JPH07245093A - Upper cover of rectangular sealed battery - Google Patents
Upper cover of rectangular sealed batteryInfo
- Publication number
- JPH07245093A JPH07245093A JP6036663A JP3666394A JPH07245093A JP H07245093 A JPH07245093 A JP H07245093A JP 6036663 A JP6036663 A JP 6036663A JP 3666394 A JP3666394 A JP 3666394A JP H07245093 A JPH07245093 A JP H07245093A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- hollow
- hollow rivet
- sealed battery
- battery
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/567—Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、角形密閉電池の上蓋に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper lid of a prismatic sealed battery.
【０００２】[0002]
【従来の技術】従来角形密閉電池の上蓋の構造として
は、図３に示すように、中空リベット１は頭部が矩形状
であり、該頭部を上方にして、パッキン２と、正極リー
ド３に接続されたワッシャ４とを介して先端部１′をか
しめ接合して蓋板５と固定されており、また弁体６は、
中空リベット１の中空部を閉鎖するような状態で中空リ
ベット１の頭部に載置し、該中空リベット１の頭部と同
形状のフランジを有する端子キャップ７を弁体６を覆う
ように中空リベット１の上面部に接合固定する。従っ
て、正極リード３は中空リベット１の先端部１′にかし
め接合により接続されたワッシャ４に接続されている構
造であった。2. Description of the Related Art As a conventional structure of an upper lid of a prismatic sealed battery, as shown in FIG. 3, a hollow rivet 1 has a rectangular head, and with the head facing upward, a packing 2 and a positive electrode lead 3 are provided. The tip portion 1 ′ is caulked and joined to the lid plate 5 via the washer 4 connected to the valve body 6, and the valve body 6 is
The hollow rivet 1 is placed on the head of the hollow rivet 1 in such a manner that the hollow part of the hollow rivet 1 is closed, and the terminal cap 7 having a flange of the same shape as the head of the hollow rivet 1 is hollow so as to cover the valve body 6. It is bonded and fixed to the upper surface of the rivet 1. Therefore, the positive electrode lead 3 has a structure in which it is connected to the washer 4 which is connected to the tip portion 1'of the hollow rivet 1 by caulking.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来のワッシャ４に正極リード３を接続する構造では、中
空リベット１とワッシャ４との接続をかしめ接合で行っ
ているため、正極リード３から端子キャップ７までの電
気的通電経路において、かしめ接合が通電の不安定要素
となっている。即ち、中空リベット１の先端部１′をか
しめ接合する場合、図３に示すように、パッキン２を圧
縮し該パッキン２の復元力で密閉電池としての気密性お
よび中空リベット１の先端部１′のかしめ接合部分とワ
ッシャ４との接触による通電性を得ている。然し乍ら、
（１）パッキン２の圧縮が十分でない状態でかしめ接合
されたかしめ不良の場合、（２）かしめ接合部分に油な
ど絶縁性異物が付着した状態でかしめ接合した場合、
（３）パッキン２の応力緩和により復元力が弱くなり、
かしめ接合部分とワッシャ４との接触力が十分得られな
くなった場合、等において、接触部の接触抵抗が増加
し、通電が不安定になり、電池の電気的特性が低下する
という問題点があった。However, in the conventional structure in which the positive electrode lead 3 is connected to the washer 4, the hollow rivet 1 and the washer 4 are connected by caulking, so that the positive electrode lead 3 is connected to the terminal cap. In the electrical energization path up to 7, the caulking joint is an unstable element of energization. That is, when caulking and joining the tip portion 1 ′ of the hollow rivet 1, as shown in FIG. 3, the packing 2 is compressed and the restoring force of the packing 2 serves to provide airtightness as a sealed battery and the tip portion 1 ′ of the hollow rivet 1. Electricity is obtained by the contact between the caulked joint and the washer 4. However,
(1) If the caulking joint is not properly crimped and the caulking is not sufficient, (2) If caulking joint is performed with insulating foreign matter such as oil adhered to the caulking joint part,
(3) Restoring force is weakened due to stress relaxation of packing 2,
When the contact force between the caulking joint portion and the washer 4 is not sufficiently obtained, there is a problem that the contact resistance of the contact portion increases, the energization becomes unstable, and the electrical characteristics of the battery deteriorate. It was
【０００４】本発明の目的は、正極リードから正極端子
となる端子キャップまでの通電経路において、通電の不
安定要素のない、安定した通電特性を得ることができる
角形密閉電池の上蓋を提供することである。An object of the present invention is to provide an upper lid of a prismatic sealed battery which can obtain stable energization characteristics without an unstable element of energization in an energization path from a positive electrode lead to a terminal cap serving as a positive electrode terminal. Is.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、中空リベットと端子キャップと弁体とを
有する角形密閉電池の上蓋において、パッキンとワッシ
ャとを介して蓋板に固定される中空リベットの先端部
に、正極板の正極リードが抵抗溶接されている接続板が
中空リベットの中空部と接続板の突出部を抵抗溶接で接
続固定されて、端子キャップを弁体を覆うようにして中
空リベットの上部のフランジ部に抵抗溶接固定すること
を特徴とするものである。In order to solve the above-mentioned problems, the present invention relates to an upper lid of a prismatic sealed battery having a hollow rivet, a terminal cap and a valve body, which is fixed to a lid plate through a packing and a washer. The positive electrode lead of the positive electrode plate is resistance-welded to the tip of the hollow rivet.The connection plate is connected and fixed by resistance welding to the hollow part of the hollow rivet and the protruding part of the connection plate, and the terminal cap covers the valve body. Thus, the hollow rivet is fixed to the upper flange portion by resistance welding.
【０００６】[0006]
【作用】正極リードと端子キャップ間の電気的な接続
は、抵抗溶接で金属の融着による接合となるため、かし
めによる接触に比べて、電気的な抵抗値が低くなり安定
する。The electrical connection between the positive electrode lead and the terminal cap is made by fusion welding of metal by resistance welding, so that the electrical resistance value becomes lower and stable compared with the contact by caulking.
【０００７】[0007]
【実施例】本発明の一実施例を説明する。１は中空リベ
ットで、先端部１′をかしめ接合によりワッシャ４と接
続されている。該中空リベット１はフランジ部が上部に
なるようにして、パッキン２とワッシャ４とを介して中
空リベット１の先端部１′をかしめ接合して蓋板５に固
定される。また、正極リードでは、接続板８の片端部に
抵抗溶接で接続されている。該接続板８は、図２に示す
ように、中空リベット１の先端部１′の位置決めのため
の突出部９が片側部に設けられ、該突出部９内には、中
空リベット１の中空部と連通する孔部１０を有してい
る。また突出部９は、中空リベット１の先端部１′の位
置決めと併せて中空リベット１の中空部の内壁に沿って
当合させた状態で抵抗溶接することにより、接続板８の
突出部９と中空リベット１の中空部とが接続される。さ
らに、弁体６は、中空リベット１の中空部を閉鎖するよ
うな状態で中空リベット１に接して配在されるが、中空
リベット１と端子キャップ７とは、弁体６が中空リベッ
ト１の中空部を塞ぐような押し付け状態にあって端子キ
ャップ７と中空リベット１のフランジ部とが接する部分
で抵抗溶接により接合固定される。EXAMPLE An example of the present invention will be described. A hollow rivet 1 is connected to a washer 4 by caulking and joining a tip portion 1 '. The hollow rivet 1 is fixed to the cover plate 5 by caulking and joining the tip 1'of the hollow rivet 1 with the packing 2 and the washer 4 so that the flange portion is on the upper side. The positive electrode lead is connected to one end of the connecting plate 8 by resistance welding. As shown in FIG. 2, the connecting plate 8 is provided with a protruding portion 9 for positioning the tip portion 1 ′ of the hollow rivet 1 on one side, and the hollow portion of the hollow rivet 1 is provided in the protruding portion 9. It has a hole portion 10 communicating with. Further, the projection 9 and the projection 9 of the connection plate 8 are resistance-welded together with the positioning of the tip 1 ′ of the hollow rivet 1 along the inner wall of the hollow part of the hollow rivet 1. The hollow part of the hollow rivet 1 is connected. Further, the valve body 6 is disposed in contact with the hollow rivet 1 in a state of closing the hollow portion of the hollow rivet 1, but the hollow rivet 1 and the terminal cap 7 have the valve body 6 of the hollow rivet 1. When the terminal cap 7 and the flange of the hollow rivet 1 are in contact with each other in a pressed state of closing the hollow portion, they are joined and fixed by resistance welding.
【０００８】次に、本発明と従来の角形密閉電池の上蓋
の構造における端子キャップ７と正極リード３間の抵抗
値の比較を表１に示す。Next, Table 1 shows a comparison of the resistance values between the terminal cap 7 and the positive electrode lead 3 in the structure of the upper lid of the present invention and the conventional rectangular sealed battery.
【０００９】[0009]
【表１】 [Table 1]
【００１０】上記表１から明らかなように、図１に示す
本発明の上蓋は、正極リード３と正極端子となる端子キ
ャップ７間の電気的接続が、金属の融着による接合であ
るため、電気的抵抗値が表１に示すように、３．４ｍΩ
〜２．６ｍΩに改善された。この種上蓋のかしめ接続で
は、かしめの変形強度で接触抵抗が変化し、パッキン等
によるかしめ部の緩和によっても抵抗値が変化する。As is apparent from Table 1 above, in the upper lid of the present invention shown in FIG. 1, since the electrical connection between the positive electrode lead 3 and the terminal cap 7 serving as the positive electrode terminal is the joining by metal fusion, The electric resistance value is 3.4 mΩ as shown in Table 1.
It was improved to ~ 2.6 mΩ. In the caulking connection of this type of lid, the contact resistance changes depending on the deformation strength of the caulking, and the resistance value also changes due to the relaxation of the caulking portion by packing or the like.
【００１１】図４は、０．２ＣｍＡｈ角形密閉電池の本
発明品と従来品との放電特性の比較を示す曲線図であ
る。図４から明らかなように、従来品に比べて、本発明
品は電圧降下が少なく、寿命が長くなっている。FIG. 4 is a curve diagram showing a comparison of the discharge characteristics of the present invention product and the conventional product of the 0.2 CmAh prismatic closed battery. As is apparent from FIG. 4, the product of the present invention has a smaller voltage drop and a longer life than the conventional product.
【００１２】[0012]
【発明の効果】上述のように、本発明角形密閉電池の上
蓋は、正極リードから、正極端子となる端子キャップ間
は、抵抗溶接による金属の溶融状態で接続されることに
より、正極リードから端子キャップ迄の通電経路におい
て、通電の不安定要素のない、かしめによる接触に比べ
て、電気的な抵抗値が低く、安定することにより、通電
特性が向上する等の点で優れている。As described above, the upper lid of the prismatic sealed battery of the present invention is connected from the positive electrode lead to the positive electrode terminal by connecting the terminal caps serving as the positive electrode terminals in a molten state of metal by resistance welding. In the energization path to the cap, there are no unstable elements of energization, and the electrical resistance value is low compared to contact by caulking, and it is excellent in that the energization characteristics are improved due to stabilization.
【図１】本発明角形密閉電池の上蓋の構造を示す要部断
面図である。FIG. 1 is a sectional view of an essential part showing a structure of an upper lid of a prismatic sealed battery of the present invention.
【図２】本発明の一実施例の接続板の斜視図である。FIG. 2 is a perspective view of a connection plate according to an embodiment of the present invention.
【図３】従来の角形密閉電池の上蓋の構造を示す要部断
面図である。FIG. 3 is a cross-sectional view of essential parts showing the structure of a conventional lid of a prismatic sealed battery.
【図４】本発明の角形密閉電池と従来の角形密閉電池の
放電特性を示す曲線図である。FIG. 4 is a curve diagram showing discharge characteristics of the prismatic sealed battery of the present invention and a conventional prismatic sealed battery.
１は中空リベット、１′は先端部、２はパッキン、３は
正極リード、４はワッシャ、５は蓋板、６は弁体、７は
端子キャップ、８は接続板、９は突出部、１０は孔部。1 is a hollow rivet, 1'is a tip portion, 2 is a packing, 3 is a positive electrode lead, 4 is a washer, 5 is a cover plate, 6 is a valve body, 7 is a terminal cap, 8 is a connecting plate, 9 is a protruding portion, 10 Is a hole.
Claims (1)
する角形密閉電池の上蓋において、パッキンとワッシャ
とを介して蓋板に固定される中空リベットの先端部に、
正極板の正極リードが片端部で抵抗溶接されている接続
板が中空リベットの中空部と接続板の突出部とで抵抗溶
接により接続固定されて、端子キャップを弁体を覆うよ
うにして中空リベットのフランジ部に抵抗溶接で固定す
ることを特徴とする角形密閉電池の上蓋。1. An upper lid of a prismatic sealed battery having a hollow rivet, a terminal cap and a valve body, wherein a tip of the hollow rivet fixed to a lid plate through a packing and a washer,
The positive electrode lead of the positive electrode plate is resistance-welded at one end.The connection plate is connected and fixed by resistance welding between the hollow part of the hollow rivet and the protruding part of the connection plate, and the terminal cap covers the valve body. An upper lid of a prismatic sealed battery, which is fixed to the flange portion of the battery by resistance welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6036663A JPH07245093A (en) | 1994-03-08 | 1994-03-08 | Upper cover of rectangular sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6036663A JPH07245093A (en) | 1994-03-08 | 1994-03-08 | Upper cover of rectangular sealed battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07245093A true JPH07245093A (en) | 1995-09-19 |
Family
ID=12476105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6036663A Pending JPH07245093A (en) | 1994-03-08 | 1994-03-08 | Upper cover of rectangular sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07245093A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002324541A (en) * | 2001-04-25 | 2002-11-08 | Matsushita Electric Ind Co Ltd | Sealed battery |
| EP1318554A2 (en) * | 2001-12-04 | 2003-06-11 | NEC TOKIN Tochigi, Ltd. | Sealing structure for a terminal pole in a closed type battery |
| JP2005175414A (en) * | 2003-02-10 | 2005-06-30 | Nok Corp | Sealing plate and its manufacturing method |
| JP2006004778A (en) * | 2004-06-17 | 2006-01-05 | Toyota Motor Corp | Manufacturing method of packing and caulking-assembled good part, manufacturing method of battery case lid, and manufacturing method of battery |
| JP2008251411A (en) * | 2007-03-30 | 2008-10-16 | Sanyo Electric Co Ltd | Sealed battery and its manufacturing method |
| US10269502B2 (en) | 2015-08-25 | 2019-04-23 | Gs Yuasa International Ltd. | Energy storage device including a conductive member penetrating a container and a fixing member covering the conductive member |
-
1994
- 1994-03-08 JP JP6036663A patent/JPH07245093A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002324541A (en) * | 2001-04-25 | 2002-11-08 | Matsushita Electric Ind Co Ltd | Sealed battery |
| EP1318554A2 (en) * | 2001-12-04 | 2003-06-11 | NEC TOKIN Tochigi, Ltd. | Sealing structure for a terminal pole in a closed type battery |
| EP1318554A3 (en) * | 2001-12-04 | 2004-04-07 | NEC TOKIN Tochigi, Ltd. | Sealing structure for a terminal pole in a closed type battery |
| US7029790B2 (en) | 2001-12-04 | 2006-04-18 | Neo Tokin Tochigi, Ltd. | Closed type battery |
| JP2005175414A (en) * | 2003-02-10 | 2005-06-30 | Nok Corp | Sealing plate and its manufacturing method |
| JP2006004778A (en) * | 2004-06-17 | 2006-01-05 | Toyota Motor Corp | Manufacturing method of packing and caulking-assembled good part, manufacturing method of battery case lid, and manufacturing method of battery |
| JP4715114B2 (en) * | 2004-06-17 | 2011-07-06 | トヨタ自動車株式会社 | Battery case lid packing, battery case lid manufacturing method, battery manufacturing method |
| JP2008251411A (en) * | 2007-03-30 | 2008-10-16 | Sanyo Electric Co Ltd | Sealed battery and its manufacturing method |
| US10269502B2 (en) | 2015-08-25 | 2019-04-23 | Gs Yuasa International Ltd. | Energy storage device including a conductive member penetrating a container and a fixing member covering the conductive member |
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