CN108615957A - The shape battery group method that liquid cooling/heating and fin conduct heat compound - Google Patents
The shape battery group method that liquid cooling/heating and fin conduct heat compound Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 63
- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 title claims abstract description 6
- 150000001875 compounds Chemical class 0.000 title 1
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000012782 phase change material Substances 0.000 claims abstract description 9
- 238000012546 transfer Methods 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 separators Substances 0.000 description 1
- 238000010792 warming 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
- 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
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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
- H01M10/62—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
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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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
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
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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
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
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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
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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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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Abstract
液体冷却/加热和翅片传热复合的形电池成组方法涉及电池的热管理领域。针对圆柱形电池设计了一种符合国内电动汽车液体冷却/加热和翅片传热的复合成组方法。本方法将翅片按照电池排列方式和冷却管布置方式开孔。通过翅片上的安装孔在电池和换热管上布置一定数量的翅片，冷却电池时可以在翅片的间隙填充一定量相变材料。本方法通过翅片增大了换热面积利用管内的液体对电池进行冷却或加热。该方法易于根据热管理设计需求调整翅片的数量和间距以及相变材料的用量，增加了电池与换热管间的换热面积，从而增强液体与电池的换热效果，提高了电池温度的均匀性，延长电池系统的寿命。液体与电池通过翅片实现间接式换热，能够提高电池系统的安全性。
The method of forming a battery group by combining liquid cooling/heating and fin heat transfer relates to the field of thermal management of batteries. A composite grouping method that complies with domestic electric vehicle liquid cooling/heating and fin heat transfer is designed for cylindrical batteries. In this method, the fins are perforated according to the arrangement of batteries and the arrangement of cooling pipes. A certain number of fins are arranged on the battery and the heat exchange tube through the installation holes on the fins, and a certain amount of phase change material can be filled in the gaps of the fins when cooling the battery. In this method, the heat exchange area is increased through the fins, and the liquid in the tube is used to cool or heat the battery. This method is easy to adjust the number and spacing of fins and the amount of phase change material according to the design requirements of thermal management, which increases the heat exchange area between the battery and the heat exchange tube, thereby enhancing the heat exchange effect between the liquid and the battery, and improving the temperature of the battery. Uniformity, prolonging the life of the battery system. The liquid and the battery realize indirect heat exchange through the fins, which can improve the safety of the battery system.
Description
技术领域technical field
本发明涉及纯电动汽车(纯电动汽车、混合动力汽车)电池热管理领域。The invention relates to the field of thermal management of batteries of pure electric vehicles (pure electric vehicles, hybrid electric vehicles).
背景技术Background technique
在能源危机、全球变暖、环境污染等环境问题不断加剧的情况下，电动汽车越来越成为未来汽车的发展方向。随着电动汽车研究的深入，电池作为电动汽车的一个关键部件逐渐成为研究的热点，而电池性能的好坏则是电动汽车发展的一个重要因素。In the context of energy crisis, global warming, environmental pollution and other environmental problems, electric vehicles are increasingly becoming the development direction of future automobiles. With the deepening of electric vehicle research, batteries, as a key component of electric vehicles, have gradually become a research hotspot, and the performance of batteries is an important factor in the development of electric vehicles.
影响电池的主要因素有充放电倍率、充放电截止电压、搁置条件、使用温度等，这几个因素相互制约，相互影响。但就使用温度而言，目前的电池单体在低温(小于-30℃)和高温(大于50℃)的环境下都无法正常工作，导致以电池为能量来源的车辆此时也无法正常工作，使车辆无法达到全天候运行的要求，和传统汽车相比其使用有较大的局限性。The main factors affecting the battery are charge-discharge rate, charge-discharge cut-off voltage, storage conditions, operating temperature, etc. These factors restrict and influence each other. However, as far as the operating temperature is concerned, the current battery cells cannot work normally in low temperature (less than -30°C) and high temperature (greater than 50°C) environments, resulting in vehicles that use batteries as energy sources not working properly at this time. The vehicle cannot meet the requirements of all-weather operation, and its use has greater limitations compared with traditional cars.
另外，电动汽车在启动爬坡或者突然加速时，中间位置的电池积累热量，电池温度急剧上升，电池电极材料、隔膜以及电解液等将发生分解，产生气体增大电池内部气压，产生热失控现象。情况严重时，甚至会引起液体泄漏，发生爆炸等严重事故，给车辆的运行造成了安全隐患。使用温度问题的存在严重制约了电动汽车的发展和推广，因此，电池温度控制目前已经成为新能源汽车发展的瓶颈。如何将电池温度控制在一定的范围内仍是一个短期内难以解决的难题。In addition, when an electric vehicle starts uphill or accelerates suddenly, the battery in the middle position accumulates heat, and the battery temperature rises sharply. The battery electrode materials, separators, and electrolytes will decompose, and gas will be generated to increase the internal pressure of the battery, resulting in thermal runaway. . When the situation is serious, it will even cause serious accidents such as liquid leakage and explosion, which will cause potential safety hazards to the operation of the vehicle. The existence of temperature problems seriously restricts the development and promotion of electric vehicles. Therefore, battery temperature control has become a bottleneck in the development of new energy vehicles. How to control the battery temperature within a certain range is still a problem that is difficult to solve in the short term.
发明内容Contents of the invention
本文针对动力电池设计了一种液体冷却/加热和翅片传热复合的成组方法。该方法易于根据热管理设计需求调整散热翅片的数量和间距以及相变材料的用量，增加了电池与换热管间的换热面积，从而增强液体与电池的换热效果，提高了电池温度的均匀性，延长电池系统的寿命。液体与电池通过散热翅片实现间接式换热，能够提高电池系统的安全性。该方法对圆柱形电池和方形电池均使适用。In this paper, a combined method of liquid cooling/heating and fin heat transfer is designed for power batteries. This method is easy to adjust the number and spacing of heat dissipation fins and the amount of phase change material according to the design requirements of thermal management, which increases the heat exchange area between the battery and the heat exchange tube, thereby enhancing the heat exchange effect between the liquid and the battery and increasing the battery temperature. Uniformity, prolonging the life of the battery system. The liquid and the battery realize indirect heat exchange through the cooling fins, which can improve the safety of the battery system. This method is applicable to both cylindrical and prismatic batteries.
进一步，电池安装孔和换热管安装孔的开孔位置、尺寸、数量根据电池模块设计需求确定。Further, the location, size, and quantity of the battery mounting holes and the heat exchange tube mounting holes are determined according to the design requirements of the battery module.
进一步，装置设有分液器和集液器。分液器底部设有换热管连接口，侧面设有液体进口，所述液体进口与循环泵连接；集液器顶部设有换热管连接口，侧面设有液体出口。Further, the device is provided with a liquid distributor and a liquid collector. The bottom of the liquid separator is provided with a heat exchange tube connection port, and the side is provided with a liquid inlet, and the liquid inlet is connected with a circulation pump; the top of the liquid collector is provided with a heat exchange tube connection port, and the side is provided with a liquid outlet.
进一步，在填充相变材料时，保证与电池和换热管接触。Further, when filling the phase change material, it is guaranteed to be in contact with the battery and the heat exchange tube.
进一步，分液器外敷保温层。Further, the liquid separator is covered with an insulation layer.
进一步，换热管与分液器和集液器的连接口连接时，超出连接口一定距离。Furthermore, when the heat exchange tube is connected to the connection port of the liquid separator and the liquid collector, it exceeds the connection port by a certain distance.
进一步，换热管与翅片、分液器冷却管连接口及集液器冷却管连接口的连接处沿轴向均匀设有高导热硅胶。Furthermore, high thermal conductivity silica gel is evenly provided along the axial direction at the joints between the heat exchange tubes and the fins, the connection port of the liquid separator cooling pipe and the connection port of the liquid collector cooling pipe.
本方法将翅片按照电池排列方式和换热管布置方式开孔，通过翅片上的安装孔在电池和换热管上布置一定数量的翅片，换热管内的液体与电池通过翅片实现间接式换热。装置设有分液器和集液器：分液器底部设有换热管连接口，侧面设有液体进口，所述液体进口与循环泵连接；集液器顶部设有换热管连接口，侧面设有液体出口。分液器外敷保温层。换热管与分液器和集液器的连接口连接时，超出连接口一定距离。换热管与翅片、分液器冷却管连接口及集液器换热管连接口的连接处沿轴向均匀设有高导热硅胶。In this method, the fins are opened according to the arrangement of the batteries and the heat exchange tubes, and a certain number of fins are arranged on the batteries and the heat exchange tubes through the installation holes on the fins. The liquid in the heat exchange tubes and the batteries are indirect through the fins. type heat exchange. The device is equipped with a liquid separator and a liquid collector: the bottom of the liquid separator is provided with a heat exchange tube connection port, and the side is provided with a liquid inlet, which is connected to the circulation pump; the top of the liquid collector is provided with a heat exchange tube connection port, There is a liquid outlet on the side. The liquid separator is covered with insulation layer. When the heat exchange tube is connected to the connection port of the liquid separator and the liquid collector, it exceeds a certain distance from the connection port. The joints between the heat exchange tubes and the fins, the connection port of the liquid separator cooling tube and the connection port of the liquid collector heat exchange tube are evenly provided with high thermal conductivity silica gel along the axial direction.
图1为装置二维结构示意图。Figure 1 is a schematic diagram of the two-dimensional structure of the device.
图2为翅片结构示意图。Figure 2 is a schematic diagram of the fin structure.
图3为结构三维结构示意图。Figure 3 is a schematic diagram of the three-dimensional structure of the structure.
图4为换热管连接口连接示意图。Fig. 4 is a schematic diagram of the connection of the connection port of the heat exchange tube.
图5为填充相变材料示意图Figure 5 is a schematic diagram of filling phase change materials
图6为相变材料Figure 6 is a phase change material
这里选择圆柱形电池表示该方法的示意图A cylindrical cell is chosen here to represent a schematic diagram of the method
其中：in:
1.分液器冷却管连接口 2.分液器 3.冷却介质入口1. Liquid separator cooling pipe connection port 2. Liquid separator 3. Cooling medium inlet
4.冷却管 5.散热翅片 6.集液器冷却管连接口4. Cooling pipe 5. Cooling fins 6. Liquid collector cooling pipe connection port
7.冷却介质出口 8.圆柱形锂离子电池 9.集液器7. Cooling medium outlet 8. Cylindrical Li-ion battery 9. Liquid collector
10.冷却管安装孔 11.电池安装孔 12.相变材料10. Cooling pipe installation hole 11. Battery installation hole 12. Phase change material
具体实施方式Detailed ways
本发明的实施例如图1、图2、图3、图4、图5、图6所示。Embodiments of the present invention are shown in Fig. 1 , Fig. 2 , Fig. 3 , Fig. 4 , Fig. 5 and Fig. 6 .
本发明针对动力电池，设计了一种液体冷却/加热和翅片传热复合的成组方法。该方法将翅片按照电池排列方式和换热管布置方式开孔，通过翅片上的安装孔在电池和换热管上布置一定数量的翅片，翅片的数量和间距可根据电池模块的技术要求确定。冷却电池是可以在翅片的间隙填充相变材料。装置设有分液器和集液器：分液器底部设有换热管连接口，侧面设有液体进口，所述液体进口与循环泵连接；集液器顶部设有换热管连接口，侧面设有液体出口。集液器流出的高温冷却介质可以利用新能源汽车的空调系统进行冷却，也可以采用风冷方式进行冷却。集液器外敷保温层以避免冷量散失。换热管与分液器和集液器的连接口连接时，超出连接口一定距离，以保证液体的均衡分配，从而保证电池模块温度的一致性。换热管与散热翅片和换热管连接口连接时，为避免出现接触热阻影响换热效果，在换热管与翅片、分液器连接口及集液器连接口的连接处沿轴向均匀设有高导热硅胶。Aiming at power batteries, the present invention designs a combined group method of liquid cooling/heating and fin heat transfer. In this method, the fins are opened according to the battery arrangement and the heat exchange tube arrangement, and a certain number of fins are arranged on the battery and heat exchange tubes through the installation holes on the fins. The number and spacing of the fins can be determined according to the technology of the battery module. Ask to be sure. To cool the battery, phase-change materials can be filled in the gaps of the fins. The device is equipped with a liquid separator and a liquid collector: the bottom of the liquid separator is provided with a heat exchange tube connection port, and the side is provided with a liquid inlet, which is connected to the circulation pump; the top of the liquid collector is provided with a heat exchange tube connection port, There is a liquid outlet on the side. The high-temperature cooling medium flowing out of the liquid collector can be cooled by the air-conditioning system of the new energy vehicle, or it can be cooled by air cooling. The liquid collector is covered with an insulating layer to avoid loss of cold. When the heat exchange tube is connected to the connection port of the liquid distributor and the liquid collector, the distance beyond the connection port is certain to ensure the balanced distribution of the liquid, thereby ensuring the consistency of the temperature of the battery module. When the heat exchange tube is connected to the cooling fin and the connection port of the heat exchange tube, in order to avoid the contact thermal resistance affecting the heat exchange effect, a Axially evenly equipped with high thermal conductivity silica gel.
本方法中，分液器、集液器及换热管的材质可采用导热系数较高的铜，翅片采用铜翅片或铝翅片。所述液体冷却介质类型不限，优先选择导热系数大、粘度小的冷却介质。In this method, the material of the liquid separator, the liquid collector and the heat exchange tube can be copper with high thermal conductivity, and the fins can be copper fins or aluminum fins. The type of the liquid cooling medium is not limited, and the cooling medium with high thermal conductivity and low viscosity is preferred.
Claims (5)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737379A (en) * | 2019-01-22 | 2019-05-10 | 臧涛 | A kind of pendant superheater |
| CN110380157A (en) * | 2019-08-21 | 2019-10-25 | 湘潭大学 | A kind of battery thermal management system coupled based on liquid cooling and phase-change thermal storage |
| CN112510285A (en) * | 2020-11-30 | 2021-03-16 | 南通路远科技信息有限公司 | Heat dissipation method and device for vehicle battery module |
| CN113054279A (en) * | 2021-02-09 | 2021-06-29 | 杭州易斐换热技术有限公司 | Battery heat exchanger and preparation method thereof |
| CN113067054A (en) * | 2021-03-26 | 2021-07-02 | 燕山大学 | Battery based on phase-change material coupling fin and battery thermal management system thereof |
| CN113517498A (en) * | 2021-05-10 | 2021-10-19 | 南昌大学 | A liquid-cooled lithium battery cooling module |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737379A (en) * | 2019-01-22 | 2019-05-10 | 臧涛 | A kind of pendant superheater |
| CN109737379B (en) * | 2019-01-22 | 2020-10-30 | 嘉兴麦瑞网络科技有限公司 | Screen type superheater |
| CN110380157A (en) * | 2019-08-21 | 2019-10-25 | 湘潭大学 | A kind of battery thermal management system coupled based on liquid cooling and phase-change thermal storage |
| CN112510285A (en) * | 2020-11-30 | 2021-03-16 | 南通路远科技信息有限公司 | Heat dissipation method and device for vehicle battery module |
| CN113054279A (en) * | 2021-02-09 | 2021-06-29 | 杭州易斐换热技术有限公司 | Battery heat exchanger and preparation method thereof |
| CN113067054A (en) * | 2021-03-26 | 2021-07-02 | 燕山大学 | Battery based on phase-change material coupling fin and battery thermal management system thereof |
| CN113067054B (en) * | 2021-03-26 | 2022-08-26 | 燕山大学 | Battery based on phase-change material coupling fin and battery thermal management system thereof |
| CN113517498A (en) * | 2021-05-10 | 2021-10-19 | 南昌大学 | A liquid-cooled lithium battery cooling module |
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