Lithium battery remaining capacity estimation method, apparatus and device, and medium

The invention discloses a lithium battery remaining capacity estimation method, which belongs to the technical field of batteries, and comprises the following steps: preprocessing open source lithium battery discharge data to obtain a source domain data sample with time sequence characteristics; constructing a global feature encoder based on a gating circulation unit and a Shenchang differential equation; processing the source domain data sample through a global feature encoder to obtain a global feature time sequence; training an ordinary differential equation through the global feature time sequence to obtain a source domain model; the method comprises the following steps: receiving constant-current discharge process data of a lithium battery and preprocessing the data to obtain a target domain data sample with time sequence characteristics; training the source domain model by using a target domain data sample to obtain a target domain model; and estimating the remaining capacity of the lithium battery by u