This battery unit (U) is applicable to a vehicle provided with: an engine; a rotating electrical machine (26) which is drivably coupled to an output shaft of the engine, and which is provided with a power generation function and a powering drive function; and a first storage battery (11) and a second storage battery (12) which are connected in parallel to the rotating electrical machine. The battery unit is provided with the second storage battery, and is connected to the first storage battery and the rotating electrical machine. The battery unit is provided with: a first terminal (T1) to which the first storage battery is connected; a second terminal (T2) to which the rotating electrical machine is connected; a first switch unit (SW1) which opens and closes a first electrical path (L1) connecting the first terminal and the second terminal; and a second switch unit (SW2) which opens and closes a second electrical path (L2) connecting the second storage battery and a connection point (N1) further towards the side of the second terminal than the first switch unit in the first electrical path. The second switch unit has a larger allowable energizing current than the first switch unit. The maximum allowable current when supplying power from the second storage battery to the rotating electrical machine is greater than the maximum allowable current when supplying power from the first storage battery to the rotating electrical machine.
電池ユニット、及び電源システム
2021-02-24
Patent
Electronic Resource
Japanese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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 / 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 / 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 |