The invention discloses a battery data
hybrid compression and reconstruction
system and method based on end-cloud
collaboration, and the method comprises the steps: a vehicle-mounted end firstly collects battery state data, carries out the differential
processing, automatically judges whether the current state is in a
steady state or a complex working condition through the calculation of a nonlinear fluctuation index of data in a
sliding time window, and generates a corresponding identifier; if the working condition is a steady-state working condition, compressing the data by adopting algebraic iteration
linear regression to obtain a slope and an intercept coefficient, and packaging the slope and the intercept coefficient into a steady-state data packet to be uploaded; and if the working condition is a complex working condition, extracting a hidden space
feature vector of the data by using a lightweight quantization
encoder, and packaging the hidden space
feature vector into an abnormal data packet to be uploaded. And the
cloud server respectively calls a linear generator or a high-precision decoder according to the data packet identifier, reconstructs the received parameters or feature vectors into original differential
time sequence data segments, and finally seamlessly splices all the data segments according to a
time sequence to restore complete and continuous battery state
time sequence data for storage and advanced analysis.