WO2013001585A1 - Support de piles - Google Patents

Support de piles Download PDF

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Publication number
WO2013001585A1
WO2013001585A1 PCT/JP2011/007173 JP2011007173W WO2013001585A1 WO 2013001585 A1 WO2013001585 A1 WO 2013001585A1 JP 2011007173 W JP2011007173 W JP 2011007173W WO 2013001585 A1 WO2013001585 A1 WO 2013001585A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery module
transfer member
heat transfer
battery
unit cells
Prior art date
Application number
PCT/JP2011/007173
Other languages
English (en)
Japanese (ja)
Inventor
俊樹 糸井
永山　雅敏
安井　俊介
大輔 岸井
Original Assignee
パナソニック株式会社
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
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2013001585A1 publication Critical patent/WO2013001585A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/578—Devices or arrangements for the interruption of current in response to pressure
    • 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 invention relates to a battery module, and more particularly to a battery module in which a plurality of batteries are stored in a storage container and electrically connected in parallel to each other.
  • lithium ion secondary batteries are characterized by high electromotive force and high energy density while being lightweight. For this reason, the demand for lithium ion secondary batteries as driving power sources for many types of mobile communication devices and portable electronic devices such as mobile phones, digital cameras, video cameras, and notebook computers is increasing.
  • the battery pack is configured by mounting a plurality of battery modules including one or more batteries.
  • Patent Document 1 discloses a configuration having a pattern wiring in which the batteries are connected to each other and wiring for detecting the voltage or temperature of each battery is formed on a printed circuit board. Yes. With such a configuration, it is not necessary to newly provide a lead wire or the like for detecting a voltage or the like connected to each battery, so that the size can be reduced.
  • Patent Document 2 discloses a battery pack in which a plurality of power supply modules are housed in a holder case and connected via an end plate. In Patent Document 2, it is said that the connection failure can be reduced and the size can be reduced by providing the end plate with a sensor lead and a power supply lead for connecting the power supply modules.
  • a battery is provided with a vent mechanism or a safety valve for venting gas to release internal gas. At this time, the exhausted gas may react with oxygen and burn, which has a problem in reliability and safety.
  • the battery module shown in Patent Document 3 is provided with an opening on the partition wall of the case so as to face the safety valve of the battery, and the ejected gas is discharged outside without filling the battery chamber.
  • the discharge of the ejected gas is described, there is no disclosure or suggestion of preventing combustion due to the reaction between oxygen and gas. For this reason, when combustion of gas occurs, it is unclear how to prevent combustion in the partition wall.
  • a combustion prevention device or the like is arranged, there arises a problem that the battery module cannot be reduced in size.
  • the present invention has been made in view of the above-mentioned problems, and its main purpose is to realize miniaturization and thinning, and to minimize the influence on the surrounding batteries due to the malfunction of the defective battery.
  • An object of the present invention is to provide a battery module capable of satisfying the requirements.
  • the battery module of the present invention includes a plurality of unit cells each having an open part for discharging gas generated inside the battery, and a plurality of cylindrical storage units for storing the plurality of unit cells.
  • a ventilation path parallel to the axial direction of the storage section is provided between the plurality of storage sections, and one end side of the ventilation path communicates with the internal space and the other end side communicates with the outside.
  • the battery module of the present invention further includes an electrode connection body that electrically connects the electrode portions of the plurality of unit cells, and the electrode connection body is provided so as to be in close contact with the plurality of unit cells, and includes a plurality of storage units. Each of these is preferably sealed.
  • This configuration can prevent an abnormal battery from affecting the surrounding batteries.
  • the battery module of the present invention it is possible to prevent the high temperature gas from being ejected from the battery module even when a situation in which the high temperature gas is ejected from the battery occurs while suppressing an increase in the size and weight of the battery module.
  • a high battery module can be obtained.
  • FIG. 1 is a cross-sectional view showing a unit cell used in a battery module according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view showing the configuration of the battery module according to the embodiment of the present invention.
  • FIG. 3 is a perspective view showing a battery module according to an embodiment of the present invention.
  • FIG. 4A is a perspective view showing an example of a heat transfer member of a battery module according to an embodiment of the present invention
  • FIG. 4B is a perspective view showing an example of a heat transfer member in which a unit cell is accommodated. It is.
  • FIG. 5A is a perspective view showing another example of the heat transfer member of the battery module according to the embodiment of the present invention, and FIG.
  • FIG. 5B is another example of the heat transfer member in which the unit cell is accommodated.
  • FIG. FIG. 6A is a plan view showing a heat transfer member in which a unit cell of the battery module according to the embodiment of the present invention is housed, and FIG. 6B shows a positive electrode on the heat transfer member of FIG. It is a top view which shows the structure in which the connection body for operation was provided.
  • FIG. 7 is a cross-sectional view showing a battery module according to an embodiment of the present invention.
  • FIG. 8 is a schematic view showing a temperature lowering mechanism of the battery module according to one embodiment of the present invention.
  • FIG. 1 is a cross-sectional view showing a unit cell used in a battery module according to an embodiment of the present invention.
  • the battery module of the present embodiment is configured as an assembly including a plurality of unit cells arranged and a plurality of unit cells and a heat transfer member for storing the unit cells.
  • a cylindrical lithium ion secondary battery can be adopted as the unit cell constituting the battery module according to the present embodiment.
  • This lithium ion secondary battery may be a general-purpose battery used as a power source for portable electronic devices such as notebook computers.
  • a high-performance general-purpose battery can be used as a unit cell of the battery module, it is possible to easily improve the performance and cost of the battery module.
  • the unit cell is provided with a safety mechanism that releases gas to the outside of the battery when the pressure in the battery increases due to an internal short circuit or the like.
  • the unit cell used in the present embodiment is not limited to the shape and type described above, and may be, for example, a square battery or the like, or a nickel hydrogen battery or the like.
  • the unit cell 100 which comprises the battery module which concerns on this embodiment has the electrode group 4 by which the positive electrode plate 1 and the negative electrode plate 2 were wound through the separator 3 with a non-aqueous electrolyte.
  • the battery case 7 is housed. Insulating plates 9, 10 are arranged above and below the electrode group 4, the positive electrode plate 1 is joined to the filter 12 via the positive electrode lead 5, and the negative electrode plate 2 serves as the negative electrode terminal via the negative electrode lead 6. It is joined to the bottom of the case 7.
  • the filter 12 is connected to an inner cap 13, and the protrusion of the inner cap 13 is joined to a metal valve body 14. Further, the valve body 14 is connected to a terminal plate 8 that also serves as a positive electrode terminal, and the terminal plate 8 has an open portion 8a.
  • the terminal plate 8, the valve body 14, the inner cap 13 and the filter 12 are integrated, and the opening of the battery case 7 is sealed via the gasket 11.
  • valve body 14 When an internal short circuit or the like occurs in the unit cell 100 and the pressure in the unit cell 100 increases, the valve body 14 swells toward the terminal plate 8 and the inner cap 13 and the valve body 14 are disconnected from each other. Is cut off. When the pressure in the unit cell 100 further increases, the valve body 14 is broken. Thereby, the gas generated in the unit cell 100 is discharged to the outside through the through hole 12 a of the filter 12, the through hole 13 a of the inner cap 13, the tear of the valve body 14, and the opening 8 a of the terminal plate 8.
  • safety mechanism for discharging the gas generated in the unit cell 100 to the outside as described above is not limited to the structure shown in FIG. 1, but may be another structure.
  • FIG. 2 is an exploded perspective view showing the configuration of the battery module according to one embodiment of the present invention
  • FIG. 3 is a perspective view showing the configuration of the battery module according to one embodiment of the present invention.
  • the battery module 200 includes a plurality (20 in FIG. 2) of unit cells 100, a heat transfer member 220, a positive electrode side holder 250, a negative electrode side holder 260, and a positive electrode.
  • the connecting member (electrode connecting member) 230, the negative electrode connecting member 240, and the lid 270 are configured.
  • the plurality of unit cells 100 are housed in the housing portion 222 of the heat transfer member 220 so that the open portion 8a of the terminal plate 8, that is, the positive electrode faces the same direction (upward in FIG. 2).
  • the negative electrode connector 240 is welded to the negative electrodes of the plurality of unit cells 100 with the negative electrode side holder 260 sandwiched between the negative electrodes of the unit cells 100.
  • the positive electrode connection body 230 is welded to the positive electrodes of the plurality of unit cells 100 across the positive electrode side holder 250 on the positive electrode side of the unit cell 100, and the unit cell 100 that is exposed from the storage unit 222 by the lid 270 is opened.
  • the internal space (exhaust chamber) is formed between the positive electrode connection body 230 and the lid body 270 so as to cover the portion 8 a and the positive electrode connection body 230.
  • the positive electrode side holder 250 and the negative electrode side holder 260 are fixed with screws 280 from above and below the battery module 200.
  • a battery module 200 in which all the components are combined is obtained.
  • the unit cells 100 are not visible from the outside.
  • the positive electrode output terminal 232 at the end of the positive electrode connection body 230 and the negative electrode output terminal 242 at the end of the negative electrode connection body 240 are exposed to the outside of the battery module 200 in order to take out current from the battery module 200. It has a structure.
  • FIG. 4A is a perspective view showing an example of a heat transfer member of a battery module according to an embodiment of the present invention
  • FIG. 4B is a perspective view showing an example of a heat transfer member in which a unit cell is accommodated.
  • FIG. 5 (a) is a perspective view showing another example of the heat transfer member of the battery module according to the embodiment of the present invention
  • FIG. 5 (b) shows another heat transfer member in which the unit cell is housed.
  • FIG.6 (a) is a top view which shows the heat-transfer member in which the unit cell of the battery module which concerns on one Embodiment of this invention was accommodated
  • FIG.6 (b) is the heat-transfer member of Fig.6 (a). It is a top view which shows the structure by which the connection body for positive electrodes was provided.
  • FIG. 7 is a cross-sectional view showing a battery module according to an embodiment of the present invention.
  • the heat transfer member 220 is formed with a plurality of cylindrical storage portions 222 that store the unit cells 100.
  • the “cylindrical shape” refers to a shape having a hollow portion in the axial direction, and its cross-sectional shape is not particularly limited, and includes, for example, a circle, an ellipse, a quadrangle, and the like. That is, the shape of the storage portion 222 can be determined as appropriate according to the shape of the unit cell 100 to be stored.
  • the cylindrical storage unit 222 is used because the cylindrical unit cell 100 is used. The shape is not limited to this, and any shape that can accommodate the unit cell 100 may be used.
  • the storage unit 222 has an inner diameter that is about 0.2 mm larger than the outer diameter of the unit cell 100 in order to store the cylindrical unit cell 100, and is arranged in a hexagonal close-packed lattice shape. Furthermore, the heat transfer member 220 is formed with a ventilation path 221 that is a through hole parallel to the axial direction of the storage portion 222. The air passage 221 is disposed at the center of gravity of the three storage portions 222 adjacent to each other.
  • the unit cell 100 is a battery having a size of, for example, “18650” (the outer diameter is 18.2 mm at the maximum and the height is 65 mm)
  • the storage unit 222 has a length of 55 mm.
  • the inner diameter of 222 is 18.4 mm.
  • the heat transfer member 220 has a structure in which the housing portion 222 and the air passage 221 passing through the block made of metal or the like are formed.
  • a heat transfer member 225 having a structure in which the side surfaces of the plurality of cylindrical members 226 are connected by welding or the like may be used.
  • the unit cell 100 is stored in each of the storage portions 227 that are cavities of the plurality of cylindrical members 226.
  • the heat transfer member 225 has, for example, 20 cylindrical members 226 each having a plate thickness of 0.4 mm, an inner diameter of 18.4 mm, and a height of 55 mm arranged in a hexagonal close-packed lattice.
  • the heat transfer member 225 can have the ventilation path 228 in the gravity center of the three cylindrical members 226 (housing part 227) adjacent to each other.
  • the air passage 221 is arranged around the unit cell 100 at intervals of 60 °.
  • the unit cell 100 surrounded by six other unit cells 100 has a structure in which six air passages 221 are arranged around the unit cell 100.
  • the positive electrode connector 230 is connected to the positive electrode side via the positive electrode side holder 250 with respect to the heat transfer member 220 containing the plurality of unit cells 100.
  • the negative electrode connector 240 is combined with the negative electrode side holder 260 on the side.
  • a lid 270 is provided so as to cover the positive electrode connection body 230, and an internal space 271 surrounded by the positive electrode connection body 230 and the lid body 270 is formed.
  • the positive electrode side holder 250, the positive electrode connection body 230, the negative electrode side holder 260, and the negative electrode connection body 240 are combined with the heat transfer member 220 at the same position as the air passage 221, and through holes 254, 233 having the same size. 262 and 243, respectively. For this reason, the battery module 200 has a hole communicating from the positive electrode connector 230 to the negative electrode connector 240.
  • the positive electrode side holder 250 and the negative electrode side holder 260 when combined with the heat transfer member 220, have a concave portion having the same size and the same size at the same position as the housing portion 222, and a slightly smaller opening at the bottom of the concave portion. Has a part.
  • the positive electrode connection body 230 and the negative electrode connection body 240 are electrically connected to the unit cell 100 by disposing the positive electrode connection terminal 231 and the negative electrode connection terminal 241 at the same position as the housing portion 222.
  • the positive electrode connection body 230 has an opening 234 that communicates with the open portion 8 a of the unit cell 100 around the positive electrode connection terminal 231.
  • the open part 8 a of the unit cell 100 communicates with the internal space 271 through the opening 234, and the high temperature gas from the open part 8 a is released into the internal space 271.
  • the positive electrode connection body 230 is provided so as to be in close contact with each of the unit cells 100 via the positive electrode side holder 250, and seals the storage portion 222.
  • the sealing here does not necessarily mean a completely sealed state, but includes a state in which a gas that does not affect the unit cell 100 enters the storage unit 222.
  • the positive electrode connection body 230 made of a conductor is used, the insulating positive electrode side is provided so that the positive electrode connection body 230 and the negative electrode (battery case 7) of the unit cell 100 are not short-circuited.
  • the positive electrode connector 230 is in close contact with the unit cell 100 through the holder 250.
  • the configuration is not limited to this as long as the positive electrode connector 230 and the negative electrode (battery case 7) of the unit cell 100 can prevent a short circuit.
  • the positive electrode connection body 230 may be formed by forming a wiring pattern for connecting the positive electrodes of the plurality of unit cells 100 in parallel on an insulating wiring board.
  • the positive electrode side holder 250 is not provided. It doesn't matter.
  • the storage unit 222 is hermetically sealed, so that the high-temperature gas released from the abnormal unit cell 100 does not enter the surrounding normal unit cell 100 and the normal unit cell 100 generates heat or the like. Can be prevented.
  • the unit cell 100 since the unit cell 100 has the open part 8a that discharges the high-temperature gas only on the positive electrode side, there is no need to provide an opening in the negative electrode connector 240, but the positive electrode connector 230 and the negative electrode It is also possible to use the connecting member 240 for the same part.
  • FIG. 8 is a schematic view showing a temperature lowering mechanism of the battery module according to this embodiment.
  • a high temperature gas of 700 ° C. to 1000 ° C. is discharged from the open portion 8a in the terminal plate 8 on the positive electrode side of the unit cell 100x.
  • the high-temperature gas discharged from the open portion 8 a passes through the opening 234 of the positive electrode connection body 230 and is discharged into the internal space 271 surrounded by the positive electrode connection body 230 and the lid body 270. Since the volume of the internal space 271 does not allow all of the released high temperature gas to enter, the high temperature gas released to the internal space 271 passes through the communicating passage 221 and the through holes 233, 254, 262, 243, respectively. Then, it is pushed out from the negative electrode connector 240 side (downward in the figure). In FIG. 8, the direction in which the hot gas flows is indicated by an arrow.
  • the air passage 221 and the through holes 233, 254, 262, and 243 do not have an opening area sufficient to discharge the discharge amount of the high-temperature gas discharged from the unit cell 100x per unit time, so that quick discharge is possible. Can not. For this reason, the hot gas is discharged while contacting the inner wall of the air passage 221 of the heat transfer member 220.
  • the heat transfer member 220 absorbs heat of the high temperature gas at 700 ° C. to 1000 ° C.
  • the internal space 271 has a pressure higher than the atmospheric pressure, and air does not flow in from the outside. No heat is generated by combustion.
  • the air passage 221 does not have an opening area sufficient to discharge the discharge amount of the hot gas per unit time, the hot gas gradually moves to the atmospheric pressure as it flows through the discharge passage such as the air passage 221. The pressure will drop. At this time, the temperature of the hot gas decreases due to adiabatic expansion. For these reasons, the hot gas is cooled to about 300 ° C. when discharged from the through hole 243 of the negative electrode connector 240 to the outside.
  • the temperature of the high temperature gas decreases to about 300 ° C. while passing through the air passage 221.
  • the positive electrode connector 230 is provided so as to be in close contact with the plurality of unit cells 100 and the plurality of storage units 222 are sealed, so that the high temperature gas is introduced from the unit cell 100x in which an abnormality has occurred. Even if released into the space 271, the hot gas can be prevented from entering the other normal unit cell 100, and the normal unit cell 100 can be prevented from being affected by heat generation or the like.
  • the air passage 221 of the heat transfer member 220 has a long and narrow shape in order to lower the temperature while allowing the generated high temperature gas to pass therethrough.
  • the length of the air passage 221 is desirably 20 times or more the shortest distance from the center point of the opening cross section of the air passage 221 to the inner wall.
  • the “center point” means a point farthest from the inner wall of the air passage 221 and is a point where heat is most difficult to be transmitted to the heat transfer member 220. In this way, the high temperature gas released from the unit cell 100 is sufficiently absorbed by the heat transfer member 220 when passing through the air passage 221, and the temperature at the center point where heat is most difficult to transfer is released to the outside at 300 ° C. or less.
  • the ventilation path 221 has a length of, for example, 20 mm to 200 mm, an opening area of 0.5 mm 2 to 50 mm 2 , and when the unit cell 100 is a battery having a size of “18650”, for example, The length is 55 mm, and the inner diameter of the air passage 221 is 3 mm.
  • the heat transfer member 220 is a metal having a thermal conductivity of 200 W / (m ⁇ K) or more in order to quickly dissipate the heat to the outside of the battery module when any of the unit cells 100 abnormally generates heat. Or it is comprised with the ceramic material.
  • aluminum having a thermal conductivity of 236 W / (m ⁇ K) is used for the heat transfer member 220.
  • the heat transfer member has a through hole substantially parallel to the storage portion between the plurality of storage portions, so that the unit cell can be exhausted in an abnormal state without hindering downsizing. Since the hot gas to be cooled is cooled when passing through the air passage and the through hole, the temperature of the hot gas can be lowered.
  • the positive electrode connection body 230 and the negative electrode connection body 240 in this embodiment connect the positive electrode and the negative electrode of the several unit cell 100 in parallel, respectively, the form will not be ask
  • the positive electrode connection body 230 and the negative electrode connection body 240 may be formed of bus bars made of a metal material.
  • a negative electrode connection body is turned to a negative electrode upwards.
  • the high temperature gas may be discharged to the outside from the negative electrode side.
  • the wiring pattern which connects the positive electrode and negative electrode of the several unit cell 100 in parallel may be formed on the insulating wiring board.
  • the wiring board may be disposed on the positive electrode side of the unit cell 100, and wiring patterns for connecting the positive electrode and the negative electrode in parallel may be formed on the wiring board. At this time, it is not necessary to provide a wiring board on the negative electrode side of the unit cell 100.
  • the present invention is useful as a battery module storing a battery or the like that is required to be safe and small in size and weight, as well as an electronic device including the battery module and an electronic device including a storage portion.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention a trait à un support de piles (200) qui comprend : une pluralité de cellules unitaires comprenant en outre respectivement des unités d'évacuation qui éjectent le gaz qui est émis à l'intérieur des cellules ; un élément de transmission de chaleur (220) comprenant en outre une pluralité d'unités de logement cylindriques qui logent la pluralité de cellules unitaires ; et un corps de couvercle (270) qui recouvre les unités d'évacuation de la pluralité de cellules unitaires et qui forme un espace intérieur avec l'élément de transmission de chaleur (220). Les unités d'évacuation communiquent avec l'espace intérieur. L'élément de transmission de chaleur (220) comprend en outre une trajectoire de ventilation entre la pluralité d'unités de logement qui est parallèle à la direction axiale des unités de logement. Un côté d'extrémité de la trajectoire de ventilation communique avec l'espace intérieur et l'autre côté d'extrémité communique avec l'extérieur.
PCT/JP2011/007173 2011-06-28 2011-12-21 Support de piles WO2013001585A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-142566 2011-06-28
JP2011142566A JP2014170613A (ja) 2011-06-28 2011-06-28 電池モジュール

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WO2013001585A1 true WO2013001585A1 (fr) 2013-01-03

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PCT/JP2011/007173 WO2013001585A1 (fr) 2011-06-28 2011-12-21 Support de piles

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JP (1) JP2014170613A (fr)
WO (1) WO2013001585A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130263442A1 (en) * 2012-04-06 2013-10-10 Ferrari S.P.A. Method for implementing a system for the storage of electric energy for a vehicle with electric propulsion and having cylindrical chemical batteries arranged in a plastic support matrix
WO2016013150A1 (fr) * 2014-07-22 2016-01-28 パナソニックＩｐマネジメント株式会社 Module de batterie
EP3273501A1 (fr) * 2016-07-22 2018-01-24 Temsa Global Sanayi ve Ticaret Anonim Sirketi Module de batterie rechargeable
WO2021020003A1 (fr) * 2019-07-29 2021-02-04 三洋電機株式会社 Bloc batterie
EP3783734A1 (fr) * 2019-07-26 2021-02-24 Contemporary Amperex Technology Co., Limited Ensemble batterie, bloc-batterie et véhicule
CN112652835A (zh) * 2020-12-10 2021-04-13 深圳供电局有限公司 电池模组温控箱
GB2588391A (en) * 2019-10-18 2021-04-28 Xerotech Ltd A battery pack and method for removing at least one cell from a battery pack
WO2022003716A1 (fr) * 2020-06-29 2022-01-06 Tvs Motor Company Limited Système d'échappement d'un module de batterie
CN114072963A (zh) * 2019-08-01 2022-02-18 三洋电机株式会社 组电池
WO2022084000A1 (fr) * 2020-10-20 2022-04-28 Bayerische Motoren Werke Aktiengesellschaft Dispositif de batterie robuste et véhicule automobile
WO2023114924A3 (fr) * 2021-12-16 2023-08-10 Underwriters Laboratories Inc. Bac destiné à contenir des éléments ou batteries électrochimiques

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KR102288405B1 (ko) 2017-12-26 2021-08-09 주식회사 엘지에너지솔루션 공간 활용성과 안전성이 향상된 원통형 전지셀 조립체 및 이를 포함하는 배터리 모듈
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US20130263442A1 (en) * 2012-04-06 2013-10-10 Ferrari S.P.A. Method for implementing a system for the storage of electric energy for a vehicle with electric propulsion and having cylindrical chemical batteries arranged in a plastic support matrix
WO2016013150A1 (fr) * 2014-07-22 2016-01-28 パナソニックＩｐマネジメント株式会社 Module de batterie
EP3273501A1 (fr) * 2016-07-22 2018-01-24 Temsa Global Sanayi ve Ticaret Anonim Sirketi Module de batterie rechargeable
US11923559B2 (en) 2019-07-26 2024-03-05 Contemporary Amperex Technology Co., Limited Battery assembly, battery pack and vehicle
EP3783734A1 (fr) * 2019-07-26 2021-02-24 Contemporary Amperex Technology Co., Limited Ensemble batterie, bloc-batterie et véhicule
US11417932B2 (en) 2019-07-26 2022-08-16 Contemporary Amperex Technology Co., Limited Battery assembly, battery pack and vehicle
CN114080717A (zh) * 2019-07-29 2022-02-22 三洋电机株式会社 电池组
CN114080717B (zh) * 2019-07-29 2023-09-26 松下新能源株式会社 电池组
WO2021020003A1 (fr) * 2019-07-29 2021-02-04 三洋電機株式会社 Bloc batterie
CN114072963A (zh) * 2019-08-01 2022-02-18 三洋电机株式会社 组电池
GB2588391A (en) * 2019-10-18 2021-04-28 Xerotech Ltd A battery pack and method for removing at least one cell from a battery pack
WO2022003716A1 (fr) * 2020-06-29 2022-01-06 Tvs Motor Company Limited Système d'échappement d'un module de batterie
WO2022084000A1 (fr) * 2020-10-20 2022-04-28 Bayerische Motoren Werke Aktiengesellschaft Dispositif de batterie robuste et véhicule automobile
CN112652835A (zh) * 2020-12-10 2021-04-13 深圳供电局有限公司 电池模组温控箱
WO2023114924A3 (fr) * 2021-12-16 2023-08-10 Underwriters Laboratories Inc. Bac destiné à contenir des éléments ou batteries électrochimiques

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