WO2014050780A1 - Appareil de stockage électrique - Google Patents

Appareil de stockage électrique Download PDF

Info

Publication number
WO2014050780A1
WO2014050780A1 PCT/JP2013/075618 JP2013075618W WO2014050780A1 WO 2014050780 A1 WO2014050780 A1 WO 2014050780A1 JP 2013075618 W JP2013075618 W JP 2013075618W WO 2014050780 A1 WO2014050780 A1 WO 2014050780A1
Authority
WO
WIPO (PCT)
Prior art keywords
negative electrode
conductive member
tab
welding
welded
Prior art date
Application number
PCT/JP2013/075618
Other languages
English (en)
Japanese (ja)
Inventor
元章 奥田
厚志 南形
晃嵩 山田
Original Assignee
株式会社 豊田自動織機
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 豊田自動織機 filed Critical 株式会社 豊田自動織機
Publication of WO2014050780A1 publication Critical patent/WO2014050780A1/fr

Links

Images

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
    • H01G11/74—Terminals, e.g. extensions of current collectors
    • H01G11/76—Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • 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
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H01G11/12—Stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the present invention relates to a power storage device.
  • Patent Document 1 discloses an electrode substrate having a compression plate portion in which unevenness is formed, and a lead piece is welded to the uneven portion.
  • An object of the present invention is to provide a power storage device capable of reducing resistance between a tab and a conductive member while suitably welding the tab and the conductive member.
  • a power storage device includes an electrode, a plate-like conductive member, a case, and a terminal.
  • the electrode has an end provided with a tab.
  • the conductive member is welded to the tab.
  • the conductive member includes a thick part, a thin part, and a step part as a boundary between the thick part and the thin part.
  • the thin portion has a bottom surface close to the stepped portion and an opposite side surface opposite to the bottom surface.
  • the case houses the electrode.
  • the terminal is provided on the case and is electrically connected to the conductive member.
  • the tab and the conductive member are welded to the opposite side surface of the thin portion.
  • FIG. 6 is a cross-sectional view taken along line 6-6 of FIG.
  • FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. Sectional drawing for demonstrating a welding process. Sectional drawing which shows the recessed part of another example. Sectional drawing which shows the recessed part of another example. Sectional drawing which shows the recessed part of another example. Sectional drawing which shows the recessed part of another example.
  • the secondary battery 10 as the power storage device includes a case 11 that forms the outer shape of the secondary battery 10.
  • the case 11 includes a rectangular box-like container 12 and a rectangular flat lid 13 that closes an opening provided in the container 12.
  • the secondary battery 10 is a square battery whose outer shape is a square.
  • the container 12 and the lid 13 are made of metal.
  • the secondary battery 10 of the present embodiment is a lithium ion battery.
  • the secondary battery 10 includes a plurality of electrode assemblies 14 housed in a case 11, and a positive electrode terminal 15 and a negative electrode terminal 16 that are used to exchange power with the electrode assembly 14.
  • the terminals 15 and 16 are attached to the case 11, specifically the lid 13.
  • the positive electrode terminal 15 penetrates the lid 13 while being insulated by the insulating ring 17.
  • a part of the positive electrode terminal 15 is exposed outside the case 11, and another part is inside the case 11.
  • the negative electrode terminal 16 penetrates the case 11 while being insulated by the insulating ring 17. Thereby, members outside the case 11 are accessible to the terminals 15 and 16.
  • each of the electrode assemblies 14 includes a separator 23 in which a positive electrode 21 and a negative electrode 22 as electrodes are formed of a porous film through which ions (lithium ions) related to electrical conduction can pass. And are alternately stacked.
  • Each of the electrodes 21 and 22 and the separator 23 has a rectangular sheet shape.
  • the positive electrode 21 has a rectangular positive metal foil (for example, aluminum foil) 21a and a positive electrode active material layer 21b provided on both surfaces of the positive metal foil 21a.
  • the negative electrode 22 has a rectangular negative metal foil (for example, copper foil) 22a and a negative electrode active material layer 22b provided on both surfaces of the negative metal foil 22a.
  • the positive electrode active material layer 21 b is covered with the negative electrode active material layer 22 b, and the electrodes 21 and 22 are covered with the separator 23.
  • the positive electrode 21 has an end portion 21c on which a positive electrode tab 31 protrudes.
  • the positive electrode tab 31 is formed by protruding a part of the positive electrode metal foil 21a from the end portion 21c.
  • the negative electrode 22 has an end 22c from which the negative electrode tab 32 protrudes.
  • the negative electrode tab 32 is formed by protruding a part of the negative electrode metal foil 22a from the end 22c.
  • the negative electrode tab 32 has a width in a direction orthogonal to the protruding direction of the negative electrode tab 32. It can be said that the direction orthogonal to the protruding direction is a direction along the end 22 c of the negative electrode 22.
  • the electrodes 21 and 22 are arranged so that tabs having the same polarity among the plurality of tabs 31 and 32 are arranged in a row in the stacking direction, while tabs having different polarities are not aligned in the stacking direction. Yes.
  • the plurality of negative electrode tabs 32 are gathered together toward the first end side in the stacking direction of the electrode assembly 14, and in the gathered state, the negative electrode tabs 32 are on the side opposite to the first end side. It is folded back toward the second end side.
  • the positive electrode tabs 31 are folded toward the second end side opposite to the first end side in a state where the positive electrode tabs 31 are gathered on the first end side in the stacking direction of the electrode assembly 14.
  • the electrode assembly 14 is accommodated in the case 11 in a state where the portion of the electrode assembly 14 where the plurality of tabs 31 and 32 are located and the lid 13 provided with the terminals 15 and 16 face each other. .
  • the secondary battery 10 includes a positive electrode conductive member 41 and a negative electrode conductive member that electrically connect a tab having the same polarity among the plurality of tabs 31 and 32 and the terminals 15 and 16 and the terminal.
  • a member 42 is provided.
  • the positive electrode conductive member 41 is made of metal (for example, aluminum), is welded to the positive electrode tab 31, and is electrically connected to the positive electrode terminal 15.
  • the negative electrode conductive member 42 is made of metal (for example, copper), is welded to the negative electrode tab 32, and is electrically connected to the negative electrode terminal 16. Thereby, the electric power of the electrode assembly 14 can be taken out of the case 11 through the terminals 15 and 16, and the electric power can be applied to the electrode assembly 14.
  • the welding mode between the negative electrode tab 32 and the negative electrode conductive member 42 will be described together with the detailed configuration of the negative electrode conductive member 42.
  • the welding aspect of the positive electrode tab 31 and the positive electrode conductive member 41 is the same as the welding aspect of the negative electrode tab 32 and the negative electrode conductive member 42, the detailed description is abbreviate
  • the negative electrode conductive member 42 is plate-shaped.
  • the negative electrode conductive member 42 has flat plate surfaces 42a and 42b extending along a direction orthogonal to the thickness direction.
  • the negative electrode conductive member 42 is attached in a state where the tab side plate surface (back surface) 42a facing the negative electrode tab 32 of both the plate surfaces 42a and 42b is in contact with the negative electrode tab 32.
  • the thickness direction of the negative electrode conductive member 42 coincides with the direction along the protruding direction of the negative electrode tab 32.
  • the negative electrode tab 32 in contact with the tab side plate surface 42a constitutes the outermost layer of the negative electrode tab group G formed by overlapping the negative electrode tabs 32.
  • the terminal side plate surface (front surface) 42b opposite to the tab side plate surface 42a (back surface) of the negative electrode conductive member 42 is provided with a recess 51 that is recessed in the thickness direction.
  • the recess 51 is circular when viewed from the thickness direction of the negative electrode conductive member 42.
  • the recess 51 includes a bottom surface 52 located at a position recessed in the thickness direction from the terminal side plate surface 42b, and a stepped portion 53 formed between the bottom surface 52 and the terminal side plate surface 42b. .
  • the step portion 53 extends along the thickness direction.
  • the bottom surface 52 and the stepped portion 53 are continuous, and the terminal side plate surface 42b and the stepped portion 53 are continuous.
  • the thickness of the negative electrode conductive member 42 is thinner than other portions of the negative electrode conductive member 42. That is, the negative electrode conductive member 42 includes a thick portion 61 and a thin portion 62 having different thicknesses, and a step portion 53 as a boundary between the thick portion 61 and the thin portion 62.
  • the thin portion 62 includes the above-described bottom surface 52 and an opposite side surface 42 d opposite to the bottom surface 52.
  • the recessed part 51 is formed by the press work which presses the plate-shaped negative electrode electrically-conductive member 42 locally, for example. For this reason, the thin portion 62 is harder than the thick portion 61.
  • the recess 51 has an opening 54 that opens in the thickness direction of the negative electrode conductive member 42.
  • a thick portion 61 is located around the opening 54. For this reason, the recess 51 is open in the thickness direction of the negative electrode conductive member 42, but is closed in a direction orthogonal to the thickness direction. In other words, the thick part 61 is disposed so as to surround the entire circumference of the thin part 62.
  • the concave portion 51 is located at a portion where the negative electrode tab 32 is projected on the terminal-side plate surface 42 b when viewed from the thickness direction of the negative electrode conductive member 42.
  • the recess 51 is located at a portion overlapping the negative electrode tab 32 on the terminal side plate surface 42 b when viewed from the thickness direction of the negative electrode conductive member 42.
  • the recess 51 is located at a portion where an overlapping portion of all the negative electrode tabs 32 on the terminal-side plate surface 42 b is projected as viewed from the thickness direction of the negative electrode conductive member 42.
  • the recess 51 is located at a portion that overlaps all the negative electrode tabs 32 on the terminal-side plate surface 42 b when viewed from the thickness direction of the negative electrode conductive member 42.
  • the width L1 of the negative electrode tab 32 is longer than the width L2 of the bottom surface 52, which is the surface near the stepped portion 53 in the thin portion 62.
  • the width L2 of the bottom surface 52 is the length of the bottom surface 52 in the width direction of the negative electrode tab 32. Further, the width L2 of the bottom surface 52 can be said to be the width of the opening 54.
  • the negative electrode tab 32 is welded to a tab side plate surface (surface) 42a opposite to the bottom surface 52, which is a surface near the stepped portion 53 in the thin portion 62.
  • the negative electrode tab 32 and the negative electrode conductive member 42 are welded to the opposite side surface 42d included in the tab side plate surface (surface) 42a. That is, the welded portion P between the negative electrode tab 32 and the negative electrode conductive member 42 is in the region of the thin portion 62.
  • a part of the negative electrode tab 32 is in contact with the tab side plate surface 42 a opposite to the terminal side plate surface 42 b which is the surface on the stepped portion 53 side in the thick portion 61.
  • the thickness of the negative electrode tab group G on which the negative electrode tabs 32 overlap is determined by the number of stacked negative electrode electrodes 22. And, as the thickness of the negative electrode tab group G increases, poor welding between the negative electrode tab 32 and the negative electrode conductive member 42 tends to occur. For this reason, it is preferable to make the thickness of the thin portion 62 thinner as the thickness of the negative electrode tab group G increases. However, as the thickness of the thin portion 62 becomes thinner, the thin portion 62 becomes brittle. In view of this point, the thickness of the thin portion 62 is set thin within a range in which the strength of the thin portion 62 can be secured to some extent.
  • the number of the negative electrodes 22 constituting the electrode assembly 14 is five, but in actuality, for example, about 60 to 80.
  • the thickness of the negative electrode tab 32 is 10 micrometers, for example. In this case, the thickness in the overlapping direction of the negative electrode tab group G in which the negative electrode tabs 32 overlap is about 0.6 to 0.8 mm. On the other hand, the thickness of the thin portion 62 is 0.3 to 1.0 mm.
  • the negative electrode conductive member 42 is disposed so that the tab side plate surface 42 a contacts the negative electrode tab 32 in a state where the negative electrode tabs 32 are gathered on the first end side in the stacking direction of the electrode assembly 14. . Then, the negative electrode tab 32 and the negative electrode conductive member 42 are sandwiched between the pair of welding electrode rods W1 and W2. In this case, the welding electrode rod W ⁇ b> 1 disposed on the negative electrode conductive member 42 is inserted into the recess 51 through the opening 54 of the recess 51 and is in contact with the bottom surface 52 of the recess 51.
  • the welding electrode bar W2 disposed on the negative electrode tab 32 presses the negative electrode tab 32 via the contact plate W3. In this state, electric power for welding is applied between the pair of welding electrode rods W1, W2. Accordingly, the negative electrode tabs 32 are welded to each other, and the negative electrode tab 32 and the negative electrode conductive member 42 are welded at the thin portion 62.
  • the diameters of the pair of welding electrode rods W1 and W2 are set so that the welding location P can have a desired welding strength.
  • size of the recessed part 51 is a magnitude
  • the negative electrode tab 32 and the negative electrode conductive member 42 are welded at the thin portion 62.
  • the heat which concerns on a diffusion is hard to spread
  • the negative electrode tab 32 is welded by the tab side plate surface 42a opposite to the terminal side plate surface 42b having the concave portion 51 for forming the thin portion 62, the negative electrode tab 32 and the concave portion 51 are formed.
  • the step portion 53 does not interfere.
  • the embodiment described in detail above has the following excellent advantages.
  • the negative electrode conductive member 42 includes a thick part 61 and a thin part 62 having different thicknesses, and a step part 53 as a boundary between the thick part 61 and the thin part 62.
  • the negative electrode tab 32 and the negative electrode conductive member 42 were welded at the thin portion 62.
  • thermal diffusion is reduced. Therefore, welding of the negative electrode tab 32 and the negative electrode conductive member 42 can be suitably performed.
  • the negative electrode tab 32 is welded at a tab side plate surface 42 a opposite to the bottom surface 52 near the stepped portion 53 in the thin wall portion 62.
  • the size of the negative electrode tab 32 is not limited by the step part 53. Therefore, the negative electrode tab 32 can be enlarged in order to improve the contact area between the negative electrode tab 32 and the negative electrode conductive member 42. Therefore, the resistance between the negative electrode tab 32 and the negative electrode conductive member 42 can be reduced while the negative electrode tab 32 and the negative electrode conductive member 42 are suitably welded.
  • the negative electrode tab 32 and the negative electrode conductive member 42 are welded more easily than the positive electrode side. It can be suitably performed.
  • the negative electrode tab 32 is in contact with the tab side plate surface 42a opposite to the terminal side plate surface 42b near the stepped portion 53 in the thick portion 61.
  • the width L1 of the negative electrode tab 32 was set longer than the width L2 of the bottom surface 52 of the recess 51.
  • a thick portion 61 is located around the opening 54 of the recess 51. Accordingly, the recess 51 is opened in the thickness direction of the negative electrode conductive member 42, and is closed in a direction orthogonal to the thickness direction. Therefore, when the welding electrode rod W1 positioned on the negative electrode conductive member 42 is inserted into the recess 51 through the opening 54, the welding electrode rod W1 is not easily displaced in the direction perpendicular to the thickness direction. . Therefore, it is possible to suppress poor welding due to the positional deviation.
  • the recess 51 is opened in the thickness direction of the negative electrode conductive member 42 and is closed in a direction orthogonal to the thickness direction, but is not limited thereto.
  • the negative electrode conductive member 92 may have a recess 91 that opens in the thickness direction and in a direction orthogonal to the thickness direction.
  • the recess 91 may extend along the end 92 c of the negative electrode conductive member 92.
  • the thin portion 62 may be provided at the portion of the negative electrode conductive member 92 that constitutes the end portion 92c.
  • the stepped portion 53 extends along the thickness direction of the negative electrode conductive member 42, but is not limited thereto.
  • a stepped portion 101 that is inclined with respect to the thickness direction may be used.
  • step-difference part 102 may be sufficient.
  • the specific shape of the step portion is arbitrary.
  • step-difference part 101,102 comprises the boundary of the thick part 61 and the thin part 62.
  • the tab side plate surface 42a to which the negative electrode tab 32 is welded is a flat surface.
  • the present invention is not limited to this.
  • a step portion may be formed on the tab side plate surface 42a.
  • the step size of the step portion formed on the tab side plate surface 42a may be set shorter than the step size of the step portion 53 formed on the terminal side plate surface 42b.
  • the step size of the step portion means the length of the step portion in the thickness direction of the negative electrode conductive member 42.
  • the thickness of the thin portion 62 may be set to be thinner than the thickness of the negative electrode tab group G. Thereby, welding with the thin part 62 and the negative electrode tab group G can be performed suitably. Conversely, the thickness of the thin portion 62 may be made thicker than that of the negative electrode tab group G.
  • the welding mode between the positive electrode tab 31 and the positive electrode conductive member 41 is the same as the welding mode between the negative electrode tab 32 and the negative electrode conductive member 42, but is not limited thereto, and may be different.
  • the welding by the thin portion 62 may be applied only to the welding of the positive electrode tab 31 and the positive electrode conductive member 41.
  • the welding by the thin portion 62 is welded by the negative electrode tab 32 and the negative electrode conductive member 42. You may apply only to.
  • the negative electrode conductive member 42 has only one recess 51, but is not limited thereto, and may have a plurality of recesses 51.
  • the electrode assembly 14 includes a plurality of positive electrodes 21 and a plurality of negative electrodes 22, and these electrodes 21 and 22 are stacked via separators 23. Not limited. For example, a wound-type electrode assembly in which a belt-like positive electrode and a belt-like negative electrode are wound and laminated in layers may be used.
  • the recess 51 is circular when viewed from the thickness direction of the negative electrode conductive member 42, but is not limited thereto, and is arbitrary.
  • the size and shape of the welding electrode rod W1 are arbitrary as long as they can be inserted into the recess 51.
  • the size of the electrodes 21 and 22 is the same, but is not limited thereto, and the negative electrode 22 may be slightly larger than the positive electrode 21.
  • the negative electrode active material layer 22b may be slightly larger than the positive electrode active material layer 21b.
  • the positive electrode active material layer 21 b is provided on both surfaces of the positive electrode 21, but is not limited thereto, and may be provided on only one surface of the positive electrode 21.
  • the negative electrode active material layer 22 b may be provided only on one surface of the negative electrode 22.
  • the tabs and terminals having the same polarity among the conductive members 41 and 42 and the tabs 31 and 32 are made of the same metal.
  • the present invention is not limited thereto, and may be made of different metals. Good.
  • the target on which the secondary battery 10 of the embodiment is mounted is arbitrary.
  • the secondary battery 10 may be mounted on a vehicle such as an automobile or an industrial vehicle, or may be mounted on a stationary power storage unit.
  • the present invention may be applied to other power storage devices such as electric double layer capacitors.
  • the secondary battery 10 is a lithium ion secondary battery, but is not limited thereto, and may be another secondary battery such as nickel metal hydride. In short, any secondary battery that transfers ions while transferring ions between the positive electrode active material layer and the negative electrode active material layer may be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

L'invention concerne un appareil de stockage électrique qui comprend une électrode, un élément conducteur en forme de plaque, un boîtier, et une borne. L'électrode possède une partie d'extrémité comprenant une languette. L'élément conducteur est soudé à la languette. L'élément conducteur possède une section épaisse, une section fine, et une section étagée en tant que frontière entre la section épaisse et la section fine. La section fine possède une face inférieure venant en contact avec la section étagée et une face côté opposé sur le côté opposé à la face inférieure. Le boîtier loge l'électrode. La borne est agencée dans le boîtier, et est électriquement connectée à l'élément conducteur. La languette et l'élément conducteur sont soudés sur la face côté opposé de la section fine.
PCT/JP2013/075618 2012-09-25 2013-09-24 Appareil de stockage électrique WO2014050780A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012211045A JP2014067532A (ja) 2012-09-25 2012-09-25 蓄電装置
JP2012-211045 2012-09-25

Publications (1)

Publication Number Publication Date
WO2014050780A1 true WO2014050780A1 (fr) 2014-04-03

Family

ID=50388181

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/075618 WO2014050780A1 (fr) 2012-09-25 2013-09-24 Appareil de stockage électrique

Country Status (2)

Country Link
JP (1) JP2014067532A (fr)
WO (1) WO2014050780A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108604505A (zh) * 2016-03-18 2018-09-28 Jm能源股份有限公司 蓄电设备及其制造方法
CN111886717A (zh) * 2018-03-23 2020-11-03 三洋电机株式会社 二次电池
US20210226305A1 (en) * 2020-01-20 2021-07-22 Ningde Amperex Technology Limited Electrode assembly and battery
WO2023088434A1 (fr) * 2021-11-18 2023-05-25 珠海冠宇电池股份有限公司 Plaque et batterie

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5900538B2 (ja) 2014-03-27 2016-04-06 株式会社豊田自動織機 蓄電装置
US10741819B2 (en) 2015-03-23 2020-08-11 Kabushiki Kaisha Toyota Jidoshokki Electricity storage device and method for manufacturing electricity storage device
KR101890014B1 (ko) * 2015-04-27 2018-08-20 주식회사 엘지화학 전극 리드 및 이를 포함하는 고용량 전지 모듈
JP6519334B2 (ja) * 2015-06-12 2019-05-29 株式会社豊田自動織機 蓄電装置の製造方法
JP6641978B2 (ja) * 2015-12-21 2020-02-05 株式会社豊田自動織機 電極組立体の製造方法及び電極組立体
JP6922328B2 (ja) * 2017-03-29 2021-08-18 株式会社豊田自動織機 電極組立体の製造方法
JP6965587B2 (ja) * 2017-06-15 2021-11-10 株式会社豊田自動織機 電極組立体
JP7055983B2 (ja) * 2018-09-28 2022-04-19 太陽誘電株式会社 電気化学デバイス及び電気化学デバイスの製造方法
DE112019005353T5 (de) * 2018-10-26 2021-07-08 Gs Yuasa International Ltd. Energiespeichervorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08111216A (ja) * 1994-10-12 1996-04-30 Sanyo Electric Co Ltd 電池の製造方法
JP2000164195A (ja) * 1998-11-24 2000-06-16 Japan Storage Battery Co Ltd 非水電解質二次電池
JP2003249423A (ja) * 2001-12-20 2003-09-05 Toyota Motor Corp 蓄電素子およびその製造方法
JP2008226625A (ja) * 2007-03-12 2008-09-25 Toshiba Corp 捲回型電極電池およびその製造方法
JP2010073408A (ja) * 2008-09-17 2010-04-02 Toyota Motor Corp 電池及び電池の製造方法
WO2012057335A1 (fr) * 2010-10-29 2012-05-03 三洋電機株式会社 Batterie secondaire rectangulaire

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5618515B2 (ja) * 2009-09-25 2014-11-05 株式会社東芝 電池

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08111216A (ja) * 1994-10-12 1996-04-30 Sanyo Electric Co Ltd 電池の製造方法
JP2000164195A (ja) * 1998-11-24 2000-06-16 Japan Storage Battery Co Ltd 非水電解質二次電池
JP2003249423A (ja) * 2001-12-20 2003-09-05 Toyota Motor Corp 蓄電素子およびその製造方法
JP2008226625A (ja) * 2007-03-12 2008-09-25 Toshiba Corp 捲回型電極電池およびその製造方法
JP2010073408A (ja) * 2008-09-17 2010-04-02 Toyota Motor Corp 電池及び電池の製造方法
WO2012057335A1 (fr) * 2010-10-29 2012-05-03 三洋電機株式会社 Batterie secondaire rectangulaire

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108604505A (zh) * 2016-03-18 2018-09-28 Jm能源股份有限公司 蓄电设备及其制造方法
CN111886717A (zh) * 2018-03-23 2020-11-03 三洋电机株式会社 二次电池
US20210226305A1 (en) * 2020-01-20 2021-07-22 Ningde Amperex Technology Limited Electrode assembly and battery
CN114865240A (zh) * 2020-01-20 2022-08-05 宁德新能源科技有限公司 电池
US12080917B2 (en) * 2020-01-20 2024-09-03 Ningde Amperex Technology Limited Electrode assembly and battery
WO2023088434A1 (fr) * 2021-11-18 2023-05-25 珠海冠宇电池股份有限公司 Plaque et batterie

Also Published As

Publication number Publication date
JP2014067532A (ja) 2014-04-17

Similar Documents

Publication Publication Date Title
WO2014050780A1 (fr) Appareil de stockage électrique
JP5392368B2 (ja) 蓄電装置
JP5585701B2 (ja) 蓄電装置
JP5987662B2 (ja) 蓄電装置及び蓄電装置の製造方法
JP5966695B2 (ja) 蓄電装置
JP5991168B2 (ja) 蓄電装置及び蓄電装置の製造方法
WO2015098955A1 (fr) Dispositif de stockage d'électricité
JP2014107147A (ja) 蓄電装置
JP6756266B2 (ja) 蓄電装置及び蓄電装置の製造方法
JP2019061779A (ja) 蓄電装置及び蓄電装置の製造方法
WO2014156474A1 (fr) Appareil de stockage électrique
JP5838838B2 (ja) 蓄電装置、及び車両
JP6131557B2 (ja) リチウムイオン二次電池
JP2014112492A (ja) 蓄電装置
JP2019121433A (ja) 蓄電装置
JP5454649B1 (ja) 蓄電装置及び溶接方法
JP2015072828A (ja) 蓄電装置
JP2014067542A (ja) 蓄電装置、及び電極組立体の製造方法
JP6417760B2 (ja) 蓄電装置
JP6657810B2 (ja) 蓄電装置の製造方法、及び蓄電装置
JP2014056672A (ja) 蓄電装置、及び蓄電装置の製造方法
JP5724956B2 (ja) 蓄電装置
JP2016081743A (ja) 蓄電装置
JP2013229173A (ja) 蓄電装置
JP2019175689A (ja) 蓄電装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13841106

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13841106

Country of ref document: EP

Kind code of ref document: A1