JP4578811B2 - 非水電解質二次電池のハンダ付け方法 - Google Patents
非水電解質二次電池のハンダ付け方法 Download PDFInfo
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- JP4578811B2 JP4578811B2 JP2004012897A JP2004012897A JP4578811B2 JP 4578811 B2 JP4578811 B2 JP 4578811B2 JP 2004012897 A JP2004012897 A JP 2004012897A JP 2004012897 A JP2004012897 A JP 2004012897A JP 4578811 B2 JP4578811 B2 JP 4578811B2
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
- Y10T29/49114—Electric battery cell making including adhesively bonding
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
- Y10T29/49115—Electric battery cell making including coating or impregnating
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Description
一方、放電曲線において電池反応を示す電圧プラトー領域よりも放電した電池、すなわち放電領域Cまで放電させた電池では内部での電池反応が終了しており、この領域の電池はリフローハンダ付け時の熱処理によって大きな劣化を起こす。これは、電池反応が終了した正極電極部において活物質に吸蔵されるリチウムイオン以上のリチウムイオンが何らかの形で正極電極部に存在し、この過剰のリチウムイオンがリフローハンダ付け時の熱による化学反応で電解液の分解を起こし、電池を劣化させると考えることができる。
厚さ0.2mmのガラス繊維からなる不織布を乾燥後φ3mmに打ち抜きセパレータ306とした。ガスケット307は、PEEK製のものを用いた。電解液308は、エチレンカーボネート(EC):γ−ブチロラクトン(γBL)の体積比1:1混合溶媒にホウフッ化リチウム(LiBF4)を1.5mol/l溶解した。この電解液308を5.0μ電池缶内に入れた。正極ユニットと負極ユニットを重ねかしめ封口することにより電池を作製した。
102 電圧プラトー領域
103 正の曲率の極大値
201 放電領域A
202 放電領域B(i)
203 放電領域B(ii)
204 放電領域B(iii)
205 放電領域C
301 正極ペレット
302 正極ケース
303 負極ペレット
304 負極ケース
305 リチウムフォイル
306 セパレータ
307 ガスケット
308 電解液
Claims (6)
- 定電流放電、定抵抗放電、及び外部電源によって電池電圧よりも低い電圧を印加して行う放電のいずれか一つにより、組立直後の満充電の非水電解質二次電池を放電し、電池電圧を下げる放電処理工程と、
前記非水電解質二次電池を基板上に載置して前記基板を加熱する加熱工程とを有し、
前記放電処理工程において放電処理終了時の放電電圧値が、放電容量を横軸そして放電電圧を縦軸にして作成した前記非水電解質二次電池の放電曲線における正の曲率が極大となる放電電圧値よりも高い電圧値とすることを特徴とする非水電解質二次電池のリフローハンダ付け方法。 - 定電流放電、定抵抗放電、及び外部電源によって電池電圧よりも低い電圧を印加して行う放電のいずれか一つにより、組立直後の満充電の非水電解質二次電池を放電し、電池電圧を下げる放電処理工程と、
前記非水電解質二次電池を基板上に載置して前記基板を加熱する加熱工程とを有し、 前記放電処理工程において放電処理終了時の放電電圧値が、放電容量を横軸そして放電電圧を縦軸にして作成した前記非水電解質二次電池の放電曲線における電圧プラトー領域の終わりに位置する正の曲率が極大となる放電電圧値よりも高い電圧値とすることを特徴とする非水電解質二次電池のリフローハンダ付け方法。 - 前記放電処理工程において放電処理終了時の放電電圧値が、前記非水電解質二次電池を載置し、
前記基板に損傷が生じる電圧値以下であることを特徴とする請求項1又は請求項2に記載の非水電解質二次電池のリフローハンダ付け方法。 - 定電流放電、定抵抗放電、及び外部電源によって電池電圧よりも低い電圧を印加して行う放電のいずれか一つにより、組立直後の満充電の非水電解質二次電池を放電し、電池電圧を下げる放電処理工程と、
前記非水電解質二次電池を基板上に載置して前記基板を加熱する加熱工程とを有し、
前記放電処理工程において放電させる電気容量が前記非水電解質二次電池の全放電容量の2%以上80%以下であることを特徴とする非水電解質二次電池のリフローハンダ付け方法。 - 前記放電処理工程において放電させる電気容量が前記非水電解質二次電池の全放電容量の2%以上20%以下であることを特徴とする請求項4に記載の非水電解質二次電池のリフローハンダ付け方法。
- 前記放電処理工程において放電させる電気容量が前記非水電解質二次電池の全放電容量の2%以上10%以下であることを特徴とする請求項4に記載の非水電解質二次電池のリフローハンダ付け方法。
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JP2004012897A JP4578811B2 (ja) | 2004-01-21 | 2004-01-21 | 非水電解質二次電池のハンダ付け方法 |
US11/031,361 US7399321B2 (en) | 2004-01-21 | 2005-01-07 | Soldering method of nonaqueous-electrolyte secondary-battery |
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CN100438157C (zh) * | 2005-08-29 | 2008-11-26 | 松下电器产业株式会社 | 用于非水电解质二次电池的负极、其制造方法以及非水电解质二次电池 |
TWI300999B (en) * | 2006-02-09 | 2008-09-11 | Neotec Semiconductor Ltd | Method of end of discharge voltage measurement for battery and calibration thereof |
EP2433330A4 (en) * | 2009-05-20 | 2016-12-07 | Sapurast Res Llc | METHOD FOR INTEGRATION OF ELECTROCHEMICAL DEVICES IN AND ON ACCESSORIES |
JP5697472B2 (ja) * | 2010-03-29 | 2015-04-08 | セイコーインスツル株式会社 | 電気化学素子 |
TWI478418B (zh) * | 2012-01-20 | 2015-03-21 | Via Tech Inc | 放電曲線的校正系統與電池的放電曲線的校正方法 |
CN103427125B (zh) * | 2012-05-15 | 2016-04-13 | 清华大学 | 硫基聚合物锂离子电池的循环方法 |
JP6152640B2 (ja) * | 2012-12-18 | 2017-06-28 | 株式会社Gsユアサ | 密閉型電池用ゴム製弁体、安全弁装置及びアルカリ蓄電池 |
CN104319425B (zh) * | 2014-08-25 | 2016-06-22 | 江苏华东锂电技术研究院有限公司 | 对锂离子电池的容量进行管理的方法 |
WO2017057359A1 (ja) * | 2015-09-29 | 2017-04-06 | 株式会社村田製作所 | 非水電解質二次電池、蓄電デバイス、その製造方法、および蓄電回路 |
WO2023042802A1 (ja) * | 2021-09-15 | 2023-03-23 | 日本碍子株式会社 | 回路基板アセンブリの製造方法 |
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JP2002117841A (ja) * | 2000-02-01 | 2002-04-19 | Seiko Instruments Inc | 非水電解質二次電池 |
JP2003249263A (ja) * | 2002-02-26 | 2003-09-05 | Sanyo Electric Co Ltd | 基板装着用リチウム二次電池 |
JP2003331836A (ja) * | 2002-05-10 | 2003-11-21 | Sii Micro Parts Ltd | 非水電解質二次電池、及びその製造方法 |
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JP2002075317A (ja) * | 2000-08-25 | 2002-03-15 | Sanyo Electric Co Ltd | 電池用高分子材料、電池用セパレータ、電池用絶縁パッキング及びリチウム電池 |
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JP2002117841A (ja) * | 2000-02-01 | 2002-04-19 | Seiko Instruments Inc | 非水電解質二次電池 |
JP2003249263A (ja) * | 2002-02-26 | 2003-09-05 | Sanyo Electric Co Ltd | 基板装着用リチウム二次電池 |
JP2003331836A (ja) * | 2002-05-10 | 2003-11-21 | Sii Micro Parts Ltd | 非水電解質二次電池、及びその製造方法 |
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