Refrigeration equipment and refrigeration method thereof

The invention provides refrigeration equipment. The refrigeration equipment comprises a refrigeration unit, a heat radiation piece, a refrigeration piece, heat switches and a power source system. The refrigeration unit comprises an electrocaloric material and an electrode, wherein the electrocaloric material is ferroelectric and relaxor ferroelectric ceramics or polymers with an electrocaloric effect; the electrode is made of metal with good heat conduction and electricity conduction performance; the two sides of the electrocaloric material are connected with the heat switches; the heat switches can realize connection or disconnection of heat conduction between the electrocaloric refrigeration unit and the heat radiation piece as well as between the electrocaloric refrigeration unit and the refrigeration piece; the refrigeration unit is connected with a main power source; and each heat switch is connected with an independent power source. On the one hand, environmental pollution is relieved; and on the other