APPARATUS AND METHOD FOR MEASURING ISOLATION RESISTANCE OF BATTERY USING EXTENDED KALMAN FILTER

摘要

The present invention can be estimated more accurately the insulation resistance of the battery by using the extended Kalman filter device and discloses a method. A first insulation unit and second insulation resistance measured resistance measurement unit each connected to resistance measuring device according to the invention are isolated battery positive terminal and the negative terminal of the battery; A switching unit such that different circuit is formed of the first insulating portion and the second insulating resistance measuring resistance measured by each unit connected to the battery's positive terminal and a negative terminal; The first insulating portion and the resistance measurement voltage detector for measuring a first detection voltage and the second dielectric insulating detecting the voltage applied to the second insulating resistance measurement unit; And controls the on-off of the switching part, and the first insulating detected voltage, the second insulating detected voltage, the battery positive terminal side of the insulation resistance and the negative terminal side of variables using the insulation resistance of the battery in the state variable and including said first isolated using the detected voltage and the second voltage detecting isolated using a state equation, including the configured parameters to predict the state variables and output variables, output variables, the predicted output variables for the voltage detector by by correcting the predicted state variables as compared with the measured output variable, and the battery comprises a positive terminal side of the insulation resistance and a controller for estimating a negative terminal side of the insulation resistance of the battery. ;