The invention discloses a
lithium ion battery
pole piece coil
vacuum drying oven, which mainly comprises an oven cover
flange, a spiral annular flow channel jacket box body, an
air blower, a
plunger spring, a sliding unit, a
vacuum pump, a reduction motor, screw handwheels, a lifting shaft, a lifting screw, spiral annular rib vacuum cavities, sliding guide pillars, linear bearings, guide pillar bases, electric heat pipes, a
thrust bearing, a mechanical seal, a coupler, base flanges,
pole piece coil meshed board bases, lifting nuts and the like. A horizontal suspension mode is improved into an axial vertical mode. A heat insulation structure of the box body is improved by using the characteristic that heated air has light
specific weight and moves upwards and the
transpiration of
moisture is facilitated; a spiral annular flow channel jacket is arranged between the vacuum cavity and a shell, and the
air blower at the inlet of a spiral annular flow channel is used for blowing wind to the spiral annular flow channel after the
drying operation is completed, so that air in the spiral annular flow channel is rapidly subjected to
forced convection with environment and rapidly cools the vacuum cavities; and the cooling conditions for
pole piece coils are improved when the vacuum cavities are cooled, so that the time for waiting for cooling is shortened, and the production efficiency is improved.