CN106842062A - Secondary cell thermal runaway test device and its method of testing - Google Patents
Secondary cell thermal runaway test device and its method of testing Download PDFInfo
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- CN106842062A CN106842062A CN201710197793.4A CN201710197793A CN106842062A CN 106842062 A CN106842062 A CN 106842062A CN 201710197793 A CN201710197793 A CN 201710197793A CN 106842062 A CN106842062 A CN 106842062A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
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Abstract
The invention discloses a kind of secondary cell thermal runaway test device and its method of testing, the secondary cell thermal runaway test device includes：Test casing, is provided with the test chamber for placing secondary cell sample in the test box body；Air distribution system, the air distribution system is connected with the test chamber, for being adjusted to gas pressure in the test chamber；Temperature control system, the temperature control system is used to carry out temperature adjustment to the test chamber；First temperature sensor, first temperature sensor is used to be placed on the position to be measured of secondary cell sample, and for being electrically connected with data acquisition equipment；And battery operated system.The secondary cell thermal runaway test device and its method of testing, pressure, temperature can be provided and its controllable coupling environment Parameter Conditions are waited, with this, it is available for studying the heat release characteristic and thermal runaway rule when secondary cell carries out discharge and recharge under controllable complicated air pressure, temperature and its coupling test environment.
Description
Technical field
The present invention relates to the thermally safe field of secondary cell, more particularly to a kind of secondary cell thermal runaway test device and its survey
Method for testing.
Background technology
With caused by secondary cell thermal runaway, catastrophic failure rises year by year, and scientific knowledge secondary cell is in complicated work
Make the thermal runaway characteristic under state, and develop on this basis and optimize secondary cell thermal management technology have become it is current secondary
The vital task of battery industry circle.Secondary cell itself heat transfer process is influenceed by many factors, wherein by external environment
Influence it is fairly obvious, such as environment temperature higher or high power charging-discharging can directly result in secondary cell thermal runaway, cause
Spontaneous combustion is even exploded.It is traditional, what the test device of thermal safety and thermal runaway rule for studying secondary cell was provided
Controllable environment parameter is more single, it is impossible to completes the secondary cell thermal runaway test under the influence of complex environment, causes to secondary electricity
The research accuracy of pond thermal runaway characteristic is not high.
The content of the invention
Based on this, it is necessary to provide a kind of secondary cell thermal runaway test device and its method of testing, secondary cell heat
Test device out of control and its method of testing can provide the secondary cell thermal runaway test under controllable coupling environment Parameter Conditions, carry
Height research accuracy.
Its technical scheme is as follows：
A kind of secondary cell thermal runaway test device, including：
Test casing, is provided with the test chamber for placing secondary cell sample in the test box body；
Air distribution system, the air distribution system is connected with the test chamber, for being carried out to gas pressure in the test chamber
Regulation；
Temperature control system, the temperature control system is used to carry out temperature adjustment to the test chamber；
First temperature sensor, first temperature sensor is used to be placed on the position to be measured of secondary cell sample, and
For being electrically connected with data acquisition equipment；And
Battery operated system, the battery operated system includes battery charging and discharging case, voltmeter, ammeter, the first wire
And second wire, the two-port of the battery charging and discharging case passes through first wire, the second wire and secondary cell respectively
The positive pole of sample, negative pole connection, the ammeter are connected on first wire, and the voltmeter is connected in parallel on described first and leads
Between line and the second wire, the voltmeter and ammeter are used to be electrically connected with data acquisition equipment.
Wherein in one embodiment, the test casing is included in the first end cap, the second end cap and both ends open
Empty main body, the middle cavity of the hollow body forms the test chamber, the first end of first end cap and the hollow body
Be tightly connected, and first end cap is detachably connected with the first end of the hollow body, second end cap with it is described in
Second end of empty main body is tightly connected, and second end cap is detachably connected with the second end of the hollow body.
Wherein in one embodiment, the air distribution system includes compressed air source, vavuum pump, the first gas circuit, the second gas
Road, main gas circuit, measurement gas circuit and barometer, one end of the measurement gas circuit connect with the test chamber, the measurement gas circuit
The other end be provided with the barometer, one end of the main gas circuit connects with the test chamber, and the main gas circuit is near the survey
The one end for trying chamber is provided with air intake valve, and the other end of the main gas circuit is exhaust outlet, and the main gas circuit is near the exhaust outlet
One end is provided with drain tap, and the compressed air source is connected by first gas circuit with the main gas circuit, first gas circuit
Air door is provided with, the vavuum pump is connected by second gas circuit with the main gas circuit, and second gas circuit is provided with
Vavuum pump valve.
Wherein in one embodiment, the secondary cell thermal runaway test device also includes waste gas gas circuit and gas sampling
Box, one end of the waste gas gas circuit connects with the test chamber, and the other end of the waste gas gas circuit is provided with the gas sampling box,
The waste gas gas circuit is provided with waste gas valve.
Wherein in one embodiment, the secondary cell thermal runaway test device also includes thermal camera, the survey
Examination casing also includes the observation cylinder on the outside of the hollow body, and first end and the test chamber of the observation cylinder connect
It is logical, and the first end of the observation cylinder and the placement position of secondary cell sample are corresponding, the second end sealing of the observation cylinder
Sight glass is provided with, the thermal camera is located at front of the sight glass away from the hollow body.
Wherein in one embodiment, the temperature control system includes cavity heating tape and second temperature sensor,
The hollow body is heat carrier, and cavity heating tape uniform winding is on the outer wall of the hollow body, and described second is warm
In the test chamber, the second temperature sensor is used to be electrically connected with data acquisition equipment degree sensor.
Wherein in one embodiment, the secondary cell thermal runaway test device also includes sealed wiring plug, described
Sealed wiring spigot seal is installed on the side wall of the hollow cylinder, and the sealed wiring plug has multiple wire connections
Head, the two ends of the conducting wire connector are located in the test chamber and outside test chamber respectively, first temperature sensor, second
Temperature sensor by the conducting wire connector and data acquisition equipment wired connection, the battery charging and discharging case, ammeter,
Located at the outside of the test chamber, first wire, the second wire realize the electricity to voltmeter by the conducting wire connector
The connection of pond battery charge and discharge box and secondary cell sample.
Wherein in one embodiment, the secondary cell thermal runaway test device also include support, frequency conversion axial flow fan,
Radome fairing, air velocity transducer and wind channel tube, the secondary cell thermal runaway test device possess hermetical testing pattern and open survey
Die trial formula,
When first end cap and the first end of the hollow body are tightly connected, the second end cap and the hollow body
When second end is tightly connected, the secondary cell thermal runaway test device is in hermetical testing pattern；
When first end cap is dismantled with the first end of the hollow body, the second end cap and the second of the hollow body
During the dismounting of end, the secondary cell thermal runaway test device is in open test pattern, and the radome fairing is hollow for both ends open
Structure, the first end of the radome fairing is arranged on the first end of the hollow body, and the middle cavity of the radome fairing with it is described
Test chamber is docked, and second end of the wind channel tube with the radome fairing away from the hollow body is docked, set in the wind channel tube
There is the frequency conversion axial flow fan, the branch is set up in the second end of the hollow body, and the support is used to support described hollow
Main body, in the test chamber, the air velocity transducer is used to be electrically connected with data acquisition equipment the air velocity transducer.
A kind of method of testing of secondary cell thermal runaway test device, dress is tested using described secondary cell thermal runaway
Put, comprise the following steps：
Secondary cell sample is placed in the test chamber of test casing；
Air distribution system starts carries out air pressure adjustment to test chamber, will be adjusted to default hyperbar value in test chamber as needed
Or default low pressure value；
Temperature control system starts carries out temperature adjustment to test chamber, will be adjusted to preset temperature value in test chamber；
Battery charging and discharging case is opened and provides default charge-discharge magnification value, preset voltage value or pre-set current value to secondary cell
Sample carries out charging measurement or discharge test, and ammeter and voltmeter are distinguished the electric current of real time record discharge and recharge, voltage and fed back
To data acquisition equipment, the first temperature sensor records the temperature change of the position to be measured of the secondary cell sample and feeds back to number
According to collecting device.
A kind of method of testing of secondary cell thermal runaway test device, dress is tested using described secondary cell thermal runaway
Put, comprise the following steps：
Secondary cell sample is placed in the test chamber of test casing；
Frequency conversion axial flow fan is opened, and adjusts the watt level of the frequency conversion axial flow fan, makes the reading of the air velocity transducer
Number reaches default air speed value or in default wind speed range；
Battery charging and discharging case is opened and provides default charge-discharge magnification value, preset voltage value or pre-set current value to secondary cell
Sample carries out charging measurement or discharge test, and ammeter and voltmeter are distinguished the electric current of real time record discharge and recharge, voltage and fed back
To data acquisition equipment, the first temperature sensor records the temperature change of the position to be measured of the secondary cell sample and feeds back to number
According to collecting device.
The beneficial effects of the present invention are：
When the secondary cell thermal runaway test device is tested, secondary cell sample is placed on the survey of test casing
In examination chamber, air distribution system can carry out air pressure adjustment to test chamber, will be adjusted to default hyperbar value in test chamber as needed
Or default low pressure value etc., temperature control system can carry out temperature adjustment to test chamber, and default temperature will be adjusted in test chamber
Angle value, battery charging and discharging case can provide default charge-discharge magnification value, preset voltage value or pre-set current value to secondary cell sample
Product carry out charging measurement or discharge test, and ammeter and voltmeter the electric current of real time record discharge and recharge, voltage and feed back to respectively
Data acquisition equipment, the first temperature sensor records the temperature change of the position to be measured of the secondary cell sample and feeds back to data
Collecting device, is easy to the affecting laws subsequently to secondary cell thermal runaway to study.The secondary cell thermal runaway test dress
Put, it is possible to provide pressure, temperature and its controllable coupling environment Parameter Conditions, with this, be available for research secondary cell in controllable complicated gas
The heat release characteristic and thermal runaway rule during different multiplying discharge and recharge are carried out under pressure, temperature and its coupling test environment, more
The nearly actual complex environmental condition of adjunction, improves the accuracy of research.
The method of testing of the secondary cell thermal runaway test device, can be in pressure, temperature and its controllable coupling environment
Secondary cell sample is tested under Parameter Conditions, with this, be available for research secondary cell controllable complicated air pressure, temperature and its
The heat release characteristic and thermal runaway rule during different multiplying discharge and recharge are carried out under coupling test environment, is more nearly actual multiple
Miscellaneous environmental condition, it is possible to increase the accuracy of research.
The method of testing of the secondary cell thermal runaway test device, can be under controllable flow field condition to secondary cell sample
Product are tested, and with this, are available for studying releasing when secondary cell carries out different multiplying discharge and recharge under controllable flow field test environment
Thermal characteristics and thermal runaway rule, it is possible to increase the accuracy of research.
Brief description of the drawings
Fig. 1 is the structural representation of the secondary cell thermal runaway test device described in the embodiment of the present invention；
Fig. 2 is the structural representation of the test casing described in the embodiment of the present invention；
Fig. 3 is in structure during open test pattern for the secondary cell thermal runaway test device described in the embodiment of the present invention
Schematic diagram；
Fig. 4 is in part during open test pattern for the secondary cell thermal runaway test device described in the embodiment of the present invention
Structural representation；
Fig. 5 is that the flowage structure of the method for testing of the secondary cell thermal runaway test device described in the embodiment of the present invention is illustrated
Figure one；
Fig. 6 is that the flowage structure of the method for testing of the secondary cell thermal runaway test device described in the embodiment of the present invention is illustrated
Figure two.
Description of reference numerals：
100th, casing is tested, 110, test chamber, 120, battery clamp, 130, fixture locking nut, the 140, first end cap,
142nd, the first gas circuit binding post, the 144, second gas circuit binding post, the 146, the 3rd gas circuit binding post, the 150, second end cap, 160, in
Empty main body, 170, observation cylinder, 180, sight glass, 200, air distribution system, 210, compressed air source, 220, vavuum pump, 230,
First gas circuit, 232, air door, the 240, second gas circuit, 242, vavuum pump valve, 250, main gas circuit, 252, air intake valve,
254th, exhaust outlet, 256, drain tap, 260, measurement gas circuit, 270, barometer, 300, temperature control system, 310, cavity heating
Band, 320, second temperature sensor, the 400, first temperature sensor, 500, battery operated system, 510, battery charging and discharging case,
520th, voltmeter, 530, ammeter, the 540, first wire, the 550, second wire, 600, waste gas gas circuit, 610, waste gas valve,
700th, gas sampling box, 800, thermal camera, 900, sealed wiring plug, 1000, support, 1100, frequency conversion axial flow fan,
1200th, radome fairing, 1300, air velocity transducer, 1400, wind channel tube, 10, secondary cell sample.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give better embodiment of the invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described implementation method.On the contrary, the purpose for providing these implementation methods is to make to understand more the disclosure
Plus it is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Conversely, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertical ", " level ", "left", "right" and similar statement are
For illustrative purposes, it is unique implementation method to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the implementation method of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more
The arbitrary and all of combination of related Listed Items.Term as used herein " first ", " second " etc. are used herein
Be should not be limited by these terms in differentiation object, but these objects.
The structure of test casing 100 and its perspective view of test chamber 110 are illustrated in Fig. 2.As shown in Figure 1 and Figure 2, one
Plant secondary cell thermal runaway test device, including test casing 100, air distribution system 200, temperature control system 300, the first temperature
Sensor 400 and battery operated system 500.The test for placing secondary cell sample 10 is provided with the test casing 100
Chamber 110.The air distribution system 200 is connected with the test chamber 110, for being carried out to the gas pressure in the test chamber 110
Regulation.The temperature control system 300 is used to carry out temperature adjustment to the test chamber 110.First temperature sensor 400
Position to be measured for being placed on secondary cell sample 10, and for being electrically connected with data acquisition equipment.It is described battery operated
System 500 includes battery charging and discharging case 510, voltmeter 520, ammeter 530, the first wire 540 and the second wire 550.Institute
The two-port of battery charging and discharging case 510 is stated respectively by first wire 540, the second wire 550 and secondary cell sample 10
Positive pole, negative pole connection.The ammeter 530 is connected on first wire 540.The voltmeter 520 is connected in parallel on described
Between first wire 540 and the second wire 550.The voltmeter 520 and ammeter 530 are used to electrically connect with data acquisition equipment
Connect.
When the secondary cell thermal runaway test device is tested, secondary cell sample 10 is placed on test casing
In 100 test chamber 110, air distribution system 200 can carry out air pressure adjustment to test chamber 110, as needed by test chamber 110
Default hyperbar value or default low pressure value etc. are adjusted to, temperature control system 300 can enter trip temperature tune to test chamber 110
Section, will be adjusted to preset temperature value in test chamber 110, and battery charging and discharging case 510 can provide default charge-discharge magnification value, preset
Magnitude of voltage or pre-set current value carry out charging measurement or discharge test, ammeter 530 and voltmeter 520 to secondary cell sample 10
The electric current of real time record discharge and recharge, voltage and data acquisition equipment is fed back to respectively, it is secondary that the first temperature sensor 400 records this
The temperature change of the position to be measured of battery sample 10 simultaneously feeds back to data acquisition equipment, is easy to follow-up to secondary cell thermal runaway
Affecting laws are studied.The secondary cell thermal runaway test device, it is possible to provide pressure, temperature and its controllable coupling environment ginseng
Said conditions, with this, are available for research secondary cell to carry out difference under controllable complicated air pressure, temperature and its coupling test environment
Heat release characteristic and thermal runaway rule during rate charge-discharge, are more nearly actual complex environmental condition, improve the accurate of research
Property.
In the present embodiment, the quantity of the first temperature sensor 400 is relative with the number of positions to be measured of secondary cell sample 10
Should, when secondary cell sample 10 position to be measured for it is multiple when, the first temperature sensor 400 corresponds to multiple, and corresponding the
One temperature sensor 400 is arranged on corresponding position to be measured.Alternatively, first temperature sensor 400 is thermocouple, is installed
Convenience, good pressure-resistant performance, certainty of measurement are high.Data acquisition equipment can be data collecting card, and online note is realized by computer
Record and data storage.
As shown in Fig. 2 the inwall of the test chamber 110 is provided with the battery clamp for installing secondary cell sample 10
120, the battery clamp 120 is provided with the fixture locking nut 130 for fixing secondary cell sample 10.Secondary cell sample
10 can be fixed on battery clamp 120 by fixture locking nut 130, and then secondary cell sample 10 can reliably be installed and put
It is placed in test chamber 110.In this implementation, battery clamp 120 is located at the middle part of test chamber 110, is easily installed and test.
Further, the test casing 100 includes the hollow of the first end cap 140, the second end cap 150 and both ends open
Main body 160.The middle cavity of the hollow body 160 forms the test chamber 110.First end cap 140 and the hollow master
The first end of body 160 is tightly connected, and first end cap 140 is detachably connected with the first end of the hollow body 160.Institute
The second end cap 150 is stated to be tightly connected with the second end of the hollow body 160, and second end cap 150 and the hollow master
Second end of body 160 is detachably connected.Using said structure, the first end cap 140, the second end cap 150 are removable with test casing 100
Connection is unloaded, is easy to be placed into secondary cell in test chamber 110；And the first end cap 140, the second end cap 150 and hollow body 160
It is during connection and is tightly connected, ensure that test chamber 110 has good air-tightness, it is ensured that carry out air pressure, temperature and its coupling
Pressure, temperature when cooperation is tested in test chamber 110 maintain the numerical value set by test, improve the accuracy of test.
In the present embodiment, the two ends of the hollow body 160 are flange flange structure.First end cap 140 is with
The flange plate structure of the first end matching of empty main body 160, the first end cap 140 is by fastening bolt and the first of hollow body 160
End is tightly connected.Second end cap 150 is the flange plate structure matched with the second end of hollow body 160, the second end cap 150
It is tightly connected with the second end of hollow body 160 by fastening bolt.And then, easy for installation, good sealing effect.Alternatively, institute
Hollow body 160 is stated for tubular structure, is easy to manufacture, structure is attractive in appearance.
Further, as shown in figure 1, the air distribution system 200 includes compressed air source 210, vavuum pump 220, the first gas
Road 230, the second gas circuit 240, main gas circuit 250, measurement gas circuit 260 and barometer 270.It is described measurement gas circuit 260 one end with
The test chamber 110 is connected, and the other end of the measurement gas circuit 260 is provided with the barometer 270.The one of the main gas circuit 250
End connects with the test chamber 110, and the main gas circuit 250 is provided with air intake valve 252 near one end of the test chamber 110.Institute
The other end of main gas circuit 250 is stated for exhaust outlet 254, the main gas circuit 250 is provided with air bleeding valve near one end of the exhaust outlet 254
Door 256.The compressed air source 210 is connected by first gas circuit 230 with the main gas circuit 250.First gas circuit 230
It is provided with air door 232.The vavuum pump 220 is connected by second gas circuit 240 with the main gas circuit 250.Described
Two gas circuits 240 are provided with vavuum pump valve 242.In the present embodiment, the compressed air source 210 can be high pressure air bottle.
Using said structure, vavuum pump 220 is used to provide the hypobaric test of secondary cell sample 10, compressed air
Source 210 is used to provide the hyperbaric environment test of secondary cell sample 10, when hyperbar to be carried out is tested, in test chamber 110
After inside placing secondary cell sample 10, vavuum pump valve 242 and drain tap 256 are closed, open air door 232 and air inlet
Valve 252, makes the pressure-air in compressed air source 210 flow into test chamber 110, treats that the reading of barometer 270 reaches default height
Air door 232 and air intake valve 252 are closed during atmospheric pressure value；When low pressure to be carried out is tested, placed in test chamber 110
After secondary cell sample 10, air door 232 and drain tap 256 are closed, open vavuum pump valve 242 and air intake valve 252,
Vavuum pump 220 is opened, air intake valve 252 and vavuum pump 220 are closed when the reading of barometer 270 reaches default low pressure value.Enter
And, it is capable of achieving to the air pressure adjustment in test chamber 110, and it is easy to operate.Additionally, the opening and closing by controlling drain tap 256, one
Aspect, can play a part of to finely tune air pressure, when air pressure is slightly higher or lower slightly compared to preset pressure value in test chamber 110, can beat
Drive air valve 252 into carries out appropriate pressure release so that the reading of barometer 270 returns preset pressure value with drain tap 256；The opposing party
Face, when air intake valve 252 is closed, by opening drain tap 256, exhaust outlet 254 can be by main gas circuit 250, the first gas circuit
230 and the second inner unnecessary gas discharge of gas circuit 240, it is ensured that the security of equipment.
Alternatively, it is the stainless steel gas of 5mm that first gas circuit 230, the second gas circuit 240, main gas circuit 250 use internal diameter
Pipe, possesses certain plasticity and hardness.Additionally, on the premise of convenient operation each gas circuit moderate length, gas can be avoided to exist
Cause to waste in gas path pipe.
Further, the secondary cell thermal runaway test device also includes waste gas gas circuit 600 and gas sampling box 700.
One end of the waste gas gas circuit 600 connects with the test chamber 110, and the other end of the waste gas gas circuit 600 is provided with the waste gas
Disposable box 700.The waste gas gas circuit 600 is provided with waste gas valve 610.And then, after test terminates, waste gas valve can be opened
610, the waste gas in test chamber 110 is entered in gas sampling box 700, it is easy to subsequently be further analyzed treatment.
As shown in Figure 1 and Figure 2, the secondary cell thermal runaway test device also includes thermal camera 800.The test
Casing 100 also includes the observation cylinder 170 located at the outside of the hollow body 160.The first end of the observation cylinder 170 and institute
Test chamber 110 is stated to connect, and the first end of the observation cylinder 170 and the placement position of secondary cell sample 10 are corresponding.The sight
The the second end sealing for examining cylinder 170 is provided with sight glass 180.The thermal camera 800 is remote located at the sight glass 180
From the front of the hollow body 160.Using said structure, it is possible to use thermal camera 800 is recorded through sight glass 180
The surface temperature field of the secondary cell sample 10 is deduced, and with this, can further study secondary cell in complicated air pressure and temperature ring
Under border, the heat development characteristic and thermal runaway rule during discharge and recharge are carried out with different multiplying.Additionally, in follow-up study, it is infrared
Video camera 800 record data, be arranged on the specific position to be measured of secondary cell the first temperature sensor 400 record data,
And can mutually be cooperateed between the waste gas data collected in gas sampling box 700, mutually confirmed, easily facilitate researcher and draw
The thermal runaway rule of secondary cell.In the present embodiment, the sight glass 180 is high temperature resistant, the implosion guard of high pressure.
Further, the temperature control system 300 includes cavity heating tape 310 and second temperature sensor 320.Institute
Hollow body 160 is stated for heat carrier.The uniform winding of cavity heating tape 310 is on the outer wall of the hollow body 160.It is described
In the test chamber 110, the second temperature sensor 320 is used for and data acquisition equipment second temperature sensor 320
It is electrically connected with.Using said structure, cavity heating tape 310 can heat to hollow body 160, and then to test chamber 110
Temperature adjustment is inside realized, second temperature sensor 320 can be monitored to the temperature in test chamber 110 and feed back to data and adopt
Collection equipment, and then linkage carries out the temperature adjustment of test chamber 110 together with cavity heating tape 310 so that reached in test chamber 110
Preset temperature value, and temperature adjusting is accurate；By using cavity heating tape 310, and by the uniform winding of cavity heating tape 310 in
On the outer wall of empty main body 160, cavity heating tape 310 can effectively ensure that different in test chamber 110 to the homogeneous heating of test chamber 110
The temperature of position is consistent, and further improves the accuracy of test.
In the present embodiment, the outer layer of cavity heating tape 310 is heat-insulating material, can reduce the thermal loss of test chamber 110,
Maintain to be in preset temperature value in test chamber 110, and reduce energy consumption.Alternatively, the second temperature sensor 320 is thermoelectricity
Even, easy for installation, good pressure-resistant performance, certainty of measurement are high.The second temperature sensor 320 is three, and three second temperatures are passed
Sensor 320 is respectively arranged on the upper, middle and lower of test chamber 110.And then, can preferably measure the temperature in test chamber 110
Degree.Specifically, when judging whether to reach preset temperature value, three average values of second temperature sensor 320 be can use.
The hollow body 160, the first end cap 140 and the second end cap 150 are stainless steel, good heat conductivity, by force
Degree is higher, tests the sealing and compressive resistance of casing 100 preferably, the secondary cell heat that can be used under various extreme environmental conditions
Performance test out of control.
In the present embodiment, the secondary cell thermal runaway test device also includes sealed wiring plug 900.The sealing connects
Line plug 900 is seal-installed on the side wall of the hollow cylinder.The sealed wiring plug 900 has multiple wire connections
Head.The two ends of the conducting wire connector are located in the test chamber 110 and outside test chamber 110 respectively.First TEMP
Device 400, second temperature sensor 320 are by the conducting wire connector and data acquisition equipment wired connection.The battery fills
Discharge tank 510, ammeter 530, voltmeter 520 are located at the outside of the test chamber 110.First wire 540, the second wire
550 connections that the battery charging and discharging case 510 and secondary cell sample 10 are realized by the conducting wire connector.It is close by setting
Envelope connection plug 900, is easy to the element being located in test chamber 110 to realize wired connection with the element being located at outside test chamber 110, and
Carry out being to seal in succession during wired connection, it is ensured that the air-tightness that test chamber 110 has had.
Specifically, the sealed wiring plug 900 includes non-conductor base and many on the non-conductor base
Individual conducting wire connector.Alternatively, non-conductor base can be ceramic base, and conducting wire connector can be the gold for possessing conducting function
Category post such as copper rod etc..Non-conductor base can be directly embedded on the side wall of hollow cylinder by helicitic texture.Sealed wiring is inserted
First 900 quantity can be arranged as required to for one, it is two or more, be easy to implement preferable wiring.It is described in the present embodiment
Sealed wiring plug 900 is two, and two sealed wiring plugs 900 are respectively arranged on the top of test chamber 110, bottom, are connect
During line, each wire is difficult chaotic knotting, easy to operate.
Further, as shown in figure 3, the secondary cell thermal runaway test device also includes support 1000, frequency conversion axle stream
Blower fan 1100, radome fairing 1200, air velocity transducer 1300 and wind channel tube 1400.The secondary cell thermal runaway test device possesses
Hermetical testing pattern and open test pattern.As shown in Figure 1 and Figure 2, when first end cap 140 and the hollow body 160
First end is tightly connected, and when the second end cap 150 is tightly connected with the second end of the hollow body 160, secondary cell heat is lost
Control test device is in hermetical testing pattern, using the teaching of the invention it is possible to provide pressure, temperature and its waits controllable coupling environment Parameter Conditions, is available for grinding
The heat release for studying carefully secondary cell when carrying out different multiplying discharge and recharge under controllable complicated air pressure, temperature and its coupling test environment
Characteristic and thermal runaway rule.
And work as the first end dismounting of first end cap 140 and the hollow body 160, the second end cap 150 with it is described in
When second end of empty main body 160 is dismantled, the secondary cell thermal runaway test device is in open test pattern.Such as Fig. 3, Fig. 4 institute
Show, the radome fairing 1200 is the hollow structure of both ends open, the first end of the radome fairing 1200 is arranged on the hollow master
The first end of body 160, and the middle cavity of the radome fairing 1200 docks with the test chamber 110, the wind channel tube 1400 and institute
State second end docking of the radome fairing 1200 away from the hollow body 160.The frequency conversion axle stream is provided with the wind channel tube 1400
Blower fan 1100.Located at the second end of the hollow body 160, the support 1000 is used to support described hollow the support 1000
Main body 160, ground or desktop are lifted away from by hollow body 160 so that the second end of hollow body 160 is circulation status.The wind
In the test chamber 110, the air velocity transducer 1300 is used to be electrically connected with data acquisition equipment fast sensor 1300.
In the present embodiment, the support 1000 is adjustable support 1000, can as needed adjust the height of hollow body 160
Degree.Alternatively, the support 1000 is many adjusting screws, and the second end of hollow body 160 is provided with multiple screwed holes, by adjusting
Height of the section adjusting screw in screwed hole, is capable of achieving the regulation to the height of hollow body 160, and simple structure is easy to operate.Institute
Air velocity transducer 1300 is stated for anemobiagraph, easy for installation, certainty of measurement is high.The air velocity transducer 1300 could be arranged to many
It is individual, air speed value that can be in more accurate measurement test chamber 110.The first end of the radome fairing 1200 is convex located at adpting flange
Edge, adpting flange flange can be connected with the flange flange structure of hollow body, and then cause radome fairing 1200 by fastening spiral shell
Bolt is reliably connected with hollow body 160.
When the secondary cell thermal runaway test device of the present embodiment is in open test pattern, test chamber can be adjusted
Flow field change in 110, so heat release characteristic of realization secondary cell when carrying out discharge and recharge under controllable flow fields environment with
And thermal runaway rule.The operation principle for open test pattern is：Secondary cell sample 10 is placed on test casing 100
In test chamber 110, open frequency conversion axial flow fan 1100 and adjust the watt level of frequency conversion axial flow fan 1100, make air velocity transducer
1300 reading reaches default air speed value scope, keeps the power of frequency conversion axial flow fan 1100, battery charging and discharging case 510 to open and carry
Charging measurement is carried out to secondary cell sample 10 for default charge-discharge magnification value, preset voltage value or pre-set current value or electric discharge is surveyed
Examination, ammeter 530 and voltmeter 520 electric current of real time record discharge and recharge, voltage and feed back to data acquisition equipment respectively, and first
Temperature sensor 400 records the temperature change of the position to be measured of the secondary cell sample 10 and feeds back to data acquisition equipment, i.e.,
It is capable of achieving the test to secondary cell sample 10.
As shown in Figure 1 and Figure 2, the end cap 150 of first end cap 140 or second is provided with the first gas circuit through its own
Binding post 142, the second gas circuit binding post 144 and the 3rd gas circuit binding post 146.One end of the main gas circuit 250 is by described
First gas circuit binding post 142 is connected with the test chamber 110.One end of the measurement gas circuit 260 is connect by second gas circuit
Terminal 144 is connected with the test chamber 110.One end of the waste gas gas circuit 600 is by the 3rd gas circuit binding post 146 and institute
Test chamber 110 is stated to connect.Situation of each binding post on the first end cap 140 is illustrated in the accompanying drawing of the present embodiment.Using
Said structure, on the one hand, it is convenient, reliable that each gas circuit is connected with test chamber 110；On the other hand, when need dismantle the first end cap
140th, when the second end cap 150 is to carry out opening test pattern, by dismantling the first end cap 140, the second end cap 150, air distribution system
200 and waste gas gas circuit 600 also correspond to disassemble, it is easy to operate.
Secondary cell thermal runaway test device described in the present embodiment, with hermetical testing pattern and open test pattern two
The pattern of kind.When carrying out hermetical testing pattern, the pressure and temperature in test chamber 110 are can adjust, there is provided pressure, temperature and its wait can
Control coupling environment Parameter Conditions, with this, are available for research secondary cell in controllable complicated air pressure, temperature and its coupling test wrapper
The heat release characteristic and thermal runaway rule during discharge and recharge are carried out under border；When carrying out opening test pattern, can adjust in test chamber 110
Flow field velocity, using the teaching of the invention it is possible to provide pressure controllable couple environment Parameter Conditions, and then be available for research secondary cell in controllable flow field ring
The heat release characteristic and thermal runaway rule during discharge and recharge are carried out under border.The secondary cell thermal runaway test device, it is possible to provide no
Test environment under same air pressure, different temperatures, different flow field effects, is capable of achieving research secondary cell in controllable complicated air pressure, temperature
The heat release characteristic and thermal runaway rule during discharge and recharge are carried out under degree, flow field and its coupling, is especially applicable for carrying out non-
The thermal runaway test of the lithium ion battery under conventional extremely complicated environmental condition；The test each component combination of casing 100 is convenient, can be with
The switching of test pattern is rapidly completed, it is easy to operate.
As shown in Figure 1, shown in Figure 5, a kind of method of testing of secondary cell thermal runaway test device, using described secondary cell
Thermal runaway test device, comprises the following steps：
S11：Secondary cell sample 10 is placed in the test chamber 110 of test casing 100；
S12：Air distribution system 200 starts carries out air pressure adjustment to test chamber 110, as needed by regulation in test chamber 110
To preset hyperbar value or default low pressure value；
S13：Temperature control system 300 starts carries out temperature adjustment to test chamber 110, will be adjusted in test chamber 110 pre-
If temperature value；
S14：Battery charging and discharging case 510 is opened and provides default charge-discharge magnification value, preset voltage value or pre-set current value pair
Secondary cell sample 10 carries out charging measurement or discharge test, and ammeter 530 and voltmeter 520 distinguish real time record discharge and recharge
Electric current, voltage simultaneously feed back to data acquisition equipment, and the first temperature sensor 400 records the position to be measured of the secondary cell sample 10
Temperature change and feed back to data acquisition equipment.
The method of testing of the secondary cell thermal runaway test device, can be in pressure, temperature and its controllable coupling environment
Secondary cell sample 10 is tested under Parameter Conditions, with this, be available for research secondary cell controllable complicated air pressure, temperature and
The heat release characteristic and thermal runaway rule during discharge and recharge are carried out under its coupling test environment, actual complex environment is more nearly
Condition, it is possible to increase the accuracy of research.
Further, the order of above-mentioned steps S12 and S13 is unrestricted.Alternatively, when step S12 is in preceding, step S13
When rear, step is also included between step S13 and step S14：
S131：When air distribution system 200 in test chamber 110 by hyperbar state is adjusted to, air intake valve 252 and row are opened
Air valve 256, carrying out pressure release regulation makes air pressure in test chamber 110 be default hyperbar value；When air distribution system 200 is by test chamber
When being adjusted to low pressure state in 110, vavuum pump 220 and air intake valve 252 are opened, carried out when pressure release is adjusted in test chamber 110
Air pressure is default low pressure value.When carrying out step S12 in the ban and carrying out step S13 again, air pressure in test chamber 110 can because being heated and
Cause air pressure to slightly have rising, by using step S131, may be such that air pressure is returned to preset value again in test chamber 110, can enter
One step improves the accuracy of test.
As shown in Fig. 3, Fig. 6, a kind of method of testing of secondary cell thermal runaway test device, using described secondary cell
Thermal runaway test device, comprises the following steps：
S21：Secondary cell sample 10 is placed in the test chamber 110 of test casing 100；
S22：Frequency conversion axial flow fan 1100 is opened, and adjusts the watt level of the frequency conversion axial flow fan 1100, makes the wind
The reading of fast sensor 1300 reaches default air speed value or in default wind speed range, and keeps the default air speed value or default wind
Fast scope；
S23：Battery charging and discharging case 510 is opened and provides default charge-discharge magnification value, preset voltage value or pre-set current value pair
Secondary cell sample 10 carries out charging measurement or discharge test, and ammeter 530 and voltmeter 520 distinguish real time record discharge and recharge
Electric current, voltage simultaneously feed back to data acquisition equipment, and the first temperature sensor 400 records the position to be measured of the secondary cell sample 10
Temperature change and feed back to data acquisition equipment.
The method of testing of the secondary cell thermal runaway test device, can be under the conditions of controllable flow field ambient parameter to two
Primary cell sample 10 is tested, and with this, is available for studying when secondary cell carries out discharge and recharge under controllable flow field test environment
Heat release characteristic and thermal runaway rule, it is possible to increase the accuracy of research.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply 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, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of secondary cell thermal runaway test device, it is characterised in that including：
Test casing, is provided with the test chamber for placing secondary cell sample in the test box body；
Air distribution system, the air distribution system is connected with the test chamber, for being adjusted to gas pressure in the test chamber；
Temperature control system, the temperature control system is used to carry out temperature adjustment to the test chamber；
First temperature sensor, first temperature sensor is used to be placed on the position to be measured of secondary cell sample, and is used for
It is electrically connected with data acquisition equipment；And
Battery operated system, the battery operated system include battery charging and discharging case, voltmeter, ammeter, the first wire and
Second wire, the two-port of the battery charging and discharging case passes through first wire, the second wire and secondary cell sample respectively
Positive pole, negative pole connection, the ammeter is connected on first wire, the voltmeter be connected in parallel on first wire with
Between second wire, the voltmeter and ammeter are used to be electrically connected with data acquisition equipment.
2. secondary cell thermal runaway test device according to claim 1, it is characterised in that the test casing includes the
The hollow body of one end cap, the second end cap and both ends open, the middle cavity of the hollow body forms the test chamber, described
First end cap is tightly connected with the first end of the hollow body, and first end cap can with the first end of the hollow body
Dismounting connection, second end cap is tightly connected with the second end of the hollow body, and second end cap is hollow with described
Second end of main body is detachably connected.
3. secondary cell thermal runaway test device according to claim 2, it is characterised in that the air distribution system includes pressure
Contracting air-source, vavuum pump, the first gas circuit, the second gas circuit, main gas circuit, measurement gas circuit and barometer, the one of the measurement gas circuit
End connect with the test chamber, and the other end for measuring gas circuit is provided with the barometer, one end of the main gas circuit with it is described
Test chamber is connected, and the main gas circuit is provided with air intake valve near one end of the test chamber, and the other end of the main gas circuit is row
Gas port, the main gas circuit is provided with drain tap near one end of the exhaust outlet, and the compressed air source passes through first gas
Road connects with the main gas circuit, and first gas circuit is provided with air door, and the vavuum pump is by second gas circuit and institute
Main gas circuit connection is stated, second gas circuit is provided with vavuum pump valve.
4. secondary cell thermal runaway test device according to claim 1, it is characterised in that also including waste gas gas circuit and useless
Gas disposable box, one end of the waste gas gas circuit connects with the test chamber, and the other end of the waste gas gas circuit is provided with the waste gas
Disposable box, the waste gas gas circuit is provided with waste gas valve.
5. secondary cell thermal runaway test device according to claim 2, it is characterised in that also including thermal camera,
The test casing also includes the observation cylinder on the outside of the hollow body, first end and the survey of the observation cylinder
The connection of examination chamber, and the first end of the observation cylinder and the placement position of secondary cell sample are corresponding, the second of the observation cylinder
End sealing is provided with sight glass, and the thermal camera is located at front of the sight glass away from the hollow body.
6. the secondary cell thermal runaway test device according to claim any one of 1-5, it is characterised in that the temperature control
System processed includes cavity heating tape and second temperature sensor, and the hollow body is heat carrier, and the cavity heating tape is equal
Even to be wrapped on the outer wall of the hollow body, the second temperature sensor is located in the test chamber, the second temperature
Sensor is used to be electrically connected with data acquisition equipment.
7. secondary cell thermal runaway test device according to claim 6, it is characterised in that also inserted including sealed wiring
Head, the sealed wiring spigot seal is installed on the side wall of the hollow cylinder, and the sealed wiring plug is led with multiple
Line connector, the two ends of the conducting wire connector are located in the test chamber and outside test chamber respectively, first TEMP
Device, second temperature sensor by the conducting wire connector and data acquisition equipment wired connection, the battery charging and discharging case,
, located at the outside of the test chamber, first wire, the second wire are realized by the conducting wire connector for ammeter, voltmeter
The connection of the battery charging and discharging case and secondary cell sample.
8. the secondary cell thermal runaway test device according to claim any one of 2-5, it is characterised in that also including branch
Frame, frequency conversion axial flow fan, radome fairing, air velocity transducer and wind channel tube, the secondary cell thermal runaway test device possess closed
Test pattern and open test pattern,
When first end cap and the first end of the hollow body are tightly connected, the second end cap and the second of the hollow body
When end is tightly connected, the secondary cell thermal runaway test device is in hermetical testing pattern；
When first end cap is dismantled with the first end of the hollow body, the second end cap is torn open with the second end of the hollow body
When unloading, the secondary cell thermal runaway test device is in open test pattern, and the radome fairing is the hollow structure of both ends open,
The first end of the radome fairing is arranged on the first end of the hollow body, and the radome fairing middle cavity and the test chamber
Docking, second end of the wind channel tube with the radome fairing away from the hollow body is docked, and is provided with described in the wind channel tube
Frequency conversion axial flow fan, the branch is set up in the second end of the hollow body, and the support is used to support the hollow body, institute
Air velocity transducer is stated in the test chamber, the air velocity transducer is used to be electrically connected with data acquisition equipment.
9. a kind of method of testing of secondary cell thermal runaway test device, it is characterised in that using such as claim any one of 1-8
Described secondary cell thermal runaway test device, comprises the following steps：
Secondary cell sample is placed in the test chamber of test casing；
Air distribution system starts carries out air pressure adjustment to test chamber, will be adjusted to default hyperbar value or pre- in test chamber as needed
If low pressure value；
Temperature control system starts carries out temperature adjustment to test chamber, will be adjusted to preset temperature value in test chamber；
Battery charging and discharging case is opened and provides default charge-discharge magnification value, preset voltage value or pre-set current value to secondary cell sample
Carry out charging measurement or discharge test, ammeter and voltmeter the electric current of real time record discharge and recharge, voltage and feed back to number respectively
According to collecting device, the first temperature sensor records the temperature change of the position to be measured of the secondary cell sample and feeds back to data and adopts
Collection equipment.
10. a kind of method of testing of secondary cell thermal runaway test device, it is characterised in that using as claimed in claim 8
Secondary cell thermal runaway test device, comprises the following steps：
Secondary cell sample is placed in the test chamber of test casing；
Frequency conversion axial flow fan is opened, and adjusts the watt level of the frequency conversion axial flow fan, reaches the reading of the air velocity transducer
To default air speed value or in default wind speed range；
Battery charging and discharging case is opened and provides default charge-discharge magnification value, preset voltage value or pre-set current value to secondary cell sample
Carry out charging measurement or discharge test, ammeter and voltmeter the electric current of real time record discharge and recharge, voltage and feed back to number respectively
According to collecting device, the first temperature sensor records the temperature change of the position to be measured of the secondary cell sample and feeds back to data and adopts
Collection equipment.
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