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WO2017119106A1 - Power storage module - Google Patents

Power storage module Download PDF

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Publication number
WO2017119106A1
WO2017119106A1 PCT/JP2016/050383 JP2016050383W WO2017119106A1 WO 2017119106 A1 WO2017119106 A1 WO 2017119106A1 JP 2016050383 W JP2016050383 W JP 2016050383W WO 2017119106 A1 WO2017119106 A1 WO 2017119106A1
Authority
WO
WIPO (PCT)
Prior art keywords
power storage
battery
container
storage module
module according
Prior art date
Application number
PCT/JP2016/050383
Other languages
French (fr)
Japanese (ja)
Inventor
吉瀬　万希子
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2016/050383 priority Critical patent/WO2017119106A1/en
Publication of WO2017119106A1 publication Critical patent/WO2017119106A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/20—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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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 storage module in which a plurality of power storage devices are combined.
  • Examples of power storage devices mounted on electric vehicles or storage battery systems for power storage include lithium ion secondary batteries, electric double layer capacitors, and lithium ion capacitors. These power storage devices include not only conventional portable devices, but also home appliances, backup power supplies, electric vehicles abbreviated as EV (Electric Vehicle), hybrid electric vehicles abbreviated as HEV (Hybrid Electric Vehicle), or smart grids. Application expansion to such large-scale power sources is progressing. Power storage devices used in these devices are larger than conventional power sources for portable devices, and are required to withstand long-term use.
  • Patent Document 1 inserts a plurality of battery cells into a holder block, equalizes the external pressure applied to the battery cells, and suppresses deterioration of the battery cells.
  • the holder block of Patent Document 1 is made of plastic or metal.
  • Patent Document 1 Since plastic is inferior in heat conductivity to metal, in the invention disclosed in Patent Document 1, if the holder block is made of plastic, the battery cell becomes high temperature as soon as charging and discharging are performed, and the deterioration is promoted. In order to prevent this, in Patent Document 1, a closing plate is disposed below the holder block, and the battery is cooled from the bottom by flowing a coolant through the closing plate to cool the battery, thereby suppressing deterioration of the battery cell. ing.
  • the present invention has been made in view of the above, and an object thereof is to obtain a power storage module in which a module container is not easily deformed even when the power storage device is deteriorated.
  • the present invention is a power storage module that includes a plurality of power storage devices arranged in a plurality of rows and a module container that holds the plurality of power storage devices.
  • the power storage devices are arranged in the module container with the positive electrode terminal and the negative electrode terminal facing upward, with the center position shifted in the arrangement direction for each column, and the positive electrode terminal and the negative electrode terminal between adjacent power storage devices are electrically conductive. They are connected by members.
  • the power storage module according to the present invention has an effect that the module container is not easily deformed even when the power storage device is deteriorated.
  • FIG. 1 The figure which shows schematic structure of the electrical storage module which concerns on Embodiment 1 of this invention 1 is an exploded perspective view showing a configuration of a storage battery of an electricity storage module according to Embodiment 1.
  • FIG. 2 The figure which shows the structure of the electrical storage module which concerns on Embodiment 2 of this invention.
  • FIG. 4 The perspective view of the spacer board which incorporates the cooling pipe of the electrical storage module which concerns on Embodiment 4.
  • FIG. 4 The perspective view of the spacer board provided with the heat sink of the electrical storage module which concerns on Embodiment 4.
  • FIG. 4 The perspective view of the spacer board provided with the fin integrated with the main-body part of the electrical storage module which concerns on Embodiment 4.
  • FIG. 5 of this invention The disassembled perspective view of the electrical storage module which concerns on Embodiment 6 of this invention
  • FIG. 1 is a diagram showing a schematic configuration of the power storage module according to Embodiment 1 of the present invention.
  • the power storage module according to Embodiment 1 includes a plurality of storage batteries 1 that are power storage devices that store electric power, and a module container 5 that houses and holds the storage battery 1.
  • the storage battery 1 includes a positive electrode terminal 2 and a negative electrode terminal 3.
  • the storage battery 1 is also provided with a gas release valve 4 that opens to release the internal gas when the internal pressure of the battery becomes equal to or higher than the open pressure.
  • the module container 5 is made of metal or resin.
  • the module container 5 may be provided with a function of enclosing the outer frames of the plurality of storage batteries 1 and collecting the storage batteries 1, and may not be a container shape.
  • the plurality of storage batteries 1 are arranged in a plurality of rows, and in the case of series connection, the positive terminals 2 and the negative terminals 3 of the storage batteries 1 in adjacent rows are connected to each other by a bus bar 12.
  • the bus bar 12 is a plate-like or bar-like metal plate made of a metal such as copper, aluminum, or nickel, and serves as a power line that connects the storage batteries 1 or the storage battery 1 and the converter.
  • the connection of the storage battery 1 is not restricted to series connection, and in the case of parallel connection, the positive terminals of a plurality of adjacent storage batteries are connected and the negative terminals are connected.
  • the bus bar 12 may be made of copper plated with nickel or tin.
  • the bus bar 12 may be screwed through the positive terminal 2 or the negative terminal 3 and may be directly welded to the positive terminal 2 and the negative terminal 3 of the storage battery 1.
  • FIG. 1 shows a configuration in which the positive terminals 2 and the negative terminals 3 are connected by the bus bars 12 that are conductive members between the storage batteries 1 in adjacent rows.
  • the positive electrode terminal 2 and the negative electrode terminal 3 may be connected to each other by a bus bar 12.
  • FIG. 2 is an exploded perspective view showing the configuration of the storage battery of the power storage module according to Embodiment 1.
  • FIG. The storage battery 1 has a structure in which a wound body 6 that generates a voltage is accommodated in a battery container 10 and sealed with a battery lid 11.
  • the wound body 6 is obtained by winding a positive electrode 8, a negative electrode 9, and separators 7 a, 7 b that insulate the positive electrode 8 and the negative electrode 9 on each other in the order of the separator 7 a, the positive electrode 8, the separator 7 b, and the negative electrode 9. ,
  • the wound body 6 may be cylindrical.
  • the storage battery 1 is formed by inserting a wound body 6 into a battery container 10, injecting an electrolytic solution, covering the battery cover 11, and laser welding between the battery container 10 and the battery cover 11.
  • the battery container 10 is made of a metal such as aluminum, stainless steel, or iron, and generally has a square shape or a cylindrical shape.
  • the positive electrode terminal 2 can be formed of aluminum.
  • the negative electrode terminal 3 can be formed of aluminum, copper, or copper plated with nickel.
  • the material of the positive electrode terminal 2 and the negative electrode terminal 3 is not limited to said material.
  • power storage devices such as lithium ion secondary batteries are subject to deterioration in which the power storage capacity decreases with long-term use.
  • Deteriorated power storage devices are deformed due to the generation of gas generated by internal reactions and the increase in electrode thickness due to repeated charge and discharge.
  • the deterioration of the electricity storage device varies depending on the operating conditions and the environment, but in many cases, the container of the electricity storage device expands due to the deterioration. If the gap is generated between the electrodes due to the generation of gas in the container and the adhesion is reduced, the reaction becomes non-uniform and the deterioration of the electricity storage device further proceeds.
  • the container swells in various ways, but square, pouch-type, or cylindrical-type power storage devices swell around the center of the wide surface as they deteriorate, increasing their thickness to a drum shape. It may be deformed.
  • a thickness is applied at the central portion of the surface having the largest area due to the pressing force applied from the module container and the end of the electrode body inside the power storage device being constrained. The increase is likely to be maximized.
  • the opening pressure of the gas release valve 4 depends on the type of the storage battery 1, but opens immediately if the opening pressure is too low. Once the storage battery 1 is opened, air and moisture are mixed from the outside and the characteristics of the battery deteriorate. Therefore, it is necessary to take measures such as discontinuing use and replacing the battery. For this reason, in the storage battery 1, the opening pressure of the gas release valve 4 is set high, and the battery container 10 often expands before the internal pressure reaches the opening pressure of the gas release valve 4.
  • the plurality of storage batteries 1 are arranged in the module container 5 in two rows by shifting the end portions 1e and the central portion 1c so that the end portions 1e of the wide surface 1w are not aligned. ing.
  • the storage batteries 1 are arranged in adjacent rows so as to be arranged in the arrangement direction so that the end portion 1e that is unlikely to bulge is disposed at a position facing the central portion 1c of the battery container 10 that is liable to bulge.
  • Connection of the positive electrode terminal 2 and the negative electrode terminal 3 is suppressed by suppressing deformation of the module container 5 due to overlapping of the bulges of the central portion 1c of 1w, and suppressing an increase in stress applied to the positive electrode terminal 2, the negative electrode terminal 3, and its connecting portion.
  • the battery container 10 is a square type, but it may be a pouch type using a laminate film in which an aluminum film and a resin film are laminated and adhered.
  • the storage battery 1 is connected by the bus bar 12.
  • a power cable in which a stranded wire of copper or aluminum is covered with an insulator or an anticorrosive layer may be used as the conductive member. Is possible.
  • the storage battery 1 is connected by the bus bar 12, but the terminal of the storage battery 1 may be welded instead of screwed.
  • a configuration in which a plurality of storage batteries 1 are arranged in two rows is shown, but the number of columns may be larger than two.
  • the storage battery 1 is thin like a pouch type, a plurality of rows can be arranged.
  • the number of storage batteries 1 arranged in the module is not limited to eight shown in FIG.
  • the storage battery 1 in which the wound body 6 is housed in the battery container 10 and the electrolytic solution is injected and then the battery cover 11 is put on is taken as an example.
  • the storage battery 1 has a positive electrode, a separator, and a negative electrode alternately.
  • stacking may be accommodated in a battery container, and the structure which inject
  • the storage battery 1 is arranged so that the central portions 1c of the wide surface 1w having a large amount of deformation due to swelling do not overlap with each other. Progress of deterioration can be suppressed.
  • FIG. FIG. 3 is a diagram showing a configuration of the power storage module according to Embodiment 2 of the present invention.
  • the second embodiment is different from the first embodiment in that the storage battery is disposed with a gap provided between the side surfaces 1s of the storage batteries 1 adjacent in the same row.
  • By providing an interval between the side surfaces 1 s it is possible to efficiently dissipate heat from the storage battery 1, and it is possible to suppress a temperature rise of the storage battery 1 and suppress deterioration.
  • cooling by ventilation such as a fan
  • Others are the same as in the first embodiment.
  • FIG. FIG. 4 is a diagram showing the configuration of the power storage module according to Embodiment 3 of the present invention.
  • the module battery 5 is notched and the internal storage battery 1 is visualized.
  • the third embodiment is different from the first embodiment in that a fan 14 is attached to the lid 13 of the module container 5 and the storage battery 1 is cooled by blowing air from the upper part of the terminal of the storage battery 1.
  • a positive electrode terminal 2 and a negative electrode terminal 3 protruding to the outside of the battery are connected to an internal positive electrode 8 and a negative electrode 9. For this reason, it becomes possible to cool the inside of the storage battery 1 efficiently by cooling the positive electrode terminal 2 or the negative electrode terminal 3.
  • Others are the same as in the first embodiment.
  • FIG. FIG. 5 is a diagram showing the configuration of the power storage module according to Embodiment 4 of the present invention.
  • the fourth embodiment is different from the second embodiment in that the spacer plate 15 is disposed in close contact with the storage battery 1 between the opposing wide surfaces 1w of the storage battery 1.
  • the material of the spacer plate 15 is not particularly limited, but a metal plate having a certain degree of strength and good thermal conductivity, or a composite of metal and carbon formed into a plate shape or a sheet shape is desirable. That is, it is preferable that the battery 1 has a strength that does not deform due to the pressing force to the spacer plate 15 when the storage battery 1 swells.
  • the height of the spacer plate 15 is preferably lower than the height of the storage battery 1. By reducing the height of the spacer plate 15, the power storage module itself can be reduced in weight, and a measurement line or the like can be stored in the space above the spacer plate 15.
  • FIG. 6 is a diagram illustrating a configuration in which a CMU substrate is accommodated in a space between the storage battery of the power storage module according to Embodiment 4 and the inner wall of the module container. Since the storage batteries 1 are alternately shifted, an empty space is created at the end of the power storage module container 5. By installing a measurement member such as the CMU substrate 20 in this space, the space inside the module container 5 can be used effectively.
  • CMU cell monitoring unit
  • FIG. 7 is a perspective view of a spacer plate incorporating a cooling pipe of the power storage module according to the fourth embodiment.
  • a cooling pipe 16 is built in the spacer plate 15, and the storage battery can be cooled by flowing a coolant through the cooling pipe 16.
  • the cooling pipe 16 is preferably made of a material having good heat conductivity such as copper, brass or aluminum. Further, instead of incorporating the cooling pipe 16, it is possible to provide the spacer plate 15 with a flow path through which the coolant passes by cutting the spacer plate 15 or creating the spacer plate 14 by extrusion. is there.
  • FIG. 8 is a perspective view of the spacer plate provided with the heat sink of the power storage module according to the fourth embodiment. Since a plurality of plate-like heat sinks 17 are formed inside the spacer plate 15, the heat generated from the storage battery 1 can be efficiently transferred to the outside by performing cooling by blowing with a fan or the like from the front side of the spacer plate 15. I can escape.
  • FIG. 9 is a perspective view of a spacer plate provided with fins integrated with the main body of the power storage module according to the fourth embodiment.
  • the spacer plate 15 is formed with fins 15b integrated with the main body 15a perpendicular to the main body 15a.
  • the spacer plate 15 is formed in such an arrangement that the branched fins 15b are installed in the gap between the storage batteries 1 from the main body portion 15a as the center. In this case, the heat transferred from the wide surface 1w of the storage battery 1 to the spacer plate 15 is radiated by the fins 15b. Thereby, the heat generated from the storage battery 1 can be efficiently released to the outside.
  • FIG. FIG. 10 is an exploded perspective view of the power storage module according to Embodiment 5 of the present invention.
  • the power storage module according to the fifth embodiment is the second embodiment in that the bottom surface 51 of the module container 5 has a structure in which the guide 18 along the bottom surface shape of the storage battery 1 and the air vent 51a for cooling are provided. Is different.
  • the guide 18 is provided by forming a recess corresponding to the shape of the storage battery 1 on the bottom surface 51.
  • the guide 18 facilitates the positioning of the storage battery 1 to improve the assemblability, and prevents the storage battery 1 from being displaced and inclined.
  • the air vent 51 and improving the air permeability of the bottom surface 51 the temperature rise inside the module container 5 can be suppressed, and the deterioration of the storage battery 1 can be suppressed.
  • FIG. 11 is an exploded perspective view of the power storage module according to Embodiment 6 of the present invention.
  • the module container 5 is not shown except for the bottom surface 51.
  • the power storage module according to the sixth embodiment is different from the second embodiment in that a guide 19 for fitting the spacer plate 15 to the bottom surface 51 of the module container 5 is formed.
  • the storage battery 1 can be pressed by fitting the spacer plate 15 in accordance with the guide 19.
  • the shift and inclination of the storage battery 1 can be prevented.
  • the bottom surface 51 into a structure with good air permeability, the temperature rise of the power storage module can be suppressed, and the deterioration of the storage battery 1 can be suppressed.
  • the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
  • 1 storage battery 1c center part, 1e end part, 1s side face, 1w wide face, 2 positive electrode terminal, 3 negative electrode terminal, 4 gas release valve, 5 module container, 6 rolls, 7a, 7b separator, 8 positive electrode, 9 negative electrode 10, battery container, 11 battery cover, 12 bus bar, 13 cover, 14 fan, 15 spacer plate, 15a main body, 15b fin, 16 cooling pipe, 17 heat sink, 18, 19 guide, 20 CMU substrate, 51 bottom surface, 51a through Pores.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

Provided is a power storage module that includes: a plurality of power storage batteries (1) disposed so as to be arranged in multiple rows; and a module container (5) that retains the plurality of storage batteries (1). In a state in which positive electrode terminals (2) and negative electrode terminals (3) are on top, the plurality of storage batteries (1) are arranged within the module container (5) so that the center position is shifted in the arrangement direction in each row so that an end (1e) of a wide surface (1w) and a center part (1c) face each other. The positive electrode terminal (2) and the negative electrode terminal (3) of adjacent storage batteries (1) are connected to each other by a bus bar (12).

Description

蓄電モジュールPower storage module
　本発明は、蓄電デバイスを複数個組み合わせた蓄電モジュールに関する。 The present invention relates to a power storage module in which a plurality of power storage devices are combined.
　電気自動車又は電力貯蔵用蓄電池システムに搭載される蓄電デバイスには、リチウムイオン二次電池、電気二重層キャパシタ及びリチウムイオンキャパシタが挙げられる。これらの蓄電デバイスは、従来の携帯用機器のみならず、家電製品、バックアップ電源、ＥＶ（Electric　Vehicle）と略称される電気自動車、ＨＥＶ（Hybrid　Electric　Vehicle）と略称されるハイブリッド電気自動車又はスマートグリッドのような大型電源への適用拡大が進んでいる。これらの機器に使用される蓄電デバイスは、従来の携帯機器用電源に比べて大型であり、長期間の使用に耐えることが要求される。 Examples of power storage devices mounted on electric vehicles or storage battery systems for power storage include lithium ion secondary batteries, electric double layer capacitors, and lithium ion capacitors. These power storage devices include not only conventional portable devices, but also home appliances, backup power supplies, electric vehicles abbreviated as EV (Electric Vehicle), hybrid electric vehicles abbreviated as HEV (Hybrid Electric Vehicle), or smart grids. Application expansion to such large-scale power sources is progressing. Power storage devices used in these devices are larger than conventional power sources for portable devices, and are required to withstand long-term use.
　これらのシステムに使用される蓄電デバイスは、長期の保存又は充放電サイクルによって劣化が進行し、蓄積可能な容量が低下する。劣化抑制の目的から、特許文献１では、複数の電池セルをホルダーブロックに挿入し、電池セルにかかる外部からの圧力を均等化し、電池セルの劣化を抑制している。特許文献１のホルダーブロックは、プラスチック又は金属製である。 The power storage devices used in these systems are deteriorated by long-term storage or charge / discharge cycles, and the capacity that can be stored decreases. For the purpose of suppressing deterioration, Patent Document 1 inserts a plurality of battery cells into a holder block, equalizes the external pressure applied to the battery cells, and suppresses deterioration of the battery cells. The holder block of Patent Document 1 is made of plastic or metal.
　プラスチックは熱伝導性が金属よりも劣るため、特許文献１に開示される発明では、ホルダーブロックがプラスチック製であると、電池セルは充放電を行うとすぐに高温となり劣化が促進される。これを防止する目的で、特許文献１では、ホルダーブロックの下部に閉塞プレートを配置し、閉塞プレートの中に冷媒を流して冷却することにより電池を底面から冷却し、電池セルの劣化を抑制している。 Since plastic is inferior in heat conductivity to metal, in the invention disclosed in Patent Document 1, if the holder block is made of plastic, the battery cell becomes high temperature as soon as charging and discharging are performed, and the deterioration is promoted. In order to prevent this, in Patent Document 1, a closing plate is disposed below the holder block, and the battery is cooled from the bottom by flowing a coolant through the closing plate to cool the battery, thereby suppressing deterioration of the battery cell. ing.
特開２００８－５９８４９号公報JP 2008-59849 A
　特許文献１に開示される発明では、蓄電デバイスである電池セルは広幅面の中央部を揃えて配列されているため、蓄電デバイスに劣化が生じて蓄電デバイスの容器が膨らむと、変形量が大きい広幅面の中央部に対応する部分のモジュール容器に加わる応力が強くなり、モジュール容器が変形する。また、蓄電デバイスの容器が膨らむと、広幅面同士が当たり、互いに押圧力がかかり、電池セル同士の接続部に応力がかかる。このような応力は長期使用に伴い、接続部の緩み及び応力割れなどの原因となる。また、モジュール容器が強固で変形しない場合、蓄電デバイスの拘束力が強く膨れは抑制されるが、容器内の内圧が上昇し、内部の圧力を開放するため、容器が開口してしまう可能性がある。 In the invention disclosed in Patent Document 1, since the battery cells that are power storage devices are arranged with the central portion of the wide surface aligned, if the power storage device deteriorates and the container of the power storage device expands, the amount of deformation is large. The stress applied to the module container in the portion corresponding to the central portion of the wide surface is increased, and the module container is deformed. Further, when the container of the electricity storage device swells, the wide surfaces come into contact with each other, a pressing force is applied to each other, and a stress is applied to the connection portion between the battery cells. Such stress causes loosening of connection parts and stress cracking with long-term use. In addition, when the module container is strong and does not deform, the restraining force of the power storage device is strong and swelling is suppressed, but the internal pressure in the container rises and the internal pressure is released, so the container may open. is there.
　本発明は、上記に鑑みてなされたものであって、蓄電デバイスに劣化が生じてもモジュール容器が変形しにくい蓄電モジュールを得ることを目的とする。 The present invention has been made in view of the above, and an object thereof is to obtain a power storage module in which a module container is not easily deformed even when the power storage device is deteriorated.
　上述した課題を解決し、目的を達成するために、本発明は、複数列に配列して設置された複数の蓄電デバイスと、該複数の蓄電デバイスを保持するモジュール容器とを有する蓄電モジュールであって、蓄電デバイスは、正極端子及び負極端子を上にした姿勢で、列ごとに中心位置を配列方向にずらしてモジュール容器内に配置され、隣り合う蓄電デバイス同士の正極端子と負極端子とが導電部材で接続されていることを特徴とする。 In order to solve the above-described problems and achieve the object, the present invention is a power storage module that includes a plurality of power storage devices arranged in a plurality of rows and a module container that holds the plurality of power storage devices. The power storage devices are arranged in the module container with the positive electrode terminal and the negative electrode terminal facing upward, with the center position shifted in the arrangement direction for each column, and the positive electrode terminal and the negative electrode terminal between adjacent power storage devices are electrically conductive. They are connected by members.
　本発明に係る蓄電モジュールは、蓄電デバイスに劣化が生じてもモジュール容器が変形しにくいという効果を奏する。 The power storage module according to the present invention has an effect that the module container is not easily deformed even when the power storage device is deteriorated.
本発明の実施の形態１に係る蓄電モジュールの概略構成を示す図The figure which shows schematic structure of the electrical storage module which concerns on Embodiment 1 of this invention 実施の形態１に係る蓄電モジュールの蓄電池の構成を示す分解斜視図1 is an exploded perspective view showing a configuration of a storage battery of an electricity storage module according to Embodiment 1. FIG. 本発明の実施の形態２に係る蓄電モジュールの構成を示す図The figure which shows the structure of the electrical storage module which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る蓄電モジュールの構成を示す図The figure which shows the structure of the electrical storage module which concerns on Embodiment 3 of this invention. 本発明の実施の形態４に係る蓄電モジュールの構成を示す図The figure which shows the structure of the electrical storage module which concerns on Embodiment 4 of this invention. 実施の形態４に係る蓄電モジュールの蓄電池とモジュール容器の内壁との間のスペースにＣＭＵ基板を収納した構成を示す図The figure which shows the structure which accommodated the CMU board | substrate in the space between the storage battery of the electrical storage module which concerns on Embodiment 4, and the inner wall of a module container. 実施の形態４に係る蓄電モジュールの冷却パイプを内蔵するスペーサ板の斜視図The perspective view of the spacer board which incorporates the cooling pipe of the electrical storage module which concerns on Embodiment 4. FIG. 実施の形態４に係る蓄電モジュールのヒートシンクを備えたスペーサ板の斜視図The perspective view of the spacer board provided with the heat sink of the electrical storage module which concerns on Embodiment 4. FIG. 実施の形態４に係る蓄電モジュールの本体部と一体化したフィンを備えたスペーサ板の斜視図The perspective view of the spacer board provided with the fin integrated with the main-body part of the electrical storage module which concerns on Embodiment 4. FIG. 本発明の実施の形態５に係る蓄電モジュールの分解斜視図The disassembled perspective view of the electrical storage module which concerns on Embodiment 5 of this invention 本発明の実施の形態６に係る蓄電モジュールの分解斜視図The disassembled perspective view of the electrical storage module which concerns on Embodiment 6 of this invention
　以下に、本発明の実施の形態に係る蓄電モジュールを図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 Hereinafter, a power storage module according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.
実施の形態１．
　図１は、本発明の実施の形態１に係る蓄電モジュールの概略構成を示す図である。実施の形態１に係る蓄電モジュールは、電力を蓄積する蓄電デバイスである複数個の蓄電池１と、蓄電池１を収容し保持するモジュール容器５とを有する。蓄電池１は、正極端子２と負極端子３とを備えている。また、蓄電池１は、電池内部の圧力が開放圧力以上となった場合に開放して内部のガスを逃がすガス放出弁４を備えている。モジュール容器５は、金属又は樹脂製である。モジュール容器５は、複数個の蓄電池１の外枠を囲い、蓄電池１をとりまとめる機能を備えていれば良く、器状でなくても良い。 Embodiment 1 FIG.
FIG. 1 is a diagram showing a schematic configuration of the power storage module according to Embodiment 1 of the present invention. The power storage module according to Embodiment 1 includes a plurality of storage batteries 1 that are power storage devices that store electric power, and a module container 5 that houses and holds the storage battery 1. The storage battery 1 includes a positive electrode terminal 2 and a negative electrode terminal 3. The storage battery 1 is also provided with a gas release valve 4 that opens to release the internal gas when the internal pressure of the battery becomes equal to or higher than the open pressure. The module container 5 is made of metal or resin. The module container 5 may be provided with a function of enclosing the outer frames of the plurality of storage batteries 1 and collecting the storage batteries 1, and may not be a container shape.
　複数個の蓄電池１は、複数列に配列して設置されており、直列接続の場合、隣り合う列の蓄電池１同士の正極端子２と負極端子３とがバスバー１２で互いに接続されている。バスバー１２は、銅、アルミニウム又はニッケルなどの金属を材料とする板状又は棒状の金属板であり、蓄電池１同士又は蓄電池１と変換器とを接続する電力線の役割を担う。なお、蓄電池１の接続は直列接続に限らず、並列接続の場合は隣り合う複数の蓄電池の正極端子同士が接続されかつ負極端子同士が接続される。なお、バスバー１２は、ニッケル又はスズのめっきを施した銅を材料とすることも可能である。バスバー１２は、正極端子２又は負極端子３に通してねじ止めするものと、蓄電池１の正極端子２及び負極端子３に直接溶接されるものとがある。図１には隣り合う列の蓄電池１同士で正極端子２と負極端子３とを導電部材であるバスバー１２で接続した構成を示しているが、これに限らず、同じ列で隣り合う蓄電池１同士の正極端子２と負極端子３とをバスバー１２で相互に接続した構成であっても良い。 The plurality of storage batteries 1 are arranged in a plurality of rows, and in the case of series connection, the positive terminals 2 and the negative terminals 3 of the storage batteries 1 in adjacent rows are connected to each other by a bus bar 12. The bus bar 12 is a plate-like or bar-like metal plate made of a metal such as copper, aluminum, or nickel, and serves as a power line that connects the storage batteries 1 or the storage battery 1 and the converter. In addition, the connection of the storage battery 1 is not restricted to series connection, and in the case of parallel connection, the positive terminals of a plurality of adjacent storage batteries are connected and the negative terminals are connected. The bus bar 12 may be made of copper plated with nickel or tin. The bus bar 12 may be screwed through the positive terminal 2 or the negative terminal 3 and may be directly welded to the positive terminal 2 and the negative terminal 3 of the storage battery 1. FIG. 1 shows a configuration in which the positive terminals 2 and the negative terminals 3 are connected by the bus bars 12 that are conductive members between the storage batteries 1 in adjacent rows. The positive electrode terminal 2 and the negative electrode terminal 3 may be connected to each other by a bus bar 12.
　図２は、実施の形態１に係る蓄電モジュールの蓄電池の構成を示す分解斜視図である。蓄電池１は、電圧を発生させる巻回体６を電池容器１０内に収容し、電池蓋１１で密閉した構造である。巻回体６は、正極８と負極９と、正極８及び負極９を絶縁するセパレータ７ａ，７ｂとを、セパレータ７ａ、正極８、セパレータ７ｂ、負極９の順に重ねた上で巻いたものであり、角柱又はこれに準ずる形状である。なお、巻回体６は円柱状であっても良い。 FIG. 2 is an exploded perspective view showing the configuration of the storage battery of the power storage module according to Embodiment 1. FIG. The storage battery 1 has a structure in which a wound body 6 that generates a voltage is accommodated in a battery container 10 and sealed with a battery lid 11. The wound body 6 is obtained by winding a positive electrode 8, a negative electrode 9, and separators 7 a, 7 b that insulate the positive electrode 8 and the negative electrode 9 on each other in the order of the separator 7 a, the positive electrode 8, the separator 7 b, and the negative electrode 9. , A prismatic shape or a similar shape. The wound body 6 may be cylindrical.
　蓄電池１は、電池容器１０内に巻回体６を挿入し、電解液を注入した後に電池蓋１１を被せ、電池容器１０と電池蓋１１との間をレーザ溶接することによって形成されている。 The storage battery 1 is formed by inserting a wound body 6 into a battery container 10, injecting an electrolytic solution, covering the battery cover 11, and laser welding between the battery container 10 and the battery cover 11.
　電池容器１０は、アルミニウム、ステンレス又は鉄といった金属製であり、一般的には角型又は円筒形状であるが、ここでは角型であるとする。 The battery container 10 is made of a metal such as aluminum, stainless steel, or iron, and generally has a square shape or a cylindrical shape.
　正極端子２は、アルミニウムで形成することができる。負極端子３は、アルミニウム、銅又はニッケルめっきを施した銅で形成することができる。なお、正極端子２及び負極端子３の材料は、上記の材料に限定されることはない。 The positive electrode terminal 2 can be formed of aluminum. The negative electrode terminal 3 can be formed of aluminum, copper, or copper plated with nickel. In addition, the material of the positive electrode terminal 2 and the negative electrode terminal 3 is not limited to said material.
　一般に、リチウムイオン二次電池を始めとする蓄電デバイスは、長期使用に伴って蓄電容量が減少する劣化が生じる。劣化が生じた蓄電デバイスは、内部における反応により生じたガスの発生及び充放電の繰り返しによる電極厚さの増大といった原因により変形する。蓄電デバイスの劣化は、運転条件及び環境により変化するが、多くの場合、劣化により蓄電デバイスの容器が膨張する。容器内でのガスの発生によって電極間に隙間が生じ密着性が低下すると、反応が不均一になって蓄電デバイスの劣化がさらに進行しやすくなる。劣化度合い及び運転条件により容器の膨れ方は様々であるが、角型、パウチ型又は円筒型の蓄電デバイスは劣化に伴い広幅面の中央部を中心に膨れ、厚さが増加して太鼓状に変形する場合がある。角型、パウチ型又は長円筒型の場合、モジュール容器から押圧力が加わること、及び蓄電デバイス内部の電極体の端部が拘束されていることにより、面積が最も広い面の中央部において厚さ増加量が最大になりやすい。 In general, power storage devices such as lithium ion secondary batteries are subject to deterioration in which the power storage capacity decreases with long-term use. Deteriorated power storage devices are deformed due to the generation of gas generated by internal reactions and the increase in electrode thickness due to repeated charge and discharge. The deterioration of the electricity storage device varies depending on the operating conditions and the environment, but in many cases, the container of the electricity storage device expands due to the deterioration. If the gap is generated between the electrodes due to the generation of gas in the container and the adhesion is reduced, the reaction becomes non-uniform and the deterioration of the electricity storage device further proceeds. Depending on the degree of deterioration and the operating conditions, the container swells in various ways, but square, pouch-type, or cylindrical-type power storage devices swell around the center of the wide surface as they deteriorate, increasing their thickness to a drum shape. It may be deformed. In the case of a square type, a pouch type, or a long cylindrical type, a thickness is applied at the central portion of the surface having the largest area due to the pressing force applied from the module container and the end of the electrode body inside the power storage device being constrained. The increase is likely to be maximized.
　実施の形態１に係る蓄電モジュールにおいて蓄電デバイスに用いた蓄電池１は、ガス放出弁４の開放圧力は蓄電池１の種類によるが、開放圧力が低すぎるとすぐに開放してしまう。蓄電池１は、一旦開放すると外部から空気及び水分が混入して電池の特性が低下するため、使用を中断して交換するなどの処置が必要となる。このため、蓄電池１は、ガス放出弁４の開放圧力が高く設定され、内部の圧力がガス放出弁４の開放圧力に達する前に電池容器１０が膨張することが多い。 In the storage battery 1 used in the storage device in the storage module according to Embodiment 1, the opening pressure of the gas release valve 4 depends on the type of the storage battery 1, but opens immediately if the opening pressure is too low. Once the storage battery 1 is opened, air and moisture are mixed from the outside and the characteristics of the battery deteriorate. Therefore, it is necessary to take measures such as discontinuing use and replacing the battery. For this reason, in the storage battery 1, the opening pressure of the gas release valve 4 is set high, and the battery container 10 often expands before the internal pressure reaches the opening pressure of the gas release valve 4.
　実施の形態１においては、複数の蓄電池１を、広幅面１ｗの端部１ｅを揃えるのではなく、端部１ｅと中央部１ｃとが向き合うようにずらして２列でモジュール容器５内に配置している。膨れが生じやすい電池容器１０の中央部１ｃと対向する位置に膨れが生じにくい端部１ｅが配置されるように隣接する列の蓄電池１を配列方向に沿ってずらして設置することで、広幅面１ｗの中央部１ｃの膨れ同士が重なることによるモジュール容器５の変形を抑制し、正極端子２、負極端子３、及びその接続部にかかる応力の増大を抑え、正極端子２及び負極端子３の接続部分の緩み及びはずれを防止するとともに、モジュール容器５の変形を抑えることができる。これによって蓄電池１の劣化を抑制するとともに、モジュール容器５の軽量化が可能となる。さらに、モジュール容器５で蓄電池１を周囲から拘束することによって、蓄電池１の膨れを抑制し、劣化の進行を抑えることが可能となる。 In Embodiment 1, the plurality of storage batteries 1 are arranged in the module container 5 in two rows by shifting the end portions 1e and the central portion 1c so that the end portions 1e of the wide surface 1w are not aligned. ing. By arranging the storage batteries 1 in adjacent rows so as to be arranged in the arrangement direction so that the end portion 1e that is unlikely to bulge is disposed at a position facing the central portion 1c of the battery container 10 that is liable to bulge, Connection of the positive electrode terminal 2 and the negative electrode terminal 3 is suppressed by suppressing deformation of the module container 5 due to overlapping of the bulges of the central portion 1c of 1w, and suppressing an increase in stress applied to the positive electrode terminal 2, the negative electrode terminal 3, and its connecting portion. While preventing the part from loosening and coming off, deformation of the module container 5 can be suppressed. As a result, deterioration of the storage battery 1 can be suppressed, and the module container 5 can be reduced in weight. Furthermore, by restraining the storage battery 1 from the periphery with the module container 5, it becomes possible to suppress the swelling of the storage battery 1 and to suppress the progress of deterioration.
　上記の説明では、電池容器１０は角型であるとしたが、アルミニウム膜と樹脂膜とを積層して密着させたラミネートフィルムを用いたパウチ型であっても良い。 In the above description, the battery container 10 is a square type, but it may be a pouch type using a laminate film in which an aluminum film and a resin film are laminated and adhered.
　上記の説明では、蓄電池１がバスバー１２で接続されているとしたが、バスバー１２の代わりに銅又はアルミニウムの細線のより線を絶縁体又は防食層で覆った電力ケーブルを導電部材に用いることも可能である。また、上記の説明では、蓄電池１がバスバー１２で接続されているとしたが、蓄電池１の端子がネジ留めでなく、溶接されていても良い。 In the above description, the storage battery 1 is connected by the bus bar 12. However, instead of the bus bar 12, a power cable in which a stranded wire of copper or aluminum is covered with an insulator or an anticorrosive layer may be used as the conductive member. Is possible. In the above description, the storage battery 1 is connected by the bus bar 12, but the terminal of the storage battery 1 may be welded instead of screwed.
　また、上記の説明では、複数の蓄電池１を２列に並べた構成を示したが、列数は２列よりも多くても良い。蓄電池１がパウチ型のような薄型の場合は、複数列並べることも可能である。モジュール内に配置する蓄電池１の数についても図１に示した８個に限定されることはない。 In the above description, a configuration in which a plurality of storage batteries 1 are arranged in two rows is shown, but the number of columns may be larger than two. When the storage battery 1 is thin like a pouch type, a plurality of rows can be arranged. The number of storage batteries 1 arranged in the module is not limited to eight shown in FIG.
また、上記の説明では電池容器１０に巻回体６を収容し、電解液を注入した後に電池蓋１１を被せた蓄電池１を例としたが、蓄電池１は、正極、セパレータ及び負極を交互に積層して作製した積層体を電池容器に収納し、電解液を注入して封口した構造であってもよい。 Further, in the above description, the storage battery 1 in which the wound body 6 is housed in the battery container 10 and the electrolytic solution is injected and then the battery cover 11 is put on is taken as an example. However, the storage battery 1 has a positive electrode, a separator, and a negative electrode alternately. The laminated body produced by laminating | stacking may be accommodated in a battery container, and the structure which inject | poured and sealed electrolyte solution may be sufficient.
　実施の形態１に係る蓄電モジュールは、膨れによる変形量が大きい広幅面１ｗの中央部１ｃ同士が重ならないように蓄電池１を配置しているため、モジュール容器５の変形を抑制し、蓄電池１の劣化の進行を抑えることができる。 In the power storage module according to Embodiment 1, the storage battery 1 is arranged so that the central portions 1c of the wide surface 1w having a large amount of deformation due to swelling do not overlap with each other. Progress of deterioration can be suppressed.
実施の形態２．
　図３は、本発明の実施の形態２に係る蓄電モジュールの構成を示す図である。実施の形態２においては、同じ列で隣り合う蓄電池１の側面１ｓ同士の間に隙間を設けて蓄電池を配置している点で実施の形態１と相違している。側面１ｓ同士の間に間隔を設けることにより、蓄電池１から効率的に放熱することが可能となり、蓄電池１の温度上昇を抑制して劣化を抑えることができる。また、ファンなどの送風により冷却する際に、蓄電池１間に冷却流路ができ、蓄電池１を効率的に冷却できる。この他については、実施の形態１と同様である。 Embodiment 2. FIG.
FIG. 3 is a diagram showing a configuration of the power storage module according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the storage battery is disposed with a gap provided between the side surfaces 1s of the storage batteries 1 adjacent in the same row. By providing an interval between the side surfaces 1 s, it is possible to efficiently dissipate heat from the storage battery 1, and it is possible to suppress a temperature rise of the storage battery 1 and suppress deterioration. Moreover, when cooling by ventilation, such as a fan, a cooling flow path is made between the storage batteries 1, and the storage battery 1 can be cooled efficiently. Others are the same as in the first embodiment.
実施の形態３．
　図４は、本発明の実施の形態３に係る蓄電モジュールの構成を示す図である。図４では、モジュール容器５を切り欠いて内部の蓄電池１を可視化して示している。実施の形態３においては、モジュール容器５の蓋１３にファン１４を取り付け、蓄電池１の端子上部から送風により蓄電池１を冷却している点で実施の形態１と相違している。蓄電池１は、電池の外部に突出している正極端子２及び負極端子３が内部の正極８及び負極９と接続されている。このため、正極端子２又は負極端子３を冷却することにより、蓄電池１の内部を効率的に冷却することが可能となる。この他については、実施の形態１と同様である。 Embodiment 3 FIG.
FIG. 4 is a diagram showing the configuration of the power storage module according to Embodiment 3 of the present invention. In FIG. 4, the module battery 5 is notched and the internal storage battery 1 is visualized. The third embodiment is different from the first embodiment in that a fan 14 is attached to the lid 13 of the module container 5 and the storage battery 1 is cooled by blowing air from the upper part of the terminal of the storage battery 1. In the storage battery 1, a positive electrode terminal 2 and a negative electrode terminal 3 protruding to the outside of the battery are connected to an internal positive electrode 8 and a negative electrode 9. For this reason, it becomes possible to cool the inside of the storage battery 1 efficiently by cooling the positive electrode terminal 2 or the negative electrode terminal 3. Others are the same as in the first embodiment.
実施の形態４．
　図５は、本発明の実施の形態４に係る蓄電モジュールの構成を示す図である。実施の形態４においては、蓄電池１の対向する広幅面１ｗ同士の間に蓄電池１に密着してスペーサ板１５を配置している点で実施の形態２と相違している。蓄電池１の列同士の間にスペーサ板１５を設置することにより、対向する蓄電池１の膨れを抑制しスペーサ板１５とモジュール容器５の間で蓄電池１を加圧することにより蓄電池１の膨れを抑え、劣化を抑制する。スペーサ板１５の素材は特に限定されないが、ある程度の強度を持った熱伝導性の良好な金属板、又は金属とカーボンとの複合体を板状又はシート状に成型したものが望ましい。即ち、蓄電池１が膨れた時のスペーサ板１５への押圧力により変形しない強度を有するものが好ましい。隣接する列の蓄電池１同士の間にスペーサ板１５を設けることにより、蓄電池１を効率的に冷却し、蓄電池１の劣化を抑えることができる。 Embodiment 4 FIG.
FIG. 5 is a diagram showing the configuration of the power storage module according to Embodiment 4 of the present invention. The fourth embodiment is different from the second embodiment in that the spacer plate 15 is disposed in close contact with the storage battery 1 between the opposing wide surfaces 1w of the storage battery 1. By installing the spacer plate 15 between the rows of the storage batteries 1, the swelling of the opposing storage batteries 1 is suppressed, and by pressing the storage battery 1 between the spacer plate 15 and the module container 5, the swelling of the storage batteries 1 is suppressed, Suppress deterioration. The material of the spacer plate 15 is not particularly limited, but a metal plate having a certain degree of strength and good thermal conductivity, or a composite of metal and carbon formed into a plate shape or a sheet shape is desirable. That is, it is preferable that the battery 1 has a strength that does not deform due to the pressing force to the spacer plate 15 when the storage battery 1 swells. By providing the spacer plate 15 between the storage batteries 1 in adjacent rows, the storage battery 1 can be efficiently cooled and deterioration of the storage battery 1 can be suppressed.
　スペーサ板１５の高さは、蓄電池１の高さより低いことが好ましい。スペーサ板１５の高さを低くすることにより、蓄電モジュール自体を軽量化するとともに、スペーサ板１５の上部のスペースに計測線などを収納することができる。 The height of the spacer plate 15 is preferably lower than the height of the storage battery 1. By reducing the height of the spacer plate 15, the power storage module itself can be reduced in weight, and a measurement line or the like can be stored in the space above the spacer plate 15.
　また、端位置の蓄電池１に対向するスペースには、蓄電池１の温度及び電圧を計測して上位基板と通信を行うセル監視ユニット（Ｃｅｌｌ　Ｍｏｎｉｔｏｒｉｎｇ　Ｕｎｉｔ，ＣＭＵ）基板、通信線、端子台、電流ヒューズ、温度ヒューズといった計測部材を収納することが可能である。なお、計測部材は、蓄電モジュールが負荷に電力を供給するために必要となるモジュール状態の計測及び負荷との通信のために必要となる部材の総称である。図６は、実施の形態４に係る蓄電モジュールの蓄電池とモジュール容器の内壁との間のスペースにＣＭＵ基板を収納した構成を示す図である。蓄電池１を交互にずらして配置しているため、蓄電モジュール容器５の端部に空きスペースができる。このスペースにＣＭＵ基板２０のような計測部材を設置することで、モジュール容器５内部の空間を有効に活用できる。 Also, in the space facing the storage battery 1 at the end position, a cell monitoring unit (CMU) board that measures the temperature and voltage of the storage battery 1 and communicates with the upper board, a communication line, a terminal block, a current fuse It is possible to accommodate a measurement member such as a thermal fuse. Note that the measurement member is a generic name for members that are required for measurement of a module state that is necessary for the power storage module to supply power to the load and for communication with the load. FIG. 6 is a diagram illustrating a configuration in which a CMU substrate is accommodated in a space between the storage battery of the power storage module according to Embodiment 4 and the inner wall of the module container. Since the storage batteries 1 are alternately shifted, an empty space is created at the end of the power storage module container 5. By installing a measurement member such as the CMU substrate 20 in this space, the space inside the module container 5 can be used effectively.
　スペーサ板１５には、蓄電池１を冷却する放熱構造を付加することもできる。スペーサ板１５に放熱構造を付加することにより、蓄電１を効率的に冷却し、劣化を抑えることができる。図７は、実施の形態４に係る蓄電モジュールの冷却パイプを内蔵するスペーサ板の斜視図である。スペーサ板１５の内部に冷却パイプ１６が内蔵されており、冷却パイプ１６の中に冷媒を流して蓄電池を冷却することが可能となっている。冷却パイプ１６は銅、真鍮又はアルミニウムといった熱伝導の良好な材料で作製されることが望ましい。また、冷却パイプ１６を内蔵するのではなく、スペーサ板１５に切削加工を施したり、押出し加工でスペーサ板１４を作成するなどして、冷媒が通る流路をスペーサ板１５に設けることも可能である。 A heat dissipation structure for cooling the storage battery 1 can be added to the spacer plate 15. By adding a heat dissipation structure to the spacer plate 15, the power storage 1 can be efficiently cooled and deterioration can be suppressed. FIG. 7 is a perspective view of a spacer plate incorporating a cooling pipe of the power storage module according to the fourth embodiment. A cooling pipe 16 is built in the spacer plate 15, and the storage battery can be cooled by flowing a coolant through the cooling pipe 16. The cooling pipe 16 is preferably made of a material having good heat conductivity such as copper, brass or aluminum. Further, instead of incorporating the cooling pipe 16, it is possible to provide the spacer plate 15 with a flow path through which the coolant passes by cutting the spacer plate 15 or creating the spacer plate 14 by extrusion. is there.
　図８は、実施の形態４に係る蓄電モジュールのヒートシンクを備えたスペーサ板の斜視図である。スペーサ板１５の内部に複数の板状のヒートシンク１７が形成されているため、スペーサ板１５の手前方向からファンなどによって、送風による冷却を行うことにより蓄電池１から発生した熱を効率的に外部に逃がすことができる。 FIG. 8 is a perspective view of the spacer plate provided with the heat sink of the power storage module according to the fourth embodiment. Since a plurality of plate-like heat sinks 17 are formed inside the spacer plate 15, the heat generated from the storage battery 1 can be efficiently transferred to the outside by performing cooling by blowing with a fan or the like from the front side of the spacer plate 15. I can escape.
　図９は、実施の形態４に係る蓄電モジュールの本体部と一体化したフィンを備えたスペーサ板の斜視図である。なお、図９には、蓄電池１を合わせて図示している。スペーサ板１５には、本体部１５ａと一体化したフィン１５ｂが本体部１５ａに対して垂直に形成されている。スペーサ板１５は、中心となる本体部１５ａから、枝分かれしたフィン１５ｂが蓄電池１同士の隙間に設置されるような配置で形成されている。この場合、蓄電池１の広幅面１ｗからスペーサ板１５へ伝わった熱はフィン１５ｂにより放熱される。これにより、蓄電池１から発生した熱を効率的に外部に逃がすことができる。 FIG. 9 is a perspective view of a spacer plate provided with fins integrated with the main body of the power storage module according to the fourth embodiment. In FIG. 9, the storage battery 1 is also illustrated. The spacer plate 15 is formed with fins 15b integrated with the main body 15a perpendicular to the main body 15a. The spacer plate 15 is formed in such an arrangement that the branched fins 15b are installed in the gap between the storage batteries 1 from the main body portion 15a as the center. In this case, the heat transferred from the wide surface 1w of the storage battery 1 to the spacer plate 15 is radiated by the fins 15b. Thereby, the heat generated from the storage battery 1 can be efficiently released to the outside.
実施の形態５．
　図１０は、本発明の実施の形態５に係る蓄電モジュールの分解斜視図である。実施の形態５に係る蓄電モジュールは、モジュール容器５の底面５１が、蓄電池１の底面形状に沿ったガイド１８及び冷却のための通気孔５１ａを設けた構造となっている点で実施の形態２と相違している。ガイド１８は、底面５１に蓄電池１の形状に対応する凹部を形成することによって設けられている。ガイド１８により、蓄電池１の位置決めを容易にして組立性を高めるとともに、蓄電池１のずれ及び傾きを防止することができる。また、通気孔５１を設けて底面５１の通気性を高めることで、モジュール容器５内部の温度上昇が抑制でき、蓄電池１の劣化が抑制できる。 Embodiment 5 FIG.
FIG. 10 is an exploded perspective view of the power storage module according to Embodiment 5 of the present invention. The power storage module according to the fifth embodiment is the second embodiment in that the bottom surface 51 of the module container 5 has a structure in which the guide 18 along the bottom surface shape of the storage battery 1 and the air vent 51a for cooling are provided. Is different. The guide 18 is provided by forming a recess corresponding to the shape of the storage battery 1 on the bottom surface 51. The guide 18 facilitates the positioning of the storage battery 1 to improve the assemblability, and prevents the storage battery 1 from being displaced and inclined. Moreover, by providing the air vent 51 and improving the air permeability of the bottom surface 51, the temperature rise inside the module container 5 can be suppressed, and the deterioration of the storage battery 1 can be suppressed.
実施の形態６．
　図１１は、本発明の実施の形態６に係る蓄電モジュールの分解斜視図である。なお、図１１では、モジュール容器５は、底面５１以外は図示を省略している。実施の形態６に係る蓄電モジュールは、モジュール容器５の底面５１にスペーサ板１５をはめ込むためのガイド１９が形成されている点で実施の形態２と相違している。ガイド１９に従ってスペーサ板１５をはめ込むことによって、蓄電池１を押圧することが可能となっている。実施の形態６においても、実施の形態５と同様に、蓄電池１のずれ及び傾きを防止することができる。また、底面５１を通気性が良い構造とすることで、蓄電モジュールの温度上昇が抑制でき、蓄電池１の劣化が抑制できる。 Embodiment 6 FIG.
FIG. 11 is an exploded perspective view of the power storage module according to Embodiment 6 of the present invention. In FIG. 11, the module container 5 is not shown except for the bottom surface 51. The power storage module according to the sixth embodiment is different from the second embodiment in that a guide 19 for fitting the spacer plate 15 to the bottom surface 51 of the module container 5 is formed. The storage battery 1 can be pressed by fitting the spacer plate 15 in accordance with the guide 19. In the sixth embodiment as well, similarly to the fifth embodiment, the shift and inclination of the storage battery 1 can be prevented. Moreover, by making the bottom surface 51 into a structure with good air permeability, the temperature rise of the power storage module can be suppressed, and the deterioration of the storage battery 1 can be suppressed.
　以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
　１　蓄電池、１ｃ　中央部、１ｅ　端部、１ｓ　側面、１ｗ　広幅面、２　正極端子、３　負極端子、４　ガス放出弁、５　モジュール容器、６　巻回体、７ａ，７ｂ　セパレータ、８　正極、９　負極、１０　電池容器、１１　電池蓋、１２　バスバー、１３　蓋、１４　ファン、１５　スペーサ板、１５ａ　本体部、１５ｂ　フィン、１６　冷却パイプ、１７　ヒートシンク、１８，１９　ガイド、２０　ＣＭＵ基板、５１　底面、５１ａ　通気孔。 1 storage battery, 1c center part, 1e end part, 1s side face, 1w wide face, 2 positive electrode terminal, 3 negative electrode terminal, 4 gas release valve, 5 module container, 6 rolls, 7a, 7b separator, 8 positive electrode, 9 negative electrode 10, battery container, 11 battery cover, 12 bus bar, 13 cover, 14 fan, 15 spacer plate, 15a main body, 15b fin, 16 cooling pipe, 17 heat sink, 18, 19 guide, 20 CMU substrate, 51 bottom surface, 51a through Pores.

Claims (8)

  1. 　複数列に配列して設置された複数の蓄電デバイスと、該複数の蓄電デバイスを保持するモジュール容器とを有する蓄電モジュールであって、
    　前記蓄電デバイスは、正極端子及び負極端子を上にした姿勢で、列ごとに中心位置を配列方向にずらして前記モジュール容器内に配置され、隣り合う前記蓄電デバイス同士の前記正極端子と前記負極端子とが導電部材で接続されていることを特徴とする蓄電モジュール。     A power storage module having a plurality of power storage devices arranged in a plurality of rows and a module container holding the plurality of power storage devices,
    The power storage device is disposed in the module container with the positive electrode terminal and the negative electrode terminal facing upward, with the center position shifted in the arrangement direction for each column, and the positive electrode terminal and the negative electrode terminal between the adjacent power storage devices Are connected by a conductive member.
  2. 　同じ列で隣り合う前記蓄電デバイスの側面の間に間隙を設けたことを特徴とする請求項１に記載の蓄電モジュール。 The power storage module according to claim 1, wherein a gap is provided between side surfaces of the power storage devices adjacent in the same row.
  3. 　前記正極端子及び前記負極端子に冷却風を送るファンを有することを特徴とする請求項１に記載の蓄電モジュール。 The power storage module according to claim 1, further comprising a fan that sends cooling air to the positive terminal and the negative terminal.
  4. 　前記蓄電デバイスの列同士の間に設置されたスペーサ板を備えることを特徴とする請求項１に記載の蓄電モジュール。 The power storage module according to claim 1, further comprising a spacer plate installed between the rows of the power storage devices.
  5. 　前記スペーサ板は、放熱構造を持つことを特徴とする請求項４に記載の蓄電モジュール。 5. The power storage module according to claim 4, wherein the spacer plate has a heat dissipation structure.
  6. 　前記モジュール容器の底面に設けられたガイドによって前記蓄電デバイスの間隔が固定されていることを特徴とする請求項１に記載の蓄電モジュール。 The power storage module according to claim 1, wherein a distance between the power storage devices is fixed by a guide provided on a bottom surface of the module container.
  7. 　前記底面に、通気孔が設けられていることを特徴とする請求項６に記載の蓄電モジュール。 The electric storage module according to claim 6, wherein a vent hole is provided on the bottom surface.
  8. 　前記モジュール容器と前記蓄電デバイスとの間の空間に計測部材を収容したことを特徴とする請求項１から７のいずれか１項に記載の蓄電モジュール。 The power storage module according to any one of claims 1 to 7, wherein a measurement member is accommodated in a space between the module container and the power storage device.
PCT/JP2016/050383 2016-01-07 2016-01-07 Power storage module WO2017119106A1 (en)

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