WO2020121802A1 - Storage battery module - Google Patents

Storage battery module Download PDF

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Publication number
WO2020121802A1
WO2020121802A1 PCT/JP2019/046101 JP2019046101W WO2020121802A1 WO 2020121802 A1 WO2020121802 A1 WO 2020121802A1 JP 2019046101 W JP2019046101 W JP 2019046101W WO 2020121802 A1 WO2020121802 A1 WO 2020121802A1
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WO
WIPO (PCT)
Prior art keywords
storage battery
space
electrode
assembly
exhaust port
Prior art date
Application number
PCT/JP2019/046101
Other languages
French (fr)
Japanese (ja)
Inventor
遠矢　正一
慶三 西川
一男 石本
泰輝 向
澤海 董
Original Assignee
パナソニックＩｐマネジメント株式会社
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 JP2019045193A external-priority patent/JP7270135B2/en
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2020121802A1 publication Critical patent/WO2020121802A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to a storage battery module, and particularly to a storage battery module that houses a plurality of storage battery cells.
  • the storage battery module contains a plurality of storage battery cells. When a short circuit occurs in a storage battery cell, high temperature and high pressure gas is generated from the storage battery cell. In order to discharge this gas to the outside of the storage battery module, the storage battery module is provided with an exhaust path portion that is partitioned from a plurality of storage battery cells, and the exhaust path is connected to an exhaust port (see, for example, Patent Document 1). ).
  • the inflow amount of air (oxygen) is large, the combustion temperature inside the battery module becomes high, and not only the battery that has runaway due to heat but also its adjacent battery may run out of heat (burn out).
  • the present disclosure has been made in view of such circumstances, and an object thereof is to provide a technique for suppressing thermal runaway (kindling) of an adjacent battery due to high temperature combustion of the thermal runaway battery.
  • a storage battery cell having a first electrode and a second electrode facing each other is a plurality of storage batteries having the first electrode directed in the same direction.
  • the storage battery assembly to be arranged, a first surface facing the plurality of first electrodes in the storage battery assembly, a second surface facing the plurality of second electrodes in the storage battery assembly, a first surface and a second surface.
  • a structure including a third surface and a fourth surface that face each other and face each other across the storage battery assembly.
  • a space surrounded by a plurality of first electrode-side surfaces, a first surface, a third surface, and a fourth surface of the storage battery assembly is formed in the structure, and the structure is a storage battery assembly in the space.
  • the exhaust port is provided on the third surface.
  • One space has one exhaust port.
  • thermal runaway (similar burning) of an adjacent battery due to high temperature combustion of the thermal runaway battery can be suppressed.
  • FIGS. 6A and 6B are diagrams showing an outline of gas discharge in the storage battery module of FIG.
  • the present embodiment relates to a storage battery module that stores a plurality of storage battery cells.
  • Each of the storage battery cells has a structure in which the positive electrode and the negative electrode face each other, and for example, the positive electrodes are arranged so that the positive electrodes face the same direction.
  • gas is generated in the storage battery cell when an internal short circuit or the like occurs.
  • the safety mechanism releases the gas from the positive electrode side to the outside of the storage battery cell.
  • Such gas has a high temperature and high pressure, and when combustion by the gas occurs, other storage battery cells in the storage battery module also undergo thermal runaway (kindling). Due to this burning, the entire storage battery module or the entire product may burn.
  • a space is provided between the structure of the storage battery and the positive electrode side surface of the plurality of storage battery cells, and the space is connected to the exhaust port. The high temperature gas from the storage battery cell is discharged into the space and is discharged to the outside of the storage battery module through the exhaust port.
  • one exhaust port is connected to one space. Therefore, when one space is formed in the structure, one exhaust port is provided in the structure.
  • FIG. 1 is a perspective view showing the structure of the storage battery module 1000.
  • an orthogonal coordinate system including an x axis, ay axis, and az axis is defined.
  • the x axis and the y axis are orthogonal to each other in the bottom surface of the storage battery module 1000.
  • the z-axis is perpendicular to the x-axis and the y-axis and extends in the height (vertical) direction of the storage battery module 1000.
  • the positive directions of the x-axis, the y-axis, and the z-axis are defined in the directions of the arrows in FIG. 1, and the negative directions are defined in the directions opposite to the arrows.
  • the positive side of the x-axis is the "front side” or “front side”
  • the negative side of the x-axis is the “rear side” or “rear side”
  • the positive side of the z-axis is "upper side” or “top side”.
  • the negative side of the z-axis may be referred to as the “lower side” or the “bottom side”.
  • the positive side in the y-axis direction may be referred to as “right side”
  • the negative side in the y-axis may be referred to as “left side”.
  • the structure 100 includes a front housing 110, a rear housing 130, and a right lid 352.
  • the front housing 110 includes a front surface 112, a front lower surface 114, a front upper surface 116, a first front exhaust opening 118a to a fourth front exhaust opening 118d collectively referred to as a front exhaust opening 118, and a left side surface 150.
  • the rear housing 130 includes a rear surface 132, a rear lower surface 134, a rear upper surface 136, and a right side surface 152.
  • the respective components of the front housing 110 and the rear housing 130 are connected by screws, welding, an adhesive material, etc., but a publicly known technique may be used, and the description thereof will be omitted here.
  • the front surface 112 of the front housing 110 has a rectangular plate shape extending on the yz plane.
  • the front lower surface 114 extends rearward from the lower end of the front surface 112, the front upper surface 116 extends rearward from the upper end of the front surface 112, and the left side surface 150 extends rearward from the left end of the front surface 112. Extend.
  • Each of the front lower surface 114, the front upper surface 116, and the left side surface 150 has a plate shape.
  • the plate shape may be rectangular.
  • the rear surface 132 of the rear housing 130 has a rectangular plate shape that spreads on the yz plane.
  • the rear lower surface 134 extends from the lower end of the rear surface 132 toward the front side
  • the rear upper surface 136 extends from the upper end of the rear surface 132 toward the front side
  • the right side surface 152 extends from the right end of the rear surface 132 toward the front side. ..
  • Each of the rear lower surface 134, the rear upper surface 136, and the right side surface 152 has a plate shape.
  • the plate shape may be rectangular.
  • the front lower surface 114 and the front end of the rear lower surface 134 form one lower surface.
  • the front upper surface 116 and the rear upper surface 136 form one upper surface.
  • the lower surface and the upper surface intersect the front surface 112 and the rear surface 132.
  • the front surface 112 may be referred to as a first surface
  • the rear surface 132 may be referred to as a second surface
  • the lower surface may be referred to as a third surface
  • the upper surface may be referred to as a fourth surface.
  • the front housing 110 and the rear housing 130 are formed of a material having high thermal conductivity, such as metal or carbon. Therefore, the front surface 112, the front lower surface 114, the front upper surface 116, the rear surface 132, the rear lower surface 134, and the rear upper surface 136 are, for example, metal plates.
  • FIG. 2 is an exploded perspective view showing the structure of the storage battery module 1000.
  • FIG. 3 is another exploded perspective view showing the structure of the storage battery module 1000, which is a further exploded structure of FIG. 2.
  • FIG. 4 is a cross-sectional view showing the structure of the storage battery module 1000, which is a cross-sectional view taken along the line AA′ in FIG. 1.
  • FIG. 5 is another cross-sectional view showing the structure of the storage battery module 1000, which is a cross-sectional view taken along the line B-B′ of FIG. 1.
  • a combination of the front case 240 and the rear case 250 is housed between the front case 110 and the rear case 130.
  • the combination of the front case 240 and the rear case 250 has a hollow box shape and is made of an insulating material such as resin.
  • the rear end of the front case 240 and the front end of the rear case 250 are connected, the front case 240 faces the front housing 110, and the rear case 250 faces the rear housing 130. ..
  • the first storage battery assembly 200a to the seventh storage battery assembly 200g which are collectively referred to as the storage battery assembly 200, are housed.
  • the first storage battery assembly 200a, the second storage battery assembly 200b,..., The sixth storage battery assembly 200f, and the seventh storage battery assembly 200g are arranged in order from the left side to the right side. Therefore, it can be said that the lower surface and the upper surface face each other with the storage battery assembly 200 interposed therebetween.
  • a plurality of storage battery cells 210 is arranged in each storage battery assembly 200.
  • the storage battery cell 210 is, for example, a cylindrical lithium-ion secondary battery.
  • a positive electrode 212 and a negative electrode 214 facing each other are arranged at both ends of the columnar shape of the storage battery cell 210.
  • a publicly known technique may be used for the storage battery cell 210, and a safety mechanism for discharging the high-temperature high-pressure gas to the outside when the internal pressure rises due to an internal short circuit or the like is provided. Generally, the high temperature and high pressure gas is discharged from the positive electrode 212 side.
  • the plurality of storage battery cells 210 included in each of the first storage battery assembly 200a, the third storage battery assembly 200c, the fifth storage battery assembly 200e, and the seventh storage battery assembly 200g have the positive electrode 212 facing forward, The negative electrode 214 faces the rear side.
  • the positive electrode 212 faces the rear side and the negative electrode 214 faces the front side. That is, the direction of the positive electrode 212 is the same in one storage battery assembly 200, but the direction of the positive electrode 212 is opposite between two adjacent storage battery assemblies 200.
  • the first storage battery assembly 200a or the like has the first electrode.
  • the electrode is the positive electrode 212 and the second electrode is the negative electrode 214.
  • the first electrode is the negative electrode 214 and the second electrode is the positive electrode 212.
  • the battery holder 230 has a through hole into which each of the plurality of storage battery cells 210 can be inserted, thereby fixing the respective positions of the plurality of storage battery cells 210.
  • the battery holder 230 is made of an insulating material such as resin.
  • a front case 240 is attached to the front side of the plurality of storage battery cells 210 fixed by the battery holder 230, and a rear case 250 is attached to the rear side of the plurality of storage battery cells 210 fixed by the battery holder 230.
  • the front case 240 has a plate-shaped front case plate portion 244 that spreads in the yz plane, and the front case plate portion 244 is provided with a through hole at a position facing the positive electrode 212 of each storage battery cell 210. Further, a first front partition wall 242a is provided on the front surface of the front case plate portion 244 at the position of the boundary between the second storage battery assembly 200b and the third storage battery assembly 200c. Further, a second front partition wall 242b is provided at the position of the boundary between the fourth storage battery assembly 200d and the fifth storage battery assembly 200e, and the position of the boundary between the sixth storage battery assembly 200f and the seventh storage battery assembly 200g. Is provided with a third front partition 242c. The first front partition 242a to the third front partition 242c are collectively referred to as a front partition 242, and the front partition 242 projects toward the front and extends in the vertical direction.
  • the front surface of the front case plate 244 is divided into the first front recess 246a to the fourth front recess 246d by the first front partition 242a to the third front partition 242c.
  • the second front recess 246b is arranged at a portion sandwiched between the first front partition 242a and the second front partition 242b, that is, at a position facing the third storage battery assembly 200c and the fourth storage battery assembly 200d.
  • the first front recess 246a and the third front recess 246c are similar to the second front recess 246b.
  • the fourth front recess 246d is arranged at a position facing only the seventh storage battery assembly 200g, and thus is narrower than the first front recess 246a to the third front recess 246c.
  • the first front recess 246a to the fourth front recess 246d are collectively referred to as the front recess 246.
  • the first front lead plate 300a is fitted in the first front recess 246a
  • the second front lead plate 300b is fitted in the second front recess 246b
  • the third front lead plate 300c is fitted in the third front recess 246c
  • the fourth front lead plate 300d is fitted in the fourth front recess 246d.
  • the first front lead plate 300a to the fourth front lead plate 300d are collectively referred to as the front lead plate 300, and the front lead plate 300 has a plate shape.
  • the first front lead plate 300a is connected to the positive electrodes 212 of the plurality of storage battery cells 210 of the first storage battery assembly 200a and the negative electrodes 214 of the plurality of storage battery cells 210 of the second storage battery assembly 200b.
  • the first front lead plate 300a is provided with a wiring pattern for electrically connecting one positive electrode 212 and one negative electrode 214, one storage battery cell 210 of the first storage battery assembly 200a and a second storage battery cell
  • One storage battery cell 210 of the storage battery assembly 200b is connected in series.
  • a through hole is provided in a portion of the first front lead plate 300a connected to the positive electrode 212.
  • the second front lead plate 300b and the third front lead plate 300c are similar to the first front lead plate 300a.
  • the fourth front lead plate 300d is connected only to the positive electrodes 212 of the plurality of storage battery cells 210 of the seventh storage battery assembly 200g. Therefore, the fourth front lead plate 300d is smaller than the first front lead plate 300a to the third front lead plate 300c.
  • the rear case 250 has a plate-shaped rear case plate portion 254 that spreads in the yz plane, and the rear case plate portion 254 is provided with a through hole at a position facing the positive electrode 212 of each storage battery cell 210. Be done. Further, as shown in FIG. 5, on the rear surface of the rear case plate portion 254, the first rear partition wall 252a is provided at the boundary position between the first storage battery assembly 200a and the second storage battery assembly 200b. Is provided. In addition, a second rear partition 252b is provided at a boundary position between the third storage battery assembly 200c and the fourth storage battery assembly 200d, and a boundary between the fifth storage battery assembly 200e and the sixth storage battery assembly 200f is provided. A third rear partition 252c is provided at the position. The first rear partition 252a to the third rear partition 252c are collectively referred to as a rear partition 252, and the rear partition 252 projects rearward and extends in the up-down direction.
  • the rear surface of the rear case plate 254 is divided into the first rear recess 256a to the fourth rear recess 256d by the first rear partition 252a to the third rear partition 252c.
  • the second rear recess 256b is disposed at a portion sandwiched between the first rear partition 252a and the second rear partition 252b, that is, at a position facing the second storage battery assembly 200b and the third storage battery assembly 200c.
  • the third rear concave portion 256c and the fourth rear concave portion 256d are similar to the second rear concave portion 256b.
  • the first rear recess 256a is arranged at a position facing only the first storage battery assembly 200a, and thus is narrower than the second rear recess 256b to the fourth rear recess 256d.
  • the first rear concave portion 256a to the fourth rear concave portion 256d are collectively referred to as the rear concave portion 256.
  • the first rear lead plate 302a is fitted in the first rear recess 256a, and the second rear lead plate 302b is fitted in the second rear recess 256b.
  • the third rear lead plate 302c is fitted in the third rear recess 256c, and the fourth rear lead plate 302d is fitted in the fourth rear recess 256d.
  • the first rear lead plate 302a to the fourth rear lead plate 302d are collectively referred to as the rear lead plate 302, and the rear lead plate 302 has a plate shape.
  • the second rear lead plate 302b is connected to the positive electrodes 212 of the plurality of storage battery cells 210 of the second storage battery assembly 200b and the negative electrodes 214 of the plurality of storage battery cells 210 of the third storage battery assembly 200c. Since the second rear side lead plate 302b is provided with a wiring pattern for electrically connecting one positive electrode 212 and one negative electrode 214, one storage battery cell 210 of the second storage battery assembly 200b, One storage battery cell 210 of the three storage battery assembly 200c is connected in series. Here, a through hole is provided in a portion of the second rear lead plate 302b that is connected to the positive electrode 212.
  • the third rear lead plate 302c and the fourth rear lead plate 302d are similar to the second rear lead plate 302b.
  • the first rear lead plate 302a is connected only to the negative electrodes 214 of the plurality of storage battery cells 210 of the first storage battery assembly 200a. Therefore, the first rear lead plate 302a is smaller than the second rear lead plate 302b to the fourth rear lead plate 302d. With such a front lead plate 300 and a rear lead plate 302, one storage battery cell 210 included in each of the first storage battery assembly 200a to the seventh storage battery assembly 200g is connected in series.
  • a control board tray 330 is attached to the upper side of the front case 240 and the rear case 250 that are combined while accommodating the storage battery assembly 200.
  • the control board tray 330 is a plate-shaped tray extending in the left-right direction.
  • a control board 332 is arranged on the control board tray 330.
  • the control board 332 includes an IC (Integrated Circuit) and the like, and controls the operation of the storage battery module 1000.
  • the control board 332 has a plate shape extending in the left-right direction similarly to the control board tray 330, but is smaller than the control board tray 330.
  • a control board lid 334 is attached so as to cover the upper side of the control board tray 330 on which the control board 332 is arranged.
  • the control board lid 334 is a lid for protecting the control board 332, and has a shape that matches the control board tray 330.
  • the left side lid 350 is attached to the left side of the front case 240 and the rear case 250, which are combined while accommodating the storage battery assembly 200, and the right side lid 352 is attached to the right side.
  • the left lid 350 and the right lid 352 have a plate shape extending in the vertical direction and protect the combination of the front case 240 and the rear case 250 from the side surface.
  • the control board tray 330, the control board lid 334, the left side lid 350, and the right side lid 352 are formed of an insulating material such as resin.
  • the combination of the front case 240 and the rear case 250 to which the control board tray 330 is attached with the control board lid 334, the left side lid 350, and the right side lid 352 is the same as described above.
  • the rear housing 130 As a result, as shown in FIG. 4, a front space 400 (third front space 400c) surrounded by the front surface 112, the front lower surface 114, the front upper surface 116, and the front lead plate 300 (third front lead plate 300c) is formed.
  • the 3rd front side lead plate 300c is equivalent to the surface by the side of the some 1st electrode in 5th storage battery assembly 200e and 6th storage battery assembly 200f.
  • a portion of the front surface 112 located on the lower surface side of the storage battery cells 210 at the lower surface side ends of the fifth storage battery assembly 200e and the sixth storage battery assembly 200f, or the front lower surface 114 has a third surface.
  • a front exhaust port 118c is provided.
  • the third front exhaust port 118c is a through hole formed in a portion of the front surface 112 or the front lower surface 114, and can be said to be an opening.
  • a rear space 410 (third rear space 410c) surrounded by the rear surface 132, the rear lower surface 134, the rear upper surface 136, and the rear lead plate 302 (third rear lead plate 302c) is formed.
  • the third rear lead plate 302c corresponds to a surface of the fourth storage battery assembly 200d and the fifth storage battery assembly 200e on the side of the plurality of second electrodes.
  • the portion of the rear surface 132 located on the lower surface side of the storage battery cells 210 at the lower surface side end of the fourth storage battery assembly 200d and the fifth storage battery assembly 200e, or the rear lower surface 134, 2 rear exhaust port 138b (FIG. 2) is provided in the third rear space 410c.
  • the second rear exhaust port 138b is a through hole formed in the rear surface 132 or the rear lower surface 134.
  • the front space 400 and the rear space 410 will be described in more detail with reference to FIG. 5.
  • the first front partition wall 242a to the third front partition wall 242c form the first front space 400a to the fourth front space 400d. Is divided into Therefore, it can be said that the front partition walls 242 partition the adjacent front spaces 400.
  • the first front space 400a to the fourth front space 400d are arranged side by side in the left-right direction.
  • the first front space 400a to the third front space 400c are arranged facing the two storage battery assemblies 200, but the fourth front space 400d is arranged corresponding to only one storage battery assembly 200. Therefore, the volume of the fourth front space 400d is smaller than the volume of each of the first front space 400a to the third front space 400c.
  • one front exhaust port 118 is provided in the lower part of each front space 400. Therefore, one front space 400 has one front exhaust port 118.
  • the rear space 410 is divided from the first rear space 410a to the fourth rear space 410d by the first rear partition 252a to the third rear partition 252c. Therefore, it can be said that the rear partition wall 252 partitions the adjacent rear space 410.
  • the first rear space 410a to the fourth rear space 410d are arranged side by side in the left-right direction.
  • the second rear space 410b to the fourth rear space 410d are arranged facing the two storage battery assemblies 200, but the first rear space 410a is arranged corresponding to only one storage battery assembly 200. Therefore, the volume of the first rear space 410a is smaller than the volume of each of the second rear space 410b to the fourth rear space 410d.
  • one rear exhaust port 138 is provided in the lower portion of each of the second rear space 410b to the fourth rear space 410d.
  • FIGS. 6A and 6B show an outline of the discharge of the gas 500 in the storage battery module 1000.
  • FIG. 6A is a cross-sectional view schematically showing the structure of the storage battery module 1000, and is a cross-sectional view in the same direction as FIG. 4.
  • the first storage battery cells 210a to the eighth storage battery cells 210h are arranged from the lower side to the upper side.
  • the front space 400 is arranged on the front side of these storage battery cells 210, and the front exhaust port 118 is provided on the front lower surface 114 in contact with the front space 400.
  • the third storage battery cell 210c releases the high-temperature and high-pressure gas 500 from the positive electrode 212 side to the front space 400 via the front case 240 and the front lead plate 300.
  • the gas 500 released into the front space 400 contacts the front surface 112. Since the front surface 112 is a metal plate, it absorbs heat from the gas 500 with which it comes into contact and radiates heat to the outside of the storage battery module 1000. As described above, the gas 500 is deprived of heat and cooled by the contact with the front surface 112. Further, since the cooled gas 500 is diffused in the front space 400, the pressure of the gas 500 decreases. Further, the gas 500 whose temperature and pressure have dropped is discharged to the outside of the storage battery module 1000 from the front exhaust port 118 provided below the front space 400.
  • the volume of the fourth front space 400d is smaller than the volume of each of the first front space 400a to the third front space 400c. Therefore, the pressure in the fourth front space 400d is likely to be higher than the other pressures due to the gas 500 released from the storage battery cell 210. As a result, the third front partition 242c forming the fourth front space 400d is more easily damaged than the other front partition 242.
  • the size of the fourth front exhaust port 118d provided in the fourth front space 400d is made larger than that of the other front exhaust ports 118. This suppresses an increase in pressure in the fourth front space 400d. That is, the smaller the size of the front space 400, the larger the area of the front exhaust port 118.
  • the front exhaust port 118 is provided on the front upper surface 116, air may flow from the lower portion of the front space 400 that is not completely sealed. Since the inflowing air is discharged from the front exhaust port 118, a flow of air from the lower side to the upper side is generated in the front space 400. Such a flow of air supplies air to the sparks, so that high temperature combustion easily occurs. In the rear space 410 as well, as in the front space 400, the gas 500 is cooled, diffused, and released.
  • 6B is a cross-sectional view schematically showing the structure of a storage battery module 2000 that is a comparison target of the storage battery module 1000 of FIG. 6A, and is a cross-sectional view in the same direction as FIG. 6A.
  • 6A front surface 112 to front upper surface 116, rear surface 132 to rear upper surface 136, storage battery assembly 200 to negative electrode 214, front case 240, rear case 250, front lead plate 300, rear lead plate 302. ,
  • the front exhaust port 2118 is provided in a portion of the front surface 2112 that is in contact with the front space 400 and that faces the positive electrode 2212 of the first storage battery cell 2210a.
  • the first storage battery cell 2210a discharges the high temperature and high pressure gas 2500 from the positive electrode 2212 side to the front space 2400 via the front case 2240 and the front lead plate 2300.
  • the gas 2500 released to the front space 2400 is released to the outside of the storage battery module 2000 from the front exhaust port 2118. That is, the gas 2500 is not cooled by contact with the front surface 2112. At that time, if a spark is generated, air is supplied to the spark, so that high temperature combustion is likely to occur.
  • the gas 500 released from the storage battery cell 210 can be released to the outside from the exhaust port. Further, since the gas 500 in one space is discharged to the outside from one exhaust port, the gas 500 can be sufficiently discharged. Further, since the gas 500 is sufficiently released, it is possible to suppress the occurrence of high temperature combustion. Further, since the gas 500 in one space is discharged to the outside from one exhaust port, the inflow of air into the space can be suppressed. Moreover, since the inflow of air into the space is suppressed, the occurrence of high temperature combustion can be suppressed.
  • the positive electrodes 212 have the same direction in different assemblies, a plurality of storage battery cells 210 facing the same direction can be classified into a plurality of assemblies. Further, since the space is divided into the first space and the second space, when the space is large, the small first space and second space can be formed. Further, since one exhaust port is provided for each of the small first space and second space, the gas 500 can be sufficiently discharged. Further, since one exhaust port is provided for each of the small first space and the second space, it is possible to suppress the inflow of air into the first space and the second space. Further, since the front surface 112 is a metal plate, the gas 500 can be cooled.
  • the directions of the positive electrodes 212 in the different assemblies are opposite, a plurality of assemblies can be formed according to the directions of the plurality of storage battery cells 210.
  • the space is divided into the first space and the second space, the first space and the second space can be formed on the opposite sides of the storage battery assembly 200.
  • one exhaust port is provided for each of the first space and the second space, the gas 500 can be sufficiently discharged.
  • one exhaust port is provided for each of the first space and the second space, it is possible to suppress the inflow of air into the first space and the second space.
  • the front surface 112 and the rear surface 132 are metal plates, the gas 500 can be cooled.
  • a storage battery module 1000 is a storage battery assembly in which a plurality of storage battery cells 210 each having a first electrode and a second electrode facing each other are arranged with the first electrodes facing the same direction. 200, a first surface of the storage battery assembly 200 that faces the plurality of first electrodes, a second surface of the storage battery assembly 200 that faces the plurality of second electrodes, and a first surface and a second surface.
  • the structure 100 includes a third surface and a fourth surface that are opposed to each other with the storage battery assembly 200 sandwiched therebetween.
  • a space surrounded by a plurality of surfaces of the storage battery assembly 200 on the side of the first electrode, the first surface, the third surface, and the fourth surface is formed.
  • An exhaust port is provided on a portion of the first surface of the storage battery assembly 200 that is located on the third surface side of the end of the third surface on the third surface side, or on the third surface.
  • One space has one exhaust port.
  • a first assembly including a plurality of storage battery cells 210 in which the first electrode is the positive electrode 212 and the second electrode is the negative electrode 214, the first electrode is the positive electrode 212, and
  • the second assembly includes a plurality of storage battery cells 210 in which the second electrode is the negative electrode 214.
  • the space formed in the structure 100 includes a first space surrounded by a plurality of first electrode-side surfaces of the first assembly, a first surface, a third surface, and a fourth surface, and a space in the second assembly. It may include a second space surrounded by a plurality of first electrode-side surfaces, a first surface, a third surface, and a fourth surface.
  • the exhaust port is a portion of the first surface located on the third surface side of the end of the first assembly on the third surface side of the first assembly in the first space, or the first exhaust gas disposed on the third surface. Mouth, and a second exhaust port arranged on the third surface of the second space on the third surface side of the end of the second assembly closer to the third surface than the storage battery cell 210. May include and.
  • the storage battery module 1000 further includes a partition wall that partitions the first space and the second space.
  • the first space may have one first exhaust port.
  • the second space has one second exhaust port.
  • the first surface is a metal plate.
  • the storage battery assembly 200 includes a first assembly including a plurality of storage battery cells 210 in which the first electrode is the positive electrode 212 and the second electrode is the negative electrode 214, and the first electrode is the negative electrode 214, and The second electrode includes a plurality of storage battery cells 210 each having a positive electrode 212.
  • the structure body 100 includes a first space surrounded by a plurality of first electrode-side surfaces of the first assembly, a first surface, a third surface, and a fourth surface, and a plurality of second spaces in the second assembly.
  • a second space surrounded by the electrode-side surface, the second surface, the third surface, and the fourth surface is formed, and the structure 100 is the third surface-side end of the first aggregate in the first space.
  • the first surface located on the third surface side of the storage battery cell 210 or the third exhaust surface is provided with the first exhaust port, and the storage battery cell at the third surface side end of the second assembly in the second space.
  • a second exhaust port is provided on a portion of the second surface located closer to the third surface than 210, or on the third surface.
  • the first space may have one first exhaust port.
  • the second space has one second exhaust port.
  • First and second sides are metal plates.
  • the exhaust port consists of one opening.
  • the exhaust port consists of multiple openings.
  • a front space 400 and a rear space 410 are formed.
  • only one of the front space 400 and the rear space 410 may be formed.
  • a space suitable for arrangement can be formed.
  • a plurality of front spaces 400 are arranged.
  • the number of the front spaces 400 is not limited to this, and may be one, for example.
  • the structure can be simplified when the size of the front space 400 is small. The same applies to the rear space 410.
  • the front partition 242 and the rear partition 252 are made of resin or the like.
  • the invention is not limited to this, and for example, the front partition wall 242 and the rear partition wall 252 formed of resin or the like may be reinforced by a metal plate or the like from the front space 400 or the rear space 410 side. According to the present modification, even if the pressure of the generated gas 500 increases, the front partition 242 and the rear partition 252 can be less likely to be damaged.
  • the exhaust port is composed of one opening.
  • the exhaust port may be configured by a plurality of openings.
  • the openings are arranged adjacent to each other so that when the gas is discharged from one opening, the gas does not flow from the other opening. According to this modification, the degree of freedom of structure can be improved.
  • thermal runaway (similar burning) of an adjacent battery due to high temperature combustion of the thermal runaway battery can be suppressed.
  • 100 structure 110 front housing, 112 front surface (first surface), 114 front lower surface (third surface), 116 front upper surface (fourth surface), 118 front exhaust port (exhaust port), 130 rear housing, 132 rear surface (second surface), 134 rear lower surface (third surface), 136 rear upper surface (fourth surface), 138 rear exhaust port (exhaust port), 150 left side surface, 152 right side surface, 200 storage battery assembly (First aggregate, second aggregate)), 210 storage battery cell, 212 positive electrode (first electrode, second electrode), 214 negative electrode (first electrode, second electrode), 230 battery holder, 240 Front case, 242 front partition, 244 front case plate, 246 front recess, 250 rear case, 252 rear partition, 254 rear case plate, 256 rear recess, 300 front lead plate, 302 rear lead plate, 330 control board tray, 332 control board, 334 control board lid, 350 left side lid, 352 right side lid, 400 front space, 410 rear space, 1000 storage battery module.

Abstract

A front-side casing body 110 comprises a front surface 112, a front-side lower surface 114, and a front-side upper surface 116 facing a plurality of positive electrodes 212 in a fifth storage battery aggregate 200e. Third front spaces 400c are formed in the front-side casing body 110, said spaces being surrounded by the surfaces of the plurality of positive electrodes 212 in the fifth storage battery aggregate 200e, the front surface 112, the front-side lower surface 114, and the front-side upper surface 116. The front-side casing body 110 comprises third front-side exhaust ports 118c in either the front surface 112 portion, which is positioned further toward the front-side lower surface 114 side than a storage battery cell 210 at the front-side lower surface 114-side end, in the fifth storage battery aggregate 200e from among the third front spaces 400c, or in the front-side lower surface 114. One of the third front spaces 400c comprises one of the third front-side exhaust ports 118c.

Description

蓄電池モジュールStorage battery module
　本開示は、蓄電池モジュールに関し、特に複数の蓄電池セルを収納する蓄電池モジュールに関する。 The present disclosure relates to a storage battery module, and particularly to a storage battery module that houses a plurality of storage battery cells.
　蓄電池モジュールには、複数の蓄電池セルが収納される。蓄電池セルに短絡が生じると、高温かつ高圧のガスが蓄電池セルから発生する。このガスを蓄電池モジュールの外に排出するために、蓄電池モジュールには、複数の蓄電池セルとは区画された排気経路部が設けられ、排気経路は排気口に接続される（例えば、特許文献１参照）。 The storage battery module contains a plurality of storage battery cells. When a short circuit occurs in a storage battery cell, high temperature and high pressure gas is generated from the storage battery cell. In order to discharge this gas to the outside of the storage battery module, the storage battery module is provided with an exhaust path portion that is partitioned from a plurality of storage battery cells, and the exhaust path is connected to an exhaust port (see, for example, Patent Document 1). ).
国際公開第１１／０９２７７３号International Publication No. 11/092773
　排気口の断面積が小さければ空気（酸素）流入量が少なくなり、大きければ増える。空気（酸素）の流入量が多いと電池モジュール内部での燃焼温度が高くなり、熱暴走した電池だけでなく、その隣接電池も熱暴走（類焼）してしまう可能性が高くなる。 　The smaller the cross-sectional area of the exhaust port, the smaller the amount of air (oxygen) inflow, and the larger it will increase. When the inflow amount of air (oxygen) is large, the combustion temperature inside the battery module becomes high, and not only the battery that has runaway due to heat but also its adjacent battery may run out of heat (burn out).
　本開示はこうした状況に鑑みなされたものであり、その目的は、熱暴走電池の高温燃焼による隣接電池の熱暴走（類焼）を抑制する技術を提供することにある。 The present disclosure has been made in view of such circumstances, and an object thereof is to provide a technique for suppressing thermal runaway (kindling) of an adjacent battery due to high temperature combustion of the thermal runaway battery.
　上記課題を解決するために、本開示のある態様の蓄電池モジュールは、互いに反対を向いた第１の電極と第２の電極とを有する蓄電池セルが、第１の電極を同一方向に向けて複数配置される蓄電池集合体と、蓄電池集合体における複数の第１の電極に対向する第１面と、蓄電池集合体における複数の第２の電極に対向する第２面と、第１面と第２面とに交差しながら蓄電池集合体を挟んで互いに対向する第３面と第４面とを含む構造体とを備える。構造体には、蓄電池集合体における複数の第１の電極側の面と第１面と第３面と第４面とに囲まれる空間が形成され、構造体は、空間のうち、蓄電池集合体における第３面側端の蓄電池セルよりも第３面側に位置する第１面の部分、あるいは第３面に排気口を備える。１つの空間は１つの排気口を有する。 In order to solve the above problems, in a storage battery module according to an aspect of the present disclosure, a storage battery cell having a first electrode and a second electrode facing each other is a plurality of storage batteries having the first electrode directed in the same direction. The storage battery assembly to be arranged, a first surface facing the plurality of first electrodes in the storage battery assembly, a second surface facing the plurality of second electrodes in the storage battery assembly, a first surface and a second surface. And a structure including a third surface and a fourth surface that face each other and face each other across the storage battery assembly. A space surrounded by a plurality of first electrode-side surfaces, a first surface, a third surface, and a fourth surface of the storage battery assembly is formed in the structure, and the structure is a storage battery assembly in the space. In the portion of the first surface located on the third surface side with respect to the storage battery cell at the end of the third surface in, the exhaust port is provided on the third surface. One space has one exhaust port.
　本開示によれば、熱暴走電池の高温燃焼による隣接電池の熱暴走（類焼）を抑制できる。 According to the present disclosure, thermal runaway (similar burning) of an adjacent battery due to high temperature combustion of the thermal runaway battery can be suppressed.
本実施例に係る蓄電池モジュールの構造を示す斜視図である。It is a perspective view which shows the structure of the storage battery module which concerns on a present Example. 図１の蓄電池モジュールの構造を示す分解斜視図である。It is an exploded perspective view showing the structure of the storage battery module of FIG. 図１の蓄電池モジュールの構造を示す別の分解斜視図である。It is another exploded perspective view showing the structure of the storage battery module of FIG. 図１の蓄電池モジュールの構造を示す断面図である。It is sectional drawing which shows the structure of the storage battery module of FIG. 図１の蓄電池モジュールの構造を示す別の断面図である。It is another sectional view which shows the structure of the storage battery module of FIG. 図６（ａ）－（ｂ）は、図１の蓄電池モジュールにおけるガスの排出の概要を示す図である。FIGS. 6A and 6B are diagrams showing an outline of gas discharge in the storage battery module of FIG.
　本開示の実施例を具体的に説明する前に、実施例の概要を説明する。本実施例は、複数の蓄電池セルが収納される蓄電池モジュールに関する。各蓄電池セルは、正極と負極とが互いに反対を向いた構造を有し、例えば、正極が同一方向を向くように並べられる。蓄電池セルがリチウムイオン二次電池である場合、内部短絡等が発生すると蓄電池セル内にガスが発生する。また、ガスの発生により、蓄電池セル内の圧力が増加するが、安全機構によりガスが正極側から蓄電池セル外に放出される。このようなガスは高温高圧であり、ガスによる燃焼が生じると、蓄電池モジュール内の他の蓄電池セルも熱暴走（類焼）する。この類焼により、蓄電池モジュール全体、または製品全体が燃えてしまうおそれがある。ガスによる類焼を抑制するために、蓄電池の構造体と複数の蓄電池セルの正極側の面との間には空間が設けられ、空間は排気口に接続される。蓄電池セルからの高温ガスは空間に放出され、排気口から蓄電池モジュール外に放出される。 Before specifically explaining the example of the present disclosure, an outline of the example will be described. The present embodiment relates to a storage battery module that stores a plurality of storage battery cells. Each of the storage battery cells has a structure in which the positive electrode and the negative electrode face each other, and for example, the positive electrodes are arranged so that the positive electrodes face the same direction. When the storage battery cell is a lithium ion secondary battery, gas is generated in the storage battery cell when an internal short circuit or the like occurs. Moreover, although the pressure inside the storage battery cell increases due to the generation of gas, the safety mechanism releases the gas from the positive electrode side to the outside of the storage battery cell. Such gas has a high temperature and high pressure, and when combustion by the gas occurs, other storage battery cells in the storage battery module also undergo thermal runaway (kindling). Due to this burning, the entire storage battery module or the entire product may burn. In order to suppress burning by gas, a space is provided between the structure of the storage battery and the positive electrode side surface of the plurality of storage battery cells, and the space is connected to the exhaust port. The high temperature gas from the storage battery cell is discharged into the space and is discharged to the outside of the storage battery module through the exhaust port.
　このような状況下において、空間が複数に分割された構造を有する場合、ガスは１つの排気口から排出されにくくなる。そのため、ガスによる類焼が生じやすくなる。一方、１つの空間に複数の排気口が接続される場合、ガスは排出されやすくなる。しかしながら、１つの空間に複数の排気口が接続されると、蓄電池モジュール外から空間に空気が流入しやすくなり、ガスによる高温燃焼が生じやすくなる。そのため、ガスによる高温燃焼を抑制するような構造体内の空間と排気口との関係が求められる。本実施例に係る蓄電池モジュールは、１つの空間に１つの排気口を接続する。そのため、構造体内に１つの空間が形成される場合、構造体に１つの排気口が設けられる。また、構造体内に複数の空間が形成される場合、構造体に複数の排気口が設けられる。ここで、一般的に不完全燃焼温度＜完全燃焼温度の関係であり、金属を溶かず「ふいご」の様に空気（酸素）を多く送り込むと燃焼温度はさらに高温になる。ろうそくの芯の部分は不完全燃焼で約６００℃、炎の先端は約１０００℃を超える温度として知られている。以下の説明において、「平行」、「垂直」は、完全な平行、垂直だけではなく、誤差の範囲で平行、垂直からずれている場合も含む。また、「略」は、おおよその範囲で同一であるという意味である。 Under such circumstances, if the space has a structure that is divided into multiple parts, it will be difficult for gas to be discharged from one exhaust port. Therefore, the calcination due to the gas is likely to occur. On the other hand, when a plurality of exhaust ports are connected to one space, the gas is easily discharged. However, when a plurality of exhaust ports are connected to one space, air easily flows into the space from outside the storage battery module, and high-temperature combustion due to gas is likely to occur. Therefore, a relationship between the space inside the structure and the exhaust port is required so as to suppress high temperature combustion due to gas. In the storage battery module according to this embodiment, one exhaust port is connected to one space. Therefore, when one space is formed in the structure, one exhaust port is provided in the structure. In addition, when a plurality of spaces are formed in the structure, a plurality of exhaust ports are provided in the structure. Here, in general, the relationship of incomplete combustion temperature<complete combustion temperature is satisfied, and if a large amount of air (oxygen) is sent in like a "bellows" without melting metal, the combustion temperature becomes higher. It is known that the candle core has an incomplete combustion of about 600°C and the flame tip has a temperature of more than about 1000°C. In the following description, “parallel” and “vertical” include not only perfect parallel and vertical, but also parallel and vertical deviations within the error range. Further, "substantially" means that they are the same in an approximate range.
　図１は、蓄電池モジュール１０００の構造を示す斜視図である。図１に示すように、ｘ軸、ｙ軸、ｚ軸を含む直交座標系が規定される。ｘ軸、ｙ軸は、蓄電池モジュール１０００の底面内において互いに直交する。ｚ軸は、ｘ軸およびｙ軸に垂直であり、蓄電池モジュール１０００の高さ（垂直）方向に延びる。また、ｘ軸、ｙ軸、ｚ軸のそれぞれの正の方向は、図１における矢印の方向に規定され、負の方向は、矢印と逆向きの方向に規定される。また、ｘ軸の正方向側を「前側」あるいは「正面側」、ｘ軸の負方向側を「後側」あるいは「背面側」、ｚ軸の正方向側を「上側」あるいは「天面側」、ｚ軸の負方向側を「下側」あるいは「底面側」ということもある。さらに、ｙ軸方向の正方向側を「右側」、ｙ軸の負方向側を「左側」ということもある。 FIG. 1 is a perspective view showing the structure of the storage battery module 1000. As shown in FIG. 1, an orthogonal coordinate system including an x axis, ay axis, and az axis is defined. The x axis and the y axis are orthogonal to each other in the bottom surface of the storage battery module 1000. The z-axis is perpendicular to the x-axis and the y-axis and extends in the height (vertical) direction of the storage battery module 1000. The positive directions of the x-axis, the y-axis, and the z-axis are defined in the directions of the arrows in FIG. 1, and the negative directions are defined in the directions opposite to the arrows. The positive side of the x-axis is the "front side" or "front side", the negative side of the x-axis is the "rear side" or "rear side", and the positive side of the z-axis is "upper side" or "top side". , And the negative side of the z-axis may be referred to as the “lower side” or the “bottom side”. Further, the positive side in the y-axis direction may be referred to as “right side”, and the negative side in the y-axis may be referred to as “left side”.
　構造体１００は、前側筐体１１０、後側筐体１３０、右側蓋３５２を含む。前側筐体１１０は、前面１１２、前側下面１１４、前側上面１１６、前側排気口１１８と総称される第１前側排気口１１８ａから第４前側排気口１１８ｄ、左側面１５０を含む。後側筐体１３０は、後面１３２、後側下面１３４、後側上面１３６、右側面１５２を含む。前側筐体１１０、後側筐体１３０の各構成要素は、ネジ、溶接、接着材等で接続されているが、公知の技術が使用されればよいので、ここでは説明を省略する。 The structure 100 includes a front housing 110, a rear housing 130, and a right lid 352. The front housing 110 includes a front surface 112, a front lower surface 114, a front upper surface 116, a first front exhaust opening 118a to a fourth front exhaust opening 118d collectively referred to as a front exhaust opening 118, and a left side surface 150. The rear housing 130 includes a rear surface 132, a rear lower surface 134, a rear upper surface 136, and a right side surface 152. The respective components of the front housing 110 and the rear housing 130 are connected by screws, welding, an adhesive material, etc., but a publicly known technique may be used, and the description thereof will be omitted here.
　前側筐体１１０の前面１１２は、ｙ－ｚ平面上に広がる矩形の板形状を有する。前面１１２の下側端から後側に向かって前側下面１１４が延び、前面１１２の上側端から後側に向かって前側上面１１６が延び、前面１１２の左側端から後側に向かって左側面１５０が延びる。前側下面１１４と前側上面１１６と左側面１５０は、いずれも板形状を有する。板形状は矩形状であってもよい。また、後側筐体１３０の後面１３２は、ｙ－ｚ平面上に広がる矩形の板形状を有する。後面１３２の下側端から前側に向かって後側下面１３４が延び、後面１３２の上側端から前側に向かって後側上面１３６が延び、後面１３２の右側端から前側に向かって右側面１５２が延びる。後側下面１３４と後側上面１３６と右側面１５２は、いずれも板形状を有する。板形状は矩形状であってもよい。 The front surface 112 of the front housing 110 has a rectangular plate shape extending on the yz plane. The front lower surface 114 extends rearward from the lower end of the front surface 112, the front upper surface 116 extends rearward from the upper end of the front surface 112, and the left side surface 150 extends rearward from the left end of the front surface 112. Extend. Each of the front lower surface 114, the front upper surface 116, and the left side surface 150 has a plate shape. The plate shape may be rectangular. Further, the rear surface 132 of the rear housing 130 has a rectangular plate shape that spreads on the yz plane. The rear lower surface 134 extends from the lower end of the rear surface 132 toward the front side, the rear upper surface 136 extends from the upper end of the rear surface 132 toward the front side, and the right side surface 152 extends from the right end of the rear surface 132 toward the front side. .. Each of the rear lower surface 134, the rear upper surface 136, and the right side surface 152 has a plate shape. The plate shape may be rectangular.
　前側下面１１４の後側端と、後側下面１３４の前側端とが接続されることによって、前側下面１１４と後側下面１３４は、１つの下面を形成する。また、前側上面１１６の後側端と、後側上面１３６の前側端とが接続されることによって、前側上面１１６と後側上面１３６は、１つの上面を形成する。下面と上面は、前面１１２と後面１３２とに交差する。このように前側筐体１１０と後側筐体１３０とが接続されることによって、構造体１００は箱形状を有する。その際、構造体１００の右側は、右側面１５２、右側蓋３５２でふさがれ、構造体１００の左側は、左側面１５０、左側蓋（図示せず）でふさがれる。以下では、前面１１２を第１面と呼び、後面１３２を第２面と呼び、下面を第３面と呼び、上面を第４面と呼んでもよい。ここで、前側筐体１１０と後側筐体１３０は、熱伝導性の高い材料、例えば、金属、カーボンにより形成される。そのため、前面１１２、前側下面１１４、前側上面１１６、後面１３２、後側下面１３４、後側上面１３６は、例えば、金属板である。 By connecting the rear end of the front lower surface 114 and the front end of the rear lower surface 134, the front lower surface 114 and the rear lower surface 134 form one lower surface. Further, by connecting the rear end of the front upper surface 116 and the front end of the rear upper surface 136, the front upper surface 116 and the rear upper surface 136 form one upper surface. The lower surface and the upper surface intersect the front surface 112 and the rear surface 132. By connecting the front housing 110 and the rear housing 130 in this manner, the structure 100 has a box shape. At this time, the right side of the structure 100 is closed by the right side surface 152 and the right side cover 352, and the left side of the structure 100 is closed by the left side surface 150 and the left side cover (not shown). In the following, the front surface 112 may be referred to as a first surface, the rear surface 132 may be referred to as a second surface, the lower surface may be referred to as a third surface, and the upper surface may be referred to as a fourth surface. Here, the front housing 110 and the rear housing 130 are formed of a material having high thermal conductivity, such as metal or carbon. Therefore, the front surface 112, the front lower surface 114, the front upper surface 116, the rear surface 132, the rear lower surface 134, and the rear upper surface 136 are, for example, metal plates.
　以下では、図２から図５を使用しながら、このような蓄電池モジュール１０００の構造をさらに説明する。図２は、蓄電池モジュール１０００の構造を示す分解斜視図である。図３は、蓄電池モジュール１０００の構造を示す別の分解斜視図であり、図２をさらに分解した構造を示す。図４は、蓄電池モジュール１０００の構造を示す断面図であり、図１のＡ－Ａ’線の断面図である。図５は、蓄電池モジュール１０００の構造を示す別の断面図であり、図１のＢ－Ｂ’線の断面図である。 The structure of such a storage battery module 1000 will be further described below with reference to FIGS. 2 to 5. FIG. 2 is an exploded perspective view showing the structure of the storage battery module 1000. FIG. 3 is another exploded perspective view showing the structure of the storage battery module 1000, which is a further exploded structure of FIG. 2. FIG. 4 is a cross-sectional view showing the structure of the storage battery module 1000, which is a cross-sectional view taken along the line AA′ in FIG. 1. FIG. 5 is another cross-sectional view showing the structure of the storage battery module 1000, which is a cross-sectional view taken along the line B-B′ of FIG. 1.
　前側筐体１１０と後側筐体１３０との間には、前側ケース２４０と後側ケース２５０との組合せが収納される。前側ケース２４０と後側ケース２５０との組合せは中空の箱形状を有しており、絶縁性を有する材料、例えば樹脂により形成される。この組合せでは、前側ケース２４０の後側端と後側ケース２５０の前側端が接続されており、前側ケース２４０は前側筐体１１０に対向し、後側ケース２５０は後側筐体１３０に対向する。前側ケース２４０と後側ケース２５０との組合せの内部には、蓄電池集合体２００と総称される第１蓄電池集合体２００ａから第７蓄電池集合体２００ｇ、電池ホルダ２３０が収納される。特に、左側から右側に向かって、第１蓄電池集合体２００ａ、第２蓄電池集合体２００ｂ、・・・、第６蓄電池集合体２００ｆ、第７蓄電池集合体２００ｇが順に並べられる。そのため、下面と上面は、蓄電池集合体２００を挟んで互いに対向するといえる。各蓄電池集合体２００には、複数の蓄電池セル２１０が配置される。 A combination of the front case 240 and the rear case 250 is housed between the front case 110 and the rear case 130. The combination of the front case 240 and the rear case 250 has a hollow box shape and is made of an insulating material such as resin. In this combination, the rear end of the front case 240 and the front end of the rear case 250 are connected, the front case 240 faces the front housing 110, and the rear case 250 faces the rear housing 130. .. Inside the combination of the front case 240 and the rear case 250, the first storage battery assembly 200a to the seventh storage battery assembly 200g, which are collectively referred to as the storage battery assembly 200, are housed. In particular, the first storage battery assembly 200a, the second storage battery assembly 200b,..., The sixth storage battery assembly 200f, and the seventh storage battery assembly 200g are arranged in order from the left side to the right side. Therefore, it can be said that the lower surface and the upper surface face each other with the storage battery assembly 200 interposed therebetween. A plurality of storage battery cells 210 is arranged in each storage battery assembly 200.
　蓄電池セル２１０は、例えば、円柱形のリチウムイオン二次電池である。蓄電池セル２１０における円柱形の両端には、互いに反対を向いた正極２１２と負極２１４とが配置される。蓄電池セル２１０には公知の技術が使用されればよく、内部短絡等の発生により内部の圧力が上昇した場合、高温高圧ガスを外部に放出する安全機構が備えられる。一般的に、高温高圧ガスは正極２１２側から放出される。 The storage battery cell 210 is, for example, a cylindrical lithium-ion secondary battery. A positive electrode 212 and a negative electrode 214 facing each other are arranged at both ends of the columnar shape of the storage battery cell 210. A publicly known technique may be used for the storage battery cell 210, and a safety mechanism for discharging the high-temperature high-pressure gas to the outside when the internal pressure rises due to an internal short circuit or the like is provided. Generally, the high temperature and high pressure gas is discharged from the positive electrode 212 side.
　ここで、第１蓄電池集合体２００ａ、第３蓄電池集合体２００ｃ、第５蓄電池集合体２００ｅ、第７蓄電池集合体２００ｇのそれぞれに含まれた複数の蓄電池セル２１０は、正極２１２を前側に向け、負極２１４を後側に向ける。また、第２蓄電池集合体２００ｂ、第４蓄電池集合体２００ｄ、第６蓄電池集合体２００ｆのそれぞれに含まれた複数の蓄電池セル２１０は、正極２１２を後側に向け、負極２１４を前側に向ける。つまり、１つの蓄電池集合体２００内では正極２１２の方向が同一であるが、隣接した２つの蓄電池集合体２００の間では正極２１２の方向が逆になる。前面１１２に対向する前側の電極を「第１の電極」と呼び、後面１３２に対向する後側の電極を「第２の電極」と呼ぶ場合、第１蓄電池集合体２００ａ等では、第１の電極が正極２１２であり、第２の電極が負極２１４である。また、第２蓄電池集合体２００ｂ等では、第１の電極が負極２１４であり、第２の電極が正極２１２である。 Here, the plurality of storage battery cells 210 included in each of the first storage battery assembly 200a, the third storage battery assembly 200c, the fifth storage battery assembly 200e, and the seventh storage battery assembly 200g have the positive electrode 212 facing forward, The negative electrode 214 faces the rear side. In addition, in the plurality of storage battery cells 210 included in each of the second storage battery assembly 200b, the fourth storage battery assembly 200d, and the sixth storage battery assembly 200f, the positive electrode 212 faces the rear side and the negative electrode 214 faces the front side. That is, the direction of the positive electrode 212 is the same in one storage battery assembly 200, but the direction of the positive electrode 212 is opposite between two adjacent storage battery assemblies 200. When the front electrode facing the front surface 112 is referred to as a "first electrode" and the rear electrode facing the rear surface 132 is referred to as a "second electrode", the first storage battery assembly 200a or the like has the first electrode. The electrode is the positive electrode 212 and the second electrode is the negative electrode 214. In addition, in the second storage battery assembly 200b and the like, the first electrode is the negative electrode 214 and the second electrode is the positive electrode 212.
　電池ホルダ２３０は、複数の蓄電池セル２１０のそれぞれを挿入可能な貫通孔を備えることによって、複数の蓄電池セル２１０のそれぞれの位置を固定する。電池ホルダ２３０は、絶縁性を有する材料、例えば樹脂により形成される。電池ホルダ２３０によって固定された複数の蓄電池セル２１０の前側には前側ケース２４０が取り付けられ、電池ホルダ２３０によって固定された複数の蓄電池セル２１０の後側には後側ケース２５０が取り付けられる。 The battery holder 230 has a through hole into which each of the plurality of storage battery cells 210 can be inserted, thereby fixing the respective positions of the plurality of storage battery cells 210. The battery holder 230 is made of an insulating material such as resin. A front case 240 is attached to the front side of the plurality of storage battery cells 210 fixed by the battery holder 230, and a rear case 250 is attached to the rear side of the plurality of storage battery cells 210 fixed by the battery holder 230.
　前側ケース２４０は、ｙ－ｚ平面に広がる板形状の前側ケース板部２４４を有し、前側ケース板部２４４には、各蓄電池セル２１０の正極２１２に対向した位置に貫通孔が設けられる。また、前側ケース板部２４４の前側の面において、第２蓄電池集合体２００ｂと第３蓄電池集合体２００ｃとの境界の位置には、第１前側隔壁２４２ａが設けられる。また、第４蓄電池集合体２００ｄと第５蓄電池集合体２００ｅとの境界の位置には、第２前側隔壁２４２ｂが設けられ、第６蓄電池集合体２００ｆと第７蓄電池集合体２００ｇとの境界の位置には、第３前側隔壁２４２ｃが設けられる。第１前側隔壁２４２ａから第３前側隔壁２４２ｃは前側隔壁２４２と総称され、前側隔壁２４２は、前側に向かって突出するとともに上下方向に延びる。 The front case 240 has a plate-shaped front case plate portion 244 that spreads in the yz plane, and the front case plate portion 244 is provided with a through hole at a position facing the positive electrode 212 of each storage battery cell 210. Further, a first front partition wall 242a is provided on the front surface of the front case plate portion 244 at the position of the boundary between the second storage battery assembly 200b and the third storage battery assembly 200c. Further, a second front partition wall 242b is provided at the position of the boundary between the fourth storage battery assembly 200d and the fifth storage battery assembly 200e, and the position of the boundary between the sixth storage battery assembly 200f and the seventh storage battery assembly 200g. Is provided with a third front partition 242c. The first front partition 242a to the third front partition 242c are collectively referred to as a front partition 242, and the front partition 242 projects toward the front and extends in the vertical direction.
　第１前側隔壁２４２ａから第３前側隔壁２４２ｃによって、前側ケース板部２４４の前側の面は、第１前側凹部２４６ａから第４前側凹部２４６ｄに区分される。例えば、第２前側凹部２４６ｂは、第１前側隔壁２４２ａと第２前側隔壁２４２ｂとに挟まれた部分、つまり第３蓄電池集合体２００ｃと第４蓄電池集合体２００ｄに対向した位置に配置される。第１前側凹部２４６ａ、第３前側凹部２４６ｃも第２前側凹部２４６ｂと同様である。一方、第４前側凹部２４６ｄは、第７蓄電池集合体２００ｇだけに対向した位置に配置されるので、第１前側凹部２４６ａから第３前側凹部２４６ｃよりも狭い。このような第１前側凹部２４６ａから第４前側凹部２４６ｄは前側凹部２４６と総称される。 The front surface of the front case plate 244 is divided into the first front recess 246a to the fourth front recess 246d by the first front partition 242a to the third front partition 242c. For example, the second front recess 246b is arranged at a portion sandwiched between the first front partition 242a and the second front partition 242b, that is, at a position facing the third storage battery assembly 200c and the fourth storage battery assembly 200d. The first front recess 246a and the third front recess 246c are similar to the second front recess 246b. On the other hand, the fourth front recess 246d is arranged at a position facing only the seventh storage battery assembly 200g, and thus is narrower than the first front recess 246a to the third front recess 246c. The first front recess 246a to the fourth front recess 246d are collectively referred to as the front recess 246.
　図２、図３に示されるように、第１前側凹部２４６ａには第１前側リード板３００ａが嵌め込まれ、第２前側凹部２４６ｂには第２前側リード板３００ｂが嵌め込まれる。また、第３前側凹部２４６ｃには第３前側リード板３００ｃが嵌め込まれ、第４前側凹部２４６ｄには第４前側リード板３００ｄが嵌め込まれる。第１前側リード板３００ａから第４前側リード板３００ｄは前側リード板３００と総称され、前側リード板３００は板形状を有する。第１前側リード板３００ａは、第１蓄電池集合体２００ａの複数の蓄電池セル２１０の正極２１２と、第２蓄電池集合体２００ｂの複数の蓄電池セル２１０の負極２１４とに接続される。第１前側リード板３００ａには、１つの正極２１２と１つの負極２１４とを電気的に接続する配線パターンが設けられているので、第１蓄電池集合体２００ａの１つの蓄電池セル２１０と、第２蓄電池集合体２００ｂの１つの蓄電池セル２１０は、直列に接続される。ここで、第１前側リード板３００ａにおいて正極２１２と接続される部分には貫通孔が設けられる。第２前側リード板３００ｂ、第３前側リード板３００ｃも第１前側リード板３００ａと同様である。一方、第４前側リード板３００ｄは、第７蓄電池集合体２００ｇの複数の蓄電池セル２１０の正極２１２だけに接続される。そのため、第４前側リード板３００ｄは、第１前側リード板３００ａから第３前側リード板３００ｃよりも小さい。 As shown in FIGS. 2 and 3, the first front lead plate 300a is fitted in the first front recess 246a, and the second front lead plate 300b is fitted in the second front recess 246b. The third front lead plate 300c is fitted in the third front recess 246c, and the fourth front lead plate 300d is fitted in the fourth front recess 246d. The first front lead plate 300a to the fourth front lead plate 300d are collectively referred to as the front lead plate 300, and the front lead plate 300 has a plate shape. The first front lead plate 300a is connected to the positive electrodes 212 of the plurality of storage battery cells 210 of the first storage battery assembly 200a and the negative electrodes 214 of the plurality of storage battery cells 210 of the second storage battery assembly 200b. Since the first front lead plate 300a is provided with a wiring pattern for electrically connecting one positive electrode 212 and one negative electrode 214, one storage battery cell 210 of the first storage battery assembly 200a and a second storage battery cell One storage battery cell 210 of the storage battery assembly 200b is connected in series. Here, a through hole is provided in a portion of the first front lead plate 300a connected to the positive electrode 212. The second front lead plate 300b and the third front lead plate 300c are similar to the first front lead plate 300a. On the other hand, the fourth front lead plate 300d is connected only to the positive electrodes 212 of the plurality of storage battery cells 210 of the seventh storage battery assembly 200g. Therefore, the fourth front lead plate 300d is smaller than the first front lead plate 300a to the third front lead plate 300c.
　後側ケース２５０は、ｙ－ｚ平面に広がる板形状の後側ケース板部２５４を有し、後側ケース板部２５４には、各蓄電池セル２１０の正極２１２に対向した位置に貫通孔が設けられる。また、図５に示されるように、後側ケース板部２５４の後側の面において、第１蓄電池集合体２００ａと第２蓄電池集合体２００ｂとの境界の位置には、第１後側隔壁２５２ａが設けられる。また、第３蓄電池集合体２００ｃと第４蓄電池集合体２００ｄとの境界の位置には、第２後側隔壁２５２ｂが設けられ、第５蓄電池集合体２００ｅと第６蓄電池集合体２００ｆとの境界の位置には、第３後側隔壁２５２ｃが設けられる。第１後側隔壁２５２ａから第３後側隔壁２５２ｃは後側隔壁２５２と総称され、後側隔壁２５２は、後側に向かって突出するとともに上下方向に延びる。 The rear case 250 has a plate-shaped rear case plate portion 254 that spreads in the yz plane, and the rear case plate portion 254 is provided with a through hole at a position facing the positive electrode 212 of each storage battery cell 210. Be done. Further, as shown in FIG. 5, on the rear surface of the rear case plate portion 254, the first rear partition wall 252a is provided at the boundary position between the first storage battery assembly 200a and the second storage battery assembly 200b. Is provided. In addition, a second rear partition 252b is provided at a boundary position between the third storage battery assembly 200c and the fourth storage battery assembly 200d, and a boundary between the fifth storage battery assembly 200e and the sixth storage battery assembly 200f is provided. A third rear partition 252c is provided at the position. The first rear partition 252a to the third rear partition 252c are collectively referred to as a rear partition 252, and the rear partition 252 projects rearward and extends in the up-down direction.
　第１後側隔壁２５２ａから第３後側隔壁２５２ｃによって、後側ケース板部２５４の後側の面は、第１後側凹部２５６ａから第４後側凹部２５６ｄに区分される。例えば、第２後側凹部２５６ｂは、第１後側隔壁２５２ａと第２後側隔壁２５２ｂとに挟まれた部分、つまり第２蓄電池集合体２００ｂと第３蓄電池集合体２００ｃに対向した位置に配置される。第３後側凹部２５６ｃ、第４後側凹部２５６ｄも第２後側凹部２５６ｂと同様である。一方、第１後側凹部２５６ａは、第１蓄電池集合体２００ａだけに対向した位置に配置されるので、第２後側凹部２５６ｂから第４後側凹部２５６ｄよりも狭い。このような第１後側凹部２５６ａから第４後側凹部２５６ｄは後側凹部２５６と総称される。 The rear surface of the rear case plate 254 is divided into the first rear recess 256a to the fourth rear recess 256d by the first rear partition 252a to the third rear partition 252c. For example, the second rear recess 256b is disposed at a portion sandwiched between the first rear partition 252a and the second rear partition 252b, that is, at a position facing the second storage battery assembly 200b and the third storage battery assembly 200c. To be done. The third rear concave portion 256c and the fourth rear concave portion 256d are similar to the second rear concave portion 256b. On the other hand, the first rear recess 256a is arranged at a position facing only the first storage battery assembly 200a, and thus is narrower than the second rear recess 256b to the fourth rear recess 256d. The first rear concave portion 256a to the fourth rear concave portion 256d are collectively referred to as the rear concave portion 256.
　第１後側凹部２５６ａには第１後側リード板３０２ａが嵌め込まれ、第２後側凹部２５６ｂには第２後側リード板３０２ｂが嵌め込まれる。また、第３後側凹部２５６ｃには第３後側リード板３０２ｃが嵌め込まれ、第４後側凹部２５６ｄには第４後側リード板３０２ｄが嵌め込まれる。第１後側リード板３０２ａから第４後側リード板３０２ｄは後側リード板３０２と総称され、後側リード板３０２は板形状を有する。第２後側リード板３０２ｂは、第２蓄電池集合体２００ｂの複数の蓄電池セル２１０の正極２１２と、第３蓄電池集合体２００ｃの複数の蓄電池セル２１０の負極２１４とに接続される。第２後側リード板３０２ｂには、１つの正極２１２と１つの負極２１４とを電気的に接続する配線パターンが設けられているので、第２蓄電池集合体２００ｂの１つの蓄電池セル２１０と、第３蓄電池集合体２００ｃの１つの蓄電池セル２１０は、直列に接続される。ここで、第２後側リード板３０２ｂにおいて正極２１２と接続される部分には貫通孔が設けられる。第３後側リード板３０２ｃ、第４後側リード板３０２ｄも第２後側リード板３０２ｂと同様である。一方、第１後側リード板３０２ａは、第１蓄電池集合体２００ａの複数の蓄電池セル２１０の負極２１４だけに接続される。そのため、第１後側リード板３０２ａは、第２後側リード板３０２ｂから第４後側リード板３０２ｄよりも小さい。このような前側リード板３００と後側リード板３０２によって、第１蓄電池集合体２００ａから第７蓄電池集合体２００ｇのそれぞれに含まれる１つの蓄電池セル２１０は、直列に接続される。 The first rear lead plate 302a is fitted in the first rear recess 256a, and the second rear lead plate 302b is fitted in the second rear recess 256b. In addition, the third rear lead plate 302c is fitted in the third rear recess 256c, and the fourth rear lead plate 302d is fitted in the fourth rear recess 256d. The first rear lead plate 302a to the fourth rear lead plate 302d are collectively referred to as the rear lead plate 302, and the rear lead plate 302 has a plate shape. The second rear lead plate 302b is connected to the positive electrodes 212 of the plurality of storage battery cells 210 of the second storage battery assembly 200b and the negative electrodes 214 of the plurality of storage battery cells 210 of the third storage battery assembly 200c. Since the second rear side lead plate 302b is provided with a wiring pattern for electrically connecting one positive electrode 212 and one negative electrode 214, one storage battery cell 210 of the second storage battery assembly 200b, One storage battery cell 210 of the three storage battery assembly 200c is connected in series. Here, a through hole is provided in a portion of the second rear lead plate 302b that is connected to the positive electrode 212. The third rear lead plate 302c and the fourth rear lead plate 302d are similar to the second rear lead plate 302b. On the other hand, the first rear lead plate 302a is connected only to the negative electrodes 214 of the plurality of storage battery cells 210 of the first storage battery assembly 200a. Therefore, the first rear lead plate 302a is smaller than the second rear lead plate 302b to the fourth rear lead plate 302d. With such a front lead plate 300 and a rear lead plate 302, one storage battery cell 210 included in each of the first storage battery assembly 200a to the seventh storage battery assembly 200g is connected in series.
　図２、３に示されるように、蓄電池集合体２００を収納しながら組み合わされた前側ケース２４０と後側ケース２５０の上側には、制御基板トレイ３３０が取り付けられる。制御基板トレイ３３０は、左右方向に延びる板形状のトレイである。制御基板トレイ３３０の上には、制御基板３３２が配置される。制御基板３３２は、ＩＣ（Ｉｎｔｅｇｒａｔｅｄ　Ｃｉｒｃｕｉｔ）等を搭載しており、蓄電池モジュール１０００の動作を制御する。制御基板３３２は、制御基板トレイ３３０と同様に左右方向に延びる板形状を有するが、制御基板トレイ３３０よりも小さい。制御基板３３２が配置された制御基板トレイ３３０の上側を覆うように、制御基板蓋３３４が取り付けられる。制御基板蓋３３４は、制御基板３３２を保護するための蓋であり、制御基板トレイ３３０に合わせた形状を有する。 As shown in FIGS. 2 and 3, a control board tray 330 is attached to the upper side of the front case 240 and the rear case 250 that are combined while accommodating the storage battery assembly 200. The control board tray 330 is a plate-shaped tray extending in the left-right direction. A control board 332 is arranged on the control board tray 330. The control board 332 includes an IC (Integrated Circuit) and the like, and controls the operation of the storage battery module 1000. The control board 332 has a plate shape extending in the left-right direction similarly to the control board tray 330, but is smaller than the control board tray 330. A control board lid 334 is attached so as to cover the upper side of the control board tray 330 on which the control board 332 is arranged. The control board lid 334 is a lid for protecting the control board 332, and has a shape that matches the control board tray 330.
　図５に示されるように、蓄電池集合体２００を収納しながら組み合わされた前側ケース２４０と後側ケース２５０の左側には左側蓋３５０が取り付けられ、右側には右側蓋３５２が取り付けられる。左側蓋３５０と右側蓋３５２は、上下方向に延びる板形状を有し、前側ケース２４０と後側ケース２５０の組合せを側面から保護する。制御基板トレイ３３０、制御基板蓋３３４、左側蓋３５０、右側蓋３５２は、絶縁性を有する材料、例えば樹脂により形成される。 As shown in FIG. 5, the left side lid 350 is attached to the left side of the front case 240 and the rear case 250, which are combined while accommodating the storage battery assembly 200, and the right side lid 352 is attached to the right side. The left lid 350 and the right lid 352 have a plate shape extending in the vertical direction and protect the combination of the front case 240 and the rear case 250 from the side surface. The control board tray 330, the control board lid 334, the left side lid 350, and the right side lid 352 are formed of an insulating material such as resin.
　図２に示されるように、制御基板トレイ３３０から制御基板蓋３３４、左側蓋３５０、右側蓋３５２が取り付けられた前側ケース２４０と後側ケース２５０との組合せは、前述のごとく、前側筐体１１０と後側筐体１３０との間に配置される。これにより、図４に示されるように、前面１１２と前側下面１１４と前側上面１１６と前側リード板３００（第３前側リード板３００ｃ）に囲まれる前空間４００（第３前空間４００ｃ）が形成される。ここで、第３前側リード板３００ｃは、第５蓄電池集合体２００ｅと第６蓄電池集合体２００ｆにおける複数の第１の電極側の面に相当する。第３前空間４００ｃのうち、第５蓄電池集合体２００ｅと第６蓄電池集合体２００ｆにおける下面側端の蓄電池セル２１０よりも下面側に位置する前面１１２の部分、あるいは前側下面１１４には、第３前側排気口１１８ｃが設けられる。第３前側排気口１１８ｃは、前面１１２の部分あるいは前側下面１１４に形成された貫通孔であり、これは開口であるともいえる。 As shown in FIG. 2, the combination of the front case 240 and the rear case 250 to which the control board tray 330 is attached with the control board lid 334, the left side lid 350, and the right side lid 352 is the same as described above. And the rear housing 130. As a result, as shown in FIG. 4, a front space 400 (third front space 400c) surrounded by the front surface 112, the front lower surface 114, the front upper surface 116, and the front lead plate 300 (third front lead plate 300c) is formed. It Here, the 3rd front side lead plate 300c is equivalent to the surface by the side of the some 1st electrode in 5th storage battery assembly 200e and 6th storage battery assembly 200f. In the third front space 400c, a portion of the front surface 112 located on the lower surface side of the storage battery cells 210 at the lower surface side ends of the fifth storage battery assembly 200e and the sixth storage battery assembly 200f, or the front lower surface 114 has a third surface. A front exhaust port 118c is provided. The third front exhaust port 118c is a through hole formed in a portion of the front surface 112 or the front lower surface 114, and can be said to be an opening.
　また、後面１３２と後側下面１３４と後側上面１３６と後側リード板３０２（第３後側リード板３０２ｃ）に囲まれる後空間４１０（第３後空間４１０ｃ）が形成される。ここで、第３後側リード板３０２ｃは、第４蓄電池集合体２００ｄと第５蓄電池集合体２００ｅにおける複数の第２の電極側の面に相当する。第３後空間４１０ｃのうち、第４蓄電池集合体２００ｄと第５蓄電池集合体２００ｅにおける下面側端の蓄電池セル２１０よりも下面側に位置する後面１３２の部分、あるいは後側下面１３４には、第２後側排気口１３８ｂ（図２）が設けられる。第２後側排気口１３８ｂは、後面１３２の部分あるいは後側下面１３４に形成された貫通孔である。 Also, a rear space 410 (third rear space 410c) surrounded by the rear surface 132, the rear lower surface 134, the rear upper surface 136, and the rear lead plate 302 (third rear lead plate 302c) is formed. Here, the third rear lead plate 302c corresponds to a surface of the fourth storage battery assembly 200d and the fifth storage battery assembly 200e on the side of the plurality of second electrodes. In the third rear space 410c, the portion of the rear surface 132 located on the lower surface side of the storage battery cells 210 at the lower surface side end of the fourth storage battery assembly 200d and the fifth storage battery assembly 200e, or the rear lower surface 134, 2 rear exhaust port 138b (FIG. 2) is provided. The second rear exhaust port 138b is a through hole formed in the rear surface 132 or the rear lower surface 134.
　前空間４００と後空間４１０について、図５を使用してさらに詳細に説明すると、前空間４００は、第１前側隔壁２４２ａから第３前側隔壁２４２ｃによって、第１前空間４００ａから第４前空間４００ｄに分割される。そのため、前側隔壁２４２は、隣接した前空間４００を仕切るともいえる。第１前空間４００ａから第４前空間４００ｄは左右方向に並んで配置される。特に、第１前空間４００ａから第３前空間４００ｃは２つの蓄電池集合体２００に対向して配置されるが、第４前空間４００ｄは１つの蓄電池集合体２００だけに対応して配置される。そのため、第４前空間４００ｄの容積は、第１前空間４００ａから第３前空間４００ｃのそれぞれの容積よりも小さい。また、各前空間４００の下側の部分には１つの前側排気口１１８が設けられる。そのため、１つの前空間４００は１つの前側排気口１１８を有する。 The front space 400 and the rear space 410 will be described in more detail with reference to FIG. 5. In the front space 400, the first front partition wall 242a to the third front partition wall 242c form the first front space 400a to the fourth front space 400d. Is divided into Therefore, it can be said that the front partition walls 242 partition the adjacent front spaces 400. The first front space 400a to the fourth front space 400d are arranged side by side in the left-right direction. In particular, the first front space 400a to the third front space 400c are arranged facing the two storage battery assemblies 200, but the fourth front space 400d is arranged corresponding to only one storage battery assembly 200. Therefore, the volume of the fourth front space 400d is smaller than the volume of each of the first front space 400a to the third front space 400c. Further, one front exhaust port 118 is provided in the lower part of each front space 400. Therefore, one front space 400 has one front exhaust port 118.
　また、後空間４１０は、第１後側隔壁２５２ａから第３後側隔壁２５２ｃによって、第１後空間４１０ａから第４後空間４１０ｄに分割される。そのため、後側隔壁２５２は、隣接した後空間４１０を仕切るともいえる。第１後空間４１０ａから第４後空間４１０ｄは左右方向に並んで配置される。特に、第２後空間４１０ｂから第４後空間４１０ｄは２つの蓄電池集合体２００に対向して配置されるが、第１後空間４１０ａは１つの蓄電池集合体２００だけに対応して配置される。そのため、第１後空間４１０ａの容積は、第２後空間４１０ｂから第４後空間４１０ｄのそれぞれの容積よりも小さい。また、第２後空間４１０ｂから第４後空間４１０ｄのそれぞれの下側の部分には１つの後側排気口１３８が設けられる。 Further, the rear space 410 is divided from the first rear space 410a to the fourth rear space 410d by the first rear partition 252a to the third rear partition 252c. Therefore, it can be said that the rear partition wall 252 partitions the adjacent rear space 410. The first rear space 410a to the fourth rear space 410d are arranged side by side in the left-right direction. In particular, the second rear space 410b to the fourth rear space 410d are arranged facing the two storage battery assemblies 200, but the first rear space 410a is arranged corresponding to only one storage battery assembly 200. Therefore, the volume of the first rear space 410a is smaller than the volume of each of the second rear space 410b to the fourth rear space 410d. Further, one rear exhaust port 138 is provided in the lower portion of each of the second rear space 410b to the fourth rear space 410d.
　図６（ａ）－（ｂ）は、蓄電池モジュール１０００におけるガス５００の排出の概要を示す。図６（ａ）は、蓄電池モジュール１０００の構造を簡略に示す断面図であり、かつ図４と同一方向の断面図である。ここでは、一例として、第１蓄電池セル２１０ａから第８蓄電池セル２１０ｈが下側から上側に向かって並べられる。前述のごとく、これらの蓄電池セル２１０の前側に前空間４００が配置され、前空間４００に接する前側下面１１４に前側排気口１１８が設けられる。 FIGS. 6A and 6B show an outline of the discharge of the gas 500 in the storage battery module 1000. FIG. 6A is a cross-sectional view schematically showing the structure of the storage battery module 1000, and is a cross-sectional view in the same direction as FIG. 4. Here, as an example, the first storage battery cells 210a to the eighth storage battery cells 210h are arranged from the lower side to the upper side. As described above, the front space 400 is arranged on the front side of these storage battery cells 210, and the front exhaust port 118 is provided on the front lower surface 114 in contact with the front space 400.
　第３蓄電池セル２１０ｃにおいて内部短絡等により熱暴走が発生すると、第３蓄電池セル２１０ｃは高温高圧のガス５００を正極２１２側から前側ケース２４０、前側リード板３００経由で前空間４００に放出する。前空間４００に放出されたガス５００は、前面１１２に接触する。前面１１２は、金属板であるので、接触したガス５００から熱を吸収し、蓄電池モジュール１０００の外部に熱を放出する。このようにガス５００は、前面１１２との接触によって熱を奪われ冷やされる。また、冷やされたガス５００は前空間４００内で拡散されるので、ガス５００の圧力は低下する。さらに、温度と圧力が低下したガス５００は、前空間４００の下側に設けられた前側排気口１１８から蓄電池モジュール１０００の外部に放出される。 When thermal runaway occurs in the third storage battery cell 210c due to an internal short circuit or the like, the third storage battery cell 210c releases the high-temperature and high-pressure gas 500 from the positive electrode 212 side to the front space 400 via the front case 240 and the front lead plate 300. The gas 500 released into the front space 400 contacts the front surface 112. Since the front surface 112 is a metal plate, it absorbs heat from the gas 500 with which it comes into contact and radiates heat to the outside of the storage battery module 1000. As described above, the gas 500 is deprived of heat and cooled by the contact with the front surface 112. Further, since the cooled gas 500 is diffused in the front space 400, the pressure of the gas 500 decreases. Further, the gas 500 whose temperature and pressure have dropped is discharged to the outside of the storage battery module 1000 from the front exhaust port 118 provided below the front space 400.
　このようなガス５００の流れによって、第３蓄電池セル２１０ｃからガス５００が放出される際に火花が生じても、冷却・拡散・放出がなされるので、高温燃焼は生じにくくなる。ここで、第４前空間４００ｄの容積は、第１前空間４００ａから第３前空間４００ｃのそれぞれの容積よりも小さい。そのため、蓄電池セル２１０から放出されたガス５００によって、第４前空間４００ｄでの圧力は、それ以外の圧力よりも高くなりやすい。これにより、第４前空間４００ｄを形成している第３前側隔壁２４２ｃは、他の前側隔壁２４２よりも破損されやすくなる。本実施例では、第３前側隔壁２４２ｃの破損を防止するために、第４前空間４００ｄに設けられる第４前側排気口１１８ｄの大きさが、他の前側排気口１１８よりも大きくされる。これにより、第４前空間４００ｄにおける圧力の増加が抑制される。つまり、前空間４００の大きさが小さくなるほど、前側排気口１１８の面積が大きくされる。 Even if a spark is generated when the gas 500 is discharged from the third storage battery cell 210c by such a flow of the gas 500, cooling, diffusion, and discharge are performed, so that high temperature combustion is less likely to occur. Here, the volume of the fourth front space 400d is smaller than the volume of each of the first front space 400a to the third front space 400c. Therefore, the pressure in the fourth front space 400d is likely to be higher than the other pressures due to the gas 500 released from the storage battery cell 210. As a result, the third front partition 242c forming the fourth front space 400d is more easily damaged than the other front partition 242. In the present embodiment, in order to prevent damage to the third front partition 242c, the size of the fourth front exhaust port 118d provided in the fourth front space 400d is made larger than that of the other front exhaust ports 118. This suppresses an increase in pressure in the fourth front space 400d. That is, the smaller the size of the front space 400, the larger the area of the front exhaust port 118.
　仮に、前側排気口１１８が、前側上面１１６に設けられている場合、完全密封でない前空間４００の下部から空気が流入する可能性がある。流入した空気は前側排気口１１８から排出されるので、前空間４００内に下側から上側に向かう空気の流れが生じる。このような空気の流れにより、火花に空気が供給されるので、高温燃焼が生じやすくなる。後空間４１０においても、前空間４００と同様に、ガス５００の冷却・拡散・放出がなされる。 If the front exhaust port 118 is provided on the front upper surface 116, air may flow from the lower portion of the front space 400 that is not completely sealed. Since the inflowing air is discharged from the front exhaust port 118, a flow of air from the lower side to the upper side is generated in the front space 400. Such a flow of air supplies air to the sparks, so that high temperature combustion easily occurs. In the rear space 410 as well, as in the front space 400, the gas 500 is cooled, diffused, and released.
　図６（ｂ）は、図６（ａ）の蓄電池モジュール１０００の比較対象となる蓄電池モジュール２０００の構造を簡略に示す断面図であり、かつ図６（ａ）と同一方向の断面図である。前面２１１２から前側上面２１１６、後面２１３２から後側上面２１３６、蓄電池集合体２２００から負極２２１４、前側ケース２２４０、後側ケース２２５０、前側リード板２３００、後側リード板２３０２、前空間２４００、後空間２４１０は、図６（ａ）の前面１１２から前側上面１１６、後面１３２から後側上面１３６、蓄電池集合体２００から負極２１４、前側ケース２４０、後側ケース２５０、前側リード板３００、後側リード板３０２、前空間４００、後空間４１０と同一である。ここでは、前空間４００に接する前面２１１２のうち、第１蓄電池セル２２１０ａの正極２２１２に対向する部分に、前側排気口２１１８が設けられる。 6B is a cross-sectional view schematically showing the structure of a storage battery module 2000 that is a comparison target of the storage battery module 1000 of FIG. 6A, and is a cross-sectional view in the same direction as FIG. 6A. Front surface 2112 to front upper surface 2116, rear surface 2132 to rear upper surface 2136, storage battery assembly 2200 to negative electrode 2214, front case 2240, rear case 2250, front lead plate 2300, rear lead plate 2302, front space 2400, rear space 2410. 6A, front surface 112 to front upper surface 116, rear surface 132 to rear upper surface 136, storage battery assembly 200 to negative electrode 214, front case 240, rear case 250, front lead plate 300, rear lead plate 302. , The front space 400 and the rear space 410. Here, the front exhaust port 2118 is provided in a portion of the front surface 2112 that is in contact with the front space 400 and that faces the positive electrode 2212 of the first storage battery cell 2210a.
　第１蓄電池セル２２１０ａにおいて内部短絡等により熱暴走が発生すると、第１蓄電池セル２２１０ａは高温高圧のガス２５００を正極２２１２側から前側ケース２２４０、前側リード板２３００経由で前空間２４００に放出する。前空間２４００に放出されたガス２５００は、前側排気口２１１８から蓄電池モジュール２０００の外部に放出される。つまり、ガス２５００には、前面２１１２との接触による冷却がなされない。その際、火花が生じていれば、火花に空気が供給されるので、高温燃焼が生じやすくなる。 When thermal runaway occurs in the first storage battery cell 2210a due to an internal short circuit or the like, the first storage battery cell 2210a discharges the high temperature and high pressure gas 2500 from the positive electrode 2212 side to the front space 2400 via the front case 2240 and the front lead plate 2300. The gas 2500 released to the front space 2400 is released to the outside of the storage battery module 2000 from the front exhaust port 2118. That is, the gas 2500 is not cooled by contact with the front surface 2112. At that time, if a spark is generated, air is supplied to the spark, so that high temperature combustion is likely to occur.
　本実施例によれば、構造体１００の内部に形成された１つの空間は１つの排気口を有するので、蓄電池セル２１０から放出したガス５００を排気口から外部に放出できる。また、１つの空間内のガス５００が１つの排気口から外部に放出されるので、ガス５００を十分に放出できる。また、ガス５００が十分に放出されるので、高温燃焼の発生を抑制できる。また、１つの空間内のガス５００が１つの排気口から外部に放出されるので、空間内への空気の流入を抑制できる。また、空間内への空気の流入が抑制されるので、高温燃焼の発生を抑制できる。 According to the present embodiment, since one space formed inside the structure 100 has one exhaust port, the gas 500 released from the storage battery cell 210 can be released to the outside from the exhaust port. Further, since the gas 500 in one space is discharged to the outside from one exhaust port, the gas 500 can be sufficiently discharged. Further, since the gas 500 is sufficiently released, it is possible to suppress the occurrence of high temperature combustion. Further, since the gas 500 in one space is discharged to the outside from one exhaust port, the inflow of air into the space can be suppressed. Moreover, since the inflow of air into the space is suppressed, the occurrence of high temperature combustion can be suppressed.
　また、異なった集合体において正極２１２の向きが共通であるので、同一方向を向いた複数の蓄電池セル２１０を複数の集合体に分類できる。また、空間を第１空間と第２空間とに分割するので、空間が大きい場合に小さな第１空間と第２空間を形成できる。また、小さな第１空間と第２空間のそれぞれに対して１つの排気口を設けるので、ガス５００を十分に放出できる。また、小さな第１空間と第２空間のそれぞれに対して１つの排気口を設けるので、第１空間内と第２空間内への空気の流入を抑制できる。また、前面１１２は金属板であるので、ガス５００を冷却できる。 Also, since the positive electrodes 212 have the same direction in different assemblies, a plurality of storage battery cells 210 facing the same direction can be classified into a plurality of assemblies. Further, since the space is divided into the first space and the second space, when the space is large, the small first space and second space can be formed. Further, since one exhaust port is provided for each of the small first space and second space, the gas 500 can be sufficiently discharged. Further, since one exhaust port is provided for each of the small first space and the second space, it is possible to suppress the inflow of air into the first space and the second space. Further, since the front surface 112 is a metal plate, the gas 500 can be cooled.
　また、異なった集合体において正極２１２の向きが逆であるので、複数の蓄電池セル２１０の方向に応じて複数の集合体を形成できる。また、空間を第１空間と第２空間とに分割するので、蓄電池集合体２００を挟んで反対側に第１空間と第２空間を形成できる。また、第１空間と第２空間のそれぞれに対して１つの排気口を設けるので、ガス５００を十分に放出できる。また、第１空間と第２空間のそれぞれに対して１つの排気口を設けるので、第１空間内と第２空間内への空気の流入を抑制できる。また、前面１１２と後面１３２は金属板であるので、ガス５００を冷却できる。 Moreover, since the directions of the positive electrodes 212 in the different assemblies are opposite, a plurality of assemblies can be formed according to the directions of the plurality of storage battery cells 210. Moreover, since the space is divided into the first space and the second space, the first space and the second space can be formed on the opposite sides of the storage battery assembly 200. Moreover, since one exhaust port is provided for each of the first space and the second space, the gas 500 can be sufficiently discharged. Further, since one exhaust port is provided for each of the first space and the second space, it is possible to suppress the inflow of air into the first space and the second space. Further, since the front surface 112 and the rear surface 132 are metal plates, the gas 500 can be cooled.
　本開示の一態様の概要は、次の通りである。本開示のある態様の蓄電池モジュール１０００は、互いに反対を向いた第１の電極と第２の電極とを有する蓄電池セル２１０が、第１の電極を同一方向に向けて複数配置される蓄電池集合体２００と、蓄電池集合体２００における複数の第１の電極に対向する第１面と、蓄電池集合体２００における複数の第２の電極に対向する第２面と、第１面と第２面とに交差しながら蓄電池集合体２００を挟んで互いに対向する第３面と第４面とを含む構造体１００とを備える。構造体１００には、蓄電池集合体２００における複数の第１の電極側の面と第１面と第３面と第４面とに囲まれる空間が形成され、構造体１００は、空間のうち、蓄電池集合体２００における第３面側端の蓄電池セル２１０よりも第３面側に位置する第１面の部分、あるいは第３面に排気口を備える。１つの空間は１つの排気口を有する。 The outline of one aspect of the present disclosure is as follows. A storage battery module 1000 according to an aspect of the present disclosure is a storage battery assembly in which a plurality of storage battery cells 210 each having a first electrode and a second electrode facing each other are arranged with the first electrodes facing the same direction. 200, a first surface of the storage battery assembly 200 that faces the plurality of first electrodes, a second surface of the storage battery assembly 200 that faces the plurality of second electrodes, and a first surface and a second surface. The structure 100 includes a third surface and a fourth surface that are opposed to each other with the storage battery assembly 200 sandwiched therebetween. In the structure 100, a space surrounded by a plurality of surfaces of the storage battery assembly 200 on the side of the first electrode, the first surface, the third surface, and the fourth surface is formed. An exhaust port is provided on a portion of the first surface of the storage battery assembly 200 that is located on the third surface side of the end of the third surface on the third surface side, or on the third surface. One space has one exhaust port.
　蓄電池集合体２００は、第１の電極が正極２１２であり、かつ第２の電極が負極２１４である複数の蓄電池セル２１０を含む第１集合体と、第１の電極が正極２１２であり、かつ第２の電極が負極２１４である複数の蓄電池セル２１０を含む第２集合体とを含む。 In the storage battery assembly 200, a first assembly including a plurality of storage battery cells 210 in which the first electrode is the positive electrode 212 and the second electrode is the negative electrode 214, the first electrode is the positive electrode 212, and The second assembly includes a plurality of storage battery cells 210 in which the second electrode is the negative electrode 214.
　構造体１００に形成される空間は、第１集合体における複数の第１の電極側の面と第１面と第３面と第４面とに囲まれる第１空間と、第２集合体における複数の第１の電極側の面と第１面と第３面と第４面とに囲まれる第２空間とを含んでもよい。排気口は、第１空間のうち、第１集合体における第３面側端の蓄電池セル２１０よりも第３面側に位置する第１面の部分、あるいは第３面に配置される第１排気口と、第２空間のうち、第２集合体における第３面側端の蓄電池セル２１０よりも第３面側に位置する第１面の部分、あるいは第３面に配置される第２排気口とを含んでもよい。本蓄電池モジュール１０００は、第１空間と第２空間とを仕切る隔壁をさらに備える。 The space formed in the structure 100 includes a first space surrounded by a plurality of first electrode-side surfaces of the first assembly, a first surface, a third surface, and a fourth surface, and a space in the second assembly. It may include a second space surrounded by a plurality of first electrode-side surfaces, a first surface, a third surface, and a fourth surface. The exhaust port is a portion of the first surface located on the third surface side of the end of the first assembly on the third surface side of the first assembly in the first space, or the first exhaust gas disposed on the third surface. Mouth, and a second exhaust port arranged on the third surface of the second space on the third surface side of the end of the second assembly closer to the third surface than the storage battery cell 210. May include and. The storage battery module 1000 further includes a partition wall that partitions the first space and the second space.
　第１空間は、１つの第１排気口を有してもよい。第２空間は、１つの第２排気口を有する。 The first space may have one first exhaust port. The second space has one second exhaust port.
　第１面は金属板である。 The first surface is a metal plate.
　蓄電池集合体２００は、第１の電極が正極２１２であり、かつ第２の電極が負極２１４である複数の蓄電池セル２１０を含む第１集合体と、第１の電極が負極２１４であり、かつ第２の電極が正極２１２である複数の蓄電池セル２１０を含む第２集合体とを含む。 The storage battery assembly 200 includes a first assembly including a plurality of storage battery cells 210 in which the first electrode is the positive electrode 212 and the second electrode is the negative electrode 214, and the first electrode is the negative electrode 214, and The second electrode includes a plurality of storage battery cells 210 each having a positive electrode 212.
　構造体１００には、第１集合体における複数の第１の電極側の面と第１面と第３面と第４面とに囲まれる第１空間と、第２集合体における複数の第２の電極側の面と第２面と第３面と第４面とに囲まれる第２空間とが形成され、構造体１００は、第１空間のうち、第１集合体における第３面側端の蓄電池セル２１０よりも第３面側に位置する第１面の部分、あるいは第３面に第１排気口を備え、第２空間のうち、第２集合体における第３面側端の蓄電池セル２１０よりも第３面側に位置する第２面の部分、あるいは第３面に第２排気口を備える。 The structure body 100 includes a first space surrounded by a plurality of first electrode-side surfaces of the first assembly, a first surface, a third surface, and a fourth surface, and a plurality of second spaces in the second assembly. A second space surrounded by the electrode-side surface, the second surface, the third surface, and the fourth surface is formed, and the structure 100 is the third surface-side end of the first aggregate in the first space. Of the first surface located on the third surface side of the storage battery cell 210 or the third exhaust surface is provided with the first exhaust port, and the storage battery cell at the third surface side end of the second assembly in the second space. A second exhaust port is provided on a portion of the second surface located closer to the third surface than 210, or on the third surface.
　第１空間は、１つの第１排気口を有してもよい。第２空間は、１つの第２排気口を有する。 The first space may have one first exhaust port. The second space has one second exhaust port.
　第１面と第２面は金属板である。 First and second sides are metal plates.
　排気口は１つの開口から構成される。 　The exhaust port consists of one opening.
　排気口は複数の開口から構成される。 　The exhaust port consists of multiple openings.
　以上、本開示を実施例をもとに説明した。この実施例は例示であり、それらの各構成要素あるいは各処理プロセスの組合せにいろいろな変形例が可能なこと、またそうした変形例も本開示の範囲にあることは当業者に理解されるところである。 Above, the present disclosure has been described based on the embodiments. It should be understood by those skilled in the art that this embodiment is an exemplification, and that various modifications can be made to the combinations of the respective constituent elements or the respective processing processes, and that such modifications are also within the scope of the present disclosure. ..
　本実施例において、前空間４００と後空間４１０とが形成される。しかしながらこれに限らず例えば、前空間４００と後空間４１０の一方だけが形成されてもよい。本変形例によれば、すべての蓄電池セル２１０が同一方向を向いて配置されている場合に、配置に適した空間を形成できる。 In this embodiment, a front space 400 and a rear space 410 are formed. However, not limited to this, for example, only one of the front space 400 and the rear space 410 may be formed. According to this modification, when all the storage battery cells 210 are arranged in the same direction, a space suitable for arrangement can be formed.
　本実施例において、複数の前空間４００が並べられる。しかしながらこれに限らず例えば、前空間４００の数は１つでもよい。本変形例によれば、前空間４００のサイズが小さい場合に構造を簡易にできる。また、後空間４１０についても同様である。 In this embodiment, a plurality of front spaces 400 are arranged. However, the number of the front spaces 400 is not limited to this, and may be one, for example. According to this modification, the structure can be simplified when the size of the front space 400 is small. The same applies to the rear space 410.
　本実施例において、前側隔壁２４２、後側隔壁２５２は、樹脂等により形成されている。しかしながらこれに限らず例えば、樹脂等により形成された前側隔壁２４２、後側隔壁２５２は、前空間４００あるいは後空間４１０側から金属板等によって補強されてもよい。本変形例によれば、発生したガス５００の圧力が高くなっても、前側隔壁２４２、後側隔壁２５２を破損しにくくできる。 In this embodiment, the front partition 242 and the rear partition 252 are made of resin or the like. However, the invention is not limited to this, and for example, the front partition wall 242 and the rear partition wall 252 formed of resin or the like may be reinforced by a metal plate or the like from the front space 400 or the rear space 410 side. According to the present modification, even if the pressure of the generated gas 500 increases, the front partition 242 and the rear partition 252 can be less likely to be damaged.
　本実施例において、排気口は１つの開口から構成されている。しかしながらこれに限らず例えば、排気口は複数の開口から構成されてもよい。そのような場合、各開口は、１つの開口から気体が排出されたときに、他の開口から気体が流入しない程度に隣接して配置される。本変形例によれば、構造の自由度を向上できる。 In this embodiment, the exhaust port is composed of one opening. However, not limited to this, for example, the exhaust port may be configured by a plurality of openings. In such a case, the openings are arranged adjacent to each other so that when the gas is discharged from one opening, the gas does not flow from the other opening. According to this modification, the degree of freedom of structure can be improved.
　本開示によれば、熱暴走電池の高温燃焼による隣接電池の熱暴走（類焼）を抑制できる。 According to the present disclosure, thermal runaway (similar burning) of an adjacent battery due to high temperature combustion of the thermal runaway battery can be suppressed.
　１００　構造体、　１１０　前側筐体、　１１２　前面（第１面）、　１１４　前側下面（第３面）、　１１６　前側上面（第４面）、　１１８　前側排気口（排気口）、　１３０　後側筐体、　１３２　後面（第２面）、　１３４　後側下面（第３面）、　１３６　後側上面（第４面）、　１３８　後側排気口（排気口）、　１５０　左側面、　１５２　右側面、　２００　蓄電池集合体（第１集合体、第２集合体））、　２１０　蓄電池セル、　２１２　正極（第１の電極、第２の電極）、　２１４　負極（第１の電極、第２の電極）、　２３０　電池ホルダ、　２４０　前側ケース、　２４２　前側隔壁、　２４４　前側ケース板部、　２４６　前側凹部、　２５０　後側ケース、　２５２　後側隔壁、　２５４　後側ケース板部、　２５６　後側凹部、　３００　前側リード板、　３０２　後側リード板、　３３０　制御基板トレイ、　３３２　制御基板、　３３４　制御基板蓋、　３５０　左側蓋、　３５２　右側蓋、　４００　前空間、　４１０　後空間、　１０００　蓄電池モジュール。 100 structure, 110 front housing, 112 front surface (first surface), 114 front lower surface (third surface), 116 front upper surface (fourth surface), 118 front exhaust port (exhaust port), 130 rear housing, 132 rear surface (second surface), 134 rear lower surface (third surface), 136 rear upper surface (fourth surface), 138 rear exhaust port (exhaust port), 150 left side surface, 152 right side surface, 200 storage battery assembly (First aggregate, second aggregate)), 210 storage battery cell, 212 positive electrode (first electrode, second electrode), 214 negative electrode (first electrode, second electrode), 230 battery holder, 240 Front case, 242 front partition, 244 front case plate, 246 front recess, 250 rear case, 252 rear partition, 254 rear case plate, 256 rear recess, 300 front lead plate, 302 rear lead plate, 330 control board tray, 332 control board, 334 control board lid, 350 left side lid, 352 right side lid, 400 front space, 410 rear space, 1000 storage battery module.

Claims (11)

  1. 　互いに反対を向いた第１の電極と第２の電極とを有する蓄電池セルが、前記第１の電極を同一方向に向けて複数配置される蓄電池集合体と、
    　前記蓄電池集合体における複数の前記第１の電極に対向する第１面と、前記蓄電池集合体における複数の前記第２の電極に対向する第２面と、前記第１面と前記第２面とに交差しながら前記蓄電池集合体を挟んで互いに対向する第３面と第４面とを含む構造体とを備え、
    　前記構造体には、前記蓄電池集合体における複数の前記第１の電極側の面と前記第１面と前記第３面と前記第４面とに囲まれる空間が形成され、
    　前記構造体は、前記空間のうち、前記蓄電池集合体における前記第３面側端の前記蓄電池セルよりも前記第３面側に位置する前記第１面の部分、あるいは前記第３面に排気口を備え、
    　１つの前記空間は１つの前記排気口を有する、
    　蓄電池モジュール。     A storage battery assembly in which a plurality of storage battery cells having first electrodes and second electrodes facing each other are arranged with the first electrodes facing the same direction,
    A first surface of the storage battery assembly facing the plurality of first electrodes, a second surface of the storage battery assembly facing the plurality of second electrodes, the first surface and the second surface A structure including a third surface and a fourth surface facing each other across the storage battery assembly while intersecting with each other,
    A space surrounded by a plurality of surfaces of the storage battery assembly on the side of the first electrode, the first surface, the third surface, and the fourth surface is formed in the structure,
    In the structure, the structure has a portion of the first surface located on the third surface side of the storage battery assembly at the end of the storage battery assembly on the third surface side, or an exhaust port on the third surface. Equipped with
    One said space has one said exhaust port,
    Storage battery module.
  2. 　前記蓄電池集合体は、前記第１の電極が正極であり、かつ前記第２の電極が負極である複数の蓄電池セルを含む第１集合体と、前記第１の電極が正極であり、かつ前記第２の電極が負極である複数の蓄電池セルを含む第２集合体とを含む、
    　請求項１に記載の蓄電池モジュール。     In the storage battery assembly, the first electrode includes a plurality of storage battery cells in which the first electrode is a positive electrode and the second electrode is a negative electrode, and the first electrode is a positive electrode, and A second assembly including a plurality of storage battery cells in which the second electrode is a negative electrode,
    The storage battery module according to claim 1.
  3. 　前記構造体に形成される空間は、前記第１集合体における複数の前記第１の電極側の面と前記第１面と前記第３面と前記第４面とに囲まれる第１空間と、前記第２集合体における複数の前記第１の電極側の面と前記第１面と前記第３面と前記第４面とに囲まれる第２空間とを含み、
    　前記排気口は、前記第１空間のうち、前記第１集合体における前記第３面側端の前記蓄電池セルよりも前記第３面側に位置する前記第１面の部分、あるいは前記第３面に配置される第１排気口と、前記第２空間のうち、前記第２集合体における前記第３面側端の前記蓄電池セルよりも前記第３面側に位置する前記第１面の部分、あるいは前記第３面に配置される第２排気口とを含み、
    　本蓄電池モジュールは、
    　前記第１空間と前記第２空間とを仕切る隔壁をさらに備える、
    　請求項２に記載の蓄電池モジュール。     The space formed in the structure is a first space surrounded by the plurality of first electrode-side surfaces of the first assembly, the first surface, the third surface, and the fourth surface, A second space surrounded by a plurality of surfaces on the first electrode side of the second assembly, the first surface, the third surface, and the fourth surface;
    The exhaust port is a portion of the first surface that is located on the third surface side of the storage battery cell at the third surface side end of the first assembly in the first space, or the third surface. A portion of the first surface located closer to the third surface than the storage battery cell at the third surface side end of the second assembly in the second space, Or a second exhaust port disposed on the third surface,
    This storage battery module is
    A partition wall for partitioning the first space and the second space is further provided.
    The storage battery module according to claim 2.
  4. 　前記第１空間は、１つの前記第１排気口を有し、
    　前記第２空間は、１つの前記第２排気口を有する、
    　請求項３に記載の蓄電池モジュール。     The first space has one of the first exhaust ports,
    The second space has one second exhaust port,
    The storage battery module according to claim 3.
  5. 　前記第１面は金属板である、
    　請求項１から４のいずれか１項に記載の蓄電池モジュール。     The first surface is a metal plate,
    The storage battery module according to any one of claims 1 to 4.
  6. 　前記蓄電池集合体は、前記第１の電極が正極であり、かつ前記第２の電極が負極である複数の蓄電池セルを含む第１集合体と、前記第１の電極が負極であり、かつ前記第２の電極が正極である複数の蓄電池セルを含む第２集合体とを含む、
    　請求項１に記載の蓄電池モジュール。     The storage battery assembly includes a first assembly including a plurality of storage battery cells in which the first electrode is a positive electrode and the second electrode is a negative electrode, and the first electrode is a negative electrode, and A second assembly including a plurality of storage battery cells in which the second electrode is a positive electrode,
    The storage battery module according to claim 1.
  7. 　前記構造体には、前記第１集合体における複数の前記第１の電極側の面と前記第１面と前記第３面と前記第４面とに囲まれる第１空間と、前記第２集合体における複数の前記第２の電極側の面と前記第２面と前記第３面と前記第４面とに囲まれる第２空間とが形成され、
    　前記構造体は、前記第１空間のうち、前記第１集合体における前記第３面側端の前記蓄電池セルよりも前記第３面側に位置する前記第１面の部分、あるいは前記第３面に第１排気口を備え、前記第２空間のうち、前記第２集合体における前記第３面側端の前記蓄電池セルよりも前記第３面側に位置する前記第２面の部分、あるいは前記第３面に第２排気口を備える、
    　請求項６に記載の蓄電池モジュール。     The structure includes a first space surrounded by a plurality of surfaces on the first electrode side of the first assembly, the first surface, the third surface, and the fourth surface, and the second assembly. A second space surrounded by a plurality of surfaces on the second electrode side of the body, the second surface, the third surface, and the fourth surface is formed,
    In the first space, the structure is a portion of the first surface located closer to the third surface than the storage battery cell at the third surface side end of the first assembly, or the third surface. A portion of the second surface of the second space located on the third surface side of the storage battery cells at the end of the second assembly in the second space, or A second exhaust port is provided on the third surface,
    The storage battery module according to claim 6.
  8. 　前記第１空間は、１つの前記第１排気口を有し、
    　前記第２空間は、１つの前記第２排気口を有する、
    　請求項７に記載の蓄電池モジュール。     The first space has one of the first exhaust ports,
    The second space has one second exhaust port,
    The storage battery module according to claim 7.
  9. 　前記第１面と前記第２面は金属板である、
    　請求項６から８のいずれか１項に記載の蓄電池モジュール。     The first surface and the second surface are metal plates,
    The storage battery module according to any one of claims 6 to 8.
  10. 　前記排気口は１つの開口から構成される、
    　請求項１に記載の蓄電池モジュール。     The exhaust port is composed of one opening,
    The storage battery module according to claim 1.
  11. 　前記排気口は複数の開口から構成される、
    　請求項１に記載の蓄電池モジュール。     The exhaust port is composed of a plurality of openings,
    The storage battery module according to claim 1.
PCT/JP2019/046101 2018-12-11 2019-11-26 Storage battery module WO2020121802A1 (en)

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