PROBLEM TO BE SOLVED: To provide a charge amount calculation device capable of accurately calculating a charge amount to a battery.SOLUTION: A minimum value VBSTA of the terminal voltage (battery voltage) of a battery in a predetermined period after a starter is activated is acquired by a charge amount calculation device. Then, it is determined whether the minimum value VBSTA is not more than a first determination threshold value V1 and larger than a second determination threshold value V2, smaller than a second determination threshold value V2, or larger than the first determination threshold value by deterioration determination processing. For example, when the minimum value VBSTA of the battery voltage is not more than the first determination threshold value V1 and larger than the second determination threshold value V2 by the deterioration determination processing more than three times continuously going back in the past from the newest, the charging efficiency is acquired from a first charging efficiency map (S43). When a charge amount is calculated, an ampere value of a charging current is multiplied by the charging efficiency set according to the first charging efficiency map (S44) so as to correct the ampere value, and the ampere value after the correction is used for the calculation of the charging amount.SELECTED DRAWING: Figure 8
【課題】バッテリへの充電量を精度よく算出できる、充電量算出装置を提供する。【解決手段】スタータの始動後の所定期間におけるバッテリの端子電圧(バッテリ電圧)の最小値VBSTAが取得される。そして、劣化判定処理にて、最小値VBSTAが第1判定閾値V1以下であり第2判定閾値V2より大きいか、第2判定閾値V2以下であるか、第1判定閾値よりも大きいかが判別される。たとえば、最新から連続して遡る過去3回以上の劣化判定処理でバッテリ電圧の最小値VBSTAが第1判定閾値V1以下であって第2判定閾値V2よりも大きいと判定された場合、第1充電効率マップから充電効率が取得され(S43)、充電量の算出に際し、充電電流の電流値に第1充電効率マップに従って設定された充電効率が乗じられることにより(S44)、当該電流値が補正され、その補正後の電流値が充電量の算出に用いられる。【選択図】図8
CHARGE AMOUNT CALCULATION DEVICE
充電量算出装置
2018-04-05
Patent
Electronic Resource
Japanese
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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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