Abstract: A battery management apparatus includes a switching unit configured to control electrical connection with a battery module and a controller configured to measure a voltage of a battery cell included in the battery module and to control a driving current transferred from the battery module by controlling on/off of the switching unit when the voltage of the battery cell is measured.

Abstract: A battery management apparatus according to an embodiment disclosed herein includes a power source unit including a plurality of power sources, a measurement unit configured to measure a first voltage by applying a first power source among the plurality of power sources to a battery cell and to measure a second voltage by applying a second power source among the plurality of power sources to the battery cell, and a calculating unit configured to calculate a voltage of the battery cell based on the first voltage and the second voltage.

Abstract: Discussed is a battery production system that may include a tray configured to carry a battery, a plurality of collectors configured to perform wireless communication with the tray, and a server configured to track a position of the tray and whether or not an impact occurs in the tray based on information received from the plurality of collectors, in which the tray includes a measurement unit configured to sense an impact and a communication unit configured to perform wireless communication with the plurality of collectors. The measurement unit is further configured to reduce a measurement interval at a designated first rate upon sensing the impact, and the communication unit is configured to reduce an interval of the wireless communication with the plurality of collectors at a designated second rate upon sensing the impact.

Abstract: Discussed is a protection circuit for a direct current-direct current (DC-DC) converter, the protection circuit including a buck switch connected between a voltage input terminal and a first node, the buck switch being controlled by a switching cycle and a duty cycle of a switching signal, a buck inductor connected between the first node and a voltage output terminal, a buck capacitor connected between the voltage output terminal and a ground, and a buck diode connected between a second node and the ground. The protection circuit is connected to the first node, the second node and the ground. When the buck switch is switched between an On state and an OFF state according to the switching signal, the protection circuit is configured to supply a protection voltage between the first node and the ground so that voltage stress of the buck switch is smaller than an input voltage supplied between the voltage input terminal and the ground.

Abstract: Discussed is a battery management apparatus that may include a voltage measuring unit configured to measure a voltage of a battery; a communication unit configured to output voltage information for the voltage measured by the voltage measuring unit; a power unit configured to provide an operation power to the communication unit; an environment information measuring unit configured to measure environment information including at least one of ambient temperature and humidity of the power unit; and a control unit configured to receive the measured environment information from the environment information measuring unit, judge whether the power unit is operable based on at least one of the received environment information, a capacity of the power unit, and a consumed current and a communication time consumed for the communication unit to output the voltage information, and control the communication unit according to a judgment result about whether the power unit is operable.

Abstract: A wireless charging system includes a first power receiving device connected in parallel to a first battery and including a first sub resonant circuit having a first resonant frequency, a second power receiving device connected in parallel to a second battery and including a second sub resonant circuit having a second resonant frequency, and a power transmitting device. The power transmitting device is for determining a charging order between the first battery and the second battery. The power transmitting device wirelessly transmits first alternating current (AC) power having the first resonant frequency to the first sub resonant circuit when the first battery is selected according to the charging order and wirelessly transmits second AC power having the second resonant frequency to the second sub resonant circuit when the second battery is selected according to the charging order.