摘要:
A battery management system to estimate a state of charge of a battery and a driving method thereof includes a sensing unit and a micro control unit. The sensing unit measures a battery voltage. The MCU measures a first time and a second time, detects first and second battery voltages that respectively correspond to the first and second times from the battery voltage, estimates an open circuit voltage by the first and second voltages, and establishes the SOC that corresponds to the OCV.
摘要:
A battery management system and a driving method thereof. The battery management system manages a plurality of battery cells, and a plurality of cell relays respectively coupled to the plurality of cells. The battery management system includes a voltage detecting unit and an MCU. The voltage detecting unit receives a first voltage corresponding to an input voltage transmitted through a 3-contact relay coupled to a first cell corresponding to the turn-on first cell relay when the first cell relay is turned on, and generating a second voltage corresponding to the first voltage. The MCU calculates an effective gain in correspondence with a ratio of the second voltage to the input voltage and controls a connection of the 3-contact relay.
摘要:
A flexible data rate matching method in a 3GPP2 system is disclosed that supports flexible data rate repetition on a physical layer of synchronous cdma2000 in an interleaving process. The process includes repeating bits of a channel encoded bitstream with one of a plurality of repetition factors, for matching a length of a repeated bitstream to an interleaving depth, or alternatively, fixing an index of an offset bit, where bit repetition of the channel encoded bitstream is started therefrom, for making the repetition pattern of the channel encoded bitstream to be a desired bit repetition pattern, fixing a repetition factor according to an initial parameter defined by the index of a fixed offset bit, repeating a bit of relevant index, and updating the initial parameter according to the fixed repetition factor, and repeating a process of fixing the repetition factor of a next bit according to the updated initial parameter, repeating the next bit, and re-updating the updated initial parameter, for matching a length of the repeated bitstream to the interleaving depth.
摘要:
Disclosed is a method of transmitting data in a communication system. A receiving part determines an optimum data transmission rate in accordance with the change of the channel environment of the receiving part, and provides the determined data transmission rate to a transmitting part. The transmitting part processes the data to be transmitted according to the transmitted optimum data transmission rate, and transmits the processed data to the receiving part. The transmitting part applies a different data coding rate or modulation type to the data to be transmitted in accordance with the determined data transmission rate. Since the optimum data transmission rate is determined in accordance with the change of the channel environment of the receiving part, an improved data throughput and re-transmission probability can be obtained with a reduced delay. Also, the insufficiency of memory capacity in the receiving part can be solved.
摘要:
A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.
摘要:
An electric vehicle battery replacement system having an ESS according to an embodiment of the present invention comprises: a battery containment facility for containing a discharged battery of an electric vehicle, and charging and storing the discharged battery; a battery transfer facility for transferring a pair of trays, in which a fully-charged battery that is fully charged by the battery containment facility is received, to a battery replacement place for the electric vehicle, and transferring the pair of trays, in which the discharged battery removed from the electric vehicle is received, into the battery containment facility; a power supply for supplying a driving power for each of the facilities; and a replacement facility operating terminal for providing a facility operating signal for each of the facilities, wherein the power supply receives, from a grid, a first power corresponding to a capacity price and a system marginal price set by the replacement facility operating terminal to use the received first power as a charging power for the discharged battery stored in the battery containment facility.
摘要:
A battery management system of a vehicle utilizing electrical energy and a driving method thereof is provided. The battery management system includes a sensing unit and a main control unit (MCU). The sensing unit detects voltage of a battery cell. MCU determines an operation state of a vehicle, and generates a sampling signal depending on the operation state of the vehicle. The sampling control signal transmits to the sensing unit, and controls the detection of the voltage of the battery cell. The operation state of the vehicle includes a running state and a stopping state.
摘要:
In a mobile communication system, an error detection code or a quality frame indicator (e.g., CRC) is generated using selectively frame information, and at least one of a WCA identifier of another terminal, and a corresponding terminal identifier. And the terminal identifier can be implicitly transmitted to the receiver.
摘要:
A battery management system and a driving method include a first switch coupled to an end of a resistor. When calculating an internal resistance of a battery, the first switch is turned on and the battery and the resistor are coupled in parallel. Then, the internal resistance of the battery is calculated by using a second current flowing to the battery and a first current flowing to the resistor.
摘要:
A battery pack is constructed with a plurality of secondary batteries or a plurality of battery assemblies, each having a plurality of unit batteries, and at least one safety switch, which can facilitate precise measurement of the voltages of the plurality of secondary batteries or battery assemblies. The battery pack is constructed with a plurality of secondary batteries, at least one safety switch electrically connected between two adjacent batteries among the plurality of secondary batteries, and a plurality of sensing lines for measuring voltages of the plurality of secondary batteries. The quantity of the sensing lines is equals to a sum of the number of the secondary batteries, and the number of the safety switches, and plus one.