JP2015210980A5 - - Google Patents
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- JP2015210980A5 JP2015210980A5 JP2014092844A JP2014092844A JP2015210980A5 JP 2015210980 A5 JP2015210980 A5 JP 2015210980A5 JP 2014092844 A JP2014092844 A JP 2014092844A JP 2014092844 A JP2014092844 A JP 2014092844A JP 2015210980 A5 JP2015210980 A5 JP 2015210980A5
- Authority
- JP
- Japan
- Prior art keywords
- separator
- peripheral surface
- wound body
- winding
- adhesive
- 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.)
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- 230000002093 peripheral Effects 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive Effects 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 9
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims 1
Description
このように、第１粘着部１６３ａの長さを前記第２粘着部１６３ｂの長さと第３粘着部１６３ｃの長さのいずれよりも短くすることにより、第１のセパレータ３３の捲き終わり端部３３ｃにおいて粘着テープ１６３から耐熱層３３ｂに作用する剥離方向の力を小さくして、耐熱層３３ｂを樹脂層３３ａから剥離しにくくすることができる。したがって、耐熱層３３ｂの剥離により粘着テープ１６３が剥がれて捲回体３の最外周面から巻き終わり端部３３ｃ、３５ｃが離れてしまうのを防ぐことができる。 In this way, the length of the first adhesive portion 163a is made shorter than both the length of the second adhesive portion 163b and the length of the third adhesive portion 163c, whereby the end end portion 33c of the first separator 33 is rolled. In this case, the force in the peeling direction acting on the heat-resistant layer 33b from the adhesive tape 163 can be reduced to make it difficult to peel the heat-resistant layer 33b from the resin layer 33a. Therefore, the adhesive tape 163 is peeled off due to the peeling of the heat-resistant layer 33b , and the winding end portions 33c and 35c can be prevented from separating from the outermost peripheral surface of the wound body 3.
Claims (5)
該捲回体は、前記第１のセパレータの捲き終わり端部及び前記第２のセパレータの捲き終わり端部が前記正極電極の捲き終わり端部及び前記負極電極の捲き終わり端部よりも捲回方向に突出して重なり合い、前記捲回体の内周側に前記第１のセパレータの捲き終わり端部が配置され、前記捲回体の外周側に前記第２のセパレータの捲き終わり端部が配置され、前記第１のセパレータの捲き終わり端部が前記第２のセパレータの捲き終わり端部よりも捲回方向に突出しており、
前記第２のセパレータの捲き終わり端部の外周面と、前記第１のセパレータの捲き終わり端部の外周面と、前記第２のセパレータの最外周面でかつ前記第１のセパレータの捲き終わり端部を間に介して前記第２のセパレータの捲き終わり端部から離間する位置のそれぞれに接面して貼付される粘着テープを有することを特徴とする二次電池。 A secondary battery having a wound body formed by winding a positive electrode, a first separator, a negative electrode, and a second separator,
該捲wound body, said first direction Kai wound than finish end Maki Maki finishing end portion and said second end and said negative electrode finish end Maki of the separator end Maki of the positive electrode of the separator overlap protrudes, finish end Maki of the first separator is disposed on the inner peripheral side of the wound body, finish end Maki of the second separator is disposed on the outer peripheral side of the wound body, The winding end of the first separator protrudes in the winding direction from the winding end of the second separator;
The outer peripheral surface of the end end portion of the second separator, the outer peripheral surface of the end end portion of the first separator, the outermost peripheral surface of the second separator and the end end of the first separator A secondary battery comprising a pressure-sensitive adhesive tape attached in contact with each of the positions separated from the end portion of the second separator.
前記第２のセパレータは、第２の樹脂層と、該第２の樹脂層の内周面側に設けられた第２の耐熱層を有していることを特徴とする請求項１に記載の二次電池。 The first separator has a first resin layer and a first heat-resistant layer provided on the outer peripheral surface side of the first resin layer,
2. The second separator according to claim 1, wherein the second separator includes a second resin layer and a second heat-resistant layer provided on the inner peripheral surface side of the second resin layer. Secondary battery.
前記第２のセパレータの捲き終わり端部の外周面に接面して固定される第２粘着部と、 前記第１のセパレータの捲き終わり端部の外周面に接面して固定される第１粘着部と、 前記第２のセパレータの最外周面でかつ前記第１のセパレータの捲き終わり端部を間に介して前記第２のセパレータの捲き終わり端部から離間する位置に接面して固定される第３粘着部と、を有し、
前記第１粘着部の長さが、前記第２粘着部の長さと前記第３粘着部の長さのいずれよりも短いことを特徴とする請求項２に記載の二次電池。 The adhesive tape is
A second adhesive portion fixed in contact with the outer peripheral surface of the second end of the second separator; and a first adhesive fixed in contact with the outer peripheral surface of the first end of the first separator. Fixing the adhesive portion in contact with the outermost peripheral surface of the second separator and at a position spaced from the end portion of the second separator through the end portion of the first separator. A third adhesive part,
The secondary battery according to claim 2, wherein a length of the first adhesive portion is shorter than a length of the second adhesive portion and a length of the third adhesive portion.
前記第２のセパレータの捲き終わり端部と前記第１のセパレータの捲き終わり端部と前記粘着テープとが前記捲回体の一方の平坦面上に配置されていることを特徴とする請求項３に記載の二次電池。 The wound body has a flat shape,
The winding end end portion of the second separator, the winding end end portion of the first separator, and the adhesive tape are arranged on one flat surface of the wound body. Secondary battery described in 1.
前記第２のセパレータの捲き終わり端部と前記第１のセパレータの捲き終わり端部と前記粘着テープとが前記捲回体の一方の湾曲面上に配置されていることを特徴とする請求項３に記載の二次電池。 The wound body has a flat shape,
The winding end end of the second separator, the winding end end of the first separator, and the adhesive tape are arranged on one curved surface of the wound body. Secondary battery described in 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014092844A JP6261441B2 (en) | 2014-04-28 | 2014-04-28 | Secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014092844A JP6261441B2 (en) | 2014-04-28 | 2014-04-28 | Secondary battery |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2015210980A JP2015210980A (en) | 2015-11-24 |
| JP2015210980A5 true JP2015210980A5 (en) | 2017-04-06 |
| JP6261441B2 JP6261441B2 (en) | 2018-01-17 |
Family
ID=54613021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014092844A Active JP6261441B2 (en) | 2014-04-28 | 2014-04-28 | Secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6261441B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018147743A (en) * | 2017-03-06 | 2018-09-20 | 株式会社東芝 | Electrode and nonaqueous electrolyte secondary battery |
| JP6654673B2 (en) * | 2017-09-05 | 2020-02-26 | 住友化学株式会社 | Electrode assembly for secondary battery and method of manufacturing electrode assembly for secondary battery |
| JP6665246B2 (en) | 2017-09-05 | 2020-03-13 | 住友化学株式会社 | Electrode assembly for secondary battery and method of manufacturing electrode assembly for secondary battery |
| JP6912333B2 (en) | 2017-09-14 | 2021-08-04 | 住友化学株式会社 | Electrode assembly and non-aqueous electrolyte secondary battery |
| JP7318333B2 (en) * | 2019-06-13 | 2023-08-01 | 株式会社Ｇｓユアサ | Storage element |
| JP7154270B2 (en) * | 2020-11-05 | 2022-10-17 | プライムプラネットエナジー＆ソリューションズ株式会社 | BATTERY AND MANUFACTURING METHOD THEREOF |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3237015B2 (en) * | 1990-08-29 | 2001-12-10 | ソニー株式会社 | Non-aqueous electrolyte secondary battery |
| JP3948121B2 (en) * | 1998-06-16 | 2007-07-25 | 宇部興産株式会社 | Battery and manufacturing method thereof |
| JP4968182B2 (en) * | 2008-05-29 | 2012-07-04 | ソニー株式会社 | Winding electrode body and non-aqueous electrolyte secondary battery |
| JP5811578B2 (en) * | 2011-04-27 | 2015-11-11 | 株式会社Ｇｓユアサ | Power generation element and power generation element termination method |
-
2014
- 2014-04-28 JP JP2014092844A patent/JP6261441B2/en active Active
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