JPH0118542B2 - - Google Patents
Info
- Publication number
- JPH0118542B2 JPH0118542B2 JP58164745A JP16474583A JPH0118542B2 JP H0118542 B2 JPH0118542 B2 JP H0118542B2 JP 58164745 A JP58164745 A JP 58164745A JP 16474583 A JP16474583 A JP 16474583A JP H0118542 B2 JPH0118542 B2 JP H0118542B2
- Authority
- JP
- Japan
- Prior art keywords
- sealing plate
- electrode terminal
- battery
- outer case
- plate
- 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.)
- Expired
Links
- 238000007789 sealing Methods 0.000 claims description 45
- 238000012856 packing Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic 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)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は外装ケースと封口板とを縁溶接にて封
口してなる密閉形電池に関し、特に封口板に設け
られる電極端子部の取付構造に関する。[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a sealed battery formed by sealing an outer case and a sealing plate by edge welding, and particularly relates to a mounting structure for an electrode terminal portion provided on the sealing plate. Regarding.
(ロ) 従来技術
第１図は従来の密閉形電池の断面図であり、第
２図は従来の他の密閉形電池の要部断面図であ
る。従来の密閉形電池をこれらの図面を用い以下
に説明する。(b) Prior Art FIG. 1 is a cross-sectional view of a conventional sealed battery, and FIG. 2 is a cross-sectional view of a main part of another conventional sealed battery. A conventional sealed battery will be explained below using these drawings.
従来の密閉電池は一般に第１図に示す如く、陽
極板１と陰極板２との間にセパレータ３を介して
渦巻状に巻回してなる発電素体を円筒状金属製外
装ケース４に挿入し、電解液の注入等を行なつた
後、外装ケース４の開口部をシーム加工し、この
開口部をかしめることにより、安全弁付電極端子
部６と外装ケース４の間に樹脂製の絶縁パツキン
グ５を介して封口されている。このような封口方
法は通常メカニカル樹脂シールと呼ばれ、外装ケ
ースと電極端子との電気的絶縁と密封効果を有
し、円筒形状の電池では殆んどこの方法による密
封が行なわれている。 As shown in FIG. 1, a conventional sealed battery generally has a power generation element formed by spirally wound anode plate 1 and cathode plate 2 with a separator 3 interposed between them, and inserted into a cylindrical metal exterior case 4. After injecting the electrolyte, etc., the opening of the outer case 4 is seamed and this opening is caulked, thereby creating a resin insulating packing between the electrode terminal section 6 with safety valve and the outer case 4. It is sealed through 5. Such a sealing method is usually called a mechanical resin seal, and has the effect of electrically insulating and sealing the outer case and the electrode terminals, and this method is used for most cylindrical batteries.
しかしながら、第１図に示す密閉形電池は外装
ケースのシーム加工部分と外装ケースの開口縁の
間に電極端子部をパツキングを介して固定するこ
とにより封口しているため、電極端子部下面とパ
ツキングの密着性及び外装ケースのシーム加工部
分とパツキングの密着性が悪く、電解液の耐漏液
性が良好であるとは言えず、また、外装ケースの
シーム加工部分より下に発電素体が位置するた
め、電池内の余剰空間が広く、高容量の電池を得
ることはできない。更にこの封口方法では非真円
筒形状の電池、例えば長円筒、楕円筒、四角筒の
ような形状の電池の封口は外装ケースのシーム加
工が塑性学的に困難であるため用いることができ
ない。 However, the sealed battery shown in Figure 1 is sealed by fixing the electrode terminal part between the seam part of the outer case and the opening edge of the outer case through packing, so the lower surface of the electrode terminal and the packing The adhesion between the seam part of the outer case and the packing is poor, and the leakage resistance of the electrolyte cannot be said to be good.Also, the power generating element is located below the seam part of the outer case. Therefore, there is a large surplus space inside the battery, making it impossible to obtain a high-capacity battery. Furthermore, this sealing method cannot be used to seal batteries with a non-true cylindrical shape, such as batteries with shapes such as long cylinders, elliptical cylinders, or square cylinders, because seaming of the outer case is plastically difficult.
上記問題点を解決するものとして第２図に示す
様な密閉形電池が提案されている。この密閉形電
池は封口板７の中央透孔部に絶縁パツキング８を
介して電極端子６′を挿入し、電極端子下部の円
筒部材をワツシヤー９を介して外側にかしめる事
で電気的絶縁と密封効果を持たせ、封口板７と外
装ケース４′の端部同志をレーザーシーム溶接や
ガスアーク溶接等で縁溶接して封口されるもので
あり、シーム加工を要しないため発電要素を収納
する空間が広く高容量の電池が得られ、また非真
円筒形状の電池にも適用することができる。 A sealed battery as shown in FIG. 2 has been proposed to solve the above problems. In this sealed battery, the electrode terminal 6' is inserted into the center hole of the sealing plate 7 through the insulating packing 8, and the cylindrical member at the bottom of the electrode terminal is caulked outward through the washer 9 to provide electrical insulation. To provide a sealing effect, the ends of the sealing plate 7 and the outer case 4' are sealed by edge welding using laser seam welding, gas arc welding, etc., and since no seam processing is required, the space for housing the power generation element is A battery with a wide range of characteristics and a high capacity can be obtained, and it can also be applied to batteries with a non-true cylindrical shape.
ところが、第２図に示される密閉形電池に於い
ても、陽極端子部に安全弁を設けることが困
難、絶縁パツキングの締めつけが不十分なため
密封性が悪く電解液の漏れ現象が発生することが
ある等の欠点がある。 However, even in the sealed battery shown in Figure 2, it is difficult to provide a safety valve at the anode terminal, and the insulating packing is insufficiently tightened, resulting in poor sealing and electrolyte leakage. There are some drawbacks.
(ハ) 発明の目的
本発明はかかる点に鑑み耐漏液性が向上し、且
つ安全弁を電極端子部に設けることが可能であ
り、非真円筒形状の電池にも適用可能な密閉形電
池を提供せしめんとするものである。(c) Purpose of the Invention In view of the above, the present invention provides a sealed battery that has improved leakage resistance, can be provided with a safety valve at the electrode terminal, and is applicable to non-true cylindrical batteries. This is something that we are trying to encourage.
(ニ) 発明の構成
本発明の密閉形電池は、外装ケースと、封口板
と、環状押圧板と、絶縁パツキングと、他極性電
極端子部とを有する密閉形電池であつて、前記外
装ケースは、金属からなり、開口部を有し、一極
性電極端子部を兼ねており、前記封口板は、金属
からなり、透孔が中央部に形設されており、前記
環状押圧板は、金属からなり、リング形状であ
り、前記環状押圧板は、前記封口板の透孔を囲む
ように配置され、外周部側が、前記封口板に溶接
されており、前記他極性電極端子部は、外縁部が
前記絶縁パツキングを介して、前記環状押圧板と
前記封口板の透孔の周縁部とで挾持されており、
前記外装ケースの前記開口部は、封口板で閉塞さ
れ、前記外装ケースと封口板の外周縁部とが縁溶
接されていることを特徴とするものである。(d) Structure of the Invention The sealed battery of the present invention is a sealed battery having an outer case, a sealing plate, an annular pressing plate, an insulating packing, and a different polarity electrode terminal portion, wherein the outer case is The sealing plate is made of metal and has an opening and serves as a unipolar electrode terminal, the sealing plate is made of metal and has a through hole formed in the center, and the annular pressing plate is made of metal and has an opening. The annular pressing plate is arranged to surround the through hole of the sealing plate, the outer peripheral side is welded to the sealing plate, and the other polarity electrode terminal part has an outer edge. is held between the annular pressing plate and the peripheral edge of the through hole of the sealing plate via the insulating packing,
The opening of the exterior case is closed with a sealing plate, and the exterior case and the outer peripheral edge of the sealing plate are edge welded.
(ホ) 実施例
本発明の一実施例を図面を用いて以下に説明す
る。第３図は本発明電池の要部断面図、第４図
Ａ，Ｂ及び第５図Ａ，Ｂは本発明電池の電極端子
部の取付方法を示す説明図である。(E) Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 is a sectional view of a main part of the battery of the present invention, and FIGS. 4A and 4B and FIGS. 5A and 5B are explanatory diagrams showing a method of attaching the electrode terminal portion of the battery of the present invention.
第３図及び第４図に於いて、７′は中央に透孔
を有し且つ該透孔周縁に凹部を有する封口板であ
り、該封口板７′の凹部に安全弁付陽極端子部
６″が絶縁パツキング５′を介して載置され、次い
で断面Ｌ字形の環状押圧板１０が封口板７′の凹
部の周囲に抵抗溶接やレーザー溶接によつて固着
される。この後前記押圧板１０はプレス金型Ｐ，
Ｄによつて第４図Ｂに示される様に内方にかしめ
られ、絶縁パツキング５′を強く押圧して陽極端
子部６″を挾持する。こうして作成された陽極端
子部６″を固定した封口板７′は陰極端子兼用の外
装ケース４″と、その端部ａ同志を縁溶接して完
成電池となる。 In FIGS. 3 and 4, 7' is a sealing plate that has a through hole in the center and a recess around the hole, and an anode terminal portion 6'' with a safety valve is provided in the recess of the sealing plate 7'. is placed through the insulating packing 5', and then an annular pressing plate 10 having an L-shaped cross section is fixed around the concave portion of the sealing plate 7' by resistance welding or laser welding. Press mold P,
D is caulked inward as shown in FIG. 4B, and the insulating packing 5' is strongly pressed to clamp the anode terminal part 6''. The plate 7' is joined to the outer case 4'', which also serves as a cathode terminal, and its ends a are welded together to form a completed battery.
こうして作成された本発明電池と第１図に示す
従来電池とを比較すると、本発明電池は封口板と
外装ケースとを溶接する前に封口板に電極単子部
を取り付けるため、プレスによるかしめに於いて
充分に加圧することができ、また従来電池の様に
パツキングを外装ケースのシーム部に載置してか
しめるものに比し、電極端子部の下面に当接する
パツキング及び封口板を比較的多くとれるため電
極端子部の封口板の取り付けは確実であり密封効
果が高く、封口板７′と外装ケース４″とを縁溶接
によつて接続しているため、封口板と外装ケース
の間からの電解液の漏液もない。また、従来電池
の様にシーム加工を必要としないため、非真円筒
形状の電池であつても容易に封口することができ
る。 Comparing the battery of the present invention produced in this way with the conventional battery shown in Fig. 1, it is found that the battery of the present invention does not have to be crimped by pressing because the electrode single part is attached to the sealing plate before welding the sealing plate and the outer case. It can apply sufficient pressure, and compared to conventional batteries where the packing is placed on the seam of the outer case and caulked, the packing and sealing plate that come into contact with the bottom surface of the electrode terminal are relatively small. Since the sealing plate can be attached to the electrode terminal part securely and has a high sealing effect, the sealing plate 7' and the outer case 4'' are connected by edge welding, so that the sealing plate can be easily attached to the electrode terminal part. There is no electrolyte leakage.Furthermore, unlike conventional batteries, there is no need for seam processing, so even batteries with a non-perfect cylindrical shape can be easily sealed.
次に本発明電池と第２図に示す電池とを比較す
ると、第２図に示す電池は電極端子下部を直接か
しめて封口板に取り付けているので電極端子部に
安全弁機能を付加することが困難であるのに対
し、本発明電池は電極端子部に容易に安全弁機能
を付加できるため安全である。 Next, when comparing the battery of the present invention and the battery shown in Figure 2, it is found that in the battery shown in Figure 2, the lower part of the electrode terminal is directly caulked and attached to the sealing plate, so it is difficult to add a safety valve function to the electrode terminal part. In contrast, the battery of the present invention is safe because a safety valve function can be easily added to the electrode terminal portion.
尚、本発明は前述の実施例により限定されるも
のではなく、第３図に示す押圧板１０は電池の内
部側になる様組み立てても良く、第５図に示す封
口板への電極端子の取付方法の様にプレス等によ
り内方にかしめられる部材が封口板７″であつて
もその効果は同様である。 Note that the present invention is not limited to the above-described embodiments, and the pressing plate 10 shown in FIG. 3 may be assembled so as to be on the inside of the battery, and the electrode terminals may be attached to the sealing plate shown in FIG. 5. Even if the member to be caulked inward by a press or the like is the sealing plate 7'' as in the attachment method, the effect is the same.
また、前記押圧板に平面状のものあるいは封口
板７′に対応する凹所を有するものを用い、この
押圧板をパツキング５′の上方より押圧してその
周縁を封口板に密着させ、この状態を維持して前
記密着部分を溶接することにより電極端子を封口
板に固定しても良い。 Alternatively, the press plate may be flat or have a recess corresponding to the sealing plate 7', and the press plate may be pressed from above the packing 5' so that its periphery is brought into close contact with the sealing plate. The electrode terminal may be fixed to the sealing plate by welding the close contact portion while maintaining the following.
(ヘ) 発明の効果
本発明の密閉形電池は、金属性の外装ケースと
封口板とを縁溶接にて封口するものに於いて、前
記封口板に溶接された環状押圧板の孔縁と封口板
に設けられた透孔の孔縁との間に絶縁パツキング
を介して電極端子部を挾持するものであるから、
電極端子部に安全弁を設けることができると共に
耐漏液性が向上し、また、長円筒、楕円筒、四角
筒等の非真円筒状の電池にも容易に適用し得る密
閉形電池を提供することができる。(F) Effects of the Invention In the sealed battery of the present invention, in which a metal outer case and a sealing plate are sealed by edge welding, the hole edge and the sealing plate of the annular pressing plate welded to the sealing plate are sealed. Since the electrode terminal part is sandwiched between the hole edge of the through hole provided in the plate through the insulating packing,
To provide a sealed battery in which a safety valve can be provided at an electrode terminal part, the leakage resistance is improved, and the battery can be easily applied to non-true cylindrical batteries such as long cylinders, elliptical cylinders, square cylinders, etc. Can be done.
第１図は従来電池の断面図、第２図及び第３図
は従来電池及び本発明電池の要部断面図、第４図
Ａ，Ｂ及び第５図Ａ，Ｂは本発明電池に於ける電
極端子部の取付方法を示す説明図である。
４，４′，４″……外装ケース、７，７′……封
口板、６，６′，６″……電極端子部、１０……環
状押圧板、５，５′，８……絶縁パツキング。
Fig. 1 is a sectional view of a conventional battery, Figs. 2 and 3 are sectional views of main parts of a conventional battery and a battery of the present invention, and Figs. 4A, B and 5 A, B are sectional views of a battery of the present invention. It is an explanatory view showing a method of attaching an electrode terminal part. 4, 4', 4''... Exterior case, 7, 7'... Sealing plate, 6, 6', 6''... Electrode terminal section, 10... Annular pressing plate, 5, 5', 8... Insulation Patsuking.
Claims (1)
１０と、絶縁パツキング５′と、他極性電極端子
部６″とを有する密閉形電池であつて、 前記外装ケース４″は、金属からなり、開口部
を有し、一極性電極端子部を兼ねており、 前記封口板７′は、金属からなり、透孔が中央
部に形設されており、 前記環状押圧板１０は、金属からなり、リング
形状であり、 前記環状押圧板１０は、前記封口板７′の透孔
を囲むように配置され、外周部側が、前記封口板
７′に溶接されており、 前記他極性電極端子部６″は、外縁部が前記絶
縁パツキング５′を介して、前記環状押圧板１０
と前記封口板７′の透孔の周縁部とで挾持されて
おり、 前記外装ケース４″の前記開口部は、封口板
７′で閉塞され、前記外装ケース４″と封口板７′
の外周縁部とが縁溶接されていることを特徴とす
る密閉形電池。 ２ 前記他極性電極端子部６″は、安全弁機能を
有することを特徴とする特許請求の範囲第１項記
載の密閉形電池。[Scope of Claims] 1. A sealed battery comprising an outer case 4'', a sealing plate 7', an annular pressing plate 10, an insulating packing 5', and an opposite polarity electrode terminal section 6'', wherein the outer case comprises: The case 4'' is made of metal and has an opening, which also serves as a unipolar electrode terminal. The sealing plate 7' is made of metal and has a through hole formed in the center. The pressing plate 10 is made of metal and has a ring shape. The annular pressing plate 10 is arranged so as to surround the through hole of the sealing plate 7', and the outer peripheral side is welded to the sealing plate 7'. , the outer edge of the other polarity electrode terminal portion 6'' is connected to the annular pressing plate 10 via the insulating packing 5'.
and the peripheral edge of the through hole of the sealing plate 7', and the opening of the outer case 4'' is closed by the sealing plate 7', and the outer case 4'' and the sealing plate 7'
A sealed battery characterized in that the outer peripheral edge of the battery is edge-welded. 2. The sealed battery according to claim 1, wherein the other polarity electrode terminal portion 6'' has a safety valve function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58164745A JPS6056363A (en) | 1983-09-06 | 1983-09-06 | Sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58164745A JPS6056363A (en) | 1983-09-06 | 1983-09-06 | Sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6056363A JPS6056363A (en) | 1985-04-01 |
| JPH0118542B2 true JPH0118542B2 (en) | 1989-04-06 |
Family
ID=15799101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58164745A Granted JPS6056363A (en) | 1983-09-06 | 1983-09-06 | Sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6056363A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257097B (en) * | 2007-03-02 | 2012-03-14 | 深圳市比克电池有限公司 | Improved battery seal component and battery |
| CN101257098B (en) * | 2007-03-02 | 2012-01-25 | 深圳市比克电池有限公司 | Battery and battery seal component convenient for assembling |
| CN105789492A (en) * | 2014-12-23 | 2016-07-20 | 比亚迪股份有限公司 | Battery shell, preparation method of battery shell, battery, battery pack and electric car |
-
1983
- 1983-09-06 JP JP58164745A patent/JPS6056363A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6056363A (en) | 1985-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4304919B2 (en) | battery | |
| JPWO2015059826A1 (en) | Prismatic secondary battery | |
| JPH0346754A (en) | Battery | |
| US3866095A (en) | Plastic encased component with reflowed-plastic sealed leads | |
| JP2000138055A (en) | Nonaqueous electrolyte battery | |
| JP2012238473A (en) | Sealed battery, battery pack, and manufacturing method of sealed battery | |
| JPH0118542B2 (en) | ||
| US3457118A (en) | Storage battery terminal connectors | |
| JPH08203494A (en) | Dry battery | |
| US20040258989A1 (en) | Secondary battery having safety valve and method of manufacturing same | |
| JPH10154490A (en) | Negative electrode lead of battery | |
| US20230402727A1 (en) | Cylindrical battery | |
| JPH11354091A (en) | Battery and its manufacture | |
| JP4576641B2 (en) | Battery manufacturing method | |
| JP3309277B2 (en) | Cased capacitor with security mechanism and method of manufacturing the same | |
| JP4168592B2 (en) | Secondary battery and method for manufacturing secondary battery | |
| JPH0556622B2 (en) | ||
| JPH0132676Y2 (en) | ||
| JPH06203823A (en) | Battery | |
| JPS635177Y2 (en) | ||
| JP2911898B2 (en) | Battery manufacturing method | |
| JPS6223426B2 (en) | ||
| JP2970442B2 (en) | Explosion-proof sealing plate for thin batteries | |
| JPH0425008A (en) | Energy reserving device | |
| WO2021014705A1 (en) | Prismatic secondary battery |