WO2015170581A1 - Module de batterie - Google Patents

Module de batterie Download PDF

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Publication number
WO2015170581A1
WO2015170581A1 PCT/JP2015/062078 JP2015062078W WO2015170581A1 WO 2015170581 A1 WO2015170581 A1 WO 2015170581A1 JP 2015062078 W JP2015062078 W JP 2015062078W WO 2015170581 A1 WO2015170581 A1 WO 2015170581A1
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WO
WIPO (PCT)
Prior art keywords
plate
end plate
bolt
battery
battery cells
Prior art date
Application number
PCT/JP2015/062078
Other languages
English (en)
Japanese (ja)
Inventor
和樹 前田
加藤 崇行
浩生 植田
直人 守作
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
Priority claimed from JP2014095975A external-priority patent/JP6252776B2/ja
Priority claimed from JP2014172852A external-priority patent/JP6421497B2/ja
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 WO2015170581A1 publication Critical patent/WO2015170581A1/fr

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present invention relates to a battery module having a plurality of battery cells.
  • Patent Document 1 A battery module in which a plurality of battery cells are connected to form a module is described in Patent Document 1, for example.
  • Patent Document 1 a plurality of battery cells are arranged in a line to constitute a battery module.
  • An object of the present invention is to provide a battery module capable of suppressing deformation.
  • a battery module that solves the above problems includes a plurality of battery cells arranged in a row, a first end plate and a second end plate that sandwich the plurality of battery cells from both sides in the arrangement direction, and the first end plate. And an intermediate plate provided between the battery cells adjacent to the first end plate and configured to move in the arrangement direction with expansion of the plurality of battery cells, the intermediate plate, and the first An elastic member provided between the end plate and configured to be elastically deformed by being pressed by the movement of the intermediate plate accompanying expansion of the battery cell, and held by the first end plate, And a support member that supports from a direction orthogonal to the arrangement direction.
  • FIG. 5A is a front view showing the first end plate of FIG. 2
  • FIG. 5B is a sectional view taken along line 5b-5b of FIG.
  • the disassembled perspective view which shows the assembly
  • the perspective view which shows the 1st cover member of FIG.
  • the battery module 10 includes a plurality of battery cells 11 arranged in a row and a plurality of heat transfer plates 41.
  • the battery cells 11 and the heat transfer plates 41 are alternately arranged.
  • Each of the plurality of battery holders 20 holds one battery cell 11 and one heat transfer plate 41.
  • the battery cell 11 and the heat transfer plate 41 are sandwiched between a first end plate 61 and a second end plate 62 provided on both sides of the battery cell 11 in the arrangement direction.
  • one of the battery cells 11 at both ends in the arrangement direction is a first battery cell 11a, and the other is a second battery cell 11b.
  • the first battery cell 11 a is adjacent to the first end plate 61
  • the second battery cell 11 b is adjacent to the second end plate 62.
  • a flat intermediate plate 51 is provided between the first end plate 61 and the first battery cell 11a.
  • a flat elastic member 31 is provided between the intermediate plate 51 and the first end plate 61.
  • the elastic member 31 is made of an elastically deformable material such as rubber or a resin sponge.
  • the battery holder 20 and the intermediate plate 51 are made of resin, and the end plates 61 and 62 are made of metal.
  • the battery holder 20 has a first covering wall 21 having a rectangular flat plate shape.
  • a rectangular flat plate-like second covering wall 22 and a third covering wall 23 are respectively provided at both ends in the longitudinal direction of the first covering wall 21.
  • the second and third covering walls 22 and 23 extend in the thickness direction of the first covering wall 21, in other words, in the direction orthogonal to the first covering wall 21.
  • a region surrounded by the first covering wall 21, the second covering wall 22, and the third covering wall 23 is a housing portion S in which the battery cell 11 is housed.
  • the second covering wall 22 has a first end 22a in the longitudinal direction and a second end 22c in the longitudinal direction opposite to the first end 22a.
  • the third covering wall 23 has a longitudinal first end 23a and a longitudinal second end 23c opposite to the first end 23a.
  • the first covering wall 21 is connected to the second ends 22 c and 23 c in the longitudinal direction of the second and third covering walls 22 and 23.
  • the rectangular flat plate-like fourth covering wall 24 is connected to the first longitudinal ends 22 a and 23 a of the second and third covering walls 22 and 23.
  • the fourth covering wall 24 extends between the first ends 22 b and 23 b in the short direction of the covering walls 22 and 23.
  • the thickness direction of the fourth covering wall 24 coincides with the short direction of the covering walls 22 and 23.
  • the second covering wall 22 and the third covering wall 23 face each other in the longitudinal direction of the fourth covering wall 24.
  • the direction perpendicular to both the thickness direction and the longitudinal direction of the fourth covering wall 24 is the short direction of the fourth covering wall
  • terminal accommodating portions 25 that are U-shaped and open in the thickness direction of the fourth covering wall 24 are provided.
  • the terminal accommodating portion 25 is continuous with the second covering wall 22 and the third covering wall 23, respectively.
  • the fourth covering wall 24 is provided with two square columnar column portions 26, and each column portion 26 is adjacent to the corresponding terminal accommodating portion 25.
  • Each column portion 26 has an axis extending in the short direction of the covering walls 22 and 23.
  • Each column part 26 has an insertion hole 26 a, and each insertion hole 26 a extends in the axial direction of the column part 26 so as to penetrate the corresponding column part 26.
  • a rectangular flat plate-like projecting wall 27 extends from the first longitudinal ends 22a, 23a of the second covering wall 22 and the third covering wall 23 in the longitudinal direction of the corresponding covering walls 22, 23, and is opposed to each other.
  • Each protruding wall 27 is formed integrally with the corresponding covering wall 22, 23.
  • Square columnar leg portions 28 are provided on the second end portions 22c and 23c in the longitudinal direction of the second covering wall 22 and the third covering wall 23, respectively.
  • Each leg portion 28 has an axis extending in the short direction of the covering walls 22 and 23.
  • Each leg portion 28 has an insertion hole 28 a, and each insertion hole 28 a extends in the axial direction of the leg portion 28 so as to penetrate the corresponding leg portion 28.
  • the battery cell 11 includes a case 12 and an electrode assembly 13 housed in the case 12 and having a positive electrode and a negative electrode.
  • the case 12 includes a square cylindrical case main body 14 having a bottom and an opening, and a lid member 15 that closes the opening.
  • the lid member 15 is provided with two terminals 16, that is, a positive terminal and a negative terminal.
  • a connection member for connecting the battery cells 11 to each other is connected to each terminal 16.
  • the heat transfer plate 41 is formed by bending a metal plate material into an L shape.
  • the heat transfer plate 41 includes a rectangular flat plate-like main body 42 and a bent portion 43 extending from one end in the longitudinal direction of the main body 42 in the thickness direction of the main body 42.
  • the intermediate plate 51 has a rectangular flat base 52.
  • the base 52 includes a plurality of protrusions 53 and 54 that extend in opposite directions from both short-side ends of the base 52. More specifically, two first protrusions 53 are provided at one end of the both ends in the short direction of the base 52, and two second protrusions 54 are provided at the other end. .
  • the first protrusions 53 are provided in the longitudinal direction of the base 52 at a position near the center in the longitudinal direction of the base 52 and spaced from each other. Each first protrusion 53 has an intermediate bolt hole 55 and a through hole 56 that penetrate the first protrusion 53 in the thickness direction. The interval between the intermediate bolt holes 55 is the same as the interval between the insertion holes 26 a of the column part 26 of the battery holder 20.
  • the second protrusions 54 are provided near both ends of the base 52 in the longitudinal direction.
  • Each second protrusion 54 has an intermediate bolt hole 57.
  • the interval between the intermediate bolt holes 57 is the same as the interval between the insertion holes 28 a of the leg portions 28 of the battery holder 20.
  • the first end plate 61 has a plate base 63 having a rectangular flat plate shape.
  • the plate base 63 has two first plate protrusions 64 and two second plate protrusions 65 extending in opposite directions from both ends in the short direction of the plate base 63.
  • Each first plate protrusion 64 has a first bolt hole 66 that penetrates the first plate protrusion 64 in the thickness direction.
  • the distance between the first bolt holes 66 that is, the distance between the centers of the first bolt holes 66 is the same as the distance between the insertion holes 26 a of the column part 26 of the battery holder 20.
  • Each second plate protrusion 65 has a first bolt hole 67 that penetrates the second plate protrusion 65 in the thickness direction.
  • the distance between the first bolt holes 67 that is, the distance between the centers of the first bolt holes 67 is the same as the distance between the insertion holes 28 a of the leg portions 28 of the battery holder 20.
  • the diameter of the first bolt hole 66 is the same as the diameter of the first bolt hole 67.
  • each screw hole 68 is provided around each of the two plate protrusions 64 and 65 around the two plate protrusions 64 and 65.
  • Each screw hole 68 has a female screw on its inner peripheral surface.
  • Each positioning plate 70 is fixed to the first end plate 61.
  • the positioning plates 70 are provided at four locations, that is, locations corresponding to the total four plate protrusions 64 and 65, respectively.
  • Each positioning plate 70 has a small hole 71 that penetrates the positioning plate 70 in the thickness direction and aligns with the first bolt holes 66 and 67 of the corresponding plate protrusions 64 and 65.
  • the diameter of the small hole 71 is smaller than the diameter of the first bolt holes 66 and 67.
  • Each positioning plate 70 has two fixing holes 72 that penetrate the positioning plate 70 in the thickness direction and align with the two screw holes 68 of the first end plate 61.
  • the diameter of the fixing hole 72 is larger than the diameter of the screw hole 68.
  • the second end plate 62 has a plate base 73, two first plate protrusions 74 and two second plate protrusions 75 extending from the plate base 73.
  • the shape of the plate base 73 is the same as the shape of the plate base 63 of the first end plate 61.
  • the shapes of the first and second plate protrusions 74 and 75 are the same as the shapes of the first and second plate protrusions 64 and 65 of the first end plate 61. That is, the outer shape of the second end plate 62 is the same as the outer shape of the first end plate 61.
  • Each first plate protrusion 74 has a second bolt hole 76 that penetrates the first plate protrusion 74 in its thickness direction.
  • the distance between the second bolt holes 76 that is, the distance between the centers of the second bolt holes 76 is the same as the distance between the insertion holes 26 a of the column part 26 of the battery holder 20.
  • Each first plate protrusion 74 has a through-hole 77 that passes through the first plate protrusion 74 in the thickness direction.
  • Each second plate protrusion 75 has a second bolt hole 78 that penetrates the second plate protrusion 75 in the thickness direction.
  • the distance between the second bolt holes 78 that is, the distance between the centers of the second bolt holes 78 is the same as the distance between the insertion holes 28 a of the legs 28 of the battery holder 20.
  • the diameter of the second bolt hole 76 is the same as the diameter of the second bolt hole 78.
  • the diameters of the second bolt holes 76 and 78 of the second end plate 62 are smaller than the diameters of the first bolt holes 66 and 67 of the first end plate 61.
  • the plurality of battery cells 11, the plurality of heat transfer plates 41, the plurality of battery holders 20, the intermediate plate 51, and the elastic member 31 include a first end plate 61 and a second end plate 62. It is pinched by. Since the thickness direction of the elastic member 31, the thickness direction of the intermediate plate 51, and the thickness direction of the end plates 61 and 62 are the same as the arrangement direction of the battery cells 11, these thickness directions are hereinafter simply referred to as “thickness direction”. That's it.
  • the battery cells 11 adjacent to each other in the arrangement direction of the battery cells 11 and the main body 42 of the heat transfer plate 41 are bonded to each other by an adhesive sheet 32 having adhesive force.
  • each heat transfer plate 41 covers the second covering wall 22 of the corresponding battery holder 20.
  • Each bent portion 43 is in close contact with a housing or the like via a heat conductive member (not shown).
  • each positioning plate 70 is fixed to the plate base 63 of the first end plate 61 by two screws S1. Screws S ⁇ b> 1 are inserted into the two fixing holes 72 of each positioning plate 70, and these screws S ⁇ b> 1 are screwed into the screw holes 68 of the first end plate 61. Thereby, the positioning plate 70 is provided so that the small hole 71 of each positioning plate 70 and the corresponding first bolt holes 66 and 67 of the first end plate 61 are aligned.
  • the four bolts 80 are inserted through the four second bolt holes 76 and 78 of the second end plate 62 in the arrangement direction of the battery cells 11, respectively.
  • Each bolt 80 is screwed with a nut 85.
  • a load (restraint load) acts on the first end plate 61 and the second end plate 62 in a direction approaching each other, whereby the end plates 61 and 62 restrain the battery cell 11.
  • the intermediate bolt holes 55 and 57 of the intermediate plate 51, the first bolt holes 66 and 67 of the first end plate 61, and the second bolt holes 76 and 78 of the second end plate 62 function as bolt holes.
  • the bolt 80 is inserted into the intermediate bolt holes 55 and 57 of the intermediate plate 51 and the first bolt holes 66 and 67 of the first end plate 61, so that the intermediate plate 51 is orthogonal to the arrangement direction of the battery cells 11 by the bolts 80. It is supported from the direction to do. That is, the movement of the intermediate plate 51 in the direction orthogonal to the arrangement direction of the battery cells 11 with the elastic deformation of the elastic member 31 is restricted by the bolt 80 held by the first end plate 61.
  • Each bolt 80 has a head part 81 and a shaft part 82.
  • the shaft portion 82 includes a cylindrical portion 83 that extends in the axial direction from the head portion 81 and a screw portion 84 that extends in the axial direction from the tip of the cylindrical portion 83.
  • the diameter of the screw portion 84 is smaller than the diameter of the cylindrical portion 83.
  • the diameter of the threaded portion 84 is the diameter of the top of the thread. That is, the bolt 80 of the present embodiment is a stepped bolt having a step at the boundary between the cylindrical portion 83 and the screw portion 84.
  • the diameter of the cylindrical portion 83 is smaller than the diameter of the small hole 71 of the positioning plate 70 and larger than the second bolt holes 76 and 78 of the second end plate 62.
  • the diameter of the small hole 71 is smaller than the first bolt holes 66 and 67 of the first end plate 61
  • the diameter of the cylindrical portion 83 is smaller than the first bolt holes 66 and 67 of the first end plate 61.
  • the diameter of the screw portion 84 is smaller than the second bolt holes 76 and 78 of the second end plate 62.
  • the bolts 80 are inserted from the first bolt holes 66 and 67 of the first end plate 61 toward the second bolt holes 76 and 78 of the second end plate 62 through the small holes 71 of the positioning plate 70. .
  • a nut 85 is screwed onto the tip of each bolt 80 that extends outward beyond the second end plate 62.
  • each bolt 80 extends from the first end plate 61 to a position beyond the intermediate plate 51. Since the diameter of the first bolt holes 66 and 67 of the first end plate 61 is larger than the diameter of the small hole 71, the outer peripheral surface of each cylindrical portion 83 is in contact with the inner peripheral surface of the corresponding small hole 71, It does not contact the inner peripheral surface of the corresponding first bolt hole 66, 67. Therefore, the first end plate 61 holds the bolt 80 via the positioning plate 70 fixed to the first end plate 61.
  • the battery module 10 has a cover 90.
  • the cover 90 faces the surface of the battery cell 11 on which the terminal 16 is provided, in other words, the cover member 15, and is disposed between the two protruding walls 27 of each battery holder 20.
  • the cover 90 includes a first cover member 91 and a second cover member 92.
  • the first cover member 91 and the second cover member 92 are arranged in the arrangement direction of the battery cells 11.
  • the first cover member 91 has a rectangular flat plate-like main body 93.
  • the main body 93 includes side wall portions (standing wall portions) 94 extending from both longitudinal ends of the main body 93 in the thickness direction of the main body 93.
  • the main body 93 has a through hole 95 that penetrates the main body 93 in the thickness direction. The through hole 95 is provided near one corner of the four corners of the main body 93.
  • the main body 93 includes two square columnar fixing portions 96 on the surface opposite to the surface on which the side wall portion 94 is provided (the surface facing the lid member 15).
  • the fixing portions 96 are both provided at one of the end portions of the main body 93 in the short direction.
  • the fixing portions 96 are provided at intervals in the longitudinal direction of the main body 93.
  • a nut 97 is embedded in each fixing portion 96 by insert molding or the like. The interval between the nuts 97 embedded in the fixing portion 96, that is, the distance between the centers of the nuts 97 is the same as the interval between the through holes 56 of the intermediate plate 51.
  • a fixing plate 98 is provided on the surface of the main body 93 in the thickness direction where the side wall portion 94 is provided (the surface opposite to the surface on which the fixing portion 96 is provided). Yes.
  • the fixing plate 98 is provided in the vicinity of the through hole 95.
  • a nut 99 is embedded in the fixed plate 98 by insert molding or the like.
  • the second cover member 92 has the same configuration as the first cover member 91 except that the fixing plate 98 is not provided. Are given the same reference numerals and their description is omitted.
  • the first cover member 91 and the second cover member 92 are arranged so that the corners of the main body 93 adjacent to the through hole 95 are located diagonally.
  • the first cover member 91 is located closer to the first end plate 61
  • the second cover member 92 is located closer to the second end plate 62.
  • the side wall portion 94 of the first cover member 91 and the side wall portion 94 of the second cover member 92 are provided along the protruding wall 27 of the battery holder 20, respectively.
  • the first cover member 91 and the second cover member 92 are not fixed to each other and can be separated from each other.
  • both fixing portions 96 of the first cover member 91 are positioned between the two column portions 26 of each battery holder 20.
  • the intermediate plate 51 is fixed to the first cover member 91 by screwing the screws S ⁇ b> 2 inserted through the through holes 56 of the intermediate plate 51 into the nuts 99 embedded in the fixing portion 96.
  • the screws inserted into the through holes 77 of the second end plate 62 are screwed into the nuts 97 embedded in the fixing portions 96 of the second cover member 92, so that the first The two end plates 62 are fixed to the second cover member 92.
  • the first cover member 91 is equipped with a monitoring ECU 101 that monitors the battery module 10 and shuts off the discharge when an abnormality occurs in the battery module 10 (or the battery cell 11). Is placed.
  • a columnar bus bar 102 is inserted into the through hole 95 of the first cover member 91.
  • the bus bar 102 is bent in an L shape.
  • the bus bar 102 is connected to the terminal 16 of the first battery cell 11 a and is inserted through the through hole 95 of the first cover member 91 and protrudes above the cover member 91.
  • the screw S3 penetrating the bus bar 102 is screwed into a nut 99 embedded in the fixing plate 98, whereby the bus bar 102 is fixed to the first cover member 91.
  • an electronic component 103 such as a current sensor or FET (electrolytic effect transistor) is placed.
  • FET electrolytic effect transistor
  • Each battery cell 11 is formed with a film on the surface of the electrode with use.
  • the elastic member 31 provided between the second end plate 62 and the second battery cell 11b elastically deforms and contracts when the battery cell 11 expands. As a result, the load applied to the end plates 61 and 62 as the battery cell 11 expands is absorbed. Specifically, when the battery cells 11 expand, the adjacent battery cells 11 are pressed against each other.
  • the intermediate plate 51 is pressed toward the elastic member 31 by the expansion of the adjacent battery cells 11 and moves toward the elastic member 31.
  • the elastic member 31 is elastically deformed by being pressed by the moving intermediate plate 51.
  • the elastic member 31 is restricted from moving in the thickness direction by the end plates 61 and 62 being constrained by the bolts 80 and nuts 85, and is elastically deformed in the thickness direction due to factors other than the expansion of the battery cell 11. Is suppressed.
  • the elastic member 31 is not restricted from moving in the direction orthogonal to the thickness direction, and the elastic member 31 may be elastically deformed in the direction orthogonal to the thickness direction when vibration or impact is applied. . If the elastic member 31 is in direct contact with the battery cell 11, the battery cell 11 may move following the elastic deformation of the elastic member 31 and the battery module 10 may be deformed.
  • the intermediate plate 51 When the intermediate plate 51 is provided between the elastic member 31 and the first battery cell 11a, when the elastic member 31 is elastically deformed in a direction orthogonal to the thickness direction, the intermediate plate 51 is moved in a direction orthogonal to the thickness direction.
  • the bolts 80 since the bolts 80 are inserted into the intermediate bolt holes 55 and 57 of the intermediate plate 51, the bolts 80 corresponding to the peripheral edges of the intermediate bolt holes 55 and 57 abut, and the bolts 80 function as support members. To do. Since the intermediate plate 51 is supported by the bolts 80, the intermediate plate 51 is suppressed from moving in the direction orthogonal to the thickness direction.
  • the bolts 80 are inserted into the first end plates 61, even if a load is applied to each bolt 80 from the intermediate plate 51, the movement of the bolts 80 is restricted by the first end plate 61. Therefore, the movement of the intermediate plate 51 is suppressed by restricting the movement of the bolt 80.
  • each positioning plate 70 is fixed with the two screws S1.
  • the diameters of the first bolt holes 66 and 67 of the first end plate 61 are larger than the minimum diameter necessary for inserting the cylindrical portion 83 of the bolt 80.
  • the position of the bolt 80 is shifted due to the dimensional tolerance of these components.
  • the diameters of the first bolt holes 66 and 67 of the first end plate 61 are made relatively large, so that the bolt 80 can move in the radial direction in the first bolt holes 66 and 67.
  • the bolt 80 moves in the first bolt holes 66 and 67 when the elastic member 31 is elastically deformed in a direction perpendicular to the thickness direction.
  • the intermediate plate 51 moves in a direction perpendicular to the thickness direction.
  • the bolt 80 inserted into the first bolt holes 66 and 67 is further inserted into the small hole 71, and the radial movement of the bolt 80 in the first bolt holes 66 and 67 is restricted by the small hole 71. .
  • each positioning plate 70 can be positioned with respect to the first end plate 61 according to the position of the corresponding bolt 80. For this reason, the positioning plate 70 can be fixed to the first end plate 61 in a state where the bolt 80 is inserted into the small hole 71 even if the position of the bolt 80 is shifted due to the dimensional tolerance of the constituent members of the battery module 10. .
  • the position of the bolt 80 with respect to the first end plate 61 is fixed by the small hole 71.
  • the intermediate plate 51 is fixed to the first cover member 91.
  • the battery cell 11 moves toward the elastic member 31.
  • the movement amount of the first battery cell 11 a adjacent to the elastic member 31 is the largest among the movement amounts of the plurality of battery cells 11, and stress is generated in the bus bar 102 fixed to the first cover member 91. Since the first cover member 91 moves integrally with the battery cell 11 by the movement of the intermediate plate 51 as the battery cell 11 moves in the arrangement direction, the occurrence of stress on the bus bar 102 is suppressed. .
  • An intermediate plate 51 is provided between the elastic member 31 and the first battery cell 11 a, and a load in a direction orthogonal to the arrangement direction of the battery cells 11 is applied to the battery cell 11 with the elastic deformation of the elastic member 31. I am trying not to.
  • the intermediate plate 51 is supported by the support member held by the first end plate 61, that is, the bolt 80, so that the intermediate plate 51 moves in a direction perpendicular to the arrangement direction of the battery cells 11 along with the elastic deformation of the elastic member 31. Is suppressed. For this reason, even if the elastic member 31 is elastically deformed in a direction orthogonal to the arrangement direction of the battery cells 11, the battery module 10 is not easily deformed. Therefore, the connection state between the battery cells 11 is maintained, and breakage of members constituting the battery module 10 is suppressed.
  • the intermediate plate 51 is supported by a bolt 80 that applies a restraining load to the first end plate 61 and the second end plate 62. For this reason, it is not necessary to separately provide a member for supporting the intermediate plate 51, and an increase in the number of parts is suppressed.
  • the first end plate 61 has a positioning plate 70.
  • the diameter of the small hole 71 of the positioning plate 70 is smaller than the diameter of the first bolt holes 66 and 67 of the first end plate 61. For this reason, even when the diameter of the first bolt holes 66 and 67 of the first end plate 61 is relatively large in consideration of the dimensional tolerance of the members constituting the battery module 10, the bolts 80 are formed by the small holes 71. Can be restricted.
  • the cylindrical portion 83 of the bolt 80 extends from the first end plate 61 to a position beyond the intermediate plate 51.
  • the elastic member 31 is elastically deformed in a direction orthogonal to the arrangement direction of the battery cells 11, a load is applied from the intermediate plate 51 to the bolt 80.
  • the rigidity of the cylindrical portion 83 is higher than the rigidity of the screw portion 84, so that a portion to which a load from the intermediate plate 51 is easily applied is formed as the cylindrical portion 83, thereby suppressing the breakage of the bolt 80. can do.
  • the diameter of the second bolt holes 76 and 78 of the second end plate 62 is smaller than the diameter of the cylindrical portion 83 of the bolt 80. For this reason, the bolt 80 cannot be inserted into the battery module 10 from the second end plate 62 toward the first end plate 61. Accordingly, the bolt 80 is prevented from being inserted from the wrong direction, and the bolt 80 is prevented from being arranged so that the screw portion 84 extends from the first end plate 61 to a position beyond the intermediate plate 51.
  • the battery cells 11 are bonded to each other. Therefore, the battery cells 11 are not easily displaced from each other, and deformation of the battery module 10 is suppressed.
  • the intermediate plate 51 is fixed to the first cover member 91. For this reason, when the plurality of battery cells 11 expand, the intermediate plate 51 can move integrally with the first cover member 91, and the stress on the bus bar 102 can be suppressed. Therefore, in addition to suppressing the deformation of the battery module 10 due to the elastic deformation of the elastic member 31 in the direction orthogonal to the arrangement direction of the battery cells 11, the deformation of the bus bar 102 can be suppressed.
  • the positioning plate 70 may not be fixed to the first end plate 61.
  • the diameter of the first bolt holes 66 and 67 of the first end plate 61 is made smaller than that of the above embodiment, and the distance that the bolt 80 can move in the first bolt holes 66 and 67 in the radial direction is reduced. Is preferred.
  • the bolt 80 may be arranged so that the screw portion 84 extends from the first end plate 61 to a position beyond the intermediate plate 51. In this case, it is preferable that the screw portion 84 has such a rigidity that the bolt 80 is not damaged by the load applied from the intermediate plate 51 to the bolt 80.
  • the diameters of the second bolt holes 76 and 78 of the second end plate 62 may be larger than the diameter of the cylindrical portion 83.
  • the diameter of the cylindrical portion 83 and the diameter of the screw portion 84 may be the same.
  • the bolt 80 can be inserted into the battery module 10 from the second end plate 62 toward the first end plate 61, when the cylindrical portion 83 is to be inserted into the first end plate 61, It is desirable to prevent the bolt 80 from being inserted from the wrong direction by other configurations.
  • the battery cell 11 may not be bonded to the heat transfer plate 41.
  • the heat transfer plate 41 may not be provided. In this case, the adjacent battery cells 11 are bonded together by the adhesive sheet 32.
  • the intermediate plate 51 may be supported by a support member different from the bolt 80 held by the first end plate 61.
  • a pin extending from the intermediate plate 51 toward the first end plate 61 may be fixed or held on the first end plate 61, and the intermediate plate 51 may be supported by pins held on the first end plate 61.
  • the intermediate plate 51 may not be connected to the first cover member 91.
  • the battery cell 11 may not be held by the battery holder 20.
  • the intermediate plate 51 and the elastic member 31 are not only provided between the first end plate 61 and the first battery cell 11a, but further provided between the second end plate 62 and the second battery cell 11b. Also good. In this case, the deformation of the battery module 10 can be suppressed by supporting the intermediate plate 51 provided between the second end plate 62 and the second battery cell 11b with the bolts 80.
  • the elastic member 31 may be a spring or the like.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un module de batterie qui comprend une pluralité d'éléments de batterie, une première et une seconde plaque d'extrémité, une plaque intermédiaire, un élément élastique et un élément de support. Les éléments de batterie sont agencés sur une rangée. Les première et seconde plaques d'extrémité prennent en sandwich la pluralité d'éléments de batterie à partir des deux côtés dans leur direction d'agencement. La plaque intermédiaire est disposée entre la première plaque d'extrémité et l'élément de batterie qui est adjacent à ladite première plaque d'extrémité et est constituée de sorte à se déplacer dans la direction d'agencement conjointement avec le gonflement de la pluralité d'éléments de batterie. L'élément élastique est agencé entre la plaque intermédiaire et la première plaque d'extrémité et constitué de telle manière à se déformer élastiquement lorsqu'il est pressé en raison du mouvement de la plaque intermédiaire accompagnant le gonflement des éléments de batterie. L'élément de support est retenu par la première plaque d'extrémité et supporte la plaque intermédiaire depuis une direction orthogonale à la direction d'agencement.
PCT/JP2015/062078 2014-05-07 2015-04-21 Module de batterie WO2015170581A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2014095975A JP6252776B2 (ja) 2014-05-07 2014-05-07 電池モジュール
JP2014-095975 2014-05-07
JP2014-172852 2014-08-27
JP2014172852A JP6421497B2 (ja) 2014-08-27 2014-08-27 電池モジュール

Publications (1)

Publication Number Publication Date
WO2015170581A1 true WO2015170581A1 (fr) 2015-11-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/062078 WO2015170581A1 (fr) 2014-05-07 2015-04-21 Module de batterie

Country Status (1)

Country Link
WO (1) WO2015170581A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3168899A1 (fr) * 2015-11-16 2017-05-17 Samsung SDI Co., Ltd. Module de batterie rechargeable
US9972870B2 (en) 2014-08-27 2018-05-15 Kabushiki Kaisha Toyota Jidoshokki Battery module
WO2024098248A1 (fr) * 2022-11-08 2024-05-16 厦门新能达科技有限公司 Appareil électrochimique et dispositif électrique

Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2012160347A (ja) * 2011-01-31 2012-08-23 Sanyo Electric Co Ltd 電源装置及び電源装置を備える車両
WO2012131837A1 (fr) * 2011-03-25 2012-10-04 日立ビークルエナジー株式会社 Bloc de batterie et dispositif d'alimentation électrique
JP2013084444A (ja) * 2011-10-08 2013-05-09 Sanyo Electric Co Ltd 電源装置及びこの電源装置を備える車両
JP2013235728A (ja) * 2012-05-09 2013-11-21 Honda Motor Co Ltd バッテリモジュール

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012160347A (ja) * 2011-01-31 2012-08-23 Sanyo Electric Co Ltd 電源装置及び電源装置を備える車両
WO2012131837A1 (fr) * 2011-03-25 2012-10-04 日立ビークルエナジー株式会社 Bloc de batterie et dispositif d'alimentation électrique
JP2013084444A (ja) * 2011-10-08 2013-05-09 Sanyo Electric Co Ltd 電源装置及びこの電源装置を備える車両
JP2013235728A (ja) * 2012-05-09 2013-11-21 Honda Motor Co Ltd バッテリモジュール

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9972870B2 (en) 2014-08-27 2018-05-15 Kabushiki Kaisha Toyota Jidoshokki Battery module
DE112015003893B4 (de) 2014-08-27 2022-03-31 Kabushiki Kaisha Toyota Jidoshokki Batteriemodul
EP3168899A1 (fr) * 2015-11-16 2017-05-17 Samsung SDI Co., Ltd. Module de batterie rechargeable
CN106711366A (zh) * 2015-11-16 2017-05-24 三星Sdi株式会社 可再充电电池模块
US9985257B2 (en) 2015-11-16 2018-05-29 Samsung Sdi Co., Ltd. Rechargeable battery module
CN106711366B (zh) * 2015-11-16 2021-04-30 三星Sdi株式会社 可再充电电池模块
WO2024098248A1 (fr) * 2022-11-08 2024-05-16 厦门新能达科技有限公司 Appareil électrochimique et dispositif électrique

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