Method and apparatus for estimating a battery temperature
May 1, 2010. 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 References 3599071 Apparatus and method for determining the rotor temperature of a steam turbine Method for cooking meat or poultry in thermal oven Method of charging a vehicle battery System for measuring state of charge of storage battery Measuring and determination device for calculating an output determination based on a mathematical relationship between multiple different input responsive transducers Automotive battery test apparatus Hollow-charge insert for armor-piercing projectile Generalized real-time thermal model Charge control microcomputer device for vehicle InventorsApplicationNo. 517622 filed on 05/01/1990US Classes:320/153, Temperature compensation701/1VEHICLE CONTROL, GUIDANCE, OPERATION, OR INDICATIONExaminersPrimary: Dixon, Joseph L.Attorney, Agent or FirmInternational ClassesH02J 007/04G01R 019/00 G06F 015/48 AbstractA method and apparatus for estimating the temperature of a vehicle battery, wherein the estimated temperature is used to control the voltage at which the vehicle battery is charged. The variables used to estimate the temperature of the vehicle battery can include a reference temperature sensed from one or more temperature sensors located apart from the battery, and a group of coefficients. Each type of vehicle using the vehicle battery temperature estimation method utilizes a group of coefficients tailored specifically for the vehicle. For a given type of vehicle, empirical data is compiled for determining the specific group of coefficients for the vehicle. This data is compiled by operating the vehicle, and periodically sampling and storing the vehicle speed, the reference temperature, the actual battery temperature, and the elapsed time between samplings. From this data a group of coefficient is determined for the vehicle. The coefficients are then utilized by the vehicle control unit to estimate battery temperature. Based upon the estimated battery temperature, the control unit then can control the voltage at which the vehicle battery is charged.Field of SearchWith temperature compensation of measured conditionThermal conditions With electronic devices (logic gates, semi-conductors, vacuum tubes, etc.) in control circuit Time-temperature relationship (e.g., integral, deterioration, change) Time-temperature integration performed by particular circuit arrangement Rate of change With thermal lag compensation | |
