CN110416657A - A gas-liquid coupling cooling device for a secondary lithium-ion battery of an electric forklift - Google Patents
A gas-liquid coupling cooling device for a secondary lithium-ion battery of an electric forklift Download PDFInfo
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- CN110416657A CN110416657A CN201910527198.1A CN201910527198A CN110416657A CN 110416657 A CN110416657 A CN 110416657A CN 201910527198 A CN201910527198 A CN 201910527198A CN 110416657 A CN110416657 A CN 110416657A
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- 238000001816 cooling Methods 0.000 title claims abstract description 86
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 title claims abstract description 13
- 238000010168 coupling process Methods 0.000 title claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 13
- 230000017525 heat dissipation Effects 0.000 claims abstract description 61
- 239000002826 coolant Substances 0.000 claims description 17
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000000110 cooling liquid Substances 0.000 description 21
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
-
- 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
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
-
- 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
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
本发明公开了一种电动叉车二次锂离子电池气液耦合冷却装置，包括散热套筒与电池放置箱，散热套筒位于电池放置箱内部，散热套筒内部用于放置电池；散热套筒外壁设有螺旋形散热肋片，散热套筒外侧设有冷却管，冷却管横截面为半圆形，冷却管螺旋形地绕在散热套筒外壁，冷却管的竖直面与散热套筒相互贴合；电池放置箱包括箱体、顶板与底板，顶板、底板分别与箱体连接。本发明的装置结构简洁，空间利用率高，能够实现对电动叉车二次锂离子电池的快速散热和冷却，确保了二次锂离子电池的安全性，提高了锂离子电池的循环性能，降低了维护成本。
The invention discloses a gas-liquid coupling cooling device for a secondary lithium-ion battery of an electric forklift, which comprises a heat dissipation sleeve and a battery storage box. The heat dissipation sleeve is located inside the battery storage box, and the inside of the heat dissipation sleeve is used for placing batteries; Spiral cooling ribs are provided, and cooling pipes are arranged on the outside of the cooling sleeve. The cross section of the cooling pipe is semicircular. The battery storage box includes a box body, a top plate and a bottom plate, and the top plate and the bottom plate are respectively connected with the box body. The device of the present invention has simple structure and high space utilization rate, can realize rapid heat dissipation and cooling of the secondary lithium-ion battery of an electric forklift, ensures the safety of the secondary lithium-ion battery, improves the cycle performance of the lithium-ion battery, and reduces the maintenance costs.
Description
技术领域technical field
本发明具体涉及一种电动叉车二次锂离子电池气液耦合冷却装置。The invention specifically relates to a gas-liquid coupling cooling device for a secondary lithium ion battery of an electric forklift.
背景技术Background technique
二次锂离子电池，是由两种开放结构材料作为两极材料的电池，锂离子在充放电过程中从一极嵌入化合物移动到另一极。二次锂离子电池与其他类型电池相比具有能量密度高、工作电压高、循环寿命长等优点，已经被广泛应用于工业领域。由于在充放电过程中正极和电解液相互作用产生大量的热，从而导致电池温度急剧上升，导致电池工作性能下降、循环寿命缩短，甚至引发电池起火和爆炸。The secondary lithium-ion battery is a battery with two open-structure materials as the two-pole material. Lithium ions move from one pole to the other pole during charging and discharging. Compared with other types of batteries, secondary lithium-ion batteries have the advantages of high energy density, high working voltage, and long cycle life, and have been widely used in industrial fields. Due to the interaction between the positive electrode and the electrolyte during charging and discharging, a large amount of heat is generated, which leads to a sharp rise in battery temperature, resulting in a decrease in battery performance, shortened cycle life, and even fire and explosion of the battery.
电动叉车上的二次锂离子电池在工作过程中会产生大量热量，一旦电池温度超出最佳工作温度范围，将会影响电池的工作性能、缩短循环寿命；目前电动叉车的电池主要通过电池箱外壁进行散热，该方法冷却效率低，效果差。The secondary lithium-ion battery on the electric forklift will generate a lot of heat during the working process. Once the battery temperature exceeds the optimum working temperature range, it will affect the working performance of the battery and shorten the cycle life; at present, the battery of the electric forklift mainly passes through the outer wall of the battery box. To dissipate heat, this method has low cooling efficiency and poor effect.
发明内容Contents of the invention
针对上述情况，为克服现有技术的缺陷，本发明提供一种电动叉车二次锂离子电池气液耦合冷却装置。In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a gas-liquid coupling cooling device for a secondary lithium-ion battery of an electric forklift.
为了实现上述目的，本发明提供以下技术方案：In order to achieve the above object, the present invention provides the following technical solutions:
一种电动叉车二次锂离子电池气液耦合冷却装置，包括散热套筒与电池放置箱，散热套筒位于电池放置箱内部，散热套筒内部用于放置电池；A gas-liquid coupling cooling device for a secondary lithium-ion battery of an electric forklift, comprising a heat dissipation sleeve and a battery storage box, the heat dissipation sleeve is located inside the battery storage box, and the inside of the heat dissipation sleeve is used to place the battery;
散热套筒外壁设有螺旋形散热肋片，散热套筒外侧设有冷却管，冷却管横截面为半圆形，冷却管螺旋形地绕在散热套筒外壁，冷却管的竖直面与散热套筒相互贴合；The outer wall of the heat dissipation sleeve is provided with spiral heat dissipation ribs, and the outer side of the heat dissipation sleeve is provided with a cooling pipe. The cross section of the cooling pipe is semicircular. The sleeves fit together;
电池放置箱包括箱体、顶板与底板，顶板、底板分别与箱体连接；散热套筒固定连接在底板上。The battery storage box includes a box body, a top plate and a bottom plate, and the top plate and the bottom plate are respectively connected to the box body; the heat dissipation sleeve is fixedly connected to the bottom plate.
进一步地，冷却管位于螺旋形肋片之间的空隙中。Further, the cooling pipe is located in the gap between the spiral fins.
进一步地，顶板内设有第一冷却液流道，第一冷却液流道为冷却液出口流道，第一冷却液流道包括第一出口与第一入口，第一入口与冷却管出口相连。Further, the top plate is provided with a first cooling liquid flow channel, the first cooling liquid flow channel is a cooling liquid outlet flow channel, the first cooling liquid flow channel includes a first outlet and a first inlet, and the first inlet is connected to the outlet of the cooling pipe .
进一步地，底板内设有第二冷却液流道，第二冷却液流道为冷却液入口流道，第二冷却液流道包括第二出口与第二入口，第二出口与冷却管入口相连。Further, a second coolant channel is provided in the bottom plate, the second coolant channel is a coolant inlet channel, the second coolant channel includes a second outlet and a second inlet, and the second outlet is connected to the inlet of the cooling pipe .
进一步地，箱体左右两侧分别设有多个分级散热通道。Further, a plurality of graded cooling channels are respectively provided on the left and right sides of the box body.
进一步地，在分级散热通道的外出口处设置有挡板，挡板与箱体连接。Further, a baffle is provided at the outlet of the graded heat dissipation channel, and the baffle is connected with the box body.
进一步地，箱体后侧中上部设有固定支架，固定支架上连接有散热风扇。Further, a fixing bracket is provided at the middle and upper part of the rear side of the box body, and a cooling fan is connected to the fixing bracket.
本发明的有益效果是：The beneficial effects of the present invention are:
(1)本发明在散热套筒外壁设有螺旋形散热肋片，螺旋形散热肋片的设置增大了散热面积，提高了电池散热效率。(1) In the present invention, spiral heat dissipation fins are provided on the outer wall of the heat dissipation sleeve. The arrangement of the spiral heat dissipation fins increases the heat dissipation area and improves the heat dissipation efficiency of the battery.
(2)本发明在散热套筒外侧设有冷却管，其中，冷却管横截面为半圆形，冷却管螺旋形地绕在散热套筒外壁，冷却管的竖直面与散热套筒相互贴合；这样能够增大冷却管与散热套筒的接触面积，从而快速带走二次锂离子电池散发的热量，提高了冷却效率。(2) The present invention is provided with cooling pipe on the outside of the heat dissipation sleeve, wherein the cross section of the cooling pipe is semicircular, the cooling pipe is spirally wound around the outer wall of the heat dissipation sleeve, and the vertical surface of the cooling pipe is attached to the heat dissipation sleeve In this way, the contact area between the cooling pipe and the heat dissipation sleeve can be increased, thereby quickly taking away the heat emitted by the secondary lithium-ion battery, and improving the cooling efficiency.
(3)本发明采用的内置式冷却液流道，避免了布置管路引起的结构复杂性，减小了电池放置箱的体积，有利于冷却液散热。(3) The built-in coolant flow channel adopted by the present invention avoids the structural complexity caused by the arrangement of pipelines, reduces the volume of the battery storage box, and facilitates heat dissipation of the coolant.
(4)本发明采用分级式散热通道，使电池放置箱内温度分布均匀。(4) The present invention adopts hierarchical heat dissipation channels to make the temperature distribution in the battery storage box even.
(5)本发明的装置结构简洁，空间利用率高，能够实现对电动叉车二次锂离子电池的快速散热和冷却，确保了二次锂离子电池的安全性，提高了锂离子电池的循环性能，降低了维护成本。(5) The device of the present invention has a simple structure and high space utilization rate, can realize rapid heat dissipation and cooling of the secondary lithium ion battery of an electric forklift, ensures the safety of the secondary lithium ion battery, and improves the cycle performance of the lithium ion battery , reducing maintenance costs.
附图说明Description of drawings
图1为单个二次锂离子电池、散热套筒、散热肋板以及冷却管组合在一起的整体结构示意图。FIG. 1 is a schematic diagram of the overall structure of a single secondary lithium-ion battery, a heat dissipation sleeve, a heat dissipation rib and a cooling pipe.
图2为散热套筒和散热肋板的半剖示意图。Fig. 2 is a half-sectional schematic diagram of a heat dissipation sleeve and a heat dissipation rib.
图3为图1的纵向剖视图(图中，隐去了二次锂离子电池)。Fig. 3 is a longitudinal sectional view of Fig. 1 (in the figure, the secondary lithium ion battery is hidden).
图4为除去电池放置箱顶板后的立体图。Fig. 4 is a perspective view after removing the top plate of the battery storage box.
图5为电池放置箱顶板第一冷却液流道的剖视图。Fig. 5 is a cross-sectional view of the first coolant channel on the top plate of the battery storage box.
图6为电池放置箱底板第二冷却液流道的剖视图。Fig. 6 is a cross-sectional view of the second coolant channel on the bottom plate of the battery storage box.
具体实施方式Detailed ways
以下结合附图对本发明的技术方案做进一步详细说明，应当指出的是，具体实施方式只是对本发明的详细说明，不应视为对本发明的限定。The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings. It should be noted that the specific implementation is only a detailed description of the present invention and should not be regarded as a limitation of the present invention.
本发明提供了一种电动叉车二次锂离子电池气液耦合冷却装置，如图4所示，包括散热套筒2与电池放置箱，散热套筒2位于电池放置箱内部，散热套筒与电池放置箱固定连接，散热套筒的筒内用于放置电池，本实施例中，二次锂离子电池1位于散热套筒2内部。在一些优选的方式中，散热套筒与电池放置箱通过焊接连接。The invention provides a gas-liquid coupling cooling device for a secondary lithium-ion battery of an electric forklift, as shown in FIG. The placement box is fixedly connected, and the inside of the heat dissipation sleeve is used to place the battery. In this embodiment, the secondary lithium ion battery 1 is located inside the heat dissipation sleeve 2 . In some preferred manners, the heat dissipation sleeve and the battery storage box are connected by welding.
在一些优选的方式中，如图1-2所示，散热套筒2为空心圆柱状，可以将二次锂离子电池1放入散热套筒2中，散热套筒的具体形状可以根据电池的形状进行设置成不同的形状；在一些优选的方式中，散热套筒2外壁上设有螺旋形散热肋片3，螺旋形散热肋片3的设置增大了散热面积，有助于电池放置箱内的空气流动。In some preferred modes, as shown in Figure 1-2, the heat dissipation sleeve 2 is a hollow cylinder, and the secondary lithium ion battery 1 can be placed in the heat dissipation sleeve 2, and the specific shape of the heat dissipation sleeve can be determined according to the shape of the battery. The shape is set into different shapes; in some preferred modes, the outer wall of the heat dissipation sleeve 2 is provided with spiral heat dissipation fins 3, and the setting of the spiral heat dissipation fins 3 increases the heat dissipation area, which helps the battery storage box air flow inside.
在一些优选的方式中，如图1、3所示，散热套筒2外侧设有冷却管4，在一些优选的方式中，冷却管横截面为半圆形，冷却管4包括一个内腔、一个弧形面和一个竖直面，其中，内腔用于存储冷却液，冷却管4的竖直面与散热套筒2相互贴合，这样能够增大冷却管4与散热套筒2的接触面积，从而快速带走二次锂离子电池1散发的热量；具体地来说，冷却管4的横截面呈D形，冷却管4的竖直面与散热套筒2相互贴合。In some preferred forms, as shown in Figures 1 and 3, a cooling pipe 4 is provided on the outside of the cooling sleeve 2. In some preferred forms, the cross section of the cooling pipe is semicircular, and the cooling pipe 4 includes an inner cavity, An arc-shaped surface and a vertical surface, wherein the inner cavity is used to store cooling liquid, and the vertical surface of the cooling pipe 4 is attached to the heat dissipation sleeve 2, so that the contact between the cooling pipe 4 and the heat dissipation sleeve 2 can be increased area, so as to quickly take away the heat emitted by the secondary lithium-ion battery 1; specifically, the cross-section of the cooling pipe 4 is D-shaped, and the vertical surface of the cooling pipe 4 and the heat dissipation sleeve 2 are attached to each other.
在一些优选的方式中，冷却管4螺旋形地绕在散热套筒2外壁，进一步地，由于散热肋片3是螺旋形的，散热肋片3螺旋形地固定在散热套筒的外壁，冷却管位于相邻螺旋形肋片之间的空隙中，螺旋形地绕在散热套筒2外壁，螺旋形散热肋片3能够支撑冷却管4，还能够使得冷却管4处于螺旋状态；如图3所示，图3给出了冷却管4螺旋形地绕在散热套筒2外壁的状态。In some preferred modes, the cooling pipe 4 is spirally wound on the outer wall of the heat dissipation sleeve 2, and further, since the heat dissipation fins 3 are spiral, the heat dissipation fins 3 are spirally fixed on the outer wall of the heat dissipation sleeve, cooling The tube is located in the gap between the adjacent spiral fins, spirally wound on the outer wall of the heat dissipation sleeve 2, the spiral heat dissipation fins 3 can support the cooling pipe 4, and can also make the cooling pipe 4 in a spiral state; as shown in Figure 3 As shown, FIG. 3 shows the state in which the cooling pipe 4 is spirally wound around the outer wall of the heat dissipation sleeve 2 .
在一些优选的方式中，冷却管4采用镁铝合金材质，镁铝合金材质成本低，质量轻，散热性能良好，有助于提高散热效率。In some preferred manners, the cooling pipe 4 is made of magnesium-aluminum alloy, which is low in cost, light in weight, and has good heat dissipation performance, which helps to improve heat dissipation efficiency.
在一些优选的方式中，如图4所示，电池放置箱包括箱体6、顶板9与底板12，在一些优选的方式中，顶板9与箱体6通过螺钉连接，底板12与箱体6也可以通过螺钉连接，在一些优选的方式中，顶板9与底板12均为金属板，采用金属板有利于散热，进一步地，采用铝合金材质，铝合金材料重量轻，强度高，散热性能好。In some preferred forms, as shown in Figure 4, the battery storage box includes a box body 6, a top plate 9 and a bottom plate 12, in some preferred ways, the top plate 9 and the box body 6 are connected by screws, and the bottom plate 12 is connected to the box body 6 It can also be connected by screws. In some preferred ways, both the top plate 9 and the bottom plate 12 are metal plates, and the use of metal plates is conducive to heat dissipation. Further, aluminum alloy is used, which is light in weight, high in strength, and good in heat dissipation. .
在一些优选的方式中，如图5所示，顶板9内设有第一冷却液流道10，第一冷却液流道10为冷却液出口流道，在一些优选的方式中，第一冷却液流道10包括第一出口11与第一入口21，第一入口21与冷却管出口相连，冷却管中的冷却液由第一入口21进入第一冷却液流道10，最后冷却液由第一出口11流出；在一些优选的方式中，第一出口11的数量为一个，第一入口21的数量为多个，第一入口21的数量与冷却管的数量一致，也与电池的数量一致，本实施例中，第一入口21为六个，第一出口11为一个，在一些优选的方式中，如图5所示，第一出口11与第一入口21的横截面均为圆形，但是，冷却管4的横截面为半圆形，因此，在冷却管4与圆形的第一入口21连接时，增加一个半圆形的片状物，堵住第一入口21的另一半圆形开口；在一些优选的方式中，第一入口21与冷却管4通过焊接连接，在焊接过程中，同时将一个半圆形的镁铝合金金属片焊接在第一入口21处，并且使镁铝合金金属片与半圆形冷却管连接，这样使得第一入口21与冷却管4连接地更加牢固，并且密封性较好。在另一些优选的方式中，第一出口11的横截面为圆形，第一入口21的横截面为半圆形，这样便于第一入口21与冷却管4连接。In some preferred modes, as shown in FIG. 5 , a first cooling liquid flow channel 10 is provided in the top plate 9, and the first cooling liquid flow channel 10 is a cooling liquid outlet flow channel. In some preferred modes, the first cooling liquid The liquid channel 10 includes a first outlet 11 and a first inlet 21, and the first inlet 21 is connected to the outlet of the cooling pipe. An outlet 11 flows out; in some preferred modes, the number of the first outlet 11 is one, and the number of the first inlet 21 is multiple, and the number of the first inlet 21 is consistent with the number of cooling pipes, and is also consistent with the number of batteries , in this embodiment, there are six first inlets 21, and one first outlet 11. In some preferred modes, as shown in FIG. 5, the cross sections of the first outlets 11 and the first inlet 21 are both circular However, the cross section of the cooling pipe 4 is semicircular, therefore, when the cooling pipe 4 is connected with the circular first inlet 21, a semicircular sheet is added to block the other half of the first inlet 21 Circular opening; In some preferred modes, the first inlet 21 is connected to the cooling pipe 4 by welding, and in the welding process, a semicircular magnesium-aluminum alloy metal sheet is welded at the first inlet 21 at the same time, and the The magnesium-aluminum alloy metal sheet is connected to the semicircular cooling pipe, so that the connection between the first inlet 21 and the cooling pipe 4 is more firm, and the sealing performance is better. In other preferred manners, the cross section of the first outlet 11 is circular, and the cross section of the first inlet 21 is semicircular, which facilitates the connection between the first inlet 21 and the cooling pipe 4 .
在一些优选的方式中，如图6所示，底板12内设有第二冷却液流道13，第二冷却液流道13为冷却液入口流道，在一些优选的方式中，第二冷却液流道13包括第二出口22与第二入口14，第二出口22与冷却管4入口相连，冷却液由第二入口14进入第二冷却液流道13，第二冷却液流道13中的冷却液由第二出口22流出，然后进入冷却管4；在一些优选的方式中，第二出口22的数量为多个，第二入口14的数量为一个，第二出口22的数量与冷却管的数量一致，也与电池的数量一致，本实施例中，第二出口22为六个，第二入口14为一个，在一些优选的方式中，如图6所示，第二出口22与第二入口14的横截面均为圆形，但是，冷却管4的横截面为半圆形，因此，在冷却管4与圆形的第二出口22连接时，增加一个半圆形的片状物，堵住第二出口22的另一半圆形开口；在一些优选的方式中，第二出口22与冷却管4通过焊接连接，在焊接过程中，同时将一个半圆形的镁铝合金金属片焊接在第二出口22处，并且使镁铝合金金属片与半圆形冷却管连接，这样使得第二出口22与冷却管4连接地更加牢固，并且密封性较好。在另一些优选的方式中，第二入口14的横截面为圆形，第二出口22的横截面为半圆形，这样便于第二出口22与冷却管4连接。本发明采用内置式的第一冷却液流道10和第二冷却液流道13，避免了布置管路引起的结构复杂性，减小了电池放置箱的体积。In some preferred modes, as shown in FIG. 6 , a second cooling liquid flow channel 13 is provided in the bottom plate 12, and the second cooling liquid flow channel 13 is a cooling liquid inlet flow channel. In some preferred modes, the second cooling liquid The liquid flow channel 13 includes a second outlet 22 and a second inlet 14, the second outlet 22 is connected to the inlet of the cooling pipe 4, the cooling liquid enters the second cooling liquid flow channel 13 from the second inlet 14, and the second cooling liquid flow channel 13 The cooling liquid flows out from the second outlet 22, and then enters the cooling pipe 4; in some preferred modes, the number of the second outlet 22 is multiple, the number of the second inlet 14 is one, and the number of the second outlet 22 is the same as that of the cooling tube. The number of tubes is consistent with the number of batteries. In this embodiment, there are six second outlets 22 and one second inlet 14. In some preferred modes, as shown in FIG. 6, the second outlet 22 is connected to The cross-sections of the second inlet 14 are all circular, but the cross-section of the cooling pipe 4 is semicircular, so when the cooling pipe 4 is connected with the circular second outlet 22, a semicircular sheet is added. object, to block the other semicircular opening of the second outlet 22; in some preferred ways, the second outlet 22 is connected to the cooling pipe 4 by welding, and during the welding process, a semicircular magnesium-aluminum alloy metal The sheet is welded at the second outlet 22, and the magnesium-aluminum alloy metal sheet is connected to the semicircular cooling pipe, so that the connection between the second outlet 22 and the cooling pipe 4 is more firm and the sealing is better. In some other preferred manners, the cross section of the second inlet 14 is circular, and the cross section of the second outlet 22 is semicircular, which facilitates the connection of the second outlet 22 and the cooling pipe 4 . The present invention adopts the built-in first cooling liquid flow channel 10 and the second cooling liquid flow channel 13, which avoids the structural complexity caused by arranging pipelines and reduces the volume of the battery storage box.
在一些优选的方式中，如图4所示，箱体6左右两侧分别设有多个分级散热通道5，在分级散热通道5的外出口处设置有挡板24，挡板24与箱体6连接，挡板24与箱体6的夹角大小决定了散热程度的大小；在一些优选的方式中，挡板24通过焊接的方式与箱体6连接，在另一些优选的方式中，挡板24与箱体6铰接连接，可以打开挡板24，使挡板24处于某一状态；挡板24开合的程度不同，挡板24与箱体6之间的夹角不同，散热程度不同。In some preferred modes, as shown in Figure 4, a plurality of graded heat dissipation passages 5 are respectively provided on the left and right sides of the box body 6, and a baffle plate 24 is arranged at the outer outlet of the graded heat dissipation passage 5, and the baffle plate 24 is connected to the box body. 6 connection, the angle between the baffle plate 24 and the box body 6 determines the degree of heat dissipation; in some preferred ways, the baffle plate 24 is connected to the box body 6 by welding, and in other preferred ways, the baffle plate The plate 24 is hingedly connected with the box body 6, and the baffle plate 24 can be opened, so that the baffle plate 24 is in a certain state; the degree of opening and closing of the baffle plate 24 is different, the angle between the baffle plate 24 and the box body 6 is different, and the degree of heat dissipation is different. .
在一些优选的方式中，如图4所示，所述箱体6后侧中上部设有固定支架7，所述固定支架7上连接有散热风扇8；散热风扇设置在箱体6后侧的原因及好处：这样散热风扇8可以配合箱体6上的分级散热通道，有利于加速空气循环，提高散热效率；散热风扇设置在箱体6的中上部原因及好处：①热空气密度小，分布在箱体6上部，需要尽快排出；②根据冷却管4的设计，冷却管4中冷却液出口位于箱体6上部，因此，冷却管4内的冷却液由箱体6的下部到上部的过程中，冷却液的温度不断上升，设置在中上部的风扇能将这些热量带走一部分，可以加速热量的散去，提高冷却效率。In some preferred modes, as shown in FIG. 4 , the middle and upper part of the rear side of the box body 6 is provided with a fixed bracket 7, and a cooling fan 8 is connected to the fixed bracket 7; the cooling fan is arranged on the rear side of the box body 6 Reasons and benefits: In this way, the cooling fan 8 can cooperate with the graded cooling channels on the box body 6, which is conducive to accelerating air circulation and improving heat dissipation efficiency; the reason and benefits of setting the cooling fan at the middle and upper part of the box body 6: ① The density of hot air is small and the distribution In the upper part of the box body 6, it needs to be discharged as soon as possible; ②According to the design of the cooling pipe 4, the outlet of the cooling liquid in the cooling pipe 4 is located at the upper part of the box body 6, so the cooling liquid in the cooling pipe 4 is from the lower part of the box body 6 to the upper part. In the middle, the temperature of the coolant keeps rising, and the fan installed in the middle and upper part can take away part of the heat, which can accelerate the dissipation of heat and improve the cooling efficiency.
在一些优选的方式中，如图4所示，散热风扇的转轴由固定支架7支撑和固定。In some preferred manners, as shown in FIG. 4 , the rotating shaft of the cooling fan is supported and fixed by a fixing bracket 7 .
显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
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Application publication date: 20191105 |