STRING CURRENT LIMITED BATTERY CHARGING CONTROL

摘要

Systems and methods for charging a plurality of battery strings are provided. The individual string current of each of the individual battery strings can be monitored and used to regulate a charging output provided by the charger. For instance, the output voltage of charger can be controlled as part of a closed loop control system based on the individual string current of the battery string under the constraint of an individual string current limit and/or a charging voltage limit. As the charging voltage of the charger increases as a result of the closed loop control based on the individual string current, other battery strings can be coupled to the charger when the charging voltage provided by the charger exceeds a battery string voltage associated with the battery string.

主权项

1. A battery system, comprising:
a plurality of battery strings, each battery string including one or more batteries or battery cells; a plurality of battery string contactors, each battery string contactor associated with at least one of the plurality of battery strings; a charger operable to provide a charging voltage to each of the plurality of battery strings via the battery string contactor associated with the battery string; one or more control devices, the one or more control devices configured to control a charging output of the charger based at least in part on a string current of at least one of the plurality of battery strings; wherein the one or more control devices are configured to control the plurality of battery string contactors to couple each of the battery strings to the charger when a charging voltage of the charger exceeds a battery string voltage associated with the battery string.