Abstract: A method for calculating a terminal voltage of a lithium battery based on an electrochemical model, an apparatus, and a medium are provided. The method includes: constructing the electrochemical model of the lithium battery, and dividing the lithium-ion battery into three domains comprising an anode domain, a separator domain, and a cathode domain; numerically simulating the electrochemical model in the three domains respectively using the Chebyshev spectral method, and respectively obtaining distribution data of a liquid-phase potential, overpotential, and open-circuit voltage of the anode and the cathode; obtaining solid-phase potential distribution data of the anode and the cathode, based on discrete data of the liquid-phase potential, overpotential, and open-circuit voltage of the anode and the cathode; and obtaining the terminal voltage of the lithium battery based on the solid-phase potential distribution data of the anode and cathode.

Abstract: The invention provides a method and system for decoupling electric field of electrochemical model based on a parallel targeting method. The method includes selecting a negative or positive electrode region as a calculation region; selecting a solid or liquid phase current as an observed quantity, and a solid and liquid phase potential as a costate variable; inserting nodes between two endpoints of the calculation region, and determining a target value of the observed quantity of each node; constructing N calculation units; respectively performing a target shooting on the N calculation units; and determining whether a distance between the target shooting value of the observed quantity of the end point of each calculation unit and the target value of the observed quantity of the node corresponding to the end point of the calculation unit is within a preset range.

Abstract: The invention discloses a method for step parameter identification based on an electrochemical model, including: identifying a first type of electrochemical parameters through a reduced-order electrochemical model by utilizing different preset charge-discharge rate data; determining a first type of target electrochemical parameters identified by the reduced-order electrochemical model through extrapolation; the first type of target electrochemical parameters including an approximate value of the first type of electrochemical parameters or the first type of electrochemical parameters at a specific rate; identifying the first type of electrochemical parameters, which includes solid-phase lithium concentration and exchange current, through a full-order electrochemical model by taking the first type of target electrochemical parameters as actual values of the first type of electrochemical parameters of the full-order electrochemical model; and identifying a second type of electrochemical parameters, which include

Abstract: Disclosed herein are techniques for enhancing online or digital platforms by enabling them to intelligently suggest physical meeting locations to one or more users of the platforms. In one embodiment, a method includes detecting an intent of a first user to meet at a physical location based upon messages exchanged between the first user and a second user via a messaging platform, selecting a list of physical locations from a pre-configured list of physical locations based upon information associated with the first user, and causing the list of physical locations to be displayed to the first user. In response to receiving information indicating selection of a first physical location from the list of physical locations from the first user, information identifying the first physical location can be displayed to the second user for the second user to accept or reject the first physical location.

Abstract: Disclosed herein are techniques for enhancing online or digital platforms by enabling them to intelligently suggest physical meeting locations to one or more users of the platforms. In one embodiment, a method includes detecting an intent of a first user to meet at a physical location based upon messages exchanged between the first user and a second user via a messaging platform, selecting a list of physical locations from a pre-configured list of physical locations based upon information associated with the first user, and causing the list of physical locations to be displayed to the first user. In response to receiving information indicating selection of a first physical location from the list of physical locations from the first user, information identifying the first physical location can be displayed to the second user for the second user to accept or reject the first physical location.