JP7459805B2 - Battery pack, removal device, and battery stack removal method - Google Patents

Battery pack, removal device, and battery stack removal method Download PDF

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JP7459805B2
JP7459805B2 JP2021002313A JP2021002313A JP7459805B2 JP 7459805 B2 JP7459805 B2 JP 7459805B2 JP 2021002313 A JP2021002313 A JP 2021002313A JP 2021002313 A JP2021002313 A JP 2021002313A JP 7459805 B2 JP7459805 B2 JP 7459805B2
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assembly member
battery stack
outer peripheral
peripheral wall
case
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JP2022107391A (en
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重行 井上
伸一郎 森
一成 廣森
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Toyota Motor Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • 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
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/84—Recycling of batteries or fuel cells

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Materials Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Description

本発明は、電池パック、取り外し装置、及び電池スタックの取り外し方法に関する。 The present invention relates to a battery pack, a removal device, and a method for removing a battery stack.

電気自動車は、例えばリチウムイオンバッテリなどの電池パックを搭載し、電池パックの電力によりモータを駆動して走行する。電池パックのケースには、複数の電池セルが積層された電池スタックが収容されている（例えば特許文献１参照）。 An electric vehicle is equipped with a battery pack such as a lithium ion battery, and runs by driving a motor using electric power from the battery pack. A battery stack in which a plurality of battery cells are stacked is housed in a battery pack case (see, for example, Patent Document 1).

特開２０１５－７９６０５号公報JP2015-79605A

電池パックは発熱するため、ケースを介して放熱することができるように熱伝導性の高い接着剤でケースの底面に接着されている。このため、電池スタックの交換時、電池スタックをケースから取り外すことが難しく、例えばクレーンなどの機材により強い力で電池スタックをケースから引きはがす。しかし、このような手段は、電池パックが高圧電源であるため、安全性の観点から好ましくない。 Since the battery pack generates heat, it is bonded to the bottom of the case with a highly thermally conductive adhesive so that the heat can be dissipated through the case. For this reason, when replacing the battery stack, it is difficult to remove the battery stack from the case, and the battery stack must be peeled off from the case using strong force, for example, using equipment such as a crane. However, such a measure is not preferable from a safety standpoint because the battery pack is a high-voltage power source.

そこで本発明は上記の課題に鑑みてなされたものであり、電池スタックをケースから容易に取り外すことができる電池パック、取り外し装置、及び電池スタックの取り外し方法を提供することを目的とする。 SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a battery pack, a removal device, and a battery stack removal method that allow the battery stack to be easily removed from the case.

本明細書に記載の電池パックは、複数の電池セルが積層された電池スタックと、前記電池スタックを外周壁で囲むように収容するケースと、前記外周壁の上面から露出した前記電池スタックの端面に組付けられる第１組付け部材と、前記ケースの深さ方向で前記第１組付け部材と重なるように、前記外周壁の上面に組付けられる第２組付け部材とを有し、前記第１組付け部材は、前記ケースの深さ方向に貫通する螺子孔を有し、前記第２組付け部材は、前記螺子孔に螺合して回転する螺子軸の先端部に当接する。 The battery pack described in this specification includes a battery stack in which a plurality of battery cells are stacked, a case that accommodates the battery stack so as to be surrounded by an outer peripheral wall, and an end surface of the battery stack exposed from the upper surface of the outer peripheral wall. a first assembly member assembled to the outer peripheral wall, and a second assembly member assembled to the upper surface of the outer peripheral wall so as to overlap with the first assembly member in the depth direction of the case; The first assembly member has a screw hole that penetrates in the depth direction of the case, and the second assembly member abuts the tip of a screw shaft that is threaded into the screw hole and rotates.

上記の構成において、前記第２組付け部材は、前記外周壁の上面に固定される板状部を有し、前記板状部は、前記螺子軸の先端部に当接してもよい。 In the above configuration, the second assembly member may have a plate-shaped portion fixed to the upper surface of the outer peripheral wall, and the plate-shaped portion may abut the tip of the screw shaft.

上記の構成において、前記外周壁は、前記ケースの深さ方向に延びる凹部を有し、前記第２組付け部材は、前記ケースの深さ方向に延び、前記電池スタックの端面と前記凹部の間の隙間に挿入される脚部を有してもよい。 In the above configuration, the outer wall may have a recess extending in the depth direction of the case, and the second assembly member may have a leg extending in the depth direction of the case and inserted into a gap between an end face of the battery stack and the recess.

上記の構成において、前記外周壁から上方に露出した前記電池スタックの端面には、前記第１組付け部材を締結するための第１締結手段が設けられ、前記外周壁の上面には、前記第２組付け部材を締結するための第２締結手段が設けられ、前記第１締結手段及び前記第２締結手段は、前記第１組付け部材及び前記第２組付け部材が締結されていないとき、前記電池スタックの端面及び前記外周壁の上面の間を接合する接合部材の締結に用いられてもよい。 In the above configuration, a first fastening means for fastening the first assembly member is provided on the end face of the battery stack exposed upward from the outer peripheral wall, and a second fastening means for fastening the second assembly member is provided on the upper surface of the outer peripheral wall, and the first fastening means and the second fastening means may be used to fasten a joining member that joins the end face of the battery stack and the upper surface of the outer peripheral wall when the first assembly member and the second assembly member are not fastened.

本明細書に記載の取り外し装置は、複数の電池セルが積層された電池スタックを外周壁で囲むように収容したケースから、前記電池スタックを取り外す取り外し装置において、前記外周壁の上面から露出した前記電池スタックの端面に組付けられる第１組付け部材と、前記ケースの深さ方向で前記第１組付け部材と重なるように、前記外周壁の上面に組付けられる第２組付け部材とを有し、前記第１組付け部材は、前記ケースの深さ方向に貫通する螺子孔を有し、前記第２組付け部材は、前記螺子孔に螺合して回転する螺子軸の先端部に当接する。 The removal device described in this specification is a removal device that removes a battery stack from a case that contains a battery stack in which multiple battery cells are stacked and is surrounded by an outer peripheral wall. The removal device has a first assembly member that is attached to an end face of the battery stack exposed from the upper surface of the outer peripheral wall, and a second assembly member that is attached to the upper surface of the outer peripheral wall so as to overlap with the first assembly member in the depth direction of the case, the first assembly member has a screw hole that penetrates the case in the depth direction, and the second assembly member abuts against the tip of a screw shaft that screws into the screw hole and rotates.

上記の構成において、前記第２組付け部材は、前記外周壁の上面に固定される板状部を有し、前記板状部は、前記螺子軸の先端部に当接してもよい。 In the above configuration, the second assembly member may have a plate-shaped portion fixed to the upper surface of the outer peripheral wall, and the plate-shaped portion may abut the tip of the screw shaft.

上記の構成において、前記外周壁は、前記ケースの深さ方向に延びる凹部を有し、前記第２組付け部材は、前記ケースの深さ方向に延び、前記電池スタックの端面と前記凹部の間の隙間に挿入される脚部を有してもよい。 In the above configuration, the outer wall may have a recess extending in the depth direction of the case, and the second assembly member may have a leg extending in the depth direction of the case and inserted into a gap between an end face of the battery stack and the recess.

本明細書に記載の電池スタックの取り外し方法は、複数の電池セルが積層された電池スタックを外周壁で囲むように収容したケースから前記電池スタックを取り外す、電池スタックの取り外し方法において、前記外周壁の上面から露出した前記電池スタックの端面に、前記ケースの深さ方向に貫通する螺子孔を有する第１組付け部材を組付け、前記ケースの深さ方向で前記第１組付け部材と重なるように、第２組付け部材を前記外周壁の上面に組付け、前記螺子孔に螺子軸を螺合し、前記第２組付け部材が前記螺子軸の先端部に当接した状態で前記螺子軸を回転させる方法である。 The battery stack removal method described in this specification is a method of removing a battery stack from a case that contains a battery stack, in which a plurality of stacked battery cells are enclosed by an outer wall, by assembling a first assembly member having a screw hole penetrating in the depth direction of the case to an end face of the battery stack exposed from the upper surface of the outer wall, assembling a second assembly member to the upper surface of the outer wall so as to overlap the first assembly member in the depth direction of the case, screwing a screw shaft into the screw hole, and rotating the screw shaft with the second assembly member abutting against the tip of the screw shaft.

上記の構成において、前記第２組付け部材は、前記外周壁の上面に固定される板状部を有し、前記板状部は、前記螺子軸の先端部に当接してもよい。 In the above configuration, the second assembly member may have a plate-shaped portion fixed to the upper surface of the outer peripheral wall, and the plate-shaped portion may abut against the tip of the screw shaft.

上記の構成において、前記外周壁は、前記ケースの深さ方向に延びる凹部を有し、前記第２組付け部材は、前記ケースの深さ方向に延びる脚部を有し、前記脚部は、前記電池スタックの端面と前記凹部の間の隙間に挿入されてもよい。 In the above configuration, the outer wall has a recess extending in the depth direction of the case, and the second assembly member has a leg extending in the depth direction of the case, and the leg may be inserted into a gap between an end face of the battery stack and the recess.

本発明によれば、電池スタックをケースから容易に取り外すことができる。 According to the present invention, the battery stack can be easily removed from the case.

電池パックの一例を示す分解斜視図である。FIG. 2 is an exploded perspective view showing an example of a battery pack. 図１のＡ－Ａ線に沿った部分断面図である。2 is a partial cross-sectional view taken along line AA in FIG. 1. 下部ケースに対する電池スタックの組付け方法の一例を示す斜視図である。11 is a perspective view showing an example of a method for assembling the battery stack to the lower case. FIG. 上部組付け部材の一例を示す図である。It is a figure which shows an example of an upper assembly member. 下部組付け部材の一例を示す図である。It is a figure which shows an example of a lower assembly member. 取り外し治具の組付け方法の一例を示す斜視図である。FIG. 13 is a perspective view showing an example of a method for assembling the removal jig. 図６のＥ－Ｅ線に沿った部分断面図である。7 is a partial cross-sectional view taken along line EE in FIG. 6. FIG. 電池スタックの取り外し方法の一例を示す図である。It is a figure which shows an example of the removal method of a battery stack.

（電池パックの構成）
図１は、電池パック１の一例を示す分解斜視図である。図１には、互いに直交する電池パック１の高さ方向Ｈ、幅方向Ｗ、及び長さ方向Ｌが示されている。 (Battery pack configuration)
FIG. 1 is an exploded perspective view showing an example of a battery pack 1. FIG. FIG. 1 shows a height direction H, a width direction W, and a length direction L of the battery pack 1 that are orthogonal to each other.

電池パック１は、例えば電気自動車などの電力を動力に利用する車両に搭載され、動力源のモータ（不図示）に電力を供給する。電池パック１は、例えばリチウムイオン電池であるが、これに限定されない。電池パック１は、上部ケース１０、複数の電池スタック１１ａ～１１ｄ、及び下部ケース１２を有する。 The battery pack 1 is mounted on a vehicle that uses electricity as its power source, such as an electric vehicle, and supplies power to a motor (not shown) that serves as the power source. The battery pack 1 is, for example, a lithium-ion battery, but is not limited to this. The battery pack 1 has an upper case 10, multiple battery stacks 11a to 11d, and a lower case 12.

電池スタック１１ａ～１１ｄは、幅方向Ｗに並んだ状態で上部ケース１０及び下部ケース１２の内部に収容される。電池スタック１１ａ～１１ｄは、長さ方向Ｌに積層された複数の電池セル１１１、複数の電池セル１１１の積層体を長さ方向Ｌの両端から挟み込むエンドプレート１１０、各エンドプレート１１０の間を締結する板状の締結バー１１２、及び幅方向Ｗの一方の側面に設けられた仕切り板１１３を有する。 The battery stacks 11a to 11d are housed inside the upper case 10 and the lower case 12 in a state where they are lined up in the width direction W. The battery stacks 11a to 11d include a plurality of battery cells 111 stacked in the length direction L, end plates 110 that sandwich the stack of the plurality of battery cells 111 from both ends in the length direction L, and fastening between each end plate 110. It has a plate-shaped fastening bar 112 and a partition plate 113 provided on one side in the width direction W.

電池セル１１１は、板状の単セルであり、隣接する他の電池セル１１１またはエンドプレート１１０と面接触している。電池セル１１１は、各エンドプレート１１０間の締結バー１１２により積層状態を維持する。仕切り板１１３は、電池スタック１１ａ～１１ｄの一方の側面に設けられ、並列に配置された電池スタック１１ａ～１１ｄの間を仕切る。なお、電池スタック１１ａ～１１ｄの電力を取り出すコネクタ端子などの図示は省略する。 The battery cells 111 are plate-shaped single cells that are in surface contact with adjacent other battery cells 111 or end plates 110. The battery cells 111 are maintained in a stacked state by fastening bars 112 between each end plate 110. Partition plates 113 are provided on one side of the battery stacks 11a to 11d, and separate the battery stacks 11a to 11d that are arranged in parallel. Note that connector terminals and other components for extracting power from the battery stacks 11a to 11d are not shown in the figure.

上部ケース１０及び下部ケース１２は、例えば板金により形成され、上面視において略矩形状の外形を有する。下部ケース１２は、底面１２０の外縁から高さ方向Ｈに立設された外周壁１２１、及び外周壁１２１の上部から外側に張り出した鍔部１２２を有する。下部ケース１２の鍔部１２２は、上部ケース１０の外周沿いに設けられた鍔部１００とボルトなどの締結手段により締結される。 The upper case 10 and the lower case 12 are formed, for example, from sheet metal, and have a generally rectangular outer shape when viewed from above. The lower case 12 has an outer peripheral wall 121 standing in the height direction H from the outer edge of the bottom surface 120, and a flange 122 that protrudes outward from the upper part of the outer peripheral wall 121. The flange 122 of the lower case 12 is fastened to the flange 100 provided along the outer periphery of the upper case 10 by fastening means such as bolts.

下部ケース１２は、電池スタック１１ａ～１１ｄを外周壁１２１で囲んで収容するケースの一例である。ここで、下部ケース２の深さ方向は高さ方向Ｈに沿っている。各電池スタック１１ａ～１１ｄは、外周壁１２１に沿って底面１２０に接着した状態で収容されている。底面１２０上には、各電池スタック１１ａ～１１ｄを接着するための接着層１２４が設けられている。接着層１２４は、例えば、フィラーなどの金属粒子を含むウレタン系の接着剤であり、電池スタック１１ａ～１１ｄごとに長さ方向Ｌに延びるように２列に形成されている。 The lower case 12 is an example of a case that houses the battery stacks 11a to 11d surrounded by an outer peripheral wall 121. Here, the depth direction of the lower case 2 is along the height direction H. Each of the battery stacks 11a to 11d is housed along an outer peripheral wall 121 and adhered to a bottom surface 120. An adhesive layer 124 is provided on the bottom surface 120 for bonding each battery stack 11a to 11d. The adhesive layer 124 is, for example, a urethane-based adhesive containing metal particles such as a filler, and is formed in two rows extending in the length direction L for each of the battery stacks 11a to 11d.

電池スタック１１ａ～１１ｄは、外周壁１２１で囲まれる略直方体形状の収容スペースに幅方向に配列された状態で収容される。このため、各電池スタック１１ａ～１１ｄの両端のエンドプレート１１０の板面１１０ｂは、外周壁１２１の長さ方向Ｌの両端の近傍に位置する。なお、エンドプレート１１０の板面１１０ｂは電池スタック１１ａ～１１ｄの端面１１０ｂの一例である。 The battery stacks 11a to 11d are accommodated in a substantially rectangular parallelepiped-shaped accommodation space surrounded by an outer peripheral wall 121 in a state arranged in the width direction. Therefore, the plate surfaces 110b of the end plates 110 at both ends of each battery stack 11a to 11d are located near both ends of the outer peripheral wall 121 in the length direction L. Note that the plate surface 110b of the end plate 110 is an example of the end surface 110b of the battery stacks 11a to 11d.

エンドプレート１１０の板面１１０ｂの上部には、４個の組付け穴１１０ａが幅方向Ｗに並んで配置されている。また、エンドプレート１１０に対向する外周壁１２１の上部の鍔部１２２には、組付け穴１１０ａの配置に合わせるように、４個の螺子軸１２３が幅方向Ｗに並んで配置されている。螺子軸１２３は、鍔部１２２の上面１２２ａから高さ方向Ｈに延び、外周面に螺子溝が形成された略円柱状部材である。なお、鍔部１２２の上面１２２ａは外周壁１２１の上面の一例であるが、鍔部１２２が設けられていない場合、螺子軸１２３は外周壁１２１の上端面に設けられる。 Four mounting holes 110a are arranged in the width direction W at the top of the plate surface 110b of the end plate 110. Four screw shafts 123 are arranged in the width direction W at the flange 122 at the top of the outer peripheral wall 121 facing the end plate 110 so as to match the arrangement of the mounting holes 110a. The screw shafts 123 are approximately cylindrical members that extend in the height direction H from the upper surface 122a of the flange 122 and have a screw groove formed on the outer peripheral surface. The upper surface 122a of the flange 122 is an example of the upper surface of the outer peripheral wall 121, but if the flange 122 is not provided, the screw shafts 123 are provided on the upper end surface of the outer peripheral wall 121.

組付け穴１１０ａは長さ方向Ｌに延び、螺子軸１２３は高さ方向Ｈに延びる。組付け穴１１０ａ及び螺子軸１２３は、後述するようにブラケットまたは取り外し治具の組み付けに用いられる。 The mounting hole 110a extends in the length direction L, and the screw shaft 123 extends in the height direction H. The mounting hole 110a and the screw shaft 123 are used to attach a bracket or a removal jig, as described below.

また、外周壁１２１の内面には、凹部１２１ａが設けられている。凹部１２１ａは、鍔部１２２上の互いに隣接する螺子軸１２３同士の間から底面１２０まで下部ケース１２の深さ方向に延びる。凹部１２１ａは、取り外し治具の位置決めに用いられる。凹部１２１ａの裏面にはリブ（不図示）が形成されているため、リブがない場合と比べると、下部ケース１２の強度が高い。 Furthermore, a recess 121a is provided on the inner surface of the outer peripheral wall 121. The recess 121 a extends in the depth direction of the lower case 12 from between the adjacent screw shafts 123 on the flange 122 to the bottom surface 120 . The recess 121a is used for positioning the removal jig. Since a rib (not shown) is formed on the back surface of the recess 121a, the strength of the lower case 12 is higher than in the case where there is no rib.

また、電池パック１の下方には、冷却器２及びシェアパネル３が設けられている。シェアパネル３は、電池パック１及び冷却器２を固定する。冷却器２は、電池パック１の下面に接触した状態で固定される。冷却器２は、冷却水などの冷却媒体が流れることにより電池パック１の熱を冷却する。 Further, below the battery pack 1, a cooler 2 and a share panel 3 are provided. The share panel 3 fixes the battery pack 1 and the cooler 2. The cooler 2 is fixed in contact with the lower surface of the battery pack 1. The cooler 2 cools down the heat of the battery pack 1 by flowing a cooling medium such as cooling water.

冷却器２は、フレーム部２０、複数の流路部２１、及び複数の結合部２２を有する。フレーム部２０は、幅方向Ｗの一端の中央部が欠けた略矩形状の中空の枠部材であり、欠けた部位の両側の端部２０ａ，２０ｂの一方には冷却媒体が流入し、端部２０ａ，２０ｂの他方から流出する。 The cooler 2 has a frame section 20, multiple flow path sections 21, and multiple connection sections 22. The frame section 20 is a hollow frame member having a substantially rectangular shape with one end in the width direction W missing at the center, and the cooling medium flows into one of the ends 20a, 20b on both sides of the missing section and flows out from the other end 20a, 20b.

複数の流路部２１は、長さ方向Ｌに沿ってフレーム部２０の一方の辺と他方の辺の間を結ぶように設けられている。流路部２１の内部には、冷却媒体が流れる流路が設けられている。 The multiple flow path sections 21 are provided so as to connect one side and the other side of the frame section 20 along the longitudinal direction L. Inside the flow path section 21, a flow path through which the cooling medium flows is provided.

結合部２２は、流路部２１同士、または流路部２１とフレーム部２０の間に設けられた平板状部材である。結合部２２の板面の中央には、シェアパネル３に固定するための結合穴２２ａが設けられている。 The connecting portion 22 is a flat plate-like member provided between the flow path portions 21 or between the flow path portion 21 and the frame portion 20. A connecting hole 22a is provided in the center of the plate surface of the connecting portion 22 for fixing to the share panel 3.

シェアパネル３は、略矩形状の平板部材であり、電池パック１及び冷却器２が固定される基部である。シェアパネル３は、冷却器２の結合部２２に重なるように配置された複数の膨出部３０を有する。各膨出部３０の中央には、結合部２２と結合するための結合穴３０ａが設けられている。 The share panel 3 is a flat member having a substantially rectangular shape, and is a base to which the battery pack 1 and the cooler 2 are fixed. The share panel 3 has a number of bulging portions 30 arranged to overlap the joint portions 22 of the cooler 2. A joint hole 30a is provided in the center of each bulging portion 30 for joining to the joint portion 22.

図２は、図１のＡ－Ａ線に沿った部分断面図である。図２には、電池スタック１１ｃの下部の断面を示すが、他の電池スタック１１ａ，１１ｂ，１１ｄの下部も電池スタック１１ｃの下部と同様の構成である。シェアパネル３、冷却器２、及び下部ケース１２は高さ方向Ｈに重なっている。 Figure 2 is a partial cross-sectional view taken along line A-A in Figure 1. Figure 2 shows a cross-section of the lower part of battery stack 11c, but the lower parts of the other battery stacks 11a, 11b, and 11d have the same configuration as the lower part of battery stack 11c. The share panel 3, cooler 2, and lower case 12 overlap in the height direction H.

下部ケース１２の底面１２０には、冷却器２の結合穴２２ａに重なるように結合穴１２０ａが設けられている。下部ケース１２の結合穴１２０ａ、冷却器２の結合穴２２ａ、及びシェアパネル３の結合穴３０ａは互いに重なり合い、ボルト３１及びナット３２により締結される。 The bottom surface 120 of the lower case 12 has a connecting hole 120a that overlaps with the connecting hole 22a of the cooler 2. The connecting hole 120a of the lower case 12, the connecting hole 22a of the cooler 2, and the connecting hole 30a of the share panel 3 overlap with each other and are fastened by a bolt 31 and a nut 32.

流路部２１は、互いに重ね合わせられた上部流路板２１０及び下部流路板２１１を有する。下部流路板２１１には、上部流路板２１０とは反対側に突出する複数のリブ２１１ａが設けられている。リブ２１１ａの裏側の隙間２３には冷却媒体が流れる。 The flow path section 21 has an upper flow path plate 210 and a lower flow path plate 211 that are stacked on top of each other. The lower passage plate 211 is provided with a plurality of ribs 211a that protrude on the opposite side from the upper passage plate 210. A cooling medium flows through the gap 23 on the back side of the rib 211a.

上部流路板２１０は、下部ケース１２を挟んで接着層１２４に重なる。接着層１２４は、電池スタック１１ｃを下部ケース１２の底面１２０に接着する。電池スタック１１ｃの熱は、下部ケース１２の底面１２０を介し冷却器２に伝導する。このため、接着層１２４の素材は、電池スタック１１ｃの放熱性を高めるため、熱伝導の高い熱伝導材であることが好ましい。 The upper channel plate 210 overlaps the adhesive layer 124 with the lower case 12 in between. Adhesive layer 124 adheres battery stack 11c to bottom surface 120 of lower case 12. Heat from the battery stack 11c is conducted to the cooler 2 via the bottom surface 120 of the lower case 12. Therefore, the material of the adhesive layer 124 is preferably a thermally conductive material with high thermal conductivity in order to improve the heat dissipation of the battery stack 11c.

このように、電池スタック１１ａ～１１ｄは下部ケース１２の底面１２０に接着されている。また、電池スタック１１ａ～１１ｄは、以下に述べるように、ブラケットにより下部ケース１２に組付けられている。 In this way, the battery stacks 11a to 11d are adhered to the bottom surface 120 of the lower case 12. Furthermore, the battery stacks 11a to 11d are assembled to the lower case 12 with brackets, as described below.

（下部ケースに対する電池パックの組付け）
図３は、下部ケース１２に対する電池スタック１１ａ～１１ｄの組付け方法の一例を示す斜視図である。図３において、図１と共通する構成には同一の符号を付し、その説明は省略する。 (Assembling the battery pack to the lower case)
FIG. 3 is a perspective view showing an example of a method for assembling the battery stacks 11a to 11d to the lower case 12. In FIG. 3, components common to those in FIG. 1 are denoted by the same reference numerals, and explanations thereof will be omitted.

符号Ｇ３ａは、ブラケット４により下部ケース１２に電池スタック１１ａを組付ける前の状態を示し、符号Ｇ３ｂは、ブラケット４により下部ケース１２に電池スタック１１ａを組付けた状態を示す。なお、本例では、電池スタック１１ａの長さ方向Ｌの一端における組付けを挙げるが、電池スタック１１ａの長さ方向Ｌの他端においても、以下に述べる方法で組付けが行われる。また、他の電池スタック１１ｂ～１１ｄの両端においても、これと同じ方法で組付けが行われる。 Reference symbol G3a indicates the state before the battery stack 11a is assembled to the lower case 12 by the bracket 4, and reference symbol G3b indicates the state after the battery stack 11a is assembled to the lower case 12 by the bracket 4. Note that in this example, assembly at one end of the battery stack 11a in the length direction L is shown, but assembly is also performed at the other end of the battery stack 11a in the length direction L in the manner described below. Also, assembly is performed in the same manner at both ends of the other battery stacks 11b to 11d.

ブラケット４は、幅方向Ｗに沿った側面視において略Ｌ字形状を有する。ブラケット４は、例えば板金により形成され、エンドプレート１１０の板面と対向する略平板形状の電池固定部４０、及び下部ケース１２の鍔部の上面と対向する略平板形状のケース固定部４１を有する。 The bracket 4 has a substantially L-shape when viewed from the side in the width direction W. The bracket 4 is formed of, for example, a sheet metal, and has a battery fixing part 40 having a substantially flat plate shape facing the plate surface of the end plate 110 and a case fixing part 41 having a generally flat plate shape facing the upper surface of the flange part of the lower case 12. .

電池固定部４０は、幅方向Ｗ及び高さ方向Ｈに沿った板面を有し、板面には、エンドプレート１１０の４個の組付け穴１１０ａに合わせて幅方向Ｗに並んだ４個の固定穴４０ａが設けられている。また、ケース固定部４１は、幅方向Ｗ及び長さ方向Ｌに沿った板面を有し、板面には、下部ケース１２の４個の螺子軸１２３に合わせて幅方向Ｗに並んだ４個の固定穴４１ａが設けられている。 The battery fixing part 40 has a plate surface along the width direction W and the height direction H, and the plate surface has four holes arranged in the width direction W to match the four assembly holes 110a of the end plate 110. A fixing hole 40a is provided. Further, the case fixing part 41 has a plate surface along the width direction W and the length direction L, and the plate surface has four screws arranged in the width direction W in line with the four screw shafts 123 of the lower case 12. Fixing holes 41a are provided.

電池固定部４０の各固定穴４０ａは、エンドプレート１１０の各組付け穴１１０ａに重なる。この状態において、ボルト４３が、固定穴４０ａを通って組付け穴１１０ａに螺合される。このため、電池固定部４０はエンドプレート１１０に締結される。 Each fixing hole 40a of the battery fixing part 40 overlaps each assembly hole 110a of the end plate 110. In this state, the bolt 43 passes through the fixing hole 40a and is screwed into the assembly hole 110a. Therefore, the battery fixing part 40 is fastened to the end plate 110.

また、下部ケース１２の各螺子軸１２３は、ケース固定部４１の各固定穴４１ａにそれぞれ挿通される。この状態において、ナット４２が各螺子軸１２３に螺合される。このため、ケース固定部４１は下部ケース１２に締結される。 The screw shafts 123 of the lower case 12 are inserted into the fixing holes 41a of the case fixing part 41. In this state, the nuts 42 are screwed onto the screw shafts 123. As a result, the case fixing part 41 is fastened to the lower case 12.

これにより、ブラケット４は、エンドプレート１１０の板面１１０ｂと下部ケース１２の鍔部１２２の上面１２２ａの間を接合し、下部ケース１２に電池スタック１１ａ～１１ｄを組付ける。なお、ブラケット４は、電池スタック１１ａ～１１ｄの端面及び外周壁１２１の上面の間を接合する接合部材の一例である。 As a result, the bracket 4 joins the plate surface 110b of the end plate 110 and the upper surface 122a of the flange 122 of the lower case 12, and the battery stacks 11a to 11d are assembled to the lower case 12. Note that the bracket 4 is an example of a joining member that joins the end surfaces of the battery stacks 11a to 11d and the upper surface of the outer peripheral wall 121.

エンドプレート１１０の組付け穴１１０ａは、電池スタック１１ａ～１１ｄが下部ケース１２に収容されているとき、鍔部１２２の上面１２２ａから上方に露出する。各組付け穴１１０ａは、下部ケース１２から電池スタック１１ａ～１１ｄが取り外される場合、ブラケット４が取り外された後、取り外し治具の上部組付け部材の組付けに用いられる。また、鍔部１２２の各螺子軸１２３は、下部ケース１２から電池スタック１１ａ～１１ｄが取り外される場合、ブラケット４が取り外された後、取り外し治具の下部組付け部材の組付けに用いられる。 The assembly hole 110a of the end plate 110 is exposed upward from the upper surface 122a of the collar portion 122 when the battery stacks 11a to 11d are housed in the lower case 12. When the battery stacks 11a to 11d are removed from the lower case 12, each assembly hole 110a is used for assembling the upper assembly member of the removal jig after the bracket 4 is removed. Furthermore, when the battery stacks 11a to 11d are removed from the lower case 12, each screw shaft 123 of the collar portion 122 is used for assembling the lower assembly member of the removal jig after the bracket 4 is removed.

（取り外し治具）
取り外し治具は、エンドプレート１１０の板面１１０ｂに組付けられる上部組付け部材、及び鍔部１２２の上面１２２ａに組付けられる下部組付け部材を有する。 (Removal tool)
The removal jig has an upper assembly member that is attached to the plate surface 110 b of the end plate 110 , and a lower assembly member that is attached to the upper surface 122 a of the flange portion 122 .

図４は、上部組付け部材５の一例を示す図である。図４には、上部組付け部材５の上面図（「上面」）、正面図（「正面」）、側面図（「側面」）、上面図のＢ－Ｂ線に沿った断面図（「Ｂ－Ｂ断面」）、及び正面図のＣ－Ｃ線に沿った断面図（「Ｃ－Ｃ断面」）が示されている。 FIG. 4 is a diagram showing an example of the upper assembly member 5. As shown in FIG. FIG. 4 shows a top view (“Top”), a front view (“Front”), a side view (“Side”) of the upper assembly member 5, and a sectional view (“B”) taken along line BB of the top view. -B cross section), and a cross-sectional view along line CC of the front view ("CC cross section").

上面図は、上部組付け部材５がエンドプレート１１０の板面１１０ｂに組付けられたとき、高さ方向の上方から見た上部組付け部材５を示す。正面図は、上部組付け部材５がエンドプレート１１０の板面１１０ｂに組付けられたとき、長さ方向Ｌの一端から見た上部組付け部材５を示す。側面図は、上部組付け部材５がエンドプレート１１０の板面１１０ｂに組付けられたとき、幅方向Ｗの一端から見た上部組付け部材５を示す。 The top view shows the upper assembly member 5 viewed from above in the height direction when the upper assembly member 5 is assembled to the plate surface 110b of the end plate 110. The front view shows the upper assembly member 5 viewed from one end in the length direction L when the upper assembly member 5 is assembled to the plate surface 110b of the end plate 110. The side view shows the upper assembly member 5 viewed from one end in the width direction W when the upper assembly member 5 is assembled to the plate surface 110b of the end plate 110.

上部組付け部材５は、幅方向Ｗに延びる角柱形状の部材である。上部組付け部材５は、例えばＳＵＳ（Steel Use Stainless）により形成され、高さ方向Ｈにおいて、下方に位置する基部５４、及び上方に位置する平板部５０を有する。 The upper assembly member 5 is a prismatic member extending in the width direction W. The upper assembly member 5 is made of, for example, SUS (Steel Use Stainless), and has a base portion 54 located below and a flat plate portion 50 located above in the height direction H.

基部５４は、幅方向Ｗに一定間隔で並んだ４個の凹部５２を有する。基部５４には、凹部５２から背面５５側に貫通する貫通孔５３が設けられている。貫通孔５３は、上部組付け部材５をエンドプレート１１０組付け穴１１０ａに螺子止めするために用いられる。 The base 54 has four recesses 52 spaced at regular intervals in the width direction W. The base 54 has a through hole 53 that penetrates from the recesses 52 to the back surface 55 side. The through hole 53 is used to screw the upper assembly member 5 into the assembly hole 110a of the end plate 110.

また、平板部５０は、基部５４から正面側に突出している。平板部５０及び基部５４には、高さ方向Ｈ（上下方向）、つまり下部ケース２の深さ方向に貫通する５個の螺子孔５１が設けられている。５個の螺子孔５１は、幅方向Ｗにおいて、凹部５２を避けるように並んでいる。より具体的には、螺子孔５１及び凹部５２は、幅方向Ｗに交互に並ぶように配置されている。 Furthermore, the flat plate portion 50 protrudes from the base portion 54 toward the front side. The flat plate portion 50 and the base portion 54 are provided with five screw holes 51 that penetrate in the height direction H (vertical direction), i.e., in the depth direction of the lower case 2. The five screw holes 51 are arranged in the width direction W so as to avoid the recesses 52. More specifically, the screw holes 51 and the recesses 52 are arranged so as to be alternately arranged in the width direction W.

このため、螺子孔５１は、平板部５０及び基部５４の各厚みの合計に相当する深さを有する。螺子孔５１は、電池スタック１１ａ～１１ｄを下部ケース１２から取り外すとき、下部組付け部材に当接するボルトの螺子軸と螺合する。 For this reason, the screw holes 51 have a depth equivalent to the sum of the thicknesses of the flat plate portion 50 and the base portion 54. When the battery stacks 11a to 11d are removed from the lower case 12, the screw holes 51 screw into the screw shafts of the bolts that come into contact with the lower assembly members.

図５は、下部組付け部材６の一例を示す図である。図５には、下部組付け部材６の上面図（「上面」）、正面図（「正面」）、側面図（「側面」）、及び上面図のＤ－Ｄ線に沿った断面図（「Ｄ－Ｄ断面」）が示されている。 FIG. 5 is a diagram showing an example of the lower assembly member 6. As shown in FIG. FIG. 5 shows a top view (“top”), a front view (“front”), a side view (“side”) of the lower assembly member 6, and a sectional view (“ DD cross section) is shown.

上面図は、下部組付け部材６が鍔部１２２の上面１２２ａに組付けられたとき、高さ方向の上方から見た下部組付け部材６を示す。正面図は、下部組付け部材６が鍔部１２２の上面１２２ａに組付けられたとき、長さ方向Ｌの一端から見た下部組付け部材６を示す。側面図は、下部組付け部材６が鍔部１２２の上面１２２ａに組付けられたとき、幅方向Ｗの一端から見た下部組付け部材６を示す。 The top view shows the lower assembly member 6 as viewed from above in the height direction when the lower assembly member 6 is attached to the upper surface 122a of the flange 122. The front view shows the lower assembly member 6 as viewed from one end in the length direction L when the lower assembly member 6 is attached to the upper surface 122a of the flange 122. The side view shows the lower assembly member 6 as viewed from one end in the width direction W when the lower assembly member 6 is attached to the upper surface 122a of the flange 122.

下部組付け部材６は、例えばＳＵＳ（Steel Use Stainless）により形成され、鍔部１２２の上面１２２ａに固定される板状部６０、及びエンドプレート１１０の板面１１０ｂと下部ケース１２の凹部１２１ａの間の隙間に挿入される２個の脚部６２を有する。板状部６０は幅方向Ｗに延びる板形状の部分であり、板状部６０の上面には、鍔部１２２に組付けるナット４２を収容する４個の収容穴６１が一定間隔をおいて設けられている。 The lower assembly member 6 is formed of, for example, SUS (Steel Use Stainless), and includes a plate-shaped portion 60 fixed to the upper surface 122a of the flange portion 122, and a portion between the plate surface 110b of the end plate 110 and the recessed portion 121a of the lower case 12. It has two legs 62 that are inserted into the gap between the two legs. The plate-shaped portion 60 is a plate-shaped portion extending in the width direction W, and four housing holes 61 for accommodating the nuts 42 to be assembled to the collar portion 122 are provided at regular intervals on the upper surface of the plate-shaped portion 60. It is being

各収容穴６１の底面の中央には、鍔部１２２の螺子軸１２３を挿通する挿通孔６１０が設けられている。挿通孔６１０は、板状部６０を高さ方向Ｈ（厚み方向）に貫通する。 An insertion hole 610 through which the screw shaft 123 of the collar portion 122 is inserted is provided at the center of the bottom surface of each accommodation hole 61 . The insertion hole 610 penetrates the plate-like portion 60 in the height direction H (thickness direction).

脚部６２は、挿通孔６１０を避けるように板状部６０の下面６４から高さ方向Ｈ（下方）に延びる。各脚部６２は、下部ケース１２の外周壁１２１の凹部１２１ａの位置に合うように設けられる。 The legs 62 extend in the height direction H (downward) from the lower surface 64 of the plate-shaped portion 60 so as to avoid the insertion holes 610. Each leg 62 is provided so as to match the position of the recess 121a in the outer peripheral wall 121 of the lower case 12.

（取り外し治具の組付け方法）
図６は、取り外し治具９の組付け方法の一例を示す斜視図である。図６において、図１と共通する構成には同一の符号を付し、その説明は省略する。 (How to install the removal jig)
Fig. 6 is a perspective view showing an example of a method for assembling the removal jig 9. In Fig. 6, the same components as those in Fig. 1 are given the same reference numerals, and the description thereof will be omitted.

符号Ｇ６ａは、取り外し治具９を組付ける前の状態を示し、符号Ｇ６ｂは、取り外し治具９を組付けた状態を示す。なお、本例では、電池スタック１１ａの長さ方向Ｌの一端における組付けを挙げるが、電池スタック１１ａの長さ方向Ｌの他端においても、以下に述べる方法で組付けが行われる。また、他の電池スタック１１ｂ～１１ｄの両端においても、これと同じ方法で組付けが行われる。 Reference symbol G6a indicates the state before the removal jig 9 is installed, and reference symbol G6b indicates the state after the removal jig 9 is installed. Note that in this example, the assembly at one end of the length direction L of the battery stack 11a is shown, but the assembly at the other end of the length direction L of the battery stack 11a is also performed in the manner described below. The same method is also used to assemble the other two ends of the battery stacks 11b to 11d.

取り外し治具９は、上述したように、上部組付け部材５及び下部組付け部材６を有する。取り外し治具９は、下部ケース１２から電池スタック１１ａ～１１ｄを取り外す取り外し装置の一例である。なお、電池スタック１１ａ～１１ｄの取り外し方法は後述する。 The removal jig 9 has the upper assembly member 5 and the lower assembly member 6, as described above. The removal jig 9 is an example of a removal device for removing the battery stacks 11a to 11d from the lower case 12. Note that the method for removing the battery stacks 11a to 11d will be described later.

上部組付け部材５は、外周壁１２１の上面１２２ａから露出した電池スタック１１ａ～１１ｄの端面に組付けられる第１組付け部材の一例である。上部組付け部材５は、ボルト４３及び貫通孔５３によりエンドプレート１１０の板面１１０ｂに組付けられる。ボルト４３は、上部組付け部材５の背面５５がエンドプレート１１０の板面１１０ｂに接した状態において、貫通孔５３を通ってエンドプレート１１０の板面１１０ｂ上の組付け穴１１０ａに螺子止めされる。これにより、上部組付け部材５は、エンドプレート１１０の板面１１０ｂに締結される。なお、組付け穴１１０ａは、上部組付け部材５を締結するための第１締結手段の一例である。 The upper assembly member 5 is an example of a first assembly member that is attached to the end surface of the battery stacks 11a to 11d exposed from the upper surface 122a of the outer peripheral wall 121. The upper assembly member 5 is attached to the plate surface 110b of the end plate 110 by the bolt 43 and the through hole 53. The bolt 43 is screwed into the assembly hole 110a on the plate surface 110b of the end plate 110 through the through hole 53 with the back surface 55 of the upper assembly member 5 in contact with the plate surface 110b of the end plate 110. In this way, the upper assembly member 5 is fastened to the plate surface 110b of the end plate 110. The assembly hole 110a is an example of a first fastening means for fastening the upper assembly member 5.

下部組付け部材６は、下部ケース２の深さ方向で上部組付け部材５と重なるように、外周壁１２１の上面に組付けられる第２組付け部材の一例である。下部組付け部材６は、上部組付け部材５の下方に位置し、ナット４２及び挿通孔６１０により鍔部１２２の上面１２２ａに組付けられる。鍔部１２２の上面１２２ａに設けられた螺子軸１２３は、下部組付け部材６の下面６４が鍔部１２２の上面１２２ａに接した状態において、挿通孔６１０に挿通され、ナット４２は、挿通孔６１０から上方に露出した螺子軸１２３に螺子止めされる。これにより、下部組付け部材６は、鍔部１２２の上面１２２ａに締結される。なお、螺子軸１２３は、下部組付け部材６を締結するための第２締結手段の一例である。 The lower assembly member 6 is an example of a second assembly member that is assembled to the upper surface of the outer wall 121 so as to overlap with the upper assembly member 5 in the depth direction of the lower case 2. The lower assembly member 6 is located below the upper assembly member 5 and is assembled to the upper surface 122a of the flange portion 122 by the nut 42 and the insertion hole 610. The screw shaft 123 provided on the upper surface 122a of the flange portion 122 is inserted into the insertion hole 610 with the lower surface 64 of the lower assembly member 6 in contact with the upper surface 122a of the flange portion 122, and the nut 42 is screwed to the screw shaft 123 exposed upward from the insertion hole 610. As a result, the lower assembly member 6 is fastened to the upper surface 122a of the flange portion 122. The screw shaft 123 is an example of a second fastening means for fastening the lower assembly member 6.

また、図７は、図６のＥ－Ｅ線に沿った部分断面図である。下部組付け部材６の各脚部６２は、下部ケース１２の凹部１２１ａとエンドプレート１１０の板面１１０ｂの間の隙間Ｓに挿入される。このため、下部組付け部材６に脚部６２が設けられていない場合と比べると、下部ケース１２に対する下部組付け部材６の位置決めが容易となる。 Further, FIG. 7 is a partial cross-sectional view taken along the line EE in FIG. 6. Each leg 62 of the lower assembly member 6 is inserted into a gap S between the recess 121a of the lower case 12 and the plate surface 110b of the end plate 110. Therefore, positioning of the lower assembly member 6 with respect to the lower case 12 becomes easier than when the lower assembly member 6 is not provided with the leg portions 62.

取り外し治具９の組付けは、下部ケース１２及び電池スタック１１ａ～１１ｄからブラケット４が取り外された後に行われる。最初に下部組付け部材６が鍔部１２２の上面１２２ａに組付けられ、次に上部組付け部材５がエンドプレート１１０の板面１１０ｂに組み付けられる。このとき、下部組付け部材６は、上部組付け部材５の下方に位置しており、下部組付け部材６の板状部６０は、上部組付け部材５の基部５４に上方から接する。 The removal jig 9 is assembled after the bracket 4 is removed from the lower case 12 and the battery stacks 11a to 11d. First, the lower assembly member 6 is assembled to the upper surface 122a of the collar portion 122, and then the upper assembly member 5 is assembled to the plate surface 110b of the end plate 110. At this time, the lower assembly member 6 is located below the upper assembly member 5, and the plate-shaped portion 60 of the lower assembly member 6 contacts the base portion 54 of the upper assembly member 5 from above.

取り外し治具９の組付け後、上部組付け部材５の螺子孔５１に治具ボルト７が螺合される。治具ボルト７が回転すると、治具ボルト７の螺子軸の先端が螺子孔５１内を下方に進んで下部組付け部材６の板状部６０に当接する。この状態において、治具ボルト７をさらに回転させると、治具ボルト７は螺子孔５１内を下方向に進もうとするため、上部組付け部材５が上方向に移動する。このため、電池スタック１１ａ～１１ｄは、上部組付け部材５の移動に伴って上方向に持ち上げられて下部ケース１２から引きはがされる。 After the removal jig 9 is assembled, the jig bolt 7 is screwed into the screw hole 51 of the upper assembly member 5. When the jig bolt 7 rotates, the tip of the threaded shaft of the jig bolt 7 advances downward within the screw hole 51 and comes into contact with the plate-shaped portion 60 of the lower assembly member 6. In this state, when the jig bolt 7 is further rotated, the jig bolt 7 tends to move downward within the screw hole 51, and thus the upper assembly member 5 moves upward. Therefore, the battery stacks 11a to 11d are lifted upward and peeled off from the lower case 12 as the upper assembly member 5 moves.

（電池スタックの取り外し方法）
図８は、電池スタック１１ａ～１１ｄの取り外し方法の一例を示す図である。図８は、図６の符号Ｇ６ａが示す斜視図のＦ－Ｆ線に沿った断面を示す。図８において、図６と共通する構成には同一の符号を付し、その説明は省略する。 (How to remove battery stack)
FIG. 8 is a diagram showing an example of a method for removing battery stacks 11a to 11d. FIG. 8 shows a cross section along line FF of the perspective view indicated by reference numeral G6a in FIG. In FIG. 8, components common to those in FIG. 6 are denoted by the same reference numerals, and their explanations will be omitted.

なお、本例では、電池スタック１１ａの長さ方向Ｌの一端を持ち上げることにより下部ケース１２から引きはがす例を挙げるが、電池スタック１１ａの長さ方向Ｌの他端も、以下に述べる方法で下部ケース１２から引きはがすことができる。また、他の電池スタック１１ｂ～１１ｄも、これと同じ方法で下部ケース１２から引きはがすことができる。 In this example, the battery stack 11a is removed from the lower case 12 by lifting one end of the battery stack 11a in the length direction L, but the other end of the battery stack 11a in the length direction L is also removed from the lower part by the method described below. It can be peeled off from the case 12. Further, the other battery stacks 11b to 11d can also be peeled off from the lower case 12 in the same manner.

符号Ｇ８ａは、電池スタック１１ａの取り外し前の状態を示す。治具ボルト７は、その螺子軸７０の先端７０ａが下部組付け部材６の板状部６０の板面に当接する位置まで上部組付け部材５の螺子孔５１に螺合されている。このとき、螺子軸７０の姿勢は、螺子孔５１により板状部６０の板面に対して略垂直に支持されている。 The symbol G8a indicates the state before the battery stack 11a is removed. The jig bolt 7 is screwed into the screw hole 51 of the upper assembly member 5 until the tip 70a of the screw shaft 70 abuts against the plate surface of the plate-shaped portion 60 of the lower assembly member 6. At this time, the screw shaft 70 is supported by the screw hole 51 so that it is approximately perpendicular to the plate surface of the plate-shaped portion 60.

治具ボルト７の螺子軸７０の長さＬｖは、上部組付け部材５の螺子孔５１の深さＤｈより大きい。このため、螺子軸７０の上部は、螺子孔５１から露出している。また、電池スタック１１ａは、接着層１２４を介して下部ケース１２の底面１２０に接着されている。 The length Lv of the screw shaft 70 of the jig bolt 7 is greater than the depth Dh of the screw hole 51 of the upper assembly member 5. Therefore, the upper part of the screw shaft 70 is exposed from the screw hole 51. In addition, the battery stack 11a is adhered to the bottom surface 120 of the lower case 12 via an adhesive layer 124.

符号Ｇ８ｂは、電池スタック１１ａの取り外し後の状態を示す。治具ボルト７は、その螺子軸７０の先端７０ａが下部組付け部材６の板状部６０の板面に当接したまま、回転方向Ｒに回転させられる。下部組付け部材６は、上部組付け部材５の螺子孔５１に螺合して回転する螺子軸７０の先端７０ａに当接する。 The symbol G8b indicates the state after the battery stack 11a is removed. The jig bolt 7 is rotated in the rotation direction R while the tip 70a of the screw shaft 70 is in contact with the plate surface of the plate-shaped portion 60 of the lower assembly member 6. The lower assembly member 6 is in contact with the tip 70a of the screw shaft 70 that is screwed into the screw hole 51 of the upper assembly member 5 and rotates.

螺子軸７０は、螺子孔５１より長いため、回転により螺子孔５１内をさらに螺子孔５１内を下方向に進もうとするため、上部組付け部材５が上方向に移動する。このため、電池スタック１１ａ～１１ｄは、上部組付け部材５の移動に伴って上方向に持ち上げられて下部ケース１２から引きはがされる（矢印ｄ参照）。 Because the screw shaft 70 is longer than the screw hole 51, it tends to move further downward within the screw hole 51 as it rotates, causing the upper assembly member 5 to move upward. As a result, the battery stacks 11a to 11d are lifted upward as the upper assembly member 5 moves, and are pulled off the lower case 12 (see arrow d).

このように、本例によると、治具ボルト７の螺子軸７０を上部組付け部材５の螺子孔５１に螺合し、下部組付け部材６が螺子軸７０の先端７０ａに当接した状態で治具ボルト７を回転させることにより、下部ケース１２から電池スタック１１ａ～１１ｄを容易に取り外すことができる。 As described above, according to this example, the screw shaft 70 of the jig bolt 7 is screwed into the screw hole 51 of the upper assembly member 5, and the lower assembly member 6 is in contact with the tip 70a of the screw shaft 70. By rotating the jig bolt 7, the battery stacks 11a to 11d can be easily removed from the lower case 12.

また、下部組付け部材６の板状部６０は、下部ケース１２の鍔部１２２の上面１２２ａに固定され、螺子軸７０の先端７０ａに当接する。このため、例えば下部組付け部材６の上面から螺子孔５１内に突出する突起が螺子軸７０の先端７０ａに当接する場合と比べると、螺子孔５１内部で回転中の螺子軸７０の姿勢を安定に維持することができる。 Further, the plate-shaped portion 60 of the lower assembly member 6 is fixed to the upper surface 122a of the flange portion 122 of the lower case 12, and comes into contact with the tip 70a of the screw shaft 70. For this reason, the posture of the screw shaft 70 rotating inside the screw hole 51 is stabilized, compared to the case where, for example, a projection protruding into the screw hole 51 from the upper surface of the lower assembly member 6 comes into contact with the tip 70a of the screw shaft 70. can be maintained.

また、下部組付け部材６の各脚部６２は、上述したように、下部ケース１２の凹部１２１ａとエンドプレート１１０の板面１１０ｂの間の隙間Ｓに挿入される。このため、螺子軸７０の姿勢をさらに安定に維持することができる。 Further, each leg 62 of the lower assembly member 6 is inserted into the gap S between the recess 121a of the lower case 12 and the plate surface 110b of the end plate 110, as described above. Therefore, the posture of the screw shaft 70 can be maintained more stably.

また、エンドプレート１１０の板面１１０ｂの組付け穴１１０ａ及び下部ケース１２の鍔部１２２の螺子軸１２３は、上部組付け部材５及び下部組付け部材６が締結されていないとき、図３を参照して述べたように、ブラケット４の締結に用いられる。すなわち、組付け穴１１０ａ及び螺子軸１２３は、上部組付け部材５及び下部組付け部材６の締結とブラケット４の締結の両方に用いられる。 In addition, when the upper assembly member 5 and the lower assembly member 6 are not fastened, the assembly hole 110a of the plate surface 110b of the end plate 110 and the screw shaft 123 of the flange 122 of the lower case 12 are connected as shown in FIG. As described above, it is used to fasten the bracket 4. That is, the assembly hole 110a and the screw shaft 123 are used both for fastening the upper assembly member 5 and the lower assembly member 6 and for fastening the bracket 4.

このため、電池スタック１１ａ～１１ｄは、下部ケース１２の底面１２０に接着されて収容されている状態において、ブラケット４を下部ケース１２及び電池スタック１１ａ～１１ｄから取り外すことができる。したがって、電池スタック１１ａ～１１ｄを下部ケース１２から取り外すことがさらに容易である。 Therefore, the bracket 4 can be removed from the lower case 12 and the battery stacks 11a to 11d while the battery stacks 11a to 11d are housed in a state where they are adhered to the bottom surface 120 of the lower case 12. Therefore, it is easier to remove the battery stacks 11a to 11d from the lower case 12.

上述した実施形態は本発明の好適な実施の例である。但し、これに限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変形実施可能である。 The above-described embodiment is a preferred example of the present invention. However, the present invention is not limited to this embodiment, and various modifications are possible without departing from the spirit of the present invention.

１ 電池パック
７ 治具ボルト
４ ブラケット（接合部材）
５ 上部組付け部材（第１組付け部材）
６ 下部組付け部材（第２組付け部材）
９ 取り外し装置（取り外し治具）
１１ａ～１１ｄ 電池スタック
１２ 下部ケース（ケース）
５１ 螺子孔
６０ 板状部
６２ 脚部
７０ 螺子軸
７０ａ 先端
１１０ エンドプレート
１１０ａ 組付け穴（第１締結手段）
１１０ｂ 板面（端面）
１２０ 底面
１２１ 外周壁
１２１ａ 凹部
１２２ａ 上面
１２３ 螺子軸（第２締結手段）
 1 Battery pack 7 Jig bolt 4 Bracket (joining member)
5 Upper assembly member (first assembly member)
6 Lower assembly member (second assembly member)
9 Removal device (removal jig)
11a-11d Battery stack 12 Lower case (case)
51 Screw hole 60 Plate portion 62 Leg portion 70 Screw shaft 70a Tip 110 End plate 110a Assembly hole (first fastening means)
110b Plate surface (end surface)
120 Bottom surface 121 Outer peripheral wall 121a Recessed portion 122a Top surface 123 Screw shaft (second fastening means)

Claims (10)

複数の電池セルが積層された電池スタックと、
前記電池スタックを外周壁で囲むように収容するケースと、
前記外周壁の上面から露出した前記電池スタックの端面に組付けられる第１組付け部材と、
前記ケースの深さ方向で前記第１組付け部材と重なるように、前記外周壁の上面に組付けられる第２組付け部材とを有し、
前記第１組付け部材は、前記ケースの深さ方向に貫通する螺子孔を有し、
前記第２組付け部材は、前記螺子孔に螺合して回転する螺子軸の先端部に当接する、
電池パック。 A battery stack in which multiple battery cells are stacked,
a case that accommodates the battery stack so as to be surrounded by an outer peripheral wall;
a first assembly member assembled to an end surface of the battery stack exposed from the upper surface of the outer peripheral wall;
a second assembly member assembled to the upper surface of the outer peripheral wall so as to overlap with the first assembly member in the depth direction of the case;
The first assembly member has a screw hole that penetrates in the depth direction of the case,
The second assembly member abuts on a tip of the screw shaft that is screwed into the screw hole and rotates.
battery pack. 前記第２組付け部材は、前記外周壁の上面に固定される板状部を有し、
前記板状部は、前記螺子軸の先端部に当接する、
請求項１に記載の電池パック。 The second assembly member has a plate-shaped portion fixed to an upper surface of the outer peripheral wall,
The plate-shaped portion abuts against a tip portion of the screw shaft.
The battery pack according to claim 1 . 前記外周壁は、前記ケースの深さ方向に延びる凹部を有し、
前記第２組付け部材は、前記ケースの深さ方向に延び、前記電池スタックの端面と前記凹部の間の隙間に挿入される脚部を有する、
請求項１または２に記載の電池パック。 The outer peripheral wall has a recess extending in the depth direction of the case,
The second assembly member has legs that extend in the depth direction of the case and are inserted into the gap between the end surface of the battery stack and the recess.
The battery pack according to claim 1 or 2. 前記外周壁から上方に露出した前記電池スタックの端面には、前記第１組付け部材を締結するための第１締結手段が設けられ、
前記外周壁の上面には、前記第２組付け部材を締結するための第２締結手段が設けられ、
前記第１締結手段及び前記第２締結手段は、前記第１組付け部材及び前記第２組付け部材が締結されていないとき、前記電池スタックの端面及び前記外周壁の上面の間を接合する接合部材の締結に用いられる、
請求項１乃至３の何れかに記載の電池パック。 a first fastening means for fastening the first assembly member is provided on an end surface of the battery stack exposed upward from the outer peripheral wall;
A second fastening means for fastening the second assembly member is provided on an upper surface of the outer peripheral wall,
the first fastening means and the second fastening means are used to fasten a joining member that joins an end surface of the battery stack and an upper surface of the outer peripheral wall when the first assembly member and the second assembly member are not fastened.
4. The battery pack according to claim 1. 複数の電池セルが積層された電池スタックを外周壁で囲むように収容したケースから、前記電池スタックを取り外す取り外し装置において、
前記外周壁の上面から露出した前記電池スタックの端面に組付けられる第１組付け部材と、
前記ケースの深さ方向で前記第１組付け部材と重なるように、前記外周壁の上面に組付けられる第２組付け部材とを有し、
前記第１組付け部材は、前記ケースの深さ方向に貫通する螺子孔を有し、
前記第２組付け部材は、前記螺子孔に螺合して回転する螺子軸の先端部に当接する、
取り外し装置。 1. A removal device for removing a battery stack, in which a plurality of battery cells are stacked, from a case in which the battery stack is accommodated in such a manner that the battery stack is surrounded by an outer peripheral wall, comprising:
a first assembly member that is attached to an end surface of the battery stack that is exposed through an upper surface of the outer peripheral wall;
a second assembly member that is assembled to an upper surface of the outer peripheral wall so as to overlap with the first assembly member in a depth direction of the case,
the first assembly member has a screw hole penetrating in a depth direction of the case,
The second assembly member abuts against a tip end of a screw shaft that is screwed into the screw hole and rotates.
Removal device. 前記第２組付け部材は、前記外周壁の上面に固定される板状部を有し、
前記板状部は、前記螺子軸の先端部に当接する、
請求項５に記載の取り外し装置。 The second assembly member has a plate-shaped portion fixed to the upper surface of the outer peripheral wall,
the plate-shaped portion abuts the tip of the screw shaft;
A removal device according to claim 5. 前記外周壁は、前記ケースの深さ方向に延びる凹部を有し、
前記第２組付け部材は、前記ケースの深さ方向に延び、前記電池スタックの端面と前記凹部の間の隙間に挿入される脚部を有する、
請求項５または６に記載の取り外し装置。 The outer peripheral wall has a recess extending in a depth direction of the case,
the second assembly member has a leg portion extending in a depth direction of the case and inserted into a gap between an end surface of the battery stack and the recess.
7. The removal device according to claim 5 or 6. 複数の電池セルが積層された電池スタックを外周壁で囲むように収容したケースから前記電池スタックを取り外す、電池スタックの取り外し方法において、
前記外周壁の上面から露出した前記電池スタックの端面に、前記ケースの深さ方向に貫通する螺子孔を有する第１組付け部材を組付け、
前記ケースの深さ方向で前記第１組付け部材と重なるように、第２組付け部材を前記外周壁の上面に組付け、
前記螺子孔に螺子軸を螺合し、
前記第２組付け部材が前記螺子軸の先端部に当接した状態で前記螺子軸を回転させる、
電池スタックの取り外し方法。 A method for removing a battery stack, comprising the steps of: removing the battery stack, in which a plurality of battery cells are stacked, from a case that houses the battery stack in a manner that the battery stack is surrounded by an outer peripheral wall;
a first assembly member having a screw hole penetrating in a depth direction of the case is assembled to an end surface of the battery stack exposed from an upper surface of the outer peripheral wall;
a second assembly member is assembled to the upper surface of the outer peripheral wall so as to overlap with the first assembly member in a depth direction of the case;
A screw shaft is screwed into the screw hole,
The screw shaft is rotated in a state where the second assembly member is in contact with the tip portion of the screw shaft.
How to remove the battery stack. 前記第２組付け部材は、前記外周壁の上面に固定される板状部を有し、
前記板状部は、前記螺子軸の先端部に当接する、
請求項８に記載の電池スタックの取り外し方法。 the second assembly member has a plate-shaped portion fixed to an upper surface of the outer peripheral wall,
The plate-shaped portion abuts against a tip portion of the screw shaft.
The method for removing a battery stack according to claim 8. 前記外周壁は、前記ケースの深さ方向に延びる凹部を有し、
前記第２組付け部材は、前記ケースの深さ方向に延びる脚部を有し、
前記脚部は、前記電池スタックの端面と前記凹部の間の隙間に挿入される、
請求項８または９に記載の電池スタックの取り外し方法。

 The outer peripheral wall has a recess extending in the depth direction of the case,
The second assembly member has a leg portion extending in the depth direction of the case,
The leg portion is inserted into a gap between an end surface of the battery stack and the recess.
The method for removing a battery stack according to claim 8 or 9.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014107241A (en) 2012-11-29 2014-06-09 Mitsubishi Motors Corp On-vehicle battery pack
JP2017033751A (en) 2015-07-31 2017-02-09 三菱自動車工業株式会社 Battery pack and battery module replacement method
CN210389069U (en) 2019-09-04 2020-04-24 北京车和家信息技术有限公司 Battery module disassembling tool
JP2021051876A (en) 2019-09-24 2021-04-01 本田技研工業株式会社 Battery pack

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102349342B1 (en) * 2017-12-15 2022-01-07 주식회사 엘지에너지솔루션 Disassembling tool and battery module using the same
JP7076358B2 (en) * 2018-11-09 2022-05-27 本田技研工業株式会社 Fuel cell stack and its assembly method
CN211332945U (en) * 2020-01-06 2020-08-25 李�昊 Quick disassembling frame for CMOS battery
CN211858780U (en) * 2020-05-21 2020-11-03 华速(天津)科技有限公司 Battery module structure convenient to dismantle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014107241A (en) 2012-11-29 2014-06-09 Mitsubishi Motors Corp On-vehicle battery pack
JP2017033751A (en) 2015-07-31 2017-02-09 三菱自動車工業株式会社 Battery pack and battery module replacement method
CN210389069U (en) 2019-09-04 2020-04-24 北京车和家信息技术有限公司 Battery module disassembling tool
JP2021051876A (en) 2019-09-24 2021-04-01 本田技研工業株式会社 Battery pack

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