CN104064692A - Lithium battery having fire extinguishing apparatus - Google Patents
Lithium battery having fire extinguishing apparatus Download PDFInfo
- Publication number
- CN104064692A CN104064692A CN201410053242.7A CN201410053242A CN104064692A CN 104064692 A CN104064692 A CN 104064692A CN 201410053242 A CN201410053242 A CN 201410053242A CN 104064692 A CN104064692 A CN 104064692A
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- China
- Prior art keywords
- outer chamber
- extinguishing device
- lithium battery
- interlayer
- battery
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
-
- 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
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a lithium battery having a fire extinguishing apparatus and solves a problem that safety factor is more difficult to control when a lithium battery in the prior art is increased in capacity. A separation layer is arranged inside a shell body and divides the interior of the shell body into two chambers. The two chambers are respectively an inner chamber and an outer chamber. The separation layer is a deformable body which can protrude externally and crack when battery pressure and/or battery temperature increases. A triggering-type fire extinguishing apparatus is disposed in the outer chamber and includes a triggering part which is triggered by deformation of the separation layer, a fire extinguishing bag which containing fire extinguishing materials, and a generator which stretches into the fire extinguishing bag and generates gas when triggered by the triggering part. When the triggering part is triggered, the generator generates gas, the fire extinguishing bag bursts after being blown up and the fire extinguishing material sprays out so that a fire extinguishing effect is achieved. With the apparatus, a lithium battery is prevented from exploding and being on fire and external objects are prevented from being on fire, thereby reducing damage.
Description
Technical field
The present invention relates to a kind of lithium battery structure, especially a kind of lithium battery with extinguishing device with fire-extinguishing function concurrently.
Background technology
Lithium battery (Lithium Cell) refers to and in electrochemical system, contains the lithium the most basic electrochemistry unit of (comprising lithium metal, lithium alloy and lithium ion, lighium polymer).Lithium battery is broadly divided into two classes: lithium metal battery and lithium ion battery.Lithium ion battery does not contain the lithium of metallic state, and can charge.Lithium ion battery is generally the battery that uses lithium alloy metal oxide to be negative material, use nonaqueous electrolyte for positive electrode, graphite.
At present, lithium ion battery is as novel energy, there is significant advantage owing to himself comparing traditional lead acid batteries: 1. good cycle, monomer cycle life can reach 2000 times, 2. high low temperature discharge safety, 3. volume energy than the highest, 4. weight energy than the highest, 5. support high rate charge-discharge and memory-less effect, 6. safety and environmental protection, environmentally safe.Therefore,, since lithium battery commercial applications, applied rapidly in industry-by-industry field with its excellent function and characteristic.
The application of lithium battery extends to traffic power by digital product field, energy storage, space flight, communication spare power supplies lamp field, the demand of lithium battery is also turned to even thousands of ampere-hours up to a hundred by original hundreds of MAH, and due to the lifting of capacity, safety factor will be difficult to control more.
When lithium battery is subject to short circuit, high heat, when the affecting of the abnormal factors such as overcharge, lithium battery interior easily has gases at high pressure to produce, and can cause battery container distortion, even produces the danger of blast, if excess Temperature also can produce spark, causes burning.
Patent Office of the People's Republic of China has announced a CN101931069 patent on December 31st, 2012, name is called lithium cell safety valve, comprises sealing ring and the inner top cover setting gradually from top to bottom thereof, PTC ring, explosion-proof diaphragm and orifice plate; The level bag end of thread bag of explosion-proof diaphragm is anchored to the top of the periphery of top cover; The periphery of described top cover aligns with the outward flange of PTC ring; Lithium cell safety valve also comprises insulating barrier, and insulating barrier is arranged at the outside, edge of periphery and the outside, edge of PTC ring of the upright bag end of thread of explosion-proof diaphragm and the inner side of level bag end of thread, top cover, and insulating barrier bag is buckled in the top of the periphery of top cover.This safety valve is to discharge producing gases at high pressure in battery container, gases at high pressure easily damage periphery after discharging, the excess Temperature back object that also can ignite, and safety valve release gases at high pressure need the regular hour, this time period may cause battery explosion to catch fire, fail safe is lower, and the efficiency of safety valve is lower.
Summary of the invention
The invention solves the lifting of existing lithium battery along with capacity, safety factor is more unmanageable defect also, a kind of lithium battery with extinguishing device is provided, in the housing of lithium battery, be provided with extinguishing device, when catching fire, lithium battery can play fire extinguishing function, prevent from causing that exterior object catches fire, reduce to destroy.
The present invention has also solved existing lithium battery and has discharged gases at high pressure by safety valve, but power brick is not carried out to security protection, the danger that also exists battery explosion to catch fire, a kind of lithium battery with extinguishing device is provided, can give battery container inner buffering of gases at high pressure producing, can also, to battery Soft Roll spray extinguish material, play the effect of fire extinguishing simultaneously.
Lithium battery with extinguishing device provided by the invention, also, by the protection bag in the sealing of battery Soft Roll outer wrap, in protection bag, be filled with extinguish material, when the explosion of battery Soft Roll, can tear protection bag, make extinguish material be sprayed onto battery Soft Roll appearance, play the effect of fire extinguishing.
The technical solution adopted for the present invention to solve the technical problems is: a kind of lithium battery with extinguishing device, comprise battery container, battery Soft Roll is installed in housing, enclosure interior is divided into two cavitys by interlayer, be respectively inner chamber body and outer chamber, outer chamber is in inner chamber body outside, battery Soft Roll is installed in inner chamber body, interlayer is to raise and/or temperature raises and evagination the deformable body that can break with battery pressure, in outer chamber, be provided with trigger-type extinguishing device, trigger-type extinguishing device comprises the trigger unit being triggered by interlayer distortion, include the fire extinguishing bag of extinguish material and extend into the interior generator by trigger unit triggering for generating gas of fire extinguishing bag.Trigger-type extinguishing device described in the application refers to a kind of needs by triggering just active extinguishing device, trigger unit is triggered, generator just can produce gas, explosion after the inflation of fire extinguishing bag, extinguish material just sprays out and plays fire extinguishing function, prevent that battery explosion from catching fire, cause that exterior object catches fire, reduce to destroy, housing is separated and is divided into two cavitys by interlayer, outer chamber can elevated pressure gas buffer area, placing battery housing impacts blast once being subject to gases at high pressure, postpone the action time of gases at high pressure, work and reserve time enough to extinguishing device, interlayer can produce and is out of shape and breaks under the effect of gases at high pressure, deformation energy is to starting signal of trigger unit, as long as the safe range of the interlayer of controlling well distortion, the gap of breaking can be sprayed and provide path to battery Soft Roll to extinguish material, interlayer can also raise to produce according to temperature and is out of shape and breaks, improve the coefficient of safety of lithium battery.
As preferably, the center that the middle part of each of interlayer is monoblock, the periphery of center is provided with groove and forms the predefined region of breaking, and is provided with multiple tracks gap on each of interlayer, gap communication with cavity body and outer chamber, start and be radiated entends from the periphery of center in gap.Multiple tracks gap on interlayer provides the outlet of a pressure release of gases at high pressure, and gases at high pressure leak into outer chamber, makes gases at high pressure step-down; The predefined region of breaking represents on interlayer, to process in advance vestige and the position of breaking, and intensity is herein lower than other positions of interlayer, interlayer take-up deform and the position of breaking just in the predefined region of breaking.
As preferably, between interlayer and the outer wall of housing, be connected with supporting bracket, supporting bracket is fixed on the edge of housing, is provided with through hole in supporting bracket.Supporting bracket supports interlayer, and battery Soft Roll can be installed in the inner chamber body that interlayer surrounds.
As preferably, outer chamber is divided into two kinds, and a kind of is the positive and face outer chamber below of corresponding housing, and another kind is the side outer chamber of corresponding housing surrounding.Face outer chamber and side outer chamber are in being the size discrimination of lifting surface area, the position that area is large is the starting position of battery explosion, the area of side outer chamber is little, and the corner of side outer chamber periphery is more approaching, and therefore the ability to bear of the ability to bear opposite face outer chamber of side outer chamber is strong.
As preferably, the generator of the trigger-type extinguishing device in face outer chamber is one, and centre position in face outer chamber; The generator of the trigger-type extinguishing device in side outer chamber is multiple, each generator piece that the gap on respective side outer chamber place interlayer is separated respectively, interlock mutually between multiple generators.
As preferably, the trigger unit of the trigger-type extinguishing device in face outer chamber is in the form of annular discs, disk is made up of two parts, centre is the roundel of indent, periphery is the curved annulus in cross section, arc-shaped transition between roundel and annulus, arc-shaped transition place is provided with the passage of some connection annulus and roundel.Gases at high pressure enter into outer chamber and are applied on annulus from gap, annulus indent becomes the space of high pressure buffer gas, and passage has increased the direction that extinguish material sprays.
As preferably, the diameter of roundel is less than the diameter of the center of face outer chamber place interlayer, and in the space of fire extinguishing bag in roundel indent, generator is fixed in the middle of the bottom of roundel, and the gas ejection ports of generator extend in fire extinguishing bag.
As preferably, side outer chamber is divided into four lateral mass according to four sides of housing, and the fire extinguishing bag of the trigger-type extinguishing device in side outer chamber is divided into four, and each is all distributed in whole lateral mass.
As preferably, the trigger unit of the trigger-type extinguishing device in side outer chamber is connected on the outer wall of interlayer.
As preferably, the outer wrap of battery Soft Roll has protection bag, and protection bag is enclosed construction, in protection bag, is filled with extinguish material, and protection bag is one, and protection handbag wraps all battery Soft Rolls in inner chamber body.
The invention has the beneficial effects as follows: trigger unit is triggered, generator just can produce gas, explosion after the inflation of fire extinguishing bag, and extinguish material just sprays out and plays fire extinguishing function, prevents that battery explosion from catching fire, and causes that exterior object catches fire, and reduces to destroy.
Brief description of the drawings
Fig. 1 is a kind of side outer chamber of the present invention structural representation;
Fig. 2 is a kind of face outer chamber of the present invention structural representation;
Fig. 3 is the end view of face outer chamber structure of the present invention;
In figure: 1, housing, 2, interlayer, 3, supporting bracket, 4, outer chamber, 5, extinguish material, 6, battery Soft Roll, 7, generator, 8, trigger unit, 9, gap, 10, face outer chamber, 11, the predefined region of breaking, 12, roundel, 13, annulus, 14, center, 15, side outer chamber, 16, fire extinguishing bag, 17, passage.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1: a kind of lithium battery (referring to accompanying drawing 1 accompanying drawing 2 accompanying drawings 3) with extinguishing device, comprise battery container 1, enclosure interior is divided into two cavitys by interlayer 2, is respectively inner chamber body and outer chamber 4, outer chamber is in inner chamber body outside, and inner chamber body inside is provided with battery Soft Roll 6.Interlayer is to raise and/or temperature raises and evagination the deformable body that can break with battery pressure, in outer chamber, be provided with trigger-type extinguishing device, trigger-type extinguishing device comprises by the trigger unit 8 of interlayer distortion triggering, includes the fire extinguishing bag 16 of extinguish material 5 and extend into the interior generator 7 by trigger unit triggering for generating gas of fire extinguishing bag.
Between interlayer and the outer wall of housing, be connected with supporting bracket 3, supporting bracket is fixed on the edge of housing, is provided with through hole in supporting bracket.The rounded center 14 that the middle part of each of interlayer is monoblock, the periphery of center is provided with groove and forms the predefined region 11 of breaking, on each of interlayer, be provided with multiple tracks gap 9, gap communication with cavity body and outer chamber, start and be radiated entends from the periphery of center in gap.
Housing is cuboid, and outer chamber is divided into two kinds, and a kind of is corresponding housing front and face outer chamber 10 below, and another kind is the side outer chamber 15 of corresponding housing surrounding.The trigger unit 8 of the trigger-type extinguishing device in face outer chamber is in the form of annular discs, disk is made up of two parts, centre is the roundel 12 of indent, periphery is the curved annulus in cross section 13, arc-shaped transition between roundel and annulus, the top of arc-shaped transition and the outer surface of interlayer are separated, and arc-shaped transition place is provided with the passage 17 of some connection annulus and roundel, and the diameter of roundel is less than the diameter of the center of face outer chamber place interlayer.The generator of the trigger-type extinguishing device in face outer chamber is one, and in the space of fire extinguishing bag in roundel indent, generator is fixed in the middle of the bottom of roundel, and the gas ejection ports of generator extend in fire extinguishing bag.
Side outer chamber is divided into four lateral mass according to four sides of housing, and the fire extinguishing bag of the trigger-type extinguishing device in side outer chamber is divided into four, and each is all distributed in whole lateral mass.Interlayer in each lateral mass is separated into multiple by gap, and the generator of the trigger-type extinguishing device in each lateral mass is multiple, and the quantity of generator is identical with the quantity of piece, the corresponding piece of each generator, interlock mutually between the generator in same lateral mass.The trigger unit of the trigger-type extinguishing device in side outer chamber is connected on the outer wall of interlayer.
Embodiment 2: a kind of lithium battery with extinguishing device, be with embodiment difference, the outer wrap of battery Soft Roll has protection bag, protection bag is enclosed construction, in protection bag, be filled with extinguish material, protection bag is one, and protection handbag wraps all battery Soft Rolls in inner chamber body.All the other structures are with reference to embodiment 1.
Above-described embodiment is two kinds of preferred version of the present invention, not the present invention is done to any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim records.
Claims (10)
1. the lithium battery with extinguishing device, comprise battery container (1), battery Soft Roll (6) is installed in housing, it is characterized in that enclosure interior is divided into two cavitys by interlayer (2), be respectively inner chamber body and outer chamber (4), outer chamber is in inner chamber body outside, battery Soft Roll is installed in inner chamber body, interlayer is to raise and/or temperature raises and evagination the deformable body that can break with battery pressure, in outer chamber, be provided with trigger-type extinguishing device, trigger-type extinguishing device comprises the trigger unit (8) being triggered by interlayer distortion, include the fire extinguishing bag (16) of extinguish material and extend into the interior generator (7) by trigger unit triggering for generating gas of fire extinguishing bag.
2. the lithium battery with extinguishing device according to claim 1, the center (14) that the middle part of each that it is characterized in that interlayer is monoblock, the periphery of center is provided with groove and forms the predefined region (11) of breaking, on each of interlayer, be provided with multiple tracks gap (9), gap communication with cavity body and outer chamber, start and be radiated entends from the periphery of center in gap.
3. the lithium battery with extinguishing device according to claim 1, is characterized in that being connected with supporting bracket (3) between interlayer and the outer wall of housing, and supporting bracket is fixed on the edge of housing, is provided with through hole in supporting bracket.
4. according to the lithium battery with extinguishing device described in claim 1 or 2 or 3, it is characterized in that outer chamber is divided into two kinds, a kind of is corresponding housing front and face outer chamber (10) below, and another kind is the side outer chamber (15) of corresponding housing surrounding.
5. the lithium battery with extinguishing device according to claim 4, the generator that it is characterized in that the trigger-type extinguishing device in face outer chamber is one, and centre position in face outer chamber; The generator of the trigger-type extinguishing device in side outer chamber is multiple, each generator piece that the gap on respective side outer chamber place interlayer is separated respectively, interlock mutually between multiple generators.
6. the lithium battery with extinguishing device according to claim 4, the trigger unit that it is characterized in that the trigger-type extinguishing device in face outer chamber is in the form of annular discs, disk is made up of two parts, centre is the roundel (12) of indent, periphery is the curved annulus in cross section (13), arc-shaped transition between roundel and annulus, arc-shaped transition place is provided with the passage (17) of some connection annulus and roundel.
7. the lithium battery with extinguishing device according to claim 6, it is characterized in that the diameter of roundel is less than the diameter of the center of face outer chamber place interlayer, in the space of fire extinguishing bag in roundel indent, generator is fixed in the middle of the bottom of roundel, and the gas ejection ports of generator extend in fire extinguishing bag.
8. the lithium battery with extinguishing device according to claim 4, is characterized in that side outer chamber is divided into four lateral mass according to four sides of housing, and the fire extinguishing bag of the trigger-type extinguishing device in side outer chamber is divided into four, and each is all distributed in whole lateral mass.
9. the lithium battery with extinguishing device according to claim 8, is characterized in that the trigger unit of the trigger-type extinguishing device in side outer chamber is connected on the outer wall of interlayer.
10. according to the lithium battery with extinguishing device described in claim 1 or 2 or 3, the outer wrap that it is characterized in that battery Soft Roll has protection bag, and protection bag is enclosed construction, in protection bag, is filled with extinguish material, protection bag is one, and protection handbag wraps all battery Soft Rolls in inner chamber body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053242.7A CN104064692B (en) | 2014-02-18 | 2014-02-18 | With the lithium battery of extinguishing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410053242.7A CN104064692B (en) | 2014-02-18 | 2014-02-18 | With the lithium battery of extinguishing device |
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| CN104064692A true CN104064692A (en) | 2014-09-24 |
| CN104064692B CN104064692B (en) | 2016-03-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104953083A (en) * | 2015-06-08 | 2015-09-30 | 浙江超威创元实业有限公司 | Battery cell structure capable of preventing battery fire explosion and lithium ion battery adopting battery cell structure |
| CN106058337A (en) * | 2016-07-26 | 2016-10-26 | 江苏索尔新能源科技股份有限公司 | Self-extinguishing battery |
| CN106207030A (en) * | 2016-07-27 | 2016-12-07 | 芜湖凯尔电气科技有限公司 | The high/low temperature set of cells of safety |
| WO2018120654A1 (en) * | 2016-12-30 | 2018-07-05 | 比亚迪股份有限公司 | Protection device for battery, battery, battery pack, and vehicle |
| CN110073517A (en) * | 2017-04-25 | 2019-07-30 | 株式会社Lg化学 | With the battery unit for improving safety |
| CN112448071A (en) * | 2019-09-03 | 2021-03-05 | 飞尔金株式会社 | Capsule type fire extinguishing device for preventing battery explosion and battery with capsule type fire extinguishing device |
| CN113614982A (en) * | 2019-05-14 | 2021-11-05 | 株式会社Lg新能源 | Battery module and battery pack including the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104953083A (en) * | 2015-06-08 | 2015-09-30 | 浙江超威创元实业有限公司 | Battery cell structure capable of preventing battery fire explosion and lithium ion battery adopting battery cell structure |
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| WO2018120654A1 (en) * | 2016-12-30 | 2018-07-05 | 比亚迪股份有限公司 | Protection device for battery, battery, battery pack, and vehicle |
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| CN113614982A (en) * | 2019-05-14 | 2021-11-05 | 株式会社Lg新能源 | Battery module and battery pack including the same |
| CN112448071A (en) * | 2019-09-03 | 2021-03-05 | 飞尔金株式会社 | Capsule type fire extinguishing device for preventing battery explosion and battery with capsule type fire extinguishing device |
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| CN104064692B (en) | 2016-03-02 |
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