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WO2018150829A1 - Dispositif de stockage d'énergie - Google Patents

Dispositif de stockage d'énergie Download PDF

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Publication number
WO2018150829A1
WO2018150829A1 PCT/JP2018/002138 JP2018002138W WO2018150829A1 WO 2018150829 A1 WO2018150829 A1 WO 2018150829A1 JP 2018002138 W JP2018002138 W JP 2018002138W WO 2018150829 A1 WO2018150829 A1 WO 2018150829A1
Authority
WO
WIPO (PCT)
Prior art keywords
current collector
storage device
treatment layer
power storage
surface treatment
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2018/002138
Other languages
English (en)
Japanese (ja)
Inventor
中村　知広
貴之 弘瀬
耕二郎 田丸
祐樹 杉本
泰有 秋山
素宜 奥村
卓郎 菊池
秀典 ▲高▼橋
伸烈 芳賀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
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
Priority claimed from JP2017126614A external-priority patent/JP6855339B2/ja
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Priority to CN201880011738.4A priority Critical patent/CN110301061B/zh
Priority to DE112018000865.7T priority patent/DE112018000865T5/de
Priority to US16/486,087 priority patent/US10910644B2/en
Publication of WO2018150829A1 publication Critical patent/WO2018150829A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01G11/66—Current collectors
    • H01G11/70—Current collectors characterised by their structure
    • 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
    • H01G11/80—Gaskets; Sealings
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • One aspect of the present invention relates to a power storage device.
  • Patent Document 1 describes a bipolar secondary battery.
  • This bipolar secondary battery includes a bipolar electrode provided with a positive electrode on one surface of a metal current collector and a negative electrode on the other surface, a separator sandwiched between the positive electrode and the negative electrode, a positive electrode, a negative electrode, and a separator. And a frame-shaped sealing material that surrounds the constructed unit cell and is pressure-bonded between the current collectors.
  • the sealing material is made of resin, and the sealing material has a high pressure bonding part surrounding the periphery of the unit cell.
  • an object of one aspect of the present invention is to provide a power storage device that can ensure strength and liquid tightness between a metal current collector and a resin member.
  • a power storage device includes a metal current collector, a plurality of electrodes that are stacked in a first direction, a separator that is disposed between adjacent electrodes, and an electrode
  • a plurality of resin members that are disposed along the peripheral edge of the electrode and maintain a distance between adjacent electrodes, and a surface treatment layer that covers the surface of the current collector at least at the peripheral edge of the electrode, It has a plurality of protrusions arranged along the second direction intersecting the first direction and protruding from the surface in the first direction, and the protrusion has a portion that becomes tapered from the proximal end side toward the distal end side.
  • a part of the resin member is interposed between the adjacent protrusions from the distal end side to the proximal end side.
  • a part of the resin member is interposed between the adjacent protrusions from the distal end side to the proximal end side.
  • the protrusion has a portion that tapers from the proximal end side toward the distal end side. Therefore, it is controlled that a part of resin member interposed between adjacent protrusions moves in the direction away from the base end. Therefore, since the resin member is prevented from peeling from the surface treatment layer, it is possible to ensure the strength and liquid tightness between the metal current collector and the resin member.
  • the surface treatment layer may further cover the surface of the current collector at the center of the electrode.
  • the surface treatment layer since the surface of the current collector in the central portion of the electrode is covered with the surface treatment layer, for example, when an active material that functions as a positive electrode layer or a negative electrode layer is provided in the central portion of the current collector, Adhesion between the surface and the active material is improved.
  • the current collector may be an electrolytic foil
  • the surface treatment layer may be an electrolytic plating layer.
  • the current collector is an electrolytic foil
  • fine convex portions are formed on at least one surface of the current collector.
  • the surface treatment layer is an electroplating layer, current concentration occurs in this convex portion.
  • the surface treatment layer may cover the surface of the current collector on one side in the first direction.
  • the resin member since the resin member is disposed on the surface of the current collector on one side in the first direction, it is possible to reliably avoid a short circuit between the electrodes.
  • the electrode may further include a positive electrode layer provided on one surface of the current collector and a negative electrode layer provided on the other surface of the current collector. Good. In this case, for example, it is possible to ensure the strength and liquid tightness between the peripheral portion of the bipolar electrode and the resin member.
  • a power storage device that can ensure strength and liquid tightness between a metal current collector and a resin member.
  • FIG. 1 is a cross-sectional view schematically showing a power storage device according to an embodiment.
  • FIG. 2A is an enlarged cross-sectional view of the peripheral edge of the electrode.
  • FIG. 2B is an enlarged sectional view of the surface of the current collector and the surface treatment layer.
  • FIG. 3 is a schematic view illustrating the manufacturing process of the electrolytic foil.
  • FIG. 4 is a schematic view illustrating the manufacturing process of the electrolytic plating layer.
  • FIGS. 5A to 5C are enlarged sectional views of the peripheral edge portion of the electrode according to the modification.
  • FIG. 1 and 2 show an XYZ rectangular coordinate system for convenience of explanation.
  • FIG. 1 is a cross-sectional view schematically showing a power storage device according to an embodiment.
  • the power storage device 1 is, for example, a secondary battery such as a nickel metal hydride secondary battery or a lithium ion secondary battery, or an electric double layer capacitor.
  • the power storage device 1 is used as a battery for various vehicles such as forklifts, hybrid vehicles, and electric vehicles.
  • the electrical storage apparatus 1 is a nickel hydride secondary battery is demonstrated as an example.
  • the power storage device 1 is a bipolar battery including a laminate 2 of bipolar electrodes (electrodes) 3.
  • the power storage device 1 includes a laminated body 2 of bipolar electrodes 3, a case 5 that holds the laminated body 2, and a restraining body 6 that restrains the laminated body 2.
  • the laminate 2 is configured by laminating a plurality of bipolar electrodes 3 along the first direction D1 with separators 7 interposed therebetween.
  • the first direction D1 is a direction along the Z-axis direction.
  • Each of the bipolar electrodes 3 includes a current collector 11, a positive electrode layer 12 provided on one surface (surface) 11 a of the current collector 11, and a negative electrode layer 13 provided on the other surface 11 b of the current collector 11. And have.
  • the positive electrode layer 12 and the negative electrode layer 13 are provided at least in the central portion M of the current collector 11.
  • the positive electrode layer 12 of one bipolar electrode 3 faces the negative electrode layer 13 of one bipolar electrode 3 adjacent in the first direction D1, and the negative electrode layer 13 of one bipolar electrode 3 is in the first direction.
  • the laminate 2 has a plurality of spacers (resin members) 4.
  • the spacer 4 is disposed along the peripheral edge portion 11 c of the bipolar electrode 3 and maintains a distance between adjacent bipolar electrodes 3.
  • the current collector 11 is a metal foil made of nickel, for example.
  • the thickness of the current collector 11 is, for example, about 0.1 ⁇ m to 1000 ⁇ m.
  • An example of the positive electrode active material constituting the positive electrode layer 12 is nickel hydroxide.
  • a negative electrode active material which comprises the negative electrode layer 13 a hydrogen storage alloy is mentioned, for example.
  • the formation region of the negative electrode layer 13 on the other surface 11 b of the current collector 11 may be slightly larger than the formation region of the positive electrode layer 12 on one surface 11 a of the current collector 11.
  • the peripheral portion 11c of the current collector 11 is an uncoated region where the positive electrode active material and the negative electrode active material are not coated.
  • the peripheral edge portion 11 c is held by the case 5 in a state where it is buried in the inner wall 5 a of the case 5.
  • a spacer 4 is interposed between one surface 11a of the peripheral edge portion 11c and the inner wall 5a.
  • a space partitioned by the current collectors 11 and 11 and the inner wall 5a of the case 5 is formed between the current collectors 11 and 11 adjacent in the first direction D1.
  • an electrolytic solution (not shown) made of an alkaline solution such as an aqueous potassium hydroxide solution is accommodated.
  • the space for accommodating the electrolytic solution formed between the bipolar electrodes 3 and 3 is separated (sealed) by a spacer 4 in a liquid-tight manner.
  • a current collector 111A in which only the negative electrode layer 13 is provided on one side is laminated on one side of the laminated body 2 (positive in the Z-axis direction).
  • the current collector 111 ⁇ / b> A is arranged so that the negative electrode layer 13 and the positive electrode layer 12 of the uppermost bipolar electrode 3 face each other with the separator 7 interposed therebetween.
  • a current collector 111B provided with only the positive electrode layer 12 is stacked on the other stacked end of the stacked body 2 (in the negative Z-axis direction).
  • the current collector 111B is disposed so that the positive electrode layer 12 and the negative electrode layer 13 of the lowermost bipolar electrode 3 face each other with the separator 7 interposed therebetween.
  • the edges of the current collectors 111 ⁇ / b> A and 111 ⁇ / b> B are held by the case 5 in a state of being buried in the inner wall 5 a of the case 5, as with the current collector 11 of the bipolar electrode 3.
  • a spacer 4 is interposed between one surface of the edges of the current collectors 111A and 111B and the inner wall 5a.
  • the current collectors 111 ⁇ / b> A and 111 ⁇ / b> B may be formed thicker than the current collector 11 of the bipolar electrode 3.
  • the separator 7 is formed in a sheet shape, for example.
  • the material for forming the separator include a porous film made of a polyolefin-based resin such as polyethylene (PE) and polypropylene (PP), and a woven or non-woven fabric made of polypropylene.
  • the separator 7 may be reinforced with a vinylidene fluoride resin compound or the like.
  • the separator 7 is not limited to a sheet shape but may be a bag shape.
  • the case 5 is formed in a rectangular cylindrical shape by, for example, injection molding using an insulating resin.
  • the resin material constituting the resinous case 5 include polypropylene (PP), polyphenylene sulfide (PPS), modified polyphenylene ether (modified PPE), and modified polyphenylene sulfide (modified PPS).
  • the case 5 is a member that surrounds and holds the side surface 2 a of the stacked body 2 formed by stacking the bipolar electrodes 3.
  • the restraint body 6 is constituted by a pair of restraint plates 21 and 21 and a connecting member (bolt 22 and nut 23) for joining the restraint plates 21 and 21 together.
  • the restraint plate 21 is formed in a flat plate shape with a metal such as iron.
  • An insertion hole 21 a through which the bolt 22 is inserted is provided at a position on the outer side of the case 5 at the edge of the restraint plate 21.
  • the inner peripheral surface of the insertion hole 21a and the bolt seat surface in the restricting body 6 are insulated.
  • a terminal member 25 (terminal member 25 ⁇ / b> A, terminal member 25 ⁇ / b> B) is coupled to one surface side of the restraining plate 21 via an insulating member 24. Examples of a material for forming the insulating member 24 interposed between the restraint plate 21 and the terminal member 25 include a fluorine-based resin or a polyethylene resin.
  • One constraining plate 21 is abutted against one end surface of the case 5 so that the terminal member 25 ⁇ / b> A and the current collector 111 ⁇ / b> A are in contact with each other inside the case 5, and the other constraining plate 21 is a terminal member inside the case 5.
  • 25B and the current collector 111B are abutted against the other end surface of the case 5 so as to be in contact with each other.
  • the bolt 22 is passed through the insertion hole 21a from one restraint plate 21 side to the other restraint plate 21 side, and a nut 23 is screwed onto the tip of the bolt 22 protruding from the other restraint plate 21. Yes.
  • the laminate 2, the current collectors 111A and 111B, and the case 5 are sandwiched and unitized, and a restraining load is applied.
  • the terminal member 25A and the terminal member 25B are disposed between the restraint plate 21 and the laminated body 2 so as to sandwich the laminated body 2 in the first direction D1.
  • a lead part 26 is connected to the terminal member 25A, and a lead part 27 is connected to the terminal member 25B.
  • the power storage device 1 can be charged / discharged by the drawing unit 26 and the drawing unit 27.
  • the configuration of the junction between the current collectors 11, 111 ⁇ / b> A, 111 ⁇ / b> B and the spacer 4 in the power storage device 1 described above will be described in more detail.
  • the current collector 11 will be described, but the current collectors 111A and 111B have the same configuration.
  • a surface treatment layer 30 that covers one surface 11a of the current collector 11 is formed on the peripheral edge portion 11c of the current collector 11. As shown in FIG. The peripheral edge 11 c of the current collector 11 is coupled to the spacer 4 via the surface treatment layer 30.
  • the surface treatment layer 30 is provided in order to ensure strength and liquid tightness between the current collector 11 made of metal and the spacer 4 that is a resin member.
  • the surface treatment layer 30 can be formed by an electrolytic plating process on the current collector 11.
  • the thickness of the surface treatment layer 30 is not particularly limited, the thickness of the current collector 11 may be set to 0.1 ⁇ m to 1000 ⁇ m, whereas the thickness of the surface treatment layer 30 may be set to 0.1 ⁇ m to 30 ⁇ m. .
  • the surface treatment layer 30 has a plurality of protrusions 31 protruding from the one surface 11a in the first direction D1.
  • Each protrusion 31 reaches the tip 33 along the first direction D1 with a convex portion 11d (described later) of the current collector 11 as a base end 32.
  • the protrusion 31 is disposed along a second direction D2 that intersects the first direction D1.
  • the second direction D2 is a direction along the XY plane.
  • Each projection 31 includes a plurality of substantially spherical deposited metals (provided materials) formed by electrolytic plating.
  • the deposited metal overlaps with each other, so that an enlarged portion 34 in which the length dimension of the protrusion 31 in the second direction D ⁇ b> 2 is larger than the length dimension of the base end 32 in the second direction D ⁇ b> 2 is formed.
  • the protrusion 31 has a portion that becomes tapered from the proximal end 32 side toward the distal end 33 side.
  • the position of the enlarged portion 34 in the protrusion 31 does not necessarily have to be at the distal end 33, but is at least located closer to the distal end 33 than the base end 32.
  • the position of the enlarged portion 34 in the projection 31 may be different for each projection 31 depending on the overlapping manner of the deposited metal.
  • a part 4 a of the spacer 4 is interposed between the adjacent protrusions 31.
  • the spacer 4 that is a resin member is molded such that a part 4 a of the spacer 4 is interposed between the protrusions 31 during molding.
  • the adjacent protrusion 31 restricts the movement of the part 4 a of the intervening spacer 4 in the direction away from the base end 32.
  • the cross-sectional shape between the adjacent protrusions 31 is an undercut shape that exhibits an anchor effect.
  • a surface treatment layer 30 that covers one surface 11a of the current collector 11 is formed in the central portion M (see FIG. 1) of the bipolar electrode 3, a surface treatment layer 30 that covers one surface 11a of the current collector 11 is formed.
  • the central portion M of the current collector 11 is bonded to the positive electrode active material of the positive electrode layer 12 through the surface treatment layer 30.
  • the surface treatment layer 30 is continuously formed on one surface 11 a of the current collector 11 from the peripheral edge portion 11 c to the central portion M.
  • the surface treatment layer 30 covers the surface of one side (Z-axis direction positive direction) of the first direction D1 in any of the plurality of current collectors 11.
  • the spacer 4 is disposed on one surface 11 a of the current collector 11 via the surface treatment layer 30.
  • the spacer 4 of the one surface 11a of the current collector 11 and the other surface 11b of the current collector 11 face each other in the first direction D1. That is, in the adjacent bipolar electrode 3, the insulating surface is ensured by the spacer 4 that is a resin member without directly facing the one surface 11 a of the current collector 11 and the other surface 11 b of the current collector 11. Has been.
  • an electrolytic foil 11x constituting the current collector 11 is prepared.
  • a part of the drum DR1 and the anode 50 are immersed in an electrolytic solution L1 containing nickel cations.
  • a predetermined current flows between the drum DR1 and the anode 50.
  • nickel is deposited on the surface of the drum DR1.
  • the electrolytic foil 11x is obtained by precipitating nickel on the surface of the drum DR1 until it has a certain thickness. When nickel is deposited on the surface of the drum DR1, fine convex portions 11d are formed on the surface of the electrolytic foil 11x opposite to the surface of the drum DR1. The produced electrolytic foil 11x is wound around the drum DR2 to become a roll R1.
  • an electrolytic plating layer 30x constituting the surface treatment layer 30 is formed.
  • the electrolytic foil 11x drawn from the roll R1 by the drum DR3 is transported along the surface of the drum DR4.
  • a part of the drum DR4 and the anode 51 are immersed in an electrolytic solution L2 containing nickel cations.
  • a predetermined current flows between the drum DR4 and the anode 51.
  • nickel deposits on the surface of the electrolytic foil 11x on the drum DR4.
  • the electrolytic plating layer 30x is a roughened plating layer obtained by depositing nickel on the surface of the electrolytic foil 11x on the drum DR4 until it has a certain thickness.
  • nickel is deposited on the surface of the electrolytic foil 11x on the drum DR4
  • nickel is deposited on the convex portion 11d of the electrolytic foil 11x.
  • current concentration occurs in the convex portion 11d, and nickel is selectively deposited so that the convex portion 11d serves as the base end 32.
  • the protrusion 31 grows in the electrolytic plating layer 30x, and the surface treatment layer 30 is formed.
  • the electrolytic foil 11x and the electrolytic plating layer 30x are conveyed as the rough plating foil 11y, wound around the drum DR5, and become the roll R2.
  • a part 4 a of the spacer 4 is interposed between the adjacent protrusions 31 from the tip 33 side to the base end 32 side of the protrusion 31.
  • the protrusion 31 has a portion that tapers from the proximal end 32 side toward the distal end 33 side. This restricts the movement of the part 4 a of the spacer 4 interposed between the adjacent protrusions 31 in the direction away from the base end 32. Therefore, since the spacer 4 is prevented from peeling off from the surface treatment layer 30, it is possible to ensure strength and liquid tightness between the metal current collectors 11, 111 ⁇ / b> A, 111 ⁇ / b> B and the spacer 4.
  • the surface treatment layer 30 further covers the surface of the current collector 11 at the central portion M of the bipolar electrode 3. Thereby, since one surface 11a of the current collector 11 in the central portion M of the bipolar electrode 3 is covered with the surface treatment layer 30, the positive electrode layer 12 or the negative electrode layer is provided in the central portion M of the current collector 11. The adhesion between the active material functioning as 13 and the bipolar electrode 3 is improved.
  • the current collector 11 is an electrolytic foil 11x
  • the surface treatment layer 30 is an electrolytic plating layer 30x. Since the current collector 11 is the electrolytic foil 11x, a fine convex portion 11d is formed on at least one surface of the current collector 11. Further, since the surface treatment layer 30 is the electrolytic plating layer 30x, current concentration occurs in the convex portion 11d. Thereby, the protrusion 31 of the surface treatment layer 30 can be grown selectively using the current concentration on the convex portion 11d so that the convex portion 11d becomes the base end 32.
  • the surface treatment layer 30 covers the surfaces of the current collectors 11, 111 ⁇ / b> A, and 111 ⁇ / b> B on one side of the first direction D ⁇ b> 1 (positive direction in the Z-axis direction).
  • the bipolar electrode 3 has a positive electrode layer 12 provided on one surface 11 a of the current collector 11 and a negative electrode layer 13 provided on the other surface 11 b of the current collector 11. Thereby, it is possible to ensure the strength and liquid tightness between the peripheral edge portion 11 c of the bipolar electrode 3 and the spacer 4.
  • One aspect of the present invention is not limited to the above embodiment.
  • a surface treatment layer 30 that covers one surface 11 a of the current collector 11 is formed on the peripheral edge portion 11 c of the current collector 11.
  • one surface 11a of the peripheral edge portion 11c of the body 11 has been described with reference to the example in which the spacer 4 is disposed via the surface treatment layer 30, one aspect of the present invention is not limited thereto.
  • the spacer 4 may be disposed on both surfaces 11 a and 11 b of the current collector 11. That is, one surface 11 a of the peripheral edge portion 11 c of the current collector 11 is coupled to the spacer 4 via the surface treatment layer 30, and the other surface 11 a of the peripheral edge portion 11 c of the current collector 11 is covered with the spacer 4. It is good also as 1 A of electrical storage apparatuses provided with.
  • the temperature change heats, cooling, Current collector 11, positive electrode layer caused by difference in expansion or contraction between spacer 4 and current collector 11 due to reaction heat generation of bipolar electrode 3, change in outside air temperature, etc.
  • humidity absorption change in outside air temperature, etc.
  • 12 or the negative electrode layer 13 can be reduced in distortion or warpage.
  • the surface treatment layer 30 is provided on one surface (surface) 11 a of the current collector 11, but the one surface 11 a and the other surface 11 b It may be provided on both sides. Also in this case, as shown in FIG. 5B, the spacer 4 may be disposed on both surfaces 11 a and 11 b of the current collector 11. That is, it is good also as the electrical storage apparatus 1B provided with the structure by which both surfaces 11a and 11b of the peripheral part 11c of the electrical power collector 11 are couple
  • the surface treatment layer 30 was provided in one surface (surface) 11a of the electrical power collector 11, the surface treatment layer 30 is one surface 11a. It may be provided only on the other surface 11b. Also in this case, as shown in FIG. 5C, the spacer 4 may be disposed on both surfaces 11 a and 11 b of the current collector 11. That is, one surface 11 a of the peripheral portion 11 c of the current collector 11 is covered with the spacer 4, and the other surface 11 b of the peripheral portion 11 c of the current collector 11 is coupled to the spacer 4 via the surface treatment layer 30.
  • a power storage device 1C having a configuration may be used.
  • the current collector 11 is a metal foil made of nickel, but may be an aluminum foil or a copper foil.
  • the current collector 11 may be a rolled plate or a rolled foil.
  • the protrusions 31 of the surface treatment layer 30 are configured by a plurality of substantially spherical deposited metals formed by electrolytic plating.
  • a plurality of metal particles are collected from the current collector 11 by a process such as sputtering.
  • the protrusion 31 of the surface treatment layer 30 may be configured by applying to the surface.
  • the shape of the protrusion 31 is not particularly limited as long as it has at least part of a tapered shape that is tapered from the proximal end 32 side toward the distal end 33 side.

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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)
  • Manufacturing & Machinery (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

L'invention concerne un dispositif de stockage d'énergie (1) comprenant : une pluralité d'électrodes disposées de manière à être empilées le long d'une première direction (D1), chacune ayant un collecteur métallique (11); un séparateur disposé entre des électrodes adjacentes; une pluralité d'espaceurs (4) disposés le long d'une section de bord périphérique (11c) de l'électrode, maintenant un espacement entre des électrodes adjacentes; et une couche de traitement de surface (30) recouvrant une surface (11a) du collecteur (11) dans au moins la section de bord périphérique (11c) de l'électrode. La couche de traitement de surface (30) a une pluralité de saillies (31) disposées le long d'une seconde direction (D2) croisant la première direction (D1), et faisant saillie à partir de la première surface (11a) dans la première direction (D1). Chacune des saillies (31) a une partie qui s'élargit vers l'avant, d'un côté d'extrémité de base (32) à un côté d'extrémité avant (33). Entre des saillies adjacentes (31), une partie (4a) de l'espaceur (4) est interposée entre le côté d'extrémité avant (33) et le côté d'extrémité de base (32).
PCT/JP2018/002138 2017-02-15 2018-01-24 Dispositif de stockage d'énergie Ceased WO2018150829A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201880011738.4A CN110301061B (zh) 2017-02-15 2018-01-24 镍氢电池
DE112018000865.7T DE112018000865T5 (de) 2017-02-15 2018-01-24 Leistungsspeichervorrichtung
US16/486,087 US10910644B2 (en) 2017-02-15 2018-01-24 Power storage device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2017026044 2017-02-15
JP2017126614A JP6855339B2 (ja) 2017-02-15 2017-06-28 ニッケル水素電池
JP2017-126614 2017-06-28
JP2017-026044 2017-11-22

Publications (1)

Publication Number Publication Date
WO2018150829A1 true WO2018150829A1 (fr) 2018-08-23

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WO2020039987A1 (fr) * 2018-08-22 2020-02-27 株式会社豊田自動織機 Module de stockage d'énergie
JP2020061238A (ja) * 2018-10-09 2020-04-16 株式会社豊田自動織機 蓄電装置及びその製造方法

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JPH10154515A (ja) * 1996-11-26 1998-06-09 Sumitomo Electric Ind Ltd アルカリ二次電池用電極基体及び該電極基体に活物質を充填してなる電極を用いたアルカリ二次電池
JP2004296386A (ja) * 2003-03-28 2004-10-21 Sanyo Electric Co Ltd リチウム二次電池用負極及びその製造方法
JP2005135764A (ja) * 2003-10-30 2005-05-26 Kawasaki Heavy Ind Ltd バイポーラプレート方式の積層電池
JP2006012589A (ja) * 2004-06-25 2006-01-12 Sanyo Electric Co Ltd 電池とその製造方法及びその電池を用いたパック電池
JP2007036026A (ja) * 2005-07-28 2007-02-08 Sanyo Electric Co Ltd 電気二重層キャパシタ及び電解質電池
JP2009215604A (ja) * 2008-03-10 2009-09-24 Hitachi Cable Ltd 銅箔とその製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020039987A1 (fr) * 2018-08-22 2020-02-27 株式会社豊田自動織機 Module de stockage d'énergie
JP2020061238A (ja) * 2018-10-09 2020-04-16 株式会社豊田自動織機 蓄電装置及びその製造方法
JP7103138B2 (ja) 2018-10-09 2022-07-20 株式会社豊田自動織機 蓄電装置及びその製造方法

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