CN108152700A - A kind of LED aging equipments and its LED aging methods - Google Patents
A kind of LED aging equipments and its LED aging methods Download PDFInfo
- Publication number
- CN108152700A CN108152700A CN201711460232.5A CN201711460232A CN108152700A CN 108152700 A CN108152700 A CN 108152700A CN 201711460232 A CN201711460232 A CN 201711460232A CN 108152700 A CN108152700 A CN 108152700A
- Authority
- CN
- China
- Prior art keywords
- temperature
- temperature control
- control plate
- led
- water tank
- 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.)
- Pending
Links
Classifications
-
- 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
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2601—Apparatus or methods therefor
-
- 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
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2642—Testing semiconductor operation lifetime or reliability, e.g. by accelerated life tests
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
Abstract
A kind of LED aging equipments, including testboard and controller, temperature control plate is equipped on testboard, the fixture for placing LED lamp bead is equipped on temperature control plate, second temperature monitor is equipped on fixture, the temperature control plate includes the cavity of liquid storage, the controller is by controlling the temperature of liquid in temperature control plate to control the temperature of LED lamp bead chip, in the invention, the pin temperature of the chip of LED lamp bead is controlled by changing the temperature of temperature control plate, so as to which the temperature of LED lamp bead cathode closest to LED chip accurately to LED lamp bead in ageing process carries out management and control, the experiment does not need to carry out in thermostatic box, the aging conditions of LED lamp bead can directly be observed.
Description
Technical field
The present invention relates to a kind of LED aging equipments and its LED aging methods.
Background technology
The high temperature ageing experiment of LED lamp bead at present is by controlling the environment temperature in experimental box and then LED being led to
Voltage ageing, but LED can generate heat when being powered and generate Wen Sheng, and in this case, the junction temperature that often will appear LED exceeds
The maximum temperature that the LED product that manufacturer provides can be born, can not accurate management and control LED chip temperature.
Invention content
The technical problem to be solved in the present invention is to provide one kind can in LED burn-in tests accurate management and control LED light bead core
Piece cathode is closest to the LED aging equipments of the temperature of LED chip.
In order to solve the above-mentioned technical problem, the present invention includes testboard and controller, and temperature control plate is equipped on testboard,
Temperature control plate is equipped with the fixture for placing LED lamp bead, and second temperature monitor is equipped on fixture, and the temperature control plate includes storage
The cavity of liquid, the controller is by controlling the temperature of liquid in temperature control plate to control the temperature of LED lamp bead chip.
As a further improvement on the present invention, water inlet pipe and outlet pipe are equipped in temperature control plate, between water inlet pipe and outlet pipe
Equipped with heating and refrigerating plant.
As a further improvement on the present invention, the heating and refrigerating plant include water tank, be equipped in water tank heating tube and
Refrigerator pipes are equipped with the first temperature monitor in the water outlet of water tank.
As a further improvement on the present invention, the heating and refrigerating plant include heating water tank and refrigeration water tank, heating
Heating tube is equipped in water tank, is equipped with refrigerator pipes in refrigeration water tank, the outlet pipe of heating water tank and refrigeration water tank is equipped with water mixing valve,
Flow divider is equipped between temperature control plate water outlet and heating water tank and refrigeration water tank water inlet pipe, first is equipped in the water outlet of water mixing valve
Temperature monitor.
As a further improvement on the present invention, the distance between second temperature monitor and LED lamp bead cathode are less than second
The distance between temperature monitor and LED lamp bead anode.
As a further improvement on the present invention, the second temperature monitor is electric thermo-couple temperature monitor.
Because the pin of temperature control plate and the chip of LED lamp bead on fixture is in direct contact, by changing temperature control plate in the invention
Temperature control the pin temperature of the chip of LED lamp bead, so as to the accurate LED lamp bead to LED lamp bead in ageing process
Temperature closest to LED chip carries out management and control, which does not need to carry out in thermostatic box, can directly observe LED lamp bead
Aging conditions.
The invention also includes a kind of LED aging methods, include the following steps：
A, LED lamp bead is placed on temperature control plate, energization aging is carried out to LED lamp bead by energization interface；
B, whether the difference of second temperature monitor monitoring LED lamp bead cathode temperature and the temperature of LED chip is in ± A DEG C range
It is interior；
If C, the difference of LED lamp bead cathode temperature and the temperature of LED chip is more than A DEG C of setting value, temperature is controlled by controller
It controls liquid in plate to cool down so as to which temperature control plate be made to cool down, and passes through second temperature monitor monitoring LED lamp bead cathode temperature and LED core
Whether the difference of the temperature of piece is in the range of ± A DEG C；
If D, the difference of LED lamp bead cathode temperature and the temperature of LED chip is less than A DEG C of setting value, temperature is controlled by controller
It controls liquid in plate to heat up so as to which temperature control plate be made to heat up, and passes through second temperature monitor monitoring LED lamp bead cathode temperature and LED core
Whether the difference of the temperature of piece is in the range of ± A DEG C；
E, the difference of guarantee LED lamp bead cathode temperature and the temperature of LED chip is in the range of ± A DEG C, and carries out lasting temperature control
Aging.
As a further improvement on the present invention, in step B, C, D and E, the value of A is 2.
As a further improvement on the present invention, in step C, liquid in temperature control plate is controlled to cool down so as to make by controller
Temperature control plate cools down：Refrigerator pipes work is controlled to be cooled down to liquid in water tank so that temperature control plate drops by controller
Temperature；In step E, the heating temperature control plate heating for controlling the liquid in temperature control plate by controller is specially：Pass through controller
Control heating tube work heats liquid in water tank so that temperature control plate heats up.
As a further improvement on the present invention, in step C, liquid in temperature control plate is controlled to cool down so as to make temperature by controller
Control plate, which cools down, is specially：By controller control refrigerator pipes work cool down to liquid in refrigeration water tank, then simultaneously first
Temperature monitor detects refrigeration water tank and the temperature control water mixing valve of heating water tank water outlet liquid in pipe cools down to temperature control plate；
In step E, the heating temperature control plate heating for controlling the liquid in temperature control plate by controller is specially：It is controlled by controller
Heating tube work heats up to liquid in heating water tank, and then the first temperature monitor detects refrigeration water tank and heating water simultaneously
The temperature control water mixing valve of case water outlet liquid in pipe carries out temperature control plate drop temperature control plate heating.
Description of the drawings
Carry out the further details of explanation to the present invention with reference to the accompanying drawings and detailed description.
Fig. 1 is the structure diagram of the first embodiment of the present invention.
Fig. 2 is the structure diagram of the second embodiment of the present invention.
Fig. 3 is the experiment process figure of the present invention.
Specific embodiment
First embodiment：
As shown in Figure 1, the present invention includes testboard 1 and controller, and temperature control plate 2 is equipped on testboard 1, is set on temperature control plate 2
It is useful for placing the fixture 3 of LED lamp bead, second temperature monitor 12 is equipped on fixture 3, the temperature control plate 2 includes liquid storage
Cavity, temperature control plate 2 is interior to be equipped with water inlet pipe 4 and outlet pipe 5, and heating and refrigerating plant, institute are equipped between water inlet pipe 4 and outlet pipe 5
It states heating and refrigerating plant includes water tank 6, be equipped with heating tube 7 and refrigerator pipes 8 in water tank 6, first is equipped in the water outlet of water tank 6
Temperature monitor, the distance between second temperature monitor 12 and LED lamp bead cathode are less than second temperature monitor 12 and LED light
The distance between pearl anode, the second temperature monitor 12 be electric thermo-couple temperature monitor, the controller respectively with heating
Pipe 7, refrigerator pipes 8, the first temperature monitor, second temperature monitor 12 connect.
Second embodiment：
As shown in Figure 2, the present invention includes testboard 1 and controller, and temperature control plate 2 is equipped on testboard 1, is set on temperature control plate 2
It is useful for placing the fixture 3 of LED lamp bead, second temperature monitor 12 is equipped on fixture 3, the temperature control plate 2 includes liquid storage
Cavity, temperature control plate 2 is interior to be equipped with water inlet pipe 4 and outlet pipe 5, and heating and refrigerating plant, institute are equipped between water inlet pipe 4 and outlet pipe 5
It states heating and refrigerating plant and includes heating water tank 9 and refrigeration water tank 10, be equipped with heating tube 7 in heating water tank 9, in refrigeration water tank 10
Equipped with refrigerator pipes 8, the outlet pipe of heating water tank 9 and refrigeration water tank 10 is equipped with water mixing valve 11, in 2 water outlet of temperature control plate and heating water
Flow divider 12 is equipped between 10 water inlet pipe 4 of case 9 and refrigeration water tank, the first temperature monitor is equipped in the water outlet of water mixing valve 11,
The distance between second temperature monitor 12 and LED lamp bead cathode are less than between second temperature monitor 12 and LED lamp bead anode
Distance, the second temperature monitor 12 be electric thermo-couple temperature monitor, the controller respectively with heating tube 7, refrigerator pipes
8th, the first temperature monitor, second temperature monitor 12, water mixing valve 11 connect.
The high temperature ageing experiment of LED lamp bead at present is by controlling the environment temperature in experimental box and then LED being led to
Voltage ageing, but LED can generate heat when being powered and generate Wen Sheng, in this case, often will appear the junction temperature of chip of LED
The maximum temperature that the LED product provided beyond manufacturer can be born.Tjmax refers to the chip that the LED product that manufacturer provides can be born
Maximum junction temperature because LED chip is packaged in inside LED lamp bead product, can not directly measure LED core during aging
The junction temperature of piece, Ts refer to that LED lamp bead cathode closest to the temperature of LED chip, can be defaulted as the aging junction temperature of product.Ta refers to
Environment temperature residing in ageing process LED.According to the characteristic of LED product：Ts=Ta+ thermal resistance X power；If using control
The aging techniques of environment temperature just will appear two kinds of situations of Tjmax >=Ts or Tjmax≤Ts, as Tjmax≤Ts, illustrate LED
The aging junction temperature of product has had exceeded the use specification that manufacturer provides, and influences properties of product.In the invention, by changing temperature control
The temperature of plate 22 controls the pin temperature of the chip of LED lamp bead, so as to the accurate LED to LED lamp bead in ageing process
The temperature of lamp bead cathode closest to LED chip carries out management and control, which does not need to carry out in thermostatic box, can directly observe
The aging conditions of LED lamp bead.Observation temperature value can be facilitated by display module.First temperature monitor can conveniently be learnt
The leaving water temperature of water tank compares control, to ensure LED chip by the numerical value of the first temperature monitor and second temperature monitor
Aging junction temperature temperature manufacturer provide using in specification limit, while when second temperature monitor damages, the first temperature
Monitor is also ensured that user can obtain the temperature of temperature control plate by the leaving water temperature of water tank, completes burn-in test.Fig. 3
Experiment process figure for the present invention.
The invention also includes a kind of LED aging methods, structure according to first embodiment includes the following steps：
A, LED lamp bead is placed on temperature control plate, energization aging is carried out to LED lamp bead by energization interface；
B, whether the difference of second temperature monitor monitoring LED lamp bead cathode temperature and the temperature of LED chip is in ± 2 DEG C of ranges
It is interior；
If C, the difference of LED lamp bead cathode temperature and the temperature of LED chip is more than 2 DEG C of setting value, is controlled and made by controller
Cold plumber makees to cool down to liquid in water tank so that temperature control plate cools down, and passes through second temperature monitor monitoring LED light
Whether the difference of pearl cathode temperature and the temperature of LED chip is in the range of ± 2 DEG C；
If D, the difference of LED lamp bead cathode temperature and the temperature of LED chip is less than 2 DEG C of setting value, added by controller control
Liquid in water tank is heated for heat pipe work so that temperature control plate heats up, and passes through second temperature monitor monitoring LED light
Whether the difference of pearl cathode temperature and the temperature of LED chip is in the range of ± 2 DEG C；
E, the difference of guarantee LED lamp bead cathode temperature and the temperature of LED chip is in the range of ± 2 DEG C, and carries out lasting temperature control
Aging.
Structure according to second embodiment, includes the following steps：
A, LED lamp bead is placed on temperature control plate, energization aging is carried out to LED lamp bead by energization interface；
B, whether the difference of second temperature monitor monitoring LED lamp bead cathode temperature and the temperature of LED chip is in ± 2 DEG C of ranges
It is interior；
If C, the difference of LED lamp bead cathode temperature and the temperature of LED chip is more than 2 DEG C of setting value, is controlled and made by controller
Cold plumber makees to cool down to liquid in refrigeration water tank, and then the first temperature monitor detects refrigeration water tank and heating water tank simultaneously
The temperature control water mixing valve of water outlet liquid in pipe cools down to temperature control plate, and passes through second temperature monitor monitoring LED lamp bead
Whether the difference of cathode temperature and the temperature of LED chip is in the range of ± 2 DEG C；
If D, the difference of LED lamp bead cathode temperature and the temperature of LED chip is less than 2 DEG C of setting value, added by controller control
Heat pipe work heats up to liquid in heating water tank, and then the first temperature monitor detects refrigeration water tank and heating water tank simultaneously
The temperature control water mixing valve for being discharged liquid in pipe carries out temperature control plate drop temperature control plate heating, and pass through second temperature monitor and monitor
Whether the difference of LED lamp bead cathode temperature and the temperature of LED chip is in the range of ± 2 DEG C；
E, the difference of guarantee LED lamp bead cathode temperature and the temperature of LED chip is in the range of ± 2 DEG C, and carries out lasting temperature control
Aging.
Claims (10)
1. a kind of LED aging equipments, it is characterised in that：Including testboard and controller, temperature control plate is equipped on testboard, in temperature
Control plate is equipped with the fixture for placing LED lamp bead, and second temperature monitor is equipped on fixture, and the temperature control plate includes liquid storage
Cavity, the controller by control liquid in temperature control plate temperature control LED lamp bead chip temperature.
2. LED aging equipments as described in claim 1, it is characterised in that：Water inlet pipe and outlet pipe, water inlet are equipped in temperature control plate
Heating and refrigerating plant are equipped between pipe and outlet pipe.
3. LED aging equipments as described in claim 2, it is characterised in that：The heating and refrigerating plant include water tank, water tank
It is interior to be equipped with heating tube and refrigerator pipes, it is equipped with the first temperature monitor in the water outlet of water tank.
4. LED aging equipments as described in claim 2, it is characterised in that：The heating and refrigerating plant include heating water tank
And refrigeration water tank, heating water tank is interior to be equipped with heating tube, and refrigerator pipes, the water outlet of heating water tank and refrigeration water tank are equipped in refrigeration water tank
Pipe is equipped with water mixing valve, flow divider is equipped between temperature control plate water outlet and heating water tank and refrigeration water tank water inlet pipe, in water mixing valve
Water outlet be equipped with the first temperature monitor.
5. LED aging equipments as described in claim 1, it is characterised in that：Between second temperature monitor and LED lamp bead cathode
Distance be less than the distance between second temperature monitor and LED lamp bead anode.
6. LED aging equipments as described in claim 1, it is characterised in that：The second temperature monitor is electric thermo-couple temperature
Monitor.
7. a kind of LED aging methods, which is characterized in that include the following steps：
A, LED lamp bead is placed on temperature control plate, energization aging is carried out to LED lamp bead by energization interface；
B, whether the difference of second temperature monitor monitoring LED lamp bead cathode temperature and the temperature of LED chip is in ± A DEG C range
It is interior；
If C, the difference of LED lamp bead cathode temperature and the temperature of LED chip is more than A DEG C of setting value, temperature is controlled by controller
It controls liquid in plate to cool down so as to which temperature control plate be made to cool down, and passes through second temperature monitor monitoring LED lamp bead cathode temperature and LED core
Whether the difference of the temperature of piece is in the range of ± A DEG C；
If D, the difference of LED lamp bead cathode temperature and the temperature of LED chip is less than A DEG C of setting value, temperature is controlled by controller
It controls liquid in plate to heat up so as to which temperature control plate be made to heat up, and passes through second temperature monitor monitoring LED lamp bead cathode temperature and LED core
Whether the difference of the temperature of piece is in the range of ± A DEG C；
E, the difference of guarantee LED lamp bead cathode temperature and the temperature of LED chip is in the range of ± A DEG C, and carries out lasting temperature control
Aging.
8. LED aging methods as described in claim 7, it is characterised in that：In step B, C, D and E, the value of A is 2.
9. LED aging methods as described in claim 7, it is characterised in that：In step C, temperature control plate is controlled by controller
Interior liquid cools down is specially so as to which temperature control plate be made to cool down：Refrigerator pipes work is controlled to cool down liquid in water tank by controller
So that temperature control plate cools down；In step E, the heating temperature control plate of the liquid in temperature control plate is controlled to heat up by controller and had
Body is：Heating tube work is controlled to be heated to liquid in water tank so that temperature control plate heats up by controller.
10. LED aging methods as described in claim 7, it is characterised in that：In step C, temperature control plate is controlled by controller
Interior liquid cools down is specially so as to which temperature control plate be made to cool down：Refrigerator pipes work is controlled to carry out liquid in refrigeration water tank by controller
Cooling, then the first temperature monitor detects refrigeration water tank simultaneously and heating water tank is discharged the temperature control water mixing valve of liquid in pipe
Cool down to temperature control plate；In step E, the heating temperature control plate of the liquid in temperature control plate is controlled to heat up by controller specific
For：Heating tube work is controlled to heat up liquid in heating water tank by controller, then the first temperature monitor inspection simultaneously
The temperature control water mixing valve for surveying refrigeration water tank and heating water tank water outlet liquid in pipe carries out temperature control plate drop temperature control plate heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460232.5A CN108152700A (en) | 2017-12-28 | 2017-12-28 | A kind of LED aging equipments and its LED aging methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460232.5A CN108152700A (en) | 2017-12-28 | 2017-12-28 | A kind of LED aging equipments and its LED aging methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108152700A true CN108152700A (en) | 2018-06-12 |
Family
ID=62462695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711460232.5A Pending CN108152700A (en) | 2017-12-28 | 2017-12-28 | A kind of LED aging equipments and its LED aging methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108152700A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488796A (en) * | 2019-08-14 | 2019-11-22 | 武汉克莱美特环境设备有限公司 | A kind of liquid-cooling heat radiation circuit board integrated environment simulation box |
| CN111007894A (en) * | 2019-12-17 | 2020-04-14 | 山东华芯半导体有限公司 | Method for accurately controlling temperature in NANDFlash characteristic test |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004029468A (en) * | 2002-06-26 | 2004-01-29 | Taiwan Lite On Electronics Inc | Method of manufacturing color section display unit |
| CN101164378A (en) * | 2005-04-19 | 2008-04-16 | 电灯专利信托有限公司 | Led module and led lightning unit with a plurality of led modules |
| CN101660696A (en) * | 2009-07-20 | 2010-03-03 | 艾迪光电（杭州）有限公司 | Large power LED square illuminating lamp |
| CN201450642U (en) * | 2009-07-29 | 2010-05-05 | 广州复旦奥特科技股份有限公司 | LED chip temperature controller and LED lamp lighting system |
| CN201514941U (en) * | 2009-09-09 | 2010-06-23 | 贵州振华风光半导体有限公司 | Hybrid integrated circuit with controllable working temperature |
| CN102305673A (en) * | 2011-05-25 | 2012-01-04 | 武汉长江半导体照明科技股份有限公司 | Method for measuring and computing junction temperature of light emitting diode (LED) light source chip and special device |
| US20140176178A1 (en) * | 2012-12-25 | 2014-06-26 | Taiwan Power Testing Technology Co., Ltd. | Method for automatically sorting leds according to electrostatic resistance and system using the same |
| CN203934094U (en) * | 2014-05-06 | 2014-11-05 | 西安交通大学 | A kind of LED chip ageing test apparatus with excellent heat dispersion performance |
| CN205404081U (en) * | 2016-02-29 | 2016-07-27 | 倍科电子技术服务（深圳）有限公司 | Multilayer liquid cooling board that ages suitable for miniwatt LED lamp pearl |
-
2017
- 2017-12-28 CN CN201711460232.5A patent/CN108152700A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004029468A (en) * | 2002-06-26 | 2004-01-29 | Taiwan Lite On Electronics Inc | Method of manufacturing color section display unit |
| CN101164378A (en) * | 2005-04-19 | 2008-04-16 | 电灯专利信托有限公司 | Led module and led lightning unit with a plurality of led modules |
| CN101660696A (en) * | 2009-07-20 | 2010-03-03 | 艾迪光电（杭州）有限公司 | Large power LED square illuminating lamp |
| CN201450642U (en) * | 2009-07-29 | 2010-05-05 | 广州复旦奥特科技股份有限公司 | LED chip temperature controller and LED lamp lighting system |
| CN201514941U (en) * | 2009-09-09 | 2010-06-23 | 贵州振华风光半导体有限公司 | Hybrid integrated circuit with controllable working temperature |
| CN102305673A (en) * | 2011-05-25 | 2012-01-04 | 武汉长江半导体照明科技股份有限公司 | Method for measuring and computing junction temperature of light emitting diode (LED) light source chip and special device |
| US20140176178A1 (en) * | 2012-12-25 | 2014-06-26 | Taiwan Power Testing Technology Co., Ltd. | Method for automatically sorting leds according to electrostatic resistance and system using the same |
| CN203934094U (en) * | 2014-05-06 | 2014-11-05 | 西安交通大学 | A kind of LED chip ageing test apparatus with excellent heat dispersion performance |
| CN205404081U (en) * | 2016-02-29 | 2016-07-27 | 倍科电子技术服务（深圳）有限公司 | Multilayer liquid cooling board that ages suitable for miniwatt LED lamp pearl |
Non-Patent Citations (1)
| Title |
|---|
| 文尚胜: "《半导体照明技术》", 31 December 2013, 华南理工大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488796A (en) * | 2019-08-14 | 2019-11-22 | 武汉克莱美特环境设备有限公司 | A kind of liquid-cooling heat radiation circuit board integrated environment simulation box |
| CN111007894A (en) * | 2019-12-17 | 2020-04-14 | 山东华芯半导体有限公司 | Method for accurately controlling temperature in NANDFlash characteristic test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9983259B2 (en) | Dual loop type temperature control module and electronic device testing apparatus provided with the same | |
| US20130285686A1 (en) | Systems and Methods for Thermal Control | |
| CN103941778B (en) | The temperature control system of micro constant-temperature case and method | |
| CN108152700A (en) | A kind of LED aging equipments and its LED aging methods | |
| KR20180036159A (en) | Testing device and the method thereof that the water's temperature change having gradient to time can be carried out | |
| CN102692113A (en) | Humidity adjusting method and device for semiconductor refrigeration box | |
| CN104029921B (en) | Micro constant-temperature case | |
| CN115686105A (en) | Closed environment temperature control device and method | |
| CN104390774A (en) | Method and device for testing high-temperature opening pressure of anti-explosion valve of secondary battery | |
| AU2018312662B2 (en) | Actuating mechanism control method for glass plate tempering process | |
| US20120103967A1 (en) | Burn-in oven having inverter fan and heat regulator | |
| CN104792197A (en) | High-efficiency cooling system | |
| CN209979700U (en) | Power device or module aging temperature control clamp | |
| CN114281127B (en) | Reagent card incubation system, reagent card incubation method and storage medium | |
| CN102513172A (en) | Double-bath multi-mode coordinated temperature control thermostatic bath | |
| CN104977245A (en) | Environmental test device | |
| CN104331110A (en) | Greenhouse temperature adjusting method based on semiconductor temperature control system | |
| KR101681493B1 (en) | Suscepter and temperature variable apparatus of susceptor | |
| CN204964347U (en) | Environmental testing apparatus | |
| JP6320897B2 (en) | Temperature control method | |
| CN111624501A (en) | Constant temperature box for constant temperature charging and discharging test of power battery | |
| CN210834209U (en) | Test tool for calibrating heat management of water-cooled battery | |
| CN203976977U (en) | A kind of sapphire crystal growth cooling water system | |
| CN102886882A (en) | Low-temperature mold temperature controller | |
| CN207367079U (en) | Constant speed groove and constant speed groove constant speed cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |
|
| RJ01 | Rejection of invention patent application after publication |