JP2007066856A - Electrode-connecting structure for storage capacitor cell - Google Patents

Electrode-connecting structure for storage capacitor cell Download PDF

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JP2007066856A
JP2007066856A JP2005255252A JP2005255252A JP2007066856A JP 2007066856 A JP2007066856 A JP 2007066856A JP 2005255252 A JP2005255252 A JP 2005255252A JP 2005255252 A JP2005255252 A JP 2005255252A JP 2007066856 A JP2007066856 A JP 2007066856A
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electrode
rotating body
tab
frame body
power storage
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Akihiro Nabeshima
聡宏 鍋島
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Subaru Corp
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Fuji Heavy Industries Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrode-connecting structure that allows easy connection of an electrode terminal, when a storage capacitor cell is packaged, and that has a high degree of flexibility with respect to connection changes. <P>SOLUTION: When a tab 4 is inserted between the perimeter of a rotating body 15 and an inner surface of a terminal frame body 10 and fastened by rotating a nut 20, a support shaft 16 and the rotating body 15 rotate with the rotation of the nut 20, so that a corner portion at the perimeter of the rotating body 15 presses the tab 4 against the inner surface of the terminal frame body 10. Then, in response to the pressing of the tab 4, a reaction force is applied to the tab 4 from the inner surface of the terminal frame body 10, and the tab 4 is thus sandwiched between the terminal frame body 10 and the rotating body 15 and is fixed, to thereby establish electrical connection. The electrode connecting structure that allows easy connection of the electrode terminal and that has a high degree of flexibility to connection changes can be provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、外装材によって蓄電要素を封止した平面状の蓄電体セルから延出される薄片状の電極端子を接続する蓄電体セルの電極接続構造に関する。   The present invention relates to an electrode connection structure of a power storage cell that connects thin electrode terminals extended from a planar power storage cell in which a power storage element is sealed with an exterior material.

近年、リチウムイオン二次電池や電気二重層コンデンサ等の略平面矩形状をなす扁平な蓄電体セルが実用化され、エネルギー密度の高さ、コンパクト化等から、各種機器の電力源として有望視されている。   In recent years, flat battery cells with a substantially flat rectangular shape, such as lithium ion secondary batteries and electric double layer capacitors, have been put into practical use, and are expected to be promising as power sources for various devices due to their high energy density and compactness. ing.

この種の扁平な蓄電体セルは、内部電極及び電解質層の積層体を、例えばアルミニウム系の金属層の表面を樹脂層によって絶縁コーティングしたシート状のラミネートフィルムによって密閉・封止したものであり、この封止部分から金属の薄片状の電極端子（タブ）が延出されている。   This type of flat battery cell is a laminate of internal electrodes and electrolyte layers sealed and sealed with, for example, a sheet-like laminate film in which the surface of an aluminum-based metal layer is insulated with a resin layer, A metal flaky electrode terminal (tab) is extended from the sealed portion.

このような蓄電体セルを、セル単体或いは複数のセルを集合した組電池としてパッケージ化する場合には、薄片状の電極端子を確実に接続する必要があり、例えば、特許文献１には、複数の電池を積層してモジュール電池とする場合に、電池の電極タブを折り曲げて略Ｌ字状とし、積層方向に隣接する電池の、折り曲げ部同士の少なくとも一部を重ね合わせて接続する技術が開示されている。
特開２００４−６３３４７号公報 When such a power storage cell is packaged as a single cell or an assembled battery in which a plurality of cells are assembled, it is necessary to securely connect the flaky electrode terminals. When a battery is stacked to form a module battery, a technique is disclosed in which the battery electrode tabs are bent into a substantially L shape, and at least a part of the bent portions of the batteries adjacent in the stacking direction are overlapped and connected. Has been.
JP 2004-63347 A

しかしながら、従来、複数の蓄電体セルを接続するには、特許文献１に開示されているように、互いの電極端子をスポット溶接したり、バスバー等の端子部材を溶接するのが一般的であり、作業工程が面倒であるばかりでなく、一旦、接続を完了すると、接続の変更が困難となる等、制約が多いという問題がある。   However, conventionally, in order to connect a plurality of power storage cells, as disclosed in Patent Document 1, it is common to spot weld each other's electrode terminals or to weld terminal members such as bus bars. Not only is the work process cumbersome, but once the connection is completed, there is a problem that it is difficult to change the connection and there are many restrictions.

本発明は上記事情に鑑みてなされたもので、蓄電体セルをパッケージ化する際に容易に電極端子を接続することができ、且つ接続変更に対しても自由度の高い蓄電体セルの電極接続構造を提供することを目的としている。   The present invention has been made in view of the above circumstances, and it is possible to easily connect electrode terminals when packaging a power storage cell, and to connect the electrode of a power storage cell with a high degree of freedom in connection change. Its purpose is to provide a structure.

上記目的を達成するため、本発明による蓄電体セルの電極接続構造は、外装材によって蓄電要素を封止した平面状の蓄電体セルから延出される薄片状の電極端子を接続する蓄電体セルの電極接続構造であって、上記電極端子が挿入されて内壁面に上記電極端子が接触する枠体と、上記枠体内に回転自在に配設され、上記電極端子が接触される回転外周面と上記枠体の上記電極端子が接触する内壁面との間の間隙が回転に伴って増減する回転体と、上記回転体を上記枠体内に支持して上記回転体と一体回転し、上記枠体から突出する一端に螺子が螺設された軸部材と、上記軸部材の一端に螺合されて上記枠体に締結される螺子部材とを備えたことを特徴とする。   In order to achieve the above object, an electrode connection structure of a power storage cell according to the present invention is a power storage cell that connects thin electrode terminals extending from a planar power storage cell in which a power storage element is sealed with an exterior material. An electrode connection structure, in which the electrode terminal is inserted and the electrode terminal is in contact with an inner wall surface, a rotating outer surface that is rotatably disposed in the frame and is in contact with the electrode terminal, and the above A rotating body in which a gap between the electrode terminals of the frame body and the inner wall surface is increased or decreased with rotation, and the rotating body is supported by the frame body so as to rotate integrally with the rotating body. A shaft member in which a screw is screwed at one end protruding, and a screw member screwed to one end of the shaft member and fastened to the frame body are provided.

本発明による蓄電体セルの電極接続構造は、蓄電体セルをパッケージ化する際に容易に電極端子を接続することができ、且つ接続変更に対しても自由度高く対処することが可能となる。   The electrode connection structure for a power storage cell according to the present invention can easily connect electrode terminals when packaging the power storage cell, and can cope with a change in connection with a high degree of freedom.

以下、図面を参照して本発明の実施の形態を説明する。図１〜図６は本発明の実施の一形態に係わり、図１は蓄電体セルの電極接続構造を示す説明図、図２は電極接続器を示す説明図、図３はナットの締め付けを示す説明図、図４は電気的接続が確保された状態を示す説明図、図５はセルケースの斜視図、図６はセルケースを直列接続した状態を示す説明図である。   Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 relate to an embodiment of the present invention, FIG. 1 is an explanatory view showing an electrode connection structure of a battery cell, FIG. 2 is an explanatory view showing an electrode connector, and FIG. 3 is a nut tightening. FIG. 4 is an explanatory view showing a state in which electrical connection is ensured, FIG. 5 is a perspective view of the cell case, and FIG. 6 is an explanatory view showing a state in which the cell cases are connected in series.

図１において、符号１は、リチウムイオン二次電池や電気二重層キャパシタ等の略平面矩形状をなす扁平な蓄電体セルであり、電圧仕様や容量仕様等に応じて所定セル数を接続してパッケージ化し、各種の電源装置、例えば、電気自動車（ＥＶ）やハイブリッド自動車（ＨＥＶ）等の電源装置等に用いられる。この蓄電体セル１は、平面ラミネート型リチウムイオン二次電池に代表されるように、内部電極及び電解質層の積層体を、例えばアルミニウム系の金属層の表面を樹脂層によって絶縁コーティングしたシート状のラミネートフィルムによって密閉・封止している。   In FIG. 1, reference numeral 1 denotes a flat battery cell having a substantially flat rectangular shape such as a lithium ion secondary battery or an electric double layer capacitor, and a predetermined number of cells are connected in accordance with voltage specifications and capacity specifications. It is packaged and used in various power supply devices, for example, power supply devices such as electric vehicles (EV) and hybrid vehicles (HEV). As represented by a flat laminate type lithium ion secondary battery, the battery cell 1 is a sheet-like laminate in which an inner electrode and an electrolyte layer are laminated with, for example, an aluminum metal layer surface with a resin layer. Sealed and sealed with a laminate film.

蓄電体セル１の外観構成としては、電解質層及び電極の積層体からなる蓄電要素をラミネートフィルムからなる外装材で包込んで矩形状に形成された蓄電部２、蓄電部２の周囲に外装材をシート状に延設した封止部３、封止部３の両端から露呈される２つの金属製の正，負の電極端子としてのタブ４，４が備えられている。蓄電部２は蓄電体１全体の厚さを規定する最も肉厚な部分であり、タブ４，４は封止部３よりも更に薄く、金属の薄片で形成されている。   As an external configuration of the power storage cell 1, a power storage unit 2 formed in a rectangular shape by enclosing a power storage element made of a laminate of an electrolyte layer and an electrode with a packaging material made of a laminate film, and a packaging material around the power storage unit 2 And a tab 4, 4 as two metal positive and negative electrode terminals exposed from both ends of the sealing portion 3. The power storage unit 2 is the thickest part that defines the overall thickness of the power storage unit 1, and the tabs 4 and 4 are thinner than the sealing unit 3 and are formed of metal flakes.

以上の蓄電体セル１は、柔軟且つ可撓性を有するセル構造であるため、取扱い上及び保護の観点から、セル単体で或は複数個のセルを積層して所定のケースに収納され、電極接続構造を介してバスバー等の外部端子に接続される。この電極接続構造は、タブ４が挿入される細長の略箱形の端子枠体１０と、端子枠体１０内に回転自在に支持される回転体１５と、回転体１５を支持する軸部材としての支持軸１６と、支持軸１６の一端に螺合されて端子枠体１０の端面に締結される螺子部材としてのナット２０とを主として構成される電極接続器３０によって実現される。   Since the power storage cell 1 has a soft and flexible cell structure, from the viewpoint of handling and protection, the cell alone or a plurality of cells are stacked and stored in a predetermined case, and the electrode It is connected to an external terminal such as a bus bar through a connection structure. This electrode connection structure includes an elongated substantially box-shaped terminal frame 10 into which the tab 4 is inserted, a rotating body 15 that is rotatably supported in the terminal frame 10, and a shaft member that supports the rotating body 15. This is realized by an electrode connector 30 mainly composed of a support shaft 16 and a nut 20 as a screw member screwed to one end of the support shaft 16 and fastened to an end surface of the terminal frame body 10.

本形態においては、電極接続器３０を構成する主要部材、すなわち、端子枠体１０、回転体１５、支持軸１６、ナット２０は、導電性の金属材料で形成されており、端子枠体１０の内面と回転体１５の外周との間にタブ４を挟み込んで機械的に圧接することにより、電気的な接続が確立される。   In this embodiment, the main members constituting the electrode connector 30, that is, the terminal frame body 10, the rotating body 15, the support shaft 16, and the nut 20 are formed of a conductive metal material. Electrical connection is established by sandwiching the tab 4 between the inner surface and the outer periphery of the rotating body 15 and mechanically pressing the tab 4.

詳細には、端子枠体１０は、略箱形形状の対向する２つの側面が開口され、対向する２つの側壁１１と両端の端面壁１２とによる枠体として形成されている。端子枠体１０の内部には、多角柱（図１においては、６角柱）の回転体１５が収納され、この回転体１５の両端から延出される支持軸１６が端子枠体１０の端面壁１２に開口された貫通孔から突出され、回転体１５が端子枠体１０に回転自在に支持されている。支持軸１６は、端子枠体１０の端面壁１２から突出する端部の一方に雄螺子が設けられてナット２０が螺合され、対向する端面壁１２から突出される他方が自由端とされる。   Specifically, the terminal frame body 10 is formed as a frame body having two opposing side walls 11 and end face walls 12 at both ends, with two substantially box-shaped opposing side surfaces opened. A polygonal column (hexagonal column in FIG. 1) rotating body 15 is accommodated inside the terminal frame 10, and support shafts 16 extending from both ends of the rotating body 15 are end wall 12 of the terminal frame 10. The rotating body 15 is supported by the terminal frame body 10 so as to be rotatable. The support shaft 16 is provided with a male screw at one of the end portions projecting from the end face wall 12 of the terminal frame body 10 and is screwed with the nut 20, and the other projecting from the facing end face wall 12 is a free end. .

尚、本形態においては、図２に示すように、回転体１５の両側には、ワッシャ１７が介装されており、支持軸１６の自由端側は、ボルト頭部形状のフランジ部として形成されている。フランジ部の座面は、端子枠体１０の端面壁１２に当接したとき、回転方向に円滑に摺動するように形成されている。   In this embodiment, as shown in FIG. 2, washers 17 are provided on both sides of the rotating body 15, and the free end side of the support shaft 16 is formed as a bolt head-shaped flange portion. ing. The seating surface of the flange portion is formed so as to slide smoothly in the rotational direction when abutting against the end face wall 12 of the terminal frame 10.

また、回転体１５は、支持軸１６と一体的に回転するように形成されており、回転体１５と支持軸１６とを同一部材で一体的に形成、或いは、回転体１５に支持軸１６を圧入、カシメ、溶接、キー、スプライン等によって結合することにより、回転体１５と支持軸１６とが一体的に回転するように構成される。前述したように、回転体１５は多角柱で形成されていることから、回転体１５が回転すると、回転体１５外周と端子枠体１０の側壁１１内面との間の隙間ｄが変化し、タブ４を挟み込むことができる。   The rotating body 15 is formed to rotate integrally with the support shaft 16, and the rotating body 15 and the support shaft 16 are formed integrally with the same member, or the support shaft 16 is attached to the rotating body 15. By connecting by press fitting, caulking, welding, key, spline or the like, the rotating body 15 and the support shaft 16 are configured to rotate integrally. As described above, since the rotating body 15 is formed of a polygonal column, when the rotating body 15 rotates, the gap d between the outer periphery of the rotating body 15 and the inner surface of the side wall 11 of the terminal frame body 10 changes, and the tab 4 can be inserted.

隙間ｄの最小値ｄmin及び最大値ｄmaxは、以下の（１）式に示すような関係で設定され、隙間ｄの最大値ｄmaxが接続対象の厚さｔより若干大きく、隙間ｄの最小値ｄminが接続対象の厚さｔより小さい値となるように、各部の材質や剛性等を考慮して最適に設定される。例えば、蓄電体セル１単体を接続する場合には、タブ４単独の厚さを接続対象の厚さｔとして適用し、複数の蓄電体セル１を接続する場合には、複数枚のタブ４の合計の厚さを、接続対象の厚さｔとして適用する。   The minimum value dmin and the maximum value dmax of the gap d are set according to the relationship shown in the following formula (1), and the maximum value dmax of the gap d is slightly larger than the thickness t of the connection target, and the minimum value dmin of the gap d Is set optimally in consideration of the material, rigidity, etc. of each part so that the value becomes smaller than the thickness t of the connection target. For example, when connecting a single battery cell 1, the thickness of the tab 4 alone is applied as the thickness t to be connected, and when connecting a plurality of battery cells 1, The total thickness is applied as the thickness t to be connected.

ｄmin＜ｔ＜ｄmax…（１）
以上の構成による電極接続器３０を用いて蓄電体セル１のタブ４を外部に接続する場合には、回転体１５の外周と端子枠体１０の側壁１１内面との間にタブ４を挿入し、ナット２０を締め付ける。本形態においては、図１及び図２に示すように、タブ４を回転体１５に回転方向に沿って巻き付けるように挿入する。すなわち、回転体１５の外周と端子枠体１０の一方の側壁１１内面との間にタブ４を挿入した後、タブ４を折り返し、対向する側壁１１内面と回転体１５の他の外周との間にタブ４の先端を挿入する。 dmin <t <dmax (1)
When the tab 4 of the battery cell 1 is connected to the outside using the electrode connector 30 having the above configuration, the tab 4 is inserted between the outer periphery of the rotating body 15 and the inner surface of the side wall 11 of the terminal frame body 10. Tighten the nut 20. In this embodiment, as shown in FIGS. 1 and 2, the tab 4 is inserted so as to be wound around the rotating body 15 along the rotation direction. That is, after the tab 4 is inserted between the outer periphery of the rotating body 15 and the inner surface of one side wall 11 of the terminal frame body 10, the tab 4 is folded back and between the inner surface of the opposing side wall 11 and the other outer periphery of the rotating body 15. Insert the tip of the tab 4 into.

そして、タブ４を回転体１５と側壁１１との間に挿入した状態で、ナット２０を回転させて締め付けると、回転方向に拘束されていない支持軸１６及び回転体１５がナット２０の回転によって連れ回り、図３に示すように、回転体１５外周の角部がタブ４を側壁１１内面に押圧する。そして、タブ４の側壁１１への押圧に対して側壁１１からタブ４に反力が加えられ、タブ４が側壁１１と回転体１５との間に挟み込まれて固定される。これにより、タブ４、端子枠体１０、回転体１５、支持軸１６、ナット２０の電気的な経路が確立され、タブ４を外部端子に接続することができる。   When the nut 20 is rotated and tightened in a state where the tab 4 is inserted between the rotating body 15 and the side wall 11, the support shaft 16 and the rotating body 15 that are not constrained in the rotation direction are moved by the rotation of the nut 20. As shown in FIG. 3, corners on the outer periphery of the rotating body 15 press the tab 4 against the inner surface of the side wall 11. Then, a reaction force is applied from the side wall 11 to the tab 4 against the pressing of the tab 4 against the side wall 11, and the tab 4 is sandwiched between the side wall 11 and the rotating body 15 and fixed. Thereby, the electrical path | route of the tab 4, the terminal frame 10, the rotary body 15, the support shaft 16, and the nut 20 is established, and the tab 4 can be connected to an external terminal.

この場合、回転体１５は、多角柱に限らず、楕円柱や支持軸１６に対して偏芯させた円柱等によるカムとして形成しても良く、ナット２０を回転させることにより、タブ４を側壁１１と回転体１５との間に挟み込んで固定し、タブ４の電気的な接続を行うことができる。このタブ４の電気的な接続に際しては、電極接続器３０を構成する主要部材の全てを導電性の材料で形成する必要はなく、タブ４に接触する端子枠体１０を導電性の材料で形成すれば、回転体１５、支持軸１６、ナット２０は非導電性の材料で形成しても良い。逆に、端子枠体１０を絶縁性の材料で形成し、回転体１５、支持軸１６、ナット２０を導電性の材料で形成しても良い。   In this case, the rotator 15 is not limited to a polygonal column, and may be formed as a cam with an elliptical column or a cylinder eccentric with respect to the support shaft 16. 11 and the rotating body 15 are sandwiched and fixed, and the tab 4 can be electrically connected. When the tab 4 is electrically connected, it is not necessary to form all the main members constituting the electrode connector 30 from a conductive material, and the terminal frame 10 that contacts the tab 4 is formed from a conductive material. In this case, the rotating body 15, the support shaft 16, and the nut 20 may be formed of a nonconductive material. Conversely, the terminal frame 10 may be formed of an insulating material, and the rotating body 15, the support shaft 16, and the nut 20 may be formed of a conductive material.

以上の電極接続構造は、蓄電体セル１を収納するケースに適用される。図５は、蓄電体セル１を単体で収納する単セル用のセルケース５０を示し、薄型の箱体からなるケース本体５１の両側に、電極接続器３０を収納する端子ケース５２が備えられている。尚、電極接続器３０の端子枠体１０を絶縁体で形成する場合には、ケース本体５１に、電極接続器３０を直接取り付けることも可能である。   The electrode connection structure described above is applied to a case that houses the battery cell 1. FIG. 5 shows a cell case 50 for a single cell for storing the power storage cell 1 as a single unit, and a terminal case 52 for storing the electrode connector 30 is provided on both sides of a case body 51 made of a thin box. Yes. When the terminal frame 10 of the electrode connector 30 is formed of an insulator, the electrode connector 30 can be directly attached to the case body 51.

セルケース５０は、蓄電体セル１を収納した状態で、端子ケース５２の端面から支持軸１６と、この支持軸１６に螺合されるナット２０が露呈されており、図６に示すように、端子板４０をナット２０を介して電極接続器３０の端面壁１２に共締めすることにより、蓄電体セル１のタブ４の接続と他のセルケース５０への接続とを同時に行うことができ、組付け作業性を向上することができる。図６は、４個のセルケース５０を直列接続する例を示しており、端子板４０を用いてケース間の正極と負極とを接続している。   The cell case 50 exposes the support shaft 16 and the nut 20 screwed to the support shaft 16 from the end surface of the terminal case 52 in a state in which the battery cell 1 is housed, as shown in FIG. By fastening the terminal plate 40 together with the end wall 12 of the electrode connector 30 via the nut 20, the connection of the tab 4 of the battery cell 1 and the connection to another cell case 50 can be performed simultaneously. Assembly workability can be improved. FIG. 6 shows an example in which four cell cases 50 are connected in series, and the terminal plate 40 is used to connect the positive electrode and the negative electrode between the cases.

以上のように、本実施の形態においては、ナット２０を回転させて締結するだけの簡単な操作で蓄電体セル１のタブ４を端子枠体１０の内面と回転体１５の外周との間に挟み込んで機械的に圧接し、電気的な接続を確立することができる。これにより、蓄電体セル１を単体或いは複数個ケースに収納してパッケージ化する上での生産性を向上させることができる。   As described above, in the present embodiment, the tab 4 of the battery cell 1 is placed between the inner surface of the terminal frame body 10 and the outer periphery of the rotating body 15 by a simple operation by simply rotating and fastening the nut 20. It can be sandwiched and mechanically pressed to establish an electrical connection. Thereby, the productivity in housing and storing the power storage cell 1 in a single case or a plurality of cases can be improved.

また、蓄電体セル１の電極端子を溶接する等して取り外しができなくなるといったことがなく、接続変更にも柔軟に対応することができ、より自由度の高い蓄電体パッケージを構築することができる。更には、タブ４を端子枠体１０の内面と回転体１５の外周との間に挟み込むことから、溶接による接続に比較して接触面積を大きくすることが可能であり、接触抵抗を小さくして確実な電気的性能を得ることができ、信頼性を向上することができる。   Moreover, the electrode terminal of the power storage cell 1 cannot be removed by welding or the like, the connection change can be flexibly handled, and a power storage package with a higher degree of freedom can be constructed. . Furthermore, since the tab 4 is sandwiched between the inner surface of the terminal frame 10 and the outer periphery of the rotating body 15, the contact area can be increased as compared with the connection by welding, and the contact resistance is reduced. Reliable electrical performance can be obtained and reliability can be improved.

蓄電体セルの電極接続構造を示す説明図Explanatory drawing which shows the electrode connection structure of an electrical storage body cell 電極接続器を示す説明図Explanatory drawing showing the electrode connector ナットの締め付けを示す説明図Explanatory drawing showing tightening of nut 電気的接続が確保された状態を示す説明図Explanatory drawing showing a state where electrical connection is secured セルケースの斜視図Perspective view of cell case セルケースを直列接続した状態を示す説明図Explanatory drawing which shows the state which connected the cell case in series

符号の説明Explanation of symbols

１ 蓄電体セル
２ 蓄電部
３ 封止部
４ タブ
１０ 端子枠体
１１ 側壁
１５ 回転体
１６ 支持軸
２０ ナット
３０ 電極接続器 DESCRIPTION OF SYMBOLS 1 Power storage cell 2 Power storage part 3 Sealing part 4 Tab 10 Terminal frame 11 Side wall 15 Rotating body 16 Support shaft 20 Nut 30 Electrode connector

Claims (3)

外装材によって蓄電要素を封止した平面状の蓄電体セルから延出される薄片状の電極端子を接続する蓄電体セルの電極接続構造であって、
上記電極端子が挿入されて内壁面に上記電極端子が接触する枠体と、
上記枠体内に回転自在に配設され、上記電極端子が接触される回転外周面と上記枠体の上記電極端子が接触する内壁面との間の間隙が回転に伴って増減する回転体と、
上記回転体を上記枠体内に支持して上記回転体と一体回転し、上記枠体から突出する一端に螺子が螺設された軸部材と、
上記軸部材の一端に螺合されて上記枠体に締結される螺子部材とを備えたことを特徴とする蓄電体セルの電極接続構造。 An electrode connection structure of a power storage cell that connects thin electrode terminals extending from a planar power storage cell in which a power storage element is sealed with an exterior material,
A frame body in which the electrode terminal is inserted and the electrode terminal contacts an inner wall surface;
A rotating body that is rotatably arranged in the frame body, and a gap between a rotating outer peripheral surface with which the electrode terminal is contacted and an inner wall surface with which the electrode terminal of the frame body is in contact with the rotation body;
A shaft member that supports the rotating body in the frame body, rotates integrally with the rotating body, and has a screw threaded at one end protruding from the frame body;
An electrode connection structure for a power storage cell, comprising: a screw member screwed to one end of the shaft member and fastened to the frame body. 上記回転体を多角形断面の部材で形成したことを特徴とする請求項１記載の蓄電体セルの電極接続構造。   2. The battery cell electrode connection structure according to claim 1, wherein the rotating body is formed of a member having a polygonal cross section. 上記回転体をカム形状の部材で形成したことを特徴とする請求項１記載の蓄電体セルの電極接続構造。   2. The battery cell electrode connection structure according to claim 1, wherein the rotating body is formed of a cam-shaped member.
JP2005255252A 2005-09-02 2005-09-02 Electrode-connecting structure for storage capacitor cell Pending JP2007066856A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011040297A1 (en) * 2009-10-02 2011-04-07 株式会社 村田製作所 Electric storage device assembly structure and electric storage device unit structure
DE102018200543A1 (en) * 2018-01-15 2019-07-18 Bayerische Motoren Werke Aktiengesellschaft Galvanic element, battery and method for producing a galvanic element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011040297A1 (en) * 2009-10-02 2011-04-07 株式会社 村田製作所 Electric storage device assembly structure and electric storage device unit structure
JPWO2011040297A1 (en) * 2009-10-02 2013-02-28 株式会社村田製作所 Storage device assembly structure and storage device unit structure
DE102018200543A1 (en) * 2018-01-15 2019-07-18 Bayerische Motoren Werke Aktiengesellschaft Galvanic element, battery and method for producing a galvanic element

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