DEVICE AND METHOD FOR DETECTING DEPOSITION OF METAL LITHIUM OF SECONDARY BATTERY

To provide a device and a method for detecting deposition of metal lithium of a secondary battery which can accurately determine whether deposition of metal lithium occurs.SOLUTION: The detector detecting deposition of metal lithium of a secondary battery includes a metal lithium deposition determin...

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Bibliographische Detailangaben
Hauptverfasser:	TAMAI ATSUSHI, ITO YUKI, SATO KENJI, SHINJO SAE, NISHIDA TAKAKO, WATABE MITSUTOSHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY TESTING
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Beschreibung
Zusammenfassung:	To provide a device and a method for detecting deposition of metal lithium of a secondary battery which can accurately determine whether deposition of metal lithium occurs.SOLUTION: The detector detecting deposition of metal lithium of a secondary battery includes a metal lithium deposition determination unit for determining whether deposition of metal lithium occurs in a secondary battery. The metal lithium deposition determination unit determines whether deposition of metal lithium occurs, on the basis of the amount of change of in open circuit voltage of the secondary battery per prescribed time after the secondary battery is charged.SELECTED DRAWING: Figure 1 【課題】金属リチウムの析出が発生しているか否かを正確に判定することができる二次電池の金属リチウム析出検知装置および二次電池の金属リチウム析出検知方法を提供する。【解決手段】二次電池の金属リチウム析出検知装置は、金属リチウムの析出が二次電池に発生しているか否かを判定する金属リチウム析出判定部を備え、前記金属リチウム析出判定部は、前記二次電池に対する充電を終了した後における、所定時間当たりの前記二次電池の開回路電圧の変化量に基づいて、金属リチウムの析出が発生しているか否かを判定する。【選択図】図１