JP4501334B2

JP4501334B2 - Aggregate battery and method of manufacturing the same

Info

Publication number: JP4501334B2
Application number: JP2002271197A
Authority: JP
Inventors: 真介福田; 哲郎南野; 弘之坂本; 陽一和泉
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2002-09-18
Filing date: 2002-09-18
Publication date: 2010-07-14
Anticipated expiration: 2022-09-18
Also published as: JP2004111183A

Description

【０００１】
【発明の属する技術分野】
本発明は、複数の極板群を電槽内に収容し、複数の単電池を組み合わせることなく汎用性の高い電圧及び電池容量が得られるようにした集合型電池及びその製造方法に関するものである。
【０００２】
【従来の技術】
電池は単電池当たりの起電力が小さいため、比較的大きな動作電力を要する電動機器などの電池電源として適用する場合には、複数の単電池を直列及び／又は並列に接続する必要がある。こうした比較的大きな電力を要する電池電源を構成するために、複数の単電池を一体化した集合型電池の形態に構成することが知られている。
【０００３】
図８は、従来技術に係る集合型電池の構成例を示すもので、ニッケル−水素蓄電池として構成された複数の単電池１０６を共通の一体電槽１０２内に収容し、一体電槽１０２内で単電池１０６を直列接続することにより、外部接続端子１０８から比較的大きな電力が供給できるように構成されている（特許文献１参照）。図８において、一体電槽１０２内は、各単電池１０６毎に隔壁１１１によって仕切られており、隔壁１１１によって仕切られた空間内にそれぞれ極板群１０５が収容されている。極板群１０５は正極板と負極板とをセパレータを介して積層し、各正極板に接続した正極集電板１３１と、各負極板に接続した負極集電板１３２とは、それぞれ隔壁１１１に形成された開口部に位置する接続突部１３３において対面接触し、それらの間が溶接され、両端に位置する単電池１０６の正極集電板１３１又は負極集電板１３２は、一体電槽１０２の両端に取り付けられた外部接続端子１０８に溶接接合されることにより、複数の単電池１０６は直列に接続され、外部接続端子１０８から比較的大きな供給電力を出力できる集合型電池１００に構成される。
【０００４】
【特許文献１】
特開２００１−９３５０８号公報（第４〜５頁、図８）
【０００５】
【発明が解決しようとする課題】
上記従来構成として示したように、集合型電池では複数の極板群を接続する構造が必要となる。接続構造は上記従来例に示したような溶接による方法や、鉛蓄電池に多くの例が見られるように外部で接続板をネジ固定する方法が知られている。しかし、接続構造を設けるための部品点数の増加や組み立て工数が増加する課題があり、溶接による接合では溶接品質が接続抵抗の増加やバラツキとして現れ、集合型電池の品質に影響を与える問題があった。
【０００６】
本発明が目的とするところは、集電板に接続構造を設けることにより、複数の極板群間の接続を不要にして、製造工数を少なく安定した性能が得られる集合型電池とその製造方法を提供することにある。
【０００７】
【課題を解決するための手段】
上記目的を達成するための本願第１発明は、正極板と負極板がセパレータを介して一体化された、複数の電極群が、電槽内の隔壁によって仕切られた複数の極板群収容空間内にそれぞれ収容されてなる集合型電池において、
前記集合型電池は、集電接続板を有し、
前記集電接続板は、各極板群の一方端には正極板、他方端には負極板にそれぞれ接合する集電板と、所定の極板群に接続する集電板の間を連結する接続板とから形成され、
複数の極板群を直列及び／又は並列に接続する状態に応じて所要位置の接続板を切断するように構成されてなることを特徴とする。
【０００８】
上記構成によれば、複数の極板群の正極板及び負極板には、複数の極板群を直列及び／又は並列に接続する状態に応じて互いに隣り合う極板群の集電板を接続板によって接続した集電接続板が接合されるので、複数の極板群を直列及び／又は並列に接続する工程が不要にして集合型電池を構成することができる。
【０００９】
また、集電接続板を共通部品として形成し、所要位置の接続板を切断することにより直列及び／又は並列接続状態に対応させることができる。
【００１０】
上記構成において、集電接続板の接続板部分は、集電板の板面と直交する面方向に形成することにより、隣り合う極板群収容空間にまたがって接続板を隔壁上を通過させるとき、接続板を通過させるために隔壁に形成される切欠は接続板の板厚に対応する窪みを形成するだけでよく隔壁の高さが減少することが少なく、極板群収容空間は極板群を収容する深さを充分に得て、注液時に収容部に入れる電解液の液面を群高さに対して最大限高くとることができ、極板群への電解液の含浸を充分に行なうことができる。
【００１１】
また、本願第２発明は、正極板と負極板がセパレータを介して一体化された、複数の極板群を電槽内の隔壁によって仕切られた複数の極板群収容空間内にそれぞれ収容し、集電接続板により複数の極板群を直列及び／又は並列に接続した集合型電池の製造方法において、
前記電槽内の複数の極板群収容空間に対応する複数の収容空間が形成された治具の前記各収容空間内にそれぞれ前記極板群を収容し、
各極板群の一方端には正極板、他方端には負極板にそれぞれ接合する集電板と、複数の極板群を直列及び／又は並列に接続する状態に応じて隣り合う極板群の集電板を接続する接続板とからなる集電接続板又は集電板を各極板群の正極板および負極板に接合して集合極板群に形成し、この集合電極板群を治具内から前記電槽内に移載し、各電極板群に電解液を注液した後、電槽の開口部を蓋体によって封止することを特徴とする。
【００１２】
上記製造方法によれば、複数の極板群は治具上において集電接続板又は集電板が接合されて集合極板群に形成されるので、この段階で複数の極板群は直列及び／又は並列に接続される。従って、組み立てられた集合極板群を電槽内に移載すると、電槽内への電解液に注入、蓋板による電槽を封止する工程により容易に集合型電池を製造することができる。
【００１３】
集合極板群の治具内から電槽内への移載は、治具上に電槽を重ね合わせた後、電槽及び治具を反転させて治具内から電槽内に集合極板群を移動させる方法、あるいは、集合極板群を治具内に保持した状態で反転させ、電槽上に移動して集合極板群を治具内から電槽内に移載することにより実施することができる。
【００１４】
【発明の実施の形態】
以下、添付図面を参照して本発明の実施形態について説明し、本発明の理解に供する。尚、以下に示す実施形態は本発明を具体化した一例であって、本発明の技術的範囲を限定するものではない。
【００１５】
図１は、本実施形態に係る集合型電池１の構成を示すもので、ニッケル−水素蓄電池として構成され、５個の極板群３を共通の電槽２内に収容して、単電池では出力電圧（公称電圧：１．２Ｖ）が小さいニッケル−水素蓄電池であっても、複数の単電池を組み合わせることなく比較的大きな動作電力を要求する電動機器などに適用することを可能にしたものである。
【００１６】
前記電槽２は、隔壁４によって内部を５つの極板群収容空間に仕切り、各極板群収容空間にそれぞれ極板群３を収容し、各極板群３を直列接続した両端を電槽２の両側面に設けた正極外部接続端子７及び負極外部接続端子８に接続し、各極板群３に電解液を含浸させた後、開口部を蓋板６によって閉じるように構成されている。
【００１７】
前記極板群３は、正極板と負極板とをセパレータを介して円筒状に巻回され、各極板群３の一方端には正極板、他方端には負極板に接合してそれぞれ集電板１０が接合される。５個の極板群３は、図２に示すように直列接続されるので、直列接続する隣り合う極板群３は、図３（ｂ）に示すように、集電板１０，１０の間が接続板１１で連結された集電接続板１２の一方の集電板１０が一方の極板群３の正極板に、他方の集電板１０が他方の極板群３の負極板に接合されることにより直列接続され、直列接続の正極側端となる極板群３の正極板及び負極側端となる極板群３の負極板には、図３（ａ）に示す集電板１０が接合される。
【００１８】
極板群３に対する集電板１０及び集電接続板１２の接合は、図４（ａ）に示すように、前記電槽２内への配列間隔で複数の極板群３を位置決め保持する治具１３上でなされる。治具１３の枠内には、５個の極板群３を位置決め収容する極板群収容凹部１６と、集電板１０を位置決め収容する集電板収容部１７と、集電接続板１２を位置決め収容する集電接続板収容部１８とが形成され、長側面には溶接電極が構成された溶接棒１５を枠内に進退移動させるための溶接棒出入口１９が形成されている。また、治具１３の底面には、５個の極板群３を一体に組み立てた後に電槽２内に移載するための吸着穴１４が形成されている。
【００１９】
図５（ａ）に示すように、集電板収容部１７及び集電接続板収容部１８にそれぞれ集電板１０、集電接続板１２を配置し、次いで極板群３を極板群収容凹部１６に位置決め配置する。次に、図５（ｂ）に示すように、治具１３の両側の溶接棒出入口１９から溶接棒１５を互いに対向方向に進出させて集電板１０及び集電接続板１２を極板群３の両端に圧接させ、溶接棒１５の溶接電極間に溶接電流を流して極板群３の正極板又は負極板に集電板１０又は集電接続板１２をシリーズ溶接する。図１（ｂ）に示すように、溶接は円周上に打痕２０として示される複数箇所（ここでは８箇所）でなされる。
【００２０】
集電板１０及び集電接続板１２が接合された５個の極板群３は、治具１３内に収容された状態で電槽２内に移載される。移載は、極板群３の配列間隔で配置された複数の吸着ノズル２１に、それぞれ真空負圧が加えて前記吸着穴１４から治具１３内に挿入し、吸着ノズル２１により各極板群３を吸着保持し、その状態で図６（ａ）に示すように治具１３を反転させ、吸着ノズル２１により極板群３及び治具１３を吊り下げた状態で電槽２上に移動し、図示するように治具１３を電槽２上に位置決めし、図６（ｂ）に示すように、吸着ノズル２１を進出させて極板群３を電槽２内に収納する。極板群３の移載を終えた吸着ノズル２１及び治具１３は、電槽２上から元の組み立て位置に戻し、次の組み立て及び移載の作業に備える。
【００２１】
電槽２には、図６に示すように、電槽２の側面に形成された正極端子穴２２に正極外部接続端子７が挿入され、電槽２の内面側で正極外部接続板２４が溶接される。同様に、負極端子穴２３に負極外部接続端子８が挿入され、電槽の内面側で負極外部接続板２５が溶接される。電槽２内に極板群３が収納された後、図１に示すように、正極外部接続板２４は集電板１０上に折り曲げられ、正極外部接続板２４と集電板１０との間が溶接接合される。同様に、負極外部接続板２５は集電接続板１２上に折り曲げられ、負極外部接続板２５と集電接続板１２との間が溶接接合される。
【００２２】
極板群３が収納された電槽２内には電解液が注入され、極板群３に電解液を含浸させた後、図１に示すように、電槽２の開口部は蓋板６によって封止される。蓋板６の中央には安全弁が設けられ、高温等の原因により電槽２内の内圧が異常上昇したとき、弁を開放して異常内圧を外部に放出して、破裂等の事故に至ることを防止している。
【００２３】
図１に示すように、集電接続板１２の接続板１１部分は、隔壁４の上面で互いに隣り合う極板群３の集電板１０を接続しているので、隔壁４の高さが充分に得られ、極板群３を充分に浸漬させることのできる液溜まりが形成され、極板群３への電解液の含浸が充分になされる。極板群３に電解液が含浸されると、余分な電解液が隔壁４の間に溜まることはなく、集合型電池１の傾きにより液絡が生じることはないが、集合接続板１２の接続板１１部分を伝って隣り合う極板群３間に電解液が流れる液絡を防止するため、接続板１１にガラスコートを施すことができる。
【００２４】
以上説明した構成において、治具１３上で組み立てられた極板群３を移載する動作は、上記方法に限定されるものでなく、治具１３上に上下反転させた状態の電槽２を被せ、治具１３と共に電槽２を反転させて電槽２内に極板群３を移し替えた後、治具１３を元の位置に移動させるようにしても同様の結果が得られる。また、蓋板６を治具１３の用も兼ねるように構成すると、蓋板６の内面上で極板群３を組み立て、蓋板６を電槽２に被せることによっても同様に結果が得られる。
【００２５】
また、上記構成は複数の極板群３を直列接続した実施形態を示したが、集電板１０の間を接続する接続板１１の形成位置によって複数の極板群３を並列又は直並列に接続することが可能である。例えば、図７は６個の極板群を２並列３直列に接続した集合型電池を模式的に示すもので、４個の集電板１０を接続板１１で接続した集電接続板１２０と、２個の集電板１０を接続板で接続した集電接続板１２とによって６個の極板群３を直並列に接続している。このように各極板群３にそれぞれ接合された集電板１０の接続板１１による接続状態に応じて複数の極板群３を直列及び／又は並列に接続して、任意の電圧と電池容量の集合型電池に構成することができる。
【００２６】
また、集電接続板１２、１２０は、並列配置された複数の極板群３それぞれに接合された集電板１０を全て接続板１１によって接続した構造に形成し、直列及び／又は並列接続する状態に応じて所要位置の接続板１１を切断により除去するように構成することもできる。例えば、図２に示した構成では、集電板１０単独のものと、集電接続板１２とを各極板群３に接合しているが、並列配置された５個の極板群３に接合する集電板１０を全て接続板１１で接続した１種類の部材を、極板群３への集電板１０の接合後に所要位置の接続板１１を切断して除去すると、結果的に図２に示す構成と同様の状態が得られる。集電接続板１２，１２０として複数種類のものを用意することがなく、極板群３への接合間違いや種類管理の手間を解消することができる。
【００２７】
【発明の効果】
以上の説明の通り本発明によれば、複数の極板群を直列及び／又は並列に接続する状態に応じて極板群に接合される集電板を接続板で接続した集電接続板を用いることにより、接続部材や溶接による接合を用いることなく複数の極板群を直列及び／又は並列に接続することができる。
【００２８】
複数の極板群を接続する工程は、治具上に複数の極板群を配置して集電板及び集電接続板の接合を行なった後、そのまま電槽内に移載するので、極板群の組み立て接続が容易で、少ない工数で集合型電池を製造することができる。
【図面の簡単な説明】
【図１】実施形態に係る集合型電池の構成を示す（ａ）は平面図、（ｂ）はＡ−Ａ線矢視断面ず、（ｃ）は側面図。
【図２】複数の極板群を直列接続する場合の集電接続板の接合を説明する模式図。
【図３】（ａ）は集電板、（ｂ）は集電接続板の構成を示す斜視図。
【図４】治具の構成を示す（ａ）は平面図、（ｂ）は側面図、（ｃ）は断面図。
【図５】極板群に対する集電板の接合を説明する説明図。
【図６】集合極板群の治具内から電槽内への移載方法を説明する説明図。
【図７】複数の極板群を直並列接続する場合の集電接続板の接合を説明する模式図。
【図８】従来技術に係る集合型電池の構成を示す断面図。
【符号の説明】
１集合型電池
２電槽
３極板群
４隔壁
６蓋板
１０集電板
１１接続板
１２集電接続板
１３治具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a collective battery in which a plurality of electrode plate groups are accommodated in a battery case, and a highly versatile voltage and battery capacity can be obtained without combining a plurality of single cells, and a method for manufacturing the same. .
[0002]
[Prior art]
Since a battery has a small electromotive force per unit cell, it is necessary to connect a plurality of unit cells in series and / or in parallel when applied as a battery power source for an electric device or the like that requires relatively large operating power. In order to configure such a battery power source that requires a relatively large amount of power, it is known to configure in the form of a collective battery in which a plurality of single cells are integrated.
[0003]
FIG. 8 shows a configuration example of a collective battery according to the prior art, in which a plurality of unit cells 106 configured as nickel-hydrogen storage batteries are accommodated in a common integrated battery case 102, and By connecting the cells 106 in series, a relatively large amount of power can be supplied from the external connection terminal 108 (see Patent Document 1). In FIG. 8, the integrated battery case 102 is partitioned by a partition wall 111 for each unit cell 106, and the electrode plate group 105 is accommodated in each space partitioned by the partition wall 111. In the electrode plate group 105, a positive electrode plate and a negative electrode plate are laminated via a separator, and a positive electrode current collector plate 131 connected to each positive electrode plate and a negative electrode current collector plate 132 connected to each negative electrode plate are respectively connected to the partition walls 111. The connecting protrusions 133 located at the formed openings face each other and are welded to each other, and the positive current collecting plate 131 or the negative current collecting plate 132 of the unit cell 106 located at both ends is connected to the integrated battery case 102. A plurality of single cells 106 are connected in series by welding to the external connection terminals 108 attached to both ends, so that a collective battery 100 that can output relatively large supply power from the external connection terminals 108 is configured.
[0004]
[Patent Document 1]
JP 2001-93508 A (pages 4-5, FIG. 8)
[0005]
[Problems to be solved by the invention]
As shown in the above conventional configuration, a collective battery requires a structure for connecting a plurality of electrode plate groups. As the connection structure, there are known a method by welding as shown in the above-mentioned conventional example and a method in which a connection plate is screwed externally so that many examples can be seen in a lead storage battery. However, there are problems that increase the number of parts and assembly man-hours for providing the connection structure, and in welding by welding, the welding quality appears as an increase or variation in connection resistance, which affects the quality of the collective battery. It was.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a collective battery and a method for manufacturing the same, by providing a connection structure on the current collector plate, eliminating the need for connection between a plurality of electrode plate groups, and reducing the number of manufacturing steps and providing stable performance. Is to provide.
[0007]
[Means for Solving the Problems]
First invention for achieving the above object, the positive electrode plate and the negative electrode plate is integrated with a separator, the electrode group of multiple is, a plurality of electrode plate group accommodated partitioned by a partition wall in the battery container In collective batteries each housed in a space,
The assembled battery has a current collector connection plate,
Before SL collector connection plate, connected to the current collector plate, between the current collector plate to be connected to a predetermined electrode plate group at one end of each electrode plate group positive electrode plate and the other end joined to the negative electrode plate Formed from a connecting plate,
It is configured to cut the connection plate at a required position in accordance with a state in which a plurality of electrode plate groups are connected in series and / or in parallel.
[0008]
According to the above configuration, the positive and negative electrode plates of the plurality of electrode plate groups are connected to the current collector plates of the electrode plate groups adjacent to each other according to the state in which the plurality of electrode plate groups are connected in series and / or in parallel. since connection beneath collector connection plate are joined by a plate, it is possible step of connecting a plurality of electrode plate group in series and / or parallel to constitute a collective cell and unnecessary.
[0009]
In addition, the current collector connection plate can be formed as a common component, and the connection plate at a required position can be cut to correspond to the series and / or parallel connection state.
[0010]
In the above configuration, when the connection plate portion of the current collector connection plate is formed in a surface direction orthogonal to the plate surface of the current collector plate, the connection plate is passed over the partition across the adjacent electrode plate group accommodation space. The notch formed in the partition wall for allowing the connection plate to pass therethrough only needs to form a recess corresponding to the plate thickness of the connection plate, and the height of the partition wall is less likely to decrease, and the electrode plate group accommodating space is the electrode plate group Can be obtained at a sufficient depth, and the liquid level of the electrolyte placed in the container during injection can be made as high as possible relative to the group height, so that the electrode plate group is sufficiently impregnated with the electrolyte. Can be done.
[0011]
Further, the present second invention, accommodating the positive electrode plate and the negative electrode plate is integrated with a separator, the plurality of electrode plate assembly housed in the space partitioned by the multiple partition walls of the conductive bath electrode plate group, respectively In the method of manufacturing a collective battery in which a plurality of electrode plate groups are connected in series and / or in parallel with a current collector connection plate ,
The electrode plate group is accommodated in each of the accommodation spaces of the jig in which a plurality of accommodation spaces corresponding to the plurality of electrode plate group accommodation spaces in the battery case are formed,
A current collector plate joined to the positive electrode plate at one end of each electrode plate group and a negative electrode plate at the other end, and adjacent electrode plate groups depending on the state in which a plurality of electrode plate groups are connected in series and / or in parallel A current collector connection plate or current collector plate composed of a connection plate for connecting the current collector plates is joined to the positive electrode plate and the negative electrode plate of each electrode plate group to form a collective electrode plate group. After being transferred from the inside of the tool into the battery case and injecting an electrolyte into each electrode plate group, the opening of the battery case is sealed with a lid.
[0012]
According to the above manufacturing method, the plurality of electrode plate groups are formed on the jig by connecting the current collector connection plate or the current collector plate on the jig. / Or connected in parallel. Therefore, when the assembled assembly electrode plate group is transferred into the battery case, the assembly type battery can be easily manufactured by the process of pouring into the electrolytic solution into the battery case and sealing the battery case with the cover plate. .
[0013]
To transfer the assembly electrode plate group from the jig to the battery case, after the battery case is overlaid on the jig, the battery case and the jig are reversed and the assembly electrode plate is transferred from the jig to the battery case. The method of moving the group, or by reversing the assembled electrode plate group held in the jig, moving it on the battery case and transferring the assembled electrode plate group from the jig to the battery case can do.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
[0015]
FIG. 1 shows a configuration of a collective battery 1 according to the present embodiment, which is configured as a nickel-hydrogen storage battery, and accommodates five electrode plate groups 3 in a common battery case 2. Even a nickel-hydrogen storage battery with a small output voltage (nominal voltage: 1.2V) can be applied to electric devices that require relatively large operating power without combining multiple cells. is there.
[0016]
The battery case 2 is divided into five electrode plate group receiving spaces by partition walls 4, each electrode group containing space is accommodated in each electrode plate group containing space, and both ends of each electrode plate group 3 connected in series are battery cases. 2 are connected to the positive electrode external connection terminal 7 and the negative electrode external connection terminal 8 provided on both side surfaces, and each electrode plate group 3 is impregnated with an electrolytic solution, and then the opening is closed by the cover plate 6. .
[0017]
The electrode plate group 3 is formed by winding a positive electrode plate and a negative electrode plate in a cylindrical shape with a separator interposed between the positive electrode plate and the negative electrode plate at one end of each electrode plate group 3. The electric plate 10 is joined. Since the five electrode plate groups 3 are connected in series as shown in FIG. 2, the adjacent electrode plate groups 3 connected in series are arranged between the current collecting plates 10 and 10 as shown in FIG. to but positive electrode plate of one of the current collector plate 10 is one of the electrode plate group 3 of consolidation has been collector connecting plate 12 in the connection plate 11, the other current collector plate 10 to the negative electrode plate of the other electrode plate group 3 The current collector plate shown in FIG. 3A is connected to the positive electrode plate 3 of the electrode plate group 3 that is connected in series by joining, and the negative electrode side of the electrode plate group 3 that is the negative electrode side end. 10 are joined.
[0018]
As shown in FIG. 4A, the current collector plate 10 and the current collector connection plate 12 are joined to the electrode plate group 3 by positioning and holding a plurality of electrode plate groups 3 at intervals in the battery case 2. Made on the tool 13. In the frame of the jig 13, an electrode plate group accommodating recess 16 for positioning and accommodating five electrode plate groups 3, a current collecting plate accommodating portion 17 for positioning and accommodating the current collecting plate 10, and a current collector connection plate 12 are provided. A current collector connecting plate housing portion 18 for positioning and housing is formed, and a welding rod inlet / outlet port 19 is formed on the long side surface for moving the welding rod 15 having a welding electrode forward and backward within the frame. Further, a suction hole 14 is formed on the bottom surface of the jig 13 for transferring the electrode plate group 3 into the battery case 2 after assembling the five electrode plate groups 3 together.
[0019]
As shown in FIG. 5A, the current collector plate 10 and the current collector connection plate 12 are disposed in the current collector plate housing portion 17 and the current collector connection plate housing portion 18 respectively, and then the electrode plate group 3 is accommodated in the electrode plate group. Positioned and arranged in the recess 16. Next, as shown in FIG. 5 (b), the welding rods 15 are advanced in opposite directions from the welding rod outlets 19 on both sides of the jig 13 so that the current collector plate 10 and the current collector connection plate 12 are connected to the electrode plate group 3. The current collector plate 10 or the current collector connection plate 12 is series-welded to the positive electrode plate or the negative electrode plate of the electrode plate group 3 by flowing a welding current between the welding electrodes of the welding rod 15. As shown in FIG. 1B, welding is performed at a plurality of locations (eight locations here) indicated as dents 20 on the circumference.
[0020]
The five electrode plate groups 3 to which the current collector plate 10 and the current collector connection plate 12 are joined are transferred into the battery case 2 while being accommodated in the jig 13. The transfer is performed by applying a vacuum negative pressure to each of the plurality of suction nozzles 21 arranged at the arrangement interval of the electrode plate group 3 and inserting the suction plate into the jig 13 from the suction hole 14. 3 is sucked and held, and the jig 13 is reversed as shown in FIG. 6A, and the electrode plate group 3 and the jig 13 are suspended by the suction nozzle 21 and moved onto the battery case 2. The jig 13 is positioned on the battery case 2 as shown in the figure, and the suction nozzle 21 is advanced to house the electrode plate group 3 in the battery case 2 as shown in FIG. The suction nozzle 21 and the jig 13 that have finished transferring the electrode plate group 3 are returned to the original assembly position from the top of the battery case 2 to prepare for the next assembly and transfer operation.
[0021]
As shown in FIG. 6, in the battery case 2, the positive electrode external connection terminal 7 is inserted into the positive electrode terminal hole 22 formed on the side surface of the battery case 2, and the positive electrode external connection plate 24 is welded on the inner surface side of the battery case 2. Is done. Similarly, the negative electrode external connection terminal 8 is inserted into the negative electrode terminal hole 23, and the negative electrode external connection plate 25 is welded on the inner surface side of the battery case. After the electrode plate group 3 is accommodated in the battery case 2, as shown in FIG. 1, the positive electrode external connection plate 24 is bent on the current collector plate 10, and between the positive electrode external connection plate 24 and the current collector plate 10. Are welded together. Similarly, the negative electrode external connection plate 25 is bent on the current collector connection plate 12, and the negative electrode external connection plate 25 and the current collector connection plate 12 are welded to each other.
[0022]
The electrolytic solution is injected into the battery case 2 in which the electrode plate group 3 is housed, and after the electrode plate group 3 is impregnated with the electrolyte solution, as shown in FIG. Is sealed. A safety valve is provided in the center of the cover plate 6 and when the internal pressure in the battery case 2 rises abnormally due to high temperature or the like, the valve is opened to release the abnormal internal pressure to the outside, leading to an accident such as a rupture. Is preventing.
[0023]
As shown in FIG. 1, the connection plate 11 portion of the current collector connection plate 12 connects the current collector plates 10 of the electrode plate group 3 adjacent to each other on the upper surface of the partition wall 4, so that the height of the partition wall 4 is sufficient. In this way, a liquid pool capable of sufficiently immersing the electrode plate group 3 is formed, and the electrode plate group 3 is sufficiently impregnated with the electrolytic solution. When the electrode plate group 3 is impregnated with the electrolyte solution, excess electrolyte solution does not accumulate between the partition walls 4, and no liquid junction occurs due to the inclination of the assembled battery 1. A glass coat can be applied to the connection plate 11 in order to prevent a liquid junction from flowing between the adjacent electrode plate groups 3 along the plate 11 portion.
[0024]
In the configuration described above, the operation of transferring the electrode plate group 3 assembled on the jig 13 is not limited to the above method, and the battery case 2 is turned upside down on the jig 13. The same result can be obtained even if the jig 13 is moved to the original position after the electrode case 2 is reversed with the jig 13 and the electrode group 3 is transferred into the battery case 2. If the cover plate 6 is also used for the jig 13, the same result can be obtained by assembling the electrode plate group 3 on the inner surface of the cover plate 6 and covering the cover plate 6 with the battery case 2. .
[0025]
Moreover, although the said structure showed embodiment which connected the some electrode group 3 in series, according to the formation position of the connection board 11 which connects between the current collecting boards 10, the some electrode group 3 is parallel or series-parallel. It is possible to connect. For example, FIG. 7 schematically shows a collective battery in which six electrode plate groups are connected in two parallel three series, and a current collector connection plate 120 in which four current collector plates 10 are connected by a connection plate 11; Six electrode plate groups 3 are connected in series and parallel by a current collector connection plate 12 in which two current collector plates 10 are connected by a connection plate. In this way, a plurality of electrode plate groups 3 are connected in series and / or in parallel according to the connection state by the connection plate 11 of the current collector plate 10 respectively joined to each electrode plate group 3, and an arbitrary voltage and battery capacity can be obtained. It can be configured as a collective battery.
[0026]
Further, the collector connection plates 12, 120 are formed on the connecting structure by a current collector plate 10 bonded to the plurality of electrode plate group 3 respectively arranged in parallel to all the connection plates 11, in series and / or Depending on the state of parallel connection, the connection plate 11 at a required position can be removed by cutting. For example, in the configuration shown in FIG. 2, the current collector plate 10 alone and the current collector connection plate 12 are joined to each electrode plate group 3, but the five electrode plate groups 3 arranged in parallel are connected. When one type of member in which the current collector plates 10 to be joined are all connected by the connection plate 11 is removed by cutting the connection plate 11 at a required position after the current collector plate 10 is joined to the electrode plate group 3, the result is shown in FIG. The same state as that shown in FIG. There is no need to prepare a plurality of types of current collecting connection plates 12 and 120, and it is possible to eliminate mistakes in joining to the electrode plate group 3 and trouble of type management.
[0027]
【The invention's effect】
According as the present invention explained above, the connection underneath collector connection plate a plurality of electrode plate group in series and / or current collecting plate being joined to the electrode plate group in accordance with the state connected in parallel with the connection plate By using, a plurality of electrode plate groups can be connected in series and / or in parallel without using a connecting member or welding.
[0028]
In the step of connecting a plurality of electrode plate groups, a plurality of electrode plate groups are arranged on a jig and the current collector plate and the current collector connection plate are joined, and then transferred to the battery case as they are. Assembly and connection of the plate group is easy, and the assembled battery can be manufactured with a small number of man-hours.
[Brief description of the drawings]
FIG. 1A is a plan view showing a configuration of a collective battery according to an embodiment, FIG. 1B is a cross-sectional view taken along line AA, and FIG.
FIG. 2 is a schematic diagram illustrating joining of current collector connection plates when a plurality of electrode plate groups are connected in series.
3A is a perspective view showing a configuration of a current collector plate, and FIG. 3B is a configuration diagram of a current collector connection plate.
4A is a plan view, FIG. 4B is a side view, and FIG.
FIG. 5 is an explanatory view for explaining the joining of the current collector plate to the electrode plate group.
FIG. 6 is an explanatory diagram for explaining a method of transferring the assembly electrode plate group from the jig to the battery case.
FIG. 7 is a schematic diagram for explaining joining of current collector connection plates when a plurality of electrode plate groups are connected in series and parallel.
FIG. 8 is a cross-sectional view showing the configuration of a collective battery according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Collective type battery 2 Battery case 3 Electrode plate group 4 Bulkhead 6 Lid plate 10 Current collector plate 11 Connection plate 12 Current collector connection plate 13 Jig

Claims

正極板と負極板がセパレータを介して一体化された、複数の極板群が、電槽内の隔壁によって仕切られた複数の極板群収容空間内にそれぞれ収容されてなる集合型電池において、前記集合型電池は、集電接続板を有し、
前記集電接続板は、各極板群の一方端には正極板、他方端には負極板にそれぞれ接合する集電板と、所定の極板群に接続する集電板の間を連結する接続板とから形成され、
複数の極板群を直列及び／又は並列に接続する状態に応じて所要位置の接続板を切断するように構成されてなることを特徴とする集合型電池。Positive and negative electrode plates are integrated with the separator, electrode plate group of multiple is in the set battery made respectively stored in a plurality of electrode plate assembly housed in a space partitioned by a partition wall in the battery container The assembled battery has a current collector connection plate,
Before SL collector connection plate, connected to the current collector plate, between the current collector plate to be connected to a predetermined electrode plate group at one end of each electrode plate group positive electrode plate and the other end joined to the negative electrode plate Formed from a connecting plate,
A collective battery comprising: a plurality of electrode plate groups connected to each other in series and / or connected in parallel according to a state in which the connection plate is cut.

集電接続板の接続板部分は、集電板の板面と直交する面方向に形成されてなる請求項１に記載の集合型電池。 The assembled battery according to claim 1, wherein the connection plate portion of the current collector connection plate is formed in a surface direction orthogonal to the plate surface of the current collector plate.

正極板と負極板がセパレータを介して一体化された、複数の極板群を電槽内の隔壁によって仕切られた複数の極板群収容空間内にそれぞれ収容し、集電接続板により複数の極板群を直列及び／又は並列に接続した集合型電池の製造方法において、
前記電槽内の複数の極板群収容空間に対応する複数の収容空間が形成された治具の前記各収容空間内にそれぞれ前記極板群を収容し、
各極板群の一方端には正極板、他方端には負極板にそれぞれ接合する集電板と、複数の極板群を直列及び／又は並列に接続する状態に応じて隣り合う極板群の集電板を接続する接続板とからなる集電接続板又は集電板を各極板群の正極板および負極板に接合して集合極板群に形成し、この集合電極板群を治具内から前記電槽内に移載し、各電極板群に電解液を注液した後、電槽の開口部を蓋体によって封止することを特徴とする集合型電池の製造方法。Positive and negative electrode plates are integrated with a separator, accommodated in a plurality of electrode plate assembly housed in a space partitioned by the multiple partition walls of the conductive bath electrode group, the plurality by collector connection plate In the method of manufacturing a collective battery in which the electrode plate groups are connected in series and / or in parallel,
The electrode plate group is accommodated in each of the accommodation spaces of the jig in which a plurality of accommodation spaces corresponding to the plurality of electrode plate group accommodation spaces in the battery case are formed,
A current collector plate joined to the positive electrode plate at one end of each electrode plate group and a negative electrode plate at the other end, and adjacent electrode plate groups depending on the state in which a plurality of electrode plate groups are connected in series and / or in parallel A current collector connection plate or current collector plate composed of a connection plate for connecting the current collector plates is joined to the positive electrode plate and the negative electrode plate of each electrode plate group to form a collective electrode plate group. A method for producing a collective battery, wherein the battery pack is transferred from the inside of the tool into the battery case, an electrolyte is injected into each electrode plate group, and the opening of the battery case is sealed with a lid.

集合極板群の治具内から電槽内への移載は、治具上に電槽を重ね合わせた後、電槽及び治具を反転させて治具内から電槽内に集合極板群を移動させる請求項３に記載の集合型電池の製造方法。 To transfer the assembly electrode plate group from the jig to the battery case, after the battery case is overlaid on the jig, the battery case and the jig are reversed and the assembly electrode plate is transferred from the jig to the battery case. The method for producing an assembled battery according to claim 3, wherein the group is moved.

集合極板群の治具内から電槽内への移載は、集合極板群を治具内に保持した状態で反転させ、電槽上に移動して集合極板群を治具内から電槽内に移載する請求項３に記載の集合型電池の製造方法。 To transfer the assembly electrode plate group from the jig to the battery case, the assembly electrode plate group is reversed with the assembly electrode plate held in the jig, and moved to the battery case to move the assembly electrode plate group from the jig. The method for manufacturing a collective battery according to claim 3, which is transferred into the battery case.