JP2015118756A - 溶融塩電池 - Google Patents
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
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- 238000000034 method Methods 0.000 description 6
- 229910001415 sodium ion Inorganic materials 0.000 description 6
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 5
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- 150000001768 cations Chemical class 0.000 description 4
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- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- GGYPIUANQNUBOE-UHFFFAOYSA-N n-(trifluoromethylsulfonyl)sulfamoyl fluoride Chemical compound FC(F)(F)S(=O)(=O)NS(F)(=O)=O GGYPIUANQNUBOE-UHFFFAOYSA-N 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
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- KXNAKBRHZYDSLY-UHFFFAOYSA-N sodium;oxygen(2-);titanium(4+) Chemical compound [O-2].[Na+].[Ti+4] KXNAKBRHZYDSLY-UHFFFAOYSA-N 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
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- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- KAKQVSNHTBLJCH-UHFFFAOYSA-N trifluoromethanesulfonimidic acid Chemical compound NS(=O)(=O)C(F)(F)F KAKQVSNHTBLJCH-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
- H01M10/399—Cells with molten salts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01M50/543—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0048—Molten electrolytes used at high temperature
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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
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
本発明に係る溶融塩電池は、第1電極と、第2電極と、第1電極と第2電極とを電気的に絶縁するセパレータとを有する電極群と、溶融塩電解質と、電極群と電解質とを収容する容器とを具備する。容器は、開口部を有する有底のケースと、ケースの開口部を封口する封口板と、を具備している。
第1集電体は、第1金属多孔体を含むことが好ましい。例えば第1電極が正極であれば、第1集電体には、アルミニウムを含む金属多孔体を使用するのが好ましい。
以下、図面を参照しながら、本発明の実施形態の詳細について説明する。
図1に、本実施形態に係る溶融塩電池の外観を斜視図により示す。図2は、その溶融塩電池の正面図(a)、上面図(b)および側面図(c)である。
金属多孔体は、三次元網目状で中空の骨格を有することが好ましい。骨格が内部に空洞を有することで、金属多孔体は、嵩高い三次元構造を有しながらも、極めて軽量である。このような金属多孔体は、連続空隙を有する樹脂製の多孔体を、集電体を構成する金属でメッキ処理し、さらに加熱処理などにより、内部の樹脂を分解または溶解させることにより形成できる。メッキ処理により、三次元網目状の骨格が形成され、樹脂の分解や溶解により、骨格の内部を中空にすることができる。
なお、正極および負極において、アルカリ金属イオンを可逆的に担持する反応は、例えば、アルカリ金属イオンを吸蔵および放出(挿入および脱離)する反応である。
図1に示すような外観を有するナトリウム溶融塩電池(定格容量:26Ah)を組み立てた。ケースには、厚み(平面部の厚み)が0.9mmである、A3003(アルミニウム合金)を使用した。封口板には、厚み(平面部の厚み)が1.5mmである、A3003(アルミニウム合金)を使用した。温度ヒューズ部品として、日本エマソン株式会社製のS9E51084C(製品番号)を使用した。温度ヒューズ部品は、シリコーンを含む樹脂素材(信越化学工業株式会社製のシリコーンゴム、KE−3467(製品番号))により、封口板に接触した状態で固定した。
定格容量:26Ah
充電電流:26A
使用温度T2:70℃(T1−T2=14度)
充電終止電圧:3.3V
放電終止電圧:1.5V
上記樹脂素材により、温度ヒューズ部品をケースに接触させて固定した点で実施例1の電池Aと異なる電池(以下、電池Xという)を100個作製した。温度ヒューズ部品は、温度センサを設置したケース側壁と同じ側のケース側壁に接触させた。そして、実施例1と同様にして、100個の電池Xを使用して、充放電試験と過充電試験を実行した。
バスバー部品および温度ヒューズ部品を含んでいない点で実施例1の電池Aとは異なる電池(以下、電池Yという)を100個作製した。そして、バスバー部品および温度ヒューズ部品を経由せずに、充電電流および放電電流を直接に第1外部端子に入出力したこと以外は、実施例1と同様にして、100個の電池Yを使用して、充放電試験を実行した。
Claims (8)
- 第1電極と、第2電極と、前記第1電極と前記第2電極とを電気的に絶縁するセパレータとを有する電極群と、
溶融塩電解質と、
前記電極群と前記電解質とを収容する、開口部を有する有底のケースと、
前記ケースの開口部を封口する封口板と、
前記封口板に設けられた、前記第1電極の第1外部端子および前記第2電極の第2外部端子と、
前記第1外部端子に固定されたバスバー部品と、
前記バスバー部品と前記第1外部端子とを電気的に絶縁するように、前記第1外部端子と前記バスバー部品との間に介在する第1絶縁部と、
前記バスバー部品と前記第1外部端子とに電気的に接続され、周囲温度が基準温度T1未満であるときに前記バスバー部品と前記第1外部端子とを導通させる温度ヒューズ部品と、
前記温度ヒューズ部品を、前記封口板の表面に接触または近接した状態で、前記封口板に固定する固定部と、
を具備し、
充電電流が、前記バスバー部品から前記温度ヒューズ部品を経由して、前記第1外部端子に入力されるように構成されている、溶融塩電池。 - 放電電流が、前記バスバー部品および前記温度ヒューズ部品を介さずに、前記第1外部端子から出力されるように構成されている、請求項1に記載の溶融塩電池。
- 前記バスバー部品と前記第1外部端子との間の電流経路に配された第1スイッチを具備し、
前記第1スイッチは、
充電時に前記温度ヒューズ部品と前記第1外部端子とを導通させ、かつ、
放電時に前記温度ヒューズ部品と前記第1外部端子との間の導通を解除する、請求項2に記載の溶融塩電池。 - 前記バスバー部品と前記第1外部端子との間の電流経路に配されたダイオードを具備し、
前記ダイオードは、
充電時に前記バスバー部品と前記第1外部端子とを導通させ、かつ、
放電時に前記バスバー部品と前記第1外部端子との間の電流を遮断する、請求項2に記載の溶融塩電池。 - 前記バスバー部品と前記第1外部端子とに電気的に接続された第2スイッチを具備し、
前記第2スイッチは、
放電電流が基準値未満のときに、前記放電電流を、前記温度ヒューズ部品から前記バスバー部品を経由して、前記第1外部端子から出力し、かつ、
前記放電電流が前記基準値以上のときに、前記放電電流を、前記バスバー部品および前記温度ヒューズ部品を介さずに、前記第1外部端子から出力するように、前記放電電流の出力経路を切り替える、請求項1に記載の溶融塩電池。 - 前記第1外部端子が柱状であり、
前記温度ヒューズ部品は、前記第1外部端子が挿通されるリング状の入力端子と、前記第1外部端子が挿通されるリング状の出力端子とを有し、
前記入力端子が、前記バスバー部品と電気的に接続され、かつ前記第1外部端子と電気的に絶縁されており、
前記出力端子が、前記バスバー部品と電気的に絶縁され、かつ前記第1外部端子と電気的に接続されている、請求項1〜5のいずれか1項に記載の溶融塩電池。 - 前記固定部が、シリコーンを含む、請求項1〜6のいずれか1項に記載の溶融塩電池。
- 前記封口板が前記温度ヒューズ部品の少なくとも一部分を収容する凹部を有している、請求項1〜7のいずれか1項に記載の溶融塩電池。
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CN201480069131.3A CN105830274B (zh) | 2013-12-17 | 2014-11-06 | 熔融盐电池 |
US15/104,839 US10044023B2 (en) | 2013-12-17 | 2014-11-06 | Molten salt battery |
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CN110208713A (zh) * | 2019-06-10 | 2019-09-06 | 北京长城华冠汽车科技股份有限公司 | 一种电池模组的测试系统及充放电测试方法 |
DE102020118843A1 (de) * | 2020-07-16 | 2022-01-20 | Bayerische Motoren Werke Aktiengesellschaft | Batteriezelle mit einer elektrischen Sicherung |
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JP6149719B2 (ja) | 2017-06-21 |
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US20160329551A1 (en) | 2016-11-10 |
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