JP2003257387A - Secondary battery and its manufacturing method - Google Patents
Secondary battery and its manufacturing methodInfo
- Publication number
- JP2003257387A JP2003257387A JP2002056408A JP2002056408A JP2003257387A JP 2003257387 A JP2003257387 A JP 2003257387A JP 2002056408 A JP2002056408 A JP 2002056408A JP 2002056408 A JP2002056408 A JP 2002056408A JP 2003257387 A JP2003257387 A JP 2003257387A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- positive electrode
- lead
- electrode lead
- outer case
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000010248 power generation Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 16
- 239000008151 electrolyte solution Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はポリマー電池等の二
次電池及びその製造方法に関する。TECHNICAL FIELD The present invention relates to a secondary battery such as a polymer battery and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】ポリマー電池は、図５に示す如く、外装
ケース１内に正極板３とセパレータ４と負極板５をこの
順に積層した発電要素２を収容し、複数枚の正極板３の
各一端に設けた正極タブ３Ａが接続された正極リード６
と、複数枚の負極板５の各一端に設けた負極タブ５Ａ
（不図示）が接続された負極リード７（不図示）を外装
ケース１から外部に引き出し、外装ケース１の内部に電
解液を封入して構成される。2. Description of the Related Art As shown in FIG. 5, a polymer battery accommodates a power generating element 2 in which a positive electrode plate 3, a separator 4 and a negative electrode plate 5 are stacked in this order in an outer case 1, and each of a plurality of positive electrode plates 3 is accommodated. Positive electrode lead 6 to which positive electrode tab 3A provided at one end is connected
And a negative electrode tab 5A provided at one end of each of the plurality of negative electrode plates 5.
A negative electrode lead 7 (not shown) to which (not shown) is connected is pulled out from the outer case 1, and an electrolytic solution is sealed inside the outer case 1.
【０００３】また、外装ケース１からの電解液の漏出を
防止するため、正極リードと負極リード７を外装ケース
１のシール部８から外部に引き出し、それらの正極リー
ド６と負極リード７のそれぞれに設けたリードフィルム
９により上記シール部８を封止する。リードフィルム９
は、外装ケース１にもリード６（７）にも容易に接着す
る材料から構成される。Further, in order to prevent the electrolyte solution from leaking from the outer case 1, the positive electrode lead and the negative electrode lead 7 are pulled out from the sealing portion 8 of the outer case 1 to the positive electrode lead 6 and the negative electrode lead 7, respectively. The seal portion 8 is sealed by the provided lead film 9. Lead film 9
Is made of a material that easily adheres to the outer case 1 and the leads 6 (7).
【０００４】また、外装ケース１の外形寸法の短尺化を
図るため、正極リード６と各正極タブ３Ａを折り曲げ、
正極リード６と各正極タブ３Ａの接続点を外装ケース１
内の一側に納めるとともに、負極リード７と各負極タブ
５Ａを折り曲げ、負極リード７と各負極タブ５Ａの接続
点を外装ケース１内の一端に納めることとしている。In order to reduce the outer dimensions of the outer case 1, the positive electrode lead 6 and each positive electrode tab 3A are bent,
Connect the connection point between the positive electrode lead 6 and each positive electrode tab 3A to the outer case 1.
The outer case 1 is housed in one side, the negative electrode lead 7 and each negative electrode tab 5A are bent, and the connection point between the negative electrode lead 7 and each negative electrode tab 5A is housed in one end of the outer case 1.
【０００５】[0005]
【発明が解決しようとする課題】従来技術では、セパレ
ータ４の外縁を正極板３や負極板５の端部の外側にまで
はみ出るように設けて正極板３や負極板５の端部を覆
い、正極板３の端部が負極タブ５Ａや負極リード７に接
してショートしたり、負極板５の端部が正極タブ３Ａや
正極リード６に接してショートすることをセパレータ４
の介在により防止しようとしている。In the prior art, the outer edge of the separator 4 is provided so as to extend outside the end of the positive electrode plate 3 or the negative electrode plate 5 to cover the end of the positive electrode plate 3 or the negative electrode plate 5, The separator 4 may be configured such that the end portion of the positive electrode plate 3 is in contact with the negative electrode tab 5A or the negative electrode lead 7 and short-circuited, or the end portion of the negative electrode plate 5 is in contact with the positive electrode tab 3A or the positive electrode lead 6 and short-circuited.
I am trying to prevent it by the intervention of.
【０００６】特に、最外層の正極板３又は負極板５を除
く正極板３又は負極板５にあっては、例えば図５の最上
層の負極板５を除く負極板５にみられるように、隣接す
る正極板３の正極タブ３Ａが前述の如く正極リード６と
ともに折り曲げられるときに、該正極タブ３Ａとともに
折り込まれるセパレータ４の外縁がそれら負極板５の端
部を確実に覆い続けるように該正極タブ３Ａのバックア
ップを受け、結果としてそれら負極板５の端部が外装ケ
ース１内における遊びにより正極タブ３Ａや正極リード
６の側に自由に突き出てショートすることを防止してい
る。Particularly, in the positive electrode plate 3 or the negative electrode plate 5 excluding the positive electrode plate 3 or the negative electrode plate 5 of the outermost layer, as seen in, for example, the negative electrode plate 5 excluding the negative electrode plate 5 of the uppermost layer, When the positive electrode tabs 3A of the adjacent positive electrode plates 3 are bent together with the positive electrode lead 6 as described above, the positive electrode tabs 3A are folded together with the positive electrode tabs 3A so that the outer edges of the separators 4 surely cover the end portions of the negative electrode plates 5. The tabs 3A are backed up, and as a result, the ends of the negative electrode plates 5 are prevented from freely protruding toward the positive electrode tabs 3A and the positive electrode leads 6 due to play in the outer case 1 to cause a short circuit.
【０００７】しかしながら、最外層の正極板３又は負極
板５にあっては、例えば図５の最上層の負極板５にみら
れるように、当該負極板５の端部を確実に覆い続けるよ
うに、より上層の正極タブ３Ａによりバックアップされ
る如くのセパレータ４の存在がなく、結果として当該負
極板５の端部は外装ケース１内の遊びにより正極リード
６の側に自由に突き出てショートする虞がある。However, in the outermost positive electrode plate 3 or negative electrode plate 5, for example, as shown in the uppermost negative electrode plate 5 in FIG. 5, the end portion of the negative electrode plate 5 should be surely covered. There is no separator 4 to be backed up by the positive electrode tab 3A in the upper layer, and as a result, the end portion of the negative electrode plate 5 may freely protrude toward the positive electrode lead 6 side due to the play in the outer case 1 to cause a short circuit. There is.
【０００８】本発明の課題は、二次電池において、正極
板と負極リードのショートや、負極板と正極リードのシ
ョートを簡易に防止することにある。An object of the present invention is to easily prevent a short circuit between a positive electrode plate and a negative electrode lead and a short circuit between a negative electrode plate and a positive electrode lead in a secondary battery.
【０００９】[0009]
【課題を解決するための手段】請求項１の発明は、外装
ケース内に正極板とセパレータと負極板をこの順に積層
した発電要素を収容し、正極板の一端が接続された正極
リードと負極板の一端が接続された負極リードを外装ケ
ースから外部に引き出してなる二次電池において、正極
リードの外装ケース内に位置する部分の表面に負極板に
対する絶縁フィルムを貼るとともに、負極リードの外装
ケース内に位置する部分の表面に正極板に対する絶縁フ
ィルムを貼るようにしたものである。According to a first aspect of the present invention, there is provided a positive electrode lead and a negative electrode in which a positive electrode plate, a separator, and a negative electrode plate are housed in this order in a power generation element, and one end of the positive electrode plate is connected. In a secondary battery in which a negative electrode lead to which one end of the plate is connected is pulled out from the outer case, an insulating film for the negative electrode plate is attached to the surface of the portion of the positive electrode lead located inside the outer case, and the outer case of the negative electrode lead is also attached. An insulating film for the positive electrode plate is attached to the surface of the portion located inside.
【００１０】請求項２の発明は、請求項１の発明におい
て更に、前記正極リードと負極リードのそれぞれが外装
ケースのシール部から外部に引き出され、それらの正極
リードと負極リードのそれぞれに貼ったリードフィルム
により上記シール部を封止するに際し、各リードフィル
ムの延長部分を前記絶縁フィルムとしてなるようにした
ものである。According to a second aspect of the present invention, in addition to the first aspect of the present invention, each of the positive electrode lead and the negative electrode lead is drawn out from a seal portion of an outer case and is attached to each of the positive electrode lead and the negative electrode lead. When the sealing portion is sealed with a lead film, the extended portion of each lead film serves as the insulating film.
【００１１】請求項３の発明は、請求項１の発明におい
て更に、前記正極リードに複数枚の正極板の各一端に設
けた正極タブを接続するとともに、負極リードに複数枚
の負極板の各一端に設けた負極タブを接続し、正極リー
ドと各正極タブの接続点を外装ケース内で前記発電要素
の積層方向の一側に納めるようにそれらの正極リードと
各正極タブを折り曲げるに際し、正極リードの発電要素
に臨む側の表面に前記絶縁フィルムを貼り、負極リード
と各負極タブの接続点を外装ケース内で前記発電要素の
積層方向の一側に納めるようにそれらの負極リードと各
負極タブを折り曲げるに際し、負極リードの発電要素に
臨む側の表面に前記絶縁フィルムを貼るようにしたもの
である。According to a third aspect of the present invention, in addition to the first aspect of the invention, a positive electrode tab provided at one end of each of the plurality of positive electrode plates is connected to the positive electrode lead, and each of the plurality of negative electrode plates is connected to the negative electrode lead. When the negative electrode tab provided at one end is connected and the positive electrode lead and each positive electrode tab are bent so that the connection point between the positive electrode lead and each positive electrode tab is housed on one side in the stacking direction of the power generating element in the outer case, the positive electrode The insulating film is attached to the surface of the lead facing the power generating element, and the negative electrode lead and each negative electrode are arranged so that the connection point between the negative electrode lead and each negative electrode tab is housed on one side in the stacking direction of the power generating element in the outer case. When the tab is bent, the insulating film is attached to the surface of the negative electrode lead facing the power generation element.
【００１２】請求項４の発明は、請求項３の発明におい
て更に、前記正極リードと負極リードのそれぞれが外装
ケースのシール部から外部に引き出され、それらの正極
リードと負極リードのそれぞれの上下の両表面に貼った
リードフィルムにより上記シール部を封止するに際し、
正極リードと負極リードのそれぞれの上下の一方の表面
に貼ったリードフィルムの延長部分を前記絶縁フィルム
としてなるようにしたものである。According to a fourth aspect of the present invention, in addition to the third aspect of the present invention, the positive electrode lead and the negative electrode lead are respectively pulled out from the sealing portion of the outer case, and the upper and lower portions of the positive electrode lead and the negative electrode lead are respectively removed. When sealing the seal part with the lead films attached to both surfaces,
The extended portions of the lead films attached to the upper and lower surfaces of each of the positive electrode lead and the negative electrode lead serve as the insulating film.
【００１３】請求項５の発明は、外装ケース内に正極板
とセパレータと負極板をこの順に積層した発電要素を収
容し、正極板の一端が接続された正極リードと負極板の
一端が接続された負極リードを外装ケースとの間に形成
されるシール部から外部に引き出してなる二次電池の製
造方法において、正極板とセパレータと負極板を積層し
て発電要素を作成する工程と、発電要素を構成する正極
板の一端に正極リードを接続するとともに、負極板の一
端に負極リードを接続する工程と、正極リードと負極リ
ードの外装ケースのシール部を通過する部分の表面にリ
ードフィルムを貼る工程と、正極リードと負極リードの
外装ケース内に位置する部分の表面に絶縁フィルムを貼
る工程と、外装ケース内に発電要素を収容し、正極リー
ドと負極リードを外装ケースのシール部から外部に引き
出した状態で封止する工程とを有してなるようにしたも
のである。According to a fifth aspect of the present invention, a power generating element in which a positive electrode plate, a separator and a negative electrode plate are laminated in this order is housed in an outer case, and one end of the positive electrode plate is connected to one end of the positive electrode lead. In a method of manufacturing a secondary battery, in which a negative electrode lead is drawn to the outside from a seal portion formed between an outer case and a positive electrode plate, a separator and a negative electrode plate are laminated to form a power generating element, The step of connecting the positive electrode lead to one end of the positive electrode plate that constitutes the above, and the step of connecting the negative electrode lead to one end of the negative electrode plate, and sticking the lead film on the surface of the portion passing through the seal part of the outer case of the positive electrode lead and the negative electrode lead Steps, a step of attaching an insulating film to the surfaces of the portions of the positive electrode lead and the negative electrode lead that are located in the outer case, and a power generating element is housed in the outer case to separate the positive electrode lead and the negative electrode lead. Is obtained by the so and a step of sealing in a pulled out to the outside from the seal portion of the instrumentation case.
【００１４】請求項６の発明は、請求項５の発明におい
て更に、前記絶縁フィルムとしてリードフィルムの延長
部分を用いるようにしたものである。According to a sixth aspect of the present invention, in addition to the fifth aspect of the invention, an extended portion of the lead film is used as the insulating film.
【００１５】[0015]
【作用】外装ケース内の最外層の負極板（又は正極
板）が、正極リード（又は負極リード）の側に突き出て
も、正極リード（又は負極リード）に貼付の絶縁フィル
ムにより、負極板（又は正極板）と正極リード（又は負
極リード）のショートを防止する。[Effect] Even if the outermost negative electrode plate (or positive electrode plate) in the outer case projects toward the positive electrode lead (or negative electrode lead) side, the insulating film attached to the positive electrode lead (or negative electrode lead) causes the negative electrode plate ( Alternatively, the short circuit between the positive electrode plate) and the positive electrode lead (or the negative electrode lead) is prevented.
【００１６】外装ケースのシール部を封止するために
正極リードと負極リードのそれぞれに貼ったリードフィ
ルムの延長部分を、上述の絶縁フィルムとして用いる
ものであり、簡素化できる。The extension portions of the lead films attached to the positive electrode lead and the negative electrode lead for sealing the seal portion of the outer case are used as the above-mentioned insulating film, and can be simplified.
【００１７】[0017]
【発明の実施の形態】図１はポリマー電池を示す断面
図、図２は発電要素を示す断面図、図３は発電要素の製
造工程図、図４は外装ケースへの発電要素の収容工程を
示す斜視図である。1 is a sectional view showing a polymer battery, FIG. 2 is a sectional view showing a power generating element, FIG. 3 is a manufacturing process drawing of the power generating element, and FIG. 4 is a process of accommodating the power generating element in an outer case. It is a perspective view shown.
【００１８】ポリマー電池１０は、図１に示す如く、ア
ルミラミネートフィルム等からなる外装ケース１１内に
正極板２１とセパレータ２２と負極板２３をこの順に積
層した発電要素２０（図２）を収容し、複数枚の正極板
２１の各一端に設けた正極タブ２１Ａが接続された正極
リード２４と、複数枚の負極板２３の各一端に設けた負
極タブ２３Ａ（不図示）が接続された負極リード２５を
外装ケース１１から外部に引き出し、外装ケース１１の
内部には電解液を封入して構成される。As shown in FIG. 1, the polymer battery 10 contains a power generation element 20 (FIG. 2) in which a positive electrode plate 21, a separator 22 and a negative electrode plate 23 are laminated in this order inside an outer case 11 made of an aluminum laminate film or the like. , A positive electrode lead 24 connected to a positive electrode tab 21A provided at each end of a plurality of positive electrode plates 21 and a negative electrode lead connected to a negative electrode tab 23A (not shown) provided at each end of a plurality of negative electrode plates 23 25 is drawn out from the outer case 11, and the outer case 11 is filled with an electrolytic solution.
【００１９】尚、外装ケース１１は、ケース本体１２と
カバー１３からなり、ケース本体１１に設けた凹部１４
に発電要素２０と電解液を収容する。The outer case 11 comprises a case body 12 and a cover 13, and a recess 14 formed in the case body 11.
The power generating element 20 and the electrolytic solution are housed in.
【００２０】ポリマー電池１０は、外装ケース１１から
の電解液の漏出を防止するため、正極リード２４と負極
リード２５を外装ケース１１のシール部１５（ケース本
体１２のフランジ１２Ａとカバー１３の挟着部）から外
部に引き出し、正極リード２４の上下の両表面に貼った
リードフィルム３１Ａ、３１Ｂと、負極リード２５の上
下の両表面に貼ったリードフィルム３２Ａ、３２Ｂ（不
図示）により上記シール部１５を封止する。リードフィ
ルム３１Ａ、３１Ｂ、３２Ａ、３２Ｂは、外装ケース１
１にもリード２４、２５にも容易に接着する材料から構
成される。In the polymer battery 10, in order to prevent the electrolyte solution from leaking from the outer case 11, the positive electrode lead 24 and the negative electrode lead 25 are attached to the seal portion 15 of the outer case 11 (the flange 12A of the case body 12 and the cover 13 are sandwiched. Part)) and the lead films 31A and 31B attached to both the upper and lower surfaces of the positive electrode lead 24 and the lead films 32A and 32B (not shown) attached to the upper and lower surfaces of the negative electrode lead 25. Is sealed. The lead films 31A, 31B, 32A, 32B are the outer case 1
It is made of a material that easily adheres to both the lead 1 and the leads 24 and 25.
【００２１】ポリマー電池１０は、外装ケース１１の外
形寸法を正極リード２４、負極リード２５に沿う方向で
短尺化するため、正極リード２４と各正極タブ２１Ａを
外装ケース１１の底部寄りに折り曲げ、正極リード２４
と各正極タブ２１Ａの接続点を外装ケース１１の凹部１
４の底部側に納めるとともに、負極リード２５と各負極
タブ２３Ａを外装ケース１１の底部寄りに折り曲げ、負
極リード２５と各負極タブ２３Ａの接続点を外装ケース
１１の凹部１４の底部側に納める。In the polymer battery 10, in order to reduce the outer dimension of the outer case 11 in the direction along the positive electrode lead 24 and the negative electrode lead 25, the positive electrode lead 24 and each positive electrode tab 21A are bent toward the bottom of the outer case 11 to form a positive electrode. Lead 24
And the connection point of each positive electrode tab 21A with the recess 1 of the outer case 11.
4, the negative electrode lead 25 and each negative electrode tab 23A are bent toward the bottom of the outer case 11, and the connection point between the negative electrode lead 25 and each negative electrode tab 23A is placed on the bottom side of the recess 14 of the outer case 11.
【００２２】ここで、ポリマー電池１０は、セパレータ
２２の外縁を正極板２１や負極板２３の端部の外側にま
ではみ出るように設けて正極板２１や負極板２３の端部
を覆い、正極板２１の端部が負極タブ２３Ａや負極リー
ド２５に接してショートしたり、負極板２３の端部が正
極タブ２１Ａや正極リード２４に接してショートするこ
とをセパレータ２２の介在により防止している。しかる
に、ポリマー電池１０にあっては、正極板２１と負極リ
ード２５のショートや、負極板２３と正極リード２４の
ショートをより確実に防止するため、以下の構成を有す
る。Here, in the polymer battery 10, the outer edge of the separator 22 is provided so as to protrude to the outside of the end of the positive electrode plate 21 or the negative electrode plate 23 to cover the end of the positive electrode plate 21 or the negative electrode plate 23, and the positive electrode plate The separator 22 prevents the end of 21 from coming into contact with the negative electrode tab 23A and the negative electrode lead 25 to cause a short circuit, and the end of the negative electrode plate 23 from coming into contact with the positive electrode tab 21A and the positive electrode lead 24 to cause a short circuit. However, the polymer battery 10 has the following configuration in order to prevent a short circuit between the positive electrode plate 21 and the negative electrode lead 25 and a short circuit between the negative electrode plate 23 and the positive electrode lead 24 more reliably.
【００２３】ポリマー電池１０は、正極リード２４の外
装ケース１１内に位置する部分の表面に負極板２３に対
する絶縁フィルム４１を貼る。このとき、正極リード２
４は前述の如くに折り曲げられており、正極リード２４
の発電要素２０（負極板２３）に臨む上側の表面に絶縁
フィルム４１を貼る。また、正極リード２４の上側の表
面に貼った前記リードフィルム３１Ａの外装ケース１１
内への延長部分を絶縁フィルム４１として用いる。In the polymer battery 10, the insulating film 41 for the negative electrode plate 23 is attached to the surface of the portion of the positive electrode lead 24 located inside the outer case 11. At this time, the positive electrode lead 2
4 is bent as described above, and the positive electrode lead 24
The insulating film 41 is attached to the upper surface facing the power generation element 20 (negative electrode plate 23). Further, the outer case 11 of the lead film 31A attached to the upper surface of the positive electrode lead 24.
The extended portion is used as the insulating film 41.
【００２４】ポリマー電池１０は、負極リード２５の外
装ケース１１内に位置する部分の表面に正極板２１に対
する絶縁フィルム４２を貼る。このとき、負極リード２
５は前述の如くに折り曲げられており、負極リード２５
の発電要素２０（正極板２１）に臨む上側の表面に絶縁
フィルム４２を貼る。また、負極リード２５の上側の表
面に貼った前記リードフィルム３２Ａの外装ケース１１
内への延長部分を絶縁フィルム４２として用いる。In the polymer battery 10, the insulating film 42 for the positive electrode plate 21 is attached to the surface of the portion of the negative electrode lead 25 located inside the outer case 11. At this time, the negative electrode lead 2
5 is bent as described above, and the negative electrode lead 25
The insulating film 42 is attached to the upper surface of the power generating element 20 (positive electrode plate 21) facing the above. In addition, the outer case 11 of the lead film 32A attached to the upper surface of the negative electrode lead 25.
The extending portion is used as the insulating film 42.
【００２５】従ってポリマー電池１０の製造手順は以下
の如くなされる。
(1)正極板２１とセパレータ２２と負極板２３を積層し
て発電要素２０を作成する（図３（Ａ））。Therefore, the procedure for manufacturing the polymer battery 10 is as follows. (1) The positive electrode plate 21, the separator 22, and the negative electrode plate 23 are laminated to form the power generation element 20 (FIG. 3A).
【００２６】(2)各正極板２１の正極タブ２１Ａを発電
要素２０の下層側にて重ねるように各正極タブ２１Ａを
曲げ成形し、かつ各正極タブ２１Ａの先端をトリミング
する（図３（Ｂ）、（Ｃ））。同時に、各負極板２３の
負極タブ２３Ａを発電要素２０の下層側にて重ねるよう
に各負極タブ２３Ａを曲げ成形し、かつ各負極タブ２３
Ａの先端をトリミングする。(2) Each positive electrode tab 21A of each positive electrode plate 21 is bent and formed such that the positive electrode tabs 21A overlap with each other on the lower layer side of the power generating element 20, and the tip of each positive electrode tab 21A is trimmed (see FIG. ), (C)). At the same time, the respective negative electrode tabs 23A are bent and formed so that the negative electrode tabs 23A of the respective negative electrode plates 23 are superposed on the lower layer side of the power generating element 20, and the respective negative electrode tabs 23 are also formed.
Trim the tip of A.
【００２７】(3)各正極タブ２１Ａに正極リード２４を
超音波溶接する（図３（Ｄ））。同時に各負極タブ２３
Ａに負極リード２５を超音波溶接する。(3) The positive electrode lead 24 is ultrasonically welded to each positive electrode tab 21A (FIG. 3 (D)). At the same time, each negative electrode tab 23
The negative electrode lead 25 is ultrasonically welded to A.
【００２８】(4)正極リード２４と負極リード２５の外
装ケース１１のシール部１５を通過する部分の上下の表
面にリードフィルム３１Ａ、３１Ｂとリードフィルム３
２Ａ、３２Ｂを溶着して貼る。このとき、正極リード２
４と負極リード２５の外装ケース１１内に位置する部分
の上側の表面には、リードフィルム３１Ａ、３２Ａの延
長部分である絶縁フィルム４１、４２を貼る（図３
（Ｅ））。(4) The lead films 31A and 31B and the lead film 3 are formed on the upper and lower surfaces of the portions of the positive electrode lead 24 and the negative electrode lead 25 that pass through the seal portion 15 of the outer case 11.
Weld 2A and 32B together and stick. At this time, the positive electrode lead 2
Insulating films 41 and 42, which are extended portions of the lead films 31A and 32A, are attached to the upper surfaces of the portions of the negative electrode lead 25 and the negative lead 25 which are located inside the outer case 11 (FIG. 3).
(E)).
【００２９】(5)正極リード２４と各正極タブ２１Ａの
接続点を外装ケース１１内で発電要素２０の積層方向の
一側（外装ケース１１の凹部１４の底部側）に納めるよ
うにそれらの正極リード２４と各正極タブ２１Ａを折り
曲げ、かつ正極リード２４の先端をトリミングする（図
３（Ｆ））。同時に、負極リード２５と各負極タブ２３
Ａの接続点を外装ケース１１内で発電要素２０の積層方
向の一側（外装ケース１１の凹部１４の底部側）に納め
るようにそれらの負極リード２５と各負極タブ２３Ａを
折り曲げ、かつ負極リード２５の先端をトリミングす
る。(5) The positive electrode lead 24 and the respective positive electrode tabs 21A are connected so that the connection point thereof is located inside the outer case 11 on one side in the stacking direction of the power generating element 20 (bottom side of the recess 14 of the outer case 11). The lead 24 and each positive electrode tab 21A are bent, and the tip of the positive electrode lead 24 is trimmed (FIG. 3 (F)). At the same time, the negative electrode lead 25 and each negative electrode tab 23
The negative electrode lead 25 and each negative electrode tab 23A are bent so that the connection point A is housed in the outer casing 11 on one side in the stacking direction of the power generating element 20 (bottom side of the recess 14 of the outer casing 11), and the negative electrode lead is formed. Trim the tip of 25.
【００３０】(6)外装ケース１１内に発電要素２０を収
容し、正極リード２４と負極リード２５を外装ケース１
１のシール部１５から外部に引き出した状態で、このシ
ール部１５をリードフィルム３１Ａ、３１Ｂとリードフ
ィルム３２Ａ、３２Ｂにより封止するとともに、外装ケ
ース１１内に電解液を封入する（図４）。(6) The power generating element 20 is housed in the outer case 11, and the positive electrode lead 24 and the negative electrode lead 25 are attached to the outer case 1.
While being pulled out from the seal portion 15 of No. 1, the seal portion 15 is sealed by the lead films 31A and 31B and the lead films 32A and 32B, and the electrolytic solution is sealed in the outer case 11 (FIG. 4).
【００３１】本実施形態によれば、以下の作用がある。
外装ケース１１内の最外層の正極板２１、負極板２３
にあっては、例えば図１の最上層の負極板２３にみられ
るように、当該負極板２３が正極リード２４の側に突き
出ても、正極リード２４に貼付の絶縁フィルム４１によ
り、負極板２３と正極リード２４のショートを防止す
る。According to this embodiment, there are the following effects. The outermost positive electrode plate 21 and negative electrode plate 23 in the outer case 11
In this case, even if the negative electrode plate 23 protrudes toward the positive electrode lead 24 side as seen in, for example, the uppermost negative electrode plate 23 in FIG. 1, the negative electrode plate 23 is attached by the insulating film 41 attached to the positive electrode lead 24. And short circuit of the positive electrode lead 24 is prevented.
【００３２】外装ケース１１内の最外層の正極板２１
又は負極板２３を除く正極板２１又は負極板２３にあっ
ては、例えば図１の最上層の負極板２３を除く負極板２
３にみられるように、隣接する正極板２１の正極タブ２
１Ａが前述の如く正極リード２４とともに折り曲げられ
るときに、該正極タブ２１Ａとともに折り込まれるセパ
レータ２２の外縁がそれら負極板２３の端部を確実に覆
い続けるように該正極タブ２１Ａのバックアップを受
け、結果としてそれら負極板２３の端部が外装ケース１
１内における遊びにより正極タブ２１Ａや正極リード２
４の側に自由に突き出てショートすることを防止する。The outermost positive electrode plate 21 in the outer case 11
Alternatively, in the positive electrode plate 21 or the negative electrode plate 23 excluding the negative electrode plate 23, for example, the negative electrode plate 2 excluding the uppermost negative electrode plate 23 in FIG.
3, the positive electrode tabs 2 of the adjacent positive electrode plates 21
When 1A is bent together with the positive electrode lead 24 as described above, the positive edge of the positive electrode tab 21A is backed up so that the outer edge of the separator 22 folded together with the positive electrode tab 21A surely continues to cover the ends of the negative electrode plates 23. The ends of the negative electrode plates 23 are the outer case 1 as
Depending on the play in 1, the positive electrode tab 21A and the positive electrode lead 2
Prevents short circuit by sticking out to the side of 4.
【００３３】外装ケース１１のシール部１５を封止す
るために正極リード２４に貼ったリードフィルム３１Ａ
の延長部分を上述の絶縁フィルム４１として用いるも
のであり、簡素化できる。また、負極リード２５に貼っ
たリードフィルム３２Ａの延長部分も絶縁フィルム４２
として用いるものであり、簡素化できる。A lead film 31A attached to the positive electrode lead 24 for sealing the seal portion 15 of the outer case 11.
The extended portion of is used as the above-mentioned insulating film 41 and can be simplified. Further, the extension portion of the lead film 32A attached to the negative electrode lead 25 is also the insulating film 42.
And can be simplified.
【００３４】以上、本発明の実施の形態を図面により詳
述したが、本発明の具体的な構成はこの実施の形態に限
られるものではなく、本発明の要旨を逸脱しない範囲の
設計の変更等があっても本発明に含まれる。例えば、絶
縁フィルムは正極リードと負極リードのそれぞれの上下
の両表面を覆うものでも良い。The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed without departing from the gist of the present invention. Etc. are included in the present invention. For example, the insulating film may cover the upper and lower surfaces of the positive electrode lead and the negative electrode lead, respectively.
【００３５】また、絶縁フィルムは、正極リードと負極
リードの外装ケースに対するシール部を封止するための
リードフィルムと別体であっても良い。The insulating film may be a separate body from the lead film for sealing the sealing portion of the positive electrode lead and the negative electrode lead with respect to the outer case.
【００３６】また、二次電池の例としてポリマー電池に
適用した例を説明したが、正極板、セパレータ、負極板
が積層されて発電要素となす他の二次電池、例えばリチ
ウムイオン電池にも適用できる。Further, although the example applied to the polymer battery has been described as an example of the secondary battery, the present invention is also applied to another secondary battery in which a positive electrode plate, a separator and a negative electrode plate are laminated to form a power generating element, for example, a lithium ion battery. it can.
【００３７】[0037]
【発明の効果】以上のように本発明によれば、二次電池
において、正極板と負極リードのショートや、負極板と
正極リードのショートを簡易に防止することができる。As described above, according to the present invention, it is possible to easily prevent a short circuit between the positive electrode plate and the negative electrode lead and a short circuit between the negative electrode plate and the positive electrode lead in the secondary battery.
【図１】図１はポリマー電池を示す断面図である。FIG. 1 is a cross-sectional view showing a polymer battery.
【図２】図２は発電要素を示す断面図である。FIG. 2 is a cross-sectional view showing a power generation element.
【図３】図３は発電要素の製造工程図である。FIG. 3 is a manufacturing process diagram of a power generation element.
【図４】図４は外装ケースへの発電要素の収容工程を示
す斜視図である。FIG. 4 is a perspective view showing a step of accommodating a power generation element in an outer case.
【図５】図５は従来例を示す断面図である。FIG. 5 is a cross-sectional view showing a conventional example.
１０ ポリマー電池 １１ 外装ケース ２０ 発電要素 ２１ 正極板 ２２ セパレータ ２３ 負極板 ２４ 正極リード ２５ 負極リード ３１Ａ、３１Ｂ、３２Ａ、３２Ｂ リードフィルム ４１、４２ 絶縁フィルム 10 Polymer battery 11 exterior case 20 power generation elements 21 Positive plate 22 Separator 23 Negative electrode plate 24 Positive electrode lead 25 negative lead 31A, 31B, 32A, 32B Lead film 41, 42 Insulation film
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H011 AA13 BB03 EE02 GG01 GG08 GG09 HH02 JJ25 5H022 BB03 BB11 CC03 KK03 5H028 AA01 AA07 BB05 CC02 CC08 5H029 AJ12 AM16 BJ04 BJ27 DJ05 DJ15 EJ12 HJ12 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 5H011 AA13 BB03 EE02 GG01 GG08 GG09 HH02 JJ25 5H022 BB03 BB11 CC03 KK03 5H028 AA01 AA07 BB05 CC02 CC08 5H029 AJ12 AM16 BJ04 BJ27 DJ05 DJ15 EJ12 HJ12
Claims (6)
極板をこの順に積層した発電要素を収容し、正極板の一
端が接続された正極リードと負極板の一端が接続された
負極リードを外装ケースから外部に引き出してなる二次
電池において、 正極リードの外装ケース内に位置する部分の表面に負極
板に対する絶縁フィルムを貼るとともに、負極リードの
外装ケース内に位置する部分の表面に正極板に対する絶
縁フィルムを貼ることを特徴とする二次電池。1. An outer case accommodates a power generating element in which a positive electrode plate, a separator, and a negative electrode plate are laminated in this order, and a positive electrode lead to which one end of the positive electrode plate is connected and a negative electrode lead to which one end of the negative electrode plate is connected are externally packaged. In a secondary battery that is pulled out from the case, attach an insulating film for the negative electrode plate on the surface of the part of the positive electrode lead located inside the outer case, and attach it to the surface of the part of the negative electrode lead located inside the outer case against the positive electrode plate. A secondary battery having an insulating film attached thereto.
が外装ケースのシール部から外部に引き出され、それら
の正極リードと負極リードのそれぞれに貼ったリードフ
ィルムにより上記シール部を封止するに際し、各リード
フィルムの延長部分を前記絶縁フィルムとしてなる請求
項１に記載の二次電池。2. Each of the positive electrode lead and the negative electrode lead is pulled out from a seal portion of an outer case, and each of the positive electrode lead and the negative electrode lead is sealed with a lead film attached to the positive electrode lead and the negative electrode lead. The secondary battery according to claim 1, wherein an extended portion of the lead film is used as the insulating film.
端に設けた正極タブを接続するとともに、負極リードに
複数枚の負極板の各一端に設けた負極タブを接続し、 正極リードと各正極タブの接続点を外装ケース内で前記
発電要素の積層方向の一側に納めるようにそれらの正極
リードと各正極タブを折り曲げるに際し、正極リードの
発電要素に臨む側の表面に前記絶縁フィルムを貼り、 負極リードと各負極タブの接続点を外装ケース内で前記
発電要素の積層方向の一側に納めるようにそれらの負極
リードと各負極タブを折り曲げるに際し、負極リードの
発電要素に臨む側の表面に前記絶縁フィルムを貼る請求
項１に記載の二次電池。3. The positive electrode lead is connected to a positive electrode tab provided at each end of a plurality of positive electrode plates, and the negative electrode lead is connected to a negative electrode tab provided at each end of a plurality of negative electrode plates to form a positive electrode lead. When bending the positive electrode lead and each positive electrode tab so that the connection point of each positive electrode tab is housed on one side in the stacking direction of the power generating element in the outer case, the insulating film is formed on the surface of the positive electrode lead facing the power generating element. When the negative electrode lead and each negative electrode tab are bent so that the connection point between the negative electrode lead and each negative electrode tab is housed on one side in the stacking direction of the power generating element in the outer case, the side of the negative electrode lead facing the power generating element. The secondary battery according to claim 1, wherein the insulating film is attached to a surface of the secondary battery.
が外装ケースのシール部から外部に引き出され、それら
の正極リードと負極リードのそれぞれの上下の両表面に
貼ったリードフィルムにより上記シール部を封止するに
際し、正極リードと負極リードのそれぞれの上下の一方
の表面に貼ったリードフィルムの延長部分を前記絶縁フ
ィルムとしてなる請求項３に記載の二次電池。4. The positive electrode lead and the negative electrode lead are pulled out from a seal portion of an outer case, and the seal portion is sealed by lead films attached to both upper and lower surfaces of the positive electrode lead and the negative electrode lead, respectively. The rechargeable battery according to claim 3, wherein the extension portions of the lead films attached to the upper and lower surfaces of each of the positive electrode lead and the negative electrode lead are used as the insulating film when stopping.
極板をこの順に積層した発電要素を収容し、正極板の一
端が接続された正極リードと負極板の一端が接続された
負極リードを外装ケースとの間に形成されるシール部か
ら外部に引き出してなる二次電池の製造方法において、 正極板とセパレータと負極板を積層して発電要素を作成
する工程と、 発電要素を構成する正極板の一端に正極リードを接続す
るとともに、負極板の一端に負極リードを接続する工程
と、 正極リードと負極リードの外装ケースのシール部を通過
する部分の表面にリードフィルムを貼る工程と、 正極リードと負極リードの外装ケース内に位置する部分
の表面に絶縁フィルムを貼る工程と、 外装ケース内に発電要素を収容し、正極リードと負極リ
ードを外装ケースのシール部から外部に引き出した状態
で封止する工程とを有してなることを特徴とする二次電
池の製造方法。5. A power generating element in which a positive electrode plate, a separator, and a negative electrode plate are stacked in this order in an outer case, and a positive electrode lead to which one end of the positive electrode plate is connected and a negative electrode lead to which one end of the negative electrode plate is connected to the outer package. In a method for manufacturing a secondary battery, which is drawn out from a seal portion formed between a case and the outside, a step of forming a power generation element by stacking a positive electrode plate, a separator, and a negative electrode plate, and a positive electrode plate constituting the power generation element Connecting the positive electrode lead to one end of the negative electrode plate, and connecting the negative electrode lead to one end of the negative electrode plate; attaching a lead film to the surface of the positive electrode lead and the portion of the negative electrode lead that passes through the seal part of the outer case; And a step of attaching an insulating film to the surface of the portion of the negative electrode lead located inside the outer case, and the power generating element is housed in the outer case. Method of manufacturing a secondary battery, characterized by comprising and a step of sealing in a pulled out from the pole tip to the outside.
の延長部分を用いる請求項５に記載の二次電池製造方
法。6. The method of manufacturing a secondary battery according to claim 5, wherein an extension portion of a lead film is used as the insulating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002056408A JP2003257387A (en) | 2002-03-01 | 2002-03-01 | Secondary battery and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002056408A JP2003257387A (en) | 2002-03-01 | 2002-03-01 | Secondary battery and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003257387A true JP2003257387A (en) | 2003-09-12 |
Family
ID=28666990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002056408A Pending JP2003257387A (en) | 2002-03-01 | 2002-03-01 | Secondary battery and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003257387A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005310402A (en) * | 2004-04-16 | 2005-11-04 | Nissan Motor Co Ltd | Bipolar battery, battery pack, and vehicle loading these |
| JP2007234466A (en) * | 2006-03-02 | 2007-09-13 | Nec Tokin Corp | Stacked lithium ion cell and its manufacturing method |
| JP2007273193A (en) * | 2006-03-30 | 2007-10-18 | Nippon Chemicon Corp | Electrochemical device |
| JP2007305581A (en) * | 2006-05-08 | 2007-11-22 | Lg Chem Ltd | Lithium ion polymer battery for improved safety on falling |
| WO2008016243A1 (en) * | 2006-07-31 | 2008-02-07 | Lg Chem, Ltd. | Secondary battery with top sealed portion of improved structure |
| JP2008243815A (en) * | 2007-03-26 | 2008-10-09 | Enertech Internatl Inc | Pouch type lithium secondary battery |
| JP2008262832A (en) * | 2007-04-12 | 2008-10-30 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery |
| JP2010003485A (en) * | 2008-06-19 | 2010-01-07 | Sumitomo Electric Ind Ltd | Lead member, nonaqueous electrolyte power storage device with lead member and manufacturing method of lead member |
| JP2012109124A (en) * | 2010-11-17 | 2012-06-07 | Sony Corp | Nonaqueous electrolyte battery |
| JP2013505553A (en) * | 2009-09-28 | 2013-02-14 | エルジー・ケム・リミテッド | Secondary battery and manufacturing method thereof |
| KR101255628B1 (en) | 2009-02-17 | 2013-04-16 | 주식회사 엘지화학 | Method Of Manufacturing Battery Pack With Flexible Manufacturing Plan |
| JP2014017053A (en) * | 2012-07-05 | 2014-01-30 | Toyota Industries Corp | Power storage device |
| WO2014109481A1 (en) * | 2013-01-11 | 2014-07-17 | 주식회사 엘지화학 | Secondary battery comprising integrated anode lead and cathode lead, and manufacturing method therefor |
| JP2015057788A (en) * | 2014-11-17 | 2015-03-26 | ソニー株式会社 | Method for manufacturing nonaqueous electrolyte battery |
| KR20160110090A (en) | 2015-03-09 | 2016-09-21 | 주식회사 엘지화학 | Secondary battery |
| CN107591555A (en) * | 2016-07-06 | 2018-01-16 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| KR20190027528A (en) * | 2017-09-07 | 2019-03-15 | 주식회사 엘지화학 | Pouch type secondary battery |
| CN109585720A (en) * | 2017-09-28 | 2019-04-05 | 麦克赛尔控股株式会社 | Electrochemical element |
| CN110048036A (en) * | 2019-04-19 | 2019-07-23 | 桑顿新能源科技有限公司 | Reinforcing rib piece and preparation method thereof, battery core and preparation method thereof and soft-package battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261268A (en) * | 1985-09-10 | 1987-03-17 | Toppan Printing Co Ltd | Flat-type electrochemical cell |
| JPH11233133A (en) * | 1998-02-18 | 1999-08-27 | Matsushita Electric Ind Co Ltd | Battery in which laminated sheet is used for sheath case |
| JP2000208112A (en) * | 1999-01-19 | 2000-07-28 | Showa Alum Corp | Battery terminal covering material and covered battery terminal |
| JP2001297748A (en) * | 2000-04-17 | 2001-10-26 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery |
| JP2002075296A (en) * | 2000-08-30 | 2002-03-15 | Gs-Melcotec Co Ltd | Thin type secondary battery |
-
2002
- 2002-03-01 JP JP2002056408A patent/JP2003257387A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261268A (en) * | 1985-09-10 | 1987-03-17 | Toppan Printing Co Ltd | Flat-type electrochemical cell |
| JPH11233133A (en) * | 1998-02-18 | 1999-08-27 | Matsushita Electric Ind Co Ltd | Battery in which laminated sheet is used for sheath case |
| JP2000208112A (en) * | 1999-01-19 | 2000-07-28 | Showa Alum Corp | Battery terminal covering material and covered battery terminal |
| JP2001297748A (en) * | 2000-04-17 | 2001-10-26 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery |
| JP2002075296A (en) * | 2000-08-30 | 2002-03-15 | Gs-Melcotec Co Ltd | Thin type secondary battery |
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4617704B2 (en) * | 2004-04-16 | 2011-01-26 | 日産自動車株式会社 | Bipolar battery, battery pack, and vehicle equipped with these |
| JP2005310402A (en) * | 2004-04-16 | 2005-11-04 | Nissan Motor Co Ltd | Bipolar battery, battery pack, and vehicle loading these |
| JP2007234466A (en) * | 2006-03-02 | 2007-09-13 | Nec Tokin Corp | Stacked lithium ion cell and its manufacturing method |
| JP2007273193A (en) * | 2006-03-30 | 2007-10-18 | Nippon Chemicon Corp | Electrochemical device |
| JP2007305581A (en) * | 2006-05-08 | 2007-11-22 | Lg Chem Ltd | Lithium ion polymer battery for improved safety on falling |
| WO2008016243A1 (en) * | 2006-07-31 | 2008-02-07 | Lg Chem, Ltd. | Secondary battery with top sealed portion of improved structure |
| US8268477B2 (en) | 2006-07-31 | 2012-09-18 | Lg Chem, Ltd. | Secondary battery with top sealed portion of improved structure |
| JP2009545850A (en) * | 2006-07-31 | 2009-12-24 | エルジー・ケム・リミテッド | Secondary battery having an upper sealing portion with an improved structure |
| JP2008243815A (en) * | 2007-03-26 | 2008-10-09 | Enertech Internatl Inc | Pouch type lithium secondary battery |
| WO2008136177A1 (en) * | 2007-04-12 | 2008-11-13 | Panasonic Corporation | Nonaqueous electrolytic secondary battery |
| US8105711B2 (en) | 2007-04-12 | 2012-01-31 | Panasonic Corporation | Nonaqueous electrolyte secondary battery |
| KR101114715B1 (en) * | 2007-04-12 | 2012-03-13 | 파나소닉 주식회사 | Nonaqueous electrolytic secondary battery |
| JP2008262832A (en) * | 2007-04-12 | 2008-10-30 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery |
| JP2010003485A (en) * | 2008-06-19 | 2010-01-07 | Sumitomo Electric Ind Ltd | Lead member, nonaqueous electrolyte power storage device with lead member and manufacturing method of lead member |
| KR101255628B1 (en) | 2009-02-17 | 2013-04-16 | 주식회사 엘지화학 | Method Of Manufacturing Battery Pack With Flexible Manufacturing Plan |
| JP2013505553A (en) * | 2009-09-28 | 2013-02-14 | エルジー・ケム・リミテッド | Secondary battery and manufacturing method thereof |
| JP2012109124A (en) * | 2010-11-17 | 2012-06-07 | Sony Corp | Nonaqueous electrolyte battery |
| US9947959B2 (en) | 2010-11-17 | 2018-04-17 | Murata Manufacturing Co., Ltd. | Non-aqueous electrolyte battery having porous polymer layer between laminate film and battery device |
| JP2014017053A (en) * | 2012-07-05 | 2014-01-30 | Toyota Industries Corp | Power storage device |
| US9406922B2 (en) | 2013-01-11 | 2016-08-02 | Lg Chem, Ltd | Secondary battery including integrated anode and cathode leads and method of manufacturing the same |
| WO2014109481A1 (en) * | 2013-01-11 | 2014-07-17 | 주식회사 엘지화학 | Secondary battery comprising integrated anode lead and cathode lead, and manufacturing method therefor |
| JP2015057788A (en) * | 2014-11-17 | 2015-03-26 | ソニー株式会社 | Method for manufacturing nonaqueous electrolyte battery |
| KR20160110090A (en) | 2015-03-09 | 2016-09-21 | 주식회사 엘지화학 | Secondary battery |
| CN107591555A (en) * | 2016-07-06 | 2018-01-16 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN107591555B (en) * | 2016-07-06 | 2024-03-19 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| KR20190027528A (en) * | 2017-09-07 | 2019-03-15 | 주식회사 엘지화학 | Pouch type secondary battery |
| KR102328993B1 (en) * | 2017-09-07 | 2021-11-22 | 주식회사 엘지에너지솔루션 | Pouch type secondary battery |
| CN109585720A (en) * | 2017-09-28 | 2019-04-05 | 麦克赛尔控股株式会社 | Electrochemical element |
| CN109585720B (en) * | 2017-09-28 | 2022-03-29 | 麦克赛尔株式会社 | Electrochemical element |
| CN110048036A (en) * | 2019-04-19 | 2019-07-23 | 桑顿新能源科技有限公司 | Reinforcing rib piece and preparation method thereof, battery core and preparation method thereof and soft-package battery |
| CN110048036B (en) * | 2019-04-19 | 2024-05-17 | 桑顿新能源科技有限公司 | Reinforcing rib sheet and preparation method thereof, battery cell and preparation method thereof, and soft package battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2003257387A (en) | Secondary battery and its manufacturing method | |
| JP5330117B2 (en) | Electrode assembly and lithium secondary battery using the same | |
| JP5495192B2 (en) | Film exterior electrical device and battery pack | |
| JP6735445B2 (en) | Wound battery | |
| KR101106377B1 (en) | Rechargeable Battery | |
| KR101216422B1 (en) | Secondary Battery Having Sealing Portion of Improved Insulating Property | |
| JP6743664B2 (en) | Power storage device and method of manufacturing power storage device | |
| US20070096688A1 (en) | Battery | |
| JP2010003692A (en) | Electrode assembly, secondary battery using the same, and manufacturing method for the secondary battery | |
| JP7212547B2 (en) | Laminated exterior battery | |
| JP2011108612A (en) | Secondary battery | |
| JP5676172B2 (en) | Manufacturing method of laminated film exterior laminated battery | |
| KR20080022915A (en) | Pouch for secondary battery | |
| KR20140103402A (en) | Pouch for battery, and pouch type battery including the same | |
| JP2004356085A (en) | Jelly roll type electrode assembly and secondary battery adopting this | |
| JP6775170B2 (en) | Revolving battery | |
| JP2006351361A (en) | Film armor type power storage device | |
| JP2006164784A (en) | Film-armored electric device | |
| JP2010225496A (en) | Safety mechanism for laminate exterior-package power storage device | |
| JP2000208110A (en) | Thin battery | |
| JP2008269851A (en) | Battery and manufacturing method of battery | |
| JP2006228591A (en) | Nonaqueous electrolyte secondary battery | |
| JP2011070977A (en) | Laminated battery | |
| JP2005149938A (en) | Film exterior packaged battery and manufacturing method therefor | |
| JP2008192471A (en) | Battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050210 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070524 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080318 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080708 |