JP2003346770A - Battery - Google Patents
BatteryInfo
- Publication number
- JP2003346770A JP2003346770A JP2002151808A JP2002151808A JP2003346770A JP 2003346770 A JP2003346770 A JP 2003346770A JP 2002151808 A JP2002151808 A JP 2002151808A JP 2002151808 A JP2002151808 A JP 2002151808A JP 2003346770 A JP2003346770 A JP 2003346770A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- battery
- plate
- connecting plate
- power generating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 claims description 45
- 239000002184 metal Substances 0.000 claims description 45
- 238000003466 welding Methods 0.000 claims description 15
- 239000011888 foil Substances 0.000 abstract description 47
- 239000011255 nonaqueous electrolyte Substances 0.000 description 21
- 238000010248 power generation Methods 0.000 description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 239000003566 sealing material Substances 0.000 description 10
- 229910000881 Cu alloy Inorganic materials 0.000 description 8
- 239000011889 copper foil Substances 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- 239000008151 electrolyte solution Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 101000777301 Homo sapiens Uteroglobin Proteins 0.000 description 1
- 102100031083 Uteroglobin Human genes 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、巻回型や積層型の
発電要素の電極を集電接続体を介して端子に接続する電
池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery for connecting electrodes of a wound or laminated power generating element to a terminal through a current collector.
【０００２】[0002]
【従来の技術】図３に、大型の非水電解質二次電池にお
ける従来の発電要素１と集電接続板２と端子３との接続
構造を示す。この非水電解質二次電池は、２個の長円筒
形の発電要素１を並べ並列接続したものである。各発電
要素１は、正極１ａと負極１ｂをセパレータを介して長
円筒形に巻回したものであり、正極１ａは帯状のアルミ
ニウム箔の表面に正極活物質を担持させ、負極１ｂは帯
状の銅箔の表面に負極活物質を担持させたものである。
ただし、これらの正極１ａと負極１ｂは、それぞれ帯状
の片方の側端部に活物質を塗布しない未塗工部を設けて
おき、この未塗工部でアルミニウム箔と銅箔が露出する
ようにしている。そして、これらの正極１ａと負極１ｂ
は、発電要素１の巻回の際に、巻回軸に沿って互いに反
対方向にずらすことにより、長円筒形の一方（図示右
下）の端面には正極１ａの側端部のアルミニウム箔のみ
がはみ出し、他方（図示左上）の端面には負極１ｂの側
端部の銅箔のみがはみ出すようにしている。2. Description of the Related Art FIG. 3 shows a conventional connection structure between a power generating element 1, a current collecting connecting plate 2 and a terminal 3 in a large non-aqueous electrolyte secondary battery. This non-aqueous electrolyte secondary battery has two long cylindrical power generating elements 1 arranged in parallel and connected in parallel. Each power generating element 1 is obtained by winding a positive electrode 1a and a negative electrode 1b in a long cylindrical shape with a separator interposed therebetween. The positive electrode 1a has a positive electrode active material carried on the surface of a strip-shaped aluminum foil, and the negative electrode 1b has a strip-shaped copper. The negative electrode active material is supported on the surface of the foil.
However, each of the positive electrode 1a and the negative electrode 1b is provided with an uncoated portion to which the active material is not applied at one side end of the strip, and the aluminum foil and the copper foil are exposed at the uncoated portion. ing. Then, these positive electrode 1a and negative electrode 1b
Is displaced in opposite directions along the winding axis when the power generating element 1 is wound, so that only one aluminum foil at the side end of the positive electrode 1a is provided on one end face (lower right in the figure) of the long cylindrical shape. Only the copper foil on the side end of the negative electrode 1b protrudes from the other end face (upper left in the figure).
【０００３】上記２個の発電要素１，１は、長円筒形の
平坦な側面同士が直立して重なり合うように横置きに並
べられる。そして、これらの発電要素１，１の双方の端
面で、それぞれ波板状の集電接続板２，２に、各発電要
素１の端面からはみ出した正極１ａのアルミニウム箔や
負極１ｂの銅箔を接続するようになっている。各集電接
続板２は、２枚の金属板を波板状の凹凸に成形し、これ
らの端部同士を重ね合わせると共に、この合わせ部の上
端に端子３を接続固定したものである。そして、正極側
となる端子３を接続固定した集電接続板２は、波板状の
各凹部に発電要素１，１の一方の端面からはみ出した正
極１ａのアルミニウム箔を挟み込んで超音波溶接により
接続固定し、負極側となる端子３を接続固定した集電接
続板２は、波板状の各凹部に発電要素１，１の他方の端
面からはみ出した負極１ｂの銅箔を挿入して超音波溶接
により接続固定している。[0003] The two power generating elements 1 and 1 are arranged side by side so that flat sides of a long cylinder shape are overlapped upright. Then, the aluminum foil of the positive electrode 1a and the copper foil of the negative electrode 1b protruding from the end faces of the power generating elements 1 are respectively attached to the end faces of the power generating elements 1 and 1, respectively, on the corrugated current collecting connecting plates 2 and 2 at the end faces. It is supposed to connect. Each current collecting connection plate 2 is formed by shaping two metal plates into corrugated irregularities, overlapping these ends, and connecting and fixing the terminal 3 to the upper end of the joint. Then, the current collecting connecting plate 2 to which the terminal 3 on the positive electrode side is connected and fixed is sandwiched by the aluminum foil of the positive electrode 1a protruding from one end face of the power generating elements 1 and 1 in each of the corrugated plate-shaped concave portions and ultrasonically welded. The current collector connecting plate 2 to which the connection and fixing are performed and the terminal 3 on the negative electrode side is connected and fixed is formed by inserting the copper foil of the negative electrode 1b protruding from the other end face of the power generating elements 1 and 1 into each of the corrugated concave portions. The connection is fixed by sonic welding.
【０００４】上記２個の発電要素１は、図示しない筐体
状の電池容器に収納され、この電池容器の上端開口部が
蓋板によって塞がれる。この際、端子３，３の上端部
は、絶縁封止材を介してこの蓋板を貫通し外部に突出す
るようになっている。そして、この電池容器と蓋板から
なる電池外装体の内部に電解液が充填され封止されるこ
とにより非水電解質二次電池となる。[0004] The two power generating elements 1 are housed in a case-shaped battery container (not shown), and the upper end opening of the battery container is closed by a lid plate. At this time, the upper ends of the terminals 3 and 3 penetrate the cover plate via an insulating sealing material and protrude to the outside. Then, a non-aqueous electrolyte secondary battery is obtained by filling and sealing the electrolytic solution inside the battery outer package including the battery container and the cover plate.
【０００５】従って、上記非水電解質二次電池は、２個
の発電要素１，１を長円筒形の平坦な側面が直立するよ
うに横置きに並べて収納し、しかも、端子３，３が電池
外装体の上面の両端部から上方に突設されるので、設置
のスペース効率が良いものとなる。Therefore, in the above nonaqueous electrolyte secondary battery, the two power generating elements 1, 1 are housed side by side so that the long side surfaces of the long cylindrical shape stand upright. Since it is projected upward from both ends of the upper surface of the exterior body, space efficiency of installation is good.
【０００６】[0006]
【発明が解決しようとする課題】ところが、上記非水電
解質二次電池は、上方に突出する端子３に接続された集
電接続板２を横置きの発電要素１の正極１ａや負極１ｂ
における直線部の垂直になって重なり合った部分に沿わ
せて接続するために、波板状の複雑な形状の板材を組み
合わせたり、端子３にも接続し難い形状にならざるを得
ないため、作製が困難になるという問題があった。However, in the above non-aqueous electrolyte secondary battery, the current collector connecting plate 2 connected to the terminal 3 protruding upward has the positive electrode 1a and the negative electrode 1b of the power generating element 1 placed horizontally.
In order to connect along the vertical and overlapping portions of the straight line portion in the above, it is necessary to combine a corrugated plate material having a complicated shape or to make the shape difficult to connect to the terminal 3. There was a problem that it became difficult.
【０００７】しかも、集電接続板２は、電流容量を高め
るために、波板状の部分の板厚もある程度厚くする必要
があり、薄いアルミニウム箔や銅箔を挟み込んで超音波
溶接を行なっても十分に溶着させることができないとい
う問題も生じていた。また、この集電接続板２は、２個
の発電要素１ごとに幾重にも重なり合ったアルミニウム
箔や銅箔を波板状の各凹部に同時に挿入して挟み込む必
要があり、この組み立て時の作業性が悪くなるという問
題もあった。In addition, in order to increase the current carrying capacity of the current collecting connection plate 2, it is necessary to increase the thickness of the corrugated portion to some extent, and ultrasonic welding is performed by sandwiching a thin aluminum foil or copper foil. However, there has also been a problem that welding cannot be performed sufficiently. In addition, it is necessary to insert the aluminum foil or the copper foil, which overlaps several times for each of the two power generation elements 1, into each of the corrugated plate-shaped recesses at the same time to sandwich the current collecting connection plate 2. There was also a problem that the property became worse.
【０００８】本発明は、かかる事情に対処するためにな
されたものであり、集電接続板の本体から折れ曲がりね
じれて突設された接続板部に発電要素の電極を沿わせて
接続することにより、この集電接続板を作製容易なもの
にすると共に集電効率を高めることができる電池を提供
することを目的としている。The present invention has been made in order to cope with such a situation. By connecting the electrodes of the power generation element along the connecting plate portion which is bent and twisted from the main body of the current collecting connecting plate and protrudes. It is another object of the present invention to provide a battery that can easily manufacture the current collecting connection plate and can improve current collecting efficiency.
【０００９】[0009]
【課題を解決するための手段】請求項１の電池は、金属
板からなる集電接続板の本体を端子に接続すると共に発
電要素の端部に沿わせて配置し、この本体の端縁部から
発電要素の端面側に向けて折れ曲がると共にほぼ９０度
ねじれて突設された１本以上の細長い板状の接続板部を
発電要素の端面から突出する電極に沿わせて接続したこ
とを特徴とする。According to a first aspect of the present invention, there is provided a battery in which a main body of a current collecting and connecting plate made of a metal plate is connected to a terminal and arranged along an end of a power generating element. And at least one elongated plate-like connecting plate portion which is bent toward the end face side of the power generating element and twisted by about 90 degrees and connected along an electrode protruding from the end face of the power generating element. I do.
【００１０】請求項１の発明によれば、集電接続板の接
続板部が本体の端縁部から発電要素の端面上に向けて折
れ曲がると共に９０度ねじれて突設されているので、発
電要素の端面から突出しこの本体にほぼ直交する電極の
接続部を接続板部の板面に沿わせて接続することができ
るようになる。このため、金属板を例えば打ち抜き・曲
げ・ねじり加工しただけの簡単な構造の集電接続板を用
いて、効率のよい集電を行うことができるようになる。
しかも、この集電接続板の接続板部に発電要素の電極を
沿わせて接続するので、この接続を確実なものにするこ
ともできる。According to the first aspect of the present invention, the connecting plate portion of the current collecting connecting plate is bent from the edge of the main body toward the end face of the power generating element and twisted by 90 degrees so as to protrude. The connection portion of the electrode projecting from the end surface of the connection plate and substantially orthogonal to the main body can be connected along the plate surface of the connection plate portion. For this reason, efficient current collection can be performed using a current collection connection plate having a simple structure in which a metal plate is simply punched, bent, or twisted.
In addition, since the electrode of the power generation element is connected to the connection plate portion of the current collection connection plate along the connection plate portion, the connection can be ensured.
【００１１】請求項２の電池は、前記集電接続板の本体
から１対以上の接続板部が突設されると共に、各対の２
本の接続板部が互いに向かい合う側辺を発電要素の端面
とは反対側に回転させることにより逆向きにねじったも
のであることを特徴とする。In the battery according to the present invention, at least one pair of connecting plate portions is protruded from the main body of the current collecting connecting plate, and each pair of the connecting plate portions has a plurality of connecting plate portions.
The book is characterized in that the connecting plate portions are twisted in opposite directions by rotating the sides facing each other to the side opposite to the end face of the power generating element.
【００１２】請求項２の発明によれば、接続板部が対と
なって２本ずつ突設されるので、これら２本の接続板部
の間に発電要素の端面から突出する電極を挿入し接続作
業を行うことにより、接続作業を容易にすることができ
る。しかも、対となる２本の接続板部は、発電要素の電
極が間に挿入され易い方向にねじれているので、集電接
続板を発電要素に取り付ける作業も容易になる。According to the second aspect of the present invention, since two connecting plate portions are provided so as to protrude in pairs, an electrode projecting from the end face of the power generating element is inserted between these two connecting plate portions. By performing the connection operation, the connection operation can be facilitated. In addition, since the two connection plate portions forming a pair are twisted in a direction in which the electrodes of the power generation element are easily inserted therebetween, the work of attaching the current collection connection plate to the power generation element is also facilitated.
【００１３】請求項３の電池は、前記各接続板部の９０
度のねじれ部の突出方向における長さがこの接続板部の
板厚よりも長いことを特徴とする。According to a third aspect of the present invention, there is provided the battery according to
The length of the twisted portion in the protruding direction is longer than the thickness of the connecting plate portion.
【００１４】請求項３の発明によれば、接続板部のねじ
れ部が板厚に対して十分な長さとなるので、短い間で急
峻なねじり加工を行うことによりこの接続板部のねじれ
部に応力が集中して導電性が低下し電池の内部抵抗が高
くなるのを防止することができる。According to the third aspect of the present invention, the torsion portion of the connection plate portion has a sufficient length with respect to the plate thickness. It is possible to prevent the concentration of the stress from lowering the conductivity and increasing the internal resistance of the battery.
【００１５】請求項４の電池は、端子に接続された集電
接続体の接続板部に、長円筒形の発電要素の端面から突
出した電極の直線部を沿わせ、これら接続板部と電極の
直線部とを挟持板の間に挟み込んで溶着又は圧着により
接続した電池において、挟持板の長さが電極の直線部の
長さよりも短いことを特徴とする。According to a fourth aspect of the present invention, there is provided a battery, wherein a straight portion of an electrode protruding from an end face of a long cylindrical power generating element is arranged along a connecting plate portion of a current collector connected to a terminal. In a battery in which the straight portion is sandwiched between the holding plates and connected by welding or pressure bonding, the length of the holding plate is shorter than the length of the straight portion of the electrode.
【００１６】請求項４の発明によれば、挟持板が長円筒
形に突出した電極の直線部だけを接続板部と共に挟み込
むようにすることができる。従って、この挟持板が電極
の湾曲部まで挟み込んで、この電極を無理に引っ張り破
損させるようなことがなくなる。According to the fourth aspect of the present invention, it is possible to sandwich only the linear portion of the electrode, the holding plate of which protrudes in a long cylindrical shape, together with the connection plate portion. Therefore, it is possible to prevent the sandwiching plate from sandwiching the curved portion of the electrode and forcibly pulling and damaging the electrode.
【００１７】請求項５の電池は、絶縁封止されて電池外
装体の外部に突出する電池引出端子と、この電池外装体
の外部に配置され、この電池引出端子の外部突出部に接
続固定された端子接続部材を介して接続された外部接続
端子を備えた電池において、外部接続端子が端子接続部
材に接続固定されたことを特徴とする。A battery according to a fifth aspect of the present invention is a battery lead-out terminal that is insulated and sealed and protrudes outside the battery outer casing, and is disposed outside the battery outer casing and is connected and fixed to an external protruding portion of the battery lead-out terminal. In the battery provided with the external connection terminal connected via the terminal connection member, the external connection terminal is connected and fixed to the terminal connection member.
【００１８】請求項５の発明によれば、外部接続端子が
端子接続部材に係止されるだけでなく、確実に接続固定
されるので、外部回路の接続部材が端子接続部材に直接
接触する部分だけでなく、外部接続端子が直接又は締め
付け部材等を介して外部回路の接続部材に接触する部分
にも充放電電流が確実に流れるようになり、端子での接
触抵抗を低減して電池性能を向上させることができるよ
うになる。According to the fifth aspect of the present invention, the external connection terminal is not only locked to the terminal connection member but also securely connected and fixed, so that the connection member of the external circuit directly contacts the terminal connection member. In addition, the charging / discharging current flows reliably to the part where the external connection terminal comes into contact with the connection member of the external circuit directly or via a fastening member, etc., thereby reducing the contact resistance at the terminal and improving the battery performance. Can be improved.
【００１９】[0019]
【発明の実施の形態】以下、本発明の実施形態について
図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００２０】図１〜図２は本発明の一実施形態を示すも
のであって、図１は非水電解質二次電池の発電要素と端
子との接続構造を示す組み立て斜視図、図２は非水電解
質二次電池の構造を示す組み立て斜視図である。なお、
図３に示した従来例と同様の機能を有する構成部材には
同じ番号を付記する。FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 is an assembled perspective view showing a connection structure between a power generation element and a terminal of a nonaqueous electrolyte secondary battery, and FIG. It is an assembly perspective view showing the structure of a water electrolyte secondary battery. In addition,
Components having the same functions as those of the conventional example shown in FIG. 3 are denoted by the same reference numerals.
【００２１】本実施形態は、従来例と同様に大型の非水
電解質二次電池について説明する。この非水電解質二次
電池は、図１に示すように、２個の長円筒形の発電要素
１，１を並べて並列接続したものである。各発電要素１
は、従来例と同じ構成であり、長円筒形の一方の端面か
らは正極１ａの側端部のアルミニウム箔がはみ出すと共
に、他方の端面からは負極１ｂの側端部の銅箔がはみ出
すようになっている。In this embodiment, a large non-aqueous electrolyte secondary battery will be described as in the conventional example. As shown in FIG. 1, this non-aqueous electrolyte secondary battery has two long cylindrical power generating elements 1, 1 arranged side by side and connected in parallel. Each power generation element 1
Has the same configuration as that of the conventional example, in which the aluminum foil at the side end of the positive electrode 1a protrudes from one end surface of the long cylindrical shape, and the copper foil at the side end of the negative electrode 1b protrudes from the other end surface. Has become.
【００２２】上記２個の発電要素１，１は、長円筒形の
平坦な側面同士が直立して重なり合うように横置きに並
べられる。そして、これら２個の発電要素１，１の両端
部にそれぞれ集電接続板２，２が配置されている。集電
接続板２，２は、それぞれ大きな電流容量が得られるよ
うに十分な厚さの金属板が使用され、発電要素１の一方
の端部に配置する正極１ａ側のものはアルミニウム合金
板からなり、他方の端部に配置する負極１ｂ側のものは
銅合金板からなる。各集電接続板２は、ほぼ台形状の水
平に配置された本体２ａと、この本体の台形状の底辺部
から下方に向けて突設された４本の細長い接続板部２ｂ
とからなる。また、各接続板部２ｂには、板面から突出
する凸部が適宜間隔で複数箇所ずつ形成されている。即
ち、各集電接続板２は、アルミニウム合金板や銅合金板
を、台形状の本体２ａとこの台形状の底辺部から櫛歯状
に真っ直ぐ伸びた細長い４本の接続板部２ｂとをプレス
加工により打ち抜くと共に各接続板部２ｂに凸部を形成
し、これらの接続板部２ｂを基部で本体２ａに対して直
角に折り曲げ、折り曲げた各接続板部２ｂを基部でそれ
ぞれ９０度ねじることにより形成される。また、これら
４本の接続板部２ｂは、左右の２本ずつが対となり、各
対の２本の接続板部２ｂの向かい合う側辺が本体２ａ側
とは反対方向に回転するようにねじっている。そして、
各接続板部２ｂの凸部は、このねじりによって、対とな
るもの同士が向かい合う方向に突出するように突設され
ている。The two power generating elements 1 and 1 are arranged side by side so that the flat surfaces of the long cylinders are overlapped upright. Then, current collecting connecting plates 2 and 2 are arranged at both ends of the two power generating elements 1 and 1, respectively. The current collecting connection plates 2 and 2 are each made of a metal plate having a sufficient thickness so as to obtain a large current capacity, and the positive electrode 1a side disposed at one end of the power generating element 1 is made of an aluminum alloy plate. The negative electrode 1b disposed at the other end is made of a copper alloy plate. Each of the current collecting connecting plates 2 has a substantially trapezoidal horizontally arranged main body 2a and four elongated connecting plate portions 2b projecting downward from the trapezoidal bottom of the main body.
Consists of In each connection plate 2b, a plurality of protrusions protruding from the plate surface are formed at appropriate intervals. That is, each current collecting connecting plate 2 is formed by pressing an aluminum alloy plate or a copper alloy plate with a trapezoidal main body 2a and four elongated connecting plate portions 2b extending straight in a comb-like shape from the bottom of the trapezoidal shape. By punching out by processing and forming a convex portion on each connecting plate portion 2b, bending these connecting plate portions 2b at right angles to the main body 2a at the base, and twisting each bent connecting plate portion 2b at the base by 90 degrees. It is formed. The four connecting plate portions 2b are twisted such that the left and right two connecting plate portions 2b are paired, and the opposite sides of the two connecting plate portions 2b of each pair rotate in the opposite direction to the main body 2a side. I have. And
The projecting portion of each connection plate portion 2b is projectingly provided by the torsion so that a paired member projects in a direction facing each other.
【００２３】上記各接続板部２ｂのねじれ部の突出方向
における長さＬは、この接続板部２ｂの板厚Ｔよりも長
くなるようにしている。これは、長さＬが板厚Ｔよりも
短い場合には、この接続板部２ｂに急峻なねじり加工が
加えられねじれ部に応力が集中して導電性が低下するか
らである。The length L in the projecting direction of the torsion portion of each connection plate portion 2b is set to be longer than the plate thickness T of this connection plate portion 2b. This is because, when the length L is shorter than the plate thickness T, the connecting plate portion 2b is sharply twisted, stress is concentrated on the twisted portion, and the conductivity is reduced.
【００２４】上記各集電接続板２は、２個の発電要素
１，１の双方の端部の上方に本体２ａを配置すると共
に、接続板部２ｂがこれらの発電要素１，１の端面に沿
って配置されるようにする。即ち、各発電要素１の正極
１ａのアルミニウム箔がはみ出す端面側には、アルミニ
ウム合金板からなる集電接続板２が配置され、負極１ｂ
の銅箔がはみ出す端面側には、銅合金板からなる集電接
続板２が配置される。また、対となる２本の接続板部２
ｂは、各発電要素１の端面から突出する正極１ａや負極
１ｂの金属箔の両脇に配置される。ここで、各発電要素
１の双方の端面には、正極１ａや負極１ｂの金属箔が巻
回された状態で長円筒形にはみ出して突出しているの
で、これらの金属箔が長円筒形の湾曲部の間の直線部で
垂直になり重なり合った部分は、巻回軸を中心にして左
右に二等分することができる。そして、各発電要素１の
端面ごとに配置された対となる２本の接続板部２ｂは、
これら左右に分かれた金属箔の重なりの外側にそれぞれ
配置される。この際、対となる２本の接続板部２ｂは、
元々向かい合っていた内側の側辺が発電要素１から逃げ
るような方向にねじられているので、各発電要素１の端
面から突出する金属箔の特に上側の湾曲部が各対の２本
の接続板部２ｂの間に自然に嵌まり込むようになる。In each of the current collecting connecting plates 2, a main body 2 a is disposed above both ends of the two power generating elements 1, 1, and a connecting plate 2 b is provided on an end face of these power generating elements 1, 1. So that they are arranged along. That is, the current collector connecting plate 2 made of an aluminum alloy plate is disposed on the end face side of the positive electrode 1a of each power generating element 1 where the aluminum foil protrudes, and the negative electrode 1b
The current collector connecting plate 2 made of a copper alloy plate is arranged on the end face side where the copper foil protrudes. In addition, two connecting plate portions 2 to be paired
b are disposed on both sides of the metal foil of the positive electrode 1a and the negative electrode 1b protruding from the end face of each power generating element 1. Here, since the metal foils of the positive electrode 1a and the negative electrode 1b are wound and protrude from both ends of each power generating element 1 in a state where the metal foils are wound, these metal foils are bent into a long cylindrical shape. The vertically overlapping portion of the straight portion between the portions can be bisected left and right about the winding axis. Then, two paired connection plate portions 2b arranged for each end face of each power generation element 1 are:
These metal foils are arranged outside the overlap of the left and right metal foils. At this time, the two connecting plate portions 2b forming a pair are
Since the inner sides that originally face each other are twisted in such a direction as to escape from the power generating elements 1, particularly the upper curved portion of the metal foil protruding from the end face of each power generating element 1 has two connecting plates of each pair. It fits naturally between the parts 2b.
【００２５】このようにして集電接続板２が配置される
と、発電要素１の正極１ａと負極１ｂの金属箔が挟持板
４によって各接続板部２ｂに接続固定される。即ち、各
発電要素１の各端面では、まず金属箔の直線部の重なり
を左右に分けて、それぞれの側の接続板部２ｂに沿わ
せ、これらの接続板部２ｂと金属箔とを挟持板４の間に
挟んで挟持させる。すると、これにより対となる２本の
接続板部２ｂの内側の面には、それぞれ左右半分ずつの
金属箔の重なりが密着することになる。そして、このよ
うにして接続板部２ｂと金属箔を挟持した各挟持板４の
両側から超音波溶接を行うことにより、これら接続板部
２ｂと正極１ａや負極１ｂの金属箔とが接合される。各
挟持板４は、短冊状の比較的薄い金属板を長手方向に沿
って中央で二つ折りにしたものであり、正極１ａ側には
アルミニウム合金板の挟持板４が用いられ、負極１ｂ側
には銅合金板の挟持板４が用いられる。これらの挟持板
４は、接続板部２ｂと金属箔とを溶着して確実に接続固
定するためだけに用いられるので、電流容量を特に大き
くする必要はなく、最適な超音波溶接が可能となるよう
な適度な厚さの金属板を用いることができる。また、各
接続板部２ｂには、金属箔と重なり合う内側の面に凸部
が形成されているので、これらの金属箔が各凸部で集中
的に超音波のエネルギーを受けるようになり、溶着を確
実にすることができる。When the current collecting connecting plate 2 is arranged in this manner, the metal foils of the positive electrode 1a and the negative electrode 1b of the power generating element 1 are connected and fixed to each connecting plate portion 2b by the holding plate 4. That is, on each end face of each power generating element 1, first, the overlap of the linear portions of the metal foil is divided into right and left portions, and the overlapping portions are arranged along the connection plate portions 2b on the respective sides. 4 between them. As a result, the left and right halves of the metal foils are brought into close contact with the inner surfaces of the two connection plate portions 2b forming a pair. Then, by performing ultrasonic welding from both sides of each holding plate 4 holding the connecting plate portion 2b and the metal foil in this manner, the connecting plate portion 2b and the metal foils of the positive electrode 1a and the negative electrode 1b are joined. . Each of the holding plates 4 is a strip-shaped relatively thin metal plate that is folded in half along the longitudinal direction at the center. The holding plate 4 of an aluminum alloy plate is used on the positive electrode 1a side, and the holding plate 4 is on the negative electrode 1b side. Is a holding plate 4 made of a copper alloy plate. Since these holding plates 4 are used only for securely connecting and fixing the connecting plate portion 2b and the metal foil, the current capacity does not need to be particularly large, and optimal ultrasonic welding can be performed. A metal plate having such an appropriate thickness can be used. In addition, since convex portions are formed on the inner surface of each connecting plate portion 2b that overlaps with the metal foil, these metal foils receive ultrasonic energy intensively at each convex portion, and are welded. Can be ensured.
【００２６】上記挟持板４は、発電要素１の端面から突
出する正極１ａや負極１ｂの金属箔の円筒形における直
線部の長さよりも短いものが用いられる。このようにす
れば、挟持板４が金属箔の直線部だけを接続板部２ｂと
共に挟み込むようにすることができる。これは、挟持板
４が金属箔の直線部の長さよりも長い場合には、この挟
持板４が円筒形に突出した金属箔の上下の湾曲部まで挟
み込むことになり、この金属箔を無理に挟持板４側に引
っ張り破損させるおそれがあるからである。The holding plate 4 is shorter than the length of the cylindrical linear portion of the metal foil of the positive electrode 1a or the negative electrode 1b protruding from the end face of the power generating element 1. By doing so, it is possible for the holding plate 4 to hold only the linear portion of the metal foil together with the connection plate portion 2b. This is because if the holding plate 4 is longer than the length of the straight portion of the metal foil, the holding plate 4 will sandwich the upper and lower curved portions of the metal foil protruding into a cylindrical shape, and this metal foil will be forcibly forced. This is because the holding plate 4 may be pulled and damaged.
【００２７】本実施形態の非水電解質二次電池の正負極
の端子３，３は、それぞれリベット端子３ａと端子接続
杆３ｂと端子ボルト３ｃとで構成されている。リベット
端子３ａは、四隅が面取りされた正方形状のフランジ部
の上下の面から円筒状のカシメ部を突出させたものであ
り、正極端子として用いられる端子３の場合にはアルミ
ニウムやアルミニウム合金で作製され、負極端子として
用いられる端子３の場合には銅や銅合金で作製される。
このリベット端子３ａは、下方のカシメ部が電解液に接
触するので、非水電解質二次電池の場合、正極端子側で
は、正極電位で非水電解液に溶解しないアルミニウムや
アルミニウム合金等を用いる必要があり、負極端子側で
は、負極活物質と合金化しない銅や銅合金等を用いる必
要がある。端子接続杆３ｂは、銅合金製の矩形の金属板
であり、両端部に貫通孔が形成されている。また、端子
ボルト３ｃは、六角形状の頭部の上面から上方に向けて
ボルト部を突設したステンレス鋼製の六角ボルトであ
る。これらの端子接続杆３ｂと端子ボルト３ｃは、電解
液と接触することがないので、端子接続杆３ｂの場合
は、特に導電性が高く十分な機械強度を有する銅合金を
用い、外部回路との接続を行う端子ボルト３ｃの場合に
は、特に機械強度が強く十分な導電性を有するステンレ
ス鋼が用いられる。The positive and negative terminals 3 and 3 of the non-aqueous electrolyte secondary battery of this embodiment are composed of rivet terminals 3a, terminal connecting rods 3b and terminal bolts 3c, respectively. The rivet terminal 3a is formed by protruding a cylindrical caulking portion from the upper and lower surfaces of a square flange portion having four chamfered corners. In the case of the terminal 3 used as a positive electrode terminal, the rivet terminal 3a is made of aluminum or an aluminum alloy. The terminal 3 used as a negative electrode terminal is made of copper or a copper alloy.
In the case of a non-aqueous electrolyte secondary battery, for the non-aqueous electrolyte secondary battery, aluminum or aluminum alloy which does not dissolve in the non-aqueous electrolyte at the positive electrode potential must be used because the lower caulking portion of the rivet terminal 3a comes into contact with the electrolytic solution. Therefore, on the negative electrode terminal side, it is necessary to use copper, copper alloy, or the like that is not alloyed with the negative electrode active material. The terminal connecting rod 3b is a rectangular metal plate made of a copper alloy, and has through holes at both ends. The terminal bolt 3c is a stainless steel hexagonal bolt having a bolt protruding upward from the upper surface of the hexagonal head. Since the terminal connecting rod 3b and the terminal bolt 3c do not come into contact with the electrolytic solution, in the case of the terminal connecting rod 3b, a copper alloy having particularly high conductivity and sufficient mechanical strength is used, and the terminal connecting rod 3b and the terminal bolt 3c are connected to an external circuit. In the case of the terminal bolt 3c for connection, stainless steel having particularly high mechanical strength and sufficient conductivity is used.
【００２８】上記集電接続板２，２の本体２ａ，２ａ
は、実際には発電要素１，１への取り付けよりも先に、
それぞれ図２に示す下部絶縁封止材５，５を介して蓋板
６の下面の両端部に配置される。また、この蓋板６の上
面の両端部には、それぞれ上部絶縁封止材７，７を介し
て端子３，３のリベット端子３ａ，３ａと端子接続杆３
ｂ，３ｂと端子ボルト３ｃ，３ｃとが配置される。ただ
し、各リベット端子３ａは、下部絶縁封止材５と蓋板６
と上部絶縁封止材７に形成された貫通孔を通して下方の
カシメ部の先端部を集電接続板２の本体２ａに形成され
た貫通孔に嵌入させてカシメにより接続固定される。こ
の際、リベット端子３ａは、絶縁封止材５，７によって
蓋板６とは絶縁される。また、リベット端子３ａの下方
のカシメ部と集電接続板２の本体２ａとがカシメられる
ことにより、絶縁封止材５，７が蓋板６を挟持圧迫する
ことになるので、この蓋板６の貫通孔が封口される。こ
の蓋板６の上面の両端部にそれぞれ上部絶縁封止材７，
７を介して配置された各端子接続杆３ｂは、一方の貫通
孔にリベット端子３ａの上方のカシメ部を下方から嵌入
させてカシメにより接続固定すると共に、他方の貫通孔
に端子ボルト３ｃのボルト部を下方から嵌入させる。こ
の際、端子ボルト３ｃは、六角形状の頭部を上部絶縁封
止材７の六角形状の凹部に嵌め込むことにより回り止め
される。この端子ボルト３ｃは、ボルト部が端子接続杆
３ｂの貫通孔に隙間嵌めされ係止されたままにすること
により、このボルト部に外部回路の接続部材を通してナ
ットで締め付けた場合にのみ端子接続杆３ｂに接続固定
されるようにしてもよいし、予め溶接等によって頭部等
を端子接続杆３ｂに接続固定しておくようにしてもよ
い。このように予め端子ボルト３ｃを端子接続杆３ｂに
接続固定しておいた場合には、外部回路の接続部材のナ
ットによる締め付けが十分でない場合にも、端子接続杆
３ｂがこの接続部材と直接接触する部分に電流が流れる
他に、この端子接続杆３ｂから端子ボルト３ｃを介しナ
ットが接続部材に接触する部分にも確実に電流が流れる
ようになり、端子３と接続部材との接触抵抗を低減させ
ることができるようになる。The main bodies 2a, 2a of the current collecting connection plates 2, 2
Is actually prior to attachment to the power generating elements 1, 1
Each is disposed at both ends of the lower surface of the lid plate 6 via the lower insulating sealing materials 5 and 5 shown in FIG. Also, the rivet terminals 3a, 3a of the terminals 3, 3 and the terminal connecting rod 3 are provided at both ends of the upper surface of the lid plate 6 via upper insulating sealing materials 7, 7, respectively.
b, 3b and terminal bolts 3c, 3c. However, each rivet terminal 3a is provided with a lower insulating sealing material 5 and a cover plate 6
Through the through-hole formed in the upper insulating sealing material 7, the tip of the lower caulking portion is fitted into the through-hole formed in the main body 2 a of the current collecting connection plate 2, and connected and fixed by caulking. At this time, the rivet terminal 3a is insulated from the cover plate 6 by the insulating sealing materials 5 and 7. In addition, since the caulking portion below the rivet terminal 3a and the main body 2a of the current collecting connection plate 2 are caulked, the insulating sealing materials 5 and 7 sandwich and press the cover plate 6, so that the cover plate 6 is pressed. Is closed. An upper insulating sealing material 7 is provided on each end of the upper surface of the lid plate 6.
Each of the terminal connecting rods 3b disposed via the corresponding one of the rivet terminals 3a is fitted into one of the through holes from below and fixedly connected by caulking, and the bolt of the terminal bolt 3c is inserted into the other through hole. The part is fitted from below. At this time, the terminal bolt 3c is prevented from rotating by fitting the hexagonal head into the hexagonal recess of the upper insulating sealing material 7. The terminal bolt 3c is held in the through-hole of the terminal connection rod 3b by being gap-fitted into the through-hole of the terminal connection rod 3b, so that the terminal connection rod is only tightened with a nut through a connection member of an external circuit. The head may be connected and fixed to the terminal connecting rod 3b by welding or the like in advance. When the terminal bolt 3c is connected and fixed to the terminal connecting rod 3b in advance, the terminal connecting rod 3b is in direct contact with the connecting member even when the connection member of the external circuit is not sufficiently tightened by the nut. In addition to the current flowing through the connecting portion, the current reliably flows from the terminal connecting rod 3b to the portion where the nut contacts the connecting member via the terminal bolt 3c, and the contact resistance between the terminal 3 and the connecting member is reduced. Will be able to do that.
【００２９】上記のようにして蓋板６の上面の両端部に
端子３，３が配置されると共に、この蓋板６の下面の両
端部に集電接続板２，２が取り付けられると、これらの
集電接続板２，２に上記のようにして発電要素１，１が
接続される。そして、これら２個の発電要素１は、ステ
ンレス鋼板製の筐体状の電池容器８の内部に収納され、
この電池容器８の上端開口部が蓋板６によって塞がれ
る。そして、この蓋板６の周囲を溶接によって封止し、
電池容器８の内部に電解液を充填して、この内部を密閉
することにより非水電解質二次電池となる。この非水電
解質二次電池は、２個の発電要素１を長円筒形の平坦な
側面が直立するように横置きに並べて収納すると共に、
端子３の端子ボルト３ｃが蓋板６の上面の両端部から上
方に突出するので、設置のスペース効率が良いものとな
る。As described above, when the terminals 3 and 3 are arranged at both ends of the upper surface of the cover plate 6 and the current collecting connection plates 2 and 2 are attached to both ends of the lower surface of the cover plate 6, The power generation elements 1 and 1 are connected to the current collection connection plates 2 and 2 as described above. These two power generating elements 1 are housed inside a housing-shaped battery case 8 made of stainless steel plate,
The upper end opening of the battery container 8 is closed by the cover plate 6. Then, the periphery of the lid plate 6 is sealed by welding,
A nonaqueous electrolyte secondary battery is obtained by filling the inside of the battery container 8 with an electrolytic solution and sealing the inside. In this nonaqueous electrolyte secondary battery, the two power generating elements 1 are housed side by side so that the long side surfaces of the long cylindrical shape stand upright,
Since the terminal bolts 3c of the terminals 3 protrude upward from both ends of the upper surface of the cover plate 6, the space efficiency of installation is good.
【００３０】上記構成の非水電解質二次電池によれば、
各発電要素１の正極１ａや負極１ｂと端子３との間が、
大きな電流容量を有する集電接続板２の本体２ａと接続
板部２ｂを介して接続されるので、十分に大きな充放電
電流を流すことができるようになる。しかも、各発電要
素１の正極１ａや負極１ｂの金属箔は、ある程度薄い金
属板からなる挟持板４を介して接続板部２ｂに超音波溶
接されるので、溶着が確実に行なわれ金属箔が剥がれ易
くなるようなこともなくなる。According to the non-aqueous electrolyte secondary battery having the above structure,
Between the terminal 3 and the positive electrode 1a or the negative electrode 1b of each power generation element 1,
Since it is connected to the main body 2a of the current collection connection plate 2 having a large current capacity via the connection plate portion 2b, a sufficiently large charge / discharge current can flow. In addition, since the metal foil of the positive electrode 1a and the negative electrode 1b of each power generating element 1 is ultrasonically welded to the connection plate 2b via the sandwiching plate 4 made of a somewhat thin metal plate, welding is performed reliably and the metal foil is formed. There is no possibility of peeling.
【００３１】また、２個の発電要素１，１の上方に集電
接続板２の本体２ａを水平に配置して、蓋板を貫通する
端子３との接続を容易にすると共に、この本体２ａから
接続板部２ｂを下方に向けて折り曲げねじって突出させ
ることにより、各発電要素１の端面から突出する正極１
ａや負極１ｂの垂直な金属箔にこの接続板部２ｂの板面
を沿わせることができるので、これら金属箔との接続が
容易になる。即ち、各接続板部２ｂがねじれてなけれ
ば、金属箔とが直交することになり、接続が容易ではな
くなる。また、集電接続板２の接続板部２ｂが本体２ａ
における発電要素１，１の並び方向に沿って両側に突出
した板片を下方に折り曲げて形成されたものである場合
には、発電要素１の端面から突出する金属箔をこの接続
板部２ｂの板面を沿わせることができるが、各発電要素
１に１本ずつの接続板部２ｂしか割り当てることができ
ず、３個以上の発電要素１が並べて配置された電池の場
合には、真ん中の１個以上の発電要素１の集電を行うこ
とができないようになる。しかも、本実施形態の集電接
続板２は、１枚の金属板に打ち抜き・曲げ・ねじり加工
による簡単な加工を施すだけで作製することができる。Further, the main body 2a of the current collecting and connecting plate 2 is horizontally disposed above the two power generating elements 1, 1 to facilitate connection with the terminal 3 penetrating the cover plate, and the main body 2a The connecting plate 2b is bent downward and twisted to project from the positive electrode 1 so as to project from the end face of each power generating element 1.
Since the plate surface of the connection plate portion 2b can be made to follow the vertical metal foil of the negative electrode 1a and the negative electrode 1b, connection with these metal foils becomes easy. That is, if each connection plate portion 2b is not twisted, the metal foil is perpendicular to the metal foil, and connection is not easy. Also, the connecting plate portion 2b of the current collecting connecting plate 2 is
Is formed by bending downwardly a plate piece protruding on both sides along the direction in which the power generating elements 1 and 1 are arranged, the metal foil protruding from the end face of the power generating element 1 Although the plate surfaces can be arranged, only one connecting plate portion 2b can be allocated to each power generating element 1, and in the case of a battery in which three or more power generating elements 1 are arranged side by side, the middle At least one power generating element 1 cannot be collected. In addition, the current collecting and connecting plate 2 of the present embodiment can be manufactured by simply performing simple processing such as punching, bending, and twisting on a single metal plate.
【００３２】また、各発電要素１の各端面ごとに対とな
る２本の接続板部２ｂが配置されるので、この接続板部
２ｂの幅を狭くしても十分な電流容量を得ることがで
き、この端面からの金属箔の突出量を少なくて済むよう
にすることができる。しかも、各発電要素１の各端面か
ら突出する金属箔は、これら対となる２本の接続板部２
ｂのねじり方向に従って間に挿入されるので、組み立て
作業も容易となる。Further, since two connecting plate portions 2b are arranged at each end face of each power generating element 1, a sufficient current capacity can be obtained even if the width of the connecting plate portion 2b is reduced. Thus, the amount of protrusion of the metal foil from the end surface can be reduced. In addition, the metal foil protruding from each end face of each power generating element 1 is connected to the two connecting plate portions 2 forming a pair.
Since it is inserted between them according to the twisting direction of b, the assembling work is also facilitated.
【００３３】なお、上記実施形態では、超音波溶接によ
って挟持板４の間に接続板部２ｂと正極１ａや負極１ｂ
の金属箔の接続を行う場合について示したが、スポット
溶接等の他の溶接により溶着を行なうこともできる。ま
た、このような溶接に代えて、挟持板４の外側から強い
力で圧迫することにより、接続板部２ｂと金属箔とを圧
着することもできる。さらに、接続板部２ｂには、凸部
が形成されていなくても、金属箔を確実に溶着又は圧着
することは可能である。また、上記実施形態では、接続
板部２ｂと正極１ａや負極１ｂの金属箔との接続に挟持
板４を用いる場合を示したが、挟持板４以外の接続部品
を用いたり、いずれの接続部品を用いることなく接続を
行うことも可能である。In the above embodiment, the connecting plate 2b and the positive electrode 1a or the negative electrode 1b are sandwiched between the holding plates 4 by ultrasonic welding.
Although the case where the connection of the metal foil is performed has been described, the welding can be performed by other welding such as spot welding. Further, instead of such welding, the connection plate portion 2b and the metal foil can be crimped by pressing with a strong force from the outside of the holding plate 4. Furthermore, even if no convex portion is formed on the connection plate portion 2b, the metal foil can be reliably welded or pressure-bonded. Further, in the above-described embodiment, the case where the holding plate 4 is used to connect the connection plate portion 2b to the metal foil of the positive electrode 1a or the negative electrode 1b has been described, but a connection component other than the holding plate 4 is used, or any connection component is used. It is also possible to make connection without using.
【００３４】また、上記実施形態では、２個の発電要素
１，１を並べて配置した非水電解質二次電池について示
したが、この発電要素１の個数は限定されず、１個以上
であれば何個の発電要素１を用いる非水電解質二次電池
であってもよい。さらに、上記実施形態では、集電接続
板２が各発電要素１の正負極ごとにそれぞれ対となる２
本の接続板部２ｂを配置する場合を示したが、各発電要
素１の正負極にそれぞれ少なくとも１本以上の接続板部
２ｂが配置されていればよい。In the above embodiment, the non-aqueous electrolyte secondary battery in which the two power generating elements 1 and 1 are arranged side by side is shown. However, the number of the power generating elements 1 is not limited, and the number of the power generating elements 1 is one or more. A non-aqueous electrolyte secondary battery using any number of power generation elements 1 may be used. Further, in the above embodiment, the current collecting connecting plate 2 is paired with each of the positive and negative electrodes of each power generating element 1.
Although the case where the two connection plate portions 2b are arranged has been shown, at least one or more connection plate portions 2b may be arranged on each of the positive and negative electrodes of each power generating element 1.
【００３５】また、上記実施形態では、端子３がリベッ
ト端子３ａと端子接続杆３ｂと端子ボルト３ｃによって
構成される場合を示したが、この端子３の構成は特に限
定されず、図３に示したような単一部品からなるような
ものであってもよい。ただし、請求項５の発明について
は、電池引出端子と端子接続部材と外部接続端子からな
る端子に限られる。電池引出端子は、リベット端子３ａ
のように電池外装体の内部で発電要素の電極に接続され
ると共に、絶縁封止されて外部に突出する導電部品であ
るが、このリベット端子３ａのような形状には限定され
ず、絶縁封止手段も絶縁封止材５，７をカシメによって
圧迫する方法には限定されない。端子接続部材は、端子
接続杆３ｂのように、電池外装体の外部に配置されると
共に、電池引出端子の外部突出部に接続固定された導電
部品であるが、この端子接続杆３ｂのような形状には限
定されず、電池引出端子との接続固定手段もカシメには
限定されない。外部接続端子は、端子ボルト３ｃのよう
に、電池外装体の外部に配置され外部回路との接続を行
うための導電部品であるが、この端子ボルト３ｃのよう
な六角ボルト状の形状には限定されず、ボルト部以外
の、ナット状やテーパ軸状等の構造により外部回路との
接続を行うようになっていてもよい。Further, in the above embodiment, the case where the terminal 3 is constituted by the rivet terminal 3a, the terminal connecting rod 3b and the terminal bolt 3c is shown, but the structure of the terminal 3 is not particularly limited, and is shown in FIG. Such a single component may be used. However, the invention according to claim 5 is limited to a terminal including a battery extraction terminal, a terminal connection member, and an external connection terminal. The battery extraction terminal is a rivet terminal 3a
Is a conductive component that is connected to the electrode of the power generation element inside the battery exterior body and is insulated and sealed and protrudes to the outside, but the shape is not limited to the shape of the rivet terminal 3a. The stopping means is not limited to the method of pressing the insulating sealing materials 5 and 7 by caulking. The terminal connection member is a conductive component that is arranged outside the battery outer casing like the terminal connection rod 3b and is connected and fixed to the external protrusion of the battery lead-out terminal, as in the terminal connection rod 3b. The shape is not limited, and the means for connecting and fixing to the battery lead-out terminal is not limited to caulking. The external connection terminal is a conductive component, such as a terminal bolt 3c, which is disposed outside the battery exterior body and is connected to an external circuit, but is limited to a hexagonal bolt-like shape such as the terminal bolt 3c. Instead, the connection with the external circuit may be made by a structure other than the bolt portion, such as a nut shape or a tapered shaft shape.
【００３６】また、上記実施形態では、長円筒形の巻回
型の発電要素１について説明したが、積層型の発電要素
１の場合にも、積層の端面からはみ出した正極１ａや負
極１ｂの金属箔を同様に接続固定することができる。さ
らに、上記実施形態では、電池容器８と蓋板６で構成さ
れる電池外装体を例示したが、この電池外装体の構成は
特に限定されない。また、上記実施形態では、非水電解
質二次電池について説明したが、この電池の種類も特に
限定されない。ただし、請求項４の発明では、発電要素
１は長円筒形の巻回型のものに限られる。また、請求項
５の発明については、発電要素１の形状や種類は一切限
定されず、集電接続板２とこの発電要素１との接続構造
も特に限定されない。In the above-described embodiment, the winding type power generating element 1 having a long cylindrical shape has been described. However, in the case of the stacked type power generating element 1, the metal of the positive electrode 1 a and the negative electrode 1 b protruding from the end face of the lamination is also used. The foil can likewise be connected and fixed. Further, in the above-described embodiment, the battery outer case composed of the battery container 8 and the cover plate 6 has been illustrated, but the configuration of the battery outer case is not particularly limited. In the above embodiment, the non-aqueous electrolyte secondary battery has been described, but the type of this battery is not particularly limited. However, in the invention of claim 4, the power generating element 1 is limited to a long cylindrical wound type. In the invention of claim 5, the shape and type of the power generating element 1 are not limited at all, and the connection structure between the current collecting connection plate 2 and the power generating element 1 is not particularly limited.
【００３７】[0037]
【発明の効果】以上の説明から明らかなように、本発明
の電池によれば、発電要素と端子をスペース効率良く配
置した場合にも、金属板に簡単な加工を施した集電接続
板を用いて、効率のよい集電を行うことができるように
なる。しかも、発電要素の電極と集電接続板の接続板部
との接続を確実にすることができ、これらの組み立て作
業も容易に行うことができるようになる。As is apparent from the above description, according to the battery of the present invention, even when the power generating elements and the terminals are arranged in a space-efficient manner, the current collector connecting plate obtained by simply processing the metal plate can be used. When used, efficient current collection can be performed. In addition, the connection between the electrode of the power generation element and the connection plate portion of the current collection connection plate can be ensured, and the assembling work can be easily performed.
【図１】本発明の一実施形態を示すものであって、非水
電解質二次電池の発電要素と端子との接続構造を示す組
み立て斜視図である。FIG. 1, showing an embodiment of the present invention, is an assembled perspective view showing a connection structure between a power generation element and a terminal of a nonaqueous electrolyte secondary battery.
【図２】本発明の一実施形態を示すものであって、非水
電解質二次電池の構造を示す組み立て斜視図である。FIG. 2, showing one embodiment of the present invention, is an assembled perspective view illustrating a structure of a nonaqueous electrolyte secondary battery.
【図３】従来例を示すものであって、非水電解質二次電
池の発電要素と端子との接続構造を示す組み立て斜視図
である。FIG. 3 is a perspective view showing a conventional example, and is an assembled perspective view showing a connection structure between a power generation element and a terminal of a nonaqueous electrolyte secondary battery.
１ 発電要素 １ａ 正極 １ｂ 負極 ２ 集電接続板 ２ａ 本体 ２ｂ 接続板部 ３ 端子 ３ａ リベット端子 ３ｂ 端子接続杆 ３ｃ 端子ボルト ４ 挟持板 1 Power generation element 1a Positive electrode 1b Negative electrode 2 Current collector connection plate 2a body 2b Connection plate 3 terminals 3a Rivet terminal 3b Terminal connection rod 3c terminal bolt 4 Holding plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 胸永 訓良 京都府京都市南区吉祥院西ノ庄猪之馬場町 １番地日本電池株式会社内 (72)発明者 松原 岳人 京都府京都市南区吉祥院西ノ庄猪之馬場町 １番地日本電池株式会社内 (72)発明者 田才 博志 京都府京都市南区吉祥院西ノ庄猪之馬場町 １番地日本電池株式会社内 (72)発明者 鈴木 勲 京都府京都市南区吉祥院西ノ庄猪之馬場町 １番地日本電池株式会社内 Ｆターム(参考） 5H022 AA09 BB01 CC02 CC12 CC16 5H029 AJ01 AJ14 BJ02 BJ04 BJ16 CJ01 CJ05 DJ05 HJ04 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kunyo Munaga Kyoto, Minami-ku, Kyoto No. 1 Inside Japan Battery Co., Ltd. (72) Inventor Taketo Matsubara Kyoto, Minami-ku, Kyoto No. 1 Inside Japan Battery Co., Ltd. (72) Inventor Hiroshi Tasai Kyoto, Minami-ku, Kyoto No. 1 Inside Japan Battery Co., Ltd. (72) Inventor Isao Suzuki Kyoto, Minami-ku, Kyoto No. 1 Inside Japan Battery Co., Ltd. F term (reference) 5H022 AA09 BB01 CC02 CC12 CC16 5H029 AJ01 AJ14 BJ02 BJ04 BJ16 CJ01 CJ05 DJ05 HJ04
Claims (5)
に接続すると共に発電要素の端部に沿わせて配置し、こ
の本体の端縁部から発電要素の端面側に向けて折れ曲が
ると共にほぼ９０度ねじれて突設された１本以上の細長
い板状の接続板部を発電要素の端面から突出する電極に
沿わせて接続したことを特徴とする電池。1. A main body of a current collecting and connecting plate made of a metal plate is connected to a terminal and arranged along an end of a power generating element, and is bent from an edge of the main body toward an end face of the power generating element. A battery characterized in that one or more elongated plate-shaped connecting plate portions projected and twisted by approximately 90 degrees are connected along electrodes protruding from an end face of the power generating element.
続板部が突設されると共に、各対の２本の接続板部が互
いに向かい合う側辺を発電要素の端面とは反対側に回転
させることにより逆向きにねじったものであることを特
徴とする請求項１に記載の電池。2. One or more pairs of connecting plates protruding from the main body of the current collecting connecting plate, and a side of each pair of two connecting plates facing each other is opposite to an end surface of the power generating element. The battery according to claim 1, wherein the battery is twisted in the opposite direction by being rotated.
出方向における長さがこの接続板部の板厚よりも長いこ
とを特徴とする請求項１又は２に記載の電池。3. The battery according to claim 1, wherein a length of each of the connection plate portions in the projecting direction of the 90-degree twisted portion is longer than a thickness of the connection plate portion.
に、長円筒形の発電要素の端面から突出した電極の直線
部を沿わせ、これら接続板部と電極の直線部とを挟持板
の間に挟み込んで溶着又は圧着により接続した電池にお
いて、 挟持板の長さが電極の直線部の長さよりも短いことを特
徴とする電池。4. A straight line portion of an electrode protruding from an end surface of a long cylindrical power generating element is arranged along a connecting plate portion of a current collecting connector connected to a terminal, and the connecting plate portion and the straight line portion of the electrode are connected. A battery, wherein the length of the holding plate is shorter than the length of the linear portion of the electrode, wherein the battery is sandwiched between the holding plates and connected by welding or pressure bonding.
する電池引出端子と、この電池外装体の外部に配置さ
れ、この電池引出端子の外部突出部に接続固定された端
子接続部材を介して接続された外部接続端子を備えた電
池において、 外部接続端子が端子接続部材に接続固定されたことを特
徴とする電池。5. A battery lead-out terminal which is insulated and sealed and protrudes to the outside of the battery outer casing, and a terminal connecting member which is arranged outside the battery outer casing and is connected and fixed to the external projecting portion of the battery lead-out terminal. A battery provided with an external connection terminal connected via a battery, wherein the external connection terminal is connected and fixed to a terminal connection member.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002151808A JP4292365B2 (en) | 2002-05-27 | 2002-05-27 | battery |
| CNB038124327A CN100508248C (en) | 2002-05-27 | 2003-05-27 | Battery |
| CN2009101393736A CN101562260B (en) | 2002-05-27 | 2003-05-27 | Battery |
| US10/515,650 US7718312B2 (en) | 2002-05-27 | 2003-05-27 | Battery |
| PCT/JP2003/006589 WO2003100886A1 (en) | 2002-05-27 | 2003-05-27 | Battery |
| CN2008100903949A CN101308920B (en) | 2002-05-27 | 2003-05-27 | Battery |
| US12/749,363 US8034482B2 (en) | 2002-05-27 | 2010-03-29 | Battery having current-collection structure |
| US13/212,786 US8329338B2 (en) | 2002-05-27 | 2011-08-18 | Battery with current-collector connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002151808A JP4292365B2 (en) | 2002-05-27 | 2002-05-27 | battery |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009032907A Division JP2009105075A (en) | 2009-02-16 | 2009-02-16 | Battery |
| JP2009032901A Division JP5083244B2 (en) | 2009-02-16 | 2009-02-16 | battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003346770A true JP2003346770A (en) | 2003-12-05 |
| JP4292365B2 JP4292365B2 (en) | 2009-07-08 |
Family
ID=29769285
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002151808A Expired - Lifetime JP4292365B2 (en) | 2002-05-27 | 2002-05-27 | battery |
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| Country | Link |
|---|---|
| JP (1) | JP4292365B2 (en) |
| CN (2) | CN101562260B (en) |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5158842A (en) * | 1992-03-27 | 1992-10-27 | Acme Electric Corporation | Battery terminal connector |
-
2002
- 2002-05-27 JP JP2002151808A patent/JP4292365B2/en not_active Expired - Lifetime
-
2003
- 2003-05-27 CN CN2009101393736A patent/CN101562260B/en not_active Expired - Lifetime
- 2003-05-27 CN CN2008100903949A patent/CN101308920B/en not_active Expired - Lifetime
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4292365B2 (en) | 2009-07-08 |
| CN101562260A (en) | 2009-10-21 |
| CN101308920B (en) | 2011-10-05 |
| CN101562260B (en) | 2012-02-01 |
| CN101308920A (en) | 2008-11-19 |
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