WO2016084273A1 - Dispositif de source d'alimentation - Google Patents

Dispositif de source d'alimentation Download PDF

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Publication number
WO2016084273A1
WO2016084273A1 PCT/JP2015/003405 JP2015003405W WO2016084273A1 WO 2016084273 A1 WO2016084273 A1 WO 2016084273A1 JP 2015003405 W JP2015003405 W JP 2015003405W WO 2016084273 A1 WO2016084273 A1 WO 2016084273A1
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WO
WIPO (PCT)
Prior art keywords
case body
power supply
unit module
supply device
case
Prior art date
Application number
PCT/JP2015/003405
Other languages
English (en)
Japanese (ja)
Inventor
新吾 越智
橋本　裕之
達人 堀内
Original Assignee
三洋電機株式会社
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 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2016084273A1 publication Critical patent/WO2016084273A1/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
    • 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
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—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
    • H01M50/227—Organic material
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • 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 power supply device.
  • a power supply device that is used in a power storage system combined with a power generation device such as a solar cell and stores power generated by the power generation device is also known.
  • a chargeable / dischargeable secondary battery such as a lithium ion battery or a nickel metal hydride battery is used.
  • a power supply device configured to store a plurality of battery cells in a case. While this type of power supply device can be manufactured with a simple configuration, the battery cell is inserted into the molded case later, so that the clearance is taken into account in consideration of the dimensional tolerance of the battery cell. A battery cell is accommodated in the provided state.
  • a battery cell changes in size with charge / discharge and deterioration. Specifically, when the battery cell is charged, the battery cell expands, and when the battery cell is discharged, the battery cell contracts. Further, when the battery cell deteriorates, the battery cell expands.
  • the battery cell is stored with a clearance, even if the battery cell changes its dimensions due to charge / discharge or deterioration, the battery cell Dimensional changes are absorbed. That is, according to this configuration, it is possible to suppress dimensional changes in the case of the power supply device.
  • the power supply device disclosed in the following patent document includes a voltage detection line including a detection terminal configured to be elastically deformable, and the detection terminal is connected to the output terminal of the battery cell in a surface contact manner. It is configured. According to this configuration, since the voltage detection line is not fixed to the output terminal, it is possible to suppress the load from being applied to the output terminal even when the battery cell is displaced in the case.
  • a voltage detection line including a detection terminal configured to be elastically deformable it is possible to suppress the load from being applied to the output terminal. It may become impossible to maintain. For example, when a strong vibration is applied to the power supply device, the detection terminal is instantaneously deformed. At this time, if the detection terminal is greatly deformed, the detection terminal is plastically deformed, and the detection terminal and the output terminal The problem that it becomes impossible to maintain the contact with is caused.
  • the present invention is an invention made in order to solve such a problem, and its main object is a power supply device configured to store a plurality of battery cells in a case, and the contact between the voltage detection terminal and the battery cell.
  • An object of the present invention is to provide a power supply device including a power supply device having a configuration capable of maintaining the performance.
  • a power supply device includes at least one unit module, a case for holding at least one unit module in a displaceable state, and a voltage detection line provided in the case.
  • At least one unit module has a terminal portion in which output terminals of a plurality of battery cells are located.
  • the voltage detection line absorbs the displacement of the relative position of the welded portion welded to the output terminal of the battery cell, the first locked portion held by the case, and the first locked portion and the welded portion. Includes a play club.
  • the play portion is provided between the first locked portion and the welded portion.
  • FIG. 2 is an exploded perspective view of the battery module of FIG. 1 with a second case body removed.
  • FIG. 2 is a perspective view of the battery module of FIG. 1 with a second case body removed.
  • It is sectional drawing of the battery module of FIG. It is a top view of the 1st case body in the embodiment of the present invention.
  • FIG. 10 is a perspective view of the holding member shown in FIG. 9.
  • FIG. 10 is a cross-sectional view of the battery module including the unit module of FIG. 9 with the second case body removed.
  • the power supply device is configured by connecting a plurality of battery modules 1 according to required performance. If the power supply device has a relatively low output, the power supply device can be configured by one battery module 1. A specific configuration of the battery module 1 is illustrated in FIG.
  • the battery module 1 shown in FIG. 1 has a flat rectangular parallelepiped resin case 20 and a plurality of battery cells 11.
  • the case 20 has a storage space for storing a plurality of battery cells 11 therein, and the plurality of battery cells 11 are stored in the storage space.
  • An external terminal portion 21 is provided on the surface of the case 20, and the plurality of battery cells 11 are electrically connected to the external terminal portion 21. With this configuration, the power of the battery module 1 can be output or a plurality of battery modules 1 can be connected via the external terminal portion 21.
  • the “case” or “case body” described later includes not only a box-shaped container but also various shapes such as a frame and a frame, and a plurality of battery cells 11.
  • the storage member in which is stored.
  • the battery cell 11 accommodated in the case 20 is a rechargeable secondary battery.
  • a secondary battery such as a lithium ion battery or a nickel metal hydride battery can be used.
  • 2 and 3 are diagrams for explaining a specific configuration of the battery cell 11 described above, and a pouch battery is illustrated as a representative configuration.
  • the battery cell 11 in FIGS. 2 and 3 includes an exterior body 12 formed of a deformable laminate film, a power generation element sealed in the exterior body 12, and an electrode tab 13 connected to the power generation element.
  • the power generation element includes an electrode body and an electrolytic solution.
  • the electrode tab 13 is an output terminal of the battery cell 11 and is led out from the inside of the exterior body 12 to the outside of the exterior body 12.
  • This type of battery cell 11 is known to have a flat wound electrode body or a laminated electrode body as an electrode body.
  • the wound electrode body is an electrode body formed in a flat shape by winding a positive electrode plate and a negative electrode plate through a separator, and then pressing them.
  • the laminated electrode body is an electrode body formed by laminating a sheet-like positive electrode plate and a negative electrode plate via a separator.
  • the electrode body should just be able to enclose the electric power generation element in the exterior body 12, and does not necessarily need to be restricted to the above-mentioned structure.
  • the battery cell 11 illustrated in FIG. 2 and FIG. 3 is formed by arranging an electrode body on a single laminate film, folding the laminate film, and thermally welding the laminated films that overlap each other on the folded sides. Is done.
  • one electrode tab 13 is extended from each of the two sides located at both ends of the exterior body 12 when the laminate film is thermally welded.
  • 3 has a pair of electrode tabs 13 extending from one side of the outer package 12 when the laminate film is thermally welded.
  • the battery cell 11 having the above configuration is formed in a thick flat plate shape and has a pair of wide surfaces having a larger area than the other surfaces.
  • the laminated film examples include a sheet-like film having a five-layer structure of resin layer (polypropylene) / adhesive layer / aluminum alloy layer / adhesive layer / resin layer (polypropylene).
  • the laminate film is not necessarily limited to this configuration, and composite films of metal and resin having various configurations can be used.
  • the pouch battery Since the pouch battery has a relatively simple configuration, the outer shape can be made smaller than other battery cells such as a square battery housed in a metal battery case. On the other hand, since the laminate film is deformed relatively easily by an external force, the shape stability is low. Therefore, the pouch battery has a feature that the outer shape can be reduced although the stability of the shape is low.
  • the exterior body 12 is relatively easily deformed as described above, and thus there is a problem that it is difficult to stably store the case 20 inside.
  • it is effective to form a unit module 10 by assembling a plurality of battery cells 11 and store the unit module 10 in a case 20. .
  • the unit module 10 illustrated in FIG. 4 and FIG. 5 includes a plurality of battery cells 11 and a holding member that holds the plurality of battery cells 11, and terminal portions 15 are provided on a pair of opposing surfaces.
  • the plurality of battery cells 11 are stacked such that their wide surfaces face each other.
  • the plurality of battery cells 11 are stacked such that their output terminals are close to each other, and the output terminals are located at the terminal portions 15 of the unit module 10.
  • the holding member is composed of a pair of metal holding plates 14 that fit together.
  • the plurality of battery cells 11 are disposed between the pair of holding plates 14 in a stacked state.
  • the plurality of battery cells 11 arranged between the pair of holding plates 14 are held in a state where the wide surface is pressed by the pair of holding plates 14.
  • the unit module 10 illustrated in FIG. 4 is configured to include the pouch battery of FIG. 2 as the battery cell 11, but may be configured to include the pouch battery of FIG.
  • the terminal portion 15 is formed on one surface of the unit module 10.
  • the case 20 includes a first case body 30 and a second case body 40.
  • the first case body 30 has a first opening 31 that opens at least the upper surface.
  • the plurality of unit modules 10 are stacked along one direction, and the wide surfaces of the plurality of battery cells 11 constituting each unit module 10 face each other.
  • Each unit module 10 is stacked such that the terminal portions 15 are located on the same plane, and the electrode tabs 13 of the plurality of battery cells 11 are close to each other.
  • the plurality of unit modules 10 are inserted from the first opening 31 in such a stacked state.
  • the first case body 30 has a second opening 32.
  • the second opening portion 32 is provided at a position corresponding to the terminal portion 15 of the unit module 10 in a state of being inserted into the first case body 30.
  • the electrode tab 13 located in the terminal portion 15 is overlapped with the electrode tabs 13 of the battery cells 11 to be connected and welded using a laser. Since the first case body 30 is configured such that the second opening 32 is provided at a position corresponding to the terminal portion 15, when the electrode tab 13 is welded, the first case body 30 is made of laser. Interference with irradiation can be prevented.
  • the electrode tab 13 is also welded with a voltage detection line 50 for detecting the voltage of each battery cell 11. Since the terminal portion 15 is exposed from the second opening 32, the voltage detection line 50 corresponds to the state in which the unit module 10 is inserted into the first case body 30 in the same manner as the welding of the electrode tabs 13 to each other. It can be welded to the electrode tab 13. After welding the electrode tab 13 and the voltage detection line 50, the second case body 40 is connected to the first case body 30. With the above configuration, the plurality of unit modules 10 are disposed between the first case body 30 and the second case body 40 and are accommodated in the case 20.
  • the second case body 40 has a cover portion 41 at a position corresponding to the second opening 32 of the first case body 30.
  • the external terminal portion 21 is provided on the end surface where the cover portion 41 is located.
  • the cover portion 41 partially closes the second opening 32. That is, in a state where the second case body 40 is coupled to the first case body 30, the cover portion 41 covers at least a part of the terminal portions 15 of the plurality of unit modules 10 housed in the case 20. It is configured. With this configuration, contact between the electrode tab 13 and an unintended member can be prevented.
  • the cover portion 41 does not completely close the second opening portion 32, and the opening is formed on both sides of the cover portion 41 in a state where the second case body 40 is connected to the first case body 30. It is supposed to be formed.
  • the electrode tabs 13 of the battery cells 11 are led out from the openings provided on both sides of the cover portion 41 and are bent along the surface of the cover portion 41.
  • the connection conductor 60 is disposed on the bent electrode tab 13 so that the connection conductor 60 and the electrode tab 13 are welded.
  • the connection conductor 60 has a notch formed at a position corresponding to the external terminal portion 21.
  • the unit module 10 to which the connection conductor 60 is welded is inserted into the first case body 30, and the second case body 40 is coupled to the first case body 30, thereby cutting the connection conductor 60.
  • the external terminal portion 21 provided in the second case body 40 can be inserted into the notch.
  • the connection conductor 60 and the external terminal portion 21 are electrically connected.
  • the cover part 41 can be interposed between the connection conductor 60 and the electrode tab 13 of the battery cell 11 inside the resin case 20, and the pair of connection conductors 60 and the connection conductors 60 are not directly connected. The insulation distance from the electrode tab 13 of the battery cell 11 can be ensured.
  • the first case body 30 includes a base portion 33 on which the unit module 10 is placed and a side wall portion 36 provided on the base portion 33.
  • the base portion 33 is provided with a plurality of partition walls 34.
  • the plurality of partition walls 34 divide the interior of the first case body 30 and form an accommodation space for inserting the plurality of unit modules 10.
  • the plurality of unit modules 10 arranged in the accommodation space are restricted from moving in the stacking direction of the battery cells 11 by the adjacent partition walls 34.
  • a convex portion 38 can be provided in the accommodation space.
  • the convex portion 38 is provided at a position corresponding to the terminal portion 15 of the unit module 10.
  • the partition wall 34 and the convex portion 38 guide the unit module 10 to a predetermined position in a state where a clearance is provided between the partition wall 34 and the convex portion 38.
  • a wiring space for arranging the voltage detection line 50 is formed on the opposite side of the surface on which the unit module 10 is placed.
  • a plurality of locking portions for holding the voltage detection line 50 are provided.
  • the base portion 33 is provided with a pair of through holes 35 that communicate the wiring space and the accommodation space in correspondence with the position of the terminal portion 15 of the unit module 10.
  • the side wall portion 36 includes the second opening portion 32. Further, as shown in FIG. 8, the side wall portion 36 is provided with a plurality of first locking portions 37 for holding the voltage detection lines 50 corresponding to the spaces partitioned by the partition walls 34.
  • the voltage detection line 50 is disposed in the wiring space of the base portion 33, and is led out from the through hole 35 of the base portion 33 to the housing space of the first case body 30.
  • the voltage detection line 50 is provided at the front end, and is welded to the electrode tab 13 of the battery cell 11 and a first hooked portion 51 locked to a first locking portion 37 provided to the side wall portion 36. And a locking portion 52.
  • the welding part 51 is a detection terminal for acquiring the potential of the electrode tab 13.
  • the voltage detection line 50 has a play portion 53 provided between the welded portion 51 and the first locked portion 52.
  • the play portion 53 absorbs the displacement and prevents the welded portion 51 and the first locked portion 52 from being loaded. To do. Specifically, in the battery module of FIG. 7, the play portion 53 corresponds to the voltage detection line 50 between the welded portion 51 and the first locked portion 52, and the first case body 30. Displacement can be absorbed by being arranged in a bent state.
  • the battery module 1 having the above configuration is configured such that the electrode tab 13 can be welded in a state in which the unit module 10 is inserted into the first case body 30, while the second case body 40 is used as the first case body 30. In the state of being connected to, the contact between the terminal portion 15 and an unintended member can be prevented. Therefore, the insulation of the terminal part 15 can be improved while improving productivity. Moreover, it can prevent that the load is applied to the welding part of the voltage detection line 50, making it the structure which welds the voltage detection line 50 fixed to a case to the electrode tab 13 of the unit module 10 to displace.
  • FIG. 9 illustrates a modification of the unit module 10.
  • the unit module 10 shown in FIG. 9 includes a holding frame 70 including a guide portion 71 along which the electrode tab 13 extends as a holding member.
  • the unit module 10 according to the modification has a configuration in which the electrode tab 13 is bent along the guide portion 71, so that it is easy to specify the relative position of the welded portion of the electrode tab 13 with respect to the unit module 10.
  • the electrode tab 13 can be pressed against the guide part 71, and it becomes easy to ensure the adhesiveness of the electrode tabs 13 to be connected. As shown in FIGS.
  • the guide portion 71 may include a groove portion 72 including a groove formed corresponding to the welded portion of the electrode tab 13.
  • the guide portion 71 When laser is irradiated while the welded portion of the electrode tab 13 is in contact with the guide portion 71, heat is transmitted to the guide portion 71, and the amount of heat necessary for welding may not be ensured. Since the holding frame 70 of FIG. 9 is provided with the groove portion 72 in the guide portion 71, the welding portion of the electrode tab 13 can be prevented from coming into direct contact with the guide portion 71, and heat transfer that hinders laser welding. Can be prevented.
  • FIG. 11 is a cross-sectional view of the battery module 1 using the unit module 10 of the modification of FIG. Since the unit module 10 according to the modification includes the holding frame 70 including the guide portion 71, the second locking portion 73 can be provided on the guide portion 71.
  • the voltage detection line 50 includes a second locked portion 54 provided between the welded portion 51 and the play portion 53, and a second locking portion provided on the holding frame 70. 73. According to this configuration, since both ends of the play portion 53 are held by the first locking portion 37 and the second locking portion 73, stress concentration on the welded portion 51 can be further suppressed, and the unit Breakage and breakage of the voltage detection line 50 due to the displacement of the module 10 can be prevented.

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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)
  • Battery Mounting, Suspending (AREA)

Abstract

Cette invention concerne une technique permettant d'immobiliser solidement une ligne de détection de tension et un élément de batterie tout en supprimant une modification des dimensions d'un boîtier. Plus précisément, l'invention concerne un dispositif de source d'alimentation, comprenant au moins un module unitaire (10), un boîtier pour maintenir ledit/lesdits module(s) unitaires (10) dans un état déplaçable, et une ligne de détection de tension (50) dont le boîtier est équipé. Ledit/lesdits module(s) unitaire(s) (10) comprend/comprennent une partie terminale (15) sur laquelle sont disposées des bornes de sortie d'une pluralité d'éléments de batterie. La ligne de détection de tension (50) comprend une partie soudée (51) soudée sur les bornes de sortie des éléments de batterie, une première partie bloquée (52) retenue par le boîtier, et une partie de jeu (53) pour absorber un décalage des positions relatives de la première partie bloquée (52) et de la partie soudée (51). La partie de jeu (53) est ménagée entre la première partie bloquée (52) la partie soudée (51).
PCT/JP2015/003405 2014-11-28 2015-07-07 Dispositif de source d'alimentation WO2016084273A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-241079 2014-11-28
JP2014241079 2014-11-28

Publications (1)

Publication Number Publication Date
WO2016084273A1 true WO2016084273A1 (fr) 2016-06-02

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PCT/JP2015/003405 WO2016084273A1 (fr) 2014-11-28 2015-07-07 Dispositif de source d'alimentation

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