Patent ID: 8248033

Claim:
A secondary battery temperature-increasing control apparatus, comprising: a ripple generating section configured to cause a ripple current to flow in a secondary battery to increase a temperature of the secondary battery; and a feed back control section that controls the ripple generating section so that the ripple current is brought to a predetermined target, wherein; the predetermined target is set so that the ripple current is maximized with a range such that a voltage of the secondary battery does not exceed an upper limit voltage nor fall below a lower limit voltage and an electric current flowing in the secondary battery exceeds neither a maximum charging electric current nor a maximum discharging electric current; when the ripple current is less than the target, the feed back control section controls the ripple generating section so that a frequency of the ripple current is reduced; and when the ripple current is greater than the target, the feed back control section controls the ripple generating section so that the frequency of the ripple current is increased.