JP2002246005A - Battery connection structure - Google Patents
Battery connection structureInfo
- Publication number
- JP2002246005A JP2002246005A JP2001045181A JP2001045181A JP2002246005A JP 2002246005 A JP2002246005 A JP 2002246005A JP 2001045181 A JP2001045181 A JP 2001045181A JP 2001045181 A JP2001045181 A JP 2001045181A JP 2002246005 A JP2002246005 A JP 2002246005A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- connection
- inter
- connection structure
- cells
- 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.)
- Pending
Links
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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電池接続構造体に関
し、さらに詳しくは、複数個の円筒型単電池をその軸方
向および半径方向に直列に接続することにより所用の出
力電圧を得るための電池接続構造体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery connection structure, and more particularly to a battery for obtaining a required output voltage by connecting a plurality of cylindrical cells in series in their axial and radial directions. Regarding the connection structure.
【０００２】[0002]
【従来の技術】近年、各種の電動工具や電動アシスト自
転車、さらには、電気自動車などの駆動源として、複数
個の単電池を直列に接続してなる電池接続構造体が利用
されている。単電池の接続構造体には様々なものがあ
り、例えば、円筒型の単電池の２個以上を軸方向に直線
状に配置し、これらの間を直列に接続する、あるいは、
単電池を半径方向に並置してこれらの間を直列に接続す
るなどの構造体が考えられる。2. Description of the Related Art In recent years, a battery connection structure formed by connecting a plurality of cells in series has been used as a driving source for various electric tools, electric assist bicycles, and electric vehicles. There are various types of connection structures for unit cells, for example, two or more cylindrical unit cells are linearly arranged in the axial direction, and these are connected in series, or
A structure in which the cells are juxtaposed in the radial direction and these are connected in series can be considered.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記の電動
工具や電動アシスト自転車、電気自動車などの駆動電源
としては最近ますますコンパクト化が要求されており、
その要求に応えるため、円筒型の単電池を軸方向のみ、
あるいは、半径方向のみに接続するのではなく、軸方向
の接続と、半径方向の接続とを適宜組み合わせることに
よって、同じ出力電圧に対してできるだけ小型化をはか
ることが試みられている。[Problems to be Solved by the Invention] By the way, the drive power of the above-mentioned electric tools, electric assist bicycles, electric vehicles and the like has recently been required to be more and more compact.
In order to respond to that demand, cylindrical cells have been
Alternatively, attempts have been made to reduce the size as much as possible for the same output voltage by appropriately combining axial connection and radial connection, instead of connecting only in the radial direction.
【０００４】さらに、このような電池接続構造体を製造
する際は、各単電池間の連結部に接続部材を使用するこ
とが一般的であり、その接続部材としては簡単な構造
で、電池間を確実に接続することが可能であることが要
求されている。本発明は、そのような接続部材を使用
し、円筒型単電池を軸方向および半径方向に複数個直列
に接続することにより、できるだけコンパクトな電池接
続構造体を提供することを目的とする。Further, when manufacturing such a battery connecting structure, it is common to use a connecting member for a connecting portion between each unit cell, and the connecting member has a simple structure and has a simple structure. Is required to be able to be reliably connected. An object of the present invention is to provide a battery connection structure as compact as possible by using such a connection member and connecting a plurality of cylindrical unit cells in series in the axial direction and the radial direction.
【０００５】[0005]
【課題を解決するための手段】本発明者らは上記目的を
達成するために、種々検討を重ねた結果、各単電池を軸
方向に接続するための、簡単な構造で、しかも、接続信
頼性の高い接続部材ならびに各単電池を半径方向に並置
して接続するための接続部材を提案し、電池接続構造体
の軸方向と半径方向の少なくともいずれか一方の接続箇
所にこの接続部材を使用することにより、所望の効果が
得られることを確認して、本発明を完成するに至った。Means for Solving the Problems The present inventors have conducted various studies to achieve the above object, and as a result, have a simple structure for connecting the cells in the axial direction, and have a reliable connection. And a connecting member for connecting the unit cells in a radial direction in parallel with each other and using the connecting member in at least one of an axial direction and a radial direction of a battery connecting structure. As a result, it has been confirmed that desired effects can be obtained, and the present invention has been completed.
【０００６】すなわち、本発明の電池用接続部材は、２
個の円筒型単電池を軸方向に配置して両者を直列に接続
する第１の電池間連結部と、前記２個の単電池を半径方
向に並置して両者を直列に接続する第２の電池間連結部
とを有する電池接続構造体において、前記第１の電池間
連結部において使用される接続部材が、一方の単電池の
底部に当接する環状平面部と、この環状平面部の内周縁
から連続して一側に突出形成されて他方の単電池の電極
端子または金属製の封口板に当接する皿状部とからなる
接続部材であるか、または、前記第２の電池間連結部に
おいて使用される接続部材が、一方の電池の底部に当接
する平面状の第１の接続部と、この第１の接続部から延
出され、他方の電池の正極端子が突出可能な開口が形成
されるとともに、前記他方の単電池の封口板に当接する
環状の凹部もしくは前記第１の接続部と段差をもって形
成された平面部を有する第２の接続部とからなるもので
あり、さらに好ましくは、第１および第２の連結部にお
いて、それぞれ上記の接続部材を同時に使用したもので
ある。That is, the battery connecting member of the present invention comprises
A first inter-battery connecting portion for arranging two cylindrical cells in the axial direction and connecting them in series, and a second inter-cell connecting portion for connecting the two cells in series in the radial direction and connecting them in series In the battery connection structure having the inter-battery connection portion, the connection member used in the first inter-battery connection portion includes an annular flat portion that contacts the bottom of one of the cells, and an inner peripheral edge of the annular flat portion. Or a plate-shaped portion that is formed so as to continuously protrude from one side to an electrode terminal of the other cell or a metal sealing plate, or in the second inter-battery connection portion. A connecting member to be used has a planar first connecting portion abutting against a bottom portion of one battery, and an opening extending from the first connecting portion to allow a positive terminal of the other battery to protrude. And an annular concave portion that contacts the sealing plate of the other cell. The first connecting portion and the second connecting portion having a flat portion formed with a step, and more preferably, the first and second connecting portions simultaneously use the above connecting members, respectively. It was done.
【０００７】[0007]
【発明の実施の形態】以下、図面を参照しながら本発明
の電池用接続部材の構成について説明する。本発明は、
単電池を軸方向に直列に接続する第１の電池連結部に使
用する接続部材（以下、第１の接続部材という）と、半
径方向に並置して直列に接続する第２の電池連結部に使
用する接続部材（以下、第２の接続部材という）のいず
れか一方、好ましくは両方を使用することを特徴とする
電池接続構造体である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a battery connecting member of the present invention will be described below with reference to the drawings. The present invention
A connecting member (hereinafter, referred to as a first connecting member) used for a first battery connecting portion that connects cells in series in the axial direction, and a second battery connecting portion that connects in series in the radial direction and connected in series. A battery connection structure characterized in that either one of the connection members to be used (hereinafter, referred to as a second connection member), preferably both, are used.
【０００８】以下に、各接続部材の構造について詳細に
述べる。まず、図１〜３は第１の接続部材の構成の一例
を示し、比較的大型の２個の単電池１１，１１を軸方向
に直列に接続する場合を示している。単電池１１は例え
ば円筒形ニッケル・水素二次電池であり、図１に示すよ
うに、有底円筒状の金属ケース１２内に、正極とセパレ
ータと負極とを積層して渦巻状に巻回することにより作
製された電極群（図示せず）が収容されている。負極は
この電極群の最外周に配置されて金属ケース１２と電気
的に接触している。つまり、この場合金属ケース１２は
負極端子を兼ねている。なお、アルカリ電解液は金属ケ
ース１２内に注入されている。Hereinafter, the structure of each connecting member will be described in detail. First, FIGS. 1 to 3 show an example of the configuration of a first connection member, and show a case where two relatively large single cells 11 are connected in series in the axial direction. The unit cell 11 is, for example, a cylindrical nickel-hydrogen secondary battery, and as shown in FIG. 1, a positive electrode, a separator, and a negative electrode are stacked and spirally wound in a bottomed cylindrical metal case 12. The electrode group (not shown) produced by the above-described method is accommodated. The negative electrode is arranged at the outermost periphery of the electrode group and is in electrical contact with the metal case 12. That is, in this case, the metal case 12 also serves as the negative electrode terminal. Note that the alkaline electrolyte is injected into the metal case 12.
【０００９】そして、金属ケース１２の上部開口には中
央に穴１３ａを有する円形の封口板１３が配置されてい
る。封口板１３の周縁とケース１２の上部開口部内面と
の間には、リング状の絶縁性ガスケット１４が配置さ
れ、この上部開口部を内側に縮径するカシメ加工により
金属ケース１２に封口板１３をガスケット１４を介して
気密に固定している。At the upper opening of the metal case 12, a circular sealing plate 13 having a hole 13a in the center is arranged. A ring-shaped insulating gasket 14 is disposed between the peripheral edge of the sealing plate 13 and the inner surface of the upper opening of the case 12, and the sealing plate 13 is attached to the metal case 12 by caulking to reduce the diameter of the upper opening inward. Are hermetically fixed via a gasket 14.
【００１０】正極リード１５は、その一端が前記正極
（図示せず）に、他端が封口板１３の下面に接続されて
いる。帽子形状の正極端子１６は、封口板１３上に穴１
３ａを覆うように取り付けられている。ゴム製の安全弁
１７は、封口板１３と正極端子１６で囲まれた空間内に
穴１３ａを閉塞するように配置されている。なお、金属
ケース１２の外周面は絶縁チューブ１８により被覆さ
れ、この絶縁チューブ１８は金属ケース１２の上部開口
の先端屈曲部１２ｂに密着してこれとともに内側に屈曲
されている。The positive electrode lead 15 has one end connected to the positive electrode (not shown) and the other end connected to the lower surface of the sealing plate 13. The hat-shaped positive electrode terminal 16 is provided with the hole 1 on the sealing plate 13.
It is attached so as to cover 3a. The rubber safety valve 17 is arranged so as to close the hole 13 a in a space surrounded by the sealing plate 13 and the positive electrode terminal 16. Note that the outer peripheral surface of the metal case 12 is covered with an insulating tube 18, and the insulating tube 18 is in close contact with the distal bent portion 12 b of the upper opening of the metal case 12 and is bent inward together therewith.
【００１１】このような単電池１１を例えば２個接続す
る場合は、図１に示すように電池１１，１１の一端面の
正極端子１６および封口板１３と、他端面の金属ケース
１２の露出した底部１２ａとを対向させて、両者の間に
接続部材１９を介在させ、両者を溶接して電気的に接続
した構成とする。接続部材１９は、図２のように電池１
１の外径とほぼ等しいか、わずかに小さい外径を有する
円板状に形成され、電池１１の負極すなわち金属ケース
１２の底部１２ａと電気的に接続される環状平面部１９
ａと、この環状平面部１９ａの中心から他方の電池の封
口板１３および正極端子１６の方へ突出し、電池１の正
極に電気的に接続される皿状部１９ｂとから構成されて
いる。When two such cells 11 are connected, for example, as shown in FIG. 1, the positive electrode terminal 16 and the sealing plate 13 on one end of the batteries 11 and the metal case 12 on the other end are exposed. The connecting portion 19 is interposed between the bottom portion 12a and the bottom portion 12a, and the two are welded and electrically connected. The connection member 19 is, as shown in FIG.
1 is formed in a disk shape having an outer diameter substantially equal to or slightly smaller than the outer diameter of the metal case 12, and is electrically connected to the negative electrode of the battery 11, that is, the bottom 12 a of the metal case 12.
a, and a dish-shaped portion 19b protruding from the center of the annular flat portion 19a toward the sealing plate 13 and the positive electrode terminal 16 of the other battery and electrically connected to the positive electrode of the battery 1.
【００１２】環状平面部１９ａには、周方向に沿って等
間隔に複数個例えば４個の切欠き穴２０とこの切欠き穴
２０を挟む両側に一対のプロジェクション溶接用の突起
２１，２１’が形成されている。切欠き穴２０はプロジ
ェクション溶接時に無効電流を低減するためのものであ
る。この環状平面部１９ａは図１に示すように一方の電
池１１の金属ケース１２の底部１２ａに密着し、溶接さ
れている。The annular flat portion 19a has a plurality of notches 20 at equal intervals along the circumferential direction, and a pair of projection welding projections 21 and 21 'on both sides of the notches 20. Is formed. The notch hole 20 is for reducing a reactive current at the time of projection welding. As shown in FIG. 1, the annular flat portion 19 a is in close contact with the bottom portion 12 a of the metal case 12 of one battery 11 and is welded.
【００１３】皿状部１９ｂの底部は他方の電池１１の封
口板１３に固定されている。図２に示すように、皿状部
１９ｂの底部中央には開口１９ｃが形成され、この開口
１９ｃから正極端子を突出させている。また、皿状部１
９ｂの底部にも同様にその周方向に無効電流を低減する
ための切欠き穴２２と、これらの切欠き穴２２を挟んで
一対のプロジェクション溶接用突起２３，２３’が形成
されている。The bottom of the dish 19b is fixed to the sealing plate 13 of the other battery 11. As shown in FIG. 2, an opening 19c is formed in the center of the bottom of the dish 19b, and the positive electrode terminal protrudes from the opening 19c. In addition, dish-shaped part 1
Similarly, a cutout hole 22 for reducing the reactive current and a pair of projection welding projections 23 and 23 ′ are formed on the bottom of 9 b in the circumferential direction with the cutout hole 22 interposed therebetween.
【００１４】このような接続部材１９を使用して単電池
１１，１１を接続した構造を図１に示す。すなわち、２
個の単電池１１，１１を接続する場合は、まず、接続部
材１９の皿状部１９ｂの底面を一方の電池１１の封口板
１３に当接させて加圧しながら接続部材１９と封口板１
３との間に溶接電流を流す。それによって突起が溶融
し、接続部材１９の皿状部１９ｂの底部と封口板１３と
が図１に示す溶接部２４で溶着される。FIG. 1 shows a structure in which the cells 11 are connected using such a connecting member 19. That is, 2
When connecting the unit cells 11, 11, first, the bottom surface of the dish-shaped portion 19 b of the connection member 19 is brought into contact with the sealing plate 13 of one of the batteries 11 while applying pressure to the connection member 19 and the sealing plate 1.
3 and a welding current is applied. As a result, the projection is melted, and the bottom of the dish-shaped portion 19b of the connecting member 19 and the sealing plate 13 are welded at the welded portion 24 shown in FIG.
【００１５】ついで、接続部材１９の環状平面部１９ａ
を他方の電池１１の金属ケース１２の底面１２ａに当接
させ、上記と同様に加圧しながら溶接を行う。このと
き、溶接電極（図示せず）は金属ケース１２の底面１２
ａと、他方の電池の絶縁チューブ１８の先端屈曲部１８
ａとの間の間隙２６に挿入される。したがって、皿状部
１９ｂの深さｄは溶接電極を挿入する空間を確保できる
ように決定することが好ましい。具体的には、例えば３
〜１０ｍｍ程度である。これによって、平面部１９ａの
突起２１、２１’が溶融し、接続部材１９の環状平面部
１９ａと金属ケース１２の底面１２ａとが溶接部２５に
おいて溶接される。Next, the annular flat portion 19a of the connecting member 19
Is brought into contact with the bottom surface 12a of the metal case 12 of the other battery 11, and welding is performed while applying pressure in the same manner as described above. At this time, the welding electrode (not shown) is connected to the bottom surface 12 of the metal case 12.
a and the bent end portion 18 of the insulating tube 18 of the other battery.
a is inserted into the gap 26 between them. Therefore, it is preferable that the depth d of the dish 19b be determined so that a space for inserting the welding electrode can be secured. Specifically, for example, 3
It is about 10 to 10 mm. Thereby, the projections 21 and 21 ′ of the flat portion 19 a are melted, and the annular flat portion 19 a of the connecting member 19 and the bottom surface 12 a of the metal case 12 are welded at the welding portion 25.
【００１６】さらに、図１に示した単電池１１の接続構
造において、一方の電池１１の金属ケース１２の先端屈
曲部１２ｂと他方の電池１１の金属ケース１２の底面１
２ａとが、非常に僅かな間隙で対向していることを勘案
すると、両者が接触してショートすることを防止するた
めに図２に示したような、例えばポリカーボネートなど
の合成樹脂よりなる絶縁リング２７を一方の電池１１の
絶縁チューブ１８の先端屈曲部１８ａと金属ケース１２
の底面１２ａとの間に介在させることが好ましい。Further, in the connection structure of the cells 11 shown in FIG. 1, the bent portion 12b of the metal case 12 of one battery 11 and the bottom surface 1 of the metal case 12 of the other battery 11
In consideration of the fact that the electrodes 2a face each other with a very small gap, an insulating ring made of a synthetic resin such as polycarbonate as shown in FIG. 27 is formed by bending the distal end bent portion 18a of the insulating tube 18 of the one battery 11 and the metal case 12
Is preferably interposed between the bottom surface 12a and the bottom surface 12a.
【００１７】図４〜６は本発明の第１の接続部材の他の
実施形態であり、比較的小型の電池３１の接続に好適な
接続部材３２の構成を示す。なお、図中上記図１〜３と
同一の構成要素には同一の符号を付して示してある。小
型の単電池３１の場合は、図４に示すように、正極端子
１６の側縁と絶縁チューブ１８の先端屈曲部１８ａとの
間に露出する封口板１３の面積が非常に小さい。したが
って、上述したような比較的大型単電池用の接続部材１
９のように皿状部の底面を封口板に溶接することは空間
的制約を受けるために困難である。FIGS. 4 to 6 show another embodiment of the first connection member of the present invention, and show a structure of a connection member 32 suitable for connection of a relatively small battery 31. FIG. In the drawings, the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals. In the case of a small cell 31, as shown in FIG. 4, the area of the sealing plate 13 exposed between the side edge of the positive electrode terminal 16 and the bent end portion 18a of the insulating tube 18 is very small. Therefore, the connection member 1 for a relatively large unit cell as described above.
It is difficult to weld the bottom surface of the dish-shaped portion to the sealing plate as shown in FIG.
【００１８】そこで、接続端子部材３２は、図６に示す
ように上記の接続部材１９と同様に環状平面部３２ａと
皿状部３２ｂとから構成され、環状平面部３２ａの上面
は一方の単電池３１の金属ケース１２の底面１２ａに、
皿状部３２ｂの下面は他方の単電池３１の正極端子１６
の上面１６ａにそれぞれ溶接され、両者が電気的に接続
される。Therefore, as shown in FIG. 6, the connection terminal member 32 is composed of an annular flat portion 32a and a dish-shaped portion 32b similarly to the connection member 19 described above, and the upper surface of the annular flat portion 32a is connected to one of the cells. 31 on the bottom surface 12a of the metal case 12;
The lower surface of the dish 32b is connected to the positive electrode terminal 16 of the other cell 31.
Are welded to the upper surface 16a, respectively, and both are electrically connected.
【００１９】この接続部材３２の環状平面部３２ａに
は、前述した接続部材１９と同様に無効電流を低減する
ための切欠き穴３３とこの切欠き穴３３を挟んで両側に
一対の突起３４，３４’がそれぞれ形成されていること
が好ましい。さらに、皿状部３２ｂ底面にも無効電流防
止用のスリット３５とプロジェクション溶接用突起３６
が形成されていることが好ましい。As in the case of the connecting member 19, a notch 33 for reducing the reactive current and a pair of projections 34 on both sides of the notch 33 are formed on the annular flat portion 32a of the connecting member 32. 34 'are preferably formed. Further, a slit 35 for preventing a reactive current and a projection 36 for projection welding are also provided on the bottom surface of the dish-shaped portion 32b.
Is preferably formed.
【００２０】このような接続部材３２を使用して単電池
３１，３１を接続した構造を図４に示す。すなわち、２
個の単電池３１，３１を接続する場合は、まず、接続部
材３２の皿状部３２ｂの底面を一方の電池３１の正極端
子１６の上面１６ａに当接させて加圧しながら接続部材
３２と正極端子１６との間に溶接電流を流す。それによ
って突起３６が溶融し、接続部材３２の皿状部３２ｂの
底部と正極端子１６の上面１６ａとが図４に示す溶接部
３８で溶着される。FIG. 4 shows a structure in which the cells 31 are connected using such a connecting member 32. That is, 2
When connecting the single cells 31, first, the bottom surface of the dish-shaped portion 32 b of the connection member 32 is brought into contact with the upper surface 16 a of the positive electrode terminal 16 of one of the batteries 31, and the connection member 32 and the positive electrode are pressed while being pressed. A welding current flows between the terminal 16. As a result, the protrusion 36 is melted, and the bottom of the dish-shaped portion 32b of the connection member 32 and the upper surface 16a of the positive electrode terminal 16 are welded at the welded portion 38 shown in FIG.
【００２１】ついで、接続部材３２の環状平面部３２ａ
を他方の電池３１の金属ケース１２の底面１２ａに当接
させ、上記と同様に加圧しながら溶接を行い、図４に示
す溶接部３９で両者を溶着する。このとき、溶接電極
（図示せず）は金属ケース１２の底面１２ａと、他方の
電池の絶縁チューブ１８の先端屈曲部１８ａとの間の間
隙３７に挿入される。したがって、接続部材３２の皿状
部３２ｂの深さｄ’は上記と同様、例えば３〜８ｍｍの
範囲で溶接電極を挿入する空間を確保できるように決定
することが好ましい。Next, the annular flat portion 32a of the connecting member 32
Is brought into contact with the bottom surface 12a of the metal case 12 of the other battery 31, and welding is performed while applying pressure in the same manner as described above, and the two are welded at the welded portion 39 shown in FIG. At this time, the welding electrode (not shown) is inserted into the gap 37 between the bottom surface 12a of the metal case 12 and the bent end portion 18a of the insulating tube 18 of the other battery. Therefore, it is preferable that the depth d 'of the dish-shaped portion 32b of the connection member 32 be determined so as to secure a space for inserting the welding electrode in a range of, for example, 3 to 8 mm as described above.
【００２２】さらに、図５に示した単電池３１の接続構
造において、一方の電池３１の金属ケース１２の先端屈
曲部１２ａと他方の電池３１の金属ケース１２の底面１
２ａとが、非常に僅かな間隙で対向していることを勘案
し、前述したような、例えばポリカーボネートなどの合
成樹脂よりなる絶縁リング２７を一方の電池３１の絶縁
チューブ１８の先端屈曲部１８ａと金属ケース１２の底
面１２ａとの間に介在させることが好ましい。Further, in the connection structure of the unit cells 31 shown in FIG. 5, the bent end portion 12a of the metal case 12 of one battery 31 and the bottom surface 1 of the metal case 12 of the other battery 31
2a is opposed by a very small gap, and as described above, the insulating ring 27 made of a synthetic resin such as polycarbonate is connected to the bent end portion 18a of the insulating tube 18 of one battery 31 as described above. It is preferable to interpose between the metal case 12 and the bottom surface 12a.
【００２３】このような接続部材３２を使用して小型の
単電池を複数個接続する場合も図５に示した接続構造体
と同様に、単電池間に僅かな間隙が生じるのみであるた
め、接続体構造としての外観が著しく向上する。そし
て、上記と同様にこの端子部材は皿状部の簡単なプレス
加工のみで作製することができるので、例えば製造時に
深絞り加工などを必要としないという製造上の利点も有
する。When a plurality of small cells are connected using such a connecting member 32, only a slight gap is generated between the cells as in the connection structure shown in FIG. The appearance as a connection structure is remarkably improved. Since the terminal member can be manufactured only by a simple press working of the dish-shaped portion as in the above, there is also an advantage in manufacturing that, for example, deep drawing is not required at the time of manufacturing.
【００２４】なお、上記の接続部材において、環状平面
部ならびに皿状部に形成される切欠き穴および突起の形
状、個数などは上記の各態様に限定されるものではな
く、単電池の種類、溶接条件などに応じて適宜決定され
ることが好ましい。ついで、本発明の電池接続構造体の
第２の接続部材について説明する。図７，８は本発明の
接続部材の一実施形態を示し、接続部材４０は図示のよ
うに左右に２つの接続部、すなわち第１の接続部４０ａ
と第２の接続部４０ｂを同幅の中間部４０ｃで連結した
形状に形成されている。In the connection member, the shape and number of the cutout holes and projections formed in the annular flat portion and the dish-shaped portion are not limited to the above-described embodiments. It is preferable that the temperature be appropriately determined according to welding conditions and the like. Next, the second connection member of the battery connection structure of the present invention will be described. 7 and 8 show one embodiment of the connecting member of the present invention, and the connecting member 40 has two connecting portions on the left and right as shown in FIG.
And the second connecting portion 40b are connected by an intermediate portion 40c having the same width.
【００２５】第１の接続部４０ａは平面状に形成され、
単電池の底部の形状すなわち円形に対応して周方向に沿
って等間隔に複数個例えば４個の切欠き穴４１と、この
切欠き穴４１の各々を挟んで両側に一対のプロジェクシ
ョン溶接用の突起４２，４２が形成されている。切欠き
穴４１はプロジェクション溶接時に無効電流を低減する
ためのものである。この第１の接続部４０ａは後述する
図１０，１１に示すように一方の電池１１の金属ケース
底部１２ａに密着し、溶接されるものである。The first connecting portion 40a is formed in a planar shape,
A plurality of notches 41, for example, four notches 41 are provided at regular intervals along the circumferential direction corresponding to the shape of the bottom of the unit cell, that is, a circle, and a pair of projection weldings is provided on both sides of each of the notches 41. Projections 42, 42 are formed. The notch 41 is for reducing a reactive current at the time of projection welding. The first connecting portion 40a is in close contact with and welded to the metal case bottom portion 12a of one of the batteries 11 as shown in FIGS.
【００２６】第２の接続部４０ｂは上記の第１の接続部
４０ａから中間部４０ｃを経て延出形成されたもので、
他方の電池１１一端部の封口板１３に当接する環状の凹
部４３が形成されている。この環状凹部４３の中心には
正極端子１６との接触を回避するための開口４４が形成
され、この開口４４から正極端子１６が突出できるよう
になっている（図１１）。そして、環状凹部４３の底面
４３ａにも、上記と同様に無効電流を低減するための切
欠き穴４５と、この切欠き穴４５の各々を挟んで両側に
一対のプロジェクション溶接用の突起４６，４６が形成
されている。The second connecting portion 40b is formed by extending from the first connecting portion 40a through the intermediate portion 40c.
An annular concave portion 43 is formed to contact the sealing plate 13 at one end of the other battery 11. An opening 44 for avoiding contact with the positive electrode terminal 16 is formed at the center of the annular concave portion 43, and the positive electrode terminal 16 can protrude from the opening 44 (FIG. 11). Similarly, a notch hole 45 for reducing the reactive current and a pair of projection welding projections 46, 46 on both sides of each of the notch holes 45 are also provided on the bottom surface 43a of the annular concave portion 43. Are formed.
【００２７】これらのプロジェクション溶接用の突起４
２，４６の形成方法はとくに限定されるものではない
が、例えば図９に示すように接続部材４０をプレス成形
加工により製造する際に、同時に形成すると工程的な観
点からも簡便である。すなわち、突起４６について説明
すると、環状凹部４３の底面４３ａから所定の高さＴだ
け突出するように成形加工すればよい。この高さＴは、
例えば接続部材４０の板厚の0.5〜1.0倍程度にすること
が好ましい。These projections 4 for projection welding are used.
The method for forming the connecting members 2 and 46 is not particularly limited. For example, as shown in FIG. 9, when the connecting members 40 are manufactured by press forming as well as formed at the same time, it is convenient from the viewpoint of the process. That is, to explain the protrusion 46, it is sufficient to form the protrusion so as to protrude from the bottom surface 43a of the annular concave portion 43 by a predetermined height T. This height T is
For example, the thickness is preferably about 0.5 to 1.0 times the thickness of the connection member 40.
【００２８】図１０，１１は単電池１１、例えば円筒型
ニッケル・水素二次電池を半径方向に２個並置して接続
部材４０により直列に接続した状態を示す斜視図および
概念的断面図である。なお。図中、上記の図１および図
４と同一の構成要素には同一の符号を付して示してあ
る。このような単電池１１を２個並置して接続する場合
は、図１０，１１に示すように一方の単電池１１の一端
面の正極端子１６の上面と、他方の電池１１の他端面の
負極端子を兼ねる金属ケース１２の露出した底部１２ａ
とがほぼ面一となるようにその側周面同士を密着させて
隣接配置し、両者の間に接続部材４０を介在させて、こ
の接続部材４０と各単電池１１，１１とを溶接して電気
的に接続した構成とする。FIGS. 10 and 11 are a perspective view and a conceptual cross-sectional view, respectively, showing a state in which two unit cells 11, for example, cylindrical nickel-metal hydride secondary cells are arranged side by side in the radial direction and connected in series by a connecting member 40. . In addition. In the drawing, the same components as those in FIGS. 1 and 4 are denoted by the same reference numerals. When two such cells 11 are connected side by side, as shown in FIGS. 10 and 11, the upper surface of the positive electrode terminal 16 on one end of one cell 11 and the negative electrode on the other end of the other cell 11 Exposed bottom 12a of metal case 12 also serving as terminal
The side peripheral surfaces are closely attached to each other so as to be substantially flush with each other, a connecting member 40 is interposed therebetween, and the connecting member 40 and the unit cells 11 are welded. It is configured to be electrically connected.
【００２９】具体的には、上述したように一方の電池１
１の金属ケース底部１２ａと他方の電池１１の絶縁チュ
ーブ１８の屈曲面上部１８ａとが面一となるように外周
面を密着させて配置し、第１の接続部４０ａを金属ケー
ス底部１２ａに当接させるとともに、第２の接続部４０
ｂの環状凹部４３の底面４３ａを封口板１３に当接さ
せ、それぞれ加圧しながら接続部材４０との間に溶接電
流を流す。それによって突起４２，４２，４６，４６が
溶融し、接続部材４０の第１の接続部４０ａが溶接部４
７（２箇所のみ図示）で溶着し、第２の接続部４０が溶
着部４８（２箇所のみ図示）でそれぞれ溶着される。Specifically, as described above, one of the batteries 1
The first metal case bottom portion 12a and the bent surface upper portion 18a of the insulating tube 18 of the other battery 11 are placed in close contact with the outer peripheral surface so as to be flush, and the first connection portion 40a is brought into contact with the metal case bottom portion 12a. And the second connecting portion 40
The bottom surface 43a of the annular concave portion 43 of b is brought into contact with the sealing plate 13, and a welding current is caused to flow between the connecting member 40 and each while pressurizing. As a result, the projections 42, 42, 46, 46 are melted, and the first connecting portion 40a of the connecting member 40 is
7 (only two locations are shown), and the second connecting portions 40 are welded at the welded portions 48 (only two locations are shown).
【００３０】図１２，１３は第２の接続部材の他の態様
を示すものであり、図７，８に示した接続部材４０をさ
らに簡単な構造にしたものである。すなわち、この接続
部材５０も同様に第１の接続部５０ａ、第２の接続部５
０ｂ、ならびに両者を連結する中間部５０ｃから構成さ
れているが、第２の接続部５０ｂは上記の接続部材４０
のように環状の凹部４３が形成されているのではなく、
図１２，１３に示すように、中間部５０ｃから所定の高
さ、すなわち、一方の電池の金属ケース１２と他方の電
池の封口板の高低差に相当する段差５０ｄが形成され、
段差５０ｄから続く平面状の第２の接続部５０ｂには上
記と同様に正極端子１６を突出させるための開口５１が
形成されている。FIGS. 12 and 13 show another embodiment of the second connecting member, in which the connecting member 40 shown in FIGS. 7 and 8 has a simpler structure. That is, the connection member 50 is similarly connected to the first connection portion 50a and the second connection portion 5a.
0b and an intermediate portion 50c connecting the two, the second connecting portion 50b is connected to the connecting member 40
Instead of forming the annular concave portion 43 as in
As shown in FIGS. 12 and 13, a predetermined height from the intermediate portion 50c, that is, a step 50d corresponding to the height difference between the metal case 12 of one battery and the sealing plate of the other battery is formed,
An opening 51 for projecting the positive electrode terminal 16 is formed in the planar second connecting portion 50b following the step 50d in the same manner as described above.
【００３１】また、この接続部材５０の各接続部５０
ａ，５０ｂにも上記と同様に切欠き穴５２，５３および
各切欠き穴５２，５３を挟む一対のプロジェクション溶
接用の突起が５４，５４および５５，５５がそれぞれ形
成されている。このような構成とすることにより、上記
の接続部材４０よりもさらに簡単なプレス成形加工で製
造することができ、製造コストを低減する上でも有利で
ある。Each connecting portion 50 of the connecting member 50
Similarly, the notches 52, 53 and a pair of projection welding projections 54, 54, 55, 55 sandwiching the notches 52, 53 are also formed on the a, 50b. With such a configuration, the connection member 40 can be manufactured by a simpler press forming process than the connection member 40 described above, which is advantageous in reducing the manufacturing cost.
【００３２】このような接続部材５０を使用して単電池
１１，１１を接続した構造を図１４，１５に示す。な
お、図中、図１０，１１と同一の構成要素には同一の符
号を付して示してある。さらに、図１５においては、２
個の単電池１１，１１の接続箇所のみを示し、他端部は
省略した。すなわち、上記と同様に一方の単電池１１の
金属ケース底部１２ａと他方の単電池１１の絶縁チュー
ブ１８の屈曲面上部１８ａとが面一となるように隣接配
置し、第１の接続部５０ａを金属ケース底部１２ａに当
接させるとともに第２の接続部５０ｂの平面部を封口板
１３に当接させ、それぞれ加圧しながら接続部材５０と
の間に溶接電流を流す。それによって突起５４，５４お
よび５５，５５がそれぞれ溶融し、接続部材５０の第
１、第２の接続部５０ａ，５０ｂが図１４に示す溶接部
５６（２箇所のみ図示），５７（１箇所のみ図示）で溶
着される。FIGS. 14 and 15 show a structure in which the cells 11 are connected using the connecting member 50. FIG. In the drawings, the same components as those in FIGS. 10 and 11 are denoted by the same reference numerals. Further, in FIG.
Only the connection points of the single cells 11 are shown, and the other end is omitted. That is, similarly to the above, the metal case bottom part 12a of one cell 11 and the bent surface upper part 18a of the insulating tube 18 of the other cell 11 are arranged adjacently to be flush with each other, and the first connection part 50a is The welding portion is brought into contact with the metal case bottom portion 12a and the flat portion of the second connection portion 50b is brought into contact with the sealing plate 13, and a welding current is caused to flow between the connection member 50 and each of them while applying pressure. As a result, the projections 54, 54 and 55, 55 are melted, respectively, and the first and second connection portions 50a, 50b of the connection member 50 are welded portions 56 (only two portions are shown) and 57 (only one portion) shown in FIG. (Shown).
【００３３】図１６，１７は上記の接続部材４０，５０
のさらに好ましい態様を示し、各々の柔軟性を向上させ
た構成である。なお、図中、図７，１２と同一の構成要
素には同一の符号を付して示してある。具体的には各々
の接続部材４０，５０の中間部４０ｃ，５０ｃに電池の
並置方向と直交する微少な間隙のスリット５８，５９を
形成したものである。このスリット５８，５９は少なく
とも１箇所に形成されればよいが、図示したように、各
々の接続部材４０，５０の中間部４０ｃ，５０ｃの両縁
から交互に中心に向かって複数本形成することによりい
っそう柔軟性の向上効果が増大するので好ましい。FIGS. 16 and 17 show the connecting members 40 and 50 described above.
Are more preferred embodiments, and each configuration is improved in flexibility. In the drawings, the same components as those in FIGS. 7 and 12 are denoted by the same reference numerals. Specifically, slits 58, 59 having minute gaps perpendicular to the juxtaposition direction of the batteries are formed in the intermediate portions 40c, 50c of the respective connection members 40, 50. The slits 58 and 59 may be formed in at least one place. As shown, a plurality of slits 58 and 59 are formed alternately from both edges of the intermediate portions 40c and 50c of the connection members 40 and 50 toward the center. Is more preferable because the effect of improving flexibility is further increased.
【００３４】なお、上記の各接続部材において、第１お
よび第２の接続部に形成される切欠き穴およびプロジェ
クション溶接用突起の形状、個数などは上記の各態様に
限定されるものではなく、単電池の種類、溶接条件など
に応じて適宜決定されることが好ましい。続いて、上記
の第１および第２の接続部材を使用した本発明の電池接
続構造体の構成について説明する。なお、本発明におい
ては第１および第２の接続部材の少なくともいずれか一
方を対応する連結部において使用すれば足りるが、両方
の連結部それぞれに本発明の接続部材を使用することが
最も好ましい態様であるため、以下に第１および第２の
接続部材を同時に使用した接続構造体について述べる。In each of the above connection members, the shape and number of the notch holes and the projection welding projections formed in the first and second connection portions are not limited to the above embodiments. It is preferable that the temperature is appropriately determined according to the type of the cell, welding conditions, and the like. Subsequently, the configuration of the battery connection structure of the present invention using the first and second connection members will be described. In the present invention, it is sufficient that at least one of the first and second connecting members is used in the corresponding connecting portion, but it is most preferable to use the connecting member of the present invention in each of both connecting portions. Therefore, a connection structure using the first and second connection members simultaneously will be described below.
【００３５】まず、単電池を軸方向に直列に接続したユ
ニットを互いに連結した接続構造体について述べる。図
１８に示した接続構造体６０は、複数個ここでは５個の
単電池Ａ１〜Ａ５を例えば第１の接続部材１９を用いて
軸方向に直列に接続して得られたユニットＡと、これら
の単電池Ａ１〜Ａ５と同種同型の単電池Ｂ１〜Ｂ５を同
様に接続部材１９を用いて軸方向に直列に接続して得ら
れたユニットＢからなる。これらのユニットＡ，Ｂを互
いに上下逆向きに並置し、その一端部の２個の電池すな
わち半径方向に隣接する単電池Ａ１と単電池Ｂ５とに、
第２の接続部材４０をそれぞれ溶接して両者を直列に接
続する。First, a connection structure in which units in which unit cells are connected in series in the axial direction will be described. The connection structure 60 shown in FIG. 18 includes a unit A obtained by connecting a plurality of unit cells A1 to A5 in this example in the axial direction using the first connection member 19, for example. A unit B is obtained by connecting unit cells B1 to B5 of the same type and the same type as the unit cells A1 to A5 in the same manner using the connecting member 19 in series in the axial direction. These units A and B are arranged side by side upside down, and two batteries at one end thereof, that is, a unit cell A1 and a unit cell B5 which are radially adjacent to each other,
The second connection members 40 are each welded to connect them in series.
【００３６】この構造体６０においては、図中右側のユ
ニットＢの最下端の単電池Ｂ１の下面の正極６１から最
上端の単電池Ｂ５までが軸方向に直列接続され、この単
電池Ｂ５と隣接する左側のユニットＡの最上端の単電池
Ａ１とが半径方向に直列接続される。さらに、この単電
池Ａ１とユニットＡの最下端の単電池Ａ５の下面の負極
６４との間が軸方向に直列接続され、結果として、１０
個の単電池Ａ１〜Ａ５，Ｂ１〜Ｂ５を直列に接続した接
続構造体となる。In this structure 60, the positive electrode 61 on the lower surface of the lowermost unit cell B1 of the unit B on the right side in the figure and the uppermost unit cell B5 are connected in series in the axial direction, and are adjacent to the unit cell B5. And the uppermost unit cell A1 of the left unit A is connected in series in the radial direction. Further, the unit cell A1 and the negative electrode 64 on the lower surface of the unit cell A5 at the lowermost end of the unit A are connected in series in the axial direction.
This is a connection structure in which the unit cells A1 to A5 and B1 to B5 are connected in series.
【００３７】このような接続構造体６０は第１の接続部
材１９により軸方向に直列に接続されてなる単電池ユニ
ットＡ，Ｂ…を所用の数だけ用意し、そのユニットの端
部を交互に第２の接続部材４０により連結していけば、
所用の出力電圧を有する電池接続構造体を容易に作製す
ることが可能である。なお、この軸方向の接続ユニット
の個数、半径方向に並置されるユニットの個数は目的と
する出力電圧に応じて適宜設定することができる。In such a connection structure 60, the required number of unit cells A, B,... Connected in series in the axial direction by the first connection member 19 are prepared, and the ends of the units are alternately arranged. If connected by the second connection member 40,
It is possible to easily manufacture a battery connection structure having a required output voltage. The number of connection units in the axial direction and the number of units juxtaposed in the radial direction can be appropriately set according to the target output voltage.
【００３８】図１９は、上記のような軸方向のユニット
を組み合わせてなる接続構造体の他の態様を示し、図１
９（ｃ）に示す接続構造体７０は軸方向に２個直列に接
続された単電池ユニットＣ〜Ｈの６ユニットを、平面視
６角形となるように交互に上下を逆向きに隣接配置した
ものである。すなわち、まず図１９（ａ）に示すように
２個の単電池例えばＣ１とＣ２とを軸方向に配置して第
１の連結部すなわち単電池Ｃ２の正極７１と単電池Ｃ１
の負極７２を第１の接続部材１９により接続してユニッ
トＣを作製する（図１９（ｂ））。しかるのち、図１９
（ｃ）に示したように、全く同様にして作製されたユニ
ットＣ〜Ｈを交互に逆向きになるように環状すなわち平
面視６角形状に隣接配置し、隣接する２個のユニットの
端部の２個の単電池の異極同士（第２の連結部）を第２
の接続部材４０により接続する。その結果、ユニットＣ
の単電池Ｃ１の下面の正極７３から単電池Ｃ２→単電池
Ｄ１→単電池Ｄ２→単電池Ｅ１→…→単電池Ｈ２の下面
の負極までが直列に接続されることになる。FIG. 19 shows another embodiment of the connection structure formed by combining the units in the axial direction as described above.
In the connection structure 70 shown in FIG. 9 (c), six unit cells C to H connected in series in the axial direction are arranged adjacently alternately upside down so as to form a hexagon in plan view. Things. That is, first, as shown in FIG. 19 (a), two unit cells, for example, C1 and C2 are arranged in the axial direction, and the first connecting portion, ie, the positive electrode 71 of the unit cell C2 and the unit cell C1
The negative electrode 72 is connected by the first connecting member 19 to produce the unit C (FIG. 19B). After that, FIG.
As shown in (c), the units C to H manufactured in exactly the same manner are arranged adjacently in an annular shape, that is, in a hexagonal shape in plan view, so that the units C to H are alternately turned in opposite directions, and the ends of two adjacent units are arranged. The opposite poles (second connecting portion) of the two unit cells
Are connected by the connecting member 40 of FIG. As a result, unit C
From the positive electrode 73 on the lower surface of the cell C1 to the cell C2 → the cell D1 → the cell D2 → the cell E1... →→ the negative electrode on the lower surface of the cell H2.
【００３９】この接続構造体７０は一方側から出力電圧
を取り出す場合に有利である。さらに、ユニットを環状
すなわち平面視６角形状に接続してあるため、中心に空
洞７５が形成され、この空洞７５が熱冷却効果を発揮す
るという利点もある。つづいて、図２０および図２１
は、半径方向に並置されて直列に接続された電池ユニッ
トを軸方向に所定数だけ接続して得られる電池接続構造
体の例を示したものである。This connection structure 70 is advantageous when extracting an output voltage from one side. Further, since the units are connected in a ring shape, that is, in a hexagonal shape in plan view, a cavity 75 is formed at the center, and there is an advantage that the cavity 75 exhibits a thermal cooling effect. Subsequently, FIG. 20 and FIG.
Shows an example of a battery connection structure obtained by connecting a predetermined number of battery units that are juxtaposed in the radial direction and connected in series in the axial direction.
【００４０】図２０はそれぞれ単電池３個で構成された
ユニットを３段重ねてなる接続構造体８０であり、図２
０（ａ）に示すように、まず３個の単電池Ｉ１〜Ｉ３を
互いに隣接させてユニットＩを作製する。同様に単電池
Ｊ１〜Ｊ３，単電池Ｋ１〜Ｋ３により、それぞれユニッ
トＪ，Ｋを作製する。しかるのち、各ユニットＩ〜Ｋを
構成する３個の電池を直列に接続する。具体的には、第
１のユニットＩにおいて、まず単電池Ｉ２の負極８４と
単電池Ｉ３の上面の正極８５とを第２の接続部材４０に
より直列に接続する。FIG. 20 shows a connection structure 80 in which units each formed of three unit cells are stacked in three stages.
As shown in FIG. 0 (a), first, a unit I is manufactured by making three unit cells I1 to I3 adjacent to each other. Similarly, units J and K are produced from the cells J1 to J3 and the cells K1 to K3, respectively. Thereafter, the three batteries constituting each of the units I to K are connected in series. Specifically, in the first unit I, first, the negative electrode 84 of the cell I2 and the positive electrode 85 on the upper surface of the cell I3 are connected in series by the second connection member 40.
【００４１】それと同時に単電池Ｉ１の下面の負極８２
と単電池Ｉ２の下面の正極８３とを同様に第２の接続部
材４０により直列に接続する。これにより、ユニットＩ
においては、単電池Ｉ１の正極８１→単電池Ｉ１の負極
８２→単電池Ｉ２の正極８３→単電池Ｉ２の負極８４→
単電池Ｉ３の正極８５→単電池Ｉ３の負極８６までが直
列に接続される。At the same time, the negative electrode 82 on the lower surface of the cell I1
Similarly, the positive electrode 83 on the lower surface of the unit cell I2 is connected in series by the second connecting member 40. Thereby, the unit I
, The positive electrode 81 of the cell I1 → the negative electrode 82 of the cell I1 → the positive electrode 83 of the cell I2 → the negative electrode 84 of the cell I2 →
The part from the positive electrode 85 of the unit cell I3 to the negative electrode 86 of the unit cell I3 is connected in series.
【００４２】同様にして、第２のユニットＪにおいても
３個の単電池Ｊ１〜Ｊ３を接続部材４０により直列に接
続しておき、ついで、第１のユニットＩと第２のユニッ
トＪとの間を直列に接続する。すなわち、具体的には第
１のユニットＩの単電池Ｉ３の負極８６と第２のユニッ
トの単電池Ｊ３の正極８７とが接続部材１９により直列
に接続される。Similarly, in the second unit J, three unit cells J1 to J3 are connected in series by the connecting member 40, and then the first unit I and the second unit J are connected. Are connected in series. That is, specifically, the negative electrode 86 of the unit cell I3 of the first unit I and the positive electrode 87 of the unit cell J3 of the second unit I are connected in series by the connecting member 19.
【００４３】このとき、第１のユニットＩの単電池Ｉ１
の負極８２と第２のユニットＪの単電池Ｊ１の正極８
８、ならびに、第１のユニットＩの単電池Ｉ２の正極８
３と第２のユニットＪの単電池Ｊ２の負極８９とが導通
しないように、２個の接続部材４０と接続部材４０との
間に、例えばポリカーボネートなどの合成樹脂やゴムよ
りなる絶縁板９２を介在させることが必要である。At this time, the unit cell I1 of the first unit I
Negative electrode 82 and positive electrode 8 of unit cell J1 of second unit J
8, and the positive electrode 8 of the cell I2 of the first unit I
An insulating plate 92 made of, for example, a synthetic resin such as polycarbonate or rubber is provided between the two connecting members 40 so that the third and the negative electrodes 89 of the unit cells J2 of the second unit J do not conduct. It is necessary to intervene.
【００４４】この絶縁板９２を介在させる手段として
は、ユニットＩおよびユニットＪの少なくとも一方の接
続部材４０に接着剤もしくは接着テープなどにより貼着
する方法、または、少なくとも一方の接続部材４０にあ
らかじめ絶縁材を保護カバーとして被着しておく方法な
どを採用することができる。さらに、第２のユニットＪ
と第３のユニットＫとを上記と同様にして単電池Ｊ１の
負極９０と単電池Ｋ１の正極９１とを第１の接続部材１
９により直列に接続することにより連結する。この場合
も同様に、第２のユニットＪの下面の接続部材４０と第
３のユニットＫの上面の接続部材４０との間に上記のよ
うな絶縁板９２を介在させることが必要である。As a means for interposing the insulating plate 92, a method of attaching to at least one of the connecting members 40 of the unit I and the unit J with an adhesive or an adhesive tape or a method of insulating the at least one of the connecting members 40 in advance is used. For example, a method of attaching a material as a protective cover can be adopted. Further, the second unit J
And the third unit K in the same manner as described above, and connects the negative electrode 90 of the unit cell J1 and the positive electrode 91 of the unit cell K1 to the first connecting member 1.
9 to connect by connecting in series. In this case, similarly, it is necessary to interpose the above-described insulating plate 92 between the connecting member 40 on the lower surface of the second unit J and the connecting member 40 on the upper surface of the third unit K.
【００４５】このようにして、第１〜第３のユニットＪ
〜Ｋを順次接続することにより、図２０（ｂ）に示すよ
うな電池接続構造体８０が得られる。このような接続構
造体は、直列に接続された３個の単電池からなる電池ユ
ニットを所望の数だけ用意しておき、必要に応じてユニ
ット数を決定し、それらのユニット間を接続部材により
直列に接続することにより簡単に作製することができ
る。また、このような接続構造体は構造体の上下両端か
ら電圧を取り出す場合に有利である。Thus, the first to third units J
To K are sequentially connected to obtain a battery connection structure 80 as shown in FIG. Such a connection structure prepares a desired number of battery units consisting of three unit cells connected in series, determines the number of units as necessary, and connects the units with a connection member. It can be easily manufactured by connecting them in series. Further, such a connection structure is advantageous when voltage is taken out from both upper and lower ends of the structure.
【００４６】図２１に示した電池接続構造体１００は、
図２０の電池接続構造体の各ユニットを構成する単電池
の数を５個にしたものである。すなわち、図２１（ａ）
に示すように、単電池５個を互いに隣接するように交互
に逆向きにして環状に配置し、上記と同様に隣り合う異
極同士を接続部材４０により連結することにより、各ユ
ニットＬ、Ｍ、Ｎを作製する。例えば第１のユニットＬ
の場合、単電池Ｌ１の正極１０１→単電池Ｌ１の負極１
０２→単電池Ｌ２の正極１０３→単電池Ｌ２の負極１０
４→単電池Ｌ３の正極１０５→単電池Ｌ３の負極１０６
→単電池Ｌ４の正極１０７→単電池Ｌ４の負極１０８→
単電池Ｌ５の正極１０９→単電池Ｌ５の負極１１０とい
うように直列に接続される。The battery connection structure 100 shown in FIG.
The number of cells constituting each unit of the battery connection structure in FIG. 20 is set to five. That is, FIG.
As shown in FIG. 5, five units are alternately arranged so as to be adjacent to each other and arranged in a ring shape, and adjacent different poles are connected to each other by the connecting member 40 in the same manner as described above, whereby each unit L, M , N. For example, the first unit L
In the case of, the positive electrode 101 of the unit cell L1 → the negative electrode 1 of the unit cell L1
02 → positive electrode 103 of unit cell L2 → negative electrode 10 of unit cell L2
4 → Positive electrode 105 of unit cell L3 → Negative electrode 106 of unit cell L3
→ Positive electrode 107 of unit cell L4 → Negative electrode 108 of unit cell L4 →
The positive electrode 109 of the unit cell L5 is connected in series with the negative electrode 110 of the unit cell L5.
【００４７】第２のユニットＭおよび第３のユニットＮ
においても同様である。そして、これらの各ユニットＬ
〜Ｎの間が接続部材１９により軸方向に連結され、図２
１（ｂ）に示すような電池接続構造体１００が得られ
る。なお、各ユニット間を重ねるときに導通する接続部
材４０間には、上記と同様な絶縁板９２を介在させるこ
とが必要である。この電池接続構造体においても、中心
に軸方向に貫通する空洞１１１が形成され、この空洞１
１１により熱冷却効果が発揮されるので有利である。Second unit M and third unit N
The same applies to. Then, each of these units L
To N are connected in the axial direction by a connecting member 19, and FIG.
A battery connection structure 100 as shown in FIG. 1 (b) is obtained. Note that it is necessary to interpose an insulating plate 92 similar to the above between the connecting members 40 that conduct when the units are stacked. Also in this battery connection structure, a cavity 111 penetrating in the axial direction is formed at the center.
11 is advantageous because a thermal cooling effect is exhibited.
【００４８】以上のように、本発明の電池接続構造体
は、各接続構造体を構成する電池ユニットの接続方法す
なわち軸方向の接続か、半径方向の接続か、さらには、
ユニットを構成する単電池数などを適宜選択することに
より、各種の用途に広範に対応することが可能である。As described above, the battery connection structure of the present invention can be used to connect the battery units constituting each connection structure, that is, whether the connection is in the axial direction or the radial direction.
By appropriately selecting the number of cells constituting the unit, it is possible to widely support various uses.
【００４９】[0049]
【発明の効果】以上の説明から明らかなように、本発明
の電池接続構造体は、簡単な構造の接続部材を使用する
ことにより軸方向ならびに半径方向に配置された単電池
が確実に直列接続されているものであり、軸方向に接続
されたユニットもしくは半径方向に接続されたユニット
を所用数組み合わせることにより、目的とする形状およ
び出力電圧を有する構造体を実現することができる。し
かも、全体の構造をコンパクトにすることができるため
その工業的価値は極めて大である。As is apparent from the above description, the battery connection structure of the present invention can reliably connect the cells arranged in the axial direction and the radial direction in series by using a connection member having a simple structure. By combining a required number of units connected in the axial direction or units connected in the radial direction, a structure having a desired shape and output voltage can be realized. In addition, since the entire structure can be made compact, its industrial value is extremely large.
【図１】本発明の電池接続構造体の軸方向の連結部（第
１の連結部）において使用される接続部材の接続構造を
示す断面図である。FIG. 1 is a sectional view showing a connection structure of a connection member used in an axial connection portion (first connection portion) of a battery connection structure of the present invention.
【図２】図１の接続部材と単電池の位置関係を示す斜視
図である。FIG. 2 is a perspective view illustrating a positional relationship between a connection member and a unit cell in FIG. 1;
【図３】図１の接続部材の側面図である。FIG. 3 is a side view of the connection member of FIG. 1;
【図４】本発明の電池接続構造体の軸方向の連結部にお
いて使用される接続部材の他の構成を示す断面図であ
る。FIG. 4 is a cross-sectional view showing another configuration of a connection member used in an axial connection portion of the battery connection structure of the present invention.
【図５】図４の接続部材と単電池の位置関係を示す斜視
図である。FIG. 5 is a perspective view showing a positional relationship between the connection member of FIG. 4 and a unit cell.
【図６】図４の接続部材の側面図である。FIG. 6 is a side view of the connecting member of FIG. 4;
【図７】本発明の電池接続構造体の半径方向の連結部
（第２の連結部）において使用される接続部材の一実施
形態を示す平面図である。FIG. 7 is a plan view showing one embodiment of a connection member used in a radial connection portion (second connection portion) of the battery connection structure of the present invention.
【図８】図７のVIII−VIII線に沿う断面図である。FIG. 8 is a sectional view taken along line VIII-VIII in FIG.
【図９】図７のプロジェクション溶接用突起の部分拡大
図である。9 is a partially enlarged view of the projection welding projection of FIG. 7;
【図１０】図４の電池用接続部材を使用して２個の単電
池を接続した状態を示す斜視図である。FIG. 10 is a perspective view showing a state where two unit cells are connected using the battery connecting member of FIG. 4;
【図１１】図１０の概念的断面図である。FIG. 11 is a conceptual cross-sectional view of FIG.
【図１２】本発明の半径方向の連結部において使用され
る接続部材の他の実施形態を示す平面図である。FIG. 12 is a plan view showing another embodiment of the connection member used in the radial connection portion of the present invention.
【図１３】図１２のXIII−XIII線に沿う断面図である。FIG. 13 is a sectional view taken along the line XIII-XIII of FIG.
【図１４】図１２の電池用接続部材を使用して２個の単
電池を接続した状態を示す斜視図である。FIG. 14 is a perspective view showing a state where two unit cells are connected using the battery connecting member of FIG. 12;
【図１５】図１４の概念的一部断面図である。FIG. 15 is a conceptual partial sectional view of FIG. 14;
【図１６】図７の電池用接続部材のさらに好適な実施形
態を示す平面図である。FIG. 16 is a plan view showing a further preferred embodiment of the battery connecting member of FIG. 7;
【図１７】図１２の電池用接続部材のさらに好適な実施
形態を示す平面図である。FIG. 17 is a plan view showing a further preferred embodiment of the battery connecting member of FIG. 12;
【図１８】本発明の電池接続構造体の一実施形態を示す
斜視図である。FIG. 18 is a perspective view showing one embodiment of a battery connection structure of the present invention.
【図１９】本発明の電池接続構造体の他の実施形態を示
す斜視図である。FIG. 19 is a perspective view showing another embodiment of the battery connection structure of the present invention.
【図２０】本発明の電池接続構造体の他の実施形態を示
す斜視図である。FIG. 20 is a perspective view showing another embodiment of the battery connection structure of the present invention.
【図２１】本発明の電池接続構造体の他の実施形態を示
す斜視図である。FIG. 21 is a perspective view showing another embodiment of the battery connection structure of the present invention.
１１，３１ 単電池 １２ 金属ケース（負極端子） １３ 封口板 １６ 正極端子 １８ 絶縁チューブ １９，３２ 電池用接続部材 １９ａ，３２ａ 環状平面部 １９ｂ，３２ｂ 皿状部 １９ｃ 開口 20,22,33,35 切欠き穴 21,21',23,23',34,34',36 プロジェクション溶接用
突起 ２７ 絶縁リング 40,50 電池用接続部材（半径方向） 40a,50a 第１の接続部 40b,50b 第２の接続部 40c,50c 中間部 50d 段差部 41,45,52,53 切欠き穴 42,46,54,55 プロジェクション溶接用突起 60,70,80,100 接続構造体 75,111 空洞 58,59 切欠き 92 絶縁板11, 31 unit cell 12 metal case (negative electrode terminal) 13 sealing plate 16 positive electrode terminal 18 insulating tube 19, 32 battery connecting member 19a, 32a annular flat portion 19b, 32b dish portion 19c opening 20, 22, 33, 35 cut Notch 21,21 ', 23,23', 34,34 ', 36 Projection welding projection 27 Insulation ring 40,50 Battery connection member (radial direction) 40a, 50a First connection portion 40b, 50b Second Connection part 40c, 50c Middle part 50d Step part 41, 45, 52, 53 Notch hole 42, 46, 54, 55 Projection welding projection 60, 70, 80, 100 Connection structure 75, 111 Cavity 58, 59 Notch 92 Insulation plate
Claims (9)
両者を直列に接続する第１の電池間連結部と、前記２個
の単電池を半径方向に並置して両者を直列に接続する第
２の電池間連結部とを有する電池接続構造体において、
前記第１の電池間連結部において使用される接続部材
が、一方の単電池の底部に当接する環状平面部と、この
環状平面部の内周縁から連続して一側に突出形成されて
他方の単電池の電極端子または金属製の封口板に当接す
る皿状部とからなる接続部材であることを特徴とする電
池接続構造体。1. A first inter-battery connecting portion for arranging two cylindrical cells in the axial direction and connecting them in series, and connecting the two cells in a radial direction and connecting them in series And a second inter-battery connection part connected to the battery connection structure.
A connecting member used in the first inter-battery connecting portion is formed into an annular flat portion abutting against the bottom of one of the cells, and is formed so as to protrude to one side continuously from an inner peripheral edge of the annular flat portion to form the other. A battery connection structure comprising: a connection member comprising an electrode terminal of a unit cell or a dish-shaped portion that abuts a metal sealing plate.
両者を直列に接続する第１の電池間連結部と、前記２個
の単電池を半径方向に並置して両者を直列に接続する第
２の電池間連結部とを有する電池接続構造体において、
前記第２の電池間連結部において使用される接続部材
が、一方の電池の底部に当接する平面状の第１の接続部
と、この第１の接続部から延出され、他方の電池の正極
端子が突出可能な開口が形成されるとともに、前記他方
の単電池の封口板に当接する環状の凹部もしくは前記第
１の接続部と段差をもって形成された平面部を有する第
２の接続部とからなる接続部材であることを特徴とする
電池接続構造体。2. A first inter-battery connecting portion for arranging two cylindrical cells in the axial direction and connecting them in series, and connecting the two cells in a radial direction and connecting them in series And a second inter-battery connection part connected to the battery connection structure.
A connecting member used in the second inter-battery connecting portion has a planar first connecting portion abutting on a bottom portion of one of the batteries and a positive electrode of the other battery extending from the first connecting portion. An opening through which a terminal can protrude is formed, and an annular concave portion or the first connection portion abutting on the sealing plate of the other unit cell and the second connection portion having a flat portion formed with a step are provided. A battery connection structure, characterized in that it is a connection member.
両者を直列に接続する第１の電池間連結部と、前記２個
の単電池を半径方向に並置して両者を直列に接続する第
２の電池間連結部とを有する電池接続構造体において、
前記第１の電池間連結部において使用される接続部材
が、一方の単電池の底部に当接する環状平面部と、この
環状平面部の内周縁から連続して一側に突出形成されて
他方の単電池の電極端子または金属製の封口板に当接す
る皿状部とからなる接続部材であり、かつ、前記第２の
電池間連結部において使用される接続部材が、一方の電
池の底部に当接する平面状の第１の接続部と、この第１
の接続部から延出され、他方の電池の正極端子が突出可
能な開口が形成されるとともに、前記他方の単電池の封
口板に当接する環状の凹部もしくは前記第１の接続部と
段差をもって形成された平面部を有する第２の接続部と
からなる接続部材であることを特徴とする電池接続構造
体。3. A first inter-battery connecting portion for arranging two cylindrical cells in the axial direction and connecting them in series, and connecting the two cells in a radial direction and connecting them in series And a second inter-battery connection part connected to the battery connection structure.
A connecting member used in the first inter-battery connecting portion is formed into an annular flat portion abutting against the bottom of one of the cells, and is formed so as to protrude to one side continuously from an inner peripheral edge of the annular flat portion to form the other. A connecting member comprising an electrode terminal of a unit cell or a dish-shaped portion which is in contact with a metal sealing plate, and the connecting member used in the second inter-battery connecting portion is in contact with the bottom of one of the batteries. A first connecting portion having a planar shape in contact with the first connecting portion;
An opening is formed extending from the connection portion of the other cell and capable of protruding the positive electrode terminal of the other battery, and is formed with an annular concave portion or a step with the first connection portion which abuts on the sealing plate of the other cell. And a second connecting portion having a flat surface portion.
前記環状平面部および／または前記皿状部に、プロジェ
クション溶接用の突起が形成されている請求項１または
３に記載の電池接続構造体。4. The connecting member of the first inter-battery connecting portion,
4. The battery connection structure according to claim 1, wherein a projection for projection welding is formed on the annular flat portion and / or the dish-shaped portion. 5.
前記環状平面部および／または前記皿状部には、溶接時
に発生する無効電流低減用の切欠き穴が形成されている
請求項１，３または４に記載の電池接続構造体。5. The connecting member of the first inter-battery connecting portion,
5. The battery connection structure according to claim 1, wherein a cutout hole for reducing a reactive current generated at the time of welding is formed in the annular flat portion and / or the dish-shaped portion.
前記環状平面部が、前記円筒型電池の外径とほぼ等しい
かわずかに小さい外径を有する請求項１，３〜５のいず
れかに記載の電池接続構造体。6. The connection member of the first inter-battery connection portion,
The battery connection structure according to claim 1, wherein the annular flat portion has an outer diameter substantially equal to or slightly smaller than an outer diameter of the cylindrical battery.
前記平面状の第１の接続部の平面部および／または前記
第２の接続部の凹部もしくは段差をもって形成された平
面部に、プロジェクション溶接用の突起が形成されてい
る請求項２または３に記載の電池接続構造体。7. The connecting member of the second inter-battery connecting portion,
4. The projection for projection welding is formed on a flat portion of the flat first connection portion and / or a flat portion formed with a recess or a step of the second connection portion. 5. Battery connection structure.
れる接続部材の、前記平面状の第１の接続部の平面部お
よび／または前記第２の接続部の凹部もしくは段差をも
って形成された平面部には、溶接時に発生する無効電流
低減用の切欠き穴が形成されている請求項２，３または
７に記載の電池接続構造体。8. A connecting member used in the second inter-battery connecting portion, the connecting member being formed with a flat portion of the flat first connecting portion and / or a concave portion or a step of the second connecting portion. 8. The battery connection structure according to claim 2, wherein a cutout hole for reducing reactive current generated during welding is formed in the flat portion.
れる接続部材の、前記第１と第２の接続部を連結する中
間部に、前記電池の並置方向に対し垂直方向に微少な幅
の切欠きが少なくとも１個形成されている請求項２，
３，７，８のいずれかに記載の電池接続構造体。9. A minute width in a direction perpendicular to the juxtaposition direction of the batteries at an intermediate portion of the connection member used in the second inter-battery connection portion, which connects the first and second connection portions. 2. The at least one notch is formed.
9. The battery connection structure according to any one of 3, 7, and 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001045181A JP2002246005A (en) | 2001-02-21 | 2001-02-21 | Battery connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001045181A JP2002246005A (en) | 2001-02-21 | 2001-02-21 | Battery connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002246005A true JP2002246005A (en) | 2002-08-30 |
Family
ID=18907026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001045181A Pending JP2002246005A (en) | 2001-02-21 | 2001-02-21 | Battery connection structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002246005A (en) |
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| JP2004111308A (en) * | 2002-09-20 | 2004-04-08 | Matsushita Electric Ind Co Ltd | Sealed type rechargeable battery and battery module |
| JP2006210562A (en) * | 2005-01-27 | 2006-08-10 | Matsushita Electric Ind Co Ltd | Capacitor |
| WO2006112251A1 (en) * | 2005-04-14 | 2006-10-26 | Matsushita Electric Industrial Co., Ltd. | Production method for electric device assembly and electric device assembly |
| WO2010044588A3 (en) * | 2008-10-14 | 2010-07-29 | 주식회사 엘지화학 | Electrode terminal connection member for producing a core pack |
| CN101964408A (en) * | 2009-07-22 | 2011-02-02 | 三洋电机株式会社 | Battery pack |
| KR101101151B1 (en) | 2007-07-04 | 2012-01-05 | 주식회사 엘지화학 | Anode Connecting Member for Secondary Battery |
| KR101108445B1 (en) | 2007-07-04 | 2012-01-31 | 주식회사 엘지화학 | Method of Mechanical Connection of Secondary Battery and Connecting Member therefore |
| JP2012074155A (en) * | 2010-09-27 | 2012-04-12 | Panasonic Eco Solutions Power Tools Co Ltd | Battery pack and electric powered tool using the same |
| KR101151847B1 (en) * | 2010-08-19 | 2012-06-01 | 엘에스엠트론 주식회사 | Terminal connecting device for electric energy storage device module |
| JP2013089489A (en) * | 2011-10-19 | 2013-05-13 | Yazaki Corp | Power supply device |
| KR101292276B1 (en) | 2011-12-07 | 2013-08-01 | 엘에스엠트론 주식회사 | Terminal connecting device for electric energy storage device module |
| EP2784793A1 (en) * | 2011-11-22 | 2014-10-01 | Nippon Chemi-Con Corporation | Capacitor device |
| US8871375B2 (en) | 2010-06-17 | 2014-10-28 | Samsung Sdi Co., Ltd. | Coupling member between battery cells and battery cell assembly using the same |
| DE102018000258A1 (en) * | 2018-01-13 | 2019-07-18 | Diehl Metal Applications Gmbh | Cell connector for the electrical connection of cell terminals of an energy storage device |
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| JP2004111308A (en) * | 2002-09-20 | 2004-04-08 | Matsushita Electric Ind Co Ltd | Sealed type rechargeable battery and battery module |
| JP2006210562A (en) * | 2005-01-27 | 2006-08-10 | Matsushita Electric Ind Co Ltd | Capacitor |
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| KR101101151B1 (en) | 2007-07-04 | 2012-01-05 | 주식회사 엘지화학 | Anode Connecting Member for Secondary Battery |
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| WO2010044588A3 (en) * | 2008-10-14 | 2010-07-29 | 주식회사 엘지화학 | Electrode terminal connection member for producing a core pack |
| US10090503B2 (en) | 2008-10-14 | 2018-10-02 | Lg Chem, Ltd. | Connecting member of electrode terminals for preparation of core pack |
| JP2011028871A (en) * | 2009-07-22 | 2011-02-10 | Sanyo Electric Co Ltd | Pack battery |
| CN101964408A (en) * | 2009-07-22 | 2011-02-02 | 三洋电机株式会社 | Battery pack |
| US8871375B2 (en) | 2010-06-17 | 2014-10-28 | Samsung Sdi Co., Ltd. | Coupling member between battery cells and battery cell assembly using the same |
| KR101151847B1 (en) * | 2010-08-19 | 2012-06-01 | 엘에스엠트론 주식회사 | Terminal connecting device for electric energy storage device module |
| JP2012074155A (en) * | 2010-09-27 | 2012-04-12 | Panasonic Eco Solutions Power Tools Co Ltd | Battery pack and electric powered tool using the same |
| JP2013089489A (en) * | 2011-10-19 | 2013-05-13 | Yazaki Corp | Power supply device |
| EP2784793A1 (en) * | 2011-11-22 | 2014-10-01 | Nippon Chemi-Con Corporation | Capacitor device |
| EP2784793A4 (en) * | 2011-11-22 | 2015-10-07 | Nippon Chemicon | Capacitor device |
| KR101292276B1 (en) | 2011-12-07 | 2013-08-01 | 엘에스엠트론 주식회사 | Terminal connecting device for electric energy storage device module |
| DE102018000258A1 (en) * | 2018-01-13 | 2019-07-18 | Diehl Metal Applications Gmbh | Cell connector for the electrical connection of cell terminals of an energy storage device |
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