成果報告書詳細
管理番号20120000000050
タイトル*平成20年度中間年報 系統連系円滑化蓄電システム技術開発 実用化技術開発 新エネルギー・電力事業用リチウムイオン蓄電システムの高性能・低コスト化の研究開発
公開日2012/7/10
報告書年度2008 - 2008
委託先名北陸電力株式会社 エナックス株式会社
プロジェクト番号P06004
部署名スマートコミュニティ部
和文要約和文要約等以下本編抜粋:
1. 研究開発の内容及び成果等
(1) 電池システムの研究開発(エナックス株式会社)
a)セルの量産化に関する検討
100kWhシステムに供する20Ahセル(全1344セル)の量産処方を検討し、コストダウンの為の負極材の変更とRBC(ハードカーボン)の添加および負極の水系塗工を数十セルの試作の結果で決定した。水系塗工は従来法(NMP溶剤塗工)に比較して極板の乾燥条件を強化する必要があったが、生産に組み込める範囲で設定し、セルの容量と室温サイクル試験結果は従来品同等以上、DC抵抗と60℃サイクル特性はなお改良の余地はあるが、本処方で量産を実行することと決定した。
英文要約Title: Technology Development of Energy Storage System to Facilitate Interconnection of Renewable Energy to Power Grid/Technology Development for Practical Application/Research and Development about High Efficiency - Low Cost of Energy Storage System for New Energy and Electric Power Application which used Lithium-Ion Battery (FY2006-FY2010) FY2008 Annual Report
(1) Research and development of the battery system
a) Study on the mass production of cells (ENAX, INC.)
After the dozens experimental consideration on anode material, additive hard carbon and aqueous electrode coating method, mass-production procedure for the 100kWh system which integrates 1334 cells of 20Ah is finally determined. Compared with conventional NMP-solvent coating method, new aqueous electrode coating method needs reinforced drying condition for the coated electrode. Final condition is adjusted with in the mass-production requirements. Resulting tests on the cell capacity and room-temperature cycle are carried out better than that of conventional process. Remaining improvements on the DC-resistance, cycle test at 60 C-deg and related items must be done before the beginning of mass-production. By the additional rationalizes on the cathode material production, cell assembly step and others, final reduction in cell cost estimates to 25% based on that of 2007 level.
(2) Research and development of the charge and discharge system
a) Study on the conversion control for power system stability (Hokuriku Electric Power Co., Ltd.)
We verified the appropriate action of FRT and DVS function, which was implemented in order to stabilize power systems, during the combination tests of two converters (35kWA) and two cell-modules (25kWh).
(3) Research and development of the storage battery system
a) Consistency confirmation to technical standards for electricity businesses
We reviewed the methods of safety tests in order to secure the user's safety. We made seven tests (heating, outside short circuit, etc.) based on the reviewed methods. In particular, we made the short circuit test with very low resistance (0.5 milliohm, outside) and verified the cell characteristics for short circuit.
(4) Research and development of battery management system
Ensure the flexible availability of the Battery Managements System and related instruments, new remote communication system using radio transmit ( including mobile phone and PHS net work) were established. Conventional cable transmit system is still remaining on the field test area for an alternatives. Basic design of the 24-hrs data logging and monitor system are successfully done both on the hardware and software basis. Following step of the detail design is constructively stared.
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