WO2019245029A1 - 蓄電装置 - Google Patents

蓄電装置 Download PDF

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Publication number
WO2019245029A1
WO2019245029A1 PCT/JP2019/024701 JP2019024701W WO2019245029A1 WO 2019245029 A1 WO2019245029 A1 WO 2019245029A1 JP 2019024701 W JP2019024701 W JP 2019024701W WO 2019245029 A1 WO2019245029 A1 WO 2019245029A1
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WO
WIPO (PCT)
Prior art keywords
power storage
axis direction
storage device
extending
facing
Prior art date
Application number
PCT/JP2019/024701
Other languages
English (en)
French (fr)
Inventor
洋介 西村
伸之 長縄
健太 吉岡
芳昌 歳岡
Original Assignee
株式会社Ｇｓユアサ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Ｇｓユアサ filed Critical 株式会社Ｇｓユアサ
Priority to JP2020525821A priority Critical patent/JP7373133B2/ja
Priority to CN201980039574.0A priority patent/CN112335106A/zh
Priority to DE112019003141.4T priority patent/DE112019003141T5/de
Priority to US17/252,016 priority patent/US11876251B2/en
Publication of WO2019245029A1 publication Critical patent/WO2019245029A1/ja

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/74—Terminals, e.g. extensions of current collectors
    • H01G11/76—Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H01G11/12—Stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a power storage device including a plurality of power storage elements arranged in a predetermined direction and a frame arranged along the plurality of power storage elements.
  • the battery system includes a plurality of stacked battery cells 102, a pair of end plates 140 arranged at both ends of the plurality of battery cells 102, and a plurality of battery cells 102.
  • Connection bars 143 arranged on both side surfaces.
  • the connection bar 143 has a band shape, and a bent piece provided by bending both ends in the stacking direction of the battery cells 102 inward is fixed to the end plate 140. Thereby, the plurality of battery cells 102 are fixed in a stacked state.
  • the power storage device of the present embodiment includes: A plurality of power storage elements arranged in a first direction, A frame arranged along the plurality of power storage elements, With Each of the plurality of power storage elements has an outer surface facing a second direction orthogonal to the first direction, The frame is A first portion extending in the first direction along the outer surface; A second part extending in the second direction from at least a part of the first part toward a facing surface on which the power storage device is installed.
  • FIG. 1 is a perspective view of a power storage device according to the present embodiment.
  • FIG. 2 is an exploded perspective view of the power storage device.
  • FIG. 3 is a side view for explaining a state where the power storage device is arranged on an installation surface.
  • FIG. 4 is a sectional view taken along the line IV-IV in FIG.
  • FIG. 5 is a sectional view taken along a line VV in FIG.
  • FIG. 6 is a side view of a frame in a power storage device according to a modification.
  • FIG. 7 is a side view of a frame in a power storage device according to a modification.
  • FIG. 8 is a perspective view illustrating a conventional power storage device.
  • the power storage device of the present embodiment includes: A plurality of power storage elements arranged in a first direction, A frame arranged along the plurality of power storage elements, With Each of the plurality of power storage elements has an outer surface facing a second direction orthogonal to the first direction, The frame is A first portion extending in the first direction along the outer surface; A second part extending in the second direction from at least a part of the first part toward a facing surface on which the power storage device is installed.
  • the second portion when the power storage device is installed, the second portion extends from the first portion toward the facing surface facing the outer surface of the power storage element at a distance from the outer surface of the power storage device.
  • the second portion comes into contact with the opposing surface when the battery is bent or bent, the power storage device is supported, whereby the bending of the power storage device is suppressed. That is, the power storage device is less likely to bend.
  • the second portion may extend in the second direction from the entire region of the first portion in the first direction toward the facing surface.
  • the second portion can support the power storage device in a wide range in the first direction, so that the power storage device is less likely to bend. Moreover, since the second portion extending in the direction (second direction) orthogonal to the first direction is continuous throughout the first direction of the first portion extending in the first direction, the rigidity of the frame can be secured, and the power storage The device is less likely to bend.
  • a pair of the frames may be provided so as to be arranged in a third direction orthogonal to the first direction and the second direction.
  • the second portion supports the power storage device at a plurality of locations spaced apart in the third direction, so that the first direction of the power storage element is It is possible to suppress rattling or shaking of the power storage device along the orthogonal plane.
  • a terminating member arranged in the first direction with the power storage element outside the power storage element positioned at the end of the plurality of power storage elements, With The terminal member, When viewed from the first direction, a main body facing the power storage element positioned at the end, An extending portion extending in the second direction from the main body to at least a tip of the second portion.
  • the power storage device can be fixed in a state where each power storage element is spaced from the facing surface by fixing the extension of the terminal member to the predetermined surface, that is, using another member or the like.
  • the power storage device can be installed (fixed) with the power storage device itself in a state where each power storage element is separated from the facing surface.
  • the frame includes a connection member having conductivity, and an insulator, The insulator may be arranged between the plurality of power storage elements and the connection member.
  • insulation can be achieved by disposing the insulator between the power storage element and the conductive connection member.
  • the power storage element when a power storage device including a plurality of power storage elements is installed, the power storage element is placed on a surface facing the outer surface of the power storage element facing a direction orthogonal to the direction in which the power storage elements are arranged. Even if both ends of the power storage device are fixed in a separated state, a power storage device that is unlikely to bend can be provided.
  • the power storage device includes a plurality of power storage elements 2 arranged in a predetermined direction, and a frame 7 arranged along the plurality of power storage elements 2.
  • the power storage device 1 according to the present embodiment enables adjacent power storage elements 2 adjacent to the power storage elements 2 in a predetermined direction, a pair of terminal members 40 arranged on both sides of the plurality of power storage elements 2, and allows different power storage elements 2 to conduct with each other.
  • a bus bar 6 to be connected and an external input / output terminal 49 for inputting / outputting a plurality of power storage elements 2 are provided.
  • the frame 7 according to the present embodiment, together with the pair of terminal members 40, constitutes a holding member 4 that holds the plurality of power storage elements 2.
  • Each of the plurality of power storage elements 2 is a primary battery, a secondary battery, a capacitor, or the like.
  • the electric storage element 2 of the present embodiment is a chargeable / dischargeable non-aqueous electrolyte secondary battery. More specifically, power storage element 2 is a lithium ion secondary battery that utilizes electron transfer that occurs with the movement of lithium ions.
  • the electric storage element 2 is a so-called prismatic lithium ion secondary battery.
  • Each of the plurality of power storage elements 2 includes an electrode body, a case 21 that houses the electrode body together with the electrolytic solution, and an external terminal 22 that is at least partially exposed outside the case 21 (see FIG. 2).
  • the case 21 includes a case main body 211 having an opening, and a plate-shaped lid plate 216 that closes (closes) the opening of the case main body 211.
  • the case main body 211 of the present embodiment has a bottomed rectangular cylindrical shape, and the case 21 has a flat rectangular parallelepiped shape.
  • the case main body 211 includes a rectangular plate-shaped closing part 212 and a cylindrical body (peripheral wall) 213 connected to the periphery of the closing part 212.
  • the body 213 has a flat rectangular tube shape.
  • the body portion 213 has a pair of long wall portions 214 extending from the long side at the periphery of the closing portion 212 and a pair of short wall portions 215 extending from the short side at the periphery of the closing portion 212.
  • the cover plate 216 is a rectangular plate-shaped member that closes the opening of the case body 211.
  • a pair of external terminals 22 are arranged on the cover plate 216 with an interval.
  • the plurality of power storage elements 2 are arranged in a state where the long wall portions 214 of the case 21 (the case main body 211) face each other.
  • a predetermined direction (first direction) in which a plurality of power storage elements 2 are arranged is defined as an X axis in a rectangular coordinate system
  • a direction (third direction) in which short wall portion 215 of case body 211 faces is defined as a Y axis in a rectangular coordinate system
  • the direction in which the outer surface of the closing portion 212 faces (the second direction) is defined as the Z axis of the rectangular coordinate system.
  • the installation surface S1 of the present embodiment is a facing region (facing surface) in which the outer surfaces of the plurality of power storage elements 2 (for example, the outer surfaces of the closing portions 212) face each other with an interval between them when the power storage device 1 is installed.
  • the installation surface S1 of the present embodiment is a horizontal plane.
  • the adjacent member 3 is located between two power storage elements 2 adjacent in the X-axis direction (for example, between each of the power storage elements 2) or the endmost power storage element 2 in the X-axis direction and the power storage element 2. (In the example of this embodiment, a part of the holding member 4) (see FIG. 2).
  • the adjacent member 3 is formed of an insulating member such as a resin. Further, the adjacent member 3 forms a plurality of flow paths 35 through which the fluid for adjusting the temperature of the power storage element 2 can flow between the adjacent power storage elements 2 (see FIG. 5).
  • At least one of the plurality of flow paths 35 of the present embodiment is formed at the other end position of the adjacent member 3 in the Z-axis direction (a position corresponding to the closed portion 212 of the power storage element 2).
  • (Entrance) 35a formed at an end position (a position corresponding to each short wall portion 215 of the electricity storage element 2) on one side and the other side of the adjacent member 3 in the Y-axis direction from the opening (entrance) 35a. Extending.
  • the flow path 35 is bent at an intermediate position in the longitudinal direction.
  • the holding member 4 holds the plurality of storage elements 2 and the plurality of adjacent members 3 together by surrounding the plurality of storage elements 2 and the plurality of adjacent members 3 (see FIG. 1). Further, holding member 4 includes a pair of terminal members 40 arranged on both sides of a plurality of power storage elements 2 in the X-axis direction, and frame 7 arranged along the X-axis direction.
  • Each of the pair of terminal members 40 is arranged so as to sandwich the adjacent member 3 between the pair of terminal members 40 and the electric storage element 2 arranged at the end in the X-axis direction (see FIG. 2).
  • the power storage device 2 is arranged in the X-axis direction outside the power storage device 2 located at the end of the plurality of power storage devices 2.
  • Each of the pair of terminal members 40 extends along the YZ plane (a plane including the Y axis and the Z axis) and overlaps the power storage element 2 when viewed from the X axis direction. ) 41 and an extending portion (extending portion) 42 extending from the terminal member main body 41.
  • the terminal member main body 41 is a portion facing the power storage element 2 located at the end when viewed from the X-axis direction.
  • the terminal member main body 41 of the present embodiment is a rectangular portion corresponding to the electric storage element 2.
  • the extending portion 42 is a portion extending from the terminal member main body 41 along the Z-axis direction.
  • the extending portion 42 of the present embodiment extends along the Z-axis direction from a side 41A corresponding to the closing portion 212 of the power storage element 2 in the rectangular end member main body 41, and extends in the X-axis direction toward the other side in the Z-axis direction. It is a portion that extends so as to spread outside the. Therefore, the edge of extension portion 42 of the present embodiment located on the other side in the Z-axis direction is located on the other side in the Z-axis direction of closing portion 212 of power storage element 2 (see FIGS. 3 to 5).
  • the terminal member 40 of the present embodiment has two extending portions 42 arranged at an interval in the Y-axis direction.
  • Each of the two extending portions 42 has a hole 420 penetrating in the Z-axis direction (see FIG. 1).
  • the bolt 421 is screwed into a screw hole provided in the installation area S3, so that the two extending portions 42 are fixed to the installation area S3,
  • power storage device 1 is fixed to installation region S3 in a state where both ends (terminal member main body 41) in the X-axis direction of power storage device 1 are separated from installation region S3 in the Z-axis direction (see FIGS. 3 to 5).
  • the frame 7 includes, for example, a connection member 43 disposed along the plurality of power storage elements 2 and an insulator 5 disposed between the connection member 43 and the plurality of power storage elements 2 (see FIG. 1).
  • the material of the connection member 43 is different from the material of the insulator 5. Further, in the frame 7 of the present embodiment, the connection member 43 is separate from the insulator 5.
  • connection member 43 is made of, for example, a conductive member such as a metal.
  • the connecting member 43 of this embodiment is separate from the terminal member 40, and is fixed (coupled) to the terminal member 40 by the fixing member 45.
  • the pair of connecting members 43 are provided so as to be arranged in the Y-axis direction, and connect both ends of the pair of terminal members 40 in the Y-axis direction.
  • a pair of connecting members 43 are arranged on both sides of the plurality of power storage elements 2 in the Y-axis direction (see FIG. 2). Each of the pair of connection members 43 is arranged along the plurality of power storage elements 2. In addition, each of the pair of connecting members 43 is connected along the connecting member main body 44 extending in the X-axis direction along each short wall portion 215 of the plurality of power storage elements 2 and along each of the closing portions 212 of the plurality of power storage elements 2. And a second extending portion 47 extending from the first extending portion 46 along the Z-axis direction.
  • each of the pair of connecting members 43 includes a connected portion 48 extending in the Y-axis direction along a surface of the terminal member 40 facing outward in the X-axis direction from each end of the connecting member main body 44 in the X-axis direction.
  • the connection member main body 44 has a pair of beam portions 441 each extending in the X-axis direction at intervals in the Z-axis direction, and a pair of beam portions 441 each extending in the Z-axis direction and corresponding to the pair of beam portions 441 (opposing in the Z-axis direction). And a plurality of end connecting portions 442 for connecting the ends, and a plurality of connecting portions each extending in the Z-axis direction and connecting portions of the pair of beam portions 441 opposed to each other in the Z-axis direction at intermediate positions in the X-axis direction. And an intermediate connection portion 443.
  • the plurality of intermediate connectors 443 are arranged at intervals in the X-axis direction.
  • the connection member main body 44 is a portion that covers the short wall portions 215 of the plurality of power storage elements 2 and is provided with a plurality of windows (openings) penetrating in the Y-axis direction.
  • the pair of beam portions 441 include a first beam portion 441A extending along the first corner portion 21A of the case 21 formed by the cover plate 216 and the short wall portion 215 of the power storage element 2, and a closing portion 212 of the power storage element 2. And a second beam portion 441B extending along the second corner portion 21B of the case 21 constituted by the short wall portion 215 (see FIGS. 4 and 5).
  • the first beam portion 441A includes a first portion 4411 extending in the X-axis direction along the cover plate 216 at the first corner 21A of the case 21 of each power storage element 2 and a first corner of the case 21 of each power storage element 2 And a second portion 4412 extending in the X-axis direction along the short wall portion 215 in 21A.
  • the cross-sectional shape of the first beam portion 441A along the YZ plane is L-shaped.
  • the second beam portion 441B extends in the X-axis direction along the short wall portion 215 at the second corner portion 21B of the case 21 of each power storage element 2.
  • the first extending portion 46 of the present embodiment extends from the other end in the Z-axis direction of the connecting member main body 44 (for example, the other end in the Z-axis direction of the second beam portion 441B) in the Y-axis direction. It extends inward and also in the X-axis direction (see FIG. 2). In addition, the first extension portion 46 of the present embodiment extends from the entire region in the X-axis direction of the other end of the connection member body 44 in the Z-axis direction.
  • the first extending portions 46 are provided on the pair of connection members 43 in the Y-axis direction, respectively, and the pair of connection members 43 are on both sides of the plurality of power storage elements 2 in the Y-axis direction.
  • the pair of first extending portions 46 cover both ends in the Y-axis direction (ends disposed on both outer sides in the Y-axis direction) of the closed portion 212 of the power storage device 2 (ends). 4 and 5).
  • the second extending portion 47 extends along at least part of the first extending portion 46 in the X-axis direction along the Z-axis direction (see FIG. 2).
  • the phrase “the second extending portion 47 extends along the Z-axis direction” means that the extending direction of the second extending portion 47 includes a component in the Z-axis direction.
  • the second extending portion 47 of the present embodiment extends from the entire area of the first extending portion 46 in the X-axis direction to the other side in the Z-axis direction.
  • the second extending portion 47 of the present embodiment includes an inclined portion 470 that is continuous with the first extending portion 46 and extends along the Z-axis direction while being inclined with respect to the Z-axis direction.
  • the inclined portion 470 of the present embodiment is inclined such that a portion located on the other side in the Z-axis direction is located on the inner side in the Y-axis direction (see FIGS. 4 and 5). Further, the inclined portion 470 has a flat plate shape.
  • the distal end in the Z-axis direction of the parallel portion 471 of the present embodiment is located inside (one side) in the Z-axis direction from the distal end (the distal end located on the other side in the Z-axis direction) of the extending portion 42 of the terminal member 40. ing.
  • the insulator 5 has an insulating property and is arranged between the connection member 43 and the plurality of power storage elements 2 (see FIG. 2). Further, a pair of insulators 5 are arranged on both sides of the plurality of power storage elements 2 in the Y-axis direction. Each of the pair of insulators 5 is arranged along a plurality of power storage elements 2. Furthermore, each of the pair of insulators 5 covers at least a region of the connection member 43 facing the plurality of power storage elements 2. Specifically, each insulator 5 extends along the main body covering portion 50 that covers a surface of the connecting member main body 44 facing each power storage element 2, and the closing portion 212 of each of the plurality of power storage elements 2 from the main body covering portion 50. It has a first covering part (first part) 51 and a second covering part (second part) 52 extending from the first covering part 51 along the Z-axis direction.
  • the pair of main body covering portions 50 include a pair of beam covering portions 53 that insulate between the pair of beam portions 441 and the power storage element 2, and a pair of insulated between the pair of end connection portions 442 and the power storage element 2. , And a plurality of intermediate covering portions 55 for insulating the plurality of intermediate connecting portions 443 and the power storage element 2 from each other.
  • Each covering portion 53, 54, 55 has a shape corresponding to the beam portion 441, the end portion connecting portion 442, and the intermediate connecting portion 443 of the connecting member 43.
  • the cover-plate-side covering portion 53A which is a beam covering portion covering the first beam portion 441A of the pair of beam covering portions 53, is a first portion inside the first beam portion 441A (on the side of the electric storage element 2).
  • a first inner portion 531 that extends inward in the Y-axis direction and extends in the X-axis direction from the boundary position between the 4411 and the second portion 4412 to cover the surface of the first portion 4411 facing the cover plate 216 side,
  • the first inner portion 531 extends from the front end in the Y-axis direction (the inner end in the Y-axis direction) to one side in the Z-axis direction and extends in the X-axis direction, so that the front end surface of the first portion 4411 in the Y-axis direction.
  • a second inner portion 532 that covers the first inner portion 531 and extends from the outer end in the Y-axis direction (a boundary position between the first portion 4411 and the second portion 4412) to the other side in the Z-axis direction and the X-axis direction.
  • the closing portion side covering portion 53B which is the beam covering portion covering the second beam portion 441B of the pair of beam covering portions 53, is arranged in the Z-axis direction inside the second beam portion 441B (on the side of the electric storage element 2). It has a fourth inner portion 534 that extends.
  • Each of the pair of end covering portions 54 extends in the Z-axis direction and covers a surface of the end connecting portion 442 facing the power storage element 2 side.
  • Each of the plurality of intermediate covering portions 55 extends in the Z-axis direction and covers a surface of the intermediate connecting portion 443 facing the power storage element 2 side (see FIG. 2).
  • the first covering portion 51 is a portion that covers the surface of the connection member 43 facing the closing portion 212 of each power storage element 2. Specifically, it is a portion that covers a surface of the first extension portion 46 facing the closing portion 212 of each power storage element 2.
  • the first covering portion 51 is continuous with an end of the main body covering portion 50 in the Z-axis direction and extends along the Y-axis direction. (See FIGS. 2, 4, and 5).
  • the first covering portion 51 of the present embodiment extends from the entire area in the X-axis direction of the other end in the Z-axis direction of the main body covering portion 50 (for example, the fourth inner portion 534) (FIGS. 4 and 5). reference).
  • the first covering portion 51 of the present embodiment covers an end of the closed portion 212 of the power storage element 2 that is located outside in the Y-axis direction.
  • the first covering portions 51 are provided on the pair of insulators 5 in the Y-axis direction, respectively. Both ends in the Y-axis direction are covered.
  • the second covering portion 52 is a portion that covers the surface of the second extending portion 47 facing inward in the Z-axis direction.
  • the second covering portion 52 is continuous with the end of the first covering portion 51 in the Y-axis direction and extends along the Z-axis direction. Further, the second covering portion 52 extends from at least a part of the first covering portion 51 in the X-axis direction along the Z-axis direction.
  • the second covering portion 52 of the present embodiment extends from the entire region of the first covering portion 51 in the X-axis direction to the other side in the Z-axis direction (see FIG. 2).
  • the second covering portion 52 of the present embodiment extends to a position on one side in the Z-axis direction from a tip (a tip located on the other side in the Z-axis direction) of the extension portion 42 of the terminal member 40 ( 4 and 5). Further, the second covering portion 52 of the present embodiment is continuous with the first covering portion 51 and extends along the Z-axis direction while being inclined with respect to the Z-axis direction. And a parallel portion 521 extending parallel to the Z-axis direction and a tip portion 522 continuous with the parallel portion 521 and extending on both sides in the Y-axis direction.
  • the second covering portion 52 of the present embodiment together with the installation surface S1 (the opposing region S2), defines the guide channel 38 that guides the fluid to each channel 35 in the X-axis direction.
  • the inclined portion 520 covers a surface of the inclined portion 470 of the second extension portion 47 facing one side in the Z-axis direction.
  • the inclined portion 520 of the present embodiment is inclined such that a portion located on the other side in the Z-axis direction is located on the inner side in the Y-axis direction. Further, the inclined portion 520 has a flat plate shape.
  • the parallel portion 521 covers an inner surface of the parallel portion 471 of the second extension portion 47 in the Y-axis direction.
  • the distal end portion 522 extends from the outer edge (the other side) of the parallel portion 521 in the Z-axis direction.
  • the distal end portion 522 covers the distal end surface of the parallel portion 471 of the second extending portion 47 (for example, a surface facing the other side in the Z-axis direction). Further, the end surface (tip surface) on the extension side of the tip portion 522 is a flat surface.
  • the tip portion 522 is in contact with the facing region S2 (see FIGS. 3 to 5).
  • the distal end portion 522 of this embodiment is indirectly in contact with the facing region S2. Specifically, it is indirectly in contact with the facing area S2 via the seal member 8.
  • the material of the seal member 8 is, for example, softer than the material of the insulator 5.
  • the frame 7 forms a first portion by the first extending portion 46 of the connecting member 43 and the first covering portion 51 of the insulator 5, and the second extending portion 47 of the connecting member 43 and the insulator 5 And the second covering portion 52 constitute a second portion.
  • the extending portion 42 of the terminal member 40 extends at least to the distal end (the distal end portion 522) of the second covering portion 52 of the insulator 5.
  • the extending portion 42 extends from the front end (the front end portion 522) of the second covering portion 52 to a position on the other end side in the Z-axis direction.
  • the bus bar 6 is a plate-shaped member having conductivity such as metal (see FIG. 1). Bus bar 6 conducts between external terminals 22 of power storage element 2 or between external terminal 22 of power storage element 2 and external input / output terminal 49.
  • a plurality of bus bars 6 (the number corresponding to the number of the plurality of power storage elements 2 and the number of the external input / output terminals 49) are provided in the power storage device 1.
  • the plurality of bus bars 6 of the present embodiment connect (conduct) all of the plurality of power storage elements 2 included in the power storage device 1 in series.
  • the first covering portion 51 moves from the first covering portion 51 toward the facing area S ⁇ b> 2 facing the outer surface of the closing portion 212 of the power storage element 2 at a distance. Because the second covering portion 52 extends along the Z-axis direction, the second covering portion 52 comes into contact with the facing region S2 when the power storage device 1 is bent or when the power storage device 1 is about to be bent. The power storage device 1 is supported, so that the power storage device 1 is hardly bent.
  • the second covering portion 52 extends along the Z-axis direction from the first covering portion 51 in the entire region in the X-axis direction, the second covering portion 52 is in the X-axis direction. Since the power storage device 1 is supported in a wide range, the power storage device 1 is less likely to bend. Furthermore, according to the power storage device 1 of the present embodiment, since the second extending portion 47 extending along the Z-axis direction is continuous in the entire region in the X-axis direction of the first extending portion 46 extending in the X-axis direction. Also, the rigidity of the frame 7 (for example, the connection member 43) can be secured.
  • the power storage device 1 of the present embodiment since the frame 7 (for example, the insulator 5) is provided in a pair so as to be arranged in the Y-axis direction, the power storage device 1 is provided at two places where the second covering portions 52 are arranged in the Y-axis direction.
  • rattling and shaking of the power storage device 1 along a plane (YZ plane) orthogonal to the X-axis direction of the power storage element 2 can be suppressed.
  • each power storage element 2 is spaced from the facing region S2. Both ends of the power storage device 1 can be fixed to the installation region S3, that is, the power storage device 1 is installed alone without using other members and the like, with each power storage element 2 being separated from the facing region S2 ( Fixed).
  • the guide channel 38 is defined by the second covering portion 52 of the insulator 5 and the installation surface S1 (the facing region S2), and the second covering portion 52 has the inclined portion 520.
  • the width in the Y-axis direction of one part in the Z-axis direction of the guide flow path 38 is increased by the inclination of the inclined part 520 (inclination such that the one part in the Z-axis direction becomes wider in the Y-axis direction).
  • the inlet 35a of the flow path 35 formed between the power storage element 2 and the adjacent member 3 can be arranged in a wider range in the Y-axis direction.
  • the frame 7 (for example, the distal end portion 522) indirectly abuts the facing region S2 via the seal member 8, and the material of the seal member 8 is changed to the frame 7 (for example, the insulator 5).
  • the surface of the opposing region S2 has an irregular shape, or the surface of a portion (for example, a tip portion 522) of the frame 7 that indirectly abuts the opposing region S2 has an irregular shape. Even if the frame 7 is inclined or the surface of a portion (for example, the tip portion 522) indirectly abutting against the facing region S2 of the frame 7 is inclined with respect to the surface of the facing region S2, Be close.
  • the power storage device of the present invention is not limited to the above embodiment, and it is needless to say that various changes can be made without departing from the spirit of the present invention.
  • the configuration of one embodiment can be added to the configuration of another embodiment, and a part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Further, a part of the configuration of an embodiment can be deleted.
  • the frame 7 includes the connection member 43 formed of a conductive member such as a metal and the insulator 5 formed of a member having an insulating property such as a resin. It may include a member and an insulating coating covering the surface of the skeleton member. Note that the frame 7 may include at least one of a conductive member and an insulating member.
  • the shape of the frame 7 is such that the first portion extending in the X-axis direction along the closed portion 212 of the plurality of power storage elements 2 and at least a part of the first portion in the X-axis direction are opposed to the facing region S2. Any shape may be used as long as it has a second portion extending along the axial direction, and is not limited to the shape of the above-described embodiment.
  • a modification of the shape of the frame 7 will be described with reference to the frame 7 including a skeleton member having conductivity and an insulating coating covering the surface of the skeleton member.
  • the second portion may extend from a part of the first portion in the X-axis direction.
  • the frame 7 includes a main body portion 70 extending in the X-axis direction along the short wall portion 215 of the power storage device 2 and a first portion extending in the X-axis direction along the closing portion 212 of the power storage device 2. 71, and a second portion 72 extending along a Z-axis direction from a part of the first portion 71 in the X-axis direction (for example, a central region in the X-axis direction).
  • the second portion 72 is configured to extend from only a part of the first portion 71 in the X-axis direction, when the power storage device 1 is installed in a state where each power storage element 2 is separated from the facing region S2, In the central region in the X-axis direction that is easily deflected by being separated from both ends of the power storage device 1 in the X-axis direction, the second covering portion 52 extends along the Z-axis direction from the first covering portion 51 to support the power storage device 1. Therefore, the bending of the power storage device 1 can be reliably suppressed.
  • the second portion 72 may extend from a plurality of positions in the X-axis direction of the first portion 71.
  • the second portion 72 may extend along the Z-axis direction one by one from a plurality of positions (for example, two positions) in the X-axis direction of the first portion 71.
  • the pair of second extension portions 47 may have the same shape, and may be arranged substantially symmetrically with respect to the center axis C of the main body portion 70 in the X-axis direction.
  • the second portion 72 is configured to extend from only a part of the first portion 71 in the X-axis direction, when the power storage device 1 is installed in a state where each power storage element 2 is separated from the facing region S2, Since the second portion 72 extends from the first portion 71 along the Z-axis direction and supports the power storage device 1 at a plurality of positions in the X-axis direction, bending of the power storage device 1 can be suppressed.
  • the frame 7 may not have the main body part 70.
  • a plurality of frames 7 including the first portion 71 and the second portion 72 may be provided on the other side in the Z-axis direction with respect to the closed portion 212 of each power storage element 2 so as to be arranged in the Y-axis direction.
  • a plurality of units may be provided so as to be arranged in the X-axis direction.
  • the second portion 72 may have a stepped or curved shape when viewed from the X-axis direction. Further, the second portion 72 may have one of an inclined portion and a parallel portion. When the second part 72 includes only the parallel part, for example, the second part 72 may extend in parallel with the Z-axis direction from an end located inside the first part 71 in the Y-axis direction.
  • connection member 43 and the shape of the insulator 5 may correspond (may be substantially the same) or may be different.
  • the second covering portion 52 of the insulator 5 is located on the other side in the Z-axis direction of the second extending portion 47 of the connecting member 43 from the tip located on the other side in the Z-axis direction. Side position.
  • the dimension of the connection member 43 in the Z-axis direction may be shorter than the dimension of the connection member 43 in the above-described embodiment in the Z-axis direction.
  • the connection member 43 is disposed so as to cover the short wall portions 215 of the plurality of power storage elements 2. It may be a band shape (band shape, long plate shape).
  • the insulator 5 extends from the first covering portion 51 extending in the X-axis direction along the closing portions 212 of the plurality of power storage elements 2 and at least a part of the first covering portion 51 in the X-axis direction to the facing region S2.
  • a second covering portion 52 extending along the opposite Z-axis direction. That is, when the connection member 43 has a band shape or the like, the insulator 5 may constitute a first portion or a second portion of the frame 7. Note that the dimension of the insulator 5 in the Z-axis direction may be shorter than the dimension of the connecting member 43 in the Z-axis direction.
  • the connecting member 43 may constitute the first portion or the second portion of the frame 7. Good.
  • the second extension portion 47 of the connection member 43 may extend along the Z-axis direction toward the facing region S2.
  • second portion 72 of frame 7 may not be in contact with opposed region S2. Also in this case, since the second portion 72 extends from the first portion 71 toward the facing region S2 when the power storage device 1 is installed, the second portion 72 faces when the power storage device 1 is bent. The power storage device 1 is supported by being in contact with the region S2, and thus the bending of the power storage device 1 is suppressed. That is, the power storage device is less likely to bend.
  • the frame 7 (the distal end portion 522 of the insulator 5 of the above embodiment) may directly contact the facing region S2. Further, both ends of the power storage device 1 may be fixed to the installation area S3 by locations other than the terminal member 40. Furthermore, both ends of power storage device 1 may be fixed to installation area S3 by fixing members different from members included in power storage device 1.
  • the position of the facing region S2 in the Z-axis direction may be different from the position of the installation region S3 in the Z-axis direction. For example, a step is provided between the facing region S2 and the installation region S3. Is also good.
  • the installation area S3 may extend in a direction different from the direction in which the facing area S2 extends. Further, the installation area S3 may be discontinuous with the facing area S2.
  • the facing region S2 may be a horizontal plane (floor surface), and the installation region S3 may be a wall surface.
  • the terminal member 40 may be fixed to the installation area S3 by a fixing member other than the bolt 421, welding, or the like. Further, only one end member 40 may be provided, or three or more end members may be provided. One or three or more extension portions 42 of the terminal member 40 may be provided for one terminal member main body 41. For example, extending portion 42 may extend from the entire area of side 41 ⁇ / b> A corresponding to closing portion 212 of power storage element 2 in terminal member body 41. The extending portion 42 of the terminal member 40 only needs to extend at least from the terminal member main body 41 to the distal end (for example, the distal end portion 522) of the second coating portion 52 in the Z-axis direction along the Z-axis direction.
  • the space defined by the insulator 5 and the installation surface S1 is used not only as the guide flow path 38 but also as a region for arranging wirings for connecting each member constituting the power storage device 1 or connecting each member to the outside. Is also good.
  • the number of power storage elements 2 included in power storage device 1 is not limited to a plurality, and may be one. In other words, the number of power storage elements 2 included in power storage device 1 may be at least one.
  • SYMBOLS 1 Electric storage apparatus, 2 ... Electric storage element, 20 ... Electrode body, 21 ... Case, 21A ... First corner part, 21B ... Second corner part, 22 ... External terminal, 211 ... Case main body, 212 ... Closed part, 213 ... Body part, 214: long wall part, 215 ... short wall part, 216 ... lid plate, 217 ... gas discharge valve, 3 ... adjacent member, 315 ... bolt, 35 ... flow path, 35a ... inlet (opening), 35b ...
  • connection member body 441: Beam portion, 441A: First beam portion, 441B: Second beam portion, 4411: First portion, 4412: Second portion, 442: End connection portion, 443: Intermediate connection portion, 45 ...

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Abstract

本実施形態では、第一方向に並ぶ複数の蓄電素子と、前記複数の蓄電素子に沿って配置されるフレームと、を備え、前記複数の蓄電素子は、それぞれ、前記第一方向と直交する第二方向に向いた外面を有し、前記フレームは、前記外面に沿って前記第一方向に延びる第一部位と、前記第一部位の少なくとも一部から、前記蓄電装置が設置される対向面に向けて前記第二方向に延びる第二部位と、を有する、ことを特徴とする。

Description

蓄電装置
　本発明は、所定方向に並んだ複数の蓄電素子と該複数の蓄電素子に沿って配置されたフレームとを備えた蓄電装置に関する。
　従来、所定方向に並んだ複数の蓄電素子と該複数の蓄電素子に沿って配置されたフレームとを備えたバッテリシステムが知られている（例えば、特許文献１参照）。具体的に、このバッテリシステムは、図８に示すように、積層された複数の電池セル１０２と、複数の電池セル１０２の両端に配置された一対のエンドプレート１４０と、複数の電池セル１０２の両側面に配置された連結バー１４３と、を備える。連結バー１４３は、帯状であり、電池セル１０２の積層方向における両端を内側に折曲して設けた折曲片をエンドプレート１４０に固定している。これにより、複数の電池セル１０２が積層状態に固定される。
　ところで、バッテリシステム（蓄電装置）が設置される場合に、電池セル１０２がこの電池セル１０２の底面と対向する対向面から離れた状態でバッテリシステム（蓄電装置）の両端が固定されると、バッテリシステムにおける両端の間に位置する中央部分が、バッテリシステムの両端と比べて沈む、即ち、バッテリシステムが撓んでしまうおそれがあった。
特開２００９－１７０２５８号公報
　そこで、本実施形態では、複数の蓄電素子を備える蓄電装置が設置されたときに、蓄電素子の並び方向と直交する方向を向いた蓄電素子の外面と対向する対向面から蓄電素子が離れた状態で蓄電装置の両端が固定されても、撓み難い蓄電装置を提供することを目的とする。
　本実施形態の蓄電装置は、
　第一方向に並ぶ複数の蓄電素子と、
　前記複数の蓄電素子に沿って配置されるフレームと、
　を備え、
　前記複数の蓄電素子は、それぞれ、前記第一方向と直交する第二方向に向いた外面を有し、
　前記フレームは、
　　前記外面に沿って前記第一方向に延びる第一部位と、
　　前記第一部位の少なくとも一部から、前記蓄電装置が設置される対向面に向けて前記第二方向に延びる第二部位と、を有する。
図１は、本実施形態に係る蓄電装置の斜視図である。 図２は、前記蓄電装置の分解斜視図である。 図３は、前記蓄電装置が設置面に配置された状態を説明するための側面図である。 図４は、図３のＩＶ－ＩＶ位置における断面図である。 図５は、図３のＶ－Ｖ位置における断面図である。 図６は、変形例に係る蓄電装置におけるフレームの側面図である。 図７は、変形例に係る蓄電装置におけるフレームの側面図である。 図８は、従来の蓄電装置を説明するための斜視図である。
　本実施形態の蓄電装置は、
　第一方向に並ぶ複数の蓄電素子と、
　前記複数の蓄電素子に沿って配置されるフレームと、
　を備え、
　前記複数の蓄電素子は、それぞれ、前記第一方向と直交する第二方向に向いた外面を有し、
　前記フレームは、
　　前記外面に沿って前記第一方向に延びる第一部位と、
　　前記第一部位の少なくとも一部から、前記蓄電装置が設置される対向面に向けて前記第二方向に延びる第二部位と、を有する。
　かかる構成によれば、蓄電装置を設置したときに、蓄電素子の外面と間隔をあけた状態で対向する対向面に向けて第一部位から第二部位が延びているため、蓄電装置が撓んだとき又は撓もうとしたときに第二部位が対向面に当接することで蓄電装置が支持され、これにより蓄電装置の撓みが抑えられる。即ち、蓄電装置が撓みにくくなる。
　前記蓄電装置では、
　前記第二部位は、前記第一部位の前記第一方向における全域から、前記対向面に向けて前記第二方向に延びてもよい。
　かかる構成によれば、第二部位が第一方向における広い範囲で蓄電装置を支持できるため、蓄電装置がより撓み難い。しかも、第一方向において延びる第一部位の第一方向の全域において該第一方向と直交する方向（第二方向）に延びる第二部位が連続しているため、フレームの剛性も確保でき、蓄電装置がより撓みにくくなる。
　前記蓄電装置では、
　前記フレームは、前記第一方向及び前記第二方向と直交する第三方向に並ぶように、一対設けられてもよい。
　かかる構成によれば、フレームが第三方向に並ぶように一対設けられるため、第二部位が第三方向に間隔をあけた複数箇所において蓄電装置を支持することにより、蓄電素子の第一方向と直交する面に沿った蓄電装置のがたつきや揺れを抑えることができる。
　前記蓄電装置では、
　前記複数の蓄電素子のうち最も端に位置する蓄電素子の外側で該蓄電素子と前記第一方向において並ぶ終端部材、
　を備え、
　前記終端部材は、
　　前記第一方向から見て、前記最も端に位置する蓄電素子と対向する本体部と、
　　前記本体部から少なくとも前記第二部位の先端まで前記第二方向に延びる延出部と、を有してもよい。
　かかる構成によれば、終端部材の延出部を所定の面に固定することで、各蓄電素子が対向面と間隔をあけた状態で蓄電装置を固定できる、即ち、他の部材等を用いることなく、蓄電装置単体で、各蓄電素子が対向面から離れた状態で該蓄電装置を設置（固定）できる。
　前記蓄電装置では、
　前記フレームは、導電性を有する接続部材と、インシュレータとを備え、
　前記複数の蓄電素子と前記接続部材との間に前記インシュレータが配置されてもよい。
　かかる構成によれば、蓄電素子と導電性を有する接続部材との間にインシュレータが配置されることで絶縁を図ることができる。
　以上より、本実施形態によれば、複数の蓄電素子を備える蓄電装置が設置されたときに、蓄電素子の並び方向と直交する方向を向いた蓄電素子の外面と対向する対向面から蓄電素子が離れた状態で蓄電装置の両端が固定されても、撓み難い蓄電装置を提供することができる。
　以下、本発明の一実施形態について、図１～図５を参照しつつ説明する。尚、本実施形態の各構成部材（各構成要素）の名称は、本実施形態におけるものであり、背景技術における各構成部材（各構成要素）の名称と異なる場合がある。
　蓄電装置は、図１及び図２に示すように、所定方向に並ぶ複数の蓄電素子２と、複数の蓄電素子２に沿って配置されるフレーム７と、を備える。本実施形態の蓄電装置１は、所定方向において蓄電素子２と隣り合う隣接部材３と、複数の蓄電素子２の両側に配置される一対の終端部材４０と、異なる蓄電素子２同士を導通可能に接続するバスバ６と、複数の蓄電素子２の入出力を行う外部入出力用端子４９と、を備える。尚、本実施形態のフレーム７は、一対の終端部材４０と共に、複数の蓄電素子２を保持する保持部材４を構成する。
　複数の蓄電素子２のそれぞれは、一次電池、二次電池、キャパシタ等である。本実施形態の蓄電素子２は、充放電可能な非水電解質二次電池である。より具体的には、蓄電素子２は、リチウムイオンの移動に伴って生じる電子移動を利用したリチウムイオン二次電池である。この蓄電素子２は、いわゆる角型のリチウムイオン二次電池である。
　複数の蓄電素子２のそれぞれは、電極体と、電極体を電解液と共に収容するケース２１と、少なくとも一部がケース２１の外側に露出する外部端子２２と、を有する（図２参照）。
　ケース２１は、開口を有するケース本体２１１と、ケース本体２１１の開口を塞ぐ（閉じる）板状の蓋板２１６と、を有する。本実施形態のケース本体２１１は、有底角筒状であり、ケース２１は、扁平な直方体形状である。ケース本体２１１は、矩形板状の閉塞部２１２と、閉塞部２１２の周縁に接続される筒状の胴部（周壁）２１３と、を備える。胴部２１３は、偏平な角筒形状を有する。この胴部２１３は、閉塞部２１２の周縁における長辺から延びる一対の長壁部２１４と、閉塞部２１２の周縁における短辺から延びる一対の短壁部２１５とを有する。短壁部２１５が一対の長壁部２１４の対応する端部同士をそれぞれ接続することによって、扁平な角筒状の胴部２１３が形成される。蓋板２１６は、ケース本体２１１の開口を塞ぐ矩形板状の部材である。この蓋板２１６には、一対の外部端子２２が間隔をあけて配置されている。
　本実施形態の蓄電装置１では、複数の蓄電素子２は、ケース２１（ケース本体２１１）の長壁部２１４同士を互いに対向させた状態で並んでいる。
　以下では、複数の蓄電素子２が並ぶ所定方向（第一方向）を直交座標系のＸ軸とし、ケース本体２１１の短壁部２１５が対向する方向（第三方向）を直交座標系のＹ軸とし、閉塞部２１２の外面の向く方向（第二方向）を直交座標系のＺ軸とする。
　また、本実施形態の蓄電装置１は、図３～図５に示すように、設置面Ｓ１に設置される。本実施形態の設置面Ｓ１は、蓄電装置１が設置された状態において、複数の蓄電素子２の外面（例えば、閉塞部２１２の外面）が間隔をあけた状態で対向する対向領域（対向面）Ｓ２と、蓄電装置１のＸ軸方向における両端が固定される設置領域Ｓ３と、を含む。本実施形態の設置面Ｓ１は、水平面である。
　隣接部材３は、Ｘ軸方向に隣り合う二つの蓄電素子２の間（例えば、各蓄電素子２の間のそれぞれ）、又は、Ｘ軸方向の最も端の蓄電素子２と該蓄電素子２に対してＸ軸方向に並ぶ部材（本実施形態の例では、保持部材４の一部）との間に配置される（図２参照）。この隣接部材３は、樹脂等の絶縁性を有する部材によって構成される。また、隣接部材３は、隣接する蓄電素子２との間に該蓄電素子２の温度調整用の流体が流通可能な流路３５を複数形成する（図５参照）。本実施形態の複数の流路３５のうちの少なくとも一つの流路３５は、Ｚ軸方向における隣接部材３の他方側の端部位置（蓄電素子２の閉塞部２１２と対応する位置）に形成される開口（入口）３５ａから、Ｙ軸方向における隣接部材３の一方側及び他方側の端部位置（蓄電素子２の各短壁部２１５と対応する位置）に形成される開口（出口）３５ｂまで延びている。この流路３５は、長手方向の途中位置において曲がっている。
　保持部材４は、複数の蓄電素子２と複数の隣接部材３との周囲を囲むことにより、これら複数の蓄電素子２及び複数の隣接部材３をひとまとめに保持する（図１参照）。また、保持部材４は、Ｘ軸方向において複数の蓄電素子２の両側に配置される一対の終端部材４０と、Ｘ軸方向に沿って配置されるフレーム７と、を含む。
　一対の終端部材４０のそれぞれは、Ｘ軸方向の端に配置された蓄電素子２との間に隣接部材３を挟み込むように配置される（図２参照）。換言すると、複数の蓄電素子２のうち最も端に位置する蓄電素子２の外側で該蓄電素子２とＸ軸方向において並ぶ。これら一対の終端部材４０のそれぞれは、Ｙ－Ｚ面（Ｙ軸とＺ軸とを含む面）に沿って広がり且つＸ軸方向から見て蓄電素子２と重なる部位である終端部材本体（本体部）４１と、終端部材本体４１から延びる延設部（延出部）４２と、を有する。
　終端部材本体４１は、Ｘ軸方向から見て最も端に位置する蓄電素子２と対向する部位である。本実施形態の終端部材本体４１は、蓄電素子２と対応した矩形状の部位である。
　延設部４２は、終端部材本体４１からＺ軸方向に沿って延びる部位である。本実施形態の延設部４２は、矩形状の終端部材本体４１における蓄電素子２の閉塞部２１２と対応する辺４１ＡからＺ軸方向に沿って延びると共に、Ｚ軸方向における他方側ほどＸ軸方向の外側に広がるように延びる部位である。そのため、本実施形態の延設部４２のＺ軸方向における他方側に位置する端縁は、蓄電素子２の閉塞部２１２よりＺ軸方向における他方側に位置する（図３～図５参照）。
　本実施形態の終端部材４０は、Ｙ軸方向に間隔をあけて配置される二つの延設部４２を有する。二つの延設部４２は、それぞれ、Ｚ軸方向に貫通する穴４２０を有する（図１参照）。例えば、この穴４２０にボルト４２１が挿通された状態で、該ボルト４２１が設置領域Ｓ３に設けられたネジ穴に螺入されることで、二つの延設部４２が設置領域Ｓ３に固定され、これにより、蓄電装置１のＸ軸方向における両端（終端部材本体４１）が設置領域Ｓ３からＺ軸方向において離れた状態で、蓄電装置１は設置領域Ｓ３に固定される（図３～図５参照）。
　フレーム７は、例えば、複数の蓄電素子２に沿って配置される接続部材４３と、接続部材４３と複数の蓄電素子２との間に配置されるインシュレータ５と、を含む（図１参照）。本実施形態のフレーム７では、接続部材４３の材質は、インシュレータ５の材質と異なる。また、本実施形態のフレーム７では、接続部材４３は、インシュレータ５と別体である。
　接続部材４３は、例えば、金属等の導電性を有する部材によって構成されている。本実施形態の接続部材４３は、終端部材４０と別体であり、固定部材４５により終端部材４０に固定（連結）される。本実施形態の蓄電装置１では、一対の接続部材４３が、Ｙ軸方向に並ぶように設けられると共に、一対の終端部材４０におけるＹ軸方向の両方の端部同士を接続している。
　一対の接続部材４３は、Ｙ軸方向において複数の蓄電素子２の両側に配置される（図２参照）。これら一対の接続部材４３のそれぞれは、複数の蓄電素子２に沿って配置される。また、一対の接続部材４３のそれぞれは、複数の蓄電素子２のそれぞれの短壁部２１５に沿ってＸ軸方向に延びる接続部材本体４４と、複数の蓄電素子２のそれぞれの閉塞部２１２に沿って延びる第一延設部４６と、第一延設部４６からＺ軸方向に沿って延びる第二延設部４７と、を有する。さらに、一対の接続部材４３のそれぞれは、接続部材本体４４のＸ軸方向の各端部から終端部材４０におけるＸ軸方向の外側を向いた面に沿ってＹ軸方向に延びる被連結部４８を有する。
　接続部材本体４４は、Ｚ軸方向に間隔をあけてそれぞれがＸ軸方向に延びる一対の梁部４４１と、それぞれがＺ軸方向に延び且つ一対の梁部４４１の対応する（Ｚ軸方向に対向する）端部同士を接続する一対の端部接続部４４２と、それぞれがＺ軸方向に延び且つ一対の梁部４４１のＸ軸方向の途中位置におけるＺ軸方向に対向する部位同士を接続する複数の中間接続部４４３と、を有する。複数の中間接続部４４３は、Ｘ軸方向に間隔をあけて配置されている。換言すると、接続部材本体４４は、複数の蓄電素子２の短壁部２１５を覆うと共に、Ｙ軸方向に貫通する複数の窓（開口部）が設けられた部位である。
　一対の梁部４４１は、蓄電素子２の蓋板２１６と短壁部２１５とによって構成されるケース２１の第一角部２１Ａに沿って延びる第一梁部４４１Ａと、蓄電素子２の閉塞部２１２と短壁部２１５とによって構成されるケース２１の第二角部２１Ｂに沿って延びる第二梁部４４１Ｂと、によって構成される（図４、図５参照）。
　第一梁部４４１Ａは、各蓄電素子２のケース２１の第一角部２１Ａにおける蓋板２１６に沿ってＸ軸方向に延びる第一部位４４１１と、各蓄電素子２のケース２１の第一角部２１Ａにおける短壁部２１５に沿ってＸ軸方向に延びる第二部位４４１２と、を有する。この第一梁部４４１ＡのＹ－Ｚ面に沿った断面形状は、Ｌ字状である。
　第二梁部４４１Ｂは、各蓄電素子２のケース２１の第二角部２１Ｂにおける短壁部２１５に沿ってＸ軸方向に延びる。
　本実施形態の第一延設部４６は、接続部材本体４４のＺ軸方向の他方側の端部（例えば、第二梁部４４１ＢのＺ軸方向の他方側の端部）からＹ軸方向における内側に延びると共に、Ｘ軸方向にも延びる（図２参照）。また、本実施形態の第一延設部４６は、接続部材本体４４のＺ軸方向の他方側の端部のＸ軸方向における全域から延びている。さらに、本実施形態の蓄電装置１では、第一延設部４６がＹ軸方向において一対の接続部材４３にそれぞれ設けられると共に、一対の接続部材４３が複数の蓄電素子２のＹ軸方向における両側に配置されているため、一対の第一延設部４６は、蓄電素子２の閉塞部２１２のうちＹ軸方向における両端部（Ｙ軸方向における両外側に配置された端部）を被覆する（図４、図５参照）。
　第二延設部４７は、第一延設部４６のＸ軸方向における少なくとも一部から、Ｚ軸方向に沿って延びる（図２参照）。尚、第二延設部４７がＺ軸方向に沿って延びるとは、第二延設部４７の延出方向がＺ軸方向成分を含んでいることをいう。本実施形態の第二延設部４７は、第一延設部４６のＸ軸方向における全域から、Ｚ軸方向における他方側まで延びている。また、本実施形態の第二延設部４７は、第一延設部４６に連続し且つＺ軸方向に対して傾斜した状態でＺ軸方向に沿って延びる傾斜部位４７０と、傾斜部位４７０に連続し且つＺ軸方向に対して平行に延びる平行部位４７１と、を含む。本実施形態の傾斜部位４７０は、Ｚ軸方向における他方側に位置する部位ほどＹ軸方向における内側に位置するよう傾斜している（図４、図５参照）。また、傾斜部位４７０は平板状である。本実施形態の平行部位４７１のＺ軸方向における先端は、終端部材４０の延設部４２の先端（Ｚ軸方向における他方側に位置する先端）よりＺ軸方向において内側（一方側）に位置している。
　インシュレータ５は、絶縁性を有し、接続部材４３と複数の蓄電素子２との間に配置される（図２参照）。また、インシュレータ５は、Ｙ軸方向において複数の蓄電素子２の両側に一対配置される。これら一対のインシュレータ５のそれぞれは、複数の蓄電素子２に沿って配置される。さらに、一対のインシュレータ５のそれぞれは、接続部材４３における少なくとも複数の蓄電素子２と対向する領域を覆う。具体的に、各インシュレータ５は、接続部材本体４４における各蓄電素子２を向いた面を覆う本体被覆部５０と、本体被覆部５０から複数の蓄電素子２のそれぞれの閉塞部２１２に沿って延びる第一被覆部（第一部位）５１と、第一被覆部５１からＺ軸方向に沿って延びる第二被覆部（第二部位）５２と、を有する。
　一対の本体被覆部５０は、一対の梁部４４１と蓄電素子２との間の絶縁を図る一対の梁部被覆部５３と、一対の端部接続部４４２と蓄電素子２との絶縁を図る一対の端部被覆部５４と、複数の中間接続部４４３と蓄電素子２との絶縁を図る複数の中間被覆部５５と、を有する。各被覆部５３、５４、５５は、接続部材４３の梁部４４１、端部接続部４４２、中間接続部４４３と対応する形状を有する。
　一対の梁部被覆部５３のうちの第一梁部４４１Ａを被覆する梁部被覆部である蓋板側被覆部５３Ａは、第一梁部４４１Ａの内側（蓄電素子２側）において、第一部位４４１１と第二部位４４１２との境界位置からＹ軸方向の内側に向けて延びると共にＸ軸方向に延びることで、第一部位４４１１における蓋板２１６側を向いた面を覆う第一内側部５３１と、第一内側部５３１のＹ軸方向の先端（Ｙ軸方向の内側の端）からＺ軸方向の一方側に延びると共にＸ軸方向に延びることで、第一部位４４１１のＹ軸方向の先端面を覆う第二内側部５３２と、第一内側部５３１のＹ軸方向の外側の端（第一部位４４１１と第二部位４４１２との境界位置）からＺ軸方向の他方側に延びると共にＸ軸方向において延びることで、第二部位４４１２における短壁部２１５側を向いた面を覆う第三内側部５３３と、を有する。一対の梁部被覆部５３のうちの第二梁部４４１Ｂを被覆する梁部被覆部である閉塞部側被覆部５３Ｂは、第二梁部４４１Ｂの内側（蓄電素子２側）においてＺ軸方向に延びる第四内側部５３４等を有する。
　一対の端部被覆部５４のそれぞれは、Ｚ軸方向に延び且つ端部接続部４４２における蓄電素子２側を向いた面を覆う。複数の中間被覆部５５のそれぞれは、Ｚ軸方向に延び且つ中間接続部４４３における蓄電素子２側を向いた面を覆う（図２参照）。
　第一被覆部５１は、接続部材４３における各蓄電素子２の閉塞部２１２を向いた面を覆う部位である。具体的に、第一延設部４６における各蓄電素子２の閉塞部２１２を向いた面を覆う部位である。また、第一被覆部５１は、本体被覆部５０のＺ軸方向における端部と連続すると共に、Ｙ軸方向に沿って延びている。（図２、図４、図５参照）。本実施形態の第一被覆部５１は、本体被覆部５０（例えば、第四内側部５３４）のＺ軸方向の他方側の端部のＸ軸方向における全域から延びている（図４、図５参照）。また、本実施形態の第一被覆部５１は、蓄電素子２の閉塞部２１２のうちＹ軸方向における外側に位置する端部を被覆する。尚、本実施形態の蓄電装置１では、第一被覆部５１が、Ｙ軸方向において一対のインシュレータ５にそれぞれ設けられるため、一対の第一被覆部５１は、蓄電素子２の閉塞部２１２のうちＹ軸方向における両端部を被覆する。
　第二被覆部５２は、第二延設部４７におけるＺ軸方向の内側を向いた面を覆う部位である。また、第二被覆部５２は、第一被覆部５１のＹ軸方向における端部と連続すると共に、Ｚ軸方向に沿って延びる。さらに、第二被覆部５２は、第一被覆部５１のＸ軸方向における少なくとも一部から、Ｚ軸方向に沿って延びる。本実施形態の第二被覆部５２は、第一被覆部５１のＸ軸方向における全域から、Ｚ軸方向における他方側まで延びている（図２参照）。また、本実施形態の第二被覆部５２は、終端部材４０の延設部４２の先端（Ｚ軸方向における他方側に位置する先端）よりもＺ軸方向における一方側の位置まで延びている（図４、図５参照）。さらに、本実施形態の第二被覆部５２は、第一被覆部５１に連続し且つＺ軸方向に対して傾斜した状態でＺ軸方向に沿って延びる傾斜部位５２０と、傾斜部位５２０に連続し且つＺ軸方向に対して平行に延びる平行部位５２１と、平行部位５２１に連続し且つＹ軸方向における両側に延びる先端部位５２２と、を有する。本実施形態の第二被覆部５２は、設置面Ｓ１（対向領域Ｓ２）と共に、Ｘ軸方向において各流路３５に流体を案内する案内流路３８を区画している。
　傾斜部位５２０は、第二延設部４７の傾斜部位４７０のＺ軸方向における一方側を向いた面を被覆している。本実施形態の傾斜部位５２０は、Ｚ軸方向における他方側に位置する部位ほどＹ軸方向における内側に位置するよう傾斜している。また、傾斜部位５２０は平板状である。平行部位５２１は、第二延設部４７の平行部位４７１のＹ軸方向における内側の面を被覆している。先端部位５２２は、平行部位５２１のＺ軸方向における外側（他方側）の端縁から延びている。また、先端部位５２２は、第二延設部４７の平行部位４７１の先端面（例えば、Ｚ軸方向における他方側を向いた面）を被覆している。さらに、先端部位５２２の延出側の端面（先端面）は平坦な面である。本実施形態の先端部位５２２が、蓄電素子２の閉塞部２１２が対向領域Ｓ２から離れた状態で蓄電装置１のＸ軸方向における両端（一対の終端部材４０）が設置領域Ｓ３に固定された状態において、先端部位５２２は対向領域Ｓ２に当接している（図３～図５参照）。尚、本実施形態の先端部位５２２は、対向領域Ｓ２に対して間接に当接している。具体的には、シール部材８を介して対向領域Ｓ２に対して間接に当接している。シール部材８の材質は、例えば、インシュレータ５の材質よりも柔らかい。
　本実施形態では、フレーム７は、接続部材４３の第一延設部４６とインシュレータ５の第一被覆部５１とで第一部位を構成し、接続部材４３の第二延設部４７とインシュレータ５の第二被覆部５２とで第二部位を構成する。
　以上の保持部材４では、終端部材４０の延設部４２は、少なくともインシュレータ５の第二被覆部５２の先端（先端部位５２２）まで延びる。本実施形態の保持部材４では、延設部４２は、第二被覆部５２の先端（先端部位５２２）よりＺ軸方向における他端側の位置まで延びる。
　バスバ６は、金属等の導電性を有する板状の部材である（図１参照）。バスバ６は、蓄電素子２の外部端子２２同士、又は、蓄電素子２の外部端子２２と外部入出力用端子４９とを導通させる。バスバ６は、蓄電装置１において複数（複数の蓄電素子２の数及び外部入出力用端子４９の数と対応する数）設けられる。本実施形態の複数のバスバ６は、蓄電装置１に含まれる複数の蓄電素子２の全てを直列に接続する（導通させる）。
　以上の蓄電装置１によれば、蓄電装置１を設置したときに、蓄電素子２の閉塞部２１２の外面と間隔をあけた状態で対向する対向領域Ｓ２に向けて、第一被覆部５１から第二被覆部５２がＺ軸方向に沿って延びているため、蓄電装置１が撓んだとき又は蓄電装置１が撓もうとしたときに、第二被覆部５２が対向領域Ｓ２に当接することで蓄電装置１が支持され、これにより、蓄電装置１が撓み難い。しかも、本実施形態の蓄電装置１では、第二被覆部５２がＸ軸方向の全域において第一被覆部５１からＺ軸方向に沿って延びているため、第二被覆部５２がＸ軸方向における広い範囲で蓄電装置１を支持していることから、蓄電装置１がより撓み難い。さらに、本実施形態の蓄電装置１によれば、Ｘ軸方向において延びる第一延設部４６のＸ軸方向の全域においてＺ軸方向に沿って延びる第二延設部４７が連続しているため、フレーム７（例えば、接続部材４３）の剛性も確保できる。
　また、本実施形態の蓄電装置１では、フレーム７（例えば、インシュレータ５）がＹ軸方向に並ぶように一対設けられるため、第二被覆部５２がＹ軸方向に並ぶ二箇所において蓄電装置１を支持することにより、蓄電素子２のＸ軸方向と直交する面（Ｙ－Ｚ面）に沿った蓄電装置１のがたつきや揺れを抑えることができる。
　さらに、本実施形態の蓄電装置１では、終端部材４０の一対の延設部４２を設置領域Ｓ３に固定することで、各蓄電素子２の閉塞部２１２が対向領域Ｓ２と間隔をあけた状態で蓄電装置１の両端を設置領域Ｓ３に固定できる、即ち、他の部材等を用いることなく、蓄電装置１単体で、各蓄電素子２が対向領域Ｓ２から離れた状態で該蓄電装置１を設置（固定）できる。
　本実施形態の蓄電装置１では、案内流路３８がインシュレータ５の第二被覆部５２及び設置面Ｓ１（対向領域Ｓ２）により区画されると共に、第二被覆部５２が傾斜部位５２０を有するため、案内流路３８のＺ軸方向における一方側の部位のＹ軸方向における幅が、傾斜部位５２０の傾斜（Ｚ軸方向における一方側の部位ほどＹ軸方向において広がるような傾斜）の分だけ広くなり、これにより、蓄電素子２と隣接部材３との間に形成される流路３５の入口３５ａをＹ軸方向におけるより広い範囲に配置することができる。
　また、本実施形態の蓄電装置１では、フレーム７（例えば、先端部位５２２）がシール部材８を介して対向領域Ｓ２に間接に当接すると共に、シール部材８の材質がフレーム７（例えば、インシュレータ５）の材質よりも柔らかいことで、対向領域Ｓ２の表面が凹凸形状を有していたり、フレーム７の対向領域Ｓ２に間接に当接する部位（例えば、先端部位５２２）の表面が凹凸形状を有していたり、フレーム７の対向領域Ｓ２に間接に当接する部位（例えば、先端部位５２２）の表面が対向領域Ｓ２の表面に対して傾斜したりしていても、フレーム７が確実に対向領域Ｓ２に密接する。
　尚、本発明の蓄電装置は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。例えば、ある実施形態の構成に他の実施形態の構成を追加することができ、また、ある実施形態の構成の一部を他の実施形態の構成に置き換えることができる。さらに、ある実施形態の構成の一部を削除することができる。
　例えば、フレーム７は、金属等の導電性を有する部材により構成された接続部材４３と、樹脂等の絶縁性を有する部材により構成されたインシュレータ５と、を含んでいたが、導電性を有する骨組み部材と、該骨組み部材の表面を被覆する絶縁性被膜と、を含んでいてもよい。尚、フレーム７は、導電性を有する部材及び絶縁性を有する部材の少なくとも一方を含んでいればよい。
　また、フレーム７の形状は、複数の蓄電素子２の閉塞部２１２に沿ってＸ軸方向に延びる第一部位と、該第一部位のＸ軸方向における少なくとも一部から、対向領域Ｓ２に向かいＺ軸方向に沿って延びる第二部位と、を有する形状であればよく、上記実施形態の形状に限られない。以下、フレーム７の形状の変形例について、導電性を有する骨組み部材と、該骨組み部材の表面を被覆する絶縁性被膜と、を含むフレーム７を挙げて説明する。
　例えば、フレーム７において、第二部位は、第一部位のＸ軸方向における一部から延びていてもよい。図６に示すように、フレーム７は、蓄電素子２の短壁部２１５に沿ってＸ軸方向に延びる本体部位７０と、蓄電素子２の閉塞部２１２に沿ってＸ軸方向に延びる第一部位７１と、第一部位７１のＸ軸方向における一部（例えば、Ｘ軸方向における中央領域）からＺ軸方向に沿って延びる第二部位７２と、を有してもよい。第二部位７２が第一部位７１のＸ軸方向における一部のみから延びている構成であっても、各蓄電素子２が対向領域Ｓ２から離れた状態で蓄電装置１が設置されたときに、蓄電装置１の両端からＸ軸方向において離れていることにより撓みやすいＸ軸方向における中央領域において、第二被覆部５２が第一被覆部５１からＺ軸方向に沿って延びて蓄電装置１を支持するため、蓄電装置１の撓みを確実に抑えられる。
　また、フレーム７において、第二部位７２は、第一部位７１のＸ軸方向における複数の位置から延びていてもよい。例えば、図７に示すように、第二部位７２が第一部位７１のＸ軸方向における複数の位置（例えば、二つの位置）からそれぞれ一つずつＺ軸方向に沿って延びてもよい。一対の第二延設部４７は、それぞれ同一形状であると共に、本体部位７０のＸ軸方向における中心軸Ｃを挟んで略対称に配置されていてもよい。第二部位７２が第一部位７１のＸ軸方向における一部のみから延びている構成であっても、各蓄電素子２が対向領域Ｓ２から離れた状態で蓄電装置１が設置されたときに、第二部位７２が第一部位７１からＺ軸方向に沿って延びてＸ軸方向における複数の位置で蓄電装置１を支持することで、蓄電装置１の撓みを抑えられる。
　さらに、フレーム７が、本体部位７０を有していなくてもよい。この場合、第一部位７１及び第二部位７２で構成されるフレーム７が、各蓄電素子２の閉塞部２１２に対するＺ軸方向における他方側において、Ｙ軸方向に並ぶように複数設けられてもよいし、Ｘ軸方向に並ぶように複数設けられてもよい。
　第二部位７２は、Ｘ軸方向から見たとき、階段状や湾曲した形状であってもよい。また、第二部位７２は、傾斜部位或いは平行部位のうち一方を有していてもよい。第二部位７２が、平行部位のみを含む場合、例えば、第一部位７１のＹ軸方向における内側に位置する端部からＺ軸方向に対して平行に延びていてもよい。
　接続部材４３の形状とインシュレータ５の形状とは対応していてもよく（略同一であってもよく）、異なっていてもよい。例えば、図６及び図７のフレーム７において、インシュレータ５の第二被覆部５２は、接続部材４３の第二延設部４７のＺ軸方向における他方側に位置する先端より、Ｚ軸方向における他方側の位置まで延びていてもよい。また、接続部材４３のＺ軸方向における寸法が、上記実施形態の接続部材４３のＺ軸方向における寸法よりも短くてもよく、例えば、複数の蓄電素子２の短壁部２１５を覆うように配置された帯状（バンド状、長尺の板状）であってもよい。この場合、インシュレータ５が、複数の蓄電素子２の閉塞部２１２に沿ってＸ軸方向に延びる第一被覆部５１と、第一被覆部５１のＸ軸方向における少なくとも一部から、対向領域Ｓ２に向かいＺ軸方向に沿って延びる第二被覆部５２とを有していてもよい。即ち、接続部材４３が帯状等である場合には、インシュレータ５がフレーム７の第一部位や第二部位を構成してもよい。尚、インシュレータ５のＺ軸方向における寸法が、接続部材４３のＺ軸方向における寸法よりも短くてもよく、この場合、接続部材４３がフレーム７の第一部位や第二部位を構成してもよい。例えば、接続部材４３の第二延設部４７が対向領域Ｓ２に向いてＺ軸方向に沿って延びていてもよい。
　蓄電装置１の設置状態において、フレーム７の第二部位７２は、対向領域Ｓ２に当接していなくてもよい。この場合においても、蓄電装置１を設置したときに、対向領域Ｓ２に向けて第一部位７１から第二部位７２が延びているため、蓄電装置１が撓んだときに第二部位７２が対向領域Ｓ２に当接することで蓄電装置１が支持され、これにより蓄電装置１の撓みが抑えられる。即ち、蓄電装置が撓みにくくなる。
　蓄電装置１の設置状態において、フレーム７（上記実施形態のインシュレータ５の先端部位５２２）は、対向領域Ｓ２に対して直接に当接してもよい。また、蓄電装置１の両端は、終端部材４０以外の箇所により設置領域Ｓ３に固定されていてもよい。さらに、蓄電装置１の両端は、蓄電装置１に含まれる部材とは異なる固定部材により設置領域Ｓ３に固定されていてもよい。設置面Ｓ１において、対向領域Ｓ２のＺ軸方向における位置が、設置領域Ｓ３のＺ軸方向における位置と異なってもよく、例えば、対向領域Ｓ２と設置領域Ｓ３との間に段差が設けられていてもよい。また、設置領域Ｓ３は、対向領域Ｓ２の延びる方向とは異なる方向に延びてもよい。さらに、設置領域Ｓ３は、対向領域Ｓ２と非連続であってもよい。例えば、対向領域Ｓ２が水平面（床面）であると共に、設置領域Ｓ３は壁面であってもよい。
　終端部材４０は、ボルト４２１以外の固定部材や溶接等により設置領域Ｓ３に固定されてもよい。また、終端部材４０は、一つのみ設けられていてもよいし、三つ以上の複数設けられていてもよい。終端部材４０の延設部４２は、一つの終端部材本体４１に対して、一つ、或いは、三つ以上の複数設けられていてもよい。例えば、延設部４２は、終端部材本体４１における蓄電素子２の閉塞部２１２と対応する辺４１Ａの全域から延びていてもよい。終端部材４０の延設部４２は、少なくとも、終端部材本体４１からＺ軸方向に沿って第二被覆部５２のＺ軸方向における先端（例えば、先端部位５２２）まで延びていればよい。
　インシュレータ５と設置面Ｓ１とで区画される空間は、案内流路３８として用いる以外に、蓄電装置１を構成する各部材同士或いはこの各部材と外部とを接続する配線を配置する領域として用いてもよい。
　蓄電装置１に含まれる蓄電素子２の数は複数に限らず、一つであってもよい。換言すると、蓄電装置１に含まれる蓄電素子２の数は少なくとも一つであればよい。
　１…蓄電装置、２…蓄電素子、２０…電極体、２１…ケース、２１Ａ…第一角部、２１Ｂ…第二角部、２２…外部端子、２１１…ケース本体、２１２…閉塞部、２１３…胴部、２１４…長壁部、２１５…短壁部、２１６…蓋板、２１７…ガス排出弁、３…隣接部材、３１５…ボルト、３５…流路、３５ａ…入口（開口）、３５ｂ…出口（開口）、３８…案内流路、４…保持部材、４０…終端部材、４１…終端部材本体、４１Ａ…辺、４２…延設部、４２０…穴、４２１…ボルト、４３…接続部材、４４…接続部材本体、４４１…梁部、４４１Ａ…第一梁部、４４１Ｂ…第二梁部、４４１１…第一部位、４４１２…第二部位、４４２…端部接続部、４４３…中間接続部、４５…固定部材、４６…第一延設部、４７…第二延設部、４７０…傾斜部位、４７１…平行部位、４８…被連結部、４９…外部入出力用端子、５…インシュレータ、５０…本体被覆部、５１…第一被覆部（第一部位）、５２…第二被覆部（第二部位）、５２０…傾斜部位、５２１…平行部位、５２２…先端部位、５３…梁部被覆部（被覆部）、５３Ａ…蓋板側被覆部、５３Ｂ…閉塞部側被覆部、５３１…第一内側部、５３２…第二内側部、５３３…第三内側部、５３４…第四内側部、５４…端部被覆部（被覆部）、５５…中間被覆部（被覆部）、６…バスバ、７…フレーム、７０…本体部位、７１…第一部位、７２…第二部位、８…シール部材、１０２…電池セル、１４０…エンドプレート、１４３…連結バー、Ｓ１…設置面、Ｓ２…対向領域、Ｓ３…設置領域、Ｃ…中心軸
 

Claims (5)

  1. 　蓄電装置であって、
    　第一方向に並ぶ複数の蓄電素子と、
    　前記複数の蓄電素子に沿って配置されるフレームと、
    　を備え、
    　前記複数の蓄電素子は、それぞれ、前記第一方向と直交する第二方向に向いた外面を有し、
    　前記フレームは、
    　　前記外面に沿って前記第一方向に延びる第一部位と、
    　　前記第一部位の少なくとも一部から、前記蓄電装置が設置される対向面に向けて前記第二方向に延びる第二部位と、を有する、ことを特徴とする蓄電装置。
  2. 　前記第二部位は、前記第一部位の前記第一方向における全域から、前記対向面に向けて前記第二方向に延びている、請求項１記載の蓄電装置。
  3. 　前記フレームは、前記第一方向及び前記第二方向と直交する第三方向に並ぶように、一対設けられている、請求項１又は請求項２記載の蓄電装置。
  4. 　前記複数の蓄電素子のうち最も端に位置する蓄電素子の外側で該蓄電素子と前記第一方向において並ぶ終端部材、
    　を備え、
    　前記終端部材は、
    　　前記第一方向から見て、前記最も端に位置する蓄電素子と対向する本体部と、
    　　前記本体部から少なくとも前記第二部位の先端まで前記第二方向に延びる延出部と、を有する、請求項１～請求項３のいずれか１項に記載の蓄電装置。
  5. 　前記フレームは、導電性を有する接続部材と、インシュレータとを備え、
    　前記複数の蓄電素子と前記接続部材との間に前記インシュレータが配置される、請求項１～請求項４のいずれか１項に記載の蓄電装置。
     
     
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009087773A (ja) * 2007-09-28 2009-04-23 Mitsubishi Motors Corp バッテリユニット
JP2009170258A (ja) * 2008-01-16 2009-07-30 Sanyo Electric Co Ltd バッテリシステム
WO2017104535A1 (ja) * 2015-12-15 2017-06-22 豊田鉄工株式会社 電池ケース

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8465866B2 (en) 2010-04-21 2013-06-18 Samsung Sdi Co., Ltd. Battery module including a pressure control unit
KR20150024724A (ko) 2013-08-27 2015-03-09 삼성에스디아이 주식회사 배터리 팩
JP6184938B2 (ja) 2014-12-25 2017-08-23 本田技研工業株式会社 蓄電モジュールが搭載される電動車両
US20170365827A1 (en) * 2015-03-31 2017-12-21 Sanyo Electric Co., Ltd. Battery system
JP6449107B2 (ja) 2015-06-04 2019-01-09 本田技研工業株式会社 蓄電装置
JP6310990B1 (ja) 2016-10-26 2018-04-11 本田技研工業株式会社 バッテリモジュール固定構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009087773A (ja) * 2007-09-28 2009-04-23 Mitsubishi Motors Corp バッテリユニット
JP2009170258A (ja) * 2008-01-16 2009-07-30 Sanyo Electric Co Ltd バッテリシステム
WO2017104535A1 (ja) * 2015-12-15 2017-06-22 豊田鉄工株式会社 電池ケース

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