JP2007026907A - Battery and manufacturing method of battery pack - Google Patents

Battery and manufacturing method of battery pack Download PDF

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JP2007026907A
JP2007026907A JP2005207925A JP2005207925A JP2007026907A JP 2007026907 A JP2007026907 A JP 2007026907A JP 2005207925 A JP2005207925 A JP 2005207925A JP 2005207925 A JP2005207925 A JP 2005207925A JP 2007026907 A JP2007026907 A JP 2007026907A
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terminal
convex
receiving
battery
joint
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Shohei Matsushita
昇平 松下
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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

<P>PROBLEM TO BE SOLVED: To provide a battery allowing electrode terminals to be easily positioned in jointing the electrode terminals to each other; and to provide a manufacturing method of a battery pack composed by connecting the plurality of such batteries to one another. <P>SOLUTION: Cells 110 and 140 have positive electrode terminals 120 and 150 and negative electrode terminals 130 and 160, respectively. The negative electrode terminal 160 of the cell 140 is provided with a negative electrode second extension part 163 having projecting parts 165. The positive electrode terminal 120 of the cell 120 is provided with a positive electrode second extension part 123 having reception parts 125 comprising cutouts. When the cells 110 and 140 are arranged adjacently to each other, the negative electrode second extension part 163 of the cell 140 is superposed on the positive electrode second extension part 123 of the cell 110 and the projecting parts 165 are fitted to the reception parts 125. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ケースから突出する第１電極端子と第２電極端子とを備え、隣り合って配置された他の電池と電気的に接続するように構成されてなる電池、及び、このような電池を複数電気的に接続してなる組電池の製造方法に関する。   The present invention includes a battery including a first electrode terminal and a second electrode terminal protruding from a case and configured to be electrically connected to another battery disposed adjacent to the battery, and such a battery. It is related with the manufacturing method of the assembled battery formed by electrically connecting two or more.

従来より、隣り合って配置された他の電池と電気的に接続するように構成された電池や、このような電池を複数電気的に接続した組電池が知られている。第１の従来技術として、図１３に、組電池７００のうち、１組の単電池７１０，７４０が互いに隣り合って配置され、電気的に接続された様子を示す。組電池７００を構成する単電池７１０，７４０は、電池要素をラミネート樹脂フィルムで包囲したいわゆるラミネートセルである。一方の単電池７１０は、正極電極端子７２０と負極電極端子７３０とを有し、他方の単電池７４０も、正極電極端子７５０と負極電極端子７６０とを有する。   Conventionally, a battery configured to be electrically connected to other batteries arranged adjacent to each other, and a battery pack in which a plurality of such batteries are electrically connected are known. As a first conventional technique, FIG. 13 shows a state in which a set of single cells 710 and 740 are arranged adjacent to each other and electrically connected in the assembled battery 700. The unit cells 710 and 740 constituting the assembled battery 700 are so-called laminate cells in which battery elements are surrounded by a laminate resin film. One unit cell 710 has a positive electrode terminal 720 and a negative electrode terminal 730, and the other unit cell 740 also has a positive electrode terminal 750 and a negative electrode terminal 760.

一方の単電池７１０の正極電極端子７２０は、単電池７１０の一端辺（図中、上方）から延出する板状の正極第１延出部７２１と、この正極第１延出部７２１の先端部分で直角に屈曲して単電池７１０，７４０同士の配置方向Ｈに延出する板状の正極第２延出部７２３とを有する。また、他方の単電池７４０の負極電極端子７６０も、単電池７４０の一端辺（図中、上方）から延出する板状の負極第１延出部７６１と、この負極第１延出部７６１の先端部分で直角に屈曲して上記配置方向Ｈに延出する板状の負極第２延出部７６３とを有する。なお、正極第２延出部７２３と負極第２延出部７６３は、互いに反対方向に向かって延出している。そして、互いに隣り合って配置された単電池７１０，７４０同士は、一方の単電池７１０の正極第２延出部７２３と、他方の単電池７４０の負極第２延出部７６３とを重ねた状態で、これらをスポット溶接などの手法で溶接することにより、直列に接続されている。   The positive electrode terminal 720 of one unit cell 710 has a plate-like positive electrode first extension 721 extending from one end side (upward in the drawing) of the unit cell 710 and the tip of the positive electrode first extension 721. It has a plate-like positive electrode second extending portion 723 that is bent at a right angle at a portion and extends in the arrangement direction H of the cells 710 and 740. Further, the negative electrode terminal 760 of the other unit cell 740 also has a plate-like negative electrode first extension 761 extending from one end side (upward in the drawing) of the unit cell 740, and the negative electrode first extension 761. And a plate-like negative electrode second extension portion 763 that is bent at a right angle at the tip portion and extends in the arrangement direction H. In addition, the positive electrode 2nd extension part 723 and the negative electrode 2nd extension part 763 are extended toward the mutually opposite direction. The unit cells 710 and 740 arranged adjacent to each other are in a state where the positive electrode second extension portion 723 of one unit cell 710 and the negative electrode second extension portion 763 of the other unit cell 740 are overlapped. Then, they are connected in series by welding them by a technique such as spot welding.

また、第２の従来技術として、図１４に、組電池８００のうち、１組の単電池８１０，８４０が互いに隣り合って配置され、電気的に接続された様子を示す。この組電池８００を構成する単電池８１０，８４０も、ラミネートセルである。また、一方の単電池８１０は、正極電極端子８２０と負極電極端子８３０とを有し、他方の単電池８４０も、正極電極端子８５０と負極電極端子８６０とを有する。   As a second conventional technique, FIG. 14 shows a state in which a set of single cells 810 and 840 of the assembled battery 800 are arranged adjacent to each other and electrically connected. The single cells 810 and 840 constituting the assembled battery 800 are also laminate cells. One unit cell 810 has a positive electrode terminal 820 and a negative electrode terminal 830, and the other unit cell 840 also has a positive electrode terminal 850 and a negative electrode terminal 860.

一方の単電池８１０の正極電極端子８２０は、単電池８１０の一端辺（図中、上方）から延出する板状の正極第１延出部８２１と、この正極第１延出部８２１の先端部分で直角に屈曲して単電池８１０，８４０の配置方向Ｈに延出する板状の正極第２延出部８２３と、更にこの正極第２延出部８２３の先端部分で直角に屈曲して正極第１延出部８２１と平行に延びる板状の正極第３延出部８２５とを有する。また、他方の単電池８４０の負極電極端子８６０も、単電池８４０の一端辺（図中、上方）から延出する板状の負極第１延出部８６１と、この負極第１延出部８６１の先端部分で直角に屈曲して上記配置方向Ｈに延出する板状の負極第２延出部８６３と、更にこの負極第２延出部８６３の先端部分で直角に屈曲して負極第１延出部８６１と平行に延びる板状の負極第３延出部８６５とを有する。なお、正極第２延出部８２３と負極第２延出部８６３は、互いに反対方向に向かって延出している。そして、互いに隣り合って配置された単電池８１０，８４０同士は、一方の単電池８１０の正極第３延出部８２５と、他方の単電池８４０の負極第３延出部８６５とを重ねた状態で、これらをスポット溶接などの手法で溶接することにより、直列に接続されている。   The positive electrode terminal 820 of one unit cell 810 includes a plate-shaped first positive extension 821 extending from one end side (upward in the drawing) of the single cell 810 and the tip of the positive first extension 821. The plate-like positive electrode second extending portion 823 that is bent at a right angle and extends in the arrangement direction H of the single cells 810 and 840, and further, the front end portion of the positive electrode second extending portion 823 is bent at a right angle. It has a plate-like positive third extension portion 825 extending in parallel with the positive first extension portion 821. In addition, the negative electrode terminal 860 of the other unit cell 840 also has a plate-like negative electrode first extension 861 extending from one end side (upward in the drawing) of the unit cell 840, and the negative electrode first extension 861. The plate-like negative electrode second extension portion 863 that is bent at a right angle at the tip portion of the negative electrode and extends in the arrangement direction H, and further bent at a right angle at the tip portion of the negative electrode second extension portion 863 to be negative electrode first. It has a plate-like negative electrode third extending portion 865 extending in parallel with the extending portion 861. In addition, the positive electrode 2nd extension part 823 and the negative electrode 2nd extension part 863 are extended toward the mutually opposite direction. The cells 810 and 840 arranged adjacent to each other are in a state in which the positive electrode third extending portion 825 of one of the single cells 810 and the negative electrode third extending portion 865 of the other single cell 840 are overlapped. Then, they are connected in series by welding them by a technique such as spot welding.

更に、第３の従来技術として、図１５に、組電池９００のうち、１組の単電池９１０，９４０が互いに隣り合って配置され、電気的に接続された様子を示す。この組電池９００を構成する単電池９１０，９４０も、ラミネートセルである。また、一方の単電池９１０は、正極電極端子９２０と負極電極端子９３０とを有し、他方の単電池９４０も、正極電極端子９５０と負極電極端子９６０とを有する。   Furthermore, as a third prior art, FIG. 15 shows a state in which a set of unit cells 910 and 940 are arranged adjacent to each other and electrically connected in the assembled battery 900. The single cells 910 and 940 constituting the assembled battery 900 are also laminate cells. One unit cell 910 has a positive electrode terminal 920 and a negative electrode terminal 930, and the other unit cell 940 also has a positive electrode terminal 950 and a negative electrode terminal 960.

一方の単電池９１０の正極電極端子９２０は、単電池９１０の一端辺（図中、上方）から延出する板状の正極第１延出部９２１と、この正極第１延出部９２１の先端部分で直角に屈曲して単電池９１０，９４０の配置方向Ｈに延出する板状の正極第２延出部９２３とを有する。また、他方の単電池９４０の負極電極端子９６０も、単電池９４０の一端辺（図中、上方）から延出する板状の負極第１延出部９６１と、この負極第１延出部９６１の先端部分で直角に屈曲して上記配置方向Ｈに延出する板状の負極第２延出部９６３とを有する。なお、正極第２延出部９２３と負極第２延出部９６３は、互いに反対方向に向かって延出している。そして、互いに隣り合って配置された単電池９１０，９４０同士は、一方の単電池９１０の正極第２延出部９２３の先端と、他方の単電池９４０の負極第２延出部９６３の先端とを突き合わせて当接させた状態で、これらをスポット溶接などの手法で溶接することにより、直列に接続されている。   The positive electrode terminal 920 of one unit cell 910 includes a plate-shaped first positive extension 921 extending from one end side (upward in the drawing) of the single cell 910 and the tip of the positive first extension 921. It has a plate-like positive electrode second extension portion 923 that is bent at a right angle and extends in the arrangement direction H of the cells 910 and 940. Further, the negative electrode terminal 960 of the other unit cell 940 also has a plate-like negative electrode first extension 961 extending from one end side (upward in the drawing) of the unit cell 940, and this negative electrode first extension 961. And a plate-like negative electrode second extending portion 963 that is bent at a right angle at the tip portion and extends in the arrangement direction H. In addition, the positive electrode 2nd extension part 923 and the negative electrode 2nd extension part 963 are extended toward the mutually opposite direction. The unit cells 910 and 940 arranged adjacent to each other are connected to the tip of the positive electrode second extension 923 of one unit cell 910 and the tip of the negative electrode second extension 963 of the other unit cell 940. Are connected in series by welding them with a technique such as spot welding.

なお、その他の従来技術として、特許文献１に開示された電池パックや、特許文献２に開示された電池が挙げられる。   Other conventional techniques include the battery pack disclosed in Patent Document 1 and the battery disclosed in Patent Document 2.

特開平１１−１６７９１２号公報JP-A-11-167912 特開２００３−７７４４２号公報JP 2003-77442 A

従来技術１として示した組電池７００は、一方の単電池７１０の正極第２延出部７２３と他方の単電池７４０の負極第２延出部７３３とを重ねたときに、これらが共に平板状であるため、単電池７１０，７４０同士の配置方向Ｈの他、この配置方向Ｈと直交する方向のうち、正極電極端子７２０と負極電極端子７３０とが並ぶ端子並び方向Ｌへも互いに移動することが可能である。このため、上記端子並び方向Ｌについて、一方の単電池７１０の正極電極端子７２０と他方の単電池７４０の負極電極端子７６０とを正確に位置決めして溶接することが難しい。   The assembled battery 700 shown as the prior art 1 is such that when the positive electrode second extending portion 723 of one unit cell 710 and the negative electrode second extending portion 733 of the other unit cell 740 are overlapped, they are both flat. Therefore, in addition to the arrangement direction H of the single cells 710 and 740, the positive electrode terminal 720 and the negative electrode terminal 730 move in the terminal arrangement direction L in the direction orthogonal to the arrangement direction H. Is possible. For this reason, in the terminal arrangement direction L, it is difficult to accurately position and weld the positive electrode terminal 720 of one unit cell 710 and the negative electrode terminal 760 of the other unit cell 740.

一方、従来技術２として示した組電池８００では、一方の単電池８１０の正極第３延出部８２５と他方の単電池８４０の負極第３延出部８６５とを面同士で当接させたときに、これらが共に平板状であるため、単電池８１０，８４０同士の配置方向Ｈと直交する方向（例えば端子並び方向Ｌや図中、上下方向など）へ互いに移動することが可能である。このため、配置方向Ｈと直交する方向について、一方の単電池８１０の正極電極端子８２０と他方の単電池８４０の負極電極端子８６０とを正確に位置決めして溶接することが難しい。更に、溶接に際し、単電池８１０の正極第３延出部８３５と単電池８４０の負極第３延出部８６５とを当接させなければならないため、上記配置方向Ｈについての位置決めの許容度が小さい。   On the other hand, in the assembled battery 800 shown as the prior art 2, when the positive electrode third extending portion 825 of one unit cell 810 and the negative electrode third extending portion 865 of the other unit cell 840 are brought into contact with each other. In addition, since they are both flat, they can move to each other in a direction perpendicular to the arrangement direction H of the single cells 810 and 840 (for example, the terminal arrangement direction L and the vertical direction in the figure). For this reason, it is difficult to accurately position and weld the positive electrode terminal 820 of one unit cell 810 and the negative electrode terminal 860 of the other unit cell 840 in the direction orthogonal to the arrangement direction H. Furthermore, since the positive electrode third extending portion 835 of the unit cell 810 and the negative electrode third extending portion 865 of the unit cell 840 must be brought into contact with each other during welding, positioning tolerance in the arrangement direction H is small. .

更に、従来技術３として示した組電池９００では、一方の単電池９１０の正極第２延出部９２３と他方の単電池９４０の負極第２延出部９６３とを先端同士で突き合わせて当接させたときに、単電池９１０，９４０同士の配置方向Ｈと直交する方向（例えば端子並び方向Ｌや図中、上下方向など）へ互いに移動することが可能である。このため、配置方向Ｈと直交する方向について、一方の単電池９１０の正極電極端子９２０と他方の単電池９４０の負極電極端子９６０とを正確に位置決めして溶接することが難しい。また、溶接に際し、単電池９１０の正極第２延出部９２３と単電池９４０の負極第２延出部９６３とを先端同士で突き合わせて当接させなければならないため、上記配置方向Ｈについての位置決めの許容度が小さい。また更に、単電池９１０の正極第２延出部９２３と単電池９４０の負極第２延出部９６３とを先端同士で溶接するために、溶接部分が小さくなる。このため、正極電極端子９２０と負極電極端子９６０との接合強度が小さく、また、接合部分の電気抵抗が大きくなちがちである。   Furthermore, in the assembled battery 900 shown as the prior art 3, the positive electrode second extending portion 923 of one unit cell 910 and the negative electrode second extending portion 963 of the other unit cell 940 are abutted and brought into contact with each other. In this case, it is possible to move each other in a direction orthogonal to the arrangement direction H of the single cells 910 and 940 (for example, the terminal arrangement direction L and the vertical direction in the figure). For this reason, it is difficult to accurately position and weld the positive electrode terminal 920 of one unit cell 910 and the negative electrode terminal 960 of the other unit cell 940 in a direction orthogonal to the arrangement direction H. Further, when welding, the positive electrode second extending portion 923 of the unit cell 910 and the negative electrode second extending portion 963 of the unit cell 940 must be brought into contact with each other at the tip end, so that positioning in the arrangement direction H is performed. The tolerance of is small. In addition, since the positive electrode second extending portion 923 of the unit cell 910 and the negative electrode second extending portion 963 of the unit cell 940 are welded at the tips, the welded portion is reduced. For this reason, the bonding strength between the positive electrode terminal 920 and the negative electrode terminal 960 tends to be small, and the electric resistance of the bonded portion tends to be large.

本発明は、かかる現状に鑑みてなされたものであって、電池同士を接続する際に電極端子同士の位置決めを容易にできる電池、及び、このような電池を複数接続した組電池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 current situation, and provides a battery capable of easily positioning electrode terminals when connecting the batteries, and a method of manufacturing an assembled battery in which a plurality of such batteries are connected. The purpose is to provide.

その解決手段は、ケースから突出する第１電極端子と第２電極端子とを備え、隣り合って配置された他の電池と電気的に接続するように構成されてなる電池であって、前記第１電極端子は、凸部を有する凸接合部を備え、前記第２電極端子は、前記他の電池を隣り合わせに配置したとき、他の電池における前記第１電極端子の前記凸接合部と重なる受入接合部であって、前記凸部と嵌合する貫通孔或いは切り欠きからなる受入部を有する受入接合部を備える電池である。   The solution is a battery comprising a first electrode terminal and a second electrode terminal projecting from a case, the battery configured to be electrically connected to another battery disposed adjacent to the battery, 1 electrode terminal is provided with the convex junction part which has a convex part, and when the said 2nd electrode terminal arrange | positions the said other battery adjacently, the acceptance which overlaps with the said convex junction part of the said 1st electrode terminal in another battery The battery includes a receiving joint portion having a receiving portion including a through hole or a notch that is a joint portion and is fitted to the convex portion.

本発明によれば、電池同士を隣り合わせに配置したときに、一方の電池の第１電極端子の凸接合部と他方の電池の第２電極端子の受入接合部とが重なり、凸接合部に設けられた凸部と受入接合部に設けられた受入部とが嵌合する。このため、隣り合う電池同士の第１電極端子と第２電極端子とを接合する際に、電極端子同士の位置決めが容易である。   According to the present invention, when the batteries are arranged next to each other, the convex joint portion of the first electrode terminal of one battery overlaps the receiving joint portion of the second electrode terminal of the other battery, and is provided at the convex joint portion. The convex portion thus formed and the receiving portion provided at the receiving joint portion are fitted. For this reason, when joining the 1st electrode terminal and 2nd electrode terminal of adjacent batteries, positioning of electrode terminals is easy.

また、例えば従来技術１で示した単電池７１０において、正極電極端子７２０と負極電極端子７６０とをスポット溶接により接合する場合には、正極第２延出部７２３と負極第２延出部７６３とを狭持し電流を流すために、これらの周囲に治具を配置するための十分なスペースが必要となる。このため、単電池７１０，７４０同士の配置間隔、或いは、正極電極端子７２０及び負極電極端子７６０を大きくせざるを得ないため、単電池７１０，７４０及び組電池７００の小型化が困難である。   For example, in the unit cell 710 shown in the related art 1, when the positive electrode terminal 720 and the negative electrode terminal 760 are joined by spot welding, the positive electrode second extension portion 723 and the negative electrode second extension portion 763 In order to allow the current to flow between them, a sufficient space for arranging jigs around these is required. For this reason, since the arrangement | positioning space | interval of the single cells 710 and 740, or the positive electrode terminal 720 and the negative electrode terminal 760 must be enlarged, it is difficult to reduce the size of the single cells 710 and 740 and the assembled battery 700.

これに対し、本発明では、凸接合部と受入接合部とを重ねて、受入接合部側からレーザや電子ビーム等を照射することで凸部と受入部とを溶接できるので、受入接合部側にのみ溶接のためのスペースを確保すれば足りる。従って、電池同士の配置間隔を小さくし、また、第１，第２電極端子も小さくできる。更に、組電池を構成したときに、組電池を小型化できる。   On the other hand, in the present invention, the convex joint and the receiving joint can be overlapped, and the convex and the receiving part can be welded by irradiating a laser, an electron beam, or the like from the receiving joint. It is only necessary to secure a space for welding. Accordingly, the arrangement interval between the batteries can be reduced, and the first and second electrode terminals can be reduced. Furthermore, when the assembled battery is configured, the assembled battery can be reduced in size.

ここで、凸部及び受入部は、凸接合部と受入接合部とを重ねたときに互いに嵌合するものであれば、いずれの形態とすることもできる。例えば、凸部を円柱や角柱などの柱形状とする一方、受入部をこれと嵌合する円形や多角形の開口を有する貫通孔や切り欠きとすることができる。また、凸部をその突出方向から見て、Ｓ字形状などの蛇行形状や、Ｌ字状、細長い形状などとする一方、受入部をこれと嵌合する貫通孔や切り欠きとすることもできる。また、凸部及び受入部は、それぞれ単数でも複数でもよい。また、凸接合部及び受入接合部は、形成する凸部や受入部、また相手方となる凸部や受入部の形態を考慮して適宜その形態を選択することができる。   Here, the convex portion and the receiving portion can be in any form as long as they fit each other when the convex joint portion and the receiving joint portion are overlapped. For example, the convex portion may be a columnar shape such as a cylinder or a prism, while the receiving portion may be a through hole or a notch having a circular or polygonal opening that fits the receiving portion. Further, when the convex portion is viewed from the protruding direction, the convex portion has a meandering shape such as an S shape, an L shape, an elongated shape, or the like, and the receiving portion can be a through-hole or a notch to be fitted therewith. . Further, each of the convex portion and the receiving portion may be singular or plural. In addition, the form of the convex joint and the receiving joint can be appropriately selected in consideration of the form of the convex part and the receiving part to be formed, and the convex part and the receiving part to be the other party.

更に、上記の電池であって、前記凸部は、その突出方向から見て、細長い形状とされてなる電池とすると良い。   Furthermore, in the battery described above, it is preferable that the convex portion is a battery having an elongated shape when viewed from the protruding direction.

本発明によれば、凸部は、その突出方向から見て、細長い形状をなす。このため、第１電極端子と第２電極端子との接合にあたり、凸部と受入部との溶接距離を長くすることができる。従って、第１電極端子と第２電極端子との接合を強固にすることができる。また、接合部分における電気抵抗を小さくすることができる。   According to the present invention, the convex portion has an elongated shape when viewed from the protruding direction. For this reason, in joining the first electrode terminal and the second electrode terminal, the welding distance between the convex portion and the receiving portion can be increased. Accordingly, the bonding between the first electrode terminal and the second electrode terminal can be strengthened. In addition, the electrical resistance at the joint can be reduced.

更に、上記のいずれかに記載の電池であって、前記第１電極端子及び前記第２電極端子は、一方の電池についての前記第１電極端子の前記凸接合部と他方の電池についての前記第２電極端子の前記受入接合部とを重ね、前記凸部と前記受入部とを嵌合させた状態で、電池同士の配置方向に直交する方向への移動を規制する一方、前記配置方向への移動を可能とする形態とされてなる電池とすると良い。   Furthermore, in the battery according to any one of the above, the first electrode terminal and the second electrode terminal include the convex joint portion of the first electrode terminal for one battery and the first electrode terminal for the other battery. In the state where the receiving joint portion of the two-electrode terminals is overlapped and the convex portion and the receiving portion are fitted, the movement in the direction orthogonal to the arrangement direction of the batteries is restricted, while the movement in the arrangement direction is restricted. It is preferable to use a battery that can be moved.

本発明によれば、第１電極端子と第２電極端子とは、凸接合部と受入接合部とを重ね、凸部と受入部とを嵌合させた状態で、電池同士の配置方向に直交する方向への移動が規制される一方、電池同士の配置方向への移動が可能となる。このため、第１電極端子と第２電極端子とを接合するに際し、電池の配置方向と直交する方向について、電極端子同士を正確に位置決めできる上、電池の配置方向については、位置決めの許容度が大きくなる。このように配置方向について位置決めの許容度が大きいと、個々の電池が有する配置方向の寸法公差を電極端子同士の間隔を変更することで吸収できる。   According to the present invention, the first electrode terminal and the second electrode terminal are orthogonal to the arrangement direction of the batteries in a state in which the convex joint and the receiving joint are overlapped and the convex and the receiving part are fitted. While movement in the direction in which the battery is to be controlled is restricted, movement in the direction in which the batteries are arranged is possible. For this reason, when joining the first electrode terminal and the second electrode terminal, the electrode terminals can be accurately positioned with respect to the direction orthogonal to the battery arrangement direction, and the positioning tolerance is provided for the battery arrangement direction. growing. Thus, when the positioning tolerance is large in the arrangement direction, the dimensional tolerance in the arrangement direction of each battery can be absorbed by changing the interval between the electrode terminals.

更に、上記のいずれかに記載の電池であって、前記凸部及び前記受入部が、それぞれ複数形成されてなる電池とすると良い。   Furthermore, in the battery according to any one of the above, it is preferable that a plurality of the convex portions and the receiving portions are formed.

本発明によれば、凸部及び受入部は、それぞれ複数形成されている。このため、各々の凸部と受入部とを溶接できるので、第１電極端子と第２電極端子の接合を更に強固にできる。また、電極端子間の電気抵抗も更に小さくすることができる。   According to the present invention, a plurality of convex portions and receiving portions are formed. For this reason, since each convex part and a receiving part can be welded, joining of a 1st electrode terminal and a 2nd electrode terminal can be strengthened further. Moreover, the electrical resistance between the electrode terminals can be further reduced.

更に、上記のいずれかに記載の電池であって、前記ケースは、ラミネート樹脂フィルムからなり、前記受入接合部は、前記凸接合部と前記受入接合部とを重ねた状態において、前記凸接合部よりも前記ケースから離れて位置する形態とされてなる電池とすると良い。   Furthermore, in the battery according to any one of the above, the case is made of a laminate resin film, and the receiving joint portion includes the convex joint portion in a state where the convex joint portion and the receiving joint portion are overlapped. It is better to use a battery that is positioned away from the case.

ケースがラミネート樹脂フィルムである場合には、第１電極端子と第２電極端子とを溶接する際、スパッタ（火花）がケースに当たるとケースに穴があくなど、例えば金属製のケースを有する電池に比して、電池が破損しやすい。
これに対し、本発明では、凸接合部と受入接合部を重ねて受入接合部側から凸部と受入部とを溶接する際に、受入接合部が凸接合部よりもケースから離れて位置するので、スパッタが凸接合部側、即ち、ケース側に飛び散ることが抑制される。従って、スパッタにより電池が破損するのを抑制できる。 When the case is a laminated resin film, when welding the first electrode terminal and the second electrode terminal, a spatter (spark) hits the case and a hole is formed in the case, for example, for a battery having a metal case. In comparison, the battery is easily damaged.
In contrast, in the present invention, when the convex joint and the receiving joint are overlapped and the convex and the receiving part are welded from the receiving joint, the receiving joint is positioned farther from the case than the convex joint. Therefore, it is possible to suppress the spatter from scattering to the convex joint portion side, that is, the case side. Therefore, damage to the battery due to sputtering can be suppressed.

また、他の解決手段は、第１電極端子と第２電極端子とを有する電池を複数備え、少なくとも一組の互いに隣り合って配置された電池同士について、一方の電池の前記第１電極端子と他方の電池の前記第２電極端子とを電気的に接続してなる組電池の製造方法であって、前記第１電極端子は、凸部を有する凸接合部を備え、前記第２電極端子は、電池同士を隣り合わせに配置したとき、他の電池の前記凸接合部と重なる受入接合部であって、前記凸部と嵌合する貫通孔或いは切り欠きからなる受入部を有する受入接合部を備え、電池同士を隣り合わせに配置し、一方の電池の前記凸部と他方の電池の前記受入部とを嵌合させつつ、前記凸接合部と前記受入接合部とを重ねてこれらの位置合わせを行う位置合わせ工程と、前記位置合わせ工程後、前記受入接合部側から前記凸部と前記受入部とを溶接する溶接工程と、を備える組電池の製造方法である。   Another solution is provided with a plurality of batteries each having a first electrode terminal and a second electrode terminal, and at least one set of the batteries arranged adjacent to each other with the first electrode terminal of one battery. A method of manufacturing an assembled battery by electrically connecting the second electrode terminal of the other battery, wherein the first electrode terminal includes a convex joint having a convex part, and the second electrode terminal is When the batteries are arranged next to each other, a receiving joint that overlaps with the convex joint of another battery and has a receiving joint made of a through-hole or notch that fits into the convex is provided. The batteries are arranged next to each other, and the convex joint of one battery and the receiving part of the other battery are fitted together, and the convex joint and the receiving joint are overlapped to align them. Alignment process and after the alignment process A welding step of welding the said receiving portion and the protruding portion from the receiving joint portion, a manufacturing method of an assembled battery comprising a.

本発明の組電池の製造方法によれば、位置合わせ工程において、電池同士を隣り合わせに配置し、一方の電池の凸部と他方の電池の受入部とを嵌合させつつ、凸接合部と受入接合部とを重ねてこれらの位置合わせを行う。このため、第１電極端子と第２電極端子との位置合わせが容易である。また、溶接工程において、受入接合部側から凸部と受入部とを溶接する。このため、受入接合部側にのみ溶接のためのスペースを確保すれば足りる。従って、溶接のためのスペースの確保が容易である。   According to the method for manufacturing an assembled battery of the present invention, in the positioning step, the batteries are arranged next to each other, and the convex portion of one battery and the receiving portion of the other battery are fitted together, and the convex joint portion and the receiving portion are received. These positions are aligned by overlapping the joint. For this reason, alignment with the 1st electrode terminal and the 2nd electrode terminal is easy. Moreover, in a welding process, a convex part and a receiving part are welded from the receiving joining part side. For this reason, it is sufficient to secure a space for welding only on the receiving joint side. Therefore, it is easy to secure a space for welding.

また、他の解決手段は、ケースから突出する第１電極端子と第２電極端子とを備え、隣り合って配置された他の電池と端子接続部材を介して電気的に接続するように構成されてなる電池であって、前記第１電極端子は、部材側第１凸部を有する部材側第１凸接合部を備える前記端子接続部材の前記部材側第１凸接合部に重ねたときに、前記部材側第１凸部と嵌合する貫通孔或いは切り欠きからなる端子側第１受入部を有する端子側第１受入接合部、または、貫通孔或いは切り欠きからなる部材側第１受入部を有する部材側第１受入接合部を備える前記端子接続部材の前記部材側第１受入接合部を重ねたときに、前記部材側第１受入部と嵌合する端子側第１凸部を有する端子側第１凸接合部を備え、前記第２電極端子は、部材側第２凸部を有する部材側第２凸接合部を備える前記端子接続部材の前記部材側第２凸接合部に重ねたときに、前記部材側第２凸部と嵌合する貫通孔或いは切り欠きからなる端子側第２受入部を有する端子側第２受入接合部、または、貫通孔或いは切り欠きからなる部材側第２受入部を有する部材側第２受入接合部を備える前記端子接続部材の前記部材側第２受入接合部を重ねたときに、前記部材側第２受入部と嵌合する端子側第２凸部を有する端子側第２凸接合部を備える電池である。   Another solution is provided with a first electrode terminal and a second electrode terminal protruding from the case, and is configured to be electrically connected to another battery arranged adjacent to each other via a terminal connection member. When the first electrode terminal is overlaid on the member-side first convex joint portion of the terminal connection member provided with a member-side first convex joint portion having a member-side first convex portion, A terminal-side first receiving joint portion having a terminal-side first receiving portion made of a through-hole or a notch fitted with the member-side first convex portion, or a member-side first receiving portion made of a through-hole or a notch. The terminal side which has the terminal side 1st convex part fitted to the said member side 1st receiving part when the said member side 1st receiving joint part of the said terminal connection member provided with the member side 1st receiving joint part which has is piled up A first convex joint is provided, and the second electrode terminal has a member-side second convex. A terminal-side second comprising a through-hole or notch that fits with the member-side second convex portion when the member-side second convex joint portion is overlapped with the member-side second convex joint portion of the terminal connecting member provided with the member-side second convex joint portion. The member side second receiving joint having the terminal side second receiving joint having a terminal side second receiving joint having a receiving part or a member side second receiving joint having a member side second receiving part formed of a through hole or a notch. It is a battery provided with the terminal side 2nd convex junction part which has a terminal side 2nd convex part fitted to the said member side 2nd receiving part when a part is piled up.

本発明によれば、第１電極端子の端子側第１受入接合部を端子接続部材の部材側第１凸接合部に重ねたときに、端子側第１受入接合部に設けられた端子側第１受入部と部材側第１凸接合部に設けられた部材側第１凸部とが嵌合する。或いは、第１電極端子の端子側第１凸接合部を端子接続部材の部材側第１受入接合部に重ねたときに、端子側第１凸接合部に設けられた端子側第１凸部と部材側第１受入接合部に設けられた部材側第１受入部とが嵌合する。このため、第１電極端子と端子接続部材とを接合する際に、これらの位置決めが容易である。   According to the present invention, when the terminal-side first receiving joint portion of the first electrode terminal is overlapped with the member-side first convex joint portion of the terminal connecting member, the terminal-side first provided on the terminal-side first receiving joint portion is provided. 1 receiving part and the member side 1st convex part provided in the member side 1st convex junction part fit. Alternatively, when the terminal side first convex joint portion of the first electrode terminal is overlapped with the member side first receiving joint portion of the terminal connection member, the terminal side first convex portion provided on the terminal side first convex joint portion and The member side first receiving portion provided at the member side first receiving joint portion is fitted. For this reason, when joining a 1st electrode terminal and a terminal connection member, these positioning is easy.

また、第２電極端子の端子側第２受入接合部を端子接続部材の部材側第２凸接合部に重ねたときに、端子側第２受入接合部に設けられた端子側第２受入部と部材側第２凸接合部に設けられた部材側第２凸部とが嵌合する。或いは、第２電極端子の端子側第２凸接合部を端子接続部材の部材側第２受入接合部に重ねたときに、端子側第２凸接合部に設けられた端子側第２凸部と部材側第２受入接合部に設けられた部材側第２受入部とが嵌合する。このため、第２電極端子と端子接続部材とを接合する際に、これらの位置決めが容易である。   Further, when the terminal side second receiving joint portion of the second electrode terminal is overlapped with the member side second convex joint portion of the terminal connecting member, the terminal side second receiving portion provided in the terminal side second receiving joint portion; The member side 2nd convex part provided in the member side 2nd convex junction part fits. Alternatively, when the terminal-side second convex joint portion of the second electrode terminal is superimposed on the member-side second receiving joint portion of the terminal connecting member, the terminal-side second convex portion provided in the terminal-side second convex joint portion and The member side second receiving portion provided at the member side second receiving joint portion is fitted. For this reason, when joining a 2nd electrode terminal and a terminal connection member, these positioning is easy.

また、本発明では、第１電極端子の端子側第１受入接合部を端子接続部材の部材側第１凸接合部に重ねて、端子側第１受入接合部側から端子側第１受入部と部材側第１凸部とを溶接できる。或いは、第１電極端子の端子側第１凸接合部を端子接続部材の部材側第１受入接合部に重ねて、部材側第１受入接合部側から端子側第１凸部と部材側第１受入部とを溶接できる。このため、端子側第１受入接合部側または部材側第１受入接合部側にのみ溶接のためのスペースを確保すれば足りる。従って、電池同士の配置間隔を小さくし、また、第１電極端子及び端子接続部材も小さくできる。   Moreover, in this invention, the terminal side 1st receiving junction part of a 1st electrode terminal is piled up on the member side 1st convex junction part of a terminal connection member, and a terminal side 1st receiving part from the terminal side 1st receiving junction part side, The member side first convex portion can be welded. Alternatively, the terminal-side first convex joint portion of the first electrode terminal is overlapped with the member-side first receiving joint portion of the terminal connection member, and the terminal-side first convex portion and the member-side first are placed from the member-side first receiving joint portion side. The receiving part can be welded. For this reason, it is sufficient to ensure a space for welding only on the terminal side first receiving joint portion side or on the member side first receiving joint portion side. Therefore, the arrangement | positioning space | interval of batteries can be made small and a 1st electrode terminal and a terminal connection member can also be made small.

また、第２電極端子の端側子第２受入接合部を端子接続部材の部材側第２凸接合部に重ねて、端子側第２受入接合部側から端子側第２受入部と部材側第２凸部とを溶接できる。或いは、第２電極端子の端子側第２凸接合部と端子接続部材の部材側第２受入接合部とを重ねて、部材側第２受入接合部側から端子側第２凸部と部材側第２受入部とを溶接できる。このため、端子側第２受入接合部側または部材側第２受入接合部側にのみ溶接のためのスペースを確保すれば足りる。従って、電池同士の配置間隔を小さくし、また、第２電極端子及び端子接続部材も小さくできる。   Also, the end side second receiving joint portion of the second electrode terminal is overlapped on the member side second convex joint portion of the terminal connecting member, and the terminal side second receiving portion and the member side second side from the terminal side second receiving joint portion side. 2 convex portions can be welded. Alternatively, the terminal-side second convex joint portion of the second electrode terminal and the member-side second receiving joint portion of the terminal connecting member are overlapped, and the terminal-side second convex portion and the member-side second side are arranged from the member-side second receiving joint portion side. 2 The receiving part can be welded. For this reason, it is sufficient to secure a space for welding only on the terminal side second receiving joint portion side or the member side second receiving joint portion side. Therefore, the arrangement | positioning space | interval of batteries can be made small, and a 2nd electrode terminal and a terminal connection member can also be made small.

ここで、部材側第１凸部と端子側第１受入部、部材側第１受入部と端子側第１凸部、部材側第２凸部と端子側第２受入部、及び、部材側第２受入部と端子側第２凸部の形態等については、それぞれ前述した凸部及び受入部と同様に考えることができる。また、部材側第１凸接合部と端子側第１受入部、部材側第１受入接合部と端子側第１凸接合部、部材側第２凸接合部と端子側第２受入部、及び、部材側第２受入接合部と端子側第２凸接合部の形態等についても、それぞれ前述した凸接合部及び受入接合部と同様に考えることができる。   Here, the member side first convex portion and the terminal side first receiving portion, the member side first receiving portion and the terminal side first convex portion, the member side second convex portion and the terminal side second receiving portion, and the member side first convex portion. About the form of 2 receiving parts and a terminal side 2nd convex part, it can consider similarly to the convex part and receiving part which were mentioned above, respectively. In addition, the member side first convex joint portion and the terminal side first receiving portion, the member side first receiving joint portion and the terminal side first convex joint portion, the member side second convex joint portion and the terminal side second receiving portion, and The configurations of the member-side second receiving joint and the terminal-side second convex joint can also be considered in the same manner as the convex joint and the receiving joint described above.

更に、上記の電池であって、前記端子側第１凸部及び前記端子側第２凸部の少なくともいずれかは、自身の突出方向から見て、細長い形状とされてなる電池とすると良い。   Furthermore, in the battery described above, it is preferable that at least one of the terminal-side first convex portion and the terminal-side second convex portion is an elongated battery as viewed from the protruding direction thereof.

本発明によれば、端子側第１凸部が細長い形状である場合、第１電極端子と端子接続部材との接合にあたり、端子側第１凸部と部材側第１受入部との溶接距離を長くすることができる。従って、第１電極端子と端子接続部材との接合を強固にすることができる。また、これらの接合部分における電気抵抗を小さくすることができる。また、端子側第２凸部が細長い形状である場合、第２電極端子と端子接続部材との接合にあたり、端子側第２凸部と部材側第２受入部との溶接距離を長くすることができる。従って、第２電極端子と端子接続部材との接合を強固にすることができる。また、これらの接合部分における電気抵抗を小さくすることができる。   According to the present invention, when the terminal-side first convex portion has an elongated shape, the welding distance between the terminal-side first convex portion and the member-side first receiving portion is set in joining the first electrode terminal and the terminal connecting member. Can be long. Accordingly, the bonding between the first electrode terminal and the terminal connection member can be strengthened. Moreover, the electrical resistance in these junction parts can be made small. Further, when the terminal-side second convex portion has an elongated shape, the welding distance between the terminal-side second convex portion and the member-side second receiving portion may be increased in joining the second electrode terminal and the terminal connecting member. it can. Therefore, the bonding between the second electrode terminal and the terminal connection member can be strengthened. Moreover, the electrical resistance in these junction parts can be made small.

更に、上記のいずれかに記載の電池であって、前記第１電極端子は、前記端子接続部材を重ね、前記端子側第１受入部に前記部材側第１凸部を嵌合させた状態で、または、前記端子側第１凸部を前記部材側第１受入部に嵌合させた状態で、前記他の電池との配置方向に直交する方向への移動を規制する一方、前記配置方向への移動を可能とする形態とされてなり、前記第２電極端子は、前記端子接続部材を重ね、前記端子側第２受入部に前記部材側第２凸部を嵌合させた状態で、または、前記端子側第２凸部を前記部材側第２受入部に嵌合させた状態で、前記配置方向に直交する方向への移動を規制する一方、前記配置方向への移動を可能とする形態とされてなる電池とすると良い。   Furthermore, in the battery according to any one of the above, in the state where the first electrode terminal overlaps the terminal connection member and the member-side first convex portion is fitted to the terminal-side first receiving portion. Or, in a state where the terminal-side first convex portion is fitted to the member-side first receiving portion, the movement in the direction orthogonal to the arrangement direction with the other battery is restricted, while in the arrangement direction. The second electrode terminal is in a state where the terminal connection member is overlapped and the member side second convex portion is fitted to the terminal side second receiving portion, or In the state where the terminal side second convex portion is fitted to the member side second receiving portion, the movement in the direction orthogonal to the arrangement direction is restricted while the movement in the arrangement direction is enabled. It is better to use the battery.

本発明によれば、第１電極端子と端子接続部材とは、部材側第１凸部と端子側第１受入部とを嵌合させた状態で、または、部材側第１受入部と端子側第１凸部とを嵌合させた状態で、電池同士の配置方向に直交する方向への移動が規制される一方、電池同士の配置方向への移動が可能となる。このため、第１電極端子と端子接続部材とを接合するに際し、電池の配置方向と直交する方向について、これらを正確に位置決めできる上、電池の配置方向については、位置決めの許容度が大きくなる。このように配置方向について位置決めの許容度が大きいと、個々の電池が有する配置方向の寸法公差を第１電極端子と端子接続部材との間隔を変更することで吸収できる。   According to the present invention, the first electrode terminal and the terminal connecting member are in a state in which the member-side first convex portion and the terminal-side first receiving portion are fitted, or the member-side first receiving portion and the terminal side. While the movement in the direction orthogonal to the arrangement direction of the batteries is restricted with the first convex portion fitted, the movement in the arrangement direction of the batteries is possible. For this reason, when joining a 1st electrode terminal and a terminal connection member, these can be positioned correctly about the direction orthogonal to the arrangement direction of a battery, and the tolerance of positioning becomes large about the arrangement direction of a battery. Thus, when the positioning tolerance is large in the arrangement direction, the dimensional tolerance in the arrangement direction of each battery can be absorbed by changing the interval between the first electrode terminal and the terminal connection member.

また、第２電極端子と端子接続部材とは、部材側第２凸部と端子側第２受入部とを嵌合させた状態で、または、部材側第２受入部と端子側第２凸部とを嵌合させた状態で、電池同士の配置方向に直交する方向への移動が規制される一方、電池同士の配置方向への移動が可能となる。このため、第２電極端子と端子接続部材とを接合するに際し、電池の配置方向と直交する方向について、これらを正確に位置決めできる上、電池の配置方向については、位置決めの許容度が大きくなる。このように配置方向について位置決めの許容度が大きいと、個々の電池が有する配置方向の寸法公差を第２電極端子と端子接続部材との間隔を変更することで吸収できる。   Further, the second electrode terminal and the terminal connecting member are in a state in which the member side second convex portion and the terminal side second receiving portion are fitted, or the member side second receiving portion and the terminal side second convex portion. In a state where the two are fitted together, movement in the direction orthogonal to the arrangement direction of the batteries is restricted, while movement in the arrangement direction of the batteries becomes possible. For this reason, when joining a 2nd electrode terminal and a terminal connection member, these can be correctly positioned about the direction orthogonal to the arrangement direction of a battery, and the tolerance of positioning becomes large about the arrangement direction of a battery. When the positioning tolerance is large in the arrangement direction as described above, the dimensional tolerance in the arrangement direction of each battery can be absorbed by changing the distance between the second electrode terminal and the terminal connection member.

更に、上記のいずれかに記載の電池であって、前記端子側第１受入部または前記端子側第１凸部、及び、前記端子側第２受入部または前記端子側第２凸部は、それぞれ複数形成されてなる電池とすると良い。   Furthermore, in the battery according to any one of the above, the terminal-side first receiving part or the terminal-side first convex part, and the terminal-side second receiving part or the terminal-side second convex part are respectively It is preferable that a plurality of formed batteries be used.

本発明によれば、端子側第１受入部または端子側第１凸部が複数形成されている。このため、端子接続部材に部材側第１凸部または部材側第１受入部が複数形成されていれば、各々の端子側第１受入部と部材側第１凸部、または、各々の端子側第１凸部と部材側第１受入部を溶接できるので、第１電極端子と端子接続部材の接合を更に強固にすることができる。また、第１電極端子と端子接続部材との間の電気抵抗も更に小さくすることができる。   According to the present invention, a plurality of terminal side first receiving portions or terminal side first convex portions are formed. Therefore, if a plurality of member-side first convex portions or member-side first receiving portions are formed on the terminal connection member, each terminal-side first receiving portion and member-side first convex portion, or each terminal side Since the 1st convex part and the member side 1st receiving part can be welded, joining of the 1st electrode terminal and a terminal connection member can be strengthened further. Moreover, the electrical resistance between the first electrode terminal and the terminal connection member can be further reduced.

また、端子側第２受入部または端子側第２凸部が複数形成されている。このため、端子接続部材に部材側第２凸部または部材側第２受入部が複数形成されていれば、各々の端子側第２受入部と部材側第２凸部、または、各々の端子側第２凸部と部材側第２受入部を溶接できるので、第２電極端子と端子接続部材の接合を更に強固にすることができる。また、第２電極端子と端子接続部材との間の電気抵抗も更に小さくすることができる。   A plurality of terminal-side second receiving portions or terminal-side second convex portions are formed. Therefore, if a plurality of member-side second convex portions or member-side second receiving portions are formed on the terminal connection member, each terminal-side second receiving portion and member-side second convex portion, or each terminal side Since the 2nd convex part and the member side 2nd receiving part can be welded, joining of the 2nd electrode terminal and a terminal connection member can be strengthened further. Moreover, the electrical resistance between the second electrode terminal and the terminal connection member can be further reduced.

更に、上記のいずれかに記載の電池であって、前記ケースは、ラミネート樹脂フィルムからなり、前記端子側第１受入接合部は、前記第１電極端子に前記端子接続部材を重ねた状態において、前記部材側第１凸接合部よりも前記ケースから離れて位置する形態とされてなり、または、前記端子側第１凸接合部は、前記第１電極端子に前記端子接続部材を重ねた状態において、前記部材側第１受入接合部よりも前記ケース側に位置する形態とされてなり、前記端子側第２受入接合部は、前記第２電極端子に前記端子接続部材を重ねた状態において、前記部材側第２凸接合部よりも前記ケースから離れて位置する形態とされてなり、または、前記端子側第２凸接合部は、前記第２電極端子に前記端子接続部材を重ねた状態において、前記部材側第２受入接合部よりも前記ケース側に位置する形態とされてなる電池とすると良い。   Furthermore, in the battery according to any one of the above, the case is made of a laminated resin film, and the terminal-side first receiving joint is in a state where the terminal connection member is overlaid on the first electrode terminal. It is configured to be positioned farther from the case than the member-side first convex joint portion, or the terminal-side first convex joint portion is in a state where the terminal connection member is overlaid on the first electrode terminal. In the state where the terminal side second receiving joint portion is overlapped on the second electrode terminal, the terminal side second receiving joint portion is configured to be positioned closer to the case side than the member side first receiving joint portion. It is configured to be located farther from the case than the member-side second convex joint, or the terminal-side second convex joint is in a state where the terminal connection member is overlaid on the second electrode terminal. The member side Than receiving the joint may be a cell formed by a form located on the case side.

本発明では、部材側第１凸接合部と端子側第１受入接合部を重ねて、端子側第１受入接合部側から部材側第１凸部と端子側第１受入部とを溶接する際に、端子側第１受入接合部は、部材側第１凸接合部よりもケースから離れて位置するので、スパッタが部材側第１凸接合部側、即ち、ケース側に飛び散ることが抑制される。或いは、部材側第１受入接合部と端子側第１凸接合部を重ねて、部材側第１受入接合部側から部材側第１受入部と端子側第１凸部とを溶接する際に、部材側第１受入接合部は、端子側第１凸接合部よりもケースから離れて位置するので、スパッタが端子側第１凸接合部側、即ち、ケース側に飛び散ることが抑制される。   In the present invention, the member-side first convex joint and the terminal-side first receiving joint are overlapped, and the member-side first convex and the terminal-side first receiving part are welded from the terminal-side first receiving joint. In addition, since the terminal side first receiving joint portion is located farther from the case than the member side first convex joint portion, it is possible to suppress the spatter from scattering to the member side first convex joint portion side, that is, the case side. . Alternatively, when the member-side first receiving joint and the terminal-side first convex joint are overlapped and the member-side first receiving joint and the terminal-side first convex are welded from the member-side first receiving joint, Since the member side first receiving joint portion is located farther from the case than the terminal side first convex joint portion, it is possible to suppress the spatter from being scattered to the terminal side first convex joint portion side, that is, the case side.

また、部材側第２凸接合部と端子側第２受入接合部を重ねて、端子側第２受入接合部側から部材側第２凸部と端子側第２受入部とを溶接する際に、端子側第２受入接合部は、部材側第２凸接合部よりもケースから離れて位置するので、スパッタが部材側第２凸接合部側、即ち、ケース側に飛び散ることが抑制される。或いは、部材側第２受入接合部と端子側第２凸接合部を重ねて、部材側第２受入接合部側から部材側第２受入部と端子側第２凸部とを溶接する際に、部材側第２受入接合部は、端子側第２凸接合部よりもケースから離れて位置するので、スパッタが端子側第２凸接合部側、即ち、ケース側に飛び散ることが抑制される。従って、スパッタにより電池が破損するのを抑制できる。   Further, when the member-side second convex joint and the terminal-side second receiving joint are overlapped and the member-side second convex and the terminal-side second receiving part are welded from the terminal-side second receiving joint, Since the terminal side second receiving joint portion is located farther from the case than the member side second convex joint portion, it is possible to suppress the spatter from scattering to the member side second convex joint portion side, that is, the case side. Alternatively, when the member-side second receiving joint and the terminal-side second convex joint are overlapped and the member-side second receiving joint and the terminal-side second convex are welded from the member-side second receiving joint, Since the member side second receiving joint portion is located farther from the case than the terminal side second convex joint portion, it is possible to suppress the spatter from being scattered to the terminal side second convex joint portion side, that is, the case side. Therefore, damage to the battery due to sputtering can be suppressed.

また、他の解決手段は、第１電極端子と第２電極端子とを有する電池を複数備え、少なくとも一組の互いに隣り合って配置された電池同士について、一方の電池の前記第１電極端子と他方の電池の前記第２電極端子とを端子接続部材を介して電気的に接続してなる組電池の製造方法であって、前記端子接続部材及び前記第１電極端子は、部材側第１凸部を有する部材側第１凸接合部を備える端子接続部材、及び、前記部材側第１凸接合部と重なる端子側第１受入接合部であって、前記部材側第１凸部と嵌合する貫通孔或いは切り欠きからなる端子側第１受入部を有する端子側第１受入接合部を備える第１電極端子であり、または、貫通孔或いは切り欠きからなる部材側第１受入部を有する部材側第１受入接合部を備える端子接続部材、及び、前記部材側第１受入接合部と重なる端子側第１凸接合部であって、前記部材側第１受入部と嵌合する端子側第１凸部を有する端子側第１凸接合部を備える第１電極端子であり、前記端子接続部材及び前記第２電極端子は、部材側第２凸部を有する部材側第２凸接合部を備える端子接続部材、及び、前記部材側第２凸接合部と重なる端子側第２受入接合部であって、前記部材側第２凸部と嵌合する貫通孔或いは切り欠きからなる端子側第２受入部を有する端子側第２受入接合部を備える第２電極端子であり、または、貫通孔或いは切り欠きからなる部材側第２受入部を有する部材側第２受入接合部を備える端子接続部材、及び、前記部材側第２受入接合部と重なる端子側第２凸接合部であって、前記部材側第２受入部と嵌合する端子側第２凸部を有する端子側第２凸接合部を備える第２電極端子であり、前記部材側第１凸部と前記端子側第１受入部とを嵌合させつつ、前記部材側第１凸接合部と前記端子側第１受入接合部とを重ねてこれらの位置合わせを行う、または、前記部材側第１受入部と前記端子側第１凸部とを嵌合させつつ、前記部材側第１受入接合部と前記端子側第１凸接合部とを重ねてこれらの位置合わせを行うと共に、前記部材側第２凸部と前記端子側第２受入部とを嵌合させつつ、前記部材側第２凸接合部と前記端子側第２受入接合部とを重ねてこれらの位置合わせを行う、または、前記部材側第２受入部と前記端子側第２凸部とを嵌合させつつ、前記部材側第２受入接合部と前記端子側第２凸接合部とを重ねてこれらの位置合わせを行う位置合わせ工程と、前記位置合わせ工程後、前記端子側第１受入接合部側から前記部材側第１凸部と前記端子側第１受入部とを溶接する、または、前記部材側第１受入接合部側から前記部材側第１受入部と前記端子側第１凸部とを溶接すると共に、前記端子側第２受入接合部側から前記部材側第２凸部と前記端子側第２受入部とを溶接する、または、前記部材側第２受入接合部側から前記部材側第２受入部と前記端子側第２凸部とを溶接する溶接工程と、を備える組電池の製造方法である。   Another solution is provided with a plurality of batteries each having a first electrode terminal and a second electrode terminal, and at least one set of the batteries arranged adjacent to each other with the first electrode terminal of one battery. A method of manufacturing an assembled battery in which the second electrode terminal of the other battery is electrically connected via a terminal connecting member, wherein the terminal connecting member and the first electrode terminal are member-side first protrusions. A terminal connecting member having a member-side first convex joint having a portion, and a terminal-side first receiving joint overlapping with the member-side first convex joint, and fitting with the member-side first convex A first electrode terminal having a terminal-side first receiving joint portion having a terminal-side first receiving portion made of a through-hole or a notch, or a member side having a member-side first receiving portion made of a through-hole or a notch A terminal connection member comprising a first receiving joint, and A terminal-side first convex joint that overlaps with the member-side first receiving joint, the terminal-side first convex joint having a terminal-side first convex that fits with the member-side first receiving part. The terminal connection member and the second electrode terminal are a terminal connection member including a member-side second convex joint portion having a member-side second convex portion, and the member-side second convex joint portion. A second electrode provided with a terminal-side second receiving joint portion, which is a terminal-side second receiving joint portion, which is a terminal-side second receiving joint portion that has a terminal-side second receiving portion formed of a through-hole or a notch that fits with the member-side second convex portion A terminal connection member including a member-side second receiving joint portion having a member-side second receiving portion which is a terminal or a through hole or a notch, and a terminal-side second overlapping the member-side second receiving joint portion A terminal-side second convex portion which is a convex joint and is fitted to the member-side second receiving portion It is a 2nd electrode terminal provided with the terminal side 2nd convex junction part which has, The above-mentioned member side 1st convex junction part and the above-mentioned terminal while fitting the above-mentioned member side 1st convex part and the above-mentioned terminal side 1st receiving part The member side first receiving joint portion is overlapped with the side first receiving joint portion, or the member side first receiving joint portion is fitted with the member side first receiving portion and the terminal side first convex portion. The member-side second convex joint portion is overlapped with the terminal-side first convex joint portion to align them, and the member-side second convex portion and the terminal-side second receiving portion are fitted together. And the terminal side second receiving joint portion are overlapped to align them, or the member side second receiving portion and the terminal side second convex portion are fitted together while the member side second receiving portion is fitted. An alignment step of overlapping the bonding portion and the terminal-side second convex bonding portion to align them, and the position After the alignment step, the member-side first convex portion and the terminal-side first receiving portion are welded from the terminal-side first receiving joint portion side, or the member-side first receiving joint portion side is welded to the member-side first receiving portion. Welding the first receiving portion and the terminal side first convex portion, and welding the member side second convex portion and the terminal side second receiving portion from the terminal side second receiving joint portion side, or It is a manufacturing method of an assembled battery provided with the welding process which welds the said member side 2nd receiving part and the said terminal side 2nd convex part from the member side 2nd receiving junction part side.

本発明の組電池の製造方法によれば、位置合わせ工程において、部材側第１凸部と端子側第１受入部とを嵌合させつつ、部材側第１凸接合部と端子側第１受入接合部とを重ねてこれらの位置合わせを行う。または、部材側第１受入部と端子側第１凸部とを嵌合させつつ、部材側第１受入接合部と端子側第１凸接合部とを重ねてこれらの位置合わせを行う。このため、第１電極端子と端子接続部材との位置合わせが容易である。   According to the assembled battery manufacturing method of the present invention, in the alignment step, the member-side first convex joint and the terminal-side first receiving are fitted while the member-side first convex and the terminal-side first receiving are fitted. These positions are aligned by overlapping the joint. Alternatively, the member-side first receiving joint portion and the terminal-side first convex joint portion are overlapped with each other while the member-side first receiving portion and the terminal-side first convex portion are fitted. For this reason, alignment with a 1st electrode terminal and a terminal connection member is easy.

また、この位置合わせ工程において、部材側第２凸部と端子側第２受入部とを嵌合させつつ、部材側第２凸接合部と端子側第２受入接合部とを重ねてこれらの位置合わせを行う。または、部材側第２受入部と端子側第２凸部とを嵌合させつつ、部材側第２受入接合部と端子側第２凸接合部とを重ねてこれらの位置合わせを行う。このため、第２電極端子と端子接続部材との位置合わせも容易である。   Further, in this alignment step, the member-side second convex joint and the terminal-side second receiving joint are overlapped with each other while fitting the member-side second convex and the terminal-side second receiving part. Align. Alternatively, the member-side second receiving joint portion and the terminal-side second convex joint portion are overlapped with each other while the member-side second receiving portion and the terminal-side second convex portion are fitted. For this reason, alignment with a 2nd electrode terminal and a terminal connection member is also easy.

また、本発明の製造方法では、溶接工程において、端子側第１受入接合部側から部材側第１凸部と端子側第１受入部とを溶接する。または、部材側第１受入接合部側から部材側第１受入部と端子側第１凸部と溶接する。このため、端子側第１受入接合部側または部材側第１受入接合部側にのみ溶接のためのスペースを確保すれば足りる。従って、部材側第１凸部と端子側第１受入部とを溶接するためのスペースの確保が容易である。   Moreover, in the manufacturing method of this invention, a member side 1st convex part and a terminal side 1st receiving part are welded from the terminal side 1st receiving joint part side in a welding process. Alternatively, the member-side first receiving portion and the terminal-side first convex portion are welded from the member-side first receiving joint portion side. For this reason, it is sufficient to ensure a space for welding only on the terminal side first receiving joint portion side or on the member side first receiving joint portion side. Therefore, it is easy to secure a space for welding the member-side first convex portion and the terminal-side first receiving portion.

また、この溶接工程において、端子側第２受入接合部側から部材側第２凸部と端子側第２受入部とを溶接する。または、部材側第２受入接合部側から部材側第２受入部と端子側第２凸部と溶接する。このため、端子側第２受入接合部側または部材側第２受入接合部側にのみ溶接のためのスペースを確保すれば足りる。従って、部材側第２凸部と端子側第２受入部とを溶接するためのスペースの確保が容易である。   Moreover, in this welding process, the member side 2nd convex part and the terminal side 2nd receiving part are welded from the terminal side 2nd receiving junction part side. Alternatively, the member side second receiving portion and the terminal side second convex portion are welded from the member side second receiving joint portion side. For this reason, it is sufficient to secure a space for welding only on the terminal side second receiving joint portion side or the member side second receiving joint portion side. Therefore, it is easy to secure a space for welding the member-side second convex portion and the terminal-side second receiving portion.

（実施形態１）
以下、本発明の実施の形態を、図面を参照しつつ説明する。図１に本実施形態１に係る組電池１００のうち、１組の単電池１１０，１４０が互いに隣り合って配置され、電気的に接続された様子を示す。また、図２に互いに接続される正極電極端子１２０及び負極電極端子１６０の一部分の形態を示す。更に、図３に正極電極端子１２０と負極電極端子１６０とを接続した様子を示す。 (Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which a set of single cells 110 and 140 are arranged adjacent to each other and electrically connected in the assembled battery 100 according to the first embodiment. FIG. 2 shows a part of the positive electrode terminal 120 and the negative electrode terminal 160 connected to each other. Further, FIG. 3 shows a state in which the positive electrode terminal 120 and the negative electrode terminal 160 are connected.

この組電池１００は、一列に並んで列置された複数の単電池（電池）１１０，１４０を有する。各々の単電池１１０，１４０は、図示しない公知の電池要素及び電解液をラミネート樹脂フィルムからなるケース１１１で包囲して封止したラミネートセルである。これらの単電池１１０，１４０は、リチウム二次電池である。一方の単電池１１０は、正極電極端子（第２電極端子）１２０と負極電極端子（第１電極端子）１３０とを有する。また、他方の単電池１４０は、正極電極端子（第２電極端子）１５０と負極電極端子（第１電極端子）１６０とを有する。これらのこの単電池１１０は、リチウム二次電池である。   The assembled battery 100 includes a plurality of single cells (batteries) 110 and 140 arranged in a line. Each of the single cells 110 and 140 is a laminate cell in which a well-known battery element (not shown) and an electrolytic solution are surrounded and sealed by a case 111 made of a laminate resin film. These unit cells 110 and 140 are lithium secondary batteries. One unit cell 110 has a positive electrode terminal (second electrode terminal) 120 and a negative electrode terminal (first electrode terminal) 130. The other unit cell 140 includes a positive electrode terminal (second electrode terminal) 150 and a negative electrode terminal (first electrode terminal) 160. These single cells 110 are lithium secondary batteries.

一方の単電池１１０の正極電極端子１２０は、金属板を屈曲加工等することにより形成されている。この正極電極端子１２０は、単電池１１０の一端辺（図１中、上方）から延出する板状の正極第１延出部１２１と、この正極第１延出部１２１の先端部分で直角に屈曲して単電池１１０，１４０同士の配置方向Ｈに延出する板状の正極第２延出部（受入接合部）１２３とを有する。正極第１延出部１２１は、厚さ約１ｍｍ、幅（図１〜図３中、左右方向の長さ）約１０ｍｍ、長さ（図１〜図３中、上下方向の長さ）約１０ｍｍである。   The positive electrode terminal 120 of one unit cell 110 is formed by bending a metal plate or the like. The positive electrode terminal 120 has a plate-like positive first extension part 121 extending from one end side (upward in FIG. 1) of the unit cell 110 and a right end at the tip of the positive first extension part 121. It has a plate-like positive electrode second extending portion (receiving joint portion) 123 that is bent and extends in the arrangement direction H between the single cells 110 and 140. The positive electrode first extension 121 has a thickness of about 1 mm, a width (a length in the left-right direction in FIGS. 1 to 3) of about 10 mm, and a length (a length in the vertical direction in FIGS. 1 to 3) of about 10 mm. It is.

また、正極第２延出部１２３は、厚さ約１ｍｍ、幅（図１〜図３中、左右方向の長さ）約１０ｍｍ、長さ（図１〜図３中、配置方向Ｈの長さ）約１０ｍｍである。正極第２延出部１２３には、配置方向Ｈにこの正極第２延出部１２３の先端まで延びる細長い切り欠きからなる受入部１２５が形成されている。この受入部１２５は、所定の間隔をあけて３つが平行に形成されている。各々の受入部１２５は、幅約２ｍｍ、長さ約５ｍｍである。   The positive electrode second extension 123 has a thickness of about 1 mm, a width (a length in the left-right direction in FIGS. 1 to 3), and a length (a length in the arrangement direction H in FIGS. 1 to 3). ) About 10 mm. The positive electrode second extending portion 123 is formed with a receiving portion 125 formed of an elongated notch extending in the arrangement direction H to the tip of the positive electrode second extending portion 123. Three receiving portions 125 are formed in parallel at a predetermined interval. Each receiving part 125 has a width of about 2 mm and a length of about 5 mm.

他方の単電池１４０の負極電極端子１６０は、金属板を屈曲加工等することにより形成されている。この負極電極端子１６０は、単電池１４０の一端辺（図１中、上方）から延出する板状の負極第１延出部１６１と、この負極第１延出部１６１の先端部分で直角に屈曲して配置方向Ｈに延出する板状の負極第２延出部（凸接合部）１６３とを有する。負極第１延出部１６１は、厚さ約１ｍｍ、幅（図１〜図３中、左右方向の長さ）約１０ｍｍ、長さ（図１〜図３中、上下方向の長さ）約１０ｍｍである。   The negative electrode terminal 160 of the other unit cell 140 is formed by bending a metal plate or the like. The negative electrode terminal 160 has a plate-like negative electrode first extending portion 161 extending from one end side (upward in FIG. 1) of the unit cell 140 and a front end portion of the negative electrode first extending portion 161 at a right angle. It has a plate-like negative electrode second extension part (convex joint part) 163 that bends and extends in the arrangement direction H. The negative electrode first extension 161 has a thickness of about 1 mm, a width (a length in the left-right direction in FIGS. 1 to 3) of about 10 mm, and a length (a length in the vertical direction in FIGS. 1 to 3) of about 10 mm. It is.

また、負極第２延出部１６３は、前述した正極第２延出部１２３とは反対方向に延出している。この負極第２延出部１６３は、後述する凸部１６５を除くと、厚さ約１ｍｍ、幅（図１〜図３中、左右方向の長さ）約１０ｍｍ、長さ（図１〜図３中、配置方向Ｈの長さ）約１０ｍｍである。負極第２延出部１６３には、ケース１１１から離れる方向に突出すると共に、配置方向Ｈにこの負極第２延出部１６３の先端まで延びる凸部１６５が形成されている。この凸部１６５は、その突出方向から見て細長い形状をなし、所定の間隔をあけて３つが平行に形成されている。各々の凸部１６５は、幅約２ｍｍ、高さ約２ｍｍ、長さ約７ｍｍである。   Moreover, the negative electrode 2nd extension part 163 is extended in the opposite direction to the positive electrode 2nd extension part 123 mentioned above. This negative electrode 2nd extension part 163 is about 1 mm in thickness (length in the left-right direction in FIGS. 1-3), and length (FIGS. 1-3) except the convex part 165 mentioned later. Middle, length in the arrangement direction H) is about 10 mm. The negative electrode second extending portion 163 is formed with a convex portion 165 that protrudes in a direction away from the case 111 and extends in the arrangement direction H to the tip of the negative electrode second extending portion 163. The projections 165 have an elongated shape when viewed from the protruding direction, and three are formed in parallel at a predetermined interval. Each protrusion 165 has a width of about 2 mm, a height of about 2 mm, and a length of about 7 mm.

組電池１００において、互いに隣り合って配置された単電池１１０，１４０は、一方の単電池１１０の正極電極端子１２０と他方の単電池１４０の負極電極端子１６０とが、互いに電気的に接続されている。具体的には、正極電極端子１２０の正極第２延出部１２３と負極電極端子１６０の負極第２延出部１６３とが重なり、正極第２延出部１２３に設けられた３つの受入部１２５と負極第２延出部１６３に設けられた３つの凸部１６５とが嵌合した状態で、各々の受入部１２５と凸部１６５とが溶接により接合している（図３参照）。この溶接部分は、受入部１２５と凸部１６５とが嵌合する部位について、配置方向Ｈに沿って形成されている。なお、正極第２延出部１２３と負極第２延出部１６３とが重なった状態で、正極第２延出部１２３がケース１１１から離れる側、負極第２延出部１６３がケース１１１側に位置する。   In the assembled battery 100, the unit cells 110 and 140 arranged adjacent to each other are configured such that the positive electrode terminal 120 of one unit cell 110 and the negative electrode terminal 160 of the other unit cell 140 are electrically connected to each other. Yes. Specifically, the positive electrode second extension portion 123 of the positive electrode terminal 120 and the negative electrode second extension portion 163 of the negative electrode terminal 160 overlap, and three receiving portions 125 provided in the positive electrode second extension portion 123 are overlapped. Each receiving part 125 and the convex part 165 are joined by welding in a state where the three convex parts 165 provided on the negative electrode second extension part 163 are fitted (see FIG. 3). This welded portion is formed along the arrangement direction H at a portion where the receiving portion 125 and the convex portion 165 are fitted. In the state where the positive electrode second extension portion 123 and the negative electrode second extension portion 163 overlap each other, the positive electrode second extension portion 123 is away from the case 111, and the negative electrode second extension portion 163 is on the case 111 side. To position.

次いで、上記組電池１００の製造方法について説明する。
まず、公知のラミネートセルの製造方法により、単電池１１０，１４０を製造する。なお、正極電極端子１２０，１５０は、所定形状の金属板を用意し、パンチング等で受入部１２５となる３つの切り欠きを設け、更に屈曲加工を行って形成すればよい。また、負極電極端子１３０，１６０は、所定形状の金属板を用意し、プレス等で３つの凸部１６５を設け、更に屈曲加工を行って形成すればよい。 Next, a method for manufacturing the assembled battery 100 will be described.
First, the cells 110 and 140 are manufactured by a known laminate cell manufacturing method. The positive electrode terminals 120 and 150 may be formed by preparing a metal plate having a predetermined shape, providing three notches serving as the receiving portions 125 by punching or the like, and further performing bending. The negative electrode terminals 130 and 160 may be formed by preparing a metal plate having a predetermined shape, providing three convex portions 165 with a press or the like, and further performing bending.

なお、正極電極端子１２０（１５０）は、これを構成する正極第１延出部１２１と正極第２延出部１２３をそれぞれ別部材で構成し、溶接により正極電極端子１２０（１５０）を形成するようにしてもよい。同様に、負極電極端子１３０（１６０）も、これを構成する負極第１延出部１６１と負極第２延出部１６３をそれぞれ別部材で構成し、溶接により負極電極端子１３０（１６０）を形成するようにしてもよい。   In addition, the positive electrode terminal 120 (150) comprises the positive electrode 1st extension part 121 and the positive electrode 2nd extension part 123 which comprise this by a separate member, respectively, and forms the positive electrode terminal 120 (150) by welding. You may do it. Similarly, also in the negative electrode terminal 130 (160), the negative electrode first extending portion 161 and the negative electrode second extending portion 163 constituting the negative electrode terminal 130 (160) are formed of separate members, and the negative electrode terminal 130 (160) is formed by welding. You may make it do.

次に、位置合わせ工程において、単電池１１０，１４０同士を互いに隣り合わせに配置し、一方の単電池１１０の正極電極端子１２０の受入部１２５と隣り合う他方の単電池１４０の負極電極端子１６０の凸部１６５とを嵌合させつつ、受入部１２５が設けられた正極第２延出部１２３と凸部１６５が設けられた負極第２延出部１６３とを重ねて、これらの位置合わせを行う。   Next, in the alignment step, the cells 110 and 140 are arranged next to each other, and the convex portion of the negative electrode terminal 160 of the other unit cell 140 adjacent to the receiving portion 125 of the positive electrode terminal 120 of the one unit cell 110 is arranged. While fitting the portion 165, the positive electrode second extending portion 123 provided with the receiving portion 125 and the negative electrode second extending portion 163 provided with the convex portion 165 are overlapped to align them.

その際、正極電極端子１２０の受入部１２５と負極電極端子１６０の凸部１６５とが嵌合しているので、正極電極端子１２０と負極電極端子１６０の位置決めが容易である。
また、各々の受入部１２５及び凸部１６５は、前述したように、配置方向Ｈに沿って形成されている。このため、正極電極端子１２０と負極電極端子１６０とは、受入部１２５と凸部１６５とを嵌合させた状態で、配置方向Ｈに直交する方向（正極電極端子１２０と負極電極端子１３０とが並ぶ端子並び方向Ｌや、図１〜図３中、上下方向など）への移動が規制される一方、配置方向Ｈへの移動が可能となる。よって、配置方向Ｈに直交する方向について、正極電極端子１２０と負極電極端子１６０とを正確に位置決めできる上、配置方向Ｈについては、位置決めの許容度が大きくなる。このように配置方向Ｈについて位置決めの許容度が大きいと、個々の単電池１１０，１４０が有する配置方向Ｈの寸法公差を正極電極端子１２０と負極電極端子１６０との間隔を変更することで吸収できる。 At this time, since the receiving portion 125 of the positive electrode terminal 120 and the convex portion 165 of the negative electrode terminal 160 are fitted, the positioning of the positive electrode terminal 120 and the negative electrode terminal 160 is easy.
Moreover, each receiving part 125 and the convex part 165 are formed along the arrangement direction H as described above. For this reason, the positive electrode terminal 120 and the negative electrode terminal 160 are in a state perpendicular to the arrangement direction H (the positive electrode terminal 120 and the negative electrode terminal 130 are in a state where the receiving portion 125 and the convex portion 165 are fitted. While movement in the terminal arrangement direction L and the vertical direction in FIGS. 1 to 3 is restricted, movement in the arrangement direction H is possible. Therefore, the positive electrode terminal 120 and the negative electrode terminal 160 can be accurately positioned in the direction orthogonal to the arrangement direction H, and the positioning tolerance is increased in the arrangement direction H. As described above, when the positioning tolerance in the arrangement direction H is large, the dimensional tolerance in the arrangement direction H of the individual cells 110 and 140 can be absorbed by changing the interval between the positive electrode terminal 120 and the negative electrode terminal 160. .

次に、溶接工程において、負極第２延出部１６３側からレーザや電子ビーム等を照射し、嵌合した受入部１２５と凸部１６５とを配置方向Ｈに沿ってそれぞれ溶接する。   Next, in the welding process, a laser beam, an electron beam, or the like is irradiated from the negative electrode second extension portion 163 side, and the received receiving portion 125 and the convex portion 165 are welded along the arrangement direction H, respectively.

この溶接では、負極第２延出部１６３側から受入部１２５と凸部１６５とを溶接するので、負極第２延出部１６３側、即ち、図１〜図３中、上方にのみ溶接のためのスペースを確保すれば足り、正極第２延出部１２３側には、大きなスペースが必要ない。従って、単電池１１０，１４０同士の配置間隔を小さくし、また、正極電極端子１２０及び負極電極端子１６０を小さくしても、溶接のためのスペースを容易に確保できる。   In this welding, since the receiving part 125 and the convex part 165 are welded from the negative electrode second extension part 163 side, welding is performed only on the negative electrode second extension part 163 side, that is, upward in FIGS. It is sufficient to secure this space, and no large space is required on the positive electrode second extending portion 123 side. Therefore, even if the arrangement interval between the single cells 110 and 140 is reduced and the positive electrode terminal 120 and the negative electrode terminal 160 are reduced, a space for welding can be easily secured.

また、この溶接工程では、正極第２延出部１２３と負極第２延出部１６３とを重ねた状態で、負極第２延出部１６３側（図１〜図３中、上方）から受入部１６５と凸部１２５とを溶接するので、溶接時のスパッタが正極第２延出部１２３側に飛散するのを抑制できる。従って、スパッタにより単電池１１０，１４０が破損することを抑制できる。特に、これらの単電池１１０，１４０は、前述したように、ラミネートセルであるために、スパッタにより破損しやすいので、スパッタを抑制することで歩留まりを効果的に向上させることができる。   Moreover, in this welding process, in the state which piled up the positive electrode 2nd extension part 123 and the negative electrode 2nd extension part 163, it received from the negative electrode 2nd extension part 163 side (FIG. 1-3 upper part). Since 165 and the convex part 125 are welded, it can suppress that the spatter | spatter at the time of welding scatters to the positive electrode 2nd extension part 123 side. Therefore, it is possible to prevent the single cells 110 and 140 from being damaged by sputtering. In particular, since the single cells 110 and 140 are laminate cells as described above, they are easily damaged by sputtering, and thus the yield can be effectively improved by suppressing sputtering.

また、本実施形態１では、前述したように、凸部１６５がその突出方向から見て細長い形状をなす。そして、溶接工程では、嵌合した受入部１２５と凸部１６５を配置方向Ｈに沿って溶接するので、受入部１２５と凸部１６５との溶接距離が長くなる。従って、正極電極端子１２０と負極電極端子１６０との接合強度が大きくなる。また、溶接部分における電気抵抗が小さくなる。特に、本実施形態１では、受入部１２５及び凸部１６５を３つ形成し、これらをそれぞれ溶接しているので、正極電極端子１２０と負極電極端子１６０との接合強度が大きくなり、また、電気抵抗が小さくなる。   In the first embodiment, as described above, the convex portion 165 has an elongated shape when viewed from the protruding direction. And in a welding process, since the fitting receiving part 125 and the convex part 165 are welded along the arrangement direction H, the welding distance of the receiving part 125 and the convex part 165 becomes long. Accordingly, the bonding strength between the positive electrode terminal 120 and the negative electrode terminal 160 is increased. Moreover, the electrical resistance in the welded portion is reduced. In particular, in the first embodiment, since the receiving portion 125 and the three convex portions 165 are formed and welded to each other, the bonding strength between the positive electrode terminal 120 and the negative electrode terminal 160 is increased, Resistance becomes smaller.

溶接工程により単電池１１０，１４０同士を接続した後は、公知の手法により、図示しない外装部材等を組み付けて、組電池１００を完成させる。   After the cells 110 and 140 are connected to each other by the welding process, an assembled member 100 (not shown) is assembled by a known method to complete the assembled battery 100.

（実施形態２）
次いで、第２の実施形態について説明する。なお、上記実施形態１と同様な部分の説明は、省略または簡略化する。図４に本実施形態２に係る組電池２００のうち、１組の単電池２１０，２４０が互いに隣り合って配置され、電気的に接続された様子を示す。また、図５に正極電極端子２２０及び負極電極端子２６０の一部分の形態を示す。更に、図６に正極電極端子２２０と負極電極端子２６０を接続した様子を示す。 (Embodiment 2)
Next, a second embodiment will be described. Note that the description of the same parts as those in the first embodiment is omitted or simplified. FIG. 4 shows a state where one set of unit cells 210 and 240 are arranged adjacent to each other and electrically connected in the assembled battery 200 according to the second embodiment. FIG. 5 shows a part of the positive electrode terminal 220 and the negative electrode terminal 260. Further, FIG. 6 shows a state in which the positive electrode terminal 220 and the negative electrode terminal 260 are connected.

本実施形態２の組電池２００は、単電池２１０，２４０同士が端子接続部材２７０を介して電気的に接続されている点が、単電池１１０，１４０同士を直接接続している上記実施形態１の組電池１００と異なる。また、正極電極端子２２０，２５０及び負極電極端子２３０，２６０の形態も、上記実施形態１の正極電極端子１２０，１５０及び負極電極端子１３０，１６０と異なる。それ以外は、上記実施形態１と概略同様である。   In the assembled battery 200 of the second embodiment, the unit cells 210 and 240 are electrically connected to each other via the terminal connection member 270, and the unit cells 110 and 140 are directly connected to each other. Different from the assembled battery 100 of FIG. The forms of the positive electrode terminals 220 and 250 and the negative electrode terminals 230 and 260 are also different from the positive electrode terminals 120 and 150 and the negative electrode terminals 130 and 160 of the first embodiment. Other than that, it is substantially the same as the first embodiment.

組電池２００を構成する各々の単電池２１０，２４０は、正極電極端子（第２電極端子）２２０，２５０と負極電極端子（第１電極端子）２３０，２６０とを有する。
一方の単電池２１０の正極電極端子２２０は、単電池２１０の一端辺（図４中、上方）から延出する板状の正極第１延出部２２１と、この正極第１延出部２２１の先端部分で直角に屈曲して単電池２１０，２４０の配置方向Ｈに延出する板状の正極第２延出部（端子側第２受入接合部）２２３とを有する。正極第２延出部２２３には、配置方向Ｈにこの正極第２延出部２２３の先端まで延びる細長い切り欠きからなる第１受入部（端子側第２受入部）２２５が形成されている。この第１受入部２２５は、所定の間隔をあけて２つが平行に形成されている。 Each of the single cells 210 and 240 constituting the assembled battery 200 has positive electrode terminals (second electrode terminals) 220 and 250 and negative electrode terminals (first electrode terminals) 230 and 260.
The positive electrode terminal 220 of one unit cell 210 includes a plate-like positive electrode first extension 221 extending from one end side (upward in FIG. 4) of the unit cell 210, and the positive electrode first extension 221. It has a plate-like positive electrode second extension portion (terminal side second receiving joint portion) 223 that is bent at a right angle at the tip portion and extends in the arrangement direction H of the cells 210 and 240. The positive electrode second extending portion 223 is formed with a first receiving portion (terminal-side second receiving portion) 225 formed of an elongated notch extending in the arrangement direction H to the tip of the positive electrode second extending portion 223. The two first receiving portions 225 are formed in parallel at a predetermined interval.

また、他方の単電池２４０の負極電極端子２６０は、単電池２４０の一端辺（図４中、上方）から延出する板状の負極第１延出部２６１と、この負極第１延出部２６１の先端部分で直角に屈曲して配置方向Ｈに延出する板状の負極第２延出部（端子側第１受入接合部）２６３とを有する。負極第２延出部２６３には、配置方向Ｈにこの負極第２延出部２６３の先端まで延びる細長い切り欠きからなる第２受入部（端子側第１受入部）２６５が形成されている。この第２受入部２６５は、所定の間隔をあけて２つが平行に形成されている。   Further, the negative electrode terminal 260 of the other unit cell 240 includes a plate-like negative electrode first extension portion 261 extending from one end side (upward in FIG. 4) of the unit cell 240, and the negative electrode first extension portion. And a plate-like negative electrode second extending portion (terminal-side first receiving joint portion) 263 that is bent at a right angle at the tip portion of the H.261 and extends in the arrangement direction H. The negative electrode second extending portion 263 is formed with a second receiving portion (terminal-side first receiving portion) 265 made of an elongated notch extending in the arrangement direction H to the tip of the negative electrode second extending portion 263. The second receiving portion 265 is formed in parallel with a predetermined interval.

次に、端子接続部材２７０について説明する。この端子接続部材２７０は、金属からなり、板状に延びる部材第１延出部（部材側第２凸接合部）２７１と、この部材第１延出部２７１とは反対方向に板状に延びる部材第２延出部（部材側第１凸接合部）２７３と、部材第１延出部２７１と部材第２延出部２７３との間に位置する部材中間部２７５とを有する。部材第１延出部２７１及び部材第２延出部２７３は、後述する第１凸部２７７及び第２凸部２７９を除くと、それぞれ厚さ約１ｍｍ、幅（図４〜図６中、左右方向の長さ）約１０ｍｍ、長さ（図４〜図６中、配置方向Ｈの長さ）約１０ｍｍである。   Next, the terminal connection member 270 will be described. The terminal connecting member 270 is made of metal and extends in a plate shape in a direction opposite to the member first extending portion (member-side second convex joint portion) 271 extending in a plate shape and the member first extending portion 271. It has the member 2nd extension part (member side 1st convex junction part) 273, and the member intermediate part 275 located between the member 1st extension part 271 and the member 2nd extension part 273. The member first extending portion 271 and the member second extending portion 273 are each about 1 mm in thickness and width (left and right in FIGS. 4 to 6), excluding the first protruding portion 277 and the second protruding portion 279 described later. The length in the direction is about 10 mm, and the length (the length in the arrangement direction H in FIGS. 4 to 6) is about 10 mm.

部材第１延出部２７１には、配置方向Ｈにこの部材第１延出部２７１の先端まで延びる第１凸部（部材側第２凸部）２７７が形成されている。この第１凸部２７７は、その突出方向から見て細長い形状をなし、所定の間隔をあけて２つが平行に形成されている。また、部材第２延出部２７３には、配置方向Ｈにこの部材第２延出部２７３の先端まで延びる第２凸部（部材側第１凸部）２７９が形成されている。この第２凸部２７９も、その突出方向から見て細長い形状をなし、所定の間隔をあけて２つが平行に形成されている。これら第１凸部２７７及び第２凸部２７９は、正極電極端子２２０及び負極第２電極端子２６０に端子接続部材２７０を重ねた状態において、単電池２１０，２４０のケースから離れる方向（図４〜図６中、上方）に突出している。第１凸部２７７及び第２凸部２７９は、それぞれ幅約２ｍｍ、高さ約１ｍｍ、長さ約４ｍｍである。   The member first extending portion 271 is formed with a first convex portion (member-side second convex portion) 277 extending in the arrangement direction H to the tip of the member first extending portion 271. The first protrusions 277 have an elongated shape when viewed from the protruding direction, and two are formed in parallel at a predetermined interval. The member second extending portion 273 is formed with a second convex portion (member-side first convex portion) 279 extending in the arrangement direction H to the tip of the member second extending portion 273. The second convex portion 279 also has an elongated shape when viewed from the protruding direction, and two are formed in parallel at a predetermined interval. The first convex portion 277 and the second convex portion 279 are separated from the case of the unit cells 210 and 240 when the terminal connecting member 270 is overlapped on the positive electrode terminal 220 and the negative second electrode terminal 260 (FIG. 4 to FIG. 4). It protrudes upward in FIG. The 1st convex part 277 and the 2nd convex part 279 are about 2 mm in width, about 1 mm in height, and about 4 mm in length, respectively.

組電池２００において、互いに隣り合って配置された単電池２１０，２４０は、一方の単電池２１０の正極電極端子２２０と他方の単電池２４０の負極電極端子２６０とが、端子接続部材２７０を介して電気的に接続されている。具体的には、正極電極端子２２０の正極第２延出部２２３と端子接続部材２７０の部材第１延出部２７１とが重なり、正極第２延出部２２３に設けられた２つの第１受入部２２５と部材第１延出部２７１に設けられた２つの第１凸部２７７とが嵌合した状態で、各々の第１受入部２２５と第１凸部２７７とが溶接により接合している（図６参照）。この溶接部分は、第１受入部２２５と第１凸部２７７とが嵌合する部位について、配置方向Ｈに沿って形成されている。なお、正極第２延出部２２３と部材第１延出部２７１とが重なった状態で、正極第２延出部２２３がケースから離れる側、部材第１延出部２７１がケース側に位置する。   In the assembled battery 200, the unit cells 210 and 240 arranged adjacent to each other include a positive electrode terminal 220 of one unit cell 210 and a negative electrode terminal 260 of the other unit cell 240 via a terminal connection member 270. Electrically connected. Specifically, the positive first extension portion 223 of the positive electrode terminal 220 and the member first extension portion 271 of the terminal connection member 270 overlap with each other, and two first receiving portions provided in the positive second extension portion 223 are provided. The first receiving portion 225 and the first convex portion 277 are joined by welding in a state where the first convex portion 277 provided on the member 225 and the member first extending portion 271 are fitted. (See FIG. 6). This welded portion is formed along the arrangement direction H at a portion where the first receiving portion 225 and the first convex portion 277 are fitted. In addition, in a state where the positive electrode second extension portion 223 and the member first extension portion 271 overlap, the positive electrode second extension portion 223 is located on the side away from the case, and the member first extension portion 271 is located on the case side. .

また、負極電極端子２６０の負極第２延出部２６３と端子接続部材２７０の部材第２延出部２７３とが重なり、負極第２延出部２６３に設けられた２つの第２受入部２６５と部材第２延出部２７３に設けられた２つの第２凸部２７９とが嵌合した状態で、各々の第２受入部２６５と第２凸部２７９とが溶接により接合している。この溶接部分も、第２受入部２６５と第２凸部２７９が嵌合する部位について、配置方向Ｈに沿って形成されている。なお、負極第２延出部２６３と部材第２延出部２７３とが重なった状態で、負極第２延出部２６３がケースから離れる側、部材第２延出部２７３がケース側に位置する。   Also, the negative electrode second extension 263 of the negative electrode terminal 260 and the member second extension 273 of the terminal connection member 270 overlap with each other, and two second receiving portions 265 provided on the negative electrode second extension 263, In a state where the two second convex portions 279 provided on the member second extending portion 273 are fitted, each second receiving portion 265 and the second convex portion 279 are joined by welding. This welded portion is also formed along the arrangement direction H at a portion where the second receiving portion 265 and the second convex portion 279 are fitted. In addition, in a state where the negative electrode second extension portion 263 and the member second extension portion 273 overlap, the negative electrode second extension portion 263 is located on the side away from the case, and the member second extension portion 273 is located on the case side. .

次いで、上記組電池２００の製造方法について説明する。
まず、公知のラミネートセルの製造方法により、各単電池２１０，２４０を製造する。また、プレス成形等の公知の手法により製造した端子接続部材２７０を用意する。 Next, a method for manufacturing the assembled battery 200 will be described.
First, the single cells 210 and 240 are manufactured by a known laminate cell manufacturing method. Moreover, the terminal connection member 270 manufactured by well-known methods, such as press molding, is prepared.

そして、位置合わせ工程において、単電池２１０，２４０同士を互いに隣り合わせに配置し、一方の単電池２１０の正極電極端子２２０の第１受入部２２５と端子接続部材２７０の第１凸部２７７とを嵌合させつつ、第１受入部２２５が設けられた正極第２延出部２２３と第１凸部２７７が設けられた部材第１延出部２７１とを重ねて、これらの位置合わせを行う。またこれと共に、これと隣り合う他方の単電池２４０の負極電極端子２６０の第２受入部２６５と端子接続部材２７０の第２凸部２７９とを嵌合させつつ、第２受入部２６５が設けられた負極第２延出部２６３と第２凸部２７９が設けられた部材第２延出部２７３とを重ねて、これらの位置合わせを行う。   Then, in the alignment step, the single cells 210 and 240 are arranged adjacent to each other, and the first receiving portion 225 of the positive electrode terminal 220 of one of the single cells 210 and the first convex portion 277 of the terminal connection member 270 are fitted. The positive electrode 2nd extending part 223 provided with the 1st receiving part 225 and the member 1st extending part 271 provided with the 1st convex part 277 are piled up and aligning these, combining. Along with this, the second receiving portion 265 is provided while fitting the second receiving portion 265 of the negative electrode terminal 260 of the other unit cell 240 adjacent thereto and the second convex portion 279 of the terminal connecting member 270. Further, the negative electrode second extending portion 263 and the member second extending portion 273 provided with the second convex portion 279 are overlapped to align them.

その際、正極電極端子２２０の第１受入部２２５と端子接続部材２７０の第１凸部２７７が嵌合しているので、正極電極端子２２０と端子接続部材２７０との位置決めが容易である。また、負極電極端子２６０の第２受入部２６５と端子接続部材２７０の第２凸部２７９が嵌合しているので、負極電極端子２６０と端子接続部材２７０との位置決めも容易である。   At this time, since the first receiving portion 225 of the positive electrode terminal 220 and the first convex portion 277 of the terminal connection member 270 are fitted, the positioning of the positive electrode terminal 220 and the terminal connection member 270 is easy. Moreover, since the 2nd receiving part 265 of the negative electrode terminal 260 and the 2nd convex part 279 of the terminal connection member 270 are fitting, positioning with the negative electrode terminal 260 and the terminal connection member 270 is also easy.

また、各々の第１受入部２２５及び第１凸部２７７は、前述したように、配置方向Ｈに沿って形成されている。このため、正極電極端子２２０と端子接続部材２７０とは、第１受入部２２５と第１凸部２７７とを嵌合させた状態で、配置方向Ｈに直交する方向への移動が規制される一方、配置方向Ｈへの移動が可能となる。よって、配置方向に直交する方向について、正極電極端子２２０と端子接続部材２７０とを正確に位置決めできる上、配置方向Ｈについては、位置決めの許容度が大きくなる。このように配置方向Ｈについて位置決めの許容度が大きいと、個々の単電池２１０，２４０が有する配置方向Ｈの寸法公差を正極電極端子２２０と端子接続部材２７０との間隔を変更することで吸収できる。   In addition, each first receiving portion 225 and first convex portion 277 are formed along the arrangement direction H as described above. For this reason, the positive electrode terminal 220 and the terminal connection member 270 are restricted from moving in the direction orthogonal to the arrangement direction H in a state where the first receiving portion 225 and the first convex portion 277 are fitted. The movement in the arrangement direction H is possible. Therefore, the positive electrode terminal 220 and the terminal connection member 270 can be accurately positioned in the direction orthogonal to the arrangement direction, and the positioning tolerance is increased in the arrangement direction H. When the positioning tolerance in the arrangement direction H is large as described above, the dimensional tolerance in the arrangement direction H of the individual cells 210 and 240 can be absorbed by changing the interval between the positive electrode terminal 220 and the terminal connection member 270. .

また、各々の第２受入部２６５及び第２凸部２７９も、前述したように、配置方向Ｈに沿って形成されている。このため、負極電極端子２６０と端子接続部材２７０とは、第２受入部２６５と第２凸部２７９とを嵌合させた状態で、配置方向Ｈと直交する方向への移動が規制される一方、配置方向Ｈへの移動が可能となる。よって、配置方向Ｈと直交する方向について、負極電極端子２６０と端子接続部材２７０とを正確に位置決めできる上、配置方向Ｈについては、位置決めの許容度が大きくなる。このように配置方向Ｈについて位置決めの許容度が大きいと、個々の単電池２１０，２４０が有する配置方向の寸法公差を負極電極端子２６０と端子接続部材２７０との間隔を変更することでも吸収できる。   Each of the second receiving portions 265 and the second convex portions 279 is also formed along the arrangement direction H as described above. For this reason, the negative electrode terminal 260 and the terminal connecting member 270 are restricted from moving in a direction orthogonal to the arrangement direction H in a state where the second receiving portion 265 and the second convex portion 279 are fitted. The movement in the arrangement direction H is possible. Therefore, the negative electrode terminal 260 and the terminal connection member 270 can be accurately positioned in the direction orthogonal to the arrangement direction H, and the positioning tolerance is increased in the arrangement direction H. When the positioning tolerance in the arrangement direction H is large as described above, the dimensional tolerance in the arrangement direction of the individual cells 210 and 240 can be absorbed by changing the interval between the negative electrode terminal 260 and the terminal connection member 270.

次に、溶接工程において、正極第２延出部２２３側からレーザや電子ビームを照射し、嵌合した第１受入部２２５と第１凸部２７７とを配置方向Ｈに沿ってそれぞれ溶接する。また、負極第２延出部２６３側からレーザや電子ビームを照射し、嵌合した第２受入部２６５と第２凸部２７９とを配置方向Ｈに沿ってそれぞれ溶接する。   Next, in the welding step, a laser or electron beam is irradiated from the positive electrode second extending portion 223 side, and the fitted first receiving portion 225 and the first convex portion 277 are welded along the arrangement direction H, respectively. Further, a laser beam or an electron beam is irradiated from the negative electrode second extending portion 263 side, and the fitted second receiving portion 265 and second convex portion 279 are welded along the arrangement direction H, respectively.

この溶接では、正極第２延出部２２３側から第１受入部２２５と第１凸部２７７を溶接し、負極第２延出部２６３側から第２受入部２６５と第２凸部２７９を溶接するので、正極第２延出部２２３側及び負極第２延出部２６３側、即ち、図４〜図６中、上方にのみ溶接のためのスペースを確保すれば足りる。従って、単電池２１０，２４０同士の配置間隔を小さくし、また、正極電極端子２２０、負極電極端子２６０及び端子接続部材２７０を小さくしても、溶接のためのスペースを容易に確保できる。   In this welding, the first receiving portion 225 and the first convex portion 277 are welded from the positive electrode second extending portion 223 side, and the second receiving portion 265 and the second convex portion 279 are welded from the negative electrode second extending portion 263 side. Therefore, it is sufficient to secure a space for welding only on the positive electrode second extending portion 223 side and the negative electrode second extending portion 263 side, that is, in the upper side in FIGS. Therefore, even if the arrangement interval between the single cells 210 and 240 is reduced and the positive electrode terminal 220, the negative electrode terminal 260, and the terminal connection member 270 are reduced, a space for welding can be easily secured.

また、この溶接工程では、正極第２延出部２２３と部材第１延出部２７１とを重ねると共に、負極第２延出部２６３と部材第２延出部２７３とを重ねた状態で、正極第２延出部２２３側から第１受入部２２５と第１凸部２７７とを溶接すると共に、負極第２延出部２６３側から第２受入部２６５と第２凸部２７９とを溶接する。このため、溶接時のスパッタが部材第１延出部２７１及び部材第２延出部２７３側に飛散しにくい。従って、スパッタにより単電池２１０，２４０が破損することを抑制できる。   Further, in this welding process, the positive electrode second extending portion 223 and the member first extending portion 271 are stacked, and the negative electrode second extending portion 263 and the member second extending portion 273 are stacked. While welding the 1st receiving part 225 and the 1st convex part 277 from the 2nd extension part 223 side, the 2nd receiving part 265 and the 2nd convex part 279 are welded from the negative electrode 2nd extension part 263 side. For this reason, the spatter | spatter at the time of welding is hard to scatter to the member 1st extension part 271 and the member 2nd extension part 273 side. Therefore, it is possible to prevent the single cells 210 and 240 from being damaged by sputtering.

また、本実施形態２では、前述したように、第１凸部２７７及び第２凸部２７９がその突出方向から見て細長い形状をなす。そして、溶接工程では、嵌合した第１受入部２２５及び第１凸部２７７と、嵌合した第２受入部２６５及び第２凸部２７９を、それぞれ配置方向Ｈに沿って溶接するので、第１受入部２２５と第１凸部２７７、第２受入部２６５と第２凸部２７９の溶接距離がそれぞれ長くなる。従って、正極電極端子２２０と端子接続部材２７０、負極電極端子２６０と端子接続部材２７０の接合強度がそれぞれ大きくなる。また、溶接部分における電気抵抗が小さくなる。   In the second embodiment, as described above, the first convex portion 277 and the second convex portion 279 are elongated when viewed from the protruding direction. In the welding process, the fitted first receiving portion 225 and the first convex portion 277 and the fitted second receiving portion 265 and the second convex portion 279 are welded along the arrangement direction H, respectively. The welding distance between the first receiving portion 225 and the first convex portion 277, and the second receiving portion 265 and the second convex portion 279 is increased. Accordingly, the bonding strengths of the positive electrode terminal 220 and the terminal connection member 270, and the negative electrode terminal 260 and the terminal connection member 270 are increased. Moreover, the electrical resistance in the welded portion is reduced.

溶接工程により単電池２１０，２４０同士を接続した後は、公知の手法により、図示しない外装部材等を組み付けて、組電池２００を完成させる。なお、その他、上記実施形態１と同様な部分は、同様な作用効果を奏する。   After the unit cells 210 and 240 are connected to each other by the welding process, the assembled battery 200 is completed by assembling an exterior member (not shown) by a known method. In addition, the same part as the said Embodiment 1 has the same effect.

（実施形態３）
次いで、第３の実施形態について説明する。なお、上記実施形態１または２と同様な部分の説明は、省略または簡略化する。図７に本実施形態３に係る組電池３００のうち、１組の単電池３１０，３４０が互いに隣り合って配置され、電気的に接続された様子を示す。また、図８に正極電極端子３２０及び負極電極端子３６０の一部分の形態を示す。更に、図９に正極電極端子３２０と負極電極端子３６０を接続した様子を示す。本実施形態３の組電池３００は、正極電極端子３２０，３５０及び負極電極端子３３０，３６０の形態と、端子接続部材３７０の形態が、上記実施形態２の正極電極端子２２０，２５０、負極電極端子２３０，２６０及び端子接続部材２７０と異なる。それ以外は、上記実施形態２と概略同様である。 (Embodiment 3)
Next, a third embodiment will be described. Note that description of the same parts as those in the first or second embodiment is omitted or simplified. FIG. 7 shows a state where one set of single cells 310 and 340 are arranged adjacent to each other and electrically connected in the assembled battery 300 according to the third embodiment. FIG. 8 shows a part of the positive electrode terminal 320 and the negative electrode terminal 360. Further, FIG. 9 shows a state in which the positive electrode terminal 320 and the negative electrode terminal 360 are connected. In the assembled battery 300 according to the third embodiment, the positive electrode terminals 320 and 350, the negative electrode terminals 330 and 360, and the terminal connection member 370 have the positive electrode terminals 220 and 250 and the negative electrode terminals according to the second embodiment. 230 and 260 and the terminal connection member 270. Other than that, it is substantially the same as the second embodiment.

組電池３００を構成する各々の単電池３１０，３４０は、正極電極端子（第２電極端子）３２０，３５０と負極電極端子（第１電極端子）３３０，３６０とを有する。
一方の単電池３１０の正極電極端子３２０は、単電池３１０の一端辺（図７中、上方）から延出する板状の正極第１延出部３２１と、この正極第１延出部３２１の先端部分で直角に屈曲して単電池３１０，３４０の配置方向Ｈに延出する板状の正極第２延出部（端子側第２凸接合部）３２３とを有する。正極第２延出部３２３には、ケースから離れる方向に突出すると共に、配置方向Ｈにこの正極第２延出部３２３の先端まで延びる第１凸部（端子側第２凸部）３２５が形成されている。この第１凸部３２５は、その突出方向から見て細長い形状をなし、所定の間隔をあけて２つが平行に形成されている。 Each of the single cells 310 and 340 constituting the assembled battery 300 has positive electrode terminals (second electrode terminals) 320 and 350 and negative electrode terminals (first electrode terminals) 330 and 360.
The positive electrode terminal 320 of one unit cell 310 includes a plate-like positive electrode first extension 321 extending from one end side (upward in FIG. 7) of the unit cell 310, and the positive electrode first extension 321. It has a plate-like positive electrode second extension part (terminal side second convex joint part) 323 which is bent at a right angle at the tip part and extends in the arrangement direction H of the cells 310 and 340. The positive electrode second extension 323 is formed with a first protrusion (terminal-side second protrusion) 325 that protrudes in a direction away from the case and extends in the arrangement direction H to the tip of the positive electrode second extension 323. Has been. The first protrusions 325 have an elongated shape when viewed from the protruding direction, and two are formed in parallel at a predetermined interval.

また、他方の単電池３４０の負極電極端子３６０は、単電池３４０の一端辺（図７中、上方）から延出する板状の負極第１延出部３６１と、この負極第１延出部３６１の先端部分で直角に屈曲して配置方向Ｈに延出する板状の負極第２延出部（端子側第１凸接合部）３６３とを有する。負極第２延出部３６３には、ケースから離れる方向に突出すると共に、配置方向Ｈにこの負極第２延出部３６３の先端まで延びる第２凸部（端子側第１凸部）３６５が形成されている。この第２凸部３６５は、その突出方向から見て細長い形状をなし、所定の間隔をあけて２つが平行に形成されている。   Further, the negative electrode terminal 360 of the other unit cell 340 includes a plate-like first negative extension 361 extending from one end side (upward in FIG. 7) of the single cell 340 and the negative first extension part. And a plate-like negative electrode second extension portion (terminal-side first convex joint portion) 363 that is bent at a right angle at the tip portion of 361 and extends in the arrangement direction H. The negative electrode second extension 363 is formed with a second protrusion (terminal-side first protrusion) 365 that protrudes in the direction away from the case and extends in the arrangement direction H to the tip of the negative electrode second extension 363. Has been. The second convex portion 365 has an elongated shape when viewed from the protruding direction, and two are formed in parallel at a predetermined interval.

次に、端子接続部材３７０について説明する。この端子接続部材３７０は、板状に延びる部材第１延出部（部材側第２受入接合部）３７１と、この部材第１延出部３７１とは反対方向に板状に延びる部材第２延出部（部材側第１受入接合部）３７３と、部材第１延出部３７１と部材第２延出部３７３との間に位置する部材中間部３７５とを有する。   Next, the terminal connection member 370 will be described. The terminal connecting member 370 includes a member first extending portion (member-side second receiving joint portion) 371 extending in a plate shape and a member second extending in a plate shape in a direction opposite to the member first extending portion 371. It has an exit part (member-side first receiving joint part) 373 and a member intermediate part 375 positioned between the member first extension part 371 and the member second extension part 373.

部材第１延出部３７１には、配置方向Ｈにこの部材第１延出部３７１の先端まで延びる細長い切り欠きからなる第１受入部（部材側第２受入部）３７７が形成されている。この第１受入部３７７は、所定の間隔をあけて２つが平行に形成されている。また、部材第２延出部３７３には、配置方向Ｈにこの部材第２延出部３７３の先端まで延びる第２受入部（部材側第１受入部）３７９が形成されている。この第２受入部３７９も、所定の間隔をあけて２つが平行に形成されている。   The member first extending portion 371 is formed with a first receiving portion (member-side second receiving portion) 377 formed of an elongated notch extending in the arrangement direction H to the tip of the member first extending portion 371. Two first receiving portions 377 are formed in parallel at a predetermined interval. The member second extending portion 373 is formed with a second receiving portion (member-side first receiving portion) 379 extending in the arrangement direction H to the tip of the member second extending portion 373. The second receiving portion 379 is also formed in parallel at a predetermined interval.

組電池３００において、互いに隣り合って配置された単電池３１０，３４０は、一方の単電池３１０の正極電極端子３２０と他方の単電池３４０の負極電極端子３６０とが、端子接続部材３７０を介して電気的に接続されている。具体的には、正極電極端子３２０の正極第２延出部３２３と端子接続部材３７０の部材第１延出部３７１とが重なり、正極第２延出部３２３に設けられた２つの第１凸部３２５と部材第１延出部３７１に設けられた２つの第１受入部３７７とが嵌合した状態で、各々の第１凸部３２５と第１受入部３７７とが溶接により接合している（図９参照）。この溶接部分は、第１凸部３２５と第１受入部３７７とが嵌合する部位について、配置方向Ｈに沿って形成されている。なお、正極第２延出部３２３と部材第１延出部３７１とが重なった状態で、正極第２延出部３２３がケース側、部材第１延出部３７１がケースから離れる側に位置する。   In the assembled battery 300, the single cells 310 and 340 arranged adjacent to each other include a positive electrode terminal 320 of one single cell 310 and a negative electrode terminal 360 of the other single cell 340 via a terminal connection member 370. Electrically connected. Specifically, the positive electrode second extending portion 323 of the positive electrode terminal 320 and the member first extending portion 371 of the terminal connection member 370 overlap with each other, and the two first protrusions provided on the positive electrode second extending portion 323. Each first convex portion 325 and the first receiving portion 377 are joined by welding in a state where the portion 325 and the two first receiving portions 377 provided in the member first extending portion 371 are fitted. (See FIG. 9). This welded portion is formed along the arrangement direction H at a portion where the first convex portion 325 and the first receiving portion 377 are fitted. In addition, in a state where the positive electrode second extending portion 323 and the member first extending portion 371 overlap, the positive electrode second extending portion 323 is positioned on the case side, and the member first extending portion 371 is positioned on the side away from the case. .

また、負極電極端子３６０の負極第２延出部３６３と端子接続部材３７０の部材第２延出部３７３とが重なり、負極第２延出部３６３に設けられた２つの第２凸部３６５と部材第２延出部３７３に設けられた２つの第２受入部３７９とを嵌合した状態で、各々の第２凸部３６５と第２受入部３７９とが溶接により接合している。この溶接部分も、第２凸部３７５と第２受入部３７９とが嵌合する部位について、配置方向Ｈに沿って形成されている。なお、負極第２延出部３６３と部材第２延出部３７３とが重なった状態で、負極第２延出部３６３がケース側、部材第２延出部３７３がケースから離れる側に位置する。   Further, the negative electrode second extension 363 of the negative electrode terminal 360 and the member second extension 373 of the terminal connection member 370 overlap with each other, and two second convex portions 365 provided on the negative electrode second extension 363, and In a state where the two second receiving portions 379 provided on the member second extending portion 373 are fitted, the respective second convex portions 365 and the second receiving portions 379 are joined by welding. This welded portion is also formed along the arrangement direction H at a portion where the second convex portion 375 and the second receiving portion 379 are fitted. In addition, in a state where the negative electrode second extending portion 363 and the member second extending portion 373 overlap each other, the negative electrode second extending portion 363 is positioned on the case side, and the member second extending portion 373 is positioned on the side away from the case. .

このような組電池３００は、上記実施形態２の組電池２００と概略同様にして製造できる。そして、その位置合わせ工程においては、正極電極端子３２０と端子接続部材３７０との位置決め、負極電極端子３６０と端子接続部材３７０との位置決めが容易である等、上記実施形態２と同様な作用効果を得ることができる。また、その溶接工程においても、スパッタにより単電池３１０，３４０が破損することを抑制できる等、上記実施形態２と同様な作用効果を得ることができる。   Such an assembled battery 300 can be manufactured in substantially the same manner as the assembled battery 200 of the second embodiment. In the alignment step, the same effects as those of the second embodiment are achieved, such as positioning of the positive electrode terminal 320 and the terminal connection member 370 and positioning of the negative electrode terminal 360 and the terminal connection member 370 are easy. Obtainable. In the welding process, the same effects as those of the second embodiment can be obtained, for example, it is possible to prevent the single cells 310 and 340 from being damaged by sputtering.

（実施形態４）
次いで、第４の実施形態について説明する。なお、上記実施形態１〜３のいずれかと同様な部分の説明は、省略または簡略化する。図１０に本実施形態４に係る組電池４００のうち、１組の単電池４１０，４４０が互いに隣り合って配置され、電気的に接続された様子を示す。また、図１１に正極電極端子４２０及び負極電極端子４６０の一部分の形態を示す。更に、図１２に正極電極端子４２０と負極電極端子４６０を接続した様子を示す。本実施形態４の組電池４００は、端子接続部材４７０の形態が、上記実施形態２及び３の端子接続部材２７０，３７０と異なる。それ以外は、上記実施形態２または３と概略同様である。 (Embodiment 4)
Next, a fourth embodiment will be described. In addition, description of the part similar to either of the said Embodiments 1-3 is abbreviate | omitted or simplified. FIG. 10 shows a state where one set of single cells 410 and 440 are arranged adjacent to each other and electrically connected in the assembled battery 400 according to the fourth embodiment. FIG. 11 shows a part of the positive electrode terminal 420 and the negative electrode terminal 460. Further, FIG. 12 shows a state where the positive electrode terminal 420 and the negative electrode terminal 460 are connected. In the assembled battery 400 of the fourth embodiment, the terminal connection member 470 is different from the terminal connection members 270 and 370 of the second and third embodiments. Other than that, it is substantially the same as the second or third embodiment.

組電池４００を構成する各々の単電池４１０，４４０は、正極電極端子（第２電極端子）４２０，４５０と負極電極端子（第１電極端子）４３０，４６０とを有する。
一方の単電池４１０の正極電極端子４２０は、単電池４１０の一端辺（図１０中、上方）から延出する板状の正極第１延出部４２１と、この正極第１延出部４２１の先端部分で直角に屈曲して単電池４１０，４４０の配置方向Ｈに延出する板状の正極第２延出部（端子側第２受入接合部）４２３とを有する。正極第２延出部４２３には、上記実施形態２と同様に、２つの第１受入部（端子側第２受入部）４２５が形成されている。 Each of the single cells 410 and 440 constituting the assembled battery 400 includes positive electrode terminals (second electrode terminals) 420 and 450 and negative electrode terminals (first electrode terminals) 430 and 460.
The positive electrode terminal 420 of one unit cell 410 has a plate-like positive electrode first extension 421 extending from one end side (upward in FIG. 10) of the unit cell 410, and the positive electrode first extension 421. It has a plate-like positive electrode second extension portion (terminal side second receiving joint portion) 423 that is bent at a right angle at the tip portion and extends in the arrangement direction H of the cells 410 and 440. Similarly to the second embodiment, two first receiving portions (terminal-side second receiving portions) 425 are formed in the positive electrode second extending portion 423.

また、他方の単電池４４０の負極電極端子４６０は、単電池４４０の一端辺（図１０中、上方）から延出する板状の負極第１延出部４６１と、この負極第１延出部４６１の先端部分で直角に屈曲して配置方向Ｈに延出する板状の負極第２延出部（端子側第１凸接合部）４６３とを有する。負極第２延出部４６３には、上記実施形態３と同様に、２つの第２凸部（端子側第１凸部）４６５が形成されている。   The negative electrode terminal 460 of the other unit cell 440 includes a plate-like first negative extension 461 extending from one end side (upward in FIG. 10) of the single cell 440 and the negative first extension part. And a plate-like negative electrode second extending portion (terminal-side first convex joint portion) 463 that is bent at a right angle at the tip portion of 461 and extends in the arrangement direction H. In the negative electrode second extending portion 463, two second convex portions (terminal-side first convex portions) 465 are formed as in the third embodiment.

次に、端子接続部材４７０について説明する。この端子接続部材４７０は、板状に延びる部材第１延出部（部材側第２凸接合部）４７１と、この部材第１延出部４７１とは反対方向に板状に延びる部材第２延出部（部材側第１受入接合部）４７３と、部材第１延出部４７１と部材第２延出部４７３との間に位置する部材中間部４７５とを有する。   Next, the terminal connection member 470 will be described. The terminal connecting member 470 includes a member first extending portion (member-side second convex joint portion) 471 extending in a plate shape and a member second extending extending in a plate shape in a direction opposite to the member first extending portion 471. It has an exit part (member-side first receiving joint part) 473 and a member intermediate part 475 located between the member first extension part 471 and the member second extension part 473.

部材第１延出部４７１には、配置方向Ｈにこの部材第１延出部４７１の先端まで延びる第１凸部（部材側第２凸部）４７７が形成されている。この第１凸部４７７は、その突出方向から見て細長い形状をなし、所定の間隔をあけて２つが平行に形成されている。また、部材第２延出部４７３には、配置方向Ｈにこの部材第２延出部４７３の先端まで延びる第２受入部（部材側第１受入部）４７９が形成されている。この第２受入部４７９も、所定の間隔をあけて２つが平行に形成されている。   The member first extending portion 471 is formed with a first convex portion (member-side second convex portion) 477 extending in the arrangement direction H to the tip of the member first extending portion 471. The first protrusions 477 have an elongated shape when viewed from the protruding direction, and two are formed in parallel at a predetermined interval. The member second extending portion 473 is formed with a second receiving portion (member-side first receiving portion) 479 extending in the arrangement direction H to the tip of the member second extending portion 473. The second receiving portion 479 is also formed in parallel with a predetermined interval.

組電池４００において、互いに隣り合って配置された単電池４１０，４４０は、一方の単電池４１０の正極電極端子４２０と他方の単電池４４０の負極電極端子４６０とが、端子接続部材４７０を介して電気的に接続されている。具体的には、正極電極端子４２０の正極第２延出部４２３と端子接続部材４７０の部材第１延出部４７１とが重なり、正極第２延出部４２３に設けられた２つの第１受入部４２５と部材第１延出部４７１に設けられた２つの第１凸部４７７とが嵌合した状態で、各々の第１受入部４２５と第１凸部４７７とが溶接により接合している（図１２参照）。この溶接部分は、第１受入部４２５と第１受入部４７７とが嵌合する部位について、配置方向Ｈに沿って形成されている。なお、正極第２延出部４２３と部材第１延出部４７１とが重なった状態で、正極第２延出部４２３がケースから離れる側、部材第１延出部４７１がケース側に位置する。   In the assembled battery 400, the unit cells 410 and 440 arranged adjacent to each other include a positive electrode terminal 420 of one unit cell 410 and a negative electrode terminal 460 of the other unit cell 440 via a terminal connection member 470. Electrically connected. Specifically, the positive first extension portion 423 of the positive electrode terminal 420 and the member first extension portion 471 of the terminal connection member 470 overlap with each other, and two first receiving portions provided in the positive second extension portion 423 are provided. The first receiving portion 425 and the first convex portion 477 are joined by welding in a state where the first convex portion 477 provided on the member 425 and the member first extending portion 471 are fitted. (See FIG. 12). This welded portion is formed along the arrangement direction H at a portion where the first receiving portion 425 and the first receiving portion 477 are fitted. In addition, in a state where the positive electrode second extension portion 423 and the member first extension portion 471 overlap, the positive electrode second extension portion 423 is located on the side away from the case, and the member first extension portion 471 is located on the case side. .

また、負極電極端子４６０の負極第２延出部４６３と端子接続部材４７０の部材第２延出部４７３とが重なり、負極第２延出部４６３に設けられた２つの第２凸部４６５と部材第２延出部４７３に設けられた２つの第２受入部４７９とが嵌合した状態で、各々の第２凸部４６５と第２受入部４７９とが溶接により接合している。この溶接部分も、第２凸部４６５と第２受入部４７９とが嵌合する部位について、配置方向Ｈに沿って形成されている。なお、負極第２延出部４６３と部材第２延出部４７３とが重なった状態で、負極第２延出部４６３がケース側、部材第２延出部４７３がケースから離れる側に位置する。   Further, the negative electrode second extending portion 463 of the negative electrode terminal 460 and the member second extending portion 473 of the terminal connection member 470 overlap with each other, and two second convex portions 465 provided on the negative electrode second extending portion 463, In a state where the two second receiving portions 479 provided in the member second extending portion 473 are fitted, the respective second convex portions 465 and the second receiving portions 479 are joined by welding. This welded portion is also formed along the arrangement direction H at a portion where the second convex portion 465 and the second receiving portion 479 are fitted. In addition, in a state where the negative electrode second extending portion 463 and the member second extending portion 473 overlap each other, the negative electrode second extending portion 463 is positioned on the case side, and the member second extending portion 473 is positioned on the side away from the case. .

このような組電池４００も、上記実施形態２及び３の組電池２００，３００と概略同様にして製造できる。そして、その位置合わせ工程において、正極電極端子４２０と端子接続部材４７０との位置決め、負極電極端子４６０と端子接続部材４７０との位置決めが容易である等、上記実施形態２または３と同様な作用効果を得ることができる。また、その溶接工程においても、スパッタにより単電池４１０，４４０が破損することを抑制できる等、上記実施形態２または３と同様な作用効果を得ることができる。   Such an assembled battery 400 can also be manufactured in substantially the same manner as the assembled batteries 200 and 300 of the second and third embodiments. In the alignment step, the same effects as in the second or third embodiment, such as easy positioning of the positive electrode terminal 420 and the terminal connection member 470 and easy positioning of the negative electrode terminal 460 and the terminal connection member 470, etc. Can be obtained. Also in the welding process, the same effects as those of the second or third embodiment can be obtained, for example, it is possible to prevent the single cells 410 and 440 from being damaged by sputtering.

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１〜４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いうまでもない。
例えば、上記実施形態１〜４では、単電池１１０，１４０等同士を直列に接続したものを例示したが、単電池同士を並列に接続する場合に本発明を適用することもできる。
また、ケースの材質及び形状は、ラミネート樹脂フィルムに限定されることはなく、例えば、角型金属ケース等にも本発明を適用することができる。 In the above, the present invention has been described with reference to the embodiments. However, the present invention is not limited to the above-described first to fourth embodiments, and can be appropriately modified and applied without departing from the gist thereof. Not too long.
For example, in Embodiments 1 to 4 described above, the cells 110, 140 and the like are connected in series, but the present invention can also be applied when the cells are connected in parallel.
The material and shape of the case are not limited to the laminated resin film, and the present invention can be applied to, for example, a rectangular metal case.

実施形態１に係る組電池に関し、１組の単電池が互いに隣り合って配置され、電気的に接続された様子を示す説明図である。It is explanatory drawing which shows a mode that the battery of 1 set was arrange | positioned adjacent to each other and electrically connected regarding the battery pack concerning Embodiment 1. FIG. 実施形態１に係り、互いに接続される正極電極端子及び負極電極端子の一部分の形態を示す説明図である。It is explanatory drawing which concerns on Embodiment 1 and shows the form of a part of positive electrode terminal and negative electrode terminal which are mutually connected. 実施形態１に係り、正極電極端子と負極電極端子を接続した様子を示す説明図である。It is explanatory drawing which shows a mode that it concerns on Embodiment 1 and the positive electrode terminal and the negative electrode terminal were connected. 実施形態２に係る組電池に関し、１組の単電池が互いに隣り合って配置され、電気的に接続された様子を示す説明図である。It is explanatory drawing which shows a mode that one set of cell was arrange | positioned adjacent to each other and electrically connected regarding the assembled battery which concerns on Embodiment 2. FIG. 実施形態２に係り、互いに接続される正極電極端子及び負極電極端子の一部分の形態を示す説明図である。It is explanatory drawing which concerns on Embodiment 2 and shows the form of a part of positive electrode terminal and negative electrode terminal which are mutually connected. 実施形態２に係り、正極電極端子と負極電極端子を接続した様子を示す説明図である。It is explanatory drawing which shows a mode that it concerns on Embodiment 2 and connected the positive electrode terminal and the negative electrode terminal. 実施形態３に係る組電池に関し、１組の単電池が互いに隣り合って配置され、電気的に接続された様子を示す説明図である。It is explanatory drawing which shows a mode that one set of cell is arrange | positioned adjacent to each other and electrically connected regarding the assembled battery which concerns on Embodiment 3. FIG. 実施形態３に係り、互いに接続される正極電極端子及び負極電極端子の一部分の形態を示す説明図である。It is explanatory drawing which concerns on Embodiment 3 and shows the form of a part of positive electrode terminal and negative electrode terminal which are mutually connected. 実施形態３に係り、正極電極端子と負極電極端子を接続した様子を示す説明図である。It is explanatory drawing which shows a mode that it concerns on Embodiment 3 and connected the positive electrode terminal and the negative electrode terminal. 実施形態４に係る組電池に関し、１組の単電池が互いに隣り合って配置され、電気的に接続された様子を示す説明図である。It is explanatory drawing which shows a mode that one set of cell is arrange | positioned adjacent to each other and electrically connected regarding the assembled battery which concerns on Embodiment 4. FIG. 実施形態４に係り、互いに接続される正極電極端子及び負極電極端子の一部分の形態を示す説明図である。It is explanatory drawing which concerns on Embodiment 4 and shows the form of a part of positive electrode terminal and negative electrode terminal which are mutually connected. 実施形態４に係り、正極電極端子と負極電極端子を接続した様子を示す説明図である。It is explanatory drawing which shows a mode that it concerns on Embodiment 4 and connected the positive electrode terminal and the negative electrode terminal. 従来技術１に係る組電池に関し、１組の単電池が互いに隣り合って配置され、電気的に接続された様子を示す説明図である。It is explanatory drawing which shows a mode that the battery of 1 set is arrange | positioned adjacent to each other and electrically connected regarding the battery pack which concerns on the prior art 1. FIG. 従来技術２に係る組電池に関し、１組の単電池が互いに隣り合って配置され、電気的に接続された様子を示す説明図である。It is explanatory drawing which shows a mode that one set of cell was arrange | positioned adjacent to each other and electrically connected regarding the assembled battery which concerns on the prior art 2. FIG. 従来技術３に係る組電池に関し、１組の単電池が互いに隣り合って配置され、電気的に接続された様子を示す説明図である。It is explanatory drawing which shows a mode that the battery of 1 set was arrange | positioned adjacent to each other and electrically connected regarding the battery pack which concerns on the prior art 3. FIG.

符号の説明Explanation of symbols

１００，２００，３００，４００ 組電池
１１０，２１０，３１０，４１０ 単電池
１４０，２４０，３４０，４４０ 単電池
１１１ ケース
１２０，２２０，３２０，４２０ 正極電極端子（第２電極端子）
１２３ 正極第２延出部（受入接合部）
２２３，４２３ 正極第２延出部（端子側第２受入接合部）
３２３ 正極第２延出部（端子側第２凸接合部）
１２５ 受入部
２２５，４２５ 第１受入部（端子側第２受入部）
３２５ 第１凸部（端子側第２凸部）
１３０，２３０，３３０，４３０ 負極電極端子（第１電極端子）
１５０，２５０，３５０，４５０ 正極電極端子（第２電極端子）
１６０，２６０，３６０，４６０ 負極電極端子（第１電極端子）
１６３ 負極第２延出部（凸接合部）
２６３ 負極第２延出部（端子側第１受入接合部）
３６３，４６３ 負極第２延出部（端子側第１凸接合部）
１６５ 凸部
２６５ 第２受入部（端子側第１受入部）
３６５，４６５ 第２凸部（端子側第１凸部）
２７０，３７０，４７０ 端子接続部材
２７１，４７１ 部材第１延出部（部材側第２凸接合部）
３７１ 部材第１延出部（部材側第２受入接合部）
２７３ 部材第２延出部（部材側第１凸接合部）
３７３，４７３ 部材第２延出部（部材側第１受入接合部）
２７７，４７７ 第１凸部（部材側第２凸部）
３７７ 第１受入部（部材側第２受入部）
２７９ 第２凸部（部材側第１凸部）
３７９，４７９ 第２受入部（部材側第１受入部）
Ｈ （単電池同士の）配置方向
Ｌ 端子並び方向 100, 200, 300, 400 Battery pack 110, 210, 310, 410 Cell 140, 240, 340, 440 Cell 111 Case 120, 220, 320, 420 Positive electrode terminal (second electrode terminal)
123 Positive electrode second extension (receiving joint)
223, 423 positive electrode second extension (terminal-side second receiving joint)
323 positive electrode second extension part (terminal side second convex joint part)
125 receiving parts 225, 425 first receiving part (terminal side second receiving part)
325 1st convex part (terminal side 2nd convex part)
130, 230, 330, 430 Negative electrode terminal (first electrode terminal)
150, 250, 350, 450 Positive electrode terminal (second electrode terminal)
160, 260, 360, 460 Negative electrode terminal (first electrode terminal)
163 Negative electrode second extension (convex joint)
263 Negative electrode second extension part (terminal side first receiving joint part)
363,463 Negative electrode second extension (terminal side first convex joint)
165 Convex portion 265 Second receiving portion (terminal side first receiving portion)
365, 465 Second convex part (terminal side first convex part)
270, 370, 470 Terminal connecting members 271, 471 Member first extending portion (member side second convex joint portion)
371 member first extension part (member side second receiving joint part)
273 member second extension part (member side first convex joint part)
373,473 Member second extending portion (member side first receiving joint portion)
277, 477 First convex part (member side second convex part)
377 1st receiving part (member side 2nd receiving part)
279 Second convex portion (member side first convex portion)
379, 479 Second receiving portion (member side first receiving portion)
H (between single cells) arrangement direction L terminal arrangement direction

Claims (12)

ケースから突出する第１電極端子と第２電極端子とを備え、隣り合って配置された他の電池と電気的に接続するように構成されてなる電池であって、
前記第１電極端子は、凸部を有する凸接合部を備え、
前記第２電極端子は、前記他の電池を隣り合わせに配置したとき、他の電池における前記第１電極端子の前記凸接合部と重なる受入接合部であって、前記凸部と嵌合する貫通孔或いは切り欠きからなる受入部を有する受入接合部を備える
電池。 A battery comprising a first electrode terminal and a second electrode terminal projecting from a case, wherein the battery is configured to be electrically connected to other batteries disposed adjacent to each other,
The first electrode terminal includes a convex joint having a convex part,
The second electrode terminal is a receiving joint portion that overlaps the convex joint portion of the first electrode terminal in another battery when the other battery is arranged next to each other, and is a through hole that fits into the convex portion. Alternatively, a battery including a receiving joint portion having a receiving portion made of a notch. 請求項１に記載の電池であって、
前記凸部は、その突出方向から見て、細長い形状とされてなる
電池。 The battery according to claim 1,
The convex part is a battery having an elongated shape when viewed from the protruding direction. 請求項１または請求項２に記載の電池であって、
前記第１電極端子及び前記第２電極端子は、
一方の電池についての前記第１電極端子の前記凸接合部と他方の電池についての前記第２電極端子の前記受入接合部とを重ね、前記凸部と前記受入部とを嵌合させた状態で、
電池同士の配置方向に直交する方向への移動を規制する一方、前記配置方向への移動を可能とする形態とされてなる
電池。 The battery according to claim 1 or 2,
The first electrode terminal and the second electrode terminal are:
In a state where the convex joint portion of the first electrode terminal for one battery and the receiving joint portion of the second electrode terminal for the other battery are overlapped, and the convex portion and the receiving portion are fitted. ,
A battery configured to restrict movement in a direction perpendicular to the arrangement direction of the batteries while allowing movement in the arrangement direction. 請求項１〜請求項３のいずれか一項に記載の電池であって、
前記凸部及び前記受入部が、それぞれ複数形成されてなる
電池。 The battery according to any one of claims 1 to 3,
A battery in which a plurality of convex portions and receiving portions are formed. 請求項１〜請求項４のいずれか一項に記載の電池であって、
前記ケースは、ラミネート樹脂フィルムからなり、
前記受入接合部は、前記凸接合部と前記受入接合部とを重ねた状態において、前記凸接合部よりも前記ケースから離れて位置する形態とされてなる
電池。 It is a battery as described in any one of Claims 1-4, Comprising:
The case is made of a laminated resin film,
The battery in which the receiving joint portion is positioned farther from the case than the convex joint portion in a state where the convex joint portion and the receiving joint portion are overlapped. 第１電極端子と第２電極端子とを有する電池を複数備え、少なくとも一組の互いに隣り合って配置された電池同士について、一方の電池の前記第１電極端子と他方の電池の前記第２電極端子とを電気的に接続してなる組電池の製造方法であって、
前記第１電極端子は、凸部を有する凸接合部を備え、
前記第２電極端子は、電池同士を隣り合わせに配置したとき、他の電池の前記凸接合部と重なる受入接合部であって、前記凸部と嵌合する貫通孔或いは切り欠きからなる受入部を有する受入接合部を備え、
電池同士を隣り合わせに配置し、一方の電池の前記凸部と他方の電池の前記受入部とを嵌合させつつ、前記凸接合部と前記受入接合部とを重ねてこれらの位置合わせを行う位置合わせ工程と、
前記位置合わせ工程後、前記受入接合部側から前記凸部と前記受入部とを溶接する溶接工程と、を備える
組電池の製造方法。 A plurality of batteries each having a first electrode terminal and a second electrode terminal are provided, and at least one set of batteries arranged next to each other, the first electrode terminal of one battery and the second electrode of the other battery A method of manufacturing an assembled battery in which terminals are electrically connected,
The first electrode terminal includes a convex joint having a convex part,
The second electrode terminal is a receiving joint portion that overlaps with the convex joint portion of another battery when the batteries are arranged next to each other, and has a receiving portion that includes a through hole or a notch that fits the convex portion. Having a receiving joint with
Positions where the batteries are arranged next to each other, and the convex joint part of one battery and the receiving part of the other battery are fitted together, and the convex joint part and the receiving joint part are overlapped to align them. Combining process,
After the said alignment process, the welding process which welds the said convex part and the said receiving part from the said receiving joint part side, The manufacturing method of an assembled battery provided with. ケースから突出する第１電極端子と第２電極端子とを備え、隣り合って配置された他の電池と端子接続部材を介して電気的に接続するように構成されてなる電池であって、
前記第１電極端子は、
部材側第１凸部を有する部材側第１凸接合部を備える前記端子接続部材の前記部材側第１凸接合部に重ねたときに、前記部材側第１凸部と嵌合する貫通孔或いは切り欠きからなる端子側第１受入部を有する端子側第１受入接合部、または、
貫通孔或いは切り欠きからなる部材側第１受入部を有する部材側第１受入接合部を備える前記端子接続部材の前記部材側第１受入接合部を重ねたときに、前記部材側第１受入部と嵌合する端子側第１凸部を有する端子側第１凸接合部を備え、
前記第２電極端子は、
部材側第２凸部を有する部材側第２凸接合部を備える前記端子接続部材の前記部材側第２凸接合部に重ねたときに、前記部材側第２凸部と嵌合する貫通孔或いは切り欠きからなる端子側第２受入部を有する端子側第２受入接合部、または、
貫通孔或いは切り欠きからなる部材側第２受入部を有する部材側第２受入接合部を備える前記端子接続部材の前記部材側第２受入接合部を重ねたときに、前記部材側第２受入部と嵌合する端子側第２凸部を有する端子側第２凸接合部を備える
電池。 A battery comprising a first electrode terminal and a second electrode terminal protruding from a case, and configured to be electrically connected to another battery arranged adjacent to each other via a terminal connection member,
The first electrode terminal is
A through-hole that fits into the member-side first convex portion when the member-side first convex joint portion of the terminal connecting member having the member-side first convex portion is overlapped with the member-side first convex portion. A terminal-side first receiving joint having a terminal-side first receiving portion made of a notch, or
When the member side first receiving joint portion of the terminal connecting member is provided with a member side first receiving joint portion having a member side first receiving portion formed of a through hole or a notch, the member side first receiving portion is overlapped. A terminal-side first convex joint portion having a terminal-side first convex portion to be fitted with,
The second electrode terminal is
A through-hole that fits into the member-side second convex portion when superimposed on the member-side second convex joint portion of the terminal connecting member having a member-side second convex joint portion having a member-side second convex portion or A terminal-side second receiving joint having a terminal-side second receiving portion made of a notch, or
When the member side second receiving joint portion of the terminal connecting member is provided with a member side second receiving joint portion having a member side second receiving portion formed of a through hole or a notch, the member side second receiving portion is overlapped. A battery provided with a terminal-side second convex joint having a terminal-side second convex part to be fitted. 請求項７に記載の電池であって、
前記端子側第１凸部及び前記端子側第２凸部の少なくともいずれかは、自身の突出方向から見て、細長い形状とされてなる
電池。 The battery according to claim 7,
A battery in which at least one of the terminal-side first convex portion and the terminal-side second convex portion is formed in an elongated shape when viewed from its protruding direction. 請求項７または請求項８に記載の電池であって、
前記第１電極端子は、
前記端子接続部材を重ね、前記端子側第１受入部に前記部材側第１凸部を嵌合させた状態で、または、前記端子側第１凸部を前記部材側第１受入部に嵌合させた状態で、
前記他の電池との配置方向に直交する方向への移動を規制する一方、前記配置方向への移動を可能とする形態とされてなり、
前記第２電極端子は、
前記端子接続部材を重ね、前記端子側第２受入部に前記部材側第２凸部を嵌合させた状態で、または、前記端子側第２凸部を前記部材側第２受入部に嵌合させた状態で、
前記配置方向に直交する方向への移動を規制する一方、前記配置方向への移動を可能とする形態とされてなる
電池。 The battery according to claim 7 or 8, wherein
The first electrode terminal is
In a state where the terminal connection member is overlapped and the member side first convex portion is fitted to the terminal side first receiving portion, or the terminal side first convex portion is fitted to the member side first receiving portion. In the state
While restricting movement in the direction perpendicular to the direction of arrangement with the other battery, it is configured to allow movement in the direction of arrangement,
The second electrode terminal is
The terminal connection member is overlapped and the terminal side second convex portion is fitted to the terminal side second receiving portion, or the terminal side second convex portion is fitted to the member side second receiving portion. In the state
A battery that is configured to allow movement in the arrangement direction while restricting movement in a direction orthogonal to the arrangement direction. 請求項７〜請求項９のいずれか一項に記載の電池であって、
前記端子側第１受入部または前記端子側第１凸部、及び、前記端子側第２受入部または前記端子側第２凸部は、それぞれ複数形成されてなる
電池。 It is a battery as described in any one of Claims 7-9, Comprising:
A battery in which a plurality of the terminal-side first receiving portions or the terminal-side first convex portions, and the terminal-side second receiving portions or the terminal-side second convex portions are formed. 請求項７〜請求項１０のいずれか一項に記載の電池であって、
前記ケースは、ラミネート樹脂フィルムからなり、
前記端子側第１受入接合部は、前記第１電極端子に前記端子接続部材を重ねた状態において、前記部材側第１凸接合部よりも前記ケースから離れて位置する形態とされてなり、または、
前記端子側第１凸接合部は、前記第１電極端子に前記端子接続部材を重ねた状態において、前記部材側第１受入接合部よりも前記ケース側に位置する形態とされてなり、
前記端子側第２受入接合部は、前記第２電極端子に前記端子接続部材を重ねた状態において、前記部材側第２凸接合部よりも前記ケースから離れて位置する形態とされてなり、または、
前記端子側第２凸接合部は、前記第２電極端子に前記端子接続部材を重ねた状態において、前記部材側第２受入接合部よりも前記ケース側に位置する形態とされてなる
電池。 It is a battery as described in any one of Claims 7-10, Comprising:
The case is made of a laminated resin film,
The terminal side first receiving joint portion is configured to be located farther from the case than the member side first convex joint portion in a state where the terminal connecting member is overlapped on the first electrode terminal, or ,
The terminal-side first convex joint portion is configured to be positioned closer to the case than the member-side first receiving joint portion in a state where the terminal connection member is overlapped with the first electrode terminal.
The terminal-side second receiving joint portion is configured to be positioned farther from the case than the member-side second convex joint portion in a state where the terminal connection member is overlapped on the second electrode terminal, or ,
The terminal-side second convex joint portion is configured to be positioned closer to the case side than the member-side second receiving joint portion in a state where the terminal connection member is overlapped with the second electrode terminal. 第１電極端子と第２電極端子とを有する電池を複数備え、少なくとも一組の互いに隣り合って配置された電池同士について、一方の電池の前記第１電極端子と他方の電池の前記第２電極端子とを端子接続部材を介して電気的に接続してなる組電池の製造方法であって、
前記端子接続部材及び前記第１電極端子は、
部材側第１凸部を有する部材側第１凸接合部を備える端子接続部材、及び、前記部材側第１凸接合部と重なる端子側第１受入接合部であって、前記部材側第１凸部と嵌合する貫通孔或いは切り欠きからなる端子側第１受入部を有する端子側第１受入接合部を備える第１電極端子であり、または、
貫通孔或いは切り欠きからなる部材側第１受入部を有する部材側第１受入接合部を備える端子接続部材、及び、前記部材側第１受入接合部と重なる端子側第１凸接合部であって、前記部材側第１受入部と嵌合する端子側第１凸部を有する端子側第１凸接合部を備える第１電極端子であり、
前記端子接続部材及び前記第２電極端子は、
部材側第２凸部を有する部材側第２凸接合部を備える端子接続部材、及び、前記部材側第２凸接合部と重なる端子側第２受入接合部であって、前記部材側第２凸部と嵌合する貫通孔或いは切り欠きからなる端子側第２受入部を有する端子側第２受入接合部を備える第２電極端子であり、または、
貫通孔或いは切り欠きからなる部材側第２受入部を有する部材側第２受入接合部を備える端子接続部材、及び、前記部材側第２受入接合部と重なる端子側第２凸接合部であって、前記部材側第２受入部と嵌合する端子側第２凸部を有する端子側第２凸接合部を備える第２電極端子であり、
前記部材側第１凸部と前記端子側第１受入部とを嵌合させつつ、前記部材側第１凸接合部と前記端子側第１受入接合部とを重ねてこれらの位置合わせを行う、または、前記部材側第１受入部と前記端子側第１凸部とを嵌合させつつ、前記部材側第１受入接合部と前記端子側第１凸接合部とを重ねてこれらの位置合わせを行うと共に、
前記部材側第２凸部と前記端子側第２受入部とを嵌合させつつ、前記部材側第２凸接合部と前記端子側第２受入接合部とを重ねてこれらの位置合わせを行う、または、前記部材側第２受入部と前記端子側第２凸部とを嵌合させつつ、前記部材側第２受入接合部と前記端子側第２凸接合部とを重ねてこれらの位置合わせを行う位置合わせ工程と、
前記位置合わせ工程後、前記端子側第１受入接合部側から前記部材側第１凸部と前記端子側第１受入部とを溶接する、または、前記部材側第１受入接合部側から前記部材側第１受入部と前記端子側第１凸部とを溶接すると共に、
前記端子側第２受入接合部側から前記部材側第２凸部と前記端子側第２受入部とを溶接する、または、前記部材側第２受入接合部側から前記部材側第２受入部と前記端子側第２凸部とを溶接する溶接工程と、を備える
組電池の製造方法。 A plurality of batteries each having a first electrode terminal and a second electrode terminal are provided, and at least one set of batteries arranged next to each other, the first electrode terminal of one battery and the second electrode of the other battery A method for producing an assembled battery in which terminals are electrically connected via a terminal connecting member,
The terminal connection member and the first electrode terminal are:
A terminal connecting member having a member-side first convex joint having a member-side first convex, and a terminal-side first receiving joint overlapping the member-side first convex joint, wherein the member-side first convex A first electrode terminal comprising a terminal-side first receiving joint portion having a terminal-side first receiving portion made of a through-hole or notch that fits into the portion, or
A terminal connection member including a member-side first receiving joint portion having a member-side first receiving portion formed of a through-hole or a notch, and a terminal-side first convex joint portion overlapping the member-side first receiving joint portion; A first electrode terminal including a terminal-side first convex joint portion having a terminal-side first convex portion fitted to the member-side first receiving portion;
The terminal connecting member and the second electrode terminal are:
A terminal connecting member having a member-side second convex joint having a member-side second convex, and a terminal-side second receiving joint overlapping the member-side second convex joint, wherein the member-side second convex A second electrode terminal provided with a terminal-side second receiving joint portion having a terminal-side second receiving portion consisting of a through hole or a notch that fits into the portion, or
A terminal connection member including a member-side second receiving joint portion having a member-side second receiving portion formed of a through hole or a notch, and a terminal-side second convex joint portion overlapping the member-side second receiving joint portion; A second electrode terminal including a terminal-side second convex joint portion having a terminal-side second convex portion fitted to the member-side second receiving portion,
While aligning the member-side first convex portion and the terminal-side first receiving portion, the member-side first convex joint portion and the terminal-side first receiving joint portion are overlapped to align them. Alternatively, the member-side first receiving joint and the terminal-side first convex joint are overlapped with each other while fitting the member-side first receiving part and the terminal-side first convex part. As well as
While aligning the member-side second convex portion and the terminal-side second receiving portion, the member-side second convex joint portion and the terminal-side second receiving joint portion are overlapped to align them. Alternatively, the member side second receiving joint portion and the terminal side second convex joint portion are overlapped with each other while the member side second receiving portion and the terminal side second convex portion are fitted. An alignment process to be performed;
After the positioning step, the member-side first convex portion and the terminal-side first receiving portion are welded from the terminal-side first receiving joint portion side, or the member-side first receiving joint portion side is connected to the member. Welding the side first receiving part and the terminal side first convex part,
The member side second convex portion and the terminal side second receiving portion are welded from the terminal side second receiving joint portion side, or the member side second receiving portion from the member side second receiving joint portion side. And a welding step of welding the terminal-side second convex portion.
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JP7327311B2 (en) 2020-07-22 2023-08-16 トヨタ自動車株式会社 assembled battery
JP2022021909A (en) * 2020-07-22 2022-02-03 トヨタ自動車株式会社 Battery pack
CN115176381A (en) * 2020-08-13 2022-10-11 株式会社 Lg新能源 Battery module having improved electrode lead connection structure, and battery pack and vehicle including the same
JP7462772B2 (en) 2020-08-13 2024-04-05 エルジー エナジー ソリューション リミテッド Battery module having improved electrode lead connection structure, battery pack including same, and automobile

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