JPH11204089A - Explosion-proof sealing apparatus for secondary battery - Google Patents
Explosion-proof sealing apparatus for secondary batteryInfo
- Publication number
- JPH11204089A JPH11204089A JP10007285A JP728598A JPH11204089A JP H11204089 A JPH11204089 A JP H11204089A JP 10007285 A JP10007285 A JP 10007285A JP 728598 A JP728598 A JP 728598A JP H11204089 A JPH11204089 A JP H11204089A
- Authority
- JP
- Japan
- Prior art keywords
- cap
- shaped terminal
- explosion
- sealing device
- secondary 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.)
- 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)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、二次電池用防爆封
口装置に関するものであり、生産工程における不良低減
および二次電池のパック構成時の不良低減をする技術に
属するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an explosion-proof sealing device for a secondary battery, and more particularly to a technique for reducing a defect in a production process and a defect in forming a pack of a secondary battery.
【０００２】[0002]
【従来の技術】近年、ＡＶ機器，パソコン等の機器のコ
ードレス化，ポータブル化に伴い、その駆動用電源とし
て小型，軽量で、高エネルギー密度の電池が求められて
いる。特に、リチウムイオン二次電池は高エネルギー密
度を有する電池であり、次世代電池の主力として大いに
期待され、その潜在的市場規模も大きい。2. Description of the Related Art In recent years, as devices such as AV devices and personal computers have become cordless and portable, a small-sized, light-weight, high-energy-density battery is required as a power source for driving the devices. In particular, a lithium ion secondary battery is a battery having a high energy density, is greatly expected as a mainstay of next-generation batteries, and has a large potential market scale.
【０００３】このリチウムイオン二次電池用防爆封口装
置の前記キャップ状端子には、従来表面が平滑で凹凸が
Ｒａ＝０．３μｍ以下である材料（以下、ブライト材と
いう）が用いられてきた。A material having a smooth surface and irregularities of Ra = 0.3 μm or less (hereinafter, referred to as a bright material) has conventionally been used for the cap-shaped terminal of the explosion-proof sealing device for a lithium ion secondary battery.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の構成では、第一の課題としてパック構成の際に、前
記キャップ状端子と接続板とのリードスポット溶接不良
が多発するという欠点を有していた。また、第二の課題
として高所からの落下等の衝撃やヒートサイクル等の熱
的衝撃が加わった時、前記キャップ状端子とＰＴＣ素子
との間に空隙が発生し、電池の内部抵抗が増大し、電池
性能を著しく低下させるという欠点を有していた。However, the conventional structure described above has a first problem that in the case of a pack structure, lead spot welding defects between the cap-shaped terminal and the connection plate occur frequently. Was. As a second problem, when a shock such as a drop from a high place or a thermal shock such as a heat cycle is applied, a gap is generated between the cap-shaped terminal and the PTC element, and the internal resistance of the battery increases. However, there is a disadvantage that the battery performance is significantly reduced.
【０００５】本発明は、このような従来の課題を解決す
るものであり、パック構成の際に、確実に前記キャップ
状端子と接続板とがリードスポット溶接され、不良を低
減し、かつ内部抵抗の増大が抑制された二次電池用防爆
封口装置を提供することを目的とするものである。The present invention solves such a conventional problem. When a pack is formed, the cap-shaped terminal and the connection plate are reliably lead-spot-welded to reduce defects and reduce internal resistance. It is an object of the present invention to provide an explosion-proof sealing device for a secondary battery in which an increase in the number is suppressed.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めに本発明の二次電池用防爆封口装置は、前記キャップ
状端子を表面がＲａ＝０．５〜１．０μｍの凹凸処理さ
れた材料を用いて構成したものである。In order to solve the above-mentioned problems, in the explosion-proof sealing device for a secondary battery according to the present invention, the surface of the cap-shaped terminal is processed to have an irregularity of Ra = 0.5 to 1.0 μm. It is configured using materials.
【０００７】上記構成によって、前記キャップ状端子に
リードスポット溶接を行うと前記キャップ状端子表面に
おける接触抵抗は、従来の表面が平滑なブライト材を用
いた場合に比べ、増大する。このことにより、スポット
溶接される接続板とキャップ状端子に発生するジュール
熱が増加し、前記キャップ状端子と接続板とのリードス
ポット溶接を、より強固かつ確実に行うことができる。
さらに、前記キャップ状端子の凹凸が従来と比べ、大き
いことからＰＴＣ素子に凹凸部が深く食い込むことによ
り、キャップ状端子とＰＴＣ素子の密着度は高くなる。With the above configuration, when lead spot welding is performed on the cap-shaped terminal, the contact resistance on the surface of the cap-shaped terminal is increased as compared with a conventional case using a bright material having a smooth surface. As a result, Joule heat generated in the connection plate and the cap-shaped terminal to be spot-welded is increased, and lead spot welding between the cap-shaped terminal and the connection plate can be performed more firmly and reliably.
Further, since the unevenness of the cap-shaped terminal is larger than that of the related art, the degree of adhesion between the cap-shaped terminal and the PTC element is increased due to the fact that the unevenness bites into the PTC element.
【０００８】[0008]
【発明の実施の形態】本発明は、請求項１記載のように
正極板と負極板をセパレーターを介して巻回して構成し
た極板群と、電解液を収納した電槽を封口する封口装置
であって、前記封口装置はキャップ状端子，ＰＴＣ素
子，防爆弁体および絶縁インナーガスケットを金属ケー
スに収納して、かしめて一体になっており、しかも前記
キャップ状端子は表面がＲａ＝０．５〜１．０μｍの凹
凸処理された材料により構成して二次電池用防爆封口装
置とすることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to a sealing device for sealing an electrode group formed by winding a positive electrode plate and a negative electrode plate via a separator as described in claim 1, and a battery case containing an electrolytic solution. In the sealing device, a cap-shaped terminal, a PTC element, an explosion-proof valve body and an insulating inner gasket are housed in a metal case and are caulked and integrated, and the surface of the cap-shaped terminal has Ra = 0. An explosion-proof sealing device for a secondary battery can be made of a material having a roughness of 5 to 1.0 μm.
【０００９】以上の構成とすることで、前記キャップ状
端子にリードスポット溶接を行うと前記キャップ状端子
表面における接触抵抗は、従来の表面が平滑なブライト
材を用いた場合に比べ、増大する。このことにより、ス
ポット溶接される接続板とキャップ状端子に発生するジ
ュール熱が増加し、前記キャップ状端子と接続板とのリ
ードスポット溶接を、より強固かつ確実に行うことがで
きる。さらに、前記キャップ状端子の凹凸が従来と比べ
大きいことから前記ＰＴＣ素子に凹凸部が深く食い込
み、キャップ状端子とＰＴＣ素子の密着度は高くなる。
これにより、落下試験やヒートサイクル試験を行った際
の電池の内部抵抗の増大が抑制される。[0009] With the above configuration, when lead spot welding is performed on the cap-shaped terminal, the contact resistance on the surface of the cap-shaped terminal is increased as compared with a conventional case using a bright material having a smooth surface. As a result, Joule heat generated in the connection plate and the cap-shaped terminal to be spot-welded is increased, and lead spot welding between the cap-shaped terminal and the connection plate can be performed more firmly and reliably. Further, since the unevenness of the cap-shaped terminal is larger than that of the conventional one, the uneven portion is deeply penetrated into the PTC element, and the degree of adhesion between the cap-shaped terminal and the PTC element is increased.
This suppresses an increase in internal resistance of the battery when a drop test or a heat cycle test is performed.
【００１０】なお、キャップ状端子の表面の凹凸がＲａ
＝０．５μｍ以下であると、凹凸が小さいため効果があ
まり見られず、Ｒａ＝１．０μｍ以上であると、凹凸が
大きすぎるためＰＴＣ素子との接触が保てなくなる。こ
のことから、表面の凹凸はＲａ＝０．５〜１．０μｍに
すると良い。The surface of the cap-shaped terminal has a roughness Ra.
If it is not more than 0.5 μm, the effect is not so much seen because the unevenness is small, and if it is more than 1.0 μm, the contact with the PTC element cannot be maintained because the unevenness is too large. For this reason, the surface irregularities should preferably be Ra = 0.5 to 1.0 μm.
【００１１】[0011]
【実施例】（実施例１）図１は、本発明の実施例１にお
ける二次電池用防爆封口装置の断面図を示す。図１に示
すように、本実施例１の封口装置のキャップ状端子１は
表面がＲａ＝０．５〜１．０μｍの凹凸処理されたもの
であり、ＰＴＣ素子２と、薄肉部を有する弁体３と、ガ
ス排出口を有する導電性金属板４と、弁体３と導電性金
属板４の間に配設されて開口部を有する絶縁ガスケット
５を備えている。そして、弁体３の一部と導電性金属板
４の一部を絶縁ガスケット５の開口部内で溶着し、絶縁
ガスケット５と接触する弁体３の上面を、弁体３と導電
性金属板４との溶着部６より上方に位置させるととも
に、弁体３を山部３ａを有する波状にして、電池内圧が
所定の圧力値に達すると、弁体３が上方に反転し、弁体
３と導電性金属板４との電気的接続を遮断する構造を有
している。なお、７は金属ケースを示す。(Embodiment 1) FIG. 1 is a sectional view of an explosion-proof sealing device for a secondary battery according to Embodiment 1 of the present invention. As shown in FIG. 1, the cap-shaped terminal 1 of the sealing device of the first embodiment has a surface whose surface is subjected to an unevenness treatment with Ra = 0.5 to 1.0 μm, and has a PTC element 2 and a valve having a thin portion. The valve includes a body 3, a conductive metal plate 4 having a gas outlet, and an insulating gasket 5 disposed between the valve body 3 and the conductive metal plate 4 and having an opening. Then, a part of the valve body 3 and a part of the conductive metal plate 4 are welded in the opening of the insulating gasket 5, and the upper surface of the valve body 3 in contact with the insulating gasket 5 is placed on the valve body 3 and the conductive metal plate 4. When the internal pressure of the battery reaches a predetermined pressure value, the valve body 3 is turned over and the valve body 3 is electrically connected to the valve body 3. It has a structure for interrupting electrical connection with the conductive metal plate 4. Reference numeral 7 denotes a metal case.
【００１２】（実施例２）図２は、本発明の実施例２に
おける二次電池用防爆封口装置の断面図を示す。図２に
示すように、実施例１で用いた弁体３の山部３ａをなく
し、谷部３ｂをＰＴＣ素子２の底面と弁体３との接触面
よりも下方に位置させる。Embodiment 2 FIG. 2 is a sectional view of an explosion-proof sealing device for a secondary battery according to Embodiment 2 of the present invention. As shown in FIG. 2, the peaks 3 a of the valve body 3 used in the first embodiment are eliminated, and the valleys 3 b are located below the contact surface between the bottom surface of the PTC element 2 and the valve body 3.
【００１３】（実施例３）図３は、本発明の実施例３に
おける二次電池用防爆封口装置の断面図を示す。図３に
示すように、実施例１で用いた弁体３の山部３ａ，谷部
３ｂが設けられていない構造とする。(Embodiment 3) FIG. 3 is a sectional view of an explosion-proof sealing device for a secondary battery according to Embodiment 3 of the present invention. As shown in FIG. 3, the valve body 3 used in the first embodiment has a structure in which the peaks 3 a and the valleys 3 b are not provided.
【００１４】以下に、本発明の実施例による二次電池用
防爆封口装置と、キャップ状端子にブライト材を使用し
た従来の二次電池用防爆封口装置との性能を比較して示
す。The performance of an explosion-proof sealing device for a secondary battery according to an embodiment of the present invention and a conventional explosion-proof sealing device for a secondary battery using a bright material for a cap-shaped terminal will be compared.
【００１５】本発明の防爆封口装置は、開口部を有する
絶縁ガスケット５の上部に配設される弁体３の底面と導
電性金属板４とが、絶縁ガスケット５の開口部内で溶着
部６により電気的に接続されている。絶縁ガスケット５
と、弁体３と、弁体３の上部に配設されるＰＴＣ素子２
と、ＰＴＣ素子２の上部に配設されるキャップ状端子１
と凹凸段差部を設けた導電性金属板４は、開口部を有す
る金属ケース７に収納され、かしめ封口されている。In the explosion-proof sealing device of the present invention, the bottom surface of the valve body 3 disposed above the insulating gasket 5 having the opening and the conductive metal plate 4 are welded by the welding portion 6 in the opening of the insulating gasket 5. It is electrically connected. Insulating gasket 5
, A valve element 3, and a PTC element 2 disposed above the valve element 3
And a cap-like terminal 1 disposed on the upper part of the PTC element 2
The conductive metal plate 4 provided with the concave and convex steps is housed in a metal case 7 having an opening, and is closed by caulking.
【００１６】電槽内部には、金属箔集電体にＬｉＣｏＯ
2 を主成分とするペーストを塗布，乾燥し短冊状に切断
した正極板と、カーボンをペースト状にして金属箔集電
体に塗布，乾燥し短冊状に切断した負極板とを、フィル
ム状セパレーターを介して巻回した発電要素を内蔵し、
電槽開口部に、絶縁性樹脂からなるガスケットを介し
て、前記防爆封口装置はかしめ封口される。本発明の防
爆封口装置は成分組成が、Ｃが０．１２％以下、Ｓｉが
０．７５％以下、Ｍｎが１．００％以下、Ｐが０．０４
０％以下、Ｓが０．０３０％以下、Ｃｒが１６．００〜
１８．００％であるＳＵＳを用い、キャップ状端子１に
表面がＲａ＝０．５〜１．０μｍの凹凸処理された材料
（以下、ダル材という）を用いた。[0016] Inside the battery case, a LiCoO
A positive electrode plate coated with a paste containing 2 as a main component, dried and cut into strips, and a negative electrode plate coated with carbon as a paste and applied to a metal foil current collector, dried and cut into strips, are separated into film separators. Built-in power generation element wound through
The explosion-proof sealing device is swaged and sealed at the battery case opening via a gasket made of insulating resin. The explosion-proof sealing device of the present invention has a component composition of 0.12% or less of C, 0.75% or less of Si, 1.00% or less of Mn, and 0.04% of P.
0% or less, S is 0.030% or less, Cr is 16.00 to
SUS of 18.00% was used, and the cap-shaped terminal 1 was made of a material having a surface with a surface roughness Ra of 0.5 to 1.0 μm (hereinafter referred to as a dull material).
【００１７】また、従来例にはキャップ状端子に実施例
と同様のＳＵＳを用い、表面の凹凸がＲａ＝０．３μｍ
以下の平滑なブライト材を用いた。In the conventional example, the same SUS as that of the embodiment is used for the cap-shaped terminal, and the surface irregularities are Ra = 0.3 μm.
The following smooth bright material was used.
【００１８】以上のように構成された本発明の防爆封口
装置と従来例の防爆封口装置について、パック構成時の
キャップ状端子とＮｉ，Ａｌ，Ｆｅ等を材料とする接続
板のリードスポット溶接不良の割合により評価を行い、
その結果を表１に示す。With respect to the explosion-proof sealing device of the present invention and the conventional explosion-proof sealing device configured as described above, defective lead spot welding of the cap-shaped terminal and the connection plate made of Ni, Al, Fe, etc. in the pack configuration. Is evaluated by the ratio of
Table 1 shows the results.
【００１９】[0019]
【表１】 [Table 1]
【００２０】表１の結果から、キャップ状端子に表面が
平滑なブライト材を用いた従来例には、キャップ状端子
と接続板とのリードスポット溶接不良は０．８％発生し
ていたのに対して、キャップ状端子１に表面が凹凸処理
されたダル材を用いた本発明の実施例では、全く溶接不
良は発生しなかった。From the results in Table 1, it can be seen that in the conventional example in which a bright material having a smooth surface is used for the cap-shaped terminal, the lead spot welding defect between the cap-shaped terminal and the connection plate was 0.8%. On the other hand, in the example of the present invention in which the dull material whose surface was roughened was used for the cap-shaped terminal 1, no poor welding occurred.
【００２１】また、上記構成の本発明の実施例の防爆封
口装置と従来例の防爆封口装置を用いて電池を組み、５
回の落下試験と、１０〜６０℃で１週間のヒートサイク
ル試験を行い、電池の内部抵抗を測定し、落下試験とヒ
ートサイクル試験前後の変化を調べ、その評価の結果を
表２，表３に示す。A battery is assembled by using the explosion-proof sealing device of the embodiment of the present invention having the above-described structure and the conventional explosion-proof sealing device.
The drop test and the heat cycle test at 10 to 60 ° C. for one week were performed, the internal resistance of the battery was measured, the changes before and after the drop test and the heat cycle test were examined, and the evaluation results were shown in Tables 2 and 3. Shown in
【００２２】[0022]
【表２】 [Table 2]
【００２３】[0023]
【表３】 [Table 3]
【００２４】表２の結果から、キャップ状端子に表面が
平滑なブライト材を用いた従来例に比べて、キャップ状
端子に表面が凹凸処理されたダル材を用いた本実施例
は、落下試験前後での内部抵抗は、本発明の実施例が
０．０３ｍΩの増加、従来例が０．８９ｍΩの増加で、
本発明の実施例のキャップ状端子が従来例のキャップ状
端子に比較して内部抵抗の増加が小さかった。From the results in Table 2, it can be seen that the present embodiment using the dull material whose surface is unevenly treated for the cap-shaped terminal shows a drop test compared to the conventional example using the bright material having a smooth surface for the cap-shaped terminal. The internal resistance between before and after was increased by 0.03 mΩ in the embodiment of the present invention and increased by 0.89 mΩ in the conventional example.
The increase in the internal resistance of the cap-shaped terminal of the example of the present invention was smaller than that of the cap-shaped terminal of the conventional example.
【００２５】また、表３の結果から、従来例ではヒート
サイクル試験後に電池の内部抵抗が増大するものが１０
０個中３４個あったが、本実施例においては電池の内部
抵抗が増大する電池はなかった。From the results shown in Table 3, it can be seen from the results that in the prior art, the internal resistance of the battery increased after the heat cycle test.
There were 34 batteries out of 0, but in this example, there was no battery whose internal resistance increased.
【００２６】以上の結果から、キャップ状端子に表面が
凹凸処理されたダル材を用いることにより、パック構成
時のリードスポット溶接の向上と落下試験やヒートサイ
クル試験での内部抵抗の増大の抑制が見られた。From the above results, it is possible to improve the lead spot welding at the time of forming the pack and to suppress the increase in the internal resistance in the drop test and the heat cycle test by using the dull material whose surface is made uneven for the cap-shaped terminal. Was seen.
【００２７】なお、本実施例において、キャップ状端子
の材質は成分組成が、Ｃが０．１２％以下、Ｓｉが０．
７５％以下、Ｍｎが１．００％以下、Ｐが０．０４０％
以下、Ｓが０．０３０％以下、Ｃｒが１６．００〜１
８．００％であるＳＵＳのダル材としたが、鉄のダル材
でも同様の結果が得られる。In this embodiment, the material of the cap-shaped terminal has a component composition of 0.12% or less of C and 0.1% of Si.
75% or less, Mn is 1.00% or less, P is 0.040%
Hereinafter, S is 0.030% or less, and Cr is 16.000 to 1
Although a SUS dull material of 8.00% was used, a similar result can be obtained with an iron dull material.
【００２８】[0028]
【発明の効果】以上のように本発明は、キャップ状端子
の材質を表面が凹凸処理されたダル材とすることによ
り、キャップ状端子と接続板とのリードスポット溶接を
確実に行うことができ、またキャップ状端子とＰＴＣ素
子の密着度が高い優れた二次電池用防爆封口装置を実現
できるものである。As described above, according to the present invention, the lead-spot welding between the cap-shaped terminal and the connection plate can be reliably performed by using the material of the cap-shaped terminal as a dull material whose surface is unevenly treated. Further, an excellent explosion-proof sealing device for a secondary battery having a high degree of adhesion between the cap-shaped terminal and the PTC element can be realized.
【図１】本発明の実施例１における二次電池用防爆封口
装置の断面図FIG. 1 is a sectional view of an explosion-proof sealing device for a secondary battery according to a first embodiment of the present invention.
【図２】本発明の実施例２における二次電池用防爆封口
装置の断面図FIG. 2 is a sectional view of an explosion-proof sealing device for a secondary battery according to a second embodiment of the present invention.
【図３】本発明の実施例３における二次電池用防爆封口
装置の断面図FIG. 3 is a sectional view of an explosion-proof sealing device for a secondary battery according to a third embodiment of the present invention.
１ キャップ状端子 ２ ＰＴＣ素子 ３ 弁体 ３ａ 山部 ３ｂ 谷部 ４ 導電性金属板 ５ 絶縁ガスケット ６ 溶着部 ７ 金属ケース DESCRIPTION OF SYMBOLS 1 Cap-shaped terminal 2 PTC element 3 Valve body 3a Peak part 3b Valley part 4 Conductive metal plate 5 Insulating gasket 6 Welding part 7 Metal case
フロントページの続き (72)発明者 粟野 彰規 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Continued on the front page (72) Inventor Akinori Awano 1006 Kazuma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.
Claims (1)
巻回して構成した極板群と、電解液を収納した電槽を封
口する封口装置であって、前記封口装置はキャップ状端
子，ＰＴＣ素子，防爆弁体および絶縁インナーガスケッ
トを金属ケースに収納して、かしめて一体になってお
り、しかも前記キャップ状端子は表面がＲａ＝０．５〜
１．０μｍの凹凸処理された材料により構成されたもの
であることを特徴とする二次電池用防爆封口装置。1. A sealing device for sealing an electrode group formed by winding a positive electrode plate and a negative electrode plate via a separator, and a battery case containing an electrolyte, wherein the sealing device comprises a cap-shaped terminal, a PTC The element, the explosion-proof valve body and the insulating inner gasket are housed in a metal case and are caulked and integrated, and the surface of the cap-shaped terminal has Ra = 0.5 to
An explosion-proof sealing device for a secondary battery, which is made of a material that has been subjected to a 1.0 μm unevenness treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00728598A JP3879220B2 (en) | 1998-01-19 | 1998-01-19 | Explosion-proof sealing device for secondary batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00728598A JP3879220B2 (en) | 1998-01-19 | 1998-01-19 | Explosion-proof sealing device for secondary batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11204089A true JPH11204089A (en) | 1999-07-30 |
| JP3879220B2 JP3879220B2 (en) | 2007-02-07 |
Family
ID=11661776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00728598A Expired - Fee Related JP3879220B2 (en) | 1998-01-19 | 1998-01-19 | Explosion-proof sealing device for secondary batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3879220B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005149862A (en) * | 2003-11-14 | 2005-06-09 | Shin Kobe Electric Mach Co Ltd | Sealed battery |
| US7432010B2 (en) | 2003-09-17 | 2008-10-07 | Sony Corporation | Battery |
| US9660247B2 (en) | 2011-11-23 | 2017-05-23 | Toyota Jidosha Kabushiki Kaisha | Secondary battery manufacturing method and secondary battery |
| CN106784440A (en) * | 2017-01-04 | 2017-05-31 | 国轩新能源（苏州）有限公司 | Cylindrical battery elastic press type block |
| CN106969980A (en) * | 2017-03-08 | 2017-07-21 | 北京新能源汽车股份有限公司 | Battery anti-explosion test system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60858U (en) * | 1983-06-16 | 1985-01-07 | 松下電器産業株式会社 | Button battery |
| JPS6247945A (en) * | 1985-08-26 | 1987-03-02 | Matsushita Electric Ind Co Ltd | Cell |
| JPH06314563A (en) * | 1993-04-30 | 1994-11-08 | Toyo Kohan Co Ltd | Battery |
-
1998
- 1998-01-19 JP JP00728598A patent/JP3879220B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60858U (en) * | 1983-06-16 | 1985-01-07 | 松下電器産業株式会社 | Button battery |
| JPS6247945A (en) * | 1985-08-26 | 1987-03-02 | Matsushita Electric Ind Co Ltd | Cell |
| JPH06314563A (en) * | 1993-04-30 | 1994-11-08 | Toyo Kohan Co Ltd | Battery |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7432010B2 (en) | 2003-09-17 | 2008-10-07 | Sony Corporation | Battery |
| JP2005149862A (en) * | 2003-11-14 | 2005-06-09 | Shin Kobe Electric Mach Co Ltd | Sealed battery |
| JP4590856B2 (en) * | 2003-11-14 | 2010-12-01 | 新神戸電機株式会社 | Sealed battery |
| US9660247B2 (en) | 2011-11-23 | 2017-05-23 | Toyota Jidosha Kabushiki Kaisha | Secondary battery manufacturing method and secondary battery |
| CN106784440A (en) * | 2017-01-04 | 2017-05-31 | 国轩新能源（苏州）有限公司 | Cylindrical battery elastic press type block |
| CN106784440B (en) * | 2017-01-04 | 2021-11-19 | 上海电气国轩新能源科技(苏州)有限公司 | Cylinder battery spring type cap |
| CN106969980A (en) * | 2017-03-08 | 2017-07-21 | 北京新能源汽车股份有限公司 | Battery anti-explosion test system |
| CN106969980B (en) * | 2017-03-08 | 2019-09-03 | 北京新能源汽车股份有限公司 | Battery anti-explosion valve test system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3879220B2 (en) | 2007-02-07 |
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