JP6070997B2 - Power storage device - Google Patents

Power storage device Download PDF

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JP6070997B2
JP6070997B2 JP2013128694A JP2013128694A JP6070997B2 JP 6070997 B2 JP6070997 B2 JP 6070997B2 JP 2013128694 A JP2013128694 A JP 2013128694A JP 2013128694 A JP2013128694 A JP 2013128694A JP 6070997 B2 JP6070997 B2 JP 6070997B2
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power storage
storage module
stacking direction
positioning pin
plates
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JP2015005356A (en
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伸章 石橋
伸章 石橋
広一 高橋
広一 高橋
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Honda Motor Co Ltd
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    • 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
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • 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
    • 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
    • H01G11/12—Stacked hybrid or EDL capacitors
    • 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
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H01G11/18—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
    • 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
    • H01G11/74—Terminals, e.g. extensions of current collectors
    • H01G11/76—Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
    • 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
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • 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
    • H01M10/65—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
    • 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
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • 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
    • H01M50/262—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
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Description

本発明は、複数の角形の蓄電セルを積層方向に積層して蓄電モジュールを構成し、積層方向に対して交差する方向に並置した複数の前記蓄電モジュールを積層方向両側に配置した少なくとも二つの連結プレート間に挟持し、前記少なくとも二つの連結プレートのうちの少なくとも一つの連結プレートを前記複数の蓄電モジュールに締結部材により積層方向に締結する蓄電装置に関する。   The present invention comprises a plurality of rectangular storage cells stacked in a stacking direction to form a storage module, and a plurality of the storage modules juxtaposed in a direction intersecting the stacking direction are arranged on both sides in the stacking direction. The present invention relates to a power storage device that is sandwiched between plates and fastens at least one of the at least two connection plates to the plurality of power storage modules in a stacking direction by a fastening member.

積層した複数の蓄電セルの外側に一対のエンドプレートを重ね合わせたものをスタックメンバで一体に締結して蓄電モジュールを構成し、蓄電モジュールの一対のエンドプレートの積層方向外側に重ね合わせた一対の補強部材の下端を外向きに折り曲げた取付フランジを、一対の支持プレートに植設したスタッドボルトに嵌合してナットで締結するものが、下記特許文献１により公知である。   A pair of end plates stacked on the outside of a plurality of stacked storage cells are fastened together with a stack member to form a storage module, and a pair of stacked end plates of the storage module are stacked on the outside in the stacking direction. Japanese Patent Application Laid-Open No. 2004-151820 discloses a fitting flange in which a lower end of a reinforcing member is bent outward and fitted to a stud bolt planted on a pair of support plates and fastened with a nut.

特開２０１０−２７２５２０号公報JP 2010-272520 A

ところで、複数の蓄電モジュールを一対の連結プレート間に挟持し、連結プレートを貫通させたボルトを蓄電モジュールのエンドプレートに螺合することで、複数の蓄電モジュールを連結プレートに締結して蓄電装置を構成することが考えられる。   By the way, by sandwiching a plurality of power storage modules between a pair of connection plates and screwing bolts penetrating the connection plates into the end plates of the power storage modules, the plurality of power storage modules are fastened to the connection plates to It is conceivable to configure.

この場合、前記ボルトを締め付けるトルクにより、そのボルトまわりに蓄電モジュールが回転してしまうため、蓄電モジュールを一定の姿勢で連結プレートに締結することが難しくなり、蓄電装置の組み立て作業の作業性が低下する可能性がある。特に、蓄電モジュールの表面にシール部材を当接させて冷却空気を流通させる冷却空気通路を構成する場合、蓄電モジュールが傾いた姿勢のまま連結プレートに固定されてしまうと、シール部材が不均一に圧縮されて冷却空気の漏れが発生する可能性がある。   In this case, since the power storage module rotates around the bolt due to the torque for tightening the bolt, it is difficult to fasten the power storage module to the connection plate in a fixed posture, and the workability of the assembly operation of the power storage device is reduced. there's a possibility that. In particular, when a cooling air passage is formed in which the sealing member is brought into contact with the surface of the power storage module and the cooling air is circulated, if the power storage module is fixed to the connection plate in an inclined posture, the sealing member becomes uneven. Compressed air may leak due to compression.

本発明は前述の事情に鑑みてなされたもので、蓄電モジュールの端部を連結プレートにねじ締結部材で締結する際に、ねじ締結部材の締結トルクで蓄電モジュールが回転して姿勢が乱れるのを防止することを目的とする。 The present invention has been made in view of the above-described circumstances. When the end of the power storage module is fastened to the connection plate with the screw fastening member , the power storage module is rotated by the fastening torque of the screw fastening member and the posture is disturbed. The purpose is to prevent.

上記目的を達成するために、請求項１に記載された発明によれば、複数の角形の蓄電セルを積層方向に積層して蓄電モジュールを構成し、積層方向に対して交差する方向に並置した複数の前記蓄電モジュールを積層方向両側に配置した少なくとも二つの連結プレート間に挟持し、前記少なくとも二つの連結プレートのうちの少なくとも一つの連結プレートを前記複数の蓄電モジュールにねじ締結部材により積層方向に締結する蓄電装置であって、前記蓄電モジュールはその積層方向端部から前記少なくとも一つの連結プレートに向かって突出する位置決めピンを備え、前記少なくとも一つの連結プレートは前記蓄電モジュールを挟持した状態で前記位置決めピンが挿入される挿入凹部を備えることを特徴とする蓄電装置が提案される。 To achieve the above object, according to the invention described in claim 1, a plurality of rectangular storage cells are stacked in the stacking direction to form a storage module, and are juxtaposed in a direction intersecting the stacking direction. The plurality of power storage modules are sandwiched between at least two connection plates arranged on both sides in the stacking direction, and at least one of the at least two connection plates is attached to the plurality of power storage modules in the stacking direction by screw fastening members. A power storage device to be fastened, wherein the power storage module includes a positioning pin that protrudes from an end in a stacking direction toward the at least one connection plate, and the at least one connection plate holds the power storage module in a state of sandwiching the power storage module. A power storage device including an insertion recess into which a positioning pin is inserted is proposed.

また請求項２に記載された発明によれば、請求項１の構成に加えて、前記複数の蓄電モジュールに冷却風を供給あるいは排出するための複数の冷却孔が形成されたダクト部材を前記少なくとも二つの連結プレートに固定し、前記冷却孔の周囲に前記蓄電モジュールとの間をシールするシール部材を設けたことを特徴とする蓄電装置が提案される。   According to the invention described in claim 2, in addition to the structure of claim 1, the duct member in which a plurality of cooling holes for supplying or discharging cooling air to or from the plurality of power storage modules is formed at least. A power storage device is proposed, which is fixed to two connecting plates, and a sealing member is provided around the cooling hole to seal between the power storage modules.

また請求項３に記載された発明によれば、請求項２の構成に加えて、前記挿入凹部の鉛直方向上側部分の直径は、前記蓄電モジュールの締結状態において前記位置決めピンが係合する前記挿入凹部の鉛直方向下側部分の直径よりも大きいことを特徴とする蓄電装置が提案される。   According to the invention described in claim 3, in addition to the configuration of claim 2, the diameter of the upper portion in the vertical direction of the insertion recess is set so that the positioning pin engages in the fastening state of the power storage module. A power storage device is proposed that is larger than the diameter of the lower portion of the recess in the vertical direction.

また請求項４に記載された発明によれば、請求項１〜請求項３の何れか１項の構成に加えて、前記挿入凹部は貫通孔であることを特徴とする蓄電装置が提案される。   According to the invention described in claim 4, in addition to the configuration of any one of claims 1 to 3, a power storage device is proposed in which the insertion recess is a through hole. .

また請求項５に記載された発明によれば、複数の角形の蓄電セルを積層方向に積層して蓄電モジュールを構成し、積層方向に対して交差する方向に並置した複数の前記蓄電モジュールを積層方向両側に配置した少なくとも二つの連結プレート間に挟持し、前記少なくとも二つの連結プレートのうちの少なくとも一つの連結プレートを前記複数の蓄電モジュールにねじ締結部材により積層方向に締結する蓄電装置であって、前記少なくとも一つの連結プレートは前記蓄電モジュールに向かって突出する位置決めピンを備え、前記蓄電モジュールは前記少なくとも二つの連結プレートに挟持された状態で前記位置決めピンが挿入される挿入凹部を備えることを特徴とする蓄電装置が提案される。 According to the invention described in claim 5, a plurality of prismatic power storage cells are stacked in the stacking direction to form a power storage module, and the plurality of power storage modules juxtaposed in a direction crossing the stacking direction are stacked. A power storage device that is sandwiched between at least two connection plates arranged on both sides in the direction and fastens at least one of the at least two connection plates to the plurality of power storage modules in a stacking direction by screw fastening members. The at least one connection plate includes a positioning pin protruding toward the power storage module, and the power storage module includes an insertion recess into which the positioning pin is inserted while being sandwiched between the at least two connection plates. A characteristic power storage device is proposed.

尚、実施の形態の位置決め孔１４ａ、窪み１４ｂ、位置決め孔２６ｂおよび窪み２６ｅは本発明の挿入凹部に対応し、実施の形態のアッパーダクト２７およびロアダクト２８は本発明のダクト部材に対応し、実施の形態のボルト２９は本発明のねじ締結部材に対応する。 The positioning hole 14a, the recess 14b, the positioning hole 26b, and the recess 26e of the embodiment correspond to the insertion recess of the present invention, and the upper duct 27 and the lower duct 28 of the embodiment correspond to the duct member of the present invention. The bolt 29 of the form corresponds to the screw fastening member of the present invention.

請求項１または請求項５の構成によれば、蓄電装置は、複数の角形の蓄電セルを積層方向に積層して蓄電モジュールを構成し、積層方向に対して交差する方向に並置した複数の蓄電モジュールを、積層方向両側に配置した少なくとも二つの連結プレート間に挟持してねじ締結部材により一体に締結して構成される。少なくとも二つの連結プレートのうちの少なくとも一つの連結プレートは蓄電モジュールにねじ締結部材により積層方向に締結されるので、連結プレートの形状を特に工夫しなくても、ねじ締結部材を操作するための工具と連結プレートとの間の距離を充分に確保することができ、締結作業の作業性向上および連結プレートの小型化が可能となる。 According to the configuration of claim 1 or claim 5, the power storage device forms a power storage module by stacking a plurality of rectangular storage cells in the stacking direction, and stores a plurality of power storages juxtaposed in a direction intersecting the stacking direction. The module is configured to be sandwiched between at least two connecting plates arranged on both sides in the stacking direction and integrally fastened by a screw fastening member . Since at least one of the at least two connection plates is fastened to the power storage module by the screw fastening member in the stacking direction, a tool for operating the screw fastening member without specially designing the shape of the connection plate A sufficient distance can be ensured between the connecting plate and the connecting plate, so that the workability of the fastening operation can be improved and the connecting plate can be reduced in size.

特に、請求項１の構成によれば、蓄電モジュールはその積層方向端部から少なくとも一つの連結プレートに向かって突出する位置決めピンを備え、連結プレートは蓄電モジュールを挟持した状態で位置決めピンが挿入される挿入凹部を備えるので、ねじ締結部材で連結プレートを蓄電モジュールに締結する際に、ねじ締結部材の締結トルクで蓄電モジュールが回転するのを防止して組付性を高めることができる。 In particular, according to the configuration of claim 1, the power storage module includes a positioning pin that protrudes from an end portion in the stacking direction toward at least one connection plate, and the connection plate is inserted with the positioning pin sandwiched between the power storage modules. since comprises insertion recess that, when fastening the connection plate to the battery module by a screw fastening member, it is possible to enhance the assemblability and prevent rotation of power storage module by a fastening torque of the screw fastener.

特に、請求項５の構成によれば、少なくとも一つの連結プレートは蓄電モジュールに向かって突出する位置決めピンを備え、蓄電モジュールは少なくとも二つの連結プレートに挟持された状態で位置決めピンが挿入される挿入凹部を備えるので、ねじ締結部材で連結プレートを蓄電モジュールに締結する際に、ねじ締結部材の締結トルクで蓄電モジュールが回転するのを防止して組付性を高めることができる。 In particular, according to the configuration of claim 5, at least one connection plate includes a positioning pin protruding toward the power storage module, and the power storage module is inserted into which the positioning pin is inserted while being sandwiched between at least two connection plates. since a recess, when fastening the connection plate to the battery module by a screw fastening member, it is possible to enhance the assemblability and prevent rotation of power storage module by a fastening torque of the screw fastener.

また請求項２の構成によれば、複数の蓄電モジュールに冷却風を供給あるいは排出するための複数の冷却孔が形成されたダクト部材を少なくとも二つの連結プレートに固定し、冷却孔の周囲に蓄電モジュールとの間をシールするシール部材を設けたので、位置決めピンおよび挿入凹部の係合により蓄電モジュールの回転が防止されることで、シール部材の圧縮量が均一化されて冷却風の漏れが確実に防止される。   According to the second aspect of the present invention, the duct member in which a plurality of cooling holes for supplying or discharging cooling air to or from the plurality of power storage modules is fixed to at least two connecting plates, and power is stored around the cooling holes. Since a seal member is provided to seal the module, the rotation of the power storage module is prevented by the engagement of the positioning pin and the insertion recess, so that the amount of compression of the seal member is made uniform and cooling air leakage is ensured. To be prevented.

また請求項３の構成によれば、挿入凹部の鉛直方向上側部分の直径は、蓄電モジュールの締結状態において位置決めピンが係合する挿入凹部の鉛直方向下側部分の直径よりも大きいので、位置決めピンを大径の鉛直方向上側部分に係合させてから鉛直方向下方の鉛直方向上側部分にスライドさせることで組付作業が容易になるだけでなく、蓄電モジュールの下面が上方からシール部材に当接するので、シール部材が水平方向に押されて変形することがなくなり、シール部材の変形によるシール性の低下が防止される。   According to the third aspect of the present invention, since the diameter of the upper portion in the vertical direction of the insertion recess is larger than the diameter of the lower portion in the vertical direction of the insertion recess with which the positioning pin is engaged in the fastening state of the power storage module, Is engaged with the large-diameter vertical upper portion and then is slid to the vertical upper portion below the vertical direction to facilitate the assembly work, and the lower surface of the power storage module comes into contact with the seal member from above. Therefore, the seal member is not deformed by being pushed in the horizontal direction, and deterioration of the sealing performance due to the deformation of the seal member is prevented.

また請求項４の構成によれば、挿入凹部は貫通孔であるので、位置決めピンが所定の位置に嵌まっているか否かを目視により確認することができる。   According to the fourth aspect of the present invention, since the insertion recess is a through hole, it can be visually confirmed whether or not the positioning pin is fitted in a predetermined position.

蓄電モジュールの斜視図。（第１の実施の形態）The perspective view of an electrical storage module. (First embodiment) 蓄電モジュールの分解斜視図。（第１の実施の形態）The exploded perspective view of an electrical storage module. (First embodiment) 蓄電モジュールおよび連結プレートの分解斜視図。（第１の実施の形態）The disassembled perspective view of an electrical storage module and a connection plate. (First embodiment) アッパーダクト、ロアダクトおよび連結プレートの分解斜視図。（第１の実施の形態）The exploded perspective view of an upper duct, a lower duct, and a connection plate. (First embodiment) 図３の５方向矢視図。（第１の実施の形態）FIG. 5 is a view in the direction of arrows 5 in FIG. 3. (First embodiment) 図５の６部拡大図。（第１の実施の形態）FIG. 6 is an enlarged view of 6 parts in FIG. 5. (First embodiment) 図６の７−７線断面図。（第１の実施の形態）FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. (First embodiment) 図６の８−８線断面図。（第１の実施の形態）FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 6. (First embodiment) 位置決めピンおよび挿入凹部の他の実施の形態を示す図（第２〜第５の実施の形態）The figure which shows other embodiment of a positioning pin and an insertion recessed part (2nd-5th embodiment)

第１の実施の形態First embodiment

以下、図１〜図８に基づいて本発明の第１の実施の形態を説明する。   Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

図１および図２に示すように、電気自動車やハイブリッド自動車の電源として使用される蓄電モジュールＭは、積層方向に積層された所定個数（実施の形態では１２個）の蓄電セル１１…を備える。各蓄電セル１１は直方体状に形成され、相互に対向する一対の主面１１ａ，１１ａと、主面１１ａ，１１ａに対して直交して相互に対向する一対の側面１１ｂ，１１ｂと、主面１１ａ，１１ａおよび側面１１ｂ，１１ｂに対して直交して相互に対向する頂面１１ｃおよび底面１１ｄとを備えており、頂面１１ｃには正負の電極１１ｅ，１１ｅが設けられる。   As shown in FIGS. 1 and 2, a power storage module M used as a power source of an electric vehicle or a hybrid vehicle includes a predetermined number (12 in the embodiment) of storage cells 11 stacked in the stacking direction. Each storage cell 11 is formed in a rectangular parallelepiped shape, a pair of main surfaces 11a, 11a facing each other, a pair of side surfaces 11b, 11b facing each other perpendicular to the main surfaces 11a, 11a, and a main surface 11a , 11a and side surfaces 11b, 11b, and a top surface 11c and a bottom surface 11d that are opposed to each other perpendicularly, and positive and negative electrodes 11e, 11e are provided on the top surface 11c.

尚、本明細書において、積層方向に直交して蓄電セル１１の頂面１１ｃおよび底面１１ｄを結ぶ方向を上下方向と定義し、積層方向に直交して蓄電セル１１の一対の側面１１ｂ，１１ｂを結ぶ方向を左右方向と定義する。   In this specification, the direction connecting the top surface 11c and the bottom surface 11d of the storage cell 11 perpendicular to the stacking direction is defined as the vertical direction, and the pair of side surfaces 11b, 11b of the storage cell 11 is defined orthogonally to the stacking direction. The connecting direction is defined as the left-right direction.

１２個の蓄電セル１１…の主面１１ａ…と、合成樹脂で構成された１１個の四角い板状の中間蓄電セルホルダ１２…とが積層方向に交互に重ね合わされ、積層方向両端の２個の蓄電セル１１，１１の積層方向外側に合成樹脂で構成された一対の四角い板状の端部蓄電セルホルダ１２Ａ，１２Ｂが重ね合わされ、更にその積層方向外側に一対の金属製のエンドプレート１４，１４が重ね合わされる。１１個の中間蓄電セルホルダ１２…は互換可能な同一形状の部材であり、一対の端部蓄電セルホルダ１２Ａ，１２Ｂは中間蓄電セルホルダ１２…とは形状が異なり、かつ相互に形状が異なる部材である。   The main surfaces 11a of the twelve power storage cells 11 and eleven square plate-shaped intermediate power storage cell holders 12 made of synthetic resin are alternately stacked in the stacking direction, and two power storages at both ends in the stacking direction. A pair of square plate-shaped end storage cell holders 12A and 12B made of synthetic resin are superimposed on the outer side in the stacking direction of the cells 11 and 11, and a pair of metal end plates 14 and 14 are further stacked on the outer side in the stacking direction. Is done. The eleven intermediate storage cell holders 12 are interchangeable members having the same shape, and the pair of end storage cell holders 12A and 12B are members different in shape from the intermediate storage cell holders 12 and different from each other.

蓄電セル１１…、中間蓄電セルホルダ１２…、端部蓄電セルホルダ１２Ａ，１２Ｂおよびエンドプレート１４，１４を積層方向に積層した状態で、Ｌ字状断面を有する一対の金属製の棒状部材よりなる上部拘束バンド１５，１５と、Ｌ字状断面を有する一対の金属製の棒状部材よりなる下部拘束バンド１６，１６とにより、一対のエンドプレート１４，１４の四隅どうしを連結して蓄電モジュールＭが組み立てられる。即ち、上部拘束バンド１５，１５の両端に設けられた厚肉のエンドプレート固定部１５ａ…と、下部拘束バンド１６，１６の両端に設けられた厚肉のエンドプレート固定部１６ａ…とがエンドプレート１４，１４の四隅に突き当てられ、エンドプレート１４，１４を貫通するボルト１７…をエンドプレート固定部１５ａ…，１６ａ…に螺合することで、蓄電モジュールＭが組み立てられる。   Storage cell 11..., Intermediate storage cell holder 12, end storage cell holders 12 A and 12 B and end plates 14 and 14 are stacked together in the stacking direction, and is an upper restraint made of a pair of metal rod-shaped members having an L-shaped cross section. The power storage module M is assembled by connecting the four corners of the pair of end plates 14 and 14 by the bands 15 and 15 and the lower restraining bands 16 and 16 made of a pair of metal rod-shaped members having an L-shaped cross section. . That is, the thick end plate fixing portions 15a provided at both ends of the upper restraining bands 15, 15 and the thick end plate fixing portions 16a provided at both ends of the lower restraining bands 16, 16 are end plates. The power storage module M is assembled by screwing bolts 17 that are abutted against the four corners 14 and 14 and pass through the end plates 14 and 14 into the end plate fixing portions 15a.

このとき、蓄電セル１１…、中間蓄電セルホルダ１２…および端部蓄電セルホルダ１２Ａ，１２Ｂと上部拘束バンド１５，１５との間に、結露水によって蓄電セル１１…と上部拘束バンド１５，１５とが液絡するのを防止するための合成樹脂製の上部インシュレータ１８，１８が配置される。同様に、蓄電セル１１…、中間蓄電セルホルダ１２…および端部蓄電セルホルダ１２Ａ，１２Ｂと下部拘束バンド１６，１６との間に、結露水によって蓄電セル１１…と下部拘束バンド１６，１６とが液絡するのを防止するための合成樹脂製の下部インシュレータ１９，１９が配置される。更に、下部拘束バンド１６，１６と下部インシュレータ１９，１９との間に、各蓄電セル１１…の底面１１ｄ…を上向きに押し上げてガタの発生を防止するための板ばね２０，２０が配置される。   At this time, between the storage cells 11..., The intermediate storage cell holder 12... And the end storage cell holders 12 A and 12 B and the upper restraint bands 15 and 15, the storage cells 11. Upper insulators 18 and 18 made of synthetic resin for preventing entanglement are arranged. Similarly, between the storage cells 11..., The intermediate storage cell holder 12... And the end storage cell holders 12 A and 12 B and the lower restraint bands 16 and 16, the storage cells 11. Lower insulators 19 and 19 made of synthetic resin for preventing entanglement are arranged. Furthermore, leaf springs 20 and 20 are arranged between the lower restraining bands 16 and 16 and the lower insulators 19 and 19 to push up the bottom surfaces 11d of the storage cells 11 to prevent the play from occurring. .

蓄電モジュールＭの上面にはＵ字状に形成された蓄電セルバスバー２１が装着されており、蓄電セルバスバー２１によって１２個の蓄電セル１１…の電極１１ｅ…が電気的に直列に接続される。   A storage cell bus bar 21 formed in a U-shape is mounted on the upper surface of the storage module M, and the electrodes 11e of the twelve storage cells 11 are electrically connected in series by the storage cell bus bar 21.

図２および図６に示すように、エンドプレート１４は、主プレート２２および副プレート２３を結合して構成される。主プレート２２は概ね矩形状の板材であって、その四隅に突設した拘束バンド締結部２２ａ…にそれぞれボルト孔２２ｂ…が形成される。一方、副プレート２３は概ね直線状の板材であって、その両端の拘束バンド締結部２３ａ，２３ａにそれぞれボルト孔２３ｂ，２３ｂが形成される。主プレート２２および副プレート２３は溶接されて一体化される。   As shown in FIGS. 2 and 6, the end plate 14 is configured by connecting a main plate 22 and a sub plate 23. The main plate 22 is a substantially rectangular plate material, and bolt holes 22b... Are formed in restraining band fastening portions 22a. On the other hand, the sub-plate 23 is a substantially linear plate material, and bolt holes 23b and 23b are formed in the restraining band fastening portions 23a and 23a at both ends, respectively. The main plate 22 and the sub plate 23 are welded and integrated.

副プレート２３には、主プレート２２から離反する方向に円錐台状に突出する一対の隆起部２３ｄ，２３ｄと、隆起部２３ｄ，２３ｄの中心に位置する締結孔２３ｃ，２３ｃとが形成される。締結孔２３ｃの裏面にウエルドナット２４が溶接される。   The sub-plate 23 is formed with a pair of raised portions 23d and 23d protruding in a truncated cone shape in a direction away from the main plate 22, and fastening holes 23c and 23c positioned at the centers of the raised portions 23d and 23d. A weld nut 24 is welded to the back surface of the fastening hole 23c.

従って、蓄電モジュールＭを組み立てるには、１２個の蓄電セル１１…および１１個の中間蓄電セルホルダ１２…を交互に積層し、その積層方向両端に一対の端部蓄電セルホルダ１２，１２を重ね合わせ、その積層方向両端に一対のエンドプレート１４，１４を重ね合わせた状態で、エンドプレート１４，１４の四隅を貫通するボルト１７…を上部拘束バンド１５，１５のエンドプレート固定部１５ａ，１５ａおよび下部拘束バンド１６，１６のエンドプレート固定部１６ａ，１６ａに螺合すれば良い。   Therefore, in order to assemble the power storage module M, twelve power storage cells 11 and 11 intermediate power storage cell holders 12 are alternately stacked, and a pair of end power storage cell holders 12 and 12 are stacked on both ends in the stacking direction, With the pair of end plates 14 and 14 superimposed on both ends in the stacking direction, bolts 17 passing through the four corners of the end plates 14 and 14 are attached to the end plate fixing portions 15a and 15a and the lower restraint of the upper restraint bands 15 and 15. What is necessary is just to screw in the end plate fixing | fixed part 16a, 16a of the band 16,16.

図６および図７から明らかなように、各蓄電モジュールＭのエンドプレート１４の主プレート２２には１本の位置決めピン２５が積層方向に突設される。位置決めピン２５は主プレート２２に固定された円柱状の軸部２５ａと、軸部２５ａの先端に設けられた頭部２５ｂとからなり、頭部２５ｂの直径は軸部２５ａの直径よりも大きくなっている。   As is apparent from FIGS. 6 and 7, one positioning pin 25 projects from the main plate 22 of the end plate 14 of each power storage module M in the stacking direction. The positioning pin 25 includes a cylindrical shaft portion 25a fixed to the main plate 22 and a head portion 25b provided at the tip of the shaft portion 25a. The diameter of the head portion 25b is larger than the diameter of the shaft portion 25a. ing.

図３、図４および図７から明らかなように、連結プレート２６には各々１２個の円錐台状の隆起部２６ｃが形成されており、それらの中心に締結孔２６ａ…が形成される。また連結プレート２６には、６個の蓄電モジュールＭ…の位置決めピン２５…に対応する６個の位置決め孔２６ｂ…が形成される。位置決め孔２６ｂは本発明の挿入凹部を構成するもので、上側に位置する円形の大径部ａと、下側に位置するＵ字状の小径部ｂとを連通させた形状であり、円形の大径部ａの直径は位置決めピン２５の頭部２５ｂの直径よりも僅かに大きく、かつＵ字状の小径部ｂの幅および底部の直径は位置決めピン２５の軸部２５ａの直径よりも僅かに大きく設定される。   As apparent from FIGS. 3, 4 and 7, the connecting plate 26 is formed with twelve frustoconical raised portions 26c, and fastening holes 26a are formed at the centers thereof. Further, six positioning holes 26b corresponding to the positioning pins 25 of the six power storage modules M are formed in the connection plate 26. The positioning hole 26b constitutes the insertion recess of the present invention, and has a shape in which a circular large-diameter portion a positioned on the upper side and a U-shaped small-diameter portion b positioned on the lower side communicate with each other. The diameter of the large diameter portion a is slightly larger than the diameter of the head portion 25b of the positioning pin 25, and the width and bottom diameter of the U-shaped small diameter portion b are slightly larger than the diameter of the shaft portion 25a of the positioning pin 25. It is set large.

図４、図６および図８から明らかなように、アッパーダクト２７およびロアダクト２８は、矩形トレー状のダクト本体３０と、その開放部に結合される仕切り板３１とを備えており、仕切り板３１には６個の蓄電モジュールＭ…に対応する６個の冷却孔３１ａ…が形成されるとともに、ダクト本体３０および仕切り板３１が複数の補強リブ３０ａ…で接続される。またロアダクト２８の両端部には冷却空気を導入するための冷却空気導入部２８ａ，２８ａが形成され、アッパーダクト２７には冷却空気を排出するための冷却空気排出部（図示せず）が形成される。   As apparent from FIGS. 4, 6, and 8, the upper duct 27 and the lower duct 28 include a rectangular tray-shaped duct main body 30 and a partition plate 31 coupled to an open portion thereof. Are formed with six cooling holes 31a corresponding to the six power storage modules M, and the duct body 30 and the partition plate 31 are connected by a plurality of reinforcing ribs 30a. Cooling air introduction portions 28a and 28a for introducing cooling air are formed at both ends of the lower duct 28, and a cooling air discharge portion (not shown) for discharging the cooling air is formed in the upper duct 27. The

アッパーダクト２７およびロアダクト２８の仕切り板３１，３１の冷却孔３１ａ…の外周には、蓄電モジュールＭ…の上部拘束バンド１５…あるいは下部拘束バンド１６…と、エンドプレート１４…とに当接して冷却空気の漏れを阻止する弾性体よりなるシール部材３３…が配置される。そしてアッパーダクト２７およびロアダクト２８の外周部は、連結プレート２６，２６の上下のフランジ２６ｄ…にボルト３４…で締結される。   The outer peripheries of the cooling holes 31a of the partition plates 31 and 31 of the upper duct 27 and the lower duct 28 are in contact with the upper restraint band 15 or the lower restraint band 16 of the power storage module M and the end plate 14 for cooling. Seal members 33 made of an elastic body for preventing air leakage are arranged. The outer peripheries of the upper duct 27 and the lower duct 28 are fastened to the upper and lower flanges 26d of the connecting plates 26, 26 with bolts 34.

従って、冷却空気導入部２８ａ，２８ａからロアダクト２８の内部に導入された冷却空気は、ロアダクト２８の仕切り板３１の６個の冷却孔３１ａ…を通過して６個の蓄電モジュールＭ…の中間蓄電セルホルダ１２…および端部蓄電セルホルダ１２Ａ…，１２ｂの内部を流れ、その間に蓄電セル１１…と熱交換して冷却する。蓄電セル１１…を冷却して温度上昇した冷却空気は、アッパーダクト２７の仕切り板３１の６個の冷却孔３１ａ…を通過してアッパーダクト２７の内部で合流し、図示せぬ冷却空気排出部から外部に排出される。   Therefore, the cooling air introduced into the lower duct 28 from the cooling air introduction portions 28a, 28a passes through the six cooling holes 31a ... of the partition plate 31 of the lower duct 28, and is intermediately stored in the six storage modules M ... It flows through the inside of the cell holders 12 ... and the end battery cell holders 12A ..., 12b, and cools them by exchanging heat with the battery cells 11 ... Cooling air whose temperature has risen by cooling the storage cells 11 passes through the six cooling holes 31a of the partition plate 31 of the upper duct 27 and merges inside the upper duct 27, and a cooling air discharge section (not shown) Is discharged to the outside.

次に、蓄電装置Ｐの組み立て時の作用を説明する。   Next, the operation when assembling the power storage device P will be described.

蓄電装置Ｐは一対の連結プレート２６，２６と、アッパーダクト２７と、ロアダクト２８とを備えており、一対の連結プレート２６，２６間に６個の蓄電モジュールＭ…が９０°横倒しにした状態で並置される。各連結プレート２６，２６には１２個の円錐台状の隆起部２６ｃ…が形成されており、それらの中心に形成した締結孔２６ａ…および副プレート２３…の１２個の締結孔２３ｃ…を貫通する１２本のボルト２９…を副プレート２３…の裏面のウエルドナット２４…に螺合することで、一対の連結プレート２６，２６と６個の蓄電モジュールＭ…のエンドプレート１４…とを締結する。そして一対の連結プレート２６，２６のフランジ２６ｄ…にアッパーダクト２７およびロアダクト２８をボルト３４…で締結することで蓄電装置Ｐが組み立てられる。   The power storage device P includes a pair of connection plates 26, 26, an upper duct 27, and a lower duct 28, and six power storage modules M... Are laid down by 90 ° between the pair of connection plates 26, 26. Juxtaposed. Twelve frustoconical ridges 26c ... are formed in each of the connecting plates 26, 26, and penetrate through the 12 fastening holes 23c ... of the fastening holes 26a ... and the sub plates 23 ... formed at the centers thereof. The twelve bolts 29 are screwed into the weld nuts 24 on the back surface of the sub-plate 23 to fasten the pair of connecting plates 26 and 26 and the end plates 14 of the six power storage modules M. . The power storage device P is assembled by fastening the upper duct 27 and the lower duct 28 to the flanges 26d of the pair of connecting plates 26, 26 with bolts 34.

その際に、連結プレート２６，２６および蓄電モジュールＭ…を固定するボルト２９…は蓄電セル１１…の積層方向に締結されるので、連結プレート２６，２６の形状を特に工夫しなくても、ボルト２９…を操作するための工具と連結プレート２６，２６との間の距離を充分に確保することができ、締結作業の作業性向上および連結プレート２６，２６の小型化が可能となる。   At this time, the bolts 29 for fixing the connection plates 26, 26 and the power storage modules M are fastened in the stacking direction of the power storage cells 11, so that the bolts are not required even if the shape of the connection plates 26, 26 is not particularly devised. 29... Can be sufficiently secured between the connection plates 26 and 26, and the workability of the fastening operation can be improved and the connection plates 26 and 26 can be downsized.

ところで、ボルト２９…を締結する作業を行うとき、その締結トルクによって蓄電モジュールＭがボルト２９…の軸線回りに回転してしまい、蓄電モジュールＭの上面および下面がアッパーダクト２７およびロアダクト２８の仕切り板３１，３１に対して非平行になる可能性がある。   By the way, when the operation of fastening the bolts 29 is performed, the power storage module M is rotated around the axis of the bolts 29 by the fastening torque, and the upper and lower surfaces of the power storage modules M are the partition plates for the upper duct 27 and the lower duct 28. 31 and 31 may be non-parallel.

しかしながら、本実施の形態によれば、６個の蓄電モジュールＭ…と連結プレート２６，２６とをボルト２９…で締結するとき、蓄電モジュールＭのエンドプレート１４に突設した位置決めピン２５を連結プレート２６の位置決め孔２６ｂに係合させるので、ボルト２９の締結トルクに引きずられて蓄電モジュールＭがボルト２９の軸線まわりに回転するのを防止することができる。これにより、アッパーダクト２７およびロアダクト２８のシール部材３３…が、蓄電モジュールＭの上部拘束バンド１５，１５、下部拘束バンド１６，１６およびエンドプレート１４，１４に均等に当接することが可能になり（図６参照）、シール部材３３…の隙間から冷却空気が漏れるのを防止して冷却効果を高めることができる。   However, according to the present embodiment, when the six power storage modules M and the connection plates 26 and 26 are fastened by the bolts 29, the positioning pins 25 protruding from the end plate 14 of the power storage module M are connected to the connection plate. 26, the power storage module M can be prevented from rotating around the axis of the bolt 29 by being dragged by the fastening torque of the bolt 29. As a result, the seal members 33 of the upper duct 27 and the lower duct 28 can abut evenly on the upper restraint bands 15 and 15, the lower restraint bands 16 and 16 and the end plates 14 and 14 of the power storage module M ( 6), the cooling effect can be enhanced by preventing the cooling air from leaking through the gaps between the seal members 33.

また位置決めピン２５を位置決め孔２６ｂに嵌合するとき、図７に示すように、先ず位置決めピン２５の大径の頭部２５ｂを位置決め孔２６ｂの大径部ａを通過させた後に、蓄電モジュールＭを下降させると、位置決めピン２５の小径の軸部２５ａが位置決め孔２６ｂの小径部ｂに嵌合するので、連結プレート２６に対して蓄電モジュールＭのエンドプレート１４を精度良く位置決めし、ボルト２９…の締結作業を効率的に行うことができる。しかも蓄電モジュールＭを下降させて位置決めピン２５の軸部２５ａを位置決め孔２６ｂの大径部ａから小径部ｂに移動させるとき、蓄電モジュールＭは下側のロアダクト２８に対して垂直に下降するので、蓄電モジュールＭおよびロアダクト２８間に挟まれるシール部材３３…が横ずれしてシール性が低下するのを防止することができる。   When the positioning pin 25 is fitted into the positioning hole 26b, as shown in FIG. 7, first, the large-diameter head portion 25b of the positioning pin 25 is passed through the large-diameter portion a of the positioning hole 26b, and then the power storage module M Is lowered, the small-diameter shaft portion 25a of the positioning pin 25 is fitted into the small-diameter portion b of the positioning hole 26b. Therefore, the end plate 14 of the power storage module M is accurately positioned with respect to the connecting plate 26, and the bolt 29 ... Can be efficiently performed. Moreover, when the power storage module M is lowered and the shaft portion 25a of the positioning pin 25 is moved from the large diameter portion a to the small diameter portion b of the positioning hole 26b, the power storage module M is lowered vertically with respect to the lower lower duct 28. Further, it is possible to prevent the sealing members 33... Sandwiched between the power storage module M and the lower duct 28 from being laterally displaced and lowering the sealing performance.

また位置決め孔２６ｂは貫通孔で構成されているので、位置決めピン２５が位置決め孔２６ｂに正しく嵌合しているか否かを目視により容易に確認することができる。   Further, since the positioning hole 26b is formed of a through hole, it can be easily confirmed visually whether or not the positioning pin 25 is correctly fitted in the positioning hole 26b.

第２〜第５の実施の形態Second to fifth embodiments

次に、図９に基づいて本発明の第２〜第４の実施の形態を説明する。   Next, second to fourth embodiments of the present invention will be described with reference to FIG.

上述した第１の実施の形態では、エンドプレート１４側に位置決めピン２５を設け、連結プレート２６側に位置決め孔２６ｂを設けているが、その位置関係を逆転し、図９（Ａ）に第２の実施の形態として示すように、連結プレート２６側に位置決めピン２５を設け、エンドプレート１４側に位置決め孔１４ａを設けても、第１の実施の形態と同様の作用効果を達成することができる。   In the first embodiment described above, the positioning pin 25 is provided on the end plate 14 side and the positioning hole 26b is provided on the connecting plate 26 side. However, the positional relationship is reversed, and the second example is shown in FIG. As shown in the embodiment, even if the positioning pin 25 is provided on the connecting plate 26 side and the positioning hole 14a is provided on the end plate 14 side, the same effect as that of the first embodiment can be achieved. .

また貫通孔である位置決め孔２６ｂ，１４ａに代えて、貫通していない窪みに位置決めピン２５を挿入しても良い。図９（Ｂ）に示す第３の実施の形態は、エンドプレート１４側に位置決めピン２５を設けて連結プレート２６側に窪み２６ｅを設けたものであり、図９（Ｃ）に示す第４の実施の形態は、連結プレート２６側に位置決めピン２５を設けてエンドプレート１４側に窪み１４ｂを設けたものである。第３、第４の実施の形態によっても、第１、第２の実施の形態と同様の作用効果を達成することができる。   Moreover, it may replace with the positioning holes 26b and 14a which are through-holes, and may insert the positioning pin 25 in the hollow which has not penetrated. In the third embodiment shown in FIG. 9B, a positioning pin 25 is provided on the end plate 14 side and a recess 26e is provided on the connecting plate 26 side. The fourth embodiment shown in FIG. In the embodiment, the positioning pin 25 is provided on the connecting plate 26 side, and the depression 14b is provided on the end plate 14 side. Also according to the third and fourth embodiments, the same operational effects as those of the first and second embodiments can be achieved.

また図９（Ｄ）に第５の実施の形態として示すように、エンドプレート１４の主プレート２２に位置決めピン２５を設ける代わりに、エンドプレート１４の副プレート２３に位置決めピン２５を設けても同様の作用効果を達成することができる。   Further, as shown in FIG. 9D as the fifth embodiment, the positioning pin 25 may be provided on the sub plate 23 of the end plate 14 instead of providing the positioning pin 25 on the main plate 22 of the end plate 14. The effect of this can be achieved.

以上、本発明の実施の形態を説明したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。   The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

例えば、実施の形態の蓄電セル１１はリチウムイオンバッテリに限定されず、他種のバッテリやキャパシタであっても良い。   For example, the storage cell 11 of the embodiment is not limited to a lithium ion battery, and may be another type of battery or capacitor.

また実施の形態では６個の蓄電モジュールＭを２枚の連結プレート２６で挟持しているが、蓄電モジュールＭの数は複数個であれば良く、連結プレート２６の数も複数枚であれば良い。   In the embodiment, six power storage modules M are sandwiched between two connection plates 26. However, the number of power storage modules M may be plural, and the number of connection plates 26 may be plural. .

また実施の形態では蓄電モジュールＭの積層方向両側で位置決めピン２５による位置決めを行っているが、蓄電モジュールＭの積層方向片側だけで位置決めを行っても良い。   In the embodiment, positioning is performed by the positioning pins 25 on both sides of the storage module M in the stacking direction, but positioning may be performed only on one side of the storage module M in the stacking direction.

また実施の形態では各エンドプレート１４に１本の位置決めピン２５を設けているが、２本以上の位置決めピン２５を設ければ蓄電モジュールＭの姿勢を更に安定させることができる。   In the embodiment, one positioning pin 25 is provided on each end plate 14. However, if two or more positioning pins 25 are provided, the posture of the power storage module M can be further stabilized.

尚、実施の形態ではシール部材３３を用いているが、本発明はシール部材３３を用いない場合にも適用可能である。例えば、アッパーダクト２７あるいはロアダクト２８の仕切り板３１が変形することで生じる蓄電モジュールＭの回り止め対策として有効である。   In the embodiment, the seal member 33 is used. However, the present invention can be applied to the case where the seal member 33 is not used. For example, this is effective as a countermeasure against the rotation of the power storage module M that occurs when the partition plate 31 of the upper duct 27 or the lower duct 28 is deformed.

１１ 蓄電セル
１４ａ 位置決め孔（挿入凹部）
１４ｂ 窪み（挿入凹部）
２５ 位置決めピン
２６ 連結プレート
２６ｂ 位置決め孔（挿入凹部）
２６ｅ 窪み（挿入凹部）
２７ アッパーダクト（ダクト部材）
２８ ロアダクト（ダクト部材）
２９ ボルト（ねじ締結部材）
３１ａ 冷却孔
３３ シール部材
Ｍ 蓄電モジュール
11 Storage cell 14a Positioning hole (insertion recess)
14b recess (insertion recess)
25 Positioning Pin 26 Connecting Plate 26b Positioning Hole (Insertion Recess)
26e depression (insertion recess)
27 Upper duct (duct member)
28 Lower duct (duct member)
29 Bolt ( screw fastening member )
31a Cooling hole 33 Seal member M Power storage module

Claims (5)

複数の角形の蓄電セル（１１）を積層方向に積層して蓄電モジュール（Ｍ）を構成し、積層方向に対して交差する方向に並置した複数の前記蓄電モジュール（Ｍ）を積層方向両側に配置した少なくとも二つの連結プレート（２６）間に挟持し、前記少なくとも二つの連結プレート（２６）のうちの少なくとも一つの連結プレート（２６）を前記複数の蓄電モジュール（Ｍ）にねじ締結部材（２９）により積層方向に締結する蓄電装置であって、 前記蓄電モジュール（Ｍ）はその積層方向端部から前記少なくとも一つの連結プレート（２６）に向かって突出する位置決めピン（２５）を備え、前記少なくとも一つの連結プレート（２６）は前記蓄電モジュール（Ｍ）を挟持した状態で前記位置決めピン（２５）が係合する挿入凹部（２６ｂ，２６ｅ）を備えることを特徴とする蓄電装置。 A plurality of rectangular storage cells (11) are stacked in the stacking direction to form a storage module (M), and the plurality of storage modules (M) juxtaposed in a direction intersecting the stacking direction are arranged on both sides in the stacking direction The at least two connection plates (26) are clamped between the at least two connection plates (26), and at least one connection plate (26) of the at least two connection plates (26) is screwed to the plurality of power storage modules (M). The power storage module (M) includes a positioning pin (25) projecting from the end in the stacking direction toward the at least one connecting plate (26), and the power storage module (M) is fastened in the stacking direction. The two connecting plates (26) are inserted into the recesses (26b, 2) with which the positioning pin (25) is engaged with the power storage module (M) sandwiched therebetween. 6e). 前記複数の蓄電モジュール（Ｍ）に冷却風を供給あるいは排出するための複数の冷却孔（３１ａ）が形成されたダクト部材（２７，２８）を前記少なくとも二つの連結プレート（２６）に固定し、前記冷却孔（３１ａ）の周囲に前記蓄電モジュール（Ｍ）との間をシールするシール部材（３３）を設けたことを特徴とする、請求項１に記載の蓄電装置。   Fixing at least two connecting plates (26) duct members (27, 28) having a plurality of cooling holes (31a) for supplying or discharging cooling air to and from the plurality of power storage modules (M); The power storage device according to claim 1, wherein a sealing member (33) for sealing between the power storage module (M) is provided around the cooling hole (31a). 前記挿入凹部（２６ｂ）の鉛直方向上側部分の径は、前記蓄電モジュール（Ｍ）の締結状態において前記位置決めピン（２５）が係合する前記挿入凹部（２６ｂ）の鉛直方向下側部分の径よりも大きいことを特徴とする、請求項２に記載の蓄電装置。   The diameter of the upper portion in the vertical direction of the insertion recess (26b) is larger than the diameter of the lower portion in the vertical direction of the insertion recess (26b) with which the positioning pin (25) is engaged in the fastening state of the power storage module (M). The power storage device according to claim 2, wherein the power storage device is also larger. 前記挿入凹部（２６ｂ）は貫通孔であることを特徴とする、請求項１〜請求項３の何れか１項に記載の蓄電装置。   The power storage device according to any one of claims 1 to 3, wherein the insertion recess (26b) is a through hole. 複数の角形の蓄電セル（１１）を積層方向に積層して蓄電モジュール（Ｍ）を構成し、積層方向に対して交差する方向に並置した複数の前記蓄電モジュール（Ｍ）を積層方向両側に配置した少なくとも二つの連結プレート（２６）間に挟持し、前記少なくとも二つの連結プレート（２６）のうちの少なくとも一つの連結プレート（２６）を前記複数の蓄電モジュール（Ｍ）にねじ締結部材（２９）により積層方向に締結する蓄電装置であって、 前記少なくとも一つの連結プレート（２６）は前記蓄電モジュール（Ｍ）に向かって突出する位置決めピン（２５）を備え、前記蓄電モジュール（Ｍ）は前記少なくとも二つの連結プレート（２６）に挟持された状態で前記位置決めピン（２５）が挿入される挿入凹部（１４ａ，１４ｂ）を備えることを特徴とする蓄電装置。
A plurality of rectangular storage cells (11) are stacked in the stacking direction to form a storage module (M), and the plurality of storage modules (M) juxtaposed in a direction intersecting the stacking direction are arranged on both sides in the stacking direction. The at least two connection plates (26) are clamped between the at least two connection plates (26), and at least one connection plate (26) of the at least two connection plates (26) is screwed to the plurality of power storage modules (M). The at least one connecting plate (26) includes a positioning pin (25) protruding toward the power storage module (M), and the power storage module (M) An insertion recess (14a, 14b) into which the positioning pin (25) is inserted while being sandwiched between two connection plates (26) is provided. A power storage device characterized by the above.
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