JP2006338992A - Square lithium ion battery - Google Patents
Square lithium ion battery Download PDFInfo
- Publication number
- JP2006338992A JP2006338992A JP2005161152A JP2005161152A JP2006338992A JP 2006338992 A JP2006338992 A JP 2006338992A JP 2005161152 A JP2005161152 A JP 2005161152A JP 2005161152 A JP2005161152 A JP 2005161152A JP 2006338992 A JP2006338992 A JP 2006338992A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- lithium ion
- ion battery
- thickness
- plate thickness
- 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
Images
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
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
Description
本発明は、電池の構造に関し、薄型の角型リチウムイオン電池に関する。 The present invention relates to a battery structure, and relates to a thin rectangular lithium ion battery.
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、携帯電話機、デジタルカメラ等の電源として、小型で大容量の密閉型電池が用いられ、リチウムイオン電池等の非水電解液を使用した密閉型電池が用いられている。、電子機器の薄型化に伴い電池も薄型機器に適した角型電池がスペース効率が優れており、広く用いられている。 Various types of batteries are used as power sources for small electronic devices, and small and large-capacity sealed batteries are used as power sources for mobile phones and digital cameras, and non-aqueous electrolytes such as lithium ion batteries are used. A sealed battery is used. As the electronic equipment becomes thinner, a rectangular battery suitable for a thin equipment is excellent in space efficiency and is widely used.
図5は、従来の角型リチウムイオン電池の一例を説明する図であり、電池中央部の横断面図である。図5(a)は充放電を繰り返す前の断面図であり、図5(b)は充放電を繰り返した後の断面図である。図5に示した電池は、アルミニウムまたはその合金からなる電池缶1にセパレータを介して正極と負極を積層して巻回し、成型した電池要素4を収納している。
FIG. 5 is a diagram for explaining an example of a conventional prismatic lithium ion battery, and is a cross-sectional view of the central part of the battery. Fig.5 (a) is sectional drawing before repeating charging / discharging, and FIG.5 (b) is sectional drawing after repeating charging / discharging. The battery shown in FIG. 5 houses a
従来技術による巻回型の電極を用いた電池は、体積効率の高い電池として知られているが、薄型かつ角型のリチウムイオン電池の容量は電池要素4を構成する正極、負極の活物質量に依存している。正極、負極集電体に塗布される活物質は塗布厚を厚くすることにより容量を大きくすることが可能であるが、塗布厚を厚くした場合、充放電による活物質層の膨張収縮が繰り返し起こり、そのため、電池缶1は、図5(b)に示すように活物質層を有する電池要素4の膨れを抑えきれず変形し、電池使用機器への装着が困難となる等の問題があった。
A battery using a wound-type electrode according to the prior art is known as a battery with high volumetric efficiency, but the capacity of a thin and square lithium ion battery is the amount of active material of the positive and negative electrodes constituting the
電池要素の膨れによる電池缶の変形を防止するために、缶側面に凹部を設けた角型電池が特許文献1、特許文献2、特許文献3などに記載されている。
In order to prevent the deformation of the battery can due to the swelling of the battery element, Patent Document 1,
従来技術による巻回積層した電池要素を収納した角型電池においては充放電を繰り返すことにより電池要素が膨れる。電池要素の膨れを見込んで、缶内部の容積を増加させるために電池缶板厚を薄くした場合には深絞り成型時に徐々に角部が脆くなり電池缶の成型が困難になる。また、電池缶側面に凹部を設けて缶の変形を抑える場合には、缶に収納できる電池要素の厚みを凹部の分だけ薄くする必要があり、その空間分が電池要素分としては利用できず、高容量化の点で好ましくなかった。この状況において、本発明の課題は、充放電の繰り返しによる電池要素の膨張に対し、信頼性が高く、高容量の角型リチウムイオン電池を提供することにある。 In a square battery containing a wound and laminated battery element according to the prior art, the battery element expands by repeated charge and discharge. If the thickness of the battery can plate is reduced in order to increase the volume inside the can in anticipation of the swelling of the battery elements, the corners gradually become brittle during deep drawing, making it difficult to mold the battery can. In addition, when a concave portion is provided on the side surface of the battery can to suppress deformation of the can, it is necessary to reduce the thickness of the battery element that can be stored in the can by the amount of the concave portion, and the space cannot be used as the battery element portion. This is not preferable in terms of increasing the capacity. In this situation, an object of the present invention is to provide a prismatic lithium ion battery with high reliability and high capacity against expansion of battery elements due to repeated charge and discharge.
前記課題を解決するため、本発明の角型リチウムイオン電池は、正極および負極をセパレータを介して積層して巻回した扁平状の電池要素を電池缶に収納した角型リチウムイオン電池において、前記電池要素の扁平面に平行な前記電池缶側面の中央部板厚が端部板厚より薄く、前記電池要素の巻回の中心軸に垂直な前記電池缶の断面形状は、四隅近傍の板厚に対して外形の長辺の中央部の板厚が薄いことを特徴とする。前記電池缶は中央部板厚が端部板厚より薄い異形材より絞り加工で成形してもよい。前記電池缶はアルミ合金板を側面中央部に凸部を設けた金型で成形してもよい。 In order to solve the above problems, a prismatic lithium ion battery according to the present invention is a prismatic lithium ion battery in which a flat battery element in which a positive electrode and a negative electrode are stacked and wound via a separator is housed in a battery can. The central plate thickness of the side surface of the battery can parallel to the flat surface of the battery element is thinner than the end plate thickness, and the cross-sectional shape of the battery can perpendicular to the central axis of the winding of the battery element is the plate thickness near the four corners. On the other hand, the thickness of the central part of the long side of the outer shape is thin. The battery can may be formed by drawing from a deformed material whose center plate thickness is thinner than the end plate thickness. The battery can may be formed by molding an aluminum alloy plate with a convex portion at the center of the side surface.
本発明の角型リチウムイオン電池によれば、充放電を繰り返した際にも電池要素の膨張を缶中央部の板圧の薄い部分で吸収し、電池缶の変形を防止することが可能となる。また、缶の内容積が増加するため、1回の電解液注液量を増加することができ、電解液の注液が容易になる等、信頼性が高く高容量で製造の容易な角型リチウムイオン電池を提供できる。 According to the prismatic lithium ion battery of the present invention, it is possible to prevent the battery can from being deformed by absorbing the expansion of the battery element at a thin plate pressure portion at the center of the can even when charging and discharging are repeated. . In addition, since the inner volume of the can increases, the amount of injection of the electrolyte can be increased, and the injection of the electrolyte is facilitated. For example, the rectangular shape is highly reliable and easy to manufacture. A lithium ion battery can be provided.
次に、本発明の実施の形態を図面に基づいて説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
図1は、本発明の角型リチウムイオン電池に用いた電池缶を示す斜視図、図2は本発明の角型リチウムイオン電池の一例の説明図であり、電池中央部の横断面図である。図2(a)は充放電を繰り返す前の断面図であり、図2(b)は充放電を繰り返し行った後の断面図である。 FIG. 1 is a perspective view showing a battery can used in the prismatic lithium ion battery of the present invention, and FIG. 2 is an explanatory view of an example of the prismatic lithium ion battery of the present invention, and is a cross-sectional view of the central portion of the battery. . 2A is a cross-sectional view before repeated charging and discharging, and FIG. 2B is a cross-sectional view after repeatedly charging and discharging.
電池要素4は、セパレータを介して正極と負極を積層して扁平に巻回した後に、さらに押圧処理し扁平にして作製する。側面の中央部3の板厚が端部2の板厚より薄い電池缶に電池要素4を収納し、電池缶開口部を封止した蓋体の注液口から、電解液を注入し、角型リチウムイオン電池とする。
The
本発明の角型リチウムイオン電池では、電池要素4の電池缶との接触する部分が、図2(a)に示すように電池缶側面部の端部2で電池要素4を保持する構造となっていて、電池要素4の中央部では缶側面の中央部3との間には隙間が生じている。充放電の繰り返しにより電池要素4の扁平面の中央部が最も大きく膨張するが、その場合、図2(b)に示すように、電池要素4の端部はほとんど膨張しないため、そのまま電池缶側面端部2に保持されている構造に変化はない。
In the rectangular lithium ion battery of the present invention, the part of the
一方、膨張部分に対応する電池缶側面中央部3は、端部に比較して缶の板厚が薄く、缶内部に生じていた隙間に入り込む構造となり、実質的に電池要素の膨張分は缶の中央部3の板厚の薄い部分に吸収されることになる。
On the other hand, the battery can side surface
電池缶側面の中央部は平面である必要はなく、電池要素の膨張時の形状に合わせ曲面としてもよいし、段差のある平面としてもよいし、その組み合わせでもよい。電池缶側面部の端部の板厚の厚い部分の端面からの長さは、少なくとも充放電を繰り返す前の電池要素の扁平部を保持していればよく電池要素の形状により決まる。 The central part of the side surface of the battery can does not have to be a flat surface, and may be a curved surface according to the shape of the battery element when it is expanded, a flat surface with a step, or a combination thereof. The length from the end surface of the thick portion of the end portion of the battery can side surface portion is determined by the shape of the battery element as long as it holds at least the flat portion of the battery element before repeated charging and discharging.
電池缶1は、図3の異形材を説明する斜視図に示す中央部7の板厚が端部板厚より薄いアルミニウム合金異形材を深絞り加工により成型して作製し、電池缶側面中央部3の板厚は端部2の板厚より薄くなっている。缶の製造材料として異形材を使用することにより、側面中央部板厚のしごきが不要となり、工程数が短縮できる利点がある。また、電池缶は、図4の斜視図に示すアルミニウム合金平板を側面中央部に凸部を設けた雄金型9と金型内部がほぼ直方体の形状の雌金型10を用いて、数工程のトランスファ成型により製造してもよい。特殊形状の異形材を使用せずに平板材からでもトランスファ成型で加工できる利点がある。
The battery can 1 is produced by deep-drawing an aluminum alloy deformed material in which the thickness of the
外形寸法縦48mm、横30mm、厚さ4mm、側面端部板厚0.2mm、側面中央部板厚0.15mmのアルミニウム板(A3003)からなる電池缶に、正極と負極を微多孔性ポリプロピレン膜のセパレータを介して積層し、渦巻状に巻回して作製した縦44mm、横29mm、厚さ3.5mmの電池要素を収容し、蓋体を缶に嵌合したのちレーザ溶接する。蓋体に設けられた注入口から電解液を注入し角型リチウムイオン電池を作製した。得られた電池の充放電サイクル試験、即ち 充電電流680mA、充電終止電圧4.2V、2.5時間保持、放電電流680mA、放電終止電圧3.0V、20℃の条件で500サイクル経過後の、電池缶の厚さを測定した結果、10個の平均値は4.75mmであった。 A positive electrode and a negative electrode are made of a microporous polypropylene film on a battery can made of an aluminum plate (A3003) having an outer dimension of 48 mm in length, 30 mm in width, 4 mm in thickness, 0.2 mm in side edge plate thickness, and 0.15 mm in side wall center plate thickness. A battery element having a length of 44 mm, a width of 29 mm, and a thickness of 3.5 mm produced by being wound in a spiral shape is accommodated, and a lid is fitted into a can and laser welded. An electrolytic solution was injected from an injection port provided in the lid to produce a square lithium ion battery. Charging / discharging cycle test of the obtained battery, that is, charging current 680 mA, charging end voltage 4.2 V, holding for 2.5 hours, discharging current 680 mA, discharging end voltage 3.0 V, after 20 cycles, As a result of measuring the thickness of the battery can, the average value of 10 pieces was 4.75 mm.
(比較例)
外形寸法縦48mm、横30mm、厚さ4mm、板厚0.2mmのアルミニウム板(A3003)からなる電池缶を用いた点を除き、実施例1と同様に角型リチウムイオン電池を作製し、充放電サイクル試験を行い、電池缶の厚さを測定した結果、10個の平均値は4.78mmとなった。
(Comparative example)
A square lithium ion battery was fabricated and charged in the same manner as in Example 1 except that a battery can made of an aluminum plate (A3003) having an outer dimension of 48 mm in length, 30 mm in width, 4 mm in thickness, and 0.2 mm in thickness was used. As a result of conducting a discharge cycle test and measuring the thickness of the battery can, the average value of 10 pieces was 4.78 mm.
アルミニウム板(A3003)からなる 中央部の幅20mm、板厚0.15mm、端部の幅50mm、板厚0.2mmの異形材を側面中央部に幅20mm、高さ0.05mmの凸部を設けた金型で成型し外形寸法縦48mm、横30mm、厚さ4mm、側面端部板厚0.2mm、側面中央部板厚0.15mm電池缶を作製した。 An aluminum plate (A3003) consisting of an aluminum plate (A3003) with a center width of 20 mm, a plate thickness of 0.15 mm, an end width of 50 mm, and a plate thickness of 0.2 mm is provided with a convex portion having a width of 20 mm and a height of 0.05 mm at the center of the side surface. A battery can was formed by molding with the provided mold, and the outer dimensions were 48 mm in length, 30 mm in width, 4 mm in thickness, 0.2 mm in side edge plate thickness, and 0.15 mm in thickness at the side center plate.
アルミニウム合金(A3003)からなる 板厚0.2mmのアルミニウム平板(A3003)を側面中央部に幅20mm、高さ0.05mmの凸部を設けた金型で成型し外形寸法縦48mm、横30mm、厚さ4mm、側面端部板厚0.2mm、側面中央部板厚0.15mm電池缶を作製した。 An aluminum flat plate (A3003) made of an aluminum alloy (A3003) is molded with a mold having a convex part with a width of 20 mm and a height of 0.05 mm at the center of the side surface and is molded with an outer dimension of 48 mm in length and 30 mm in width. A battery can having a thickness of 4 mm, a side surface end plate thickness of 0.2 mm, and a side surface center plate thickness of 0.15 mm was produced.
本発明の角型リチウムイオン電池は、電池要素の扁平面に平行な電池缶側面の中央部板厚が端部板厚より薄いので、充放電を繰り返した場合にも電池缶の厚さの変化が小さく信頼性が高くなる。 In the prismatic lithium ion battery of the present invention, since the central plate thickness of the side surface of the battery can parallel to the flat surface of the battery element is smaller than the end plate thickness, the thickness of the battery can changes even when charging and discharging are repeated. Is small and reliable.
1 電池缶
2 (電池缶側面)端部
3 (電池缶側面)中央部
4 電池要素
5 異形材
6 (異形材)端部
7 (異形材)中央部
8 平板材
9 雄金型
10 雌金型
DESCRIPTION OF SYMBOLS 1 Battery can 2 (Battery can side surface) End part 3 (Battery can side surface)
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005161152A JP2006338992A (en) | 2005-06-01 | 2005-06-01 | Square lithium ion battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005161152A JP2006338992A (en) | 2005-06-01 | 2005-06-01 | Square lithium ion battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2006338992A true JP2006338992A (en) | 2006-12-14 |
Family
ID=37559377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005161152A Pending JP2006338992A (en) | 2005-06-01 | 2005-06-01 | Square lithium ion battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2006338992A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009259450A (en) * | 2008-04-14 | 2009-11-05 | Toyota Motor Corp | Battery and manufacturing method therefor |
JP2010040181A (en) * | 2008-07-31 | 2010-02-18 | Toyota Motor Corp | Sealed battery and battery pack |
WO2011145205A1 (en) * | 2010-05-21 | 2011-11-24 | トヨタ自動車株式会社 | Secondary battery |
KR101136297B1 (en) * | 2009-03-25 | 2012-04-19 | 삼성에스디아이 주식회사 | Secondary battery |
US8445131B2 (en) | 2009-11-17 | 2013-05-21 | Samsung Sdi Co., Ltd. | Holder case for secondary battery and lithium secondary battery using the same |
CN103311461A (en) * | 2012-03-12 | 2013-09-18 | 株式会社杰士汤浅国际 | Electric storage device |
WO2014001878A1 (en) * | 2012-06-27 | 2014-01-03 | Toyota Jidosha Kabushiki Kaisha | Rectangular battery and method of manufacturing rectangular battery |
JP2014157803A (en) * | 2012-03-12 | 2014-08-28 | Gs Yuasa Corp | Power storage element |
KR20150028138A (en) * | 2013-09-05 | 2015-03-13 | 주식회사 엘지화학 | Battery Cell of Increased Capacity and Device Comprising the Same |
JP2016018584A (en) * | 2014-07-04 | 2016-02-01 | 日立マクセル株式会社 | Nonaqueous electrolyte secondary battery |
JP2017073330A (en) * | 2015-10-09 | 2017-04-13 | 日立マクセル株式会社 | Nonaqueous electrolyte secondary battery |
EP2551934B1 (en) * | 2011-07-28 | 2018-12-05 | Samsung SDI Co., Ltd. | Rechargeable battery |
CN113054305A (en) * | 2019-12-26 | 2021-06-29 | 丰田自动车株式会社 | Battery pack and battery holder |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07326331A (en) * | 1994-05-31 | 1995-12-12 | Sanyo Electric Co Ltd | Sealed square battery |
JPH10284016A (en) * | 1997-04-02 | 1998-10-23 | Furukawa Electric Co Ltd:The | Aluminum alloy sheath-can for sealed square secondary battery and lithium secondary battery using it |
JPH10340710A (en) * | 1997-06-05 | 1998-12-22 | Fuji Elelctrochem Co Ltd | Battery pack |
JPH11135080A (en) * | 1997-10-28 | 1999-05-21 | Toshiba Corp | Square sealed battery and its manufacture |
JP2002050322A (en) * | 2000-08-04 | 2002-02-15 | Matsushita Electric Ind Co Ltd | Sealed square flat cell |
JP2003059471A (en) * | 2001-08-20 | 2003-02-28 | Sony Corp | Housing for battery |
JP2003123704A (en) * | 2001-10-12 | 2003-04-25 | Matsushita Electric Ind Co Ltd | Battery can and battery using the same |
JP2003151508A (en) * | 2001-11-12 | 2003-05-23 | Matsushita Electric Ind Co Ltd | Square lithium ion secondary battery |
JP2003242936A (en) * | 2002-02-15 | 2003-08-29 | Sanyo Electric Co Ltd | Battery |
JP2005310579A (en) * | 2004-04-22 | 2005-11-04 | Matsushita Electric Ind Co Ltd | Square secondary battery |
-
2005
- 2005-06-01 JP JP2005161152A patent/JP2006338992A/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07326331A (en) * | 1994-05-31 | 1995-12-12 | Sanyo Electric Co Ltd | Sealed square battery |
JPH10284016A (en) * | 1997-04-02 | 1998-10-23 | Furukawa Electric Co Ltd:The | Aluminum alloy sheath-can for sealed square secondary battery and lithium secondary battery using it |
JPH10340710A (en) * | 1997-06-05 | 1998-12-22 | Fuji Elelctrochem Co Ltd | Battery pack |
JPH11135080A (en) * | 1997-10-28 | 1999-05-21 | Toshiba Corp | Square sealed battery and its manufacture |
JP2002050322A (en) * | 2000-08-04 | 2002-02-15 | Matsushita Electric Ind Co Ltd | Sealed square flat cell |
JP2003059471A (en) * | 2001-08-20 | 2003-02-28 | Sony Corp | Housing for battery |
JP2003123704A (en) * | 2001-10-12 | 2003-04-25 | Matsushita Electric Ind Co Ltd | Battery can and battery using the same |
JP2003151508A (en) * | 2001-11-12 | 2003-05-23 | Matsushita Electric Ind Co Ltd | Square lithium ion secondary battery |
JP2003242936A (en) * | 2002-02-15 | 2003-08-29 | Sanyo Electric Co Ltd | Battery |
JP2005310579A (en) * | 2004-04-22 | 2005-11-04 | Matsushita Electric Ind Co Ltd | Square secondary battery |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009259450A (en) * | 2008-04-14 | 2009-11-05 | Toyota Motor Corp | Battery and manufacturing method therefor |
JP2010040181A (en) * | 2008-07-31 | 2010-02-18 | Toyota Motor Corp | Sealed battery and battery pack |
KR101136297B1 (en) * | 2009-03-25 | 2012-04-19 | 삼성에스디아이 주식회사 | Secondary battery |
US8691426B2 (en) | 2009-03-25 | 2014-04-08 | Samsung Sdi Co., Ltd. | Secondary battery having a wall with varying thicknesses |
US8445131B2 (en) | 2009-11-17 | 2013-05-21 | Samsung Sdi Co., Ltd. | Holder case for secondary battery and lithium secondary battery using the same |
US8758917B2 (en) | 2010-05-21 | 2014-06-24 | Toyota Jidosha Kabushiki Kaisha | Secondary battery |
WO2011145205A1 (en) * | 2010-05-21 | 2011-11-24 | トヨタ自動車株式会社 | Secondary battery |
JP5445872B2 (en) * | 2010-05-21 | 2014-03-19 | トヨタ自動車株式会社 | Secondary battery |
EP2551934B1 (en) * | 2011-07-28 | 2018-12-05 | Samsung SDI Co., Ltd. | Rechargeable battery |
JP2014157803A (en) * | 2012-03-12 | 2014-08-28 | Gs Yuasa Corp | Power storage element |
CN103311461A (en) * | 2012-03-12 | 2013-09-18 | 株式会社杰士汤浅国际 | Electric storage device |
US9065082B2 (en) | 2012-03-12 | 2015-06-23 | Gs Yuasa International Ltd. | Electric storage device |
JP2017098259A (en) * | 2012-03-12 | 2017-06-01 | 株式会社Gsユアサ | Power storage element |
WO2014001878A1 (en) * | 2012-06-27 | 2014-01-03 | Toyota Jidosha Kabushiki Kaisha | Rectangular battery and method of manufacturing rectangular battery |
US10741801B2 (en) | 2012-06-27 | 2020-08-11 | Toyota Jidosha Kabushiki Kaisha | Rectangular battery and method of manufacturing rectangular battery |
KR20150028138A (en) * | 2013-09-05 | 2015-03-13 | 주식회사 엘지화학 | Battery Cell of Increased Capacity and Device Comprising the Same |
KR101666383B1 (en) * | 2013-09-05 | 2016-10-14 | 주식회사 엘지화학 | Battery Cell of Increased Capacity and Device Comprising the Same |
JP2016018584A (en) * | 2014-07-04 | 2016-02-01 | 日立マクセル株式会社 | Nonaqueous electrolyte secondary battery |
JP2017073330A (en) * | 2015-10-09 | 2017-04-13 | 日立マクセル株式会社 | Nonaqueous electrolyte secondary battery |
CN113054305A (en) * | 2019-12-26 | 2021-06-29 | 丰田自动车株式会社 | Battery pack and battery holder |
JP2021106109A (en) * | 2019-12-26 | 2021-07-26 | トヨタ自動車株式会社 | Battery pack and cell holder |
JP7333001B2 (en) | 2019-12-26 | 2023-08-24 | トヨタ自動車株式会社 | Batteries and battery holders |
US11749862B2 (en) | 2019-12-26 | 2023-09-05 | Toyota Jidosha Kabushiki Kaisha | Battery pack and battery holder |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2006338992A (en) | Square lithium ion battery | |
TWI496335B (en) | Battery cell of stair-like structure | |
JP3725433B2 (en) | Square battery and method of manufacturing the same | |
KR101596269B1 (en) | Battery Cell of Novel Structure | |
JP4951812B2 (en) | Nonaqueous electrolyte battery and manufacturing method thereof | |
JP2011065998A (en) | Secondary battery | |
US6908704B2 (en) | Method of manufacturing secondary battery | |
US20230071692A1 (en) | Pouch Type Battery Case and Pouch Type Secondary Battery | |
US20230126021A1 (en) | Battery | |
JP7242119B2 (en) | SECONDARY BATTERY MANUFACTURING APPARATUS AND METHOD | |
KR101725901B1 (en) | Battery Cell Comprising Battery Case of Shape Corresponding to Electrode Assembly of Stair-like Structure | |
KR20210011813A (en) | The Case For Secondary Battery And The Pouch Type Secondary Battery | |
JP2000133216A (en) | Nonaqueous electrolyte battery and manufacture of same | |
US20160056497A1 (en) | Battery cell of vertically stacked structure | |
JP7139015B2 (en) | SECONDARY BATTERY MANUFACTURING APPARATUS AND METHOD | |
JP4446735B2 (en) | Nonaqueous electrolyte secondary battery | |
JP2001176455A (en) | Cylindrical secondary battery | |
US11127981B2 (en) | Battery cell including battery case having protrusion corresponding to stepped electrode assembly | |
KR101308294B1 (en) | Electrode assembly with means leveling thickness and rechargeable battery in using same | |
JP5673307B2 (en) | Nonaqueous electrolyte secondary battery | |
JP2003242936A (en) | Battery | |
KR20160064859A (en) | Convex prismatic shaped can and method for manufacturing prismatic secondary battery comprising same | |
JP2002175785A (en) | Cylindrical secondary battery | |
JP2007220413A (en) | Square battery | |
KR100473401B1 (en) | Producing method of lithium polymer secondary battery |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20070117 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20071205 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20100618 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110301 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110706 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110824 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20111011 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20120321 |