CN207602663U - Prevent the aerosol cellular board and battery module structure of power battery thermal runaway extension - Google Patents
Prevent the aerosol cellular board and battery module structure of power battery thermal runaway extension Download PDFInfo
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- CN207602663U CN207602663U CN201721734425.0U CN201721734425U CN207602663U CN 207602663 U CN207602663 U CN 207602663U CN 201721734425 U CN201721734425 U CN 201721734425U CN 207602663 U CN207602663 U CN 207602663U
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- aerosol
- cellular board
- battery module
- battery
- power battery
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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
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Abstract
The utility model discloses a kind of aerosol cellular board for preventing the extension of power battery thermal runaway, belong to power battery security technology area, including ceramic honey comb layer, filled with extinguishing chemical in the ceramic honey comb layer, the both sides of ceramic honey comb layer are symmetrically installed with adhesive layer, flame-resistant insulation paper layer and flame-resistant insulation film layer successively from the inside to the outside；A kind of battery module structure is additionally provided, aerosol cellular board described in any one of the above embodiments is installed in the battery modules, the battery modules include cylindrical power battery module and square power battery module.The structure and design of material that the utility model passes through aerosol cellular board, and the PC plate for being substituted routine should be in power battery module structure design, can its calorie spread effectively be cut off from thermal runaway extension mechanism, so as to which the generation for significantly reducing the safety accident of thermal runaway extension may.
Description
Technical field
The utility model is related to a kind of aerosol cellular board and battery module structure for preventing the extension of power battery thermal runaway,
Belong to power battery security technology area.
Background technology
During power battery safety is new-energy automobile large-scale promotion application, each side's most focus of attention problem it
One.
Electrokinetic cell system safety issue is broadly divided into 3 levels, i.e. " differentiation ", " triggering " and " extension "." differentiation "
Before referring to that power battery safety hazards occur, failure may experienced long-term evolutionary process；" triggering " is " differentiation " mistake
The turning point or emergency case of journey destroy electrokinetic cell system, and lead to safety hazards.Generally entering triggering
After stage, the energy inside lithium-ion-power cell will be concentrated in moment to be discharged, this process is irreversible and uncontrollable, also referred to as
Be thermal runaway (thermalrunaway).Acutely heating occurs for battery after thermal runaway, and temperature may be up to 1000 DEG C, and can be with
Observe smolder, it is on fire with explosion phenomena such as.After thermal runaway " triggering " occurs, the generation of thermal runaway " extension " should be prevented.
After thermal runaway triggering, the heat discharged after local monomer thermal runaway is propagated to surrounding, it would be possible to circumference battery
And the thermal runaway of battery around is caused, also referred to as " extension " of the thermal runaway in battery pack.Single battery thermal runaway is discharged
Energy be limited, but the extension of thermal runaway is caused in case of chain reaction, the energy of entire battery pack passes through heat and loses
Controlled release is released, it will is caused great harm.For example, 25Ah ternarys lithium ion battery (electric energy with about 0.1kWh)
The energy released during thermal runaway is about 630kJ, is equivalent to 0.15kg TNT equivalents.The pure electricity that there is 60kWh for one
For the electrokinetic cell system of motor-car, if all monomers release whole energy since thermal runaway extends, it will be equivalent to
Release the energy of 90kg TNT equivalents.That is, thermal runaway extension is once occur, caused by harm will be very big.Therefore,
People need to take precautions against the generation of thermal runaway extension, just thermal runaway should be confined to partial monosomy.
From the point of view of in the extension mechanism of thermal runaway, caused by the thermal runaway extension that surrounding's battery of thermal runaway monomer is subject to
When heating power is more than the heat radiation power of itself, the temperature of heated surrounding battery will increase, and heat then occurs and loses
Control extension.In battery module, there are mainly two types of paths for the heat transfer in thermal runaway expansion process：One kind be by heat conduction,
It being led including the heat conduction between the adjacent cell housing that is in direct contact and by what the pole connector between single battery carried out
Heat, another kind are that the high temperature substance that single battery explosion ejects is trickled down in the battery core of periphery and ignition, the process pair
The heat transfer of surrounding battery core is with scorching.
In the extension of prevention thermal runaway in the prior art, have for the prevention and control technology of the first heat transfer approach more
Kind.Such as the patent of battery and its lug (Authorization Notice No. CN 202585594U), a kind of pole that can prevent short circuit is disclosed
Ear, thermistor of the setting with positive temperature coefficient in the metal layer of battery pole ear, when the temperature on lug surface is increased to heat
During the critical value of quick resistance, the temperature of thermistor sharply increases several to dozens of orders of magnitude, is made so as to reduce external circuit
Into extreme currents generate, play the role of short-circuit protection；For another example a kind of lithium-ion-power cell Thermal protection connection structure and its
The patent of connection method (application number CN107134560A), disclose a kind of lithium-ion-power cell Thermal protection connection structure and its
Connection method, by assembling independent Thermal protection original paper for every piece of battery core, in battery thermal runaway, fusible metal melted by heat, from
And the physical electrical for cutting off single battery core and confluence copper bar connects, and quickly isolates overtemperature battery core, prevents thermal runaway battery core in excess temperature
Heat under state is transmitted to periphery battery core.
Control technology is extended for the prevention thermal runaway of second of heat transfer approach, finding report is few at present.Name
The referred to as patent of the battery cover (Authorization Notice No. CN103270643B) with fire-extinguishing function concurrently discloses a kind of with fire-extinguishing function concurrently
Battery cover, the fire suppression bottle setting of extinguishing fluid and compressed air will be stored to the inner surface of battery cover, when due to battery overheat or
Electric leakage is when causing fire occurs in battery, fire suppression bottle explosion, and fire suppression bottle spraying fire-extinguishing liquor to battery is to stamp out a fire.But due to
The fire suppression bottle is evenly arranged in top in the entire power battery box body of electric vehicle, when thermal runaway occurs for some single battery core
When, extinguishing fluid is uniformly trickled down in housing interior volume, can not ensure to spray enough agent for a certain piece of part single battery core
The extinguishing fluid of amount affects its extinguishing effect；Meanwhile with the increase that electric vehicle course continuation mileage requires, manufacturers of enterprise power
It strives and arranges more single battery cores in limited power battery babinet space, this increases any component for occupying space in babinet
Add and be proposed limitation.
Invention content
In view of the above-mentioned problems of the prior art, the utility model provides a kind of prevention power battery thermal runaway extension
Aerosol cellular board, under the premise of space requirement is not increased, each battery module structure in power battery box body is set
Prevention and control structure is constructed in meter, effectively single battery core is prevented to be spread due to thermal runaway explosion spray combustion to periphery single battery core.This
Utility model also provides the battery module structure for being equipped with the aerosol cellular board.
To achieve these goals, the aerosol bee of a kind of prevention power battery thermal runaway extension that the utility model uses
Nest plate, including ceramic honey comb layer, filled with extinguishing chemical in the ceramic honey comb layer, the both sides of ceramic honey comb layer are from the inside to the outside successively
It is symmetrically installed with adhesive layer, flame-resistant insulation paper layer and flame-resistant insulation film layer.
As an improvement, the thickness of the ceramic honey comb layer is 5-20mm, porosity 75%-90%, aperture 1-4mm.
In addition, the utility model additionally provides a kind of battery module structure, any of the above-described is installed in the battery modules
The aerosol cellular board, the battery modules include cylindrical power battery module and square power battery module.
As an improvement, the cylindrical power battery module includes several single battery cores one, battery bracket, electrode connecting piece
With aerosol cellular board, the single battery core one is cylinder, and single battery core one is fixed by two battery brackets, two battery branch
Electrode connecting piece is respectively equipped on the outside of frame, in one aerosol cellular board of each setting in the outside of electrode connecting piece, and by
Peripheral frame fastens.
As an improvement, two electrode connecting pieces are respectively welded on the positive and negative terminals of single battery core one.
As an improvement, be equipped with explosion-proof valve on the positive terminal of the single battery core one, the aerosol cellular board is vertically just
Against single battery core explosion-proof valve emission direction.
As an improvement, the square power battery module include several single battery cores two being square, upper bracket, side plate,
Upper plastic stent, lower plastic stent, side stand and aerosol cellular board；
The upside of the single battery core two is equipped with explosionproof hole, and the aerosol cellular board lies in a horizontal plane in the upper of explosionproof hole
Side, aerosol cellular board are fastened by upper bracket, two side plates, upper plastic stent, lower plastic stent and side stand.
The principle of aerosol cellular board inhibition thermal runaway extension is in the utility model：When some monomer electricity in battery modules
When thermal runaway explosion occurs in core, the high temperature substance ejected by explosion-proof valve passes through at a high speed the bonding of aerosol cellular board
Layer, flame-resistant insulation paper layer and flame-resistant insulation film layer, scattering enters in the crisscross gap in ceramic honey comb layer, by honeycomb
The cavity of ceramics is adsorbed, and the matrix diffusion that the heat entrained by high-temperature injection object runs through ceramic honey comb comes, and temperature obtains
To reduce rapidly, the unrestrained and its heat transfer to periphery battery core that rebounds of high-temperature injection object is avoided.Meanwhile work as single battery core
When the high-temperature injection object ejected is sprayed across aerosol cellular board cladding material, huge air pressure and ejecta punching
It hits the aerosol extinguishing agent triggered immediately in ceramic honey comb cavity to spray, the hole that aerosol extinguishing agent is passed through along ejecta
High-speed reverse is injected in the single battery core that thermal runaway occurs and its periphery, absorbs the single battery core and periphery heat-conducting connecting rapidly
High temperature heat, the heat of the thermal runaway single battery core is avoided to be transmitted to periphery single battery core.
Compared with prior art, the beneficial effects of the utility model are：
(1) the aerosol cellular board is placed in power battery module, can contact and control each single battery core, when
When thermal runaway occurs for some single battery core, the high temperature substance ejected is absorbed by the aerosol cellular board, heavier
It wants, the aerosol extinguishing agent entrained by the cellular board substantially can be quickly reversed and spray to the single battery core, targetedly
Ground carries out selective injection, to the extinguishing chemical of the single battery core injection sufficient dosage of local thermal runaway, not in entire battery case
Body inner homogeneous spray fire extinguishing agent, so as to ensure that extinguishing effect.
(2) the aerosol cellular board has good machinery and insulation fire performance, can be with alternate power battery modules knot
PC plate in structure without increasing any space requirement, can arrange multigroup different structure combination according to demand in Battery case
Power battery module.
Description of the drawings
Fig. 1 is the structure diagram of aerosol cellular board in the utility model；
Fig. 2 is the configuration schematic diagram of aerosol cellular board in the utility model；
Fig. 3 is the structure diagram of the cylindrical power battery module of the utility model；
Fig. 4 is assembling schematic diagram of the aerosol cellular board in cylindrical power battery module in the utility model；
Fig. 5 is assembling schematic diagram of the aerosol cellular board in square power battery module in the utility model；
In figure：1st, aerosol cellular board, 1a, section, 11, ceramic honey comb layer, 12, adhesive layer, 13, flame-resistant insulation paper layer,
14th, flame-resistant insulation film layer, 2, cylindrical power battery module, 21, single battery core one, 22, battery bracket, 23, electrode connection
Piece, 3, square power battery module, 31, single battery core two, 32, explosionproof hole, 33, upper bracket, 34, side plate, 35, upper plastics branch
Frame, 36, lower plastic stent, 37, side stand.
Specific embodiment
To make the objectives, technical solutions and advantages of the present invention clearer, below by accompanying drawings and embodiments,
The present invention is further described in detail.However, it should be understood that specific embodiment described herein is only used to solve
The utility model is released, the range being not intended to limit the utility model.
Unless otherwise defined, skill of all technical terms and scientific terms used herein with belonging to the utility model
The normally understood meaning of technical staff in art field is identical, herein in the term used in the description of the utility model only
It is the purpose in order to describe specific embodiment, it is not intended that in limitation the utility model.
The utility model provides a kind of aerosol cellular board for preventing the extension of power battery thermal runaway, as shown in Figure 1, its
Section 1a is unfolded, it can be seen that in cellular, inside includes several cavitys, decked explosion figure such as Fig. 2 institutes of the aerosol cellular board
Show, by the ceramic honey comb layer 11 filled with aerosol extinguishing agent at center, the adhesive layer 12 of both sides, flame-resistant insulation paper layer 13 and
Outermost flame-resistant insulation film layer 14 is coated on to form；
Wherein, the thickness of ceramic honey comb layer 11 is 5-20mm, porosity 75%-90%, aperture 1-4mm.Material used
Material includes Al2O3、Cr2O3、AlPO4, kaolin, bentonite etc., through mixing, be molded, dry, be burnt into and obtain, have the high machinery strong
Degree, good accumulation of heat thermal insulation and high temperature resistance.
The extinguishing chemical filled in ceramic honey comb layer 11 uses aerosol pulvis, and by weight percentage, ingredient mainly has
30-50%Sr (NO3)2, 15-30%KNO3, 15-25% basic magnesium carbonates, 5-10% burning binders.The aerosol is solid,
It is easy to filling and adsorption storage in the cavity inside ceramic honey comb layer 11.
In addition, the utility model additionally provides a kind of battery module structure, any of the above-described is installed in the battery modules
The aerosol cellular board, the battery modules include cylindrical power battery module and square power battery module.In electricity
In the structure design of pond group, aerosol cellular board 1 is vertically faced into single battery core explosion-proof valve emission direction.
Specifically, in the structure design applied to cylindrical power battery module 2, as shown in Figure 3, Figure 4, cylindrical monomer
Battery core 1 is parallelly fixed together according to connection in series-parallel connection request by battery bracket 22, and the electrode connecting piece 23 of both sides is welded
On the positive and negative terminals of single battery core, a piece of aerosol cellular board 1 is respectively arranged on the outside of it, and one is fastened on by peripheral frame
It rises, forms cylindrical power battery module 2.Usually the explosion-proof valve of cylindrical single battery core 1 is on positive terminal, aerosol
Cellular board 1 vertically faces single battery core explosion-proof valve emission direction.In the design of common cylindrical shaped power battery module 2, two
The position of the aerosol cellular board 1 of side is by installing conventional PC plate support fastening.The utility model uses aerosol honeycomb
Plate 1 replaces conventional PC plate, under the premise of space requirement is not increased, each battery module structure in power battery box body
Prevention and control structure is constructed in design, effectively single battery core is prevented to be spread due to thermal runaway explosion spray combustion to periphery single battery core.
If in the structure design applied to square power battery module 3, as shown in figure 5, square individual under normal circumstances
Battery core 2 31 be parallel side-by-side stand together, the explosionproof hole 32 of monomer battery core 2 31 is in upside.In rectangular power electric
One piece of aerosol cellular board 1 is arranged in the top of pond module 3, and by all around 33, two side plates 34 of upper bracket, upper plastics branch
Frame 35, lower plastic stent 36, side stand 37 etc. secure it within together.In the design of conventional square power battery module 3,
It the position of the aerosol cellular board 1 of top and is pushed down by a conventional PC plate.
When power battery pack works normally, either cylindrical single battery core 1 or square individual battery core 2 31,
The function of aerosol cellular board 1 is no different with conventional PC plate.Only when in battery modules some single battery core there is thermal runaway
During explosion, aerosol cellular board 1 plays the role of preventing thermal runaway extension, is controlled in the single battery core locally to go wrong
1 or single battery core 2 31 in.
The aerosol cellular board is placed in power battery module, each single battery core can be contacted and control, when certain
When thermal runaway occurs for one single battery core, the high temperature substance ejected is absorbed by the aerosol cellular board, more important
, the aerosol extinguishing agent entrained by the cellular board, which substantially can be quickly reversed, sprays to the single battery core, targetedly
Selective injection is carried out, to the extinguishing chemical of the single battery core injection sufficient dosage of local thermal runaway, not in entire Battery case
Inner homogeneous spray fire extinguishing agent, so as to ensure that extinguishing effect；The aerosol cellular board has good machinery and insulation fire prevention
Performance, can with the PC plate in alternate power battery module structure, without increasing any space requirement, can in Battery case root
The power battery module of multigroup different structure combination is arranged according to demand.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Any modification, equivalent replacement or improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (7)
1. a kind of aerosol cellular board for preventing the extension of power battery thermal runaway, which is characterized in that including ceramic honey comb layer (11),
Filled with extinguishing chemical in the ceramic honey comb layer (11), the both sides of ceramic honey comb layer (11) are symmetrically installed with viscous successively from the inside to the outside
Tie layer (12), flame-resistant insulation paper layer (13) and flame-resistant insulation film layer (14).
2. a kind of aerosol cellular board for preventing the extension of power battery thermal runaway according to claim 1, which is characterized in that
The thickness of the ceramic honey comb layer (11) is 5-20mm, porosity 75%-90%, aperture 1-4mm.
3. a kind of battery module structure, which is characterized in that claim 1-2 any one of them gas is equipped in the battery modules
Colloidal sol cellular board, the battery modules include cylindrical power battery module (2) and square power battery module (3).
A kind of 4. battery module structure according to claim 3, which is characterized in that the cylindrical power battery module
(2) including several single battery cores one (21), battery bracket (22), electrode connecting piece (23) and aerosol cellular board (1), the list
Body battery core one (21) is cylinder, and single battery core one (21) is fixed by two battery brackets (22), two battery brackets (22)
Outside is respectively equipped with electrode connecting piece (23), and an aerosol cellular board is respectively set in the outside of electrode connecting piece (23)
(1), it and by peripheral frame fastens.
5. a kind of battery module structure according to claim 4, which is characterized in that two electrode connecting pieces (23) are welded respectively
It is connected on the positive and negative terminals of single battery core one (21).
A kind of 6. battery module structure according to claim 5, which is characterized in that the anode of the single battery core one (21)
Explosion-proof valve is installed, the aerosol cellular board (1) vertically faces single battery core explosion-proof valve emission direction on column.
A kind of 7. battery module structure according to claim 3, which is characterized in that the square power battery module (3)
Including several single battery cores two (31) being square, upper bracket (33), side plate (34), upper plastic stent (35), lower plastic stent
(36), side stand (37) and aerosol cellular board (1)；
The upside of the single battery core two (31) is equipped with explosionproof hole (32), and the aerosol cellular board (1) lies in a horizontal plane in explosion-proof
The top in hole, aerosol cellular board (1) is by upper bracket (33), two side plates (34), upper plastic stent (35), lower plastic stent
(36) it is fastened with side stand (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721734425.0U CN207602663U (en) | 2017-12-13 | 2017-12-13 | Prevent the aerosol cellular board and battery module structure of power battery thermal runaway extension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721734425.0U CN207602663U (en) | 2017-12-13 | 2017-12-13 | Prevent the aerosol cellular board and battery module structure of power battery thermal runaway extension |
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| Publication Number | Publication Date |
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| CN207602663U true CN207602663U (en) | 2018-07-10 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887550A (en) * | 2017-12-13 | 2018-04-06 | 江苏福瑞士电池科技有限公司 | A kind of aerosol cellular board for preventing the extension of electrokinetic cell thermal runaway and its application |
| CN109301097A (en) * | 2018-09-13 | 2019-02-01 | 安徽统凌科技新能源有限公司 | A kind of fire retardant elastic automobile storage battery shell |
| CN112688010A (en) * | 2020-12-31 | 2021-04-20 | 上海工程技术大学 | Wearable battery pack |
| WO2021093581A1 (en) * | 2019-11-15 | 2021-05-20 | 宁德时代新能源科技股份有限公司 | Battery box, fabrication method therefor and apparatus containing battery box |
| CN112993439A (en) * | 2021-02-07 | 2021-06-18 | 中国矿业大学 | Battery heat insulation flame-retardant explosion-proof system |
| CN113785430A (en) * | 2019-05-02 | 2021-12-10 | 欧瑞康摩擦系统(德国)有限公司 | Heat shield |
| CN115295940A (en) * | 2022-07-22 | 2022-11-04 | 东风时代(武汉)电池系统有限公司 | Novel battery collision energy-absorbing structure and battery box |
| EP4044349A4 (en) * | 2020-01-13 | 2024-06-12 | Lg Energy Solution, Ltd. | Battery module comprising absorption member, battery rack comprising same, and power storage system |
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- 2017-12-13 CN CN201721734425.0U patent/CN207602663U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887550B (en) * | 2017-12-13 | 2023-10-13 | 江苏福瑞士电池科技有限公司 | Aerosol honeycomb plate for preventing thermal runaway expansion of power battery and application of aerosol honeycomb plate |
| CN107887550A (en) * | 2017-12-13 | 2018-04-06 | 江苏福瑞士电池科技有限公司 | A kind of aerosol cellular board for preventing the extension of electrokinetic cell thermal runaway and its application |
| CN109301097B (en) * | 2018-09-13 | 2021-06-22 | 安徽统凌科技新能源有限公司 | Flame-retardant elastic automobile storage battery shell |
| CN109301097A (en) * | 2018-09-13 | 2019-02-01 | 安徽统凌科技新能源有限公司 | A kind of fire retardant elastic automobile storage battery shell |
| CN113785430A (en) * | 2019-05-02 | 2021-12-10 | 欧瑞康摩擦系统(德国)有限公司 | Heat shield |
| WO2021093581A1 (en) * | 2019-11-15 | 2021-05-20 | 宁德时代新能源科技股份有限公司 | Battery box, fabrication method therefor and apparatus containing battery box |
| US11799153B2 (en) | 2019-11-15 | 2023-10-24 | Contemporary Amperex Technology Co., Limited | Battery casing, method for manufacturing the same, and device containing battery casing |
| EP4044349A4 (en) * | 2020-01-13 | 2024-06-12 | Lg Energy Solution, Ltd. | Battery module comprising absorption member, battery rack comprising same, and power storage system |
| CN112688010B (en) * | 2020-12-31 | 2022-10-28 | 上海工程技术大学 | Wearable battery pack |
| CN112688010A (en) * | 2020-12-31 | 2021-04-20 | 上海工程技术大学 | Wearable battery pack |
| CN112993439A (en) * | 2021-02-07 | 2021-06-18 | 中国矿业大学 | Battery heat insulation flame-retardant explosion-proof system |
| CN112993439B (en) * | 2021-02-07 | 2022-07-01 | 中国矿业大学 | Battery heat insulation flame-retardant explosion-proof system |
| CN115295940A (en) * | 2022-07-22 | 2022-11-04 | 东风时代(武汉)电池系统有限公司 | Novel battery collision energy-absorbing structure and battery box |
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