JP2019009076A5 - - Google Patents
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- JP2019009076A5 JP2019009076A5 JP2017126345A JP2017126345A JP2019009076A5 JP 2019009076 A5 JP2019009076 A5 JP 2019009076A5 JP 2017126345 A JP2017126345 A JP 2017126345A JP 2017126345 A JP2017126345 A JP 2017126345A JP 2019009076 A5 JP2019009076 A5 JP 2019009076A5
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- Prior art keywords
- electrode
- separator
- storage device
- power storage
- bipolar
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- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 239000004745 nonwoven fabric Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000001629 suppression Effects 0.000 description 7
- 230000037303 wrinkles Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000003796 beauty Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 1
Description
上述したような蓄電装置の製造方法として、例えば、封止体の一部を各電極板の縁部上に予め形成しておき、当該一部が電極板の縁部同士の間に位置するようにバイポーラ電極を積層した後に、当該一部を外側から包囲するように封止体の残部を形成する方法が考えられる。しかしながら、かかる場合、封止体の一部を電極板の縁部に溶着する際に、当該一部の膨張量が電極板の膨張量よりも大きくなるために、電極板に皺や反りが発生することが懸念される。電極板の皺や反りは、隣り合う電極板間の短絡を誘発するおそれがある。また、上述したような蓄電装置には、バイポーラ電極の積層時におけるセパレータの位置ずれの抑制が求められる。 As a method for manufacturing the power storage device as described above, for example, a part of the sealing body is formed in advance on the edge of each electrode plate, and the part is positioned between the edges of the electrode plates. A method of forming the remaining part of the sealing body so as to surround the part from the outside after the bipolar electrode is laminated on the substrate is conceivable. However, in such a case, when a part of the sealing body is welded to the edge of the electrode plate, the expansion amount of the part is larger than the expansion amount of the electrode plate, so that wrinkles and warpage occur in the electrode plate There is a concern to do. The wrinkles and warpage of the electrode plates may induce a short circuit between adjacent electrode plates. Further, the power storage device as described above, suppression of the displacement of the separator at the time of lamination of the bipolar electrode is obtained.
本発明は、上記課題の解決のためになされたものであり、電極板の皺や反りの抑制、及びセパレータの位置ずれの抑制が図られた蓄電装置及び蓄電装置の製造方法を提供することを目的とする。 The present invention has been made in order to solve the above problems, the suppression of wrinkle or warp of the electrode plate, to provide a method for producing 及 beauty power storage device and the power storage device positional deviation of inhibition was achieved in the separator With the goal.
この蓄電装置では、セパレータが不織布により構成されており、当該セパレータが封止体の第１部分を介してバイポーラ電極に結合されてなる電極ユニットを積層することによって、積層体が構成されている。この電極ユニットは、例えば、樹脂部材と不織布とを電極板の縁部上にこの順に重ねた状態で、当該樹脂部材を溶融及び凝固させることによって形成される。このとき、不織布の熱膨張係数は樹脂部材の熱膨張係数よりも小さいため、不織布によって第１部分（樹脂部材）の熱膨張を抑制できる。その結果、第１部分の膨張量と電極板の膨張量との差を低減でき、電極板の皺や反りの発生を抑制できる。更に、セパレータとバイポーラ電極とが一体化された電極ユニットを積層することによって積層体が形成されるため、セパレータとバイポーラ電極との間の位置ずれを抑制することもできる。 In this power storage device, the separator is made of a nonwoven fabric, and the laminate is constituted by laminating an electrode unit in which the separator is coupled to the bipolar electrode via the first portion of the sealing body. The electrode unit is formed, for example, by melting and solidifying the resin member in a state where the resin member and the nonwoven fabric are overlapped on the edge of the electrode plate in this order. At this time, since the thermal expansion coefficient of the nonwoven fabric is smaller than the thermal expansion coefficient of the resin member, the thermal expansion of the first portion (resin member) can be suppressed by the nonwoven fabric. As a result, the difference between the expansion amount of the first portion and the expansion amount of the electrode plate can be reduced, and the occurrence of wrinkles and warpage of the electrode plate can be suppressed . Further, since the laminate is formed by laminating the electrode unit and the separator and the bipolar electrode are integrated, it is also possible to suppress the positional displacement between the separator and the bipolar electrode.
この蓄電装置の製造方法では、樹脂部材と不織布とを電極板の縁部上にこの順に重ねた状態で、当該樹脂部材を溶融及び凝固させることにより、セパレータが封止体の第１部分を介してバイポーラ電極に結合されてなる電極ユニットを形成する。このとき、不織布の熱膨張係数は樹脂部材の熱膨張係数よりも小さいため、不織布によって第１部分（樹脂部材）の熱膨張を抑制できる。その結果、第１部分の膨張量と電極板の膨張量との差を低減でき、電極板の皺や反りの発生を抑制できる。更に、セパレータとバイポーラ電極とが一体化された電極ユニットを積層することによって積層体を形成するため、セパレータとバイポーラ電極との間の位置ずれを抑制することもできる。 In this power storage device manufacturing method, in a state where the resin member and the nonwoven fabric are overlapped in this order on the edge of the electrode plate, the resin member is melted and solidified, so that the separator passes through the first portion of the sealing body. Thus, an electrode unit coupled to the bipolar electrode is formed. At this time, since the thermal expansion coefficient of the nonwoven fabric is smaller than the thermal expansion coefficient of the resin member, the thermal expansion of the first portion (resin member) can be suppressed by the nonwoven fabric. As a result, the difference between the expansion amount of the first portion and the expansion amount of the electrode plate can be reduced, and the occurrence of wrinkles and warpage of the electrode plate can be suppressed . Further, since forming a laminate by laminating the electrode unit and the separator and the bipolar electrode are integrated, it is also possible to suppress the positional displacement between the separator and the bipolar electrode.
本発明によれば、電極板の皺や反りの抑制、及びセパレータの位置ずれの抑制が図られた蓄電装置及び蓄電装置の製造方法を提供できる。 According to the present invention, suppression of wrinkle or warp of the electrode plate can provide a method for producing 及 beauty positional deviation inhibition achieved power storage device and power storage device separator.
Claims (5)
前記バイポーラ電極がセパレータを介して積層されてなる積層体と、
前記バイポーラ電極の縁部を包囲するように設けられた樹脂製の封止体と、を備え、
前記封止体は、少なくとも前記電極板の縁部同士の間に配置された第１部分と、前記積層体の側面に沿って前記第１部分を外側から包囲する第２部分と、を有し、
前記セパレータは、不織布により構成されており、
前記不織布の熱膨張係数は、前記第１部分の熱膨張係数よりも小さく、
前記積層体は、前記セパレータが前記第１部分を介して前記バイポーラ電極に結合されてなる電極ユニットを積層することによって構成されている、蓄電装置。 A power storage device having a bipolar electrode made of an electrode plate having a positive electrode formed on one side and a negative electrode formed on the other side,
A laminate in which the bipolar electrode is laminated via a separator;
And a sealing member made of resin which kicked set so as to surround the edges of the bipolar electrode,
The sealing body includes at least a first portion disposed between edges of the electrode plates, and a second portion surrounding the first portion from the outside along the side surface of the stacked body. ,
The separator is made of a nonwoven fabric,
The thermal expansion coefficient of the nonwoven fabric is smaller than the thermal expansion coefficient of the first portion,
The stacked body is a power storage device configured by stacking electrode units in which the separator is coupled to the bipolar electrode through the first portion.
前記バイポーラ電極の縁部を包囲するように設けられた樹脂製の封止体であって、少なくとも前記電極板の縁部同士の間に配置された第１部分と、前記積層体の側面に沿って前記第１部分を外側から包囲する第２部分と、を有する前記封止体と、を備える蓄電装置の製造方法であって、
樹脂部材と、前記樹脂部材の熱膨張係数よりも小さい熱膨張係数を有する不織布とを前記電極板の縁部上にこの順に重ねた状態で、前記樹脂部材を溶融及び凝固させることにより、前記セパレータが前記封止体の前記第１部分を介して前記バイポーラ電極に結合されてなる複数の電極ユニットを形成する一次成形工程と、
前記電極ユニットを積層することにより、前記積層体を形成する積層工程と、
前記封止体のうち、前記積層体の前記側面に沿って前記第１部分を外側から包囲する前記第２部分を形成する二次成形工程と、を含む、蓄電装置の製造方法。 A laminate in which a bipolar electrode composed of an electrode plate having a positive electrode formed on one side and a negative electrode formed on the other side is laminated via a separator;
Wherein a sealing body made of set kicked the resin so as to surround the edges of the bipolar electrodes, a first portion disposed between the edge portions of at least the electrode plates, the side surfaces of the laminate And a second part that surrounds the first part from the outside along the sealing body .
The separator is obtained by melting and solidifying the resin member in a state where a resin member and a nonwoven fabric having a thermal expansion coefficient smaller than the thermal expansion coefficient of the resin member are stacked in this order on the edge of the electrode plate. a primary molding step but which form a plurality of electrode units consisting coupled to the bipolar electrode through the first portion of the sealing body,
A lamination step of forming the laminate by laminating the electrode units;
Wherein one of the sealing body, comprising said first portion along the side surface of the stacked body and a secondary molding step of forming the second portion surrounding the outer, the method for manufacturing a power storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017126345A JP6977333B2 (en) | 2017-06-28 | 2017-06-28 | Power storage device and manufacturing method of power storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017126345A JP6977333B2 (en) | 2017-06-28 | 2017-06-28 | Power storage device and manufacturing method of power storage device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2019009076A JP2019009076A (en) | 2019-01-17 |
| JP2019009076A5 true JP2019009076A5 (en) | 2019-11-14 |
| JP6977333B2 JP6977333B2 (en) | 2021-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017126345A Active JP6977333B2 (en) | 2017-06-28 | 2017-06-28 | Power storage device and manufacturing method of power storage device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6977333B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113302773B (en) * | 2019-03-12 | 2024-07-30 | 松下知识产权经营株式会社 | Laminated battery |
| JP7268584B2 (en) * | 2019-11-21 | 2023-05-08 | 株式会社豊田自動織機 | Power storage device and method for manufacturing power storage device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5508131A (en) * | 1994-04-07 | 1996-04-16 | Globe-Union Inc. | Injection molded battery containment for bipolar batteries |
| JP4570863B2 (en) * | 2003-10-30 | 2010-10-27 | 川崎重工業株式会社 | Bipolar plate stacked battery |
| JP2005310588A (en) * | 2004-04-22 | 2005-11-04 | Nissan Motor Co Ltd | Bipolar battery, manufacturing method of bipolar battery, battery pack, and vehicle equipped with them |
| JP5151123B2 (en) * | 2006-11-22 | 2013-02-27 | 日産自動車株式会社 | Bipolar battery manufacturing method and manufacturing apparatus |
| JP5458605B2 (en) * | 2009-03-05 | 2014-04-02 | 日産自動車株式会社 | Bipolar secondary battery |
| JP5504708B2 (en) * | 2009-06-25 | 2014-05-28 | 日産自動車株式会社 | Bipolar secondary battery |
| KR101419572B1 (en) * | 2009-11-18 | 2014-07-16 | 주식회사 엘지화학 | Bipolar electrode/separator assembly, bipolar battery comprising the same and method of manufacturing the same |
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