Patent ID: 8880367

Claim:
A method for accurately performing power estimation on a battery of an electronic device, the method comprising the steps of: by utilizing a charging current monitoring module of a processing circuit of the electronic device, monitoring a charging current of the battery to obtain charging current data of the charging current with respect to time; and by utilizing a calculation module of the processing circuit of the electronic device, performing curve mapping according to the charging current data and according to a plurality of sets of predetermined curve characteristic data, in order to determine an estimation parameter corresponding to one of a plurality of predetermined cycle counts, wherein the estimation parameter is utilized for performing power estimation, and the sets of predetermined curve characteristic data respectively correspond to the predetermined cycle counts, which represent estimated ages of the battery, respectively, wherein the step of performing curve mapping according to the charging current data and according to the plurality of sets of predetermined curve characteristic data in order to determine the estimation parameter corresponding to one of the plurality of predetermined cycle counts further comprises: within the plurality of sets of predetermined curve characteristic data, selecting a set of predetermined curve characteristic data that matches the charging current data; within a plurality of predetermined parameters respectively corresponding to the sets of predetermined curve characteristic data, utilizing a predetermined parameter corresponding to the selected set of predetermined curve characteristic data as the estimation parameter; and comparing at least one curve characteristic associated to the charging current data with that associated to one set of the plurality of sets of predetermined curve characteristic data, in order to determine the selected set of predetermined curve characteristic data; wherein the at least one curve characteristic of a curve under consideration comprises at least one curve characteristic index for the curve under consideration to fall from a first current value to a second current value; and the curve under consideration is a curve associated to the charging current data or a curve associated to the one set of the plurality of sets of predetermined curve characteristic data.