JP6881270B2 - Battery module manufacturing method - Google Patents

Battery module manufacturing method Download PDF

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JP6881270B2
JP6881270B2 JP2017235122A JP2017235122A JP6881270B2 JP 6881270 B2 JP6881270 B2 JP 6881270B2 JP 2017235122 A JP2017235122 A JP 2017235122A JP 2017235122 A JP2017235122 A JP 2017235122A JP 6881270 B2 JP6881270 B2 JP 6881270B2
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battery
electrode terminal
terminal portion
bonding
tip
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JP2019102382A (en
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紀明 山本
紀明 山本
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Toyota Motor Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/484—Connecting portions
    • H01L2224/4847—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond
    • H01L2224/48472—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond the other connecting portion not on the bonding area also being a wedge bond, i.e. wedge-to-wedge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
    • H01L2224/491—Disposition
    • H01L2224/4912—Layout
    • H01L2224/49175—Parallel arrangements
    • 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

Description

本発明は、一の電池の電極端子部と、他の電池の電極端子部または導電部材とが電気的に接続された電池モジュールの製造方法に関する。 The present invention relates to a method for manufacturing a battery module in which an electrode terminal portion of one battery and an electrode terminal portion or a conductive member of another battery are electrically connected.

電池モジュールとして、電池の正または負の電極端子部と導電部材とをそれぞれ複数本のボンディングワイヤで電気的に接続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の請求項１、図１，図５等を参照）。複数本のボンディングワイヤにより電池の電極端子部と導電部材との接続した場合、電池モジュールの使用時などに、もし１本のボンディングワイヤが脱落したとしても、残りのボンディングワイヤによって電池の電極端子部と導電部材との接続を維持できるなどの利点がある。 As a battery module, a battery module in a form in which a positive or negative electrode terminal portion of a battery and a conductive member are electrically connected by a plurality of bonding wires is known. For example, Patent Document 1 discloses such a battery module (see claim 1, FIG. 1, FIG. 5, etc. of Patent Document 1). When the electrode terminal of the battery is connected to the conductive member by a plurality of bonding wires, even if one bonding wire falls off when using the battery module, the electrode terminal of the battery is connected by the remaining bonding wires. There is an advantage that the connection between the wire and the conductive member can be maintained.

特開２０１０−２８２８１１号公報Japanese Unexamined Patent Publication No. 2010-282811

しかしながら、複数本のボンディングワイヤにより電池の電極端子部と導電部材とを接続するには、ボンディングワイヤの電極端子部及び導電部材への接合を、ボンディングワイヤ毎に行う必要があり、工数が多くなり製造コストが高くなる。
なお、ボンディングワイヤに代えて、金属リボンを用いることも考えられる。しかし、この場合も、複数本の金属リボンにより電池の電極端子部と導電部材とを接続するには、金属リボンの電極端子部及び導電部材への接合を、金属リボン毎に行う必要があり、工数が多くなり製造コストが高くなる。 However, in order to connect the electrode terminal portion of the battery and the conductive member with a plurality of bonding wires, it is necessary to bond the bonding wire to the electrode terminal portion and the conductive member for each bonding wire, which increases the number of steps. The manufacturing cost is high.
It is also conceivable to use a metal ribbon instead of the bonding wire. However, also in this case, in order to connect the electrode terminal portion of the battery and the conductive member with a plurality of metal ribbons, it is necessary to join the metal ribbon to the electrode terminal portion and the conductive member for each metal ribbon. The number of steps increases and the manufacturing cost increases.

本発明は、かかる現状に鑑みてなされたものであって、低コストで、一の電池の電極端子部と、他の電池の電極端子部及び導電部材のいずれかとの間に、複数本の金属リボンを幅方向に並べて架け渡して、これらを接続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 the present situation, and at a low cost, a plurality of metals are provided between the electrode terminal portion of one battery and any of the electrode terminal portion and the conductive member of another battery. It is an object of the present invention to provide a method for manufacturing a battery module in which ribbons are arranged side by side in the width direction and can be connected to each other.

上記課題を解決するための本発明の一態様は、金属リボンを幅方向に複数本に分割した小幅リボンが、その分割された並びを保った状態で、一の電池の電極端子部と、他の電池の電極端子部及び導電部材のいずれかとの間にそれぞれ架け渡された電池モジュールの製造方法であって、接合チップで複数本の小幅リボン部の第１接合部を、それぞれ、上記一の電池の電極端子部、または、上記他の電池の電極端子部及び上記導電部材のうちの一方に押し付けつつ、上記接合チップに超音波振動を与えて、上記第１接合部を、それぞれ、上記一の電池の電極端子部、または、上記他の電池の電極端子部及び上記導電部材のうちの上記一方に超音波接合する第１接合工程と、繰り出された上記金属リボンを分割刃で先端側から幅方向に複数に分割し、分割された複数本の上記小幅リボン部を上記接合チップに供給しつつ、上記接合チップ及び上記分割刃を、上記一の電池の電極端子部から上記他の電池の電極端子部及び上記導電部材のうちの上記一方まで、または、上記他の電池の電極端子部及び上記導電部材のうちの上記一方から上記一の電池の電極端子部まで移動させて、複数本の上記小幅リボン部にそれぞれループを形成する移動分割工程と、上記接合チップで複数本の上記小幅リボン部の第２接合部を、それぞれ、上記他の電池の電極端子部及び上記導電部材のうちの上記一方、または、上記一の電池の電極端子部に押し付けつつ、上記接合チップに超音波振動を与えて、上記第２接合部を、それぞれ、上記他の電池の電極端子部及び上記導電部材のうちの上記一方、または、上記一の電池の電極端子部に超音波接合する第２接合工程と、を備える電池モジュールの製造方法である。 One aspect of the present invention for solving the above problems is that the small width ribbon obtained by dividing the metal ribbon into a plurality of pieces in the width direction maintains the divided arrangement, and the electrode terminal portion of one battery and the like. It is a method of manufacturing a battery module that is bridged between the electrode terminal portion and one of the conductive members of the battery, and the first joint portion of a plurality of narrow ribbon portions is formed by a joint tip, respectively. While pressing against the electrode terminal portion of the battery, the electrode terminal portion of the other battery, or one of the conductive members, ultrasonic vibration is applied to the bonding tip, and the first bonding portion is pressed against each of the above-mentioned one. The first joining step of ultrasonically joining the electrode terminal portion of the battery, or the electrode terminal portion of the other battery and one of the conductive members, and the metal ribbon drawn out from the tip side with a split blade. It is divided into a plurality of parts in the width direction, and while supplying the divided plurality of narrow ribbon portions to the joining chip, the joining tip and the dividing blade are transferred from the electrode terminal portion of the one battery to the other battery. A plurality of electrodes are moved to the electrode terminal portion and the above one of the conductive members, or from the electrode terminal portion of the other battery and the above one of the conductive members to the electrode terminal portion of the one battery. The moving division step of forming a loop in each of the narrow ribbon portions and the second joint portion of a plurality of the narrow ribbon portions of the joint tip are formed in the electrode terminal portion of the other battery and the conductive member, respectively. While pressing against the electrode terminal portion of one of the above batteries or the electrode terminal portion of the one battery, ultrasonic vibration is applied to the bonding tip to form the second joint portion of the electrode terminal portion of the other battery and the conductive member, respectively. This is a method for manufacturing a battery module, comprising: one of the above, or a second bonding step of ultrasonically bonding to the electrode terminal portion of the above one battery.

上述の電池モジュールの製造方法は、上述の第１接合工程、移動分割工程及び第２接合工程を備える。このため、複数本の金属リボンをそれぞれ電極端子部や導電部材に超音波接合する場合に比べて、低コストで、一の電池の電極端子部と、他の電池の電極端子部及び導電部材のいずれかとの間に、複数本の金属リボン（複数本の小幅リボン）を幅方向に並べて架け渡して、これらを接続できる。また、複数本の金属リボン（小幅リボン）を分割された並びを保った状態で架け渡すので、複数本の金属リボン（小幅リボン）を幅方向にコンパクトに配置できる。 The above-mentioned method for manufacturing a battery module includes the above-mentioned first joining step, moving division step, and second joining step. Therefore, as compared with the case where a plurality of metal ribbons are ultrasonically bonded to the electrode terminal portion and the conductive member, the electrode terminal portion of one battery and the electrode terminal portion and the conductive member of another battery are inexpensively bonded. A plurality of metal ribbons (a plurality of narrow ribbons) can be arranged and bridged in the width direction between them to connect them. Further, since a plurality of metal ribbons (narrow width ribbons) are bridged while maintaining a divided arrangement, a plurality of metal ribbons (narrow width ribbons) can be compactly arranged in the width direction.

また、他の態様は、一の電池の電極端子部と、他の電池の電極端子部及び導電部材のいずれかとを電気的に接続した電池モジュールであって、金属リボンを幅方向に複数本に分割した小幅リボンが、その分割された並びを保った状態で、上記一の電池の電極端子部と、上記他の電池の電極端子部及び上記導電部材のいずれかとの間にそれぞれ架け渡された電池モジュールである。 Another aspect is a battery module in which the electrode terminal portion of one battery is electrically connected to any of the electrode terminal portion and the conductive member of the other battery, and a plurality of metal ribbons are formed in the width direction. The divided narrow ribbons were bridged between the electrode terminal portion of the one battery, the electrode terminal portion of the other battery, and any of the conductive members in a state of maintaining the divided arrangement. It is a battery module.

上述の電池モジュールは、一の電池の電極端子部と他の電池の電極端子部または導電部材との間を、複数本の金属リボン（複数本の小幅リボン）を架け渡して接続している。このため、もし１本の金属リボン（小幅リボン）が脱落したとしても、残りの金属リボン（小幅リボン）によって一の電池の電極端子部と他の電池の電極端子部または導電部材との接続を維持できるので、接続信頼性が高い。しかも、複数本の金属リボン（小幅リボン）を分割された並びを保った状態で架け渡しているので、複数本の金属リボン（小幅リボン）を幅方向にコンパクトに配置できる。 In the above-mentioned battery module, a plurality of metal ribbons (a plurality of narrow ribbons) are bridged and connected between an electrode terminal portion of one battery and an electrode terminal portion or a conductive member of another battery. Therefore, even if one metal ribbon (narrow ribbon) falls off, the remaining metal ribbon (narrow ribbon) can be used to connect the electrode terminal portion of one battery to the electrode terminal portion or conductive member of another battery. Since it can be maintained, the connection reliability is high. Moreover, since a plurality of metal ribbons (narrow width ribbons) are bridged in a state of being divided and arranged, a plurality of metal ribbons (narrow width ribbons) can be compactly arranged in the width direction.

また、他の態様は、接合チップで金属リボンを対象物に押し付け超音波接合する接合部と、上記接合チップに向けて上記金属リボンを繰り出す繰出部と、を備えるボンディング装置であって、上記繰出部と上記接合チップとの間に位置し、上記繰出部から繰り出された上記金属リボンを先端側から幅方向に複数に分割する分割刃を備え、上記接合部は、繰り出された上記金属リボンのうち、上記分割刃により分割された複数本の小幅リボン部の接合部を、上記接合チップでそれぞれ上記対象物に押し付けつつ、上記接合チップに超音波振動を与えて、上記接合部をそれぞれ上記対象物に超音波接合するボンディング装置である。 Another aspect is a bonding apparatus including a bonding portion in which a metal ribbon is pressed against an object by a bonding tip to ultrasonically bond the metal ribbon, and a feeding portion for feeding the metal ribbon toward the bonding tip. It is located between the portion and the bonding tip, and is provided with a split blade that divides the metal ribbon fed out from the feeding portion into a plurality of pieces in the width direction from the tip side, and the bonding portion is made of the metal ribbon fed out. Among them, while pressing the joints of a plurality of narrow ribbon portions divided by the split blade against the object with the joint tip, ultrasonic vibration is applied to the joint tip to make each of the joints the target. A bonding device that ultrasonically bonds objects.

上述のボンディング装置は、上述の繰出部、分割刃及び接合部を備えるため、金属リボンを幅方向に分割した複数本の小幅リボン部を対象物に超音波接合できる。このため、複数本の金属リボンをそれぞれ対象物に超音波接合する場合に比べて、２つの対象物同士との間に複数本の金属リボン（複数本の小幅リボン）を幅方向に並べて架け渡して、これらの対象物同士を低コストで接続できる。 Since the above-mentioned bonding apparatus includes the above-mentioned feeding portion, dividing blade and joining portion, a plurality of narrow ribbon portions obtained by dividing a metal ribbon in the width direction can be ultrasonically bonded to an object. For this reason, compared to the case where a plurality of metal ribbons are ultrasonically bonded to each object, a plurality of metal ribbons (multiple narrow ribbons) are arranged and bridged between the two objects in the width direction. Therefore, these objects can be connected to each other at low cost.

実施形態に係る電池モジュールの部分上面図である。It is a partial top view of the battery module which concerns on embodiment. 実施形態に係り、図１におけるＡ−Ａ部分断面図である。FIG. 1 is a partial cross-sectional view taken along the line AA in FIG. 実施形態に係る電池モジュールの製造方法のフローチャートである。It is a flowchart of the manufacturing method of the battery module which concerns on embodiment. 実施形態に係り、ボンディング装置のうち要部の正面図である。FIG. 5 is a front view of a main part of the bonding apparatus according to the embodiment. 実施形態に係り、図４におけるＢ−Ｂ断面図である。FIG. 4 is a cross-sectional view taken along the line BB in FIG. 実施形態に係り、小幅リボン部の第１接合部を電池の負極端子部に超音波接合する様子を示す説明図である。It is explanatory drawing which shows the state of ultrasonically bonding the 1st bonding part of the narrow ribbon part to the negative electrode terminal part of a battery according to the embodiment. 実施形態に係り、小幅リボン部の第２接合部を負極導電部材に超音波接合する様子を示す説明図である。It is explanatory drawing which shows the state of ultrasonically bonding the 2nd bonding part of a narrow ribbon portion to a negative electrode conductive member according to the embodiment. 実施形態に係り、小幅リボン部を幅方向に切断する様子を示す説明図である。It is explanatory drawing which shows the state of cutting the narrow ribbon portion in the width direction which concerns on embodiment. 変形形態に係る電池モジュールの部分断面図である。It is a partial cross-sectional view of the battery module which concerns on a modified form. 変形形態に係る電池モジュールの製造方法のフローチャートである。It is a flowchart of the manufacturing method of the battery module which concerns on a modified form.

（実施形態）
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及び図２に、本実施形態に係る電池モジュール１の部分上面図及び部分断面図を示す。なお、図２及び後述する図６〜図８の電池１０では、電池内部の図示を省略し、電池ケース１１の断面のみを示してある。また、以下では、電池モジュール１の横方向ＣＨ、縦方向ＤＨ及び高さ方向ＥＨを、図１及び図２に示す方向と定めて説明する。 (Embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a partial top view and a partial cross-sectional view of the battery module 1 according to the present embodiment. In the battery 10 of FIGS. 2 and 6 to 8 described later, the inside of the battery is not shown, and only the cross section of the battery case 11 is shown. Further, in the following, the horizontal CH, the vertical DH, and the height EH of the battery module 1 will be described as the directions shown in FIGS. 1 and 2.

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、複数の円筒型の電池１０を並列に接続したものであり、これらの電池１０のほか、電池１０の負極端子部（電極端子部）１５同士を接続する負極導電部材３０、電池１０の正極端子部（電極端子部）１３同士を接続する正極導電部材２０、これらの電池１０を保持する電池保持部材（不図示）等から構成される。電池モジュール１において、各電池１０の負極端子部１５と負極導電部材３０とは、それぞれ、これらの間を架け渡した複数（本実施形態では２本）の小幅リボン（金属リボン）５１，５２により接続されている。同様に、各電池１０の正極端子部１３と正極導電部材２０とも、これらの間を架け渡した複数（本実施形態では２本）の小幅リボン（金属リボン）５１，５２により接続されている。 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. The battery module 1 is formed by connecting a plurality of cylindrical batteries 10 in parallel, and in addition to these batteries 10, a negative electrode conductive member 30 connecting the negative electrode terminals (electrode terminal portions) 15 of the batteries 10 to each other, and a battery. It is composed of a positive electrode conductive member 20 for connecting the positive electrode terminal portions (electrode terminal portions) 13 of 10 and a battery holding member (not shown) for holding these batteries 10. In the battery module 1, the negative electrode terminal portion 15 and the negative electrode conductive member 30 of each battery 10 are formed by a plurality of (two in this embodiment) narrow ribbons (metal ribbons) 51 and 52 that are bridged between them, respectively. It is connected. Similarly, the positive electrode terminal portion 13 of each battery 10 and the positive electrode conductive member 20 are also connected by a plurality of (two in this embodiment) narrow ribbons (metal ribbons) 51 and 52 that are bridged between them.

このうち電池１０は、円筒型（円柱状）で密閉型のリチウムイオン二次電池（具体的には１８６５０型のリチウムイオン二次電池）である。この電池１０は、円筒状で金属（本実施形態では炭素鋼）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円筒状に捲回した電極体（不図示）が非水電解液（不図示）と共に収容されてなる。
電池１０の軸線方向（図２中、上下方向）の一方端（図２中、下方）には、電池内部で電極体の正極板と導通する凸状の正極端子部１３（正極端子部１３については図９も参照）が設けられている。各々の正極端子部１３は、前述のように２本の小幅リボン５１，５２を介して正極導電部材２０に接続しており、これにより、正極端子部１３同士が正極導電部材２０を介して互いに導通している。 Of these, the battery 10 is a cylindrical (cylindrical) and sealed lithium ion secondary battery (specifically, a 18650 type lithium ion secondary battery). The battery 10 has a cylindrical shape in which a band-shaped positive electrode plate and a band-shaped negative electrode plate are stacked on each other via a pair of band-shaped separators inside a battery case 11 which is cylindrical and made of metal (carbon steel in this embodiment). An electrode body (not shown) wound around the surface is housed together with a non-aqueous electrolyte solution (not shown).
At one end (lower in FIG. 2) of the battery 10 in the axial direction (vertical direction in FIG. 2), there is a convex positive electrode terminal portion 13 (positive electrode terminal portion 13) that conducts with the positive electrode plate of the electrode body inside the battery. See also FIG. 9). As described above, each of the positive electrode terminal portions 13 is connected to the positive electrode conductive member 20 via the two narrow ribbons 51 and 52, whereby the positive electrode terminal portions 13 are connected to each other via the positive electrode conductive member 20. It is conducting.

一方、電池１０の軸線方向の他方端（図２中、上方）に位置する電池ケース１１の底面部は、電池内部で電極体の負極板と導通する円板状の負極端子部１５である。各々の負極端子部１５は、前述のように２本の小幅リボン５１，５２を介して負極導電部材３０に接続しており、これにより、負極端子部１５同士が負極導電部材３０を介して互いに導通している。また、電池モジュール１に含まれる各電池１０は、いずれも、負極端子部１５を高さ方向ＥＨの上方ＥＵに、正極端子部１３を高さ方向ＥＨの下方ＥＤに向け、互いに平行にかつ高さを揃えた状態で配置されている。 On the other hand, the bottom surface of the battery case 11 located at the other end (upper side in FIG. 2) of the battery 10 in the axial direction is a disk-shaped negative electrode terminal portion 15 that conducts with the negative electrode plate of the electrode body inside the battery. As described above, each of the negative electrode terminal portions 15 is connected to the negative electrode conductive member 30 via the two narrow ribbons 51 and 52, whereby the negative electrode terminal portions 15 are connected to each other via the negative electrode conductive member 30. It is conducting. Further, in each of the batteries 10 included in the battery module 1, the negative electrode terminal portion 15 is directed toward the upper EU in the height direction EH, and the positive electrode terminal portion 13 is directed toward the lower ED in the height direction EH, so that they are parallel to each other and high. They are arranged in the same state.

負極導電部材３０は、銅からなる矩形板状で、複数の円孔３０ｈが設けられている。負極導電部材３０は、電池モジュール１を構成する各電池１０の負極端子部１５よりも上方ＥＵに配置されており、負極導電部材３０を上方ＥＵから平面視したとき（図１参照）、各々の円孔３０ｈの径方向内側に電池１０の負極端子部１５がそれぞれ位置している。 The negative electrode conductive member 30 has a rectangular plate shape made of copper and is provided with a plurality of circular holes 30h. The negative electrode conductive member 30 is arranged above the negative electrode terminal portion 15 of each battery 10 constituting the battery module 1, and when the negative electrode conductive member 30 is viewed in a plan view from the upper EU (see FIG. 1), each of the negative electrode conductive members 30 is arranged. The negative electrode terminal portion 15 of the battery 10 is located inside the circular hole 30h in the radial direction.

次に、小幅リボン５１，５２について説明する。小幅リボン５１，５２は、後述する広幅金属リボン５０を幅方向ＢＨに複数本（本実施形態では２本）に分割して出来たものである。小幅リボン５１，５２は、後述するように広幅金属リボン５０が分割刃１３０（図４及び図５参照）で２本に分割されて小幅リボン部５１ｘ，５２ｘとなったときの並びをそのまま保った状態で、各電池１０の負極端子部１５と負極導電部材３０との間（または各電池１０の正極端子部１３と正極導電部材２０との間）にそれぞれ架け渡されている。小幅リボン５１，５２同士は、長手方向ＡＨの全体にわたって０．２ｍｍ程度の僅かな隙間ＫＧを保ったまま幅方向ＢＨに隣り合って配置されている。 Next, the narrow ribbons 51 and 52 will be described. The narrow ribbons 51 and 52 are formed by dividing the wide metal ribbon 50, which will be described later, into a plurality of ribbons (two in the present embodiment) in the width direction BH. As will be described later, the narrow ribbons 51 and 52 maintain the same arrangement when the wide metal ribbon 50 is divided into two by the split blade 130 (see FIGS. 4 and 5) to form the narrow ribbon portions 51x and 52x. In this state, they are bridged between the negative electrode terminal portion 15 of each battery 10 and the negative electrode conductive member 30 (or between the positive electrode terminal portion 13 of each battery 10 and the positive electrode conductive member 20). The narrow ribbons 51 and 52 are arranged adjacent to each other in the width direction BH while maintaining a slight gap KG of about 0.2 mm over the entire length direction AH.

各小幅リボン５１，５２の一方の端部（図１及び図２中、右方の端部）は、電池１０の負極端子部１５（または正極端子部１３）に、後述する超音波接合により接合している。小幅リボン５１，５２のうち、電池１０の負極端子部１５（または正極端子部１３）に接合した部位を、第１接合部５１ａ，５２ａとする。また、負極端子部１５（または正極端子部１３）のうち、小幅リボン５１，５２の第１接合部５１ａ，５２ａが接合した、負極端子部１５（または正極端子部１３）の中央近傍の部位を、第１被接合部１５ｃ，１５ｄ（または第１被接合部１３ｃ，１３ｄ）とする。 One end of each of the narrow ribbons 51 and 52 (the right end in FIGS. 1 and 2) is bonded to the negative electrode terminal portion 15 (or positive electrode terminal portion 13) of the battery 10 by ultrasonic bonding described later. doing. Of the narrow ribbons 51 and 52, the portions joined to the negative electrode terminal portion 15 (or the positive electrode terminal portion 13) of the battery 10 are referred to as the first joint portions 51a and 52a. Further, of the negative electrode terminal portion 15 (or the positive electrode terminal portion 13), a portion near the center of the negative electrode terminal portion 15 (or the positive electrode terminal portion 13) to which the first joint portions 51a and 52a of the narrow ribbons 51 and 52 are joined is formed. , 1st joined portion 15c, 15d (or 1st joined portion 13c, 13d).

一方、各小幅リボン５１，５２の他方の端部（図１及び図２中、左方の端部）は、負極導電部材３０（または正極導電部材２０）に超音波接合により接合している。小幅リボン５１，５２のうち、負極導電部材３０（または正極導電部材２０）に接合した部位を、第２接合部５１ｂ ５２ｂとする。また、負極導電部材３０（または正極導電部材２０）のうち、小幅リボン５１，５２の第２接合部５１ｂ，５２ｂが接合した、円孔３０ｈ（または円孔２０ｈ）の周囲の部位を、第２被接合部３０ｃ，３０ｄ（または第２被接合部２０ｃ，２０ｄ）とする。 On the other hand, the other end of each of the narrow ribbons 51 and 52 (the left end in FIGS. 1 and 2) is bonded to the negative electrode conductive member 30 (or the positive electrode conductive member 20) by ultrasonic bonding. Of the narrow ribbons 51 and 52, the portion joined to the negative electrode conductive member 30 (or the positive electrode conductive member 20) is referred to as a second joint portion 51b 52b. Further, of the negative electrode conductive member 30 (or the positive electrode conductive member 20), the portion around the circular hole 30h (or the circular hole 20h) to which the second joint portions 51b and 52b of the narrow ribbons 51 and 52 are joined is the second. The jointed portions 30c and 30d (or the second joined portions 20c and 20d).

この電池モジュール１では、各電池１０の負極端子部１５と負極導電部材３０との間を、それぞれ２本の小幅リボン５１，５２を架け渡して接続している。このため、仮に１本の小幅リボン（例えば小幅リボン５１）が脱落したとしても、残りの小幅リボン（例えば小幅リボン５２）によって負極端子部１５と負極導電部材３０との接続を維持できるので、接続信頼性が高い。しかも、２本の小幅リボン５１，５２を分割された並びを保った状態で架け渡しているので、２本の小幅リボン５１，５２を幅方向ＢＨにコンパクトに配置できる。同様に、各電池１０の正極端子部１３と正極導電部材２０との間を、それぞれ２本の小幅リボン５１，５２を架け渡して接続している。このため、正極端子部１３と正極導電部材２０との接続信頼性が高い。しかも、２本の小幅リボン５１，５２を分割された並びを保った状態で架け渡しているので、２本の小幅リボン５１，５２を幅方向ＢＨにコンパクトに配置できる。 In the battery module 1, two narrow ribbons 51 and 52 are bridged and connected between the negative electrode terminal portion 15 of each battery 10 and the negative electrode conductive member 30, respectively. Therefore, even if one narrow ribbon (for example, the narrow ribbon 51) falls off, the connection between the negative electrode terminal portion 15 and the negative electrode conductive member 30 can be maintained by the remaining narrow ribbon (for example, the narrow ribbon 52). Highly reliable. Moreover, since the two narrow ribbons 51 and 52 are bridged while maintaining the divided arrangement, the two narrow ribbons 51 and 52 can be compactly arranged in the width direction BH. Similarly, two narrow ribbons 51 and 52 are bridged and connected between the positive electrode terminal portion 13 of each battery 10 and the positive electrode conductive member 20, respectively. Therefore, the connection reliability between the positive electrode terminal portion 13 and the positive electrode conductive member 20 is high. Moreover, since the two narrow ribbons 51 and 52 are bridged while maintaining the divided arrangement, the two narrow ribbons 51 and 52 can be compactly arranged in the width direction BH.

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３〜図８参照）。まず、複数の電池１０及び電池保持部材（不図示）を用意し、「電池保持工程Ｓ１」において、各々の電池１０について、負極端子部１５を上方ＥＵに、正極端子部１３を下方ＥＤにそれぞれ向け、互いに平行にかつ高さを揃えた状態で、各電池１０を電池保持部材に保持させる。 Next, a method of manufacturing the battery module 1 will be described (see FIGS. 3 to 8). First, a plurality of batteries 10 and a battery holding member (not shown) are prepared, and in the "battery holding step S1", the negative electrode terminal portion 15 is in the upper EU and the positive electrode terminal portion 13 is in the lower ED for each battery 10. Each battery 10 is held by the battery holding member in a state of being oriented, parallel to each other, and having the same height.

次に、負極導電部材３０を用意し、「負極導電部材接続工程Ｓ２」を行って、各電池１０の負極端子部１５と負極導電部材３０とを、それぞれ２本の小幅リボン５１，５２を架け渡して接続する。この接続には、図４及び図５に示すボンディング装置１００を用いる。このボンディング装置１００は、繰出部１１０、搬送部１２０、分割刃１３０、接合部１４０、幅方向切断部１５０、移動機構１６０、制御部１７０等を備える。 Next, the negative electrode conductive member 30 is prepared, and the "negative electrode conductive member connecting step S2" is performed, and the negative electrode terminal portion 15 and the negative electrode conductive member 30 of each battery 10 are hung with two narrow ribbons 51 and 52, respectively. Pass and connect. The bonding apparatus 100 shown in FIGS. 4 and 5 is used for this connection. The bonding device 100 includes a feeding section 110, a transport section 120, a dividing blade 130, a joining section 140, a widthwise cutting section 150, a moving mechanism 160, a control section 170, and the like.

このうち繰出部１１０は、接合部１４０のうち接合チップ１４１のチップ先端部１４１ｓに向けて、広幅金属リボン５０を繰り出す部位である。この繰出部１１０には、巻出リール１１１に巻かれた広幅金属リボン５０が取り付けられており、この繰出部１１０から広幅金属リボン５０が長手方向ＡＨに繰り出されるように構成されている。 Of these, the feeding portion 110 is a portion of the joining portion 140 that feeds out the wide metal ribbon 50 toward the tip tip portion 141s of the joining tip 141. A wide metal ribbon 50 wound around the unwinding reel 111 is attached to the feeding portion 110, and the wide metal ribbon 50 is fed from the feeding portion 110 in the longitudinal direction AH.

搬送部１２０は、繰出部１１０から繰り出された広幅金属リボン５０及びこれを先端側ＡＳから分割した２本の小幅リボン部５１ｘ，５２ｘを、接合チップ１４１のチップ先端部１４１ｓまで搬送する部位である。この搬送部１２０は、繰出部１１０から繰り出された広幅金属リボン５０を搬送する搬送ローラ１２１と、この搬送ローラ１２１よりも下流に位置し、広幅金属リボン５０及び小幅リボン部５１ｘ，５２ｘを接合チップ１４１のチップ先端部１４１ｓまで案内するガイド部１２５とを有する。 The transport portion 120 is a portion that transports the wide metal ribbon 50 unwound from the feeding portion 110 and the two narrow ribbon portions 51x and 52x obtained by dividing the wide metal ribbon 50 from the tip side AS to the tip tip portion 141s of the bonding tip 141. .. The transport portion 120 is located downstream of the transport roller 121 that transports the wide metal ribbon 50 that has been fed from the feed portion 110, and the wide metal ribbon 50 and the narrow ribbon portions 51x and 52x. It has a guide portion 125 that guides the chip tip portion 141s of 141.

ガイド部１２５には、第１押さえローラ１２２及び第２押さえローラ１２３が取り付けられている。第１押さえローラ１２２は、後述する分割刃１３０の上流に位置し、分割前の広幅金属リボン５０がガイド部１２５から浮くのを防止すべく、広幅金属リボン５０をガイド部１２５に押さえ付けるローラである。一方、第２押さえローラ１２３は、分割刃１３０の下流に位置し、分割後の２本の小幅リボン部５１ｘ，５２ｘがガイド部１２５から浮くのを防止すべく、小幅リボン部５１ｘ，５２ｘをそれぞれガイド部１２５に押さえ付けるローラである。 A first pressing roller 122 and a second pressing roller 123 are attached to the guide portion 125. The first pressing roller 122 is located upstream of the dividing blade 130, which will be described later, and is a roller that presses the wide metal ribbon 50 against the guide portion 125 in order to prevent the wide metal ribbon 50 before division from floating from the guide portion 125. is there. On the other hand, the second pressing roller 123 is located downstream of the split blade 130, and the narrow ribbon portions 51x and 52x are separated from each other in order to prevent the two narrow ribbon portions 51x and 52x after the division from floating from the guide portion 125, respectively. It is a roller that presses against the guide portion 125.

ガイド部１２５のうち先端側（下方ＥＤ側）に位置するガイド先端側部１２５ｇは、２本の小幅リボン部５１ｘ，５２ｘが挿通可能なガイド挿通孔１２５ｈを有する筒状をなし、小幅リボン５１，５２が接合チップ１４１のチップ先端部１４１ｓに向けて案内されるように、先端側（下方ＥＤ側）ほどチップ先端部１４１ｓに向けて、図５中、右方に屈曲している。ガイド挿通孔１２５ｈは、先端側（下方ＥＤ側）で幅広となっている。即ち、ガイド挿通孔１２５ｈのうち、基端側部分の幅（ガイド幅Ｗ１）に対して、先端部の幅（ガイド幅Ｗ２）が大きくなっている。これにより、小幅リボン部５１ｘ，５２ｘがガイド先端側部１２５ｇから外部に引き出され易くなる。 The guide tip side portion 125g located on the tip side (lower ED side) of the guide portion 125 has a tubular shape having guide insertion holes 125h through which two narrow ribbon portions 51x and 52x can be inserted, and the narrow ribbon 51, The tip side (lower ED side) is bent to the right toward the tip tip portion 141s so that the 52 is guided toward the tip tip portion 141s of the joining tip 141. The guide insertion hole 125h is wide on the tip side (lower ED side). That is, in the guide insertion hole 125h, the width of the tip portion (guide width W2) is larger than the width of the base end side portion (guide width W1). As a result, the narrow ribbon portions 51x and 52x can be easily pulled out from the guide tip side portion 125g.

分割刃１３０は、繰出部１１０と接合チップ１４１のチップ先端部１４１ｓとの間に位置する。具体的には、上述の搬送部１２０のガイド部１２５のうち、第１押さえローラ１２２の下流で、第２押さえローラ１２３の上流の部位に取り付けられている。この分割刃１３０は、繰出部１１０から繰り出されて下方ＥＤに搬送される広幅金属リボン５０を、先端側ＡＳから幅方向ＢＨに２本に分割する。 The split blade 130 is located between the feeding portion 110 and the tip tip portion 141s of the joining tip 141. Specifically, it is attached to a portion of the guide portion 125 of the above-mentioned transport portion 120, downstream of the first pressing roller 122 and upstream of the second pressing roller 123. The split blade 130 divides the wide metal ribbon 50, which is fed out from the feeding portion 110 and conveyed to the lower ED, into two in the width direction BH from the tip side AS.

接合部１４０は、繰り出された広幅金属リボン５０のうち、分割刃１３０により分割された一対の小幅リボン部５１ｘ，５２ｘを、接合チップ１４１でそれぞれ対象物（後述する第１接合工程Ｓ２１においては電池１０の負極端子部１５、第２接合工程Ｓ２３においては負極導電部材３０）に押し付けつつ、接合チップ１４１に超音波振動を与えて、小幅リボン部５１ｘ，５２ｘをそれぞれ対象物（負極端子部１５または負極導電部材３０）に超音波接合する。 In the bonding portion 140, the pair of narrow ribbon portions 51x and 52x divided by the dividing blade 130 among the wide metal ribbons 50 drawn out are objected to by the bonding tip 141 (in the first bonding step S21 described later, a battery). While pressing the negative electrode terminal portion 15 of 10 and the negative electrode conductive member 30) in the second bonding step S23, ultrasonic vibration is applied to the bonding chip 141 to make the narrow ribbon portions 51x and 52x the objects (negative electrode terminal portion 15 or the negative electrode terminal portion 15 or It is ultrasonically bonded to the negative electrode conductive member 30).

具体的には、接合部１４０は、接合チップ１４１と、この接合チップ１４１に超音波振動を与える超音波振動子１４３と、接合チップ１４１及び超音波振動子１４３を上下に移動可能な第１上下移動機構１４５とを有する。
接合チップ１４１は、チップ先端部１４１ｓが先細りする棒状を有し、高さ方向ＥＨに平行に配置されている。超音波振動子１４３は、接合チップ１４１に直交する形態で、接合チップ１４１のチップ基端側部１４１ｋに取り付けられている。超音波振動子１４３から生じる超音波振動は、高さ方向ＥＨに直交する方向に振動するため、接合チップ１４１も高さ方向ＥＨに直交する方向に振動する。超音波振動子１４３は、後述する制御部１７０によって制御される。 Specifically, the joint portion 140 is a first vertical movement capable of moving the joint chip 141, the ultrasonic vibrator 143 that applies ultrasonic vibration to the joint chip 141, and the joint chip 141 and the ultrasonic vibrator 143 up and down. It has a moving mechanism 145.
The bonding tip 141 has a rod-like shape in which the tip tip portion 141s is tapered, and is arranged parallel to the EH in the height direction. The ultrasonic vibrator 143 is attached to the chip base end side portion 141k of the bonding chip 141 in a form orthogonal to the bonding chip 141. Since the ultrasonic vibration generated from the ultrasonic vibrator 143 vibrates in the direction orthogonal to the height direction EH, the bonding tip 141 also vibrates in the direction orthogonal to the height direction EH. The ultrasonic vibrator 143 is controlled by a control unit 170, which will be described later.

第１上下移動機構１４５は、モータ等を含み、制御部１７０によって、接合チップ１４１及び接合チップ１４１を上下に移動可能に構成されている。また、超音波接合の際には、この第１上下移動機構１４５が接合チップ１４１を下方ＥＤに押して、接合チップ１４１のチップ先端部１４１ｓが所定の押圧力で小幅リボン部５１ｘ，５２ｘを電池１０の負極端子部１５または負極導電部材３０に押圧する。 The first vertical movement mechanism 145 includes a motor and the like, and is configured so that the joint chip 141 and the joint chip 141 can be moved up and down by the control unit 170. Further, at the time of ultrasonic bonding, the first vertical movement mechanism 145 pushes the bonding tip 141 downward to the ED, and the tip tip portion 141s of the bonding tip 141 presses the narrow ribbon portions 51x and 52x with a predetermined pressing force to make the battery 10 Press against the negative electrode terminal portion 15 or the negative electrode conductive member 30 of the above.

幅方向切断部１５０は、一対の小幅リボン部５１ｘ，５２ｘを幅方向ＢＨに切断する切断刃１５１と、この切断刃１５１を上下に移動可能な第２上下移動機構１５３とを有する。切断刃１５１は、高さ方向ＥＨに延びる本体部１５１ａと、本体部１５１ａの先端に設けられた刃先部１５１ｂとを有する。この切断刃１５１は、刃先部１５１ｂが下方ＥＤを向く形態で、接合チップ１４１の隣に接合チップ１４１と略平行に配置されている。第２上下移動機構１５３は、モータ等を含み、制御部１７０によって、切断刃１５１を上下に移動可能に構成されている。第２上下移動機構１５３により切断刃１５１が下降すると、切断刃１５１の刃先部１５１ｂで小幅リボン部５１ｘ，５２ｘがそれぞれ幅方向ＢＨに切断される。 The width direction cutting portion 150 includes a cutting blade 151 that cuts a pair of narrow ribbon portions 51x and 52x in the width direction BH, and a second vertical movement mechanism 153 that can move the cutting blade 151 up and down. The cutting blade 151 has a main body portion 151a extending in the height direction EH and a cutting edge portion 151b provided at the tip of the main body portion 151a. The cutting blade 151 has a cutting edge portion 151b facing downward ED, and is arranged next to the joining tip 141 and substantially parallel to the joining tip 141. The second vertical movement mechanism 153 includes a motor and the like, and is configured so that the cutting blade 151 can be moved up and down by the control unit 170. When the cutting blade 151 is lowered by the second vertical movement mechanism 153, the narrow ribbon portions 51x and 52x are cut in the width direction BH by the cutting edge portion 151b of the cutting blade 151, respectively.

移動機構１６０は、繰出部１１０、搬送部１２０、分割刃１３０、接合部１４０及び幅方向切断部１５０を含む本体部１０５を、三次元的に（横方向ＣＨ、縦方向ＤＨ及び高さ方向ＥＨに）移動させる。この移動機構１６０は、モータ等を含み、制御部１７０によって制御される。
制御部１７０は、ボンディング装置１００の各部の制御を行う。具体的には、制御部１７０は、ボンディング装置１００全体の制御を行うための操作パネル（不図示）を有しており、接合部１４０の超音波振動子１４３、接合部１４０の第１上下移動機構１４５、幅方向切断部１５０の第２上下移動機構１５３、移動機構１６０などを制御する。 The moving mechanism 160 three-dimensionally (horizontally CH, longitudinal DH, and height EH) the main body 105 including the feeding portion 110, the transport portion 120, the dividing blade 130, the joint portion 140, and the width direction cutting portion 150. To) move. The moving mechanism 160 includes a motor and the like, and is controlled by a control unit 170.
The control unit 170 controls each unit of the bonding device 100. Specifically, the control unit 170 has an operation panel (not shown) for controlling the entire bonding device 100, and the ultrasonic vibrator 143 of the joint portion 140 and the first vertical movement of the joint portion 140. It controls the mechanism 145, the second vertical movement mechanism 153 of the widthwise cutting portion 150, the movement mechanism 160, and the like.

次に、このボンディング装置１００を用いて行う「負極導電部材接続工程Ｓ２」について説明する。この負極導電部材接続工程Ｓ２は、第１接合工程Ｓ２１、第１移動分割工程Ｓ２２、第２接合工程Ｓ２３、第２移動分割工程Ｓ２４、切断工程Ｓ２５及び移動工程Ｓ２６を有し、これらの工程を繰り返し行うことにより、すべての電池１０の負極端子部１５と負極導電部材３０との間をそれぞれ２本の小幅リボン５１，５２を架け渡して接続する。 Next, the “negative electrode conductive member connecting step S2” performed using the bonding device 100 will be described. The negative electrode conductive member connecting step S2 includes a first joining step S21, a first moving splitting step S22, a second joining step S23, a second moving splitting step S24, a cutting step S25, and a moving step S26. By repeating the process, two narrow ribbons 51 and 52 are bridged and connected between the negative electrode terminal portion 15 of all the batteries 10 and the negative electrode conductive member 30, respectively.

まず、上方ＥＵから見て、負極導電部材３０の各円孔３０ｈの径方向内側に各電池１０の負極端子部１５がそれぞれ位置するように、各電池１０の上方ＥＵに負極導電部材３０を配置する。
その後、負極導電部材接続工程Ｓ２のうち「第１接合工程Ｓ２１」において、移動機構１６０により、ボンディング装置１００の本体部１０５を、一の電池１０の負極端子部１５の上方まで移動させる。更に、接合部１４０の第１上下移動機構１４５により、接合チップ１４１及び超音波振動子１４３を下方ＥＤに移動させて、接合チップ１４１のチップ先端部１４１ｓで、２本に分割された小幅リボン部５１ｘ，５２ｘの先端部である第１接合部５１ａ，５２ａを、それぞれ電池１０の負極端子部１５の第１被接合部１５ｃ，１５ｄに押し付ける（図６参照）。そして、超音波振動子１４３から接合チップ１４１に超音波振動を与えて、２本の小幅リボン部５１ｘ，５２ｘの第１接合部５１ａ，５２ａをそれぞれ負極端子部１５の第１被接合部１５ｃ，１５ｄに超音波接合する。その後、第１上下移動機構１４５により、接合チップ１４１及び超音波振動子１４３を上方ＥＵに移動させる。 First, the negative electrode conductive member 30 is arranged in the upper EU of each battery 10 so that the negative electrode terminal portion 15 of each battery 10 is located inside each circular hole 30h of the negative electrode conductive member 30 in the radial direction when viewed from the upper EU. To do.
After that, in the "first bonding step S21" of the negative electrode conductive member connecting step S2, the main body 105 of the bonding device 100 is moved to above the negative electrode terminal 15 of one battery 10 by the moving mechanism 160. Further, the first vertical movement mechanism 145 of the joint portion 140 moves the joint tip 141 and the ultrasonic vibrator 143 downward to the ED, and the tip tip portion 141s of the joint tip 141 is divided into two narrow ribbon portions. The first joint portions 51a and 52a, which are the tips of the 51x and 52x, are pressed against the first joint portions 15c and 15d of the negative electrode terminal portion 15 of the battery 10, respectively (see FIG. 6). Then, ultrasonic vibration is applied from the ultrasonic vibrator 143 to the bonding tip 141, and the first bonding portions 51a and 52a of the two narrow ribbon portions 51x and 52x are formed by the first bonded portion 15c of the negative electrode terminal portion 15, respectively. Ultrasonic bonding to 15d. After that, the bonding tip 141 and the ultrasonic vibrator 143 are moved to the upper EU by the first vertical movement mechanism 145.

なお、一対の小幅リボン部５１ｘ，５２ｘは、次のようにして接合チップ１４１のチップ先端部１４１ｓに供給される。即ち、繰出部１１０から繰り出された広幅金属リボン５０は、搬送部１２０によって接合チップ１４１のチップ先端部１４１ｓに向けて搬送される。この搬送途中において、ガイド部１２５に取り付けられた分割刃１３０で、広幅金属リボン５０が先端側ＡＳから幅方向ＢＨに２本に分割され、一対の小幅リボン部５１ｘ，５２ｘが形成される。更に、これらの小幅リボン部５１ｘ，５２ｘは、ガイド部１２５によって接合チップ１４１のチップ先端部１４１ｓに案内される。 The pair of narrow ribbon portions 51x and 52x are supplied to the tip tip portions 141s of the bonding tip 141 as follows. That is, the wide metal ribbon 50 unwound from the feeding portion 110 is conveyed by the conveying portion 120 toward the tip tip portion 141s of the joining tip 141. During this transfer, the wide metal ribbon 50 is divided into two in the width direction BH from the tip side AS by the split blade 130 attached to the guide portion 125, and a pair of narrow ribbon portions 51x and 52x are formed. Further, these narrow ribbon portions 51x and 52x are guided by the guide portion 125 to the tip tip portion 141s of the joining tip 141.

次に、「第１移動分割工程Ｓ２２」において、繰り出された広幅金属リボン５０を分割刃１３０で先端側ＡＳから幅方向ＢＨに２本に分割し、分割された２本の小幅リボン部５１ｘ，５２ｘを接合チップ１４１のチップ先端部１４１ｓに供給する。これと共に、接合チップ１４１、分割刃１３０等を含む本体部１０５を、電池１０の負極端子部１５の第１被接合部１５ｃ，１５ｄから、負極導電部材３０のうち円孔３０ｈの周囲の第２被接合部３０ｃ，３０ｄまで移動させて、２本の小幅リボン部５１ｘ，５２ｘにそれぞれループを形成する（図７参照）。 Next, in the "first moving division step S22", the drawn wide metal ribbon 50 is divided into two by the dividing blade 130 in the width direction BH from the tip side AS, and the divided two narrow ribbon portions 51x, 52x is supplied to the tip tip portion 141s of the joining tip 141. At the same time, the main body 105 including the bonding tip 141, the split blade 130, and the like is moved from the first bonded portions 15c and 15d of the negative electrode terminal portion 15 of the battery 10 to the second portion around the circular hole 30h of the negative electrode conductive member 30. It is moved to the joined portions 30c and 30d to form loops on the two narrow ribbon portions 51x and 52x, respectively (see FIG. 7).

具体的には、移動機構１６０により、ボンディング装置１００の本体部１０５を、電池１０の負極端子部１５の第１被接合部１５ｃ，１５ｄから、負極導電部材３０の第２被接合部３０ｃ，３０ｄまで移動させる。その際、２本の小幅リボン部５１ｘ，５２ｘの先端部（第１接合部５１ａ，５２ａ）は、電池１０の負極端子部１５に接合されているため、本体部１０５の移動に伴って小幅リボン部５１ｘ，５２ｘが搬送部１２０のガイド先端側部１２５ｇから外部に引き出される。そこで、引き出された小幅リボン部５１ｘ，５２ｘにそれぞれループが形成されるように、移動機構１６０により本体部１０５を移動させる。 Specifically, the moving mechanism 160 causes the main body 105 of the bonding device 100 to be moved from the first bonded portions 15c and 15d of the negative electrode terminal portion 15 of the battery 10 to the second bonded portions 30c and 30d of the negative electrode conductive member 30. Move to. At that time, since the tip portions (first joint portions 51a, 52a) of the two narrow ribbon portions 51x and 52x are joined to the negative electrode terminal portion 15 of the battery 10, the narrow ribbon portions 105 move with the movement of the main body portion 105. The portions 51x and 52x are pulled out from the guide tip side portion 125g of the transport portion 120. Therefore, the main body 105 is moved by the moving mechanism 160 so that loops are formed in the drawn narrow ribbon portions 51x and 52x, respectively.

なお、この第１移動分割工程Ｓ２２において、新たに一対の小幅リボン部５１ｘ，５２ｘが形成される。即ち、繰出部１１０から新たに広幅金属リボン５０が繰り出され、搬送部１２０によって接合チップ１４１のチップ先端部１４１ｓに向けて搬送される。この搬送途中において、ガイド部１２５に取り付けられた分割刃１３０で、広幅金属リボン５０が先端側ＡＳから幅方向ＢＨに２本に分割され、新たに一対の小幅リボン部５１ｘ，５２ｘが形成される。これらの小幅リボン部５１ｘ，５２ｘは、ガイド部１２５によって接合チップ１４１のチップ先端部１４１ｓに案内される。 In the first moving division step S22, a pair of narrow ribbon portions 51x and 52x are newly formed. That is, the wide metal ribbon 50 is newly fed from the feeding portion 110, and is conveyed by the conveying portion 120 toward the tip tip portion 141s of the joining tip 141. During this transfer, the wide metal ribbon 50 is divided into two in the width direction BH from the tip side AS by the split blade 130 attached to the guide portion 125, and a pair of narrow ribbon portions 51x and 52x are newly formed. .. These narrow ribbon portions 51x and 52x are guided by the guide portion 125 to the tip tip portion 141s of the joining tip 141.

次に、「第２接合工程Ｓ２３」において、接合部１４０の第１上下移動機構１４５により、接合チップ１４１及び超音波振動子１４３を下方ＥＤに移動させて、接合チップ１４１のチップ先端部１４１ｓで２本の小幅リボン部５１ｘ，５２ｘの第２接合部５１ｂ，５２ｂを、それぞれ負極導電部材３０の第２被接合部３０ｃ，３０ｄに押し付ける（図７参照）。そして、超音波振動子１４３から接合チップ１４１に超音波振動を与えて、２本の小幅リボン部５１ｘ，５２ｘの第２接合部５１ｂ，５２ｂをそれぞれ負極導電部材３０の第２被接合部３０ｃ，３０ｄに超音波接合する。その後、第１上下移動機構１４５により、接合チップ１４１及び超音波振動子１４３を上方ＥＵに移動させる。 Next, in the "second joining step S23", the joining tip 141 and the ultrasonic vibrator 143 are moved downward ED by the first vertical movement mechanism 145 of the joining portion 140, and the tip tip portion 141s of the joining tip 141 The second joints 51b and 52b of the two narrow ribbon portions 51x and 52x are pressed against the second joints 30c and 30d of the negative electrode conductive member 30, respectively (see FIG. 7). Then, ultrasonic vibration is applied from the ultrasonic vibrator 143 to the bonding tip 141, and the second bonding portions 51b and 52b of the two narrow ribbon portions 51x and 52x are formed by the second bonded portions 30c of the negative electrode conductive member 30, respectively. Ultrasonic bonding to 30d. After that, the bonding tip 141 and the ultrasonic vibrator 143 are moved to the upper EU by the first vertical movement mechanism 145.

次に、「第２移動分割工程Ｓ２４」において、移動機構１６０により、ボンディング装置１００の本体部１０５を、負極導電部材３０の第２被接合部３０ｃ，３０ｄよりも図７中、左方に少し移動させる（図８参照）。その際、この移動に伴って、一対の小幅リボン部５１ｘ，５２ｘが更に搬送部１２０から引き出される。また、繰出部１１０から広幅金属リボン５０が更に繰り出され、分割刃１３０で分割されて、一対の小幅リボン部５１ｘ，５２ｘが更に形成される。 Next, in the "second moving division step S24", the moving mechanism 160 causes the main body 105 of the bonding device 100 to be slightly to the left in FIG. 7 of the second bonded portions 30c and 30d of the negative electrode conductive member 30. Move (see FIG. 8). At that time, along with this movement, a pair of narrow ribbon portions 51x and 52x are further pulled out from the conveying portion 120. Further, the wide metal ribbon 50 is further extended from the feeding portion 110 and divided by the dividing blade 130 to further form a pair of narrow ribbon portions 51x and 52x.

次に、「切断工程Ｓ２５」において、２本の小幅リボン部５１ｘ，５２ｘを幅方向ＢＨにそれぞれ切断する。具体的には、幅方向切断部１５０の第２上下移動機構１５３により、切断刃１５１を下方ＥＤに移動させて、切断刃１５１の刃先部１５１ｂで２本の小幅リボン部５１ｘ，５２ｘをそれぞれ幅方向ＢＨに切断する。その後、第２上下移動機構１５３により切断刃１５１を上方ＥＵに移動させる。かくして、２本の小幅リボン部５１ｘ，５２ｘの先端側ＡＳがそれぞれ切り離されて、２本の小幅リボン５１，５２となり（図１及び図２参照）、電池１０の負極端子部１５と負極導電部材３０とが、２本の小幅リボン５１，５２を架け渡した形態で接続される。 Next, in the "cutting step S25", the two narrow ribbon portions 51x and 52x are cut in the width direction BH, respectively. Specifically, the cutting blade 151 is moved downward by the second vertical movement mechanism 153 of the cutting portion 150 in the width direction, and the widths of the two narrow ribbon portions 51x and 52x are respectively widened by the cutting edge portion 151b of the cutting blade 151. Cut in the direction BH. After that, the cutting blade 151 is moved upward to the EU by the second vertical movement mechanism 153. Thus, the tip-side ASs of the two narrow ribbon portions 51x and 52x are separated to form the two narrow ribbon portions 51 and 52 (see FIGS. 1 and 2), and the negative electrode terminal portion 15 and the negative electrode conductive member of the battery 10 are formed. The 30 is connected in a form in which two narrow ribbons 51 and 52 are bridged.

次に、「移動工程Ｓ２６」において、移動機構１６０により、ボンディング装置１００の本体部１０５を次の接合を行う新たな電池１０の負極端子部１５の第１被接合部１５ｃ，１５ｄまで移動させる。
その後は、前述した第１接合工程Ｓ２１、第１移動分割工程Ｓ２２、第２接合工程Ｓ２３、第２移動分割工程Ｓ２４、切断工程Ｓ２５及び移動工程Ｓ２６を繰り返し行って、すべての電池１０の負極端子部１５と負極導電部材３０との間をそれぞれ２本の小幅リボン５１，５２を架け渡して接続する。 Next, in the "moving step S26", the moving mechanism 160 moves the main body 105 of the bonding device 100 to the first bonded portions 15c and 15d of the negative electrode terminal portion 15 of the new battery 10 for the next bonding.
After that, the above-mentioned first joining step S21, first moving splitting step S22, second joining step S23, second moving splitting step S24, cutting step S25, and moving step S26 are repeated to repeat the negative electrode terminals of all the batteries 10. Two narrow ribbons 51 and 52 are bridged and connected between the portion 15 and the negative electrode conductive member 30, respectively.

次に、「正極導電部材接続工程Ｓ３」において、前述の負極導電部材接続工程Ｓ２と同様に、ボンディング装置１００を用いて、すべての電池１０の正極端子部１３と正極導電部材２０との間をそれぞれ２本の小幅リボン５１，５２を架け渡して接続する。即ち、第１接合工程Ｓ３１で、広幅金属リボン５０を２本に分割した小幅リボン部５１ｘ，５２ｘの第１接合部５１ａ，５２ａを、それぞれ電池１０の正極端子部１３に超音波接合する。その後、第１移動分割工程Ｓ３２で、ボンディング装置１００の本体部１０５を移動させて、広幅金属リボン５０を２本に分割して小幅リボン部５１ｘ，５２ｘを形成しつつ、小幅リボン部５１ｘ，５２ｘにそれぞれループを形成する。その後、第２接合工程Ｓ３３で、小幅リボン部５１ｘ，５２ｘの第２接合部５１ｂ，５２ｂをそれぞれ正極導電部材２０に超音波接合する。その後、第２移動分割工程Ｓ３４で、ボンディング装置１００の本体部１０５を更に移動させる。その後、切断工程Ｓ３５で、小幅リボン部５１ｘ，５２ｘを幅方向ＢＨにそれぞれ切断して、小幅リボン５１，５２を形成する。その後、移動工程Ｓ３６で、ボンディング装置１００の本体部１０５を次の接合を行う新たな電池１０の正極端子部１３の第１被接合部１３ｃ，１３ｄまで移動させる。これらの工程を繰り返し行って、すべての電池１０の正極端子部１３と正極導電部材２０との間をそれぞれ小幅リボン５１，５２で接続する。かくして、正極導電部材２０及び負極導電部材３０を用いて電池１０が互いに並列に接続された電池モジュール１が完成する。 Next, in the "positive electrode conductive member connecting step S3", similarly to the negative electrode conductive member connecting step S2 described above, the bonding device 100 is used to connect the positive electrode terminal portions 13 of all the batteries 10 to the positive electrode conductive member 20. Two narrow ribbons 51 and 52, respectively, are bridged and connected. That is, in the first bonding step S31, the first bonding portions 51a and 52a of the narrow ribbon portions 51x and 52x obtained by dividing the wide metal ribbon 50 into two are ultrasonically bonded to the positive electrode terminal portion 13 of the battery 10, respectively. After that, in the first moving division step S32, the main body 105 of the bonding apparatus 100 is moved to divide the wide metal ribbon 50 into two to form the narrow ribbon portions 51x and 52x, and the narrow ribbon portions 51x and 52x. Each loop is formed. Then, in the second bonding step S33, the second bonding portions 51b and 52b of the narrow ribbon portions 51x and 52x are ultrasonically bonded to the positive electrode conductive member 20, respectively. Then, in the second movement division step S34, the main body 105 of the bonding apparatus 100 is further moved. Then, in the cutting step S35, the narrow ribbon portions 51x and 52x are cut in the width direction BH, respectively, to form the narrow ribbon portions 51 and 52. Then, in the moving step S36, the main body 105 of the bonding apparatus 100 is moved to the first bonded portions 13c and 13d of the positive electrode terminal portion 13 of the new battery 10 to be joined next. By repeating these steps, the positive electrode terminal portion 13 of all the batteries 10 and the positive electrode conductive member 20 are connected by narrow ribbons 51 and 52, respectively. Thus, the battery module 1 in which the batteries 10 are connected in parallel to each other by using the positive electrode conductive member 20 and the negative electrode conductive member 30 is completed.

以上で説明したように、電池モジュール１の製造方法は、負極導電部材接続工程Ｓ２に、第１接合工程Ｓ２１、第１移動分割工程Ｓ２２及び第２接合工程Ｓ２３を備える。このため、２本の金属リボンをそれぞれ負極端子部１５や負極導電部材３０に超音波接合する場合に比べて、低コストで、電池１０の負極端子部１５と負極導電部材３０との間に、２本の小幅リボン５１，５２を幅方向ＢＨに並べて架け渡して、これらを接続できる。また、２本の小幅リボン５１，５２を分割された並びを保った状態で架け渡すので、２本の小幅リボン５１，５２を幅方向ＢＨにコンパクトに配置できる。 As described above, the method for manufacturing the battery module 1 includes a first joining step S21, a first moving division step S22, and a second joining step S23 in the negative electrode conductive member connecting step S2. Therefore, as compared with the case where two metal ribbons are ultrasonically bonded to the negative electrode terminal portion 15 and the negative electrode conductive member 30, respectively, the negative electrode terminal portion 15 of the battery 10 and the negative electrode conductive member 30 can be separated at a lower cost. Two narrow ribbons 51 and 52 can be arranged side by side in the width direction BH and bridged to connect them. Further, since the two narrow ribbons 51 and 52 are bridged while maintaining the divided arrangement, the two narrow ribbons 51 and 52 can be compactly arranged in the width direction BH.

同様に、電池モジュール１の製造方法は、正極導電部材接続工程Ｓ３に、第１接合工程Ｓ３１、第１移動分割工程Ｓ３２及び第２接合工程Ｓ３３を備える。このため、２本の金属リボンをそれぞれ正極端子部１３や正極導電部材２０に超音波接合する場合に比べて、低コストで、電池１０の正極端子部１３と正極導電部材２０との間に、２本の小幅リボン５１，５２を幅方向ＢＨに並べて架け渡して、これらを接続できる。また、２本の小幅リボン５１，５２を分割された並びを保った状態で架け渡すので、２本の小幅リボン５１，５２を幅方向ＢＨにコンパクトに配置できる。 Similarly, the method for manufacturing the battery module 1 includes a first joining step S31, a first moving division step S32, and a second joining step S33 in the positive electrode conductive member connecting step S3. Therefore, as compared with the case where two metal ribbons are ultrasonically bonded to the positive electrode terminal portion 13 and the positive electrode conductive member 20, respectively, the two metal ribbons can be placed between the positive electrode terminal portion 13 and the positive electrode conductive member 20 of the battery 10 at a lower cost. Two narrow ribbons 51 and 52 can be arranged side by side in the width direction BH and bridged to connect them. Further, since the two narrow ribbons 51 and 52 are bridged while maintaining the divided arrangement, the two narrow ribbons 51 and 52 can be compactly arranged in the width direction BH.

（変形形態）
次いで、上記実施形態の変形形態について説明する。実施形態では、正極導電部材２０及び負極導電部材３０を用いて電池１０同士が並列に接続された電池モジュール１及びその製造方法を例示した。これに対し、本変形形態の電池モジュール２００（図９参照）は、電池１０同士が直列に接続されている点が異なる。 (Transformed form)
Next, a modified form of the above embodiment will be described. In the embodiment, a battery module 1 in which batteries 10 are connected in parallel using a positive electrode conductive member 20 and a negative electrode conductive member 30, and a method for manufacturing the same are illustrated. On the other hand, the battery module 200 (see FIG. 9) of this modified form is different in that the batteries 10 are connected in series.

本変形形態の電池モジュール２００では、電池モジュール２００の一方側（上側）及び他方側（下側）のそれぞれにおいて、一の電池１０（図９中、左側の電池１０）の負極端子部１５と、これに隣り合う他の電池１０（図９中、右側の電池１０）の正極端子部１３とが、これらの間を架け渡した複数（本変形形態では２本）の小幅リボン５１，５２により接続されている。なお、本変形形態の小幅リボンについて、実施形態の小幅リボン５１，５２と同じ符号を用いて説明する。 In the battery module 200 of this modified form, on one side (upper side) and the other side (lower side) of the battery module 200, the negative electrode terminal portion 15 of one battery 10 (the battery 10 on the left side in FIG. 9) and The positive electrode terminal portion 13 of another battery 10 (the battery 10 on the right side in FIG. 9) adjacent to this is connected by a plurality of (two in this modified form) narrow ribbons 51 and 52 extending between them. Has been done. The narrow ribbon of this modified form will be described using the same reference numerals as those of the narrow ribbons 51 and 52 of the embodiment.

小幅リボン５１，５２は、広幅金属リボン５０を幅方向ＢＨに複数本（本変形形態では２本）に分割して出来たものである。これらの小幅リボン５１，５２は、その分割されたときの並びを保った状態で、一の電池１０の負極端子部１５と、これに隣り合う他の電池１０の正極端子部１３との間にそれぞれ架け渡されている。このため、負極端子部１５と正極端子部１３との接続信頼性が高い。また、２本の小幅リボン５１，５２を分割された並びを保った状態で架け渡しているので、２本の小幅リボン５１，５２を幅方向ＢＨにコンパクトに配置できる。 The narrow ribbons 51 and 52 are formed by dividing the wide metal ribbon 50 into a plurality of ribbons (two in this modified form) in the width direction BH. These narrow ribbons 51 and 52 are placed between the negative electrode terminal portion 15 of one battery 10 and the positive electrode terminal portion 13 of another battery 10 adjacent thereto while maintaining the arrangement when the ribbons are divided. Each is bridged. Therefore, the connection reliability between the negative electrode terminal portion 15 and the positive electrode terminal portion 13 is high. Further, since the two narrow ribbons 51 and 52 are bridged while maintaining the divided arrangement, the two narrow ribbons 51 and 52 can be compactly arranged in the width direction BH.

この電池モジュール２００は、以下のようにして製造する（図１０参照）。まず、「電池保持工程Ｓ１」において、複数の電池１０を電池保持部材（不図示）に保持させる。
次に、「一方側電極端子部接続工程Ｓ４」において、前述のボンディング装置１００を用いて、電池モジュール２００の一方側（上側）について、隣り合う電池１０の正極端子部１３と負極端子部１５とを、２本の小幅リボン５１，５２を架け渡して接続する。即ち、実施形態の負極導電部材接続工程Ｓ２及び正極導電部材接続工程Ｓ３と同様に、第１接合工程Ｓ４１、第１移動分割工程Ｓ４２、第２接合工程Ｓ４３、第２移動分割工程Ｓ４４、切断工程Ｓ４５及び移動工程Ｓ４６を繰り返し行って、隣り合う電池１０の正極端子部１３と負極端子部１５とをそれぞれ接続する。 The battery module 200 is manufactured as follows (see FIG. 10). First, in the "battery holding step S1", a plurality of batteries 10 are held by a battery holding member (not shown).
Next, in the "one-side electrode terminal connection step S4", the positive electrode terminal 13 and the negative electrode 15 of the adjacent batteries 10 are attached to one side (upper side) of the battery module 200 by using the bonding device 100 described above. Are connected by straddling two narrow ribbons 51 and 52. That is, similarly to the negative electrode conductive member connecting step S2 and the positive electrode conductive member connecting step S3 of the embodiment, the first joining step S41, the first moving division step S42, the second joining step S43, the second moving dividing step S44, and the cutting step. The positive electrode terminal portion 13 and the negative electrode terminal portion 15 of the adjacent batteries 10 are connected to each other by repeating S45 and the moving step S46.

次に、「他方側電極端子部接続工程Ｓ５」において、電池モジュール２００の他方側（下側）についても、隣り合う電池１０の正極端子部１３と負極端子部１５とを、小幅リボン５１，５２を架け渡して接続する。即ち、一方側電極端子部接続工程Ｓ４と同様に、第１接合工程Ｓ５１、第１移動分割工程Ｓ５２、第２接合工程Ｓ５３、第２移動分割工程Ｓ５４、切断工程Ｓ５５及び移動工程Ｓ５６を繰り返し行って、隣り合う電池１０の正極端子部１３と負極端子部１５とをそれぞれ接続する。かくして、複数の電池１０が互いに直列に接続された電池モジュール２００が完成する。 Next, in the "other side electrode terminal portion connecting step S5", also on the other side (lower side) of the battery module 200, the positive electrode terminal portion 13 and the negative electrode terminal portion 15 of the adjacent batteries 10 are connected to the narrow ribbons 51 and 52. To connect by bridging. That is, similarly to the one-side electrode terminal connection step S4, the first joining step S51, the first moving splitting step S52, the second joining step S53, the second moving splitting step S54, the cutting step S55, and the moving step S56 are repeated. The positive electrode terminal portion 13 and the negative electrode terminal portion 15 of the adjacent batteries 10 are connected to each other. Thus, the battery module 200 in which the plurality of batteries 10 are connected in series with each other is completed.

本変形形態の電池モジュール２００の製造方法も、第１接合工程Ｓ４１，Ｓ５１、第１移動分割工程Ｓ４２，Ｓ５２、第２接合工程Ｓ４３，Ｓ５３を備える。このため、２本の金属リボンをそれぞれ正極端子部１３や負極端子部１５に超音波接合する場合に比べて、低コストで、電池１０の正極端子部１３と負極端子部１５との間に、２本の小幅リボン５１，５２を幅方向ＢＨに並べて架け渡して、これらを接続できる。また、２本の小幅リボン５１，５２を分割された並びを保った状態で架け渡すので、２本の小幅リボン５１，５２を幅方向ＢＨにコンパクトに配置できる。その他、実施形態と同様な部分は、実施形態と同様な作用効果を奏する。 The manufacturing method of the battery module 200 of the present modified form also includes the first joining steps S41 and S51, the first moving division steps S42 and S52, and the second joining steps S43 and S53. Therefore, as compared with the case where two metal ribbons are ultrasonically bonded to the positive electrode terminal portion 13 and the negative electrode terminal portion 15, respectively, the distance between the positive electrode terminal portion 13 and the negative electrode terminal portion 15 of the battery 10 is low. Two narrow ribbons 51 and 52 can be arranged side by side in the width direction BH and bridged to connect them. Further, since the two narrow ribbons 51 and 52 are bridged while maintaining the divided arrangement, the two narrow ribbons 51 and 52 can be compactly arranged in the width direction BH. Other parts similar to those in the embodiment have the same effects as those in the embodiment.

以上において、本発明を実施形態及び変形形態に即して説明したが、本発明は上述の実施形態及び変形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、２本の小幅リボン部５１ｘ，５２ｘによる電池１０の負極端子部１５と負極導電部材３０との接続について、先に小幅リボン部５１ｘ，５２ｘと負極端子部１５との接合を行い、その後に小幅リボン部５１ｘ，５２ｘと負極導電部材３０との接合を行ったが、これに限られない。実施形態とは逆に、先に小幅リボン部５１ｘ，５２ｘと負極導電部材３０との接合を行い、その後に小幅リボン部５１ｘ，５２ｘと負極端子部１５との接合を行ってもよい。 In the above, the present invention has been described in accordance with the embodiments and modifications, but the present invention is not limited to the above-described embodiments and modifications, and is appropriately modified and applied without departing from the gist thereof. Needless to say, you can do it.
For example, in the embodiment, regarding the connection between the negative electrode terminal portion 15 of the battery 10 and the negative electrode conductive member 30 by the two narrow ribbon portions 51x, 52x, the narrow ribbon portions 51x, 52x and the negative electrode terminal portion 15 are first joined. After that, the narrow ribbon portions 51x and 52x were joined to the negative electrode conductive member 30, but the present invention is not limited to this. Contrary to the embodiment, the narrow ribbon portions 51x and 52x may be joined to the negative electrode conductive member 30 first, and then the narrow ribbon portions 51x and 52x may be joined to the negative electrode terminal portion 15.

１，２００ 電池モジュール
１０ 電池
１３ 正極端子部（電極端子部）
１３ｃ，１３ｄ 第１被接合部
１５ 負極端子部（電極端子部）
１５ｃ，１５ｄ 第１被接合部
２０ 正極導電部材
２０ｃ，２０ｄ 第２被接合部
３０ 負極導電部材
３０ｃ，３０ｄ 第２被接合部
５０ 広幅金属リボン
５１，５２ 小幅リボン
５１ｘ，５２ｘ 小幅リボン部
５１ａ，５２ａ 第１接合部
５１ｂ，５２ｂ 第２接合部
１００ ボンディング装置
１１０ 繰出部
１２０ 搬送部
１３０ 分割刃
１４０ 接合部
１４１ 接合チップ
１４３ 超音波振動子
１５０ 幅方向切断部
１５１ 切断刃
ＡＨ 長手方向
ＡＳ 先端側
ＢＨ 幅方向
ＫＧ 隙間
Ｓ１ 電池保持工程
Ｓ２ 負極導電部材接続工程
Ｓ３ 正極導電部材接続工程
Ｓ４ 一方側電極端子部接続工程
Ｓ５ 他方側電極端子部接続工程
Ｓ２１，Ｓ３１，Ｓ４１，Ｓ５１ 第１接合工程
Ｓ２２，Ｓ３２，Ｓ４２，Ｓ５２ 第１移動分割工程
Ｓ２３，Ｓ３３，Ｓ４３ Ｓ５３ 第２接合工程
Ｓ２４，Ｓ３４，Ｓ４４ Ｓ５４ 第２移動分割工程
Ｓ２５，Ｓ３５，Ｓ４５，Ｓ５５ 切断工程
Ｓ２６，Ｓ３６ Ｓ４６ Ｓ５６ 移動工程 1,200 Battery module 10 Battery 13 Positive electrode terminal (electrode terminal)
13c, 13d 1st joint 15 Negative electrode terminal (electrode terminal)
15c, 15d 1st bonded part 20 Positive electrode conductive member 20c, 20d 2nd bonded part 30 Negative electrode conductive member 30c, 30d 2nd bonded part 50 Wide metal ribbon 51, 52 Narrow ribbon 51x, 52x Narrow ribbon 51a, 52a 1st joint 51b, 52b 2nd joint 100 Bonding device 110 Feeding part 120 Conveying part 130 Dividing blade 140 Joint part 141 Joining tip 143 Ultrasonic transducer 150 Width direction cutting part 151 Cutting blade AH Longitudinal direction AS Tip side BH Width Direction KG Gap S1 Battery holding step S2 Negative electrode conductive member connection step S3 Positive electrode conductive member connection step S4 One side electrode terminal connection step S5 Other side electrode terminal connection step S21, S31, S41, S51 First joining step S22, S32, S42, S52 First moving division step S23, S33, S43 S53 Second joining step S24, S34, S44 S54 Second moving split step S25, S35, S45, S55 Cutting step S26, S36 S46 S56 Moving step

Claims (1)

金属リボンを幅方向に複数本に分割した小幅リボンが、その分割された並びを保った状態で、一の電池の電極端子部と、他の電池の電極端子部及び導電部材のいずれかとの間にそれぞれ架け渡された
電池モジュールの製造方法であって、
接合チップで複数本の小幅リボン部の第１接合部を、それぞれ、上記一の電池の電極端子部、または、上記他の電池の電極端子部及び上記導電部材のうちの一方に押し付けつつ、上記接合チップに超音波振動を与えて、上記第１接合部を、それぞれ、上記一の電池の電極端子部、または、上記他の電池の電極端子部及び上記導電部材のうちの上記一方に超音波接合する第１接合工程と、
繰り出された上記金属リボンを分割刃で先端側から幅方向に複数に分割し、分割された複数本の上記小幅リボン部を上記接合チップに供給しつつ、上記接合チップ及び上記分割刃を、上記一の電池の電極端子部から上記他の電池の電極端子部及び上記導電部材のうちの上記一方まで、または、上記他の電池の電極端子部及び上記導電部材のうちの上記一方から上記一の電池の電極端子部まで移動させて、複数本の上記小幅リボン部にそれぞれループを形成する移動分割工程と、
上記接合チップで複数本の上記小幅リボン部の第２接合部を、それぞれ、上記他の電池の電極端子部及び上記導電部材のうちの上記一方、または、上記一の電池の電極端子部に押し付けつつ、上記接合チップに超音波振動を与えて、上記第２接合部を、それぞれ、上記他の電池の電極端子部及び上記導電部材のうちの上記一方、または、上記一の電池の電極端子部に超音波接合する第２接合工程と、を備える
電池モジュールの製造方法。 A small width ribbon obtained by dividing a metal ribbon into a plurality of pieces in the width direction is maintained between the electrode terminals of one battery and one of the electrode terminals and a conductive member of another battery in a state where the divided ribbons are maintained. It is a manufacturing method of the battery module that is bridged to each of the above.
The first joint of a plurality of narrow ribbon portions is pressed against one of the electrode terminal portion of the one battery, the electrode terminal portion of the other battery, and the conductive member of the other battery, respectively, with the bonding tip. Ultrasonic vibration is applied to the bonding tip, and the first bonding portion is subjected to ultrasonic waves to the electrode terminal portion of the one battery or the electrode terminal portion of the other battery and one of the conductive members, respectively. The first joining process to join and
The drawn metal ribbon is divided into a plurality of pieces in the width direction from the tip side by a dividing blade, and the divided plurality of narrow ribbon portions are supplied to the joining tip, and the joining tip and the dividing blade are used. From the electrode terminal portion of one battery to the electrode terminal portion of the other battery and the above one of the conductive members, or from the electrode terminal portion of the other battery and the above one of the conductive members to the above one A moving division step of moving the battery to the electrode terminal portion to form a loop on each of the plurality of narrow ribbon portions.
With the bonding tip, the second bonding portions of the plurality of narrow ribbon portions are pressed against the electrode terminal portion of the other battery and the electrode terminal portion of the conductive member, or the electrode terminal portion of the one battery, respectively. At the same time, ultrasonic vibration is applied to the bonding chip, and the second bonding portion is formed with the electrode terminal portion of the other battery and the electrode terminal portion of the above-mentioned one of the above-mentioned conductive members or the above-mentioned one battery, respectively. A method of manufacturing a battery module comprising a second bonding step of ultrasonically bonding to a battery.
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