摘要:
An apparatus estimates SOH of a battery based on a battery voltage variation pattern. A data storing unit obtains and stores battery voltage, current and temperature data from sensors, at each SOH estimation. A first SOC estimating unit estimates first SOC by current integration using the battery current data. A second SOC estimating unit estimates open-circuit voltage from the voltage variation pattern, and calculates and stores second SOC corresponding to the open-circuit voltage and temperature using correlations between the open-circuit voltage/temperature and SOC. A weighted mean convergence calculating unit calculates and stores convergence value for weighted mean value of ratio of the second SOC variation to the first SOC variation. A SOH estimating unit estimates capacity corresponding to the weighted mean convergence value using correlation between the weighted mean convergence value and the capacity, estimates relative ratio of the estimated capacity to an initial capacity, and stores it as SOH.
摘要:
An apparatus for estimating resistance characteristics of a battery includes a data storing manager for obtaining and storing battery voltage, current and temperature data of a battery, whenever estimating a battery resistance characteristic; an open circuit voltage calculator for calculating battery open circuit voltage from a battery voltage variation pattern measured at the present and in the past; a weighted mean resistance calculator for calculating a battery resistance parameter from a battery current and a difference between the battery open circuit voltage and a battery voltage, and calculating a weighted mean resistance from battery resistance parameters calculated at the present and in the past; a weighted mean resistance convergence calculator for calculating a weighed mean resistance convergence value by repeatedly calculating a weighted mean sequence using the weighted mean resistance as an initial condition; and a resistance characteristic estimator for estimating a battery resistance from the weighted mean resistance convergence value.
摘要:
Methods for producing silver-bonded antimicrobial moist wound dressings include adding a silver-containing compound to a 0.1-30% aqueous solution of an alkaline solvent to dissociate silver ions from the silver-containing compound; dissolving CMC in water or an organic solvent to obtain a CMC solution; mixing the silver ion-containing solution with the CMC solution so that the hydrogen ions (H+) of the hydroxyl groups of the CMC are replaced by the silver ions to prepare a silver-CMC compound; dispersing and absorbing the silver-CMC compound in a medium; and drying the medium.
摘要:
Provided is an apparatus for measuring current and voltage of a secondary battery pack in synchronization manner, comprising a voltage measurement circuit for periodically measuring and outputting the level of a charging voltage of each of a plurality of battery cells contained in a battery pack; a current measurement circuit for periodically measuring and outputting the level of current flowing into or out of the battery pack; and a control unit for synchronizing a time difference between a current measurement time point of the battery pack and a voltage measurement time point of each battery cell with a reference delay time.
摘要:
Disclosed herein is an apparatus for collecting game data in order to test performance of a game server. The apparatus includes a capture and filtering module, a control module, and a data management module. The capture and filtering module captures packets, transmitted and received between the game server and each of a plurality of game clients, using the plurality of game clients, and extracts a plurality of necessary data by performing filtering on the results of the capturing. The control module determines the movement route of a game character in such a way as to correspond to the plurality of necessary data, and controls the plurality of game clients based on the movement route. The data management module stores and manages the plurality of necessary data.
摘要:
An anti-reflective coating composition includes a solvent and about 20 to about 35 percent by weight of a polymer prepared by a condensation reaction of an acrylate polymer including a hydroxyl group with a derivative of muramic acid and a derivative of mandelic acid.