Vehicle electronic system constant-electric node state switching method, network and vehicle

The invention discloses a vehicle electronic system constant-electric node state switching method, a constant-electric node network and a vehicle. The method comprises the steps of: entering a pre-dormancy state under an activation state when a pre-dormancy condition is met; continuously monitoring states of other constant-electric nodes under the pre-dormancy state; entering a dormancy waiting state when all other constant-electric nodes are judged to maintain the pre-dormancy state, and entering the activation state when a wake-up signal is received; entering the pre-dormancy state when any one of other constant-electric nodes is monitored to be in the activation state under the dormancy waiting state, entering the dormancy state when other constant-electric nodes are monitored not to be in the activation state in a first preset time, and entering the activation state when the wake-up signal is received; and under the dormancy state, one constant-electric node continuously monitoring the states of other constant-electric nodes: entering the activation state when any one of other constant-electric nodes is monitored to be in the activation state, and entering the activation state when the wake-up signal is received.