Vehicle cloud communication method and communication system in multi-cloud environment

The invention belongs to the technical field of Internet of Vehicles, and particularly relates to a vehicle cloud communication method and communication system in a multi-cloud environment. The communication method comprises the following steps: the security chip is installed on a vehicle after being filled with a quantum key sequence and a security chip identity number, and vehicle registration information is synchronized to each cloud platform; after the vehicle generates a vehicle cloud key, the vehicle cloud key is encrypted by using a preset key in the slave security chip, and the encrypted vehicle cloud key and vehicle data are sent to the cloud platform in the current service area; the cloud platform in the current service area extracts the corresponding preset secret key and decrypts the preset secret key to obtain the vehicle cloud secret key and the vehicle data; and the cloud platform in the current service area negotiates with the cloud platform in the next service area to obtain a cloud platform