技术领域technical field
本实用新型属于电动汽车动力电池技术领域，特别涉及一种轻量化的电动汽车锂离子动力电池热管理液冷系统。The utility model belongs to the technical field of electric vehicle power batteries, in particular to a light-weight electric vehicle lithium-ion power battery thermal management liquid cooling system.
背景技术Background technique
作为电动汽车的动力来源，电池的性能对于电动汽车的整体性能起到了至关重要的作用。锂离子动力电池的性能对温度的变化较为敏感，过高或过低的温度都会影响其阻抗、容量、循环效率、寿命等性能。为了让电池维持在一个适宜的温度范围(25℃~40℃)、控制电池包的最大温差(<5℃)，必须对动力电池进行热管理。As the power source of electric vehicles, the performance of batteries plays a vital role in the overall performance of electric vehicles. The performance of lithium-ion power batteries is more sensitive to temperature changes, too high or too low temperature will affect its impedance, capacity, cycle efficiency, life and other performance. In order to maintain the battery in a suitable temperature range (25°C~40°C) and control the maximum temperature difference of the battery pack (<5°C), thermal management must be performed on the power battery.
目前主要的热管理方式有：风冷、液冷、相变冷却等，其中，液冷方案具有换热系数高、冷却效果佳、泵功耗小等特点。一般来说，针对方形电池的液冷热管理方案，是用冷板与电池形成面接触以达到散热的目的，而对于圆柱形电池来说，传统冷板无法与圆柱形电池形成面接触，通常需要设计夹套结构以实现更好地散热。授权公告号为CN 206236763U的中国专利提供了一种锂离子动力电池组液冷管道装置，该装置为一个金属支架，支架中设置了电池安装孔，电池放入孔中即与金属支架形成面接触，以实现热管理。At present, the main thermal management methods are: air cooling, liquid cooling, phase change cooling, etc. Among them, the liquid cooling solution has the characteristics of high heat transfer coefficient, good cooling effect, and low power consumption of the pump. Generally speaking, the liquid-cooled thermal management solution for prismatic batteries is to use the cold plate to form surface contact with the battery to achieve the purpose of heat dissipation. For cylindrical batteries, the traditional cold plate cannot form surface contact with the cylindrical battery. The jacket structure needs to be designed to achieve better heat dissipation. The Chinese patent whose authorized notification number is CN 206236763U provides a liquid-cooled pipeline device for lithium-ion power battery packs. The device is a metal bracket, and a battery mounting hole is set in the bracket, and the battery is placed in the hole to form surface contact with the metal bracket. , for thermal management.
然而，在针对圆柱形电池的现有液冷方案中，不足之处在于，人们设置夹套结构时忽略了夹套结构以及整个液冷系统重量问题，液冷系统质量占比过大将会降低电池包比能量，从而缩短电动汽车的续航里程。However, in the existing liquid cooling solutions for cylindrical batteries, the disadvantage is that when people set up the jacket structure, the weight of the jacket structure and the entire liquid cooling system is ignored. If the mass ratio of the liquid cooling system is too large, it will reduce the battery capacity. Pack specific energy, thereby shortening the cruising range of electric vehicles.
实用新型内容Utility model content
为了克服现有液冷方案中液冷系统质量占比过大的技术不足，使电动汽车电池包轻量化，本实用新型提出了一种轻量化的电动汽车锂离子动力电池热管理液冷系统，该方案能在电池最高温度和温差得到有效控制的情况下，降低液冷系统本身的质量占比，使得电池包轻量化，增加电动车的续航里程。In order to overcome the technical deficiency of the excessive mass ratio of the liquid cooling system in the existing liquid cooling scheme, and to reduce the weight of the electric vehicle battery pack, this utility model proposes a lightweight electric vehicle lithium-ion power battery thermal management liquid cooling system, This solution can reduce the mass ratio of the liquid cooling system itself when the maximum temperature and temperature difference of the battery are effectively controlled, making the battery pack lightweight and increasing the cruising range of the electric vehicle.
为了达到上述目的，具体技术方案如下：In order to achieve the above object, the specific technical scheme is as follows:
一种轻量化的电动汽车锂离子动力电池热管理液冷系统，包括上、下设置的电池支架、固定在所述电池支架之间的电池组和电池控制单元，所述电池组包括若干行列分布的圆柱形电池，所述电池支架的上端和下端分别固定设置有上集液板和下集液板，相邻的所述圆柱形电池之间设置有与圆柱形电池面接触的空心导热片，所述空心导热片的上接口和下接口分别与上集液板和下集液板相连通。A light-weight electric vehicle lithium-ion power battery heat management liquid cooling system, including battery brackets arranged up and down, a battery pack fixed between the battery brackets and a battery control unit, the battery pack includes several rows and columns A cylindrical battery, the upper end and the lower end of the battery bracket are respectively fixed with an upper liquid collecting plate and a lower liquid collecting plate, and a hollow heat conducting sheet contacting the surface of the cylindrical battery is provided between the adjacent cylindrical batteries, The upper interface and the lower interface of the hollow heat conducting sheet communicate with the upper liquid collecting plate and the lower liquid collecting plate respectively.
优选地，所述的空心导热片的中心设置有液冷通道，两端分别设置有上接口和下接口，中部均匀设置有若干与所述圆柱形电池的圆周壁相贴合的弧面。Preferably, a liquid cooling channel is provided at the center of the hollow heat conducting sheet, an upper interface and a lower interface are respectively provided at both ends, and a number of arc surfaces that fit the circumferential wall of the cylindrical battery are evenly provided in the middle.
优选地，所述的空心导热片的材料为铝，所述上集液板和下集液板所用材料为工程塑料。Preferably, the material of the hollow heat conducting sheet is aluminum, and the material of the upper liquid collecting plate and the lower liquid collecting plate is engineering plastics.
优选地，所述的上集液板为第一盖板和第一底板相互紧密扣合而成的一体式结构，其内部供冷却流体流动；所述的下集液板为第二盖板和第二底板相互紧密扣合而成的一体式结构，其内部供冷却流体流动；所述上集液板设置有第一流体入口和第一流体出口，所述下集液板设置有第二流体入口和第二流体出口。Preferably, the upper liquid collecting plate is an integrated structure in which the first cover plate and the first bottom plate are tightly fastened to each other, and the cooling fluid flows inside; the lower liquid collecting plate is the second cover plate and the first bottom plate. The integrated structure of the second bottom plate is tightly fastened with each other, and the cooling fluid flows inside; the upper liquid collecting plate is provided with a first fluid inlet and a first fluid outlet, and the lower liquid collecting plate is provided with a second fluid inlet and second fluid outlet.
优选地，所述上集液板的第一底板上设有将内部分割为若干第一流入区域和若干第一流出区域的第一间隔-导流结构，所述的第一流入区域连通第一流体入口且均匀设置有若干连接部分所述空心导热片上接口的第一进液孔，所述第一流出区域连通第一流体出口且均匀设置有若干连接其余所述空心导热片上接口的第一出液孔；Preferably, the first bottom plate of the upper liquid collecting plate is provided with a first space-guiding structure that divides the interior into several first inflow areas and several first outflow areas, and the first inflow area communicates with the first The fluid inlet is evenly provided with a number of first liquid inlet holes connected to the upper interface of the hollow heat conducting sheet, and the first outflow area is connected to the first fluid outlet and is evenly provided with a number of first outlets connected to the remaining interfaces of the hollow heat conducting sheet. Liquid hole;
所述下集液板的第二底板上设有将内部分割为若干第二流入区域和若干第二流出区域的第二间隔-导流结构，所述的第二流入区域连通第二流体入口且均匀设置有若干连接部分所述空心导热片下接口的第二进液孔，所述第二流出区域连通所述第二流体出口且均匀设置有若干连接其余所述空心导热片下接口的第二出液孔。The second bottom plate of the lower liquid collecting plate is provided with a second space-guiding structure that divides the interior into several second inflow areas and several second outflow areas, and the second inflow area communicates with the second fluid inlet and A number of second liquid inlet holes connected to the lower interface of the hollow heat conduction sheet are evenly provided, and the second outflow area is connected to the second fluid outlet and a number of second fluid holes connected to the lower interface of the remaining hollow heat conduction sheet are evenly provided. Liquid outlet.
优选地，所述第一进液孔、第一出液孔通过软胶塞分别与空心导热片的上接口相连接；所述第二进液孔、第二出液孔通过软胶塞分别与空心导热片的下接口相连接。Preferably, the first liquid inlet hole and the first liquid outlet hole are respectively connected to the upper interface of the hollow heat conducting sheet through soft rubber plugs; the second liquid inlet hole and the second liquid outlet hole are respectively connected to The lower interfaces of the hollow heat conducting fins are connected.
优选地，上下两个电池支架的背面固定设置有镍片，所述镍片的一端与电池组相连接，另一端与电池控制单元相连接。Preferably, nickel sheets are fixedly arranged on the backs of the upper and lower battery holders, one end of the nickel sheet is connected to the battery pack, and the other end is connected to the battery control unit.
优选地，所述的第一间隔-导流结构和第二间隔-导流结构呈S形迂回布置。Preferably, the first spacer-flow guide structure and the second spacer-flow guide structure are arranged in an S-shaped circuitous manner.
优选地，所述的第一流入区域和第一流出区域沿上集液板长度方向间隔分布，第一进液孔呈列式均匀设置在各第一流入区域内，所述第一出液孔呈列式均匀设置在各第一流出区域内；Preferably, the first inflow area and the first outflow area are distributed at intervals along the length direction of the upper liquid collecting plate, the first liquid inlet holes are evenly arranged in rows in each first inflow area, and the first liquid outlet holes Arranged uniformly in each first outflow area in a row;
所述的第二流入区域和第二流出区域沿下集液板长度方向间隔分布，第二进液孔呈列式均匀设置在各第二流入区域内，所述第二出液孔呈列式均匀设置在各第二流出区域内。The second inflow area and the second outflow area are distributed at intervals along the length direction of the lower liquid collecting plate, the second liquid inlet holes are evenly arranged in each second inflow area in a row, and the second liquid outlet holes are in a row uniformly arranged in each second outflow area.
本方案在与电池组配合的多个空心导热片中，每列空心导热片内液冷通道冷却流体的流向相同，相邻两列之间空心导热片内液冷通道冷却流体的流向相反。In this solution, among the plurality of hollow heat conduction fins matched with the battery pack, the flow direction of the cooling fluid in the liquid cooling channels in each row of hollow heat conduction fins is the same, and the flow direction of the cooling fluid in the liquid cooling channels in the hollow heat conduction fins between two adjacent rows is opposite.
优选地，所述的电池支架、上集液板和所述下集液板上贯穿设置有若干通孔，螺栓穿过通孔与螺帽组合将电池支架、上集液板、下集液板、电池组和电池控制单元、空心导热片连为一体。Preferably, the battery bracket, the upper liquid collection plate and the lower liquid collection plate are provided with a plurality of through holes, and the bolts pass through the through holes and the nuts are combined to connect the battery support, the upper liquid collection plate, and the lower liquid collection plate. , the battery pack, the battery control unit, and the hollow heat conducting sheet are connected as one.
与现有的技术方案相比，本实用新型带来的有益效果有：Compared with the existing technical solutions, the beneficial effects brought by the utility model are as follows:
1、该液冷方案所设计的导热片均匀地分布在电池组每个电池的间隙中，在电池组内部，每个电池周围有若干导热片与其面接触，使得每个电池的散热较为有效且均匀，达到较佳的热管理性能；1. The heat conduction sheet designed by this liquid cooling scheme is evenly distributed in the gap of each battery in the battery pack. Inside the battery pack, there are several heat conduction sheets around each battery in contact with its surface, so that the heat dissipation of each battery is more effective and Uniform, to achieve better thermal management performance;
2、该液冷方案中，冷却工质并行流动，具有压降小的特点，减少了热管理系统所需的泵功耗；此外，采用双向流设计，即在每排导热片之间，冷却通道内冷却流体的流向相反，这进一步降低了电池组的最高温度、减小了最大温差；2. In this liquid cooling scheme, the cooling working medium flows in parallel, which has the characteristics of small pressure drop, which reduces the power consumption of the pump required by the thermal management system; in addition, a two-way flow design is adopted, that is, between each row of heat conducting fins, cooling The flow direction of the cooling fluid in the channel is reversed, which further reduces the maximum temperature of the battery pack and reduces the maximum temperature difference;
3、该液冷方案采用的导热片设计能使得电池组的排列更为紧凑，导热片较为轻薄，这有利于减轻液冷系统的重量，同时，采用良好机械性能和耐热的工程塑料代替传统金属集液板或液冷板，这有利于进一步减轻液冷系统的重量，提高动力电池包的比能量，从而增加电动汽车的续航里程。3. The design of the heat conduction sheet used in this liquid cooling solution can make the arrangement of the battery pack more compact, and the heat conduction sheet is lighter and thinner, which is conducive to reducing the weight of the liquid cooling system. At the same time, it uses good mechanical properties and heat-resistant engineering plastics instead of traditional Metal liquid collecting plate or liquid cooling plate, which is beneficial to further reduce the weight of the liquid cooling system and increase the specific energy of the power battery pack, thereby increasing the cruising range of electric vehicles.
附图说明Description of drawings
图1是本实用新型实施例的一种轻量化的电动汽车锂离子动力电池热管理液冷系统整体结构示意图。Fig. 1 is a schematic diagram of the overall structure of a lightweight electric vehicle lithium-ion power battery thermal management liquid cooling system according to an embodiment of the utility model.
图2是本实用新型实施例的一种轻量化的电动汽车锂离子动力电池热管理液冷系统分解示意图。Fig. 2 is an exploded schematic diagram of a light-weight electric vehicle lithium-ion power battery heat management liquid cooling system according to an embodiment of the present invention.
图3是本实用新型实施例的一种轻量化的电动汽车锂离子动力电池热管理液冷系统导热片结构示意图。Fig. 3 is a structural schematic diagram of a heat conduction sheet of a light-weight electric vehicle lithium-ion power battery heat management liquid cooling system according to an embodiment of the present invention.
图4是本实用新型实施例的一种轻量化的电动汽车锂离子动力电池热管理液冷系统电池组与导热片配合关系示意图。Fig. 4 is a schematic diagram of the cooperation relationship between the battery pack and the heat conducting sheet of a lightweight electric vehicle lithium-ion power battery heat management liquid cooling system according to an embodiment of the present invention.
图5是本实用新型实施例的一种轻量化的电动汽车锂离子动力电池热管理液冷系统上集液板结构分解示意图。Fig. 5 is an exploded schematic diagram of the structure of a liquid collecting plate on a heat management liquid cooling system for a lightweight lithium-ion power battery of an electric vehicle according to an embodiment of the utility model.
图6是本实用新型实施例的一种轻量化的电动汽车锂离子动力电池热管理液冷系统下集液板结构分解示意图(翻转180度)。Fig. 6 is an exploded schematic diagram of the structure of the liquid collecting plate under the thermal management liquid cooling system of a lightweight lithium-ion power battery of an electric vehicle according to an embodiment of the present invention (turned over 180 degrees).
图中所示：1-螺帽；2-上集液板；201-第一盖板；202-第一底板；203-第一间隔-导流结构；204-第一流出区域；205-第一流入区域；206-第一进液孔；207-第一出液孔；208-第一流体入口；209-第一流体出口；3-软胶塞；4-镍片；5-电池支架；6-空心导热片；601-液冷通道；602-上接口；603-弧面；604-下接口；7-电池组；8-下集液板；801-第二盖板；802-第二底板；803-第二间隔-导流结构；804-第二流出区域；805-第二流入区域；806-第二进液孔；807-第二出液孔；808-第二流体入口；809-第二流体出口；9-螺栓；10-电池控制单元；11-通孔。As shown in the figure: 1-nut; 2-upper liquid collecting plate; 201-the first cover plate; 202-the first bottom plate; 203-the first interval-guiding structure; 204-the first outflow area; 1. Inflow area; 206-first liquid inlet hole; 207-first liquid outlet hole; 208-first fluid inlet; 209-first fluid outlet; 3-soft rubber plug; 4-nickel sheet; 5-battery support; 6-hollow heat conducting sheet; 601-liquid cooling channel; 602-upper interface; 603-curved surface; 604-lower interface; 7-battery pack; 8-lower liquid collecting plate; 801-second cover plate; 802-second Bottom plate; 803-second interval-flow guide structure; 804-second outflow area; 805-second inflow area; 806-second liquid inlet hole; 807-second liquid outlet hole; 808-second fluid inlet; 809 - second fluid outlet; 9 - bolt; 10 - battery control unit; 11 - through hole.
具体实施方式Detailed ways
为使本实用新型的目的、技术方案更加清楚明白，下面结合本实用新型的附图对本实用新型所采用的技术方案进行描述：In order to make the purpose of the utility model and the technical solution clearer, the technical solution adopted in the utility model is described below in conjunction with the accompanying drawings of the utility model:
如图1和图2所示，一种轻量化的电动汽车锂离子动力电池热管理液冷系统，包括上、下设置的电池支架5、固定在所述电池支架5之间的电池组7和电池控制单元10，所述电池组7包括72个行列分布的18650圆柱形电池，所述电池支架5的上端和下端分别固定设置有上集液板2和下集液板8，相邻的所述圆柱形电池之间设置有与圆柱形电池面接触的空心导热片6，所述空心导热片6的上接口602和下接口604分别与上集液板2和下集液板8相连通，所述的电池支架5、上集液板2和所述下集液板8上贯穿设置有若干通孔11，螺栓9穿过通孔11与螺帽1组合将电池支架5、上集液板2、下集液板8、电池组7和电池控制单元10、空心导热片6连为一体，冷却流体为50%水/50%乙二醇混合液。As shown in Figures 1 and 2, a lightweight electric vehicle lithium-ion power battery heat management liquid cooling system includes battery brackets 5 arranged up and down, battery packs 7 fixed between the battery brackets 5 and The battery control unit 10, the battery pack 7 includes 72 18650 cylindrical batteries distributed in rows and columns, the upper and lower ends of the battery support 5 are respectively fixed with an upper liquid collecting plate 2 and a lower liquid collecting plate 8, and all adjacent A hollow heat conducting sheet 6 which is in contact with the surface of the cylindrical battery is arranged between the cylindrical batteries, and the upper interface 602 and the lower interface 604 of the hollow heat conducting sheet 6 communicate with the upper liquid collecting plate 2 and the lower liquid collecting plate 8 respectively, The battery bracket 5, the upper liquid collecting plate 2 and the lower liquid collecting plate 8 are provided with a plurality of through holes 11, and the bolts 9 pass through the through holes 11 and are combined with the nut 1 to connect the battery bracket 5 and the upper liquid collecting plate. 2. The lower liquid collecting plate 8, the battery pack 7, the battery control unit 10, and the hollow heat conducting sheet 6 are connected as a whole, and the cooling fluid is a 50% water/50% ethylene glycol mixture.
如图3所示，所述的空心导热片6材质为6063铝，其中心设置有液冷通道601，两端分别设置有上接口602和下接口604，中部均匀设置有三个与所述圆柱形电池的圆周壁相贴合的弧面603，弧面603的曲率半径为9mm，弧面603高度为50mm~65mm,空心导热片6内的冷却通道的直径为3mm。As shown in Figure 3, the material of the hollow heat conduction plate 6 is 6063 aluminum, a liquid cooling channel 601 is arranged in the center, an upper interface 602 and a lower interface 604 are respectively arranged at both ends, and three evenly connected with the cylindrical The arc surface 603 attached to the peripheral wall of the battery has a radius of curvature of 9 mm, a height of the arc surface 603 of 50 mm to 65 mm, and a diameter of the cooling channel in the hollow heat conducting sheet 6 of 3 mm.
图4表示了空心导热片6与电池组7的配合关系，在电池组7内部，每个空心导热片6与三个电池相配合形成面接触，达到高效、均匀散热的效果。FIG. 4 shows the cooperation relationship between the hollow heat conducting sheet 6 and the battery pack 7. Inside the battery pack 7, each hollow heat conducting sheet 6 cooperates with three batteries to form a surface contact to achieve efficient and uniform heat dissipation.
所述上集液板2和下集液板8所用材料为PC/ABS材料，PC/ABS材料具有机械性能好、耐热、阻燃等特点。The material used for the upper liquid collecting plate 2 and the lower liquid collecting plate 8 is PC/ABS material, which has the characteristics of good mechanical properties, heat resistance, and flame retardancy.
如图5所示，所述的上集液板2为第一盖板201和第一底板202相互紧密扣合而成的一体式结构，其内部供冷却流体流动，同时所述的上集液板2还设置有第一流体入口208和第一流体出口209；另外，所述上集液板2的第一底板202上设有将内部分割为若干第一流入区域205和若干第一流出区域204的第一间隔-导流结构203，所述的第一间隔-导流结构203呈S形迂回布置。所述的第一流入区域205和第一流出区域204沿上集液板2长度方向间隔分布，第一进液孔206呈列式均匀设置在各第一流入区域205内，所述第一出液孔207呈列式均匀设置在各第一流出区域204内；所述的第一流入区域205连通第一流体入口208且均匀设置有若干通过软胶塞3连接部分所述空心导热片6上接口602的第一进液孔206，所述第一流出区域204连通第一流体出口209且均匀设置有若干通过软胶塞3连接其余所述空心导热片6上接口602的第一出液孔207。As shown in Figure 5, the upper liquid collecting plate 2 is an integrated structure formed by the first cover plate 201 and the first bottom plate 202 being tightly fastened to each other. The plate 2 is also provided with a first fluid inlet 208 and a first fluid outlet 209; in addition, the first bottom plate 202 of the upper liquid collecting plate 2 is provided with a plurality of first inflow regions 205 and a plurality of first outflow regions. 204 of the first spacer-flow guide structure 203, the first spacer-flow guide structure 203 is arranged in an S-shaped circuitous manner. The first inflow area 205 and the first outflow area 204 are distributed at intervals along the length direction of the upper liquid collecting plate 2, and the first liquid inlet holes 206 are uniformly arranged in each first inflow area 205 in a row. The liquid holes 207 are evenly arranged in each first outflow area 204; the first inflow area 205 is connected to the first fluid inlet 208 and evenly arranged on the hollow heat conducting sheet 6 connected by the soft rubber plug 3 The first liquid inlet hole 206 of the interface 602, the first outflow area 204 communicates with the first fluid outlet 209 and is evenly provided with a number of first liquid outlet holes connected to the other interface 602 on the hollow heat conducting sheet 6 through the soft rubber plug 3 207.
如图6所示，所述的下集液板8为第二盖板801和第二底板802相互紧密扣合而成的一体式结构，其内部供冷却流体流动，同时所述的下集液板8还设置有第二流体入口808和第二流体出口809。另外，所述下集液板8的第二底板802上设有将内部分割为若干第二流入区域805和第二流出区域804的第二间隔-导流结构803，所述的第二间隔-导流结构803呈S形迂回布置。所述的第二流入区域805和第二流出区域804沿下集液板8长度方向间隔分布，第二进液孔806呈列式均匀设置在各第二流入区域805内，所述第二出液孔807呈列式均匀设置在各第二流出区域804内。所述的第二流入区域805连通第二流体入口808且均匀设置有若干通过软胶塞3连接部分所述空心导热片6下接口604的第二进液孔806，所述第二流出区域804连通所述第二流体出口809且均匀设置有若干通过软胶塞3连接其余所述空心导热片6下接口604的第二出液孔807。As shown in Figure 6, the lower liquid collecting plate 8 is an integrated structure formed by the second cover plate 801 and the second bottom plate 802 being tightly fastened to each other. The plate 8 is also provided with a second fluid inlet 808 and a second fluid outlet 809 . In addition, the second bottom plate 802 of the lower liquid collecting plate 8 is provided with a second interval-flow guide structure 803 that divides the interior into several second inflow areas 805 and second outflow areas 804, the second interval- The flow guiding structure 803 is arranged in an S-shaped meander. The second inflow area 805 and the second outflow area 804 are distributed at intervals along the length direction of the lower liquid collecting plate 8, and the second liquid inlet holes 806 are evenly arranged in rows in each second inflow area 805, and the second outflow area The liquid holes 807 are uniformly arranged in each second outflow region 804 in a row. The second inflow region 805 communicates with the second fluid inlet 808 and is uniformly provided with a number of second liquid inlet holes 806 connected to the lower interface 604 of the hollow heat conducting sheet 6 through the soft rubber plug 3 , and the second outflow region 804 Connected to the second fluid outlet 809 and evenly provided with a number of second liquid outlet holes 807 connected to the other lower interfaces 604 of the hollow heat conducting sheet 6 through the soft rubber plug 3 .
上述实施例的第一间隔-导流结构203和第二间隔-导流结803具有将冷却流体分流或汇流的作用。在与电池组7配合的多个空心导热片6中，每列空心导热片6内液冷通道601冷却流体的流向相同，相邻两列之间空心导热片6内液冷通道601冷却流体的流向相反。The first spacer-flow guide structure 203 and the second spacer-flow guide junction 803 in the above embodiment have the function of dividing or converging the cooling fluid. Among the multiple hollow heat conducting fins 6 matched with the battery pack 7, the flow direction of the cooling fluid in the liquid cooling channels 601 in each row of hollow heat conducting fins 6 is the same, and the flow direction of the cooling fluid in the liquid cooling channels 601 in the hollow heat conducting fins 6 between two adjacent rows flow in the opposite direction.
上下两个电池支架5的背面分别固定设置有镍片4，所述镍片4的一端与电池组7相连接，另一端与电池控制单元10相连接。Nickel sheets 4 are respectively fixed on the backs of the upper and lower battery holders 5 , one end of the nickel sheets 4 is connected to the battery pack 7 , and the other end is connected to the battery control unit 10 .
上述实施例的工作原理为：The working principle of the above-mentioned embodiment is:
电池组7与空心导热片6形成面接触，电池组7在充电或放电过程中，产生的热量以热传导的方式传递至空心导热片6。The battery pack 7 is in surface contact with the hollow heat conducting sheet 6 , and the heat generated by the battery pack 7 is transferred to the hollow heat conducting sheet 6 in the form of heat conduction during charging or discharging.
同时，一部分冷却流体从第一流体入口208进入上集液板2，在第一间隔-导流结构203的作用下，流入第一流入区域205，并分流成多股流体，均匀地分配到每个第一出液孔206中；随后，冷却流体并行流入多个空心导热片6的液冷通道601，冷却流体与空心导热片6发生对流换热，以带走空心导热片6的热量，降低电池组7的温度；随后，冷却流体由第二进液孔807流入下集液板8，在第二间隔-导流结构803的引导下，流入第二流出区域804，并汇流为一股流体，在第二流体出口809流出，流出的冷却流体由泵输送至外部换热器后得到冷却，随后重新流入上集液板2的第一流体入口208，以此构成一个液冷循环；另一部分冷却流体从第二流体入口808进入下集液板8，在第二间隔-导流结构803的作用下，流入第二流入区域805，并分流成多股流体，均匀地分配到每个第二出液孔806中；随后，冷却流体并行流入每个空心导热片6的液冷通道601，冷却流体与空心导热片6发生对流换热，以带走空心导热片6的热量，降低电池组7的温度；随后，冷却流体由第一进液孔207流入上集液板2，在第一间隔-导流结构203的引导下，流入第一流出区域204，并汇流为一股流体，在第一流体出口209流出。流出的冷却流体由泵输送至外部换热器后得到冷却，随后重新流入下集液板8的第二流体入口808，以此构成另一个液冷循环。At the same time, a part of the cooling fluid enters the upper liquid collecting plate 2 from the first fluid inlet 208, flows into the first inflow area 205 under the action of the first spacer-guiding structure 203, and splits into multiple streams, which are evenly distributed to each In a first liquid outlet hole 206; then, the cooling fluid flows into the liquid cooling channel 601 of a plurality of hollow heat conducting fins 6 in parallel, and the cooling fluid and the hollow heat conducting fins 6 undergo convective heat exchange to take away the heat of the hollow heat conducting fins 6 and reduce The temperature of the battery pack 7; subsequently, the cooling fluid flows into the lower liquid collecting plate 8 from the second liquid inlet hole 807, and under the guidance of the second spacer-flow guiding structure 803, flows into the second outflow area 804, and then flows into a stream of fluid , flows out at the second fluid outlet 809, and the outflowing cooling fluid is pumped to the external heat exchanger to be cooled, and then re-flows into the first fluid inlet 208 of the upper liquid collecting plate 2, thereby forming a liquid cooling cycle; the other part The cooling fluid enters the lower liquid collecting plate 8 from the second fluid inlet 808, flows into the second inflow region 805 under the action of the second spacer-flow guiding structure 803, and is divided into multiple streams, which are evenly distributed to each second In the liquid outlet hole 806; then, the cooling fluid flows into the liquid cooling channel 601 of each hollow heat conducting sheet 6 in parallel, and the cooling fluid and the hollow heat conducting sheet 6 undergo convective heat exchange to take away the heat of the hollow heat conducting sheet 6 and reduce the battery pack 7 temperature; subsequently, the cooling fluid flows into the upper liquid collecting plate 2 from the first liquid inlet hole 207, and under the guidance of the first spacer-flow guide structure 203, flows into the first outflow region 204, and confluences into a stream of fluid, at the A fluid outlet 209 flows out. The outgoing cooling fluid is pumped to the external heat exchanger to be cooled, and then flows into the second fluid inlet 808 of the lower liquid collecting plate 8 again, thus forming another liquid cooling cycle.
以上两个循环使得冷却流体并行流过电池间隙的空心导热片6中，具有冷却性能好、压降小的特点，同时每排空心导热片6之间，液冷通道601内冷却流体的流向相反，这可以进一步降低电池组7的最高温度、降低电池组7的温差。The above two cycles make the cooling fluid flow through the hollow heat conducting fins 6 in the battery gap in parallel, which has the characteristics of good cooling performance and small pressure drop. At the same time, between each row of hollow heat conducting fins 6, the flow direction of the cooling fluid in the liquid cooling channel 601 On the contrary, this can further reduce the maximum temperature of the battery pack 7 and reduce the temperature difference of the battery pack 7 .
需要强调的是，上述的实施方式并不用以限制本实用新型的保护范围，凡是在本实用新型的精神和原则之内，所做的改进、等同替换等，均应包含在本实用新型的保护范围之内。It should be emphasized that the above-mentioned implementation methods are not intended to limit the scope of protection of the present utility model. All improvements, equivalent replacements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model. within range.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820217138.0UCN208014766U (en) | 2018-02-07 | 2018-02-07 | A kind of light-weighted electric vehicle lithium-ion-power cell heat management liquid cooling system |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820217138.0UCN208014766U (en) | 2018-02-07 | 2018-02-07 | A kind of light-weighted electric vehicle lithium-ion-power cell heat management liquid cooling system |
| Publication Number | Publication Date |
|---|---|
| CN208014766Utrue CN208014766U (en) | 2018-10-26 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820217138.0UExpired - Fee RelatedCN208014766U (en) | 2018-02-07 | 2018-02-07 | A kind of light-weighted electric vehicle lithium-ion-power cell heat management liquid cooling system |
| Country | Link |
|---|---|
| CN (1) | CN208014766U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206256A (en)* | 2018-02-07 | 2018-06-26 | 华南理工大学 | A kind of light-weighted electric vehicle lithium-ion-power cell heat management liquid cooling system |
| 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 |
| CN113273016A (en)* | 2019-01-07 | 2021-08-17 | 卡诺科技公司 | Method and system for battery pack thermal management |
| CN115241575A (en)* | 2022-09-23 | 2022-10-25 | 中国第一汽车股份有限公司 | Battery cell assembly and vehicle with same |
| WO2024113795A1 (en)* | 2022-12-03 | 2024-06-06 | 浙大城市学院 | Lightweight new energy battery cooling device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206256A (en)* | 2018-02-07 | 2018-06-26 | 华南理工大学 | A kind of light-weighted electric vehicle lithium-ion-power cell heat management liquid cooling system |
| CN108206256B (en)* | 2018-02-07 | 2024-09-27 | 华南理工大学 | Lightweight lithium ion power battery thermal management liquid cooling system for electric automobile |
| CN113273016A (en)* | 2019-01-07 | 2021-08-17 | 卡诺科技公司 | Method and system for battery pack thermal management |
| CN113273016B (en)* | 2019-01-07 | 2024-08-23 | 卡诺科技公司 | Method and system for thermal management of battery packs |
| 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 |
| CN115241575A (en)* | 2022-09-23 | 2022-10-25 | 中国第一汽车股份有限公司 | Battery cell assembly and vehicle with same |
| WO2024113795A1 (en)* | 2022-12-03 | 2024-06-06 | 浙大城市学院 | Lightweight new energy battery cooling device |
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| CN108206256B (en) | Lightweight lithium ion power battery thermal management liquid cooling system for electric automobile | |
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| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20181026 |