Metal powder drying apparatus using a plurality of plates including a heater

A metal powder drying apparatus using a plurality of plates including a heater for manufacturing a secondary battery, the metal powder drying apparatus comprising:

• a drying furnace having raw metal powder used in the manufacturing of the secondary battery input into one side thereof and having an upper portion in a hemispherical dome structure;
• a heating unit including the plurality of plates and provided on the one side of the drying furnace to heat the drying furnace;
• a raw material input unit connected to the upper portion of the drying furnace and inputting the raw metal powder into the drying furnace;
• a stirring unit installed in the drying furnace and stirring the raw metal powder input into the drying furnace;
• a driving unit installed on an upper portion of the metal powder drying apparatus and providing a speed to the stirring unit;
• and
• a control unit controlling the heating unit, the stirring unit, and the driving unit,
• wherein the plate includes:
• a heater provided inside the plate to receive power and generating heat;
• and
• a temperature sensor provided inside the plate to measure a temperature of the plate and transmitting a measured value to the control unit,
• the heating unit includes:
• a first heating unit including the plurality of plates at a center of a bottom surface of the drying furnace;
• a second heating unit including the plurality of plates along an outer side of the first heating unit at the bottom surface of the drying furnace;
• and
• a third heating unit including the plurality of plates on an outer side surface of the drying furnace in a circumferential direction, and
• the control unit controls a heat generation amount of each of the plurality of plates based on each of the measured values of temperature sensor.