摘要:
A battery pack and a driving method thereof. The battery pack includes a battery cell; a charge switch and a discharge switch installed in a charge/discharge line of a battery cell; and a microcontroller to sense and store voltages of the battery cell, to compare the voltages of the battery cell before and after the microcontroller is reset, and to controls the charge switch and the discharge switch based on the sensed voltages of the battery cell such that the microcontroller turns off only one of the charge switch and the discharge switch when there is a change between the voltages of the battery cell before and after the microcontroller is reset.
摘要:
A system and method of charging a battery pack in a state in which a battery management unit (BMU) is stably woken up. In one embodiment, the system of charging a battery pack includes a battery including at least one battery cell, a connector electrically connected to the battery and a battery management unit electrically connected to the battery and to the connector, the battery management unit to control charging and discharging operations of the battery, wherein the connector includes an auxiliary power supply terminal to provide a path of supplying auxiliary power to the battery management unit when a total voltage of the battery is less than a wake-up voltage of the battery management unit.
摘要:
A battery pack and a method of sensing a voltage of the battery pack are disclosed. The battery pack has more battery cells than an individual cell voltage sensing unit can sense the voltages of. The additional battery cells are sensed using a multi-cell voltage sensing unit and digital processing.
摘要:
A method of controlling a secondary battery is disclosed. The method includes repeatedly disconnecting and connecting the secondary battery and a load as a result of a sensed current being greater than a maximum load current value, and maintaining the connected or the disconnected state according to a comparison of a second sensed current and the maximum load current value.
摘要:
A battery pack is provided. The battery pack includes first battery cells, a second battery cell coupled to one of the first battery cells, a voltage sensing and balancing circuit for measuring voltages of the first battery cells and for maintaining voltage balance between the first battery cells, a controller that includes an analog-to-digital (A/D) converter, and an analog switch for measuring a voltage value of the second battery cell and for transferring the measured voltage value to the A/D converter. The controller is for controlling charging and discharging of the first and second battery cells. The analog switch includes a flying capacitor, a first switch unit for transferring a voltage between the second battery cell and the flying capacitor, a second switch unit for transferring a voltage of the flying capacitor to the A/D converter, and a first diode for protecting a voltage source from a surge current.
摘要:
A battery pack includes a battery including a positive electrode and a negative electrode, a switching module including a charge switching device and a discharge switching device, the charge switching device and discharge switching device being electrically connected to a high current path of the battery, a battery management unit (BMU) electrically connected to the switching module, the BMU being configured to adjust a limit value for a charging current supplied by the charge switching device and to set a magnitude of the charging current supplied by the charge switching device to be equal to or less than the adjusted.
摘要:
A battery pack includes a battery including a positive electrode and a negative electrode, a switching module including a charge switching device and a discharge switching device, the charge switching device and discharge switching device being electrically connected to a high current path of the battery, a battery management unit (BMU) electrically connected to the switching module, the BMU being configured to adjust a limit value for a charging current supplied by the charge switching device and to set a magnitude of the charging current supplied by the charge switching device to be equal to or less than the adjusted.
摘要:
A battery identification (ID) setting system effectively managing a plurality of batteries and a method of driving the same. The battery ID setting system having an external terminal includes a master battery management system (BMS) outputting ID setting signals, and a plurality of slave BMSs transmitting battery information signals containing absolute battery IDs and battery potential differences of batteries to the master BMS in response to the ID setting signals. The master BMS receives the battery information signals to assign and store the relative battery IDs corresponding to the absolute battery IDs of the batteries.
摘要:
A battery management system and a battery pack. The battery management system includes a micro computer unit including an analog-to-digital converter (ADC) to measure a battery voltage, a voltage generation unit to generate a power voltage of the ADC by using the battery voltage, a voltage measuring unit to measure the power voltage, and an error calibration unit to measure a variation of the power voltage, measured by the voltage measuring unit, by using a reference power voltage, and calibrate the battery voltage, measured by the ADC, by using the measured variation.
摘要:
A charging control method for a battery pack including a plurality of battery cells in which a full charge voltage value is initially set as a first voltage value. The charging control method includes: charging the plurality of battery cells to the first voltage value in an initial charge mode; and resetting the full charge voltage value to a second voltage value less than the first voltage value in a subsequent charge mode.