CN209086412U - Battery thermal runaway experimental provision and its system - Google Patents
Battery thermal runaway experimental provision and its system Download PDFInfo
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- CN209086412U CN209086412U CN201821203215.3U CN201821203215U CN209086412U CN 209086412 U CN209086412 U CN 209086412U CN 201821203215 U CN201821203215 U CN 201821203215U CN 209086412 U CN209086412 U CN 209086412U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
This application involves a kind of battery thermal runaway experimental provisions, including cabinet, local heater and heat carrier.The local heater is set in the cabinet.The heat transfer device is set in the cabinet.The heat transfer device is bonded setting with the heater.At least one face of the heat transfer device is arcuate structure.The battery thermal runaway device provided by the present application is truer to the simulation of local thermal runaway actual scene, to improve the accuracy of the battery thermal runaway experimental result to be tested.
Description
Technical field
This application involves cell safety fields, more particularly to a kind of battery thermal runaway experimental provision and its system.
Background technique
With the development of science and technology, power battery has become common article in people's daily life and production.Power battery
It is easy to cause thermal runaway under certain inducements, so as to cause safety hazards.Therefore, the thermal runaway mistake of power battery is studied
Journey has become an important project.
Research of the people to battery thermal runaway process at present mainly passes through accelerating calorimeter (Accelerating Rate
Calorimetry, ARC), adiabatic reaction thermal energy analyzer (Vent Sizing Package 2, VSP2), differential scanning amount
The instruments such as hot instrument (Differential Scanning Calorimetry, DSC), cone calorimetry, simulation power battery heat are lost
Scene is controlled, and the characteristics such as heat production during thermal runaway to power battery, jet, burning are studied.
But these laboratory apparatus and experimental method differ bigger with actual scene, exist to power battery thermal runaway
Scenario simulation accuracy difference problem.
Utility model content
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of battery thermal runaway experimental provision and its system.
A kind of battery thermal runaway experimental provision, comprising:
Cabinet；
Local heater is set in the cabinet；
Heat transfer device is set in the cabinet, and the heat transfer device is bonded setting with the heater, and the heat transfer device is at least
Having a face is arcuate structure.
The battery thermal runaway experimental provision in one of the embodiments, further include:
Guide rail is set in the cabinet；
Connecting rod is set in the cabinet, and the connecting rod is connected between the guide rail and the heat carrier, and institute
Stating connecting rod can slide along the guide rail.
The battery thermal runaway experimental provision further includes equiflux heater in one of the embodiments, is set to described
In cabinet, the equiflux heater is oppositely arranged with the local heater interval.
The battery thermal runaway experimental provision in one of the embodiments, further include:
Air circulation device is set in the cabinet, for changing the intracorporal air flow direction of case, so that in the cabinet
Even heat.
In one of the embodiments, the equiflux heater be planar structure, the air circulation device and it is described
Even heater interval is oppositely arranged, the equiflux heater be set to the air circulation device and the area heating installation it
Between.
The battery thermal runaway experimental provision further includes pressure-regulating device in one of the embodiments, is set to institute
Cabinet is stated, for adjusting the box house pressure.
The pressure-regulating device includes: in one of the embodiments,
First gas passage is connected to the cabinet, the circulation for gas；
Air pump is connect by the first gas passage with the cabinet, for being filled with gas to the cabinet or from institute
State gas bleeding in cabinet.
The battery thermal runaway experimental provision in one of the embodiments, further include:
Second gas channel is connected to the cabinet, the circulation for gas.
The second gas channel includes: in one of the embodiments,
Valve is set to the second gas channel, for controlling the opening and closing in the second gas channel.
The battery thermal runaway experimental provision further includes safety valve in one of the embodiments, is set to the cabinet,
For pressure release.
The battery thermal runaway experimental provision provided by the embodiments of the present application includes cabinet, local heater and heat carrier.
The local heater is set in the cabinet.The heat transfer device is set in the cabinet.The heat transfer device adds with described
Hot device fitting setting.At least one face of the heat transfer device is arcuate structure.By the point of contact in arcuate structure face may be implemented with
The point contact of the battery to be tested, so that contact point becomes smaller, so that thermal runaway trigger point becomes smaller, therefore, to localized heat
The simulation of actual scene out of control is truer, to improve the accuracy of the battery thermal runaway experimental result to be tested.
A kind of battery thermal runaway experimental system, comprising:
Battery thermal runaway experimental provision described in any one as above；
Measuring device is connect with the battery thermal runaway experimental provision, is used for measurement data；
Data analysis set-up is connect with the measuring device, for obtaining the data of the measuring device measurement, and is carried out
Analysis processing.
The battery thermal runaway experimental system further includes display device in one of the embodiments, with the data
Analytical equipment connection, is used for display data analysis processing result.
The battery thermal runaway experimental system provided by the embodiments of the present application includes the battery thermal runaway experimental provision, institute
State measuring device and the data analysis set-up.The battery thermal runaway experimental provision can be improved real to battery local thermal runaway
The accuracy of border scenario simulation, to improve the accuracy of experiment.The battery thermal runaway provided by the embodiments of the present application is real
The experimental result of check system has larger directive significance to cell safety design.
Detailed description of the invention
Fig. 1 is the battery thermal runaway experimental apparatus for testing schematic diagram that the application one embodiment provides；
Fig. 2 is the battery thermal runaway experimental apparatus for testing cross-sectional view that the application one embodiment provides；
Fig. 3 is the battery thermal runaway experimental apparatus for testing cross-sectional view that the application one embodiment provides；
Fig. 4 is the battery thermal runaway experimental apparatus for testing top view that the application one embodiment provides；
Fig. 5 is the battery thermal runaway experimental apparatus for testing cross-sectional view that the application one embodiment provides；
Fig. 6 is the battery thermal runaway experimental apparatus for testing partial sectional view that the application one embodiment provides；
The battery thermal runaway experimental apparatus for testing schematic diagram that Fig. 7 the application one embodiment provides；
Fig. 8 is the battery thermal runaway testing experimental system structural schematic diagram that the application one embodiment provides.
Description of symbols
Battery thermal runaway experimental system 1
Battery thermal runaway experimental provision 10
Cabinet 100
Hermatic door 110
Observation window 111
Heating device 200
Equiflux heater 210
Air circulation device 220
First gas passage 300
Air pump 400
Second gas channel 500
Valve 510
Safety valve 600
Area heating installation 700
Local heater 710
Heat carrier 720
Guide rail 730
Connecting rod 740
Pressure-regulating device 800
Measuring device 20
First temperature testing device 21
Second temperature test device 22
First pressure test device 23
Second pressure test device 24
Data analysis set-up 30
Display device 40
Battery 50 to be tested
Battery bracket 51
Hold disk 52
Shield 53
Image collecting device 60
Specific embodiment
In order to which the objects, technical solutions and advantages of the application are more clearly understood, by the following examples, and combine attached
Figure, is further elaborated the solar chip battery detection equipment of the application.It should be appreciated that tool described herein
Body embodiment only to explain the application, is not used to limit the application.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).In the description of the present application, it is to be understood that term " on ", "lower", "front", "rear", " left side ",
The orientation of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise " or position are closed
System indicates to be based on the orientation or positional relationship shown in the drawings, being merely for convenience of description the application and simplifying description
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the application.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Referring to Figure 1 and Fig. 2, the application one embodiment provide a kind of battery thermal runaway experimental provision 10 comprising case
Body 100, heating device 200 and pressure-regulating device 800.The pressure-regulating device 800 is set to the cabinet 100, is used for
Adjust 100 internal pressure of cabinet.
The battery thermal runaway experimental provision 10 can be applied to that the thermal runaway experiment that the battery of thermal runaway carries out can occur.
The battery is secondary cell.The battery can be lithium battery.It is appreciated that the battery thermal runaway experimental provision 10 is answered
With the test of battery thermal runaway is not limited to, can also be applied to other has the scene of same use demand.
The cabinet 100 is for placing battery 50 to be tested.Shape, size, material and the specification of the cabinet 100, can
To be selected according to actual needs.The cabinet 100 can be seal case.The cabinet 100 may include hermatic door
110.The hermatic door 110 is set to 100 side of cabinet.The hermatic door 110 can use liner high temperature resistant silicon rubber mat,
To realize the sealing of the cabinet 100.The hermatic door 110 can also include observation window 111.The observation window 111 can be
Light-transmitting materials are made, the situation for observing in the cabinet 100.For example, the material of the observation window 111 can be quartzy glass
Glass.In the cabinet 100 pad pasting can be set in side in the observation window 111, convenient for carrying out after test to the observation window 111
Cleaning.When the observation window 111 is made for light-transmitting materials, image collector is also provided with outside the observation window 111
Set 60.Described image acquisition device 60 is used to record the experimental phenomena inside cabinet 100 described in experimentation.Described image is adopted
Acquisition means 60 can be camera or video camera.
In one embodiment, the cabinet 100 is square.The cabinet 100 is high temperature resistant, high pressure resistant material system
At.The side of the cabinet 100 is provided with hermatic door 110.Observation window 111 is arranged in the hermatic door 110.The observation window 111
Outside be provided with video camera.The battery to be tested 50 is placed in inside the cabinet 100.For the ease of experiment, it is described to
Test battery 50 can pass through battery bracket 51 and 100 certain distance of cabinet.The battery to be tested 50 can be contained in
It holds in disk 52.The disk 52 that holds is set on the battery bracket 51.Mesuring battary 50 described in experiment sprays in order to prevent
Hair or 50 thermal runaway after-explosion of the mesuring battary inside the cabinet 100 to damaging, the top for holding disk 52
Shield 53 can also be set.The shield 53 can be wire mesh.
The heating device 200 is set to the inside of the cabinet 100.The heating device 200 is for heating, to mention
The temperature of the high battery 50 to be tested, and then study the thermal runaway behavior of the battery 50 to be tested.The heating device 200
It can be device for homogenous heating, be also possible to area heating installation.The heating device 200 can be electric heating wire, can be
Quartz heating-pipe is also possible to electrically heated rod, can also be laser heater etc..As needed, the heating device 200 can be with
It is set to any position in the cabinet 100.The heating device 200 can be set in the cabinet 100 by bracket
Portion can also be hung on inside the cabinet 100 by connecting rod etc..The connection of the heating device 200 and the cabinet 100
It may be a fixed connection, may be a detachable connection.The specific structure of the heating device 200, model, placement location and
It can be selected according to actual experiment demand with the connection type of the cabinet 100 etc., the application is not specifically limited.
The pressure-regulating device 800 is that can increase by 100 internal pressure of cabinet or reduce inside the cabinet 100
The device of pressure.The pressure-regulating device 800 can there are many selections.The pressure-regulating device 800 can change described
Pressure inside cabinet 100, so as to adjust the pressure inside the cabinet 100.Pass through the pressure apparatus 800, the cabinet
100 can simulate under Different Altitude, the thermal runaway behavioural characteristic of the mesuring battary 50.Compared with traditional technology, the application is real
The battery thermal runaway experimental provision 10 for applying example offer increases the simulation of pressure change, and this improves to described to be measured
The accuracy of the thermal runaway actual scene simulation of battery 50, to improve the accuracy of experiment.
In one embodiment, the pressure-regulating device 800 includes first gas passage 300 and air pump 400.Described
One gas passage 300 is connected to the cabinet 100, the circulation for gas.The air pump 400 passes through the first gas passage
300 connect with the cabinet 100.The air pump 400 is for being filled with gas to the cabinet 100 or taking out from the cabinet 100
Gas out.
The first gas passage 300 can be pipeline.Material, model of the pipeline etc. with no restrictions, can bases
Actual demand selection.Specifically, 100 side of cabinet can offer mounting hole, for installing the first gas passage
300.The size of the mounting hole and the size of the first gas passage 300 match, to guarantee the first gas passage
300 are connected to the cabinet 100.One end of the first gas passage 300 is connected to the cabinet 100, the first gas
The other end in channel 300 is connect with the air pump 400.The first gas passage 300 is also provided with switch or valve, uses
In the opening and closing for controlling the first gas passage 300.The air pump 400 is used for the gas injection into the cabinet 100
Or the gas bleeding out of described cabinet 100.Concrete specification, model of the air pump 400 etc. without limitation, as long as institute can be passed through
It states first gas passage 300 to connect with the cabinet 100, and realizes and be filled with gas to the cabinet 100 or from the cabinet 100
Extract air out.
The process and original of thermal runaway experiment are carried out to the mesuring battary 50 using the battery thermal runaway experimental provision 10
It manages as follows:
After the battery 50 to be tested and the heating device 200 are placed in the cabinet 100, the sealing is closed
Door 110.It is filled with air or extraction air, into the cabinet 100 by the air pump 400 to change in the cabinet 100
Pressure.It is heated by the heating device 200, until causing 50 thermal runaway of battery to be tested.Study the electricity to be tested
Thermal runaway behavioural characteristic of the pond 50 under gas with various pressure.Thermal runaway behavioural characteristic under the gas with various pressure can be used
In characterization actual conditions, under Different Altitude, the thermal runaway feature of the mesuring battary 50.
In the present embodiment, the battery thermal runaway experimental provision 10 includes the cabinet 100, the heating device 200, institute
State first gas passage 300 and the air pump 400.The first gas passage 300 is connected to the cabinet 100, is used for gas
Circulation.The air pump 400 is connect by the first gas passage 300 with the cabinet 100, is used for the cabinet 100
It is filled with gas or the gas bleeding from the cabinet 100.Cooperated by the first gas passage 300 and the air pump 400
At the pressure change in the cabinet 100.The battery 50 to be tested is heated by the heating device 200, thus
The thermal runaway behavioural characteristic of simulated battery battery 50 to be tested under Different Altitude, different pressures.Compared with traditional technology,
The battery thermal runaway experimental provision 10 provided by the embodiments of the present application increases the simulation of pressure change, and this improves right
The accuracy of 50 thermal runaway actual scene of the mesuring battary simulation, to further improve the accuracy of experiment.Utilize this
The experimental result that the battery thermal runaway experimental provision 10 that application provides is tested has cell safety design biggish
Directive significance.
In one embodiment, the battery thermal runaway experimental provision 10 can also include second gas channel 500.It is described
Second gas channel 500 is connected to the cabinet 100, the circulation for gas.The second gas channel 500 can be pipe
Road.Material, model of the pipeline etc. with no restrictions, can select according to actual needs.Specifically, 100 side of cabinet
Mounting hole can be offered.The mounting hole is for installing the second gas channel 500.The size of the mounting hole with it is described
The size in second gas channel 500 matches, to guarantee that the second gas channel 500 is connected to the cabinet 100.Described
Two gas passages 500 can be used for outside air and flow into air into the cabinet 100, can be used in the cabinet 100
Air outflow.
When the hermatic door 110 seals, the second gas channel 500 kept unimpeded, by the air pump 400 and described
First gas passage 300 injects air into the cabinet 100.Air in the cabinet 100 is logical by the second gas
It flows out in road 500.Air in the cabinet 100 generates convection current.By adjusting the power of the air pump 400, change the air pump
400 then change to the speed of the cabinet 100 injection air so as to change the cross-ventilation speed in the cabinet 100
Become the air speed ratio in the cabinet 100.The battery thermal runaway experimental provision 10 provided in this embodiment can simulate different skies
The thermal runaway behavioural characteristic of the battery 50 to be tested under speed ratio accurately simulates the battery to be tested 50 in practical application
Thermal runaway behavior under the scenes such as middle different wind speed or speed.The battery thermal runaway experimental provision 10 provided in this embodiment
The accuracy to the 50 thermal runaway scenario simulation of battery to be tested is improved, to improve the accurate of thermal runaway experimental result
Property.
In one embodiment, the second gas channel 500 can also include valve 510.The valve 510 is set to
The second gas channel 500, for controlling the opening and closing in the second gas channel 500.The valve 510 can be set
It is placed in the end in the second gas channel 500, also can be set in the intermediate position in the second gas channel 500.It is described
Valve 510 is used to control the opening and closing in the second gas channel 500.As needed, the valve 510 also can choose
The valve of 500 gas flow of second gas channel can be controlled.Specifically, when needing to adjust air speed in the cabinet 100
Than when, open the valve 510, and air is injected into the cabinet 100 by the air pump 400.Described in needing to adjust
When pressure in cabinet 100, the valve 510 is closed, passes through the air pump 400 and the first gas passage 300 adjusts institute
State the pressure in cabinet 100.Unlatching and the pass in the second gas channel 500 can be flexibly realized by the valve 510
It closes, so as to realize the multi-functional of the battery thermal runaway experimental provision 10.
In one embodiment, the pond thermal runaway experimental provision 10 can also include safety valve 600.The safety valve
600 are set to the cabinet 100, are used for pressure release.The safety valve 600 can be set in the top of the cabinet 100, can also be with
It is set to any one side of the cabinet 100.The safety valve 600 can preset certain threshold value, when the cabinet 100
Interior pressure is more than preset threshold, and the safety valve 600 is opened, and starts pressure release.Specific structure, the type of the safety valve 600
Number and the connection type etc. with the cabinet 100, can select according to actual needs.The safety valve 600 can prevent reality
During testing, because 50 thermal runaway of mesuring battary eruption, burning etc. cause to occur due to 100 internal pressure of cabinet is excessive it is quick-fried
It is fried to wait dangerous situations.The safety valve 600 improves the safety of the battery thermal runaway experimental provision 10.
The heating device 200 can be device for homogenous heating.The device for homogenous heating is used for the electricity to be tested
Pond 50 is evenly heated, to induce the 50 full battery thermal runaway of battery to be tested.The device for homogenous heating is for simulating electricity
In the use process of pond, the thermal runaway scene of the comprehensive samming induction of battery caused by excessively high etc. reasons of environment temperature.
When the heating device 200 is device for homogenous heating, the structure of the heating device 200 can be a variety of.Please
Referring to Fig. 3 and Fig. 4, in one embodiment, the heating device 200 may include equiflux heater 210 and air circulation dress
Set 220.The equiflux heater 210 is set in the cabinet 100, for generating heat.The air circulation device 220 is set
It is placed in the cabinet 100.The air circulation device 220 is oppositely arranged with the equiflux heater 210 interval, for changing
Air flow direction in the cabinet 100, so that even heat in the cabinet 100.The equiflux heater 210 can add for electricity
Hot device.The equiflux heater 210 can be using electric heating wire or quartz heating-pipe etc..The equiflux heater 210 can lead to
Power is overregulated to realize the adjusting of the rate of heat addition.The equiflux heater 210 is spaced opposite set with the battery 50 to be tested
It sets.That is, the equiflux heater 210 does not contact directly with the battery 50 to be tested.The equiflux heater 210 produces
Heat amount simultaneously increases the air themperature in the cabinet 100, so that being placed in described to be tested in the cabinet 100
50 temperature of battery increases.
Upper and lower, left and right in the equiflux heater 210, front or rear can be set in the air circulation device 220, and
It is spaced and is arranged with the equiflux heater 210.The air circulation device 220 is for changing the air stream in the cabinet 100
To so that the even heat in the cabinet 100.The air circulation device 220 can be circulating fan etc..
In the present embodiment, the battery thermal runaway experimental provision 10 includes that the equiflux heater 210 and the air follow
Loop device 220.The air circulation device 220 is oppositely arranged with the equiflux heater 210 interval.It is evenly heated by described
Device 210 and the air circulation device 220 cooperate, so that the temperature in the cabinet 100 uniformly increases.It is placed in the cabinet
The battery 50 to be tested in 100 induces thermal runaway since ambient temperature is excessively high.The application is that embodiment provides
The battery thermal runaway experimental provision 10 accurately simulate the comprehensive samming of the battery to be tested 50 induce thermal runaway scene,
So as to improve the accuracy and reliability of experimental result.
In one embodiment, the equiflux heater 210 is planar structure.The equiflux heater 210 can be to add
The heater of the planar structures such as backing, heating plate.The equiflux heater 210 can be fixed on described by devices such as connecting rods
In cabinet 100.The equiflux heater 210 can hang the inner tip with the cabinet 100, and with the battery to be tested
50 are arranged in parallel.The air circulation device 220 can hang the top for being set to the equiflux heater 210.That is,
The equiflux heater 210 is set between the battery to be tested 50 and the air circulation device 220.Planar it is described
Even heater 210 is capable of increasing heating and heat dissipation area, to improve heating efficiency, and then improves the battery thermal runaway experiment
The working efficiency of device 10.
Fig. 5 is referred to, in one embodiment, the battery thermal runaway experimental provision 10 further includes area heating installation
700.The area heating installation 700 is oppositely arranged with the equiflux heater 210 interval.The equiflux heater 210 is arranged
Between the air circulation device 220 and the area heating installation 700.
The area heating installation 700 and 50 localized contact of battery to be tested, for simulating battery in practical application
Hot-spot induces thermal runaway, and spreads to other regions and then induce the scene of comprehensive thermal runaway.The area heating installation
700 can be heating rod, or laser heater etc..The area heating installation 700 can pass through connecting rod or support
The forms such as frame are connected to the cabinet 100.In thermal runaway experimentation, the area heating installation 700 with it is described to be tested
The contact point of battery 50 is smaller, and induce local thermal runaway plays hot spot with regard to smaller, just to the simulation of local thermal runaway actual scene
It is truer.Meanwhile the volume of the area heating installation 700 is smaller, and it is fewer to the heating of surrounding air, to local thermal runaway
The simulation of scene is truer.It is described that thermal runaway scene is induced by the 700 simulated battery hot-spot of area heating installation,
The battery thermal runaway experimental provision 10 is further improved to the accuracy of the 50 thermal runaway scenario simulation of battery to be tested,
To improve the accuracy of the 50 thermal runaway experimental result of battery to be tested.
Fig. 6 is referred to, in one embodiment, the area heating installation 700 includes local heater 710 and heat carrier
720.The heat carrier 720 is bonded setting with the local heater 710.The heat carrier 720 and the equiflux heater 210
Interval is oppositely arranged.The local heater 710 is for generating heat.The local heater 710 can be heater strip etc..Institute
Stating heat carrier 720 can be spherical structure, or cube structure can also be other irregular shape structures.It is described
Heat carrier 720 can be wrapped in the outside of the local heater 710, and be bonded with the local heater 710.The heating
The volume of device 710 and the heat carrier 720 is the smaller the better.The heat carrier 720 is contacted with the battery 50 to be tested, and being used for will
The heat that the heater 710 generates is conducted to the battery 50 to be tested.By the local heater 710 and described thermally conductive
Body 720 realizes the local heating to the battery 50 to be tested, to simulate in practical application, battery hot-spot induces heat and loses
Scene is controlled, further improves the battery thermal runaway experimental provision 10 to the 50 thermal runaway scenario simulation of battery to be tested
Accuracy.
In one embodiment, described at least one face of heat carrier 720 is arcuate structure.The face of the arcuate structure can
Think the face far from the equiflux heater 210.The face of the arcuate structure is contacted with the battery to be tested.The heat carrier
720 other faces can be arcwall face, or plane.In order to process with it is easy to connect, the heat carrier 720 can be five
The stereochemical structure of the face of a plane and arcuate structure composition, the point of contact in the face of the arcuate structure and the battery to be tested
50 contacts, to realize the point contact of the heat carrier 720 and the battery 50 to be tested.It is real by the point of contact in arcuate structure face
Now, so that thermal runaway trigger point becomes smaller, therefore, play a game with the point contact of the battery to be tested so that contact point becomes smaller
The simulation of portion's thermal runaway actual scene is truer.Meanwhile the local heater 710 can be parallel to the battery to be tested 50
Setting, to reduce the influence to surrounding air, it is real to improve the battery thermal runaway to reduce the volume of the heat carrier 720
Authenticity of the experiment device 10 to local thermal runaway scenario simulation.
Fig. 7 is referred to, in one embodiment, the area heating installation 700 further include: guide rail 730 and connecting rod
740.The guide rail 730 and the connecting rod 740 are all set in the cabinet 100.The connecting rod 740 is connected to described lead
Between rail 730 and the heat carrier 720.And the connecting rod 740 can be slided along the guide rail 730.
The guide rail 730 can be set up in the 100 inside two side walls of cabinet, also can be set in the cabinet 100
Top.The connecting rod 740 can be used for supporting the heat carrier 720 and the local heater 710.The connecting rod 740 can
Think rod-shaped.One end of the connecting rod 740 is connect with the heat carrier 720.The other end of the connecting rod 740 is led with described
Rail 730 connects.The connecting rod 740 can be slided along the guide rail 730, to change the heat carrier 720 and the part
The position of heater 710, and then change the thermal runaway trigger point of local thermal runaway experiment.Pass through the guide rail 730 and the company
Extension bar 740 realizes the removable of the area heating installation 700, so that the battery thermal runaway experimental provision 10 uses
It is more convenient.
The application one embodiment provides a kind of battery thermal runaway experimental system 1, including as above described in any item batteries
Thermal runaway experimental provision 10, measuring device 20 and data analysis set-up 30.The measuring device 20 and the battery thermal runaway are real
Experiment device 10 connects, and is used for measurement data.The data analysis set-up 30 is connect with the measuring device 20, described for obtaining
The data that measuring device 20 measures, and be analyzed and processed.
The measuring device 20 is related to jet amount etc. for measuring temperature during battery thermal runaway, pressure, heat liberation rate, heat release rate
Data.The measuring device 20 may include temperature measuring device, device for pressure measurement etc..The quantity of the measuring device 20 and
Setting position etc. can select according to demand.
The data analysis set-up 30 can be computer processor, or programmable logic processor etc..It is described
The data that measurement obtains are transmitted to the data analysis set-up 30 by measuring device 20.The data analysis set-up 30 is to the number
According to being calculated, analyzed and handled, the result needed.
In the present embodiment, the battery thermal runaway experimental system 1 includes the battery thermal runaway experimental provision 10, the survey
Measure device 20 and the data analysis set-up 30.The battery thermal runaway experimental provision 10 can be improved practical to battery thermal runaway
The accuracy of scenario simulation, to improve the accuracy of experiment.The battery thermal runaway experiment provided by the embodiments of the present application
The experimental result of system 1 has larger directive significance to cell safety design.
In one embodiment, the battery thermal runaway experimental system 1 further includes display device 40.The display device 40
It is connect with the data analysis set-up 30, is used for display data analysis processing result.The display device 40 can be used for showing
Show 60 acquired image information of described image acquisition device.By the display device 40, the battery heat can be improved and lose
Control the intelligence of 1 human-computer interaction of experimental system.
In one embodiment, the measuring device 20 includes the first temperature measuring device 21, second temperature measuring device
22, first pressure measuring device 23 and second device for pressure measurement 24.First temperature measuring device 21 is set to described
One gas passage 300, the temperature gone out for measuring the first gas passage 300.The second temperature measuring device 22 is arranged
In the second gas channel 500, for measuring the temperature at the second gas channel 500.The first pressure measurement dress
It sets 23 and is set to the first gas passage 300, for measuring the pressure at the first gas passage 300.Second pressure
Force measuring device 24 is set to the first gas passage 300, for measuring the pressure at the first gas passage (300).
When the air pump 400 injects air into the cabinet 100 by the first gas passage 300.Described second
Gas passage 500 is opened.The first gas passage 300 and the second gas channel 500 form cross-ventilation.Described first
Temperature measuring device 21 and the first pressure measuring device 23 measure the gas at the first gas passage 300 temperature and
Pressure.The second temperature measuring device 22 and second device for pressure measurement 24 measure gas at the second gas channel 500
Temperature and pressure.The data analysis set-up 30 according to the temperature and pressure of inflow gas at the first gas passage 300,
And at second gas channel 500 eluting gas temperature and pressure, calculate, analysis go out 50 thermal runaway of battery to be tested
Heat liberation rate, heat release rate in the process.
The battery thermal runaway experimental system 1 provided in this embodiment passes through first temperature measuring device 21, described
Second temperature measuring device 22, the first pressure measuring device 23 and the second device for pressure measurement 24 flow into gas logical
The temperature and pressure of road and gas flow pass measures respectively, and then calculates the 50 thermal runaway process of battery to be tested
In heat liberation rate, heat release rate.It is provided by the embodiments of the present application described compared with the equipment in traditional technology consumes method calculating heat liberation rate, heat release rate by oxygen
Battery thermal runaway experimental system 1 is accurately calculated parameter during battery thermal runaway.
The application one embodiment provides a kind of battery thermal runaway experimental method, comprising:
S10 measures the temperature at the first gas passage 300 by first temperature measuring device 21, obtains
One temperature；
S20 measures the temperature at the second gas channel 500 by the second temperature measuring device 22, obtains
Two temperature；
S30 measures the pressure at the first gas passage 300 by first pressure measuring device 23, obtains the first pressure
Power；
S40 measures the pressure at the first gas passage 300 by second device for pressure measurement 24, obtains the second pressure
Power；
S50, the data analysis set-up 30 is according to first temperature, the second temperature, the first pressure and institute
State the heat liberation rate, heat release rate that second pressure calculates battery thermal runaway process.
The air pump 400 injects air, second gas into the cabinet 100 by the first gas passage 300
Air is discharged in body channel 500.Meanwhile battery 50 to be tested is heated by the heating device 200, until the electricity to be tested
Thermal runaway occurs for pond 50.Pass through first temperature measuring device 21, the second temperature measuring device 22, the first pressure
Measuring device 23 and the second device for pressure measurement 24 are respectively at the 300 gas inflow of first gas passage and described
Temperature and pressure at two gas passages, 500 gas outflow measures, and obtains first temperature, the second temperature, institute
State first pressure and the second pressure.
The heat release power during 50 thermal runaway of battery to be tested is calculated according to following formula:
Wherein, PbatteryIt is the heat release power during 50 thermal runaway of battery to be tested.cp-airIt is the equipressure of air
Specific heat capacity, unit J/kg.K.ρair_inIt is the density of gas at the first gas passage 300, unit kg/m3。ρair_out
It is the density of gas at the second gas channel 500, unit kg/m3。It is the stream at the first gas passage 300
Amount, unit m3/s。It is the flow in the second gas channel 500, unit m3/s。ToutIt is the second temperature, unit K.
TinIt is first temperature, unit K.PheaterIt is the power of the heating device 200.PreleasedIt is the cabinet 100
Heat radiation power, unit J/s.VinIt is the volume for the gas that the first gas passage 300 flows into.VoutIt is the second gas
The volume for the gas that channel 500 flows into.dinIt is the sectional area of the first gas passage 300.doutIt is the second gas channel
500 sectional area.T is to inject air by the first gas passage 300, flows out sky by the second gas channel 500
The time of gas.
Heat release power during 50 thermal runaway of battery to be tested is integrated, the electricity to be tested can be obtained
Heat liberation rate, heat release rate during 50 thermal runaway of pond.
The battery thermal runaway experimental method provided by the embodiments of the present application, by first temperature measuring device 21,
The second temperature measuring device 22, the first pressure measuring device 23 and the second device for pressure measurement 24 are respectively to institute
The temperature and pressure at 300 gas inflow of first gas passage and at 500 gas outflow of the second gas channel is stated to be surveyed
Amount, obtains first temperature, the second temperature, the first pressure and the second pressure.According to first temperature,
The battery to be tested 50 is calculated during thermal runaway in the second temperature, the first pressure and the second pressure
Heat liberation rate, heat release rate.Compared with consuming method in traditional technology by oxygen and calculating heat liberation rate, heat release rate, the battery heat provided by the embodiments of the present application is lost
Control experimental method is accurately calculated heat liberation rate, heat release rate during battery thermal runaway.
It should be noted that the battery thermal runaway experimental provision 10, system 1 and method provided by the present application are in addition to can be with
It tests except the heat liberation rate, heat release rate during 50 thermal runaway of battery to be tested, can also test described to be tested during thermal runaway
The other parameters such as temperature, pressure and the jet amount of battery 50.Specifically, selection use can be carried out according to actual needs.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (12)
1. a kind of battery thermal runaway experimental provision (10) characterized by comprising
Cabinet (100)；
Local heater (710) is set in the cabinet (100)；
Heat carrier (720) is set in the cabinet (100), and the heat carrier (720) and the local heater (710) are pasted
Setting is closed, described at least one face of heat carrier (720) is arcuate structure.
2. battery thermal runaway experimental provision (10) according to claim 1, which is characterized in that further include:
Guide rail (730) is set in the cabinet (100)；
Connecting rod (740) is set in the cabinet (100), and the connecting rod (740) is connected to the guide rail (730) and institute
It states between heat carrier (720), and the connecting rod (740) can be slided along the guide rail (730).
3. battery thermal runaway experimental provision (10) according to claim 1, which is characterized in that further include equiflux heater
(210), it is set in the cabinet (100), the equiflux heater (210) and the local heater (710) interval are opposite
Setting.
4. battery thermal runaway experimental provision (10) according to claim 3, which is characterized in that further include:
Air circulation device (220) is set in the cabinet (100), for changing the air flow direction in cabinet (100), is made
Obtain the interior even heat of the cabinet (100).
5. battery thermal runaway experimental provision (10) according to claim 4, which is characterized in that the equiflux heater
It (210) is planar structure, the air circulation device (220) is oppositely arranged with the equiflux heater (210) interval, described equal
Even heater (210) is set between the air circulation device (220) and the local heater (710).
6. battery thermal runaway experimental provision (10) according to claim 1, which is characterized in that further include pressure-regulating device
(800), the cabinet (100) are set to, for adjusting the cabinet (100) internal pressure.
7. battery thermal runaway experimental provision (10) according to claim 6, which is characterized in that the pressure-regulating device
(800) include:
First gas passage (300) is connected to, the circulation for gas with the cabinet (100)；
Air pump (400) is connect by the first gas passage (300) with the cabinet (100), is used for the cabinet
(100) gas or the gas bleeding from the cabinet (100) are filled with.
8. battery thermal runaway experimental provision (10) according to claim 7, which is characterized in that further include:
Second gas channel (500) is connected to, the circulation for gas with the cabinet (100).
9. battery thermal runaway experimental provision (10) according to claim 8, which is characterized in that the second gas channel
(500) include:
Valve (510) is set to the second gas channel (500), for controlling the unlatching of the second gas channel (500)
And closing.
10. battery thermal runaway experimental provision (10) according to claim 1, which is characterized in that further include safety valve
(600), the cabinet (100) are set to, pressure release is used for.
11. a kind of battery thermal runaway experimental system (1) characterized by comprising
Battery thermal runaway experimental provision (10) described in any one of claim 1-10；
Measuring device (20) is connect with the battery thermal runaway experimental provision (10), is used for measurement data；
Data analysis set-up (30) is connect with the measuring device (20), for obtaining the number of the measuring device (20) measurement
According to, and be analyzed and processed.
12. battery thermal runaway experimental system (1) according to claim 11, which is characterized in that further include display device
(40), it is connect with the data analysis set-up (30), is used for display data analysis processing result.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828457A (en) * | 2018-07-27 | 2018-11-16 | 清华大学 | Battery thermal runaway experimental provision and its system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828457A (en) * | 2018-07-27 | 2018-11-16 | 清华大学 | Battery thermal runaway experimental provision and its system |
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