The invention discloses equipment, a method and a
system for estimating remaining capacity of a battery. The equipment comprises an interface and a
processing module. The interface is used for receiving information of a parameter for indicating battery status. The
processing module is coupled to the interface and is used for calculating remaining capacity of a battery and capacity ratio, wherein the capacity ratio is the ratio of the calculated remaining capacity to reference capacity of the battery. The
processing module is used for comparing a parameter with a reference value so as to generate a first comparison result and is used for comparing the capacity ratio with
reference rate so as to generate a second comparison result. The processing module is also used for setting variation according to the first and second comparison results and changing the calculated remaining capacity with the variation. By the equipment, the method and the
system for estimating the remaining capacity of the battery,
estimation accuracy of the battery's remaining capacity is raised,
estimation process of the battery's remaining capacity is simplified, and a lot of time is saved.