Abstract: A method for composite monitoring on hydrogen and a temperature of a battery energy storage power station includes: obtaining a first temperature and a second temperature of at least one monitoring point in each monitoring unit based on a group of optical fibers deployed on a battery surface in the monitoring unit, in which the group of optical fibers at least includes a first optical fiber configured to measure the first temperature of a battery body, and a second optical fiber coated with a hydrogen sensitive material configured to measure the second temperature of a battery exterior; and determining a hydrogen concentration of each monitoring point respectively based on a difference between the first temperature and the second temperature corresponding to the monitoring point.

Abstract: A lithium battery performance scoring calculation method includes acquiring data during operation of a lithium battery and uploading the data to a lithium battery performance scoring database; constructing a lithium battery performance scoring system based on the lithium battery performance scoring database from three dimensions of battery nameplate attributes, operational attributes, and environmental attributes; constructing a battery performance scoring calculation model based on a fuzzy comprehensive evaluation method, and calculating scores of respective performance metrics of the lithium battery.

Abstract: An optimal configuration method and device for energy storage capacity of an optical storage system, and apparatus and storage medium are provided, and relates to the photovoltaic field. The specific steps includes: obtaining original output data of a photovoltaic power station for step output; constructing a model of genetic algorithm, and determining algorithm parameters and a fitness function of the genetic algorithm; performing optimization operation based on the genetic algorithm and the original output data to obtain a recommended energy storage capacity, and building an energy storage device according to the recommended energy storage capacity.

Abstract: A lithium salt-free composite solid electrolyte membrane and a preparation method thereof are provided. The composition of the lithium salt-free composite solid electrolyte membrane includes: micro-nanoscale garnet-type solid electrolyte and polymer; where a mass ratio of the micro-nanoscale garnet-type solid electrolyte to the polymer is (60-100):(5-40); a particle size of the micro-nanoscale garnet-type solid electrolyte is 100 nm-2 ?m. The disclosure also provides a preparation method for the lithium salt-free composite solid electrolyte membrane. The lithium salt-free composite solid electrolyte membrane prepared by the disclosure has controllable morphology and thickness, and does not need to add lithium salt and be equipped with anhydrous and inert environment atmosphere, so that the production cost can be significantly reduced, and large-scale production is easy.