JPH0636756A - Cylindrical battery - Google Patents
Cylindrical batteryInfo
- Publication number
- JPH0636756A JPH0636756A JP4188459A JP18845992A JPH0636756A JP H0636756 A JPH0636756 A JP H0636756A JP 4188459 A JP4188459 A JP 4188459A JP 18845992 A JP18845992 A JP 18845992A JP H0636756 A JPH0636756 A JP H0636756A
- Authority
- JP
- Japan
- Prior art keywords
- metal spring
- battery
- current collection
- collection section
- current collector
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、円筒形電池の特に集電
部の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cylindrical battery, particularly to a current collector.
【0002】[0002]
【従来の技術】従来、陽極板と陰極板との間にセパレー
ターを介して渦巻状に捲回することにより極板群が構成
されている円筒形電池では、短冊状の集電端子の一端を
極板に、他端を封口蓋に接続し導通を行なっていた。こ
の場合、集電端子と極板の接続部に電流がすべて集中す
るので、IR損失が大きく、高率放電出来ないという問
題があった。そこで特開昭60−72160号公報に見
られる様に集電端子と極板との接続点数を増やす提案が
なされている。2. Description of the Related Art Conventionally, in a cylindrical battery in which an electrode plate group is formed by spirally winding an anode plate and a cathode plate with a separator interposed therebetween, one end of a strip-shaped collector terminal is The other end of the electrode plate was connected to the sealing lid to conduct electricity. In this case, since all the current concentrates on the connection between the collector terminal and the electrode plate, there is a problem that IR loss is large and high rate discharge cannot be performed. Therefore, as disclosed in Japanese Patent Laid-Open No. 60-72160, a proposal has been made to increase the number of connection points between the collector terminal and the electrode plate.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、従来の
集電端子は極板と多点接続される集電部及び封口蓋と接
続されるリード部から構成されるが、封口蓋とリード部
との接続は封口蓋が封口される前になされる必要があ
り、リード部はある一定以上の長さを有していた。した
がって、6分率(10C)以上の高率放電の場合、リー
ド部のIR損失が大きくなるという問題があった。本発
明の目的は、上記IR損失を低減し高率放電に優れた円
筒形電池を提供することである。However, the conventional collector terminal is composed of a collector part connected to the electrode plate at multiple points and a lead part connected to the sealing lid. The connection had to be made before the sealing lid was sealed, and the lead part had a certain length or more. Therefore, in the case of high rate discharge of 6 fraction (10 C) or more, there is a problem that the IR loss of the lead portion becomes large. An object of the present invention is to provide a cylindrical battery that reduces the above IR loss and is excellent in high rate discharge.
【0004】[0004]
【課題を解決するための手段】本発明は、封口蓋によっ
て閉塞される電池缶内に陽極板と陰極板とがセパレータ
ーを介して渦巻状に捲回されてなる渦巻状電極が配置さ
れ、該渦巻状電極の封口蓋側に露出する芯材露出部に板
状の集電部が多点接続され、該集電部の片側からのびる
短冊状のリード部の先端部が封口蓋に接続され、集電体
が電池缶と接触するのを防ぐように絶縁体が配置されて
なる円筒形電池において、絶縁体は、貫通孔を有し、貫
通孔の内側に金属バネが配置され、金属バネは封口蓋と
集電部に当接して電気導通経路を形成していることを特
徴としている。According to the present invention, a spirally wound electrode is provided in which a positive electrode plate and a negative electrode plate are spirally wound via a separator in a battery can closed by a sealing lid. Multiple points of plate-shaped current collectors are connected to the exposed core material exposed on the lid side of the spiral electrode, and the tip ends of the strip-shaped lead parts extending from one side of the current collector are connected to the lid. In a cylindrical battery in which an insulator is arranged so as to prevent the collector from coming into contact with the battery can, the insulator has a through hole, a metal spring is arranged inside the through hole, and the metal spring is It is characterized in that an electric conduction path is formed by contacting the sealing lid and the current collector.
【0005】[0005]
【作用】本発明は上記構成であるので、封口蓋で電池缶
を封口した後に封口蓋と集電体の集電部とを金属バネを
介して接続、または接触するため電流を分岐することが
でき高率放電時にIR損失を低くすることができ放電特
性を向上することができる。請求項2では断面が平面で
あるため線材同志の接触が良好になり抵抗を下げる効果
が大きい。Since the present invention has the above-described structure, after the battery can is sealed with the sealing lid, the sealing lid and the current collecting portion of the current collector are connected or contact via the metal spring, so that the current can be branched. It is possible to reduce IR loss during high rate discharge and improve discharge characteristics. In the second aspect, since the cross section is flat, the contact between the wire rods is good, and the effect of lowering the resistance is great.
【0006】又、請求項3では円錐台状の部分が圧縮に
弾性を生むため電極群を押さえる効果がある。Further, in the third aspect, since the truncated cone-shaped portion produces elasticity in compression, it has an effect of pressing the electrode group.
【0007】[0007]
【実施例】本発明の実施例を図面により更に詳細に説明
する。 実施例1 図1,2,3に本発明に係わる金属バネを収容した密閉
形Ni−Cd電池の要部断面図を示す。図4,5,6に
図1,2,3で使用した金属バネの斜視図を示す。図4
はサラバネ、図5は断面形状が多角形の圧縮コイルバ
ネ、図6は断面形状が多角形でバネの圧縮方向に円錐台
状である圧縮コイルバネである。図7に従来の密閉形N
i−Cd電池の要部縦断面図を示す。図1、図2、図3
および図7の電池は円筒状の電池缶1の内部に渦巻状電
極2を収容し、電池缶1の開口部において封口蓋3がか
しめられて気密を保っている。集電体は一方の極板の長
側端がセパレーターより露出するように捲回された渦巻
状電極2の一端に多点接続又は接触されるための板状の
集電部4と封口蓋3に接続、又は接触するための集電部
4の片側から延びた短冊状のリード部5を有しており、
渦巻状電極2はあらかじめ集電部4と抵抗溶接により露
出した極板端面に接続され、リード部5と封口蓋3も同
様に抵抗溶接により接続される。また、絶縁体7は集電
部4を覆う屈曲部と封口蓋3の方向に伸びた環状凸部を
有しており、集電体4が電池缶1と接触するのを防いで
いる。また環状凸部の内側には貫通孔が設けられてお
り、図7の電池以外はその部分に金属バネ6が配置され
る。金属バネ6は、封口蓋3が電池缶1にかしめられる
際に封口蓋3の金属部分と集電部4に押圧され、それら
に強く接触している。したがって封口蓋3と集電部4の
導通経路を分岐できるようになる。また、金属バネ6を
介して集電部4に圧力がかかるので、渦巻状電極2が良
好に押圧されて振動などによる電極活物質の脱落が防止
される。金属バネ6の種類としては、サラバネ、断面形
状が多角形の圧縮コイルバネ、断面形状が多角形でバネ
の圧縮方向に円錐台状である圧縮コイルバネがある。常
法にしたがって焼結式ニッケル正極と焼結式カドミウム
負極を作成し、セパレーターを介して渦巻状に捲回して
極板群とした後、公称容量1200mAhのSC形電池を
組立た。図1の構造を有する電池をA、図2の構造を有
する電池をB、図3の構造を有する電池をCとした。ま
た、図7に示した従来構造の電池も合わせて作製した。
これら電池の充電後の内部抵抗を表1に示す。Embodiments of the present invention will be described in more detail with reference to the drawings. Example 1 FIGS. 1, 2 and 3 are sectional views of essential parts of a sealed Ni—Cd battery accommodating a metal spring according to the present invention. 4, 5 and 6 are perspective views of the metal springs used in FIGS. Figure 4
Is a flat spring, FIG. 5 is a compression coil spring having a polygonal cross section, and FIG. 6 is a compression coil spring having a polygonal cross section and a truncated cone shape in the compression direction of the spring. Fig. 7 shows the conventional closed type N
The principal part longitudinal cross-sectional view of an i-Cd battery is shown. 1, 2, and 3
In the battery shown in FIG. 7, the spiral electrode 2 is housed in the cylindrical battery can 1, and the sealing lid 3 is caulked at the opening of the battery can 1 to keep airtightness. The current collector is a plate-shaped current collector 4 and a sealing lid 3 for connecting or contacting one end of a spiral electrode 2 wound so that the long side end of one electrode plate is exposed from the separator. Has a strip-shaped lead portion 5 extending from one side of the current collector 4 for connecting to or contacting
The spiral electrode 2 is connected to the current collector 4 in advance to the end face of the electrode plate exposed by resistance welding, and the lead 5 and the sealing lid 3 are similarly connected by resistance welding. The insulator 7 has a bent portion that covers the current collector 4 and an annular protrusion that extends in the direction of the sealing lid 3, and prevents the current collector 4 from contacting the battery can 1. Further, a through hole is provided inside the annular convex portion, and the metal spring 6 is arranged in that portion except the battery shown in FIG. The metal spring 6 is pressed against the metal portion of the lid 3 and the current collector 4 when the lid 3 is caulked to the battery can 1, and is in strong contact with them. Therefore, the conduction path between the sealing lid 3 and the current collector 4 can be branched. Further, pressure is applied to the current collector 4 via the metal spring 6, so that the spiral electrode 2 is satisfactorily pressed and the electrode active material is prevented from falling off due to vibration or the like. Types of the metal spring 6 include a flat spring, a compression coil spring having a polygonal cross section, and a compression coil spring having a polygonal cross section and a truncated cone shape in the compression direction of the spring. A sintered nickel positive electrode and a sintered cadmium negative electrode were prepared according to a conventional method, spirally wound through a separator to form an electrode plate group, and then an SC battery having a nominal capacity of 1200 mAh was assembled. The battery having the structure of FIG. 1 was designated as A, the battery having the structure of FIG. 2 was designated as B, and the battery having the structure of FIG. 3 was designated as C. A battery having the conventional structure shown in FIG. 7 was also manufactured.
Table 1 shows the internal resistance of these batteries after charging.
【0008】[0008]
【表1】 [Table 1]
【0009】表1からわかるように本発明の電池A,
B,Cは、従来の電池に比べ0.5mΩ以上内部抵抗が
小さくなっている。本発明の電池Aと従来の電池を室温
下1.2Aで90分充電した後、20Aで放電したとき
の放電曲線を図8に示す。図8から明らかなように、本
発明の電池Aは、3分率の高率放電において電圧特性が
優れている。As can be seen from Table 1, the battery A of the present invention,
The internal resistance of B and C is smaller than that of the conventional battery by 0.5 mΩ or more. FIG. 8 shows discharge curves when the battery A of the present invention and the conventional battery were charged at 1.2 A for 90 minutes at room temperature and then discharged at 20 A. As is clear from FIG. 8, the battery A of the present invention has excellent voltage characteristics at a high rate discharge of 3 fractions.
【0010】[0010]
【発明の効果】上述したように、本発明によれば金属バ
ネによって封口蓋の金属部分と集電部が結ばれ、電流分
岐経路が形成でき、その結果IR損失が減少して高率放
電を良好に行なわせることができる。また、金属バネを
配置することにより振動などによる電極活物質の脱落が
防止できる。As described above, according to the present invention, the metal portion of the sealing lid and the current collecting portion are connected by the metal spring, and the current branching path can be formed. As a result, IR loss is reduced and high rate discharge can be achieved. It can be done well. Further, by disposing the metal spring, it is possible to prevent the electrode active material from falling off due to vibration or the like.
【図1】本発明に係わるサラバネを収容した密閉形Ni
−Cd電池の要部断面図である。FIG. 1 is a sealed Ni housing accommodating a flat spring according to the present invention.
It is a principal part sectional drawing of a -Cd battery.
【図2】本発明に係わる断面形状が多角形の圧縮コイル
バネを収容した密閉形Ni−Cd電池の要部断面図であ
る。FIG. 2 is a cross-sectional view of essential parts of a sealed Ni—Cd battery accommodating a compression coil spring having a polygonal cross section according to the present invention.
【図3】本発明に係わる断面形状が多角形でバネの圧縮
方向に円錐台状である圧縮コイルバネを収容した密閉形
Ni−Cd電池の要部断面図である。FIG. 3 is a cross-sectional view of a main part of a hermetically sealed Ni—Cd battery accommodating a compression coil spring having a polygonal cross section according to the present invention and having a truncated cone shape in the compression direction of the spring.
【図4】本発明に係わるサラバネの断面図である。FIG. 4 is a sectional view of a flat spring according to the present invention.
【図5】本発明に係わる断面形状が多角形の圧縮コイル
バネの断面図である。FIG. 5 is a sectional view of a compression coil spring having a polygonal sectional shape according to the present invention.
【図6】本発明に係わる断面形状が多角形でバネの圧縮
方向に円錐台状である圧縮コイルバネの断面図である。FIG. 6 is a cross-sectional view of a compression coil spring according to the present invention, which has a polygonal cross section and is frustoconical in the compression direction of the spring.
【図7】従来の密閉形電池の要部縦断面図である。FIG. 7 is a vertical sectional view of a main part of a conventional sealed battery.
【図8】本発明の電池と従来の電池の高率放電時の電池
電圧を示す関係図である。FIG. 8 is a relationship diagram showing the battery voltage during high rate discharge of the battery of the present invention and the conventional battery.
1は電池缶、2は渦巻状電極、3は封口蓋、4は集電
部、5はリード部、6は金属バネ、7は絶縁体1 is a battery can, 2 is a spiral electrode, 3 is a sealing lid, 4 is a current collecting part, 5 is a lead part, 6 is a metal spring, and 7 is an insulator.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 織田 光徳 東京都新宿区西新宿2丁目1番1号 新神 戸電機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsunori Oda 2-1-1, Nishishinjuku, Shinjuku-ku, Tokyo Shin-Kindo Electric Co., Ltd.
Claims (3)
板と陰極板とがセパレーターを介して渦巻状に捲回され
てなる渦巻状電極が配置され、前記渦巻状電極の前記封
口蓋側に露出する芯材露出部に板状の集電部が多点接続
され、該集電部の片側からのびる短冊状のリード部の先
端部が前記封口蓋に接続され、前記集電体が電池缶と接
触するのを防ぐように絶縁体が配置されてなる円筒形電
池において、前記絶縁体は、貫通孔を有し、該貫通孔の
内側に金属バネが配置され、前記金属バネは前記封口蓋
と前記集電部に当接して電気導通経路を形成しているこ
とを特徴とする円筒形電池。1. A spirally wound electrode formed by spirally winding an anode plate and a cathode plate with a separator interposed in a battery can closed by a sealing lid, the spiraling electrode side of the spirally wound electrode. A plate-shaped current collector is connected to the exposed core material at multiple points, the tip of a strip-shaped lead extending from one side of the current collector is connected to the lid, and the current collector is a battery. In a cylindrical battery having an insulator arranged to prevent contact with a can, the insulator has a through hole, and a metal spring is arranged inside the through hole, and the metal spring is the sealing member. A cylindrical battery, wherein the cover and the current collector are in contact with each other to form an electric conduction path.
断面形状が多角形であり且つ線材同志の接触面が平面で
ある請求項1記載の円筒形電池。2. The cylindrical battery according to claim 1, wherein the metal spring is a compression coil spring, the wire rod has a polygonal cross-sectional shape, and the contact surfaces of the wire rods are flat.
に円錐台状である請求項1記載の円筒形電池。3. The cylindrical battery according to claim 1, wherein a part or all of the metal spring has a truncated cone shape in the compression direction of the spring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4188459A JPH0636756A (en) | 1992-07-16 | 1992-07-16 | Cylindrical battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4188459A JPH0636756A (en) | 1992-07-16 | 1992-07-16 | Cylindrical battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0636756A true JPH0636756A (en) | 1994-02-10 |
Family
ID=16224081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4188459A Pending JPH0636756A (en) | 1992-07-16 | 1992-07-16 | Cylindrical battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0636756A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999005749A1 (en) * | 1997-07-25 | 1999-02-04 | Minnesota Mining And Manufacturing Company | Thermal conductor for high-energy electrochemical cells |
JP2007234486A (en) * | 2006-03-03 | 2007-09-13 | Gs Yuasa Corporation:Kk | Battery |
JP2008066302A (en) * | 2006-09-05 | 2008-03-21 | Saft Groupe Sa | Storage battery and its manufacturing method |
EP2159861A1 (en) * | 2008-09-02 | 2010-03-03 | M&G Eco-Battery Co., Ltd. | Secondary battery with a spirally-rolled electrode group |
JP2011014249A (en) * | 2009-06-30 | 2011-01-20 | Hitachi Vehicle Energy Ltd | Sealed battery |
US7998612B2 (en) | 2008-01-31 | 2011-08-16 | Panasonic Corporation | Secondary battery |
CN102299388A (en) * | 2011-07-19 | 2011-12-28 | 泉州劲鑫电子有限公司 | Ni-MH power battery and production technology thereof |
KR101329876B1 (en) * | 2006-07-18 | 2013-11-15 | 삼성에스디아이 주식회사 | Rechargeable battery comprising electrode tab with elasticity |
CN105226205A (en) * | 2014-06-30 | 2016-01-06 | 松下能源(无锡)有限公司 | Battery sealing constructs and employs the battery of this battery sealing structure |
CN113994537A (en) * | 2019-07-11 | 2022-01-28 | 株式会社Lg新能源 | Cylindrical battery |
-
1992
- 1992-07-16 JP JP4188459A patent/JPH0636756A/en active Pending
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999005749A1 (en) * | 1997-07-25 | 1999-02-04 | Minnesota Mining And Manufacturing Company | Thermal conductor for high-energy electrochemical cells |
JP2007234486A (en) * | 2006-03-03 | 2007-09-13 | Gs Yuasa Corporation:Kk | Battery |
KR101329876B1 (en) * | 2006-07-18 | 2013-11-15 | 삼성에스디아이 주식회사 | Rechargeable battery comprising electrode tab with elasticity |
JP2008066302A (en) * | 2006-09-05 | 2008-03-21 | Saft Groupe Sa | Storage battery and its manufacturing method |
US7998612B2 (en) | 2008-01-31 | 2011-08-16 | Panasonic Corporation | Secondary battery |
JP2010061892A (en) * | 2008-09-02 | 2010-03-18 | M & G Eco Battery:Kk | Secondary battery with spirally-rolled electrode group |
US8557410B2 (en) | 2008-09-02 | 2013-10-15 | M&G Eco-Battery Co., Ltd. | Secondary battery with a spirally-rolled electrode group |
EP2159861A1 (en) * | 2008-09-02 | 2010-03-03 | M&G Eco-Battery Co., Ltd. | Secondary battery with a spirally-rolled electrode group |
JP2011014249A (en) * | 2009-06-30 | 2011-01-20 | Hitachi Vehicle Energy Ltd | Sealed battery |
CN102299388A (en) * | 2011-07-19 | 2011-12-28 | 泉州劲鑫电子有限公司 | Ni-MH power battery and production technology thereof |
CN105226205A (en) * | 2014-06-30 | 2016-01-06 | 松下能源(无锡)有限公司 | Battery sealing constructs and employs the battery of this battery sealing structure |
CN105226205B (en) * | 2014-06-30 | 2017-10-31 | 松下能源(无锡)有限公司 | Battery sealing construction and the battery for having used battery sealing construction |
CN113994537A (en) * | 2019-07-11 | 2022-01-28 | 株式会社Lg新能源 | Cylindrical battery |
EP3972045A4 (en) * | 2019-07-11 | 2022-08-03 | LG Energy Solution, Ltd. | Cylindrical battery |
CN113994537B (en) * | 2019-07-11 | 2024-06-04 | 株式会社Lg新能源 | Cylindrical battery |
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