Patent ID: 9701303
Date: 2017-07-11
CPC Classifications: B60K,B60W,F16H,Y02T,Y10S

Claim:
1. A method for shifting a gear of a hybrid electric vehicle, comprising the following acts performed by a gear shifting system of the vehicle: determining a remaining capacity of a battery relative to a first threshold and a second threshold, wherein the second threshold is less than the first threshold; determining a state of the battery based on the remaining capacity, wherein: determining the battery is in the discharging state without considering the remaining capacity of the battery, if the hybrid electric vehicle has just been started; determining a plurality of optional target gears and a torque and a rotating speed of an engine corresponding to each optional target gear according to the state of the battery and a speed of the hybrid electric vehicle; selecting an optional target gear with a minimum fuel consumption of the engine as a target gear from the plurality of optional target gears; and comparing the selected optional target gear with a current gear and performing a gear shift as based on the comparison.