WO2016147280A1

WO2016147280A1 - Battery pack and battery pack device

Info

Publication number: WO2016147280A1
Application number: PCT/JP2015/057601
Authority: WO
Inventors: 辰己松尾; 小杉　伸一郎; 関野　正宏
Original assignee: 株式会社東芝
Priority date: 2015-03-13
Filing date: 2015-03-13
Publication date: 2016-09-22

Abstract

The battery pack according to an embodiment is provided, for example, with a plurality of battery cells. The plurality of battery cells are configured as rectangular solids each having a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface, wherein any one surface of the first surface, the second surface, the third surface, the fourth surface, the fifth surface, and the sixth surface, or the surface on the reverse side of the one surface is positioned in a first direction, and the short-side direction and the long-side direction of the surface in the first direction of at least one battery cell among the plurality of battery cells is orthogonal to the first direction.

Description

Assembled battery and assembled battery device

Embodiments of the present invention relate to an assembled battery and an assembled battery device.

Conventionally, an assembled battery in which a direction in which a plurality of battery cells are arranged and a thickness direction of the battery cells are in line with each other is known.

JP 2011-071097 A

In this type of assembled battery, for example, it is preferable if an assembled battery and an assembled battery device having a new configuration with less inconvenience can be obtained.

The assembled battery according to the embodiment includes, for example, a plurality of battery cells. The plurality of battery cells are configured in a rectangular parallelepiped shape having a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface, respectively. Any one of the three, fourth, fifth, and sixth surfaces or the opposite surface is arranged in a posture along the first direction, and at least one battery among the plurality of battery cells The short side direction and the long side direction of the surface along the first direction of the cell intersected the first direction.

FIG. 1 is a plan view illustrating an exemplary internal structure of the assembled battery device according to the first embodiment. FIG. 2 is a side view illustrating an exemplary internal structure of the assembled battery device according to the first embodiment. FIG. 3 is an exemplary plan view of the assembled battery of the assembled battery device according to the first embodiment. FIG. 4 is an exemplary side view of the assembled battery of FIG. 3 as viewed from one side in the Y direction. FIG. 5 is an exemplary perspective view of the battery cell of the assembled battery device according to the first embodiment. FIG. 6 is an exemplary side view showing a state where the conductive member of the battery pack of FIG. 4 is omitted. FIG. 7 is an exemplary plan view of the assembled battery of the assembled battery device according to the second embodiment. FIG. 8 is an exemplary side view of the assembled battery of FIG. 7 as viewed from one side in the Y direction. FIG. 9 is an exemplary side view of the assembled battery of the assembled battery device according to the third embodiment. FIG. 10 is an exemplary side view of the assembled battery of FIG. 9 with the first substrate omitted. FIG. 11 is an exemplary side view of the assembled battery of the assembled battery device according to the fourth embodiment. 12 is an exemplary side view of the assembled battery of FIG. 11 as seen through from one side in the X direction. FIG. 13 is an exemplary side view of the assembled battery of the assembled battery device of the fifth embodiment. 14 is an exemplary side view of the assembled battery of FIG. 13 as seen through from one side in the X direction. FIG. 15 is a side view illustrating an exemplary internal structure of the assembled battery device according to the sixth embodiment.

Hereinafter, exemplary embodiments of the present invention will be disclosed. The configuration of the embodiment shown below, and the operation and result (effect) brought about by the configuration are examples. The present invention can be realized by configurations other than those disclosed in the following embodiments. Further, according to the present invention, at least one of various effects (including derivative effects) obtained by the configuration can be obtained.

Also, the same components are included in the embodiments disclosed below. Therefore, below, the same code | symbol is provided to those similar components, and the overlapping description is abbreviate | omitted.

<First Embodiment>
As shown in FIG. 1, the assembled battery device 1 (storage battery device, battery pack, battery system) includes, for example, a housing 2 (first housing) and a plurality of assembled batteries 3 (battery module, battery unit). And a board 4 (control board, circuit board, monitoring board, management device), a fuse 5, an electrode unit 6, and cables 7 and 8 (wiring, cord). The assembled battery device 1 is installed in various devices, machines, facilities, etc., and is used as a power source for these various devices, machines, facilities. For example, the assembled battery device 1 is used not only as a mobile power source such as a power source for an automobile or a bicycle (moving body) but also as a stationary power source such as a power source for a POS (Point Of Sales) system. Can also be used. Moreover, the assembled battery apparatus 1 shown by several this embodiment can also be mounted in various apparatuses etc. as a set connected in series or in parallel.

As shown in FIG. 1, the housing 2 and the housing 11 of the assembled battery 3 are configured in a rectangular parallelepiped shape that is long in the horizontal direction. In the present embodiment, for example, the assembled battery 3 is accommodated in the housing 2 in a state where the longitudinal direction of the housing 2 and the longitudinal direction of the housing 11 are along each other. The housing 2 includes a wall portion 2e (bottom wall, lower wall, see FIG. 2), wall portions 2a to 2d (side walls, vertical walls, standing walls), a wall portion 2f (top wall, upper wall, see FIG. 2), etc. A plurality of walls. In the present embodiment, at least one of the plurality of wall portions 2a to 2f (for example, the wall portion 2e) can be used in a posture along (facing) a plane. In the following detailed description, for the sake of convenience, the direction is defined based on the posture of the wall 2e along the plane. The X direction is the longitudinal direction of the housing 2 (the longitudinal direction of the housing 11 and the direction in which the plurality of battery cells 10 (see FIG. 4) are arranged), and the Y direction is the short direction of the housing 2 (the short side of the housing 11). The hand direction) and the Z direction are the height direction of the housing 3 (the height direction of the housing 11). In the present embodiment, the X direction is an example of a first direction.

A plurality of (for example, six) assembled batteries 3 are accommodated in the housing 2. As shown in FIG. 1, in this embodiment, for example, a plurality of assembled batteries 3 and a positive electrode part 6 a and a negative electrode part 6 b of an electrode part 6 are connected in series via a cable 7 (wiring, cord, conductive member). Is connected (electrically connected). In addition, a substrate 4 is housed in the housing 2 together with the assembled battery 3. As shown in FIG. 1, the substrate 4 is electrically connected to a substrate 9 (control board, circuit board) provided in each assembled battery 3 via a cable 8 (wiring, cord, signal line, electric wire). Has been. The substrate 4 can monitor, for example, the voltage and temperature of the assembled battery 3 or perform battery control. In the present embodiment, the substrate 9 is an example of a first substrate, and the substrate 4 is an example of a second substrate.

As shown in FIGS. 3 and 4, the assembled battery 3 includes, for example, a plurality of battery cells 10 (unit cells), a casing 11 (second casing), a conductive member 12 (bus bar), and a substrate 9. And having. A plurality (for example, ten) of battery cells 10 are accommodated in the housing 11 in a state of being aligned in a line along the X direction. As shown in FIGS. 5 and 6, each of the plurality of battery cells 10 includes a housing 15 (third housing), a positive electrode terminal 16, and a negative electrode terminal 17. The positive electrode terminal 16 and the negative electrode terminal 17 are coupled (fixed) to the conductive member 12 by, for example, welding (welded portion 19 in FIG. 4). Thereby, the positive electrode terminal 16 and the negative electrode terminal 17 and the conductive member 12 are mechanically connected (fixed) and electrically connected. The assembled battery 3 is provided, for example, at both ends in the X direction while the positive electrode terminal 16 and the negative electrode terminal 17 of two

battery cells

10 and 10 adjacent in the X direction are electrically connected via the conductive member 12. Electric power is taken out through the positive electrode part 13a and the negative electrode part 13b of the electrode part 13 thus obtained.

The battery cell 10 may be composed of, for example, a lithium ion secondary battery. The battery cell 10 may be another secondary battery such as a nickel metal hydride battery, a nickel cadmium battery, or a lead storage battery. A lithium ion secondary battery is a kind of non-aqueous electrolyte secondary battery, and lithium ions in the electrolyte are responsible for electrical conduction. Examples of the positive electrode material include lithium manganese composite oxide, lithium nickel composite oxide, lithium cobalt composite oxide, lithium nickel cobalt composite oxide, lithium manganese cobalt composite oxide, spinel type lithium manganese nickel composite oxide, and olivine structure. As the negative electrode material, for example, an oxide-based material such as lithium titanate (LTO), an oxide material such as niobium composite oxide, or the like is used. Moreover, as electrolyte (for example, electrolyte solution), lithium salt, such as fluorine-type complex salt (for example, LiBF4, LiPF6), etc. was mix | blended, for example, organic carbonates, such as ethylene carbonate, propylene carbonate, diethyl carbonate, ethyl methyl carbonate, and dimethyl carbonate A solvent etc. are used individually or in mixture.

As shown in FIG. 5, the casing 15 of the battery cell 10 is configured in a flat rectangular parallelepiped shape that is thin in the front-rear direction (thickness direction). The housing 15 has a plurality of (for example, six) surfaces (outer surfaces). In the present embodiment, for convenience, the following exemplary names are given to each surface. The surface on which the positive electrode terminal 16 and the negative electrode terminal 17 are provided is referred to as a terminal surface 15f, and the surface opposite to the terminal surface 15f is referred to as a bottom surface 15e. In addition, the front face 15a and the rear face are the lines of sight with the positive electrode terminal 16 positioned on the upper side and the left side, the negative electrode terminal 17 positioned on the upper side and the right side, and the bottom surface 15e positioned on the lower side. The surface located is referred to as the rear side surface 15c, the surface located on the left side is referred to as the left side surface 15b, and the surface located on the right side is referred to as the right side surface 15d. In the present embodiment, the front side surface 15a, the left side surface 15b, the rear side surface 15c, the right side surface 15d, the bottom surface 15e, and the terminal surface 15f are a first surface, a second surface, a third surface, a fourth surface, a fifth surface, And an example of the sixth surface. The ordinal numbers of the first surface to the sixth surface are the six surfaces of the rectangular parallelepiped casing 15 of the battery cell 10, that is, the above-described front side surface 15a, left side surface 15b, rear side surface 15c, right side surface 15d, bottom surface 15e, and It is given for convenience in order to identify the terminal surface 15f, and does not indicate the order of priority, importance, manufacturing procedure, or the like. The front side surface 15a, the left side surface 15b, the rear side surface 15c, the right side surface 15d, the bottom surface 15e, and the terminal surface 15f are exemplary and convenient names, and may be referred to by other names.

As shown in FIG. 5, the front side surface 15a and the rear side surface 15c are provided in parallel to each other with a space in the front-rear direction (thickness direction) of the casing 15, and the left side surface 15b and the right side surface 15d are 15 are provided in parallel to each other at intervals in the left-right direction (width direction). Further, the bottom surface 15e and the terminal surface 15f are provided in parallel to each other with an interval in the height direction (vertical direction) of the housing 15. The terminal surface 15f can also be referred to as an upper surface, a top surface, or the like. The bottom surface 15e can also be referred to as a bottom surface. As shown in FIG. 4, in the present embodiment, for example, the short side direction DS is a direction along the short side of the rectangular shape, and the long side direction DL is along the long side of each surface of the rectangular shape. Direction. In the example of FIG. 5, both the short side direction DS and the long side direction DL intersect with the X direction (first direction).

Further, the casing 15 is configured by combining a plurality of parts (divided bodies). Specifically, the housing 15 includes, for example, a first housing member 15A (case, lower case) and a second housing member 15B (lid, cover, upper case). The first housing member 15A has at least a front side surface 15a, a left side surface 15b, a rear side surface 15c, a right side surface 15d, and a bottom surface 15e, and the second housing member 15B has at least a terminal surface 15f. 15 A of 1st housing members are comprised by the rectangular parallelepiped box shape by which the one end side (upper end side) was open | released. For example, an electrode body, an electrolytic solution, and the like are accommodated in the first housing member 15A. The electrode body includes, for example, a positive electrode sheet, a negative electrode sheet, and an insulating layer (separator). The electrode body may be formed in a flat shape by winding (folding) a positive electrode sheet, a negative electrode sheet, and an insulating layer. The electrode body is an electrode group and functions as a power generation element.

The second casing member 15B is configured in a rectangular plate shape that is long in the left-right direction (width direction) of the casing 15. The second housing member 15B closes the opened portion of the first housing member 15A and is integrated with the first housing member 15A. The second housing member 15B can also be referred to as a lid member. Note that the first housing member 15A and the second housing member 15B can be coupled in an airtight and liquid tight manner, for example, by welding. The first housing member 15A and the second housing member 15B can be made of, for example, a metal material or a synthetic resin material.

Further, the positive electrode terminal 16 and the negative electrode terminal 17 are provided on the second housing member 15B, that is, the terminal surface 15f. As shown in FIG. 5, in the present embodiment, the positive terminal 16 is positioned on one side (left side in FIG. 5) in the long side direction DL of the terminal surface 15f, and the negative terminal 17 is the long side of the terminal surface 15f. It is located on the other side of the direction DL (right side in FIG. 5). The positive terminal 16 is provided in a state of penetrating the second housing member 15 B, and is electrically connected to the positive electrode sheet of the electrode body in the housing 15. The negative electrode terminal 17 is provided in a state of penetrating the second housing member 15 B, and is electrically connected to the negative electrode sheet of the electrode body in the housing 15. The positive terminal 16 and the negative terminal 17 can be made of a conductive material.

As shown in FIG. 3, the housing 11 is configured in a rectangular shape that is long in the X direction in plan view. The housing 11 includes a plurality of wall portions 11a, a plurality of wall portions 11b, a plurality of wall portions 11c, a plurality of wall portions 11d, and the like. As shown in FIG. 4, the plurality of wall portions 11a are along the long side direction DL of the terminal surface 15f, and all of them are in a direction intersecting the X direction (a direction between the X direction and the Z direction). It extends. The plurality of wall portions 11a are provided in parallel to each other with an interval in the X direction. The angle at which the wall 11a intersects the X direction is greater than 0 ° and smaller than 90 °. That is, the wall part 11a is inclined with respect to the X direction. The plurality of wall portions 11a are configured in a rectangular shape that is long in the Y direction in a plan view (FIG. 3). The plurality of wall portions 11b are along the short side direction DS of the terminal surface 15f, and all extend in a direction intersecting (orthogonal) with the wall portion 11a. The plurality of wall portions 11b are provided in parallel to each other with an interval in the X direction. The plurality of wall portions 11b are provided at one end (upper side in FIG. 4) in the short direction of each wall portion 11a, and between the two

wall portions

11a and 11a adjacent to each other in the X direction. Across. The plurality of wall portions 11c extend along the short side direction DS of the terminal surface 15f, and all extend in a direction intersecting (orthogonal) with the wall portion 11a. The plurality of wall portions 11c are provided in parallel to each other with an interval in the X direction. The plurality of wall portions 11c are provided at the other end portion (lower side in FIG. 4) in the short side direction of each wall portion 11a, and between the two

wall portions

11a and 11a adjacent to each other in the X direction. It is over. The wall part 11b and the wall part 11c are substantially parallel to each other. Each of the plurality of wall portions 11d is along a direction intersecting (orthogonal) with the wall portion 11a. As shown in FIG. 3, the plurality of wall portions 11 d are provided at the other end portion in the longitudinal direction of each wall portion 11 a and between the two

wall portions

11 a and 11 a adjacent to each other in the X direction. And between the wall 11b and the wall 11c facing each other in the short direction of the wall 11a. In the present embodiment, such wall portions 11a to 11d are provided with accommodating portions 11s for accommodating the battery cells 10 between the

wall portions

11a and 11a adjacent to each other in the X direction. As shown in FIGS. 3 and 4, the accommodating portion 11 s is opened toward one side in the Y direction. In the housing 11, the battery cells 10 and the wall portions 11a are alternately stacked in the X direction.

Also, as shown in FIG. 4, in the present embodiment, the end 11 f (corner) on one side (upper side) of the housing 11 in the Z direction and the other side (lower side) of the housing 11 in the Z direction. The end portions 11e (corner portions) are positioned so as to overlap each other along the X direction (aligned). As shown in FIGS. 1 and 2, the casing 11 can be disposed in the casing 2 in a state (posture) in which each end portion 11 e is in contact with the wall portion 2 e. As shown in FIG. 3, in the present embodiment, the end 11 g on the one side in the Y direction of the housing 11 and the end 11 h on the other side in the Y direction of the housing 11 are also in the X direction. Are overlapping (aligned) with each other.

And as FIG. 6 shows, in this embodiment, all the battery cells 10 are accommodated in each accommodating part 11s with the same attitude | position, for example. Specifically, each terminal surface 15f faces one side in the Y direction, and each left side surface 15b faces one side in the long side direction (left side in FIG. 6). Further, the terminal surfaces 15f of all the battery cells 10 extend along the X direction (and the Z direction). Moreover, the bottom face 15e located on the opposite side to the terminal face 15f of all the battery cells 10 extends along the X direction (and the Z direction). Thereby, in this embodiment, each terminal surface 15f of the some battery cell 10 is aligned along the X direction, and each bottom surface 15e is aligned along the X direction. In the present embodiment, the terminal surface 15f extending along the X direction is an example of a first alignment surface, and the bottom surface 15e extending along the X direction is an example of a second alignment surface. Further, in the present embodiment, all the battery cells 10 are accommodated in the accommodating portions 11s inclined with respect to the X direction, whereby the short side direction DS and the long side direction DL of the respective terminal surfaces 15f and the bottom surface 15e. Intersects the X direction. Thus, in this embodiment, since the housing 11 of the assembled battery 3 and the plurality of battery cells 10 are inclined with respect to the X direction, for example, the direction in which the plurality of battery cells 10 are arranged (X direction) Compared to the case where the thickness direction of the battery cells 10 is along each other, the assembled battery 3 is easily configured more compactly in one direction (for example, the Z direction). Therefore, for example, the degree of freedom in setting the specification (shape) of the assembled battery 3 is likely to increase, and as a result, the degree of freedom in the layout of the assembled battery 3 is likely to increase.

Further, in the present embodiment, for example, the wall portion 11a (accommodating portion 11s) of the housing 11 partially overlaps the short direction of the wall portion 11a (the short side direction DS of the terminal surface 15f). Thereby, in the state where the plurality of battery cells 10 are accommodated in the respective accommodating portions 11s, the cooling effect of the battery cells 10 can be easily obtained by heat transfer through the wall portions 11a, the wall portions 11b to 11d, and the like. In the present embodiment, the positive electrode terminal 16 and the negative electrode terminal 17 of the two adjacent battery cells 10 are located in a part of the wall portion 11a that partially overlaps each other. Therefore, according to the present embodiment, for example, a plurality of battery cells 10 arranged along the X direction are relatively easily connected via the conductive member 12, and a series circuit including the plurality of battery cells 10 is relatively easy. May be obtained.

As shown in FIG. 4, in this embodiment, the substrate 9 is provided at the end of one side (left side in FIG. 4) in the X direction of the housing 11, and the wall 11a (the length of the terminal surface 15f). In the posture along the side direction DL). If the substrate 9 is positioned on the upper side of the housing 11 in a posture along the wall 2e (plane), the assembled battery 3 may be enlarged in the Z direction. In that respect, according to this embodiment, since the board | substrate 11 is located along the wall part 11a (long-side direction DL of the terminal surface 15f), the assembled battery 3 can be comprised compactly by a Z direction. For example, compared with the case where the board | substrate 9 is located in the center part of the X direction on the upper side of the housing | casing 11, the cooling effect of the battery cell 10 by the heat transfer through the housing | casing 11 is prevented by the board | substrate 9. Can be suppressed. In addition, the board | substrate 9 can be electrically connected with the some battery cell 10 by the electrically-conductive member, cable, etc. which are not shown in figure.

As described above, in the present embodiment, for example, the assembled battery 3 includes a plurality of rectangular parallelepiped battery cells having the front side surface 15a, the left side surface 15b, the rear side surface 15c, the right side surface 15d, the bottom surface 15e, and the terminal surface 15f. 10, each of the plurality of battery cells 10 is any one of the front side surface 15a, the left side surface 15b, the rear side surface 15c, the right side surface 15d, the bottom surface 15e, and the terminal surface 15f (for example, the terminal surface 15f). Are arranged in a posture along the X direction (first direction), and the short side direction DS and the length of the surface (terminal surface 15f) along the X direction of at least one battery cell 10 of the plurality of battery cells 10 are arranged. The side direction DL intersects the X direction (first direction). Therefore, according to the present embodiment, for example, the assembled battery 3 is easily configured more compactly in one direction (for example, the Z direction). Therefore, for example, the degree of freedom in setting the specification (shape) of the assembled battery 3 is likely to increase, and as a result, the degree of freedom in the layout of the assembled battery 3 is likely to increase.

In the present embodiment, for example, the short side direction DS and the long side direction DL of the surface (for example, the terminal surface 15f) along the X direction (first direction) of all the battery cells 10 are the X direction ( Crosses the first direction). Therefore, according to the present embodiment, for example, the assembled battery 3 can be configured more compactly in one direction (for example, the Z direction).

In the present embodiment, for example, the positive electrode terminal 16 and the negative electrode terminal 17 are provided on a surface (for example, the terminal surface 15 f) along (aligned) the X direction (first direction) of the plurality of battery cells 10. ing. Therefore, according to the present embodiment, for example, the positive electrode terminal 16 and the negative electrode terminal 17 are provided on a surface (for example, the left side surface 15b and the right side surface 15d) other than the surface aligned in the X direction (first direction). Compared to the case, the conductive member 12 is likely to be configured in a relatively simple shape. Therefore, for example, labor and cost required for manufacturing the assembled battery 3 are likely to be reduced. In the present embodiment, the case where the positive electrode terminal 16 and the negative electrode terminal 17 are provided on the terminal surface 15f aligned in the X direction (first direction) is exemplified, but the positive electrode terminal 16 and the negative electrode terminal 17 are For example, it may be provided on the left side surface 15b, the right side surface 15d, or the like.

In the present embodiment, for example, each positive electrode terminal 16 of each of the plurality of battery cells 10 is positioned on one side in the long side direction DL of the terminal surface 15f, and each negative electrode terminal 17 is a long side of the terminal surface 15f. It is located on the other side of the direction DL. That is, each positive electrode terminal 16 of the plurality of battery cells 2 is disposed so as to overlap in the X direction (first direction). Therefore, according to the present embodiment, for example, compared with the case where the positive electrode terminal 16 and the negative electrode terminal 17 are alternately arranged along the X direction (first direction), the labor required for manufacturing the assembled battery 3 is reduced. (For example, labor for assembling a plurality of battery cells 10 to the housing 11, etc.) is likely to be reduced.

In the present embodiment, for example, the plurality of battery cells 10 are positioned so as to partially overlap each other in the short-side direction DS of the terminal surface 15f. Therefore, according to the present embodiment, for example, the heat dissipation of the battery cell 10 is likely to be improved as compared with a case where the plurality of battery cells 10 are arranged so as to overlap with each other in the short side direction DS. Therefore, for example, the cooling effect of the battery cell 10 is easily obtained, and as a result, the life of the assembled battery 3 may be easily extended. Moreover, in this embodiment, since one positive electrode terminal 16 and the other negative electrode terminal 17 of the two battery cells 10 adjacent to the part which overlaps partially are located, it is X direction (1st direction). A plurality of battery cells 10 arranged along the line are relatively easily connected via the conductive member 12, and a series circuit including the plurality of battery cells 10 may be obtained relatively easily.

Further, in the present embodiment, for example, a substrate 9 (first substrate) electrically connected to the plurality of battery cells 10 is further provided, and the substrate 9 is positioned along the long side direction DL of the terminal surface 15f. ing. Therefore, according to the present embodiment, for example, the assembled battery 3 can be configured more compactly in one direction (for example, the Z direction).

In the present embodiment, for example, the assembled battery device 1 includes a plurality of assembled batteries 3, a housing 2 that houses the plurality of assembled batteries 3, and the housing 2, and the plurality of assembled batteries 3 and the Connected substrate 4 (second substrate). Therefore, according to the present embodiment, for example, the assembled battery 3, the substrate 4, and the like can be arranged in the housing 2 with a higher density by the assembled battery 3 having a relatively high degree of freedom in setting specifications (shape).

Second Embodiment
The assembled battery device of the embodiment shown in FIGS. 7 and 8 has the same configuration as the assembled battery device 1 of the first embodiment. Therefore, also according to this embodiment, the same result (effect) based on the same configuration as that of the first embodiment can be obtained.

However, in the present embodiment, for example, as shown in FIGS. 7 and 8, the substrate 9A is located on one side in the Y direction of the housing 11 (the assembled battery 3A). The substrate 9A and the housing 11 are positioned so as to overlap each other in the Y direction. Therefore, according to the present embodiment, for example, the assembled battery 3A is unidirectional (for example, Z) as compared with the case where the substrate 9A is positioned on the upper side of the housing 11 and the like along the wall 2e (plane). The direction can be further compact.

<Third Embodiment>
The assembled battery device of the embodiment shown in FIGS. 9 and 10 has the same configuration as the assembled battery device 1 of the first embodiment. Therefore, also according to this embodiment, the same result (effect) based on the same configuration as that of the first embodiment can be obtained.

However, in the present embodiment, for example, as shown in FIGS. 9 and 10, two

battery cells

10 and 10 are accommodated in the accommodating portions 11s in the housing 11A (the assembled battery 3B), respectively. The two

battery cells

10 and 10 adjacent to each other in the X direction and the two

battery cells

10 and 10 are connected (electrically connected) in series via the conductive member 12A. Therefore, according to the present embodiment, for example, the assembled battery 3B can be configured more compactly in the X direction (first direction) than in the case where one battery cell 10 is arranged along the X direction.

<Fourth embodiment>
The assembled battery device of the embodiment shown in FIGS. 11 and 12 has the same configuration as the assembled battery device 1 of the first embodiment. Therefore, also according to this embodiment, the same result (effect) based on the same configuration as that of the first embodiment can be obtained.

However, in the present embodiment, for example, as shown in FIGS. 11 and 12, a plurality of (for example, five) battery cells 10 arranged in the X direction in the housing 11 B (the assembled battery 3 C), A plurality of rows (for example, two rows) are provided along the Z direction. In the present embodiment, in each array of the plurality of battery cells 10 aligned in the Z direction, the left side surface 15b and the right side surface 15d along (aligned) along the Z direction on one side in the X direction (left side in FIG. 11) The right side surface 15d and the left side surface 15b that are included in the first alignment surface and are aligned (aligned) along the Z direction on the other side in the X direction (the right side in FIG. 11) are included in the second alignment surface.

<Fifth Embodiment>
The assembled battery device of the embodiment shown in FIGS. 13 and 14 has the same configuration as the assembled battery device 1 of the fourth embodiment. Therefore, also in this embodiment, the same result (effect) based on the same configuration as that of the fourth embodiment can be obtained.

However, in the present embodiment, for example, as shown in FIGS. 13 and 14, a plurality (lined in the X direction) (on the left side in FIG. 13) of the housing 11 C (assembled battery 3 D) in the X direction For example, three battery cells 10 are provided in a plurality of rows (for example, three rows) along the Z direction, and one battery cell 10 is provided on the other side in the X direction of the housing 11C (the right side in FIG. 13). In addition, a substrate 9D is provided. Therefore, according to the present embodiment, for example, the assembled battery 3D can be configured more compactly in the X direction than in the case of the fourth embodiment.

<Sixth Embodiment>
The assembled battery device 1A according to the embodiment shown in FIG. 15 has the same configuration as the assembled battery device 1 according to the first embodiment. Therefore, also according to this embodiment, the same result (effect) based on the same configuration as that of the first embodiment can be obtained.

However, in the present embodiment, for example, as shown in FIG. 15, in the casing 11 D of the assembled battery 3 E, the posture in which the short side direction DS and the long side direction DL of each terminal surface 15 f intersect the X direction. A plurality of (for example, five) battery cells 10 arranged in the above, and a posture in which the short side direction DS of each terminal surface 15f is parallel to the X direction (the thickness direction of the battery cell 10 is a posture along the X direction). A plurality of (for example, five) battery cells 10 arranged in (1) are accommodated. Further, the substrate 9E and the housing 11D are positioned so as to overlap each other in the Y direction. In the present embodiment, the housing 11D is provided with a portion that is wide in one direction (for example, the Z direction) and a portion that is narrow. Therefore, according to the present embodiment, for example, the assembled battery 3E, the substrate 4 and the like can be arranged in the housing 2A at a higher density by the assembled battery 3E having a relatively high degree of freedom in setting the specification (shape).

As mentioned above, although embodiment of this invention was illustrated, the said embodiment is an example to the last, Comprising: It is not intending limiting the range of invention. The above embodiment can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the spirit of the invention. The above embodiments are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. The present invention can be realized by configurations other than those disclosed in the above embodiments, and various effects (including derivative effects) obtained by the basic configuration (technical features) can be obtained. is there. In addition, the specifications of each component (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) should be changed as appropriate. Can do. For example, the case of the assembled battery in which the direction in which the plurality of battery cells are arranged and the thickness direction of the battery cell are provided along each other may be inclined with respect to the X direction (first direction).

Claims

A battery pack comprising a plurality of rectangular parallelepiped battery cells having a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface,
Each of the plurality of battery cells has a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface, or a surface opposite to the first surface, the second surface, the third surface, the fourth surface, the fifth surface, and the sixth surface. In a posture along the direction of
An assembled battery in which a short side direction and a long side direction of a surface along the first direction of at least one of the plurality of battery cells intersect with the first direction.
The assembled battery according to claim 1, wherein a short side direction and a long side direction of a surface along the first direction of all the battery cells intersect with the first direction.
The assembled battery according to claim 1 or 2, wherein a positive electrode terminal and a negative electrode terminal are provided on a surface along the first direction of the plurality of battery cells.
The assembled battery according to claim 3, wherein the positive terminals of each of the plurality of battery cells are arranged so as to overlap in the first direction.
The assembled battery according to any one of claims 1 to 4, wherein the plurality of battery cells are positioned so as to partially overlap each other in the short side direction.
A first substrate electrically connected to the plurality of battery cells,
The assembled battery according to any one of claims 1 to 5, wherein the first substrate is positioned along the long side direction.
A plurality of assembled batteries according to any one of claims 1 to 6;
A housing for housing the plurality of assembled batteries;
A second substrate provided in the housing and electrically connected to the plurality of assembled batteries;
An assembled battery device comprising: