4results about How to "The calculation method is accurate" patented technology

The application discloses a kind of aluminum shell lithium battery injection quantity calculation method, the application comprehensively considers the influence of the thickness rebound of the core suction capacity, free state electrolyte volume and process pole piece on injection volume to determine total injection volume and primary / secondary injection volume, can be applied to aluminum shell and soft package core simultaneously, with high accuracy of calculation result, beneficial to defining the best injection volume, can improve product quality, reduce waste, reduce production cost.The application uses the total volume Va inside the aluminum shell core design, the solid volume Vb and solid pore volume Vc inside the core, considering the porosity of pole piece and the porosity of diaphragm, combined with the density of electrolyte, to calculate the theoretical total injection volume of the core.

This invention provides a liquid hydrogen pipeline pressure fluctuation suppression energy dissipator and a fluid-structure interaction optimization method, relating to the field of liquid hydrogen storage and transportation safety technology. The energy dissipator adopts a modular integrated design, including a damping vibration reduction module, a gradient throttling module, and a pressure buffer module. The damping vibration reduction module has a corrugated damping inner wall combining spring damping and bellows; the gradient throttling module consists of multiple throttling plates with gradient-changing orifice parameters; the pressure buffer module is separated by an inert gas chamber and a liquid chamber containing a stored liquid layer by a gas-liquid separation membrane. Simultaneously, this invention proposes a corresponding fluid-structure interaction optimization method. By establishing a fluid-structure interaction model, the physical effects of the energy dissipator are abstracted into flow resistance, flow rate, and flow capacity parameters, solved using the method of characteristics, and the energy dissipation effect is verified by optimizing structural parameters. This invention achieves multi-structure synergistic energy dissipation, reducing liquid hydrogen pressure fluctuation amplitude by more than 40%, and is cryogenically resistant and compact, making it suitable for cryogenic liquid hydrogen transportation systems in the aerospace and energy fields.

The application discloses a kind of complex fine-grained sedimentary rock reservoir evaluation method, which comprises the following steps: step 1: the reservoir to be studied as target reservoir;Step 2: target reservoir is stratified according to lithology category and thickness;Step 3: gas-bearing property in target reservoir is analyzed, and favorable stratigraphic system is preliminarily selected according to gas-bearing property characteristics;Step 4: favorable stratigraphic system, carry out stratigraphic system development scale characterization, stratigraphic system reservoir property characterization, organic matter abundance characterization and gas-bearing property characterization analysis, according to reservoir evaluation parameter and the weight corresponding to each parameter and determine the gas-bearing property evaluation index REI value of the stratigraphic system type;Step 5: according to the type of target reservoir, establish the evaluation system of complex fine-grained sedimentary rock reservoir.The application considers the heterogeneity of fine-grained sedimentary rock reservoir internal structure, and proposes a reasonable reservoir property evaluation parameter calculation method.

A method and apparatus for detecting the working parameters of a forklift includes: 1) obtaining a top-view image of the current forklift; 2) calculating the current pixel distance A1 of a first set of labels and comparing it with the initial pixel distance A0 to determine whether a change has occurred; if so, calculating the distance H1 between the current image acquisition module and the forks according to a first proportional relationship, and proceeding to step 3); if not, calculating the final height H of the current forks as H = H0; 3) determining whether a second set of labels appears in the top-view image; if so, calculating the current pixel distance B1 of the second set of labels in the top-view image and calculating the current height change value H2 of the inner mast according to a second proportional relationship, and proceeding to step 4); if not, calculating the final height H of the current forks as H = X - H1; 4) calculating the final height H of the current forks as H = (X - H1) + H2. This invention only requires the acquired image to calculate the working parameters of the forklift, eliminating the need for sensors and reducing costs.