Heat transport device and storage battery device

Abstract

To provide a heat transport device and a storage battery device that can make the flow of refrigerant uniform by providing multiple pillars in a flow path that allows a refrigerant to flow from one direction to a different direction.SOLUTION: A heat transport device includes a first pipeline through which a refrigerant flows in one direction, a second pipeline through which the refrigerant flows in a direction different from the one direction, a third pipeline that continuously connects the first pipeline and the second pipeline, and a plurality of pillars that are joined to one side and the other side of the third pipeline and are distributed in an area extending downstream from an area where the first pipeline is virtually extended to the second pipeline.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] FIELD An embodiment of the present invention relates to a heat transport device and a storage battery device. [Background technology]

[0002] Even for railway and infrastructure applications, battery packs containing battery cells, which are heat-generating bodies, are limited in number. When the battery pack is made up of rectangular can type cells, the cooling from the bottom For example, a flow path for the refrigerant is provided on the bottom of the battery pack. By providing a heat transport device having the above structure, the battery pack can be cooled and the battery cells in the battery pack can be cooled. There is a method for temperature control. This method causes temperature variations in the battery cells. In order to reduce the heat transfer efficiency, a U-turn flow path is proposed that exchanges heat at two points, upstream and downstream of the heat transport device. I had an idea.

[0003] However, in the U-turn flow path, the refrigerant flows faster on the outer periphery and slower on the inner periphery. There was a problem with the cooling performance being affected by stagnant fluid. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-39178 Summary of the Invention [Problem to be solved by the invention]

[0005] By providing multiple pillars in the flow path that allows the refrigerant to flow from one direction to another, the flow of the refrigerant can be The present invention provides a heat transport device and a storage battery device that can uniformly distribute heat. [Means for solving the problem]

[0006] The heat transport device of the embodiment includes a first pipe through which a refrigerant flows in one direction, and a second pipe through which the refrigerant flows in the first direction. a second pipeline for allowing the flow of the first gas in a direction different from the first pipeline; the first pipeline; and the second pipeline. a third pipe line that continuously connects the first and second pipes, and a third pipe line that is connected to the top and bottom of the third pipe line; In the area downstream of the area where the pipeline is virtually extended, up to the second pipeline. and a plurality of distributed pillars. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view showing a heat transport device according to the first embodiment. [Figure 2] FIG. 2 is a plan view showing the flow of the refrigerant in the heat transport device of the first embodiment. [Figure 3] FIG. 3 is a perspective view of a diverging / converging tube. [Figure 4] FIG. 4 is a cross-sectional view showing gaskets provided on the −X direction sides of the first and second pipelines. [Figure 5] FIG. 5 is a perspective view showing that the first and second pipes are formed by extruded thin pipes. [Figure 6] FIG. 6 is a cross-sectional view showing a method of fitting the first pipeline and the second pipeline together. [Figure 7] FIG. 7 is a cross-sectional view showing gaskets provided on the X-direction sides of the first and second pipelines. [Figure 8] FIG. 8 is a cross-sectional view of the third pipeline of the first embodiment. [Figure 9] FIG. 9 is a perspective view showing the third pipeline of the first embodiment. [Figure 10] FIG. 10 is a plan view showing the results of a simulation of the flow of refrigerant in the third pipe line in FIG. [Figure 11] FIG. 11 is a perspective view showing the third pipeline of the first embodiment. [Figure 12]FIG. 12 is a plan view showing the results of a simulation of the flow of refrigerant in the third pipe line in FIG. [Figure 13] FIG. 13 is a perspective view showing the third pipeline of the first embodiment. [Figure 14] FIG. 14 is a plan view showing the results of a simulation of the flow of refrigerant in the third pipe line in FIG. [Figure 15] FIG. 15 is a perspective view showing the third pipeline of the first embodiment. [Figure 16] FIG. 16 is a plan view showing the results of a simulation of the flow of refrigerant in the third pipe line in FIG. [Figure 17] FIG. 17 is a perspective view showing the third pipeline of the first embodiment. [Figure 18] FIG. 18 is a plan view showing the results of a simulation of the flow of refrigerant in the third pipe line in FIG. [Figure 19] FIG. 19 is a plan view showing the third pipeline (S=2D) of the first embodiment. [Figure 20] FIG. 20 is a plan view showing a simulation result of the flow of the refrigerant in the third pipe (S=2D) of the first embodiment. [Figure 21] FIG. 21 is a plan view showing the third pipeline (S=3D) of the first embodiment. [Figure 22] FIG. 22 is a plan view showing a simulation result of the flow of the refrigerant in the third pipe (S=3D) of the first embodiment. [Figure 23] FIG. 23 is a plan view showing the third pipeline (S=4D) of the first embodiment. [Figure 24] FIG. 24 is a plan view showing a simulation result of the flow of the refrigerant in the third pipe (S=4D) of the first embodiment. [Figure 25] FIG. 25 is a perspective view showing a storage battery device of the second embodiment. [Figure 26] FIG. 26 is a perspective view showing a modified example of the storage battery equipment of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, exemplary embodiments of the present invention will be disclosed. The above and the actions and effects brought about by this configuration are merely examples.

[0009] As shown in Figure 1, in this specification, the X direction, Y direction, and Z direction are defined. X direction is the direction along the X-axis, and is the +X direction indicated by the X-axis arrow and the opposite direction of the X-axis arrow. The Y direction is the direction along the Y axis, and is the +Y direction indicated by the arrow of the Y axis. and the -Y direction, which is the direction opposite to the Y-axis arrow. The +Y direction is counterclockwise relative to the +X direction. The Z direction is the direction along the Z axis, and the arrow of the Z axis is and the -Z direction, which is the opposite direction of the arrow of the Z axis. The Z direction coincides with the upward vertical direction.

[0010] (First embodiment) A heat transport device 1 according to a first embodiment will be described with reference to FIGS.

[0011] FIG. 1 is a perspective view showing a heat transport device 1 according to the first embodiment. FIG. 1 is a plan view showing the flow of a refrigerant in the heat transport device 1. FIG.

[0012] A battery pack 100 (not shown) is mounted on the upper surface of the heat transport device 1 in FIG. The heat transport device 1 includes a battery pack (not shown) and a fixed battery. The battery pack 100 is fastened to the battery pack 100 with a bolt 32. will be done.

[0013] The heat transport device 1 shown in FIG. 1 includes an inlet 10 into which a refrigerant flows, and a heat pump 11 that is connected to the inlet 10. A first pipe 12 that flows the refrigerant in the +X direction, and a second pipe 12 that flows the refrigerant in the +X direction. a third pipe 14 through which the refrigerant flows, and a third pipe 14 through which the refrigerant flows in the -X direction. The refrigerant is discharged from the second pipe 18 through an outlet 20. do.

[0014] The flow of the refrigerant is indicated by the arrow direction in Figure 2. As shown in Figure 2, The refrigerant flows through the first pipe 12, the third pipe 14, and the second pipe 18 in this order, and then flows out of the outlet port. The refrigerant flows out from the inlet 1 through the outlet 20. A pump (not shown) is controlled to discharge the refrigerant at a predetermined rate. is sent to 0.

[0015] FIG. 3 is a perspective view of a diverging / converging tube.

[0016] The inlet 10 is an inlet for introducing the refrigerant into the first pipe 12 and is made of a diffuser. As shown in FIG. 3, the refrigerant inlet of the inlet portion 10 faces the +Z-axis direction. The inside of the first pipe 12 gradually widens so that the refrigerant flows from the first pipe 12 to the second pipe 12. As shown in FIG. 3, the refrigerant flowing in from the refrigerant inlet is divided equally into two first pipes 12. In order to achieve this, reinforcing ribs 22 are provided inside the inlet portion 10 at positions extending in the X direction. .

[0017] The diffuser is integrally molded from a resin material, so it is necessary to increase its strength. The tube is provided with reinforcing ribs 22 to enable it to withstand pressure. In addition, the reinforcing rib 22 not only guides the flow of the refrigerant so as to diffuse it, but also It also plays a role in increasing the strength of 0.

[0018] Furthermore, an opening 11 through which the refrigerant flows out is provided on the first pipe line 12 side of the inlet portion 10.

[0019] FIG. 4 shows a gasket 38 provided on the −X direction side of the first pipe 12 and the second pipe 18. FIG.

[0020] Between the opening 11 provided on the first pipe 12 side of the inlet 10 and one end of the first pipe 12 are connected via a gasket 38 having two flow paths as shown in FIG. The gasket 38 is provided with a notch 40 for screw fastening, and the gasket 38 is fitted to the connecting surface. After that, they are fastened together with screws or bolts.

[0021] The opening 11 of the inlet 10 is connected to one end of the first pipe 12, thereby forming the inlet 1 The refrigerant flowing in from 0 flows into the first pipe 12.

[0022] FIG. 5 is a perspective view showing that the first conduit 12 and the second conduit 18 are formed by extruded capillaries. 6 is a cross-sectional view showing a method of fitting the first pipeline 12 and the second pipeline 18 together.

[0023] The first pipe 12 is a pipe having a flow path therein and extending in the X direction. In claim 1, the one direction refers to the X direction.

[0024] As shown in Figure 5, the first conduit 12 is formed of an extruded capillary tube. It is made by cutting extruded metal material such as aluminum or copper.

[0025] As shown in FIG. 6, a notched extrusion material 42C having a notch at the end of an extruded thin tube, The extrusions 42D and 42C are made so that their ends fit together. The extrusion material 42D and the bolt fastening portion 34 are provided, so that the screws can be passed through while they are fitted together. and secure it in place.

[0026] In this way, by fitting the extruded thin tubes together, the two first pipes 12 are integrally formed. It is completed.

[0027] The refrigerant that flows into the first pipe 12 flows into the second pipe 18 via the third pipe 14. The configuration will be explained below.

[0028] At both ends of the third pipe 14 in the Y direction, which are the inlet and outlet of the third pipe 14, screw holes 36 are provided. The screw holes 36 allow the third pipe 14 to be connected to the first pipe 12 and the second pipe 13. The pipe 18 is fastened to the pipe 18 with bolts.

[0029] Between the other end of the first pipeline 12 and one end of the third pipeline 14, and between the other end of the third pipeline 14 and the Between the first end of the second pipe 18 and the second end of the second pipe 18, a gasket 39 having three flow paths as shown in FIG. The gasket 39 is provided with a notch 40 for screw fastening, After the gasket 39 is fitted to the surface, the surfaces are joined together with screws or bolts.

[0030] The other end of the first pipe 12, one end of the third pipe 14, and the other end of the third pipe 14, The first pipe 12 and the second pipe 18 are connected to each other. The line 18 is connected in series by a third line 14 .

[0031] The other end of the first pipe 12 is connected to one end of the third pipe 14, thereby forming a first The refrigerant that has passed through the line 12 flows out into a third line 14 .

[0032] The other end of the third pipe 14 is connected to one end of the second pipe 18, thereby forming a third The refrigerant that has passed through the line 14 flows out into a second line 18 .

[0033] The second pipe 18 is a pipe having a flow path therein and extending in the X direction. In claim 1, the different direction of the second pipe 18 is the same as the one direction of the first pipe 12. This is a different direction from the -X direction.

[0034] The second pipe 18, like the first pipe 12, is formed of an extruded thin tube as shown in FIG. The extruded thin tubes are fitted together to form two second pipes 18 integrally.

[0035] The other end of the second pipe 18 and the opening 2 of the outflow section 20 provided on the other end side of the second pipe 18 1 and the second pipe 18 are connected, the refrigerant that has passed through the second pipe 18 flows into the outflow portion 20. .

[0036] Between the opening 21 provided in the outflow portion 20 and the other end of the second pipe 18, the first pipe 12 4, as well as between the opening 11 of the inlet 10 and one end of the first pipe 12. The two flow paths are connected via a gasket 38. The gasket 38 is After the gasket 38 is fitted to the connection surface, the connection notch 40 is inserted into the screw or bolt. Thus, they are joined.

[0037] The outlet 20 is made of a reduction pipe. The medium outlet faces the +Z axis.

[0038] Similar to the inlet portion 10, the outlet portion 20 has a reinforcing rib extending in the X direction of the reduction pipe. By providing the reinforcing ribs 22, the guide is provided to diffuse the flow of the refrigerant. This increases the strength of the outflow portion 20.

[0039] The refrigerant that has passed through the outlet portion 20 flows out from the other end of the inlet portion 10, which is a refrigerant outlet.

[0040] Next, the configuration of the third pipeline will be described with reference to FIGS.

[0041] 8 is a cross-sectional view of the third pipe 14 of the first embodiment. The conduit 14 includes a top surface 17 and a plurality of posts 16 joined to a bottom surface.

[0042] The top surface 17 and the bottom surface of the third pipe 14 are surfaces that extend perpendicular to the Z direction.

[0043] The plurality of pillars 16 are formed at a height that contacts the upper surface 17 of the third pipe 14. The upper surface 17 of the 4 and the plurality of columns 16 are joined by vibration welding. , screw holes 36 are provided between the inlet and outlet of the third pipe 14 and at both ends of the third pipe 14 in the Y direction. The screw hole 36 is provided to connect the third pipe 14, the first pipe 12, and the The second pipeline 18 is fastened with bolts.

[0044] In this embodiment, the third pipe 14 is drawn in a semicircular shape, but it is not limited to a pipe that can circulate a refrigerant. If it can be made to fit, it does not necessarily have to be semicircular. For example, it can have corners or straight lines. .

[0045] 9 is a perspective view showing the third pipe 14 of the first embodiment. In the third pipeline 14, a plurality of columns 16 are arranged in a virtual extension of the first pipeline 12 within the third pipeline 14. The second pipe 18 is provided so as to be distributed in the region up to the second pipe 18 on the downstream side.

[0046] FIG. 10 is a diagram showing a simulation result of the flow of the refrigerant in the third pipe 14 in FIG. is.

[0047] As shown in FIG. 10, a plurality of pillars 16 are virtually arranged in the first pipeline 12 within the third pipeline 14. The pipes are distributed in the area extending downstream from the extended area to the second pipe 18. As a result, the refrigerant hits the pillars 16 and flows inside the third pipe 14. This makes it possible to make the flow of the refrigerant uniform near the outlet of the third pipe 14. Stagnation near the outlet of the third pipe 14 is suppressed.

[0048] Fig. 11 is a perspective view showing the third pipe 14 of the first embodiment. In the third pipeline 14, a plurality of columns 16 are provided to virtually extend the first pipeline 12 within the third pipeline 14. The convex portions are provided in a region extending from the region to the second pipe 18 downstream thereof. The ridge portion 15 is provided so as to cross the third pipeline 14 .

[0049] The protruding portion 15 fastens the third pipe 14 to the first pipe 12 and the second pipe 18 with bolts. When fastening the wire, it is preferable to have a protrusion in the flow path so as to avoid bolts and tools (not shown). It will be established.

[0050] As shown in FIG. 11, the protruding portion 15 is formed on an extension line of one side wall of the first pipe line 12. In addition, the protruding portion 15 is provided at a location immediately adjacent to the entrance of the third pipeline 14. The protruding portion 15 may be formed along the entire length of the third pipe 14 on the extension line of the first pipe 12. and is formed at a predetermined height from the other surface of the third pipe 14.

[0051] A convex portion 15 is provided at this location, and the third pipe 14, the first pipe 12, and the second pipe 13 are connected to each other. By fastening the pipe 18 with bolts, it can be fixed more firmly.

[0052] FIG. 12 shows the results of a simulation of the flow of refrigerant in the third pipe 14 in FIG. Figure.

[0053] As shown in FIG. 12, a plurality of pillars 16 are virtually arranged in the first pipeline 12 within the third pipeline 14. The pipes are distributed in the area extending downstream from the extended area to the second pipe 18. As a result, the refrigerant hits the pillars 16 and flows inside the third pipe 14. This makes it possible to make the flow of the refrigerant uniform near the outlet of the third pipe 14. Stagnation near the outlet of the third pipe 14 is suppressed.

[0054] In addition, even if the protruding portion 15 is provided so as to cross the third pipe 14, the flow of the refrigerant can be made uniform. It turns out that there is no effect on

[0055] 13 is a perspective view showing the third pipe 14 of the first embodiment. In the third pipeline 14, a plurality of columns 16 are provided to virtually extend the first pipeline 12 within the third pipeline 14. and a downstream side of the region where the first pipe 12 is virtually extended in the third pipe 14. The protruding portions 15 are provided in a region extending from the first pipe 18 to the second pipe 18, and are distributed in the region extending from the second pipe 18 to the third pipe 18. It is provided so as to cross the inside of the pipeline 14 .

[0056] FIG. 14 shows the results of a simulation of the flow of refrigerant through the third pipe 14 in FIG. 13. Figure.

[0057] As shown in FIG. 14, a plurality of pillars 16 are virtually arranged in the first pipeline 12 within the third pipeline 14. the extended region and the downstream of the virtual extended region of the first pipe 12 in the third pipe 14; By distributing the refrigerant in the region up to the second pipe 18 on the side where the refrigerant The refrigerant hits the plurality of pillars 16, and flows inside the third pipe 14. Even if the first pipe 12 in the pipe 14 is provided in a virtually extended region, the outlet of the third pipe 14 This makes it possible to make the flow of the refrigerant uniform near the outlet of the third pipe 14, thereby preventing sediment from forming near the outlet of the third pipe 14. The noise is suppressed.

[0058] In addition, even if the protruding portion 15 is provided so as to cross the third pipe 14, the flow of the refrigerant can be made uniform. It turns out that there is no effect on

[0059] Fig. 15 is a perspective view showing the third pipe 14 of the first embodiment. In the pipeline 14, a plurality of columns 16 are provided to virtually extend the first pipeline 12 into the third pipeline 14. The area up to the first pipe 12 on the upstream side of the area, and the first pipe in the third pipe 14 The area extending from the first pipe 12 to the second pipe 18 downstream of the area where the first pipe 12 is virtually extended. The areas are distributed in the following manner.

[0060] FIG. 16 shows the results of a simulation of the flow of refrigerant in the third pipe 14 in FIG. 15. Figure.

[0061] As shown in FIG. 16, a plurality of pillars 16 are arranged in a virtual manner so that the first pipeline 12 is arranged inside the third pipeline 14. The area up to the first pipe 12 on the upstream side of the extended area, and the third pipe 14 The second pipe 18 is located downstream of the region where the first pipe 12 is virtually extended. By distributing the refrigerant in the area up to the column 16, the refrigerant hits the multiple columns 16 and The first pipe 12 is connected to the third pipe 14 through a plurality of pillars 16. Even if the protruding portion 15 is not provided, the protruding portion 15 is provided in the virtually extended region, and the protruding portion 15 is not provided in the vicinity of the outlet of the third pipe 14. This makes it possible to make the flow of the refrigerant uniform in the third pipe 14, thereby preventing stagnation near the outlet of the third pipe 14. Be controlled.

[0062] Fig. 17 is a perspective view showing the third pipe 14 of the first embodiment. In the third pipe 14, a plurality of pillars 16 are provided distributed over the entire area within the third pipe 14.

[0063] FIG. 18 shows the results of a simulation of the flow of refrigerant in the third pipe 14 in FIG. 17. Figure.

[0064] As shown in FIG. 18, a plurality of columns 16 are distributed over the entire area of ​​the third pipeline 14. By distributing the columns 16 in a distributed manner, the refrigerant hits the columns 16 and flows through the third pipe 14. A plurality of pillars 16 are provided in the entire area of ​​the third pipe 14, and the protruding portion 15 is not provided. Even if the flow rate of the refrigerant is low, the flow rate of the refrigerant near the outlet of the third pipe 14 can be made uniform. Stagnation near the outlet of the pipe 14 is suppressed.

[0065] In this embodiment, the multiple pillars 16 are formed to have a round cross section with a diameter of 10 mm. Hereinafter, D=10 mm.) The cross section of the plurality of pillars 16 is not limited to a perfect circle, but may be an ellipse or other shape. The leading and trailing ends of the medium flow path may be rounded. The diameter of 16 is 5 mm or more, which makes injection molding easy for mass production. The diameter of the pillars 16 may be 10 mm or more if it is possible to suppress stagnation.

[0066] The positions of the plurality of pillars 16 provided in the third pipeline 14 will be explained with reference to FIGS. 19 to 24. To lighten.

[0067] Fig. 19 is a plan view showing the third pipe 14 (S=2D) of the first embodiment. The plurality of pillars 16 are arranged such that the distance S between the center of one pillar and the center of the adjacent pillar is 2D (twice the diameter of the pillar). It has become.

[0068] FIG. 20 shows the results of a simulation of the flow of refrigerant through the third pipe 14 in FIG. Figure.

[0069] As shown in FIG. 20, the plurality of pillars 16 are arranged so that the center of the pillar in the third pipe 14 and the center of the adjacent pillar are By distributing the columns 16 so that the distance from the center is 2D, the refrigerant hits multiple columns 16. The refrigerant flows inside the third pipe 14. As a result, the refrigerant flows in the vicinity of the outlet of the third pipe 14. This makes it possible to make the flow of the refrigerant uniform, thereby suppressing stagnation near the outlet of the third pipe 14. will be done.

[0070] FIG. 21 is a plan view showing the third pipe 14 (S=3D) of the first embodiment. The plurality of pillars 16 are arranged such that the distance S between the center of one pillar and the center of the adjacent pillar is 3D (three times the diameter of the pillar). It has become.

[0071] FIG. 22 shows the results of a simulation of the flow of refrigerant in the third pipe 14 in FIG. 21. Figure.

[0072] As shown in FIG. 22, the plurality of pillars 16 are arranged so that the center of the pillar in the third pipe 14 and the center of the adjacent pillar are By distributing the columns 16 so that the distance from the center is 3D, the refrigerant hits multiple columns 16. The refrigerant flows inside the third pipe 14. As a result, the refrigerant flows in the vicinity of the outlet of the third pipe 14. This makes it possible to make the flow of the refrigerant uniform, thereby suppressing stagnation near the outlet of the third pipe 14. will be done.

[0073] Fig. 23 is a plan view showing the third pipe 14 (S=4D) of the first embodiment. The plurality of columns 16 are arranged such that the distance S between the center of one column and the center of the adjacent column is 4D (four times the diameter of the column). It has become.

[0074] FIG. 24 shows the results of a simulation of the flow of refrigerant in the third pipe 14 in FIG. 23. Figure.

[0075] As shown in FIG. 24, the plurality of pillars 16 are arranged so that the center of the pillar in the third pipe 14 and the center of the adjacent pillar are By distributing the columns so that the distance from the center is 4D, the refrigerant hits multiple columns 16. The refrigerant flows inside the third pipe 14. As a result, the refrigerant flows in the vicinity of the outlet of the third pipe 14. This makes it possible to make the flow of the refrigerant uniform, thereby suppressing stagnation near the outlet of the third pipe 14. will be done.

[0076] However, the effect of suppressing stagnation is beginning to decrease in some areas. When formed with a 10 mm round shape, the distance from the center of a pillar to the center of an adjacent pillar is 4D. If the temperature is more than this, the effect of suppressing stagnation will be reduced, which is not preferable.

[0077] From the simulation results, it was found that the cross sections of the multiple pillars 16 were formed in a circular shape with a diameter of 10 mm. If the distance between the center of the pillar and the center of the adjacent pillar is 2D or more and less than 4D, the third pipe 1 It can be seen that it is possible to make the flow of the refrigerant uniform near the outlet of 4.

[0078] If the distance from the center of a pillar to the center of an adjacent pillar is less than 2D, injection molding is required for mass production. However, there is a problem in that it is very difficult to make the mold for this purpose.

[0079] The third pipe 14, the ridge portion 15, and the plurality of columns 16 are made of a thermoplastic resin. Specific materials include PPS (polyphenylene ether), m-PPE (modified polyphenylene ethers) and the like.

[0080] In this way, the heat transport device 1 of the first embodiment has a plurality of columns 16 provided in the third pipe 14. By doing so, it is possible to prevent refrigerant stagnation and allow the refrigerant to circulate. It can efficiently transport body heat and cool down heat-generating bodies.

[0081] (Second embodiment) Next, a storage battery equipment according to a second embodiment will be described with reference to FIG.

[0082] FIG. 25 is a perspective view showing a storage battery device of the second embodiment.

[0083] The storage battery device is mounted on various vehicles such as railway cars and automobiles, and The plurality of storage battery devices can be arranged, for example, vertically. In addition, the plurality of storage battery devices are electrically connected in series or in parallel, for example. .

[0084] The battery device includes a battery pack 100 and a heat transport device 1 provided below the battery pack 100. As shown in FIG. 25, in this embodiment, the battery pack 100 is arranged in 3 rows and 2 columns, totaling six pieces. The battery pack 100 and the heat transport device 1 are fastened together by bolts (not shown). do.

[0085] Among the six battery packs 100, the battery packs 104 and 105 arranged in the center row are It is difficult for heat to dissipate and the temperature tends to rise. Therefore, it is arranged in the center row where the temperature tends to rise. A first pipe 12 through which the coldest refrigerant flows is arranged under the battery packs 104 and 105. That is, two first pipes 12 are provided under the battery packs 104 and 105 in the center row. One end of the first pipe 12 is connected to the third pipe 14, and the other end of the first pipe 12 is connected to the third pipe 14. It is connected to a second pipe 18 arranged outside the first pipe 12 .

[0086] Then, one row of assembled batteries 104, 105 is placed on the two first pipes 12 arranged in the center. are arranged on the four second pipes 18 arranged on both sides of the two first pipes 12. The battery packs 102, 103, 106, and 107 are arranged in rows.

[0087] Therefore, the two central assembled batteries 104 and 105 are exposed to the upstream refrigerant flowing through the first pipe 12. The four batteries 102, 103, 106, and 107 in the outer two rows are cooled by the second tube. The refrigerant flows through the passage 18 and is cooled by the refrigerant on the downstream side. The battery packs 104 and 105 in the row are cooled by the coldest refrigerant. 100 is cooled evenly.

[0088] The number and length of the extruded thin tubes of the first pipe 12 and the second pipe 18 are determined to match the dimensions of the battery pack 100. Therefore, the number of sheets may be increased or the length may be increased. Depending on the size of the second conduit 18, the second conduit 18 may be in a single row.

[0089] Next, a modification of the second embodiment will be described with reference to FIG.

[0090] Regarding each part of the modified example of the second embodiment, the battery device of the second embodiment shown in FIG. The same parts as those of the cooling device are denoted by the same reference numerals, and detailed explanations thereof will be omitted. In this modified embodiment, the refrigerant outlet, which is the other end of the outflow portion 20, is in the -Z direction, compared to the second embodiment. It is facing towards.

[0091] The inlet port at one end of the inlet portion 10 is oriented in the +Z direction, so that the refrigerant flows into the first pipe by gravity. The discharge port at the other end of the outflow section 20 is oriented in the −Z direction. By orienting the second pipe 18 in this direction, the refrigerant flows in the direction of gravity, so that the refrigerant in the second pipe 18 easily flows out. .

[0092] Although several embodiments of the present invention have been described, these embodiments are presented by way of example only. These novel embodiments are not intended to limit the scope of the invention. The present invention can be embodied in various forms, and various modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are within the scope of the invention and It is included in the summary and in the scope of the invention described in the claims and their equivalents. . [Explanation of symbols]

[0093] 1 Heat transport device 10 Inlet 11 Inlet opening 12 First Pipeline 14 Third Pipeline 15 Convex portion 16 Multiple Pillars 17 Top of the third pipe 18 Second Pipeline 20 Outlet 21 Outlet opening 22 Reinforcing rib 100 battery packs

Claims

1. a first pipe through which a refrigerant flows in one direction; a second pipe through which the refrigerant flows in a direction different from the one direction; a third pipeline that continuously connects the first pipeline and the second pipeline; The third pipe is connected to the top and bottom surfaces of the third pipe, and is larger than a region obtained by virtually extending the first pipe. a plurality of pillars distributed in an area extending to the second pipeline on the downstream side of the first pipeline; A heat transport device comprising:

2. A ridge portion is provided in the third pipeline so as to cross the third pipeline. The heat transport device according to claim 1.

3. The plurality of pillars are distributed in a region that is a virtual extension of the first pipeline within the third pipeline. will be The heat transport device according to claim 1.

4. The plurality of pillars have a cross-sectional diameter of 5 mm or more (the diameter is represented as D), and The distance between the center and the center of the adjacent pillar is between 2D and 4D. The heat transport device according to any one of claims 1 to 3.

5. The plurality of pillars are joined to the upper surface of the third pipeline by vibration welding. The heat transport device according to claim 1 .

6. The refrigerant is diverted from the first pipe line and flows through two second pipe lines; The heat transport device according to claim 1 .

7. an inlet portion through which the refrigerant flows into the first pipe; and an outlet portion through which the refrigerant flows out of the second pipe. and The inlet and outlet portions are formed by converging and contracting pipes, A reinforcing rib is provided inside the expansion / contraction tube. The heat transport device according to claim 1 .

8. a first pipe through which a refrigerant flows in one direction; a second pipe through which the refrigerant flows in a direction different from the one direction; a third pipeline that continuously connects the first pipeline and the second pipeline; The third pipe is connected to the top and bottom surfaces of the third pipe, and is larger than a region obtained by virtually extending the first pipe. a plurality of pillars distributed in an area extending to the second pipeline on the downstream side of the first pipeline; a heat transport device comprising: a battery pack disposed on the upper surface of the heat transport device; A storage battery device having:

9. an inlet portion through which the refrigerant flows into the first pipe; and an outlet portion through which the refrigerant flows out of the second pipe. and The refrigerant inlet of the inlet portion is higher than the opening of the inlet portion connected to the first pipe line. It is formed in a suitable position, The refrigerant outlet of the outlet portion is lower than the opening of the outlet portion connected to the second pipe. formed in a suitable location, The storage battery device according to claim 8.

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