JP2003068273A - Sealed battery - Google Patents
Sealed batteryInfo
- Publication number
- JP2003068273A JP2003068273A JP2001256075A JP2001256075A JP2003068273A JP 2003068273 A JP2003068273 A JP 2003068273A JP 2001256075 A JP2001256075 A JP 2001256075A JP 2001256075 A JP2001256075 A JP 2001256075A JP 2003068273 A JP2003068273 A JP 2003068273A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- header
- tab
- insulating member
- sealed
- 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.)
- Granted
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
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
(57)【要約】 （修正有）
【課題】 電極導出ピンを絶縁性部材を介して取り付け
た電池ヘッダーを装着した密閉型電池において、電池要
素と電極導出ピンとを接続するタブが、電池缶に接触し
て短絡を生じることがない密閉型電池を提供する。
【解決手段】 電池缶２の極性と異種の極性の電池端子
６を絶縁性部材を介して設けた電池ヘッダー７を装着し
た密閉型電池１において、電池要素に接続したタブ８が
電池ヘッダーの金属板に絶縁性部材を介して設けた接合
部に接合されていると共に、電池要素に接続したタブ８
と電池缶２の内壁面との間には、電池ヘッダー６の金属
板に装着した絶縁性部材を折り曲げて形成した区画壁部
１２が形成されている密閉型電池。
(57) [Summary] (Problem corrected) [PROBLEMS] In a sealed battery equipped with a battery header in which an electrode lead pin is attached via an insulating member, a tab for connecting a battery element and the electrode lead pin is provided on a battery can. Provided is a sealed battery that does not cause a short circuit upon contact. SOLUTION: In a sealed battery 1 mounted with a battery header 7 provided with battery terminals 6 having polarities different from the polarity of a battery can 2 via an insulating member, a tab 8 connected to a battery element is made of metal of the battery header. Tab 8 joined to a joint provided on the plate via an insulating member and connected to the battery element
A sealed battery in which a partition wall portion 12 formed by bending an insulating member mounted on a metal plate of a battery header 6 is formed between the inner wall surface of the battery can 2 and the inner wall surface of the battery can 2.
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、密閉型電池に関
し、特に電池缶の極性と異なる極性の電池端子を金属板
に絶縁性部材を装着して設けた電池ヘッダーに特徴を有
する密閉型電池に関する。
【０００２】
【従来の技術】小型の電子機器の電源として各種の電池
が用いられており、携帯電話、ノートパソコン、カムコ
ーダ等の電源として、小型で大容量のリチウム電池やリ
チウムイオン二次電池等の密閉型電池が用いられてい
る。機器の小型化に対応して、円筒型電池に加えて、小
さな空間を有効に利用することができる角型の密閉式電
池がひろく用いられている。角型電池においては、電池
の一方の電極として作用する電池缶と絶縁性部材によっ
て隔離した電池端子が取り付けられている。
【０００３】図４に、角型の密閉型電池の電池ヘッダー
部の構造の説明する図を示す。密閉型電池１は、ステン
レス鋼、ニッケルめっきを表面に施した軟鋼等、アルミ
ニウムからなる角筒状の金属容器２（以下、電池缶とも
称す）に、正極電極および負極電極をセパレータを介し
て対向させて巻回した電池要素３が収納されており、電
池缶２の上端には、金属板４に絶縁性部材５を介して取
り付けた電極導出ピン６からなる電池ヘッダー７が取り
付けられて電池缶２を封口している。電池ヘッダー７の
電池缶２の内部側の電極導出ピン６には、電池要素３の
一方のタブ８が接合されており、他方のタブ９が電池缶
の内壁面に接合されている。電池缶２と極性が異なるタ
ブ８が電池缶２に接触すると短絡を生じるので、タブ８
の電池要素３の近傍には絶縁性部材１０で被覆するとと
もに、電池要素の上部には、船状のスペーサー１１を装
着することが行われている。
【０００４】ところが、電池缶２と極性が異なるタブ８
は、電池要素と電極導出ピン６の接続部との直線距離に
比べて長いタブが折り曲げられた状態で装着されている
ために、電池要素の上部に設けたスペーサー１１の上部
と電池ヘッダーの間から延びて電池缶２に接触したり、
また外部からの衝撃によって位置ずれ等が生じて接触し
て短絡を生じるおそれがあった。
【０００５】図５は、従来の密閉型電池の製造工程の一
例を説明する図である。図５（Ａ）に示すように、電池
要素３を電池缶２内に収納し、電池要素に接続した一方
のタブ９を電池缶２の内壁面に接合し、電池要素の上部
にスペーサーを装着した後に、電池ヘッダー７を電池缶
の装着状態とはほぼ直角に配置した状態で電極導出ピン
６にタブ８を接合する。次いで、図５（Ｂ）に示すよう
に、タブ８と電池ヘッダー７との接合部の端部で大きく
折り曲げるとともに、その下部でも折り曲げている。こ
うして、タブを折り曲げた後に、図５（Ｃ）に示すよう
に、電池ヘッダー７を電池缶２の開口部に装着して電池
缶２と電池ヘッダー７の会合部を溶接によって封口して
いる。電池要素２と電極導出ピン６とを結合するタブ８
は、電池要素３の近傍は、絶縁性部材１０によって絶縁
されており、また電池要素３上にはスペーサー１１が配
置されているので、電池要素２の近傍では電池缶２の内
壁面との接触して短絡を生じる可能性は小さいが、電極
導出ピン６との接合部の近傍は溶接の問題で被覆されて
おらず。また中間の折り曲げ部も折り曲げが容易に行わ
れるようにするために、絶縁性部材による被覆は行われ
ていない。このため、電池缶の内壁面と接触する可能性
を完全になくすことは困難であった。こうした電池ヘッ
ダー部でのタブと電池缶の内壁面との接触による短絡を
防止するために、特開平８−１５３５１１号公報におい
ては、円筒形電池において電池要素の上部に絶縁性リン
グを配置することが提案されているが、電池要素上にス
ペーサを配置するものであり充分なものではなかった。
また、特開平８−３２９１１号公報には、電池ヘッダー
に設ける絶縁板とスペーサーとを一体に構成するととも
に、スペーサーにタブの接続用の開口部を設けることが
記載されているが、従来の電池ヘッダーに比べて構造が
複雑であり、製造工程も煩雑なものである。
【０００６】
【発明が解決しようとする課題】本発明は、電極導出ピ
ンを絶縁性部材を介して取り付けた電池ヘッダーを装着
した密閉型電池において、電池要素と電極導出ピンとを
接続するタブが、電池缶に接触して短絡を生じることが
ない密閉型電池を提供することを課題とするものであ
る。
【０００７】
【課題を解決するための手段】本発明の課題は、電池缶
の極性と異種の極性の電池端子を絶縁性部材を介して設
けた電池ヘッダーを装着した密閉型電池において、電池
要素に接続したタブが電池ヘッダーの金属板に絶縁性部
材を介して設けた接合部に接合されていると共に、電池
要素に接続したタブと電池缶の内壁面との間には、電池
ヘッダーの金属板に装着した絶縁性部材を折り曲げて形
成した区画壁部が形成されている密閉型電池によって解
決することができる。また、区画壁部が、電池要素に接
続したタブを接合部に接合した後に、タブの折り曲げの
後に、絶縁性部材を折り曲げて形成した前記の密閉型電
池である。電池ヘッダーの金属板に取り付けた絶縁性部
材は、折り曲げ用の肉薄部が形成された前記の密閉型電
池である。接合部が、電池ヘッダーの金属板に絶縁性部
材を介して取り付けた電極導出ピン、あるいは電極導出
ピンによってかしめて取り付けた接合用金属板である前
記の密閉型電池である。また、リチウムイオン電池であ
る前記の密閉型電池である。また、電池缶の極性と異種
の極性の電池端子を設けた電池ヘッダーを装着した密閉
型電池の製造方法において、電池要素に接続したタブを
電池ヘッダーの金属板に絶縁性部材を介して設けた接合
部に接合の後に、タブを折り曲げるとともに、絶縁性部
材を折り曲げてタブの区画壁部を形成した後に、電池ヘ
ッダーを電池缶の開口部に装着して封口する密閉型電池
の製造方法である。
【０００８】
【発明の実施の形態】本発明の密閉型電池は、電池要素
に接続したタブを電池ヘッダーと接合した後に、タブを
折り曲げる等の処理を行って電池缶内に収納する密閉型
電池におけるタブと電池缶の内壁面との導電接触の防止
を電池ヘッダー側に設けた絶縁性部材からなる区画壁部
によって可能であることを見いだしたものである。区画
壁部としては、電池ヘッダーの接合部にタブを抵抗溶
接、レーザー溶接等によって接合する際に問題なく接合
することができるような構造を有するものでは、区画壁
部と接合部との距離が大きく、タブの位置を制限して導
電接触が生じないようにする機能が不充分であり、タブ
の接合時には区画壁部が形成されておらず、タブの接合
の後に絶縁性部材の一部を折り曲げて形成されるタブと
の距離が短い区画壁部の形成によって実現可能であるこ
とを見いだしたものである。
【０００９】図１は、本発明の密閉型電池を説明する図
である。本発明の密閉型電池１は、ステンレス鋼、ニッ
ケルめっきを表面に施した軟鋼、アルミニウム等からな
る角筒状の金属容器２（以下、電池缶とも称す）に、正
極電極および負極電極をセパレータを介して対向させた
ものを巻回した電池要素３が収納されており、電池缶２
の上端には、金属板４に絶縁性部材５を介して取り付け
た電極導出ピン６からなる電池ヘッダー７が取り付けら
れて電池缶２の開口部に装着されて封口されている。電
池ヘッダー７の電池缶２の内部側の電極導出ピン６に電
池要素３の一方のタブ８が接合されており、他方のタブ
９が電池缶の内壁面に接合されている。絶縁性部材５の
一部は、タブ８が電池缶の壁面と接触することを防止し
た区画壁部１２を形成している。したがって、折り曲げ
られたタブ８は、電池缶の内壁面に接触することはな
く、また外部から衝撃が加わっても区画壁部１２によっ
て移動が制限されるのでタブ８と電池缶の内壁面との電
気的接触が生じることがない信頼性の大きな密閉型電池
を得ることが可能となる。
【００１０】以上の説明においては、電池要素の他方の
タブが電池缶の内壁面に接合されている例について述べ
たが、電池ヘッダーの金属板に接合されたものであって
も良い。電池ヘッダーの金属板への接合は、電極導出ピ
ンに一方のタブを接合する工程において、絶縁性部材の
外側の部分へ同様に接合することによって行うことがで
きる。
【００１１】図２は、本発明の密閉型電池の製造工程の
一例を説明する図を示す。図２（Ａ）に示すように、電
池要素３を電池缶２内に収納し、電池要素に接続した一
方のタブ９を電池缶２の内壁面に接合し、電池要素の上
部にスペーサーを装着した後に、電池ヘッダー７を電池
缶の装着状態とはほぼ直角に配置した状態で電極導出ピ
ン６にタブ８を接合する。絶縁性部材５には切り込み部
１３が形成されている。次いで、図２（Ｂ）に示すよう
に、タブ８と電池ヘッダー７との接合部の端部で大きく
折り曲げるとともに、その下部でも折り曲げる。更に、
絶縁性部材５に設けた切り込み部１３によって両端部を
直角に折り曲げることによって区画壁部１２を形成す
る。図２（Ｃ）に示すように、電池ヘッダー７を電池缶
２の開口部に装着して電池缶２と電池ヘッダー７の会合
部を溶接によって封口する。電池要素２と電極導出ピン
６とを結合するタブ８は、電池ヘッダーから伸びる区画
壁部１２によって電池缶の内壁面に接触して短絡するこ
とが防止できる。以上の説明では、一方のタブを電池缶
の内壁面に接合する例について述べたが、電池ヘッダー
へのタブの接合工程において、電池ヘッダーの金属板に
接合しても良い。
【００１２】図３は、本発明の密閉型電池の電池に組立
前の電池ヘッダーの一例を説明する図である。図３
（Ａ）は、電池ヘッダーの一部に断面図を示す側面図で
あり、図３（Ｂ）は、電池缶の内部側から見た電池ヘッ
ダーの平面図である。電池ヘッダー７は、金属板４に設
けた貫通孔１４に絶縁性部材５に設けた円筒部５Ｂを貫
通させ、電池ヘッダーの外側から外部絶縁部材５Ｃを装
着する。更に絶縁性部材５に設けた円筒部５Ａの貫通孔
１５に電極導出ピン６を貫通させ、内部絶縁性部材５Ａ
に接して配置した、押さえ板１６上からかしめて固着と
封止が行われている。また、絶縁性部材５には、切り込
み部１３が形成されており、切り込み部１３に沿って折
り曲げることができる。以上の説明では、電池ヘッダー
に設ける絶縁性部材５が複数の部材から構成されている
例について述べたが、金属板４の電池缶の外面側と電池
缶の内面側の部材が一体に構成されたものであっても良
い。
【００１３】インサートモールド等によって絶縁性部材
がヘッダーを構成する蓋体部分の金属板に一体に形成さ
れた場合には、絶縁性部材を複数の部材によって構成し
た場合に比べて、厚みを薄くすることができるので、ヘ
ッダーの小型化が可能となる。さらに、ヘッダーの組立
工程数を減少することが可能となる。絶縁性部材として
は、ポリプロピレン、あるいはテトラフルオロエチレン
−パーフルオロアルコキシエチレン共重合体（ＰＦ
Ａ）、テトラフルオロエチレン−ヘキサフルオロプロピ
レン共重合体（ＦＥＰ）等の熱可塑性フッ素樹脂等を挙
げることができる。また、電極導出ピンとして陽分極さ
れた場合に表面に耐食性の酸化皮膜を形成するアルミニ
ウム、あるいはアルミニウム合金等の金属を用いる場合
には、接続用のニッケル、銅等のリード線の溶接による
接続が困難であるので、電池ヘッダーには、ニッケル
板、ニッケルめっきを施した軟鋼板、銅板、洋白板等の
接合特性の良好な金属からなる電極引出板を、電池ヘッ
ダーの金属板上に載置して電極導出ピンによってかしめ
ることが好ましい。また、電極引出板には、電極引出板
と電極導出ピンとの接触抵抗を低下させ、さらには電池
端子部に付着した電解液による化学的な腐食および接触
電位差による電気化学的な溶出および腐食を防止する点
で有効である。電極引出板にめっきする金属としては、
金等の貴金属、銀、錫等を挙げることができるが、とく
に耐食性が大きな金等の貴金属を用いて行うことが好ま
しい。
【００１４】
【発明の効果】電池缶の極性と異種の極性の電池端子を
絶縁性部材によって取り付けた電池ヘッダーにおいて、
電池要素に接続したタブを電池ヘッダーの接合部に接合
した後に、電池ヘッダーに取り付けた絶縁性部材を接合
部を囲むように折り曲げて区画壁としてタブが電池缶の
内壁面に接触することを防止したので、あらかじめ区画
壁を設けた後にタブを接合するものに比べて、両者の接
触の防止する機能が確実な区画壁を形成することができ
るので、信頼性が高い密閉型電池を提供することができ
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed battery, and more particularly, to a battery terminal having a polarity different from the polarity of a battery can provided by attaching an insulating member to a metal plate. The present invention relates to a sealed battery characterized by a battery header. 2. Description of the Related Art Various batteries are used as power supplies for small electronic devices. Small and large-capacity lithium batteries and lithium ion secondary batteries are used as power supplies for mobile phones, notebook computers, camcorders and the like. Is used. In response to miniaturization of devices, in addition to cylindrical batteries, rectangular sealed batteries that can effectively utilize a small space are widely used. In a prismatic battery, a battery terminal acting as one electrode of the battery and a battery terminal separated by an insulating member are attached. FIG. 4 is a view for explaining the structure of a battery header section of a rectangular sealed battery. In a sealed battery 1, a positive electrode and a negative electrode are opposed to a rectangular cylindrical metal container 2 (hereinafter also referred to as a battery can) made of aluminum, such as stainless steel or nickel-plated mild steel, with a separator interposed therebetween. The battery element 3 wound and wound is housed, and a battery header 7 including an electrode lead-out pin 6 attached to a metal plate 4 via an insulating member 5 is attached to an upper end of the battery can 2. 2 is sealed. One tab 8 of the battery element 3 is joined to the electrode lead-out pin 6 inside the battery can 2 of the battery header 7, and the other tab 9 is joined to the inner wall surface of the battery can. When the tab 8 having a polarity different from that of the battery can 2 contacts the battery can 2, a short circuit occurs.
In addition to covering the vicinity of the battery element 3 with an insulating member 10, a ship-shaped spacer 11 is mounted on the upper part of the battery element. However, a tab 8 having a polarity different from that of the battery can 2.
Since the tab longer than the linear distance between the battery element and the connection portion of the electrode lead-out pin 6 is mounted in a bent state, the space between the upper part of the spacer 11 provided on the upper part of the battery element and the battery header is provided. From the battery can 2
Further, there is a possibility that a positional shift or the like occurs due to an external impact, and a short circuit occurs due to contact. FIG. 5 is a diagram for explaining an example of a manufacturing process of a conventional sealed battery. As shown in FIG. 5A, the battery element 3 is housed in the battery can 2, one tab 9 connected to the battery element is joined to the inner wall surface of the battery can 2, and a spacer is mounted on the upper part of the battery element. After that, the tab 8 is joined to the electrode lead-out pin 6 in a state where the battery header 7 is arranged substantially at right angles to the mounted state of the battery can. Next, as shown in FIG. 5 (B), the end portion of the joining portion between the tab 8 and the battery header 7 is largely bent, and the lower portion is also bent. After the tab is bent in this manner, as shown in FIG. 5 (C), the battery header 7 is attached to the opening of the battery can 2 and the junction between the battery can 2 and the battery header 7 is sealed by welding. Tab 8 for connecting battery element 2 and electrode lead-out pin 6
Since the vicinity of the battery element 3 is insulated by the insulating member 10 and the spacer 11 is disposed on the battery element 3, the contact with the inner wall surface of the battery can 2 near the battery element 2. Although the possibility of short-circuiting is small, the vicinity of the joint with the electrode lead-out pin 6 is not covered due to welding problems. Also, the intermediate bent portion is not coated with an insulating member so that the bending can be easily performed. For this reason, it was difficult to completely eliminate the possibility of contact with the inner wall surface of the battery can. In order to prevent a short circuit due to the contact between the tab and the inner wall surface of the battery can at the battery header, Japanese Patent Application Laid-Open No. 8-153511 discloses a method of disposing an insulating ring above a battery element in a cylindrical battery. However, it is not sufficient because a spacer is arranged on a battery element.
Japanese Patent Application Laid-Open No. 8-32911 discloses that an insulating plate and a spacer provided on a battery header are integrally formed and an opening for connecting a tab is provided on the spacer. The structure is complicated as compared with the header, and the manufacturing process is complicated. SUMMARY OF THE INVENTION The present invention relates to a sealed battery in which a battery header in which an electrode lead-out pin is attached via an insulating member is provided, wherein a tab for connecting a battery element and the electrode lead-out pin is provided. An object of the present invention is to provide a sealed battery in which a short circuit does not occur due to contact with a battery can. SUMMARY OF THE INVENTION An object of the present invention is to provide a sealed battery having a battery header provided with battery terminals of a polarity different from the polarity of the battery can via an insulating member. The tab connected to the battery header is joined to the joint provided on the metal plate of the battery header via an insulating member, and the metal of the battery header is provided between the tab connected to the battery element and the inner wall surface of the battery can. The problem can be solved by a sealed battery in which a partition wall formed by bending an insulating member attached to a plate is formed. Further, in the above sealed battery, the partition wall portion is formed by joining the tab connected to the battery element to the joining portion, folding the tab, and then folding the insulating member. The insulating member attached to the metal plate of the battery header is the above-described sealed battery in which a thin portion for bending is formed. In the above sealed battery, the joint is an electrode lead-out pin attached to a metal plate of the battery header via an insulating member, or a joining metal plate attached by caulking with the electrode lead-out pin. Further, the above sealed battery is a lithium ion battery. Further, in the method for manufacturing a sealed battery in which a battery header provided with battery terminals having different polarities from the polarity of the battery can is provided, a tab connected to the battery element is provided on a metal plate of the battery header via an insulating member. This is a method for manufacturing a sealed battery in which, after joining to a joining portion, a tab is bent and an insulating member is bent to form a partition wall portion of the tab, and a battery header is attached to an opening of a battery can and sealed. . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sealed battery according to the present invention is a sealed battery in which a tab connected to a battery element is joined to a battery header, and then the tab is bent and the like is housed in a battery can. It has been found that the conductive contact between the tab and the inner wall surface of the battery can can be prevented by a partition wall portion made of an insulating member provided on the battery header side. When the partition wall has a structure that allows the tab to be joined to the junction of the battery header by resistance welding, laser welding, etc. without any problem, the distance between the partition wall and the junction is small. Large, the function of restricting the position of the tab to prevent conductive contact from occurring is insufficient, the partition wall is not formed when the tab is joined, and a part of the insulating member is removed after the tab is joined. It has been found that the distance from a bent tab can be realized by forming a partition wall portion having a short distance. FIG. 1 is a diagram illustrating a sealed battery according to the present invention. In a sealed battery 1 of the present invention, a positive electrode and a negative electrode are provided with a separator in a rectangular cylindrical metal container 2 (hereinafter also referred to as a battery can) made of stainless steel, nickel-plated mild steel, aluminum or the like. A battery element 3 wound around a battery can is accommodated in the battery can 2
A battery header 7 including an electrode lead-out pin 6 attached to a metal plate 4 via an insulating member 5 is attached to the upper end of the battery can 4, and is attached to the opening of the battery can 2 and sealed. One tab 8 of the battery element 3 is joined to the electrode lead-out pin 6 inside the battery can 2 of the battery header 7, and the other tab 9 is joined to the inner wall surface of the battery can. Part of the insulating member 5 forms a partition wall portion 12 that prevents the tab 8 from contacting the wall surface of the battery can. Therefore, the bent tab 8 does not come into contact with the inner wall surface of the battery can, and the movement of the tab 8 and the inner wall surface of the battery can are restricted by the partition wall portion 12 even when an external impact is applied. It is possible to obtain a highly reliable sealed battery that does not cause electrical contact. In the above description, an example in which the other tab of the battery element is joined to the inner wall surface of the battery can is described. However, the tab may be joined to the metal plate of the battery header. The joining of the battery header to the metal plate can be performed by similarly joining to the outer portion of the insulating member in the step of joining one tab to the electrode lead-out pin. FIG. 2 is a view for explaining an example of the manufacturing process of the sealed battery of the present invention. As shown in FIG. 2A, the battery element 3 is housed in the battery can 2, one tab 9 connected to the battery element is joined to the inner wall surface of the battery can 2, and a spacer is mounted on the upper part of the battery element. After that, the tab 8 is joined to the electrode lead-out pin 6 in a state where the battery header 7 is arranged substantially at right angles to the mounted state of the battery can. A cut 13 is formed in the insulating member 5. Then, as shown in FIG. 2 (B), the end portion of the joining portion between the tab 8 and the battery header 7 is largely bent, and the lower portion is also bent. Furthermore,
The partition wall 12 is formed by bending both ends at right angles by the cuts 13 provided in the insulating member 5. As shown in FIG. 2 (C), the battery header 7 is mounted on the opening of the battery can 2 and the junction between the battery can 2 and the battery header 7 is sealed by welding. The tab 8 connecting the battery element 2 and the electrode lead-out pin 6 can be prevented from being short-circuited by contacting the inner wall surface of the battery can by the partition wall portion 12 extending from the battery header. In the above description, an example in which one tab is joined to the inner wall surface of the battery can is described. However, in the step of joining the tab to the battery header, the tab may be joined to a metal plate of the battery header. FIG. 3 is a view for explaining an example of a battery header before assembling the sealed battery of the present invention. FIG.
FIG. 3A is a side view showing a cross-sectional view of a part of the battery header, and FIG. 3B is a plan view of the battery header viewed from the inside of the battery can. In the battery header 7, the cylindrical portion 5B provided in the insulating member 5 is passed through the through hole 14 provided in the metal plate 4, and the external insulating member 5C is mounted from outside the battery header. Further, the electrode lead-out pin 6 is passed through the through-hole 15 of the cylindrical portion 5A provided in the insulating member 5 so that the internal insulating member 5A
The fixing and sealing are performed by caulking from above the holding plate 16 disposed in contact with the holding plate 16. In addition, the cutout 13 is formed in the insulating member 5 and can be bent along the cutout 13. In the above description, the example in which the insulating member 5 provided on the battery header is constituted by a plurality of members has been described. However, the members on the outer surface side of the battery can and the inner surface side of the battery can of the metal plate 4 are integrally formed. May be used. When the insulating member is integrally formed on the metal plate of the lid portion constituting the header by insert molding or the like, the thickness is reduced as compared with the case where the insulating member is formed of a plurality of members. Therefore, the size of the header can be reduced. Further, the number of header assembling steps can be reduced. As the insulating member, polypropylene or tetrafluoroethylene-perfluoroalkoxyethylene copolymer (PF
A) and thermoplastic fluororesins such as tetrafluoroethylene-hexafluoropropylene copolymer (FEP). In addition, when a metal such as aluminum or an aluminum alloy that forms a corrosion-resistant oxide film on the surface when anodically polarized is used as the electrode lead-out pin, connection by welding lead wires such as nickel and copper for connection is required. Because it is difficult, an electrode extraction plate made of a metal with good bonding characteristics, such as a nickel plate, a nickel-plated mild steel plate, a copper plate, a nickel silver plate, etc., is placed on the metal plate of the battery header. It is preferable to caulk with an electrode lead-out pin. In addition, the electrode drawer plate reduces the contact resistance between the electrode drawer plate and the electrode lead-out pin, and further prevents chemical corrosion due to the electrolytic solution attached to the battery terminals and electrochemical elution and corrosion due to the contact potential difference. It is effective in doing. As the metal to be plated on the electrode lead plate,
Although a noble metal such as gold, silver, tin and the like can be mentioned, it is particularly preferable to use a noble metal such as gold having high corrosion resistance. According to the present invention, there is provided a battery header in which battery terminals having polarities different from those of a battery can are attached by an insulating member.
After joining the tab connected to the battery element to the joint of the battery header, the insulating member attached to the battery header is bent around the joint to prevent the tab from contacting the inner wall of the battery can as a partition wall Therefore, compared to a method in which a partition wall is provided in advance and then a tab is joined, a function of preventing contact between the two can be formed as a reliable partition wall, thereby providing a highly reliable sealed battery. Can be.
【図面の簡単な説明】
【図１】図１は、本発明の密閉型電池を説明する図であ
る。
【図２】図２は、本発明の密閉型電池の製造工程の一例
を説明する図を示す。
【図３】図３は、本発明の密閉型電池の電池に組立前の
電池ヘッダーを説明する図である。
【図４】図４は、角型の密閉型電池の電池ヘッダー部の
構造の説明する図を示す。
【図５】図５は、従来の密閉型電池の製造工程の一例を
説明する図である。
【符号の説明】
１…密閉型電池、２…金属容器、３…電池要素、４…金
属板、５…絶縁性部材、５Ａ…内部絶縁性部材、５Ｂ…
円筒状部、５Ｃ…外部絶縁性部材、６…電極導出ピン、
７…電池ヘッダー、８，９…タブ、１０…絶縁性部材、
１１…スペーサー、１２…区画壁部、１３…切り込み
部、１４…貫通孔、１５…貫通孔、１６…押さえ板BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a sealed battery according to the present invention. FIG. 2 is a diagram illustrating an example of a manufacturing process of the sealed battery of the present invention. FIG. 3 is a diagram illustrating a battery header before assembling into a battery of the sealed battery according to the present invention. FIG. 4 is a view for explaining the structure of a battery header section of a rectangular sealed battery. FIG. 5 is a diagram illustrating an example of a manufacturing process of a conventional sealed battery. [Description of Signs] 1 ... sealed battery, 2 ... metal container, 3 ... battery element, 4 ... metal plate, 5 ... insulating member, 5A ... internal insulating member, 5B ...
Cylindrical portion, 5C: external insulating member, 6: electrode lead-out pin,
7 ... battery header, 8, 9 ... tab, 10 ... insulating member,
DESCRIPTION OF SYMBOLS 11 ... Spacer, 12 ... Partition wall part, 13 ... Notch part, 14 ... Through-hole, 15 ... Through-hole, 16 ... Holding plate
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H022 AA09 BB02 CC02 CC08 CC12 EE06 KK03 5H029 AJ00 CJ01 DJ04 DJ05 EJ12 ────────────────────────────────────────────────── ─── Continuation of front page F-term (reference) 5H022 AA09 BB02 CC02 CC08 CC12 EE06 KK03 5H029 AJ00 CJ01 DJ04 DJ05 EJ12
Claims (1)
絶縁性部材を介して設けた電池ヘッダーを装着した密閉
型電池において、電池要素に接続したタブが電池ヘッダ
ーの金属板に絶縁性部材を介して設けた接合部に接合さ
れていると共に、電池要素に接続したタブと電池缶の内
壁面との間には、電池ヘッダーの金属板に装着した絶縁
性部材を折り曲げて形成した区画壁部が形成されている
ことを特徴とする密閉型電池。Claims: 1. A sealed battery equipped with a battery header provided with battery terminals of a polarity different from that of a battery can via an insulating member, wherein a tab connected to a battery element has a battery header. An insulating member attached to the metal plate of the battery header is connected between the tab connected to the battery element and the inner wall surface of the battery can, while being joined to a joint provided on the metal plate of the battery via an insulating member. A sealed battery characterized in that a partition wall portion formed by bending is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001256075A JP4841076B2 (en) | 2001-08-27 | 2001-08-27 | Sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001256075A JP4841076B2 (en) | 2001-08-27 | 2001-08-27 | Sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003068273A true JP2003068273A (en) | 2003-03-07 |
| JP4841076B2 JP4841076B2 (en) | 2011-12-21 |
Family
ID=19083944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001256075A Expired - Lifetime JP4841076B2 (en) | 2001-08-27 | 2001-08-27 | Sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4841076B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003242957A (en) * | 2002-02-20 | 2003-08-29 | Matsushita Electric Ind Co Ltd | Prismatic battery and its manufacturing method |
| JP2005183332A (en) * | 2003-12-24 | 2005-07-07 | Japan Storage Battery Co Ltd | battery |
| JP2006100097A (en) * | 2004-09-29 | 2006-04-13 | Hitachi Maxell Ltd | Sealed prismatic battery |
| JP2015026663A (en) * | 2013-07-25 | 2015-02-05 | 日立エーアイシー株式会社 | Film capacitor |
| CN104409768A (en) * | 2014-11-25 | 2015-03-11 | 东莞新能源科技有限公司 | Lithium battery |
| US10923703B2 (en) | 2015-11-27 | 2021-02-16 | Kabushiki Kaisha Toyota Jidoshokki | Electricity storage apparatus |
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|---|---|---|---|---|
| JPH0337957A (en) * | 1989-07-04 | 1991-02-19 | Toshiba Battery Co Ltd | Square sealed battery |
| JPH04322072A (en) * | 1991-04-19 | 1992-11-12 | Matsushita Electric Ind Co Ltd | Square small sealed battery |
| JPH07288122A (en) * | 1994-04-19 | 1995-10-31 | A T Battery:Kk | Battery spacer |
| JPH08250104A (en) * | 1995-03-07 | 1996-09-27 | Keihin Rika Kogyo:Kk | Non-aqueous battery |
| JPH0963562A (en) * | 1995-08-30 | 1997-03-07 | Sony Corp | Non-aqueous electrolyte secondary battery |
| JP2000228211A (en) * | 1999-02-04 | 2000-08-15 | Hitachi Maxell Ltd | Sealed battery |
-
2001
- 2001-08-27 JP JP2001256075A patent/JP4841076B2/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0337957A (en) * | 1989-07-04 | 1991-02-19 | Toshiba Battery Co Ltd | Square sealed battery |
| JPH04322072A (en) * | 1991-04-19 | 1992-11-12 | Matsushita Electric Ind Co Ltd | Square small sealed battery |
| JPH07288122A (en) * | 1994-04-19 | 1995-10-31 | A T Battery:Kk | Battery spacer |
| JPH08250104A (en) * | 1995-03-07 | 1996-09-27 | Keihin Rika Kogyo:Kk | Non-aqueous battery |
| JPH0963562A (en) * | 1995-08-30 | 1997-03-07 | Sony Corp | Non-aqueous electrolyte secondary battery |
| JP2000228211A (en) * | 1999-02-04 | 2000-08-15 | Hitachi Maxell Ltd | Sealed battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003242957A (en) * | 2002-02-20 | 2003-08-29 | Matsushita Electric Ind Co Ltd | Prismatic battery and its manufacturing method |
| JP2005183332A (en) * | 2003-12-24 | 2005-07-07 | Japan Storage Battery Co Ltd | battery |
| JP2006100097A (en) * | 2004-09-29 | 2006-04-13 | Hitachi Maxell Ltd | Sealed prismatic battery |
| JP2015026663A (en) * | 2013-07-25 | 2015-02-05 | 日立エーアイシー株式会社 | Film capacitor |
| CN104409768A (en) * | 2014-11-25 | 2015-03-11 | 东莞新能源科技有限公司 | Lithium battery |
| US10923703B2 (en) | 2015-11-27 | 2021-02-16 | Kabushiki Kaisha Toyota Jidoshokki | Electricity storage apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4841076B2 (en) | 2011-12-21 |
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