JP7135001B2 - battery - Google Patents

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JP7135001B2
JP7135001B2 JP2019560877A JP2019560877A JP7135001B2 JP 7135001 B2 JP7135001 B2 JP 7135001B2 JP 2019560877 A JP2019560877 A JP 2019560877A JP 2019560877 A JP2019560877 A JP 2019560877A JP 7135001 B2 JP7135001 B2 JP 7135001B2
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laminate
exterior material
battery
electrode
along
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JPWO2019123910A1 (en
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卓哉 長谷川
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Envision AESC Japan Ltd
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    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Description

本発明は、電池に関する。 The present invention relates to batteries.

近年、非水電解液二次電池、特に、リチウムイオン二次電池が開発されている。リチウムイオン二次電池は、正極、負極及びセパレータを含む積層体を有している。正極、負極及びセパレータは、正極と負極がセパレータによって隔てられるように積層されている。積層体は、外装材によって封止される。 In recent years, nonaqueous electrolyte secondary batteries, especially lithium ion secondary batteries, have been developed. A lithium ion secondary battery has a laminate including a positive electrode, a negative electrode, and a separator. The positive electrode, the negative electrode and the separator are laminated such that the positive electrode and the negative electrode are separated by the separator. The laminate is sealed with an exterior material.

特許文献１には、積層体及び外装材を有する電池の一例について記載されている。この例では、シート状の外装材の一部分同士を互いに貼り合わせて外装材を筒状に形成する。次いで、積層体を外装材に挿入する。次いで、積層体の表面に沿って外装材が積層体に接するように筒状の外装材の両端の開口を溶着させて積層体を封止する。 Patent Literature 1 describes an example of a battery having a laminate and an exterior material. In this example, parts of the sheet-like exterior material are adhered to each other to form the exterior material into a tubular shape. The laminate is then inserted into the facing material. Next, the laminate is sealed by welding the openings at both ends of the cylindrical exterior material so that the exterior material comes into contact with the laminate along the surface of the laminate.

特開平１０－２１４６０６号公報JP-A-10-214606

特許文献１の上述した例のように積層体の表面に沿って外装材が積層体に接するように積層体を封止すると、外装材の一部分がその他の領域よりも外側に向けて突出することを本発明者は新規に見出した。 When the laminate is sealed so that the exterior material is in contact with the laminate along the surface of the laminate as in the above-described example of Patent Document 1, part of the exterior material protrudes outward from the other region. The present inventor newly discovered.

本発明の目的は、外装材の一部分の外側への突出を抑えることにある。 SUMMARY OF THE INVENTION An object of the present invention is to suppress outward protrusion of a portion of an exterior material.

本発明によれば、
第１電極、第２電極及びセパレータを含み、前記第１電極と前記第２電極とが前記セパレータによって隔てられるように前記第１電極、前記第２電極及びセパレータが所定方向に積層されており、前記所定方向の一方の側の第１面と、前記第１面の反対側の第２面と、前記第１面と前記第２面の間にあって、前記第１面側又は前記第２面側から見て第１方向に延伸している第１側面と、を有する積層体と、
前記第１電極に電気的に接続され、前記第１方向において前記積層体の両側のうちの一方に位置する第１リードと、
前記積層体を包む１枚のシートからなり、前記第１面から前記第２面にかけて前記シートが前記第１側面に沿って折り返された第１部分と、前記第１方向において前記第１部分の両外側のうち前記第１リードが位置する側に位置していて、前記シートの前記第１部分より外側へ突出した折り返し部分が、前記第１方向に交わる方向に沿って折り曲げられている第２部分と、を含む外装材と、
を備える電池が提供される。 According to the invention,
comprising a first electrode, a second electrode and a separator , wherein the first electrode, the second electrode and the separator are laminated in a predetermined direction such that the first electrode and the second electrode are separated by the separator; a first surface on one side in the predetermined direction, a second surface on the opposite side of the first surface, and between the first surface and the second surface on the side of the first surface or the side of the second surface a first side surface extending in a first direction when viewed from above;
a first lead electrically connected to the first electrode and positioned on one of both sides of the laminate in the first direction;
A first portion consisting of one sheet that wraps the laminate, the sheet being folded back along the first side from the first surface to the second surface, and the first portion in the first direction. A second sheet that is located on the side where the first lead is located among the two outer sides, and in which a folded portion protruding outward from the first portion of the sheet is folded along a direction intersecting the first direction. a cladding comprising a portion;
A battery is provided comprising:

本発明によれば、外装材の一部分の外側への突出を抑えることができる。 ADVANTAGE OF THE INVENTION According to this invention, the protrusion to the outside of a part of exterior material can be suppressed.

上述した目的、およびその他の目的、特徴および利点は、以下に述べる好適な実施の形態、およびそれに付随する以下の図面によってさらに明らかになる。 The above objectives, as well as other objectives, features and advantages, will become further apparent from the preferred embodiments described below and the accompanying drawings below.

（ａ）は、実施形態１に係る電池の上面図であり、（ｂ）は、実施形態１に係る電池の右側面図であり、（ｃ）は、実施形態１に係る電池の左側面図であり、（ｄ）は、実施形態１に係る電池の正面図である。(a) is a top view of the battery according to Embodiment 1, (b) is a right side view of the battery according to Embodiment 1, and (c) is a left side view of the battery according to Embodiment 1. , and (d) is a front view of the battery according to Embodiment 1. FIG. （ａ）は、図１に示した電池に用いられる積層体の上面図であり、（ｂ）は、図１に示した電池に用いられる積層体の右側面図である。(a) is a top view of a laminate used in the battery shown in FIG. 1, and (b) is a right side view of the laminate used in the battery shown in FIG. （ａ）は、図１に示した電池を製造するために用いられる外装材の上面図であり、（ｂ）は、図１に示した電池を製造するために用いられる外装材の正面図であり、（ｂ）は、図１に示した電池を製造するために用いられる外装材の背面図である。(a) is a top view of an exterior material used to manufacture the battery shown in FIG. 1, and (b) is a front view of an exterior material used to manufacture the battery shown in FIG. 1. (b) is a rear view of an exterior material used to manufacture the battery shown in FIG. （ａ）は、図１に示した電池の製造プロセスの途中の上面図であり、（ｂ）は、図１に示した電池の製造プロセスの途中の右側面図であり、（ｃ）は、図１に示した電池の製造プロセスの途中の左側面図であり、（ｄ）は、図１に示した電池の製造プロセスの途中の正面図である。(a) is a top view during the manufacturing process of the battery shown in FIG. 1, (b) is a right side view during the manufacturing process of the battery shown in FIG. FIG. 2D is a left side view during the manufacturing process of the battery shown in FIG. 1, and (d) is a front view during the manufacturing process of the battery shown in FIG. 外装材の第２部分を折り曲げる方法の変形例を説明するための図である。It is a figure for demonstrating the modification of the method of folding the 2nd part of an exterior material. （ａ）は、実施形態２に係る電池の上面図であり、（ｂ）は、実施形態２に係る電池の右側面図であり、（ｃ）は、実施形態２に係る電池の左側面図であり、（ｄ）は、実施形態２に係る電池の正面図である。(a) is a top view of the battery according to Embodiment 2, (b) is a right side view of the battery according to Embodiment 2, and (c) is a left side view of the battery according to Embodiment 2. , and (d) is a front view of a battery according to Embodiment 2. FIG. （ａ）は、図６に示した電池の製造プロセスの途中の上面図であり、（ｂ）は、図６に示した電池の製造プロセスの途中の右側面図であり、（ｃ）は、図６に示した電池の製造プロセスの途中の左側面図であり、（ｄ）は、図６に示した電池の製造プロセスの途中の正面図である。(a) is a top view during the manufacturing process of the battery shown in FIG. 6, (b) is a right side view during the manufacturing process of the battery shown in FIG. 7 is a left side view during the manufacturing process of the battery shown in FIG. 6, and (d) is a front view during the manufacturing process of the battery shown in FIG. 6. FIG.

以下、本発明の実施の形態について、図面を用いて説明する。尚、すべての図面において、同様な構成要素には同様の符号を付し、適宜説明を省略する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in all the drawings, the same constituent elements are denoted by the same reference numerals, and the description thereof will be omitted as appropriate.

（実施形態１）
図１（ａ）は、実施形態１に係る電池１０の上面図である。図１（ｂ）は、実施形態１に係る電池１０の右側面図である。図１（ｃ）は、実施形態１に係る電池１０の左側面図である。図１（ｄ）は、実施形態１に係る電池１０の正面図である。図２（ａ）は、図１に示した電池１０に用いられる積層体１００の上面図である。図２（ｂ）は、図１に示した電池１０に用いられる積層体１００の右側面図である。図３（ａ）は、図１に示した電池１０を製造するために用いられる外装材２００の上面図である。図３（ｂ）は、図１に示した電池１０を製造するために用いられる外装材２００の正面図である。図３（ｂ）は、図１に示した電池１０を製造するために用いられる外装材２００の背面図である。(Embodiment 1)
FIG. 1(a) is a top view of the battery 10 according to Embodiment 1. FIG. FIG. 1(b) is a right side view of the battery 10 according to Embodiment 1. FIG. FIG. 1(c) is a left side view of the battery 10 according to Embodiment 1. FIG. FIG. 1(d) is a front view of the battery 10 according to Embodiment 1. FIG. FIG. 2(a) is a top view of the laminate 100 used in the battery 10 shown in FIG. FIG. 2(b) is a right side view of the laminate 100 used in the battery 10 shown in FIG. FIG. 3(a) is a top view of the exterior material 200 used to manufacture the battery 10 shown in FIG. FIG. 3(b) is a front view of the exterior material 200 used to manufacture the battery 10 shown in FIG. FIG. 3(b) is a rear view of the exterior material 200 used to manufacture the battery 10 shown in FIG.

図１を用いて、電池１０の概要を説明する。電池１０は、積層体１００及び外装材２００を備えている。積層体１００は、第１電極１１０、第２電極１２０及びセパレータ１３０を含んでいる。外装材２００は、積層体１００を包んでいる。積層体１００は、第１面１０２ａ、第２面１０２ｂ及び第１側面１０４ａを有している。第２面１０２ｂは、第１面１０２ａの反対側にある。第１側面１０４ａは、第１面１０２ａと第２面１０２ｂの間にあって、第１面１０２ａ側又は第２面１０２ｂ側（例えば、図１（ａ））から見て、第１方向（図内のＸ方向）に延伸している。外装材２００は、第１部分２００ａ及び第２部分２００ｂを含んでいる。外装材２００の第１部分２００ａは、積層体１００の第１側面１０４ａに沿っている。外装材２００の第２部分２００ｂは、第１方向（図内のＸ方向）において第１部分２００ａの両外側のうちの一方にある。外装材２００の第２部分２００ｂは、第１方向（図内のＸ方向）に交わる方向に沿って折り曲げられている。 An outline of the battery 10 will be described with reference to FIG. A battery 10 includes a laminate 100 and an exterior material 200 . The laminate 100 includes a first electrode 110 , a second electrode 120 and a separator 130 . The exterior material 200 wraps the laminate 100 . The laminate 100 has a first surface 102a, a second surface 102b and a first side surface 104a. The second side 102b is opposite the first side 102a. The first side surface 104a is between the first surface 102a and the second surface 102b, and is viewed from the first surface 102a side or the second surface 102b side (for example, FIG. 1(a)) in the first direction ( X direction). The exterior material 200 includes a first portion 200a and a second portion 200b. A first portion 200 a of the exterior material 200 extends along the first side surface 104 a of the laminate 100 . The second portion 200b of the exterior material 200 is on one of both outer sides of the first portion 200a in the first direction (the X direction in the drawing). The second portion 200b of the exterior material 200 is bent along a direction crossing the first direction (the X direction in the drawing).

上述した構成によれば、外装材２００の一部分、すなわち、第２部分２００ｂの外側への突出を抑えることができる。詳細を後述するように、積層体１００の表面に沿って外装材２００が積層体１００に接するように積層体１００を封止すると、外装材２００の第２部分２００ｂが外装材２００の第１部分２００ａよりも外側に突出することを本発明者は新規に見出した。外装材２００の第１部分２００ａの突出は、一定の条件において、特に、積層体１００の第１側面１０４ａが下方を向くように電池１０を載置する場合に望ましくない。上述した構成においては、外装材２００の第２部分２００ｂが、第１方向（図内のＸ方向）に交わる方向に沿って折り曲げられており、したがって、外装材２００の第２部分２００ｂの外側への突出を抑えることができる。 According to the configuration described above, it is possible to suppress outward protrusion of a portion of the exterior material 200, that is, the second portion 200b. As will be described later in detail, when the laminate 100 is sealed so that the exterior material 200 is in contact with the laminate 100 along the surface of the laminate 100, the second portion 200b of the exterior material 200 becomes the first portion of the exterior material 200. The present inventor has newly discovered that it protrudes outward from 200a. The protrusion of the first portion 200a of the packaging material 200 is not desirable under certain conditions, especially when the battery 10 is placed so that the first side surface 104a of the stack 100 faces downward. In the configuration described above, the second portion 200b of the exterior material 200 is bent along a direction that intersects with the first direction (the X direction in the drawing). protrusion can be suppressed.

次に、図２を用いて、積層体１００の詳細を説明する。 Next, details of the laminate 100 will be described with reference to FIG.

積層体１００は、第１電極１１０、第２電極１２０及びセパレータ１３０を含んでいる。第１電極１１０及び第２電極１２０は、互いに異なる極性を有しており、それぞれ、正極及び負極であってもよいし、又は、それぞれ、負極及び正極であってもよい。第１電極１１０、第２電極１２０及びセパレータ１３０は、第１電極１１０と第２電極１２０がセパレータ１３０によって隔てられるように一方向（図内のＺ方向）に積層されている。積層体１００は、複数の第１電極１１０及び複数の第２電極１２０を含んでいてもよい。この場合、隣り合う第１電極１１０と第２電極１２０がセパレータ１３０によって隔てられる。 The laminate 100 includes a first electrode 110 , a second electrode 120 and a separator 130 . The first electrode 110 and the second electrode 120 have different polarities and may be positive and negative, respectively, or negative and positive, respectively. The first electrode 110 , the second electrode 120 and the separator 130 are laminated in one direction (the Z direction in the figure) so that the first electrode 110 and the second electrode 120 are separated by the separator 130 . The laminate 100 may include multiple first electrodes 110 and multiple second electrodes 120 . In this case, the adjacent first electrode 110 and second electrode 120 are separated by the separator 130 .

積層体１００は、実質的に直方体の形状を有している。積層体１００は、第１面１０２ａ、第２面１０２ｂ、第１側面１０４ａ、第２側面１０４ｂ、第３側面１０４ｃ及び第４側面１０４ｄを有している。第２面１０２ｂは、第１面１０２ａの反対側にある。第１側面１０４ａは、第１面１０２ａと第２面１０２ｂの間にある。第２側面１０４ｂは、第１側面１０４ａの反対側にある。第３側面１０４ｃは、第１側面１０４ａと第２側面１０４ｂの間にある。第４側面１０４ｄは、第３側面１０４ｃの反対側にある。積層体１００は、第１面１０２ａと第２面１０２ｂの間に厚さＴを有しており、第１側面１０４ａと第２側面１０４ｂの間に幅Ｗを有しており、第３側面１０４ｃと第４側面１０４ｄの間に長さＬを有している。 The laminate 100 has a substantially rectangular parallelepiped shape. The laminate 100 has a first surface 102a, a second surface 102b, a first side surface 104a, a second side surface 104b, a third side surface 104c and a fourth side surface 104d. The second side 102b is opposite the first side 102a. The first side 104a is between the first side 102a and the second side 102b. The second side 104b is opposite the first side 104a. The third side 104c is between the first side 104a and the second side 104b. The fourth side 104d is opposite the third side 104c. The laminate 100 has a thickness T between the first side 102a and the second side 102b, a width W between the first side 104a and the second side 104b, and a third side 104c. and the fourth side 104d.

図２に示す例では、積層体１００の長さＬは、積層体１００の幅Ｗよりも大きくなっている。幅Ｗに対する長さＬの比Ｌ／Ｗが大きいと、積層体１００の第１側面１０４ａ又は第２側面１０４ｂが下方を向くように積層体１００を載置しやすくなる。積層体１００の第１側面１０４ａ又は第２側面１０４ｂが下方を向くように積層体１００を安定的に載置させるため、上述した比Ｌ／Ｗを例えば２．０超にすることができる。 In the example shown in FIG. 2 , the length L of the laminate 100 is greater than the width W of the laminate 100 . When the ratio L/W of the length L to the width W is large, the laminate 100 can be easily placed so that the first side surface 104a or the second side surface 104b of the laminate 100 faces downward. In order to stably place the laminate 100 so that the first side surface 104a or the second side surface 104b of the laminate 100 faces downward, the ratio L/W can be set to, for example, more than 2.0.

積層体１００の第３側面１０４ｃからは、第１リード１１２が突出している。第１リード１１２は、積層体１００の第１電極１１０に電気的に接続している。図１に示すように、第１リード１１２のうちの積層体１００に近い部分は、外装材２００によって封止され、第１リード１１２のうちの積層体１００から離れた部分は、外装材２００から露出する。したがって、積層体１００の第１電極１１０は、第１リード１１２を介して、外装材２００の外部の部材と電気的に接続することができる。 A first lead 112 protrudes from the third side surface 104 c of the laminate 100 . The first lead 112 is electrically connected to the first electrode 110 of the laminate 100 . As shown in FIG. 1 , a portion of the first lead 112 near the laminate 100 is sealed by the packaging material 200 , and a portion of the first lead 112 away from the laminate 100 is sealed from the packaging material 200 . expose. Therefore, the first electrode 110 of the laminate 100 can be electrically connected to a member outside the exterior material 200 via the first lead 112 .

積層体１００の第４側面１０４ｄからは、第２リード１２２が突出している。第２リード１２２は、積層体１００の第２電極１２０に電気的に接続している。図１に示すように、第２リード１２２のうちの積層体１００に近い部分は、外装材２００によって封止され、第２リード１２２のうちの積層体１００から離れた部分は、外装材２００から露出する。したがって、積層体１００の第２電極１２０は、第２リード１２２を介して、外装材２００の外部の部材と電気的に接続することができる。 A second lead 122 protrudes from the fourth side surface 104 d of the laminate 100 . The second lead 122 is electrically connected to the second electrode 120 of the laminate 100 . As shown in FIG. 1 , a portion of the second lead 122 near the laminate 100 is sealed by the exterior material 200 , and a portion of the second lead 122 away from the laminate 100 is sealed from the exterior material 200 . expose. Therefore, the second electrode 120 of the laminate 100 can be electrically connected to a member outside the exterior material 200 via the second lead 122 .

次に、図３を用いて、外装材２００の詳細を説明する。 Next, details of the exterior material 200 will be described with reference to FIG.

外装材２００は、筒状の形状を有している。外装材２００は、シール部２０２を有している。シール部２０２では、外装材２００の一部分同士が例えば溶着によって互いに貼り合わされている。シール部２０２によって外装材２００の側面が封止されている。 The exterior material 200 has a tubular shape. The exterior material 200 has a seal portion 202 . In the seal portion 202, portions of the exterior material 200 are attached to each other by, for example, welding. The side surface of the exterior material 200 is sealed by the sealing portion 202 .

外装材２００は、ある程度の柔軟性を有している。したがって、図１に示すように外装材２００によって積層体１００を封止する場合に、積層体１００の表面に沿って外装材２００が接するように外装材２００は変形することができる。 The exterior material 200 has flexibility to some extent. Therefore, when the laminate 100 is sealed with the exterior material 200 as shown in FIG.

図４（ａ）は、図１に示した電池１０の製造プロセスの途中の上面図である。図４（ｂ）は、図１に示した電池１０の製造プロセスの途中の右側面図である。図４（ｃ）は、図１に示した電池１０の製造プロセスの途中の左側面図である。図４（ｄ）は、図１に示した電池１０の製造プロセスの途中の正面図である。 FIG. 4(a) is a top view during the manufacturing process of the battery 10 shown in FIG. FIG. 4(b) is a right side view of the battery 10 shown in FIG. 1 during the manufacturing process. FIG. 4(c) is a left side view of the battery 10 shown in FIG. 1 during the manufacturing process. FIG. 4(d) is a front view during the manufacturing process of the battery 10 shown in FIG.

図２、図３及び図４を用いて、図１に示した電池１０の製造方法を説明する。 A method of manufacturing the battery 10 shown in FIG. 1 will be described with reference to FIGS.

まず、図２に示した積層体１００を図３に示した外装材２００に挿入する。 First, the laminate 100 shown in FIG. 2 is inserted into the exterior material 200 shown in FIG.

次いで、外装材２００の内側の領域の圧力を外装材２００の外側の領域の圧力よりも低くして（例えば、積層体１００及び外装材２００を大気圧下に置いて、外装材２００の内部の領域の圧力を負圧にする。）、積層体１００の表面に沿って外装材２００が積層体１００に接するようにする。 Next, the pressure in the region inside the exterior material 200 is made lower than the pressure in the region outside the exterior material 200 (for example, the laminated body 100 and the exterior material 200 are placed under atmospheric pressure, and the pressure inside the exterior material 200 is increased. The pressure in the area is made negative.), and the exterior material 200 is brought into contact with the laminate 100 along the surface of the laminate 100 .

次いで、積層体１００の周囲において、外装材２００のうちの互いに重なる部分同士を互いに溶着させる。このようにして、図４に示すように、外装材２００によって積層体１００が封止される。溶着によって、外装材２００には、図１に示したように、シール部２０４が形成される。シール部２０４は、積層体１００の第３側面１０４ｃ、第２側面１０４ｂ及び第４側面１０４ｄに沿って連続的に広がっている。シール部２０４によって積層体１００を封止することができる。 Next, in the periphery of the laminate 100, the overlapping portions of the exterior material 200 are welded to each other. In this manner, the laminate 100 is sealed with the exterior material 200 as shown in FIG. By welding, a seal portion 204 is formed in the exterior material 200 as shown in FIG. The seal portion 204 extends continuously along the third side 104c, the second side 104b and the fourth side 104d of the laminate 100. As shown in FIG. The laminate 100 can be sealed by the sealing portion 204 .

図４に示すように、外装材２００は、第１部分２００ａ、第２部分２００ｂ及び第３部分２００ｃを有している。第１部分２００ａは、積層体１００の第１側面１０４ａに沿っている。第２部分２００ｂは、積層体１００の長さ方向（図内のＸ方向）において第１部分２００ａの両外側のうちの一方（図４に示す例では第１リード１１２側）にある。第２部分２００ｂは、外装材２００のうちの積層体１００の幅方向（図内のＹ方向）に沿った折り返し部分を有している。第３部分２００ｃは、積層体１００の長さ方向（図内のＸ方向）において第１部分２００ａの両外側のうちのもう一方（図４に示す例では第２リード１２２側）にある。第３部分２００ｃは、外装材２００のうちの積層体１００の幅方向（図内のＹ方向）に沿った折り返し部分を有している。 As shown in FIG. 4, the exterior material 200 has a first portion 200a, a second portion 200b and a third portion 200c. The first portion 200 a extends along the first side surface 104 a of the laminate 100 . The second portion 200b is located on one of both outer sides of the first portion 200a (in the example shown in FIG. 4, the first lead 112 side) in the longitudinal direction of the laminate 100 (X direction in the figure). The second portion 200b has a folded portion of the exterior material 200 along the width direction of the laminate 100 (Y direction in the drawing). The third portion 200c is located on the other (the second lead 122 side in the example shown in FIG. 4) of both outer sides of the first portion 200a in the longitudinal direction (the X direction in the figure) of the laminate 100 . The third portion 200c has a folded portion along the width direction (the Y direction in the drawing) of the laminate 100 of the exterior material 200. As shown in FIG.

図４（ａ）に示すように、外装材２００の第２部分２００ｂ及び第３部分２００ｃは、外装材２００の第１部分２００ａよりも外側に向けて距離Δだけ突出している。第２部分２００ｂ及び第３部分２００ｃの突出は、第１部分２００ａが積層体１００の第１側面１０４ａに沿うことができるのに対して、第２部分２００ｂ及び第２部分２００ｂが第１部分２００ａよりも外側で折り返す必要があるために生じる。第２部分２００ｂ及び第３部分２００ｃの突出の距離Δは、おおよそ、積層体１００の厚さＴの半分とみなすことができる。つまり、距離Δは、積層体１００の厚さＴが大きくなるほど大きくなる。 As shown in FIG. 4A, the second portion 200b and the third portion 200c of the exterior material 200 protrude outward from the first portion 200a of the exterior material 200 by a distance Δ. The projections of the second portion 200b and the third portion 200c are such that the first portion 200a can follow the first side surface 104a of the laminate 100, while the second portion 200b and the second portion 200b are projected from the first portion 200a. It occurs because it is necessary to wrap outside the . The projection distance Δ of the second portion 200 b and the third portion 200 c can be regarded as approximately half the thickness T of the laminate 100 . That is, the distance Δ increases as the thickness T of the laminate 100 increases.

積層体１００の厚さＴが大きくなるほど、第２部分２００ｂ及び第３部分２００ｃの突出の距離Δは無視できなくなるほど大きくなる。特に、積層体１００の厚さＴが５．０ｍｍ以上であるとき、距離Δはおおよそ２．５ｍｍとなり、第２部分２００ｂ及び第３部分２００ｃの突出が、一定の条件において、特に、積層体１００の第１側面１０４ａが下方を向くように電池１０を載置する場合において、妨げになる。 As the thickness T of the laminate 100 increases, the projection distance Δ of the second portion 200b and the third portion 200c increases to the point where it cannot be ignored. In particular, when the thickness T of the laminate 100 is 5.0 mm or more, the distance Δ is about 2.5 mm, and the protrusion of the second portion 200b and the third portion 200c is less than the thickness of the laminate 100 under certain conditions. When the battery 10 is placed so that the first side surface 104a of is directed downward, it becomes an obstacle.

図１に示す例では、外装材２００の第２部分２００ｂ及び第３部分２００ｃは、積層体１００の厚さ方向（図内のＺ方向）に沿うように折り曲げられている。他の例において、外装材２００の第２部分２００ｂ及び第３部分２００ｃは、積層体１００の幅方向（図内のＹ方向）に沿って１８０度折り返すように折り曲げられていてもよい。したがって、外装材２００の第２部分２００ｂ及び第３部分２００ｃの外側への突出を抑えることができる。このような突出の抑制は、第２部分２００ｂ及び第３部分２００ｃの突出の距離Δが無視できなくなるほど大きい場合、例えば、積層体１００の厚さＴが５．０ｍｍ以上、７．５ｍｍ以上又は１０．０ｍｍ以上であるとき、特に有意義である。 In the example shown in FIG. 1, the second portion 200b and the third portion 200c of the exterior material 200 are bent along the thickness direction of the laminate 100 (the Z direction in the drawing). In another example, the second portion 200b and the third portion 200c of the exterior material 200 may be folded 180 degrees along the width direction of the laminate 100 (the Y direction in the drawing). Therefore, the outward protrusion of the second portion 200b and the third portion 200c of the exterior material 200 can be suppressed. Such protrusion suppression is effective when the protrusion distance Δ of the second portion 200b and the third portion 200c is so large that it cannot be ignored, for example, when the thickness T of the laminate 100 is 5.0 mm or more, 7.5 mm or more, or It is particularly significant when it is 10.0 mm or more.

さらに、図１に示す例では、外装材２００のうちのシール部２０２及びその周辺（図４）が除去されている。 Furthermore, in the example shown in FIG. 1, the sealing portion 202 of the exterior material 200 and its periphery (FIG. 4) are removed.

図４に示す例では、外装材２００は、外装材２００のシール部２０２が積層体１００の第２側面１０４ｂの外側に位置するように積層体１００を包んでいる。したがって、図１において、外装材２００は、互いに貼り合わされた部分を積層体１００の第２側面１０４ｂの外側に有するようになる。さらに、外装材２００は、積層体１００の幅方向（図内のＹ方向）に沿った折り返し部分を、積層体１００の第１側面１０４ａ側及び第２側面１０４ｂ側のうち第１側面１０４ａ側にのみ有するようになる。 In the example shown in FIG. 4 , the exterior material 200 wraps the laminate 100 such that the sealing portion 202 of the exterior material 200 is positioned outside the second side surface 104 b of the laminate 100 . Therefore, in FIG. 1 , the exterior material 200 has the portion bonded together outside the second side surface 104 b of the laminate 100 . Further, the exterior material 200 is arranged such that the folded portion along the width direction (the Y direction in the drawing) of the laminate 100 is on the first side 104a side of the first side 104a side and the second side 104b side of the laminate 100. will have only

図５は、外装材２００の第２部分２００ｂを折り曲げる方法の変形例を説明するための図である。 FIG. 5 is a diagram for explaining a modification of the method of bending the second portion 200b of the exterior material 200. FIG.

本変形例において、外装材２００の第２部分２００ｂは、以下のようにして、折り曲げられる。図５では、第１部分２００ａ（図１及び図４）に沿った領域を破線で示している。 In this modified example, the second portion 200b of the exterior material 200 is folded as follows. In FIG. 5, the area along the first portion 200a (FIGS. 1 and 4) is indicated by dashed lines.

まず、図５（ａ）に示すように、第１リード１１２及び外装材２００の第２部分２００ｂを積層体１００の厚さ方向（図内のＺ方向）に沿って折り曲げる。 First, as shown in FIG. 5A, the first lead 112 and the second portion 200b of the exterior material 200 are bent along the thickness direction of the laminate 100 (the Z direction in the figure).

次いで、図５（ｂ）に示すように、外装材２００の第２部分２００ｂを積層体１００の幅方向（図内のＹ方向）に沿って折り返すように折り曲げる。 Next, as shown in FIG. 5B, the second portion 200b of the exterior material 200 is folded back along the width direction of the laminate 100 (the Y direction in the drawing).

次いで、図５（ｃ）に示すように、第１リード１１２及び外装材２００の第２部分２００ｂを前方に向けて戻す。図５（ｃ）に示すように、外装材２００の第２部分２００ｂは、外装材２００の第１部分２００ａよりも内側に位置するようになる。 Next, as shown in FIG. 5(c), the first lead 112 and the second portion 200b of the exterior material 200 are returned forward. As shown in FIG. 5(c), the second portion 200b of the exterior material 200 is located inside the first portion 200a of the exterior material 200. As shown in FIG.

（実施形態２）
図６（ａ）は、実施形態２に係る電池１０の上面図である。図６（ｂ）は、実施形態２に係る電池１０の右側面図である。図６（ｃ）は、実施形態２に係る電池１０の左側面図である。図６（ｄ）は、実施形態２に係る電池１０の正面図である。図７（ａ）は、図６に示した電池１０の製造プロセスの途中の上面図である。図７（ｂ）は、図６に示した電池１０の製造プロセスの途中の右側面図である。図７（ｃ）は、図６に示した電池１０の製造プロセスの途中の左側面図である。図７（ｄ）は、図６に示した電池１０の製造プロセスの途中の正面図である。本実施形態に係る電池１０は、以下の点を除いて、実施形態１に係る電池１０と同様である。(Embodiment 2)
FIG. 6A is a top view of the battery 10 according to Embodiment 2. FIG. FIG. 6(b) is a right side view of the battery 10 according to Embodiment 2. FIG. FIG. 6(c) is a left side view of the battery 10 according to Embodiment 2. FIG. FIG. 6D is a front view of the battery 10 according to Embodiment 2. FIG. FIG. 7(a) is a top view during the manufacturing process of the battery 10 shown in FIG. FIG. 7(b) is a right side view of the battery 10 shown in FIG. 6 during the manufacturing process. FIG. 7(c) is a left side view of the battery 10 shown in FIG. 6 during the manufacturing process. FIG. 7(d) is a front view during the manufacturing process of the battery 10 shown in FIG. The battery 10 according to this embodiment is the same as the battery 10 according to Embodiment 1 except for the following points.

本実施形態に係る電池１０の製造プロセスにおいても、図２に示した積層体１００を図３に示した外装材２００に挿入する。次いで、積層体１００を外装材２００によって封止する。 Also in the manufacturing process of the battery 10 according to the present embodiment, the laminate 100 shown in FIG. 2 is inserted into the exterior material 200 shown in FIG. Next, the laminate 100 is sealed with the exterior material 200 .

図７に示す例では、外装材２００は、外装材２００のシール部２０２が積層体１００の第１面１０２ａの外側に位置するように積層体１００を包んでいる。したがって、図６において、外装材２００は、互いに貼り合わされた部分を積層体１００の第１面１０２ａの外側に有するようになる。さらに、外装材２００は、積層体１００の幅方向（図内のＹ方向）に沿った折り返し部分を、積層体１００の第１側面１０４ａ側及び第２側面１０４ｂ側の双方に有するようになる。 In the example shown in FIG. 7 , the exterior material 200 wraps the laminate 100 such that the seal portion 202 of the exterior material 200 is positioned outside the first surface 102 a of the laminate 100 . Therefore, in FIG. 6 , the exterior material 200 has the portions bonded together outside the first surface 102 a of the laminate 100 . Further, the exterior material 200 has folded portions along the width direction (the Y direction in the drawing) of the laminate 100 on both the first side surface 104a side and the second side surface 104b side of the laminate 100 .

図７に示す例において、外装材２００は、第４部分２００ｄ、第５部分２００ｅ及び第６部分２００ｆを含んでいる。第４部分２００ｄは、積層体１００の第２側面１０４ｂに沿っている。第５部分２００ｅは、積層体１００の長さ方向（図内のＸ方向）において第４部分２００ｄの両外側のうちの一方（図７に示す例では第１リード１１２側）にある。第４部分２００ｄは、外装材２００のうちの積層体１００の幅方向（図内のＹ方向）に沿った折り返し部分を有している。第６部分２００ｆは、積層体１００の長さ方向（図内のＸ方向）において第４部分２００ｄの両外側のうちのもう一方（図４に示す例では第２リード１２２側）にある。第６部分２００ｆは、外装材２００のうちの積層体１００の幅方向（図内のＹ方向）に沿った折り返し部分を有している。 In the example shown in FIG. 7, the exterior material 200 includes a fourth portion 200d, a fifth portion 200e and a sixth portion 200f. The fourth portion 200d extends along the second side surface 104b of the laminate 100. As shown in FIG. The fifth portion 200e is located on one of both outer sides of the fourth portion 200d in the longitudinal direction (the X direction in the figure) of the laminate 100 (the first lead 112 side in the example shown in FIG. 7). The fourth portion 200d has a folded portion along the width direction (the Y direction in the drawing) of the laminate 100 of the exterior material 200. As shown in FIG. The sixth portion 200f is located on the other (the second lead 122 side in the example shown in FIG. 4) of both outer sides of the fourth portion 200d in the longitudinal direction (the X direction in the drawing) of the laminate 100 . The sixth portion 200f has a folded portion along the width direction (the Y direction in the drawing) of the laminate 100 of the exterior material 200 .

図７（ａ）に示すように、外装材２００の第５部分２００ｅ及び第６部分２００ｆは、外装材２００の第４部分２００ｄよりも外側に向けて距離Δだけ突出している。第５部分２００ｅ及び第６部分２００ｆの突出は、第２部分２００ｂ及び第３部分２００ｃの突出について上述した理由と同様にして、第４部分２００ｄが積層体１００の第２側面１０４ｂに沿うことができるのに対して、第５部分２００ｅ及び第６部分２００ｆが第４部分２００ｄよりも外側で折り返す必要があるために生じる。 As shown in FIG. 7A, the fifth portion 200e and the sixth portion 200f of the exterior material 200 protrude outwardly by a distance Δ from the fourth portion 200d of the exterior material 200. As shown in FIG. The projection of the fifth portion 200e and the sixth portion 200f is such that the fourth portion 200d can follow the second side surface 104b of the laminate 100 for the same reason as described above for the projection of the second portion 200b and the third portion 200c. This is because the fifth portion 200e and the sixth portion 200f must be folded outside the fourth portion 200d, whereas the fourth portion 200d can be folded.

図６に示す例では、外装材２００の第２部分２００ｂ及び第３部分２００ｃだけでなく、第５部分２００ｅ及び第６部分２００ｆも、第１方向（図内のＸ方向）に交わる方向に沿って折り曲げられている。したがって、外装材２００の第２部分２００ｂ及び第３部分２００ｃの外側への突出及び外装材２００の第５部分２００ｅ及び第６部分２００ｆの外側への突出を抑えることができる。 In the example shown in FIG. 6, not only the second portion 200b and the third portion 200c of the exterior material 200, but also the fifth portion 200e and the sixth portion 200f are arranged along the direction crossing the first direction (the X direction in the drawing). folded. Therefore, the outward protrusion of the second portion 200b and the third portion 200c of the exterior member 200 and the outward protrusion of the fifth portion 200e and the sixth portion 200f of the exterior member 200 can be suppressed.

さらに、図６に示す例では、外装材２００のうちのシール部２０２及びその周辺（図７）が除去されている。 Furthermore, in the example shown in FIG. 6, the sealing portion 202 of the exterior material 200 and its periphery (FIG. 7) are removed.

さらに、図６に示す例では、外装材２００は、積層体１００の第１面１０２ａ、第３側面１０４ｃ及び第４側面１０４ｄに沿ってシール部２０４を有している。シール部２０４は、例えば外装材２００の溶着によって形成される。シール部２０４によって積層体１００を封止することができる。特に第１面１０２ａに沿ったシール部２０４は、積層体１００の表面（第１面１０２ａ）に沿って折り曲げられている。 Furthermore, in the example shown in FIG. 6, the exterior material 200 has seal portions 204 along the first surface 102a, the third side surface 104c, and the fourth side surface 104d of the laminate 100. As shown in FIG. The seal portion 204 is formed by welding the exterior material 200, for example. The laminate 100 can be sealed by the sealing portion 204 . In particular, the seal portion 204 along the first surface 102a is bent along the surface of the laminate 100 (first surface 102a).

以上、図面を参照して本発明の実施形態について述べたが、これらは本発明の例示であり、上記以外の様々な構成を採用することもできる。
以下、参考形態の例を付記する。
１． 第１電極、第２電極及びセパレータを含む積層体と、
前記積層体を包む外装材と、
を備え、
前記積層体は、第１面と、前記第１面の反対側の第２面と、前記第１面と前記第２面の間にあって、前記第１面側又は前記第２面側から見て第１方向に延伸している第１側面と、を有し、
前記外装材は、前記第１側面に沿った第１部分と、前記第１方向において前記第１部分の両外側のうちの一方にある第２部分と、を含み、
前記外装材の前記第２部分は、前記第１方向に交わる方向に沿って折り曲げられている電池。
２． １．に記載の電池において、
前記外装材は、前記第１方向において前記第１部分の両外側のうちのもう一方にある第３部分を含み、
前記外装材の前記第３部分は、前記第１方向に交わる方向に沿って折り曲げられている電池。
３． １．又は２．に記載の電池において、
前記積層体は、前記第１側面の反対側の第２側面を有し、
前記外装材は、互いに貼り合わされた部分を前記第２側面の外側に有する電池。
４． １．又は２．に記載の電池において、
前記積層体は、前記第１側面の反対側の第２側面を有し、
前記外装材は、前記第２側面に沿った第４部分と、前記第１方向において前記第４部分の両外側のうちの一方にある第５部分と、を含み、
前記外装材の前記第５部分は、前記第１方向に交わる方向に沿って折り曲げられている電池。
５． ４．に記載の電池において、
前記外装材は、前記第１方向において前記第４部分の両外側のうちのもう一方にある第６部分を含み、
前記外装材の前記第６部分は、前記第１方向に交わる方向に沿って折り曲げられている電池。
６． ４．又は５．に記載の電池において、
前記外装材は、互いに貼り合わされた部分を前記第１面の外側に有する電池。
７． １．から６．までのいずれか一つに記載の電池において、
前記積層体は、前記第１面と前記第２面の間に５．０ｍｍ以上の厚さを有する電池。 Although the embodiments of the present invention have been described above with reference to the drawings, these are examples of the present invention, and various configurations other than those described above can also be adopted.
Examples of reference forms are added below.
1. a laminate including a first electrode, a second electrode and a separator;
an exterior material that wraps the laminate;
with
The laminated body has a first surface, a second surface opposite to the first surface, and between the first surface and the second surface, when viewed from the first surface side or the second surface side. a first side extending in a first direction;
the exterior material includes a first portion along the first side surface and a second portion located on one of both outer sides of the first portion in the first direction;
The battery, wherein the second portion of the exterior material is bent along a direction crossing the first direction.
2. 1. In the battery described in
The exterior material includes a third portion located on the other of both outer sides of the first portion in the first direction,
The battery, wherein the third portion of the exterior material is bent along a direction crossing the first direction.
3. 1. or 2. In the battery described in
The laminate has a second side opposite the first side,
The battery in which the exterior material has a portion bonded to each other on the outside of the second side surface.
4. 1. or 2. In the battery described in
The laminate has a second side opposite the first side,
the exterior material includes a fourth portion along the second side surface and a fifth portion located on one of both outer sides of the fourth portion in the first direction;
The battery, wherein the fifth portion of the exterior material is bent along a direction crossing the first direction.
5. 4. In the battery described in
the exterior material includes a sixth portion located on the other of both outer sides of the fourth portion in the first direction;
The battery, wherein the sixth portion of the exterior material is bent along a direction crossing the first direction.
6. 4. or 5. In the battery described in
The battery in which the exterior material has a portion bonded to each other on the outside of the first surface.
7. 1. to 6. In the battery according to any one of
The battery in which the laminate has a thickness of 5.0 mm or more between the first surface and the second surface.

この出願は、２０１７年１２月２０日に出願された日本出願特願２０１７－２４３５５１号を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2017-243551 filed on December 20, 2017, and the entire disclosure thereof is incorporated herein.

Claims (7)

第１電極、第２電極及びセパレータを含み、前記第１電極と前記第２電極とが前記セパレータによって隔てられるように前記第１電極、前記第２電極及びセパレータが所定方向に積層されており、前記所定方向の一方の側の第１面と、前記第１面の反対側の第２面と、前記第１面と前記第２面の間にあって、前記第１面側又は前記第２面側から見て第１方向に延伸している第１側面と、を有する積層体と、
前記第１電極に電気的に接続され、前記第１方向において前記積層体の両側のうちの一方に位置する第１リードと、
前記積層体を包む１枚のシートからなり、前記第１面から前記第２面にかけて前記シートが前記第１側面に沿って折り返された第１部分と、前記第１方向において前記第１部分の両外側のうち前記第１リードが位置する側に位置していて、前記シートの前記第１部分より外側へ突出した折り返し部分が、前記第１方向に交わる方向に沿って折り曲げられている第２部分と、を含む外装材と、
を備える電池。 comprising a first electrode, a second electrode and a separator , wherein the first electrode, the second electrode and the separator are laminated in a predetermined direction such that the first electrode and the second electrode are separated by the separator; a first surface on one side in the predetermined direction, a second surface on the opposite side of the first surface, and between the first surface and the second surface on the side of the first surface or the side of the second surface a first side surface extending in a first direction when viewed from above;
a first lead electrically connected to the first electrode and positioned on one of both sides of the laminate in the first direction;
A first portion consisting of one sheet that wraps the laminate, the sheet being folded back along the first side from the first surface to the second surface, and the first portion in the first direction. A second sheet that is located on the side where the first lead is located among the two outer sides, and in which a folded portion protruding outward from the first portion of the sheet is folded along a direction intersecting the first direction. a cladding comprising a portion;
battery . 請求項１に記載の電池において、
前記外装材は、前記第１方向において前記第１部分の両外側のうちのもう一方にあって、前記シートの前記第１部分より外側へ突出した折り返し部分が、前記第１方向に交わる方向に沿って折り曲げられている第３部分を含む電池。 The battery of claim 1,
The exterior material is located on the other of both outer sides of the first portion in the first direction, and the folding portion protruding outward from the first portion of the sheet intersects the first direction. A battery including a third portion folded along the . 請求項１又は２に記載の電池において、
前記積層体は、前記第１側面の反対側の第２側面を有し、
前記外装材は、互いに貼り合わされた部分を前記第２側面の外側に有する電池。 In the battery according to claim 1 or 2,
The laminate has a second side opposite the first side,
The battery in which the exterior material has a portion bonded to each other on the outside of the second side surface. 請求項１又は２に記載の電池において、
前記積層体は、前記第１側面の反対側の第２側面を有し、
前記外装材は、前記第１面から前記第２面にかけて前記シートが前記第２側面に沿って折り返された第４部分と、前記第１方向において前記第４部分の両外側のうちの一方にあって、前記シートの前記第４部分より外側へ突出した折り返し部分が、前記第１方向に交わる方向に沿って折り曲げられている第５部分と、を含む電池。 In the battery according to claim 1 or 2,
The laminate has a second side opposite the first side,
The exterior material has a fourth portion in which the sheet is folded back along the second side surface from the first surface to the second surface, and one of both outer sides of the fourth portion in the first direction. a fifth portion in which a folded portion projecting outward from the fourth portion of the sheet is folded along a direction intersecting the first direction . 請求項４に記載の電池において、
前記外装材は、前記第１方向において前記第４部分の両外側のうちのもう一方にあって、前記シートの前記第４部分より外側へ突出した折り返し部分が、前記第１方向に交わる方向に沿って折り曲げられている第６部分を含む電池。 In the battery of claim 4,
The exterior material is located on the other of both outer sides of the fourth portion in the first direction, and the folding portion projecting outward from the fourth portion of the sheet is in a direction intersecting the first direction. A battery including a sixth portion folded along . 請求項４又は５に記載の電池において、
前記外装材は、互いに貼り合わされた部分を前記第１面の外側に有する電池。 In the battery according to claim 4 or 5,
The battery in which the exterior material has a portion bonded to each other on the outside of the first surface. 請求項１から６までのいずれか一項に記載の電池において、
前記積層体は、前記第１面と前記第２面の間に５．０ｍｍ以上の厚さを有する電池。 In the battery according to any one of claims 1 to 6,
The battery in which the laminate has a thickness of 5.0 mm or more between the first surface and the second surface.
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