摘要:
A battery system having components with reduced maximum voltage tolerance requirements is disclosed. The battery system includes a battery pack with battery modules, and measuring units, which are connected to the battery modules. The measuring units have first analog front ends (AFEs) for monitoring the at least two battery modules. Each first AFE is configured to transmit information related to the monitored characteristic via an isolator to a processor configured to control the battery pack based on the transmitted information. The isolator receives the transmitted information from an AFE which is not connected to the battery module having the least electric potential or to the battery module having the greatest electric potential.
摘要:
A method of charging a battery pack including at least one secondary battery includes charging the secondary battery using a constant current-constant voltage method, measuring a charging voltage applied to the secondary battery, interrupting the charging the secondary battery when the charging voltage of the secondary battery is equal to or higher than a first set voltage, measuring an open circuit voltage (OCV) of the battery pack in during or after a second time period after the charging has been interrupted, and terminating the charging of the battery pack when the measured OCV is equal to or higher than a second set voltage.
摘要:
A battery pack includes a battery cell, a charge-blocking unit, a voltage sensing and balancing circuit, and a microcomputer, the microcomputer including a controller that detects at least one selected from the group of abnormal analog-to-digital conversion, abnormal voltage, and abnormal temperature of the battery cell, the controller outputting a charge control signal to the charge-blocking unit to inhibit charging of the battery cell.
摘要:
An energy storage system having a number of trays with each tray having a number of battery cells in which power is controllably stored and discharged. A first Battery Management System (BMS) is electrically coupled to a tray contained in a rack of trays. A second BMS is electrically coupled to and controls the first BMS. The first BMS includes a control unit electrically coupled to and controlling the battery cells. It further includes a switch unit electrically coupled to the control unit and selectively applying driving power according to a control signal from the second BMS.
摘要:
A battery system simulation apparatus that enables a battery system to be stably driven by using simulation data. The battery system simulation apparatus includes a voltage simulator that outputs an imaginary simulation voltage corresponding to a battery included in a battery system, to a battery management unit for controlling the battery, and a simulation verification unit that receives control results of the battery which is generated in dependence upon the imaginary simulation voltage. The control results are transmitted by the battery management unit.
摘要:
An energy storage system which balances cell voltages and a method of balancing cell voltages are disclosed. The system and method use a temperature of balancing resistors to determine a time for the balancing resistors to be selectively connected across battery cells so as to balance the battery cells.
摘要:
A circuit for measuring voltage of a battery and a power storage system using the same. According to one aspect, the circuit includes a switching element connected to the battery and configured to output a first signal at a first voltage level. The switching element is configured to be turned-on in response to a voltage measuring control signal. The circuit also includes a voltage conversion circuit connected to the switching element. The voltage conversion circuit is configured to output a second signal at a second voltage level that is proportional to the first voltage level. An analog-digital converter is configured to receive the second signal and convert the received second signal into a digital signal. A controller is configured to transfer the voltage measurement control signal to the switching element, and receive the digital signal from the analog-digital converter.
摘要:
An energy storage system which balances cell voltages and a method of balancing cell voltages are disclosed. The system and method use a temperature of balancing resistors to determine a time for the balancing resistors to be selectively connected across battery cells so as to balance the battery cells.
摘要:
An energy storage system having a number of trays with each tray having a number of battery cells in which power is controllably stored and discharged. A first Battery Management System (BMS) is electrically coupled to a tray contained in a rack of trays. A second BMS is electrically coupled to and controls the first BMS. The first BMS includes a control unit electrically coupled to and controlling the battery cells. It further includes a switch unit electrically coupled to the control unit and selectively applying driving power according to a control signal from the second BMS.
摘要:
An apparatus for controlling a battery pack and an energy storage system including the apparatus are disclosed. In one embodiment, the battery pack includes at least one battery tray each including one or more battery cells. The apparatus may include an open circuit voltage (OCV) calculator and a state of charge (SOC) estimator. The OCV calculator may receive OCV measurement values of the battery cells of each battery tray when the power of the battery pack is turned on, and calculate a final OCV of the battery cells based at least in part on the OCV measurement values. The SOC estimator may extract an SOC value corresponding to the final OCV from an SOC table and estimate the extracted SOC value as an initial SOC.