The hypothesis for a multichannel character of the hydrogen diffusion in solids has been substantiated in the article. Based on this hypothesis, a mathematical model of hydrogen diffusion in the crystalline lattice was constructed. The model provided determining the dissolved hydrogen binding energies using an extraction curve. The curve was measured by industrial vacuum-extraction procedure with mass-spectrometric detection of hydrogen streams. The article presents various experimental data that support the validity of the multichannel model and discusses the advantages and disadvantages of the proposed approach in comparison with the well-known method of thermal desorption spectra (TDS) that is recognized as the classical way of experimental determination of the dissolved hydrogen binding energy in solids.