Abstract: A battery includes: a housing having a cavity; a battery cell arranged in the cavity, the battery cell including a positive electrode plate, a negative electrode plate, and a separator; and an electrolyte solution filled in the battery cell including fluoroethylene carbonate. A width of the separator is greater than that of the positive and the negative electrode plate. The battery satisfies following relationship: C?B/20A+1, where a content of fluoroethylene carbonate in the electrolyte solution is C %, A represents a distance between an edge of the separator and that of an electrode plate on the same side, and B represents a height of the cavity. When the foregoing relationship is satisfied, deterioration of performance of the battery cell caused by insufficient electrolyte solution may be alleviated, thereby improving a value of a self-discharge coefficient k and cycling performance of the battery.

Abstract: The provided is a method and system for trajectory prediction based on Cro-IntentFormer. The method starts by preprocessing vehicle trajectory data collected by sensors to produce raw data suitable for model input. Vehicles are treated as nodes, and the distance between vehicles serves as the basis for determining whether there is an edge between two vehicle nodes. A physical relationship graph is constructed and, along with the raw data, input into a spatio-temporal feature extraction module to obtain the spatio-temporal features of the trajectory. The spatio-temporal feature matrix is then input into an intent prediction module to determine the predicted intentions of the vehicles. Based on the intent information output by the intent prediction module, a semantic relationship graph is reconstructed and input, along with the raw data, into the spatio-temporal feature extraction module to derive the semantic features of the trajectory.

Abstract: The provided are a federated reinforcement learning (FRL) end-to-end autonomous driving control system and method, as well as vehicular equipment, based on complex network cognition. An FRL algorithm framework is provided, designated as FLDPPO, for dense urban traffic. This framework combines rule-based complex network cognition with end-to-end FRL through the design of a loss function. FLDPPO employs a dynamic driving guidance system to assist agents in learning rules, thereby enabling them to navigate complex urban driving environments and dense traffic scenarios. Moreover, the provided framework utilizes a multi-agent FRL architecture, whereby models are trained through parameter aggregation to safeguard vehicle-side privacy, accelerate network convergence, reduce communication consumption, and achieve a balance between sampling efficiency and high robustness of the model.

Abstract: A battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution which includes a lithium salt, an organic solvent, a first additive, and a second additive. The first additive is selected from a cyclic silane compound containing an unsaturated bond, and the second additive is selected from at least one of fluorinated cyclic carbonate compounds. The battery satisfies 115?(a+1/5b)/(t×p)?700, where a is a mass percentage of the first additive in a total mass of the electrolyte solution in wt %, b is a mass percentage of the second additive in the total mass of the electrolyte solution in wt %, t is a mass of a single-side negative electrode active material layer per unit area in g/cm2, and p is a specific surface area of the negative electrode active material in m2/g.

Abstract: Disclosed is a battery, including: a housing having a cavity; a battery cell arranged in the cavity, the battery cell includes a positive electrode plate, a negative electrode plate, and a separator; and an electrolyte solution filled in the battery cell including fluoroethylene carbonate. A width of the separator is greater than that of the positive and the negative electrode plate. The battery satisfies following relationship: C?B/20A+1, where a content of fluoroethylene carbonate in the electrolyte solution is C %, A represents a distance between an edge of the separator and that of an electrode plate on the same side, and B represents a height of the cavity. When the foregoing relationship is satisfied, deterioration of performance of the battery cell caused by insufficient electrolyte solution may be alleviated, thereby improving a value of a self-discharge coefficient k and cycling performance of the battery.

Abstract: Disclosed are a separator and a battery including the same. An adhesive layer of the separator includes a composite material with a fibrous core-shell structure. In the composite material with a fibrous core-shell structure, the nitrogen-containing phosphate compound is encapsulated in a vinylidene fluoride polymer. When the battery is used at room temperature, the encapsulation structure is stable, the nitrogen-containing phosphate compound is encapsulated in the vinylidene fluoride polymer and stably exists in the separator, without affecting the electrical performance of the battery. In addition, the fibrous vinylidene fluoride polymer can perform excellent at bonding, and tightly bonds the separator to the positive electrode plate and negative electrode plate together, ensuring that the battery does not deform during the cycle. The battery can effectively improve the safety performance while taking into account performance of the battery at high and low temperatures.

Abstract: Disclosed are an electrolyte solution and a battery. The electrolyte solution in the present disclosure includes an organic solvent, a lithium salt, an additive A, an additive B, and an additive C, where the additive A is carbon-linked disulfonate; the additive B is a polycyano nitrile compound; and the additive C is a bis(fluorosulfonyl)imide salt. The electrolyte solution can improve high-temperature performance of the battery, involves a simple process and low costs, and achieves a good protection effect.

Abstract: A battery includes a negative electrode plate and an electrolyte solution. The negative electrode plate includes a single-sided region and a double-sided region; the double-sided region is a double-side coated area, and a total thickness of double-sided coating layers is Y, in a unit of mm. and a thickness of a single-sided coating layer is X, in a unit of mm; a ratio A of a thickness of the single-sided coating layer to a thickness of the double-sided coating layers ranges from 0.5 to 0.65; the electrolyte solution includes ethyl propionate and/or propyl propionate; based on a total weight of the electrolyte solution, a content B wt % of the ethyl propionate ranges from 0 wt % to 50 wt %, and a content C wt % of the propyl propionate ranges from 0 wt % to 60 wt %; then, 2B+C?400*(A?0.5).

Abstract: A battery includes a positive electrode material with a complete crystalline structure. The positive electrode material meets 1.3?I003/I104?3, 0.02?I006/I003?0.15, and 0.06?I006/I104?0.15. The battery further includes an electrolyte solution, the electrolyte solution includes a first additive, the first additive includes a nitrile compound, and the electrolyte solution meets the following relational expression: 3%?B?6%, where B is a percentage of a mass of the nitrile compound in a total mass of the electrolyte solution. The positive electrode material has high thermal stability, which is conducive to improving a hot box pass rate of the battery and improving high temperature storage performance and cycling performance of the battery.

Abstract: Disclosed are an electrolyte solution and a battery including the electrolyte solution. The electrolyte solution includes an organic solvent, an electrolyte salt, and an additive A; and the additive A is a selenocyanate salt. In the present disclosure, the following effects are achieved by oxidatively decomposing an electrolyte additive at a positive electrode to form a CEI film that has a high strength and is rich in inorganic matter: oxidative decomposition side reactions of the electrolyte solution are greatly reduced; and a loss of a positive electrode active material at a high temperature and a high pressure is decreased. Therefore, performance of a battery at a high temperature and a high pressure is improved, and cycling stability and high-temperature stability of the battery are improved.

Abstract: Disclosed are a battery and an electronic device. The battery includes a jelly roll, an electrolyte solution, and an aluminum-plastic film. The aluminum-plastic film includes an upper film and a lower film disposed opposite to each other, the upper film and the lower film cooperate to form an accommodating cavity, the jelly roll and the electrolyte solution are disposed in the accommodating cavity, a sealing edge is formed at a position at which the upper film and the lower film are connected, the sealing edge is configured to seal the accommodating cavity, the electrolyte solution includes a first additive, and the first additive includes a compound containing an —O—SO2— group. In this way, the performance of the battery may be improved.

Abstract: The present invention provides a polymer, preferably a degradable polymer, derived from monomers (A) and (B) and/or comprising a repeat unit of formula (Ii) and at least one terminal group of formula (II).

Abstract: A battery includes a battery cell, an electrolyte solution, and an aluminum-plastic film. The aluminum-plastic film includes an upper film and a lower film disposed opposite to each other, the upper film and the lower film are connected to form an accommodating cavity, and the battery cell and the electrolyte solution are disposed in the accommodating cavity; and the electrolyte solution includes a non-aqueous organic solvent, an additive, and a lithium salt, where the lithium salt includes lithium hexafluorophosphate and lithium bis(fluorosulfonyl)imide. In embodiments of the present disclosure, lithium hexafluorophosphate and lithium bis(fluorosulfonyl)imide are used as lithium sources. Lithium bis(fluorosulfonyl)imide does not react with water to generate hydrofluoric acid, which can effectively reduce a content of hydrofluoric acid and slow down aging of a packaging film, thereby prolonging a service life of a battery.

Abstract: A multi-task joint perception network model and detection method for traffic road surface information can simultaneously detect a lane line and a drivable area. A coordinate attention mechanism is integrated into a traditional feature extraction network to ensure that a feature extraction effect is enhanced while a calculated amount is not increased. In a neck network, a dilated convolution residual module is proposed to enhance performance of prediction of details by the network, and a decoder part shares features of the drivable area into lane line detection to enhance a lane line detection effect under complex road conditions. In a training stage, there is provided a alternating optimization training method to improve integral segmentation performance of the model. The multi-task joint perception network model and detection method realizes quite high accuracy and excellent speed performance in a challenging BDD100K dataset.

Abstract: A battery includes a positive electrode plate, a negative electrode plate, a separator, and a non-aqueous electrolyte solution. The non-aqueous electrolyte solution includes a non-aqueous organic solvent including at least ethyl propionate. The separator includes a substrate, a heat-resistant layer, and an adhesive layer, where the heat-resistant layer is disposed on at least one side of the substrate, and the adhesive layer is disposed on the heat-resistant layer. The adhesive layer includes an adhesive including a copolymer of hexafluoropropylene-vinylidene fluoride. A ratio of a mass percentage of ethyl propionate in the non-aqueous electrolyte solution to a mass percentage of hexafluoropropylene in the copolymer of hexafluoropropylene-vinylidene fluoride ranges from 0.2 to 60. The battery in the present disclosure has both a long cycle life and low expansion.

Abstract: Disclosed is a battery. And the present disclosure pertains to the field of battery technologies. The battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution, where the electrolyte solution has a contact angle ??60°. In the present disclosure, the contact angle of the electrolyte solution is increased, so that the electrolyte solution of the battery achieves high wettability for the positive electrode plate, the negative electrode plate, and the separator, so as to significantly improve cycling performance and safety performance of the battery.

Abstract: Provided are an obstacle detection method and apparatus, a device and a storage medium. The obstacle detection method may include: determining a detection planar region according to a mobile robot and a target position, wherein a distance from a point in the detection planar region to a connecting line between the mobile robot and the target position does not exceed a detection fixed value; determining a shortest distance from an obstacle to the connecting line between the mobile robot and the target position based on a vector distance method; and determining whether the obstacle is present in the detection planar region according to a result of comparison of the shortest distance with the detection fixed value.

Abstract: The embodiments of the present disclosure provide a flexible filament splicing structure, comprising a plurality of flexible filaments. Each of the plurality of flexible filaments includes a flexible substrate and at least one LED chip. The flexible substrate is provided with a conductive circuit layer. The at least one LED chip is disposed on the flexible substrate. The at least one LED chip is electrically connected with the conductive circuit layer. Two adjacent flexible filaments are electrically spliced with each other to enable the plurality of flexible filaments to form an integrated spliced structure.

Abstract: The present invention relates to the field of medical titanium alloy materials, and in particular, to a narrow-diameter high-strength implant-specific medical titanium alloy achieving immediate implant placement and a preparation method for the implant-specific medical titanium alloy. The medical titanium alloy is prepared from the following chemical components (by weight percentage), 14%-17% of Zr, 3.0%-10% of Cu, and the balance of Ti. The preparation method for the medical titanium alloy comprises: after cogging and forging and before rolling, performing heat preservation for 0.5-6 h at the temperature of 900-1200° C., and water cooling to the room temperature; and rolling at the temperature of 720-850° C., a strain rate being larger than 0.1 s?1, and a barstock obtained after rolling being used for subsequent implant processing.