Control system for on-vehicle battery
January 23, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesVehicle electrical energy management system Electric braking and auxiliary engine mechanism for a motor vehicle Hybrid drive system with regeneration for motor vehicles and the like with a brushless motor Method and apparatus for predicting battery reserve time to a specified end-voltage Residual capacity meter for electric car battery Combined parking meter and electric-vehicle battery charger with remote status receiver Smart battery algorithm for reporting battery parameters to an external device Apparatus for monitoring and controlling charging of a battery for a hybrid or electric vehicle Service-life discriminating feature added to a battery charger Radio frequency energy management system InventorsAssigneeApplicationNo. 012644 filed on 01/23/1998US Classes:320/122, Bypassable battery cell290/40R, Engine control320/119, With individual charging of plural batteries or cells320/149, With detection of current or voltage integral (e.g., total charge, etc.)322/17AUTOMATIC CONTROL OF GENERATOR OR DRIVING MEANSExaminersPrimary: Wong, Peter S.Assistant: Toatley, Gregory J. Jr. Attorney, Agent or FirmForeign Patent References
International ClassH02J 007/00Foreign Application Priority Data1996-05-24 JPAbstractCharging and discharging of a battery are controlled while observing the state of the battery, thereby improving its efficiency and increasing battery service life. A program control circuit acquires vehicle speed from a vehicle speed sensor and the rotational speed of the internal combustion engine from a rotation sensor. The program control circuit controls an inverter which performs AC-to-DC or DC-to-AC conversion between a motor-generator coupled to the internal combustion engine and a battery mounted on the vehicle. At the same time, the program control circuit acquires the charging and discharging current (i) of the battery, which is detected by a current sensor, and calculates the time integral I of the charging and discharging current (i). The circuit controls the charging current to the battery during regenerative braking, and the discharge current when the vehicle is being driven, in accordance with a function of the time integral I. The overall life of the battery can be lengthened, and the energy lost by the brakes can be most effectively regenerated. Moreover, even if there is variability in the characteristics of the unit cells, its increase can be held in check. In addition, battery costs can be reduced and maintenance simplified.Field of SearchBypassable battery cellWith state-of-charge detection With individual charging of plural batteries or cells With detection of current or voltage integral (e.g., total charge, etc.) As generator Engine control Power factor or phase relationships Current output Fluid pressure including wind Plural electrical conditions In generator and/or driving means With respect to a reference or master device or quantity Thermal conditions With line-drop compensation Plural conditions Including an electrical condition Tachometer devices With time-delay in the response Electrical conditions in circuit other than that of generator being controlled Centrifugal of fly weight governor AUTOMATIC CONTROL OF GENERATOR OR DRIVING MEANS Antihunting or rate of change Voltage and current Light or photosensitive control circuits Speed or frequency of generator Frequency responsive devices or networks Voltage of generator or circuit supplied | |
