CN106784441A - It is a kind of for the radiating case lid of electric automobile battery box and its application - Google Patents
It is a kind of for the radiating case lid of electric automobile battery box and its application Download PDFInfo
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- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000009833 condensation Methods 0.000 claims abstract description 21
- 230000005494 condensation Effects 0.000 claims abstract description 21
- 238000009835 boiling Methods 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 4
- 239000000956 alloy Substances 0.000 claims 1
- 238000002309 gasification Methods 0.000 claims 1
- 238000001727 in vivo Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 22
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000004781 supercooling Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000000605 extraction Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6562—Gases with free flow by convection only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
本发明公开了一种用于电动汽车电池箱的散热箱盖及其应用。散热面(1)和冷凝面(4)相对设置，散热面(1)和冷凝面(4)由围板(11)连接构成封闭的液体工质空间(3)，液体工质空间(3)内装有取热介质；散热面(1)上处于液体工质空间(3)的内侧设置有多条大小适合形成毛细力的微槽道，多条微槽道构成微槽群，冷凝面(4)由多条肋片(10)平行密排串联形成，冷凝面(4)构成箱盖顶面。取热介质在微槽群受热蒸发，形成蒸汽，并带走电池箱传递来的热量，蒸汽上升，遇冷凝面上的肋片，液化凝结，凝结液在重力的作用下回到取热结构，形成一个对外封闭的微负压循环系统。本发明具有超导热能力，冷却能力超强，可靠性强，同时体积小，质量轻，无功率能耗，环保节能。
The invention discloses a radiator box cover for an electric vehicle battery box and an application thereof. The radiating surface (1) and the condensing surface (4) are arranged oppositely, and the radiating surface (1) and the condensing surface (4) are connected by a shroud (11) to form a closed liquid working medium space (3), and the liquid working medium space (3) A heat-taking medium is installed inside; on the inner side of the liquid working medium space (3) on the heat dissipation surface (1), there are multiple micro-grooves with a size suitable for forming capillary force, and the micro-grooves form a micro-groove group, and the condensation surface (4 ) is formed by a plurality of ribs (10) parallel and closely arranged in series, and the condensation surface (4) constitutes the top surface of the box cover. The heat-taking medium is heated and evaporated in the micro-groove group, forming steam, and taking away the heat transferred from the battery box, the steam rises, meets the fins on the condensation surface, liquefies and condenses, and the condensate returns to the heat-taking structure under the action of gravity, Form an externally closed micro-negative pressure circulation system. The invention has super heat conduction capacity, super cooling capacity, strong reliability, small volume, light weight, no power consumption, environmental protection and energy saving.
Description
技术领域technical field
本发明涉及一种散热箱盖，特别是涉及一种用于电动汽车电池箱的散热箱盖。本发明还涉及该用于电动汽车电池箱的散热箱盖的应用。The invention relates to a heat dissipation box cover, in particular to a heat dissipation box cover used for a battery box of an electric vehicle. The invention also relates to the application of the cooling box cover for the battery box of an electric vehicle.
背景技术Background technique
随着石油资源的匮乏以及人们环保意识的提高，越来越严苛的排放标准已经成为汽车行业亟需面对的新问题。新能源汽车越来越成为汽车企业关注的焦点，奔驰和大众都把企业未来发展的重心放在了电动车领域，甚至都不约而同地开启了单独的全新子品牌，以新能源为核心的战略布局已经成为全球汽车巨头的竞争方向，尤其是对电动汽车的开发研究。电动汽车电池组由多个电池串联叠置组成，是电动汽车的主要能量存储单元和驱动车辆的动力源。目前我国大多数电动汽车都是以锂电池作为动力电池的主要原材料。锂离子电池对温度变化十分敏感，尤其是现有电动汽车上运用的大容量、高功率锂离子电池，动力电池工作电流大，产热量大，同时电池包处于一个相对封闭的环境，就会导致电池的温度上升。电池材料的工作温度都不得高于60℃，但现在室外温度已接40℃，同时电池本身产热量大，将导致电池的工作环境温度上升，而且由于车辆上的安装空间有限，电动汽车所需的电池数量又较大，故现有的电池单体均为紧密排列连接，不利于散热。而如果出现热失控，情况将十分危险了。为了避免变成“烧烤”，给电池散热就尤为重要了。With the shortage of oil resources and the improvement of people's awareness of environmental protection, increasingly stringent emission standards have become a new problem that the automotive industry needs to face. New energy vehicles have increasingly become the focus of attention of auto companies. Both Mercedes-Benz and Volkswagen have focused their future development on the field of electric vehicles, and have even launched separate new sub-brands, with new energy as the core strategic layout. It has become the competitive direction of global auto giants, especially the development and research of electric vehicles. The electric vehicle battery pack is composed of multiple batteries stacked in series, which is the main energy storage unit of electric vehicles and the power source for driving vehicles. At present, most electric vehicles in my country use lithium batteries as the main raw material for power batteries. Lithium-ion batteries are very sensitive to temperature changes, especially the large-capacity and high-power lithium-ion batteries used in existing electric vehicles. The power battery has a large operating current and generates a large amount of heat. At the same time, the battery pack is in a relatively closed environment, which will cause The temperature of the battery rises. The working temperature of battery materials should not be higher than 60°C, but now the outdoor temperature has reached 40°C, and the heat generated by the battery itself will cause the temperature of the working environment of the battery to rise, and because the installation space on the vehicle is limited, electric vehicles require The number of batteries is relatively large, so the existing battery cells are closely arranged and connected, which is not conducive to heat dissipation. And if thermal runaway occurs, the situation will be very dangerous. In order to avoid becoming a "grill", it is especially important to cool the battery.
现有技术电池包散热有主动和被动两种，两者之间在效率上有很大的差别。被动系统所要求的成本比较低，采取的措施也较简单。主动系统结构相对复杂一些，且需要更大的附加功率，但它的热管理更加有效。不同传热介质的散热效果不同，空冷和液冷各有优劣。采用气体(空气)作为传热介质的主要优点有：结构简单，质量轻，有害气体产生时能有效通风，成本较低；不足之处在于：与电池壁面之间换热系数低，冷却速度慢，效率低。目前应用较多。采用液体作为传热介质的主要优点有：与电池壁面之间换热系数高，冷却速度快；不足之处在于：密封性要求高，质量相对较大，维修和保养复杂，需要水套、换热器等部件，结构相对复杂。In the prior art, there are two types of heat dissipation for battery packs: active and passive, and there is a great difference in efficiency between the two. The cost required by the passive system is relatively low, and the measures taken are relatively simple. The active system structure is relatively complex and requires more additional power, but its thermal management is more effective. Different heat transfer media have different heat dissipation effects, and air cooling and liquid cooling have their own advantages and disadvantages. The main advantages of using gas (air) as the heat transfer medium are: simple structure, light weight, effective ventilation when harmful gases are generated, and low cost; the disadvantages are: low heat transfer coefficient with the battery wall and slow cooling speed ,low efficiency. There are many applications at present. The main advantages of using liquid as the heat transfer medium are: high heat transfer coefficient with the battery wall and fast cooling speed; the disadvantages are: high sealing requirements, relatively large quality, complicated repair and maintenance, requiring water jacket, replacement Heater and other parts, the structure is relatively complex.
发明内容Contents of the invention
本发明所要解决的第一个技术问题是提供一种既能对电池箱起到高效散热效果、结构又相对简单、易于维修和保养的用于电动汽车电池箱的散热箱盖。The first technical problem to be solved by the present invention is to provide a cooling box cover for the battery box of an electric vehicle, which can not only have an efficient heat dissipation effect on the battery box, but also has a relatively simple structure and is easy to repair and maintain.
本发明所要解决的第二个技术问题是提供一种该用于电动汽车电池箱的散热箱盖的应用。The second technical problem to be solved by the present invention is to provide an application of the radiator cover for the electric vehicle battery box.
为了解决上述第一个技术问题，本发明提供的用于电动汽车电池箱的散热箱盖，包括相对设置的散热面和冷凝面，所述的散热面和所述的冷凝面由围板连接构成封闭的液体工质空间，所述的液体工质空间内装有取热介质；所述的散热面上设置有多条大小适合形成毛细力的微槽道，多条所述的微槽道构成微槽群，所述的冷凝面由多条肋片平行密排串联形成，所述的冷凝面构成箱盖顶面。In order to solve the above-mentioned first technical problem, the heat dissipation box cover for the battery box of an electric vehicle provided by the present invention includes a heat dissipation surface and a condensation surface arranged oppositely, and the heat dissipation surface and the condensation surface are connected by a shroud A closed liquid working medium space, the liquid working medium space is equipped with a heat-taking medium; the heat dissipation surface is provided with a plurality of micro-channels with a size suitable for forming capillary force, and the plurality of micro-channels form micro-channels. The trough group, the condensation surface is formed by a plurality of parallel ribs closely arranged in series, and the condensation surface constitutes the top surface of the box cover.
所述的微槽道为矩形微槽道。The microchannel is a rectangular microchannel.
所述的冷凝面构成的箱盖顶面上方装有散热风扇。A cooling fan is installed above the top surface of the box cover formed by the condensation surface.
所述的液体工质空间在抽成真空后装有易气化的取热介质。The liquid working medium space is equipped with a heat-taking medium that is easy to vaporize after being evacuated.
所述的取热介质为液体，其沸点不小于电池箱体内设备正常工作温度值，或对所述的液体工质空间中的压强进行调整，使取热介质的沸点不小于电池箱内设备正常工作时的温度值。The heat extraction medium is liquid, and its boiling point is not less than the normal operating temperature value of the equipment in the battery box, or the pressure in the liquid working medium space is adjusted so that the boiling point of the heat extraction medium is not less than the normal operating temperature of the equipment in the battery box. Temperature value at work.
连接所述的导热面和所述的冷凝面的所述的围板垂直于所述的冷凝面。The surrounding plate connecting the heat conducting surface and the condensing surface is perpendicular to the condensing surface.
所述的液体工质空间内的取热介质循环为内循环。The heat extraction medium circulation in the liquid working medium space is an internal circulation.
所述的冷凝面采用铝合金材料。The condensation surface is made of aluminum alloy.
所述的矩形微槽道的宽度为0.05mm-2mm，相邻的所述的矩形微槽道与所述的矩形微槽道之间的距离为2mm-5mm。The width of the rectangular microchannels is 0.05mm-2mm, and the distance between adjacent rectangular microchannels is 2mm-5mm.
为了解决上述第二个技术问题，本发明提供的用于电动汽车电池箱的散热箱盖的应用，电动汽车电池箱座装有固定单体电池的卡扣，用于固定电动汽车电池箱内的所述的单体电池；所述的单体电池与所述的单体电池的间隙有用于绝缘导热的绝缘导热介质，所述的绝缘导热介质及时将电动汽车电池箱里面的热量传导至箱盖的所述的导热面。In order to solve the above-mentioned second technical problem, the application of the heat dissipation box cover for the electric vehicle battery box provided by the present invention, the battery box seat of the electric vehicle is equipped with a buckle for fixing the single battery, which is used to fix the battery box in the electric vehicle battery box. The single battery; the gap between the single battery and the single battery has an insulating and heat-conducting medium for insulation and heat conduction, and the insulating and heat-conducting medium conducts the heat in the battery box of the electric vehicle to the box cover in time of the thermally conductive surface.
采用上述技术方案的用于电动汽车电池箱的散热箱盖及其应用，散热面上设置有大小适合形成毛细力的矩形微槽道，构成微槽群，微槽道内的液体工质在导热器的导热面上受热形成高强度蒸发以此带走箱体内传导上来的热量，从而使发热体蒸发冷却。冷凝面由多条肋片串联成箱盖顶面，肋片平行密排。这种平行密排的肋片结构增加了冷却的表面积，极大提高了冷却效率。取热介质为液体，其沸点不小于电池箱体内设备正常工作温度值，或通过对液体工质空间中的压强进行调整，使取热介质的沸点不小于电池箱内设备正常工作时的温度值。电动汽车电池箱座装有固定单体电池卡扣，用于固定箱体内单体电池。单体电池与单体电池的间隙有用于绝缘导热的介质，能及时将箱体里面的热量传导至箱盖导热器。The heat dissipation box cover for electric vehicle battery box and its application adopting the above technical scheme, the heat dissipation surface is provided with rectangular micro-grooves with a size suitable for forming capillary force, forming a micro-groove group, and the liquid working medium in the micro-groove is in the heat conductor The heat-conducting surface is heated to form high-intensity evaporation to take away the heat conducted up from the box, so that the heating element evaporates and cools. The condensing surface is connected in series by a plurality of fins to form the top surface of the case cover, and the fins are parallel and densely arranged. This parallel close-packed fin structure increases the cooling surface area and greatly improves the cooling efficiency. Take the heat medium as a liquid, and its boiling point is not less than the normal working temperature of the equipment in the battery box, or adjust the pressure in the liquid working medium space so that the boiling point of the heat medium is not less than the normal working temperature of the equipment in the battery box . The battery box seat of the electric vehicle is equipped with a buckle for fixing the single battery, which is used to fix the single battery in the box. The gap between the single battery and the single battery has a medium for insulation and heat conduction, which can conduct the heat inside the box to the heat spreader of the box cover in time.
本发明所达到的有益效果：The beneficial effect that the present invention reaches:
1、超导热能力：本发明具有超导热能力，其导热能力远远高于采用气体(空气)作为传热介质的风冷和普通管路的水冷结构，微槽群复合相变技术能把电池箱内设备的热量及时送到散热的冷凝多条肋片的箱盖顶部散发出去。1. Super thermal conductivity: the present invention has super thermal conductivity, and its thermal conductivity is much higher than that of the air-cooled and ordinary pipeline water-cooled structures that use gas (air) as the heat transfer medium. The microgroove group composite phase change technology can The heat of the equipment in the battery box is sent to the top of the box cover with multiple ribs for cooling and radiating in time to dissipate.
2、冷却能力超强：在真空的液体工质空间，水在常温甚至是低温下，蒸发速度快，能达到极高的取热热流密度，比强制风冷和管路水冷高很多。2. Super cooling capacity: In the vacuum liquid working medium space, water evaporates quickly at room temperature or even low temperature, and can achieve extremely high heat extraction and heat flux density, which is much higher than forced air cooling and pipeline water cooling.
3、无功耗冷却：被动式散热，无需风扇或水泵，无冷却能耗，无动力运行，节约能源。微槽群复合相变导热面巧妙利用电池箱内元件发热的能量使取热介质蒸发产生动能和势能，蒸气流动到冷凝面放热冷凝成液体，借助导热面的微槽群的毛细力和液体重力回流到与电池箱盖底面紧贴的导热面，从而实现无外加动力的闭式散热循环。3. Cooling without power consumption: Passive heat dissipation, no need for fans or water pumps, no cooling energy consumption, no power operation, saving energy. The micro-groove composite phase-change heat-conducting surface cleverly uses the energy generated by the components in the battery box to evaporate the heat-taking medium to generate kinetic energy and potential energy. The vapor flows to the condensation surface to release heat and condense into a liquid. With the help of the micro-groove group on the heat-conducting surface and the liquid The gravity returns to the heat conduction surface that is close to the bottom surface of the battery box cover, thereby realizing a closed heat dissipation cycle without external power.
4、可靠性强：该电池箱盖装置简洁紧凑，工作稳定，无启动问题，且可循环往复利用，无需定时更换。其一体化结构，置换方便，比风扇和水套结构可靠性强。4. Strong reliability: The battery box cover device is simple and compact, works stably, has no starting problems, and can be recycled and used without regular replacement. Its integrated structure is easy to replace and more reliable than fan and water jacket structures.
5、成本低、环保：成本小于水套结构的散热器，能循环利用，使用环境广，且基本无损耗。5. Low cost and environmental protection: the cost is lower than that of the radiator with water jacket structure, it can be recycled, the use environment is wide, and there is basically no loss.
6、重量轻、体积小。6. Light weight and small size.
综上所述，本发明是一种既能对电池箱起到高效散热效果，结构又相对简单，易于维修和保养的用于电动汽车电池箱的散热箱盖及其应用。To sum up, the present invention is a heat dissipation box cover for electric vehicle battery box and its application, which can not only play a high-efficiency heat dissipation effect on the battery box, but also has a relatively simple structure and is easy to repair and maintain.
附图说明Description of drawings
图1是本发明的立体结构示意图。Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.
图2是本发明的微槽道结构示意图。Fig. 2 is a schematic diagram of the micro-channel structure of the present invention.
图3是本发明的内部散热箱盖剖视图。Fig. 3 is a sectional view of the inner radiator tank cover of the present invention.
图4是本发明的电池箱体剖视图。Fig. 4 is a sectional view of the battery case of the present invention.
图中：1-导热面；2-矩形微槽道；3-液体工质空间；4-冷凝面；5-散热风扇；6-电动汽车电池箱座；7-卡扣；8-单体电池；9-绝缘导热介质；10-肋片；11-围板。In the figure: 1-heat conduction surface; 2-rectangular micro channel; 3-liquid working medium space; 4-condensing surface; 5-cooling fan; 6-electric vehicle battery box seat; ; 9-insulating and heat-conducting medium; 10-fins; 11-shroud.
具体实施方式detailed description
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
如图1和图2所示，本发明提供的用于电动汽车电池箱的散热箱盖，包括相对设置的散热面1和冷凝面4，散热面1和冷凝面4由围板11连接构成封闭的液体工质空间3，液体工质空间3内装有取热介质。散热面1上设置有多条大小适合形成毛细力的矩形微槽道2，多条矩形微槽道2构成微槽群。散热面1上的矩形微槽道2的宽度为0.05mm-2mm，相邻的矩形微槽道2与矩形微槽道2之间的距离为2mm-5mm。矩形微槽道2由激光束加工而成。矩形微槽道2内的液体工质在导热面1上受热形成高强度蒸发以此带走箱体内传导上来的热量，从而使发热体蒸发冷却。冷凝面4由多条肋片10串联形成，冷凝面4构成箱盖顶面，多条肋片10平行密排。这种多条平行密排的肋片10的结构增加了冷却的表面积，极大提高了冷却效率。As shown in Fig. 1 and Fig. 2, the heat dissipation box cover for the electric vehicle battery box provided by the present invention includes a heat dissipation surface 1 and a condensation surface 4 arranged oppositely, and the heat dissipation surface 1 and the condensation surface 4 are connected by a shroud 11 to form a seal The liquid working medium space 3 is equipped with a heat-taking medium in the liquid working medium space 3. The heat dissipation surface 1 is provided with a plurality of rectangular micro-grooves 2 whose size is suitable for forming capillary force, and the plurality of rectangular micro-grooves 2 form a micro-groove group. The width of the rectangular micro-channels 2 on the cooling surface 1 is 0.05mm-2mm, and the distance between adjacent rectangular micro-channels 2 is 2mm-5mm. The rectangular micro-groove 2 is processed by laser beam. The liquid working medium in the rectangular micro-channel 2 is heated on the heat conduction surface 1 to form high-intensity evaporation to take away the heat conducted in the box, so that the heating element evaporates and cools down. The condensation surface 4 is formed by a plurality of fins 10 connected in series, the condensation surface 4 constitutes the top surface of the case cover, and the plurality of fins 10 are closely arranged in parallel. The structure of multiple parallel and close-arranged fins 10 increases the cooling surface area and greatly improves the cooling efficiency.
液体工质空间3填充易气化的液体介质，由于在真空条件下，水的沸点低，比如在密封的容器里制造6毫米汞柱的真空条件，水的沸点只有4℃。而电池材料的工作温度都不得高于60℃，室外温度最高接近40℃，同时考虑电池本身产热量大，将导致电池的工作环境温度上升，在维持电动汽车电池工作的温度下，利用水做矩形微槽道2的取热介质经济划算，且能满足要求。The liquid working medium space 3 is filled with a liquid medium that is easy to vaporize. Since the boiling point of water is low under vacuum conditions, for example, the boiling point of water is only 4° C. if a vacuum condition of 6 mmHg is produced in a sealed container. The working temperature of the battery material must not be higher than 60°C, and the outdoor temperature is as high as 40°C. At the same time, considering the high heat generated by the battery itself, the temperature of the working environment of the battery will rise. The heat extraction medium of the rectangular microchannel 2 is economical and cost-effective, and can meet the requirements.
取热介质为液体，其沸点不小于电池箱体内设备正常工作温度值，或通过对液体工质空间3中的压强进行调整，使取热介质的沸点不小于电池箱内设备正常工作时的温度值。The heat medium is taken as a liquid, and its boiling point is not less than the normal operating temperature of the equipment in the battery box, or the pressure in the liquid working medium space 3 is adjusted so that the boiling point of the heat medium is not less than the normal operating temperature of the equipment in the battery box value.
连接导热面1和冷凝面4的围板11垂直于冷凝面4。The shroud 11 connecting the heat conduction surface 1 and the condensation surface 4 is perpendicular to the condensation surface 4 .
液体工质空间3内的取热介质循环为内循环，冷凝面4采用铝合金材料。The heat extraction medium circulation in the liquid working medium space 3 is an internal circulation, and the condensation surface 4 is made of aluminum alloy.
参见图3，由多条肋片10串联形成的冷凝面4构成的箱盖顶面上方装有散热风扇5，增加气体流通速度，提高蒸汽冷凝效果。Referring to Fig. 3, a cooling fan 5 is installed above the top surface of the case cover formed by the condensation surface 4 formed by a plurality of fins 10 connected in series, so as to increase the gas flow rate and improve the steam condensation effect.
如图4所示，电动汽车电池箱座6装有固定单体电池8的卡扣7，用于固定电动汽车电池箱内的单体电池8。单体电池8与单体电池8的间隙有用于绝缘导热的绝缘导热介质9，能及时将电动汽车电池箱里面的热量传导至箱盖的导热面1。As shown in FIG. 4 , the battery box seat 6 of the electric vehicle is equipped with buckles 7 for fixing the single battery 8 for fixing the single battery 8 in the battery box of the electric vehicle. The gap between the single battery 8 and the single battery 8 has an insulating heat conduction medium 9 for insulation and heat conduction, which can conduct the heat in the battery box of the electric vehicle to the heat conduction surface 1 of the box cover in time.
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