| 摘要 |
The invention relates to a method of estimating the charge state of a battery cell involving the following steps: calculating (116) a prediction of the charge state SOCk of the cell using a state model comprising a state-transition matrix Fk, this prediction being contaminated with a state noise of which the covariance is given by a matrix Qk; calculating (124) a prediction ŷk of a measured value yk using an observation model comprising an observability matrix Hk, this prediction ŷk being contaminated with a measurement noise of which the covariance is given by a matrix Rk; and adjusting (102, 120) the values of the matrices Qk and Rk by means of the following relations: Qk=[N0G0, k(N0)]-1 and Rk=I, where N0 is a predetermined integer strictly greater than one, G0, k(N0) is given by the following relation: I is the identity matrix. |
