Remote upgrading method

The invention discloses a remote upgrading method, which is applied to a cloud platform, and comprises the following steps: acquiring a framework network topology and an upgrading demand of a target vehicle to be upgraded, and determining a plurality of target controllers needing to be upgraded in the framework network topology according to the upgrading demand; determining the upgrade priority of each target controller according to the information processing level, the belonging network segment, the high-low voltage level and the upgrade package size of each target controller; generating a remote upgrading strategy according to the upgrading priority of each target controller, and sending the remote upgrading strategy to the target vehicle, so that the target vehicle is remotely upgraded according to the remote upgrading strategy; the remote upgrading strategy comprises parallel upgrading of the target controllers belonging to the same upgrading priority. According to the invention, grade division of the upg