| 摘要 |
A battery system according to the present invention includes: a battery module 10 comprising a plurality of cell groups connected in series, each comprising a plurality of cells BC1 - BC4 connected in series; a plurality of integrated circuits 3A, 3L, 3N provided to corresponding each cell group of the battery module 10, that perform detection of terminal voltages of the cells BC1 - BC4 in the corresponding each cell group, and that also perform diagnosis; and a battery controller 20 that, along with issuing commands to the plurality of integrated circuits, also receives results of detection and results of diagnosis by the plurality of integrated circuits 3A, 3L, 3N; wherein the battery system comprises a writable non-volatile memory, and data is stored in the writable non-volatile memory specifying usage environment of the battery module 10, including a maximum voltage or a maximum current of the battery module 10 and history data based upon operation history of the battery module 10. At least a first storage block and a second storage block for storing the data specifying the usage environment and the history data are set in a storage region of the non-volatile memory; if, among the first and the second storage blocks in the non-volatile memory, a storage block that has been written later is the second storage block, then, when reading out data from the non-volatile memory, data stored in the second block is read out; and it is decided whether or not this data that has been read out is normal, and, if it has been decided that the data that has been read out is normal, then, among the first and the second storage blocks, next writing of data is performed into the first storage block, that is different from the storage block from which the data was read out. |
