Refrigerator

A refrigerator comprising:

• a main body defining a first cooling space;
• a door configured to open and close the first cooling space of the main body;
• an independent refrigerator that is detachably disposed in the first cooling space and defines a second cooling space separate from the first cooling space;
• a heat pump module disposed in the independent refrigerator and configured to cool the second cooling space of the independent refrigerator;
• a main body power supply part that is disposed in the main body and configured to supply power;
• and
• an independent power supply part disposed in the independent refrigerator,
• wherein the independent refrigerator comprises:
• an outer housing defining an external shape of the independent refrigerator,
• an inner housing defining the second cooling space of the independent refrigerator, and
• a storage compartment configured to be inserted into or withdrawn from the inner housing,
• wherein the heat pump module is disposed in a space defined between the outer housing and the inner housing,
• wherein the independent power supply part comprises a battery,
• wherein the independent power supply part is electrically connected to the main body power supply part through a power cable disposed at a side of the first cooling space of the main body, and
• wherein the power cable is disposed in a cable box that is disposed in the main body but not to invade the first cooling space, and wherein the cable box is configured to, based on a surface of the cable box being opened toward the first cooling space, be in fluid communication with the first cooling space.