Cooler, arrangement structure of supply / discharge unit, and power storage device

Abstract

To provide a cooler which can be easily manufactured.SOLUTION: A cooler (3) according to the present invention is a cooler mounted on a power storage device (1), and includes a cooler main body (3a) in which a flow path (3c) for a refrigerant is formed, and a supply-discharge portion (3c) that communicates with the flow path (3a) of the cooler main body (3c) and is inserted into the cooler main body (3a) to supply the refrigerant to the flow path (3c) of the cooler main body (3a) or discharge the refrigerant from the flow path () of the cooler main body (). 3b 3a. The supply / discharge portion (3b) includes a contact portion (3i) that comes into contact with a contacted portion of the power storage device (1) to arrange the supply / discharge portion (3b) at a preset position of the cooler body (3a) in a state where the cooler (3) is mounted on the power storage device (1).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a cooler, an arrangement structure of a supply and discharge unit, and an electricity storage device. [Background technology]

[0002] The power storage device is equipped with a cooler to cool the battery modules. For example, the cooler in Patent Document 1 has a structure in which a supply / discharge part with a fixed base is brazed to a cooler body made of extruded aluminum. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Chinese Patent Application Publication No. 202380008512 Summary of the Invention [Problem to be solved by the invention]

[0004] The present applicant has found the following problem: The cooler of Patent Document 1 has a configuration in which the supply and discharge part to which the mouthpiece is fixed is brazed to the cooler body, and therefore has a problem in that manufacturing is complicated.

[0005] The present disclosure has been made in consideration of such problems, and provides a cooler, a supply and discharge unit layout structure, and a power storage device that are easy to manufacture. [Means for solving the problem]

[0006] A cooler according to one aspect of the present disclosure is a cooler mounted on an electricity storage device, a cooler body having a refrigerant flow passage formed therein; a supply / discharge part that communicates with the flow passage of the cooler body and is inserted into the cooler body to supply the refrigerant to the flow passage of the cooler body or to discharge the refrigerant from the flow passage of the cooler body; Equipped with The supply / discharge unit has a contact portion that contacts a contacted portion of the power storage device to position the supply / discharge unit at a predetermined position on the cooler body when the cooler is mounted on the power storage device.

[0007] In the above-described cooler, the contacted portion of the power storage device is preferably a case of the power storage device.

[0008] In the above-described cooler, the supply / discharge part preferably has an insertion part that is inserted into the cooler body, and a first packing member that is fixed to an inner circumferential surface of the insertion part.

[0009] In the above-described cooler, it is preferable that the insertion portion and the first packing member are integrally formed from resin.

[0010] In the above-mentioned cooler, the cooler body is an extruded aluminum material, The insert part is preferably inserted into an end of the cooler body and has a cap-shaped insert part body.

[0011] In the above-described cooler, it is preferable that the supply / discharge portion has an engaging portion that engages with an engaged portion formed on the cooler body.

[0012] In the above-described cooler, the cooler body preferably has a second packing member in contact with the supply / discharge part.

[0013] An arrangement structure of a supply / discharge unit according to one aspect of the present disclosure is an arrangement structure of a supply / discharge unit that is arranged in a cooler body of a cooler mounted on an electricity storage device to supply a refrigerant to the cooler body or to discharge the refrigerant from the cooler body, The supply and discharge part is inserted into the cooler body, and when the cooler is mounted on the power storage device, the supply and discharge part comes into contact with the contacted part of the power storage device and is positioned at a predetermined position on the cooler body.

[0014] An electricity storage device according to one aspect of the present disclosure includes the above-described cooler.

[0015] In the above-described power storage device, the cooler is preferably disposed between the battery modules.

[0016] In the above-described power storage device, the supply / discharge unit has an insertion portion main body that is inserted into the cooler main body, and a communication portion that is provided in the insertion portion main body and communicates with a flow passage of the cooler main body, It is preferable that the communication portions of the supply and discharge portions of the coolers adjacent to each other across the battery module are joined together by a fitting structure. [Effects of the Invention]

[0017] According to the present disclosure, it is possible to realize a cooler, a supply / discharge unit arrangement structure, and a power storage device that are easy to manufacture. [Brief explanation of the drawings]

[0018] [Figure 1] 3 is a simplified diagram showing the relationship between the battery modules, the cooler, and the case of the power storage device of the first embodiment. FIG. [Figure 2] 4 is an exploded perspective view showing a cooler main body and a supply / discharge unit at the Y-axis - side of the cooler in the electricity storage device of the first embodiment. FIG. [Figure 3] 3 is a perspective view showing a portion of a cooler main body of the cooler on the negative Y-axis side in the electricity storage device of the first embodiment. FIG. [Figure 4] 4 is a cross-sectional view showing a supply / discharge part on the negative Y-axis side of the cooler in the electricity storage device of the first embodiment. FIG. [Figure 5] 3 is a view of a connecting pipe in the electricity storage device of the first embodiment as viewed from the + side of the Y axis. FIG. [Figure 6] 3 is a view of a connecting pipe in the electricity storage device of the first embodiment as viewed from the negative side of the X axis. FIG. [Figure 7] 10 is a partial cross-sectional view showing an engagement structure between a cooler body and a supply / discharge unit at a portion on the negative Y-axis side of the cooler in the electricity storage device of the second embodiment. FIG. [Figure 8]FIG. 10 is a perspective view showing a portion on the negative Y-axis side of a cooler main body in an electricity storage device according to a second embodiment. [Figure 9] 10 is a perspective view showing a supply / discharge part on the negative Y-axis side of a cooler in an electricity storage device according to a second embodiment. FIG. [Figure 10] FIG. 10 is a simplified diagram showing the relationship between the battery modules, cooler, and case of the electricity storage device of the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0019] Specific embodiments to which the present disclosure is applied will be described in detail below with reference to the drawings. However, the present disclosure is not limited to the following embodiments. For clarity of explanation, the following description and drawings have been simplified as appropriate. For clarity of explanation, the following description will be made using a three-dimensional (XYZ) coordinate system.

[0020] <First Embodiment> 1 is a simplified diagram showing the relationship between the battery modules, cooler, and case of a power storage device according to the present embodiment. The power storage device 1 is suitable, for example, as a power storage device to be mounted on a vehicle. The power storage device 1 includes a battery module 2, a cooler 3, and a case 4.

[0021] The battery module 2 is formed by electrically connecting battery cells stacked in the Y-axis direction, for example. The battery modules 2 are arranged at intervals in the X-axis direction, for example, as shown in Fig. 1. The battery modules 2 are not limited to lithium-ion batteries, and may be nickel-metal hydride batteries, nickel-cadmium batteries, all-solid-state batteries, or the like.

[0022] Fig. 2 is an exploded perspective view showing a cooler body and a supply / discharge unit on the negative Y-axis side of the cooler in the power storage device of the present embodiment. Fig. 3 is a perspective view showing the negative Y-axis side of the cooler body of the cooler in the power storage device of the present embodiment. Fig. 4 is a cross-sectional view showing the supply / discharge unit on the negative Y-axis side of the cooler in the power storage device of the present embodiment.

[0023] As shown in Fig. 2, the cooler 3 includes a cooler main body 3a and a supply / discharge unit 3b. The cooler main body 3a has a substantially rectangular shape when viewed from the Y-axis direction, and extends in the Y-axis direction, as shown in Fig. 3. The cooler main body 3a may be an extruded material of aluminum (including aluminum alloy).

[0024] That is, the end of the cooler body 3a on the + side of the Y axis and the end of the cooler body 3a on the - side of the Y axis may be open, as shown in Fig. 3. A flow path 3c through which the refrigerant flows is formed inside the cooler body 3a. The flow path 3c extends in the Y axis direction. A plurality of flow paths 3c are arranged in the Z axis direction. Here, the refrigerant may be a flowable gas or liquid.

[0025] 2 and 4, the supply / discharge unit 3b includes an insertion portion 3d and a packing 3e. The insertion portion 3d includes an insertion portion main body 3f and a communication portion 3g. The insertion portion main body 3f is cap-shaped so as to be able to fit into the end of the cooler main body 3a in the Y-axis direction, and the end on the Y-axis + side or the Y-axis - side is closed.

[0026] 1 and 2, a through-hole 3h is formed in at least one of the end of the insertion portion body 3f on the +X-axis side or the end of the insertion portion body 3f on the -X-axis side. The communication portion 3g is substantially cylindrical and extends in the X-axis direction. The communication portion 3g protrudes outward from the insertion portion body 3f so as to be continuous with the through-hole 3h of the insertion portion body 3f.

[0027] The inserting portion 3d can be made of a resin having a high rigidity relative to the packing 3e, such as fiber-reinforced nylon made by mixing glass wool with nylon 66. However, the inserting portion 3d may be made of metal or the like, and the material is not limited.

[0028] The packing 3e is disposed along the inner peripheral surface of the insertion portion main body 3f as shown in Figures 1 and 2. The packing 3e may be fixed to the Z-axis positive side, Z-axis negative side, X-axis positive side, and X-axis negative side portions of the inner peripheral surface of the insertion portion main body 3f as shown in Figures 1 and 4. The packing 3e may also be fixed to the inner peripheral surface of the communication portion 3g.

[0029] The packing 3e can be made of a resin, such as an elastomer, that has elasticity relative to the insertion portion 3d. When the insertion portion 3d and the packing 3e are made of resin, they can be integrally formed by, for example, two-color molding. This allows the supply / discharge portion 3b to be easily formed.

[0030] 1, the supply / discharge unit 3b is inserted into the end of the cooler body 3a on the + side of the Y axis and the end of the cooler body 3a on the - side of the Y axis. In other words, when the insertion portion body 3f of the supply / discharge unit 3b is inserted into the cooler body 3a, it closes the open end of the cooler body 3a.

[0031] As shown in FIG. 1, the supply / discharge section 3b inserted into the end of the cooler main body 3a on the + side of the Y axis and the supply / discharge section 3b inserted into the end of the cooler main body 3a on the - side of the Y axis are configured to be symmetrical with respect to the XZ plane.

[0032] At this time, the penetration portion 3h of the insertion portion main body 3f in the supply / discharge portion 3b is positioned so as not to interfere with the cooler main body 3a, as shown in Fig. 1. Also, the packing 3e of the supply / discharge portion 3b is in contact with the outer peripheral surface of the cooler main body 3a.

[0033] For example, as shown in FIG. 1, such a cooler 3 is arranged between battery modules 2 arranged in the X-axis direction, on the X-axis + side of the battery modules 2 arranged on the X-axis + side, and on the X-axis - side of the battery modules 2 arranged on the X-axis - side.

[0034] At this time, for example, as shown in FIG. 1, the communication portion 3g of the supply / discharge portion 3b inserted into the cooler body 3a of the cooler 3 arranged on the + side of the X axis protrudes from the insertion portion body 3f to the - side of the X axis, and the communication portion 3g of the supply / discharge portion 3b inserted into the cooler body 3a of the other cooler 3 protrudes from the insertion portion body 3f to the + side and the - side of the X axis.

[0035] 1, for example, the communicating portions 3g facing each other in the X-axis direction on the +Y-axis side and the -Y-axis side of the cooler 3 are connected by the connecting pipe 5. Also, for example, the communicating portion 3g protruding from the insertion portion main body 3f of the supply / discharge portion 3b on the +Y-axis side of the cooler 3 arranged on the -X-axis side to the -X-axis side is connected to a supply portion that supplies the refrigerant, and the communicating portion 3g protruding from the insertion portion main body 3f of the supply / discharge portion 3b on the -Y-axis side of the cooler 3 arranged on the -X-axis side to the -X-axis side is connected to a discharge portion that discharges the refrigerant.

[0036] As a result, for example, the refrigerant supplied from the supply unit is supplied from the supply / discharge unit 3b on the +Y-axis side of each cooler 3 to the cooler body 3a, moves through the flow path 3c of each cooler body 3a to the -Y-axis side, and then is discharged from the supply / discharge unit 3b on the -Y-axis side of each cooler 3 to the discharge unit. At this time, the battery module 2 adjacent to each cooler 3 is cooled.

[0037] Here, Fig. 5 is a view of the connecting pipe in the power storage device of this embodiment as seen from the + side of the Y axis. Fig. 6 is a view of the connecting pipe in the power storage device of this embodiment as seen from the - side of the X axis. As shown in Figs. 5 and 6, the connecting pipe 5 includes, for example, a connecting pipe main body 5a and a packing 5b.

[0038] 5 and 6, the connecting pipe body 5a has a substantially cylindrical shape and extends in the X-axis direction. The connecting pipe body 5a can be made of a resin that has a high rigidity relative to the packing 5b, such as fiber-reinforced nylon made by mixing glass wool with nylon 66.

[0039] As shown in Fig. 6, the packing 5b is fixed to the inner peripheral surface of the connecting pipe main body 5a. The packing 5b can be made of a resin, such as an elastomer, that has elasticity relative to the connecting pipe main body 5a. However, the connecting pipe 5 only needs to be configured to be able to connect the communicating portions 3g of the coolers 3 that face each other in the X-axis direction.

[0040] 1, the case 4 covers the battery module 2 and the cooler 3. The case 4 includes, for example, an upper case and a lower case, and houses the battery module 2 and the cooler 3 in the internal space between the upper case and the lower case.

[0041] At this time, it is preferable that the end portion on the Y-axis + side of the insertion portion main body 3f of the supply and discharge portion 3b on the Y-axis + side of the cooler 3 is approximately in contact with the inner surface of the case 4, and the end portion on the Y-axis - side of the insertion portion main body 3f of the supply and discharge portion 3b on the Y-axis - side of the cooler 3 is approximately in contact with the inner surface of the case 4.

[0042] As a result, when refrigerant is supplied to the cooler 3, the pressure inside the cooler 3 increases and the supply and discharge section 3b is pushed outward relative to the cooler main body 3a in the Y-axis direction. However, since the outer end of the supply and discharge section 3b on the cooler main body 3a is approximately in contact with the inner surface of the case 4, the movement of the supply and discharge section 3b outward from the cooler main body 3a is restricted, and an arrangement structure can be realized in which the supply and discharge section 3b is positioned at a predetermined position on the cooler main body 3a.

[0043] In other words, the outer end of the supply / discharge section 3b on the cooler main body 3a can function as a contact section 3i that comes into contact with the inner surface of the case 4 in order to position the supply / discharge section 3b at a predetermined position on the cooler main body 3a, and the inner surface of the case 4 can function as a contacted section 4a that comes into contact with the contact section 3i.

[0044] Therefore, there is no need to arrange the supply / discharge part 3b on the cooler body 3a by brazing or the like, and it is possible to easily manufacture the cooler 3, and in turn the electricity storage device 1. It is preferable that the case 4 includes an EA (Energy Absorption) part 4b as shown in FIG.

[0045] In this way, the arrangement structure of the cooler 3 and the supply and discharge part 3b, and the electricity storage device 1 can arrange the supply and discharge part 3b at a predetermined position in the cooler body 3a with a simple configuration in which the supply and discharge part 3b is inserted into the cooler body 3a and brought into contact with the case 4. Therefore, there is no need to arrange the supply and discharge part 3b on the cooler body 3a by brazing or the like, and the cooler 3, and therefore the electricity storage device 1, can be manufactured easily.

[0046] In particular, when the insertion portion body 3f of the supply and discharge portion 3b is formed in a cap shape and inserted into the cooler body 3a so as to close the open end of the cooler body 3a with the insertion portion body 3f, the force acting on the supply and discharge portion 3b by the refrigerant to the outside of the cooler body 3a is received by the case 4, and the supply and discharge portion 3b can be positioned in a predetermined position on the cooler body 3a in an extremely rational manner.

[0047] Furthermore, when the supply / discharge section 3b is brought into contact with the case 4 and placed at a predetermined position on the cooler main body 3a, there is no need to process the case 4 separately, and the energy storage device 1 can be easily manufactured.

[0048] Furthermore, when the inserting portion 3d and the packing 3e of the supply / discharge portion 3b are made of resin, they can be integrally formed by, for example, two-color molding, which allows the supply / discharge portion 3b to be easily formed.

[0049] <Embodiment 2> Fig. 7 is a partial cross-sectional view showing an engagement structure between a cooler main body and a supply / discharge unit at the Y-axis - side of the cooler in the electricity storage device of the present embodiment. Fig. 8 is a perspective view showing the Y-axis - side of the cooler main body in the electricity storage device of the present embodiment. Fig. 9 is a perspective view showing the Y-axis - side of the cooler in the electricity storage device of the present embodiment.

[0050] 7, in the electricity storage device of the present embodiment, the cooler 21 has substantially the same configuration as the cooler 3 of the first embodiment, but the cooler main body 21a and the supply / discharge part 21b are engaged with each other by an engagement structure. In the following description, the same members as those in the electricity storage device 1 of the first embodiment are described using the same reference numerals.

[0051] In detail, as shown in FIG. 8, the cooler body 21a has a configuration substantially identical to that of the cooler body 3a of embodiment 1, but a groove portion 21c is formed at a position where the supply / discharge portion 21b overlaps with the supply / discharge portion 21b in the cooler body 21a when the supply / discharge portion 21b is inserted into the cooler body 21a, and a gasket 22 is fitted into the groove portion 21c.

[0052] 8, the groove 21c is formed along the outer peripheral surface of the cooler body 21a, and is arranged in a portion on the +Y-axis side of the cooler body 21a and a portion on the -Y-axis side of the cooler body 21a. The packing 22 may be a ring packing, and protrudes from the outer peripheral surface of the cooler body 21a when fitted in the groove 21c.

[0053] 7 and 8, the cooler body 21a includes an engaged portion 21e that engages with the engaging portion 21d of the supply / discharge portion 21b. The engaged portion 21e is disposed on the inner side of the cooler body 21a with respect to the groove portion 21c in the cooler body 21a, for example, in the Y-axis direction.

[0054] 8, the engaged portions 21e are arranged at the end of the cooler body 21a on the positive side of the Z axis and the end of the cooler body 21a on the negative side of the Z axis so as to face each other in the Z axis direction. The engaged portions 21e are, for example, grooves having a substantially rectangular shape when viewed from the X axis direction, and extend in the X axis direction. In this case, it is preferable that the grooves 21c and the engaged portions 21e are arranged so as not to overlap with the flow passages 3c when viewed from the Y axis direction. This allows the cooler body 21a to be easily formed by extrusion molding.

[0055] 9, supply / discharge section 21b has substantially the same configuration as supply / discharge section 3b of embodiment 1, but includes engaging section 21d. Here, in this embodiment, the portion of packing 3e that is fixed to the inner circumferential surface of insertion section body 3f can be omitted.

[0056] 7 and 9, the engagement portion 21d includes a protrusion 21f and a claw portion 21g. The protrusion 21f protrudes from the end of the insertion portion main body 3f on the +Z axis side and the end of the insertion portion main body 3f on the -Z axis side in the Y axis direction toward the opposite side of the insertion portion main body 3f. The protrusion 21f has, for example, a substantially rectangular shape when viewed from the Y axis direction.

[0057] 9, claw portion 21g protrudes from the tip of protrusion 21f toward the other protrusion 21f. Claw portion 21g has a generally triangular shape that slopes toward the other claw portion 21g as it approaches insertion portion main body 3f, for example, when viewed from the X-axis direction.

[0058] 7, such supply / discharge portion 21b is inserted into the end portion on the + side of the Y axis of cooler body 21a and the end portion on the - side of the Y axis of cooler body 21a. At this time, packing 22 contacts the inner circumferential surface of insertion portion body 3f of supply / discharge portion 21b.

[0059] Then, the claw portions 21g of the engaging portions 21d of the supply / discharge portion 21b are engaged with the engaged portions 21e of the cooler body 21a, thereby preventing the supply / discharge portion 21b from coming off the cooler body 21a.

[0060] At this time, the claw portions 21g of the engaging portions 21d of the supply / discharge portion 21b have a generally triangular shape that slopes toward the other claw portion 21g as it approaches the insertion portion main body 3f when viewed from the X-axis direction, for example, so that the claw portions 21g can easily climb over the outer portion of the engaged portion 21e of the cooler main body 21a. Therefore, the claw portions 21g of the engaging portions 21d of the supply / discharge portion 21b can easily engage with the engaged portion 21e of the cooler main body 21a.

[0061] <Third Embodiment> Fig. 10 is a simplified diagram showing the relationship between the battery module, cooler, and case of the energy storage device of the present embodiment. As shown in Fig. 10, energy storage device 31 of the present embodiment has substantially the same configuration as energy storage device 1 of embodiment 1, but communication portions 32a and 32b facing each other in the X-axis direction on the +Y-axis side of cooler 32 and the -Y-axis side of cooler 32, respectively, are joined by a fitting structure.

[0062] For example, the outer diameter of one communicating portion 32a may be smaller than the inner diameter of the other communicating portion 32b, and the one communicating portion 32a may be fitted into the other communicating portion 32b to join them. This makes it possible to easily connect the coolers 32 adjacent in the X-axis direction without using the connecting pipe 5.

[0063] In the above embodiment, the supply and discharge part is placed at a predetermined position on the cooler body by roughly contacting the case 4, but a contacted part may be separately provided to roughly contact the contact part of the supply and discharge part with the case 4.

[0064] Furthermore, the contact portion of the supply / discharge portion is not limited to the end surface of the insertion portion body, but may be configured to be able to come into contact with the contacted portion of the case 4. Furthermore, the contacted portion is not limited to the case 4, but may be any member of the electricity storage device.

[0065] In the above embodiment, the insertion part body of the supply and discharge part is cap-shaped, but for example, if the end on the Y-axis + side of the cooler body and the end on the Y-axis - side of the cooler body are blocked and a through hole through which the refrigerant passes is formed in the cooler body, the insertion part body may be ring-shaped so that the through hole and the communication part are continuous.

[0066] In short, the configurations of the cooler main body and supply / discharge unit in the above-mentioned embodiments are examples, and it is sufficient that the configuration allows the supply / discharge unit to be positioned at a predetermined position on the cooler main body by bringing the contact portion of the supply / discharge unit into approximate contact with the contacted portion of the power storage device.

[0067] The present disclosure is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the present disclosure. [Explanation of symbols]

[0068] 1. Energy storage device 2 Battery Module 3 Cooler, 3a Cooler body, 3b Supply / discharge part, 3c Distribution passage, 3d Insertion part, 3e Packing, 3f Insertion part body, 3g Communication part, 3h Penetration part, 3i Contact part 4 Case, 4a Contacted part, 4b EA part 5 Connecting pipe, 5a Connecting pipe body, 5b Packing 21 Cooler, 21a Cooler main body, 21b Supply / discharge part, 21c Groove part, 21d Engaging part, 21e Engaged part, 21f Projecting part, 21g Claw part 22 Gasket 31 Energy storage device 32 Cooler, 32a communication section, 32b communication section

Claims

1. A cooler mounted on an electricity storage device, a cooler body having a refrigerant flow passage formed therein; a supply / discharge part that communicates with the flow passage of the cooler body and is inserted into the cooler body to supply the refrigerant to the flow passage of the cooler body or to discharge the refrigerant from the flow passage of the cooler body; Equipped with The supply / discharge unit has a contact portion that contacts a contacted portion of the power storage device when the cooler is mounted on the power storage device, thereby positioning the supply / discharge unit at a predetermined position on the cooler body.

2. The cooler according to claim 1 , wherein the contacted portion of the power storage device is a case of the power storage device.

3. The cooler according to claim 1 or 2, wherein the supply / discharge portion has an insertion portion that is inserted into the cooler body, and a first packing member that is fixed to an inner circumferential surface of the insertion portion.

4. The cooler according to claim 3 , wherein the insertion portion and the first packing member are integrally formed from resin.

5. the cooler body is an extruded aluminum material, The cooler of claim 3 , wherein the insert is inserted into an end of the cooler body and has a cap-shaped insert body.

6. The cooler according to claim 1 or 2, wherein the supply / discharge portion has an engaging portion that engages with an engaged portion formed on the cooler body.

7. The cooler according to claim 6 , wherein the cooler body has a second packing member in contact with the supply / discharge portion.

8. An arrangement structure of a supply / discharge unit that is arranged in a cooler body of a cooler mounted on an electricity storage device to supply a refrigerant to the cooler body or to discharge the refrigerant from the cooler body, The supply and discharge unit is inserted into the cooler body, and when the cooler is mounted on the power storage device, the supply and discharge unit comes into contact with a contacted part of the power storage device and is positioned at a predetermined position on the cooler body.

9. An electricity storage device comprising the cooler according to claim 1 or 2.

10. The power storage device according to claim 9 , wherein the cooler is disposed between the battery modules.

11. the insertion portion has an insertion portion main body that is inserted into the cooler main body, and a communication portion that is provided on the insertion portion main body and communicates with a flow passage of the cooler main body, The power storage device according to claim 10 , wherein the communication portions of the supply and discharge portions of the coolers adjacent to each other across the battery module are joined together by a fitting structure.

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