CN105403474B - A kind of composite solidpropellant natural acceleration test device and method - Google Patents

A kind of composite solidpropellant natural acceleration test device and method Download PDF

Info

Publication number
CN105403474B
CN105403474B CN201510716538.7A CN201510716538A CN105403474B CN 105403474 B CN105403474 B CN 105403474B CN 201510716538 A CN201510716538 A CN 201510716538A CN 105403474 B CN105403474 B CN 105403474B
Authority
CN
China
Prior art keywords
babinet
temperature
air
humidity
composite solidpropellant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201510716538.7A
Other languages
Chinese (zh)
Other versions
CN105403474A (en
Inventor
魏小琴
杨万均
符朝旭
刘伟
胥泽奇
罗天元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
No 59 Research Institute of China Ordnance Industry
Original Assignee
No 59 Research Institute of China Ordnance Industry
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by No 59 Research Institute of China Ordnance Industry filed Critical No 59 Research Institute of China Ordnance Industry
Priority to CN201510716538.7A priority Critical patent/CN105403474B/en
Publication of CN105403474A publication Critical patent/CN105403474A/en
Application granted granted Critical
Publication of CN105403474B publication Critical patent/CN105403474B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

A kind of composite solidpropellant natural acceleration test device and method, including rectangular test case, chamber include babinet and case lid, and babinet side is equipped with forced ventilation cooling system, and Temperature and Humidity Control and data collecting system are equipped with outside babinet, specimen mounting is equipped with babinet.Composite solidpropellant natural acceleration test device of the present invention can be positioned over the open air of tropical marine atmospheres environment, and placed with local latitude overturning angle, to reach best endothermic effect, realize and simulate and strengthen solar radiation fuel factor and day and night temperature shock effect, environment temperature day and night temperature difference circulation, Seasonal Temperature Difference circulation are kept, so as to truly, accurately and rapidly obtain the changing rule of composite solidpropellant mechanical property.

Description

A kind of composite solidpropellant natural acceleration test device and method
Technical field
The present invention relates to a kind of acceleration test apparatus, more particularly to a kind of natural acceleration examination for composite solidpropellant Experiment device.The invention further relates to a kind of natural acceleration test method of composite solidpropellant.
Background technology
Composite solidpropellant is the composite material containing energy using macromolecule as matrix, it, with particular characteristic, is solid fire The energy of arrow engine, its component occur to chemically react and release energy within the engine, make hair using its reaction product Motivation produces certain thrust.Composite solidpropellant is in storage process, due to being subject to the comprehensive of the factors such as complicated physics, chemistry Cooperation use, adhesive high polymer may occur solidify afterwards, oxidation cross-linked, chain rupture etc. reaction, its performance gradually change and Do not reach service index requirement, that is, lose use value, therefore it is the critical material and weakness for limiting engine storage life Link.Since composite solidpropellant has the characteristics that difficult replacement, maintenance difficult and maintenance cost are high, once generation cracking, The failures such as deformation can cause missile mishap.Therefore composite solidpropellant performance change information must be grasped, is reasonable The important judging basis of guided missile storage service life offer are provided.
At present mainly composite solidpropellant performance variation law is obtained using two kinds of test methods both at home and abroad:Storehouse is store Deposit specimen test method and laboratory accelerated test method.Although storehouse storage specimen test method can obtain more truly, can The result of the test leaned on, but testing expenses are high, cycle length, it is difficult to meet development, experiment and the requirement of Fast Evaluation.Laboratory accelerates The advantages of test period is short although test method has, favorable reproducibility, since accelerated test condition and actual storage environment carry Lotus is variant, for example guided missile is in land storehouse and warship cabin indoor storage, and when war preparedness is on duty outdoors, can undergo harsh Day and night temperature changes, and the Seasonal Temperature Difference change of fine day, cloudy day, the difference variation in the daytime of rainy day, and spring, summer, autumn and winter, make composite solid Phenomena such as body propellant is expanded and shunk repeatedly, cracked, embrittlement, sweat analysis, partial crystallization, mechanical property declines rapidly, but real Test room accelerated test condition can not accurate simulation these temperature difference shock effects, cause accelerated test extrapolating results and actual depot The uniformity of energy result of variations is poor.
The content of the invention
It is an object of the invention to provide a kind of composite solidpropellant natural acceleration test device, can simulate simultaneously stiffener rings Border temperature acts on the alternation of composite solidpropellant, accelerates the Heat Ageing of composite solidpropellant, true, rapidly anti- Reflect the shelf characteric changing rule of composite solidpropellant.
It is another object of the present invention to provide utilize above device solid propellant natural acceleration test for composite Method.
The object of the present invention is achieved like this, a kind of composite solidpropellant natural acceleration test device, including rectangle Chamber, chamber include babinet and case lid, and babinet side is equipped with forced ventilation cooling system, humiture control is equipped with outside babinet System and data collecting system, babinet is interior to be equipped with specimen mounting.Composite solidpropellant natural acceleration test device of the present invention can be placed Placed in the open air of tropical marine atmospheres environment, and with local latitude overturning angle, to reach best endothermic effect, realize simulation And strengthen solar radiation fuel factor and day and night temperature shock effect, environment temperature day and night temperature difference circulation, Seasonal Temperature Difference circulation are kept, So as to changing rule that is true, accurately and rapidly obtaining composite solidpropellant mechanical property.
Above-mentioned forced ventilation cooling system includes being arranged on shutter and return air hole on wall box, the chamber outside the side wall Aerofoil fan and motor are equipped with vivo, the bottom of box is equipped with air inlet.
When each point temperature uniformity meets or exceeds design temperature in babinet, the ventilation of box house internal air circulation dissipates Heat, i.e. motor work, and drive centrifugation blade to rotate and produce air quantity, by shutter outlet air, by the return air hole return air under shutter, Air inlet and aerofoil fan are closed at this time;When the arrival of 1 ceiling temperature of babinet or the maximum temperature more than setting, babinet outer circulation Aeration-cooling, i.e., aerofoil fan works, and forces to suck outside air from air inlet, and is radiated by aerofoil fan, realizes babinet Interior cooling.
Temperature and Humidity Control includes Temperature Humidity Sensor and data acquisition and communication controller, humiture with data collecting system Sensor enters in babinet from the air inlet of the bottom of box to be placed in the middle part of specimen mounting.Temperature Humidity Sensor is used to record chamber The temperature of interior air, humidity change, data gathering and communication controller by control forced ventilation cooling system motor and Aerofoil fan working status regulating box body temperature.
In order to reach more preferable heat insulation effect and endothermic effect, insulating layer is arranged on three side walls of babinet, in babinet Surface spraying has black fluororesin paint, box outer surface spraying solar selective heat-absorbing paint.
Second object of the present invention is achieved in that to be added naturally using above-mentioned device solid propellant for composite The method of speed experiment, includes the following steps:
1) by chamber slant setting in the open air of tropical marine atmospheres environment, the inclined angle is local latitude Angle, and babinet is grounded;
2) the composite solidpropellant sample of sealing is put on the specimen mounting in chamber, sets maximum temperature and threshold Value;
3) open Temperature and Humidity Control and temperature, the humidity of data collecting system record chamber inner air change, control Temperature in babinet;Open the change of forced ventilation cooling system control cabinet body temperature;
4) discharge.
Above-mentioned steps 3) in, Temperature Humidity Sensor is used to record the temperature of the air in chamber, humidity change, and data are adopted Collection is with communication controller by controlling the motor and aerofoil fan working status regulating box body temperature of forced ventilation cooling system; When each point temperature uniformity meets or exceeds the temperature range of setting in babinet, box house internal air circulation ventilation and heat, I.e. motor works, and drives centrifugation blade to rotate and produces air quantity, by shutter outlet air, by the return air hole return air under shutter, this When air inlet and aerofoil fan close;When the arrival of babinet ceiling temperature or the maximum temperature more than setting, babinet outer circulation is led to Wind cools down, i.e., aerofoil fan works, and forces to suck outside air from air inlet, and is radiated by aerofoil fan, realizes in babinet Cooling.
The present invention has the advantages that:
1st, composite solidpropellant natural acceleration test device of the present invention can be simulated and strengthened solar radiation fuel factor and daytime Night temperature difference shock effect, and keep environment temperature day and night the temperature difference circulation, Seasonal Temperature Difference circulation the characteristics of, contribute to it is true, accurate, Rapidly obtain the changing rule of composite solidpropellant mechanical property.
2nd, composite propellant accelerated test method of the present invention is simple and practicable, and accelerated ratio is high, and simulation is strong, result of the test Accurately and reliably.
Brief description of the drawings
Fig. 1 is composite solidpropellant natural acceleration test apparatus structure schematic diagram of the present invention;
Fig. 2 is the rearview of Fig. 1;
Fig. 3 is the bottom view of Fig. 1.
In figure, 1. babinets, 2. case lids, 3. forced ventilation cooling systems, 3-1. shutters, 4. Temperature and Humidity Controls adopt with data Collecting system, 5. specimen mountings.
Embodiment
Embodiment, a kind of composite solidpropellant natural acceleration test device, including rectangular chamber, test luggage Include babinet 1 and case lid 2, babinet 1 is cuboid, outside dimension:Deep 400mm × wide 1780mm × high 1420mm, dead size:It is deep 400mm × wide 1600mm × high 1300mm.1 skeleton of babinet is SUS304 stainless steels, and 1 shell of babinet uses the wire drawing of 1.5mm thickness not Become rusty steel plate, and 1 inner wall of babinet uses 1.0mm thickness overlay film stainless steel plates.One side wall is equipped with shutter 3-1 and return air hole, shutter Aerofoil fan and motor are equipped with cavity outside 3-1.Filling thickness is the high-quality insulative of 100mm between the inner wall and shell of side wall Material glass cotton is as insulating layer.1 bottom of babinet is equipped with air inlet, away from being made at the 150mm of bottom with stainless steel groove bar in babinet 1 Grid type, midfeather 100mm, 200mm, then 100mm, 200mm arrangement are used as specimen mounting 5.Interior sprays black fluorine entirely Resin paints, and solar selective heat-absorbing paint is sprayed in outer surface entirely.
Temperature and Humidity Control is located at outside babinet 1 with data collecting system 4, by Temperature Humidity Sensor and data gathering and communication control Device composition processed.Temperature Humidity Sensor enters juxtaposition in babinet 1 for Honeywell Temperature Humidity Sensor and from 1 bottom air inlet mouth of babinet Between specimen mounting 5, for recording temperature, the humidity change of 1 inner air of babinet;The storage of data gathering and communication controller is adopted The data of the Temperature and Humidity module of collection simultaneously controls forced ventilation cooling system working status, ensures that temperature upper limit is no more than setting most in babinet 1 High-temperature, the temperature difference are no more than threshold value, keep temperature uniformity in babinet.
Forced ventilation cooling system 3 includes two motors, aerofoil fan and the shutter that the right side of babinet 1 is equipped with.When babinet 1 When interior each point temperature uniformity meets or exceeds given threshold, force motor work, in 1 inner air of babinet circulating ventilation dissipate Heat;1 bottom air inlet mouth φ 100 of babinet, the sealing of wind top, when the arrival of 1 ceiling temperature of babinet or the maximum temperature more than setting, by force System sucks outside air from air inlet, and is radiated by aerofoil fan, realizes that babinet cools down.
Using the method for above device solid propellant natural acceleration test for composite, composite solidpropellant is three groups First composite solidpropellant or four constituent element composite solidpropellants, test procedure are as follows:
(1) the composite solidpropellant test sample is pressed into Type B tensile sample in GJB 770B-2005 methods 413.1 Dumb-bell shape tensile sample is made, preferably using 120mm × 25mm × 10mm specifications;Each detection cycle parallel sample quantity should be many In 5, keep sample in advance no less than 10.
(2) every 5 parallel samples are placed in 1 loading frock, cured by solid engines when being cooled to 20 DEG C most Big strain is as strain application value, by the engineering elongation between gages of sample.
(3) sample loaded in frock is put into the cast aluminium waterproof sealing box that waterproofing grade is IP66, and in seal box Inside it is put into the 1 bag of 200g activated blue silica gel.
(4) 20 DEG C ± 5 DEG C of adjusting ambient temperature, relative humidity are not more than 60%, tighten cast aluminium waterproof sealing box, and with close Sealing is sealed.
(5) chamber is tilted into 20 ° of open airs for being positioned over tropical marine atmospheres environment, and babinet 1 is grounded;By multiple castings Aluminium waterproof sealing box is put into chamber, unlatching Temperature and Humidity Control and data collecting system, setting device maximum temperature≤70 DEG C, Temperature uniformity≤3 DEG C.
(6) in 0d, 10d, 34d, 76d, 171d, 385d, 1 cast aluminium waterproof sealing box is respectively fetched, takes out sample, is utilized Universal testing machine detects mechanical property.
Experiment for same batch of composite solidpropellant using natural acceleration test of the present invention and storehouse storage test below Interpretation of result contrasts situation:
1st, acceleration
The result of the test of the result of the test of the embodiment of the present invention and storehouse storage sample is each done at ratio with initial value Manage (i.e. retai-nedntensile strength), be shown in Table 1.
1 storehouse of table is stored specimen test situation and is contrasted with test situation of the embodiment of the present invention
For 1 data of table, mapped with the maximum tensile strength retention rate to test period, as a result as shown in formula (1), formula (2):
PStorehouse=90.798e-0.0001T……………(1)
PThe present invention=91.186e-0.0007t……………(2)
In formula:PStorehouse--- storehouse stores the maximum tensile strength retention rate of sample aging T time, %;
PThe present invention--- the maximum tensile strength retention rate of aging t times of the embodiment of the present invention, %;
T--- storehouses store specimen test time, d;
T--- test periods of the embodiment of the present invention, d.
Since sample the maximum tensile strength retention rate must be not less than 52.77%.Storehouse is calculated according to formula (1), formula (2) respectively It is respectively 5427d, 781d that sample, which reaches critical usage time, in room storage sample, the embodiment of the present invention.Thus, obtain with tension Intensity is that the accelerated ratio that the embodiment of the present invention of judgment basis stores sample corresponding to storehouse is 7 times.
2nd, simulation
For storehouse storage sample, the maximum tensile strength retention rate number of sample different tests time of the embodiment of the present invention According to sorting respectively by its size is unified, the corresponding ordinal number of each data is its order, is each set to xStorehouse i, xI of the present invention, therefore basis The performance data size of 1 two kinds of test method tests of table arranges order respectively:
xStorehouse=(1,2,4,3,5,6)
xThe present invention=(1,2,3,4,5,6)
On this basis, order difference d is calculated according to formula (1)i
di=xStorehouse i-xI of the present invention……………(3)
Obtain storehouse storage specimen test, the embodiment of the present invention and correspond to the order difference of order and be:
D=(0,0,1, -1,0,0)
Rank correlation coefficient rho is calculated according to formula (4)s
In formula:di--- order is poor;
x1i--- the order of test performance data after storehouse storage specimen test;
x2i--- the order of test performance data after experiment of the embodiment of the present invention;
N --- reference sample group number.
Calculate rank correlation coefficient rhosAs a result it is 0.943, illustrates to have good correlation between two kinds of test methods, this Invention natural acceleration test can reproduce failure regularity of the solid propellant in actual storehouse storage sample well, and simulation is good It is good.

Claims (2)

  1. A kind of 1. method of composite solidpropellant natural acceleration test, it is characterised in that:Including rectangular test case, the experiment Case includes babinet(1)And case lid(2), the babinet(1)Side is equipped with forced ventilation cooling system(3), the babinet(1)It is exterior Equipped with Temperature and Humidity Control and data collecting system(4), the babinet(1)It is interior to be equipped with specimen mounting(5);The forced ventilation cooling system System(4)Including being arranged on babinet(1)Shutter on side wall(3-1)And return air hole, axis stream wind is equipped with the cavity outside the side wall Fan and motor, babinet(1)Bottom is equipped with air inlet;The Temperature and Humidity Control and data collecting system(4)Including temperature and humidity sensing Device and data acquisition and communication controller, the Temperature Humidity Sensor is from babinet(1)The air inlet of bottom enters babinet(1)It is interior; The Temperature Humidity Sensor is multiple and be dispersed in specimen mounting(4)Between;The babinet(1)Side wall be equipped with insulation Layer, the babinet(1)Inner surface spray black fluororesin paints, babinet(1)Outer surface sprays solar selective heat-absorbing paint; Concrete operations include the following steps:
    By chamber slant setting in the open air of tropical marine atmospheres environment, the inclined angle is local latitude angle, and will Babinet(1)Ground connection;
    2)The specimen mounting composite solidpropellant sample of sealing being put into chamber(4)On, set maximum temperature and threshold value;
    3)Open Temperature and Humidity Control and data collecting system(4)Record temperature, the humidity change of chamber inner air, control cabinet Body(1)Interior temperature;Open forced ventilation cooling system(3)The change of control cabinet body temperature;
    4)Discharging.
  2. 2. the method for composite solidpropellant natural acceleration test as claimed in claim 1, it is characterised in that:Step 3)In, Specifically, open Temperature and Humidity Control and data collecting system(4)Temperature, the humidity of air in record chamber change and pass through Motor and aerofoil fan control to adjust babinet(1)Interior temperature;Work as babinet(1)Interior each point temperature uniformity meets or exceeds setting During temperature range, babinet(1)Circulating ventilation is radiated in inner air, i.e., motor works, and is driven centrifugation blade to rotate and is produced air quantity, By shutter outlet air, by the return air hole return air under shutter, air inlet and aerofoil fan are closed at this time;Work as babinet(1)The upper limit When temperature arrival or the maximum temperature more than setting, babinet(1)Outer circulation is aeration-cooling, i.e., aerofoil fan work, force from into Air port sucks outside air, and is radiated by aerofoil fan, realizes babinet(1)Interior cooling.
CN201510716538.7A 2015-10-29 2015-10-29 A kind of composite solidpropellant natural acceleration test device and method Active CN105403474B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510716538.7A CN105403474B (en) 2015-10-29 2015-10-29 A kind of composite solidpropellant natural acceleration test device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510716538.7A CN105403474B (en) 2015-10-29 2015-10-29 A kind of composite solidpropellant natural acceleration test device and method

Publications (2)

Publication Number Publication Date
CN105403474A CN105403474A (en) 2016-03-16
CN105403474B true CN105403474B (en) 2018-05-11

Family

ID=55469099

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510716538.7A Active CN105403474B (en) 2015-10-29 2015-10-29 A kind of composite solidpropellant natural acceleration test device and method

Country Status (1)

Country Link
CN (1) CN105403474B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106841530A (en) * 2017-03-17 2017-06-13 中国人民解放军海军航空工程学院 Solid engines state monitoring apparatus based on chemical atmosphere sensor
CN109738225A (en) * 2018-11-27 2019-05-10 福建福清核电有限公司 A kind of npp safety shell concrete keeps sample method
CN109580465A (en) * 2018-12-12 2019-04-05 中国兵器工业第五九研究所 A kind of natural environment acceleration test apparatus and its application method for strengthening photo-thermal effect
CN110155365A (en) * 2019-05-13 2019-08-23 中国电子产品可靠性与环境试验研究所((工业和信息化部电子第五研究所)(中国赛宝实验室)) For the fixed device of unmanned plane natural surroundings exposure test
CN111156103B (en) * 2019-07-01 2023-11-14 中国人民解放军96901部队24分队 Acceleration method and device for solid rocket engine rolling storage process
CN111521491B (en) * 2020-04-22 2023-04-18 中国人民解放军国防科技大学 Temperature-strain high-flux aging test device
CN112595656B (en) * 2020-12-09 2022-05-27 中国兵器工业第五九研究所 Testing device and evaluation method for adaptability of explosive device long-storage environment for bomb

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1479088A (en) * 2002-08-29 2004-03-03 重庆工学院 Suntracing reflection condensing condensing solarization experimental machine and used solar light tracing method
CN101487789A (en) * 2009-02-11 2009-07-22 中国兵器工业第五九研究所 Test method and apparatus for natural environment of electronic product
CN101672765A (en) * 2009-08-18 2010-03-17 中国兵器工业第五九研究所 Testing box for accelerated environment
CN101718676A (en) * 2009-11-24 2010-06-02 中国兵器工业第五九研究所 Atmospheric environment comprehensive natural acceleration test system
CN102841051A (en) * 2012-09-07 2012-12-26 中国兵器工业第五九研究所 Multi-factor comprehensive simulation accelerated testing device for climatic environment
CN204583214U (en) * 2015-04-15 2015-08-26 东莞市万洋环境科技有限公司 A kind of elevated temperature thermal cycles burn-in chamber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1479088A (en) * 2002-08-29 2004-03-03 重庆工学院 Suntracing reflection condensing condensing solarization experimental machine and used solar light tracing method
CN101487789A (en) * 2009-02-11 2009-07-22 中国兵器工业第五九研究所 Test method and apparatus for natural environment of electronic product
CN101672765A (en) * 2009-08-18 2010-03-17 中国兵器工业第五九研究所 Testing box for accelerated environment
CN101718676A (en) * 2009-11-24 2010-06-02 中国兵器工业第五九研究所 Atmospheric environment comprehensive natural acceleration test system
CN102841051A (en) * 2012-09-07 2012-12-26 中国兵器工业第五九研究所 Multi-factor comprehensive simulation accelerated testing device for climatic environment
CN204583214U (en) * 2015-04-15 2015-08-26 东莞市万洋环境科技有限公司 A kind of elevated temperature thermal cycles burn-in chamber

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
3种高分子材料自然环境多角度暴露对比试验;易平;《表面技术》;20070430;第18-20页 *
材料天然环境曝晒试验曝晒架角度的选定;莫仁陶;《环境条件与试验》;19871231;第19-21页 *

Also Published As

Publication number Publication date
CN105403474A (en) 2016-03-16

Similar Documents

Publication Publication Date Title
CN105403474B (en) A kind of composite solidpropellant natural acceleration test device and method
CN105911091B (en) Experimental rig and method for thermo parameters method characteristic research under temperature-acceleration environment
WO2019127308A1 (en) Method and system for detecting weather resistance of photovoltaic assembly
CN109946634A (en) A kind of lithium ion battery thermal runaway environmental simulation device and method
CN108438261B (en) Device and method for testing aerodynamic characteristics of single rotor system of rotary-wing Mars unmanned aerial vehicle
CN206311481U (en) Bicyclic border fatigue tester
CN105651681B (en) Thin-film solar cells natural ageing test method and apparatus
WO2019127307A1 (en) Method and system for detecting mechanical resistance of photovoltaic assembly
CN106323856A (en) Method for evaluating weather resistance of automotive interior decorations by glass lower-temperature-limit test chambers
CN108732203B (en) Method for detecting flatulence degree of lithium titanate battery
CN109557286B (en) Durability test and service life evaluation method for electric heating windshield transparent part for helicopter
He et al. Combustion characteristics and quantitative determination of energy release of Epoxy-Al active materials projectile hypervelocity impact steel targets in vacuum environment
US20190199285A1 (en) Method and system for testing weather resistance of photovoltaic module
CN107768753A (en) A kind of lithium battery intelligent air leak tester
CN110815691A (en) Preparation method of organic silicon foaming gasket for power battery box body packaging
CN101487789B (en) Test method and apparatus for natural environment of electronic product
CN210097700U (en) Temperature impact test box
CN104181062A (en) Test method for solidity of lamp coating
CN206114490U (en) Novel accurate japanning ageing testing device
CN205911382U (en) A soak device for evaluation and test of lithium ion battery subassembly performance
CN207380080U (en) A kind of visual device for testing half-cell constant temperature
CN207123463U (en) Three casees heat-storage type cold-hot impact testers
CN115420855B (en) Method for testing running compatibility of battery cells in fluorinated solution
CN106885766B (en) External thermal insulation system weather resistance detection machine
CN114019263A (en) Battery thermal runaway experimental device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address

Address after: 400039 Chongqing Jiulongpo Yuzhou Road No. 33

Patentee after: NO.59 Institute of China Ordnance Industry

Country or region after: China

Address before: 400039 Chongqing Jiulongpo Shiqiaopu Yuzhou Road No. 33

Patentee before: NO 59 Research Institute OF CHINA ORDNACE INDUSTRY

Country or region before: China