SECONDARY-BATTERY TEMPERATURE-RAISING APPARATUS AND VEHICLE HAVING SAME

A temperature elevating apparatus of a secondary battery (10) includes a ripple generator (20) and a controller (30). Ripple generator (20) is connected to secondary battery (10), and is configured to actively generate ripple current (1) of a predetermined frequency in secondary battery (10). Controller (30) controls ripple generator (20) to elevate a temperature of the secondary battery by generating ripple current (1) in secondary battery (10). Here, the predetermined frequency is set to be a frequency in a frequency region where an absolute value of an impedance of secondary battery (10) relatively decreases based on frequency characteristics of the impedance of secondary battery (10).