초록 ▼

The present invention is to provide an improved strategy for actively controlling battery state of charge (SOC) as a function of the vehicle's kinetic energy. A vehicle system controller (VSC) can vary a target battery SOC as a function of vehicle speed based on either vehicle kinetic energy or the

The present invention is to provide an improved strategy for actively controlling battery state of charge (SOC) as a function of the vehicle's kinetic energy. A vehicle system controller (VSC) can vary a target battery SOC as a function of vehicle speed based on either vehicle kinetic energy or the square of vehicle speed. The VSC can set a maximum battery SOC limit using vehicle velocity and actively control a rate of charging the battery and determine a target battery SOC as a balance between the charge time and the charge current. The VSC can determine a target battery SOC based on a predetermined constant and a predetermined offset value. Target battery SOC is increased as vehicle speed increases until the maximum battery SOC limit is reached.

대표청구항 ▼

1. A system to actively control a battery state of charge (SOC) for a vehicle comprising:a vehicle velocity sensor; a vehicle system controller (VSC) to receive output from the vehicle velocity sensor; the VSC further comprising a first controller to actively vary a target battery SOC as a function

1. A system to actively control a battery state of charge (SOC) for a vehicle comprising:a vehicle velocity sensor; a vehicle system controller (VSC) to receive output from the vehicle velocity sensor; the VSC further comprising a first controller to actively vary a target battery SOC as a function of vehicle speed; the VSC further comprising a second controller to set a maximum battery SOC limit using vehicle velocity; and the VSC further comprising a third controller to actively control a rate of charging the battery and determine the target battery SOC as a balance between a charge time and a charge current.