Abstract: A battery management system, a battery pack, an electric vehicle, and a battery charging time prediction method are provided. The battery management system includes a memory for storing a first charge reference map in which a total of M×N charge rates are recorded, a sensing unit for detecting voltage, current, and temperature of a battery, and a control unit for determining a SOC estimation value of the battery. The control unit determines a mth charge rate associated with a mth SOC section to which the SOC estimation value belongs and a temperature section to which the temperature detection value belongs, from the first charge reference map. The control unit determines a predicted charging time value in the mth SOC section, based on the mth charge rate and a SOC difference between the SOC estimation value and an end point of the mth SOC section.

Abstract: A battery management system, a battery pack, an electric vehicle and a battery charging time prediction method are provided. The battery management system includes a memory for storing a plurality of reference charging maps, a sensing unit for detecting voltage, current, and temperature of a battery, and a control unit for determining an estimated SOC value of the battery. Each reference charging map includes first to Mth reference current values and first to Mth reference power curves associated with first to Mth SOC sections. The control unit obtains a mth reference power curve and a mth reference current value associated with a mth SOC section to which the estimated SOC value belongs, from the reference charging map associated with the temperature section to which the temperature detection value of the battery belongs.

Abstract: The present disclosure is directed to providing an SOC estimating apparatus and method, which may accurately estimate OCV and SOC of a battery cell even when a voltage rough graph of the battery cell exhibits a nonlinear rough graph. According to an aspect of the present disclosure, the SOC estimating apparatus has an advantage of estimating the SOC of the battery cell more accurately and more reliably. In addition, the SOC estimating apparatus has an advantage of estimating the final SOC of the battery cell quickly even in an environment where it is difficult to secure a sufficient rest period, by estimating the second SOC based on voltage information obtained during the charging and discharging interruption time.

Abstract: The present disclosure is directed to providing an SOC estimating apparatus and method, which may accurately estimate OCV and SOC of a battery cell even when a voltage rough graph of the battery cell exhibits a nonlinear rough graph. According to an aspect of the present disclosure, the SOC estimating apparatus has an advantage of estimating the SOC of the battery cell more accurately and more reliably. In addition, the SOC estimating apparatus has an advantage of estimating the final SOC of the battery cell quickly even in an environment where it is difficult to secure a sufficient rest period, by estimating the second SOC based on voltage information obtained during the charging and discharging interruption time.

Abstract: A peer-to-peer communication system in a partial mesh network includes a relay server configured to add, to a relay list, subscription information of a reception terminal included in a data subscription request in response to the data subscription request received from the reception terminal and a transmission terminal configured to receive the data subscription request from the relay server and add the subscription information of the reception terminal to a server transmission list.

Abstract: This invention relates to an aluminum pouch film for a secondary battery, including an aluminum layer; an outer layer formed on the first surface of the aluminum layer; a first adhesive layer for adhering the aluminum layer and the outer layer; an inner layer formed on the second surface of the aluminum layer and configured to include a crosslinked polymer layer; and a second adhesive layer for adhering the aluminum layer and the inner layer.

Abstract: The present invention relates to an ultrashort pulse laser processing device. The ultrashort pulse laser includes a stage a transfer member, a front confocal microscope, a front laser generating unit, and a front highpowered lens. A sample is provided on the stage to be processed, the transfer member transfers the stage, and the front confocal microscope is provided above the stage. The front laser generating unit is provided between the front confocal microscope and the stage to generate an ultrashort pulse laser, and the front high-powered lens focuses the laser provided from the front laser generating unit.

Abstract: The present invention relates to an ultrashort pulse laser processing device. The ultrashort pulse laser includes a stage a transfer member, a front confocal microscope, a front laser generating unit, and a front highpowered lens. A sample is provided on the stage to be processed, the transfer member transfers the stage, and the front confocal microscope is provided above the stage. The front laser generating unit is provided between the front confocal microscope and the stage to generate an ultrashort pulse laser, and the front high-powered lens focuses the laser provided from the front laser generating unit.