ELECTRICAL SOURCE CONTROL APPARATUS

摘要

An electrical source control apparatus has a selecting device for selecting one switching element from at least two switching elements each of which constitutes predetermined arm element whose switching state should be changed to perform the electrical power conversion, when the electrical power converter performs the electrical power conversion with either one of the first and the second electricity storage apparatuses; and a controlling device for controlling the electrical power converter to change a switching state of the selected one switching element while keeping a switching state of another one switching element in an ON state, the selecting device newly selects the one switching element to reduce a difference between temperatures of the at least two switching elements each of which constitutes predetermined arm element.

主权项

1. An electrical source control apparatus which is configured to control an electrical source system,
the electrical source system comprising: a first electricity storage apparatus; a second electricity storage apparatus; and an electrical power converter having a plurality of switching elements which are electrical connected in series, each of the plurality of switching elements being located in both of a first electrical power conversion path and a second electrical power conversion path, the first electrical conversion path passing through the first electricity storage apparatus and being used to perform an electrical power conversion with the first electricity storage apparatus, the second electrical conversion path passing through the second electricity storage apparatus and being used to perform an electrical power conversion with the second electricity storage apparatus, the electrical source control apparatus comprising a controller, the controller being programmed to: select one switching element from at least two switching elements of the plurality of switching elements, each of the at least two switching elements constitutes predetermined arm element whose switching state should be changed to perform the electrical power conversion with either one of the first and second electricity storage apparatuses, when the electrical power converter performs the electrical power conversion with either one of the first and the second electricity storage apparatuses; and control the electrical power converter to change a switching state of the selected one switching element while keeping a switching state of another one of the at least two switching elements which is different from the selected one switching element in an ON state, the controller being programmed to newly select the one switching element to reduce a difference between temperatures of the at least two switching elements compared to the difference in the case where the one switching element is not newly selected, when a temperature of at least one of the at least two switching elements satisfies a predetermined condition.