JP6014837B2 - リチウムイオン電池用の負極端子および蓋部材、並びにリチウムイオン電池 - Google Patents
リチウムイオン電池用の負極端子および蓋部材、並びにリチウムイオン電池 Download PDFInfo
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 166
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 166
- 239000000463 material Substances 0.000 claims description 132
- 229910052751 metal Inorganic materials 0.000 claims description 125
- 239000002184 metal Substances 0.000 claims description 125
- 238000005219 brazing Methods 0.000 claims description 57
- 238000006243 chemical reaction Methods 0.000 claims description 42
- 229910052802 copper Inorganic materials 0.000 claims description 31
- 230000001629 suppression Effects 0.000 claims description 26
- 229910000838 Al alloy Inorganic materials 0.000 claims description 22
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 20
- 239000008151 electrolyte solution Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 description 129
- 238000003466 welding Methods 0.000 description 48
- 238000004519 manufacturing process Methods 0.000 description 24
- 239000000945 filler Substances 0.000 description 23
- 229910000765 intermetallic Inorganic materials 0.000 description 13
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000005304 joining Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910018054 Ni-Cu Inorganic materials 0.000 description 2
- 229910018481 Ni—Cu Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017755 Cu-Sn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910002482 Cu–Ni Inorganic materials 0.000 description 1
- 229910017927 Cu—Sn Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910003310 Ni-Al Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 that is Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- H—ELECTRICITY
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M10/052—Li-accumulators
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- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/058—Construction or manufacture
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- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
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- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
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- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Description
まず、図1〜図5を参照して、本発明の第1実施形態となる、リチウムイオン電池用の負極端子4、蓋部材2、リチウムイオン電池1、並びにリチウムイオン電池接続体100について、それぞれの構造を説明する。
次に、図9および図10を参照して、本発明の第1参考例となる、リチウムイオン電池用の負極端子204について、構造を説明する。この第1参考例は、上述した第1実施形態とは異なり、負極端子204の端子部240において、第1実施形態において第2金属層として設けたCu層42に替えて、接合層として設けたろう材層41を第2金属層とした構成である。つまり、本発明に係る負極端子におけるCuまたはCu合金からなる第2金属層を、Cuを含有するろう材からなるろう材層41としたのである。
次に、図11と図12を参照して、本発明の第2参考例となる、リチウムイオン電池用の負極端子304について、構造を説明する。この第2参考例は、上述した第1実施形態とは異なり、負極端子304の端子部340において、第1実施形態において接合層として設けたろう材層41に替えて、Ni層341を接合層にした構成である。
次に、図13〜図15を参照して、本発明の第3参考例となる、リチウムイオン電池用の負極端子404について、構造を説明する。この第3参考例は、上述した第1実施形態とは異なり、負極端子404の端子部440において、第1実施形態において接合層として設けたろう材層41を設けない構成である。
次に、本発明の第2実施形態となる、リチウムイオン電池501、これを用いたリチウムイオン電池接続体500に係る構成について、図3、図4および図16を参照して説明する。この第2実施形態においては、上述した第1実施形態とは異なり、リチウムイオン電池501における蓋部材502の蓋材520に、上面20aから突出する正極端子を形成していない。また、負極端子としては第1実施形態における負極端子4を、蓋部材としては同様に蓋部材2を用いている。なお、リチウムイオン電池501は本発明の「リチウムイオン電池」の一例であり、蓋部材502は本発明の「リチウムイオン電池用の蓋部材」の一例である。
次に、本発明の第3実施形態となる、リチウムイオン電池601に係る構成について、図4と図17を参照して説明する。この第3実施形態は、上述した第1実施形態とは異なり、蓋部材602の蓋材620と電池ケース本体603とが、いずれもNiめっき鋼板(NiめっきFe合金)からなる構成である。なお、リチウムイオン電池601は本発明の「リチウムイオン電池」の一例であり、蓋部材602は本発明の「リチウムイオン電池用の蓋部材」の一例である。
2.蓋部材
3.電池ケース本体
4.負極端子
5.正極部
6.負極部
41.ろう材層
42.Cu層
43.Ni層
44.Al層
46.絶縁部
100.リチウムイオン電池接続体
101.バスバー
Claims (10)
- CuまたはCu合金からなる負極部に接合されるとともに、AlまたはAl合金からなるバスバーに溶接されるリチウムイオン電池用の負極端子であって、
AlまたはAl合金からなる第1金属層と、CuまたはCu合金からなる第2金属層と、前記第2金属層における前記負極部と接続する側に接合され、Cuを含むろう材から構成された接合層とを有し、前記第1金属層と前記第2金属層とは反応を抑制するとともに、前記第1金属層よりも融点の高い反応抑制層を介して接合されたクラッド材からなる、リチウムイオン電池用の負極端子。 - 前記反応抑制層は、NiまたはNi合金、もしくはTiまたはTi合金のいずれかからなる、請求項1に記載のリチウムイオン電池用の負極端子。
- 前記第1金属層および前記第2金属層は、表面が平面状に形成されている、請求項1または2のいずれかに記載のリチウムイオン電池用の負極端子。
- 前記第1金属層の厚みは、前記第1金属層以外の層の厚みの総和よりも大きい、請求項1乃至3のいずれかに記載のリチウムイオン電池用の負極端子。
- 前記第2金属層の厚みは、前記第1金属層を除く前記第2金属層以外の層の厚みの総和よりも大きい、請求項1乃至4のいずれかに記載のリチウムイオン電池用の負極端子。
- 前記負極端子の側面において外部と接する前記第1金属層と前記反応抑制層との接合界面および前記第2金属層と前記反応抑制層との接合界面は、絶縁部により覆われている、請求項1乃至5のいずれかに記載のリチウムイオン電池用の負極端子。
- 請求項1乃至6のいずれかに記載の負極端子を備えたリチウムイオン電池用の蓋部材であって、該蓋部材は、穴部が設けられた金属材料からなる蓋材を有し、前記穴部において、前記負極端子は電気的に絶縁した状態で支持されている、リチウムイオン電池用の蓋部材。
- 前記穴部において、前記負極端子は前記蓋材の表面よりも突出した状態で支持されている、請求項7に記載のリチウムイオン電池用の蓋部材。
- 請求項7または8に記載の蓋部材を用いたリチウムイオン電池であって、CuまたはCu合金からなる前記負極部と、AlまたはAl合金からなる正極部と、電解液とが少なくとも収納された収納部材を有し、該収納部材は前記蓋部材により密閉されており、前記負極部には前記負極端子が接続されている、リチウムイオン電池。
- 複数のリチウムイオン電池の正極側と前記負極端子とがAlまたはAl合金からなる前記バスバーにより電気的に直列に接続されている、請求項9に記載のリチウムイオン電池。
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JP2011073917 | 2011-03-30 | ||
JP2011073917 | 2011-03-30 | ||
PCT/JP2012/058364 WO2012133654A1 (ja) | 2011-03-30 | 2012-03-29 | リチウムイオン電池用の負極端子および蓋部材、並びにリチウムイオン電池 |
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JPWO2012133654A1 JPWO2012133654A1 (ja) | 2014-07-28 |
JP6014837B2 true JP6014837B2 (ja) | 2016-10-26 |
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US (1) | US9627676B2 (ja) |
JP (1) | JP6014837B2 (ja) |
KR (1) | KR101900975B1 (ja) |
CN (1) | CN103443966B (ja) |
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US9627676B2 (en) | 2017-04-18 |
WO2012133654A1 (ja) | 2012-10-04 |
JPWO2012133654A1 (ja) | 2014-07-28 |
US20140011074A1 (en) | 2014-01-09 |
KR101900975B1 (ko) | 2018-09-20 |
CN103443966A (zh) | 2013-12-11 |
CN103443966B (zh) | 2015-12-09 |
KR20140004687A (ko) | 2014-01-13 |
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