The invention discloses a PEM water
electrolysis hydrogen production bipolar plate and a
hydrogen production unit. The PEM water
electrolysis hydrogen production bipolar plate comprises a plate body, a bionic fractal microchannel network is formed on the
anode side of the plate body, adopts a three-stage fractal
branch channel structure, and comprises a plurality of main channels, a plurality of secondary
branch channels and a plurality of micropore nozzles; the
main channel is arranged along the length direction of the plate body, one end of the
main channel is connected to a
water flow inlet of the water inlet area, the secondary
branch channels are respectively connected with the
main channel at one end and cover the reaction area of the whole
anode side, and the micropore nozzles are respectively and uniformly distributed on the secondary branch channels and are vertically arranged relative to the plate body; and the
water flow in the secondary branch channel can be ejected in the vertical direction through the micropore
nozzle. A three-dimensional fractal-stepped micro-channel structural design is adopted on the
anode side, three-dimensional turbulent flow is constructed on the anode side, the water-membrane contact efficiency is improved, and
oxygen bubbles are rapidly stripped; a design of
coupling a fishbone-microrib open runner and a gradient porous confluence area is adopted on the
cathode side, and a hydrogen confluence path with low pressure drop and high uniformity is formed on the
cathode side, so that the
hydrogen production efficiency and the performance of the
hydrogen production unit are effectively improved.