Heat transport equipment and energy storage equipment

The heat transport device addresses temperature control challenges in battery packs by managing fluid flow through adjustable connections, ensuring uniform cooling and preventing performance degradation.

JP2026061340APending Publication Date: 2026-04-09KK TOSHIBA
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2026-04-09

AI Technical Summary

Technical Problem

The challenge of effectively cooling and temperature controlling battery packs in limited spaces while ensuring uniform temperature distribution among battery cells to prevent performance degradation and system output limitations due to temperature variations.

Method used

A heat transport device with a conduit system for a fluid, featuring adjustable inlet and outlet connections and closing members to manage fluid flow, allowing selective control over the cooling medium's path and distribution across multiple battery packs.

Benefits of technology

Enables efficient temperature management of battery packs, preventing degradation and ensuring consistent performance by uniformly distributing cooling medium, thereby reducing system output limitations.

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Abstract

The present invention provides a heat transport device and an energy storage device that appropriately cool and heat a heat-receiving component. [Solution] The heat transport device 10 of this embodiment comprises a heat receiving member 12 having a conduit for a fluid to pass through inside, a first connecting member 20 provided at one end of the heat receiving member and having a fluid inlet or outlet formed on one side and the other opposite side, and for which the fluid flowing in from the inlet flows out to the conduit or outlet of the heat receiving member, a second connecting member 22 provided at the other end of the heat receiving member and having a fluid inlet or outlet formed on one side and the other opposite side, for which the fluid that has flowed through the conduit of the heat receiving member or the fluid that has flowed in from the inlet flows out to the outlet, and a member mounting part for attaching a closing member or pipe 28 that selectively closes the outlet of the first connecting member and the inlet of the second connecting member.
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Description

Technical Field

[0004] , , , , , ,

[0001] Embodiments of the present invention relate to a heat transport device and a power storage device.

Background Art

[0002] In railway applications, general industrial applications, and infrastructure applications, battery packs containing battery cells are densely arranged in a limited space. When cooling by receiving heat from the battery pack, which is a heat-receiving member containing a large number of battery cells as heating elements, a heat transport device having a flow path for a refrigerant is provided on the bottom surface of the battery pack, and a plurality of stages of the battery pack and the heat transport device are stacked up to cool the battery pack and control the temperature of the battery cells in the battery pack. In such a case, it is necessary to house the battery pack in a limited space and provide pipes for flowing a cooling medium through each of the plurality of stages of heat transport devices. There is a method of cooling the battery pack and controlling the temperature of the battery cells in the battery pack by stacking a plurality of stages of the battery pack and the heat transport device. In such a case, it is necessary to house the battery pack in a limited space and provide pipes for flowing a cooling medium through each of the plurality of stages of heat transport devices. When cooling by receiving heat from the battery pack, which is a heat-receiving member containing a large number of battery cells as heating elements, a heat transport device having a flow path for a refrigerant is provided on the bottom surface of the battery pack, and a plurality of stages of the battery pack and the heat transport device are stacked up to cool the battery pack and control the temperature of the battery cells in the battery pack. There is a method of cooling the battery pack and controlling the temperature of the battery cells in the battery pack by stacking a plurality of stages of the battery pack and the heat transport device. In such a case, it is necessary to house the battery pack in a limited space and provide pipes for flowing a cooling medium through each of the plurality of stages of heat transport devices. There is a method of cooling the battery pack and controlling the temperature of the battery cells in the battery pack by stacking a plurality of stages of the battery pack and the heat transport device. In such a case, it is necessary to house the battery pack in a limited space and provide pipes for flowing a cooling medium through each of the plurality of stages of heat transport devices. In such a case, it is necessary to house the battery pack in a limited space and provide pipes for flowing a cooling medium through each of the plurality of stages of heat transport devices. There is a need to provide pipes for flowing a cooling medium through each of the plurality of stages of heat transport devices.

[0003] In addition, depending on the usage conditions, the battery cells deteriorate from their temperature and voltage history, and there may be a difference in the degree of deterioration such as an increase in internal resistance and a decrease in capacity. Therefore, when a large number of battery cells are housed in a battery pack as a battery system, it is necessary to smooth the temperature distribution without temperature variation between the battery cells. If the use of the battery system device continues in a state where there is temperature variation, the deterioration of the battery cells will vary, and the performance of the entire system must be adjusted according to the battery cells with low capacity and high internal resistance and a large amount of heat loss. There is a risk that system output limitations and the like will occur. In addition, depending on the usage conditions, the battery cells deteriorate from their temperature and voltage history, and there may be a difference in the degree of deterioration such as an increase in internal resistance and a decrease in capacity. Therefore, when a large number of battery cells are housed in a battery pack as a battery system, it is necessary to smooth the temperature distribution without temperature variation between the battery cells. If the use of the battery system device continues in a state where there is temperature variation, the deterioration of the battery cells will vary, and the performance of the entire system must be adjusted according to the battery cells with low capacity and high internal resistance and a large amount of heat loss. There is a risk that system output limitations and the like will occur. If the use of the battery system device continues in a state where there is temperature variation, the deterioration of the battery cells will vary, and the performance of the entire system must be adjusted according to the battery cells with low capacity and high internal resistance and a large amount of heat loss. There is a risk that system output limitations and the like will occur. There is a risk that system output limitations and the like will occur.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] The problem that this invention aims to solve is the issue of mounting a heat-receiving component, such as a battery pack, which requires temperature control. To selectively connect or close the inlet and outlet of the fluid to the heat receiving member. By providing a heat transport device that can appropriately cool and heat the heat-receiving component, be. [Means for solving the problem]

[0006] The heat transport device of this embodiment includes a heat receiving member having a conduit for passing a fluid through it, and the heat receiving A fluid inlet or outlet is provided at one end of the heating element, with one end and the other opposite to the first end. A structure is formed, and the fluid flowing in from the inlet is directed through the pipeline of the heat receiving member or the flow A first connecting member that flows out to the outlet, and provided at the other end of the heat receiving member, one and the other An inlet or outlet for the fluid is formed on the other side, and the fluid flows through the pipe of the heat receiving member. A second connecting member that allows a moving body or a fluid that has flowed in from the inlet to flow out to the outlet, and A closing member that selectively closes the outlet of the first connecting member and the inlet of the second connecting member It comprises a mounting part for the component to be attached. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view showing a heat transport device. [Figure 2] This is a plan view showing the heat receiving component. [Figure 3] This figure shows tapping holes formed in the heat receiving member. [Figure 4]It is a perspective view showing an example in which a first connection member and a second connection member are joined. [Figure 5] It is a perspective view showing a branch member which is one of the connection members when the connection member is divided vertically. [Figure 6] It is a perspective view showing a mortar-shaped member which is the other connection member when the connection member is divided vertically. [Figure 7] It is a perspective view showing a first connection member and a second connection member provided with holes for joining to a heat receiving member. [Figure 8] It is a perspective view showing a configuration in which a pipe is connected to a first connection member and a second connection member. [Figure 9] It is a perspective view showing an example in which a closing member is provided at an outlet. [Figure 10] It is a plan view of an example in which six sets of assembled batteries are mounted on the upper surface of a heat transport device. [Figure 11] It is a perspective view representing a power storage device. [Figure 12] It is a conceptual diagram explaining the flow of a fluid in a heat transport device. [Figure 13] It is a conceptual diagram explaining the flow of a fluid in a heat transport device.

Embodiments for Carrying Out the Invention

[0008] [[ID=3第4]] Hereinafter, embodiments for carrying out the invention will be described.

[0009] The heat transport device 10 of the present embodiment will be described with reference to FIG. 1.

[0010] In the following description, as the heat transport device 10, a heat sink for cooling the assembled battery 102 will be taken as an example for explanation, but the heat transport device 10 is not limited to a heat sink. In cold regions, if the temperature of the assembled battery 102 is low, the performance of the battery cells will deteriorate, so the assembled battery 102 may be heated. Therefore, the heat transport device 10 is not limited to a heat sink, and it is needless to say that it can also be applied as a heating device for the assembled battery 102. It is correct. Furthermore, the fluid used in the heat transport device 10 contains a cooling medium and a heating medium. A medium is used. In the following explanation, it will be described as a fluid or a cooling medium.

[0011] Figure 1 is a perspective view showing the heat transport device 10. The heat transport device 10 shown in Figure 1 has six receiving This shows an example where the heat receiving members 12 are arranged parallel to each other in the longitudinal direction. One end of the three heat receiving members 12. An inlet 16 is formed in the first connecting member 20 provided therein, and cold water flows in from the inlet 16 The diagram shows a configuration in which the fluid, which is the cooling medium, is branched out into the pipelines 14 of the three heat receiving members 12. Furthermore, at the other end of the heat receiving member 12, the pipe 14 of the heat receiving member 12 is connected from the first connecting member 20. The incoming fluid is discharged from the second connecting member 22, which has an outlet 18 formed therein. It is.

[0012] Furthermore, the outlet 18 of the second connecting member provided at the other end of the heat receiving member 12, and the outlet 18 It is equipped with a pipe 28 that flows into the conduit of the adjacent heat receiving member 12. To connect the inlet 16 and the outlet 18, one end of the piping 28 and the inlet 16 and the outlet 18 A hose nipple (not shown) may be attached to the other end.

[0013] The heat receiving member 12 is made of an extruded porous tube. In this embodiment, the heat receiving member 12 is made of an extruded porous tube. However, it is not limited to extruded porous pipes as long as the conduit 14 passes through it. Inside 2, a conduit 14 is formed through which a cooling medium (fluid) passes. In this embodiment, Although six conduits 14 are provided for each heat receiving member 12, the number of conduits 14 is limited. It is not possible. Also, although six heat receiving members 12 are provided for each heat transport device 10, The number of heat-receiving members 12 is not limited. The heat-receiving member 12 is made of aluminum billet with high thermal conductivity. It is formed from the following: That is, an aluminum material is set in a dedicated extrusion die with a desired flow channel shape, The porous tube is formed by applying pressure and extruding it. Because it is formed in a long, tubular shape, it is cut to the desired length after molding before use. It is possible.

[0014] Furthermore, six battery packs 102 (not shown) are placed on top of the heat receiving member 12 (see Figure 12). (Illuminated), the heat receiving member 12 receives the heat generated from the battery pack 102. The conduit 14 of the heat receiving member 12 The cooling medium through which it passes transports the heat received from the battery pack 102.

[0015] Connecting members 20 and 22 are provided at both ends of the heat receiving member 12. Sections 0 and 22 are provided with an inlet 16 and an outlet 18 for the cooling medium, but details will be provided later. I will explain.

[0016] The first connecting member 20 is provided on one end of the conduit 14. The 20 is provided with an inlet 16 into which the cooling medium flows. The first connecting member 20 is The cooling medium that flows in from the opening 16 flows out into the conduit 14 of the heat receiving member 12. Or, the first connection part Material 20 adds the cooling medium that flows in from the inlet 16 to the pipe 14 and also flows out to the outlet 18. ru.

[0017] Thus, as shown in Figure 1, the first connecting member 20 is located on the longitudinal surface of the heat receiving member 12. On the other side, the upper side, is provided with an inlet 16 for the cooling medium. On the other side, that is, the lower side, opposite the inlet 16 of the connecting member 20, is the outlet 18 for the cooling medium. It is provided. Furthermore, the first connecting member 20 receives the cooling medium that has flowed in from the inlet 16. It is also possible to discharge into pipeline 14.

[0018] Furthermore, as shown in Figure 1, a second connecting member 22 is provided at the other end of the heat receiving member 12. The second connecting member 22 has the same structure as the first connecting member 20, and the heat receiving member 12 An outlet 18 for the cooling medium is provided on the lower side, which is one of the longitudinal surfaces. The cooling medium that has flowed through the conduit 14 passes through the second connecting member 22. It can then be discharged from outlet 18.

[0019] The piping 28 connects the inlets and outlets of the cooling medium of the first connecting member 20 and the second connecting member 22. They are connected to each other. This allows adjacent heat receiving members 12 to be arranged side by side in the lateral direction. In Figure 1, This shows a configuration in which three heat receiving members 12 are arranged side by side with three heat receiving members 12 that are adjacent to each other in the lateral direction. .

[0020] In this embodiment, for example, a liquid medium is used as the fluid. The upper part of the heat receiving member 12 is shown. A non-conforming battery pack 102 is placed (see Figure 12), and the temperature of the heat generated from the battery pack 102 is high. In some cases, a cooled liquid medium is used to cool the battery pack. Also, when used in cold climates, The battery pack temperature is low, preventing it from performing at its full potential. Therefore, the initial operation of the battery pack... Sometimes, a preheated heating medium is flowed through the fluid to heat the battery pack 102 during operation. To do so. The liquid medium used is water or antifreeze. Antifreeze is, for example, ethylene glycol. It is a mixture of [something] and water.

[0021] Next, the state in which multiple heat receiving members 12 are connected will be explained with reference to Figures 2 and 3.

[0022] Figure 2 is a plan view showing the heat receiving member 12. The heat receiving member 12 has a conduit 14 through which the cooling medium passes. It consists of extruded porous tubes equipped with [a specific feature], and the extruded porous tubes are arranged in parallel and connected. By arranging several in parallel, the ends of the extruded porous tubes in the shorter direction are fitted together and fastened with bolts. They are connected. In this way, by fastening them with bolts, the heat receiving members can be arranged almost in parallel. Cut.

[0023] The longitudinal ends of the connected extruded porous tubes are connected to a first connecting member 20 and a second connecting member. A relief section 30 is provided for attaching 22. In Figure 2, the relief section 30 is curved. It is formed, but may have straight lines or corners. The relief section 30 connects the extruded porous tubes. It is preferable to cut beforehand, but cut the relief portion 30 after connecting the extruded porous tubes. It may be formed.

[0024] Figure 3 shows the tapping holes 34 formed in the heat receiving member. Extruded porous tube and The tapping holes 34 for connecting the first connecting member 20 and the second connecting member 22 are long It is provided at one end in the hand direction. This tapping hole 34 and the first connecting member 20 and The second connecting member 22 is fastened with a tapping screw, thereby connecting the extruded porous pipe and the first connecting member 2 The 0 and the second connecting member 22 are connected. The tapping hole 34 is formed when the extruded porous tube is molded. The tapping holes 34 formed during molding and the tapping holes formed by additional processing after molding. There is a 34. The first connecting member 20 and the second connecting member 22 are fixed to the extruded porous tube. For example, the fixing screws used for this purpose are self-tapping screws that cut threads themselves as they are tightened. While it uses self-tapping screws, it is not limited to them.

[0025] Next, the first connecting member 20 and the second connecting member 22 will be explained using Figures 4 to 6. In addition, if it is not necessary to distinguish between the first connecting member 20 and the second connecting member 22, Sometimes, it is simply abbreviated as "connecting component."

[0026] Figure 4 is a perspective view showing an example of joining the first connecting member 20 and the second connecting member 22. Figure 5 shows the branch member, which is one of the connecting members when the connecting members 20 and 22 are divided vertically. This is a perspective view showing 23A. Figure 6 shows the other side when connecting members 20 and 22 are divided vertically. This is a perspective view showing the mortar-shaped member 23B, which is a connecting member. Note the connecting part in Figures 4 and 5. The material is provided with holes 26 for joining to the heat receiving member 12, but this is omitted from the description.

[0027] The branching member 23A has a structure that branches the cooling medium. The mortar-shaped member 23B is the bottom The structure has a surface that slopes downward toward the outlet 18. First connecting member 20 The second connecting member 22 is manufactured by joining the branching member 23A and the mortar-shaped member 23B. The joining method involves connecting the joining surface of the branch member 23A and the joining surface of the mortar-shaped member 23B. A method of bonding by applying an adhesive, or the bonding surface of the branch member 23A and the mortar-shaped member 23B A method of joining the two members by applying double-sided tape between the joining surfaces, or the branch member 23A A fitting portion for vibration welding is provided on the joint surface and the joint surface of the mortar-shaped member 23B, and the two are joined by vibration welding. Methods such as the following can be mentioned.

[0028] The connecting members 20 and 22 are used at the point where they are connected to the heat receiving member 12. They have different forms. We will explain their usage and the flow of the cooling medium.

[0029] Figure 5 shows an example of an inflow path, in which the inlet 16 is formed and positioned on the upper part of the connecting member. Cooling medium flows in from the top and through branch members 23A formed inside connecting members 20 and 22 The flow then branches into three cooling medium flows, and each flow branches to the heat receiving member 12 and connects to the pipeline. This is the flow that flows into 14. In this embodiment, the cooling medium is 3, which is the number of heat receiving members 12. Although it is branched, the number of branches is not limited as it varies depending on the number of heat receiving members 12. stomach.

[0030] Another example of an inflow route is the cooling system that flows in from inlet 16, as shown in Figure 6. The medium flows through the branching member 23A into the conduit 14 and into the mortar-shaped member 23B. The cooling medium that flows into the mortar-shaped member 23B is divided by the mortar-shaped structure. The diameter of the flow path gradually decreases from the joint with the branch member 23A toward the outlet 18, Because its bottom surface has a slope that descends toward the outlet 18, the outlet 18 In the portion located below the connecting members 20 and 22, the cooling medium is positioned downwards due to gravity. It flows into outlet 18.

[0031] The configuration of this flow path will be described in detail later, but a closing member 25 is provided at the outlet 18 to block the flow path. Alternatively, a pipe 28 may be provided at the outlet 18 and connected to the inlet 16 of the other connecting members 20 and 22. It varies depending on the circumstances.

[0032] Figure 7 shows the first connecting member 20 and the second connecting member 20, which have holes 26 for joining to the heat receiving member 12. This is a perspective view showing the connecting member 22.

[0033] The joining hole 26 is provided in the cap portion that fits with the heat receiving member 12. The first connecting member 20 and the second connecting member 22, which are equipped with the length of the extruded porous tube of the heat receiving member 12 It is connected to the end in the lateral direction. As shown in Figure 2, the longitudinal end of the extruded porous tube is connected for joining. Multiple holes 32 for passing bolts are provided at positions corresponding to holes 26. Also, the extruded porous pipe As shown in Figure 3, multiple holes 34 for fixing self-tapping screws are also provided on the longitudinal end face. The bolts are inserted into the holes 26 in the cap portions of the connecting members 20 and 22 and the holes 32 in the extruded porous tube. By passing it through, the extruded porous tube and the cap portions of connecting members 20 and 22 are fastened. From the rear side of 20 and 22 (the left rear side in Figure 4), a self-tapping screw is passed through to form the extruded porous tube. By tightening the self-tapping screws into the drilled holes 34, the connecting members 20 and 22 and the extruded porous A pipe is something that is securely fastened together.

[0034] A gasket, sealant, etc., is attached between the end face of the extruded porous tube and the connecting members 20 and 22. Later, the extruded porous tube and the cap portion are fastened together. Alternatively, a flexible material with a water-leak-proof sealing function is used. Compressible elastomer resin is used in two-color molding to form the cross-section where the gasket and sealing material will be placed. It may be better to pre-molde it as a single, integrated piece.

[0035] Furthermore, as shown in Figure 7, the outlet 16 and inlet 18 are fitted with a closing member 25, which will be described later. A mounting portion 27 for attaching the piping 28 is provided.

[0036] Next, the method of connecting the pipes 28 will be explained with reference to Figures 8 and 9. Figure 8 shows the first This is a perspective view showing a configuration in which a pipe 28 is connected to the connecting member 20 and the second connecting member 22. Figure 9 is a perspective view showing an example in which a closing member 25 is provided at the outlet 18.

[0037] As shown in Figure 8, the pipe 28 connects the first connecting member 20 and the second connecting member 22. It is provided in. The piping 28 includes an elbow and a plug. The material of the elbow and plug is limited. No. A closing member is provided at the inlet 16 or outlet 18 on the side to which the piping 28 is not connected. It is restrained and fixed. Additionally, a fastener 24 is provided to secure the piping 28.

[0038] The closing member 25 is located at the inlet 16 or outlet of the first connecting member 20 and the second connecting member 22. It is selectively provided at 18. When it is necessary to introduce a cooling medium from the inlet 16, With the opening 16 open (without providing closing members 24 and 25 at the inlet 16), the cooling medium enters the inlet 16. Connect the piping that serves as the body's fluid pathway. Also, if there is no need for the cooling medium to flow out from outlet 18 Then, the outlet 18 is closed by the closing member 25. Furthermore, the cooling medium is introduced in the reverse direction. In such cases, the inlet 16 may be closed by closing members 24 and 25.

[0039] Thus, the inlet 16 and outlet 18 of the first connecting member 20 and the second connecting member 22 By selectively closing the opening with closing members 24 and 25, the flow in the pipe 14 within the heat receiving member 12 is controlled. The system allows for switching the flow. Either the inlet 16 or the outlet is closed. In some cases, both the inlet 16 and the outlet are not closed. For example, when flow in from the inlet 16... If the cooled medium is to flow to both the outlet 18 and the pipe 28, both the inlet 16 and the outlet 18 should be closed. do not.

[0040] As shown in Figure 9, the closing member 25 consists of a cap. The closing member 25 (cap) is It is attached to the component mounting part 27 shown in Figure 7. If you want to block the flow path of the cooling medium, It can be blocked with a cap. It is not limited to caps, as long as the flow path of the cooling medium can be blocked. It cannot be done. Furthermore, a fastener 24 is provided to secure the cap.

[0041] Furthermore, the part that is normally closed by the closing member 25 is opened during maintenance to allow the cooling medium to enter. It can be used to remove the coolant or to bleed air from the piping 28 after adding the cooling medium. Furthermore, if the cooling medium is circulated through the same flow path for a long period of time, it will come into contact with the heat receiving member 12 on the upstream side of the flow path. The battery pack 102 that is in contact with the heat receiving member 12 downstream of the flow path is Because it is in a high-temperature environment, degradation progresses and the degree of degradation is determined by the battery pack 102. There are concerns that it may be different. In such cases, the connection of the piping 28 and the closing member 25 should be checked regularly. By switching the connection point and changing the flow path of the cooling medium, some of the battery packs 102 It is also possible to prevent deterioration.

[0042] Next, the heat transport device 10 equipped with the battery pack 102 will be described with reference to Figures 10 and 11. Figure 10 is a plan view of an example in which six battery packs 102 are mounted on the top surface of the heat transport device 10. The battery pack 102 is equipped with multiple batteries connected in series and parallel to obtain the desired voltage and current. It is further enhanced and incorporates voltage and temperature monitoring and protection circuits.

[0043] As shown in Figure 10, six battery packs 102 are installed on the top surface of the heat transport device 10. The battery pack 102 is provided with holes for bolts at its four corners, and is fastened to the heat transport device 10 with bolts. They are connected. In Figure 10, six battery packs 102 are installed, but the number is not limited.

[0044] Between the upper surface of the heat receiving member 12 of the heat transport device 10 and the bottom surface of the battery pack 102, there is contact between them. To reduce thermal resistance, materials such as silicone are used to provide electrical insulation and thermal conductivity, and to fill in minute irregularities. A sheet of flexible material or a compound with similar functionality is applied to it.

[0045] Figure 11 is a perspective view of the energy storage device 100. The energy storage device 100 is a battery system Multiple battery packs 102 are arranged on the upper surface of the heat receiving member 12, which has a shelf function within the device, and heat receiving The configuration consists of stacking two or more sets of component 12 and battery pack 102 vertically.

[0046] In Figure 11, the set of heat receiving member 12 and battery pack 102 has 3 stages, but the number is not limited. i. The outlet and inlet of the cooling medium of the first connecting member 20 and the second connecting member 22 are arranged relative to each other. By connecting with pipe 28, a flow path for the cooling medium is formed.

[0047] The flow of the cooling medium will be explained with reference to Figures 12 and 13. Figure 12 shows the flow of the cooling medium in the heat transport device. This is a conceptual diagram illustrating the flow of the cooling medium. Figure 13(a) shows the flow of the cooling medium through the heat receiving member. This is a view of the front side of 12. Also, Figure 13(b) shows the flow of the cooling medium to the heat receiving member 12 This is a view from the back side.

[0048] As shown in Figure 12(a), cooling is performed from the lowest inlet 16 of one of the first connecting members 20. The medium flows in, and the cooling medium flows out to the connecting members 20 and 22 of the stage directly above, and the connections of each stage The heat flows into the connecting members, and the branching members 23A of the connecting members 20 and 22 connect to the heat receiving members 12 of each stage. It flows into the first stage. After passing through the heat receiving members 12 of each stage, it is merged at the second connecting member 22 and then flows out. It flows from the opening 18 through the piping 28 into the inlet 16 of the adjacent connecting member in the lateral direction. After that, the heat flows through each stage of the heat receiving member 12 and merges, and then cools down to the lowest stage of the other first connecting member 20. The waste media merge and flow out from outlet 18.

[0049] Figure 12(b) shows that the piping 28 is provided above the first connecting member 20 and the second connecting member 22. In one case, the pipe 28 is provided below the first connecting member 20 and the second connecting member 22. This indicates that whether it is placed on the top or bottom, the cooling medium will still flow out.

[0050] By flowing a cooling medium in and out of the heat receiving member 12 in parallel, the power inside each battery pack 102 of each stage is reduced. By smoothing out the temperature of the battery cells, it is possible to prevent the degradation of the battery cells.

[0051] Furthermore, by changing the connection point of the piping 28 and the mounting location of the closing member 25 as needed, It is also possible to modify the flow path of the cooling medium to equalize the degradation of the battery cells in each battery.

[0052] Although several embodiments of the present invention have been described, these embodiments are presented as examples only. Therefore, it is not intended to limit the scope of the invention. These novel embodiments are It can be implemented in various other forms, and without departing from the spirit of the invention, various Omissions, substitutions, and modifications are permitted. These embodiments and their variations fall within the scope of the invention. It is included in the abstract and also within the scope of the invention described in the claims and its equivalents. . [Explanation of Symbols]

[0053] 10...Heat transport device 12…Heat receiving component 14…Pipe line 16…Inlet 18... Outlet 20...First connecting member 22...Second connecting member 23A... Branching component 23B... Mortar-shaped member 24... Quick fasteners 25… Closing member (cap) 26… Holes for joining 27... Component mounting section 28... Piping 30...Escape Club 32…hole 34...Tapping holes 100... Energy storage device 102...Battery pack

Claims

1. A heat receiving member having a conduit formed inside for passing a fluid, A fluid inlet or An outlet is formed, and the fluid flowing in from the inlet is routed through the pipe of the heat receiving member or The first connecting member flows out to the outlet, The other end of the heat receiving member is provided with a fluid inlet or An outlet is formed, and the fluid that has flowed through the pipeline of the heat receiving member or that has flowed in from the inlet A second connecting member that allows the fluid to flow out to the outlet, Closure that selectively closes the outlet of the first connecting member and the inlet of the second connecting member. A mounting section for attaching the component, A heat transport device equipped with the following:

2. The second connecting member and the heat receiving member adjacent to the heat receiving member on which the second connecting member is provided. It further has piping that connects to a first connecting member provided therein, The fluid is configured to flow in parallel through the pipes of adjacent heat receiving members. The heat transport apparatus according to claim 1.

3. Adjacent heat receiving members are arranged side by side in the lateral direction by the aforementioned piping. The heat transport apparatus according to claim 2.

4. Connect the outlet of the first connecting member to the inlet of the first connecting member of the adjacent heat receiving member. It further has piping, The fluid is configured to flow in parallel through the pipes of adjacent heat receiving members. The heat transport apparatus according to claim 1.

5. Adjacent heat receiving members are arranged vertically side by side by the aforementioned piping. The heat transport apparatus according to claim 4.

6. The fluid consists of a cooling medium or a heating medium. The heat transport apparatus according to claim 1.

7. The heat receiving member is made of an extruded porous tube. The heat transport apparatus according to claim 1.

8. The bottom surfaces of the first connecting member and the second connecting member are located from the pipeline to the outlet. It has a configuration that has a downward slope toward The heat transport apparatus according to claim 1.

9. The first connecting member and the second connecting member are connecting members that branch the fluid, and the bottom surface is A connecting member having a downward slope toward the outlet, The heat transport apparatus according to claim 1.

10. A heat receiving member having a conduit formed inside for passing a fluid, A fluid inlet or An outlet is formed, and the fluid flowing in from the inlet is routed through the pipe of the heat receiving member or The first connecting member flows out to the outlet, The other end of the heat receiving member is provided with a fluid inlet or An outlet is formed, and the fluid that has flowed through the pipeline of the heat receiving member or that has flowed in from the inlet A second connecting member that allows the fluid to flow out to the outlet, Closing section that selectively closes the inlet and outlet of the first and second connecting members. Materials and, A heat transport device equipped with, A battery pack is placed on the upper surface of the heat receiving member of the heat transport device, A power storage device having the following features.

Citation Information

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