WO2020184068A1 - Dispositif de stockage d'énergie - Google Patents

Dispositif de stockage d'énergie Download PDF

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Publication number
WO2020184068A1
WO2020184068A1 PCT/JP2020/005942 JP2020005942W WO2020184068A1 WO 2020184068 A1 WO2020184068 A1 WO 2020184068A1 JP 2020005942 W JP2020005942 W JP 2020005942W WO 2020184068 A1 WO2020184068 A1 WO 2020184068A1
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WO
WIPO (PCT)
Prior art keywords
power storage
storage element
element unit
exterior body
axis direction
Prior art date
Application number
PCT/JP2020/005942
Other languages
English (en)
Japanese (ja)
Inventor
貴瑛 石川
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
Publication of WO2020184068A1 publication Critical patent/WO2020184068A1/fr

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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
    • H01M50/20—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
    • 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
    • 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
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • 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
    • H01M50/262—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
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/278—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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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.
  • Patent Document 1 discloses a power storage device including a battery module composed of a plurality of battery cells arranged side by side and an exterior body accommodating the battery module.
  • a reinforcing member which is a frame body surrounding the outer periphery of the battery module is arranged.
  • the reinforcing member includes a first reinforcing material and two types of second reinforcing materials.
  • the first reinforcing members are arranged at both ends in the arrangement direction of the battery cells.
  • One second reinforcing member is arranged at both ends in the lateral direction intersecting the arrangement direction of the battery cells.
  • the other second reinforcing material is arranged at both ends in the vertical direction intersecting the arrangement direction of the battery cells.
  • the number of connecting members should be small. Therefore, the binding force of the pair of end members on the battery module may be non-uniform in any direction orthogonal to the arrangement direction of the power storage elements, and the binding force on the battery module may not be properly performed.
  • the present invention has been made by the inventor of the present application paying new attention to the above problems, and is a power storage device including a plurality of power storage elements, and can appropriately suppress swelling of the plurality of power storage elements with a simple configuration.
  • An object of the present invention is to provide a power storage device.
  • the power storage device is a power storage device including a power storage element unit and an exterior body accommodating the power storage element unit, and the power storage element units are arranged side by side in the first direction.
  • the exterior body has a contact portion that abuts on the end face of the power storage element unit in the first direction, and the contact portion is the first on the end face.
  • the ends in three directions abut on the ends corresponding to positions where the movement of the two end members in the first direction is not constrained by any of the one or more connecting members.
  • FIG. 1 is a perspective view showing the appearance of the power storage device according to the embodiment.
  • FIG. 2 is an exploded perspective view showing each component when the power storage device according to the embodiment is disassembled.
  • FIG. 3 is an exploded perspective view showing the configuration of the power storage element unit according to the embodiment.
  • FIG. 4 is a partial cross-sectional view showing the structural relationship between the power storage element unit and the exterior body according to the embodiment.
  • FIG. 5 is a diagram showing a configuration of a power storage element unit and an exterior body according to the first modification of the embodiment.
  • FIG. 6 is a diagram showing a state in which the power storage element unit according to the first modification of the embodiment is housed in the main body.
  • FIG. 7 is a diagram showing a state in which the power storage element unit according to the second modification of the embodiment is housed in the main body.
  • the inventors of the present application have found that the following problems occur with respect to the conventional power storage device.
  • the conventional power storage device described in Patent Document 1 the first reinforcing materials arranged at both ends in the arrangement direction of the plurality of power storage elements in the battery module are connected by four second reinforcing materials arranged vertically and horizontally of the battery module.
  • a structure is adopted in which the battery modules are restrained in the alignment direction.
  • deformation or damage to the exterior body when at least one power storage element included in the battery module expands is suppressed.
  • the number of connecting members should be small. Due to restrictions based on the specifications required for the power storage device (size and shape of the exterior body, or the weight of the power storage device), the connecting members that connect the members (end members) at both ends of the battery module are attached to the top, bottom, left, and right of the battery module. It may not be possible to place it.
  • the vertical width of the end member may be formed smaller than the vertical width of the end face of the battery module. In such a case, the binding force of the pair of end members on the battery module may be non-uniform in any direction orthogonal to the arrangement direction of the power storage elements, and the binding force on the battery module may not be properly performed.
  • the power storage device is a power storage device including a power storage element unit and an exterior body accommodating the power storage element unit, and the power storage element units are arranged side by side in the first direction.
  • the exterior body has a contact portion that abuts on the end face of the power storage element unit in the first direction, and the contact portion is the first on the end face.
  • the ends in three directions abut on the ends corresponding to positions where the movement of the two end members in the first direction is not constrained by any of the one or more connecting members.
  • the connecting member connecting the end members at both ends is not arranged at the end of the power storage element unit in the third direction (for example, the height direction) due to restrictions due to the shape or size of the exterior body or the like. Even so, the power storage element unit can be appropriately restrained. Specifically, at a height position where the connecting member is not arranged, the binding force of the end members at both ends is unlikely to act on the plurality of power storage elements. However, in the power storage device according to this aspect, the contact portion of the exterior body comes into contact with the end face of the power storage element unit in the height direction in which the connecting member is not arranged. As a result, the restraining force at the height position where the connecting member is not arranged can be assisted by the exterior body.
  • the power storage device is a power storage device capable of suppressing swelling of a plurality of power storage elements with a simple configuration.
  • the contact portion may be in contact with one of the two end members.
  • the abutting portion of the exterior body abuts on the end member, the pressing force of the abutting portion can be dispersed by the end member and applied to the power storage element row composed of a plurality of power storage elements. As a result, the power storage element row can be stably constrained.
  • the exterior body When the third direction is the vertical direction, the exterior body has a box-shaped main body portion having an opening for accommodating the power storage element unit at the upper end, and the one or more connecting members.
  • Each of the two end members may be connected at a position different from the lower end portion of the plurality of power storage elements, and the contact portion may come into contact with the lower end portion of the end face of the power storage element unit.
  • the contact portion abuts on the power storage element unit at a position close to the bottom wall portion, which is a high-strength portion of the box-shaped exterior body. Therefore, when one or more power storage elements expand, the contact portion can apply a relatively large binding force to the power storage element unit. Thereby, the expansion of one or more power storage elements can be suppressed more reliably.
  • the contact portion may be formed in a size that contacts the entire end surface of the power storage element unit.
  • the exterior body may sandwich the power storage element unit by two contact portions that come into contact with each of the end faces on both sides of the power storage element unit in the first direction.
  • the power storage element units can be sandwiched from the directions facing each other by the contact portions having the same size and shape. As a result, the power storage element module is restrained more stably.
  • the power storage device is a power storage device including a power storage element unit and an exterior body accommodating the power storage element unit, and the power storage element unit includes a plurality of power storage elements and the plurality of power storage devices. End members arranged at both ends in the alignment direction of the elements and connecting members connecting the two end members at positions other than one end in the height direction where each intersects the alignment direction.
  • the exterior body has a main body portion in which an opening for accommodating the power storage element unit is formed at the other end portion in the height direction, and the main body portion is the said main body portion of the power storage element unit. It may have a contact portion that abuts on the one end portion in the height direction on the end face in the alignment direction.
  • the power storage element unit can be appropriately restrained even when the connection member connecting the end members at both ends is not arranged at any end in the height direction of the power storage element unit.
  • the abutting portion of the exterior body abuts on the end face of the power storage element unit in the height direction in which the connecting member is not arranged.
  • the restraining force at the height position where the connecting member is not arranged can be assisted by the exterior body. It is not necessary to use a separate member to assist the binding force, and the exterior body having a role of accommodating and protecting the power storage element unit can be provided with the assisting function of the binding force.
  • the contact portion abuts on the power storage element unit at a position close to the bottom wall portion, which is a high-strength portion of the box-shaped exterior body. Therefore, when one or more power storage elements expand, the contact portion can apply a relatively large binding force to the power storage element unit.
  • the power storage device according to this aspect is a power storage device capable of suppressing swelling of a plurality of power storage elements with a simple configuration.
  • the direction in which a plurality of power storage elements are arranged is defined as the X-axis direction.
  • the direction in which the electrode terminals are arranged in one power storage element or the direction opposite to the short side surface of the container of the power storage element is defined as the Y-axis direction.
  • the Z-axis direction is defined as the alignment direction of the main body and the lid, the alignment direction of the storage element and the bus bar, or the vertical direction in the exterior body of the power storage device.
  • the plus side in the X-axis direction indicates the arrow direction side of the X-axis
  • the minus side in the X-axis direction indicates the side opposite to the plus side in the X-axis direction.
  • the Y-axis direction and the Z-axis direction indicates the arrow direction side of the X-axis
  • the minus side in the X-axis direction indicates the side opposite to the plus side in the X-axis direction.
  • FIG. 1 is a perspective view showing the appearance of the power storage device 1 according to the embodiment.
  • FIG. 2 is an exploded perspective view showing each component when the power storage device 1 according to the embodiment is disassembled.
  • the power storage device 1 is a device that can charge electricity from the outside and discharge electricity to the outside. Specifically, the power storage device 1 is used as a battery for driving a moving body such as an automobile, a motorcycle, a watercraft, a snowmobile, an agricultural machine, a construction machine, or a railroad vehicle for an electric railway, or for starting an engine. Used. Examples of the above-mentioned automobiles include electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and gasoline vehicles. Examples of the above-mentioned railway vehicle for electric railways include trains, monorails, and linear motor cars. The power storage device 1 is used as a stationary battery or the like used for home use or a generator.
  • the power storage device 1 includes a plurality of power storage elements 20 and an exterior body 10 accommodating the plurality of power storage elements 20.
  • eight power storage elements 20 are housed in the exterior body 10.
  • the number of power storage elements 20 included in the power storage device 1 is not limited to eight.
  • the power storage device 1 may include a plurality of power storage elements 20.
  • the plurality of power storage elements 20 arranged in the X-axis direction are constrained in the X-axis direction by the restraint member 50, thereby forming one power storage element unit 25.
  • the X-axis direction is an example of the first direction.
  • the restraint member 50 will be described later with reference to FIGS. 3 to 6.
  • the exterior body 10 has a main body 12 for accommodating the power storage element unit 25, a bus bar plate 17 arranged above the power storage element unit 25, and a lid 11 arranged so as to cover the top of the bus bar plate 17. doing.
  • a plurality of bus bars 33 are held on the bus bar plate 17, and the plurality of bus bars 33 are covered with bus bar covers 60 and 70.
  • a connection unit 80 including a control circuit and the like is arranged between the bus bar plate 17 and the lid 11.
  • the exterior body 10 is a rectangular (box-shaped) container (module case) that constitutes the outer shell of the power storage device 1. That is, the exterior body 10 is a member that fixes the power storage element unit 25, the bus bar plate 17, and the like at predetermined positions and protects them from impacts and the like.
  • the exterior body 10 includes polycarbonate (PC), polypropylene (PP), polyethylene (PE), polystyrene (PS), polyphenylene sulfide resin (PPS), polyphenylene ether (PPE (including modified PPE)), polyethylene terephthalate (PET).
  • PC polycarbonate
  • PP polypropylene
  • PE polyethylene
  • PS polystyrene
  • PPS polyphenylene sulfide resin
  • PPE polyphenylene ether
  • PET polyethylene terephthalate
  • PBT Polybutylene terephthalate
  • PEEK polyether ether ketone
  • PFA tetrafluoroethylene / perfluoroalkyl vinyl ether
  • PES polyether sulfone
  • ABS resin or them. It is formed of an insulating member such as a composite material of.
  • the lid 11 of the exterior body 10 is a rectangular member that closes the opening 15 of the main body 12, and has an external terminal 91 on the positive electrode side and an external terminal 92 on the negative electrode side.
  • the external terminals 91 and 92 are electrically connected to a plurality of power storage elements 20 via the connection unit 80 and the bus bar 33, and the power storage device 1 receives electricity from the outside via the external terminals 91 and 92. It charges and discharges electricity to the outside.
  • the external terminals 91 and 92 are made of a conductive member made of metal such as aluminum or an aluminum alloy.
  • the main body 12 is a bottomed rectangular tubular housing (housing) in which an opening 15 for accommodating the power storage element unit 25 is formed.
  • the main body 12 has a bolt hole 19a at the lower end of the main body 12 for fixing the power storage device 1 to another member such as an automobile body. Is provided. Further, recesses 19 recessed inward are formed at both ends of the lower portion of the main body 12 in the Y-axis direction.
  • the recess 19 is a portion that forms a space for inserting a bolt into the bolt hole 19a and fastening the bolt to another member. That is, the recess 19 in the main body 12 is a portion necessary for fixing the power storage device 1, and as shown in FIG.
  • a protrusion 19b protruding inward is formed on the back side of the recess 19.
  • the other member for example, when the vehicle body in an automobile or the power storage device 1 is arranged in the engine room, a member other than the power storage device 1 in the engine room can be assumed.
  • the power storage element 20 is a secondary battery (single battery) capable of charging electricity and discharging electricity, and more specifically, a non-aqueous electrolyte secondary battery such as a lithium ion secondary battery.
  • the power storage element 20 has a flat rectangular parallelepiped shape (square), and in the present embodiment, as described above, eight power storage elements 20 are arranged in the X-axis direction, and eight power storage elements 20 are arranged.
  • the power storage element 20 is collectively restrained by the restraint member 50.
  • the power storage element 20 is not limited to the non-aqueous electrolyte secondary battery, and may be a secondary battery other than the non-aqueous electrolyte secondary battery, or may be a capacitor.
  • the power storage element 20 may be a primary battery that can use the stored electricity without being charged by the user.
  • the power storage element 20 may be a battery using a solid electrolyte.
  • the power storage element 20 is provided with a metal container 21, and a metal electrode terminal 22 (positive electrode terminal and negative electrode terminal) is provided on the lid portion of the container 21.
  • the electrode terminals 22 (positive electrode terminal and negative electrode terminal) are arranged so as to project from the lid portion of the container 21 toward the bus bar plate 17 side (upward, that is, toward the positive side in the Z-axis direction).
  • An electrode body also referred to as a power storage element or a power generation element
  • a current collector positive electrode current collector and negative electrode current collector
  • an electrolytic solution non-aqueous electrolyte
  • the bus bar 33 is a rectangular plate-shaped member that is arranged on at least two power storage elements 20 while being held by the bus bar plate 17 and electrically connects the electrode terminals 22 of the at least two power storage elements 20 to each other. is there.
  • the bus bar 33 is formed of a conductive member made of metal such as copper, copper alloy, aluminum, and aluminum alloy. In the present embodiment, five bus bars 33 are used to connect two power storage elements 20 in parallel to form four sets of power storage element groups, and to connect the four sets of power storage element groups in series. ing.
  • the mode of electrical connection of the eight power storage elements 20 is not particularly limited, and all of the eight power storage elements 20 may be connected in series by the seven bus bars.
  • the connection unit 80 is a unit having a plurality of bus bars, a control board, and the like, and electrically connects the eight power storage elements 20 with the external terminals 91 and 92.
  • the control board included in the connection unit 80 has a plurality of electric components, and these plurality of electric components form a detection circuit for detecting the state of each power storage element 20, a control circuit for controlling charging and discharging, and the like. There is. In this embodiment, the connection unit 80 is fixed to the bus bar plate 17.
  • the bus bar plate 17 is a resin member that holds the bus bar 33. More specifically, the bus bar plate 17 is a member that holds a plurality of bus bars 33, a connection unit 80, and other wirings (not shown), and can regulate the positions of these members.
  • the bus bar plate 17 is provided with a plurality of bus bar openings 17a that hold each of the plurality of bus bars 33 and expose a part of each of the plurality of bus bars 33 to the side of the plurality of power storage elements 20.
  • the bus bar plate 17 is fixed by adhesion to the surface on which the electrode terminals 22 of the plurality of power storage elements 20 are arranged.
  • an exhaust path extending in the X-axis direction is provided along the arrangement of the gas discharge valves of the plurality of power storage elements 20.
  • the adhesive can be placed in an area other than this exhaust path and the bus bar opening 17a. That is, the plurality of power storage elements 20 can be joined to the bus bar plate 17 via an adhesive at a position where the gas discharge valve and the electrode terminal 22 are not arranged.
  • the fixing of the bus bar plate 17 and the plurality of power storage elements 20 is not limited to adhesion, and a fitting structure having a concave-convex shape, a locking structure having a snap-fit shape, and the like can be adopted.
  • the bus bar plate 17 is fixed to the main body 12 of the exterior body 10. Specifically, the bus bar plate 17 is located in the X-axis direction at each end of the Y-axis direction on one side and the other side of the bus bar opening 17a arranged on one side and the other side in the Y-axis direction. It has a plurality of plate-side fixing portions along the line.
  • the main body 12 of the exterior body 10 has a plurality of exterior side fixing portions at positions where a pair of side wall portions 13 facing each other in the Y-axis direction correspond to the plurality of plate side fixing portions, and the plurality of plate side fixing portions. And a plurality of exterior side fixing parts are fixed.
  • both the bus bar plate 17 and the main body 12 are made of a resin material, they can be joined by heat welding in addition to bonding, fitting, and locking. It is also possible to join by heat caulking in which one of the fixed portions has a pin shape and the other has a hole shape.
  • the fixing portions of the bus bar plate 17 and the main body portion 12 are arranged along the X-axis direction on one side and the other side in the Y-axis direction, but Y on one side and the other side in the X-axis direction. There may be a fixed portion between the bus bar plate 17 and the main body portion 12 along the axial direction.
  • Each of the bus bar covers 60 and 70 is a resin member that covers the plurality of bus bars 33 from above, and plays a role of electrically insulating the plurality of bus bars 33 and the connection unit 80.
  • FIG. 3 is an exploded perspective view showing the configuration of the power storage element unit 25 according to the embodiment.
  • the power storage element unit 25 has a power storage element row 24 composed of a plurality of power storage element 20 arranged in the X-axis direction and an arrangement direction (X-axis) with respect to the power storage element row 24. It has a restraining member 50 that gives a binding force in the direction). More specifically, the rectangular container 21 of each of the plurality of power storage elements 20 has a pair of long side surfaces 21a and a pair of short side surfaces 21b. Each of the plurality of power storage elements 20 is arranged in the X-axis direction in a posture in which the long side surface 21a faces the X-axis direction (a posture in which the short side surface 21b is parallel to the X-axis direction).
  • spacers 42 are arranged on both sides of each power storage element 20 in the X-axis direction, and end spacers 41 are arranged on both ends of the power storage element row 24 in the X-axis direction. That is, in the present embodiment, nine spacers 42 and two end spacers 41 are arranged for eight power storage elements 20.
  • the eight power storage elements 20, the nine spacers 42, and the two end spacers 41 arranged in the X-axis direction are collectively referred to as a “power storage element row 24”.
  • Each of the plurality of power storage elements 20 may have an insulating film (not shown) arranged along the outer surface of the container body of the container 21.
  • the restraint member 50 that surrounds the power storage element row 24 from the X-axis direction and the Y-axis direction is arranged with respect to the power storage element row 24 configured in this way.
  • the restraint member 50 is an end member 51 arranged at both ends in the first direction (X-axis direction), which is the arrangement direction of the plurality of power storage elements 20, and one or more connecting members 53 connecting the two end members 51. And have.
  • the end members 51 are arranged on both sides of the power storage element row 24 in the second direction (Y-axis direction).
  • the connecting member 53 connects the two end members 51 at predetermined positions in the third direction (Z-axis direction, height direction).
  • the connecting member 53 As shown in FIG. 3, the connecting member 53 according to the present embodiment has three plate-shaped portions arranged in the Z-axis direction and elongated in the X-axis direction, and these three plates are formed. It has a structure in which shaped parts are connected. Therefore, one connecting member 53 can be expressed as "three connecting members". However, in the present embodiment, one member that connects one end of the two end members 51 in the Y-axis direction will be described as one connecting member 53. That is, in the present embodiment, the two end members 51 are connected by the connecting members 53 (that is, the two connecting members 53) on both sides in the Y-axis direction. As a result, the movement of the two end members 51 in the X-axis direction is restricted.
  • the power storage element row 24 arranged between the two end members 51 receives a binding force in the X-axis direction from the restraining member 50.
  • the expansion of each of the plurality of power storage elements 20 included in the power storage element row 24 is suppressed.
  • the end surface 52 of the power storage element unit 25 in the X-axis direction is formed by the outer surfaces of the two end members 51.
  • the restraint member 50 is formed of a high-strength material such as iron or an aluminum alloy.
  • the restraining member 50 that applies a binding force in the X-axis direction to the power storage element row 24 is a state in which the power storage element row 24 is sandwiched between the two end members 51 from both sides in the X-axis direction and pressed, and the two connecting members. It is formed by connecting each of the 53 to the end member 51. For this connection, for example, laser welding is used.
  • the end member 51 and one or more connecting members 53 may be integrally provided. That is, it is not essential to connect the end member 51 and the connecting member 53 by welding or the like.
  • the portion parallel to the end surface 52 of the power storage element unit 25 and the portion extended in the direction orthogonal to the end member 51 are treated as the "end member 51". It can also be treated as a "connecting member 53".
  • each of the two connecting members 53 holds the two end members 51 at positions other than the lower end portion (the end portion on the minus side in the Z-axis direction) of the two end members 51. You are connected.
  • the lower end portion of the two end members 51 is not restricted from moving in the X-axis direction by either of the two connecting members 53. That is, in the power storage element unit 25 having the power storage element row 24 and the restraint member 50, the binding force of the restraint member 50 is unlikely to act on the lower end portion of the power storage element row 24.
  • the binding force of the exterior body 10 is applied to the end face 52 of the power storage element unit 25 in the Z-axis direction (height direction) where the binding force in the X-axis direction is difficult to act.
  • the structure is adopted.
  • the structural relationship between the power storage element unit 25 and the exterior body 10 will be described.
  • FIG. 4 is a partial cross-sectional view showing the structural relationship between the power storage element unit 25 and the exterior body 10. Specifically, in order to show the positional relationship between the two side wall portions 13 of the main body portion 12 of the exterior body 10 in the X-axis direction and the power storage element unit 25, the power storage element unit 25 is viewed from the Y-axis direction. Is shown in the side view of, and the main body portion 12 is shown in a cross section parallel to the XZ plane. The uneven shape existing at both ends in the X-axis direction in the cross section of the main body 12 is omitted.
  • the inner surface of the exterior body 10 in the X-axis direction is in contact with the end surface 52 of the power storage element unit 25 in the X-axis direction, thereby functioning as the contact portion 16.
  • the lower end portion (end portion 52a) of the end surface 52 of the power storage element unit 25 in the X-axis direction is in contact with the contact portion 16 of the exterior body 10, whereby the exterior body 10 is stored.
  • a binding force in the X-axis direction can be applied to the lower end portion of the element unit 25.
  • the power storage device 1 includes a power storage element unit 25 and an exterior body 10 that houses the power storage element unit 25.
  • the power storage element unit 25 includes a plurality of power storage elements 20 arranged side by side in the first direction (X-axis direction) and ends arranged at both ends of the plurality of power storage elements 20 in the first direction (X-axis direction). It has a member 51 and one or more connecting members 53 (two in this embodiment (see FIG. 3)) that connect the two end members 51.
  • Each of the one or more connecting members 53 is on the side of the plurality of power storage elements 20 in the second direction (Y-axis direction) intersecting the first direction (X-axis direction), and each of them is the first.
  • the exterior body 10 has a contact portion 16 that abuts on the end surface 52 in the first direction (X-axis direction) of the power storage element unit 25.
  • the contact portion 16 is an end portion 52a in the third direction (Z-axis direction) of the end surface 52, and the movement of the two end members 51 in the first direction (X-axis direction) is one or more of the connecting members 53. It abuts on the end 52a corresponding to a position not constrained by either.
  • the protruding portion 19b (see FIG. 2) is formed inside the main body portion 12 of the exterior body 10. Therefore, the connecting member 53 connecting the end members 51 at both ends of the power storage element unit 25 is not arranged at the lower end portion of the power storage element unit 25 in the Z-axis direction (height direction). In this case, at a height position where the connecting member 53 is not arranged, the binding force of the end members 51 at both ends is unlikely to act on the plurality of power storage elements 20. However, in the power storage device 1 according to the present embodiment, the contact portion 16 of the exterior body 10 abuts on the end surface 52 of the power storage element unit 25 in the height direction in which the connecting member 53 is not arranged. ..
  • the exterior body 10 can assist the binding force at the height position where the connecting member 53 is not arranged. It is not necessary to use a separate member to assist the binding force, and the exterior body 10 having a role of accommodating and protecting the power storage element unit 25 can be provided with the assisting function of the binding force.
  • each of the plurality of power storage elements 20 is in a state of receiving the binding force from the restraining member 50 and the exterior body 10 in a wide region of the long side surface 21a that easily swells. Therefore, the swelling of each of the plurality of power storage elements 20 is efficiently suppressed.
  • the power storage device 1 according to the present embodiment can suppress the swelling of the plurality of power storage elements 20 with a simple configuration.
  • Each of the plurality of power storage elements 20 can be fixed to the inner bottom surface 18 (see FIG. 4) formed by the bottom wall portion 14 of the main body portion 12.
  • the bottom surface (the surface on the minus side in the Z-axis direction) of the containers 21 of the plurality of power storage elements 20 is adhered to the inner bottom surface 18 by an adhesive.
  • the expansion of the power storage element 20 in the X-axis direction is suppressed by the restraint member 50 and the contact portion 16, and the movement of the power storage element 20 in the Z-axis direction (particularly toward the plus side in the Z-axis direction). Movement) is suppressed by the inner bottom surface 18 (bottom wall portion 14). That is, the deformation or displacement of each of the plurality of power storage elements 20 in various directions can be effectively suppressed by the combination of the exterior body 10 and the restraint member 50.
  • the strength, vibration resistance, impact resistance, etc. of the power storage element 1 as a whole are improved.
  • This effect can also be obtained by fixing surfaces other than the bottom surface of the power storage element unit 25 (both sides of the power storage element unit 25 in the Y-axis direction, or / and both sides in the X-axis direction, etc.) to the main body 12 by adhesion or the like. can get.
  • an adhesive is interposed between the power storage element unit 25 and the inner surface of the exterior body 10, there is no problem even if the adhesive comes into contact with the restraint member 50.
  • the restraint member 50 may be fixed to the inner surface of the exterior body 12 with an adhesive or the like.
  • one of the restraint member 50 and the exterior body 12 can function as a reinforcing member for improving the strength of the other.
  • the method of fixing the power storage element unit 25 to the exterior body 10 is not limited to adhesion with an adhesive.
  • the power storage element unit 25 may be fixed to the inner surface of the exterior body 10 by heat-welding the inner surface of the exterior body 10 to any portion of the electric element unit 25.
  • the power storage element unit 25 may be mechanically fixed to the inner surface of the exterior body 10 by providing a hole or a protrusion that fits with any part of the power storage element unit 25 on the inner surface of the exterior body 10.
  • the contact portion 16 contacts one of the two end members 51. That is, the contact portion 16 of the exterior body 10 does not directly abut on the power storage element row 24 composed of the plurality of power storage elements 20, but abuts on the end member 51 arranged at the end of the power storage element row 24. .. Therefore, the pressing force of the contact portion 16 can be dispersed by the end member 51 and applied to the power storage element row 24. As a result, the power storage element row 24 can be stably restrained.
  • the exterior body 10 when the third direction (Z-axis direction) is the vertical direction, is a box-shaped main body having an opening 15 formed at the upper end for accommodating the power storage element unit 25. It has a part 12.
  • Each of the one or more connecting members 53 connects the two end members 51 at positions different from the lower ends of the plurality of power storage elements 20.
  • the contact portion 16 contacts the lower end portion (end portion 52a) of the end surface 52 of the power storage element unit 25.
  • the contact portion 16 contacts the power storage element unit 25 at a position close to the bottom wall portion 14 (see FIG. 4), which is a high-strength portion of the box-shaped exterior body 10. Therefore, when one or more power storage elements 20 expand, the contact portion 16 can apply a relatively large binding force to the power storage element unit 25. Thereby, the expansion of one or more power storage elements 20 can be suppressed more reliably.
  • the box-shaped exterior body 10 having the opening 15 is manufactured by resin molding, the closer to the bottom wall 14 on the opposite side of the opening 15 for removing the mold, the more the inner surface of the side wall 13 facing the opening 15 is manufactured. The intervals are narrowly formed.
  • the side wall portion 13 is formed in a shape in which the inner surface is slightly inclined outward as the distance from the bottom wall portion 14 increases. Therefore, it is also possible to use the portion where the distance between the inner surfaces of the pair of side wall portions 13 facing each other is narrowed as the contact portion 16 that applies a binding force to the power storage element unit 25.
  • the contact portion 16 is formed to have a size of contacting the entire end surface 52 of the power storage element unit 25.
  • the entire inner surface of the side wall portion 13 of the main body portion 12 can function as the contact portion 16.
  • the contact portion 16 can resist a large local force.
  • the power storage element unit 25 is restrained more stably.
  • the exterior body 10 is formed by two contact portions 16 that come into contact with each of the end faces 52 on both sides of the power storage element unit 25 in the first direction (X-axis direction).
  • the power storage element unit 25 is sandwiched.
  • the power storage element unit 25 is sandwiched by the contact portions 16 having the same size and shape from the directions facing each other. As a result, the power storage element unit 25 is restrained more stably.
  • the power storage device 1 includes a power storage element unit 25 and an exterior body 10 that houses the power storage element unit 25.
  • the power storage element unit 25 includes a plurality of power storage elements 20, end members 51 arranged at both ends of the plurality of power storage elements 20 in the arrangement direction (X-axis direction), and one or more connection members 53.
  • Each of the one or more connecting members 53 connects the two end members 51 at positions other than one end in the height direction (the end on the minus side in the Z-axis direction) intersecting the alignment direction.
  • the exterior body 10 has a main body portion 12 in which an opening 15 for accommodating the power storage element unit 25 is formed at the other end portion in the height direction (the end portion on the plus side in the Z-axis direction).
  • the main body portion 12 has an abutting portion 16 that abuts on the one end portion (the end portion on the minus side in the Z-axis direction) of the power storage element unit 25 in the height direction on the end surface 52 in the alignment direction.
  • the exterior body 10 can assist the binding force at the height position where the connecting member 53 is not arranged. It is not necessary to use a separate member to assist the binding force, and the exterior body 10 having a role of accommodating and protecting the power storage element unit 25 can be provided with the assisting function of the binding force. Further, since the contact portion 16 comes into contact with the power storage element unit 25 at a position close to the bottom wall portion 14, which is a high-strength portion of the box-shaped exterior body 10, the contact portion 16 has a relatively large binding force. Can be given to the power storage element unit 25.
  • the power storage device 1 can suppress the swelling of the plurality of power storage elements 20 with a simple configuration.
  • the container 21 of the power storage element 20 is a container having an integral structure in which the pair of long side surfaces 21a, the pair of short side surfaces 21b, and the entire bottom surface are continuous, and form the bottom surface of the container 21.
  • the bottom surface portion is arranged so as to face the same direction as the bottom wall portion of the exterior body 10 (minus side in the Z-axis direction). That is, in the present embodiment, the end portion of the power storage element row 24 on the negative side in the Z-axis direction is not restrained by the restraining member 50.
  • the bottom surface portion of the container 21 of each of the plurality of power storage elements 20 is arranged at the end portion, and as described above, the bottom surface portion side of the container 21 is a portion having high strength.
  • the range not restrained by the restraint member 50 in the power storage element row 24 is set to the bottom surface side of each container 21.
  • the strength of the power storage element unit 25 including the restraint member 50 can be improved by utilizing the high strength portion of each container 21.
  • the configurations of the power storage element unit 25 and the exterior body 10 included in the power storage device 1 may be different from the configurations shown in FIGS. 1 to 4. Therefore, a modified example of the power storage element unit 25 and the exterior body 10 included in the power storage device 1 will be described below, focusing on the differences from the above-described embodiment.
  • FIG. 5 is a diagram showing the configuration of the power storage element unit 25a and the exterior body 10a according to the first modification of the embodiment.
  • FIG. 6 is a diagram showing a state in which the power storage element unit 25a according to the first modification of the embodiment is housed in the main body 12a.
  • the power storage element unit 25a is shown in a side view when viewed from the Y-axis direction, and the main body 12a of the exterior body 10a is shown in a cross section parallel to the XZ plane.
  • the power storage device 1a according to this modification also includes other members such as the lid 11 and the bus bar 33, but the illustration of these other members is omitted in FIGS. 5 and 6.
  • the power storage element unit 25a has eight power storage elements 20 arranged in the X-axis direction as in the embodiment.
  • Eight power storage elements 20 are constrained in the X-axis direction by the restraint member 150.
  • the restraint member 150 has two end members 151 and one or more connecting members 153 that connect the two end members 151.
  • the power storage element unit 25a configured in this way is housed inside the main body 12a through the opening 15a of the main body 12a of the exterior body 10a.
  • the connecting member 153 is also arranged on the positive side in the Y-axis direction of the eight power storage elements 20.
  • the end member 151 is formed in a size (shape) that exposes the lower end portion of the long side surface 21a of the power storage element 20 at the end portion in the X-axis direction. It is different from the power storage element unit 25. That is, in this modification, the lower end portion (end portion 152a) of the end face 152 in the X-axis direction of the power storage element unit 25a is formed not by the end member 151 but by the long side surface 21a of the power storage element 20.
  • the main body portion 12a of the exterior body 10a has a contact portion 16a protruding inward from the side wall portion 13a in the X-axis direction.
  • the contact portion 16a is the end portion 152a in the third direction (Z-axis direction) of the end surface 152 of the power storage element unit 25a, and the movement of the two end members 151 in the first direction (X-axis direction) is performed. It abuts on the end 152a corresponding to a position not constrained by any of the one or more connecting members 153.
  • the binding force of the end members 151 at both ends of the plurality of power storage elements 20 does not act on the plurality of power storage elements 20.
  • the contact portion 16a of the exterior body 10a comes into contact with the end face 152a of the power storage element unit 25a in the height direction in which the connecting member 153 is not arranged.
  • the restraining force at the height position where the connecting member 153 is not arranged can be assisted by the exterior body 10a. It is not necessary to use a separate member to assist the binding force, and the exterior body 10a having a role of accommodating and protecting the power storage element unit 25a can be provided with the assisting function of the binding force.
  • each of the plurality of power storage elements 20 is in a state of receiving the binding force from the restraining member 150 and the exterior body 10a in a wide region of the long side surface 21a that easily swells. Therefore, the swelling of each of the plurality of power storage elements 20 is efficiently suppressed.
  • the power storage device 1a according to the present modification can suppress the swelling of the plurality of power storage elements 20 with a simple configuration.
  • the contact portion 16a is arranged at a position close to the bottom wall portion 14a, which is a high-strength portion of the box-shaped exterior body 10a. Therefore, the contact portion 16a can apply a relatively large binding force to the power storage element unit 25a.
  • the inner surface of the side wall portion 13a does not abut on the end surface 152 of the power storage element unit 25a at a position other than the contact portion 16a, but the inner surface of the side wall portion 13a is the same. It may come into contact with the end face 152 at a position other than the contact portion 16a.
  • the exterior body 10a can give a further binding force to the power storage element unit 25a.
  • the power storage device 1a can be downsized.
  • each of the plurality of power storage elements 20 can be fixed to the inner bottom surface 18a formed by the bottom wall portion 14a of the main body portion 12a by adhesion or the like. Thereby, as described in the embodiment, the deformation or displacement of each of the plurality of power storage elements 20 in various directions can be effectively suppressed by the combination of the exterior body 10a and the restraint member 150. The overall strength, vibration resistance, impact resistance, and the like of the power storage element 1a are improved.
  • This effect can also be obtained by fixing surfaces other than the bottom surface of the power storage element unit 25a (both sides of the power storage element unit 25a in the Y-axis direction or / and both sides in the X-axis direction, etc.) to the main body 12a by adhesion or the like. can get.
  • the restraining member 150 may be fixed to the inner surface of the exterior body 12a with an adhesive or the like.
  • each of the restraint member 150 and the exterior body 12 a can function as a reinforcing member in which one of them improves the strength of the other.
  • the method of fixing the power storage element unit 25a to the exterior body 10a is the same as that of the embodiment in that the method is not limited to the adhesion by the adhesive.
  • the power storage device 1a may include an end spacer 41 arranged inside the end member 151.
  • the partner with which the contact portion 16a directly contacts is the end spacer 41. That is, the end portion 152a of the end face 152 in the X-axis direction of the power storage element unit 25a may be formed by the end spacer 41.
  • FIG. 7 is a diagram showing a state in which the power storage element unit 25 according to the second modification of the embodiment is housed in the main body 12 of the exterior body 10b.
  • the power storage element unit 25 has eight power storage elements 20 arranged in the X-axis direction, as in the embodiment.
  • the power storage element 20 is constrained in the X-axis direction by the restraint member 50.
  • the end surface 52 (outer surface of the end member 51) of the power storage element unit 25 in the X-axis direction abuts on the contact portion 16b of the outer body 10b, which is a member different from the main body 12. In that respect, it differs from the above-described embodiment.
  • the contact portion 16b is an intervening member interposed between the side wall portion 13 of the exterior body 10b and the end member 51, and is a member separate from the main body portion 12.
  • the contact portion 16b is a plate-shaped member made of metal, resin, or the like.
  • the abutting portion 16b is in contact with the end portion 52a corresponding to a position where at least the movement of the end member 51 in the first direction (X-axis direction) is not constrained by any of the one or more connecting members 53. ..
  • the restraining force at the height position where the connecting member 53 is not arranged can be assisted by the exterior body 10b (including the contact portion 16b).
  • the contact portion 16b can be realized by a simple plate-shaped member, and therefore, swelling of the plurality of power storage elements 20 can be suppressed with a simple configuration. Further, when a convex portion formed by, for example, a bolt or a nut is present on the outer surface of the end member 51, the contact portion 16b can function as a member for suppressing damage to the side wall portion 13 due to the convex portion. That is, the contact portion 16b can function as a member that protects the side wall portion 13. When an external force is applied from the outside of the side wall portion 13, the contact portion 16b can function as a member for protecting the power storage element unit 25.
  • the thickness of the contact portion 16b may be thicker or thinner than the thickness of the end member 51, or may be the same as the thickness of the end member 51.
  • the size of the contact portion 16b when viewed from the X-axis direction may be about the same as that of the power storage element 20 or larger than that of the power storage element 20.
  • the arrangement range of the abutting portion 16b in the Z-axis direction may be a range that abuts on the end portion 52a of the end member 51.
  • the size of the abutting portion 16b in the Z-axis direction may be a size that abuts on the end portion 52a of the end member 51 and reaches the upper end of the end member 51 (the end on the plus side in the Z-axis direction), and the upper end of the end member 51.
  • the size may not reach.
  • the two end members 51 may be connected by a connecting member 53 at a position other than the upper end portion (the end portion on the plus side in the Z-axis direction). Even in this case, the upper ends of the two end members 51 come into contact with the abutting portion 16 of the exterior body 10. As a result, the power storage element unit 25 can receive a binding force from the contact portion 16 at a height position not connected by the connecting member 53.
  • the contact portion 16 mainly applies a binding force to the power storage element unit 25 at a position close to the opening 15, that is, a position where it is easily displaced (deformed).
  • the lid 11 is fixed to the opening 15, the lid 11 is bound to the member that suppresses the displacement of the contact portion 16, that is, the power storage element unit 25, via the contact portion 16. Can function as a member that gives.
  • the exterior body 10 may have a plurality of ribs extending in the vertical direction (Z-axis direction) on the inner surface of the wall portion such as the side wall portion 13. As a result, it is possible to improve the strength of the exterior body 10 while suppressing an increase in the weight of the exterior body 10.
  • the contact portion that comes into contact with the end surface 52 of the power storage element unit 25 may be formed by the tip portions of one or more ribs. As a result, the abutting portion can give a large binding force to the end surface 52 of the power storage element unit 25 together with the peripheral portion of the abutting portion in the exterior body 10.
  • the shape of the connecting member 53 is not limited to the shapes shown in FIGS. 2 to 4.
  • a rod-shaped member such as a round bar or a square bar may be adopted as a connecting member for connecting the two end members 51.
  • the method of connecting the connecting member 53 and the end member 51 is not limited to welding.
  • Various methods such as fastening with bolts and nuts or caulking with rivets can also be adopted as a method for connecting the connecting member 53 and the end member 51.
  • the power storage element unit 25 does not have to include a plurality of spacers 42 and end spacers 41.
  • each power storage element 20 has an insulating film covering the outer periphery, the containers 21 of the power storage elements 20 adjacent to each other are insulated by the heat insulating film. Therefore, it is not necessary to arrange the spacer 42 for insulation between the power storage elements 20 adjacent to each other.
  • the present invention can be applied to a power storage device provided with a power storage element such as a lithium ion secondary battery.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne un dispositif de stockage d'énergie (1) comportant une unité d'élément de stockage d'énergie (25) et un corps extérieur (10). L'unité d'élément de stockage d'énergie (25) comprend : une pluralité d'éléments de stockage d'énergie (20) qui sont agencés côte à côte dans une première direction ; des éléments d'extrémité (51) disposés aux deux extrémités de la pluralité d'éléments de stockage d'énergie (20) dans la première direction ; et un ou plusieurs éléments de connexion (53) qui relient les deux éléments d'extrémité (51). Chacun de l'un ou plusieurs éléments de connexion (53), qui sont des côtés latéraux de la pluralité d'éléments de stockage d'énergie (20) dans une deuxième direction, limite le mouvement des deux éléments d'extrémité (51) dans la première direction en reliant les deux éléments d'extrémité (51) dans une position prédéterminée dans une troisième direction. Le corps extérieur (10) a une partie de butée (16) qui vient en butée contre une surface d'extrémité (52) de l'unité d'élément de stockage d'énergie (25) dans la première direction. La partie de butée (16) vient en butée contre une partie d'extrémité (52a) de la surface d'extrémité (52) correspondant à une position où le mouvement des deux éléments d'extrémité (51) dans la première direction n'est pas limité.
PCT/JP2020/005942 2019-03-14 2020-02-17 Dispositif de stockage d'énergie WO2020184068A1 (fr)

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JP2019047311 2019-03-14
JP2019-047311 2019-03-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015170454A (ja) * 2014-03-06 2015-09-28 住友電気工業株式会社 二次電池装置
JP2016058377A (ja) * 2014-09-04 2016-04-21 株式会社Ｇｓユアサ 蓄電装置及び蓄電装置の製造方法
JP2017069004A (ja) * 2015-09-29 2017-04-06 株式会社Ｇｓユアサ 蓄電装置及び蓄電装置の製造方法
JP2018029014A (ja) * 2016-08-18 2018-02-22 株式会社Ｇｓユアサ 蓄電装置
WO2018097092A1 (fr) * 2016-11-25 2018-05-31 本田技研工業株式会社 Dispositif accumulateur d'électricité

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015170454A (ja) * 2014-03-06 2015-09-28 住友電気工業株式会社 二次電池装置
JP2016058377A (ja) * 2014-09-04 2016-04-21 株式会社Ｇｓユアサ 蓄電装置及び蓄電装置の製造方法
JP2017069004A (ja) * 2015-09-29 2017-04-06 株式会社Ｇｓユアサ 蓄電装置及び蓄電装置の製造方法
JP2018029014A (ja) * 2016-08-18 2018-02-22 株式会社Ｇｓユアサ 蓄電装置
WO2018097092A1 (fr) * 2016-11-25 2018-05-31 本田技研工業株式会社 Dispositif accumulateur d'électricité

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