To provide a battery cell reuse determination device capable of determining whether a battery cell or a module in which a plurality of battery cells are grouped can be reused in a short time and at low cost.SOLUTION: A battery cell reuse determination device that individually determines whether a plurality of battery cells that are housed in a vehicle battery pack and are individually connected to a plurality of control lines extending outside the vehicle battery pack can be reused includes an AC resistor that is connected to the plurality of battery cells via the plurality of control lines, measures the battery voltages of the plurality of battery cells individually, and calculates the AC resistance of the plurality of battery cells individually, and estimates the degree of deterioration of the battery cell from a relationship between the AC resistance of the battery cell and the degree of deterioration of the battery cell on the basis of the AC resistance of the battery cell calculated in the AC resistor.SELECTED DRAWING: Figure 4
【課題】電池セル又は複数の電池セルがグループ化されたモジュールのリユースの可否を短時間かつ少ない費用で判定できる電池セルのリユース判定装置を提供する。【解決手段】電池セルのリユース判定装置は、車両用電池パックに収納され、車両用電池パックの外部に延びる複数の制御ラインが個別に接続された複数の電池セルのリユースの可否を個別に判定する電池セルのリユース判定装置であって、複数の制御ラインを介して複数の電池セルに接続され、複数の電池セルの電池電圧を個別に計測するとともに、複数の電池セルの交流抵抗を個別に算出する交流抵抗器を備え、交流抵抗器において算出された電池セルの交流抵抗に基づいて、電池セルの交流抵抗と電池セルの劣化度合いとの関係から電池セルの劣化度合いを推定する。【選択図】 図4
BATTERY CELL REUSE DETERMINATION DEVICE AND BATTERY CELL REUSE DETERMINATION METHOD
電池セルのリユース判定装置、及び電池セルのリユース判定方法
2021-04-22
Patent
Electronic Resource
Japanese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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