JPWO2018061458A1 - 全固体電池 - Google Patents
全固体電池 Download PDFInfo
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- 239000007787 solid Substances 0.000 title claims description 28
- 239000000203 mixture Substances 0.000 claims description 39
- 239000011347 resin Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 21
- 239000000463 material Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 239000003792 electrolyte Substances 0.000 description 9
- 239000007784 solid electrolyte Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910020680 Co—Ni—Mn Inorganic materials 0.000 description 1
- 229910018130 Li 2 S-P 2 S 5 Inorganic materials 0.000 description 1
- 229910008035 Li-La-Zr-O Inorganic materials 0.000 description 1
- 229910013733 LiCo Inorganic materials 0.000 description 1
- 229910010701 LiFeP Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910013716 LiNi Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910006268 Li—La—Zr—O Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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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
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
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- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
Description
正極合材層251には、少なくともLiの吸蔵・放出が可能な正極活物質が含まれている。正極活物質としては、LiCo系酸化物、LiNi系複合酸化物、LiMn系複合酸化物な、Li−Co−Ni−Mn複合酸化物、LiFeP系酸化物などが上げられる。正極合材層251中に、正極合材層251内の電子伝導性を担う導電材や、正極合材層251内の材料間の密着性を確保するバインダ、さらには正極合材層251内のイオン伝導性を確保するための固体電解質を含めてもよい。
正極集電体252は、正極塗工部253および正極タブ254を有する。正極塗工部253上に正極合材層251が形成されている。正極タブ254上の一部または全部には正極合材層251が形成されていない。正極タブ254は、発電した電気を外部に取り出すために配置されており、両側正極250または片側正極200の一辺から突出している。図2では、正極タブ254は後述する負極タブ154と同じ方向に突出しているが、異なる方向から突出していてもよい。正極タブ254および負極タブ154が同方向に突出していることにより、電池ユニット1000中の正極タブ254および負極タブ154の占有面積を小さくすることができ、電池ユニット1000のエネルギー密度を向上できる。以下では、正極タブ254または負極タブ154を電極タブと称する場合がある。
負極合材層151には、少なくともLiの吸蔵・放出が可能な正極活物質が含まれている。負極活物質としては、天然黒鉛、ソフトカーボン、非晶質炭素などの炭素系材料、Si(シリコン)金属やSi合金、チタン酸リチウム、リチウム金属などが上げられる。負極合材層151中に、負極合材層151内の電子伝導性を担う導電材や、負極合材層151内の材料間の密着性を確保するバインダ、さらには負極合材層151内のイオン伝導性を確保するための固体電解質を含めてもよい。
負極集電体152は、負極塗工部153および負極タブ154を有する。負極塗工部153および負極タブ154の構成は、概ね正極塗工部253および正極タブ254の構成と同様である。
電解質層300には固体電解質が含まれる。固体電解質として、Li10Ge2PS12、Li2S−P2S5などの硫化物系、Li−La−Zr−Oなどの酸化物系、イオン液体や常温溶融塩などを有機高分子や無機粒子などに担持させたポリマー型、半固体電解質等、全固体電池の動作温度範囲内で流動性を示さない材料が挙げられる。電解質層300は、粉体の圧縮、結着材との混合、スラリー化した固体電解質層の離型材への塗布や担持体への含浸などにより形成する。電解質層300の厚さは全固体電池のエネルギー密度、電子絶縁性の確保等の観点から数nm〜数mmのサイズであることが望ましい。
150 両側負極
151 負極合材層
152 負極集電体
153 負極塗工部
154 負極タブ
160 片側負極集電体
170 片側負極積層集電体
200 片側正極
250 両側正極
251 正極合材層
252 正極集電体
253 正極塗工部
254 正極タブ
260 片側正極集電体
270 片側正極積層集電体
300 電解質層
400 電極体
500 放熱板
510 放熱板突出部
600 樹脂成型体
610 電極タブ用間隙
1000 電池ユニット
2000 全固体電池
3000 ケース
Claims (5)
- 電池ユニットを複数有し、
前記電池ユニットは、
正極集電体および前記正極集電体の両面に形成された正極合材層を有する両面正極と、
負極集電体および前記負極集電体の両面に形成された負極合材層を有する両面負極と、
前記正極集電体および前記正極集電体の一方面に形成された前記正極合材層を有し、前記正極集電体の他方面は前記正極集電体が露出している片面正極と、
前記負極集電体および前記負極集電体の一方面に形成された前記負極合材層を有し、前記負極集電体の他方面は前記負極集電体が露出している片面負極と、を有し、
前記正極集電体は、正極タブを有し、
前記負極集電体は、負極タブを有し、
前記正極タブ同士および前記負極タブ同士が接合され、前記両面正極と前記両面負極とが交互に積層されて、前記電池ユニット中で電気的な並列接続が構成され、
前記電池ユニットにおける積層方向の端部に前記片面正極と前記片面負極とが形成され、
隣接する前記電池ユニットの一方の前記電池ユニットの片面正極における前記正極集電体および他方の前記電池ユニットの前記片面負極における前記負極集電体が積層方向で接続されることで、複数の前記電池ユニットは電気的な直列接続が構成される全固体電池。 - 請求項1の全固体電池において、
積層方向において、隣接する前記電池ユニットの間に放熱板が形成される全固体電池。 - 請求項1の全固体電池において、
複数の前記電池ユニットは樹脂成型体に収納される全固体電池。 - 請求項1の全固体電池において、
前記片面正極における前記正極集電体の厚さは前記両面正極における前記正極集電体の厚さより大きい、または、前記片面負極における前記負極集電体の厚さは前記両面負極における前記負極集電体の厚さより大きい、全固体電池。 - 請求項4の全固体電池において、
前記片面正極は複数の前記正極集電体を有する、または、前記片面負極は複数の前記負極集電体を有する全固体電池。
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PCT/JP2017/027612 WO2018061458A1 (ja) | 2016-09-28 | 2017-07-31 | 全固体電池 |
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JP7136708B2 (ja) | 2019-01-16 | 2022-09-13 | 本田技研工業株式会社 | 全固体電池セル |
JP7238757B2 (ja) * | 2019-12-23 | 2023-03-14 | トヨタ自動車株式会社 | 全固体電池 |
JP7215433B2 (ja) * | 2020-01-15 | 2023-01-31 | トヨタ自動車株式会社 | 電池 |
TWI790570B (zh) | 2021-03-18 | 2023-01-21 | 輝能科技股份有限公司 | 具散熱匣體之電池模組及其電池系統 |
WO2023128388A1 (en) * | 2021-12-31 | 2023-07-06 | Samsung Electro-Mechanics Co., Ltd. | All-solid-state battery and manufacturing method thereof |
CN114188672B (zh) * | 2022-02-17 | 2022-05-13 | 天津普兰能源科技有限公司 | 一种全固态储能器及其制作方法 |
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WO2018061458A1 (ja) | 2018-04-05 |
KR20190002611A (ko) | 2019-01-08 |
CN109314281B (zh) | 2021-06-08 |
JP6745890B2 (ja) | 2020-08-26 |
KR102158246B1 (ko) | 2020-09-21 |
CN109314281A (zh) | 2019-02-05 |
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