Energy storage device by utilizing soils

The utility model relates to an energy storage device, in particular to an energy storage device by utilizing soils which comprises a solar energy heat collecting device and a heat dissipation device and is characterized in that vertical holes for heat dissipation or heat absorption are arranged in the soils which are suitable for storing energy. Heat exchangers are arranged in the holes. The heat exchangers are communicated with each other through pipelines. The inlets or the outlets of the pipelines are connected with the solar energy heat collecting device. The energy storage device by utilizing the soils stores the solar energy in summer or superfluous solar energy and can be used cross seasons. The energy storage device utilizes the feature of low coefficient of thermal conductivity of the soils, transforms the solar energy in summer or the superfluous solar energy into heat energy through the solar energy heat collecting device, heats and stores energy of the soils. In winter, the heat energy stored in