246A (en) | 2013-01-16 |
| KR101335285B1 (en) | 2013-12-02 |
| WO2012165765A3 (en) | 2013-02-14 |
| KR20120133203A (en) | 2012-12-10 |
| JP5894264B2 (en) | 2016-03-23 |
| CN103548175B (en) | 2016-11-16 |
| WO2012165765A2 (en) | 2012-12-06 |
| TWI496340B (en) | 2015-08-11 |
| JP2014517468A (en) | 2014-07-17 |
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Effective date of registration: 20211206 Address after: Seoul, South Kerean Patentee after: LG Energy Solution,Ltd. Address before: Seoul, South Kerean Patentee before: LG CHEM, Ltd. |