Abstract: Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.

Abstract: A charging control apparatus measures a first temperature of a first secondary battery selected from the plurality of secondary batteries, a second temperature of a coolant flowing into the cooling device, a charging current of the secondary battery pack, a first terminal voltage of the first secondary battery and a second terminal voltage of a second secondary battery closest to the cooling device, estimates a temperature of a temperature estimation point of the second secondary battery from a lumped thermal model having a thermal resistance between two points selected from the temperature estimation point of the second secondary battery, the first temperature measurement point and the second temperature measurement point, and measurement data about temperature, current and voltage, and determines the estimated temperature as a minimum temperature of the secondary battery pack, and varies a charging power provided to the secondary battery pack according to the minimum temperature.

Abstract: A first exemplary seat with a side airbag disposed therein includes a front seat cover and a side seat cover. The seat covers are releasably attached together at a junction configured for the airbag to be deployed therethrough. The front seat cover is less stretchable than the side seat cover. A second exemplary seat with a side airbag disposed therein includes a front seat cover and a side seat cover. The seat covers are releasably attached together at a junction configured for the airbag to be deployed therethrough. The junction includes a first thread of the front seat cover, and a second thread of the second seat cover. The first thread is stronger than the second thread.

Abstract: A first exemplary seat with a side airbag disposed therein includes a front seat cover and a side seat cover. The seat covers are releasably attached together at a junction configured for the airbag to be deployed therethrough. The front seat cover is less stretchable than the side seat cover. A second exemplary seat with a side airbag disposed therein includes a front seat cover and a side seat cover. The seat covers are releasably attached together at a junction configured for the airbag to be deployed therethrough. The junction includes a first thread of the front seat cover, and a second thread of the second seat cover. The first thread is stronger than the second thread.