CN104882424A - Liquid cooling radiator and corresponding IGBT module - Google Patents
Liquid cooling radiator and corresponding IGBT module Download PDFInfo
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- CN104882424A CN104882424A CN201410073029.2A CN201410073029A CN104882424A CN 104882424 A CN104882424 A CN 104882424A CN 201410073029 A CN201410073029 A CN 201410073029A CN 104882424 A CN104882424 A CN 104882424A
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Abstract
The invention discloses a liquid cooling radiator and a corresponding IGBT module, wherein the liquid cooling radiator comprises a body and a liquid flow channel arranged on the body; one end of the liquid flow channel is provided with a liquid inlet, and other end of the liquid flow channel is provided with a liquid outlet; a plurality of turbulent flow pieces are arranged in the liquid flow channel along a liquid flow direction; the distance among the turbulent flow pieces in the liquid flow channel at a fluid inlet end is greater than the distance among the turbulent flow pieces in the liquid flow channel at a fluid outlet end. According to the invention, the turbulent flow pieces are arranged in the liquid flow channel to enhance cooling liquid disturbance, thereby changing convective heat transfer coefficients at different positions, improving thermal homogeneity at the same time of guaranteeing heat dissipation effects of the liquid cooling radiator, and prolonging the service life of a device using the liquid cooling radiator.
Description
Technical field
The present invention relates to technical field of semiconductors, particularly relate to a kind of liquid cooling heat radiator, and apply the IGBT module of this liquid cooling heat radiator.
Background technology
Igbt (IGBT), is called for short IGBT module, is a kind of more satisfactory wholly-controled device, it has, and operating frequency is high, power capacity is large and drive the advantages such as simple.Be widely used in the fields such as consumer electronics, Medical Devices, intelligent grid and track traffic, and energy-conservation, improve in efficiency etc. and play a significant role.Igbt chip, drive circuit, control circuit and protective circuit are encapsulated into an inside modules by IGBT module, form the electronic power integrated module that function is complete, have certain versatility.Along with the raising that increase and the application of IGBT module range of application require, its will less towards volume, integrated level is higher, performance and the stronger future development of reliability.
Along with the development of IGBT module, if single angle from power electronic technology, integrated level also has very large room for promotion.But improving constantly of integrated level must make caloric value improve, after the temperature of IGBT module exceedes the scope of its work permission, probably cause component failure even to damage, cause serious financial consequences.Therefore, IGBT module heat dissipation problem becomes the biggest obstacle of restriction electronic power integrated module towards more high integration development.
In numerous power electronic equipment radiating mode, wind-cooling heat dissipating mode is owing to having that structure is simple, cost is low and high reliability becomes the main heat sink mode of current IGBT module.But along with IGBT module integration degree is more and more higher, power is increasing, because air-cooled forced-convection heat transfer coefficient is lower thus cannot improve the heat dispersion of IGBT module further.Liquid-cooling heat radiation makes its cooling effectiveness obtain further raising owing to having high convection transfer rate.
Liquid-cooling heat radiation is realized by liquid cooling heat radiator, and above-mentioned liquid cooling heat radiator generally includes liquid cooling pipeline, has the cooling fluid of flowing in liquid cooling pipeline.Heat in IGBT module can be taken away by cooling fluid, thus realizes the heat radiation of IGBT module.Current liquid cooling pipeline is generally S shape, it has entrance and exit, above-mentioned porch due to coolant temperature lower thus there is reasonable radiating effect, but raise gradually along with its temperature of flowing of cooling fluid, the cooling fluid in exit declines due to the higher thus radiating effect of its temperature.Like this then to result in IGBT module internal temperature gradient comparatively large, the damage of IGBT module is likely caused due to the difference of thermal stress.In addition, in S shape liquid cooling pipeline corner due to flip-flop the flow direction of current, can produce local turbulent section around the corner, the flow velocity of cooling fluid can obviously increase, and because flow velocity is different, convection transfer rate is also different, and then causes radiating effect different.So, use the temperature consistency with the IGBT module of S shape liquid cooling pipeline liquid cooling heat radiator poor, uniform temperature is bad.
Summary of the invention
In view of this, the invention provides a kind of liquid cooling heat radiator and apply the IGBT module of this liquid cooling heat radiator.
One of to achieve these goals, a kind of liquid cooling heat radiator of the present invention, it comprises body, the flow channel for liquids be arranged on described body, one end of described flow channel for liquids is provided with liquid inlet, the other end of described flow channel for liquids is provided with liquid outlet, in described flow channel for liquids, the flow direction of liquid is provided with some flow-disturbing parts, the spacing in the flow channel for liquids of described fluid inlet end between flow-disturbing part is greater than the spacing in the flow channel for liquids of described liquid outlet end between flow-disturbing part.
As a further improvement on the present invention, the S-shaped arrangement of described flow channel for liquids, the flow channel for liquids of described S shape comprises some line flowing channels be parallel to each other and the curved channel being communicated with described some line flowing channels, between described adjacent line flowing channel, the spacing in the line flowing channel of described liquid outlet between flow-disturbing part is less than the spacing in the line flowing channel be adjacent between flow-disturbing part.
As a further improvement on the present invention, the shape of described flow-disturbing part is cylindrical.
As a further improvement on the present invention, described flow-disturbing part and described flow channel for liquids are made of one piece.
As a further improvement on the present invention, the material of described flow-disturbing part and flow channel for liquids is aluminium.
As a further improvement on the present invention, described some flow-disturbing parts are dislocatedly distributed, and the flow-disturbing part be adjacent of described arbitrary flow-disturbing part and both sides thereof is positioned at leg-of-mutton three summits.
For realizing another goal of the invention above-mentioned, a kind of IGBT module of the present invention, it comprises liquid cooling heat radiator as above.
Compared with prior art, the invention has the beneficial effects as follows: liquid cooling heat radiator of the present invention strengthens the disturbance of cooling fluid by arranging flow-disturbing part in flow channel for liquids, thus change the convection transfer rate at diverse location place, while ensure that the radiating effect of liquid cooling heat radiator, improve its uniform temperature, extend the life-span of the device using this liquid cooling heat radiator.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the planar structure schematic diagram of liquid cooling heat radiator one embodiment of the present invention.
In figure, the corresponding relation of dependency structure and its label is as follows:
Body-10; Flow channel for liquids-20, liquid inlet-201, liquid outlet-202, line flowing channel-203, curved channel-204; Flow-disturbing part-30.
Embodiment
The present invention discloses a kind of liquid cooling heat radiator, it comprises body, the flow channel for liquids be arranged on described body, one end of described flow channel for liquids is provided with liquid inlet, the other end of described flow channel for liquids is provided with liquid outlet, in described flow channel for liquids, the flow direction of liquid is provided with some flow-disturbing parts, the spacing in the flow channel for liquids of described fluid inlet end between flow-disturbing part is greater than the spacing in the flow channel for liquids of described liquid outlet end between flow-disturbing part.
Preferably, the S-shaped arrangement of described flow channel for liquids, the flow channel for liquids of described S shape comprises some line flowing channels be parallel to each other and the curved channel being communicated with described some line flowing channels, between described adjacent line flowing channel, the spacing in the line flowing channel of described liquid outlet between flow-disturbing part is less than the spacing in the line flowing channel be adjacent between flow-disturbing part.
Preferably, the shape of described flow-disturbing part is cylindrical.
Preferably, described flow-disturbing part and described flow channel for liquids are made of one piece.
Preferably, the material of described flow-disturbing part and flow channel for liquids is aluminium.
Preferably, described some flow-disturbing parts are dislocatedly distributed, and the flow-disturbing part be adjacent of described arbitrary flow-disturbing part and both sides thereof is positioned at leg-of-mutton three summits.
The present invention also discloses a kind of IGBT module, and it comprises liquid cooling heat radiator as above.
Technical scheme in the present invention is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
As shown in Figure 1, liquid cooling heat radiator 100 of the present invention comprises body 10, is arranged at the flow channel for liquids 20 on body 10.Wherein, aforesaid liquid runner 20 is the flow duct of cooling fluid, and one end of this flow channel for liquids 20 offers liquid inlet 201, and the other end offers liquid outlet 202.Cooling fluid enters flow channel for liquids 20 from aforesaid liquid outlet 202, and flows along flow channel for liquids 20, and finally flow out from liquid outlet 202, heat in flow process, is taken away by cooling fluid in flow channel for liquids 20, thus reaches the object reducing temperature.
In order to the difference of balance those liquid inlet 201 and liquid outlet 202 place radiating effect, along the flow direction of cooling fluid in aforesaid liquid runner 20, be provided with some flow-disturbing parts 30.The area of dissipation that flow-disturbing part not only adds liquid cooling heat radiator is set, meanwhile, adds the disturbance of cooling fluid, convection transfer rate is increased, and then improve the effect of heat radiation.Further, the spacing in the flow channel for liquids 20 of aforesaid liquid entrance 201 end between flow-disturbing part 30, is greater than the spacing between flow-disturbing part 30 in the flow channel for liquids 20 of liquid outlet 202 end.Setting like this, the flow velocity of the cooling fluid of liquid inlet 201 end is less than the flow velocity of the cooling fluid of liquid outlet 202 end, namely the radiating effect of liquid outlet 202 end obtains enhancing, thus solves the problem that the liquid inlet of liquid cooling heat radiator and liquid outlet radiating effect differ greatly.
As a kind of execution mode, the S-shaped arrangement of aforesaid liquid runner 20, the flow channel for liquids 20 of this S shape comprises some line flowing channels 203 be parallel to each other and the curved channel 204 being communicated with above-mentioned some line flowing channels 203.Because cooling fluid increases suddenly at curved channel 204 place flow velocity, the corresponding increase of this place's convection transfer rate, the good heat dissipation effect of flow channel for liquids 20 at radiating effect relative rectilinear runner 203 place of curved channel 204 place of S shape like this, thus cause S shape liquid cooling heat radiator 100 uniform temperature poor.Therefore, in above-mentioned line flowing channel 203, some flow-disturbing parts 30 are set, and between adjacent line flowing channel 203, the spacing in the line flowing channel 203 of liquid outlet 202 between flow-disturbing part 30, is less than the spacing between flow-disturbing part 30 in the line flowing channel 203 be adjacent.Also namely, along the flow direction of cooling fluid, near liquid outlet 202 place line flowing channel 203 in flow-disturbing part 30 quantity more than, away from the quantity of the flow-disturbing part 30 in liquid outlet 202 place line flowing channel 203.Setting like this, can improve the quantity of cooling fluid in line flowing channel 203, increases its radiating effect, thus solves line flowing channel and the unbalanced problem of curved channel radiating effect of S type liquid cooling heat radiator.
Preferably, above-mentioned flow-disturbing part 30 is cylinder, and itself and flow channel for liquids 20 are made of one piece.So, production and the processing of liquid cooling heat radiator is convenient to.In order to strengthen the flow-disturbing effect of flow-disturbing part 30, above-mentioned some flow-disturbing parts 30 are dislocatedly distributed, and namely for arbitrary flow-disturbing part 30, the flow-disturbing part 30 that this flow-disturbing part 30 is adjacent with its both sides is positioned at leg-of-mutton three summits on position relationship.So, cooling fluid and flow-disturbing part 30 collide, and after changing flow direction, can continue to collide with next flow-disturbing part 30, thus make each flow-disturbing part 30 can both play the effect of flow-disturbing.
The material of above-mentioned flow-disturbing part 30 and flow channel for liquids 20 can be aluminium, thus liquid cooling heat radiator is functional, and comparatively light.
The present invention is a kind of IGBT module also, and this IGBT module comprises substrate and liquid cooling heat radiator as above, and this liquid cooling heat radiator is contacted with the substrate of IGBT module by heat-conducting silicone grease.
In sum, liquid cooling heat radiator of the present invention strengthens the disturbance of cooling fluid by arranging flow-disturbing part in flow channel for liquids, thus change the convection transfer rate at diverse location place, while ensure that the radiating effect of liquid cooling heat radiator, improve its uniform temperature, extend the life-span of the device using this liquid cooling heat radiator.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through suitable conjunction, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (7)
1. a liquid cooling heat radiator, it comprises body, the flow channel for liquids be arranged on described body, one end of described flow channel for liquids is provided with liquid inlet, the other end of described flow channel for liquids is provided with liquid outlet, it is characterized in that, in described flow channel for liquids, the flow direction of liquid is provided with some flow-disturbing parts, the spacing in the flow channel for liquids of described fluid inlet end between flow-disturbing part is greater than the spacing in the flow channel for liquids of described liquid outlet end between flow-disturbing part.
2. liquid cooling heat radiator according to claim 1, it is characterized in that, the S-shaped arrangement of described flow channel for liquids, the flow channel for liquids of described S shape comprises some line flowing channels be parallel to each other and the curved channel being communicated with described some line flowing channels, between described adjacent line flowing channel, the spacing in the line flowing channel of described liquid outlet between flow-disturbing part is less than the spacing in the line flowing channel be adjacent between flow-disturbing part.
3. liquid cooling heat radiator according to claim 1, is characterized in that, the shape of described flow-disturbing part is cylindrical.
4. liquid cooling heat radiator according to claim 1, is characterized in that, described flow-disturbing part and described flow channel for liquids are made of one piece.
5. liquid cooling heat radiator according to claim 4, is characterized in that, the material of described flow-disturbing part and flow channel for liquids is aluminium.
6. liquid cooling heat radiator according to claim 1, is characterized in that, described some flow-disturbing parts are dislocatedly distributed, and the flow-disturbing part be adjacent of described arbitrary flow-disturbing part and both sides thereof is positioned at leg-of-mutton three summits.
7. an IGBT module, is characterized in that, described IGBT module comprises liquid cooling heat radiator according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410073029.2A CN104882424B (en) | 2014-02-28 | 2014-02-28 | Liquid cooling heat radiator and corresponding IGBT module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410073029.2A CN104882424B (en) | 2014-02-28 | 2014-02-28 | Liquid cooling heat radiator and corresponding IGBT module |
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| Publication Number | Publication Date |
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| CN104882424A true CN104882424A (en) | 2015-09-02 |
| CN104882424B CN104882424B (en) | 2018-08-03 |
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| CN201410073029.2A Active CN104882424B (en) | 2014-02-28 | 2014-02-28 | Liquid cooling heat radiator and corresponding IGBT module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281734A (en) * | 2018-03-23 | 2018-07-13 | 安徽汇展热交换***股份有限公司 | New energy battery radiator |
| CN110634823A (en) * | 2019-09-08 | 2019-12-31 | 南京金龙新能源汽车研究院有限公司 | Segmented flow blocking type heat dissipation structure of motor controller and heat dissipation method thereof |
| CN111490448A (en) * | 2020-04-28 | 2020-08-04 | 华中科技大学 | Laser module |
| CN113056173A (en) * | 2021-03-15 | 2021-06-29 | Tcl华星光电技术有限公司 | Display device |
| CN117355116A (en) * | 2023-11-17 | 2024-01-05 | 广东液冷时代科技有限公司 | Multi-section type runner cold plate phase change heat dissipation system of data center and control method thereof |
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| JP2005019905A (en) * | 2003-06-30 | 2005-01-20 | Matsushita Electric Ind Co Ltd | Cooler |
| CN101950822A (en) * | 2010-09-14 | 2011-01-19 | 联合汽车电子有限公司 | Controller and battery cold plate |
| CN201894034U (en) * | 2010-11-12 | 2011-07-06 | 奇鋐科技股份有限公司 | Improved runner structure of water-cooling device |
| CN202013880U (en) * | 2011-01-28 | 2011-10-19 | 艾默生网络能源有限公司 | Liquid-cooled radiator |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005019905A (en) * | 2003-06-30 | 2005-01-20 | Matsushita Electric Ind Co Ltd | Cooler |
| CN101950822A (en) * | 2010-09-14 | 2011-01-19 | 联合汽车电子有限公司 | Controller and battery cold plate |
| CN201894034U (en) * | 2010-11-12 | 2011-07-06 | 奇鋐科技股份有限公司 | Improved runner structure of water-cooling device |
| CN202013880U (en) * | 2011-01-28 | 2011-10-19 | 艾默生网络能源有限公司 | Liquid-cooled radiator |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281734A (en) * | 2018-03-23 | 2018-07-13 | 安徽汇展热交换***股份有限公司 | New energy battery radiator |
| CN110634823A (en) * | 2019-09-08 | 2019-12-31 | 南京金龙新能源汽车研究院有限公司 | Segmented flow blocking type heat dissipation structure of motor controller and heat dissipation method thereof |
| CN111490448A (en) * | 2020-04-28 | 2020-08-04 | 华中科技大学 | Laser module |
| CN111490448B (en) * | 2020-04-28 | 2023-09-22 | 华中科技大学 | Laser module |
| CN113056173A (en) * | 2021-03-15 | 2021-06-29 | Tcl华星光电技术有限公司 | Display device |
| CN117355116A (en) * | 2023-11-17 | 2024-01-05 | 广东液冷时代科技有限公司 | Multi-section type runner cold plate phase change heat dissipation system of data center and control method thereof |
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| CN104882424B (en) | 2018-08-03 |
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Address after: 710016 No. 15 Wenjingbei Road, Jingkai District, Xi'an City, Shaanxi Province Patentee after: Xi'an Zhongche Yongji Electric Co. Ltd. Address before: 710016 No. 15 Wenjingbei Road, Jingkai District, Xi'an City, Shaanxi Province Patentee before: Xi'an Yongdian Electric Co., Ltd. |
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