WO2016121279A1 - 電池モジュール及び電池モジュールの解体方法 - Google Patents

電池モジュール及び電池モジュールの解体方法 Download PDF

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Publication number
WO2016121279A1
WO2016121279A1 PCT/JP2015/086048 JP2015086048W WO2016121279A1 WO 2016121279 A1 WO2016121279 A1 WO 2016121279A1 JP 2015086048 W JP2015086048 W JP 2015086048W WO 2016121279 A1 WO2016121279 A1 WO 2016121279A1
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WO
WIPO (PCT)
Prior art keywords
double
battery
sided tape
battery cells
battery module
Prior art date
Application number
PCT/JP2015/086048
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
正博 山田
浩生 植田
加藤　崇行
直人 守作
Original Assignee
株式会社豊田自動織機
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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 WO2016121279A1 publication Critical patent/WO2016121279A1/ja

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/54—Reclaiming serviceable parts of waste accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/84—Recycling of batteries or fuel cells

Definitions

  • One aspect of the present invention relates to a battery module and a battery module disassembly method.
  • Patent Document 1 describes the structure of a secondary battery.
  • the structure of the secondary battery includes a plurality of battery cells arranged in parallel and a cooling member inserted between adjacent battery cells so as to extend along the side surface of the battery cell.
  • battery cells adjacent to each other are fixed by a double-sided tape via a cooling member.
  • an object of one aspect of the present invention is to provide a battery module and a battery module disassembly method that can easily separate battery cells.
  • a battery module includes a plurality of battery cells stacked in a predetermined direction, and a double-sided tape that is disposed between battery cells adjacent to each other and fixes the battery cells to each other.
  • a non-adhering portion that does not contribute to fixing is provided in an area between adjacent battery cells and surrounded by the outer edge of the battery cell when viewed from a predetermined direction.
  • a non-adhering portion that does not contribute to adhering is provided in an area between adjacent battery cells and surrounded by an outer edge of the battery cell when viewed from a predetermined direction. For this reason, compared with the case where a battery cell adheres in the whole surrounding area, it becomes possible to peel away battery cells easily.
  • the non-adhering portion may include a non-adhesive portion configured by providing a portion having no adhesive force with respect to at least one of the adhesive surfaces of the double-sided tape.
  • the non-fixed portion can be easily configured using a double-sided tape.
  • the non-adhesive portion may be arranged such that the distance from the outer edge of the double-sided tape to the outer edge of the non-adhesive portion is substantially constant along the outer edge of the double-sided tape. .
  • variety of the part in which the non-adhesive part in the adhesive surface of a double-sided tape is not provided becomes substantially constant.
  • the solvent penetrates isotropically from the outer edge of the double-sided tape to the inside. For this reason, a solvent becomes easy to osmose
  • the non-adhesive portion may be provided such that the adhesive portions on the adhesive surface are separated from each other when viewed from a predetermined direction.
  • a non-adhesive part it becomes easy to peel battery cells, ensuring an adhesion area and suppressing the fall of adhesive strength.
  • the battery module according to one aspect of the present invention includes a heat transfer plate disposed between adjacent battery cells, the double-sided tape fixes the battery cells to each other via the heat transfer plate, and the non-fixed portion is A space portion provided in the heat transfer plate may be included so as to open to the double-sided tape side in the surrounding region. In this case, the non-fixed portion can be easily configured using the heat transfer plate.
  • the space portion may reach the outer edge of the heat transfer plate.
  • the solvent can be caused to flow into the space portion from the outer edge of the heat transfer plate.
  • the penetration of the solvent into the double-sided tape is promoted, the battery cells can be more easily separated from each other.
  • the space portion may reach the outer edge on the terminal side of the battery cell in the heat transfer plate.
  • the air in the space is led out from the outer edge of the heat transfer plate without immersing the battery cell terminal in the solvent.
  • a solvent can be introduced. For this reason, it becomes possible to peel battery cells more easily while ensuring safety.
  • a method for disassembling a battery module includes: a plurality of battery cells stacked in a predetermined direction; and a double-sided tape that is disposed between battery cells adjacent to each other and fixes the battery cells together.
  • a battery module disassembly method in which a non-adhering portion that does not contribute to fixation is provided in an area between adjacent battery cells and surrounded by an outer edge of the battery cell when viewed from a predetermined direction. The first step of immersing the battery module in a solvent and the second step of releasing the adhesion of the battery cells by the double-sided tape and peeling the battery cells after the first step.
  • the battery module has a non-adhered portion that does not contribute to fixation in an area between adjacent battery cells and surrounded by an outer edge of the battery cell when viewed from a predetermined direction. Is provided. For this reason, compared with the case where a battery cell adheres in the whole area of an enclosing area
  • FIG. 2 is a schematic plan view of the battery module shown in FIG. 1.
  • A is a figure which shows the heat-transfer plate and double-sided tape in the battery module shown by FIG.
  • B is sectional drawing which follows the IIIb-IIIb line
  • A) is a figure which shows the non-adhesion part which concerns on a modification.
  • B) is sectional drawing which follows the IVb-IVb line
  • A) is sectional drawing of the non-adhesion part which concerns on a modification.
  • B) is a figure which shows the non-adhesion part which concerns on another modification.
  • FIG. 7 is a figure which shows the space part which concerns on a modification.
  • FIG.8 is a perspective view which shows the space part shown by Fig.8 (a).
  • A) is a figure which shows the non-adhesion part which concerns on 3rd Embodiment.
  • (B) is a figure which shows the non-adhesion part which concerns on 3rd Embodiment.
  • FIG. 1 is a schematic side view of the battery module according to the first embodiment.
  • FIG. 2 is a schematic plan view of the battery module shown in FIG.
  • the battery module 1 according to the present embodiment includes a plurality of (for example, seven) battery cells 2 stacked in a predetermined direction.
  • the battery cell 2 is a nonaqueous electrolyte secondary battery such as a lithium ion secondary battery.
  • the battery cell 2 is electrically connected to an electrode assembly (not shown), a case 3 that houses the electrode assembly, and an electrode (a positive electrode and a negative electrode) of the electrode assembly, and a pair of protrusions protruding from the case 3 And a terminal 4.
  • the electrode assembly includes a plurality of positive and negative electrodes, and a separator disposed between the positive and negative electrodes.
  • the positive electrode and the negative electrode are alternately stacked via separators.
  • the electrode stacking direction in the electrode assembly and the battery cell 2 stacking direction substantially coincide.
  • Case 3 has a rectangular parallelepiped shape.
  • the case 3 includes a pair of side surfaces 3a and 3b facing each other, a pair of side surfaces 3c and 3d facing each other, and an upper surface 3e and a bottom surface 3f facing each other.
  • the side surfaces 3 a and 3 b are surfaces that intersect the stacking direction of the battery cells 2.
  • the side surfaces 3 c and 3 d are surfaces along the stacking direction of the battery cells 2.
  • the side surfaces 3c and 3d connect the side surface 3a and the side surface 3b.
  • the terminal 4 protrudes from the upper surface 3e.
  • Each of the battery cells 2 is individually held by a cell holder 5 (see FIG. 1). 2 to 8, the illustration of the cell holder 5 is omitted for simplification.
  • the battery module 1 includes a heat transfer plate 10 for heat dissipation of the battery cell 2.
  • the heat transfer plate 10 is disposed in a region A1 between adjacent battery cells 2 (battery cells 2A and 2B).
  • the heat transfer plate 10 is made of metal, for example.
  • the heat transfer plate 10 is formed in an L-shaped plate shape by a rectangular plate-shaped main body portion 11 and a rectangular plate-shaped standing portion 12.
  • the standing portion 12 is erected in a direction intersecting the main body portion 11 at one end of the main body portion 11.
  • the heat transfer plate 10 is attached to the case 3 so that the main body portion 11 is positioned on the side surface 3a of the case 3 and the standing portion 12 is positioned on the side surface 3c.
  • the standing portion 12 is used to transmit heat of the battery cell 2 to an external component (not shown) such as a battery pack housing. Therefore, the surface (surface on the opposite side to the battery cell 2) of the standing part 12 is made to contact an external component.
  • the double-sided tape 20 is disposed in a region A1 between the battery cells 2 adjacent to each other.
  • the double-sided tape 20 includes a pair of adhesive surfaces 21 and fixes the battery cells 2 together. More specifically, the double-sided tape 20 is interposed between the battery cell 2A and the heat transfer plate 10 and between the battery cell 2B and the heat transfer plate 10, respectively.
  • the double-sided tape 20 fixes the side surface 3a of the battery cell 2A (case 3) and the main body 11 of the heat transfer plate 10 to each other.
  • the double-sided tape 20 fixes the side surface 3b of the battery cell 2B (case 3) and the main body 11 of the heat transfer plate 10 to each other.
  • the double-sided tape 20 fixes the battery cells 2 to each other with the heat transfer plate 10 interposed therebetween.
  • the double-sided tape 20 has an insulating property, for example.
  • the battery cell 2 is held by the cell holder 5 and the heat transfer plate 10 is provided.
  • the battery cells 2 in this state are fixed to each other with the double-sided tape 20 and stacked in a predetermined direction to form a stacked body.
  • the some battery cell 2 is restrained and integrated by the restraining member from the both sides of the laminated body in the lamination direction of the battery cell 2.
  • the end plates 6 are disposed at both ends of the laminated body, and the end plates 6 are fastened to each other by a fastening member 7 such as a bolt, thereby restraining the battery cells 2 along the stacking direction of the battery cells 2.
  • a load is applied and the battery cells 2 are integrated.
  • an elastic member 8 is interposed between the battery cell 2 constituting one end of the stacked body in the stacking direction of the battery cells 2 and the end plate 6. The elastic member 8 is compressed when the battery cell 2 expands.
  • FIG. 3A is a diagram showing a heat transfer plate and a double-sided tape in the battery module shown in FIG.
  • FIG. 3B is a cross-sectional view taken along line IIIb-IIIb in FIG.
  • the double-sided tape 20 covers a region smaller than a region where the side surface 3a of the battery cell 2 and the main body portion 11 of the heat transfer plate 10 overlap when viewed from the stacking direction of the battery cell 2. It is pasted.
  • the shape of the double-sided tape 20 is substantially rectangular when viewed from the stacking direction of the battery cells 2.
  • a non-adherent portion 23 is provided in an area A1 between the battery cells 2 adjacent to each other and surrounded by the outer edge 2e of the battery cell 2 when viewed from the stacking direction of the battery cells 2. More specifically, a non-fixed portion 23 is provided in a region A3 surrounded by the outer edge 22 of the double-sided tape 20.
  • the outer edge 22 of the double-sided tape 20 is surrounded by the outer edge 2e of the battery cell 2, and the region A3 is included in the surrounding region A2.
  • the non-fixed portion 23 is a portion that does not contribute to the fixing of the battery cells 2 with the double-sided tape 20.
  • the non-adherent portion 23 is a non-adhesive portion 24 configured by providing a portion that does not have adhesive force with respect to one of the adhesive surfaces 21 of the double-sided tape 20.
  • the single non-adhesive part 24 is provided with respect to the adhesive surface 21 which touches the battery cell 2 among a pair of adhesive surfaces 21 of the double-sided tape 20.
  • the non-adhesive portion 24 is interposed between the side surface 3a and the double-sided tape 20 so as to contact the side surface 3a. Further, the non-adhesive portion 24 is interposed between the side surface 3 b and the double-sided tape 20 so as to be in contact with the side surface 3 b in the double-sided tape 20 on the side surface 3 b side of the battery cell 2.
  • the non-adhesive portion 24 is a film-like member that is thinner than the double-sided tape 20 and has no adhesiveness (for example, a release paper of the double-sided tape 20).
  • the non-adhesive portion 24 is configured by sticking a film-like member having no adhesive force to the adhesive surface 21 of the double-sided tape 20.
  • the shape of the non-adhesive portion (film-like member) 24 is a substantially rectangular shape that is substantially similar to the double-sided tape 20 when viewed from the stacking direction of the battery cells 2.
  • the non-adhesive part 24 is arranged so that the distance d from the outer edge 22 of the double-sided tape 20 to the outer edge 25 of the non-adhesive part 24 is substantially constant along the outer edge 22 of the double-sided tape 20. For this reason, when it sees from the lamination direction of the battery cell 2, the part in which the non-adhesion part 24 of the adhesion surface 21 of the double-sided tape 20 is not provided becomes a rectangular ring with the substantially constant width
  • the non-adhesive part 24 has resistance and insulation against a solvent (for example, ethanol or isopropyl alcohol) that penetrates the double-sided tape 20, for example.
  • a solvent for example, ethanol or isopropyl alcohol
  • a material for the non-adhesive portion 24 for example, a resin such as polyethylene or polypropylene is used.
  • a non-adhesive portion 23 that does not contribute to the adhesion between the battery cells 2 is provided. For this reason, compared with the case where the battery cell 2 adheres in the whole area of surrounding area A2, it becomes possible to peel
  • the non-adhesive portion 23 is a non-adhesive portion 24 configured by providing a portion that does not have an adhesive force with respect to one of the adhesive surfaces 21 of the double-sided tape 20. is there. In this way, the non-fixed portion 23 can be easily configured using the double-sided tape 20.
  • the non-adhesive portion 24 is such that the distance d from the outer edge 22 of the double-sided tape 20 to the outer edge 25 of the non-adhesive portion 24 is substantially constant along the outer edge 22 of the double-sided tape 20. It is arranged to be. In this case, the width d of the portion of the adhesive surface 21 of the double-sided tape 20 where the non-adhesive portion 24 is not provided is substantially constant.
  • the solvent penetrates isotropically from the outer edge 22 of the double-sided tape 20 to the inside. It becomes easy for the solvent to penetrate into the entire portion of the adhesive surface 21 where the non-adhesive portion 24 is not provided. Therefore, it becomes easy to peel battery cells 2 from each other.
  • the non-fixed portion 23 can be deformed as shown in FIG. 4.
  • the double-sided tape 20 is formed in a rectangular ring shape when viewed from the stacking direction of the battery cells 2. Therefore, the adhesive surface 21 in contact with the battery cell 2 among the adhesive surfaces 21 of the double-sided tape 20 is also formed in a rectangular ring shape when viewed from the stacking direction of the battery cells 2. That is, a rectangular opening 21 h is formed in the double-sided tape 20 and the adhesive surface 21.
  • the opening 21 h is a non-adhesive portion 24 that does not have an adhesive force provided on the adhesive surface 21, and is a non-adhesive portion 23 that does not contribute to the adhesion between the battery cells 2.
  • the opening 21h (non-adhesive portion 24) is arranged such that the distance d from the outer edge 22 of the double-sided tape 20 to the outer edge 25 of the opening 21h is substantially constant along the outer edge 22 of the double-sided tape 20. That is, the widths of the double-sided tape 20 and the adhesive surface 21 are substantially constant.
  • the non-adhesion part 24 (non-adhesion part 23) is comprised by providing the opening part 21h in the double-sided tape 20 and the adhesion surface 21, the material of the double-sided tape 20 can be reduced.
  • an insulating film-like member 24 a is interposed between the double-sided tape 20 and the main body 11 of the heat transfer plate 10. More specifically, between the double-sided tape 20 and the main body 11, the outer edge 24 b of the film-like member 24 a is positioned between the outer edge 22 and the inner edge 26 (the outer edge 25 of the opening 21 h) of the double-sided tape 20. As shown, a film-like member 24a is arranged. For this reason, when viewed from the stacking direction of the battery cells 2, at least one of the double-sided tape 20 and the film-like member 24 a exists between the battery cells 2 and the heat transfer plate 10. For this reason, even if the opening part 21h is provided in the double-sided tape 20, the insulation between the battery cell 2 and the heat-transfer plate 10 is ensured. Here, the film-like member 24 a is thinner than the double-sided tape 20.
  • the non-fixed portion 23 may be deformed as shown in FIG.
  • the film-like member 24a may be fitted into the opening 21h of the double-sided tape 20 and the adhesive surface 21 shown in FIG.
  • the thickness of the double-sided tape 20 and the thickness of the film-like member 24a are substantially the same.
  • the film-like member 24a here does not have adhesive force at least on the surface 24c in contact with the battery cell 2. Therefore, in this case, the surface 24c of the film-like member 24a is the non-adhesive portion 24 that does not have the adhesive force provided on the adhesive surface 21 and does not contribute to the fixation between the battery cells 2. 23. Also in this case, it is possible to achieve the same effect as the modification shown in FIG.
  • the non-fixed portion 23 may be deformed as shown in FIG. 5 (b). Specifically, a plurality of non-adhesive portions 24 are provided on the adhesive surface 21 in contact with the battery cell 2 of the pair of adhesive surfaces 21 of the double-sided tape 20. Each non-adhesion part 24 is comprised by sticking the film-like member which does not have adhesive force with respect to the adhesion surface 21 of the double-sided tape 20.
  • FIG. 5 (b) a plurality of non-adhesive portions 24 are provided on the adhesive surface 21 in contact with the battery cell 2 of the pair of adhesive surfaces 21 of the double-sided tape 20.
  • Each non-adhesion part 24 is comprised by sticking the film-like member which does not have adhesive force with respect to the adhesion surface 21 of the double-sided tape 20.
  • the shape of the non-adhesive portion 24 is a substantially rectangular shape that is substantially the same as viewed from the stacking direction of the battery cells 2.
  • the shape of the outer edge 25 as a whole of the plurality of non-adhesive portions 24 is substantially rectangular.
  • the distance d from the outer edge 22 of the double-sided tape 20 to the outer edge 25 as a whole of the plurality of non-adhesive portions 24 is arranged so as to be substantially constant along the outer edge 22 of the double-sided tape 20.
  • the battery cell 2 may expand due to, for example, its charge state or aging. In that case, the battery cell 2 is deformed so that the thickness of the central portion is relatively larger than the thickness of the outer edge portion. In the vicinity of the outer edge 22 of the double-sided tape 20, the battery cell 2 and the main body 11 of the heat transfer plate 10 are about to leave.
  • the battery module 1 it is possible to achieve both the securing of the adhesive strength in the vicinity of the outer edge 22 of the double-sided tape 20 and the easy separation of the battery cells 2.
  • FIG. 6 is a schematic plan view of the battery module according to the second embodiment.
  • the battery module 1 ⁇ / b> A has a heat transfer plate 10 ⁇ / b> A instead of the heat transfer plate 10 and a non-adhesive portion with respect to the adhesive surface 21 of the double-sided tape 20, compared to the battery module 1.
  • the battery module 1 is different in that 24 is not provided.
  • FIGS. 7A and 7B are diagrams showing a heat transfer plate and a double-sided tape in the battery module shown in FIG.
  • the heat transfer plate 10 ⁇ / b> A is configured in the same manner as the heat transfer plate 10 except for the main body portion 11 ⁇ / b> A. That is, the heat transfer plate 10 ⁇ / b> A is disposed in the area A ⁇ b> 1 between the battery cells 2 adjacent to each other.
  • the heat transfer plate 10 ⁇ / b> A is formed in an L-shaped plate shape by a rectangular plate-shaped main body portion 11 ⁇ / b> A and a rectangular plate-shaped standing portion 12.
  • the standing portion 12 is erected in a direction intersecting the main body portion 11A at one end of the main body portion 11A.
  • the heat transfer plate 10A is attached to the case 3 so that the main body portion 11A is located on the side surface 3a of the case 3 and the standing portion 12 is located on the side surface 3c.
  • the double-sided tape 20 is interposed between the battery cell 2A and the heat transfer plate 10A and between the battery cell 2B and the heat transfer plate 10A, respectively.
  • the double-sided tape 20 fixes the side surface 3a of the case 3 of the battery cell 2A and the main body 11A of the heat transfer plate 10A to each other.
  • the double-sided tape 20 fixes the side surface 3b of the case 3 of the battery cell 2B and the main body 11A of the heat transfer plate 10A to each other.
  • the double-sided tape 20 fixes the battery cells 2 to each other through the heat transfer plate 10A.
  • the non-fixed portion 23 is a portion that does not contribute to the fixing of the battery cells 2 with the double-sided tape 20.
  • the non-adherent portions 23 are space portions 30 and 31 provided in the heat transfer plate 10A so as to open to the double-sided tape 20 side in the surrounding region A2.
  • the space portions 30 and 31 are provided on both surfaces of the main body portion 11A of the heat transfer plate 10A.
  • the main body 11A includes a pair of outer edges E1, E2 facing each other and a pair of outer edges E3, E4 facing each other.
  • the outer edge E1 is an outer edge of the battery cell 2 on the terminal 4 side (upper surface 3e side).
  • the outer edge E ⁇ b> 2 is an outer edge on the bottom surface 3 f side of the battery cell 2.
  • the outer edge E ⁇ b> 3 is an outer edge on the side surface 3 c side of the battery cell 2.
  • the outer edge E4 is an outer edge on the side surface 3d side of the battery cell 2.
  • the space part 30 is a groove extending along the outer edges E3 and E4 so as to reach both the outer edge E1 and the outer edge E2 of the main body part 11A.
  • the space 30 reaches the outer edge E1 on the terminal 4 side of the battery cell 2 in the heat transfer plate 10A.
  • the space portion 31 is a groove extending along the outer edges E1 and E2 so as to reach both the outer edge E3 and the outer edge E4 of the main body portion 11A.
  • the space part 30 and the space part 31 intersect (orthogonal) each other at the central part of the main body part 11A.
  • the space 30 and the space 31 are connected to each other at the intersection.
  • the adhesive surface 21 of the double-sided tape 20 is not in contact with the heat transfer plate 10A (main body portion 11A) in the space portions 30 and 31.
  • the double-sided tape 20 does not fix the battery cells 2 at positions corresponding to the space portions 30 and 31. Therefore, the space portions 30 and 31 described above function as the non-fixed portion 23 that does not contribute to the bonding between the battery cells 2.
  • the width along the outer edge E1 and the outer edge E2 in the space portion 30 and the width along the outer edge E3 and the outer edge E4 in the space portion 31 are within a range in which the solvent that permeates the double-sided tape 20 can flow into the space portions 30 and 31. It can be set arbitrarily.
  • the battery module 1A includes the heat transfer plate 10A arranged between the battery cells 2 adjacent to each other.
  • the double-sided tape 20 adheres the battery cells 2 to each other via the heat transfer plate 10A.
  • the non-fixed portion 23 is a space portion 30, 31 provided in the main body portion 11A of the heat transfer plate 10A so as to open to the double-sided tape 20 side in the surrounding region A2.
  • the non-fixed portion 23 can be easily configured using the heat transfer plate 10 ⁇ / b> A.
  • the space portions 30 and 31 reach the outer edges E1 to E4 of the main body portion 11A of the heat transfer plate 10A. For this reason, for example, when the battery module 1A is immersed in a solvent, the solvent can flow into the space portions 30 and 31 from the outer edges E1 to E4 of the main body portion 11A. As a result, since the penetration of the solvent into the double-sided tape 20 is promoted, the battery cells 2 can be more easily separated from each other.
  • the space 30 reaches the outer edge E1 on the terminal 4 side of the battery cell 2 in the main body 11A.
  • the space portion 31 is connected to such a space portion 30. For this reason, for example, by immersing the battery module 1A in a solvent with the terminal 4 side of the battery cell 2 facing upward, the space portions 30, 31 from the outer edge E1 of the main body portion 11A without immersing the terminal 4 of the battery cell 2 in the solvent. It is possible to allow the solvent to flow into the space portions 30 and 31 while deriving the air. For this reason, it becomes possible to peel battery cells 2 more easily while ensuring safety.
  • the extending direction of the space portion 31 was along the outer edges E1 and E2 of the main body portion 11A of the heat transfer plate 10A.
  • the extending direction of the space portion 31 may not be along the outer edges E1 and E2 of the main body portion 11A.
  • the space 31 may be inclined so as to approach the outer edge E1 as it moves away from the outer edges E3, E4 of the main body 11A (that is, toward the center of the main body 11A).
  • FIGS. 9A and 9B are views showing a non-adhesive part according to the third embodiment.
  • the battery module 1B is different from the battery module 1 in that the non-adhesive portion 24 is provided so that the adhesive portions 21a of the adhesive surface 21 are separated from each other when viewed from the stacking direction of the battery cells 2.
  • the adhesive portion 21 a is a portion having adhesive force on the adhesive surface 21 of the double-sided tape 20, and is a portion that does not overlap with the non-adhesive portion 24 when viewed from the stacking direction of the battery cells 2.
  • the shape of the adhesive portion 21 a is circular as viewed from the stacking direction of the battery cells 2.
  • the adhesive portions 21a are two-dimensionally arranged in the surrounding area A2 so as to be separated from each other.
  • the non-adhesion part 24 sees from the lamination direction of the battery cell 2, between the adhesion parts 21a adjacent to each other, and the outermost adhesion part 21a and the outer edge of the surrounding area A2 (the outer edge 2e of the battery cell 2). It is provided in between.
  • the adhesive portion 21a and the non-adhesive portion 24 divide the adhesive surface 21 of the double-sided tape 20 into a plurality of circular regions and attach them to the heat transfer plate 10 so as to be separated from each other. Can be formed.
  • the battery cell 2 is separated from the heat transfer plate 10 by the thickness of the double-sided tape 20. That is, a space corresponding to the non-adhesive portion 24 is formed between the battery cell 2 and the heat transfer plate 10. And the space (non-adhesion part 24) has reached the outer edge of surrounding area A2. For this reason, for example, when the battery module 1B is immersed in a solvent, the solvent can be caused to flow into the non-adhesive portion 24 from the outer edge of the surrounding region A2. As a result, since the penetration of the solvent into the double-sided tape 20 is promoted, the battery cells 2 can be more easily separated from each other.
  • the adhesive portion 21a can be distributed (arranged) in the surrounding area A2 without deviation as viewed from the stacking direction of the battery cells 2. Therefore, while ensuring the ease of peeling between the battery cells 2, it is possible to suppress a bias in adhesive force and suppress a decrease in adhesive strength.
  • the shape of the adhesive portion 21a can be arbitrarily set.
  • the shape of the adhesive portion 21 a may be rectangular when viewed from the stacking direction of the battery cells 2.
  • the plurality of rectangular adhesive portions 21a are arranged in parallel to each other.
  • the non-adhesive part 24 is provided with the non-adhesive part 24 so that the adhesive parts 21 a are separated from each other when viewed from the stacking direction of the battery cells 2.
  • a non-adhesive film-like member for example, release paper
  • the above embodiment is an embodiment of the battery module according to one aspect of the present invention. Therefore, the battery module according to one aspect of the present invention is not limited to the battery modules 1, 1A, 1B described above.
  • the battery module according to one aspect of the present invention can arbitrarily modify the above-described battery modules 1, 1A, 1B without departing from the spirit of each claim.
  • the non-adhesive portion 24 is provided so as to be in contact with the side surfaces 3 a and 3 b of the battery cell 2 (case 3), but is in contact with the heat transfer plate 10. May be provided.
  • the non-adhesive portion 24 is provided on both the double-sided tape 20 on the side surface 3a side of the battery cell 2 and the double-sided tape 20 on the side surface 3b side of the battery cell 2.
  • the non-adhesive part 24 may be provided only in one of these double-sided tapes 20.
  • the space portions 30 and 31 are provided on both surfaces of the main body portion 11A, but may be provided only on one surface of the main body portion 11A.
  • the space portions 30 and 31 may not reach the outer edges E1 to E4 of the main body portion 11A, or may reach only a part of the outer edges E1 to E4. Further, the space portions 30 and 31 are not limited to grooves, and can be formed by arbitrarily missing a part of the main body portion 11A such as a recess, a hole, or a notch. Furthermore, you may apply 10 A of heat-transfer plates in which the space parts 30 and 31 as the non-adhering part 23 were provided with respect to the battery module 1 which concerns on 1st Embodiment. Or you may provide the non-adhesion part 24 as the non-adhesion part 23 with respect to the double-sided tape 20 of the battery module 1A which concerns on 2nd Embodiment.
  • the double-sided tape 20 was affixed over the area
  • the double-sided tape 20 May be affixed over substantially the entire region where the side surface 3a of the battery cell 2 and the main body 11 of the heat transfer plate 10 overlap as viewed from the stacking direction of the battery cell 2.
  • the battery module disassembly method according to the present embodiment is a disassembly method of the battery modules 1, 1 ⁇ / b> A, and 1 ⁇ / b> B described above, and includes a first step and a second step.
  • the battery modules 1, 1 ⁇ / b> A, 1 ⁇ / b> B are immersed in the solvent, and the penetration of the solvent into the double-sided tape 20 is achieved.
  • the battery modules 1, 1 ⁇ / b> A, and 1 ⁇ / b> B are immersed in the solvent so that the terminal 4 side of the battery cell 2 faces upward and the terminal 4 of the battery cell 2 is not immersed in the solvent.
  • the second step is performed.
  • the adhesion between the battery cells 2 by the double-sided tape 20 is released, and the battery cells 2 are peeled off.
  • the adhesive strength of the adhesive surface 21 is reduced to a certain degree, and the adhesion between the battery cells 2 by the double-sided tape 20 is released, and the battery cells 2 are easily separated from each other. Is done.
  • the battery modules 1, 1 ⁇ / b> A, and 1 ⁇ / b> B are surrounded by the outer edge 2 e of the battery cell 2 in the region A ⁇ b> 1 between the battery cells 2 adjacent to each other as viewed from the stacking direction of the battery cells 2.
  • the surrounding area A2 particularly, the area A3 surrounded by the outer edge 22 of the double-sided tape 20
  • a non-adhering portion 23 that does not contribute to fixing is provided.
  • the battery cells 2 can be easily separated from each other after the battery modules 1, 1A, 1B are immersed in the solvent in the first step. It becomes possible.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
PCT/JP2015/086048 2015-01-28 2015-12-24 電池モジュール及び電池モジュールの解体方法 WO2016121279A1 (ja)

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JP2015-013916 2015-01-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210143379A1 (en) * 2019-11-13 2021-05-13 Tdk Corporation Stacked battery pack
US20230060659A1 (en) * 2021-09-01 2023-03-02 Rivian Ip Holdings, Llc Systems and methods for disassembling a battery module
WO2023035635A1 (zh) * 2021-09-13 2023-03-16 广东邦普循环科技有限公司 Ctp电池包单体梯次利用拆解工艺

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102671485B1 (ko) * 2018-10-18 2024-05-30 주식회사 엘지에너지솔루션 폐전지로부터의 금속 회수 방법 및 시스템
JP7243287B2 (ja) * 2019-02-26 2023-03-22 Dic株式会社 電池用包装フィルムおよび電池
CN113889698B (zh) * 2020-06-17 2022-11-11 比亚迪股份有限公司 储能机柜及其消防系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007123016A (ja) * 2005-10-27 2007-05-17 Densei Lambda Kk 電池パック
JP2012018915A (ja) * 2010-07-06 2012-01-26 Sb Limotive Co Ltd 電池モジュール
JP2013251241A (ja) * 2012-06-04 2013-12-12 Toshiba Corp 二次電池装置および二次電池装置の製造方法
WO2014034107A1 (ja) * 2012-08-30 2014-03-06 三洋電機株式会社 電源装置及び電源装置を備える電動車両並びに蓄電装置
JP2014165102A (ja) * 2013-02-27 2014-09-08 Denso Corp 電池ユニット

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007123016A (ja) * 2005-10-27 2007-05-17 Densei Lambda Kk 電池パック
JP2012018915A (ja) * 2010-07-06 2012-01-26 Sb Limotive Co Ltd 電池モジュール
JP2013251241A (ja) * 2012-06-04 2013-12-12 Toshiba Corp 二次電池装置および二次電池装置の製造方法
WO2014034107A1 (ja) * 2012-08-30 2014-03-06 三洋電機株式会社 電源装置及び電源装置を備える電動車両並びに蓄電装置
JP2014165102A (ja) * 2013-02-27 2014-09-08 Denso Corp 電池ユニット

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210143379A1 (en) * 2019-11-13 2021-05-13 Tdk Corporation Stacked battery pack
CN112803091A (zh) * 2019-11-13 2021-05-14 Tdk株式会社 层叠型电池组
CN112803091B (zh) * 2019-11-13 2024-03-22 Tdk株式会社 层叠型电池组
US12142777B2 (en) * 2019-11-13 2024-11-12 Tdk Corporation Stacked battery pack
US20230060659A1 (en) * 2021-09-01 2023-03-02 Rivian Ip Holdings, Llc Systems and methods for disassembling a battery module
US12148901B2 (en) * 2021-09-01 2024-11-19 Rivian Ip Holdings, Llc Systems and methods for disassembling a battery module
WO2023035635A1 (zh) * 2021-09-13 2023-03-16 广东邦普循环科技有限公司 Ctp电池包单体梯次利用拆解工艺

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