Novel fuel cell bipolar plate and fuel cell

The invention provides a novel fuel cell bipolar plate and a fuel cell. At least one height converging and scattering structure and one width converging and scattering structure are arranged on a flow channel of the bipolar plate. The contraction section and the expansion section of the width and height convergence and dispersion structure are the same or different in shape and size; and the number, the position, the size and the period of the width and height converging and scattering structures of the same runner and different runners are the same or different. The shape, the size and the arrangement of the width and height convergence structures need to be designed according to the requirements of water vapor transmission, thermal management and power density of the battery, so that the optimal reaction gas distribution, drainage and heat dissipation performance is achieved. Based on the design concept of flow field overall structure optimization, the specific size and the arrangement mode of the convergin