Carbon dioxide energy storage system based on double heat storage loops and working method thereof

The invention belongs to the technical field of energy storage, relates to the technical field of compressed liquid carbon dioxide energy storage, and particularly discloses a carbon dioxide energy storage system based on double heat storage loops and a working method of the carbon dioxide energy storage system. The carbon dioxide energy storage system based on the double heat storage loops comprises a first compressor, a first cooler, a second compressor, a second cooler, a first condenser, a first carbon dioxide liquid storage tank, a first heat exchanger, a heat regenerator, a second heat exchanger, a turbine, a second condenser, a regenerator, a second carbon dioxide liquid storage tank, a first heat tank, a first cold tank and a second cold tank. An electric heating device and a second hot tank. According to the system, the two heat storage loops are arranged, temperature changes in the high-temperature heat exchange process and the low-temperature heat exchange process can be better matched, the heat ex