JPWO2022196460A5 - - Google Patents
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- JPWO2022196460A5 JPWO2022196460A5 JP2023507005A JP2023507005A JPWO2022196460A5 JP WO2022196460 A5 JPWO2022196460 A5 JP WO2022196460A5 JP 2023507005 A JP2023507005 A JP 2023507005A JP 2023507005 A JP2023507005 A JP 2023507005A JP WO2022196460 A5 JPWO2022196460 A5 JP WO2022196460A5
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Description
（１）本発明に係る電気化学セルは、少なくとも一つの平面を有し、前記平面内に凹部が形成され、前記平面の周縁部より内側の前記凹部の底面に透孔が形成され、前記透孔の周縁部に融着した第１の樹脂フィルムを介して前記透孔を塞ぐ電極板を有する外装体を備え、前記第１の樹脂フィルムは前記電極板の周縁外方に延出した延出部を有し、前記第１の樹脂フィルムが前記電極板に融着され、前記延出部及び前記電極板の周縁部に第２の樹脂フィルムが固定され、前記透孔が、前記底面のいずれかの側の面に配置された前記電極板により塞がれていることを特徴とする。 (1) The electrochemical cell according to the present invention has at least one plane, a recess is formed in the plane, and a through hole is formed in the bottom surface of the recess inside the peripheral edge of the plane. An exterior body having an electrode plate that closes the through hole via a first resin film that is fused to the periphery of the hole, and the first resin film extends outward from the periphery of the electrode plate. The first resin film is fused to the electrode plate, the second resin film is fixed to the extending portion and the peripheral edge portion of the electrode plate, and the through hole is located on either side of the bottom surface. It is characterized in that it is closed by the electrode plate arranged on one side surface .
正極側または負極側の電極板と第１の樹脂フィルムおよび第２の樹脂フィルムを正確に位置決め後、両方の樹脂フィルムを含めた全体を外装体に収容することで、外装体に対し正極側または負極側の電極板を正確に位置決め収容できる。
また、正極側または負極側の電極板を外装体に収容する際、第１の樹脂フィルムと第２の樹脂フィルムが緩衝材となるので、正極側または負極側の電極板が外装体に当たって外装体を損傷させるおそれがなくなる。
正極側または負極側の電極板の位置決めが容易かつ正確にできるので、正極側または負極側の電極板を外装体に収容できる範囲内でできる限り大きくできるようになり電気化学セルの構造として望ましい構造にすることができる。
外装体の平面に設けた凹部に対し、電極板を設ける場合、正極側または負極側の電極板と第１の樹脂フィルムおよび第２の樹脂フィルムを正確に位置決め後、第１の樹脂フィルムおよび第２の樹脂フィルムを含めた電極板を凹部に収容することで、外装体の凹部に対し正極側または負極側の電極板を正確に位置決め収容し、融着することができる。
After accurately positioning the electrode plate on the positive electrode side or the negative electrode side and the first resin film and the second resin film, the whole including both resin films is housed in the outer package, so that the positive electrode side or the negative electrode side with respect to the outer package The electrode plate on the negative electrode side can be accurately positioned and accommodated.
In addition, when housing the positive electrode plate or the negative electrode plate in the outer package, the first resin film and the second resin film serve as cushioning materials, so that the positive electrode plate or the negative electrode plate comes into contact with the outer package. the risk of damaging the
Since the positive or negative electrode plate can be positioned easily and accurately, the positive electrode plate or the negative electrode plate can be made as large as possible within the range that can be accommodated in the exterior body, which is a desirable structure for an electrochemical cell. can be
When the electrode plate is provided in the concave portion provided on the plane of the outer package, after the electrode plate on the positive electrode side or the negative electrode side and the first resin film and the second resin film are accurately positioned, the first resin film and the second resin film are positioned. By accommodating the electrode plate including the resin film of No. 2 in the concave portion, the electrode plate on the positive electrode side or the negative electrode side can be accurately positioned and accommodated in the concave portion of the outer package and fused.
（２）本発明に係る電気化学セルは、少なくとも一つの平面を有し、前記平面の周縁部より内側に透孔が形成され、前記透孔の周縁部に融着した第１の樹脂フィルムを介して前記透孔を塞ぐ電極板を有する外装体を備え、前記第１の樹脂フィルムは前記電極板の周縁外方に延出した延出部を有し、前記第１の樹脂フィルムが前記電極板に融着され、前記延出部及び前記電極板の周縁部に第２の樹脂フィルムが固定され、前記樹脂フィルムが、前記電極板側の融着層とその反対側の基層を備えた積層構造であり、前記融着層が前記基層よりも低融点の樹脂からなることを特徴とする。
樹脂フィルムの電極板側が低融点の樹脂からなる融着層であるならば、樹脂フィルムを電極板に融着する場合に密着不良部分などを生じていない良好な融着構造を得ることができる。また、樹脂フィルムを電極板に融着するヒーター温度より高い融点を有する前記基層であるならば、融着を行う場合のヒーターに樹脂フィルムが付着することはない。
このため、正極側の樹脂フィルムであれば正極側電極板に対する密着性を良好にした融着構造を提供することができ、負極側の樹脂フィルムであれば負極側電極板に対する密着性を良好にした融着構造を提供できる。また、これら樹脂フィルムを融着するためにヒーターで加圧加熱後、ヒーターを分離する場合、樹脂フィルムがヒーター側に付着して融着部分が剥離するなどの問題を生じない。このため、信頼性の高い融着構造を有する電気化学セルを提供できる。
（３）本発明に係る電気化学セルは、外装体が底部と側部とを有するケースと、前記ケースの底部と反対側の開口部を封止する蓋板を備え、前記底部に少なくとも一つの平面を有し、前記平面の周縁部より内側に透孔が形成され、前記透孔の周縁部に融着した第１の樹脂フィルムを介し前記透孔を塞ぐ電極板を有する外装体を備え、前記第１の樹脂フィルムは前記電極板の周縁外方に延出した延出部を有し、前記第１の樹脂フィルムが前記電極板に融着され、前記延出部及び前記電極板の周縁部に第２の樹脂フィルムが固定されたことを特徴とする。
外装体の底部に平面が設けられ、この平面に透孔が形成され、この平面に透孔を塞ぐ電極板を備えた構成を採用できる。この構成の場合、外装体の底部側に第１の樹脂フィルムと第２の樹脂フィルムで挟んだ電極板を設けることができる。
上述の構造により、外装体の底部側に電極板を備えた構造において、電極板周りの封止構造に優れた電気化学セルを提供できる。
(2) The electrochemical cell according to the present invention has at least one flat surface, a through hole is formed inside the peripheral edge of the flat surface, and the first resin film is fused to the peripheral edge of the through hole. an exterior body having an electrode plate that closes the through hole through an outer body; the first resin film has an extension portion extending outward from the peripheral edge of the electrode plate; a second resin film is fixed to the extending portion and the peripheral portion of the electrode plate, and the resin film includes a fusion layer on the side of the electrode plate and a base layer on the opposite side; structure, wherein the fusion layer is made of a resin having a lower melting point than the base layer.
If the electrode plate side of the resin film is a fusion layer made of a resin with a low melting point, it is possible to obtain a good fusion structure that does not cause poor adhesion when the resin film is fused to the electrode plate. Further, if the base layer has a melting point higher than the heater temperature for fusing the resin film to the electrode plate, the resin film will not adhere to the heater when fusing.
Therefore, the resin film on the positive electrode side can provide a fused structure with good adhesion to the positive electrode plate, and the resin film on the negative electrode side can provide good adhesion to the negative electrode plate. It is possible to provide a fused structure with In addition, when the heater is separated after pressurization and heating by the heater to fuse these resin films, problems such as the resin film adhering to the heater side and peeling of the fused portion do not occur. Therefore, an electrochemical cell having a highly reliable fused structure can be provided.
(3) The electrochemical cell according to the present invention includes a case in which the exterior body has a bottom portion and a side portion, and a lid plate that seals an opening on the opposite side of the bottom portion of the case, and at least one An exterior body having a flat surface, a through hole formed inside from the peripheral edge of the flat surface, and an electrode plate closing the through hole via a first resin film fused to the peripheral edge of the through hole, The first resin film has an extension portion extending outward from the periphery of the electrode plate, and the first resin film is fused to the electrode plate to form the extension portion and the periphery of the electrode plate. A second resin film is fixed to the portion.
A configuration can be employed in which a flat surface is provided on the bottom of the exterior body, a through hole is formed in this flat surface, and an electrode plate that closes the through hole is provided in this flat surface. In this configuration, an electrode plate sandwiched between the first resin film and the second resin film can be provided on the bottom side of the exterior body.
With the structure described above, an electrochemical cell having an excellent sealing structure around the electrode plates can be provided in the structure in which the electrode plates are provided on the bottom side of the outer package.
（４）前記第１の樹脂フィルムと前記第２の樹脂フィルムとが前記電極板の周縁外方において融着されている構成を採用できる。
電極板に第１の樹脂フィルムと第２の樹脂フィルムを融着した構造となるので、融着部分の構造安定性が向上し、正極側または負極側の電極板を第１の樹脂フィルムと第２の樹脂フィルムにより両面側から保護し、外装体における電極板回りを良好に封止した構造を提供できる。
（５）本発明に係る電気化学セルにおいては、前記外装体に収容され、前記電極板と電気的に接続する電極体に設けられた正極及び負極の少なくとも一方が前記電極板に接続されている構成を採用できる。
(4) A configuration may be employed in which the first resin film and the second resin film are fused together on the outside of the peripheral edge of the electrode plate.
Since the structure is such that the first resin film and the second resin film are fused to the electrode plate, the structural stability of the fused portion is improved, and the electrode plate on the positive electrode side or the negative electrode side is fused to the first resin film and the second resin film. It is possible to provide a structure in which both sides are protected by the resin film of No. 2, and the periphery of the electrode plate in the exterior body is well sealed.
(5) In the electrochemical cell according to the present invention, at least one of a positive electrode and a negative electrode provided in an electrode body that is housed in the exterior body and electrically connected to the electrode plate is connected to the electrode plate. configuration can be adopted.
（６）本発明に係る電気化学セルにおいては、前記外装体が、金属缶から、あるいは、ラミネートフィルムからなる構成を採用できる。
外装体は金属缶からなる構成、ラミネートフィルムからなる構成のいずれを採用しても良い。ラミネートフィルムを用いた場合、電極板との擦れや接触があると、ラミネートフィルム損傷の問題を生じるおそれがあるが、電極板の両側を樹脂フィルムで覆うことで、電極板のエッジ部分がラミネートフィルムを傷つけるおそれがない。
( 6 ) In the electrochemical cell according to the present invention, the exterior body may be made of a metal can or laminated film.
The exterior body may employ either a configuration made of a metal can or a configuration made of a laminate film. When a laminate film is used, if there is rubbing or contact with the electrode plate, there is a risk of damage to the laminate film. there is no risk of damaging the
Claims (7)
前記第１の樹脂フィルムは前記電極板の周縁外方に延出した延出部を有し、前記第１の樹脂フィルムが前記電極板に融着され、前記延出部及び前記電極板の周縁部に第２の樹脂フィルムが固定され、前記透孔が、前記底面のいずれかの側の面に配置された前記電極板により塞がれていることを特徴とする電気化学セル。 A first resin having at least one flat surface, a concave portion formed in the flat surface, a through hole formed in the bottom surface of the concave portion inside the peripheral edge portion of the flat surface, and a first resin fused to the peripheral edge portion of the through hole. An exterior body having an electrode plate that closes the through hole via a film,
The first resin film has an extension portion extending outward from the periphery of the electrode plate, and the first resin film is fused to the electrode plate to form the extension portion and the periphery of the electrode plate. an electrochemical cell, wherein a second resin film is fixed to a portion of the electrochemical cell, and the through holes are closed by the electrode plates arranged on either side of the bottom surface;
前記第１の樹脂フィルムは前記電極板の周縁外方に延出した延出部を有し、前記第１の樹脂フィルムが前記電極板に融着され、前記延出部及び前記電極板の周縁部に第２の樹脂フィルムが固定され、
前記樹脂フィルムが、前記電極板側の融着層とその反対側の基層を備えた積層構造であり、前記融着層が前記基層よりも低融点の樹脂からなることを特徴とする電気化学セル。 An exterior having at least one flat surface, a through hole formed inside the peripheral edge of the flat surface, and an electrode plate closing the through hole via a first resin film fused to the peripheral edge of the through hole. equipped with a body,
The first resin film has an extension portion extending outward from the periphery of the electrode plate, and the first resin film is fused to the electrode plate to form the extension portion and the periphery of the electrode plate. A second resin film is fixed to the part,
The electrochemical cell, wherein the resin film has a laminated structure including a fusion layer on the electrode plate side and a base layer on the opposite side, and the fusion layer is made of a resin having a lower melting point than that of the base layer. .
前記底部に少なくとも一つの平面を有し、前記平面の周縁部より内側に透孔が形成され、前記透孔の周縁部に融着した第１の樹脂フィルムを介し前記透孔を塞ぐ電極板を有する外装体を備え、
前記第１の樹脂フィルムは前記電極板の周縁外方に延出した延出部を有し、前記第１の樹脂フィルムが前記電極板に融着され、前記延出部及び前記電極板の周縁部に第２の樹脂フィルムが固定されたことを特徴とする電気化学セル。 The exterior body includes a case having a bottom and a side, and a cover plate that seals an opening on the opposite side of the bottom of the case,
an electrode plate having at least one flat surface on the bottom , having through holes formed inside the peripheral edges of the flat surfaces, and closing the through holes via a first resin film fused to the peripheral edges of the through holes; provided with an exterior body having
The first resin film has an extension portion extending outward from the periphery of the electrode plate, and the first resin film is fused to the electrode plate to form the extension portion and the periphery of the electrode plate. An electrochemical cell, characterized in that a second resin film is fixed to the part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021042750 | 2021-03-16 | ||
| PCT/JP2022/010120 WO2022196460A1 (en) | 2021-03-16 | 2022-03-08 | Electrochemical cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2022196460A1 JPWO2022196460A1 (en) | 2022-09-22 |
| JPWO2022196460A5 true JPWO2022196460A5 (en) | 2023-08-22 |
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ID=83320507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023507005A Pending JPWO2022196460A1 (en) | 2021-03-16 | 2022-03-08 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPWO2022196460A1 (en) |
| WO (1) | WO2022196460A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5011499B2 (en) * | 2006-03-30 | 2012-08-29 | 日本ケミコン株式会社 | Electronic components |
| JP6289899B2 (en) * | 2013-12-26 | 2018-03-07 | 株式会社東芝 | Nonaqueous electrolyte battery, assembled battery and storage battery device |
| JP7246178B2 (en) * | 2018-12-14 | 2023-03-27 | セイコーインスツル株式会社 | electrochemical cell |
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2022
- 2022-03-08 JP JP2023507005A patent/JPWO2022196460A1/ja active Pending
- 2022-03-08 WO PCT/JP2022/010120 patent/WO2022196460A1/en active Application Filing
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