Operation and maintenance data transmission method and device of energy storage system, and computer equipment

The invention relates to an operation and maintenance data transmission method and device of an energy storage system and computer equipment. The method comprises the following steps: in response to a start link instruction, establishing a transmission link between the energy storage converter and the operation and maintenance tool; the wireless frequency of the wireless communication module is switched to a public wireless frequency band, a data frame sent by the operation and maintenance tool is received, the data frame is transmitted to the energy storage converters, and the public wireless frequency band is the frequency band where the operation and maintenance tool communicates with all the energy storage converters; under the condition that a response frame replied by the energy storage converter is received within preset time, the wireless frequency of the wireless communication module is switched into a private wireless frequency band, and the private wireless frequency band is the frequency band of c