To provide a technique enabling a high accuracy estimation of a battery full charge capacity.SOLUTION: A full charge capacity estimation method is applied to an automobile that includes: an engine for driving a generator capable of charging a battery; and a control apparatus for starting the engine when a charge ratio of the battery reaches a given first lower-limit charge ratio and driving the engine until the charge ratio exceeds a given upper-limit charge ratio. The full charge capacity estimation method includes: (1) a shutoff step of shutting off a power transmission path from the engine to generator; (2) discharge step of discharging the battery until the charge ratio reaches a second lower-limit charge ratio being lower than the first lower-limit charge ratio; (3) charge step of charging the battery using an external power supply until the charge ratio exceeds an upper-limit charge ratio from the second lower-limit charge ratio; and (4) estimation step of estimating a battery full charge capacity on the basis of battery voltages at a charging start time of the battery and a charging end time thereof, and a current volume supplied to the battery during charging.SELECTED DRAWING: Figure 1
【課題】本明細書は、バッテリの満充電容量を高い精度で推定することのできる技術を提供する。【解決手段】本明細書が開示する満充電容量推定方法は、バッテリを充電することができる発電機を駆動するエンジンと、バッテリの充電率が所定の第1下限充電率を下回ったらエンジンを始動し、充電率が所定の上限充電率を超えるまでエンジンを駆動する制御装置を備えている自動車に適する。満充電容量推定方法は、(1)エンジンから発電機への動力伝達経路を遮断する遮断ステップ、(2)充電率が第1下限充電率よりも低い第2下限充電率に達するまでバッテリを放電する放電ステップ、(3)外部電源を使って充電率が第2下限充電率から上限充電率を超えるまでバッテリを充電する充電ステップ、(4)バッテリの充電開始時と充電終了時のバッテリ電圧と、充電中にバッテリに供給された電流量に基づいてバッテリの満充電容量を推定する推定ステップ、を備える。【選択図】図1
BATTERY FULL CHARGE CAPACITY ESTIMATION METHOD, AND BATTERY CONTROL APPARATUS
バッテリの満充電容量推定方法、および、バッテリ制御装置
2022-12-08
Patent
Electronic Resource
Japanese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / 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 / 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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