JP2018101588A - Manufacturing method for battery module - Google Patents

Manufacturing method for battery module Download PDF

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JP2018101588A
JP2018101588A JP2016248335A JP2016248335A JP2018101588A JP 2018101588 A JP2018101588 A JP 2018101588A JP 2016248335 A JP2016248335 A JP 2016248335A JP 2016248335 A JP2016248335 A JP 2016248335A JP 2018101588 A JP2018101588 A JP 2018101588A
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laminate
interposition
battery
battery module
stacking direction
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孝典 兎澤
Takanori Tozawa
孝典 兎澤
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Toyota Motor Corp
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    • 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

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Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method for a battery module in which a binding member can be inserted easily into a penetration part of each intervening member, out of a laminate consisting of a square battery, intervening members, and the like.SOLUTION: A manufacturing method for a battery module 1 includes a laminate preparation step of preparing a laminate 5 having a posture such that a lamination direction DH matches a vertical direction JH, an insertion step of sequentially inserting a binding members 60 from a top to a bottom into respective penetration parts 31 of stacked intervening members 20 after the laminate preparation step, and a binding step of compressing the laminate 5 in the vertical direction JH after the insertion step, and binding opposite ends 61 of the binding members 60 to end plates 40, respectively, such that tension in the lamination direction DH is applied to the binding members 60 by elongation of the laminate 5 when compressive force is released.SELECTED DRAWING: Figure 13

Description

本発明は、複数の角型電池と複数の介在部材とを交互に積層し、これらの積層方向の両側にエンドプレートをそれぞれ配置して、エンドプレート同士の間を拘束部材を架け渡して拘束した電池モジュールの製造方法に関する。   In the present invention, a plurality of prismatic batteries and a plurality of interposition members are alternately stacked, end plates are respectively arranged on both sides in the stacking direction, and a restraint member is bridged between the end plates and restrained. The present invention relates to a method for manufacturing a battery module.

複数の角型電池を備える電池モジュールとして、複数の角型電池と複数の介在部材とを交互に積層し、これらの積層方向の両側にエンドプレートをそれぞれ配置して、エンドプレート同士の間を拘束部材を架け渡して拘束した形態の電池モジュールが知られている。例えば、特許文献１に、このような電池モジュールが開示されている（特許文献１の図１〜図３等を参照）。   As a battery module including a plurality of prismatic batteries, a plurality of prismatic batteries and a plurality of interposition members are alternately stacked, and end plates are arranged on both sides in the stacking direction to constrain between the end plates. 2. Description of the Related Art A battery module having a configuration in which members are suspended and restrained is known. For example, Patent Document 1 discloses such a battery module (see FIGS. 1 to 3 and the like of Patent Document 1).

特開２０１３−０９３２３４号公報JP 2013-093234 A

上述のような電池モジュールにおいて、本発明者は、介在部材を、積層方向に貫通する貫通部を有する形態とし、拘束部材が積層体を構成するすべての介在部材の貫通部をそれぞれ貫通した形態の電池モジュールを考案した。
そして、以下の手法により電池モジュールを製造することを考えた。即ち、平坦な作業台の上に角型電池、介在部材及びエンドプレートをそれぞれ立てた状態で、これらを水平方向に積層して、エンドプレート同士の間に角型電池及び介在部材を交互に配置する。 In the battery module as described above, the present inventor has a configuration in which the interposition member has a through portion that penetrates in the stacking direction, and the restraining member has a configuration in which the through portions of all the interposition members constituting the laminate are respectively penetrated. A battery module was devised.
And it considered manufacturing a battery module with the following methods. In other words, with the prismatic battery, the interposition member and the end plate standing on the flat work table, they are stacked in the horizontal direction, and the square battery and the interposition member are alternately arranged between the end plates. To do.

その後、拘束部材を積層方向（水平方向）に移動させて、拘束部材を、この積層体を構成するすべての介在部材の貫通部にそれぞれ挿入する。このように拘束部材を積層体の各貫通部に挿入することで、その後に積層体を構成する各部材（角型電池、介在部材及びエンドプレート）がバラバラになることを防止できる。
その後、積層体を積層方向（水平方向）に押圧（圧縮）した状態で、拘束部材の両端部をエンドプレートにそれぞれ結合して、電池モジュールを形成する。 Thereafter, the restraining member is moved in the laminating direction (horizontal direction), and the restraining member is inserted into the penetrating portions of all the interposing members constituting the laminate. Thus, by inserting the restraining member into each through portion of the laminated body, it is possible to prevent each member (square battery, interposed member, and end plate) constituting the laminated body from being separated thereafter.
Thereafter, in a state where the laminate is pressed (compressed) in the lamination direction (horizontal direction), both end portions of the restraining member are respectively coupled to the end plates to form a battery module.

しかしながら、上述のように、拘束部材を水平方向に移動させて積層体の各貫通部に挿入しようとすると、挿入性が悪く、拘束部材の先端部が介在部材のうち貫通部の周囲の部分に当たって進められない（拘束部材の先端部が引っ掛かって進められない）など、拘束部材を各貫通部に挿入するのが難しい場合がある。   However, as described above, when the restraint member is moved in the horizontal direction and inserted into each through portion of the laminate, the insertability is poor, and the distal end portion of the restraint member hits the portion around the through portion of the interposition member. In some cases, it is difficult to insert the restraining member into each penetrating portion, for example, it cannot be advanced (the tip of the restraining member is caught and cannot be advanced).

本発明は、かかる現状に鑑みてなされたものであって、複数の角型電池と複数の介在部材とを交互に積層し、両側からエンドプレートで挟んだ積層体のうち、各々の介在部材の貫通部に、拘束部材を容易に挿入できる電池モジュールの製造方法を提供することを目的とする。   The present invention has been made in view of such a situation, and a plurality of prismatic batteries and a plurality of interposition members are alternately laminated, and each interposition member of the laminate sandwiched by end plates from both sides is provided. It aims at providing the manufacturing method of the battery module which can insert a restraint member in a penetration part easily.

上記課題を解決するための本発明の一態様は、複数の角型電池、及び、隣り合う上記角型電池同士の間に介在する複数の介在部材が交互に積層され、これらの積層方向の両側にエンドプレートがそれぞれ配置された積層体と、上記積層方向に延びた形態を有し、自身の両端部が上記エンドプレートにそれぞれ結合し、上記積層体を上記積層方向に拘束する拘束部材と、を備え、上記複数の介在部材は、それぞれ、上記積層方向に上記拘束部材が貫通する貫通部を有し、上記拘束部材は、上記積層体を構成するすべての上記介在部材の上記貫通部をそれぞれ貫通してなる電池モジュールの製造方法であって、上記積層方向が鉛直方向に一致する姿勢とした上記積層体を準備する積層体準備工程と、上記積層体準備工程の後、積み重なっている上記介在部材の各々の上記貫通部に、上から順に上記拘束部材を挿入する挿入工程と、上記挿入工程の後、上記積層体を鉛直方向に圧縮すると共に、圧縮力を開放したときの上記積層体の伸長によって上記拘束部材に上記積層方向の張力が掛かるように、上記拘束部材の上記両端部を上記エンドプレートにそれぞれ結合する結合工程と、を備える電池モジュールの製造方法である。   In one embodiment of the present invention for solving the above-described problem, a plurality of prismatic batteries and a plurality of interposition members interposed between the adjacent prismatic batteries are alternately stacked, and both sides in the stacking direction thereof. And a constraining member that constrains the laminated body in the laminating direction, each of which has a form extending in the laminating direction and having both ends thereof coupled to the end plate, Each of the plurality of interposition members has a penetrating portion through which the constraining member penetrates in the stacking direction, and the constraining member includes the penetrating portions of all the interposition members constituting the laminated body, respectively. A battery module manufacturing method that penetrates, wherein the stacking direction is arranged so that the stacking direction is aligned with the vertical direction. An insertion step of inserting the constraining member into each through portion of the interposition member in order from the top, and after the insertion step, the laminate is compressed in the vertical direction and the compression force is released. And a joining step for joining the both end portions of the restraining member to the end plate so that tension in the stacking direction is applied to the restraining member by stretching of the restraint member.

上述の電池モジュールの製造方法では、積層体準備工程において、積層方向が鉛直方向に一致する姿勢とした積層体を準備し、挿入工程において、積み重なっている介在部材の各々の貫通部に、上から順に拘束部材を挿入する。このようにすることで、挿入時に拘束部材の先端部が引っ掛かることを抑制できるので、拘束部材を積層体の各貫通部に容易に挿入できる。   In the battery module manufacturing method described above, in the layered body preparation step, a layered body in which the stacking direction coincides with the vertical direction is prepared. The constraining members are inserted in order. By doing in this way, since it can suppress that the front-end | tip part of a restraint member is caught at the time of insertion, a restraint member can be easily inserted in each penetration part of a laminated body.

なお、介在部材の「貫通部」としては、積層方向に貫通する貫通孔の周囲全体が貫通部で囲まれた形態の貫通部のほか、貫通孔の周囲の一部が外部に連通した形態の貫通部（例えば、積層方向に直交する断面がＣ字状をなす貫通部）などが挙げられる。
「拘束部材」としては、例えば、固い棒状や板状の拘束部材のほか、柔らかいヒモ状の拘束部材、スチールワイヤ、ピアノ線等の金属線材からなる拘束部材などが挙げられる。 As the “penetrating portion” of the interposition member, in addition to the penetrating portion in which the entire periphery of the through hole penetrating in the stacking direction is surrounded by the penetrating portion, a part of the periphery of the through hole is in communication with the outside. A penetration part (for example, a penetration part in which a cross section perpendicular to the stacking direction forms a C shape) can be used.
Examples of the “restraint member” include a hard bar-like or plate-like restraint member, a soft string-like restraint member, a restraint member made of a metal wire such as a steel wire and a piano wire, and the like.

更に、上記の電池モジュールの製造方法であって、前記介在部材は、前記積層方向に直交する直交方向への前記角型電池の移動を制限する移動制限部を有し、前記積層体準備工程は、上記介在部材と上記角型電池とを鉛直方向に交互に重ね、上記移動制限部で上記角型電池の上記直交方向への移動を制限した状態の前記積層体を準備する工程である電池モジュールの製造方法とするのが好ましい。   Furthermore, in the method for manufacturing the battery module, the interposition member includes a movement restriction unit that restricts movement of the rectangular battery in an orthogonal direction orthogonal to the stacking direction, and the stacked body preparation step includes The battery module is a step of preparing the laminate in a state where the interposition member and the square battery are alternately stacked in the vertical direction and the movement restriction unit restricts the movement of the square battery in the orthogonal direction. It is preferable to use this manufacturing method.

上述の電池モジュールの製造方法では、積層体準備工程において、介在部材と角型電池とを鉛直方向に交互に重ね、移動制限部で角型電池の直交方向への移動を制限した状態の積層体を準備する。これにより、介在部材及び角型電池の積層と共に、角型電池の直交方向への移動を制限した状態の積層体を準備できる。   In the battery module manufacturing method described above, in the stacked body preparation step, the interposition members and the rectangular batteries are alternately stacked in the vertical direction, and the stacked body in a state in which the movement restriction unit restricts the movement of the rectangular batteries in the orthogonal direction. Prepare. Thereby, the laminated body of the state which restrict | limited the movement to the orthogonal direction of a square battery with the lamination | stacking of an interposition member and a square battery can be prepared.

実施形態に係る電池モジュールの上面図である。It is a top view of the battery module which concerns on embodiment. 実施形態に係る電池モジュールの側面図である。It is a side view of the battery module which concerns on embodiment. 実施形態に係る電池モジュールの図１におけるＡ−Ａ断面図である。It is AA sectional drawing in FIG. 1 of the battery module which concerns on embodiment. 実施形態に係る介在部材の正面図である。It is a front view of the intervention member concerning an embodiment. 実施形態に係る介在部材の背面図である。It is a rear view of the intervention member concerning an embodiment. 実施形態に係る介在部材の上面図である。It is a top view of the interposition member concerning an embodiment. 実施形態に係る介在部材の底面図である。It is a bottom view of the interposition member concerning an embodiment. 実施形態に係る介在部材の側面図である。It is a side view of the interposition member concerning an embodiment. 実施形態に係り、積層体準備工程において、角型電池、介在部材及びエンドプレートを鉛直方向に積層する様子を、縦方向から見た説明図である。It is explanatory drawing which looked at a mode that a square battery, an interposed member, and an end plate were laminated | stacked on a perpendicular direction in the laminated body preparation process from the vertical direction according to embodiment. 実施形態に係り、積層体準備工程において、角型電池、介在部材及びエンドプレートを鉛直方向に積層する様子を、横方向から見た説明図である。It is explanatory drawing which looked at a mode that a square battery, an interposition member, and an end plate were laminated | stacked on a perpendicular direction in the laminated body preparation process from the horizontal direction according to embodiment. 実施形態に係り、積層体準備工程において、角型電池、介在部材及びエンドプレートを鉛直方向に積層する様子を、断面で見た説明図である。It is explanatory drawing which looked at a mode that a square battery, an interposition member, and an end plate were laminated | stacked on a perpendicular direction in a laminated body preparation process according to embodiment. 実施形態に係り、積層体準備工程において、角型電池、介在部材及びエンドプレートからなる積層体を形成した様子を示す説明図である。It is explanatory drawing which shows a mode that the laminated body which consists of a square battery, an interposition member, and an end plate was formed in the laminated body preparation process according to the embodiment. 実施形態に係り、挿入工程において、積み重なっている介在部材の各々の貫通部に、上から順に拘束部材を挿入する様子を示す説明図である。It is explanatory drawing which shows a mode that a restraint member is inserted in order from the top to each penetration part of the interposition member currently piled up in an insertion process in connection with embodiment.

以下、本発明の実施形態を、図面を参照しつつ説明する。図１〜図３に、本実施形態に係る電池モジュール１の上面図、側面図及び断面図を示す。また、図４〜図８に、電池モジュール１を構成する介在部材２０の正面図、背面図、上面図、底面図及び側面図を示す。なお、以下では、電池モジュール１の縦方向ＢＨ、横方向ＣＨ、積層方向ＤＨを、図１〜図３に示す方向と定めると共に、介在部材２０の部材縦方向ＥＨ、部材横方向ＦＨ、部材厚み方向ＧＨを、図４〜図８に示す方向と定めて説明する。   Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a top view, a side view, and a cross-sectional view of the battery module 1 according to the present embodiment. 4 to 8 are a front view, a rear view, a top view, a bottom view, and a side view of the interposition member 20 constituting the battery module 1. In the following description, the vertical direction BH, the horizontal direction CH, and the stacking direction DH of the battery module 1 are determined as the directions shown in FIGS. 1 to 3, and the member vertical direction EH, the member horizontal direction FH, and the member thickness of the interposition member 20. The direction GH is defined as the direction shown in FIGS.

この電池モジュール１は、ハイブリッドカーやプラグインハイブリッドカー、電気自動車などの車両に搭載される車載用の電池モジュールである。電池モジュール１は、複数（本実施形態では２０個）の角型電池１０と複数（本実施形態では１９個）の介在部材２０とが交互に積層され、積層方向ＤＨの両側にエンドプレート４０がそれぞれ配置されている。これらからなる積層体５は、エンドプレート４０同士の間を架け渡した複数（本実施形態では４本）拘束部材６０によって、積層方向ＤＨに押圧した状態で拘束されている。   The battery module 1 is an in-vehicle battery module mounted on a vehicle such as a hybrid car, a plug-in hybrid car, or an electric vehicle. In the battery module 1, a plurality (20 in this embodiment) of prismatic batteries 10 and a plurality (19 in this embodiment) of interposition members 20 are alternately stacked, and end plates 40 are provided on both sides in the stacking direction DH. Each is arranged. The laminated body 5 composed of these is constrained in a state of being pressed in the laminating direction DH by a plurality of (four in this embodiment) constraining members 60 spanning between the end plates 40.

このうち角型電池１０は、直方体状で密閉型のリチウムイオン二次電池である。この角型電池１０は、直方体箱状で金属（本実施形態ではアルミニウム）からなる電池ケース１１の内部に、帯状の正極板と帯状の負極板とを一対の帯状のセパレータを介して互いに重ねて扁平状に捲回した電極体（不図示）が電解液（不図示）と共に収容されている。また、電池ケース１１には、アルミニウムからなる正極端子部材１３、及び、銅からなる負極端子部材１５が、それぞれ電池ケース１１と絶縁された状態で固設されている。正極端子部材１３は、電池ケース１１内で電極体の正極板に接続し導通する一方、電池ケース１１を貫通して電池外部まで延びている。また、負極端子部材１５は、電池ケース１１内で電極体の負極板に接続し導通する一方、電池ケース１１を貫通して電池外部まで延びている。   Among these, the rectangular battery 10 is a rectangular parallelepiped and sealed lithium ion secondary battery. This rectangular battery 10 is a rectangular parallelepiped box-like battery case 11 made of metal (aluminum in the present embodiment), in which a belt-like positive electrode plate and a belt-like negative electrode plate are overlapped with each other via a pair of belt-like separators. An electrode body (not shown) wound in a flat shape is accommodated together with an electrolytic solution (not shown). In addition, a positive electrode terminal member 13 made of aluminum and a negative electrode terminal member 15 made of copper are fixed to the battery case 11 while being insulated from the battery case 11. The positive electrode terminal member 13 is connected to and electrically connected to the positive electrode plate of the electrode body in the battery case 11, and extends through the battery case 11 to the outside of the battery. Further, the negative electrode terminal member 15 is connected to and electrically connected to the negative electrode plate of the electrode body in the battery case 11, and extends through the battery case 11 to the outside of the battery.

介在部材２０は、電池モジュール１を構成した状態（図１〜図３参照）で、部材厚み方向ＧＨ（積層方向ＤＨ）の両側でそれぞれ角型電池１０を保持しつつ、これらの角型電池１０同士の間にそれぞれ介在する部材である。この介在部材２０（図４〜図８も参照）は、絶縁性の樹脂からなり、角型電池１０を保持する本体部２１と、後述する拘束部材６０が貫通する複数（本実施形態では４個）の貫通部３１とから一体的に形成されている。   The interposition member 20 is a state in which the battery module 1 is configured (see FIGS. 1 to 3), while holding the square batteries 10 on both sides in the member thickness direction GH (stacking direction DH), It is a member interposed between each other. The interposition member 20 (see also FIGS. 4 to 8) is made of an insulating resin, and a plurality of (four in the present embodiment) through which a main body 21 that holds the prismatic battery 10 and a restraining member 60 described later penetrate. ) Through part 31.

このうち本体部２１は、部材厚み方向ＧＨに直交する（部材縦方向ＥＨ及び部材横方向に拡がる）矩形板状で、隣り合う角型電池１０同士の間に挟まれる介在壁部２２のほか、この介在壁部２２に繋がり介在壁部２２にそれぞれ直交する上壁部２３、底壁部２４、第１側壁部２５及び第２側壁部２６を有する。介在部材２０の部材厚み方向ＧＨ（積層方向ＤＨ）の両側にそれぞれ配置される角型電池１０は、これら上壁部２３、底壁部２４、第１側壁部２５及び第２側壁部２６に囲まれて介在部材２０に保持される。   Among these, the main body portion 21 is a rectangular plate shape orthogonal to the member thickness direction GH (expanding in the member longitudinal direction EH and the member lateral direction), in addition to the interposition wall portion 22 sandwiched between the adjacent rectangular batteries 10, It has an upper wall part 23, a bottom wall part 24, a first side wall part 25, and a second side wall part 26 that are connected to the intermediate wall part 22 and are orthogonal to the intermediate wall part 22. The prismatic battery 10 disposed on both sides of the member thickness direction GH (stacking direction DH) of the interposition member 20 is surrounded by the upper wall portion 23, the bottom wall portion 24, the first side wall portion 25, and the second side wall portion 26. And is held by the interposition member 20.

また、本体部２１のうち、部材厚み方向ＧＨの一方側（図４中、紙面手前側、図６及び図７中、下方、図８中、右方）には、角型電池１０が、部材厚み方向ＧＨ（積層方向ＤＨ）に直交する直交方向、即ち、部材縦方向ＥＨ及び部材横方向ＦＨ（縦方向ＢＨ及び横方向ＣＨ）に移動するのを制限する複数（本実施形態では６個）の移動制限部２７が設けられている。   In addition, on one side of the main body portion 21 in the member thickness direction GH (in FIG. 4, the front side of the sheet, in FIGS. 6 and 7, downward, and in the right direction in FIG. 8), the rectangular battery 10 is connected to the member. A plurality (six in this embodiment) that restricts movement in the orthogonal direction orthogonal to the thickness direction GH (stacking direction DH), that is, the member longitudinal direction EH and the member transverse direction FH (vertical direction BH and transverse direction CH). The movement restriction unit 27 is provided.

このうち２つの移動制限部２７ａは、それぞれ、介在壁部２２と上壁部２３とが繋がる内隅部にＲ状に形成されている。角型電池１０を介在部材２０に部材厚み方向ＧＨ（積層方向ＤＨ）に押圧して介在部材２０に保持させたとき、この角型電池１０の押圧によって、これらの移動制限部２７ａは一部潰れて変形する。これにより、部材縦方向ＥＨ（縦方向ＢＨ）について角型電池１０が位置決めされると共に、部材縦方向ＥＨ（縦方向ＢＨ）への角型電池１０の移動が制限される。   Of these, the two movement restricting portions 27a are each formed in an R shape at an inner corner where the interposition wall portion 22 and the upper wall portion 23 are connected. When the prismatic battery 10 is pressed against the interposed member 20 in the member thickness direction GH (stacking direction DH) and held by the interposed member 20, the movement restricting portions 27a are partially crushed by the pressing of the rectangular battery 10. And deform. Thereby, the prismatic battery 10 is positioned in the member longitudinal direction EH (vertical direction BH), and the movement of the prismatic battery 10 in the member longitudinal direction EH (vertical direction BH) is restricted.

一方、２つの移動制限部２７ｂは、それぞれ、介在壁部２２と第１側壁部２５とが繋がる内隅部にＲ状に形成されている。また、残り２つの移動制限部２７ｃは、それぞれ、介在壁部２２と第２側壁部２６とが繋がる内隅部にＲ状に形成されている。角型電池１０を介在部材２０に部材厚み方向ＧＨ（積層方向ＤＨ）に押圧して介在部材２０に保持させたとき、この角型電池１０の押圧によって、これらの移動制限部２７ｂ，２７ｃはそれぞれ一部潰れて変形する。これにより、部材横方向ＦＨ（横方向ＣＨ）について角型電池１０が位置決めされると共に、部材横方向ＦＨ（横方向ＣＨ）への角型電池１０の移動が制限される。
このように、本実施形態では、介在部材２０の本体部２１に設けられた６つの移動制限部２７によって、部材縦方向ＥＨ（縦方向ＢＨ）及び部材横方向ＦＨ（横方向ＣＨ）への角型電池１０の移動が制限される。 On the other hand, the two movement restricting portions 27b are each formed in an R shape at an inner corner portion where the interposition wall portion 22 and the first side wall portion 25 are connected. The remaining two movement restricting portions 27c are each formed in an R shape at the inner corner where the interposition wall portion 22 and the second side wall portion 26 are connected. When the prismatic battery 10 is pressed against the interposition member 20 in the member thickness direction GH (stacking direction DH) and is held by the interposition member 20, the movement restricting portions 27b and 27c are respectively pressed by the pressing of the square battery 10. Part is crushed and deformed. Thus, the prismatic battery 10 is positioned in the member lateral direction FH (lateral direction CH), and the movement of the prismatic battery 10 in the member lateral direction FH (lateral direction CH) is restricted.
As described above, in this embodiment, the six movement restricting portions 27 provided in the main body portion 21 of the interposition member 20 cause the angle in the member longitudinal direction EH (vertical direction BH) and the member lateral direction FH (lateral direction CH). The movement of the battery 10 is limited.

次に、介在部材２０の貫通部３１について説明する。４つの貫通部３１のうち、２つの貫通部３１は、本体部２１の部材縦方向ＥＨの一方側（図４、図５及び図８中、上方）に間隔を空けて設けられている。また、残り２つの貫通部３１は、本体部２１の部材縦方向ＥＨの他方側（図４、図５及び図８中、下方）に間隔を空けて設けられている。各貫通部３１は、それぞれ、部材厚み方向ＧＨ（積層方向ＤＨ）に貫通する平面視矩形状の貫通孔３１ｈを有する矩形筒状である。各貫通部３１は、部材厚み方向ＧＨの一方側（図６及び図７中、上方、図８中、左方）に位置する被挿入部３１ａと、部材厚み方向ＧＨの他方側（図６及び図７中、下方、図８中、右方）に位置し、被挿入部３１ａよりも小さく形成された挿入部３１ｂとを有する。   Next, the penetration part 31 of the interposition member 20 will be described. Of the four penetrating portions 31, the two penetrating portions 31 are provided at intervals on one side of the main body portion 21 in the member longitudinal direction EH (upward in FIGS. 4, 5, and 8). The remaining two through portions 31 are provided on the other side of the main body portion 21 in the member longitudinal direction EH (downward in FIGS. 4, 5, and 8) with a space therebetween. Each through portion 31 has a rectangular cylindrical shape having a through hole 31h having a rectangular shape in plan view that penetrates in the member thickness direction GH (stacking direction DH). Each penetrating portion 31 includes an insertion portion 31a positioned on one side (upward in FIGS. 6 and 7, left in FIG. 8) of the member thickness direction GH and the other side (FIG. 6 and FIG. 6) of the member thickness direction GH. In FIG. 7, it is located below and to the right in FIG. 8, and has an insertion portion 31b formed smaller than the insertion portion 31a.

電池モジュール１を構成した状態（図１〜図３参照）で、各貫通部３１の被挿入部３１ａには、隣り合う介在部材２０の貫通部３１の挿入部３１ｂが挿入されている。これにより、隣り合う介在部材２０の貫通部３１同士が部材厚み方向ＧＨ（積層方向ＤＨ）に繋がって連通するため、積層体５を構成するすべての介在部材２０の貫通部３１が部材厚み方向ＧＨ（積層方向ＤＨ）に繋がって連通する。そして、これらの部材厚み方向ＧＨ（積層方向ＤＨ）に繋がった各貫通部３１内を、後述する拘束部材６０が貫通する。   In the state where the battery module 1 is configured (see FIGS. 1 to 3), the insertion part 31 b of the penetration part 31 of the adjacent interposed member 20 is inserted into the insertion part 31 a of each penetration part 31. Thereby, since the penetration part 31 of the adjacent interposition member 20 is connected and connected in the member thickness direction GH (stacking direction DH), the penetration part 31 of all the interposition members 20 which comprise the laminated body 5 is member thickness direction GH. It connects and communicates with (stacking direction DH). And the constraining member 60 mentioned later penetrates the inside of each penetration part 31 connected to these member thickness directions GH (stacking direction DH).

次に、エンドプレート４０について説明する（図１〜図３参照）。エンドプレート４０は、電池モジュール１を構成した状態で、角型電池１０を保持するエンド本体部４１と、後述する拘束部材６０が貫通する複数（本実施形態では４個）のエンド貫通部５１とを有する。エンド貫通部５１は、介在部材２０の貫通部３１とほぼ同様の形態を有する。また、エンドプレート４０は、エンド本体部４１から積層方向ＤＨに延びる概略矩形板状の２つのエンド結合部４５を有する。各エンド結合部４５には、縦方向ＢＨの両端部にそれぞれ孔部４５ｈ（図１３等を参照）が形成されている。この孔部４５ｈは後述する拘束部材６０の端部６１の孔部６１ｈと重なって、これらの孔部４５ｈ，６１ｈにリベット７０が挿通しており、これにより、エンド結合部４５に拘束部材６０の端部６１が結合している。   Next, the end plate 40 will be described (see FIGS. 1 to 3). The end plate 40 is in a state where the battery module 1 is configured, and an end main body portion 41 that holds the prismatic battery 10, and a plurality (four in this embodiment) of end through portions 51 through which a later-described restraining member 60 passes. Have The end penetration part 51 has substantially the same form as the penetration part 31 of the interposition member 20. Further, the end plate 40 has two end coupling portions 45 each having a substantially rectangular plate shape extending from the end main body portion 41 in the stacking direction DH. Each end coupling portion 45 has holes 45h (see FIG. 13 and the like) at both ends in the longitudinal direction BH. The hole 45 h overlaps a hole 61 h of an end 61 of the restraining member 60 described later, and a rivet 70 is inserted into the holes 45 h and 61 h, whereby the end connecting portion 45 is connected to the restraining member 60. The end 61 is joined.

拘束部材６０は、それぞれ、積層方向ＤＨに延びた形態の細長い矩形板状で金属（本実施形態ではアルミニウム）からなる（図１〜図３参照）。各拘束部材６０は、電池モジュール１を構成した状態で、複数の角型電池１０、複数の介在部材２０及び一対のエンドプレート４０からなる積層体５のうち、すべての介在部材２０の貫通部３１をそれぞれ貫通している。   Each of the restraining members 60 is an elongated rectangular plate having a shape extending in the stacking direction DH and is made of metal (in this embodiment, aluminum) (see FIGS. 1 to 3). Each constraining member 60 is a state in which the battery module 1 is configured, and the through-holes 31 of all the interposition members 20 among the stacked body 5 including the plurality of prismatic batteries 10, the plurality of interposition members 20 and the pair of end plates 40. Each through.

具体的には、各介在部材２０の貫通部３１は、前述のように、積層方向ＤＨに繋がって連通している。更に、これらの貫通部３１は、積層方向ＤＨの両側に位置するエンドプレート４０のエンド貫通部５１とも積層方向ＤＨに繋がって連通している。各拘束部材６０は、これらの積層方向ＤＨに繋がる貫通部３１及びエンド貫通部５１を積層方向ＤＨに貫通している。   Specifically, the penetration part 31 of each interposition member 20 is connected in the stacking direction DH as described above. Further, these through portions 31 are also connected to and communicated with the end through portions 51 of the end plate 40 located on both sides in the stacking direction DH in the stacking direction DH. Each constraining member 60 penetrates the penetration part 31 and the end penetration part 51 connected to these lamination directions DH in the lamination direction DH.

そして、各拘束部材６０は、積層方向ＤＨの張力が掛かった状態で、その両端部６１がエンドプレート４０のエンド結合部４５に結合している。具体的には、前述のように、拘束部材６０の両端部６１には、それぞれ孔部６１ｈ（図１３等を参照）が設けられている。この孔部６１ｈは、エンドプレート４０のエンド結合部４５に設けられた孔部４５ｈとそれぞれ重なって、これらの孔部６１ｈ，４５ｈにリベット７０が挿通しており、このリベット７０の加締め固定により、拘束部材６０の端部６１とエンドプレート４０のエンド結合部４５とが結合している。このようにして、積層体５は、積層方向ＤＨに押圧された状態で積層方向ＤＨに拘束されている。   Each restraining member 60 is coupled to the end coupling portion 45 of the end plate 40 at both ends 61 in a state where tension in the stacking direction DH is applied. Specifically, as described above, the holes 61h (see FIG. 13 and the like) are provided in the both ends 61 of the restraining member 60, respectively. The hole 61h overlaps with the hole 45h provided in the end coupling portion 45 of the end plate 40, and the rivet 70 is inserted into the holes 61h and 45h. The end portion 61 of the restraining member 60 and the end coupling portion 45 of the end plate 40 are coupled. Thus, the stacked body 5 is restrained in the stacking direction DH while being pressed in the stacking direction DH.

次いで、上記電池モジュール１の製造方法について説明する（図９〜図１３参照）。まず、角型電池１０、介在部材２０、エンドプレート４０及び拘束部材６０をそれぞれ用意する。
そして、積層体準備工程において、積層方向ＤＨが鉛直方向ＪＨに一致する姿勢とした積層体５を準備する（図９〜図１２参照）。具体的には、まず、平坦な治具ＴＡの上に、一方のエンドプレート４０を載置する。この治具ＴＡには、鉛直方向ＪＨに延びる２本の四角柱状の位置合わせガイドＴＢ，ＴＣが固設されている。一方の位置合わせガイドＴＢは、縦方向ＢＨについての位置合わせを行うためのガイドであり、他方の位置合わせガイドＴＣは、横方向ＣＨについての位置合わせを行うためのガイドである。また、これらの位置合わせガイドＴＢ，ＴＣにより、積層体５を形成する過程で積層体５が倒れるのを防止できる。エンドプレート４０を治具ＴＡ上に載置する際には、エンドプレート４０をこれらの位置合わせガイドＴＢ，ＴＣにそれぞれ当接させて、縦方向ＢＨ及び横方向ＣＨについてエンドプレート４０の位置合わせを行う。 Next, a method for manufacturing the battery module 1 will be described (see FIGS. 9 to 13). First, the square battery 10, the interposition member 20, the end plate 40, and the restraining member 60 are prepared.
And the laminated body 5 made into the attitude | position in which the lamination direction DH corresponds to the perpendicular direction JH is prepared in a laminated body preparation process (refer FIGS. 9-12). Specifically, first, one end plate 40 is placed on the flat jig TA. Two rectangular columnar alignment guides TB and TC extending in the vertical direction JH are fixed to the jig TA. One alignment guide TB is a guide for performing alignment in the vertical direction BH, and the other alignment guide TC is a guide for performing alignment in the lateral direction CH. Moreover, it can prevent that the laminated body 5 falls down in the process of forming the laminated body 5 by these alignment guide TB, TC. When the end plate 40 is placed on the jig TA, the end plate 40 is brought into contact with the alignment guides TB and TC to align the end plate 40 in the vertical direction BH and the horizontal direction CH. Do.

その後、このエンドプレート４０に上方から角型電池１０を重ねて、角型電池１０をエンドプレート４０のエンド本体部４１に保持させる。
その後、介在部材２０を位置合わせガイドＴＢ，ＴＣに当接させつつ、介在部材２０を先に積層した角型電池１０の上に重ねる。これにより、この角型電池１０は、下方でエンドプレート４０のエンド本体部４１に保持されると共に、上方でこの介在部材２０の本体部２１に保持される。また、エンドプレート４０の４つのエンド貫通部５１には、介在部材２０の４つの貫通部３１の挿入部３１ｂがそれぞれ挿入されて、エンド貫通部５１と貫通部３１とが鉛直方向ＪＨ（積層方向ＤＨ）に繋がる。 Thereafter, the prismatic battery 10 is stacked on the end plate 40 from above, and the prismatic battery 10 is held by the end main body 41 of the end plate 40.
Thereafter, the interposition member 20 is placed on the square battery 10 previously laminated while the interposition member 20 is brought into contact with the alignment guides TB and TC. As a result, the square battery 10 is held by the end main body 41 of the end plate 40 at the lower side and held by the main body 21 of the interposition member 20 at the upper side. Further, the insertion portions 31b of the four penetration portions 31 of the interposition member 20 are inserted into the four end penetration portions 51 of the end plate 40, respectively, and the end penetration portion 51 and the penetration portion 31 are in the vertical direction JH (stacking direction). DH).

次に、この介在部材２０の上方から２つ目の角型電池１０を重ねて、この角型電池１０を介在部材２０の本体部２１に保持させる。これにより、この角型電池１０と先に積層した角型電池１０との間に介在部材２０が介在する形態で、角型電池１０及び介在部材２０が積層される。
その後、２つ目の介在部材２０を位置合わせガイドＴＢ，ＴＣに当接させつつ、介在部材２０を先に積層した角型電池１０の上に重ねる。これにより、２つ目の角型電池１０は、下方で先に積層した介在部材２０の本体部２１に保持されると共に、上方でこの介在部材２０の本体部２１に保持される。また、先に積層した介在部材２０の４つの貫通部３１の被挿入部３１ａには、この介在部材２０の４つの貫通部３１の挿入部３１ｂがそれぞれ挿入されて、これらの介在部材２０の貫通部３１同士が鉛直方向ＪＨ（積層方向ＤＨ）に繋がる。 Next, the second prismatic battery 10 from above the interposition member 20 is stacked, and the square battery 10 is held by the main body 21 of the interposition member 20. Thereby, the square battery 10 and the interposition member 20 are laminated | stacked in the form which the interposition member 20 interposes between this square battery 10 and the square battery 10 laminated | stacked previously.
Thereafter, the second interposed member 20 is brought into contact with the alignment guides TB and TC, and the interposed member 20 is stacked on the square battery 10 previously stacked. As a result, the second prismatic battery 10 is held by the main body 21 of the interposed member 20 previously laminated at the lower side and held by the main body 21 of the interposed member 20 at the upper side. Further, the insertion portions 31b of the four through portions 31 of the interposition member 20 are respectively inserted into the inserted portions 31a of the four through portions 31 of the interposition member 20 that have been previously stacked. The portions 31 are connected in the vertical direction JH (stacking direction DH).

その後は、角型電池１０と介在部材２０とを交互に上方から重ねて、最後にエンドプレート４０を上方から重ねる。これにより、積層方向ＤＨが鉛直方向ＪＨに一致する積層体５が形成される（図１２参照）。
ここで、仮に角型電池１０、介在部材２０及びエンドプレート４０を水平方向に積層したとすると、積層時に角型電池１０や介在部材２０が脱落するおそれがある。水平方向に積層する場合には、積層方向ＤＨに荷重が掛かっていないからである。
これに対し、本実施形態では、上述のように、角型電池１０、介在部材２０及びエンドプレート４０を鉛直方向ＪＨに積層しているので、各角型電池１０及び各介在部材２０には、その上に積層された角型電池１０、介在部材２０及びエンドプレート４０の重さが掛かる。このため、積層時に角型電池１０や介在部材２０が脱落することを確実に防止できる。 Thereafter, the prismatic battery 10 and the interposition member 20 are alternately stacked from above, and finally the end plate 40 is stacked from above. Thereby, the laminated body 5 in which the lamination direction DH coincides with the vertical direction JH is formed (see FIG. 12).
Here, if the prismatic battery 10, the interposition member 20, and the end plate 40 are stacked in the horizontal direction, the prismatic battery 10 and the interposition member 20 may drop off during stacking. This is because when the layers are stacked in the horizontal direction, no load is applied in the stacking direction DH.
On the other hand, in the present embodiment, as described above, the prismatic battery 10, the interposed member 20, and the end plate 40 are stacked in the vertical direction JH. The square battery 10, the interposition member 20, and the end plate 40 stacked thereon are weighted. For this reason, it can prevent reliably that the square battery 10 and the interposition member 20 fall off at the time of lamination | stacking.

更に、鉛直方向ＪＨに積層することにより、積層した角型電池１０、介在部材２０及びエンドプレート４０の重さによって、角型電池１０が介在部材２０に鉛直方向ＪＨ（積層方向ＤＨ）に押さえ付けられる。これにより、各介在部材２０の移動制限部２７はそれぞれ一部潰れて変形し、積層方向ＤＨに直交する直交方向（縦方向ＢＨ及び横方向ＣＨ）について各角型電池１０が位置決めされると共に、縦方向ＢＨ及び横方向ＣＨへの各角型電池１０の移動が制限される。   Further, by stacking in the vertical direction JH, the square battery 10 is pressed against the interposition member 20 in the vertical direction JH (lamination direction DH) by the weight of the stacked square battery 10, the interposition member 20, and the end plate 40. It is done. Thereby, the movement restricting portions 27 of the respective interposing members 20 are partially crushed and deformed, and the respective rectangular batteries 10 are positioned in the orthogonal directions (vertical direction BH and horizontal direction CH) orthogonal to the stacking direction DH. The movement of each square battery 10 in the vertical direction BH and the horizontal direction CH is restricted.

次に、挿入工程において、積層体５のうち、積み重なっている介在部材２０の各々の貫通部３１に、上から順に各拘束部材６０を挿入する（図１３参照）。
ここで、仮に水平方向に積層された積層体５に対し、拘束部材６０を水平方向に移動させて、拘束部材６０を積層体５の各貫通部３１に挿入しようとすると、挿入性が悪く、拘束部材６０の端部６１が介在部材２０の貫通部３１の周囲の部分に当たって進められない（拘束部材６０の端部６１が引っ掛かって進められない）など、拘束部材６０を各貫通部３１に挿入するのが難しい場合がある。
これに対し、本実施形態では、拘束部材６０を下方に移動させる（落下させる）だけで、拘束部材６０を積層体５の各貫通部３１に容易に挿入できる。 Next, in the insertion step, the respective restraining members 60 are inserted in order from the top into the through portions 31 of the interposition members 20 stacked in the stacked body 5 (see FIG. 13).
Here, if the restraint member 60 is moved in the horizontal direction with respect to the laminate 5 laminated in the horizontal direction and the restraint member 60 is inserted into the respective through portions 31 of the laminate 5, the insertability is poor. The restraint member 60 is inserted into each through portion 31 such that the end portion 61 of the restraint member 60 does not advance by hitting a portion around the through portion 31 of the interposition member 20 (the end portion 61 of the restraint member 60 cannot be moved forward). It may be difficult to do.
On the other hand, in this embodiment, the restraint member 60 can be easily inserted into each penetration part 31 of the laminated body 5 only by moving the restraint member 60 downward (dropping).

なお、この挿入工程を終えた段階では、積層体５は未だ積層方向ＤＨに圧縮されていない。このため、この段階では、積層体５の積層方向ＤＨの寸法は、拘束部材６０の長手方向（積層方向ＤＨ）の寸法に対して長い状態（拘束部材６０の両端部６１をエンドプレート４０に結合できない状態）にある。   At the stage where this insertion process is completed, the stacked body 5 is not yet compressed in the stacking direction DH. Therefore, at this stage, the dimension of the laminate 5 in the stacking direction DH is longer than the dimension of the restraining member 60 in the longitudinal direction (stacking direction DH) (both ends 61 of the restraining member 60 are coupled to the end plate 40). It is in a state that cannot.

次に、結合工程において、積層体５を鉛直方向ＪＨ（積層方向ＤＨ）に圧縮すると共に、各拘束部材６０の両端部６１をエンドプレート４０にそれぞれ結合する。
具体的には、積層体５の上方に図示しない治具を載置し、下方の治具ＴＡとの間で、積層体５を挟んで、鉛直方向ＪＨ（積層方向ＤＨ）に押圧し、積層体５を鉛直方向ＪＨ（積層方向ＤＨ）に圧縮する。具体的には、積層体５の積層方向ＤＨの寸法が拘束部材６０の長手方向（積層方向ＤＨ）の寸法とほぼ同じ長さになって、エンドプレート４０のエンド結合部４５の孔部４５ｈと拘束部材６０の端部６１の孔部６１ｈとがそれぞれ重なるまで、積層体５を積層方向ＤＨに圧縮する。 Next, in the joining step, the stacked body 5 is compressed in the vertical direction JH (stacking direction DH), and both end portions 61 of each restraining member 60 are joined to the end plate 40.
Specifically, a jig (not shown) is placed above the laminated body 5, and the laminated body 5 is sandwiched between the lower jig TA and pressed in the vertical direction JH (laminating direction DH). The body 5 is compressed in the vertical direction JH (stacking direction DH). Specifically, the dimension of the laminate 5 in the stacking direction DH is substantially the same as the length of the restraining member 60 in the longitudinal direction (stacking direction DH), and the hole 45 h of the end coupling portion 45 of the end plate 40 The stacked body 5 is compressed in the stacking direction DH until the hole portions 61h of the end portions 61 of the restraining member 60 overlap each other.

その後、この圧縮状態で、重なった孔部４５ｈ，６１ｈにそれぞれリベット７０を挿通して加締める。これにより、各拘束部材６０の両端部６１が、エンドプレート４０のエンド結合部４５に結合する。
その後、圧縮力を開放すると、積層体５の伸長によって各拘束部材６０に積層方向ＤＨの張力が掛かる。かくして、電池モジュール１が完成する。 Thereafter, in this compressed state, the rivets 70 are respectively inserted into the overlapping holes 45h and 61h and crimped. As a result, both end portions 61 of each restraining member 60 are coupled to the end coupling portion 45 of the end plate 40.
Thereafter, when the compressive force is released, the tension in the stacking direction DH is applied to each restraining member 60 by the extension of the stacked body 5. Thus, the battery module 1 is completed.

以上で説明したように、電池モジュール１の製造方法では、積層体準備工程において、積層方向ＤＨが鉛直方向ＪＨに一致する姿勢とした積層体５を準備し、挿入工程において、積み重なっている介在部材２０の各々の貫通部３１に、上から順に拘束部材６０を挿入する。このようにすることで、挿入時に拘束部材６０の端部６１が引っ掛かることを抑制できるので、拘束部材６０を積層体５の各貫通部３１に容易に挿入できる。   As described above, in the method for manufacturing the battery module 1, the stacked body 5 is prepared in the stacked body preparation process so that the stacking direction DH coincides with the vertical direction JH, and the interposed members are stacked in the insertion process. The constraining member 60 is inserted into each through portion 31 of 20 in order from the top. By doing in this way, since it can suppress that the edge part 61 of the restraint member 60 is caught at the time of insertion, the restraint member 60 can be easily inserted in each penetration part 31 of the laminated body 5. FIG.

更に、本実施形態では、介在部材２０は、積層方向ＤＨに直交する直交方向（縦方向ＢＨ及び横方向ＣＨ）への角型電池１０の移動を制限する移動制限部２７を有する。そして、積層体準備工程において、介在部材２０と角型電池１０とを鉛直方向ＪＨに交互に重ね、移動制限部２７で角型電池１０の直交方向（縦方向ＢＨ及び横方向ＣＨ）への移動を制限した状態の積層体５を準備している。これにより、介在部材２０及び角型電池１０の積層と共に、角型電池１０の直交方向（縦方向ＢＨ及び横方向ＣＨ）への移動を制限した状態の積層体５を準備できる。   Furthermore, in the present embodiment, the interposition member 20 includes a movement restriction unit 27 that restricts the movement of the prismatic battery 10 in the orthogonal directions (vertical direction BH and horizontal direction CH) orthogonal to the stacking direction DH. Then, in the laminate preparation step, the interposition members 20 and the square batteries 10 are alternately stacked in the vertical direction JH, and the movement restriction unit 27 moves the square batteries 10 in the orthogonal direction (vertical direction BH and horizontal direction CH). Is prepared. Thereby, the laminated body 5 of the state which restrict | limited the movement to the orthogonal direction (vertical direction BH and horizontal direction CH) of the square battery 10 with the lamination | stacking of the interposition member 20 and the square battery 10 can be prepared.

以上において、本発明を実施形態に即して説明したが、本発明は上述の実施形態に限定されるものではなく、その要旨を逸脱しない範囲で、適宜変更して適用できることは言うまでもない。
例えば、実施形態では、介在部材２０の貫通部３１として、積層方向ＤＨに延びる貫通孔３１ｈを有する矩形筒状の貫通部３１を例示したが、これに限られない。例えば、貫通部３１を、積層方向ＤＨに直交する断面がＣ字状の貫通部とすることもできる。 In the above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be appropriately modified and applied without departing from the gist thereof.
For example, in the embodiment, the rectangular cylindrical through part 31 having the through hole 31h extending in the stacking direction DH is illustrated as the through part 31 of the interposition member 20, but the invention is not limited thereto. For example, the penetrating part 31 may be a penetrating part having a C-shaped cross section perpendicular to the stacking direction DH.

また、実施形態では、拘束部材６０として、細長い板状の拘束部材を用いたが、これに限られない。例えば、棒状の拘束部材や、スチールワイヤ、ピアノ線等の金属線材からなる拘束部材を用いることもできる。
また、実施形態では、拘束部材６０の端部６１及びエンドプレート４０のエンド結合部４５にそれぞれ設けた孔部６１ｈ，４５ｈに、リベット７０を挿通して加締め固定することにより、拘束部材６０の端部６１をエンドプレート４０に結合したが、これに限られない。例えば、拘束部材６０及びエンドプレート４０の孔部６１ｈ，４５ｈにボルトを挿通してナットで締結する形態としてもよい。あるいは、リベット７０やボルト等の部材を用いることなく、拘束部材６０の端部６１とエンドプレート４０のエンド結合部４５とを塑性変形させて、拘束部材６０の端部６１をエンドプレート４０に結合させる形態としてもよい。また、接着剤等を用いて、拘束部材６０の端部６１をエンドプレート４０に接合する形態とすることもできる。また、接着剤等を用いて、拘束部材６０の端部６１をエンドプレート４０に接合する形態とすることもできる。 In the embodiment, an elongated plate-like restraining member is used as the restraining member 60, but the invention is not limited thereto. For example, a rod-like restraining member or a restraining member made of a metal wire such as a steel wire or a piano wire can be used.
Further, in the embodiment, the rivet 70 is inserted into the holes 61 h and 45 h provided in the end portion 61 of the restraining member 60 and the end coupling portion 45 of the end plate 40 and fixed by caulking. Although the end portion 61 is coupled to the end plate 40, the present invention is not limited to this. For example, it is good also as a form which inserts a volt | bolt in the hole parts 61h and 45h of the restraint member 60 and the end plate 40, and fastens with a nut. Alternatively, the end portion 61 of the restraining member 60 and the end joint portion 45 of the end plate 40 are plastically deformed without using a member such as a rivet 70 or a bolt, and the end portion 61 of the restraining member 60 is joined to the end plate 40. It is good also as a form made to do. Moreover, it can also be set as the form which joins the edge part 61 of the restraint member 60 to the end plate 40 using an adhesive agent. Moreover, it can also be set as the form which joins the edge part 61 of the restraint member 60 to the end plate 40 using an adhesive agent.

１ 電池モジュール
５ 積層体
１０ 角型電池
２０ 介在部材
２７，２７ａ，２７ｂ，２７ｃ 移動制限部
３１ 貫通部
４０ エンドプレート
６０ 拘束部材
６１ 端部
６１ｈ 孔部
７０ リベット
ＢＨ 縦方向
ＣＨ 横方向
ＤＨ 積層方向
ＪＨ 鉛直方向 DESCRIPTION OF SYMBOLS 1 Battery module 5 Laminated body 10 Square battery 20 Interposition member 27, 27a, 27b, 27c Movement restriction part 31 Through part 40 End plate 60 Restriction member 61 End part 61h Hole part 70 Rivet BH Vertical direction CH Horizontal direction DH Stacking direction JH Vertical direction

Claims (1)

複数の角型電池、及び、隣り合う上記角型電池同士の間に介在する複数の介在部材が交互に積層され、これらの積層方向の両側にエンドプレートがそれぞれ配置された積層体と、
上記積層方向に延びた形態を有し、自身の両端部が上記エンドプレートにそれぞれ結合し、上記積層体を上記積層方向に拘束する拘束部材と、を備え、
上記複数の介在部材は、それぞれ、上記積層方向に上記拘束部材が貫通する貫通部を有し、
上記拘束部材は、上記積層体を構成するすべての上記介在部材の上記貫通部をそれぞれ貫通してなる
電池モジュールの製造方法であって、
上記積層方向が鉛直方向に一致する姿勢とした上記積層体を準備する積層体準備工程と、
上記積層体準備工程の後、積み重なっている上記介在部材の各々の上記貫通部に、上から順に上記拘束部材を挿入する挿入工程と、
上記挿入工程の後、上記積層体を鉛直方向に圧縮すると共に、圧縮力を開放したときの上記積層体の伸長によって上記拘束部材に上記積層方向の張力が掛かるように、上記拘束部材の上記両端部を上記エンドプレートにそれぞれ結合する結合工程と、を備える
電池モジュールの製造方法。 A plurality of prismatic batteries, and a plurality of interposed members interposed between the adjacent prismatic batteries, and a laminate in which end plates are respectively disposed on both sides in the stacking direction;
A constraining member having a form extending in the laminating direction, having both ends thereof coupled to the end plate, and restraining the laminated body in the laminating direction,
Each of the plurality of interposition members has a penetrating portion through which the restraining member penetrates in the stacking direction,
The restraining member is a method of manufacturing a battery module that penetrates through the through portions of all the interposed members constituting the laminate,
A laminate preparation step for preparing the laminate in a posture in which the stacking direction coincides with the vertical direction;
After the laminate preparation step, an insertion step of inserting the restraining member in order from above into each of the penetrating portions of the interposition members stacked,
After the insertion step, the both ends of the restraint member are compressed so that the laminate is compressed in the vertical direction and tension in the stacking direction is applied to the restraint member by extension of the laminate when the compression force is released. A battery module manufacturing method comprising: a coupling step of coupling a portion to the end plate.
JP2016248335A 2016-12-21 2016-12-21 Manufacturing method for battery module Pending JP2018101588A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110277522A (en) * 2019-06-25 2019-09-24 上海空间电源研究所 A kind of underwater units lightweight lithium ion battery mould group and manufacturing method
JP2023022625A (en) * 2021-08-03 2023-02-15 プライムプラネットエナジー＆ソリューションズ株式会社 battery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110277522A (en) * 2019-06-25 2019-09-24 上海空间电源研究所 A kind of underwater units lightweight lithium ion battery mould group and manufacturing method
CN110277522B (en) * 2019-06-25 2021-10-01 上海空间电源研究所 Light lithium ion battery module for underwater device and manufacturing method
JP2023022625A (en) * 2021-08-03 2023-02-15 プライムプラネットエナジー＆ソリューションズ株式会社 battery
JP7376539B2 (en) 2021-08-03 2023-11-08 プライムプラネットエナジー＆ソリューションズ株式会社 battery

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