CN100343969C - Single plate temperature circulation aging device and its aging method - Google Patents
Single plate temperature circulation aging device and its aging method Download PDFInfo
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- CN100343969C CN100343969C CNB2005100596190A CN200510059619A CN100343969C CN 100343969 C CN100343969 C CN 100343969C CN B2005100596190 A CNB2005100596190 A CN B2005100596190A CN 200510059619 A CN200510059619 A CN 200510059619A CN 100343969 C CN100343969 C CN 100343969C
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Abstract
The present invention relates to a single plate temperature circulation aging device and an aging method thereof. The single plate temperature circulation aging device mainly comprises an aging chamber, a temperature detector, a controller and a heat-exchanging device, wherein when an aging single plate is arranged in the aging chamber, the controller controls the heat-exchanging device according to the detection result of the temperature detector. The aging method mainly utilizes heat generated by the single plate to offer heat energy to the aging process; when temperatures are high, the heat-exchanging device is opened to cool down; when the temperatures are low, the present invention can be used for heating in an auxiliary way; the aging aim of temperature cycles can be realized by the repeat steps, and therefore, the present invention which keeps the advantages of aging of the temperature cycle has the advantages of simple structure, low cost, energy saving, etc.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to a kind of single plate temperature circulation aging device and aging method thereof.
Background technology
Unavoidably to be applied to circuit board, just veneer on the electric equipment.In the production process of veneer, be an important step that guarantees electric equipment quality and operate as normal to the check of veneer and test.Because in use its life cycle curve is as shown in Figure 1 for electronic devices and components and circuit single plate, its failure rate is worked as high in the preliminary phase of bringing into use, along with its failure rate of lengthening of service time obviously drops to a stable value, this time period is called " early failure period "; Next will not have significant change a long time internal fault rate, this time period is called " useful life period "; Along with the growth of service time, above after useful life, its failure rate can obviously rise, and this time period is called " consume phase ".Therefore veneer is being tested and test is gone to toward carrying out burn-in screen to veneer.Its objective is the crosspoint of finding out " early failure period " and " useful life period ", just screen a little.To eliminate at the veneer of " early failure period " generation fault.Guarantee the qualification rate of electric equipment.
The mode of burn-in screen mainly contains two kinds of methods:
The first, constant high temperature is aging
The mechanism that constant high temperature is aging is by extra heat effect being provided, forcing development of defects.The constant high temperature screening is the effective ways of separating out the electronic devices and components defective, and its screening degree of screening that is widely used in components and parts can be obtained by following formula:
Screening degree SS=1-exp[-0.0017 (R+0.6)
0.6T]
Poor (room temperature is generally got 25 ℃) of R-high-temperature temperature and room temperature;
The t-constant high temperature duration (h);
Usually constant high temperature is aging is at electric heating class of burn-in chamber external control thermoelectric device occurred frequently, utilizes the heat energy that produces to make the burn-in chamber class reach stationary temperature.And the air of excessive temperature is taken away by air exhauster etc.But this method does not recommend to be used for the screening of component level, as the screening to printed wiring board, unit or system.
The second, temperature cycles is aging
Temperature cycles burn-in screen mechanism is that alternately expansion and contraction make by sieve product generation thermal stress and strain, and thermal stress and strain will not aggravate when particularly the inner abutment material coefficient of expansion matches.This thermal stress and strain are in the fault location maximum, and CYCLIC LOADING makes defective grow up into fault.For example, there is the electroplating ventilating hole of crackle finally to split fully, causes open circuit.
The most influential to screening effect is range of temperature, rate temperature change and cycle-index, and its value is big more, and screening effect is remarkable more.Its screening degree can be obtained by following formula:
Screening degree SS=1-exp{-0.0017 (R+0.6)
0.6[In (e+V)]
3N}
R-range of temperature (TU-TL) ℃
The end of e-natural logrithm
The V-rate temperature change (℃/min)
The N-cycle-index
Though the mode mode more aging than constant high temperature that temperature cycles is aging is more suitable in the burin-in process to veneer, yet, the burn-in chamber of temperature cycles is because common needed space is bigger, and to finish temperature cycles more accurately at the appointed time, need the more gentle cooling system that adds, therefore, the structure of burn-in chamber is quite complicated, and costs an arm and a leg.Therefore, all be to adopt constant high temperature to wear out to carry out stress screening usually on produce; Be not difficult to find out,, then under the prerequisite of same screening degree, need more ageing time if adopt this mode to carry out stress screening; Perhaps in same ageing time, constant temperature is aging lower than the warm burn-in screen degree of circulation.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of single plate temperature circulation aging device and aging method thereof, to simplify veneer is carried out temperature cycles aging implement device and method, reduce and realize cost.The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of veneer temperature aging equipment, its structure comprises: aging chamber, temperature-detecting device, control device and heat-exchange device, wherein: described aging chamber is airtight chamber's body, and veneer to be aging is arranged in aging chamber, and be its energising, make it produce heat, thereby the temperature of aging chamber is raise; Described temperature-detecting device is connected with aging chamber and control device, is used to detect the temperature in the aging chamber, and offers control device; Described control device is connected with aging chamber, temperature-detecting device and heat-exchange device, and the temperature in the aging chamber that is used for detecting according to temperature-detecting device is controlled heat-exchange device and regulated the interior temperature of aging chamber, and the power supply of control veneer;
Described heat-exchange device is connected with aging chamber and control device, is used for the control according to control device, regulates the temperature of aging chamber.
Described a kind of veneer temperature aging equipment also comprises assisted heating device, and described assisted heating device is connected with control device, and is arranged in the aging chamber.
Described a kind of veneer temperature aging equipment also comprises ageing timer, and described ageing timer is connected with control device.
Described veneer is located on the aging equipment.
The present invention also provides a kind of veneer temperature aging method, comprising:
A, veneer to be aging is enclosed within the aging chamber, and is its energising;
B, temperature-detecting device detect the temperature in the aging chamber, and according to the temperature in the aging chamber, by the work of control device control heat-exchange device, the aging indoor temperature of order keeps a period of time and cyclical-transformation work respectively at the upper limit and the lower limit of aging temperature.
Described step B also comprises: B1, veneer energising back heating raise the temperature in the aging chamber;
B2 sets going up in limited time of aging temperature when the detected aging indoor temperature of temperature-detecting device reaches, age timer begins the actual ageing time of the upper limit is carried out timing, with timed unit control heat-exchange device, keep the interior temperature of aging chamber in the aging temperature higher limit;
B3, judge whether the actual ageing time of the upper limit arrives the upper limit ageing time of setting, if arrive, then finishes upper limit ageing process, carries out B4; Otherwise, continue execution in step B1;
B4, control device control heat-exchange device, temperature in the aging chamber is descended, when reaching the following of setting aging temperature, the detected aging indoor temperature of temperature-detecting device prescribes a time limit, age timer begins the actual ageing time of lower limit is carried out timing, with timed unit control heat-exchange device, keep the interior temperature of aging chamber in the aging temperature lower limit;
B5, judge that whether the actual ageing time of lower limit arrives the lower limit ageing time of setting, if arrive, then finishes the lower limit ageing process, execution in step B1; Otherwise, continue execution in step B4;
Described step B1 also comprises: when temperature can't reach predetermined aging ceiling temperature value within the predetermined time, then open assisted heating device, to carrying out assistant heating in the aging chamber.
The method that described a kind of veneer temperature is aging also comprises:
C, judge whether the ageing time set, then to finish ageing process if arrive, otherwise, execution in step A and step B continued.
Described step C comprises:
Ageing timer is set, when ageing timer is overtime, closes heat-exchange device and stop to be the veneer power supply by control device.
As seen from the above technical solution provided by the invention, the present invention utilizes the heating of veneer self to provide heat energy to ageing process.Open heat-exchange device and make its cooling when temperature is high, all right assistant heating when temperature is low so reaches the aging purpose of temperature cycles repeatedly, and is provided with assisted heating device, to guarantee the reliability of temperature cycles.Therefore, the present invention has not only kept the aging advantage of temperature cycles, also has simple structure, and price is lower, advantages such as energy savings.
Description of drawings
Fig. 1 is the life cycle curve chart of electronic component;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the process chart of method of the present invention.
Embodiment
Core of the present invention is by the heat that veneer self energising produces it to be carried out burin-in process, so that simplify the realization of burin-in process, and can guarantee the effect of burin-in process.
The main embodiment of the present invention as shown in Figure 2, a kind of veneer temperature aging equipment comprises: aging chamber, veneer, temperature-detecting device, control device and heat-exchange device, described veneer is arranged in aging chamber, temperature in the aging chamber that control device detects according to temperature-detecting device is controlled heat-exchange device and is regulated the temperature in the aging chamber and the power supply of control veneer.
Above-mentioned aging chamber is airtight chamber's body, and the space of described airtight chamber body adapts with the volume that the aging equipment of veneer is installed and gets final product, and adopts less airtight chamber's body space, can guarantee fast lifting temperature in the aging chamber; Simultaneously, airtight chamber body can so that aging chamber in temperature can maintain a stationary temperature value in the long period, and, when initially aging chamber being heated up, can be so that aging chamber can rise to predetermined temperature value fast.
Above-mentioned a kind of veneer temperature aging equipment also comprises assisted heating device, described assisted heating device is connected with control device, and be arranged in the aging chamber, be used for when the heat that relies on veneer self energising to produce can't make aging chamber reach predetermined temperature value fast, assisting hyperthermic treatment in the aging chamber.
Above-mentioned a kind of veneer temperature aging equipment also comprises ageing timer, described ageing timer is connected with control device, be used for the aging time of veneer is carried out timing, so that in to the burin-in process process of veneer, accurately control ageing time, to guarantee effect to the veneer burin-in process.
Described control device is used for control on the one hand and powers to veneer, also be used on the other hand whether working according to control heat-exchange device of the temperature value in the detected aging chamber of temperature-detecting device and assisted heating device, be specially: when aging indoor temperature is higher than predetermined temperature value, start heat-exchange device, to reduce the temperature in the aging chamber, when aging indoor temperature meets predetermined temperature value, then close heat-exchange device, so that the temperature in the aging chamber can maintain a constant value (i.e. Yu Ding temperature value), in addition, when aging indoor temperature is lower than predetermined temperature value, then start assisted heating device, with the temperature in the rising aging chamber.
Described temperature-detecting device mainly comprises a temperature sensor that is arranged in the aging chamber, by described temperature sensor, just can detect the temperature that obtains in the aging chamber.
Described heat-exchange device is when opening, can reduce the temperature in the aging chamber, this device can be a ventilation unit, by reducing temperature in the aging chamber with the aging chamber separate ventilation, this device also can be a cooling device, as carrying out cooling processing or the like by water circulation cooling device, the cooling device that passes through in the aging chamber carries out heat exchange, to reduce the temperature in the aging chamber.
Utilize above-mentioned veneer temperature aging equipment, the present invention also provides a kind of veneer temperature aging method, and the specific implementation of described method may further comprise the steps as shown in Figure 3:
Step 31: veneer to be aging is enclosed within the aging chamber, and is its energising; Ageing timer configures upper limit ageing time, lower limit ageing time and total ageing time simultaneously;
Step 32: control device control heat-exchange device, rely on veneer energising back self-heating, the temperature of aging chamber is raise; Aging total time of accumulative total;
Need to prove,, can open assisted heating device, to improve the speed that aging indoor temperature rises when temperature rises when slow;
Step 33: judge whether the detected aging indoor temperature of temperature-detecting device reaches the upper limit of setting aging temperature, in this way, execution in step 34; As denying execution in step 32;
Step 34: age timer begins the actual ageing time of calculating upper limit, with timed unit control heat-exchange device, keeps the interior temperature of aging chamber in the aging temperature higher limit; Aging total time of accumulative total;
Step 35: judge that whether the actual ageing time of the upper limit arrives the upper limit ageing time of setting, if arrive, then finishes upper limit ageing process, execution in step 36; Otherwise, continue execution in step 34;
Step 36: control device control heat-exchange device descends the temperature in the aging chamber; Aging total time of accumulative total;
Step 37: judge whether the detected aging indoor temperature of temperature-detecting device reaches the lower limit of setting aging temperature, in this way, execution in step 38; As denying execution in step 36;
Step 38: age timer begins to calculate the actual ageing time of lower limit, with timed unit control heat-exchange device, keeps the interior temperature of aging chamber in the aging temperature lower limit; Aging total time of accumulative total;
Step 39: judge that whether the actual ageing time of lower limit arrives the lower limit ageing time of setting, if arrive, then finishes the lower limit ageing process, execution in step 32; Otherwise, continue execution in step 38;
Step 310: adding up aging total time and overall ageing time relatively, as adding up and agingly reach overall ageing time total time, stopping ageing process.
In sum, the present invention has realized that the heat that produces based on veneer self energising realizes the burin-in process to it.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (9)
1, a kind of veneer temperature aging equipment is characterized in that, comprising: aging chamber, temperature-detecting device, control device and heat-exchange device, wherein:
Described aging chamber is airtight chamber's body, and veneer to be aging is arranged in aging chamber, and is its energising, makes it produce heat, thereby the temperature of aging chamber is raise;
Described temperature-detecting device is connected with aging chamber and control device, is used to detect the temperature in the aging chamber, and offers control device;
Described control device is connected with aging chamber, temperature-detecting device and heat-exchange device, and the temperature in the aging chamber that is used for detecting according to temperature-detecting device is controlled heat-exchange device and regulated the interior temperature of aging chamber, and the power supply of control veneer;
Described heat-exchange device is connected with aging chamber and control device, is used for the control according to control device, regulates the temperature of aging chamber.
2, a kind of veneer temperature aging equipment according to claim 1 is characterized in that also comprise assisted heating device, described assisted heating device is connected with control device, and is arranged in the aging chamber.
3, a kind of veneer temperature aging equipment according to claim 1 is characterized in that also comprise ageing timer, described ageing timer is connected with control device.
4, a kind of veneer temperature aging equipment according to claim 1 is characterized in that described veneer is located on the aging equipment.
5, a kind of veneer temperature aging method is characterized in that, comprising:
A, veneer to be aging is enclosed within the aging chamber, and is its energising;
B, temperature-detecting device detect the temperature in the aging chamber, and according to the temperature in the aging chamber, by the work of control device control heat-exchange device, the aging indoor temperature of order keeps a period of time and cyclical-transformation work respectively at the upper limit and the lower limit of aging temperature.
6, a kind of veneer temperature aging method according to claim 5 is characterized in that described step B also comprises:
B1, veneer energising back heating raise the temperature in the aging chamber;
B2,, the detected aging indoor temperature of temperature-detecting device sets going up in limited time of aging temperature when reaching, age timer begins the actual ageing time of the upper limit is carried out timing, with timed unit control heat-exchange device, keep the interior temperature of aging chamber in the aging temperature higher limit;
B3, judge whether the actual ageing time of the upper limit arrives the upper limit ageing time of setting, if arrive, then finishes upper limit ageing process, carries out B4; Otherwise, continue execution in step B1;
B4, control device control heat-exchange device, temperature in the aging chamber is descended, when reaching the following of setting aging temperature, the detected aging indoor temperature of temperature-detecting device prescribes a time limit, age timer begins the actual ageing time of lower limit is carried out timing, with timed unit control heat-exchange device, keep the interior temperature of aging chamber in the aging temperature lower limit;
B5, judge that whether the actual ageing time of lower limit arrives the lower limit ageing time of setting, if arrive, then finishes the lower limit ageing process, execution in step B1; Otherwise, continue execution in step B4;
7, a kind of veneer temperature aging method according to claim 6 is characterized in that described step B1 also comprises:
When temperature can't reach predetermined aging ceiling temperature value within the predetermined time, then open assisted heating device, to carrying out assistant heating in the aging chamber.
8, the method that wears out according to claim 5,6 or 7 described a kind of veneer temperature is characterized in that this method also comprises:
C, judge whether the ageing time set, then to finish ageing process if arrive, otherwise, execution in step A and step B continued.
9, a kind of veneer temperature aging method according to claim 8 is characterized in that described step C comprises:
Ageing timer is set, when ageing timer is overtime, closes heat-exchange device and stop to be the veneer power supply by control device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100596190A CN100343969C (en) | 2005-03-29 | 2005-03-29 | Single plate temperature circulation aging device and its aging method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100596190A CN100343969C (en) | 2005-03-29 | 2005-03-29 | Single plate temperature circulation aging device and its aging method |
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| CN1841692A CN1841692A (en) | 2006-10-04 |
| CN100343969C true CN100343969C (en) | 2007-10-17 |
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| CNB2005100596190A Expired - Fee Related CN100343969C (en) | 2005-03-29 | 2005-03-29 | Single plate temperature circulation aging device and its aging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103335528A (en) * | 2013-06-16 | 2013-10-02 | 苏州工业园区欣隆电热仪器有限公司 | Heat recovery system for burn-in room |
| CN106771693A (en) * | 2015-11-20 | 2017-05-31 | 神讯电脑(昆山)有限公司 | Aging Auto-Test System and method |
| CN108535172B (en) * | 2018-03-28 | 2021-03-16 | 广东电网有限责任公司广州供电局 | Thermal aging test device and thermal aging test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629039A (en) * | 1985-07-04 | 1987-01-17 | Bridgestone Corp | Suspension bush |
| JP2000047519A (en) * | 1998-07-24 | 2000-02-18 | Mita Ind Co Ltd | Image forming device |
| CN1592182A (en) * | 2003-08-30 | 2005-03-09 | 华为技术有限公司 | Method for measuring ageing link of single board |
-
2005
- 2005-03-29 CN CNB2005100596190A patent/CN100343969C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629039A (en) * | 1985-07-04 | 1987-01-17 | Bridgestone Corp | Suspension bush |
| JP2000047519A (en) * | 1998-07-24 | 2000-02-18 | Mita Ind Co Ltd | Image forming device |
| CN1592182A (en) * | 2003-08-30 | 2005-03-09 | 华为技术有限公司 | Method for measuring ageing link of single board |
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| CN1841692A (en) | 2006-10-04 |
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Assignee: Shenzhen Security Testing Technology Co., Ltd. Assignor: Huawei Technologies Co., Ltd. Contract record no.: 2010440020244 Denomination of invention: Single plate temperature circulation aging device and its aging method Granted publication date: 20071017 License type: Exclusive License Open date: 20061004 Record date: 20101229 |
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Granted publication date: 20071017 Termination date: 20160329 |