Abstract: The disclosed technology relates to a battery pack. In an example, the battery pack includes: a pair of base plates, a center frame between the pair of base plates and connected to each of the base plates at both sides in a longitudinal direction, a pair of side frames each connected to an outer side surface of each of the base plates in the longitudinal direction, and a plurality of battery modules on the pair of base plates in a pack space between the center frame and the side frame, wherein each of the plurality of battery modules includes a pair of module frames and accommodates a plurality of battery cells, and wherein the plurality of battery modules are accommodated in the pack space such that the module frames are disposed in a direction crossing the center frame and the side frame.

Abstract: A motor driving apparatus includes a motor an inverter driving the motor based on a switching signal, and a controller. The controller determines a current position estimated value of the motor by applying a zero-voltage vector pulse to the switching signal when entering the driving control of the motor, determines whether the motor is in a stop state according to an amount of change in the current position estimated value, and performs a pulse width modulation control by adjusting a duty ratio of the switching signal when the motor is determined to be in the stop state.

Abstract: A sensorless induction motor system and a control method thereof includes a motor including a stator including windings forming a plurality of phases and a rotor including a permanent magnet, and a controller configured to control operation of the motor by controlling a voltage applied to each phase of the stator, to set a stop waiting time predicted to be necessary for the rotor to stop when the motor is controlled to stop, to apply a pulse voltage to each phase of the stator a plurality of times after the stop waiting time, and to conclude that the rotor has stopped when a minimum deviation value of an induced current is equal to or greater than a reference value.

Abstract: The purpose of the present invention is to display layers in an electronic device, wherein an operating method of the electronic device can comprise the steps of: displaying, on a display, a first layer of which at least a portion is transparent; and displaying, on the display, a second layer of which at least a portion is overlapped with the first layer, and which is disposed on a lower end of the first layer, wherein the at least portion of the second layer can be set to be transparently displayed. In addition, other embodiments are possible.

Abstract: The purpose of the present invention is to display layers in an electronic device, wherein an operating method of the electronic device can comprise the steps of: displaying, on a display, a first layer of which at least a portion is transparent; and displaying, on the display, a second layer of which at least a portion is overlapped with the first layer, and which is disposed on a lower end of the first layer, wherein the at least portion of the second layer can be set to be transparently displayed. In addition, other embodiments are possible.