8results about How to "Increase choice flexibility" patented technology

The invention discloses a day-ahead electricity price probability prediction method and device based on deep learning, and the method comprises the steps: obtaining the meteorological state data of a to-be-predicted region and the power generation data of a power generator, and constructing prediction parameters; inputting the prediction parameter into a pre-trained day-ahead electricity price probability prediction model for prediction to obtain a day-ahead electricity price probability; the training method comprises the following steps: collecting meteorological state data of a region and power generation data of a generator, and constructing a historical data set; performing visual analysis and data preprocessing on the historical data set to obtain a prediction feature parameter set; and taking the prediction characteristic parameter set as input, taking a deep neural network (DDNN) as a basic model for training, adding hyper-parameter optimization in the training process, and carrying out probability prediction on the day-ahead electricity price by using an output probability distribution parameter. According to the method, the possible fluctuation range of the predicted value can be provided, the uncertainty level of the predicted result is reflected, and information and basis are provided for decision making such as planning prediction and operation of a power system.

The invention relates to the technical field of power supplies, and provides a power supply switching circuit. The power supply switching circuit comprises a state detection module, a state clamping module and an output control module. The state detection module is used for detecting power supply access states of the first power input end and the second power input end respectively; the state clamping module generates a first output control signal and a second output control signal according to the power supply sequence; the output control module is connected with the state clamping module, is connected with an external load, responds to the first output control signal, controls the connection state of the first power input end and the power supply output end, responds to the second output control signal, controls the connection state of the second power input end and the power supply output end, and supplies power to the external load. According to the power supply switching circuit, the power supply for supplying power to the load can be determined according to the power supply access sequence of the power supplies, so that the power supply selection flexibility is improved.

The invention belongs to the technical field of batteries, and discloses a dual-ion battery and a preparation method thereof. The preparation method comprises the following steps: adding a polymer monomer in a burdening stage, uniformly dispersing the polymer monomer in a positive pole piece and a negative pole piece, finally injecting an electrolyte added with a polymer initiator, and initiating an in-situ polymerization reaction through high temperature, so that the liquid electrolyte is changed into a gel state. The invention also discloses the dual-ion battery prepared according to the method. The polymer monomers are uniformly distributed in the positive and negative pole pieces, so that the binding force of the active substance and the current collector is enhanced, and the pole piece expansion in the battery circulation process is reduced. In addition, the electrolyte is changed into a gel state, so that the oxidation potential of the electrolyte is remarkably improved, the stability of a positive and negative electrode interface is enhanced, the consumption of the electrolyte is reduced, and the safety performance of the battery is improved.

The utility model discloses a battery and an electric device. The battery comprises a box body and a cover plate assembly, the box body comprises a plurality of accommodating parts, at least one side of each accommodating part is opened to form an opening, the opening directions of at least two accommodating parts in the plurality of accommodating parts are different, and at least one battery monomer is accommodated in each accommodating part. The cover plate assembly is connected to the box body and covers the openings of the containing parts. And when the battery monomers accommodated in one accommodating part are in thermal runaway, most of heat is diffused outwards through the opening of the accommodating part. According to the battery disclosed by the utility model, the heat diffused outwards cannot be quickly and more transferred to the accommodating parts with different opening directions, so that the possibility that the battery monomers in the other accommodating parts with different opening directions are simultaneously subjected to thermal runaway when the battery monomers accommodated in one accommodating part are subjected to thermal runaway is greatly reduced, and the reliability of the battery is greatly improved.

The invention discloses a time-sharing orthogonal high-voltage excitation circuit structure, including a low-voltage sinusoidal signal generating circuit for generating four-way orthogonal low-voltage sinusoidal signals; and a signal amplifying circuit for amplifying the four-way orthogonal low-voltage sinusoidal signals. The four-way orthogonal low-voltage sinusoidal signals output by the low-voltage sinusoidal signal generating circuit are respectively connected to the channel 1 of the double-throw end of the first group of four-way single-pole double-throw analog switches, and the channel 2 of the double-throw end of the first group of four-way single-pole double-throw analog switches is all grounded; the four-way orthogonal low-voltage sinusoidal signals output by the low-voltage sinusoidal signal generating circuit are simultaneously connected to the channel 2 of the double-throw end of the second group of four-way single-pole double-throw analog switches, and the channel 1 of the double-throw end of the second group of four-way single-pole double-throw analog switches is all grounded; the single-pole ends of all single-pole double-throw analog switches are respectively connected to high-voltage operational amplifiers as output ends to amplify the output signals. The circuit structure has low cost, a certain output signal state, is not easily interfered, and has a more accurate phase difference.

The utility model discloses a kind of hydraulic retarder shafting structures, including a pair of outer spline hollow flange plate, retarder spline shaft, a pair of tapered roller bearings, a pair of shaft sleeve, stator, rotor, retarder shell, tension bolt, flange nut, multiple oil seals, O-ring and a pair of gland cap.The utility model retarder shafting structure makes retarder can be assembled as independent individual on whole vehicle drive train, improves selection flexibility, reduces matching application cost;Realize that retarder is matched as a separate whole, does not need to be integrated on gearbox, reduces concurrent fault brought by combination assembly with gearbox.

The present application provides an AMF selection method and apparatus, and a storage medium, the method applied to a radio access network RAN comprising: receiving a radio resource management RRC message sent by a terminal, the RRC message carrying a non-access stratum NAS message and attribute information of the terminal; determining a target NF type of a core network specified by the NAS message according to the attribute information of the terminal; when the target NF type is an access and mobility management function AMF, determining an alternative AMF set available for the terminal according to attribute information of the terminal; and selecting a target AMF matched with the terminal from the alternative AMF set. According to the method and the device, the requirement of on-demand connection of the interface is met under the RAN servitization architecture, and the selection flexibility of the signaling transmission path is improved.

The application discloses a control method and device of a brake pedal in a vehicle and the vehicle. The method comprises the following steps: monitoring the working state of the brake pedal in the vehicle; acquiring the driving parameter of the vehicle based on the brake pedal in response to the working state starting; and constructing at least one assist curve of the brake pedal based on the driving parameter, wherein the at least one assist curve is used to represent the relationship between the pedal strength and the longitudinal acceleration or the relationship between the pedal strength and the pedal stroke, and is used to control the brake pedal. The application solves the technical problem of low flexibility of pedal feeling selection in the vehicle.