Temperature control device used for preparing lithium ion battery diaphragm and using method of temperature control device

The invention provides a temperature control device used for preparing a lithium ion battery diaphragm and a using method of the temperature control device. The temperature control device is suitable for producing the lithium ion battery diaphragm. High-precision temperature control is achieved, energy consumption is reduced, turn-on stabilizing time is shortened, and potential safety hazards are eradicated. The service life of a mechanical oil way channel is long, the mechanical oil way channel is basically free of maintenance, a large amount of maintaining cost and maintaining time are saved, production losses caused by fault maintenance are reduced, and production cost is reduced.