To diagnose whether a secondary battery is a genuine product even when the weights of a genuine product and a non-genuine product are the same.SOLUTION: A battery pack 40 includes a ripple current circuit 43 configured to apply a ripple current of a predetermined frequency to an assembled battery 41, and a battery ECU 44 that diagnoses whether the assembled battery 41 is genuine. The battery ECU 44 uses a strain gauge 424 to acquire the strain of the assembled battery 41 when a ripple current of a predetermined frequency is applied. The battery ECU 44 diagnoses that the assembled battery 41 is not a genuine product when the acquired strain is out of the set range including the distortion of the genuine product when a ripple current of a predetermined frequency is applied.SELECTED DRAWING: Figure 1
【課題】正規品と非正規品とで重量が同等な場合であっても、二次電池について、正規品であるか否かを診断する。【解決手段】電池パック40は、組電池41に所定周波数のリップル電流を印加可能に構成されたリップル電流回路43と、組電池41が正規品かどうかを診断する電池ECU44とを備える。電池ECU44は、歪ゲージ424を用いて、所定周波数のリップル電流印加時における組電池41の歪みを取得する。電池ECU44は、取得した歪みが、所定周波数のリップル電流印加時における正規品の歪みを含む設定範囲から外れている場合に、組電池41が正規品でないと診断する。【選択図】図1
SECONDARY BATTERY DIAGNOSTIC SYSTEM, SECONDARY BATTERY DIAGNOSTIC METHOD, AND VEHICLE
二次電池の診断システム、二次電池の診断方法、および車両
2023-07-28
Patent
Elektronische Ressource
Japanisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 / 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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