Abstract: Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource.

Abstract: A method for charging a battery may include: obtaining a state of health of the battery and a magnitude of an initial charging current preset for the battery; converting the magnitude of the initial charging current on the basis of the state of health of the battery, thereby generating a charging current command; and providing the charging current command to a charger, and supplying a charging current corresponding to the charging current command to the battery by the charger.

Abstract: A method for charging a battery may include: obtaining a state of health of the battery and a magnitude of an initial charging current preset for the battery; converting the magnitude of the initial charging current on the basis of the state of health of the battery, thereby generating a charging current command; and providing the charging current command to a charger, and supplying a charging current corresponding to the charging current command to the battery by the charger.

Abstract: A cooling structure for a battery cell includes: a plurality of cells that are stacked; lead tabs protruding outwardly from both ends of the cells to form positive or negative electrodes; and a duct disposed outside of the lead tabs and providing cooling air to the lead tabs to cool the lead tabs. While cooling performance in a battery structure for a vehicle may be maintained by cooling the lead tabs using the cooling air through the duct, durability may be improved by stacking the cells and energy density with respect to the weight and volume of the battery structure, without requiring a heat sink plate and a cooling channel that are conventionally used.

Abstract: A pouch cell includes a battery unit and a structure mounted on the battery unit. The structure is configured to limit an expansion of the battery unit and accommodate an electrolyte.

Abstract: Provided is an all-solid-state battery containing a nano-solid electrolyte which has excellent stability and enhanced battery performance and can be manufactured without changing an existing process. Due to substantially improved battery performance, as well as having excellent safety, the all-solid-state battery containing a nano-solid electrolyte may be widely used and further contribute to industrial development such as electric vehicles in which medium and large lithium ion rechargeable batteries are used.

Abstract: Disclosed is a positive electrode composite in an all-solid battery. In particular, contents of the electrolyte, the positive electrode material, and the conductive material are non-linearly changed from the electrolyte layer toward the metal current collector. Accordingly, as being closer to the electrolyte layer, ion conductivity is increased, and as being closer to the metal current collector, electron conductivity is increased, such that the electrochemical reactions may be actively performed in the entire internal portion of the positive electrode composite.

Abstract: A pouch cell includes a battery unit and a structure mounted on the battery unit. The structure is configured to limit an expansion of the battery unit and accommodate an electrolyte.

Abstract: Disclsoed are a bipolar electrode, a bipolar all-solid battery manufactured by using the same, and a manufacturing method thereof. The bipolar electrode includes: a solid electrolyte; an anode slurry and a cathode slurry, each of which is provided on a first surface and a second surface of the solid electrolyte; spacers provided in the anode slurry and the cathode slurry; and a metal substrate provided in the anode slurry and the cathode slurry. Accordingly, an output and an energy density may be improved by cell integration through minimization of thickness of the cathode, the anode, and the electrolyte of the all-solid battery. Further, when the bipolar all-solid battery is manufactured using high voltage stability characteristic of the solid electrolyte, difference in an elongation rate or a compression rate among the elements may be reduced to secure or improve process stability and to minimize a cell defective rate.

Abstract: The present invention provides a composite separator for a battery cell and a method for manufacturing the same. In particular, the composite separator equipped in a battery cell includes a non-woven separator comprising a high heat resistant polymer fiber that comprises a thermal deformation material on a high heat resistant polymer material. Accordingly, thermal contraction of the separator can be prevented in the high temperature condition which occurs when the battery cell is overcharged, and change of the shape of the separator can be prevented.

Abstract: Disclosed herein is a middle or large sized battery, more particularly, a middle or large sized battery that provides improved volume energy density provides an advantageous structure for preparing an end cell with large capacity, particularly by improving the structure of a can and internal connecting system of positive and negative electrodes in the middle or large sized battery. According to the present invention, a middle or large sized battery is provided which comprises a can having an open portion formed on two opposing sides; an electrode jelly roll disposed inside the can, and comprising a current collector of positive electrode, a separator, and a current collector of negative electrode being stacked in turn and wound therein; a lead tab connected to the current collector of positive and negative electrodes of opposing sides in the electrode jelly roll; and a lateral cap assembly electrically in contact with the lead tab and coupled to the opposing sides of the can.

Abstract: Provided is a device for limiting a current of electric appliance. The current limiting device includes: at least two loads; at least two load driving units connected to the loads to control applying power to the loads; a power detecting unit detecting a power type; a micom controlling the load driving unit according to the power type detected by the power detecting unit to drive the load using a current flowing into the load within an allowable value; and at least one current limiting unit connected to at least one control line connecting the micom and the load driving unit and limiting a current of the load driving unit connected to the control line when the micom malfunctions by using a control signal of the micom and a signal of the power type detected from the power detecting unit as an input signal.

Abstract: Provided is a device for limiting a current of electric appliance. The current limiting device includes: at least two loads; at least two load driving units connected to the loads to control applying power to the loads; a power detecting unit detecting a power type; a micom controlling the load driving unit according to the power type detected by the power detecting unit to drive the load using a current flowing into the load within an allowable value; and at least one current limiting unit connected to at least one control line connecting the micom and the load driving unit and limiting a current of the load driving unit connected to the control line when the micom malfunctions by using a control signal of the micom and a signal of the power type detected from the power detecting unit as an input signal.