Electricity storage device

Abstract

The invention provides a power storage device capable of preventing condensation water of a cooler from dripping to an electrode terminal arranged on a single storage battery. A power storage device (100) is provided with: a power storage module (10) including a battery cell (11); a cooler (30) disposed above the power storage module (10); and a heat insulating member (40). The battery cell (11) has one short side surface (11a), the other short side surface (11b), a positive electrode terminal (12) disposed on the one short side surface (11a), and a negative electrode terminal (13) disposed on the other short side surface (11b). The heat insulating member (40) is provided below the cooler (30) and above each of the positive electrode terminal (12) and the negative electrode terminal (13).

Description

Technical Field

[0001] The present disclosure relates to a power storage device. Background Art

[0002] Japanese Patent Application Publication No. 2023-529400 (Patent Document 1) discloses a battery pack comprising a plurality of battery cells, a tray, a heat evaporating plate, and cooling ducts. The battery cells are housed in a storage space within the tray. The heat evaporating plate covers the upper opening of the tray's storage space. The cooling ducts are located on the outer surface of the heat evaporating plate (the surface opposite the storage space).

[0003] [Patent Document 1]

[0004] Japanese Patent Publication No. 2023-529400

[0005] Although not described in Patent Document 1, electrode terminals may be provided on the side surfaces of the battery cells. In this case, it is thought that condensed water generated on the temperature equalizing plate (cooler) drips down and adheres to the electrode terminals. Summary of the Invention

[0006] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide a power storage device capable of suppressing condensed water in a cooler from dripping onto electrode terminals provided on a single battery cell.

[0007] The first aspect of the present disclosure relates to a power storage device comprising: a power storage module including at least one single battery cell; a cooler disposed above the power storage module; and a configuration component disposed below the cooler. The configuration component is a thermal insulation component. The at least one single battery cell has an upper surface, a lower surface, a side surface disposed between the upper and lower surfaces, and an electrode terminal disposed on the side surface. The thermal insulation component is disposed below the cooler and above the electrode terminal.

[0008] In the first embodiment of the presently disclosed power storage device, as described above, the heat insulating member is disposed below the cooler and above the electrode terminals. Thus, the heat insulating member is disposed between the cooler and the electrode terminals, thereby preventing condensation water from the cooler from dripping onto the electrode terminals.

[0009] Furthermore, the heat insulating member can prevent the electrode terminals from being excessively cooled by the cooler.

[0010] The second embodiment of the present disclosure relates to a power storage device comprising: a power storage module including at least one single battery cell; a cooler disposed above the power storage module; and a configuration component disposed below the cooler. The configuration component is a filling component. The at least one single battery cell comprises an upper surface, a lower surface, a side surface disposed between the upper surface and the lower surface, and an electrode terminal disposed on the side surface. The filling component fills the space below the cooler and above the electrode terminal. Furthermore, “the filling component fills the space” means “the filling component completely fills the space.”

[0011] In the second embodiment of the present disclosure, the filling member is disposed below the cooler and above the electrode terminals, as described above. Thus, since the filling member is disposed so as to shield the cooler from the electrode terminals, it is possible to suppress condensation water from the cooler from dripping onto the electrode terminals.

[0012] Furthermore, since the space above the electrode terminal is filled with the filling member, the amount of air in the space can be minimized, thereby minimizing the amount of condensed water adhering to the electrode terminal due to condensation.

[0013] The filling member may include a thermally conductive member. According to such a configuration, the electrode terminal can be efficiently cooled by the cooler through the thermally conductive member.

[0014] At least one storage battery cell may include a first storage battery cell and a second storage battery cell arranged adjacent to each other. The cooler may be arranged above the storage module, straddling the first storage battery cell and the second storage battery cell. The electrode terminals may include a first electrode terminal disposed on the side of the first storage battery cell on the side closer to the second storage battery cell, and a second electrode terminal disposed on the side of the second storage battery cell on the side closer to the first storage battery cell. The configuration component is disposed above each of the first and second electrode terminals. With this structure, the configuration component is arranged so as to shield the first and second electrode terminals from the cooler. As a result, condensation water from the cooler can be prevented from dripping onto the first and second electrode terminals.

[0015] At least one of the battery cells may be provided with an exhaust valve located below the electrode terminals. This configuration can prevent the flow of gas (fumes) exhausted from the exhaust valve (and the exhaust of gas from the exhaust valve) from being obstructed by the components, compared to a case where the exhaust valve is located above the electrode terminals (on the side where the components are located).

[0016] The at least one storage battery cell may include a plurality of storage batteries arranged in an arrangement direction. The placement member extends in the arrangement direction so as to straddle the plurality of storage batteries arranged in the arrangement direction. With this structure, the placement member is provided so as to cover the electrode terminals of each storage battery cell from above, thereby preventing condensation water from dripping onto the electrode terminals.

[0017] According to the present disclosure, it is possible to suppress condensed water in the cooler from dripping toward the electrode terminals provided on the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a diagram showing a vehicle equipped with the power storage device according to the first embodiment.

[0019] Figure 2 It is an exploded perspective view showing the structure of the power storage device according to the first embodiment.

[0020] Figure 3 It is a perspective view showing the structure of a single battery.

[0021] Figure 4 It is a cross-sectional view along the Y direction of the power storage device according to the first embodiment.

[0022] Figure 5 This is a first diagram showing a cross section of the power storage device according to the first embodiment, taken along the X direction.

[0023] Figure 6 This is a second diagram showing a cross section of the power storage device according to the first embodiment, taken along the X direction.

[0024] Figure 7 This is a first diagram showing a cross section of the power storage device according to the second embodiment, taken along the X direction.

[0025] Figure 8 This is a second diagram showing a cross section of the power storage device according to the second embodiment, taken along the X direction.

[0026] Figure 9 It is a cross-sectional view along the Y direction of the power storage device according to the second embodiment.

[0027] Figure 10 It is a cross-sectional view taken along the X direction of a power storage device according to a modification of the first embodiment.

[0028] Description of Reference Numerals

[0029] 10: Storage module; 11: Single storage battery; 11a: Short side; 11b: Short side; 11e: Upper surface; 11f: Lower surface; 12: Positive terminal (electrode terminal); 13: Negative terminal (electrode terminal); 14: Single cell exhaust valve (exhaust valve); 30, 130: Cooler; 40, 41, 42: Heat insulation component (configuration component); 100, 300: Storage device; 140: Thermal conductive component (filling component) (configuration component). DETAILED DESCRIPTION

[0030] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the drawings, identical or corresponding parts are denoted by the same reference numerals, and their description will not be repeated.

[0031] The following describes the embodiments and modifications of the present disclosure with reference to the accompanying drawings. In the following description, identical components and elements are denoted by the same reference numerals. Their names and functions are also identical. Therefore, their detailed description will not be repeated. In addition, the embodiments and modifications described below may be selectively combined as appropriate.

[0032] [First embodiment]

[0033] Reference Figures 1 to 6 , the power storage device 100 according to the first embodiment will be described. Figure 1 This is a side view schematically showing a vehicle 200 equipped with the power storage device 100 according to the first embodiment. In this specification, the X, Y, and Z directions are mutually orthogonal. For example, the X and Y directions are the front-to-back direction and the vehicle width direction, respectively, of the vehicle 200 when the power storage device 100 is mounted on the vehicle 200. The Z direction is the vertical (upper-down) direction. Furthermore, the Y direction is an example of an "arrangement direction" in this disclosure.

[0034] Reference Figure 1 The power storage device 100 is, for example, a device for storing electric power for driving a vehicle 200. The power storage device 100 is disposed on the underbody 210 (floor) of the vehicle 200. Examples of the vehicle 200 include hybrid vehicles, plug-in hybrid vehicles, fuel cell vehicles, and electric vehicles. Furthermore, the power storage device 100 may be provided in electrical equipment other than the vehicle (e.g., a stationary power storage device).

[0035] Figure 2 1 is an exploded perspective view showing the structure of the power storage device 100 according to the first embodiment. The power storage device 100 includes a power storage module 10 , a case 20 , a cooler 30 , a heat insulating member 40 , and a heat conducting material 50 .

[0036] The power storage module 10 includes a battery cell 10a and a battery cell 10b. Each of the battery cells 10a and 10b includes a plurality of single battery cells 11 ( Figure 3 ). The battery cell 10a and the battery cell 10b are arranged adjacent to each other in the X direction. The battery cell 10a is arranged on the X1 side of the battery cell 10b (for example, the front of the vehicle). A space S1 is formed between the battery cell 10a and the battery cell 10b. In addition, the number of battery cells may be three or more. In addition, the single battery cell 11 of the battery cell 10a is an example of the "first single battery cell" of the present disclosure. The single battery cell 11 of the battery cell 10b is an example of the "second single battery cell" of the present disclosure.

[0037] The case 20 houses the electricity storage module 10 . The case 20 includes an upper case 21 and a lower case 22 . The electricity storage module 10 is housed in a space formed by assembling the upper case 21 to the lower case 22 . The cooler 30 is also housed in the case 20 .

[0038] The cooler 30 is positioned above the battery module 10 (on the Z1 side). It is positioned so as to straddle the battery cells 10a and 10b. The cooler 30 covers the battery cells 10a and 10b and the space S1 from the Z1 side. The cooler 30 has a plate shape extending along the XY plane.

[0039] The heat insulating component 40 is arranged below the cooler 30. Specifically, the heat insulating component 40 is mounted on the lower surface 31 of the cooler 30 by an adhesive material or the like. The heat insulating component 40 is arranged in the space S1 when the cooler 30 is placed on the power storage module 10. In addition, as the heat insulating component 40, for example, there can be cited foamed plastic-based heat insulating materials such as extruded foamed polystyrene, fiber-based heat insulating materials such as glass wool such as cellulose fiber, and natural material-based heat insulating materials such as carbonized cork. The thermal conductivity of the heat insulating component 40 is, for example, lower than that of the heat conducting material 50. The thermal conductivity of the heat insulating component 40 can be, for example, lower than that of the metal (iron, aluminum, etc.) forming the housing 20 and the cooler 30.

[0040] The heat conductive material 50 is applied to the plurality of single battery cells 11 ( Figure 3 ) respective upper surfaces 11e( Figure 3 Therefore, thermally conductive material 50 is provided so as to cover battery cells 10a and 10b from above. That is, thermally conductive material 50 disposed on battery cell 10a and thermally conductive material 50 disposed on battery cell 10b are provided independently of each other. Thermally conductive material 50 is sandwiched between battery cell 10a and cooler 30, and between battery cell 10b and cooler 30. Thermally conductive material 50 is formed, for example, from a thermally conductive adhesive.

[0041] Figure 31 is a perspective view showing the structure of the unit battery 11. The unit battery 11 has a short side surface 11a, a short side surface 11b, a long side surface 11c, a long side surface 11d, an upper surface 11e, and a lower surface 11f.

[0042] The short side surfaces 11 a and 11 b are arranged in the direction X. Specifically, the short side surfaces 11 a and 11 b are one end surface and the other end surface of the battery cell 11 in the direction X, respectively.

[0043] The long side surface 11 c and the long side surface 11 d are arranged in the Y direction. Specifically, the long side surface 11 c and the long side surface 11 d are one end surface and the other end surface of the unit battery 11 in the Y direction, respectively.

[0044] The upper surface 11 e and the lower surface 11 f are arranged in the direction Z. Specifically, the upper surface 11 e and the lower surface 11 f are the end surface on the Z1 side and the end surface on the Z2 side of the battery cell 11 , respectively.

[0045] The short side surface 11 a , the short side surface 11 b , the long side surface 11 c , and the long side surface 11 d are respectively disposed between the upper surface 11 e and the lower surface 11 f , and connect the upper surface 11 e and the lower surface 11 f .

[0046] The battery cell 11 is formed elongated in the X direction. Specifically, the width W1 of the battery cell 11 in the X direction is greater than the width W2 of the battery cell 11 in the Y direction. Furthermore, the width W1 is greater than the height H of the battery cell 11 in the Z direction. Furthermore, the height H is greater than the width W2.

[0047] The battery cell 11 also has a positive electrode terminal 12 and a negative electrode terminal 13. The positive electrode terminal 12 is provided on the short side surface 11a. The negative electrode terminal 13 is provided on the short side surface 11b. The positive electrode terminal 12 is provided so as to protrude from the short side surface 11a in the X direction. The negative electrode terminal 13 is provided so as to protrude from the short side surface 11b in the X direction. The positive electrode terminal 12 and the negative electrode terminal 13 are each an example of an "electrode terminal" in the present disclosure.

[0048] The battery cell 11 also includes a battery cell exhaust valve 14 for exhausting gas from the battery cell 11. The battery cell exhaust valve 14 is configured to exhaust gas (fumes) from the battery cell 11 to the exterior of the battery cell 11 when the internal pressure of the battery cell 11 increases. The battery cell exhaust valve 14 is provided on the short side surface 11b of the battery cell 11. The battery cell exhaust valve 14 is an example of a "vent portion" as used herein.

[0049] The cell exhaust valve 14 is located below the negative electrode terminal 13. Specifically, the cell exhaust valve 14 is located near the lower surface 11f of the cell 11. Furthermore, the negative electrode terminal 13 is located below the positive electrode terminal 12. In other words, the cell exhaust valve 14 is located below the positive electrode terminal 12.

[0050] Figure 4 This is a side view of the battery cell 10a as viewed from the X2 side, and is also a cross-sectional view formed when the space S1 is cut along the Y direction. The power storage device 100 further includes an adhesive 60 and a plurality of bus bars 70. In addition, the structure of the battery cell 10b is also similar to that of the battery cell 10b. Figure 4 same.

[0051] like Figure 4 As shown, the cells 11 arranged with their short side faces 11a facing the X2 side (the space S1 side, the front side of the paper) and the cells 11 arranged with their short side faces 11b facing the X2 side are alternately arranged in the Y direction.

[0052] As a result, the positive terminals 12 and negative terminals 13 of adjacent storage cells 11 in the Y direction are arranged adjacent to each other. The bus bar 70 connects the adjacent positive terminals 12 and negative terminals 13 in the Y direction. Furthermore, the plurality of cell exhaust valves 14 are arranged in the Y direction. Although not shown in the figure, the plurality of cell exhaust valves 14 are also arranged in the Y direction on the X1 side (the back side of the drawing).

[0053] The adhesive material 60 is provided between the power storage module 10 and the lower case 22. The adhesive material 60 bonds the lower surface 11f of each of the plurality of unit batteries 11 to the lower case 22. Thus, the plurality of unit batteries 11 are fixed to the lower case 22.

[0054] Here, in the conventional power storage device, it is considered that condensed water generated in the cooler drips and adheres to the electrode terminals.

[0055] Therefore, in this embodiment, the heat insulating member 40 is provided below the cooler 30 and above each of the positive electrode terminal 12 and the negative electrode terminal 13. The heat insulating member 40 is provided at a position overlapping with each of the positive electrode terminal 12 and the negative electrode terminal 13 in the Z direction. Specifically, when the heat insulating member 40 is viewed from a point P away from each of the positive electrode terminal 12 and the negative electrode terminal 13 and the heat insulating member 40 in the Z1 direction, each of the positive electrode terminal 12 and the negative electrode terminal 13 is covered by the heat insulating member 40 and is not exposed. The heat insulating member 40 is an example of a "disposition member" in the present disclosure.

[0056] The heat insulating member 40 is in contact with the cooler 30 , and is separated from the positive electrode terminal 12 and the negative electrode terminal 13 .

[0057] The thermal insulation member 40 extends in the Y direction, spanning the plurality of battery cells 11 arranged in the Y direction. Thus, the thermal insulation member 40 is provided so as to extend in the Y direction along each of the battery cells 10a and 10b, thereby increasing the rigidity of each of the battery cells 10a and 10b. Specifically, the thermal insulation member 40 extends from the Y1-side end of each battery cell 10a and 10b to the Y2-side end.

[0058] The heat insulating member 40 has a thickness t1 in the Z direction. The thickness t1 is, for example, greater than the thickness t2 of the cooler 30 in the Z direction. Thus, compared to a case where the thickness t1 is less than the thickness t2, the heat insulating properties of the heat insulating member 40 can be ensured. Thus, the generation of condensation due to the cooling of moisture in the air of the space S1 can be suppressed. Furthermore, by making the thickness t1 of the heat insulating member 40 relatively thick, the amount of water droplets dripping from the cooler 30 absorbed by the heat insulating member 40 can be increased.

[0059] Figure 5 It is a cross-sectional view at a position where the short side surfaces 11a are opposite to each other. Figure 5 In the figure, the single battery cells 11 of each of the battery cells 10a and 10b are arranged in such a manner that the short side surface 11a faces the space S1 side. In addition, the short side surface 11a facing the space S1 side is an example of a "side surface" of the present disclosure. In addition, the positive terminal 12 provided on the short side surface 11a facing the space S1 side is an example of an "electrode terminal" of the present disclosure. In addition, the positive terminal 12 provided on the short side surface 11a facing the space S1 side (battery cell 10b side) of the single battery cell 11 of the battery cell 10a is an example of a "first electrode terminal" of the present disclosure. In addition, the positive terminal 12 provided on the short side surface 11a facing the space S1 side (battery cell 10a side) of the single battery cell 11 of the battery cell 10b is an example of a "second electrode terminal" of the present disclosure.

[0060] exist Figure 5 In the embodiment, the heat insulating member 40 is provided above the positive electrode terminal 12 of the battery cell 10a and the positive electrode terminal 12 of the battery cell 10b. Specifically, the heat insulating member 40 extends in the X direction so as to straddle the positive electrode terminal 12 of the battery cell 10a and the positive electrode terminal 12 of the battery cell 10b.

[0061] exist Figure 5 In the embodiment, the heat insulating member 40 is in close contact with the short side surfaces 11a of the individual storage batteries 11 on the battery cell 10a side and the short side surfaces 11a of the individual storage batteries 11 on the battery cell 10b side. This prevents the formation of gaps between the short side surfaces 11a and the heat insulating member 40. The heat insulating member 40 is sandwiched between adjacent storage batteries 11 in the X direction. The heat insulating member 40 may also be an elastic member.

[0062] Figure 6 The short side surfaces 11b are opposite to each other (for example, Figure 5 A cross-sectional view of the single storage battery 11 shown in FIG. 1 at the position of the single storage battery 11 adjacent to each other in the Y direction. Figure 6 In the embodiment, the single battery cells 11 of the battery cells 10a and 10b are arranged in such a manner that the short side surface 11b faces the space S1 side. In addition, the short side surface 11b facing the space S1 side is an example of a “side surface” in the present disclosure. In addition, the negative terminal 13 provided on the short side surface 11b facing the space S1 side is an example of an “electrode terminal” in the present disclosure. In addition, the negative terminal 13 provided on the short side surface 11b facing the space S1 side (battery cell 10b side) in the single battery cell 11 of the battery cell 10a is an example of a “first electrode terminal” in the present disclosure. In addition, the negative terminal 13 provided on the short side surface 11b facing the space S1 side (battery cell 10a side) in the single battery cell 11 of the battery cell 10b is an example of a “second electrode terminal” in the present disclosure.

[0063] exist Figure 6 In FIG, the heat insulating member 40 extends in the X direction so as to straddle the negative electrode terminal 13 on the battery cell 10 a side and the negative electrode terminal 13 on the battery cell 10 b side.

[0064] exist Figure 6 In the embodiment, the heat insulating member 40 is in close contact with the short side surfaces 11 b of the single storage battery 11 on the battery cell 10 a side and the short side surfaces 11 b of the single storage battery 11 on the battery cell 10 b side.

[0065] In addition, the arrangement of the single battery 11 is not limited to Figure 5 and Figure 6 In the example shown, the short side surface 11 a and the short side surface 11 b may be opposed to each other in the X direction.

[0066] As described above, in the first embodiment, the heat insulating member 40 is provided below the cooler 30 and above each of the positive electrode terminal 12 and the negative electrode terminal 13. Thus, the heat insulating member 40 is provided to isolate (separate) the cooler 30 from each of the positive electrode terminal 12 and the negative electrode terminal 13, thereby suppressing (blocking) condensed water from the cooler 30 from dripping onto each of the positive electrode terminal 12 and the negative electrode terminal 13.

[0067] Furthermore, the heat insulating member 40 can prevent the air above the electrode terminals ( 12 , 13 ) from being cooled by the cooler 30 , thereby preventing condensation from occurring in the air.

[0068] Furthermore, the heat insulating member 40 is provided above the electrode terminals (12, 13) of each of the battery cells 10a and 10b that protrude toward the space S1. Thus, in a configuration where the cooler 30 is arranged so as to straddle the battery cells 10a and 10b, it is possible to easily prevent condensation from adhering to the electrode terminals (12, 13) arranged in the space S1.

[0069] [Second embodiment]

[0070] Reference Figures 7 to 9 The second embodiment of the present disclosure will be described. In the second embodiment, a thermal conductive member 140 is used instead of the heat insulating member 40 of the first embodiment. The same components as those of the first embodiment are denoted by the same reference numerals and descriptions thereof will not be repeated.

[0071] like Figure 7 As shown, the power storage device 300 of the second embodiment includes a thermally conductive member 140. The thermally conductive member 140 can be made of the same material as the thermally conductive material 50, or a different material. Furthermore, the thermal conductivity of the thermally conductive member 140 is, for example, higher than that of the metal (iron, aluminum, etc.) forming the housing 20 and the cooler 30. The thermally conductive member 140 is formed, for example, from a gel-like thermally conductive material. Furthermore, the thermally conductive member 140 is an example of a "placement member" or "filler member" in the present disclosure.

[0072] The thermally conductive member 140 is disposed above the positive electrode terminal 12 on the battery cell 10a side and the positive electrode terminal 12 on the battery cell 10b side. Specifically, the thermally conductive member 140 fills the space S2 above the positive electrode terminal 12 within the space S1. In other words, the space S2 is completely filled with the thermally conductive member 140. Therefore, the thermally conductive member 140 is in contact with the positive electrode terminal 12 and short side surface 11a on the battery cell 10a side, the positive electrode terminal 12 and short side surface 11a on the battery cell 10b side, and the lower surface 31 of the cooler 30.

[0073] The thermally conductive member 140 is formed to extend in the Z direction. Specifically, the thermally conductive member 140 extends from the lower surface 31 of the cooler 30 to below the positive electrode terminal 12 .

[0074] like Figure 8As shown, the thermally conductive member 140 is disposed above the negative electrode terminal 13 on the battery cell 10a side and the negative electrode terminal 13 on the battery cell 10b side. Specifically, the thermally conductive member 140 fills the space S3 above the negative electrode terminal 13 within the space S1. In other words, the space S3 is completely filled with the thermally conductive member 140. Therefore, the thermally conductive member 140 contacts the negative electrode terminal 13 and short side surface 11b on the battery cell 10a side, the negative electrode terminal 13 and short side surface 11a on the battery cell 10b side, and the lower surface 31 of the cooler 30.

[0075] The thermally conductive member 140 extends from the lower surface 31 of the cooler 30 to the lower end 13a of the negative electrode terminal 13. The lower end 141 of the thermally conductive member 140 is located above the cell exhaust valve 14. Alternatively, the lower end 141 of the thermally conductive member 140 may be located above or below the lower end 13a of the negative electrode terminal 13. Furthermore, the position of the lower end 141 of the thermally conductive member 140 in the Z direction may vary depending on the position in the Y direction (e.g., depending on the position of the short side surface 11a and the position of the short side surface 11b).

[0076] like Figure 9 As shown, the thermally conductive member 140 is formed to extend in the Y direction so as to straddle the storage battery cells 11 arranged in the Y direction.

[0077] In addition, since the other structures are the same as those of the first embodiment, the description thereof will not be repeated.

[0078] As described above, in the second embodiment, the thermally conductive member 140 fills the spaces ( S2 , S3 ) above the electrode terminals ( 12 , 13 ). Thus, the thermally conductive member 140 can efficiently exchange heat between the cooler 30 and the electrode terminals ( 12 , 13 ).

[0079] Furthermore, since the spaces (S2, S3) are filled with the thermally conductive member 140, condensation of air in the spaces (S2, S3) can be suppressed. As a result, condensation water can be further suppressed from adhering to the electrode terminals.

[0080] [Modification]

[0081] In the first embodiment, the heat insulating member 40 is fixed to the cooler 30 , but the present disclosure is not limited thereto. The heat insulating member 40 may be fixed to the short side surfaces ( 11 a , 11 b ), for example.

[0082] In the first embodiment described above, an example of a heat insulating member 40 is shown, but the present disclosure is not limited thereto. For example, the space between the cooler 30 and the electrode terminals (12, 13) may be filled with a heat insulating filler (e.g., a gel-like heat insulating material). In this case, the heat insulating material is an example of a "filling member" in the present disclosure.

[0083] In the second embodiment, the space between the cooler 30 and the electrode terminals (12, 13) is filled with a gel-like thermally conductive member 140, but the present disclosure is not limited thereto. For example, a sheet-like or block-like thermally conductive member may be disposed in the space between the cooler 30 and the electrode terminals (12, 13).

[0084] In the first embodiment, the heat insulating member 40 is provided between the electrode terminals ( 12 , 13 ) on the space S1 side and the cooler 30 , but the present disclosure is not limited thereto. The heat insulating member is not limited to the space S1 .

[0085] For example, Figure 10 As shown in FIG. 1 , a heat insulating member 41 may be provided below the protruding portion 131 on the X1 side of the cooler 130. Figure 10 In the example shown, the heat insulating member 41 is arranged on the electrode terminal provided on the side opposite to the space S1 in the battery cell 10a ( Figure 10 In the case of the negative electrode terminal 13), a heat insulating member 42 may be provided below the protrusion 132 on the X2 side of the cooler 130. Figure 10 In the example shown, the heat insulating member 42 is arranged on the electrode terminal provided on the side opposite to the space S1 in the battery cell 10b ( Figure 10 (above the negative electrode terminal 13). Furthermore, protrusion 131 protrudes from battery cell 10a toward the X1 side. Protrusion 132 protrudes from battery cell 10b toward the X2 side. This modification can also be applied to the second embodiment. Furthermore, thermal insulation components 41 and 42 are each an example of a "configuration component" in this disclosure.

[0086] In the first and second embodiments described above, the examples in which the storage cells 11 (battery cells) are arranged in the X direction are shown, but the present disclosure is not limited thereto. The storage cells 11 (battery cells) may not be arranged in the X direction.

[0087] In the first and second embodiments, the plurality of battery cells 11 are arranged in the Y direction (vehicle width direction), but the present disclosure is not limited thereto. The plurality of battery cells 11 may be arranged in the X direction (vehicle front-rear direction).

[0088] In the first and second embodiments, the cell exhaust valve 14 is provided on the short side surface 11b of the cell 11, but the present disclosure is not limited thereto. For example, the cell exhaust valve may be provided on the short side surface 11a or the bottom surface 11f of the cell 11.

[0089] In the first and second embodiments, the positive electrode terminal 12 and the negative electrode terminal 13 are provided on the short side surface 11a and the short side surface 11b, respectively. However, the present disclosure is not limited thereto. The positive electrode terminal 12 and the negative electrode terminal 13 may be provided on either the short side surface 11a or the short side surface 11b, respectively.

[0090] In the first and second embodiments, the positive electrode terminal 12 and the negative electrode terminal 13 are arranged at different heights in the Z direction, but the present disclosure is not limited thereto. The positive electrode terminal 12 and the negative electrode terminal 13 may be arranged at the same height in the Z direction.

[0091] While the first and second embodiments described above illustrate examples in which the cell exhaust valves 14 are located below the positive electrode terminal 12 and the negative electrode terminal 13, the present disclosure is not limited thereto. For example, if all the cell exhaust valves 14 are provided on the short side surfaces (11a, 11b) opposite the space S1, the cell exhaust valves 14 may be located at the same position as the positive electrode terminal 12 or the negative electrode terminal 13 in the Z direction, or above them.

[0092] In the first embodiment described above, the heat insulating member 40 is shown as extending in the Y direction so as to straddle the electrode terminals (12, 13) on the battery cell 10a side and the electrode terminals (12, 13) on the battery cell 10b side. However, the present disclosure is not limited to this. The heat insulating member provided above the electrode terminals (12, 13) on the battery cell 10a side and the heat insulating member provided above the electrode terminals (12, 13) on the battery cell 10b side may be provided separately. This modified example can also be applied to the second embodiment described above.

[0093] While the first embodiment described above illustrates an example in which the heat insulating member 40 extends in the Y direction across a plurality of storage battery cells 11 arranged in the X direction, the present disclosure is not limited thereto. Alternatively, a configuration may be employed in which a plurality of heat insulating members provided for each storage battery cell 11 are arranged in the Y direction. This modification can also be applied to the second embodiment described above.

[0094] Furthermore, the configurations (processing) of the above-described embodiment and each of the above-described modifications may be combined with each other.

[0095] The embodiments disclosed herein are illustrative in all respects and should not be construed as restrictive. The scope of the present disclosure is not indicated by the description of the embodiments described above but by the technical solutions, and is intended to include all modifications within the meaning and scope equivalent to the technical solutions.

Claims

1. A power storage device, wherein: have: A power storage module comprising at least one single battery; a cooler disposed above the power storage module; and A configuration component is configured below the cooler, The configuration component is a heat insulation component, The at least one unit battery has an upper surface, a lower surface, a side surface disposed between the upper surface and the lower surface, and an electrode terminal disposed on the side surface. The heat insulating component is disposed below the cooler and above the electrode terminal.

2. A power storage device, wherein: have: A power storage module comprising at least one single battery; a cooler disposed above the power storage module; and A configuration component is configured below the cooler, The configuration component is a filling component, The at least one unit battery has an upper surface, a lower surface, a side surface disposed between the upper surface and the lower surface, and an electrode terminal disposed on the side surface. The filling member fills a space below the cooler and above the electrode terminal.

3. The power storage device according to claim 2, wherein The filling member includes a thermally conductive member.

4. The power storage device according to any one of claims 1 to 3, wherein The at least one single battery cell includes a first single battery cell and a second single battery cell arranged adjacent to each other. The cooler is arranged above the power storage module so as to straddle the first single storage battery and the second single storage battery. The electrode terminals include: a first electrode terminal provided on the side of the first unit battery that is close to the second unit battery; and a second electrode terminal provided on the side of the second unit battery that is close to the first unit battery. The configuration component is provided above each of the first electrode terminal and the second electrode terminal.

5. The power storage device according to any one of claims 1 to 3, wherein The at least one unit battery is provided with a gas exhaust valve located below the electrode terminal.

6. The power storage device according to any one of claims 1 to 3, wherein The at least one single storage battery includes a plurality of single storage batteries arranged in an arrangement direction, The arrangement member extends in the arrangement direction so as to straddle the plurality of storage batteries arranged in the arrangement direction.

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