CN204649660U - Heat Conduction Material heat radiation power tester - Google Patents
Heat Conduction Material heat radiation power tester Download PDFInfo
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- CN204649660U CN204649660U CN201520405935.8U CN201520405935U CN204649660U CN 204649660 U CN204649660 U CN 204649660U CN 201520405935 U CN201520405935 U CN 201520405935U CN 204649660 U CN204649660 U CN 204649660U
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Abstract
The utility model relates to testing tool technical field, refer in particular to Heat Conduction Material heat radiation power tester, include casing, thin slice Heat Conduction Material, box house is provided with microprocessor, Switching Power Supply, casing upper surface is provided with constant-temperature PTC thermal resistor, back up pad, display module, the two ends of constant-temperature PTC thermal resistor respectively with the input end of Switching Power Supply, output terminal electrical connection forms resistance circuit, be in series with current sensor in resistance circuit and be parallel with voltage sensor, temperature sensor is provided with bottom constant-temperature PTC thermal resistor, the utility model utilizes the characteristic that constant-temperature PTC thermal resistor body temperature is constant, constant-temperature PTC thermal resistor power input depends on resistive surface heat losses speed, the heat dispersion of material can be reflected intuitively with the difference of the power input of PTC element time unloaded by the power input of PTC element during subsides thin slice Heat Conduction Material, test result is accurate.
Description
technical field:
The utility model relates to testing tool technical field, refers in particular to Heat Conduction Material heat radiation power tester.
background technology:
Along with the continuous high speed development of electronic technology, the weight of the electronic products such as mobile phone is more and more lighter, and volume is also more and more slim.This makes the structure of electronic equipment internal more tight, and power density also significantly improves, and the selection of heat sink conception and heat sink material is also more harsh.Due to the trend that the electronic products such as mobile phone more do gentlier, do thinner and thinner, the thin slice heat sink material of ultra-thin and ultra-light enjoys favor.And the structure of thin slice heat sink material and type are abnormal numerous and diverse, the actual heat dispersion of various thin slice heat sink material varies.
The mode of traditional test sheets material conducts heat performance: use thermal analyses tester to be shone by laser the coefficient of heat conductivity of method test sheets material.Laser cooling method has comparatively exacting terms to tested object, first tested sample must be individual layer material of the same race, when sample comprises list, during the sandwich constructions such as double faced adhesive tape, the test philosophy of test is sent out because laser shines, when causing the number of plies more, the coefficient of heat conductivity tested out is lower, such as: conventional 25 μm of Prof. Du Yucang graphite film materials, when adopting thermal analyses tester test individual layer 25 μm of Prof. Du Yucang graphite film samples, its coefficient of heat conductivity is in 1400W/ (m*K) left and right, but after same graphite film material covers glue overlay film, test is by one side glue, graphite film, during the composite structure heat radiator sample that double faced adhesive tape forms, its coefficient of heat conductivity only has 510W/ (m*K), this is because the limitation of laser scattering method test philosophy causes.Laser shines method test philosophy: heated sample core by the xenon lamp pulse that shines, the temperature variation curve of detection range centre fixed range, extract half heating-up time calculated sample thermal diffusion coefficient by complicated formulas, and then calculate its coefficient of heat conductivity.When sample is not single layer structure, the heat conductivility of different layers is inconsistent, and heat conduction between layers needs the time equally, and this makes half heating-up time tested out greatly increase, and the thermal diffusion coefficient measured and coefficient of heat conductivity greatly reduce.
On the other hand, by finding the summary of long-term project design experiences: coefficient of heat conductivity can not reflect the actual heat dispersion of material completely, such as usual 25 μm of Prof. Du Yucang graphite film coefficient of heat conductivity are 1400W/ (m*K), far above the coefficient of heat conductivity 1100W/ (m*K) of 40 μm of Prof. Du Yucang graphite films, but in practical application, find that the radiating effect of 40 μm of Prof. Du Yucang graphite films is really a little more than the radiating effect of 25 μm of Prof. Du Yucang graphite films.
Visible, the judgement thin slice Heat Conduction Material radiating effect in actual applications that traditional method of testing can not be accurate and visual.
utility model content:
The purpose of this utility model be exactly for prior art exist deficiency and a kind of Heat Conduction Material heat radiation power tester that can reflect material heat dispersion is intuitively provided.
To achieve these goals, the technical solution adopted in the utility model is: Heat Conduction Material heat radiation power tester, include casing, thin slice Heat Conduction Material, box house is provided with microprocessor, Switching Power Supply, casing upper surface is provided with constant-temperature PTC thermal resistor, back up pad, display module, the two ends of constant-temperature PTC thermal resistor respectively with the input end of Switching Power Supply, output terminal electrical connection forms resistance circuit, be in series with current sensor in resistance circuit and be parallel with voltage sensor, temperature sensor is provided with bottom constant-temperature PTC thermal resistor, Switching Power Supply, display module, current sensor, voltage sensor and temperature sensor are electrically connected with microprocessor respectively, the two ends of thin slice Heat Conduction Material are sticked in constant-temperature PTC thermal resistor upper surface respectively, back up pad upper surface, the ice bucket putting into mixture of ice and water is placed with above back up pad, the bottom of ice bucket overlays in thin slice Heat Conduction Material upper surface.
The material of described casing is bakelite.
Described constant-temperature PTC thermal resistor and back up pad be arranged in parallel.
The upper surface of described constant-temperature PTC thermal resistor is mutually concordant with the upper surface of back up pad.
Described casing upper surface is provided with gauge tap, and gauge tap is electrically connected with microprocessor.
The utility model beneficial effect is: the Heat Conduction Material heat radiation power tester that the utility model provides, include casing, thin slice Heat Conduction Material, box house is provided with microprocessor, Switching Power Supply, casing upper surface is provided with constant-temperature PTC thermal resistor, back up pad, display module, the two ends of constant-temperature PTC thermal resistor respectively with the input end of Switching Power Supply, output terminal electrical connection forms resistance circuit, be in series with current sensor in resistance circuit and be parallel with voltage sensor, temperature sensor is provided with bottom constant-temperature PTC thermal resistor, Switching Power Supply, display module, current sensor, voltage sensor and temperature sensor are electrically connected with microprocessor respectively, the two ends of thin slice Heat Conduction Material are sticked in constant-temperature PTC thermal resistor upper surface respectively, back up pad upper surface, the ice bucket putting into mixture of ice and water is placed with above back up pad, the bottom of ice bucket overlays in thin slice Heat Conduction Material upper surface, the utility model utilizes the characteristic that constant-temperature PTC thermal resistor body temperature is constant, constant-temperature PTC thermal resistor power input depends on resistive surface heat losses speed, the heat dispersion of material can be reflected intuitively with the difference of the power input of PTC element time unloaded by the power input of PTC element during subsides thin slice Heat Conduction Material, test result is accurate.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit block diagram of the present utility model.
embodiment:
Below in conjunction with accompanying drawing, the utility model is further described, see shown in Fig. 1 ~ 2, Heat Conduction Material heat radiation power tester of the present utility model, include casing 1, thin slice Heat Conduction Material 10, casing 1 inside is provided with microprocessor 2, Switching Power Supply 3, casing 1 upper surface is provided with constant-temperature PTC thermal resistor 4, back up pad 6, display module 7, the two ends of constant-temperature PTC thermal resistor 4 respectively with the input end of Switching Power Supply 3, output terminal electrical connection forms resistance circuit, be in series with current sensor 8 in resistance circuit and be parallel with voltage sensor 9, temperature sensor 11 is provided with bottom constant-temperature PTC thermal resistor 4, Switching Power Supply 3, display module 7, current sensor 8, voltage sensor 9 and temperature sensor 11 are electrically connected with microprocessor 2 respectively, the two ends of thin slice Heat Conduction Material 10 are sticked in constant-temperature PTC thermal resistor 4 upper surface respectively, back up pad 6 upper surface, the ice bucket 12 putting into mixture of ice and water is placed with above back up pad 6, the bottom of ice bucket 12 overlays in thin slice Heat Conduction Material 10 upper surface, ice bucket 12 can strengthen the temperature difference at thin slice Heat Conduction Material 10 two ends, the heat-transfer rate of thin slice Heat Conduction Material 10 can be accelerated, improve test effect.
The material of casing 1 is bakelite, has excellent thermal insulation, greatly reduces the impact of environmental factor on test result.
Constant-temperature PTC thermal resistor 4 and back up pad 6 be arranged in parallel, and the upper surface of constant-temperature PTC thermal resistor 4 is mutually concordant with the upper surface of back up pad 6, are conveniently sticked on constant-temperature PTC thermal resistor 4 and back up pad 6 by thin slice Heat Conduction Material 10.
Casing 1 upper surface is provided with gauge tap 13, and gauge tap 13 is electrically connected with microprocessor 2.Display module 7 can displaying time, electric current, voltage, temperature and heat radiation power etc., includes time display screen, electric current display screen, voltage display screen, temperature display, heat radiation power display screen etc.
Test philosophy is:
1, get standard size thin slice Heat Conduction Material 10 (standard model defined in present embodiment is of a size of 75mmx125mm), the two ends of thin slice Heat Conduction Material 10 are sticked respectively in constant-temperature PTC thermal resistor 4 upper surface, back up pad 6 upper surface is as the load of constant-temperature PTC thermal resistor 4.
2, in ice bucket 12, put into mixture of ice and water, make ice bucket 12 bottom temp close to 0 degree, then ice bucket 12 is placed in above back up pad 6, the bottom of ice bucket 12 is overlayed in thin slice Heat Conduction Material 10 upper surface.
3, press gauge tap 13 and start test, measured electric current and the voltage of constant-temperature PTC thermal resistor 4 by current sensor 8, voltage sensor 9 respectively in real time, after 10 minutes, record the information such as the electric current of display and voltage.
4, the power=voltage * electric current of the constant-temperature PTC thermal resistor 4 of pure resistor element circuit is calculated by current/voltage.
5, closing control switch 13 makes tester naturally cool.
6, repeat step 1-5 and calculate corresponding power values totally three times and the average power of constant-temperature PTC thermal resistor 4 when calculating load.
7, remove thin slice Heat Conduction Material 10, make constant-temperature PTC thermal resistor 4 unloaded.
8, repeat step 3-5 and calculate corresponding power values totally three times and the average power of constant-temperature PTC thermal resistor 4 when calculating zero load.
When 9, deducting zero load by the average power of constant-temperature PTC thermal resistor during load 4, the average power of constant-temperature PTC thermal resistor 4 obtains difference power, difference power is larger, then represent that the heat radiation power of this thin slice Heat Conduction Material 10 is larger, namely heat dispersion is better, and this difference power reflects the quality of Heat Conduction Material heat dispersion intuitively.
The utility model utilizes the characteristic that constant-temperature PTC thermal resistor 4 body temperature is constant, constant-temperature PTC thermal resistor 4 power input depends on resistive surface heat losses speed, can reflect the heat dispersion of material by the power input of PTC element during subsides thin slice Heat Conduction Material 10 intuitively with the difference of the power input of PTC element time unloaded, test result is accurate.
Certainly, the above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.
Claims (5)
1. Heat Conduction Material heat radiation power tester, it is characterized in that: include casing (1), thin slice Heat Conduction Material (10), casing (1) inside is provided with microprocessor (2), Switching Power Supply (3), casing (1) upper surface is provided with constant-temperature PTC thermal resistor (4), back up pad (6), display module (7), the two ends of constant-temperature PTC thermal resistor (4) respectively with the input end of Switching Power Supply (3), output terminal electrical connection forms resistance circuit, be in series with current sensor (8) in resistance circuit and be parallel with voltage sensor (9), constant-temperature PTC thermal resistor (4) bottom is provided with temperature sensor (11), Switching Power Supply (3), display module (7), current sensor (8), voltage sensor (9) and temperature sensor (11) are electrically connected with microprocessor (2) respectively, the two ends of thin slice Heat Conduction Material (10) are sticked in constant-temperature PTC thermal resistor (4) upper surface respectively, back up pad (6) upper surface, back up pad (6) top is placed with the ice bucket (12) putting into mixture of ice and water, the bottom of ice bucket (12) overlays in thin slice Heat Conduction Material (10) upper surface.
2. Heat Conduction Material heat radiation power tester according to claim 1, is characterized in that: the material of described casing (1) is bakelite.
3. Heat Conduction Material heat radiation power tester according to claim 1, is characterized in that: described constant-temperature PTC thermal resistor (4) and back up pad (6) be arranged in parallel.
4. Heat Conduction Material heat radiation power tester according to claim 1, is characterized in that: the upper surface of described constant-temperature PTC thermal resistor (4) is mutually concordant with the upper surface of back up pad (6).
5. Heat Conduction Material heat radiation power tester according to claim 1, it is characterized in that: described casing (1) upper surface is provided with gauge tap (13), gauge tap (13) is electrically connected with microprocessor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520405935.8U CN204649660U (en) | 2015-06-12 | 2015-06-12 | Heat Conduction Material heat radiation power tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520405935.8U CN204649660U (en) | 2015-06-12 | 2015-06-12 | Heat Conduction Material heat radiation power tester |
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| Publication Number | Publication Date |
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| CN204649660U true CN204649660U (en) | 2015-09-16 |
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| CN201520405935.8U Active CN204649660U (en) | 2015-06-12 | 2015-06-12 | Heat Conduction Material heat radiation power tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982962A (en) * | 2020-08-25 | 2020-11-24 | 苏州鸿凌达电子科技有限公司 | Heat conduction effect detection device of heat conduction material |
-
2015
- 2015-06-12 CN CN201520405935.8U patent/CN204649660U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982962A (en) * | 2020-08-25 | 2020-11-24 | 苏州鸿凌达电子科技有限公司 | Heat conduction effect detection device of heat conduction material |
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| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 523000 Guangdong city of Dongguan province Zhenjiang Qishi village Jin Lei Industrial Park 1 Patentee after: Guangdong Quanxin materials Limited by Share Ltd Address before: 523000 Guangdong city of Dongguan province Zhenjiang Qishi village Jin Lei Industrial Park 1 Patentee before: DONGGUAN SUQUN INDUSTRIAL CO., LTD. |