An electrically powered vehicle comprising: a first motor serving as a driving power source; a power storage device configured to send/receive electric power to/from said first motor; a power generating structure for generating charging power for said power storage device during vehicle traveling; a charge state estimating unit for estimating a remaining amount in said power storage device based on a state value of said power storage device; a deterioration diagnosis unit for obtaining a deterioration parameter indicating a deterioration state of said power storage device; and a charging/discharging control unit for controlling charging/discharging of said power storage device such that the remaining amount estimate value (#SOC) provided by said charge state estimating unit does not fall out of a control range (151, 152) during said vehicle traveling, said charging/discharging control unit including a control range setting unit for setting said control range, and a charging command unit for causing said power generating structure to generate said charging power at least when said remaining amount estimate value reaches a lower limit value (SOCl) of said control range, said control range setting unit increasing said lower limit value from a first value to a second value when at least one of a first condition and a second condition is established, said first condition being such that a temperature (Tb) of said power storage device is lower than a predetermined temperature, said second condition being such that said deterioration parameter reaches a predetermined level, said charging/discharging control unit further including an upper limit value setting unit for setting a charging power upper limit value (Win) and a discharging power upper limit value (Wout) in a present state of said power storage device at least based on said remaining amount estimate value (#SOC) and the temperature (Tb) of said power storage device, characterized in that when at least one of said first and second conditions is established and said discharging power upper limit value of said power storage device is lower than a criterion value, said charging command unit causes said power generating structure to generate said charging power. a first motor serving as a driving power source; a power storage device configured to send/receive electric power to/from said first motor; a power generating structure for generating charging power for said power storage device during vehicle traveling; a charge state estimating unit for estimating a remaining amount in said power storage device based on a state value of said power storage device; a deterioration diagnosis unit for obtaining a deterioration parameter indicating a deterioration state of said power storage device; and a charging/discharging control unit for controlling charging/discharging of said power storage device such that the remaining amount estimate value (#SOC) provided by said charge state estimating unit does not fall out of a control range (151, 152) during said vehicle traveling, said charging/discharging control unit including a control range setting unit for setting said control range, and a charging command unit for causing said power generating structure to generate said charging power at least when said remaining amount estimate value reaches a lower limit value (SOCl) of said control range, a control range setting unit for setting said control range, and a charging command unit for causing said power generating structure to generate said charging power at least when said remaining amount estimate value reaches a lower limit value (SOCl) of said control range, said control range setting unit increasing said lower limit value from a first value to a second value when at least one of a first condition and a second condition is established, said first condition being such that a temperature (Tb) of said power storage device is lower than a predetermined temperature, said second condition being such that said deterioration parameter reaches a predetermined level, said charging/discharging control unit further including an upper limit value setting unit for setting a charging power upper limit value (Win) and a discharging power upper limit value (Wout) in a present state of said power storage device at least based on said remaining amount estimate value (#SOC) and the temperature (Tb) of said power storage device, characterized in that when at least one of said first and second conditions is established and said discharging power upper limit value of said power storage device is lower than a criterion value, said charging command unit causes said power generating structure to generate said charging power.