Abstract: Provided is a secondary battery pack including a plurality of secondary battery modules including a plurality of secondary battery cells stacked in parallel to each other in a vertical direction, a cover, and a switch installed at an upper side of the one end in the horizontal direction of the cover, a housing, a Power Relay Assembly (PRA) including a relay electrically connected to the secondary battery cells and switches, for transmitting charging power supplied from the outside to the secondary battery cells when the relay is in a close state and changing the relay to an open state when the switch is pushed according to pressure applied to an upper side from a lower surface of the cover, and a Battery Management System (BMS) for controlling the Power Relay Assembly (PRA).

Abstract: A digital display device that implements a digital photo frame function. The digital display device includes a user input unit to receive control signals corresponding to a user operation, the control signals to control a plurality of images to be continuously displayed, a display controller including an image arrangement unit, the display controller to output display signals by storing image files or processing the stored image files according to the control signals, a storage unit having image files stored therein and a display unit to display the plurality of images on a screen according to the display signals, the image arrangement unit to arrange the plurality of images in an arrangement order for display based on comparison results that compare data for pairs of images selected from the plurality of images upon the control signals being input.

Abstract: Provided is a secondary battery pack including a plurality of secondary battery modules including a plurality of secondary battery cells stacked in parallel to each other in a vertical direction, a cover, and a switch installed at an upper side of the one end in the horizontal direction of the cover, a housing, a Power Relay Assembly (PRA) including a relay electrically connected to the secondary battery cells and switches, for transmitting charging power supplied from the outside to the secondary battery cells when the relay is in a close state and changing the relay to an open state when the switch is pushed according to pressure applied to an upper side from a lower surface of the cover, and a Battery Management System (BMS) for controlling the Power Relay Assembly (PRA).

Abstract: Disclosed is a temperature-raising system for a battery module, which includes a heater assembly including a heater and a heater cover. The temperature-raising system includes: a battery module that includes one or more batteries; two or more heater assemblies that are attached to the battery module using a fixing means; a temperature sensor that is connected to the battery module or to the heater assemblies and senses a temperature of the battery module; and a controller that receives a preset target temperature, senses the temperature of the battery module using the temperature sensor, and turns on or off the heater using a voltage of the battery module, based on the preset target temperature and the temperature of the battery module that is sensed by the temperature sensor, the preset target temperature being a temperature that the battery module is targeted to reach.

Abstract: A display device and a method of driving the display, wherein the volume of background music is controlled depending upon the color or brightness of display images, and the power consumption is reduced. The display device includes a display unit with a plurality of pixels, a signal controller, and a volume controller. The display unit displays images by selectively activating pixels from among the plurality of pixels in accordance with input video signals and input image control signals. The signal controller reads the input video signals to generate on-pixel signals having information about the ratio of a number of the active pixels compared to a total number of pixels in the plurality of pixels per each frame.

Abstract: A display device and a driving method thereof where different sounds are output depending upon characteristics of display images. The display device includes a display unit having a plurality of pixels, a signal controller, and a sound controller. The display unit displays images by selectively activating pixels from among the plurality of pixels in accordance with input video signals and input image control signals. The signal controller reads the input video signals to generate on-pixel signals having information about a ratio of a number of the activated pixels compared to a total number of pixels in the plurality of pixels per each frame and generating a sound output start signal.