Cooling component for storage batteries, storage battery device, and method for manufacturing the same.

Abstract

The present invention provides a cooling member, a battery device, and a method for manufacturing the same, which can achieve both improved responsiveness to the expansion or contraction of a battery and improved cooling effect. [Solution] The cooling member 1 for the storage battery is provided between adjacent storage batteries 70 in a stack of storage batteries 70, and includes a resin housing 10 and a cover. The resin housing 10 includes a resin substrate 20, a rib-shaped flow path forming portion 30 provided on at least one main surface 21 of the substrate 20 to form a refrigerant flow path 300 for circulating refrigerant, and a refrigerant inlet portion 40 and a refrigerant outlet portion 50 that penetrate the substrate 20 and communicate with the refrigerant flow path 300. The cover covers the side of the resin housing 10 where the flow path forming portion 30 is provided, and is laminated on the resin housing 10 so as to abut the flow path forming portion 30 and close the refrigerant flow path 300. The flow path forming portion 30 includes an elastic portion made of an elastic material including rubber or elastomer.

Description

Technical Field

[0001] The present invention relates to a cooling member for a storage battery, a storage battery device, and manufacturing methods thereof.

Background Art

[0002] Conventionally, in a storage battery device having stacked storage batteries, a cooling member is provided between adjacent storage batteries to cool each storage battery. For example, Patent Document 1 discloses a configuration in which a cooling member made of a hollow body of aluminum is disposed between stacked storage batteries, and a refrigerant is circulated through the hollow body to cool the ventral surface of the storage battery. Further, Patent Document 2 discloses a configuration in which a cooling effect is enhanced by providing a metal fin for forming a flow path in a hollow body made of aluminum disposed between stacked storage batteries.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, although a storage battery expands and contracts during use, in the configurations disclosed in Patent Document 1 and Patent Document 2, even if the storage battery expands or contracts, the cooling member cannot deform following this, so there is a risk that the cooling member will be damaged or a gap will form between the storage battery and the cooling member, and there is room for improvement.

[0005] If the cooling member is brought into contact with the side surface of the stacked batteries instead of the configuration disclosed in Patent Documents 1 and 2, the cooling member does not need to follow the expansion or contraction of the batteries. However, in this case, the contact area between the batteries and the cooling member becomes small, making it difficult to obtain a sufficient cooling effect.

[0006] This invention has been made in view of the above problems, and aims to provide a cooling member, a battery device, and a method for manufacturing the same that can achieve both improved responsiveness to the expansion or contraction of a storage battery and improved cooling effect. [Means for solving the problem]

[0007] One aspect of the present invention is, A cooling member for batteries, provided between adjacent batteries in a stacked array of batteries, Including a resin housing and a lid, The aforementioned resin housing is A resin substrate and A rib-shaped channel forming portion is provided on at least one main surface of the substrate and forms a refrigerant channel through which the refrigerant flows, A refrigerant inlet portion that penetrates the substrate and communicates with the refrigerant flow path, allowing the refrigerant to flow into the refrigerant flow path, The substrate has a refrigerant outlet that penetrates the substrate and communicates with the refrigerant flow path, causing the refrigerant to flow out of the refrigerant flow path, The cover is made of a plate-shaped member laminated on the resin housing so as to cover the side of the resin housing where the flow path forming portion is provided and to abut the flow path forming portion and close the refrigerant flow path. The aforementioned flow channel forming portion is located in a cooling member for a storage battery, and includes an elastic portion formed of an elastic material including rubber or elastomer.

[0008] Other aspects of the present invention include: A battery storage device comprising a cooling member for the battery and a plurality of stacked battery units, The cooling member is located in the battery device and is in contact with the front surface of the battery.

[0009] Further aspects of the present invention include: A method for manufacturing a cooling member for a storage battery, A step of forming a refrigerant inlet and outlet portion on the substrate, A step of forming a channel forming portion on the substrate, The process includes a lid lamination step of laminating the lid onto the resin housing such that the lid covers the side of the resin housing where the flow path forming portion is provided and is in contact with the flow path forming portion to block the refrigerant flow path, A method for manufacturing a cooling member for a storage battery, wherein in the step of forming the flow channel forming portion, at least a part of the flow channel forming portion is formed with the elastic portion.

[0010] Further aspects of the present invention include: A method for manufacturing a battery storage device, A battery stacking step in which the cooling member is placed between adjacent batteries and the batteries are stacked with the cooling member in contact with the front surface of the batteries, The present invention relates to a method for manufacturing a battery device, which includes a fixing step of pressing and fixing the battery and the cooling member in the stacking direction. [Effects of the Invention]

[0011] According to one embodiment of the present invention, a cooling member for a storage battery includes an elastic portion made of an elastic material in the flow path forming portion, so that the flow path forming portion is configured to be elastically deformable. As a result, when the cooling member is installed between adjacent storage batteries in a plurality of stacked storage batteries, the flow path forming portion can be elastically deformed in response to the expansion and contraction of the storage batteries, thereby improving its ability to follow the expansion and contraction of the storage batteries. Furthermore, by bringing a plate-shaped cover that closes the refrigerant flow path into contact with the underside of the storage battery as a cooling surface, the cooling effect of the storage battery can be improved. In addition, since the cooling member is formed by assembling a cover to a resin housing, it is easy to assemble.

[0012] According to the battery device of another aspect of the present invention, since the cooling member is in contact with the ventral surface of the battery, the battery can be deformed following expansion or contraction, and a high cooling effect can be achieved for the battery.

[0013] According to the method for manufacturing a cooling member for a battery of still another aspect of the present invention, since the flow path forming portion can be elastically deformed according to the expansion and contraction of the battery, the followability with respect to the expansion and contraction of the battery can be improved. Further, by bringing the plate-like lid body that closes the refrigerant flow path into contact with the ventral surface of the battery as a cooling surface, the cooling effect of the battery can be improved. Further, since the cooling member is formed by assembling the lid body to the resin housing, the assembly is easy.

[0014] According to the method for manufacturing a battery device of still another aspect of the present invention, since the cooling member having an elastically deformable flow path forming portion is disposed between adjacent batteries and pressed in the stacking direction, the flow path forming portion elastically deforms following the expansion and contraction of the battery, so that the followability with respect to the expansion and contraction of the battery can be improved. Further, by bringing the plate-like lid body that closes the refrigerant flow path into contact with the ventral surface of the battery as a cooling surface, the cooling effect of the battery can be improved.

Brief Description of the Drawings

[0015] [Figure 1] Perspective view of the battery device including the cooling member in Embodiment 1. [Figure 2] Top perspective view of the cooling member 1 in Embodiment 1. [Figure 3] Top perspective view of the cooling member with the first lid removed in Embodiment 1. [Figure 4] Bottom perspective view of the cooling member 1 in Embodiment 1. [Figure 5] Bottom perspective view of the cooling member with the second lid removed in Embodiment 1. [Figure 6] Top view of the cooling member with the first lid removed in Embodiment 1. [Figure 7] Bottom view of the cooling member with the second lid removed in Embodiment 1. [Figure 8] A partially enlarged perspective view of the cross-section near the edge of the substrate at the position VIII-VIII in Figure 6, as indicated by the arrow. [Figure 9] A partially enlarged perspective view of the cross-section near the center of the substrate at the position of line VIII-VIII in Figure 6. [Figure 10] Cross-sectional view taken along the arrow at the position indicated by line XX in Figure 6, near the refrigerant inlet. [Figure 11] A cross-sectional perspective view taken along the arrow at the position of line XI-XI in Figure 6. [Figure 12] A cross-sectional view taken along the line XII-XII in Figure 6, with no cooling components installed between the batteries. [Figure 13] A cross-sectional view taken along the line XII-XII in Figure 6, with the cooling component installed between the batteries. [Figure 14] Side view of the battery storage device in Embodiment 1. [Figure 15] A flowchart illustrating the manufacturing method of the cooling member in Embodiment 1. [Figure 16] A flowchart illustrating the manufacturing method of the battery storage device in Embodiment 1. [Figure 17] A perspective view of the cooling member from below in Embodiment 2. [Figure 18] A cross-sectional view of the cooling member in Embodiment 2, taken along the line XII-XII in Figure 6. [Modes for carrying out the invention]

[0016] (Embodiment 1) 1. Cooling component for storage battery 1 As shown in Figure 1, the cooling member 1 for the storage battery in this embodiment 1 is installed between adjacent storage batteries 70 in a plurality of storage batteries 70. The cooling member 1 is configured to allow a refrigerant to circulate inside and cools the adjacent storage batteries 70. As shown in Figure 2, the cooling member 1 includes a resin housing 10 and a lid 60. Figure 2 also shows one of the storage batteries 70 adjacent to the cooling member 1. The components of the cooling member 1 will be described in detail below.

[0017] 2. Resin housing 10 As shown in Figure 3, the resin housing 10 includes a substrate 20, a flow path forming section 30, a refrigerant inlet section 40, and a refrigerant outlet section 50.

[0018] 3. Circuit board 20 As shown in Figure 3, the substrate 20 is a plate-shaped member made of resin, and as shown in Figures 6 and 7, it has a substantially rectangular shape in plan view. The material of the substrate 20 is not limited as long as it is made of resin.

[0019] 4. Flow channel forming section 30 The flow path forming portion 30 is formed in a rib shape on at least one main surface of the substrate 20 and forms a refrigerant flow path 300 for circulating the refrigerant. In this embodiment, as shown in Figures 3 and 6, it includes a first flow path forming portion 31 formed on the first main surface 21 of the substrate 20, and as shown in Figures 5 and 7, it includes a second flow path forming portion 32 formed on the second main surface 22 of the substrate 20. The first flow path forming portion 31 forms a first refrigerant flow path 301, and the second flow path forming portion 32 forms a second refrigerant flow path 302.

[0020] As shown in Figures 3 and 6, the first flow path forming section 31 includes a first outer peripheral rib 311 that forms the outer periphery of the first refrigerant flow path 301, and a first inner rib 312 located inside the first outer peripheral rib 311. The first outer peripheral rib 311 is formed generally along the outer edge of the main surface 21 of the substrate 20. The first inner rib 312 has multiple U-shapes and causes the refrigerant flowing in from the refrigerant inlet section 40 (described later) to flow in a U-shape on the first main surface 21 of the substrate 20 toward the refrigerant outlet section 50 (described later).

[0021] As shown in Figures 5 and 7, the second flow path forming section 32, like the first flow path forming section 31, includes a second outer peripheral rib 321 that forms the outer periphery of the second refrigerant flow path 302, and a second inner rib 322 located inside the second outer peripheral rib 321. The second outer peripheral rib 321 is formed generally along the outer edge of the main surface 22 of the substrate 20. The second inner rib 322 is made up of multiple U-shapes and causes the refrigerant flowing in from the inflow-side flow path communication section 351 (described later) to flow in a U-shape on the second main surface 22 of the substrate 20 toward the outflow-side flow path communication section 352 (described later).

[0022] As shown in Figures 8 to 13, the flow channel forming section 30 includes an elastic section 33 made of an elastic material including rubber or elastomer. In this embodiment, as shown in Figure 13, the elastic section 33 is formed in a position that contacts the cover 60 of the flow channel forming section 30 when the cooling member 1 is located between the storage batteries 70 and stacked together with the storage batteries 70. The elastic section 33 is divided into two parts: the first elastic section is included in the first flow channel forming section 31, and the second elastic section is included in the second flow channel forming section 32.

[0023] As shown in Figures 8 and 9, in the first channel forming section 31, the first outer peripheral rib 311 consists of a first outer peripheral elastic section 331, which is an elastic section 33 that covers a groove 23 recessed in the first main surface 21 of the substrate 20, and the first inner rib 312 consists of a resin projection 24 protruding from the first main surface 21 of the substrate 20 and a first inner elastic section 332, which is an elastic section 33 that covers the projection 24. Similarly, in the second channel forming section 32, the second outer peripheral rib 321 consists of a second outer peripheral elastic section 333, which is an elastic section 33 that covers a groove 23 recessed in the second main surface 22 of the substrate 20, and the second inner rib 322 consists of a resin projection 24 protruding from the second main surface 22 of the substrate 20 and a second inner elastic section 334, which is an elastic section 33 that covers the projection 24.

[0024] The outer elastic portion (first outer elastic portion 331, second outer elastic portion 333) and the inner elastic portion (first inner elastic portion 332, second inner elastic portion 334) may be formed from the same material or from different materials, but in this embodiment they are formed from the same material.

[0025] 5. Elastic connecting part 34 As shown in Figures 9 and 10, the resin housing 10 is made of an elastic material and includes an elastic connecting portion 34 that penetrates the substrate 20. In this embodiment, as shown in Figure 9, the elastic connecting portion 34 includes a first elastic connecting portion 341 that connects a first inner elastic portion 332 included in the first inner rib 312 and a second inner elastic portion 334 included in the second inner rib 322. In this embodiment, as shown in Figure 6, the first elastic connecting portion 341 is provided in the first refrigerant flow path 301 at a location near the flow path communication portion 35 (described later), at a location in the U-shaped curved portion, and at a location intermediate between the two. Furthermore, as shown in Figure 6, the first elastic connecting portion 341 is located inside the first outer peripheral rib 311 on the first main surface 21 of the substrate 20, and as shown in Figure 7, it is located inside the second outer peripheral rib 321 on the second main surface 22 of the substrate 20.

[0026] Furthermore, as shown in Figure 10, the elastic connecting portion 34 includes a second elastic connecting portion 342 that connects the first inner elastic portion 332 included in the first inner rib 312 and the second outer elastic portion 333 included in the second outer rib 321. As shown in Figures 6 and 7, the second elastic connecting portion 342 is located between the flow channel communication portion 35 and the refrigerant inlet portion 40 and refrigerant outlet portion 50, which will be described later. The second elastic connecting portion 342 is located inside the first outer rib 311 on the first main surface 21 of the substrate 20, as shown in Figure 6, and inside the second outer rib 321 on the second main surface 22 of the substrate 20, as shown in Figure 7.

[0027] 6. Refrigerant inlet 40, refrigerant outlet 50 As shown in Figures 6 and 7, the refrigerant inlet 40 penetrates the substrate 20 and communicates with the refrigerant flow path 300, allowing refrigerant to flow into the refrigerant flow path 300. The refrigerant outlet 50 also penetrates the substrate 20 and communicates with the refrigerant flow path 300, allowing refrigerant to flow out of the refrigerant flow path 300. In this embodiment, the refrigerant inlet 40 and the refrigerant outlet 50 are provided in a region near one side of the substrate 20.

[0028] In this embodiment, as shown in Figure 4, a refrigerant supply unit 41, consisting of a first cylindrical member erected on the second main surface 22 of the substrate 20, is connected to the refrigerant inlet 40, and the refrigerant supply unit 41 supplies refrigerant to flow into the refrigerant inlet 40. In addition, a refrigerant discharge unit 51, consisting of a second cylindrical member erected on the second main surface 22 of the substrate 20, is connected to the refrigerant outlet 50, and the refrigerant discharge unit 51 discharges the refrigerant flowing out of the refrigerant outlet 50.

[0029] As shown in Figure 1, the refrigerant supply unit 41 is configured to contact adjacent cooling members 1 when the cooling members 1 are placed between a plurality of stacked storage batteries 70, and to communicate with the refrigerant supply unit 41 of the adjacent cooling members 1. The portion of the refrigerant supply unit 41 that contacts adjacent cooling members 1 is formed by a first seal portion 42 made of the sealing material shown in Figure 4.

[0030] Furthermore, the refrigerant discharge section 51 is configured to contact adjacent cooling members 1 when the cooling members 1 are placed between a plurality of stacked storage batteries 70 as shown in Figure 1, and to communicate with the refrigerant discharge section 51 of the adjacent cooling member 1. The portion of the refrigerant discharge section 51 that contacts the adjacent cooling member 1 is formed by a second seal section 52 made of the sealing material shown in Figure 4.

[0031] As shown in Figure 11, the resin housing 10 includes a first seal portion connecting portion 43 that penetrates the substrate 20 and connects the first seal portion 42 and the first outer peripheral elastic portion 331 included in the first flow path forming portion 31. The resin housing 10 also includes a second seal portion connecting portion 53 that penetrates the substrate 20 and connects the second seal portion 52 and the first outer peripheral elastic portion 331 included in the first flow path forming portion 31. The first seal portion connecting portion 43 is located outside the first seal portion 42, and the second seal portion connecting portion 53 is located outside the second seal portion 52. When multiple cooling members 1 and multiple storage batteries 70 are stacked alternately, the refrigerant supply portion 41 and the refrigerant discharge portion 51 are configured to contact the lid 60 of adjacent cooling members 1 at the first seal portion connecting portion 43 and the second seal portion connecting portion 53.

[0032] Furthermore, when the cooling members 1 and the storage battery 70 are arranged alternately and pressed in the stacking direction, the first seal portion 42 and the second seal portion 52 come into contact with the first lid 61 of the adjacent cooling member 1. As shown in Figure 6, the flow path forming portion 30 has a supply-side lid support portion 37 that comes into contact with the opposite side of the portion of the first lid 61 of the adjacent cooling member 1 that the first seal portion 42 comes into contact with, and a discharge-side lid support portion 38 that comes into contact with the opposite side of the portion of the second seal portion 52 comes into contact with. The supply-side lid support portion 37 and the discharge-side lid support portion 38 support the first lid 61 against the pressing force from the first seal portion 42 and the second seal portion 52.

[0033] In this embodiment 1, the supply-side cover support portion 37 is located between the refrigerant inlet portion 40 and the inlet-side flow path communication portion 351, and also functions as a first inner rib 312 that forms the first refrigerant flow path 301. The discharge-side cover support portion 38 is located between the refrigerant outlet portion 50 and the outlet-side flow path communication portion 352, and also functions as a second inner rib 322 that forms the second refrigerant flow path 302.

[0034] 7. Flow channel connecting section 35 As shown in Figures 6 and 7, the resin housing 10 has a flow path communication section 35 that penetrates the substrate 20 and connects the first refrigerant flow path 301 and the second refrigerant flow path 302. The flow path communication section 35 includes an inlet-side flow path communication section 351 located near the refrigerant inlet section 40 and an outlet-side flow path communication section 352.

[0035] As indicated by the symbol F1 in Figure 6, the refrigerant supplied from the refrigerant supply unit 41 flows into the first refrigerant flow path 301 via the refrigerant inlet 40, and as indicated by the symbol F2, flows from the first refrigerant flow path 301 through the inlet-side flow path communication unit 351 into the second refrigerant flow path 302 shown in Figure 7. Subsequently, the refrigerant flows through the second refrigerant flow path 302 and flows out from the second refrigerant flow path 302 to the first refrigerant flow path 301 shown in Figure 6 via the outlet-side flow path communication unit 352, and also flows out from the first refrigerant flow path 301 to the refrigerant discharge unit 51 via the refrigerant outlet 50 and is discharged from the refrigerant discharge unit 51.

[0036] 8.Flow rate adjustment part 36 As shown in Figure 6, the first flow path forming section 31 has a flow rate adjustment section 36 that adjusts the flow rate of refrigerant that flows into the inlet-side flow path communication section 351 and circulates through the second refrigerant flow path, and the flow rate of refrigerant that circulates through the first refrigerant flow path 301 without flowing into the inlet-side flow path communication section 351, from the refrigerant that flows into the first refrigerant flow path 301 from the refrigerant inlet section 40. The flow rate adjustment section 36 is configured to narrow the flow path width of the first refrigerant flow path 301 relative to the inlet-side flow path communication section 351.

[0037] 9. Lid 60 As shown in Figures 2 and 4, the lid 60 is a plate-shaped member and is provided to cover the side of the resin housing 10 where the flow channel forming section 30 is provided. The material of the lid 60 is not limited, but one with high thermal conductivity is preferred, for example, it can be made of metal, and in this embodiment it is made of SUS. The thickness of the lid 60 is preferably as thin as possible while ensuring strength. In this embodiment, the lid 60 includes a first lid 61 that covers the side of the resin housing 10 where the first flow channel forming section 31 is provided, and a second lid 62 that covers the side where the second flow channel forming section 32 is provided.

[0038] The lid 60 is engaged with the resin housing 10 by the engaging portion 55. In this embodiment, as shown in Figure 2, the first lid 61 is engaged with the resin housing 10 by three first engaging portions 551 provided on the first main surface 21 of the substrate 20. The second lid 62 is engaged with the resin housing 10 by three second engaging portions 552 provided on the second main surface 22 of the substrate 20, as shown in Figure 4. As shown in Figure 2, the first lid 61 has a supply-side lid through-hole 63 formed along the refrigerant inlet 40 at a position overlapping with the refrigerant inlet 40, and a discharge-side lid through-hole 64 formed along the refrigerant outlet 50 at a position overlapping with the refrigerant outlet 50.

[0039] In this embodiment, as shown in Figure 12, when the cooling member 1 is not positioned between the storage batteries 70, the first cover 61 engaged by the first engaging portion 551 is in contact with the first outer peripheral rib 311 but not with the first inner rib 312. Similarly, the second cover 62 engaged by the second engaging portion 552 is in contact with the second outer peripheral rib 321 but not with the second inner rib 322.

[0040] On the other hand, as shown in Figure 13, when the cooling member 1 is positioned between the batteries 70, the first outer rib 311 is pressed and compressed by the first cover 61, causing the first cover 61 to contact the first outer rib 311 and the first inner rib 312. Similarly, the second outer rib 321 is pressed and compressed by the second cover 62, causing it to contact the second outer rib 321 and the second inner rib 322. As a result, the first refrigerant flow path 301 and the second refrigerant flow path 302 are established as U-shaped flow paths. Furthermore, when the cooling member 1 is positioned between the batteries 70, the first cover 61 and the second cover 62 are pressed and fixed by the batteries 70, so the engagement by the engaging portion 55 is not substantially exerted. Therefore, the engagement by the engaging portion 55 functions as temporary fixing until the cooling member 1 is positioned between the batteries 70 and pressed.

[0041] 10. Battery storage device 100 As shown in Figure 1, the battery device 100 in this embodiment includes a plurality of cooling members 1 and a plurality of batteries 70. The cooling members 1 and batteries 70 are stacked alternately, with the cooling members 1 positioned between the batteries 70 and pressed in the stacking direction. The alternately stacked plurality of cooling members 1 and batteries 70 are fixed in position by inserting a rod-shaped member 57 into a cylindrical fixing portion 56 provided on the resin housing 10 of the cooling member 1, as shown in Figures 1 and 14. Both ends of the rod-shaped member 57 are screwed with nuts.

[0042] As shown in Figure 14, the battery 70 is flat and has a pair of main surfaces, the front surfaces 71 and 72. The type of battery 70 is not limited, but in this embodiment it is a lithium-ion battery. The cooling member 1 is in contact with the front surface 71 of one of the adjacent batteries 70 at the first cover 61, and with the front surface 72 of the other battery 70 at the second cover 62.

[0043] As shown in Figure 1, in the battery storage device 100, the refrigerant supply sections 41 of adjacent cooling members 1 are in communication with each other, and the refrigerant discharge sections 51 of adjacent cooling members 1 are also in communication with each other. As a result, when refrigerant is supplied from the outside to the refrigerant supply section 41 provided on the cooling member 1 at one end, as indicated by the symbol P1, the refrigerant supplied from the refrigerant supply section 41 flows into each cooling member 1, and the refrigerant that flows out from each cooling member 1 is collected at the refrigerant discharge section 51 and discharged to the outside from the refrigerant discharge section 51 provided on the cooling member 1 at one end, as indicated by the symbol P2.

[0044] 11. Manufacturing method of cooling member 1 for storage battery The manufacturing method for the cooling member 1 for storage batteries includes a refrigerant inlet / outlet formation step S1, a flow path formation step S2, and a cover stacking step S3, as shown in Figure 15. Each step will be described in detail below.

[0045] 11-1. Refrigerant inflow and outflow section formation process S1 In the refrigerant inlet / outlet formation step S1, a refrigerant inlet 40 and a refrigerant outlet 50 are formed on the substrate 20. The refrigerant inlet 40 and the refrigerant outlet 50 are formed near one side of the substrate 20, penetrating the substrate 20 (see Figure 3). In this embodiment, along with the formation of the refrigerant inlet 40 and the refrigerant outlet 50, a refrigerant supply section 41, a refrigerant discharge section 51, an engagement section 55, and a fixing section 56 are also formed on the substrate 20.

[0046] 11-2. Channel forming part forming process S2 In the channel formation step S2, a channel formation portion 30 is formed on the substrate 20. At least a part of the channel formation portion 30 is formed of an elastic portion 33. In this embodiment, in the channel formation step S2, first, the groove portion 23 and the protrusion portion 24 described above are formed on the first main surface 21 and the second main surface 22 of the substrate 20, respectively, and through holes constituting the elastic connecting portion 34 and through holes constituting the first seal portion connecting portion 43 and the second seal portion connecting portion 53 are formed.

[0047] Then, the substrate 20 is set in a mold for injection molding the elastic portion 33 onto the substrate 20. Subsequently, by supplying elastic material to the first main surface 21 of the substrate 20, the first outer peripheral elastic portion 331 is formed on the groove portion 23 provided on the first main surface 21, and the first inner elastic portion 332 is formed on the protrusion portion 24 to form the first flow channel forming portion 31. At the same time, by supplying a portion of the elastic material supplied to the first main surface 21 of the substrate 20 to the second main surface 22 of the substrate 20 via the elastic connecting portion 34, the second outer peripheral elastic portion 333 is formed on the groove portion 23 provided on the second main surface 22, and the second inner elastic portion 334 is formed on the protrusion portion 24 to form the second flow channel forming portion 32.

[0048] Furthermore, in the flow path formation step S2, along with the formation of the first flow path formation section 31 and the second flow path formation section 32, a portion of the elastic material supplied to the first main surface 21 of the substrate 20 is supplied to the ends of the refrigerant supply section 41 and the refrigerant discharge section 51 via the first seal section connecting section 43 and the second seal section connecting section 53 to form the first seal section 42 and the second seal section 52.

[0049] 11-3. Cover stacking process S3 Next, in the lid lamination step S3, the lid 60 is laminated onto the resin housing 10 so as to cover the side of the resin housing 10 where the flow path forming section 30 is provided and to contact the flow path forming section 30 to close the refrigerant flow path 300. In this embodiment, a first lid 61 and a second lid 62 are used as the lid 60. The first lid 61 is engaged with the substrate 20 via a first engaging section 551 formed on the first main surface 21 of the substrate 20, and is laminated onto the resin housing 10 so as to cover the side of the resin housing 10 where the first flow path forming section 31 is formed and to contact the first flow path forming section 31 to form the first refrigerant flow path 301. The second lid 62 is engaged with the substrate 20 via a second engaging section 552 formed on the second main surface 22 of the substrate 20, and is laminated onto the resin housing 10 so as to cover the side of the resin housing 10 where the second flow path forming section 32 is formed and to contact the second flow path forming section 32 to form the second refrigerant flow path 302. This allows for the manufacture of a cooling component 1 for a storage battery.

[0050] 12. Manufacturing method of the battery storage device 100 The manufacturing method of the battery device 100 includes a battery stacking step S11 and a fixing step S12, as shown in Figure 16. In the battery stacking step S11, as shown in Figures 1 and 14, a cooling member 1 is placed between adjacent batteries 70, and the batteries 70 are stacked with the cooling member 1 in contact with the front surface of the batteries 70. In the fixing step S12, the batteries 70 and the cooling member 1 are pressed and fixed in the stacking direction. In this embodiment, in the fixing step S12, adjacent cooling members 1 are positioned relative to each other by inserting a rod-shaped member 57 into the fixing part 56, and then pressed and fixed in the stacking direction.

[0051] 13. Effects of Cooling Component 1 for Storage Battery In the cooling member 1 for a storage battery of this embodiment 1, the flow path forming portion 30 includes an elastic portion 33 made of an elastic material, so the flow path forming portion 30 is configured to be elastically deformable. As a result, when the cooling member 1 is installed between adjacent storage batteries 70 in a plurality of stacked storage batteries 70, the flow path forming portion 30 can be elastically deformed in response to the expansion and contraction of the storage batteries 70, thereby improving its ability to follow the expansion and contraction of the storage batteries 70. Furthermore, by bringing the plate-shaped lid 60 that closes the refrigerant flow path 300 into contact with the front surfaces 71 and 72 of the storage batteries 70 as a cooling surface, the cooling effect of the storage batteries 70 can be improved. In addition, since the cooling member 1 is formed by assembling the lid 60 to the resin housing 10, it is easy to assemble.

[0052] Furthermore, in this embodiment 1, the elastic portion 33 is formed at a position in the flow path forming portion 30 that abuts against the cover 60. As a result, the portion of the flow path forming portion 30 that abuts against the cover 60 is elastically deformable by the elastic portion 33, improving the adhesion between the flow path forming portion 30 and the cover 60 and preventing refrigerant leakage.

[0053] Furthermore, in this embodiment 1, the flow path forming section 30 includes a first flow path forming section 31 provided on the first main surface 21 of the substrate 20 and forming a first refrigerant flow path 301 for circulating refrigerant, and a second flow path forming section 32 provided on the second main surface 22 located on the opposite side of the first main surface 21 and forming a second refrigerant flow path 302 for circulating refrigerant. The cover 60 includes a first cover 61 that covers the side of the resin housing 10 where the first flow path forming section 31 is provided and abuts against the first flow path forming section 31, and a second cover 62 that covers the side of the resin housing 10 where the second flow path forming section 32 is provided and abuts against the second flow path forming section 32. As a result, the storage battery 70 can be cooled on both sides of the cooling member 1, and the cooling effect of the storage battery 70 can be improved.

[0054] Furthermore, in this embodiment 1, the resin housing 10 includes an elastic connecting portion 34 made of an elastic material that penetrates the substrate 20 and connects the first elastic portion (first inner elastic portion 332), which is an elastic portion 33 included in the first channel forming portion 31, and the second elastic portion (second inner elastic portion 334), which is an elastic portion 33 included in the second channel forming portion 32. This allows the elastic portion 33 to be fixed to the substrate 20 without using adhesives or the like to bond the elastic portion 33 to the substrate 20, and prevents the elastic portion 33 from peeling off the substrate 20. In addition, when forming the elastic portion 33 by casting, the first channel forming portion 31 and the second channel forming portion 32 can be formed simultaneously via the elastic connecting portion 34.

[0055] Furthermore, in this embodiment 1, the elastic connecting portion 34 connects not the entirety of the first elastic portion 33 included in the first channel forming portion 31 (the first inner elastic portion 332), but a part thereof (the second inner elastic portion 334), and not the entirety of the second elastic portion 33 included in the second channel forming portion 32. This prevents the elastic portion 33 from peeling off the substrate while reducing the amount of elastic material used.

[0056] Furthermore, in this embodiment 1, the first flow path forming section 31 includes a first outer peripheral rib 311 that forms the outer periphery of the first refrigerant flow path 301, and a first inner rib 312 located inside the first outer peripheral rib 311. The second flow path forming section 32 includes a second outer peripheral rib 321 that forms the outer periphery of the second refrigerant flow path 302, and a second inner rib 322 located inside the second outer peripheral rib 321. The elastic connecting section 34 includes a first elastic connecting section 341 that connects a first inner elastic portion 332 included in the first inner rib 312 and a second inner elastic portion 334 included in the second inner rib 322, and a second elastic connecting section 342 that connects a first inner elastic portion 332 included in the first inner rib 312 and a second outer peripheral elastic portion 333, which is a second elastic portion included in the second outer peripheral rib 321. Furthermore, the first elastic connecting portion 341 connects the first inner elastic portion 332 and the second inner elastic portion 334, thereby preventing the first inner elastic portion 332 and the second inner elastic portion 334 from peeling off from the substrate 20. In addition, the second elastic connecting portion 342 connects the supply-side lid support portion 37 and the discharge-side lid support portion 38, which are part of the first inner elastic portion 332, to the second outer peripheral elastic portion 333, thereby preventing the supply-side lid support portion 37 and the discharge-side lid support portion 38 from peeling off from the substrate 20.

[0057] Furthermore, in this embodiment 1, the first elastic connecting portion 341 and the second elastic connecting portion 342 are located inside the first outer peripheral rib 311 and the second outer peripheral rib 321. This allows the first elastic connecting portion 341 and the second elastic connecting portion 342 to be located outside the first outer peripheral rib 311 and the second outer peripheral rib 321. Therefore, even if refrigerant leaks from the first elastic connecting portion 341 and the second elastic connecting portion 342, leakage from the first outer peripheral rib 311 and the second outer peripheral rib 321 can be suppressed.

[0058] Furthermore, in this embodiment 1, the flow path forming section 30 includes outer peripheral ribs 311 and 321 that form the outer periphery of the refrigerant flow path 300, and inner ribs 312 and 322 located inside the outer peripheral ribs 311 and 321. The outer peripheral ribs 311 and 321 consist of outer peripheral elastic sections 331 and 333 that cover the recessed grooves 23 in the substrate 20, and the inner ribs 312 and 322 consist of a resin projection 24 protruding from the substrate 20 and an inner elastic section 332 and 334 that covers the projection 24. As a result, the outer peripheral elastic sections 331 and 333 have a sufficient amount of elastic deformation, which improves the sealing performance by the outer peripheral ribs. In addition, the reaction force of the inner elastic sections 332 and 334 is increased, which prevents the inner ribs 312 and 322 from collapsing.

[0059] Furthermore, in this embodiment 1, the outer elastic parts 331 and 333 and the inner elastic parts 332 and 334 are formed from the same material. This makes it possible to reduce the number of different materials used while simultaneously improving the sealing performance of the outer ribs 311 and 321 and preventing the inner ribs 312 and 322 from collapsing.

[0060] Furthermore, in this embodiment 1, the resin housing 10 penetrates the substrate 20 and has a flow path communication section 35 that connects the first refrigerant flow path 301 and the second refrigerant flow path 302. This simplifies the supply path of refrigerant to the first refrigerant flow path 301 and the second refrigerant flow path 302.

[0061] Furthermore, in this embodiment 1, the resin housing 10 consists of a first cylindrical member erected on the second main surface 22 of the substrate 20 and connected to the refrigerant inlet 40, and includes a refrigerant supply unit 41 that supplies refrigerant flowing into the refrigerant inlet 40, and a second cylindrical member erected on the second main surface 22 of the substrate 20 and connected to the refrigerant outlet 50, and includes a refrigerant discharge unit 51 that discharges refrigerant flowing out from the refrigerant outlet 50.The resin housing 10 is configured such that the refrigerant supplied from the refrigerant supply unit 41 flows into the first refrigerant flow path 301 via the refrigerant inlet 40, flows from the first refrigerant flow path 301 to the second refrigerant flow path 302 via the inlet-side flow path communication unit 351, flows out from the second refrigerant flow path 302 to the first refrigerant flow path 301 via the outlet-side flow path communication unit 352, flows out from the first refrigerant flow path 301 to the refrigerant discharge unit 51 via the refrigerant outlet unit 50, and is discharged from the refrigerant discharge unit 51.

[0062] As a result, by configuring the refrigerant supply unit 41 to supply refrigerant to the first refrigerant flow path 301 and the refrigerant discharge unit 51 to discharge refrigerant from the first refrigerant flow path 301, refrigerant can be supplied to both the first refrigerant flow path 301 and the second refrigerant flow path 302, thus simplifying the refrigerant supply unit 41 and the refrigerant discharge unit 51.

[0063] Furthermore, in this embodiment 1, the first flow path forming section 31 has a flow rate adjustment section 36 that adjusts the flow rate of refrigerant that flows into the flow path communication section 35 and circulates through the second refrigerant flow path 302 from the refrigerant inlet section 40 to the first refrigerant flow path 301, and the flow rate of refrigerant that does not flow into the flow path communication section 35 but circulates through the first refrigerant flow path 301. By adjusting the flow rates of refrigerant flowing into the first refrigerant flow path 301 and the second refrigerant flow path 302, it is possible to achieve both the cooling effect of the first refrigerant flow path 301 and the cooling effect of the second refrigerant flow path 302.

[0064] Furthermore, in this embodiment 1, the flow rate adjustment unit 36 ​​is configured to narrow the flow path width of the first refrigerant flow path 301. This makes it possible to form a flow rate adjustment unit 36 ​​that can be adjusted to a desired flow rate with a simple configuration.

[0065] Furthermore, in this embodiment 1, the refrigerant supply unit 41 is configured to contact adjacent cooling members 1 when the cooling members 1 are placed between a plurality of stacked storage batteries 70, and to communicate with the refrigerant supply unit 41 of the adjacent cooling member 1, and the portion that contacts the adjacent cooling member 1 is formed by a first seal portion 42 made of a sealing material. In addition, the refrigerant discharge unit 51 is configured to contact adjacent cooling members 1 when the cooling members 1 are placed between a plurality of stacked storage batteries 70, and to communicate with the refrigerant discharge unit 51 of the adjacent cooling member 1, and the portion that contacts the adjacent cooling member 1 is formed by a second seal portion 52 made of a sealing material. This makes it possible to prevent refrigerant leakage from between adjacent cooling members 1 when they are placed between a plurality of stacked storage batteries 70.

[0066] Furthermore, in this embodiment 1, the resin housing 10 includes a first seal portion connecting portion 43 that connects the first seal portion 42 and the first outer peripheral elastic portion 331 included in the first flow path forming portion 31, and a second seal portion connecting portion 53 that connects the second seal portion 52 and the first outer peripheral elastic portion 331 included in the first flow path forming portion 31. As a result, the substrate 20 is sandwiched between the first seal portion 42 and the second seal portion 52 and the first outer peripheral elastic portion 331, thereby preventing the first seal portion 42 and the second seal portion 52 and the first outer peripheral elastic portion 331 from falling off the substrate 20.

[0067] Furthermore, in this embodiment 1, the refrigerant supply section 41 and the refrigerant discharge section 51 are configured to abut against the lid 60 of adjacent cooling members 1. The lid 60 has a supply-side lid through-hole 63 through which the refrigerant supplied from the refrigerant supply section 41 passes, and a discharge-side lid through-hole 64 through which the refrigerant discharged from the refrigerant discharge section 51 passes. The flow path forming section 30 includes a supply-side lid support section 37 that abuts against the opposite side of the portion of the lid 60 from which the refrigerant supply section 41 of adjacent cooling members 1 abuts, and a discharge-side lid support section 38 that abuts against the opposite side of the lid 60 from which the refrigerant discharge section 51 of adjacent cooling members 1 abuts. As a result, the supply-side lid support section 37 and the discharge-side lid support section 38 can support the refrigerant supply section 41 and the refrigerant discharge section 51, and deformation of the lid 60 can be prevented.

[0068] Furthermore, in this embodiment 1, there is an engaging portion 55 that engages the resin housing 10 and the lid 60 with each other. This prevents the lid 60 from falling off and improves the handling of the cooling member 1.

[0069] Furthermore, in this embodiment 1, the refrigerant inlet 40 and the refrigerant outlet 50 are provided in a region near one side of the substrate 20. This makes it possible to reduce the size of the cooling member 1 and achieve miniaturization.

[0070] 14. Effects of the battery storage device 100 The battery device 100 of this embodiment 1 includes a cooling member 1 and a plurality of stacked batteries 70, the cooling member 1 being in contact with the front surfaces 71 and 72 of the batteries 70. This allows the cooling member 1 to deform in accordance with the expansion or contraction of the batteries 70 and to provide a high cooling effect to the batteries 70.

[0071] Furthermore, in this embodiment 1, the storage battery 70 is a lithium-ion storage battery. This provides a high cooling effect for rapid charging of lithium-ion storage batteries, which generate a lot of heat, thereby suppressing degradation of the storage battery 70 due to heat and improving the lifespan of the storage battery device 100.

[0072] Furthermore, in this embodiment 1, the cooling member 1 and the storage battery 70 are stacked while being pressed in the stacking direction, and the cooling member 1 is pressed by the adjacent storage battery 70, thereby fixing the substrate 20 and the lid 60 to each other. This makes it possible to improve the cooling effect of the cooling member 1 on the storage battery 70 while allowing the cooling member 1 to follow the expansion and contraction of the storage battery 70.

[0073] Furthermore, in this embodiment 1, the resin housing 10 has a cylindrical fixing portion 56 for fixing adjacent cooling members 1 to each other, and by inserting a rod-shaped member 57 through the fixing portion 56, adjacent cooling members 1 are fixed in a position relative to each other. This makes it easy to position adjacent cooling members 1.

[0074] 15. Effects and benefits of the manufacturing method for the cooling element 1 for storage batteries. The manufacturing method for a cooling member for a storage battery according to this embodiment 1 includes a refrigerant inlet / outlet forming step S1 in which a refrigerant inlet portion 40 and a refrigerant outlet portion 50 are formed on a substrate 20, a flow path forming portion forming step S2 in which a flow path forming portion 30 is formed on the substrate 20, and a lid lamination step S3 in which a lid 60 is laminated on the resin housing 10 so as to cover the side of the resin housing 10 on which the flow path forming portion 30 is provided and to contact the flow path forming portion 30 to close the refrigerant flow path 300. In the flow path forming portion forming step S2, at least a part of the flow path forming portion 30 is formed of an elastic portion 33.

[0075] As a result, the flow path forming section 30 can elastically deform in response to the expansion and contraction of the battery 70, thereby improving its ability to follow the expansion and contraction of the battery 70. Furthermore, by bringing the plate-shaped cover 60 that closes the refrigerant flow path 300 into contact with the underside of the battery 70 as a cooling surface, the cooling effect of the battery 70 can be improved. In addition, since the cooling member 1 is formed by assembling the cover 60 to the resin housing 10, it is easy to assemble.

[0076] Furthermore, in this embodiment 1, in the flow path forming step S2, an elastic portion 33 is formed in the flow path forming portion 30 at a position that contacts the cover 60. As a result, the portion of the flow path forming portion 30 that contacts the cover 60 becomes elastically deformable, improving the adhesion between the flow path forming portion 30 and the cover 60 and preventing refrigerant leakage.

[0077] Furthermore, in this embodiment 1, in the lid lamination process S3, the resin housing 10 and the lid 60 are engaged with each other by an engaging portion 55 that engages the resin housing 10 and the lid 60 with each other. This prevents the lid 60 from falling off the cooling member 1 and improves the handling of the cooling member 1.

[0078] Furthermore, in this embodiment 1, in the flow channel formation step S2, a first flow channel forming section 31 including a first elastic section (first outer elastic section 331, first inner elastic section 332) is formed on the first main surface 21 of the substrate 20 by supplying elastic material to the first main surface 21 of the substrate 20, and a second flow channel forming section 32 including a second elastic section (second outer elastic section 333, second inner elastic section 334) is formed on the second main surface 22 of the substrate 20 by supplying a portion of the elastic material supplied to the first main surface 21 of the substrate 20 to the second main surface 22 of the substrate 20 via an elastic connecting section 34 formed through the substrate 20. Then, in the lid lamination process S3, the first lid 61 is laminated onto the resin housing 10 so as to cover the side of the resin housing 10 where the first flow path forming portion 31 is formed and to abut against the first flow path forming portion 31 to form the first refrigerant flow path 301, and the second lid 62 is laminated onto the resin housing 10 so as to cover the side of the resin housing 10 where the second flow path forming portion 32 is formed and to abut against the second flow path forming portion 32 to form the second refrigerant flow path 302.

[0079] This allows the first elastic parts 331 and 332 to be fixed to the substrate 20 without the need for adhesives or the like, and prevents the first elastic parts 331 and 332 and the second elastic parts 333 and 334 from peeling off the substrate 20. Furthermore, when forming the elastic material by casting, the first channel forming part 31 and the second channel forming part 32 can be formed simultaneously via the elastic connecting part 34.

[0080] 16. Effects of the manufacturing method of the battery storage device 100 The manufacturing method for the battery device 100 of this embodiment 1 includes a battery stacking step S11 in which a cooling member 1 is placed between adjacent batteries 70 and the batteries 70 are stacked with the cooling member 1 in contact with the underside of the batteries 70, and a fixing step S12 in which the batteries 70 and the cooling member 1 are pressed and fixed in the stacking direction. As a result, the cooling member 1 having an elastically deformable flow path forming portion 30 is placed between adjacent batteries 70 and pressed in the stacking direction, so that the flow path forming portion 30 elastically deforms in accordance with the expansion and contraction of the batteries 70, thereby improving the ability to follow the expansion and contraction of the batteries 70. Furthermore, by bringing the plate-shaped lid 60 that closes the refrigerant flow path 300 into contact with the undersides 71 and 72 of the batteries 70 as a cooling surface, the cooling effect of the batteries 70 can be improved.

[0081] Furthermore, in this embodiment 1, in the fixing step S12, adjacent cooling members 1 are fixed by pressing them in the stacking direction while positioning them relative to each other by inserting a rod-shaped member 57 through a cylindrical fixing part 56 provided in the resin housing 10. This makes it easy to position adjacent cooling members 1.

[0082] (Embodiment 2) In the cooling member 1 of the above embodiment 1, there is a second cover 62 laminated on the second main surface 22 of the substrate 20 and a second engaging portion 552 that engages with the second cover 62. However, in this embodiment 2, as shown in Figure 17, there is no second cover 62 and no second engaging portion 552. Furthermore, as shown in Figure 17, in this embodiment 2, when the cooling member 1 is installed between a plurality of storage batteries 70, the resin housing 10 is configured such that the front surface 71 of the storage battery 70 adjacent to the cooling member 1 covers the side of the resin housing 10 where the second flow path forming portion 32 is provided and abuts against the second flow path forming portion 32.

[0083] Furthermore, in the manufacturing method of the cooling member 1 of this embodiment 2, instead of the flow path forming step S2 in the case of embodiment 1, in the flow path forming step S2, an elastic material is supplied to the first main surface 21 of the substrate 20 to form a first flow path forming section 31 including a first elastic section (first outer elastic section 331, first inner elastic section 332) on the first main surface 21 of the substrate 20, and a portion of the elastic material supplied to the first main surface 21 of the substrate 20 is supplied to the second main surface 22 of the substrate 20 via an elastic connecting section 34 formed through the substrate 20 to form a second flow path forming section 32 including a second elastic section (second outer elastic section 333, second inner elastic section 334) on the second main surface 22 of the substrate 20. Then, in the lid lamination process S3, the lid 60 is laminated onto the resin housing 10 so as to cover the side of the resin housing 10 where the first flow path forming portion 31 is formed and to abut against the first flow path forming portion 31 to form the first refrigerant flow path 301. The second flow path forming portion 32 is configured such that when the cooling member 1 is placed between a plurality of storage batteries 70, the front surface 72 of the storage battery 70 adjacent to the cooling member 1 covers the side of the resin housing 10 where the second flow path forming portion 32 is provided and abuts against the second flow path forming portion 32 to form the second refrigerant flow path 302. Components equivalent to those in Embodiment 1 are denoted by the same reference numerals as in Embodiment 1 and their descriptions are omitted.

[0084] According to the cooling member 1 of Embodiment 2 described above, the first elastic parts 331, 332 and the second elastic parts 333, 334 can be fixed to the substrate 20 without using adhesives or the like to bond them to the substrate 20, and the first elastic parts 331, 332 and the second elastic parts 333, 334 can be prevented from peeling off from the substrate 20. Furthermore, when forming the elastic material by casting, the first channel forming part 31 and the second channel forming part 32 can be formed simultaneously via the elastic connecting part 34. In addition, since there is no need to use the second cover 62, the number of parts can be reduced. Moreover, the cooling member 1 of Embodiment 2 can be manufactured according to the manufacturing method of the cooling member 1 of Embodiment 2. It should be noted that Embodiment 2 also provides the same effects as Embodiment 1.

[0085] According to Embodiment 1 and Embodiment 2, it is possible to provide a cooling member 1, a battery storage device 100, and a method for manufacturing the same, which can achieve both improved responsiveness to expansion or contraction of the storage battery 70 and improved cooling effect.

[0086] The present invention is not limited to the embodiments described above, and can be applied to various embodiments without departing from its spirit. [Explanation of Symbols]

[0087] 1 Cooling component 100 Battery storage device 10 Resin housing 20 circuit boards 21, 22 Main surface 23 Groove 24 Protrusion 30 Flow channel forming section 31 First channel forming section 32 Second channel forming section 300 Refrigerant flow path 301 First Refrigerant Flow Path 302 Second Refrigerant Flow Path 311 First outer rib 312 First Inner Rib 321 Second outer rib 322 Second Inner Rib 33 Elastic part 331 First outer elastic section 332 First inner elastic section 333 Second outer elastic section 334 Second inner elastic section 34 Elastic connecting part 341 First elastic joint 342 Second Elastic Connecting Section 35 Flow channel connecting section 351 Inflow side flow path communication section 352 Outlet side flow path communication section 36 Flow rate adjustment section 37 Supply side lid support part 38 Discharge side lid support part 40 Refrigerant inlet 41 Refrigerant supply unit 42 First seal section 43 First seal connecting section 50 Refrigerant outlet 51 Refrigerant discharge part 52 Second seal section 53 Second seal connecting section 55 Engaging part 551 First engagement portion 552 Second engaging part 56 Fixed part 57 Rod-shaped member 60 Lid 61. First Lid 62 Second Lid 63 Supply side lid through hole 64 Discharge side cover through hole 70 Battery 71, 72 ventral surface

Claims

1. A cooling member for batteries, provided between adjacent batteries in a stacked array of batteries, Including a resin housing and a lid, The aforementioned resin housing is A resin substrate and A rib-shaped channel forming portion is provided on at least one main surface of the substrate and forms a refrigerant channel through which the refrigerant flows, A refrigerant inlet portion that penetrates the substrate and communicates with the refrigerant flow path, allowing the refrigerant to flow into the refrigerant flow path, The substrate has a refrigerant outlet that penetrates the substrate and communicates with the refrigerant flow path, causing the refrigerant to flow out of the refrigerant flow path, The cover is made of a plate-shaped member laminated on the resin housing so as to cover the side of the resin housing where the flow path forming portion is provided and to abut the flow path forming portion and close the refrigerant flow path. The aforementioned flow channel forming portion includes an elastic portion formed of an elastic material including rubber or elastomer, and is a cooling member for a storage battery.

2. The cooling member for a storage battery according to claim 1, wherein the elastic portion is formed at a position in the flow path forming portion that contacts the cover.

3. The aforementioned flow channel forming section is A first channel forming section is provided on the first main surface of the substrate and forms a first refrigerant channel through which the refrigerant flows, It includes a second flow path forming section provided on a second main surface located on the opposite side of the first main surface, which forms a second refrigerant flow path for circulating the refrigerant, The aforementioned cover is A first lid covers the side of the resin housing where the first channel forming portion is provided and contacts the first channel forming portion, A cooling member for a storage battery according to claim 2, comprising: a second cover that covers the side of the resin housing on which the second flow path forming portion is provided and abuts against the second flow path forming portion.

4. The aforementioned flow channel forming section is A first channel forming section is provided on the first main surface of the substrate and forms a first refrigerant channel through which the refrigerant flows, It includes a second flow path forming section provided on a second main surface located on the opposite side of the first main surface, which forms a second refrigerant flow path for circulating the refrigerant, The cover covers the side of the resin housing where the first channel forming portion is provided and is in contact with the first channel forming portion. The cooling member for a battery according to claim 2, wherein when the cooling member is provided between the plurality of batteries, the underside of the battery adjacent to the cooling member covers the side of the resin housing where the second flow path forming portion is provided and contacts the second flow path forming portion.

5. The cooling member for a storage battery according to claim 3 or 4, wherein the resin housing penetrates the substrate and includes an elastic connecting portion made of an elastic material that connects a first elastic portion, which is the elastic portion included in the first channel forming portion, and a second elastic portion, which is the elastic portion included in the second channel forming portion.

6. The cooling member for a storage battery according to claim 5, wherein the elastic connecting portion connects a part of the first elastic portion and a part of the second elastic portion.

7. The first flow path forming portion includes a first outer rib that forms the outer periphery of the refrigerant flow path and a first inner rib located inside the first outer rib. The second flow path forming portion includes a second outer rib that forms the outer periphery of the refrigerant flow path and a second inner rib located inside the second outer rib. The elastic connecting portion is A first elastic connecting portion connects the first elastic portion, which is the first elastic portion included in the first inner rib, and the second elastic portion, which is the second elastic portion included in the second inner rib, A cooling member for a storage battery according to claim 5, comprising a second elastic connecting portion that connects the first inner elastic portion, which is the first elastic portion included in the first inner rib, and the second outer elastic portion, which is the second elastic portion included in the second outer rib.

8. The cooling member for a storage battery according to claim 7, wherein the first elastic connecting portion and the second elastic connecting portion are located inside the first outer peripheral rib and the second outer peripheral rib.

9. The flow path forming portion includes an outer rib that forms the outer periphery of the refrigerant flow path and an inner rib located inside the outer rib. The outer peripheral rib consists of an outer peripheral elastic portion which is the elastic portion that covers the groove portion recessed in the substrate, The cooling member for a storage battery according to any one of claims 1 to 4, wherein the inner rib comprises a resin projection provided on the substrate and an inner elastic portion which is the elastic portion that covers the projection.

10. The cooling member for a storage battery according to claim 9, wherein the outer elastic portion and the inner elastic portion are formed of the same material.

11. The cooling member for a storage battery according to any one of claims 3 or 4, wherein the resin housing penetrates the substrate and has a flow channel communication portion that connects the first refrigerant flow channel and the second refrigerant flow channel.

12. The aforementioned resin housing is A refrigerant supply unit comprising a first cylindrical member erected on the second main surface of the substrate and connected to the refrigerant inlet, which supplies the refrigerant flowing into the refrigerant inlet, It includes a second cylindrical member erected on the second main surface of the substrate and connected to the refrigerant outlet, and a refrigerant discharge section for discharging the refrigerant flowing out from the refrigerant outlet, The cooling member for a storage battery according to claim 11, wherein the resin housing is configured such that the refrigerant supplied from the refrigerant supply unit flows into the first refrigerant flow path via the refrigerant inlet, flows from the first refrigerant flow path into the second refrigerant flow path via the flow path connecting unit, flows out from the second refrigerant flow path into the first refrigerant flow path via the flow path connecting unit, flows out from the first refrigerant flow path to the refrigerant discharge unit via the refrigerant outlet unit, and is discharged from the refrigerant discharge unit.

13. The cooling member for a storage battery according to claim 12, wherein the first flow path forming section has a flow rate adjustment section that adjusts the flow rate of refrigerant that flows into the flow path connecting section and circulates through the second refrigerant flow path, and the flow rate of refrigerant that does not flow into the flow path connecting section and circulates through the first refrigerant flow path, from the refrigerant that flows into the first refrigerant flow path from the refrigerant inlet section.

14. The cooling member for a storage battery according to claim 13, wherein the flow rate adjustment unit is configured to narrow the flow path width of the first refrigerant flow path.

15. The refrigerant supply unit is configured to contact adjacent cooling members when the cooling members are placed between the stacked plurality of storage batteries, and to communicate with the refrigerant supply unit of the adjacent cooling member, and the portion that contacts the adjacent cooling member is formed by a first sealing portion made of a sealing material. The cooling member for a storage battery according to claim 12, wherein the refrigerant discharge portion is configured to contact an adjacent cooling member when the cooling member is placed between the stacked plurality of storage batteries, and to communicate with the refrigerant discharge portion of the adjacent cooling member, and the portion that contacts the adjacent cooling member is formed by a second sealing portion made of a sealing material.

16. The aforementioned resin housing is A first seal portion connecting portion that connects the first seal portion and the first elastic portion which is the elastic portion included in the first flow path forming portion, A cooling member for a storage battery according to claim 15, comprising a second seal portion connecting portion that connects the second seal portion and the first elastic portion which is the elastic portion included in the first flow path forming portion.

17. The refrigerant supply unit and the refrigerant discharge unit are configured to contact the lids of adjacent cooling members. The cover has a supply-side cover through-hole for allowing refrigerant supplied from the refrigerant supply unit to pass through, and a discharge-side cover through-hole for allowing refrigerant discharged from the refrigerant discharge unit to pass through. The aforementioned flow channel forming section is A supply-side cover support portion that abuts against the opposite side of the portion of the adjacent cooling member that abuts against the refrigerant supply portion of the cover, A cooling member for a storage battery according to claim 12, further comprising: an outlet-side cover support portion that abuts against the opposite side of the portion of the cover that abuts against the portion of the adjacent cooling member that abuts against the refrigerant discharge portion of the cover.

18. A cooling member for a storage battery according to any one of claims 1 to 4, having an engaging portion for engaging the resin housing and the lid with each other.

19. The cooling member for a storage battery according to any one of claims 1 to 4, wherein the refrigerant inlet and the refrigerant outlet are provided in a region near one side of the substrate.

20. A battery storage device comprising a cooling member for a storage battery according to any one of claims 1 to 4, and a plurality of stacked storage batteries, A battery device in which the cooling member is in contact with the front surface of the battery.

21. The battery storage device according to claim 20, wherein the battery storage device is a lithium-ion battery.

22. The cooling member and the storage battery are stacked in a state where they are pressed in the stacking direction. The battery device according to claim 20, wherein the cooling member is pressed by adjacent batteries, thereby fixing the substrate and the cover to each other.

23. The battery storage device according to claim 20, wherein the resin housing has a cylindrical fixing portion for fixing adjacent cooling members to each other, and adjacent cooling members are fixed in a position relative to each other by inserting a rod-shaped member through the fixing portion.

24. A method for manufacturing a cooling member for a storage battery according to any one of claims 1 to 4, A step of forming a refrigerant inlet and outlet portion on the substrate, A step of forming a channel forming portion on the substrate, The process includes a lid lamination step of laminating the lid onto the resin housing such that the lid covers the side of the resin housing where the flow path forming portion is provided and is in contact with the flow path forming portion to block the refrigerant flow path, A method for manufacturing a cooling member for a storage battery, wherein in the step of forming the flow channel forming portion, at least a part of the flow channel forming portion is formed with the elastic portion.

25. A method for manufacturing a cooling member for a storage battery according to claim 24, wherein in the step of forming the flow channel forming portion, the elastic portion is formed at a position in the flow channel forming portion that contacts the cover.

26. The method for manufacturing a cooling member for a storage battery according to claim 24, wherein in the lid lamination step, the resin housing and the lid are engaged with each other by an engaging portion that engages the resin housing and the lid with each other.

27. In the channel formation step, the elastic material is supplied to the first main surface of the substrate to form a first channel formation portion including a first elastic portion on the first main surface of the substrate, and a portion of the elastic material supplied to the first main surface of the substrate is supplied to the second main surface of the substrate via an elastic connecting portion formed through the substrate to form a second channel formation portion including a second elastic portion on the second main surface of the substrate. A method for manufacturing a cooling member for a storage battery according to claim 24, wherein in the lid lamination step, a first lid is laminated on the resin housing so as to cover the side of the resin housing where the first flow path forming portion is formed and to abut against the first flow path forming portion to form a first refrigerant flow path, and a second lid is laminated on the resin housing so as to cover the side of the resin housing where the second flow path forming portion is formed and to abut against the second flow path forming portion to form a second refrigerant flow path.

28. In the channel formation step, the elastic material is supplied to the first main surface of the substrate to form a first channel formation portion including a first elastic portion on the first main surface of the substrate, and a portion of the elastic material supplied to the first main surface of the substrate is supplied to the second main surface of the substrate via an elastic connecting portion formed through the substrate to form a second channel formation portion including a second elastic portion on the second main surface of the substrate. In the lid lamination step, the lid is laminated onto the resin housing so as to cover the side of the resin housing where the first flow path forming portion is formed and to abut the first flow path forming portion to form a first refrigerant flow path. The method for manufacturing a cooling member for a storage battery according to claim 24, wherein the second flow path forming portion is configured such that when the cooling member is provided between the plurality of storage batteries, the front surface of the storage battery adjacent to the cooling member covers the side of the resin housing on which the second flow path forming portion is provided and contacts the second flow path forming portion to form a second refrigerant flow path.

29. A method for manufacturing a battery storage device according to claim 20, A battery stacking step in which the cooling member is placed between adjacent batteries and the batteries are stacked with the cooling member in contact with the front surface of the batteries, A method for manufacturing a battery device, comprising a fixing step of pressing and fixing the battery and the cooling member in the stacking direction.

30. The method for manufacturing a storage battery device according to claim 29, wherein in the fixing step, a rod-shaped member is inserted through a cylindrical fixing portion provided in the resin housing, thereby pressing and fixing adjacent cooling members in the stacking direction while positioning them relative to each other.

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