Three-dimensional different-direction flow channel type functional heat exchange module and heat exchanger

The invention belongs to the technical field of heat exchangers, and particularly relates to a three-dimensional different-direction flow channel type functional heat exchange module and a heat exchanger. A heat exchange medium flow channel is of a sequentially stacked structure of a first main flow channel, a first auxiliary flow channel, a second auxiliary flow channel and a second main flow channel, the first main flow channel and the first auxiliary flow channel communicate with each other to form an upper-layer heat source cavity, and the second main flow channel and the second auxiliary flow channel communicate with each other to form a lower-layer heat source cavity; in the same layer of heat source cavity, the flow area of the main flow channel is larger than that of the auxiliary flow channel, and the main flow channel and the auxiliary flow channel intersect with each other, so that communication points which are communicated with each other are formed at the intersection points; in the stacking dir