Patent ID: 9696382
Date: 2017-07-04
CPC Classifications: B60L,G01R,Y02T

Claim:
1. A method of estimating a maximum power of a battery, the method comprising: calculating, by a controller a first plurality of maximum powers of the battery experimentally according to a first temperature and a first plurality of internal resistances corresponding to a first plurality of states of charge of the battery, respectively, and a second plurality of maximum powers of the battery experimentally according to a second temperature and a second plurality of internal resistances corresponding to a second plurality of states of charge of the battery, respectively; storing, in a memory, a table having experimentally measured values, experimentally measured, representing the first plurality of maximum powers of the battery according to the first temperature and the first plurality of internal resistances corresponding to the first plurality of states of charge, respectively, and the second plurality of maximum powers according to the second temperature and the second plurality of internal resistances corresponding to the second plurality of states of charge, respectively; measuring, by a current and voltage measuring unit, a current and a voltage to calculate an internal resistance, measuring, by a temperature sensor, a temperature of the battery, and estimating, by a controller, a state of charge of the battery, as a result of an estimation of the maximum power of the battery being requested; transferring, from the memory to the controller, the first and second pluralities of stored maximum powers that are mapped according to the first and second stored temperatures, the first and second pluralities of stored internal resistances and the first and second pluralities of stored states of charge, respectively; and estimating, by the controller, values of the first and second pluralities of input maximum powers of the battery to operate a vehicle that is being driven and that includes the battery, the values of the first and second pluralities of input maximum powers of the battery corresponding to the measured temperature, the estimated state of charge, and the calculated internal resistance, from the table in which the first and second pluralities of stored maximum powers of the battery are mapped according to the first and second stored temperatures, the first and second pluralities of stored internal resistances and the first and second pluralities of stored states of charge, respectively, wherein a value of a measured voltage of battery terminals is not included among the values stored in the table.