CN103068210A - Novel motor controller heat dissipation system - Google Patents
Novel motor controller heat dissipation system Download PDFInfo
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- CN103068210A CN103068210A CN2012105769567A CN201210576956A CN103068210A CN 103068210 A CN103068210 A CN 103068210A CN 2012105769567 A CN2012105769567 A CN 2012105769567A CN 201210576956 A CN201210576956 A CN 201210576956A CN 103068210 A CN103068210 A CN 103068210A
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Abstract
The invention discloses a novel motor controller heat dissipation system which comprises a seal cavity, liquid phase change media are arranged inside the cavity, the cavity wall comprises at least one micro groove wall and a heat dissipation wall, and the outer surface of the micro groove wall is suitable for being tightly attached to a heating element. The inner surface of the micro groove wall is provided with a micro groove, the heat dissipation wall is provided with a cooling device, a micro groove protection baffle arranged inside the seal cavity is close to the micro groove wall, and the upper end and the lower end of the micro groove protection baffle are respectively provided with a channel used for passing through of the phase change media. According to the fact that the micro groove protection baffle is arranged inside the seal cavity, formation of a micro groove thin liquid film is protected, steaming and heat dissipation can be also achieved during movement of an automobile, and heat dissipation efficiency of a motor controller is improved. The whole system is simple in structure, is relatively small in size under the same heat dissipation efficiency, and high in heat dissipation maximum.
Description
Technical field
The present invention relates to the radiator field, particularly relate to a kind of cooling system for electric vehicle controller.
Background technology
Progress along with society, people are increasing to the demand of the energy, the non-renewable resources such as oil then are rapid minimizings on the earth, and this has seriously restricted the long-term sustainable development of human civilization, and people begin to try to explore new renewable resource and replace traditional energy for this reason.The just active demand of this development, various new-energy automobiles arise at the historic moment, and wherein pure electric automobile has obtained great development decades recently.
Electric machine control system is one of key technology of electric automobile, and electric machine controller directly has influence on the quality of electric automobile as the core component of electric automobile.The heating overwhelming majority of control system is that the thermal losses by power device causes, and power device is relatively more responsive to temperature, and excess Temperature can affect the performance of controller, even causes the irreversible damage of power device, affects the normal use of controller.10 ℃ of rules show that when 10 ℃ of device temperature reductions, device reliability will double.Because the heating of IGBT constant power element is more concentrated, how to effectively reduce its working temperature, prolongs its useful life, has become the study hotspot of countries in the world electric automobile industry.
Present finished product controller for electric vehicle in the world mainly uses air-cooled and water-cooling pattern cools off.Lower and the volume of the air-cooled radiator heat radiation limit and weight are larger; If use traditional water-filled radiator, the tight connection encapsulation of cooled plate and power device in case there is water to infiltrate controller inside, will cause great security incident, cause personal safety and property loss.The face heat flux of the required coolings such as current large scale integrated circuit and IGBT has reached the magnitude of the stove heart heat flux of light-water stove reactor, simple forced air-cooling and water-cooling pattern have been difficult to satisfy the system radiating requirement, and some other traditional heat-dissipating method has also exposed the defectives such as size is large, device is complicated, efficient is low.Therefore, for the concrete applied environment of electric machine controller, the chilly technology of development of new is very urgent.
Characteristics For Micro Capillary Evaporator has the advantages such as the heat-obtaining limit is high, volume is little, future in engineering applications is wide, its operation principle is: by offer the micro-channel with capillary action at the microflute wall, the phase change medium of microflute wall bottom is flowed along microflute by capillarity, in groove, form thin liquid film evaporation and nucleate boiling evaporation enhanced heat exchange process, take away the heat on the heater element.A kind of microflute group formula radiator is disclosed such as Chinese patent literature CN2834120Y, comprise that inwall is provided with microflute group's evaporator and natural convection condenser, with loop of the continuous formation of flexible pipe, cold-producing medium is finished the transmission of heat by phase transformation between evaporator and condenser between evaporator and the condenser.This radiator is owing to adopted the microflute group structure, radiating efficiency improves greatly, but, this Characteristics For Micro Capillary Evaporator is mainly used in the heat radiation of the electronic devices and components fixed at present, and electric automobile constantly is in the state that rocks in the process of motion, and this rocking can make medium acutely splash in annular seal space, and the liquid that splashes impacts on the microflute wall, destroy the evaporation of the thin liquid film layer on the microflute wall, and then affected the efficient of heat radiation.Therefore this efficient microflute group heat dissipation technology can't be applied to the heat radiation of the moving objects such as electric automobile at present.
Summary of the invention
The problem to be solved in the present invention is exactly to overcome automobile to rock impact on microflute wall surface liquid film, thereby the thin film evaporation cooling technology high radiating efficiency is applied to the electric automobile field, proposes a kind of novel cooling system of electric machine controller of suitable electric automobile.
For achieving the above object, the present invention is by the following technical solutions:
A kind of New-type electric machine controller cooling system; comprise a seal chamber; in described cavity, be provided with the liquid phase-change medium; described cavity wall comprises at least one microflute wall and at least one heat radiation wall; the outer surface of described microflute wall is used for being close to heater element; inner surface at described microflute wall is provided with micro-channel; be provided with cooling device on the described heat radiation wall; be provided with microflute protection baffle plate in the described seal chamber; described microflute protection baffle plate is close to the setting of microflute wall, and the two ends of described microflute protection baffle plate are provided with the passage that supplies gaseous state and liquid phase-change medium to pass through.
Described micro-channel is the groove of vertical and horizontal vertical interlaced.
Described cooling device is the radiating fin that is arranged on the heat radiation wall outer surface.
Described heat radiation wall is ups and downs wavy curved surface.
The cross section of the concavo-convex fluctuating curved surface of described heat radiation wall is rectangle.
Described radiating fin is the cylindric or rectangle column perpendicular to the heat radiation wall.
Described cooling device is the water cooling plant that cooled plate lid and heat radiation wall surround, described cooled plate lid surrounds the cooling cavity with the heat radiation wall, the side of described cooled plate lid is provided with water inlet and delivery port, and cooling water enters the cooling cavity from water inlet, and flows out from delivery port after the heat radiation wall exchange heat.
Described liquid phase-change medium is new fluorocarbons.
The cavity wall of described seal chamber is provided with for the medium inlet that injects liquid phase change medium.
The invention has the beneficial effects as follows:
1, the electric machine controller cooling system of the present invention's design; comprise a seal chamber; in described cavity, be sealed with the liquid phase-change medium; cavity wall comprises at least one microflute wall and at least one heat radiation wall; the outer surface of microflute wall is close to heat dissipation element, is provided with micro-channel at the inner surface of microflute wall, is provided with microflute protection baffle plate in the seal chamber; described microflute protection baffle plate is close to the setting of microflute wall, and the two ends of microflute protection baffle plate are provided with the passage that passes through for liquid gentle attitude phase change medium.The present invention establishes microflute wall protection baffle plate in seal chamber; and microflute protection baffle plate arranges near the microflute wall; such setting makes between microflute protection baffle plate and the microflute wall space less; phase change medium can't produce violent splashing and destroy the thin liquid film evaporation of microflute plate surface in narrow space; phase change medium between heat radiation wall and the microflute protection baffle plate then directly impacts on the microflute baffle owing to rocking splashing of producing; so just guaranteed normally carrying out of automobile microflute wall evaporative heat loss at the volley; greatly improved the heat radiation limit, for the electric automobile cooling system provides new optimization direction.
2, electric machine controller cooling system of the present invention, described micro-channel is the groove of vertical and horizontal vertical interlaced, the degree of depth of micro-channel and width are suitable for producing capillarity, this micro-channel is horizontal and vertical to be crisscross arranged, can make the phase change medium liquid film be evenly distributed in the surface of microflute wall, can improve the efficient of whole microflute wall, thereby improve the radiating efficiency of system.
3, electric machine controller cooling system of the present invention, the cooling device that the outer surface of heat radiation wall arranges can be selected different heat dissipating methods according to the situation of reality.As can be directly establishing radiating fin in the outside of heat radiation wall, and the radiating fin forward is arranged at the windward side of automobile, can takes full advantage of like this and natural air cooled the wall that dispels the heat be cooled off; Simultaneously also can adopt Water Cooling Technology, at cooled plate lid of arranged outside of heat radiation wall, the cooling water system that utilizes vehicle body to carry dispels the heat to the heat radiation wall.This design applying flexible can be selected different heat abstractors according to different vehicles, has the wider scope of application.
4, phase change medium of the prior art is inflammable, the poisonous mediums such as ethanol, deionized water, methyl alcohol, acetone, radiator is because being used for electric automobile among the present invention, having adopted new fluorocarbons is phase change medium, it has the advantages such as high-insulativity, boiling point is low, nontoxic, explosion-proof, physico-chemical property is stable, need not in dielectric cavity, to be coated with insulating coating, so that the radiator manufacturing procedure reduces, radiator is improved at aspects such as explosion-proof, corrosion resistances, and reliability and fail safe are greatly improved.
Description of drawings
Fig. 1 is that the present invention adopts the structural representation when air-cooled;
Fig. 2 is that the present invention disassembles schematic diagram when adopting water-cooled;
Fig. 3 is the cutaway view of the present invention when air-cooled;
Fig. 4 is the dispel the heat structural representation of another embodiment of wall of the present invention;
Among the figure: 1-microflute wall, the 10-heater element, the 11-micro-channel, the horizontal micro-channel of 12-, 2-microflute protection baffle plate, the 3-wall that dispel the heat, 31-medium inlet, the 32-radiating fin, the 4-phase change medium, the 5-seal chamber, the 6-cooled plate is covered, 61-water inlet, 62-delivery port.
Embodiment
Embodiment one:
Referring to Fig. 1 and Fig. 3, a kind of New-type electric machine controller cooling system, comprise a seal chamber 5, be provided with liquid phase-change medium 4 in described cavity, described phase change medium 4 is new fluorocarbons, such as fluorine carboritride Fla or 3000, this compounds has suitable, the corroding metal not of boiling point, and have a high-insulativity, and this makes radiator be improved at aspects such as explosion-proof, corrosion resistances, and reliability and fail safe are greatly improved.With respect to traditional water-filled radiator, the present invention can make electric machine controller avoid being leaked and the impact of dewfall and damage power component.Described cavity wall has a microflute wall 1 and a heat radiation wall 3, the outer surface of described microflute wall 1 is used for being close to heater element 10, inner surface at described microflute wall 1 is provided with micro-channel 11, described heat radiation wall 3 is provided with cooling device, and cooling device herein can be natural air cooled or pass through the external water-cooling system of pipeline.Be provided with microflute protection baffle plate 2 in the described seal chamber 5; described microflute protection baffle plate 2 is close to microflute wall 1 and arranges; the two ends of described microflute protection baffle plate 2 are provided with the passage that passes through for liquid gentle attitude phase change medium 4; namely between the bottom surface of described microflute protection baffle plate 2 and seal chamber 5, be provided with the passage that passes through for liquid phase change medium 4, be provided with the passage that passes through for gaseous state phase change medium 4 between the end face of described microflute protection baffle plate 2 and seal chamber 5.
Microflute protection baffle plate 2 in the present embodiment arranges near microflute wall 1, mainly is in order to prevent from rocking owing to automobile in the driving process thin liquid film evaporation of splashing and destroying microflute wall 1 surface of the phase change medium 4 that causes.Referring to Fig. 3, the bottom of microflute protection baffle plate 2 is lower than the liquid level of phase change medium 4, microflute protection baffle plate 2 is close to again microflute wall 1 and arranges, so just so that the space between microflute protection baffle plate 2 and the microflute wall 1 is less, medium between the two can not splash because rocking of car produces acutely in narrow space, and then destroys the liquid film evaporation on microflute wall 1 surface; Phase change medium 4 between microflute protection baffle plate 2 and the heat radiation wall 3 also can not affect the thin film evaporation on microflute wall 1 surface because the splashing of generation of rocking of automobile then directly impacts on microflute protection baffle plate 2.With regard to having solved microflute group heat dissipation technology is applied to problem on the electric automobile in the motion like this.
As other can conversion execution mode, described phase change medium can also adopt other phase change medium with phase transition property, such as methyl alcohol.When using other phase change medium, be according to the physicochemical properties of this phase change medium, carry out the related works such as explosion-proof, anticorrosion.For the ease of injecting phase change medium 4, can be provided with at the cavity wall of described seal chamber 5 for the medium inlet 31 that injects phase change medium 4, described medium inlet 31 injects seal chambers 5 at phase change medium 4, the liquid level of medium and seal chamber internal pressure are detected qualified after, seal fully.Also can offer medium inlet 31, directly an amount of phase change medium 4 be injected in the seal chamber 5, then by modes such as welding seal chamber 5 be sealed.
Embodiment two:
On the basis of above-described embodiment, micro-channel 11 horizontal and vertical being crisscross arranged in the present embodiment, the longitudinally adjacent tight setting of micro-channel is covered with whole microflute wall, is used for the phase change medium of seal chamber 5 bottoms is adsorbed up at microflute wall formation one deck thin liquid film by capillarity; Horizontal micro-channel 12 intervals arrange, and mainly are for the phase change medium that absorption is come up is evenly distributed on the microflute wall more, can improve like this evaporation efficiency of microflute wall.
In the present embodiment, but heat radiation wall 3 forwards are arranged at the windward side of electric automobile, in order to make the colder better effects if of heat radiation wall 3, the radiating fin 32 that the outer surface that heat radiation wall 3 spaces are removed is provided with, referring to Fig. 1, described radiating fin 32 is that described projection can be is cylindric perpendicular to the plate face bulge-structure of heat radiation wall, needle-like, ripple sheet etc.Automobile can utilize natural wind that the heat radiation wall is lowered the temperature in the process of motion.Like this, the one side of described seal chamber 5 is microflute plate evaporating surface (being the inner surface of microflute wall 1), and another side is the cooling surface (inner surface of the wall 3 that namely dispels the heat) of phase change medium, has just realized heat transfer process in annular seal space inside, not only save the space, and improved radiating efficiency.
As other can conversion execution mode, the wall 3 of heat radiation described in the present embodiment can be set to ups and downs wavy curved surface, this wavy curved surface has effectively increased the air-cooled area of heat radiation wall, makes the better effects if of heat radiation.For the ease of processing, the cross section of described heat radiation wall 3 ups and downs wavy curved surfaces can be made as and be rectangle, and referring to Fig. 4, radiating fin 32 is the laminated structure perpendicular to radiating surface.
In the present embodiment, phase change medium 4 is by micro-channel 11,12 capillarity is distributed on the cavity wall that is adjacent to heater element 10, utilize microflute group's thin liquid film evaporation and the dual Transformation Principle of thick liquid film place nucleate boiling, heat is taken away rapidly from heating face (being the microflute wall) by phase change medium 4, the gaseous state phase change medium runs into heat radiation wall 3 condensations that are covered with radiating fin 32, radiating fin 32 place faces are positioned over the ventilations such as headstock, the fin heat is taken away by natural wind, condensed medium 11 is assembled in the dielectric cavity bottom under Action of Gravity Field, and by micro-channel 11,12 capillarity is back on the microflute wall 1 that is adjacent to heater element 10, finishes one without powered attendant-controlled wheelchairs circulation.
Embodiment three:
Be positioned at the form that the cooling device of heat radiation on the wall 3 can adopt coldplate among the present invention, as another kind of embodiment of the present invention, in the present embodiment as shown in Figure 2, cooling device is the water cooling plant that cooled plate lid 6 and heat radiation wall 3 surround, described cooled plate lid 6 surrounds the cooling cavity with heat radiation wall 3, the side of described cooled plate lid 6 is provided with water inlet 61 and delivery port 62, and cooling water enters the cooling cavity from water inlet 61, flows out from delivery port 62 after raising with heat radiation wall 3 exchange heat temperature.Cooled plate lid 6 in the present embodiment can directly cool off the heat radiation wall 3 that radiating fin 32 is not set, and this design is suitable for the heat radiation of lower-powered electric machine controller.Also can be radiating fin 32 in being arranged on described cavity, this design can increase the area of dissipation of heat radiation wall, is applicable to the heat radiation of the larger electric machine controller of power.Adopt water-cooling method more effectively to lower the temperature to the heat radiation wall, thereby improve the efficient of cooling system.Simultaneously because the efficient of water-cooled is than air-cooled height, identical heat dissipation capacity can the volume of water cooling equipment do less, can make so the shared space of whole cooling system less.
Water cooling equipment in the present embodiment is different from the water cooling equipment in the orthodox car, and traditional water cooling equipment directly cools off heating element, and radiating efficiency is far below radiator of the present invention.In addition, water cooling equipment have leak, the possibility of dewfall, the components and parts of being close on it have potential potential safety hazard.And the water cooling equipment in the present embodiment is that the heat radiation wall is cooled off, the heater element of electric machine controller is cooled off it by the evaporative cooling process of phase change medium, so not only improve radiating efficiency, also provide a safer operational environment for electric machine controller simultaneously.
The present invention is not limited in above-mentioned embodiment, it is apparent to those skilled in the art that every any change and replacement of doing within the invention spirit and principle scope, all should be within protection scope of the present invention.
Claims (9)
1. New-type electric machine controller cooling system; comprise a seal chamber (5); in described cavity, be provided with liquid phase-change medium (4); described cavity wall comprises at least one microflute wall (1) and at least one heat radiation wall (3); the outer surface of described microflute wall (1) is used for being close to heater element; inner surface at described microflute wall (1) is provided with micro-channel (11); be provided with cooling device on the described heat radiation wall (3); it is characterized in that: be provided with microflute protection baffle plate (2) in the described seal chamber (5); described microflute protection baffle plate (2) is close to microflute wall (1) setting, and described microflute protection baffle plate (2) two ends are provided with the passage that supplies gaseous state and liquid phase-change medium to pass through.
2. a kind of New-type electric machine controller cooling system according to claim 1, it is characterized in that: described micro-channel (11) is the groove of vertical and horizontal vertical interlaced.
3. a kind of New-type electric machine controller cooling system according to claim 1 and 2 is characterized in that: described cooling device is for being arranged on the radiating fin (32) on heat radiation wall (3) outer surface.
4. each described a kind of New-type electric machine controller cooling system according to claim 1-3, it is characterized in that: described heat radiation wall (3) is ups and downs wavy curved surface.
5. a kind of New-type electric machine controller cooling system according to claim 4, it is characterized in that: the cross section of the concavo-convex fluctuating curved surface of described heat radiation wall (3) is rectangle.
6. each described a kind of New-type electric machine controller cooling system according to claim 3-5 is characterized in that: described radiating fin (32) is the cylindric or rectangle columnar projections perpendicular to the heat radiation wall.
7. a kind of New-type electric machine controller cooling system according to claim 1 and 2, it is characterized in that: described cooling device is the water cooling plant that cooled plate lid (6) and heat radiation wall (3) surround, described cooled plate lid (6) surrounds the cooling cavity with the heat radiation wall, its side is provided with water inlet (61) and delivery port (62), cooling water enters the cooling cavity from water inlet (61), flows out from delivery port (62) after raising with heat radiation wall (3) exchange heat temperature.
8. each described a kind of New-type electric machine controller cooling system according to claim 1-7, it is characterized in that: described liquid phase-change medium (4) is new fluorocarbons.
9. each described a kind of New-type electric machine controller cooling system according to claim 1-8 is characterized in that: the cavity wall of described seal chamber (5) is provided with for the medium inlet (31) that injects liquid phase change medium (4).
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| CN201210576956.7A CN103068210B (en) | 2012-12-27 | 2012-12-27 | Novel motor controller heat dissipation system |
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| CN201210576956.7A CN103068210B (en) | 2012-12-27 | 2012-12-27 | Novel motor controller heat dissipation system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413794A (en) * | 2013-08-16 | 2013-11-27 | 中国科学院深圳先进技术研究院 | Radiating packaging structure of semiconductor power device |
| CN104780736A (en) * | 2014-01-13 | 2015-07-15 | 潘晨曦 | Motor controller |
| CN105530799A (en) * | 2014-10-21 | 2016-04-27 | 日信工业株式会社 | Vehicle control device and vehicle brake system |
| CN106231871A (en) * | 2016-08-23 | 2016-12-14 | 山东时风（集团）有限责任公司 | A kind of heat abstractor of electric vehicle controller |
| CN106304781A (en) * | 2016-08-23 | 2017-01-04 | 山东时风（集团）有限责任公司 | A kind of electric vehicle controller of band capillary radiator structure |
| CN108848658A (en) * | 2018-08-17 | 2018-11-20 | 中国科学院电工研究所 | A kind of controller inside cooling structure |
| CN110058663A (en) * | 2018-01-18 | 2019-07-26 | 阮琳 | A kind of radiator and the electronic equipment with the radiator |
| CN112328021A (en) * | 2020-11-06 | 2021-02-05 | 浪潮电子信息产业股份有限公司 | Server and internal exposure heat dissipation structure thereof |
| CN113864743A (en) * | 2021-10-21 | 2021-12-31 | 中国科学院工程热物理研究所 | Photo-thermal integrated radiator |
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| CN2834120Y (en) * | 2005-09-07 | 2006-11-01 | 中国科学院工程热物理研究所 | Natural air-cooled passive circulating micro-grooves phase change heat radiation system |
| CN201160359Y (en) * | 2008-01-30 | 2008-12-03 | 中国科学院工程热物理研究所 | Straight-fin heat expansion reinforced structure minuteness scale composite phase-change heat fetching apparatus |
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| CN2834120Y (en) * | 2005-09-07 | 2006-11-01 | 中国科学院工程热物理研究所 | Natural air-cooled passive circulating micro-grooves phase change heat radiation system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413794A (en) * | 2013-08-16 | 2013-11-27 | 中国科学院深圳先进技术研究院 | Radiating packaging structure of semiconductor power device |
| CN104780736A (en) * | 2014-01-13 | 2015-07-15 | 潘晨曦 | Motor controller |
| CN104780736B (en) * | 2014-01-13 | 2018-05-25 | 潘晨曦 | Electric machine controller |
| CN105530799A (en) * | 2014-10-21 | 2016-04-27 | 日信工业株式会社 | Vehicle control device and vehicle brake system |
| CN106231871A (en) * | 2016-08-23 | 2016-12-14 | 山东时风（集团）有限责任公司 | A kind of heat abstractor of electric vehicle controller |
| CN106304781A (en) * | 2016-08-23 | 2017-01-04 | 山东时风（集团）有限责任公司 | A kind of electric vehicle controller of band capillary radiator structure |
| CN106231871B (en) * | 2016-08-23 | 2018-04-20 | 山东时风（集团）有限责任公司 | A kind of radiator of electric vehicle controller |
| CN106304781B (en) * | 2016-08-23 | 2018-09-28 | 山东时风（集团）有限责任公司 | A kind of electric vehicle controller with capillary radiator structure |
| CN110058663A (en) * | 2018-01-18 | 2019-07-26 | 阮琳 | A kind of radiator and the electronic equipment with the radiator |
| CN108848658A (en) * | 2018-08-17 | 2018-11-20 | 中国科学院电工研究所 | A kind of controller inside cooling structure |
| CN112328021A (en) * | 2020-11-06 | 2021-02-05 | 浪潮电子信息产业股份有限公司 | Server and internal exposure heat dissipation structure thereof |
| CN113864743A (en) * | 2021-10-21 | 2021-12-31 | 中国科学院工程热物理研究所 | Photo-thermal integrated radiator |
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Effective date of registration: 20200430 Address after: Room a-207, office building, Shenzhen Institute of advanced technology, Chinese Academy of Sciences, No. 1068, Xueyuan Avenue, Shenzhen University City, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen advanced science and technology Cci Capital Ltd Address before: 1068 No. 518055 Guangdong city in Shenzhen Province, Nanshan District City Xili University School Avenue Patentee before: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES |
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Effective date of registration: 20210414 Address after: Room 306, building 4, future venture Plaza, hi tech Zone, Jinan City, Shandong Province Patentee after: Shandong Zhongke Advanced Technology Research Institute Co.,Ltd. Address before: Room a-207, office building, Shenzhen Institute of advanced technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Nanshan District, Shenzhen, Guangdong 518055 Patentee before: Shenzhen advanced science and technology Cci Capital Ltd. |