The invention relates to the technical field of
drying devices, and discloses a combined
coating device for
perovskite batteries, which comprises a
drying device, a conveying structure is arranged in the
drying device, and the inside of the drying device is sequentially divided into an
infrared drying section, a hot
air drying section and a low-pressure drying section along the conveying sequence of the conveying structure. The low-pressure drying section, the
infrared drying section and the hot
air drying section are divided into two spaces through a partition plate, only holes allowing the
metal foil to pass through are reserved, an
infrared lamp is arranged above the infrared drying section, the upper portion and the lower portion of the hot
air drying section are each provided with an
air channel, and the air channels are connected with the partition plate of the low-pressure drying section. An
air heater for spraying hot air is arranged on the side, close to the conveying structure, of the
air channel, air sprayed by the
air heater is conveyed by the
air channel, part of the air in the air channel is provided by an
air pump outside the drying device, the other part of the air is pumped out of the space where the low-pressure drying section is located, and the amount of the air pumped out by the air channel in the space where the low-pressure drying section is located is larger than the air inlet amount.