PROBLEM TO BE SOLVED: To solve a problem that in a conventional battery pack, a determination threshold value for determining voltage drop of an auxiliary machine battery cannot be set easily.SOLUTION: In a battery pack, voltage of an auxiliary machine battery is measured (S4), and a voltage value measured before cranking is executed is recorded in a non-volatile recording section as a cranking time auxiliary machine voltage value (S8). When a determination that the cranking time auxiliary machine voltage value is an auxiliary machine voltage drop determination threshold value or more is made, a relay switch is turned on (S9). When the cranking time auxiliary machine voltage value indicates a value other than a preset specified value, the auxiliary machine voltage drop determination threshold value is overwritten with a value generated based on the cranking time auxiliary machine voltage value (S2, S3). When cranking is completed normally, the cranking time auxiliary machine voltage value is overwritten with the specified value (S10).SELECTED DRAWING: Figure 4
【課題】従来の電池パックでは、補機バッテリの電圧低下を判定する判定閾値の設定を容易に行うことが出来ない問題があった。【解決手段】本発明の電池パックは、補機バッテリの電圧を計測し(S4)、クランキングを実行する前に計測された電圧値をクランキング時補機電圧値として不揮発性記録部に記録し(S8)、クランキング時補機電圧値が補機電圧低下判定閾値以上であると判断した場合にリレースイッチをオンさせ(S9)、クランキング時補機電圧値が予め設定した既定値以外の値を示している場合には、当該クランキング時補機電圧値に基づき生成される値により補機電圧低下判定閾値を上書きし(S2、S3)、クランキングが正常に終了した場合には、クランキング時補機電圧値を既定値で上書きする(S10)。【選択図】図4
BATTERY PACK AND METHOD OF CONTROLLING RELAY SWITCH FOR THE SAME
電池パック及びそのリレースイッチ制御方法
2018-09-06
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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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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