The invention provides a physical guidance multi-level
federated learning energy storage unit degradation
estimation method for heterogeneous
terminal equipment, and mainly relates to the field of
artificial intelligence and
energy storage health
estimation. The method mainly comprises the following steps: taking
power battery data of various devices such as an
electric vehicle, an unmanned aerial vehicle and a
robot as local data of a
client, and performing data preprocessing; establishing a lightweight model for each
client, and embedding a battery aging physical mechanism into a neural
network model; a multi-layer
federated learning framework is established, the first layer is a
client formed by all devices, the second layer is local servers of multiple types of devices (electric vehicles, unmanned aerial vehicles and robots), and the third layer is a central
server; designing a model screening strategy and an error
perception weighted aggregation strategy between the client and the local
server, and designing a
model compression strategy between the local
server and the central server; and obtaining a
global model through multiple rounds of training, and estimating the health state of the
power battery of the target equipment. In order to solve the problem that generalization of
power battery health
estimation in multiple heterogeneous devices is weak, a multi-level
federated learning framework is designed, meanwhile, physical mechanisms and
data modeling are combined, the limitation that the accuracy of battery health state estimation is insufficient is overcome, model estimation errors are remarkably reduced, and therefore the safety of an
energy storage system is improved.