CN108598625A - The baffling device and application method of the extension of battery thermal runaway are prevented for battery system - Google Patents
The baffling device and application method of the extension of battery thermal runaway are prevented for battery system Download PDFInfo
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- CN108598625A CN108598625A CN201810535029.8A CN201810535029A CN108598625A CN 108598625 A CN108598625 A CN 108598625A CN 201810535029 A CN201810535029 A CN 201810535029A CN 108598625 A CN108598625 A CN 108598625A
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- heat
- battery
- thermal runaway
- pedestal
- conducting plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
A kind of application method for the baffling device for preventing battery thermal runaway from extending for battery system, several piece single battery is inserted on pedestal respectively between each pair of heat-conducting plate；When single battery when the temperature is excessively high, heat passes sequentially through each pair of heat-conducting plate, pedestal reaches in environment；When the temperature of the surroundings is low, the heating device in pedestal starts, and ensures that several single batteries work normally in 0 DEG C~60 DEG C temperature ranges, each single cell operation efficiency is made to give full play to；Thermal runaway occurs when there is a single battery in several single batteries, amount of heat is generated in a relatively short period of time, heat can not be reached in environment in time by heat-conducting plate and pedestal, baffler can prevent heat lateral transport, it is effectively isolated the heat of thermal runaway single battery generation, the single battery of thermal runaway is set to be confined in this single battery, the domino chain effect of thermal runaway occurs for initiation neighboring unit cell after preventing single battery from thermal runaway occurs, and time guarantee is provided for profession rescue and personnel escape.
Description
Technical field
The present invention relates to lithium ion battery thermal runaway Barrier Technologies, and in particular to one kind prevents battery hot for battery system
The baffling device and application method of extension out of control, for preventing battery cell thermal runaway in battery system from being extended to adjacent cell,
Battery system thermal runaway accident is limited in controlled range, time guarantee is provided for personnel escape and professional fire-fighting and rescue.
Background technology
In recent years, under the catalysis of industrial policy, China just greatly develops New-energy electric vehicle, and power resources are main
It is power battery, due to battery self-characteristic, there are still certain safety problems in use for battery.Since battery is in charge and discharge
Will produce a large amount of heat in the process, when these heats cannot shed in time, battery temperature can be caused to increase, when accumulation of heat extremely
It will appear single battery thermal runaway when to a certain degree.Thermal runaway once occurs for single battery, can be by heat if cannot control in time
It is transferred to adjacent cell, causes adjacent cell and thermal runaway occurs, the domino for ultimately forming the extension of battery system thermal runaway is chain
Effect makes entire battery system that thermal runaway fire or explosion accident occur.Therefore, the heat-sinking capability of battery system and prevention are improved
The extension of single battery thermal runaway is the most key technology in battery thermal management design.
Currently, associated mechanisms have carried out the largely research work about power battery heat management both at home and abroad, automobile factory uses
More mature thermal management technology be mainly air-cooled and liquid cooling technology.
Air-cooled is to allow air is horizontal to skim over battery surface, to take away heat, reaches heat dissipation purpose, dynamic with Japanese slight mixing
For power vehicle Prius and Insight, serial parallel draft type is respectively adopted and takes away power battery surface heat.It is to be situated between with air
The power battery thermal management system of matter, although it is at low cost, system is relatively easy, realize difficulty it is small, number of batteries it is more, put
Narrow space, big using power, use environment is severe（Climbing, brake etc.）And abuse（Overcharge, cross put, overheat, overcurrent etc.）
When, it is difficult the requirement for meeting power battery heat dissipation by the power battery thermal management system of medium of air.
Due to the limitation of air-cooled technology, start to apply by the power battery thermal management technology of the type of cooling of liquid medium
In battery system.Using the power battery thermal management system of liquid medium forced convection mode, pass through device or component（As pumped,
Liquid cooling runner, valve etc.）Liquid medium is transported to battery surface, using liquid medium flow heat transfer technology, is heated or cooled
Power battery achievees the purpose that power battery works in desirable temperature range, and liquid cooling technology is than air-cooled technology to the temperature of battery
Degree control is more uniform, but liquid-cooling system is complex, needs additional energy consumption, while easily leakage causes battery short circuit.
Barrier Technology is the key technology for preventing battery from thermal runaway extension occurs, in terms of Barrier Technology and barrier measures,
Domestic and international many mechanisms have all carried out the research of this respect.As the Tesla Motors Inc. in the U.S. increases heat conduction shell in outside batteries
Strengthen the heat transfer between battery and cooling medium, and between heat-insulating shield and metallic plate are positioned over different battery layers, passes through reduction
The heat transfer of different battery layers and heat radiation are come the propagation of heat when blocking thermal runaway.China Science ＆ Technology University king pine et al.
The composite plate based on heat conduction shell, thermal insulation board and phase-change material is had developed, the thermal insulation board in the structure can prevent cell heat
Lateral transport prevents battery thermal runaway from extending, and phase-change material can shed the heat of normal battery operation in time, ensures battery
Work is in the normal temperature range.
In Barrier Technology it is crucial that effectively solve battery heat dissipation and it is heat-insulated between contradiction, increase barrier between battery
After device, causes battery heat dissipation difficult, so that cell heat is largely gathered, battery temperature is caused to be unevenly distributed, easily battery is caused to be sent out
Heat is out of control；Baffling device is reduced, trap heat transmission is unable to, the purpose for inhibiting thermal runaway extension is not achieved.Therefore, there is an urgent need for prominent
Broken barrier and heat transfer fused controlling technology, the heat transfer of research and development efficient cryogenic and the effective barrier material of high temperature, scientific and reasonable design battery
System obstructs heat transfer structure and technique, the barrier being optimal and design of heat transfer scheme, realizes the technological incorporation of barrier and heat transfer,
Not only meet radiating requirements when normal battery operation, but also met the barrier requirement in the case of battery thermal runaway, and finally realize battery
The barrier heat transfer fused controlling of system thermal management, to improve the safety of battery system.
Invention content
The purpose of the invention is to inhibit battery system thermal runaway to extend, prevent battery system from fire or explosion occurs,
Provide a kind of baffling device and application method preventing the extension of battery thermal runaway for battery system.
Its structure is the composite construction of heat-conducting plate-baffler-heat-conducting plate and pedestal, and baffler is arranged between battery
Between two heat-conducting plates, the heat-sinking capability of battery and the uniformity of temperature are improved, while can effectively obstruct thermal runaway extension,
To improve the safety of battery pack.
The present invention to achieve the above object, the technical solution used for：One kind preventing battery thermal runaway for battery system
The baffling device of extension, it is characterised in that：Baffling device is made of pedestal, heat-conducting plate, baffler and heating device；
The pedestal is rectangle, and heat-conducting plate and baffler are specifically chosen according to cell shapes, is rectangle or circle, is set in pedestal
There is a heating device, heat-conducting plate interval described in several piece is fixed on the face of pedestal, and each pair of between the heat-conducting plate of pedestal both sides leads
One piece of baffler, corresponding surface and the baffler two sides tight fit of each pair of heat-conducting plate are respectively equipped in hot plate.
A kind of application method for the baffling device for preventing battery thermal runaway from extending for battery system, it is characterised in that：It will
Several piece single battery is inserted into respectively on pedestal between each pair of heat-conducting plate, the two sides of every piece of single battery respectively with each pair of heat conduction
The corresponding surface tight fit of plate；When single battery when the temperature is excessively high, heat reaches pedestal by each pair of heat-conducting plate, and ring is reached by pedestal
In border, prevent single battery from thermal runaway occurs；
When the temperature of the surroundings is low, the heating device in pedestal starts, and the temperature after heating is passed sequentially through pedestal by heating device
It is reached on single battery with heat-conducting plate, ensures that several single batteries work normally in 0 DEG C~60 DEG C temperature ranges, single battery
Between the temperature difference≤2 DEG C, realize the temperature uniformity of several single batteries, each single cell operation efficiency made to give full play to；
When there is a single battery that thermal runaway occurs in several single batteries, amount of heat, heat are generated in a relatively short period of time
It can not be reached in environment in time by heat-conducting plate and pedestal, baffler can prevent heat lateral transport, be effectively isolated thermal runaway list
The heat that body battery generates, makes the single battery of thermal runaway be confined in this single battery, prevents single battery from thermal runaway occurs
The domino chain effect of thermal runaway occurs for initiation neighboring unit cell afterwards, and time guarantor is provided for profession rescue and personnel escape
Barrier.
It is an advantage of the invention that：
Currently, electric vehicle battery system largely carries out cooling processing, battery cell using air-cooled or liquid cooling technology to battery
Between do not apply baffling device, once thermal runaway occurs for battery cell in battery system, by air-cooled or liquid cooling technology without
Method inhibits thermal runaway, heat that can be transferred to adjacent cell in time, causes adjacent cell that thermal runaway occurs, eventually develops into battery
The Domino effect of the multiple battery thermal runaway extensions of system.
The baffling device that the present invention researches and develops can not only ensure that battery can work in the normal temperature range, but also can prevent
Battery system thermal runaway extends, and battery thermal runaway is limited in limited range, it is ensured that personnel escape wins for profession rescue
Time ensures.
1, baffling device of the invention includes heat-conducting plate, baffler and pedestal, triple combination's application, synergistic effect, in base
Heating device is equipped in seat, pedestal can not only radiate but also can have been heated to battery, when high temperature, can both radiate to battery, by battery
The heat of generation is transferred to by heat-conducting plate and pedestal in environment, is substantially increased the heat-sinking capability of battery pack, is prevented battery from sending out
Heat is out of control.
Battery can be heated again when low temperature, pedestal ensures battery work in the normal temperature range by heating device,
It ensure that the temperature difference≤2 DEG C between single battery, effectively increase the uniformity of battery working efficiency and single battery temperature.
2, baffler of the invention can effectively prevent cell heat lateral transport, can be effectively isolated thermal runaway single battery
The heat of generation makes the thermal runaway of battery be confined in single battery, causes adjacent electricity after preventing battery cell from thermal runaway occurs
The domino chain effect of thermal runaway occurs for pond, it is therefore prevented that thermal runaway extension occurs for battery system.
3, the present invention has many advantages, such as that energy saving, simple in structure, heat-insulating efficiency is high, battery temperature uniformity is good, without additional
Energy consumption solves the contradiction between radiating in battery system and is heat-insulated, improves the safety of battery system, is electric vehicle
It promotes and applies and technical support is provided.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the usage state diagram of the present invention.
Specific implementation mode
As shown in Figure 1, the baffling device that battery thermal runaway extends is prevented for battery system, by pedestal 1, heat-conducting plate 2, resistance
Partition board 3 and heating device 4 are constituted.
Pedestal 1 is that rectangle, heat-conducting plate 2 and baffler 3 are specifically chosen according to cell shapes, is rectangle or circle, in pedestal 1
Interior that heating device 4 is housed, what six pieces of heat-conducting plates 2 were spaced is welded on the face of pedestal 1, every between 1 both sides heat-conducting plate 2 of pedestal
To being respectively equipped with one piece of baffler 3, corresponding surface and the 3 two sides tight fit of baffler of each pair of heat-conducting plate 2 in heat-conducting plate 2.
Pedestal 1 uses copper or aluminium material, and the thermal coefficient of pedestal 1 is between the W/m of 200W/m K~400 K.
Heat-conducting plate 2 uses copper or aluminium material, and the thermal coefficient of heat-conducting plate 2 is not less than 180W/m K, the thickness of heat-conducting plate 2
For 2mm~3mm.
Baffler 3 is using the meter Sized Materials of low thermal conductivity, and for thermal coefficient no more than 0.05W/m K, baffler 3 is thick
Degree is 1.5mm~2mm.
Heating device 4 is infrared heating or electromagnetic heating or resistive heating device.
As shown in Fig. 2, a kind of implementation method for the baffling device for preventing battery thermal runaway from extending for battery system, by three
Block single battery 5 is inserted into respectively on pedestal 1 between each pair of heat-conducting plate 2, and the two sides of every piece of single battery 5 are led with each pair of respectively
The corresponding surface tight fit of hot plate 2.When single battery 5 when the temperature is excessively high, heat reaches pedestal 1 by each pair of heat-conducting plate 2, by pedestal
1 reaches in environment, prevents single battery 5 from thermal runaway occurs.
When the temperature of the surroundings is low, the heating device 4 in pedestal 1 starts, and heating device 4 leads to the temperature after heating successively
It crosses pedestal 1 and heat-conducting plate 2 reaches on single battery 5, ensure the normal work in 0 DEG C~60 DEG C temperature ranges of several single batteries 5
Make, the temperature uniformity of several single batteries 5 is realized in the temperature difference≤2 DEG C between single battery 5, and each single battery 5 is made to work
Efficiency gives full play to.
When there is a single battery 5 that thermal runaway occurs in three single batteries 5, big calorimetric is generated in a relatively short period of time
Amount, heat can not be reached in environment in time by heat-conducting plate 2 and pedestal 1, and baffler 3 can prevent heat lateral transport, effectively every
From the heat that thermal runaway single battery 5 generates, the single battery 5 of thermal runaway is made to be confined in this single battery 5, prevents monomer electric
The domino chain effect that thermal runaway occurs for neighboring unit cell 5 is caused in pond 5 after thermal runaway occurs, and escapes for profession rescue and personnel
It is raw that time guarantee is provided.
One kind that above-described embodiment only is used for further illustrating the present invention prevents battery thermal runaway from extending for battery system
Baffling device, but the invention is not limited in embodiments, every to be made according to the technical essence of the invention to above example
Any simple modification, equivalent change and modification, each fall in the protection domain of technical solution of the present invention.
Claims (6)
1. a kind of preventing the baffling device that battery thermal runaway extends for battery system, it is characterised in that：Baffling device is by pedestal
（1）, heat-conducting plate（2）, baffler（3）And heating device（4）It constitutes；
The pedestal（1）For rectangle, heat-conducting plate（2）And baffler（3）Be specifically chosen according to cell shapes, be rectangle or circle,
In pedestal（1）It is interior to be equipped with heating device（4）, heat-conducting plate described in several piece（2）Interval is fixed on pedestal（1）Face on, in pedestal
（1）Both sides heat-conducting plate（2）Between each pair of heat-conducting plate（2）Inside it is respectively equipped with one piece of baffler（3）, each pair of heat-conducting plate（2）Pair
Answer face and baffler（3）Two sides tight fit.
2. according to claim 1 prevent the baffling device that battery thermal runaway extends for battery system, it is characterised in that：
The pedestal（1）Using copper or aluminium material, pedestal（1）Thermal coefficient between the W/m of 200W/m K~400 K.
3. according to claim 1 prevent the baffling device that battery thermal runaway extends for battery system, it is characterised in that：
The heat-conducting plate（2）Using copper or aluminium material, heat-conducting plate（2）Thermal coefficient be not less than 180W/m K, heat-conducting plate（2）Thickness
Degree is the mm of 2 mm~3.
4. according to claim 1 prevent the baffling device that battery thermal runaway extends for battery system, it is characterised in that：
The baffler（3）Using the meter Sized Materials of low thermal conductivity, thermal coefficient is not more than 0.05W/m K, baffler（3）It is thick
Degree is 1.5 mm~2mm.
5. according to claim 1 prevent the baffling device that battery thermal runaway extends for battery system, it is characterised in that：
The heating device（4）For infrared heating or electromagnetic heating or resistive heating device.
6. a kind of user using the baffling device described in claim 1 for preventing battery thermal runaway from extending for battery system
Method, it is characterised in that：By several piece single battery（5）It is inserted into pedestal respectively（1）Upper each pair of heat-conducting plate（2）Between, every piece of monomer
Battery（5）Two sides respectively with each pair of heat-conducting plate（2）Corresponding surface tight fit；Work as single battery（5）When the temperature is excessively high, heat
Pass through each pair of heat-conducting plate（2）Reach pedestal（1）, by pedestal（1）It reaches in environment, prevents single battery（5）Thermal runaway occurs；
When the temperature of the surroundings is low, pedestal（1）Interior heating device（4）Start, heating device（4）Successively by the temperature after heating
Pass through pedestal（1）And heat-conducting plate（2）Reach single battery（5）On, ensure several single batteries（5）In 0 DEG C~60 DEG C temperature models
Enclose interior normal work, single battery（5）Between the temperature difference≤2 DEG C, realize several single batteries（5）Temperature uniformity, make every
A single battery（5）Working efficiency gives full play to；
When several single batteries（5）In have a single battery（5）Thermal runaway occurs, generates big calorimetric in a relatively short period of time
Amount, heat pass through heat-conducting plate（2）And pedestal（1）It can not reach in environment in time, baffler（3）Heat lateral transport can be prevented,
It is effectively isolated thermal runaway single battery（5）The heat of generation makes the single battery of thermal runaway（5）It is confined to this single battery（5）
It is interior, prevent single battery（5）Cause neighboring unit cell after thermal runaway occurs（5）The domino chain effect of thermal runaway occurs,
Time guarantee is provided for profession rescue and personnel escape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535029.8A CN108598625A (en) | 2018-05-30 | 2018-05-30 | The baffling device and application method of the extension of battery thermal runaway are prevented for battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535029.8A CN108598625A (en) | 2018-05-30 | 2018-05-30 | The baffling device and application method of the extension of battery thermal runaway are prevented for battery system |
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| Publication Number | Publication Date |
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| CN108598625A true CN108598625A (en) | 2018-09-28 |
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| CN201810535029.8A Pending CN108598625A (en) | 2018-05-30 | 2018-05-30 | The baffling device and application method of the extension of battery thermal runaway are prevented for battery system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728374A (en) * | 2018-12-29 | 2019-05-07 | 华霆（合肥）动力技术有限公司 | Battery thermal management monitoring device and electric car |
| CN111239632A (en) * | 2020-02-10 | 2020-06-05 | 清华大学 | Battery thermal runaway trigger device and battery thermal runaway spreading test system |
| CN111388915A (en) * | 2020-03-20 | 2020-07-10 | 应急管理部天津消防研究所 | Method, device, equipment and storage medium for inhibiting lithium ion battery thermal runaway fire |
| JP2020145149A (en) * | 2019-03-08 | 2020-09-10 | 株式会社Ｇｓユアサ | Power storage device |
| CN113140854A (en) * | 2021-04-08 | 2021-07-20 | 大连理工大学 | Blade battery clamp with explosion-proof heat insulation plate for two-phase immersion type liquid cooling |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109728374A (en) * | 2018-12-29 | 2019-05-07 | 华霆（合肥）动力技术有限公司 | Battery thermal management monitoring device and electric car |
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| CN113140854A (en) * | 2021-04-08 | 2021-07-20 | 大连理工大学 | Blade battery clamp with explosion-proof heat insulation plate for two-phase immersion type liquid cooling |
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Application publication date: 20180928 |
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