JP6504014B2 - Storage pack - Google Patents

Description

  The present invention relates to a storage pack.

  There is known a cooling structure in which a deformable heat transfer sheet is provided between a cooling surface of a battery module in which a plurality of battery cells are stacked and a cooling plate (see, for example, Patent Document 1).

JP, 2013-122817, A

  In the cooling structure, for example, the battery cell may expand or contract in the stacking direction of the battery cell due to charge and discharge of the battery cell. In such a case, a force in the stacking direction of the battery cells may be applied to the heat transfer sheet, and the heat transfer sheet may be shifted in the stacking direction of the battery cells. When the heat transfer sheet is displaced, peeling occurs at the interface between the cooling surface of the battery module and the heat transfer sheet or at the interface between the heat transfer sheet and the cooling plate. When peeling occurs, the contact area between the cooling surface of the battery module and the heat transfer sheet or the contact area between the heat transfer sheet and the cooling plate decreases. In addition, when the force applied to the heat transfer sheet is large, the heat transfer sheet may be cracked or broken. As a result, the heat dissipation from the battery module to the cooling plate is reduced.

  An object of one aspect of the present invention is to provide a storage pack in which a force applied to a heat transfer portion between a storage module and a fixed member to which the storage module is fixed is suppressed.

  A storage pack according to one aspect of the present invention includes a storage module including a plurality of storage cells arranged in a first direction and a heat transfer member connected to each of the plurality of storage cells, and the storage module being fixed A fixed member to be fixed, a heat transfer portion disposed between the heat transfer member and the fixed member, and a heat transfer member disposed between the heat transfer member and the fixed member, along the first direction. And a sliding member having a sliding surface capable of sliding.

  In this storage pack, even if the storage cell expands or contracts along the first direction, the force in the first direction generated by the expansion or contraction of the storage cell is caused by the sliding surface of the sliding member along the first direction. Absorbed by sliding. Therefore, the force in the first direction applied to the heat transfer portion is reduced.

  The sliding member may be disposed between the heat transfer portion and the fixed member.

  In this case, the force in the first direction is absorbed by the sliding of the sliding surface between the heat transfer portion and the fixed member.

  The sliding member may be disposed between the heat transfer portion and the heat transfer member.

  In this case, the force in the first direction is absorbed by the sliding of the sliding surface between the heat transfer portion and the heat transfer member.

  The heat transfer portion has a first portion extending in the first direction, and a second portion extending in the first direction and disposed to face the first portion. The sliding member may be disposed between the first portion and the second portion.

  In this case, the force in the first direction is absorbed by the sliding of the sliding surface between the first portion and the second portion.

  The sliding member has a first portion having a first sliding surface slidable along the first direction, and is slidable along the first direction and faces the first sliding surface. And a second portion having a second sliding surface disposed.

  In this case, the force in the first direction is absorbed by the sliding of the first sliding surface and the second sliding surface between the first sliding surface and the second sliding surface. The first sliding surface and the second sliding surface are separated from other elements such as the heat transfer portion, the heat transfer member, or the fixed member, and thus are not easily affected by the other elements. Therefore, it is easy to control so that desired sliding can be obtained.

  The sliding member may include a carbon sheet.

  The carbon sheet has a sliding surface. Further, since the thermal conductivity of the carbon sheet is relatively high, the heat dissipation from the heat transfer member to the fixed member is enhanced.

  According to one aspect of the present invention, there can be provided a storage pack in which the force applied to the heat transfer portion between the storage module and the fixed member to which the storage module is fixed is suppressed.

It is a perspective view which shows the electrical storage pack which concerns on 1st Embodiment typically. It is a perspective view which shows typically the electrical storage module contained in the electrical storage pack of FIG. It is a disassembled perspective view which shows typically the cell holder contained in the electrical storage module of FIG. 2, an electrical storage cell, and a heat-transfer plate. It is sectional drawing of the electrical storage pack along the IV-IV line of FIG. It is sectional drawing of the electrical storage pack which concerns on 2nd Embodiment. It is sectional drawing of the electrical storage pack which concerns on 3rd Embodiment. It is sectional drawing of the sliding member which concerns on a modification. It is sectional drawing of the electrical storage pack which concerns on a modification. It is sectional drawing of the electrical storage pack which concerns on a modification. It is sectional drawing of the electrical storage pack which concerns on a modification.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same reference numerals are used for the same or equivalent elements, and the overlapping description is omitted.

First Embodiment
FIG. 1 is a perspective view schematically showing the storage pack according to the first embodiment. An XYZ orthogonal coordinate system is shown in FIG. A storage pack 10 shown in FIG. 1 has a housing 11 made of metal, for example. A plurality of (four in this example) storage modules 21 arranged in the Y-axis direction (first direction) and the Z-axis direction (second direction intersecting the first direction) are accommodated in the housing 11. There is. The housing 11 has a rectangular box shape, and has a rectangular flat plate bottom plate 12, a rectangular flat plate side wall 13 erected from the periphery of the bottom plate 12, and a rectangular flat plate shape closing an opening surrounded by the side wall 13. And the top plate 14 of the

  FIG. 2 is a perspective view schematically showing a storage module included in the storage pack of FIG. The same XYZ orthogonal coordinate system as FIG. 1 is shown by FIG. The storage module 21 shown in FIG. 2 has a plurality of storage cells 23 (for example, a secondary battery such as a lithium ion secondary battery and a nickel hydrogen storage battery or an electric double layer capacitor) arranged in the Y-axis direction. . The storage cells 23 are arranged in parallel in a state of being held by the cell holder 22. The storage module 21 includes a heat transfer plate 41 (see FIG. 3) connected to each of the plurality of storage cells 23. The heat transfer plate 41 is an example of a heat transfer member. The heat transfer plate 41 is made of metal, for example. Heat transfer plate 41 may be in direct contact with storage cell 23 or may be connected to storage cell 23 via another heat transfer member.

  A pair of end plates 25 is provided at both ends in the direction in which the storage cells 23 are arranged in the storage module 21 (the Y-axis direction). The storage cell 23 is restrained in the Y-axis direction by the pair of end plates 25. A bolt B is inserted into both end plates 25, 25. The bolt B is inserted from one end plate 25 toward the other end plate 25 and screwed to the nut N at a position where the other end plate 25 is inserted. The end plates 25 are provided with brackets 24 respectively. The storage module 21 is fixed to the side wall 13 by fixing the brackets 24 and 24 to the side wall 13. In the first embodiment, the side wall 13 of the housing 11 is a fixed member to which the storage module 21 is fixed. The side wall 13 extends along the Y-axis direction and the Z-axis direction.

  FIG. 3 is an exploded perspective view schematically showing a cell holder, a storage cell and a heat transfer plate included in the storage module of FIG. FIG. 3 shows the same XYZ orthogonal coordinate system as in FIGS. 1 and 2. The cell holder 22 shown in FIG. 3 has a first covering portion 31, a second covering portion 32, a third covering portion 33, a fourth covering portion 34, and a pair of leg portions 36, 36. There is.

  The first covering portion 31 is formed in a rectangular flat plate shape and covers the bottom of the storage cell 23. The second covering portion 32 and the third covering portion 33 are portions which are erected from both ends in the longitudinal direction (X-axis direction) of the first covering portion 31. The second covering portion 32 and the third covering portion 33 are formed in a rectangular flat plate shape, and cover the side surface of the storage cell 23. The fourth covering portion 34 is formed in a rectangular flat plate shape, and is a portion covering a part of one main surface (surface orthogonal to the thickness direction) of the storage cell 23. The fourth covering portion 34 has a first end 32a (an end opposite to the end where the first covering portion 31 is provided) in the longitudinal direction (Z-axis direction) of the second covering portion 32, and a third covering It is connected to the first end 33a (the end opposite to the end where the first covering portion 31 is provided) in the longitudinal direction (Z-axis direction) of the portion 33. The thickness direction of the fourth covering portion 34 coincides with the arranging direction (Y-axis direction) of the storage cells 23, and the longitudinal direction (X-axis direction) corresponds to the opposing direction of the second covering portion 32 and the third covering portion 33 It is arranged to coincide with the X axis direction). A region surrounded by the first covering portion 31, the second covering portion 32, and the third covering portion 33 is a housing portion S in which the storage cell 23 is housed.

  The first ends 32a and 33a in the longitudinal direction (Z-axis direction) of the second covering portion 32 and the third covering portion 33 are provided continuously with the respective covering portions 32 and 33, and the longitudinal directions of the respective covering portions 32 and 33 A rectangular flat projecting portion 35 is provided. Further, at the second end portions 32c and 33c in the longitudinal direction of the second covering portion 32 and the third covering portion 33, leg portions 36 having a square pillar shape are provided.

  The heat transfer plate 41 is formed by bending a metal plate material into an L shape, and a rectangular flat plate-like main body 42 and a rectangular flat plate-like curved portion 43 bent at a right angle from one end of the main body 42 in the longitudinal direction. And. The main body 42 is provided in the housing portion S in a state of being adjacent to the storage cell 23 in the thickness direction of the storage cell 23. The bent portion 43 covers the outer surface of the third covering portion 33 (the surface on the side opposite to the housing portion S in the surface in the thickness direction of the third covering portion 33).

  FIG. 4 is a cross-sectional view of the storage pack along the line IV-IV in FIG. The storage module 21 shown in FIG. 4 is fixed to the side wall 13 such that the bent portion 43 of the heat transfer plate 41 faces the side wall 13 of the housing 11. A heat transfer layer 51 (TIM layer: Thermal Interface Material layer) and sliding surfaces 52a and 52b slidable along the Y-axis direction are provided between the bent portion 43 of the heat transfer plate 41 and the side wall 13 A sliding member 52 is provided. In the first embodiment, the sliding member 52 is disposed between the heat transfer layer 51 and the side wall 13 of the housing 11.

  The heat transfer layer 51 is an example of a heat transfer unit. The heat transfer layer 51 extends in the Y-axis direction and the Z-axis direction. The heat transfer layer 51 covers the surface (heat transfer surface) of the bent portion 43 of the heat transfer plate 41. The heat transfer layer 51 is in close contact with the bent portion 43 of the heat transfer plate 41 and is in contact with the sliding surface 52 b of the sliding member 52. The heat transfer layer 51 has elasticity. The heat transfer layer 51 may be one or more heat transfer sheets, or may be one or more layers obtained by curing a liquid heat transfer material.

  The sliding member 52 extends in the Y-axis direction and the Z-axis direction. The thickness (the size in the X-axis direction) of the sliding member 52 is smaller than the thickness of the heat transfer layer 51. The thickness of the sliding member 52 is, for example, 0.05 mm to 1 mm. The sliding surface 52 a of the sliding member 52 is in contact with the side wall 13 of the housing 11. The sliding surface 52 b of the sliding member 52 is in contact with the heat transfer layer 51. The sliding surfaces 52a and 52b are surfaces having a small coefficient of friction. One of the sliding surfaces 52a and 52b may not be slidable. For example, the sliding member 52 may have a non-slidable surface instead of the sliding surface 52b. In that case, the non-slidable surface adheres to the heat transfer layer 51. The sliding surfaces 52a, 52b may be slidable in any direction in the YZ plane. For example, the sliding surfaces 52a and 52b may be slidable along the Z-axis direction. In this case, since the sliding surfaces 52a and 52b can also absorb the force in the Z-axis direction, the force in the Z-axis direction applied to the heat transfer layer 51 is suppressed.

  The sliding member 52 is, for example, a sliding sheet such as a slip sheet or a slide sheet. Examples of the sliding sheet include release paper. The release paper comprises a silicone resin layer provided on one or both sides of the substrate. For example, the sliding member 52 includes a silicone resin layer having a sliding surface 52a, and a base material having a non-slidable surface instead of the sliding surface 52b. In that case, the non-slidable surface adheres to the heat transfer layer 51.

  The sliding member 52 may include a carbon sheet. The carbon sheet has sliding surfaces 52a and 52b. The sliding member 52 may include a base material that supports the carbon sheet. For example, the sliding member 52 may include a carbon sheet having a sliding surface 52a and a base material having a non-slidable surface instead of the sliding surface 52b. As a carbon sheet, a graphite sheet etc. are mentioned, for example. The thermal conductivity of the carbon sheet is, for example, 700 to 1950 W / (m · K). The thickness of the carbon sheet is, for example, 0.05 mm to 1 mm.

  The size of the sliding member 52 viewed from the thickness direction of the heat transfer layer 51 (X axis direction, ie, the third direction intersecting the first direction and the second direction) is the same as the size of the heat transfer layer 51 or It is larger than the size of the heat transfer layer 51. In this case, the entire main surface (surface parallel to the YZ plane) of the heat transfer layer 51 can be covered by the sliding member 52.

  An elastic member (for example, an elastic member 26 in FIG. 10) having elasticity in the Y-axis direction may be disposed between one end plate 25 and the storage cell 23. The elastic member can absorb the force in the Y-axis direction generated by the expansion or contraction of the storage cell 23.

  In the storage pack 10 of the first embodiment, the storage cells 23 may expand or contract along the Y-axis direction due to, for example, charge and discharge of the storage pack 10. In this case, a force in the Y-axis direction is generated, but the force in the Y-axis direction is absorbed by the sliding surfaces 52a and 52b of the sliding member 52 sliding along the Y-axis direction. Therefore, the force in the Y-axis direction applied to the heat transfer layer 51 is reduced. As a result, peeling of the heat transfer layer 51 from the bent portion 43 of the heat transfer plate 41 is suppressed. In addition, cracking or breakage of the heat transfer layer 51 is suppressed. Therefore, the fall of the heat dissipation from the bending part 43 of the heat-transfer plate 41 to the side wall 13 of the housing | casing 11 is suppressed. Thus, the life of the storage pack 10 is improved. The force in the Y-axis direction increases as the distance from the end plates 25 in the Y-axis direction increases. Therefore, the force in the Y-axis direction is maximum at the center of the storage module 21 in the Y-axis direction.

  Moreover, in the first embodiment, since the sliding member 52 is disposed between the heat transfer layer 51 and the side wall 13 of the housing 11, Y between the heat transfer layer 51 and the side wall 13 of the housing 11 The axial force is absorbed by the sliding of the sliding surfaces 52a, 52b. In addition, since the distance between the side wall 13 of the housing 11 and the bending portion 43 of each heat transfer plate 41 varies, unevenness may be formed on the surface of the bending portion 43 on the heat transfer layer 51 side. is there. Even in such a case, the main surface on the side of the bent portion 43 in the heat transfer layer 51 absorbs the unevenness, and the surface on the side of the sliding member 52 in the heat transfer layer 51 is flat. Further, the surface of the side wall 13 of the housing 11 on the sliding member 52 side is also a flat surface. Therefore, the sliding member 52 can be easily inserted between the heat transfer layer 51 and the side wall 13 of the housing 11. In addition, the sliding member 52 is unlikely to be wrinkled.

  When the sliding member 52 includes a carbon sheet, the heat conductivity of the carbon sheet is relatively high, so the heat dissipation from the heat transfer plate 41 to the side wall 13 of the housing 11 is enhanced.

Second Embodiment
FIG. 5 is a cross-sectional view of the storage pack according to the second embodiment. The same XYZ orthogonal coordinate system as FIG. 4 is shown by FIG. Storage pack 10a shown in FIG. 5 includes the same components as storage pack 10 shown in FIGS. 1 and 4 except that the positional relationship between heat transfer layer 51 and sliding member 52 in the X-axis direction is different. In the storage pack 10 a, the sliding member 52 is disposed between the heat transfer layer 51 and the bent portion 43 of the heat transfer plate 41. The heat transfer layer 51 is in close contact with the side wall 13 of the housing 11 and is in contact with the sliding surface 52 a of the sliding member 52. The sliding surface 52 b of the sliding member 52 is in contact with the bent portion 43 of the heat transfer plate 41.

  In the second embodiment, the same effects as those of the first embodiment can be obtained. In addition, the force in the Y-axis direction is absorbed by the sliding of the sliding surfaces 52 a and 52 b between the heat transfer layer 51 and the bent portion 43 of the heat transfer plate 41.

Third Embodiment
FIG. 6 is a cross-sectional view of the storage pack according to the third embodiment. The same XYZ orthogonal coordinate system as FIG. 4 is shown by FIG. Storage pack 10b shown in FIG. 6 has storage pack 10 shown in FIGS. 1 and 4 except that the positional relationship between heat transfer layer 51 and sliding member 52 in the X-axis direction and the structure of heat transfer layer 51 are different. With the same components as In storage pack 10b, heat transfer layer 51 includes a first portion 511 extending along the Y-axis direction, and a second portion 512 extending along the Y-axis direction and disposed opposite to first portion 511. have. The sliding member 52 is disposed between the first portion 511 and the second portion 512. The first portion 511 is in close contact with the side wall 13 of the housing 11 and in contact with the sliding surface 52 a of the sliding member 52. The second portion 512 is in contact with the sliding surface 52 b of the sliding member 52 and is in close contact with the bending portion 43 of the heat transfer plate 41. Even if the plurality of sliding members 52 are disposed between the first portion 511 and the second portion 512, and portions extending along the Y-axis direction of the heat transfer layer 51 are disposed between the respective sliding members 52. Good. In this case, the sliding members 52 and the portions of the heat transfer layer 51 extending along the Y-axis direction are alternately arranged along the X-axis direction.

  In the third embodiment, the same effects as those of the first and second embodiments can be obtained. In addition, the force in the Y-axis direction is absorbed by the sliding of the sliding surfaces 52a and 52b between the first portion 511 and the second portion 512.

(Modification of sliding member)
FIG. 7 is a cross-sectional view of a sliding member according to a modification. The sliding member 520 shown in FIG. 7 has a first portion 521 having a first sliding surface 521 a slidable along the Y-axis direction, and is slidable along the Y-axis direction and also has a first sliding surface. And a second portion 522 having a second sliding surface 522a disposed opposite to the moving surface 521a. The first portion 521 and the first portion 521 extend along the Y-axis direction. The sliding member 520 may be used instead of the sliding member 52 in the storage pack 10, 10a, 10b of the first to third embodiments. In this case, the first portion 521 is in close contact with the side wall 13 of the housing 11. The second portion 522 is in close contact with the bent portion 43 of the heat transfer plate 41.

  The sliding member 520 extends in the Y-axis direction and the Z-axis direction. The thickness (the size in the X-axis direction) of the sliding member 520 is smaller than the thickness of the heat transfer layer 51. The thickness of the sliding member 520 is, for example, 0.05 mm to 1 mm. The first sliding surface 521a and the second sliding surface 522a may be slidable in any direction in the YZ plane. For example, the first sliding surface 521a and the second sliding surface 522a may be slidable along the Z-axis direction. In this case, since the first sliding surface 521 a and the second sliding surface 522 a can also absorb the force in the Z-axis direction, the force in the Z-axis direction applied to the heat transfer layer 51 is suppressed.

  The sliding member 520 is, for example, a sliding sheet such as a slip sheet or a slide sheet. The sliding member 520 includes, for example, two sheets of peeling paper in which the peeling surfaces are arranged to face each other. For example, the sliding member 520 includes a silicone resin layer having a first sliding surface 521a, a first portion 521 as a first base material, a silicone resin layer having a second sliding surface 522a, and a second base material. And a second portion 522.

  The sliding member 520 may include a plurality of carbon sheets. In this case, each of the first portion 521 and the second portion 522 is a carbon sheet. The two carbon sheets each have a first sliding surface 521a and a second sliding surface 522a. A first base material that supports the first carbon sheet may be provided on the surface of the first portion 521 opposite to the first sliding surface 521a. Similarly, on the surface of the second portion 522 opposite to the second sliding surface 522a, a second base material may be provided to support the second carbon sheet.

  In the sliding member 520, the force in the Y-axis direction is absorbed by the sliding of the first sliding surface 521a and the second sliding surface 521b between the first sliding surface 521a and the second sliding surface 521b. . Since the first sliding surface 521 a and the second sliding surface 521 b are separated from the heat transfer layer 51, the heat transfer plate 41, or other elements such as the side wall 13 of the housing 11, they are not easily affected by other elements. . Therefore, it is easy to control the sliding between the first sliding surface 521a and the second sliding surface 521b to a desired sliding.

  The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited to the above embodiments. Each embodiment and modification may be combined arbitrarily.

  For example, in the first embodiment, the additional sliding member 52 may be disposed between the heat transfer layer 51 and the bending portion 43 of the heat transfer plate 41. In this case, in addition to the effects of the first embodiment, the effects of the second embodiment can also be obtained. In such a case, the sliding member 520 may be used instead of the sliding member 52.

  In the third embodiment, a further sliding member 52 may be disposed between the first portion 511 and the side wall 13 of the housing 11. In this case, in addition to the effects of the third embodiment, the effects of the first embodiment can also be obtained. In such a case, the sliding member 520 may be used instead of the sliding member 52.

  Furthermore, in the third embodiment, a further sliding member 52 may be disposed between the second portion 512 and the bending portion 43 of the heat transfer plate 41. In this case, in addition to the effects of the third embodiment, the effects of the second embodiment can also be obtained. In such a case, the sliding member 520 may be used instead of the sliding member 52.

  In the first to third embodiments or their modifications, the bracket 24 and the end plate 25 have been described by way of an example in which they are constituted by separate members, but as shown in FIG. The end plate 125 formed in the above may be used.

  In the first to third embodiments or their modifications, for example, as shown in FIGS. 4 to 6, the heat transfer layer 51 and the sliding member 52 are between the bracket 24 and the side wall 13 of the housing 11. For example, as shown in FIG. 9, the heat transfer layer 51 and the sliding member 52 are formed by bending the bent portion 43 of the heat transfer plate 41 and the side wall 13. It may be arranged only between That is, the heat transfer layer 51 and the sliding member 52 may not be disposed between the end plate 125 and the side wall 13. Although the end plate 125 in which the bracket is integrally formed is used in FIG. 9, for example, as shown in FIGS. 4 to 6, the bracket 24 and the end plate 25 may be configured by separate members. .

  In the first to third embodiments or their modifications, an insulating elastic member may be disposed between the end plate 25 or 125 and the storage cell 23. For example, as shown in FIG. 10, an insulating elastic member 26 may be disposed between one end plate 125 and the storage cell 23. Elastic member 26 can contact storage cell 23 without heat transfer plate 41. Although the end plate 125 in which the bracket is integrally formed is used in FIG. 10, for example, as shown in FIGS. 4 to 6, the bracket 24 and the end plate 25 may be configured by separate members. .

  The elastic member 26 can absorb the expansion of the storage cell 23 in the Y-axis direction, and can suppress the size change in the arrangement direction of the storage module 21. Thereby, even if storage cell 23 expands in the Y-axis direction, displacement of end plate 125 (or bracket 24 and end plate 25) relative to side wall 13 in the Y-axis direction can be suppressed. On the other hand, storage cell 23 may be displaced in the Y-axis direction with respect to sidewall 13 due to expansion. Even in this case, the heat transfer layer 51 peels off from the side wall 13 because the force in the Y-axis direction is absorbed by the sliding surfaces 52a and 52b of the sliding member 52 sliding along the Y-axis direction. Can be suppressed.

  Furthermore, since the end plate 125 (or the bracket 24 and the end plate 25) is more stable when fixed in contact with the side wall 13, for example, as shown in FIG. 10, the end plate 125 (or the bracket 24 and the end plate Preferably, the heat transfer layer 51 and the sliding member 52 are not disposed between the surface 25 and the side wall 13.

  Further, the elastic member 26 can ensure insulation between the storage cell 23 and the end plate 125 (or the end plate 25). Thereby, the insulation between the storage module 21 and the side wall 13 is secured without arranging the insulating member between the end plate 125 (or the bracket 24) and the side wall 13. According to this configuration, the operation of fastening through the insulating member or the design for maintaining the fastening strength can be omitted, so that the operation of fastening the end plate 125 or the bracket 24 to the side wall 13 is easy. Become.

  10, 10a, 10b: electric storage pack, 13: side wall (fixed member), 21: electric storage module, 23: electric storage cell, 41: heat transfer plate (heat transfer member), 51: heat transfer layer (heat transfer portion), 52, 520: Sliding member, 52a, 52b: Sliding surface, 511: First part, 512: Second part, 521: First part, 521a: First sliding surface, 522: Second part, 522a ... Second sliding surface.

Claims (5)

A storage module comprising a plurality of storage cells arranged in a first direction, and a heat transfer member connected to each of the plurality of storage cells;
A fixed member to which the storage module is fixed;
A heat transfer portion disposed between the heat transfer member and the fixed member;
A sliding member disposed between the heat transfer member and the fixed member and having a sliding surface slidable along the first direction;
Equipped with
The heat transfer portion has a first portion extending in the first direction, and a second portion extending in the first direction and disposed to face the first portion. ,
The storage pack, wherein the sliding member is disposed between the first portion and the second portion. A storage module comprising a plurality of storage cells arranged in a first direction, and a heat transfer member connected to each of the plurality of storage cells;
A fixed member to which the storage module is fixed;
A heat transfer portion disposed between the heat transfer member and the fixed member;
A sliding member disposed between the heat transfer member and the fixed member and having a sliding surface slidable along the first direction;
Equipped with
The sliding member has a first portion having a first sliding surface slidable along the first direction, and is slidable along the first direction and faces the first sliding surface. And a second portion having a second sliding surface disposed. The sliding member, the said heat recovery area is positioned between the member to be fixed, the electricity storage pack according to claim 1 or 2. The power storage pack according to any one of claims 1 to 3 , wherein the sliding member is disposed between the heat transfer portion and the heat transfer member. The storage pack according to any one of claims 1 to 4 , wherein the sliding member includes a carbon sheet.

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