JP6636012B2 - 加圧部を含む円筒型電池及びその製造方法 - Google Patents
加圧部を含む円筒型電池及びその製造方法 Download PDFInfo
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- JP6636012B2 JP6636012B2 JP2017509675A JP2017509675A JP6636012B2 JP 6636012 B2 JP6636012 B2 JP 6636012B2 JP 2017509675 A JP2017509675 A JP 2017509675A JP 2017509675 A JP2017509675 A JP 2017509675A JP 6636012 B2 JP6636012 B2 JP 6636012B2
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- QEXMICRJPVUPSN-UHFFFAOYSA-N lithium manganese(2+) oxygen(2-) Chemical class [O-2].[Mn+2].[Li+] QEXMICRJPVUPSN-UHFFFAOYSA-N 0.000 description 1
- RSNHXDVSISOZOB-UHFFFAOYSA-N lithium nickel Chemical compound [Li].[Ni] RSNHXDVSISOZOB-UHFFFAOYSA-N 0.000 description 1
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 1
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical class [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 150000005181 nitrobenzenes Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 229910021470 non-graphitizable carbon Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000001008 quinone-imine dye Substances 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 229920005608 sulfonated EPDM Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Description
(a)円筒形の缶の収納部に正極、分離膜、及び負極を含む電極組立体(ジェリーロール)を収納する過程;
(b)前記収納部に注入する電解液の量を調節して、安全ベントと収納部との間に形成される加圧部と収納部の相対的な体積を調節する過程;及び
(c)前記円筒形の缶の開放上端部にキャップアセンブリを搭載する過程;
を含む。
(d)前記円筒型電池の活性化のための充放電を行い、前記充放電で発生したガスを加圧部に捕集することによって、所定の圧力を生成する過程。
LiNi0.5Mn1.5O4を正極活物質として使用し、導電材(Super−P)、バインダー(PVdF)をそれぞれ90:5:5の重量比でNMPに入れ、ミキシングして正極合剤を製造した後、20μmの厚さのアルミニウム箔にコーティングし、圧延及び乾燥して、正極を製造した。
前記実施例1において、円筒形の缶に電解液を3.4g注入した以外は、実施例1と同様にして円筒型電池を製造した。このとき、加圧部の体積は、収納部の体積に対して2.5%であった。
前記実施例1において、電極組立体及び電解液を円筒形の缶の代わりにパウチ型電池ケースに収納した後、熱融着してパウチ型電池を製造した以外は、実施例1と同様にして電池を製造した。
前記実施例1、実施例2及び比較例1の電池を、25℃のチャンバーで1Cで充放電を行いながら、初期容量に対する容量維持率を測定し、その結果を図8及び図9に示す。
Claims (15)
- 正極、分離膜、及び負極を含む電極組立体(ジェリーロール)と、
前記電極組立体及び電解液が共に収納される収納部を含む円筒形の缶と、
前記円筒形の缶の開放上端部に搭載されるキャップアセンブリと、
前記キャップアセンブリに内蔵されており、円筒型電池の内部に存在するガスの圧力によって破裂するようにノッチが形成されている安全ベントと、
前記安全ベントと収納部との間に位置し、収納部と連通しており、ガスによって収納部に所定の圧力を加える加圧部と
を含み、
前記加圧部の体積は、前記収納部の体積に対して0.1%〜2%であり、
前記加圧部は3〜25気圧のガスを含み、
前記安全ベントは、30気圧以上の圧力で破裂するように設定されており、
前記正極は、正極活物質として、下記化学式1で表されるリチウム複合遷移金属酸化物を含むことを特徴とする、円筒型電池:
Li1+aNibMcMn2−(b+c)O4−z (1)
上記式中、Mは、Ti、Co、Al、Cu、Fe、Mg、B、Cr、Zr、Zn及び2周期の遷移金属からなる群から選択される1つ以上であり、0≦a≦0.1、0.4≦b≦0.5、0≦c≦0.1、0≦z≦0.1である。 - 前記加圧部は10〜25気圧のガスを含むことを特徴とする、請求項1に記載の円筒型電池。
- 前記ガスは、電池の活性化のための充放電時に電解液の分解反応によって生成されたガスを含むことを特徴とする、請求項1に記載の円筒型電池。
- 前記電解液は、電極組立体が完全に浸漬されるように過剰に含まれていることを特徴とする、請求項1に記載の円筒型電池。
- 前記負極は、負極活物質として、下記化学式2で表されるリチウム金属酸化物を含むことを特徴とする、請求項1に記載の円筒型電池:
LiaM’bO4−cAc (2)
上記式中、M’は、Ti、Sn、Cu、Pb、Sb、Zn、Fe、In、Al及びZrからなる群から選択される1つ以上の元素であり、
a及びbは、0.1≦a≦4、0.2≦b≦4の範囲でM’の酸化数(oxidation number)によって決定され、
cは、0≦c<0.2の範囲で酸化数によって決定され、
Aは、−1又は−2価の1つ以上のアニオンである。 - 前記化学式2のリチウム金属酸化物は、下記化学式3で表されるリチウムチタン酸化物(Lithium Titanium Oxide:LTO)であることを特徴とする、請求項5に記載の円筒型電池:
LiaTibO4 (3)
上記式中、0.5≦a≦3、1≦b≦2.5である。 - 前記化学式3のリチウムチタン酸化物は、Li1.33Ti1.67O4またはLiTi2O4であることを特徴とする、請求項6に記載の円筒型電池。
- 前記キャップアセンブリは、安全ベントの外周面に沿って接続されている突出状の上端キャップをさらに含むことを特徴とする、請求項1に記載の円筒型電池。
- 前記キャップアセンブリは、上端キャップの外周面に装着されているガスケットをさらに含むことを特徴とする、請求項8に記載の円筒型電池。
- 前記キャップアセンブリの上端キャップと安全ベントとの間にはPTC素子が介在していることを特徴とする、請求項8に記載の円筒型電池。
- 請求項1に記載の円筒型電池を含むことを特徴とする、デバイス。
- 前記デバイスは、コンピュータ、携帯電話、ウェアラブル電子機器、パワーツール(power tool)、電気自動車(Electric Vehicle:EV)、ハイブリッド電気自動車、プラグインハイブリッド電気自動車、電気二輪車、電気ゴルフカート、または電力貯蔵用システムであることを特徴とする、請求項11に記載のデバイス。
- 請求項1に記載の円筒型電池を製造する方法であって、
(a)円筒形の缶の収納部に正極、分離膜、及び負極を含む電極組立体(ジェリーロール)を収納する過程と、
(b)前記収納部に注入する電解液の量を調節して、安全ベントと収納部との間に形成される加圧部と収納部の相対的な体積を調節する過程と、
(c)前記円筒形の缶の開放上端部にキャップアセンブリを搭載する過程と
を含み、
前記過程(b)において、前記加圧部の体積を、前記収納部の体積に対して0.1%〜2%となるように調節することを特徴とする、円筒型電池の製造方法。 - 前記過程(c)の後に、以下の過程をさらに含むことを特徴とする、請求項13に記載の円筒型電池の製造方法:
(d)前記円筒型電池の活性化のための充放電を行い、前記充放電で発生したガスを加圧部に捕集することによって、所定の圧力を生成する過程。 - 前記過程(d)において、所定の圧力は3〜25気圧であり、詳細には10〜25気圧であることを特徴とする、請求項14に記載の円筒型電池の製造方法。
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KR1020140130182A KR20160037518A (ko) | 2014-09-29 | 2014-09-29 | 가압부를 포함하는 원통형 전지 및 이의 제조 방법 |
PCT/KR2015/009218 WO2016052867A1 (ko) | 2014-09-29 | 2015-09-02 | 가압부를 포함하는 원통형 전지 및 이의 제조 방법 |
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US20210351483A1 (en) * | 2020-05-05 | 2021-11-11 | James E. Beecham | Battery comprising electrode with laser-sintered material and at least one hundred electrode extensions |
KR102263423B1 (ko) * | 2017-03-23 | 2021-06-11 | 주식회사 엘지에너지솔루션 | 안전벤트의 이탈을 방지하는 가이드 부재를 포함하는 캡 어셈블리 |
WO2018230148A1 (ja) * | 2017-06-15 | 2018-12-20 | 株式会社村田製作所 | 二次電池、電池パック、電動車両、電力貯蔵システム、電動工具および電子機器 |
KR102331123B1 (ko) * | 2017-09-22 | 2021-11-26 | 주식회사 엘지에너지솔루션 | 탄성 부재를 포함하는 원통형 전지셀의 캡 어셈블리 |
KR102565019B1 (ko) * | 2018-06-04 | 2023-08-08 | 주식회사 엘지에너지솔루션 | 가스 발생 물질을 포함하는 접착부가 구비된 원통형 이차전지 |
KR20210077676A (ko) | 2018-09-11 | 2021-06-25 | 에너자이저 브랜즈, 엘엘씨 | 슬롯형 그로밋을 갖춘 보청기 배터리 |
WO2020137372A1 (ja) * | 2018-12-28 | 2020-07-02 | 三洋電機株式会社 | 密閉電池 |
US11641044B1 (en) | 2020-04-14 | 2023-05-02 | Energizer Brands, Llc | Battery housing and systems and methods of making thereof |
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JP2000082457A (ja) * | 1998-09-04 | 2000-03-21 | Toyo Kohan Co Ltd | 電気電子機器・部品用安全装置、それを用いた密閉型電池の安全装置及びそれを用いた密閉型電池 |
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WO2003044882A1 (fr) * | 2001-11-20 | 2003-05-30 | Tdk Corporation | Materiau actif d'electrode, electrode, element d'accumulateur au lithium-ion, procede de production de materiau actif d'electrode et procede de production d'element d'accumulateur au lithium-ion |
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KR100966549B1 (ko) | 2008-10-14 | 2010-06-29 | 주식회사 엘지화학 | 안전성이 향상된 캡 어셈블리 및 이를 포함하고 있는 원통형 이차전지 |
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JP2011034675A (ja) * | 2009-07-29 | 2011-02-17 | Sony Corp | 二次電池用正極および二次電池 |
KR101240717B1 (ko) * | 2010-10-13 | 2013-03-11 | 삼성에스디아이 주식회사 | 이차 전지 |
KR101279994B1 (ko) * | 2010-10-15 | 2013-07-05 | 주식회사 엘지화학 | 전극리드에 안전부재가 위치한 구조의 캡 어셈블리 및 이를 포함하고 있는 원통형 전지 |
CN103299453A (zh) | 2011-01-25 | 2013-09-11 | 株式会社Lg化学 | 圆柱形二次电池 |
KR101335285B1 (ko) | 2011-05-31 | 2013-12-02 | 주식회사 엘지화학 | 신규한 구조의 캡 어셈블리 및 이를 포함하고 있는 원통형 전지 |
WO2013009148A2 (ko) | 2011-07-13 | 2013-01-17 | 주식회사 엘지화학 | 원통형 이차 전지 |
KR101527748B1 (ko) | 2012-04-13 | 2015-06-12 | 주식회사 엘지화학 | 전극의 제조방법 및 이를 사용하여 제조되는 전극 |
JP2014036010A (ja) * | 2012-08-10 | 2014-02-24 | Toyota Motor Corp | 非水電解液二次電池 |
KR102052063B1 (ko) * | 2013-01-11 | 2019-12-04 | 삼성에스디아이 주식회사 | 이차 전지 |
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