CN109585716A - A kind of battery cover board - Google Patents
A kind of battery cover board Download PDFInfo
- Publication number
- CN109585716A CN109585716A CN201710911652.4A CN201710911652A CN109585716A CN 109585716 A CN109585716 A CN 109585716A CN 201710911652 A CN201710911652 A CN 201710911652A CN 109585716 A CN109585716 A CN 109585716A
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- China
- Prior art keywords
- cover board
- battery
- extinguishing chemical
- cavity
- board body
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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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- 239000000126 substance Substances 0.000 claims abstract description 102
- 238000010276 construction Methods 0.000 claims abstract description 56
- 238000009434 installation Methods 0.000 claims abstract description 9
- 238000005336 cracking Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000178 monomer Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000001934 delay Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000012954 risk control Methods 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The present invention relates to a kind of battery cover boards, to solve the problems, such as that it is insecure that battery fire extinguishing system in the prior art uses, battery cover board includes the cover board body for being encapsulated at battery case open top, cover board body is equipped with the installation position for installing output terminal, battery cover board further includes the extinguishing chemical cavity on cover board body, extinguishing chemical cavity has the extinguishing chemical accommodating chamber for storing extinguishing chemical, the cavity wall of extinguishing chemical cavity includes the cavity wall part for separating extinguishing chemical accommodating chamber Yu battery case inner cavity, it is opened when the pressure that the cavity wall part is equipped in battery case inner cavity reaches setting value to be connected to the internal blast resistance construction of extinguishing chemical accommodating chamber and battery case inner cavity.Battery cover board of the invention can put out a fire automatically when fire behavior occurs in battery unit, more efficient, and use is more reliable, while can choose the extinguishing chemical in even higher than battery unit service life identical as the battery unit service life in service life, and not needing the later period is safeguarded.
Description
Technical field
The present invention relates to a kind of battery cover boards.
Background technique
The rapid growth of new-energy automobile market, the occupation rate of market fast lifting of new-energy automobile, to continual mileage
It is required that it is increasingly longer, it is significantly promoted this requires the specific energy of power battery has, is wanted in the specific energy of the year two thousand thirty power battery
Promote 300wh/kg.With the promotion of power battery specific energy density, the security requirement of power battery is also promoted therewith: being pressed
According to country and the relevant criterion of industry, it is desirable that power battery overcharge, over-discharge, do not occur under the abuse conditions such as high temperature thermal runaway and
Thermal runaway extension.But there is no good solutions for current battery technology.This results in the power even if high-energy-density
Battery can by country and industry standard under, but compare comparatively safe LiFePO4 system battery, high-energy-density it is close
The power battery of degree is also without corresponding technical advantage.
According to can consult reference materials, from 2010 to 2015 year during occurred a lot of electric vehicles in the process of running, vehicle touches
It hits, the case of on fire, explosion, even casualties occurs during natural calamity, vehicle therein includes passenger car, commercial vehicle
Deng.But the safety problem of battery system can not be fundamentally solved for existing battery technology level, it also can not be good
Compatible battery high-energy and high security, so the safety wind for needing to go to consider control battery system from the application aspect of battery
Danger, guarantees the life security of passenger.Security risk control when to battery applications becomes new-energy automobile industry at this stage and needs
The technical issues of solution.
At this stage for the monitoring of the fire behavior of battery and battery system and fire-fighting technique, mostly as Authorization Notice No. is
Shown in the utility model patent of CN205964755U, the fire extinguishing system of use includes the monitoring to battery fire behavior state parameter, packet
It includes the temperature to battery, voltage, gas, salt fog, light etc. to detect, battery fire alarm is then established by relevant algorithm
Model theoretically monitors the fire behavior state of simultaneously early warning battery.But under actual conditions, the extinguishing device of battery system is very multiple
Miscellaneous, reliability, durability and service life are difficult to be consistent with battery system.The detector of battery key parameter uses the longevity
Life is well below battery.And there is the case where failing to report and reporting by mistake in battery system operational process.To temperature, electricity
The reliability of the detection mode of pressure, gas, salt fog, light etc. is unable to get solution, and it is accurate really to carry out to battery fire residence
Early warning.In the prior art, the mounting means of battery extinguishing device, fire-fighting mode will affect the sealing protection grade of Battery case,
Under extreme weather (storm water) and extreme operating condition, the safety of battery system is seriously affected.And existing battery fire extinguishing
Device is difficult in maintenance, and maintenance cost is high, and all uses high-pressure bottle substantially, and maintenance is dangerous.
In the prior art, battery modules generally include multiple serial or parallel connections or series-parallel battery unit, battery unit
Including battery case, battery case has battery case inner cavity, is equipped with battery core unit in battery case inner cavity, encapsulates in the open-mouth of battery case
There is cover board body, be convexly equipped with two output terminals on lateral surface of the cover board body backwards to battery core unit, in battery case inner cavity
Battery core unit tab it is corresponding with two output terminals it is conductive be connected, be additionally provided on cover board body and infused into battery case inner cavity
Enter the liquid injection hole of electrolyte.
Summary of the invention
The purpose of the present invention is to provide a kind of battery cover boards, to solve battery fire extinguishing system in the prior art using not
Reliable problem.
To achieve the above object, the technical solution of battery cover board of the present invention is:
Scheme one: a kind of battery cover board, including the cover board body for being encapsulated at battery case open top, cover board body
It is equipped with the installation position for installing output terminal, battery cover board further includes the extinguishing chemical cavity on cover board body, fire extinguishing
Agent cavity has the extinguishing chemical accommodating chamber for storing extinguishing chemical, and the cavity wall of extinguishing chemical cavity includes holding for separating extinguishing chemical
Receive the cavity wall part of chamber and battery case inner cavity, the unlatching when pressure which is equipped in battery case inner cavity reaches setting value
To be connected to the internal blast resistance construction of extinguishing chemical accommodating chamber and battery case inner cavity.
Battery cover board provided by the invention includes cover board body, and cover board body is equipped with installs output terminal when in use
Installation position is additionally provided with extinguishing chemical cavity on battery cover board, there is the extinguishing chemical for storing extinguishing chemical to accommodate in extinguishing chemical cavity
Chamber, extinguishing chemical cavity include cavity inner wall and chamber outer wall, and cavity inner wall separates extinguishing chemical accommodating chamber and battery case inner cavity,
Chamber outer wall will separate outside extinguishing chemical accommodating chamber and battery unit, and wall is equipped with internal blast resistance construction in the cavity, in chamber
External wall is equipped with external blast resistance construction.In use, the pressure of battery case inner cavity rises when occurring fire behavior in battery case inner cavity,
Internal blast resistance construction is opened, the extinguishing chemical in extinguishing chemical accommodating chamber enters in battery case inner cavity, establishes in battery case inner cavity
Insulate network comprehensively and effectively, delays the release of the energy content of battery, and the fire behavior in battery case inner cavity is inhibited and put out a fire.With
Control fire extinguishing is first detected or is carried out in the prior art when fire behavior occurs in battery unit to compare, it is more efficient, using more may be used
It leans on, while can choose the extinguishing chemical in even higher than battery unit service life identical as the battery unit service life in service life, do not need the later period
It is safeguarded.
Scheme two: on the basis of scheme one, the cavity wall of extinguishing chemical cavity further includes holding for separating the extinguishing chemical
Receive the cavity wall part of chamber and battery case inner cavity, the pressure that the cavity wall part and/or cover board body are equipped in battery case inner cavity reaches
It is opened when to setting value with to the external blast resistance construction of pressure release outside battery unit.
When the pressure in battery case reaches the setup pressure value of external blast resistance construction, external blast resistance construction is opened to battery
Pressure release outside unit prevents battery unit from rupture or explosion occurs.
Scheme three: on the basis of scheme two, extinguishing chemical cavity includes surrounding the extinguishing chemical jointly with cover board body to hold
Receive the cover of chamber, cover is set to the outside of cover board body, and cover is equipped with the external blast resistance construction, on cover board body with institute
It states cover and surrounds the part of extinguishing chemical accommodating chamber jointly equipped with the internal blast resistance construction.
Scheme four: on the basis of scheme three, cover includes the end face with cover board body parallel arrangement, and end face is equipped with institute
The external blast resistance construction stated.
Scheme five: on the basis of scheme two, extinguishing chemical cavity includes surrounding the extinguishing chemical jointly with cover board body
The cover of accommodating chamber, cover are set to the inside of cover board body, and cover is equipped with the internal blast resistance construction, on cover board body with
The part that the cover surrounds extinguishing chemical accommodating chamber jointly is equipped with the external blast resistance construction.
Scheme six: on the basis of scheme five, cover includes the end face with cover board body parallel arrangement, and end face is equipped with institute
The internal blast resistance construction stated.
Scheme seven: on the basis of scheme two, the extinguishing chemical cavity runs through cover board along the sealing of cover board body thickness direction
Ontology is located at the cavity wall part on the inside of cover board body in extinguishing chemical cavity and is equipped with the internal blast resistance construction, is located at cover board
The cavity wall part of outer body is equipped with the external blast resistance construction.
Scheme eight: scheme three into scheme six any one on the basis of, cover board body is equipped with notch towards cover
The groove of side, the cover insertion groove is interior and seals assembly with groove.
Scheme nine: scheme two into scheme seven any one on the basis of, the cracking pressure of internal blast resistance construction is less than
The cracking pressure of external blast resistance construction.
Scheme ten: scheme two into scheme seven any one on the basis of, internal, external blast resistance construction is in correspondence
Setting pressure under the explosion-proof valve opened.
Scheme 11: scheme one into scheme seven any one on the basis of, extinguishing chemical cavity is equipped with for going out
The extinguishing chemical injection hole of extinguishing chemical is injected in fiery agent accommodating chamber.
Scheme 12: scheme one into scheme seven any one on the basis of, store in the extinguishing chemical accommodating chamber
The extinguishing chemical.
Detailed description of the invention
Fig. 1 is the perspective view of battery cover board embodiment one of the present invention；
Fig. 2 is the main view of Fig. 1；
Fig. 3 is the top view of Fig. 2；
Fig. 4 is the bottom view of Fig. 2；
Fig. 5 is the schematic diagram of the battery unit assembled using the battery cover board of embodiment one；
Fig. 6 is the cross-sectional view in Fig. 5 at battery cover board；
Fig. 7 is the schematic diagram of the battery modules of multiple battery unit compositions shown in fig. 5；
Fig. 8 is the partial sectional view of Fig. 7；
Fig. 9 is the main view of battery cover board embodiment two of the present invention；
Figure 10 is the top view of Fig. 9；
Figure 11 is the bottom view of Fig. 9；
Figure 12 is the schematic diagram of the battery unit assembled using the battery cover board of embodiment two；
Figure 13 is the partial sectional view of Figure 12；
Figure 14 is the schematic diagram of the battery modules of the composition of battery unit shown in multiple Figure 12；
Figure 15 is the partial sectional view of Figure 14；
Figure 16 is the schematic diagram in battery cover board embodiment five of the present invention at extinguishing chemical cavity；
Figure 17 is the schematic diagram in battery cover board embodiment six of the present invention at extinguishing chemical cavity.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment one of battery cover board of the invention, as shown in Figures 1 to 8, battery cover board include cover board body 1,
Seal buckle has installation position on battery case 8 to cover board body 1 when in use on cover board body 1, and installation position is equipped with output end
Son 2, output terminal 2 are used to be connected with the tab for the battery core unit for being placed in battery case inner cavity, and connection type is that laser welding etc. is solid
Determine connection type, output terminal is to draw the electric current of battery core unit.Liquid injection hole 3 is additionally provided on cover board body 1, be used to
Electrolyte is injected in the inner cavity of battery case 8.Opened up on the lateral surface of cover board body 1 it is fluted, the notch of groove towards outside,
Cover 5 is sealed and installed in groove, cover 5 is the structure of the housing shape of aluminum.Cover 5 by laser welding, fusion or other
The mode that is fixedly connected be arranged in 1 groove of cover board body, certainly, in other examples, cover 5 can also be with cover board sheet
Body 1 is wholely set.In internal explosion-proof valve 4 is located at by cover 5, cover 5 defines extinguishing chemical with cover board body 1 together and accommodates
Chamber.Internal explosion-proof valve 4 is installed, internal explosion-proof valve 4 can be opened or be ruptured in the pressure of setting, make to go out on the slot bottom of groove
Fiery agent accommodating chamber is connected to battery case inner cavity.Injection hole 7 is offered on cover, it can be by extinguishing chemical by being injected in injection hole 7
In extinguishing chemical accommodating chamber.In addition, battery cover board of the invention further includes that extinguishing chemical is being injected into extinguishing chemical receiving by injection hole 7
The plug for blocking injection hole after chamber.In the present embodiment, cover 5 and common group of cover board body part for forming extinguishing chemical accommodating chamber
At extinguishing chemical cavity.In the present embodiment, internal explosion-proof valve 4 is set in the cavity wall of extinguishing chemical cavity.
As shown in Figure 1, cover 5 includes with the top end face of cover board body parallel interval arrangement and positioned at top end face and lid
Circumferential surface between plate ontology, offers external explosion-proof valve 6 on the end face of cover, and external explosion-proof valve 6 can be in the pressure of setting
Lower unlatching or rupture make to be connected to outside extinguishing chemical accommodating chamber and battery unit.Wherein, external explosion-proof valve 6 and internal explosion-proof valve 4
Structure it is identical, be explosion-proof membrane structure.The cracking pressure of external explosion-proof valve 6 is greater than the cracking pressure of internal explosion-proof valve 4.
Such as the structural schematic diagram of the battery cover board that Fig. 5 and Fig. 6 is the present embodiment and the battery unit that battery case is assembled into, lid
It is fixed and is connected by way of welding or others between plate ontology 1 and battery case 8, insulation system is set between the two.
Such as the schematic diagram that Fig. 7 and Fig. 8 is the battery modules that the battery unit in the present embodiment forms.
The production process of above-mentioned battery unit is as follows:
Step 1: assembled battery cover board installs output terminal 2 and relevant insulating element, in cover board on cover board body 1
Internal explosion-proof valve 4 is installed, later in the external fixed enclosure 5 of internal explosion-proof valve 4, setting installation is external on cover 5 on ontology
Explosion-proof valve 6 and injection hole 7, in the periphery setting insulating element of cover board body.When by battery cover board by the modes such as welding, fusing
After battery case assembling, the extinguishing chemical accommodating chamber that cover 5 and cover board body 1 surround is located at the outside of battery unit.
Step 2: the production of battery core unit carries out mixing, coating, roll-in, slitting, production pole piece according to technical data,
Battery core unit is made by way of winding or lamination again.
Step 3: the battery that will be made in the positive and negative tab of one or more battery core units of step 2 production and step 1
Cover board output terminal is corresponding to be connected and is electrically connected in a manner of the fusions such as laser welding or ultrasonic bonding.
Step 4: the battery core unit that step 3 makes is put into battery case, fuses battery case using modes such as laser weldings
With battery cover board.Insulating element is set between battery core unit and battery case, between battery case and battery cover board, prevents battery core list
Short circuit between member, battery case and battery cover board, and meet the performance requirement of the insulation pressure resistance of requirements of the national standard.
Step 5: by the battery of step 4 production under conditions of defined ambient humidity (less than 1%), according to technique skill
The regulation of art parameter carries out electrolyte injection.
Step 5: being had been injected into the battery of electrolyte by step 6, is shelved according to technical data requirement, aging
And the processes such as pre- chemical conversion.
Step 7: the battery unit of step 6 production is subjected to whole sealing.
Step 8: the battery unit sealed eventually that step 7 is made, according to the requirement of technical data by extinguishing chemical
It injects in extinguishing chemical accommodating chamber.Wherein, extinguishing chemical can be produced using Shiji Lianbao Fire Fighting New Technology Co., Ltd., Beijing
TKD-8431 extinguishing chemical or the NovecTM1230 extinguishing chemical of 3M company production, the performance requirement of extinguishing chemical need to meet associated row
Industry and requirements of the national standard.In use, not needing installation detection device, extinguishing chemical release in extinguishing chemical and extinguishing chemical accommodating chamber
The others device such as required driving device.Wherein, the physics of above-mentioned extinguishing chemical, chemical parameters are as shown in table 1.
1 extinguishing chemical parameter list of table
| Property | Unit | |
| Purity | Mol% | >=99% |
| Acidity | ppm | < 3 |
| Water content | % | ≤0.001 |
| Non-volatile residue | g.(100ml)-1 | ≤0.05 |
| Boiling point (1atm) | ℃ | ≥55.0 |
| Freezing point | ℃ | ≤-60 |
| Density, saturated liquid (25 DEG C) | g/ml | ≈1.60 |
| Density, gas (1atm, 25 DEG C) | g/ml | ≈0.02 |
| Specific volume, gas (1atm, 25 DEG C) | m3/kg | ≈0.05 |
| Liquid viscosity (25 DEG C) | Centistoke (lentor) | ≈0.40(0.60) |
| Solubility (25 DEG C) of the water in TKD-8341 | Weight ratio | < 0.001% |
| Vapour pressure (25 DEG C) | bar(psia) | 0.40(6.0) |
| Dielectric strength | kV | ≥50 |
Step 9: the injection hole for having been injected into extinguishing chemical cavity in the battery unit of extinguishing chemical of step 8 is carried out close
Envelope.
Step 10: by step 9 complete battery unit according to technical data require cleaned, toast and into
The subsequent process of row.
It can satisfy national standard and the relevant single battery battery of professional standard according to the battery that above-mentioned steps are completed
The requirement of the thermal runaway expanding test of thermal runaway test requirements document and battery system (Battery case).
Battery cover board of the invention when in use, when there is fire behavior in battery case inner cavity, will lead to battery case chamber pressure
Increase, when pressure reaches the unlatching or fracture pressure of internal explosion-proof valve, internal explosion-proof valve is opened, going out in extinguishing chemical accommodating chamber
Fiery agent enters battery case inner cavity, establishes comprehensively and the network that effectively insulate in battery case inner cavity, to the fire of cell internal
Feelings are inhibited and are put out a fire.When the pressure of battery case inner cavity continues growing the unlatching or fracture pressure for reaching external explosion-proof valve,
External explosion-proof valve is opened, and discharges the pressure of battery case by external explosion-proof valve, and battery case will not occur to rupture or explode.
Battery cover board of the invention can't destroy the structure of original battery structure and battery modules, will not destroy electricity
The sealing protection performance of Chi Mo group is managed, equipment with technique, the quality of existing battery unit, battery modules and battery system
Parameter forms good matching.
Extinguishing chemical used in the present invention has excellent electrical insulation capability, is conducive to have comprehensively in inside battery foundation
The insulation network of effect, delays the release of the energy content of battery, and the function of inhibition, fire extinguishing is played to the fire behavior inside battery case, prevents fire
Feelings, which are stretched, leads to thermal runaway.And extinguishing chemical used in the present invention has stable chemical property, and cell electrical is not caused to be returned
Short out road does not react with metal and nonmetallic materials, corrosion-free, and nontoxic, corresponding performance indicator also meets corresponding state
Family's standard requirements.Extinguishing chemical can cover all combustibles of battery catches fire, and extinguishing chemical is that can cover solid fire, liquid
Fire, gas fire, metal be fiery, in electrical fire one or more kinds of fire composite fire extinguishing agent.
In addition, extinguishing chemical has normal pressure storage, the characteristic of long-life storage is suitable with the service life of battery, does not need
Extinguishing chemical itself is replaced within the battery quality guarantee period.
In the present invention, battery core unit is equipped in battery case inner cavity, battery core unit is lamination or winding-structure.Battery core list
Member includes the monomer being composed by series system, parallel way, series-parallel mixed connection mode or other modes, and monomer includes
One or more monomeric units.Monomer includes rectangular, cylindrical monomer or Soft Roll monomer or other special-shaped monomers.
The schematic diagram of battery cover board embodiment two of the present invention, the difference master as shown in Fig. 9 to Figure 15, with embodiment one
Be: cover 5 is set on the medial surface of cover board body 1, and the part of cover 5 and cover board body 1 has collectively constituted extinguishing chemical chamber
Body.It is equipped with internal explosion-proof valve 6 in the end face of cover 5, external explosion-proof valve 4 is equipped on cover board body 1, wherein internal explosion-proof valve 6
Unlatching/fracture pressure be less than external explosion-proof valve 4 unlatching/fracture pressure.After battery cover board is assembled on battery case 8,
Cover 5 is fully located inside battery, and in the present embodiment, injection hole 7 is provided on cover board body 1.
The making step of battery unit in the present embodiment and the making step of embodiment one are substantially the same, and are only being made
When battery cover board, cover is arranged in the other side.
In other embodiments, the constituent of extinguishing chemical can be selected according to the actual situation.
In the above embodiments, internal explosion-proof valve is internal blast resistance construction, and external explosion-proof valve is external blast resistance construction,
Explosion-proof valve includes rupture pressure disc, can be ruptured after the pressure that rupture pressure disc reaches setting, realizes and opens.In other embodiments, internal,
External blast resistance construction can be relief valve or other can be realized the other structures opened or ruptured when pressure is excessive.
The specific embodiment three of battery cover board of the present invention: essentially consisting in the difference of embodiment one and embodiment two,
The internal blast resistance construction of extinguishing chemical cavity and/or the quantity of external blast resistance construction are at least two, meanwhile, the setting of blast resistance construction
Position can be redesigned according to the actual situation, and such as blast resistance construction is arranged on circumferential surface.
The specific embodiment four of battery cover board of the present invention: essentially consisting in the difference of above-described embodiment, extinguishing chemical chamber
The shape of body can be other shapes, such as rectangular.
The specific embodiment five of battery cover board of the present invention: as shown in figure 16, mainly exist with the difference of above-described embodiment
In using the structure of cover board body itself in the above embodiments, mounting cup body forms extinguishing chemical cavity on cover board body.
In the present embodiment, extinguishing chemical cavity 5 is individual closed cavity, and closed cavity runs through and consolidates along the thickness direction of cover board body 1
It is scheduled on cover board body, makes closed cavity that there is the part being located on the inside of cover board body, it may have on the outside of cover board body
Part, the part on the inside of cover board body are cavity inner wall, and the part on the outside of cover board body is chamber outer wall.?
Internal blast resistance construction 4 is offered on cavity inner wall, and external blast resistance construction 6 is offered on chamber outer wall.
The specific embodiment six of battery cover board of the present invention: as shown in figure 17, mainly exist with the difference of above-described embodiment
In, the cover quantity in the present embodiment is two, including outside cover 9 and inside cover 10, through-hole is opened up on cover board body,
Two covers are located inside and outside through-hole upper respectively and extinguishing chemical cavity are collectively formed with cover board body 1.In the present embodiment,
Cover on the inside of cover board body forms cavity inner wall, and the cover on the outside of cover board body forms chamber outer wall.In cavity
Outer wall is equipped with external blast resistance construction 11, and wall is equipped with internal blast resistance construction 12 in the cavity.
The specific embodiment seven of battery cover board of the present invention: on the basis of above-described embodiment, it is arranged on cover board body
Additional external blast resistance construction, the cracking pressure of the external blast resistance construction on cover board body are greater than the unlatching pressure of internal blast resistance construction
Power.The cracking pressure of external blast resistance construction can phase with the cracking pressure of blast resistance construction external on extinguishing chemical cavity on cover board body
Together, it can also be different.
The specific embodiment eight of battery cover board of the present invention cancels pair on extinguishing chemical cavity on the basis of embodiment seven
Outer blast resistance construction only retains the external blast resistance construction on battery cover board ontology.
The specific embodiment nine of battery cover board of the present invention: in the above embodiments, the cracking pressure of external blast resistance construction is equal
Greater than the cracking pressure of internal blast resistance construction, this is based on the case where pressure continues raising after extinguishing chemical injects battery case inner cavity
Under, in the other cases, after injecting battery case inner cavity such as extinguishing chemical, the pressure of battery case inner cavity becomes smaller, at this point, externally explosion-proof
The cracking pressure of structure can be equal to the cracking pressure of internal blast resistance construction.Likewise, externally preventing when extinguishing chemical cavity is equipped with
When quick-fried structure, the cracking pressure of the external blast resistance construction can be less than the cracking pressure of internal blast resistance construction.But battery cover board sheet
The cracking pressure of external blast resistance construction on body cannot be less than the cracking pressure of internal blast resistance construction.
Claims (10)
1. a kind of battery cover board, including the cover board body for being encapsulated at battery case open top, cover board body, which is equipped with, to be used
In the installation position of installation output terminal, it is characterised in that: battery cover board further includes the extinguishing chemical cavity on cover board body, is gone out
Fiery agent cavity has the extinguishing chemical accommodating chamber for storing extinguishing chemical, and the cavity wall of extinguishing chemical cavity includes for separating extinguishing chemical
The cavity wall part of accommodating chamber and battery case inner cavity, the pressure which is equipped in battery case inner cavity are opened when reaching setting value
It opens to be connected to the internal blast resistance construction of extinguishing chemical accommodating chamber and battery case inner cavity.
2. battery cover board according to claim 1, it is characterised in that: the cavity wall of extinguishing chemical cavity further includes for separating
The cavity wall part of the extinguishing chemical accommodating chamber and battery case inner cavity, the cavity wall part and/or cover board body are equipped in battery case
It is opened when the pressure of inner cavity reaches setting value with to the external blast resistance construction of pressure release outside battery unit.
3. battery cover board according to claim 2, it is characterised in that: extinguishing chemical cavity includes surrounding jointly with cover board body
The cover of the extinguishing chemical accommodating chamber, cover are set to the outside of cover board body, and cover is equipped with the external blast resistance construction, lid
The part for surrounding extinguishing chemical accommodating chamber on plate ontology jointly with the cover is equipped with the internal blast resistance construction.
4. battery cover board according to claim 3, it is characterised in that: cover includes the end with cover board body parallel arrangement
Face, end face are equipped with the external blast resistance construction.
5. battery cover board according to claim 2, it is characterised in that: extinguishing chemical cavity includes surrounding jointly with cover board body
The cover of the extinguishing chemical accommodating chamber, cover are set to the inside of cover board body, and cover is equipped with the internal blast resistance construction,
The part for surrounding extinguishing chemical accommodating chamber on cover board body jointly with the cover is equipped with the external blast resistance construction.
6. battery cover board according to claim 5, it is characterised in that: cover includes the end with cover board body parallel arrangement
Face, end face are equipped with the internal blast resistance construction.
7. battery cover board according to claim 2, it is characterised in that: the extinguishing chemical cavity is along cover board body thickness direction
Sealing runs through cover board body, and the cavity wall part on the inside of cover board body is located in extinguishing chemical cavity and is equipped with the internal explosion-proof knot
Structure, the cavity wall part on the outside of cover board body are equipped with the external blast resistance construction.
8. according to battery cover board described in claim 3-6 any one, it is characterised in that: cover board body is equipped with notch direction
The groove of cover side, the cover insertion groove is interior and seals assembly with groove.
9. according to battery cover board described in claim 2-7 any one, it is characterised in that: the cracking pressure of internal blast resistance construction
Less than the cracking pressure of external blast resistance construction.
10. according to battery cover board described in claim 2-7 any one, it is characterised in that: internal, external blast resistance construction is
The explosion-proof valve opened under corresponding setting pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710911652.4A CN109585716A (en) | 2017-09-29 | 2017-09-29 | A kind of battery cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710911652.4A CN109585716A (en) | 2017-09-29 | 2017-09-29 | A kind of battery cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109585716A true CN109585716A (en) | 2019-04-05 |
Family
ID=65919190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710911652.4A Pending CN109585716A (en) | 2017-09-29 | 2017-09-29 | A kind of battery cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109585716A (en) |
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| KR20040105338A (en) * | 2003-06-07 | 2004-12-16 | 주식회사 코캄엔지니어링 | Lithium secondary battery |
| JP2013161735A (en) * | 2012-02-08 | 2013-08-19 | Gs Yuasa Corp | Power storage device and power storage module |
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| CN207690840U (en) * | 2017-09-29 | 2018-08-03 | 郑州宇通客车股份有限公司 | Battery cover board |
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2017
- 2017-09-29 CN CN201710911652.4A patent/CN109585716A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040105338A (en) * | 2003-06-07 | 2004-12-16 | 주식회사 코캄엔지니어링 | Lithium secondary battery |
| JP2013161735A (en) * | 2012-02-08 | 2013-08-19 | Gs Yuasa Corp | Power storage device and power storage module |
| JP2013218871A (en) * | 2012-04-09 | 2013-10-24 | Toyota Industries Corp | Power storage device and secondary battery having structure thereof |
| CN206098572U (en) * | 2016-09-18 | 2017-04-12 | 广东精进能源有限公司 | Bleed and annotate liquid valve formula cylinder battery |
| CN207690840U (en) * | 2017-09-29 | 2018-08-03 | 郑州宇通客车股份有限公司 | Battery cover board |
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Country or region after: China Address after: No. 6 Yutong Road, Guancheng Hui District, Zhengzhou City, Henan Province Applicant after: Yutong Bus Co.,Ltd. Address before: Yutong Industrial Park, Shibalihe, Zhengzhou City, Henan Province Applicant before: ZHENGZHOU YUTONG BUS Co.,Ltd. Country or region before: China |