Augmentation nodes and associated systems and methods

An augmented energy storage system, comprising:

• a first battery power bus;
• a second battery power bus;
• one or more first batteries, each first battery being electrically coupled between the first battery power bus and the second battery power bus without use of a power converter;
• a plurality of augmentation nodes electrically coupled between the first battery power bus and the second battery power bus, each augmentation node including a respective augmentation battery and respective augmentation power converter;
• and
• a controller configured to control operation of the respective augmentation power converter of each augmentation node at least partially based on state of health of the one or more first batteries.

A method for augmenting one or more batteries in an energy storage system, the method comprising:

• exchanging energy between one or more first batteries of the energy storage system and a source/load;
• augmenting the one or more first batteries of the energy storage system via one or more augmentation batteries of an augmentation node;
• electrically buffering the one or more augmentation batteries from the one or more first batteries via one or more augmentation power converters electrically coupled between the one or more augmentation batteries and the one or more first batteries;
• and
• controlling operation of the one or more augmentation power converters to regulate at least one of (a) magnitude of current flowing between the augmentation node and the source/load, (b) magnitude of power flowing between the augmentation node and the source/load, and (c) impedance of the augmentation node from a perspective of the one or more first batteries, at least partially based on state of health of the one or more first batteries.