| CPC H02J 7/00036 (2020.01) [H01M 10/425 (2013.01); H01M 10/441 (2013.01); H01M 50/543 (2021.01); H02J 7/0014 (2013.01); H02J 7/00047 (2020.01); H02J 7/0047 (2013.01); H01M 2010/4271 (2013.01); H02J 7/0024 (2013.01)] | 8 Claims |
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1. A method of controlling an electric system including a first control circuit and a plurality of modules arranged in series between first and second terminals, each module in the plurality of modules comprising third and fourth terminals, at least one of the third and fourth terminals of each module in the plurality of modules being coupled to one of the third and fourth terminals of another module in the plurality of modules, each module in the plurality of modules having electric cells and switches coupling the electric cells to one another and to the third and fourth terminals of one module in the plurality of modules and one of a second control circuits, the electric system further including at least a first data transmission bus coupling the first control circuit to each one of the second control circuits, the method comprising:
determining, by the first control circuit, a first priority table associated with a charge operation of the electric system and a second priority table associated with a discharge operation of the electric system, the second priority table being different from the first priority table, the first priority table comprising a first classification of priority levels of the electric cells for the charge operation according to a first criteria and the second priority table comprising a second classification of priority levels of the electric cells for the discharge operation according to a second criteria, the first criteria and the second criteria being each chosen among a group comprising electric cell temperature, state of charge of the electric cell, and voltage across the electric cell, wherein a first order of the cell priority levels, from a highest priority to a lowest priority, of the first priority table not being an inverse of a second order of the cell priority levels of the cells, from a highest priority to a lowest priority, of the second priority table, the method further comprising successive steps of:
a) receiving a set point by the first control circuit; and
b) determining first control signals for connecting or disconnecting at least one of the electric cells of the plurality of modules to follow said set point according to the first classification during the charge operation and according to the second classification during the discharge operation,
wherein the electric system includes a memory having chained lists stored therein, each chained lists having elements, each of the elements includes an identifier of one of the electric cells and at least a first pointer designating another element of the elements in one of the chained lists, a first chained list among the chained lists being associated with the charge operation of the electric system and a second chained list among the chained lists being associated with the discharge operation of the electric system, wherein step b) comprises determining the first control signals for connecting or disconnecting of one of the electric cells of the plurality of modules to follow the set point based on the first chained list during the charge operation and on the second chained list during the discharge operation,
comprising determining, by the first control circuit, at least one first element among the elements of one of the chained lists, of a new value of a second pointer designating a second element in the chained list or a third element in another chained list of the chained lists, and wherein step b) comprises the successive steps of:
c) determining whether the first and second pointers of said element are different; and
d) if the first and second pointers are different, replacing the first pointer with the second pointer and determining second control signals for connecting or disconnecting a electric cell corresponding to the identifier of the first element, and
wherein step d) comprises, connecting the electric cell corresponding to a first identifier of the first element, transmitting the second control signals to disconnect the electric cell corresponding to a second identifier of a fifth element and disconnecting the electric cell corresponding to the first identifier of the first element, transmitting the second control signals to connect the electric cell corresponding to the second identifier of a fifth element.
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