JP2013093160A5 - - Google Patents
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- JP2013093160A5 JP2013093160A5 JP2011233754A JP2011233754A JP2013093160A5 JP 2013093160 A5 JP2013093160 A5 JP 2013093160A5 JP 2011233754 A JP2011233754 A JP 2011233754A JP 2011233754 A JP2011233754 A JP 2011233754A JP 2013093160 A5 JP2013093160 A5 JP 2013093160A5
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Description
請求項１に係る発明は、正極電極および負極電極をセパレータを介在させて捲回した捲回電極群と、捲回電極群を収容する電池缶と、電池缶を封止する電池蓋と、電池蓋に設けられた一対の貫通孔のそれぞれに取り付けられた正極端子および負極端子と、正極端子および負極端子のそれぞれと貫通孔との間に介在されて、正極端子および負極端子のそれぞれと電池蓋とを絶縁する絶縁シール部材と、正極電極に接続される電極接続部と、正極端子に固着される端子接続部とを有する正極集電体と、負極電極に接続される電極接続部と、負極端子に固着される端子接続部とを有する負極集電体と、正負極集電体の端子接続部のそれぞれと電池蓋との間に介在されて、正負極集電体のそれぞれと電池蓋とを絶縁する絶縁部材とを備え、電池蓋は、電池缶の内側に向かって突出する凸部を有し、絶縁部材は、正負極集電体の端子接続部が嵌合される第１凹部と、電池蓋の凸部が嵌合される第２凹部とを有し、正負極端子を中心とした回転力が正負極端子に作用すると、絶縁部材の第１凹部の側面が正負極端子に固着された端子接続部の側面を介して正負極端子からの回転力を受け、電池蓋の凸部の側面が絶縁部材の第２凹部の側面を介して絶縁部材からの回転力を受けることで、正負極端子の電池蓋に対する回転が防止されることを特徴とする二次電池である。
請求項２に係る発明は、請求項１に記載の二次電池において、電池缶と電池蓋とから構成される電池容器は、一対の幅広面と一対の幅狭面とを有する角形形状とされ、端子接続部は、矩形平板状であって、電池缶の幅狭面に平行に配置される内側側面と外側側面とを有し、電池蓋の内面に沿って配置され、絶縁部材の第１凹部は、端子接続部の内側側面に係合する内側係合面および端子接続部の外側側面に係合する外側係合面を有していることを特徴とする。
請求項３に係る発明は、請求項２に記載の二次電池において、端子接続部には、内側側面から電池缶の中心側に向かって突出する補助係合部がさらに設けられ、絶縁部材の第１凹部には、補助係合部の側面に係合する補助係合面がさらに設けられていることを特徴とする。
請求項４に係る発明は、請求項１ないし３のいずれか１項に記載の二次電池において、絶縁部材には、捲回電極群に当接される面を有する位置規制部が設けられ、絶縁部材の第２凹部は、位置規制部に対応して設けられていることを特徴とする。
The invention according to claim 1 is a wound electrode group in which a positive electrode and a negative electrode are wound with a separator interposed therebetween, a battery can that houses the wound electrode group, a battery lid that seals the battery can, and a battery A positive electrode terminal and a negative electrode terminal attached to each of a pair of through holes provided in the lid; A positive electrode current collector having an insulating seal member that insulates the electrode, an electrode connection portion connected to the positive electrode, a terminal connection portion fixed to the positive electrode terminal, an electrode connection portion connected to the negative electrode, and a negative electrode A negative electrode current collector having a terminal connection portion fixed to the terminal; and each of the positive electrode and negative electrode current collector terminals interposed between the battery cover and each of the positive and negative electrode current collectors; the an insulating member for insulating, conductive Ikefuta is The insulating member has a convex portion protruding toward the inside of the pond can, and the insulating member has a first concave portion into which the terminal connecting portion of the positive and negative electrode current collector is fitted, and a second concave portion into which the convex portion of the battery lid is fitted. And when the rotational force about the positive and negative electrode terminals acts on the positive and negative electrode terminals, the side surfaces of the first concave portion of the insulating member are connected to the positive and negative electrode terminals via the side surfaces of the terminal connecting portion fixed to the positive and negative electrode terminals. The rotation of the positive and negative terminals with respect to the battery lid is prevented by receiving the rotational force from the insulating member and the side surface of the convex portion of the battery lid receiving the rotational force from the insulating member via the side surface of the second concave portion of the insulating member. Is a secondary battery characterized by
According to a second aspect of the present invention, in the secondary battery according to the first aspect, the battery container including the battery can and the battery lid has a rectangular shape having a pair of wide surfaces and a pair of narrow surfaces. The terminal connecting portion has a rectangular flat plate shape, and has an inner side surface and an outer side surface that are arranged in parallel to the narrow surface of the battery can, and is arranged along the inner surface of the battery lid . The recess has an inner engagement surface that engages with the inner side surface of the terminal connection portion and an outer engagement surface that engages with the outer side surface of the terminal connection portion.
According to a third aspect of the present invention, in the secondary battery according to the second aspect, the terminal connection portion is further provided with an auxiliary engagement portion protruding from the inner side surface toward the center side of the battery can, The first recess is further provided with an auxiliary engagement surface that engages with a side surface of the auxiliary engagement portion.
According to a fourth aspect of the present invention, in the secondary battery according to any one of the first to third aspects, the insulating member is provided with a position restricting portion having a surface in contact with the wound electrode group, The second recess of the insulating member is provided corresponding to the position restricting portion.
本発明によれば、二次電池に作用する振動や衝撃に起因して正負極端子が回転することを防止できる。 According to the present invention, it is possible to prevent the positive and negative electrode terminals from rotating due to vibration or impact acting on the secondary battery.
Claims (4)
前記捲回電極群を収容する電池缶と、
前記電池缶を封止する電池蓋と、
前記電池蓋に設けられた一対の貫通孔のそれぞれに取り付けられた正極端子および負極端子と、
前記正極端子および前記負極端子のそれぞれと前記貫通孔との間に介在されて、前記正極端子および前記負極端子のそれぞれと前記電池蓋とを絶縁する絶縁シール部材と、
前記正極電極に接続される電極接続部と、前記正極端子に固着される端子接続部とを有する正極集電体と、
前記負極電極に接続される電極接続部と、前記負極端子に固着される端子接続部とを有する負極集電体と、
前記正負極集電体の端子接続部のそれぞれと前記電池蓋との間に介在されて、前記正負極集電体のそれぞれと前記電池蓋とを絶縁する絶縁部材とを備え、
前記電池蓋は、前記電池缶の内側に向かって突出する凸部を有し、
前記絶縁部材は、前記正負極集電体の端子接続部が嵌合される第１凹部と、前記電池蓋の凸部が嵌合される第２凹部とを有し、
前記正負極端子を中心とした回転力が前記正負極端子に作用すると、前記絶縁部材の第１凹部の側面が前記正負極端子に固着された端子接続部の側面を介して前記正負極端子からの回転力を受け、前記電池蓋の凸部の側面が前記絶縁部材の第２凹部の側面を介して前記絶縁部材からの回転力を受けることで、前記正負極端子の前記電池蓋に対する回転が防止されることを特徴とする二次電池。 A wound electrode group in which a positive electrode and a negative electrode are wound with a separator interposed therebetween;
A battery can containing the wound electrode group;
A battery lid for sealing the battery can;
A positive terminal and a negative terminal attached to each of the pair of through holes provided in the battery lid;
An insulating seal member interposed between each of the positive electrode terminal and the negative electrode terminal and the through-hole to insulate each of the positive electrode terminal and the negative electrode terminal and the battery lid;
A positive electrode current collector having an electrode connection portion connected to the positive electrode and a terminal connection portion fixed to the positive electrode terminal;
A negative electrode current collector having an electrode connection part connected to the negative electrode and a terminal connection part fixed to the negative electrode terminal;
An insulating member interposed between each of the terminal connection portions of the positive and negative electrode current collectors and the battery lid, and insulating each of the positive and negative electrode current collectors and the battery lid;
Before SL battery lid has a protrusion protruding toward the inside of the battery can,
The insulating member has a first recess in which a terminal connection portion of the positive and negative electrode current collector is fitted, and a second recess in which a convex portion of the battery lid is fitted,
When a rotational force about the positive / negative terminal is applied to the positive / negative terminal, the side surface of the first recess of the insulating member is separated from the positive / negative terminal via the side surface of the terminal connection portion fixed to the positive / negative terminal. And the side surface of the convex portion of the battery lid receives the rotational force from the insulating member via the side surface of the second concave portion of the insulating member, whereby the positive and negative electrode terminals rotate relative to the battery lid. A secondary battery characterized by being prevented.
前記電池缶と前記電池蓋とから構成される電池容器は、一対の幅広面と一対の幅狭面とを有する角形形状とされ、
前記端子接続部は、矩形平板状であって、前記電池缶の幅狭面に平行に配置される内側側面と外側側面とを有し、前記電池蓋の内面に沿って配置され、
前記絶縁部材の第１凹部は、前記端子接続部の内側側面に係合する内側係合面および前記端子接続部の外側側面に係合する外側係合面を有していることを特徴とする二次電池。 The secondary battery according to claim 1,
The battery container composed of the battery can and the battery lid has a rectangular shape having a pair of wide surfaces and a pair of narrow surfaces,
The terminal connection portion has a rectangular flat plate shape, and has an inner side surface and an outer side surface arranged in parallel to the narrow surface of the battery can, and is arranged along the inner surface of the battery lid,
The first recess of the insulating member has an inner engagement surface that engages with an inner side surface of the terminal connection portion and an outer engagement surface that engages with an outer side surface of the terminal connection portion. Secondary battery.
前記端子接続部には、前記内側側面から前記電池缶の中心側に向かって突出する補助係合部がさらに設けられ、
前記絶縁部材の第１凹部には、前記補助係合部の側面に係合する補助係合面がさらに設けられていることを特徴とする二次電池。 The secondary battery according to claim 2,
The terminal connection portion is further provided with an auxiliary engagement portion that protrudes from the inner side surface toward the center side of the battery can,
The secondary battery according to claim 1 , wherein an auxiliary engagement surface that is engaged with a side surface of the auxiliary engagement portion is further provided in the first recess of the insulating member.
前記絶縁部材には、前記捲回電極群に当接される面を有する位置規制部が設けられ、
前記絶縁部材の第２凹部は、前記位置規制部に対応して設けられていることを特徴とする二次電池。 The secondary battery according to any one of claims 1 to 3,
The insulating member is provided with a position restricting portion having a surface in contact with the wound electrode group,
The secondary battery, wherein the second concave portion of the insulating member is provided corresponding to the position restricting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011233754A JP5795937B2 (en) | 2011-10-25 | 2011-10-25 | Secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011233754A JP5795937B2 (en) | 2011-10-25 | 2011-10-25 | Secondary battery |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2013093160A JP2013093160A (en) | 2013-05-16 |
| JP2013093160A5 true JP2013093160A5 (en) | 2014-10-23 |
| JP5795937B2 JP5795937B2 (en) | 2015-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011233754A Expired - Fee Related JP5795937B2 (en) | 2011-10-25 | 2011-10-25 | Secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5795937B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105144424B (en) * | 2013-04-24 | 2017-06-09 | 丰田自动车株式会社 | Enclosed-type battery |
| JP6167185B2 (en) * | 2013-12-17 | 2017-07-19 | 日立オートモティブシステムズ株式会社 | Prismatic secondary battery |
| JP6631866B2 (en) | 2015-01-09 | 2020-01-15 | 株式会社Ｇｓユアサ | Power storage device |
| KR101733745B1 (en) | 2015-04-07 | 2017-05-08 | 삼성에스디아이 주식회사 | Rechargeable battery |
| JP6780419B2 (en) * | 2016-09-30 | 2020-11-04 | 株式会社Ｇｓユアサ | Power storage element |
| JP6697685B2 (en) * | 2017-02-06 | 2020-05-27 | トヨタ自動車株式会社 | Sealed batteries and assembled batteries |
| JP6859852B2 (en) * | 2017-05-31 | 2021-04-14 | 三洋電機株式会社 | Square secondary batteries, assembled batteries and vehicles using them |
| JP7161676B2 (en) * | 2018-12-13 | 2022-10-27 | トヨタ自動車株式会社 | battery |
| EP4040552A4 (en) * | 2019-09-30 | 2024-08-07 | Murata Manufacturing Co | Secondary cell |
| JPWO2021200737A1 (en) * | 2020-03-31 | 2021-10-07 | ||
| JP7402144B2 (en) * | 2020-11-05 | 2023-12-20 | プライムプラネットエナジー＆ソリューションズ株式会社 | Batteries and their manufacturing methods |
| CN215578778U (en) * | 2021-05-21 | 2022-01-18 | 湖北亿纬动力有限公司 | Cylindrical battery with novel structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101023105B1 (en) * | 2009-03-11 | 2011-03-24 | 에스비리모티브 주식회사 | Rechargable battery |
| JP2011049064A (en) * | 2009-08-27 | 2011-03-10 | Toshiba Corp | Battery |
| JP5651557B2 (en) * | 2011-08-02 | 2015-01-14 | 日立オートモティブシステムズ株式会社 | Single cells and batteries |
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2011
- 2011-10-25 JP JP2011233754A patent/JP5795937B2/en not_active Expired - Fee Related
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