Abstract: The present invention relates to the technical field of power electronics converters and discloses a grid-forming energy storage converter on/off-grid switching control method and system, where the method includes the following steps: S1: using a single-loop power control strategy in an off-grid state when an on-grid relay of target energy storage drops out; S2: using a parallel virtual impedance loop-based power control strategy in a transient on-grid state when the on-grid relay of target energy storage pulls in; and S3: using a cascaded dual-loop power control strategy with a virtual admittance voltage loop and an inner current loop when a stable on-grid state is established. The present invention solves the problems of large current impact and unstable switching process state in the existing working strategy for on/off-grid switching in the prior art.

Abstract: A prelithiated separator for use in an electrochemical cell. The prelithiated separator includes a base film including a polymer having a melting point greater than 180° C.; a ceramic directly contacting the base film; and lithium on an outer surface of the prelithiated separator.

Abstract: A sodium ion battery includes an anode, a cathode, a separator and an electrolyte. The anode includes an anode active layer, the cathode includes a cathode active layer and the separator includes a porous film. At least one of the anode active layer, the cathode active layer or the separator have an anode zeolite layer, a cathode zeolite layer or a separator zeolite layer respectively disposed thereon.

Abstract: Methods of making functional particles, such as functional lithium ion-exchanged zeolite particles and functional electrode particles for electrochemical cells are provided as well as electrochemical cells including such particles. A method includes combining a solution including (NH4)3PO4 with lithium ion-exchanged zeolite particles to form a first mixture. The method further includes adding a polymeric binder and a lithium salt to the first mixture to form a first slurry including the functional lithium ion-exchanged zeolite particles comprising Li3PO4.

Abstract: Provided is a dual-neighborhood wear angle automatic detection method, including constructing a proximal neighborhood and establishing grayscale differences between a pixel in a center area and pixels having first directions in the proximal neighborhood; calculating, based on the grayscale differences, deviation degrees of all pixels in the center area in the first directions; calculating a similar direction value based on the deviation degrees; constructing a distal neighborhood and focus pixels having second directions in the distal neighborhood; calculating grayscale differences between the pixel and the focus pixels; calculating deviation degrees of all pixels in the center area, in the second directions based on the grayscale differences between the pixel and the focus pixels; calculating a direction value of a wear angle based on the deviation degrees in the second directions; and calculating the wear angle based on the direction value of the wear angle.

Abstract: The invention provides novel bis-pyridylpyridones which are antagonists at the melanin-concentrating hormone receptor 1 (MCHR1), pharmaceutical compositions containing them, processes for their preparation, and their use in therapy and for the treatment of obesity and diabetes.