JP6635030B2 - Storage cell pack - Google Patents

Description

  The present invention relates to a power storage cell pack in which a plurality of cell rows are held in a cell row holder.

  In WO2013-129574 (Patent Document 1), both ends of six cylindrical electrical storage cells (specifically, lithium ion battery cells) electrically connected and arranged in parallel are held by a pair of cell holders, respectively. A cell module is disclosed.

WO2013-129574

  In the cell module disclosed in Patent Document 1, since the outer can of the cylindrical electricity storage cell is exposed, the cooling performance is high when air cooling is performed. However, considering the mechanical strength, there is a limit to increasing the number of cells. Also, exposing the battery can has a problem in that handling is troublesome in terms of safety.

  An object of the present invention is to provide a power storage cell pack that can secure mechanical strength corresponding to the number of cells, can enhance safety, and can be easily cooled.

  The power storage cell pack of the present invention is configured such that a plurality of cylindrical power storage cells are juxtaposed at intervals in a second direction orthogonal to the first direction in a state where the longitudinal direction is directed to the first direction. With the plurality of cell rows and a pair of electrodes provided on both sides in the longitudinal direction of the cylindrical power storage cell being exposed, the cell rows are spaced in a third direction orthogonal to the first and second directions. Use a cell row holder that holds open. Further, the power storage cell pack of the present invention has a first connection structure for electrically connecting a plurality of electrodes exposed from one side in the first direction of the cell row holder, and a second connection side in the first direction of the cell row holder. Connection structure that electrically connects the plurality of electrodes exposed from the first, a first cover member that entirely covers the first connection structure, and a second cover that entirely covers the second connection structure And a member. Furthermore, the power storage cell pack of the present invention includes a plurality of exterior component members that constitute an exterior in combination with the first cover member and the second cover member. In the present invention, in particular, the structure is defined such that the plurality of exterior components form an exterior having an inlet and an outlet through which air flows in the interior of the exterior in the second direction or the third direction. .

  According to the present invention, the mechanical strength and safety of the power storage cell pack are ensured by the cell row holder, the first and second cover members, and the exterior constituent members, and then the cylindrical power storage cell is mounted inside the exterior. The air can flow in a second direction or a third direction orthogonal to the longitudinal direction (first direction). With this configuration, even when the number of cylindrical power storage cells increases, air can be reliably flowed along each cell. INDUSTRIAL APPLICABILITY The power storage cell pack of the present invention is suitable for constructing a cooling system in which a plurality of power storage cell packs are stacked and arranged inside a housing, and an air blower provided in the housing sucks air from inside the housing. .

  The structure of the cell row holder is arbitrary, but when the number of the plurality of cell rows is n (an integer of 2 or more), the cell row holder is constituted by (n + 1) divided holder units stacked in the third direction. be able to. In this case, the (n + 1) divided holder units can be configured to sandwich one cell row between two adjacent divided holder units. If the (n + 1) divided holder units are each provided with a plurality of exterior component members, the exterior can be configured only by assembling the (n + 1) divided holder units.

  The configuration of the (n + 1) divided holder units can be as follows. First, of the n + 1 divided holder units, two divided holder units located on both side ends in the third direction respectively include an outer wall portion extending in the first direction and the second direction and a second outer wall portion of the outer wall portion. A pair of side walls extending in the third direction from both ends in the direction. In one of the pair of side walls, one or more through holes forming a part of the inflow port are formed, and in the other of the pair of side wall parts, one or more through holes forming a part of the outflow port are formed. A hole is formed. The wall surface of the outer wall portion has a plurality of contact portions extending in the direction in which the pair of side wall portions extend and contacting a part of the cylindrical outer can of the plurality of cylindrical power storage cells constituting the cell row. The plurality of contact portions constitute two or more contact portion rows arranged in the second direction and spaced from each other in the first direction.

  Further, of the n + 1 divided holder units, one or more remaining divided holder units located between the two divided holder units are a pair of side walls located at both ends in the second direction and extending in the third direction. And a portion of a cylindrical outer can of a plurality of cylindrical power storage cells forming two cell rows when disposed between two adjacent cell rows positioned between the pair of side wall sections. And an intermediate structure portion having a plurality of intermediate contact portions. In one of the pair of side walls, one or more through holes forming a part of the inflow port are formed, and in the other of the pair of side wall parts, one or more through holes forming a part of the outflow port are formed. A hole is formed. The plurality of intermediate contact portions form two or more rows of intermediate contact portions arranged in the second direction and spaced from each other in the first direction.

  When a cell row holder is configured using such n + 1 divided holder units, an arbitrary number of cylindrical power storage cells can be held by increasing the number of divided holder units having an intermediate contact portion. One or more through holes are formed in one of the pair of side wall portions of each of the divided holder units, and a part of the outflow port is formed in the other of the pair of side wall portions. Since one or more through-holes are formed, the exterior can be configured without significantly lowering the mechanical strength of the exterior.

  In the split holder unit having the intermediate contact portion, it is preferable that each of the two or more rows of the intermediate contact portions has a plate shape integrally formed. It is preferable that the two or more rows of plate-like intermediate contact portions are connected to each other by a plurality of connection bars extending in the first direction and arranged in the second direction. If two or more intermediate contact rows are connected using a plurality of connecting bars, even if the length of the intermediate contact rows becomes long, a decrease in mechanical strength of the split holder unit having the intermediate contact section is prevented. can do.

  The positions of the two or more contact portion rows and the two or more intermediate contact portion rows are determined such that the plurality of divided holder units are aligned along the third direction in a state where the plurality of divided holder units are stacked in the third direction. ing. Then, in a state where the row of contact portions and the row of intermediate contact portions are aligned, a contact portion is formed between one contact portion and one intermediate contact portion such that a cylindrical fitting hole into which the cylindrical outer can fits is formed. And the shape of the intermediate contact portion are preferably determined. By doing so, the cylindrical power storage cell can be held most reliably.

  It is preferable that a control circuit holder into which a control circuit for controlling the voltage of the plurality of cylindrical power storage cells is provided is provided on one of the pair of side walls of the remaining one or more divided holder units. In this way, the control circuit holder can be attached to the exterior in the process of combining split holder units. As a result, the cell row holder, the exterior, and the control circuit holder can be assembled at the same time only by assembling the cell row holder.

It is a perspective view showing composition of a 1st embodiment of an electric storage cell pack of the present invention. It is a perspective view showing an example of a cylindrical electricity storage cell and an example of a bus bar. In order to show the internal structure of the storage cell pack according to the second embodiment of the present invention, the cylindrical storage cell described in the first embodiment, the first connection structure, and the second connection structure are excluded. FIG. FIG. 4 is an exploded perspective view of FIG. 3. FIG. 4 is a perspective view showing a state where a first cover member is removed from FIG. 3. FIG. 14 is a perspective view of a split holder unit 143. FIG. 14 is a perspective view of a split holder unit 142. FIG. 4 is a front view of the embodiment of FIG. 3. FIG. 4 is a rear view of the embodiment in FIG. 3. FIG. 4 is a plan view of the embodiment of FIG. 3. FIG. 4 is a bottom view of the embodiment of FIG. 3. FIG. 4 is a right side view of the embodiment in FIG. 3. FIG. 4 is a left side view of the embodiment in FIG. 3. FIG. 4 is a plan view of an embodiment similar to the main part of the embodiment of FIG. 3. FIG. 4 is a bottom view of an embodiment similar to the main part of the embodiment of FIG. 3.

  Hereinafter, embodiments of a power storage cell pack according to the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a perspective view showing the configuration of the first embodiment of the storage cell pack of the present invention. In FIG. 1, the members constituting the exterior 3 of the power storage cell pack 1, the first cover member 5 and the second cover member 7, which will be described later, are depicted as being transparent. Regarding the first direction, the second direction, and the third direction used in the specification and the claims of the present application, the XX direction (hereinafter, referred to as X direction) shown in FIG. 1 is defined as the first direction. Then, the YY direction (hereinafter, referred to as Y direction) is defined as a second direction, and the ZZ direction (hereinafter, referred to as Z direction) is defined as a third direction. In FIG. 1, the storage cell pack 1 is orthogonal to the X direction (first direction) in a state where a cylindrical storage cell 9 including six cylindrical lithium ion batteries has its longitudinal direction oriented in the X direction (first direction). And two cell rows 11 and 13 arranged side by side in the Y direction (second direction). As shown in FIG. 2, the cylindrical power storage cell 9 includes a terminal electrode 10A having one polarity at one end in the longitudinal direction and a terminal electrode 10B having the other polarity at the other end in the longitudinal direction. . The terminal electrode 10B has a nut-shaped terminal portion similarly to the terminal electrode 10A.

  The two cell rows 11 and 13 are held by a cell row holder 17 integrally formed of an insulating resin material. The cell row holder 17 exposes the cell rows 11 and 13 in the X direction (first direction) and the Y direction (with the pair of electrodes 10A and 10B provided on both sides in the longitudinal direction of the cylindrical power storage cell 9 exposed). It is configured to hold at intervals in the Z direction (third direction) orthogonal to the second direction). FIG. 1 shows only a part of the plurality of contact portions 18 provided on the cell row holder 17. The plurality of contact portions 18 have a structure in which the plurality of cylindrical power storage cells 9 constituting the cell rows 11 and 13 are in contact with each other so as to sandwich a part of the cylindrical outer can 9A. The cell row holder 17 has a structure including a plurality of contact portions surrounding the entire circumference of the cylindrical outer can 9A of the cylindrical power storage cell 9, as in the structure shown in FIG. Of course, it may be.

  In the present embodiment, the orientation of the arrangement is determined so that the terminal electrodes 10A and 10B are connected to each other via the bus bar 15 as a connection conductor with the twelve cylindrical power storage cells 9. Twelve cylindrical power storage cells 9 are connected in series, and eventually one of output terminals 16A and 16B becomes a positive output terminal and the other becomes a negative output terminal. A bus bar 15 is fastened to the terminal electrodes 10A and 10B by screws.

  In power storage cell pack 1 of the present embodiment, first connection structure 19 is configured by bus bar 15 that electrically connects twelve terminal electrodes 10A and 10B exposed from one side in the X direction of cell row holder 17. ing. The first connection structure 19 is covered with the first cover member 5 made of an insulating resin.

  Although not shown in FIG. 1, a second connection structure is configured by a bus bar 15 that electrically connects the twelve electrodes 10A and 10B exposed from the other side in the X direction of the cell row holder 17. . The second connection structure is covered by a second cover member 7 made of an insulating resin.

  The power storage cell pack 1 also includes four exterior components 25, 26, 27, and 28 that constitute the exterior 3 in combination with the first cover member 5 and the second cover member 7. The structure of the four exterior components 25, 26, 27, and 28 is determined so that the exterior 3 has an inlet 33 and an outlet (not shown) through which air flows in the Y direction in the interior of the exterior. . The number and shape of the exterior components are arbitrarily determined according to the design, and are not limited to the present embodiment. For example, the first cover member 5, the second cover member 7, and one to three exterior components may naturally constitute an exterior. The outlet is formed at a position facing the inlet 33 in the Y direction. A control circuit holder 35 containing a control circuit for controlling the voltage of the 12 cylindrical power storage cells 9 is provided beside the inflow port 33.

  According to the power storage cell pack 1 of the present embodiment, the mechanical strength of the power storage cell pack 1 is improved by the cell row holder 17, the first and second cover members 5 and 7, and the exterior components 25 to 28. Safety is ensured. In addition, air can flow in the Y direction orthogonal to the longitudinal direction (X direction) of the cylindrical power storage cell 9 in the exterior 3. In this way, even when the number of cylindrical power storage cells 9 increases, air can be reliably flowed along each cell 9.

[Second embodiment]
FIG. 3 shows a cylindrical power storage cell 9 described in the first embodiment, a first connection structure 19, and a second power storage cell pack 101 in order to show the internal structure of the power storage cell pack 101 according to the second embodiment of the present invention. FIG. 4 is a perspective view of a state excluding a second connection structure. FIG. 4 is an exploded perspective view of FIG. 3, and FIG. 5 shows a state in which the first cover member 105 is removed from FIG. In these drawings, the illustration of the harness cover that covers the wiring inside the power storage cell pack 101 is also omitted.

  In the power storage cell pack 101 of the present embodiment, the structure of the cell row holder 117 is different from that of the cell row holder 17 used in the first embodiment. Generally described, cell row holder 117 used in the present embodiment is such that, when the number of a plurality of cell rows is n (an integer of 2 or more), the cell row holder moves in the Z direction (third direction). It is composed of n + 1 divided holder units that are overlapped. The n + 1 divided holder units are configured to sandwich one cell row between two adjacent divided holder units. The n + 1 divided holder units each include a plurality of exterior components. In the present embodiment, n + 1 divided holder units are each composed of three divided holder units 141, 142 and 143 integrally formed of insulating resin.

  The two divided holder units 141 and 143 located at both ends in the Z direction (third direction) have outer wall portions 141A and 143A extending in the X direction (first direction) and the Y direction (second direction), respectively. And a pair of side walls 141B and 141C and 143B and 143C extending in the Z direction from both ends in the Y direction of the outer walls 141A and 143A. Two through-holes 141D and 143D forming a part of the inflow port are formed in one of the side wall portions 141B and 143B of the pair of side wall portions, and are formed in the other side wall portions 141C and 1434C of the pair of side wall portions. Is formed with two through-holes 141E and 143E (FIG. 9) which constitute a part of the outlet. The wall surfaces of the outer wall portions 141A and 143A have a plurality of contacts that extend in the direction in which the pair of side wall portions 141B and 141C and 143B and 143C extend to contact a part of the cylindrical outer can of the plurality of cylindrical power storage cells that form a cell row. It has parts 141F and 143F.

  Specifically, as shown in the perspective view of the divided holder unit 143 shown in FIG. 6, a plurality of contact portions 143F are arranged in the Y direction and are arranged at intervals in the X direction. Is composed. In the present embodiment, one contact portion row 143G is constituted by the six contact portions 143F. The divided holder unit 141 has a shape symmetric to the divided holder unit 143 with respect to an XY plane extending in the X direction and the Y direction. Therefore, the plurality of contact portions 141F of the divided holder unit 141 constitute three contact portion rows 141G arranged in the Y direction and arranged at intervals in the X direction. One contact portion row 141G is constituted by the six contact portions 143F. As shown in FIG. 6, the divided holder unit 143 is provided integrally with six pillars 143H. The six pillars 142H are insert-molded with nut members into which the screw portions at the tips of the coupling screw members 144 (see FIG. 5) are screwed. Nut members into which the threaded portions at the tips of the screw members 144 are screw-inserted are also formed at the contact portions 143F located at both ends in the Y direction of the central contact portion row 143G and the contact portions 143F located at the center. . A pillar similar to the pillar 143H is also provided integrally with the divided holder unit 141.

  The remaining one divided holder unit 142 located between the two divided holder units 141 and 143 is located at both ends in the Y direction and extends in the Z direction. And a plurality of cylindrical power storage cells 9 (FIG. 2) forming two cell rows when arranged between two adjacent cell rows (similar to cell rows 11 and 13 in FIG. 1). An intermediate structure portion 142A having a plurality of intermediate contact portions 142F that contact a part of the outer can 9A is provided. Two through holes 142D forming part of the inflow port are formed in one side wall part 142B of the pair of side wall parts, and two through holes 142D forming part of the outflow port are formed in the other side wall part 142C. A through hole 142E is formed. The plurality of intermediate contact portions 142F constitute three intermediate contact portion rows 142G arranged in the Y direction and arranged at intervals in the X direction.

  In the divided holder unit 142 having the intermediate contact portion 142F, each of the three intermediate contact portion rows 142G has a plate shape configured integrally. The three plate-like intermediate contact portion rows 142G are connected to each other by five connecting bars extending in the X direction and arranged in the Y direction. If the three intermediate contact portions 142G are connected using the five connection bars 142I, the mechanical strength of the split holder unit 142 having the intermediate contact portions 142F can be increased even when the length of the intermediate contact portions 142G is increased. A decrease in strength can be prevented.

  As shown in FIG. 7, the divided holder unit 142 is provided with six pillars 142H integrally. The six pillars 142H are formed with through holes through which the screw members 144 for connection (see FIG. 5) penetrate. The intermediate contact portions 142F located at both ends in the Y direction of the central intermediate contact portion row 142G and the intermediate contact portions 142F located at the center also have through holes through which the screw members 144 pass.

  A main body 135A of a control circuit holder 135 in which a control circuit for controlling the voltage of the plurality of cylindrical power storage cells 9 is integrally provided on one side wall 142B of the divided holder unit 142. The main body 135A is closed by a lid member 135B, and a control circuit is housed in the internal space. With such a structure, the control circuit holder 135 can be attached to the exterior 131 in the process of assembling the divided holder units 141 to 143. As a result, only by assembling the cell row holder 117, the cell row holder 117, the exterior 131, and the control circuit holder can be assembled at the same time.

  In the present embodiment, the outer wall portions 141A and 143A and the pair of side wall portions 141B and 141C and 143B and 143C of the divided holder units 141 and 143, and the pair of side wall portions 142B and 142C of the divided holder unit 141 constitute exterior components, respectively. are doing. As shown in FIG. 8, the inflow port 133 is formed by the through holes 141D, 142D, and 143D. As shown in FIG. 9, an outflow port 134 is formed by the through holes 141E, 142E, and 143E. When the inflow port 133 and the outflow port 134 are constituted by a plurality of through holes as described above, it is possible to prevent the mechanical strength of the outer casing 131 from being significantly reduced.

  FIG. 5 is a perspective view of the power storage cell pack with the first cover member 105 removed. As shown in FIG. 5, three contact part rows 141G of the divided holder unit 141 and three intermediate contact part rows 142G of the divided holder unit 142, and three contact part rows 143G of the divided holder unit 143 and the divided holder units 142 The positions of the three intermediate contact portion rows 142G are determined such that the divided holder units 141 to 143 are aligned along the Z direction when the divided holder units 141 to 143 are stacked in the Z direction. In the present embodiment, the cylindrical outer can 9A fits between one contact part 141F or 143F and one intermediate contact part 142F in a state where the contact part rows 141G and 143G and the intermediate contact part row 142G are aligned. The shapes of the contact portions 141F and 143F and the shape of the intermediate contact portion 142F are determined so that the cylindrical fitting hole 145 is formed. When the cylindrical fitting hole 145 is formed as described above, the cylindrical power storage cell 9 can be held most reliably.

  As shown in FIG. 5, in a state where the divided holder units 141 to 143 are stacked in the Z direction, the first cover member 105 is fitted to one end in the X direction of the cell row holder 117. A step 146 is formed. Although not shown in FIG. 5, a step portion with which the second cover member 107 is fitted is formed at the other end of the cell row holder 117 in the X direction. The first cover member 105 and the second cover member 107 are attached to the cell row holder 117 using the screw members 147 (FIGS. 12 and 13) in a state fitted to the step portion 146. As shown in FIG. 3, the first cover member 105 is formed with through holes 105A and 105B from which terminals similar to the output terminals 16A and 16B shown in FIG. 1 protrude.

  When a cell row holder is configured using n + 1 divided holder units as in the present embodiment, an arbitrary number of cylindrical power storage cells can be held by increasing the number of divided holder units 142 having intermediate contact portions 142F. be able to.

  In the first embodiment, the exterior 3 is configured so that air flows in the Y direction (second direction), but the exterior 3 is configured so that air flows in the Z direction (third direction). May be. In this case, the inflow port 33 and the outflow port are completely closed, and one or more through-holes forming the inflow port and the outflow port are formed in the exterior components 25 to 28 located in the Z direction of the exterior 3. Good. In the second embodiment, the inflow port 133 and the outflow port 134 are completely closed to form an outflow port 134 ′ having two through holes in the outer wall portion 141 </ b> A as shown in FIGS. 15 and 16. The exterior 131 may be configured so that air flows in the Z direction (third direction) by forming an inflow port 133 ′ including two through holes in the outer wall 143 </ b> A. The number and shape of the plurality of through-holes constituting the inflow port 133 'and the outflow port 134' are arbitrary.

  Note that the present invention is not limited to the above-described first and second embodiments, but includes various modifications. The above embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. For example, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. Further, for a part of the configuration of each embodiment, it is also possible to add, delete, or replace another configuration.

  According to the present invention, the mechanical strength and safety of the power storage cell pack are ensured by the cell row holder, the first and second cover members, and the exterior constituent members, and then the cylindrical power storage cell is mounted inside the exterior. The air can flow in a second direction or a third direction orthogonal to the longitudinal direction (first direction). With this configuration, even when the number of cylindrical power storage cells increases, air can be reliably flowed along each cell.

REFERENCE SIGNS LIST 1 power storage cell pack 3 exterior 5 first cover member 7 second cover member 9 cylindrical power storage cell 9A cylindrical outer can 10A terminal electrode 10B terminal electrode 11 cell row 13 cell row 15 bus bar 17 cell row holder 18 contact portion 19 first 33 Inflow port 35 Control circuit holder 101 Energy storage cell pack 105 First cover member 107 Second cover member 117 Cell row holder 131 Exterior 133,133 'Inflow port 134,134' Outflow port 135 Control circuit holder 141- 143 Division holder unit 141A Outer wall part 141B Side wall part 141C Side wall part 141D Through hole 141E Through hole 141F Contact part 141G Contact part row 141H Pillar 142A Intermediate structure part 142B Side wall part 142F Intermediate contact part 142D Through hole 142G Side wall part 142 Intermediate contact section row 142I connection bar 143A outer wall section 143B side wall section 143C side wall section 143D through hole 143F contact section 143G contact section row 143H pillar 144 screw member

Claims (5)

A plurality of cell rows in which a plurality of cylindrical power storage cells are arranged side by side in a second direction orthogonal to the first direction with a longitudinal direction oriented in a first direction;
With the pair of electrodes provided on both sides in the longitudinal direction of the cylindrical power storage cell exposed, the plurality of cell rows are spaced in a third direction orthogonal to the first direction and the second direction. A cell row holder to open and hold
A first connection structure for electrically connecting the plurality of electrodes exposed from one side of the cell row holder in the first direction;
A second connection structure for electrically connecting the plurality of electrodes exposed from the other side in the first direction of the cell row holder;
A first cover member that entirely covers the first connection structure;
A second cover member that entirely covers the second connection structure;
The first cover member and a plurality of exterior component members forming an exterior in combination with the second cover member,
The plurality of exterior component members are configured to form an exterior having an inlet and an outlet through which air flows through the interior of the exterior in the second direction or the third direction. And
The number of the plurality of cell columns is n (an integer of 2 or more);
The cell row holder is constituted by (n + 1) divided holder units stacked in the third direction,
The (n + 1) divided holder units are configured to sandwich one cell row between two adjacent divided holder units,
The (n + 1) divided holder units each include the plurality of exterior components,
Of the (n + 1) divided holder units, the two divided holder units located on both side ends in the third direction each have an outer wall portion extending in the first direction and the second direction, and an outer wall portion of the outer wall portion. A pair of side wall portions extending in the third direction from both ends in the second direction,
The wall surface of the outer wall portion has a plurality of contact portions that extend in a direction in which the pair of side wall portions extend and contact a part of the cylindrical outer can of the plurality of cylindrical power storage cells that form the cell row. ,
The plurality of contact portions form two or more contact portion rows arranged in the second direction and arranged at intervals in the first direction,
Of the (n + 1) divided holder units, one or more of the remaining divided holder units located between the two divided holder units are located at both ends in the second direction and are positioned in the third direction. A pair of side wall portions extending, and the plurality of cylindrical power storage cells constituting the two cell lines when disposed between two adjacent cell lines positioned between the pair of side wall portions; An intermediate structure portion having a plurality of intermediate contact portions that contact a part of the cylindrical outer can,
The plurality of intermediate contact portions form two or more rows of intermediate contact portions arranged in the second direction and spaced from each other in the first direction,
The two or more contact portion rows and the two or more intermediate contact portion rows are aligned along the third direction in a state where the plurality of divided holder units are stacked in the third direction. Has a fixed position,
In a state where the contact section row and the intermediate contact section row are aligned, a cylindrical fitting hole in which the cylindrical outer can fits is formed between one contact section and one intermediate contact section. The shape of the contact portion and the intermediate contact portion is determined,
One of the pair of side wall portions of the remaining one or more divided holder units is provided with a control circuit holder in which a control circuit for controlling a voltage of the plurality of cylindrical power storage cells is provided. Cell pack. One or more through-holes forming a part of the inflow port are formed in one of the pair of side wall portions, and one or more of the outflow ports forming a part of the outflow port are formed in the other of the pair of side wall portions. The above through hole is formed,
One or more through-holes forming a part of the inflow port are formed in one of the pair of side wall portions, and one or more of the outflow ports forming a part of the outflow port are formed in the other of the pair of side wall portions. The power storage cell pack according to claim 1, wherein the through hole is formed. Each of the two or more intermediate contact portion rows has a plate shape integrally formed,
The power storage cell pack according to claim 1, wherein the two or more plate-shaped rows of intermediate contact portions are connected to each other by a plurality of connection bars extending in the first direction and arranged in the second direction . The n + 1 divided holder units include three divided holder units,
Of the three divided holder units, two divided holder units located on both side ends in the third direction each have an outer wall portion extending in the first direction and the second direction, and an outer wall portion of the outer wall portion. A pair of side wall portions extending in the third direction from both ends in the second direction,
One or more through-holes forming a part of the inflow port are formed in one of the pair of side wall portions, and one or more of the outflow ports forming a part of the outflow port are formed in the other of the pair of side wall portions. The above through hole is formed,
The wall surface of the outer wall portion has a plurality of contact portions that extend in a direction in which the pair of side wall portions extend and contact a part of the cylindrical outer can of the plurality of cylindrical power storage cells that form the cell row. ,
The plurality of contact portions form two or more contact portion rows arranged in the second direction and arranged at intervals in the first direction,
Of the three divided holder units, one remaining divided holder unit located between the two divided holder units is located at both ends in the second direction and is located in the third direction. A pair of extending side wall portions, and the cylinders of the plurality of cylindrical power storage cells constituting the two cell lines when disposed between two adjacent cell lines positioned between the pair of side wall portions. An intermediate structure portion having a plurality of intermediate contact portions that contact a part of the outer can,
One or more through-holes forming a part of the inflow port are formed in one of the pair of side wall portions, and one or more of the outflow ports forming a part of the outflow port are formed in the other of the pair of side wall portions. The above through hole is formed,
2. The plurality of intermediate contact portions, wherein the plurality of intermediate contact portions form a row of two or more intermediate contact portions arranged in the second direction and spaced from each other in the first direction. 3. The storage cell pack according to the above. The power storage cell pack according to claim 1, wherein the cylindrical power storage cell is a lithium ion battery.