27results about How to "Reduce selection cost" patented technology

The invention discloses a multi-channel symmetrical CLLC topological structure and a power balance control method thereof, and the structure comprises a multi-channel symmetrical CLLC converter main circuit loop, a high-precision sampling module, a phase shift angle controller module, an input capacitor, an output capacitor and an equivalent load. And more efficient electric energy conversion and power management control are realized. According to the power balance control method, phase shift control is carried out on a secondary side switching tube control signal of a power loop through a fundamental wave analysis method, a forward gain formula under the control method is derived, and output gain regulation and control are carried out on converters with power errors in the multi-path symmetrical CLLC converters. And thus, the power balance control among the multi-path symmetrical CLLC converters is realized.

The invention provides a thermal runaway flue gas treatment method and a thermal runaway flue gas treatment device, which are used for effectively treating thermal runaway flue gas so as to solve the problem of potential safety hazards when the thermal runaway flue gas is discharged out of a battery shell. The thermal runaway flue gas treatment method comprises the following steps: conveying thermal runaway flue gas generated by thermal runaway of a battery into an organic solvent, and treating the thermal runaway flue gas, the organic solvent is at least one of an ester solvent, an alcohol solvent or an aldehyde solvent; and conveying the thermal runaway flue gas treated by the organic solvent into an adsorption medium for treatment. According to the combined treatment mode, the gas amount of the treated thermal runaway flue gas is greatly reduced, meanwhile, the thermal runaway flue gas is harmless, and the problem of potential safety hazards caused by the fact that the thermal runaway flue gas is discharged out of a battery shell is solved.

The invention relates to the technical field of computers, in particular to a selection method and device for a large language model corresponding to a service and a storage medium. The method comprises the steps of obtaining multiple groups of test conversations corresponding to a target service; the test dialogue comprises a cue word and a reference reply statement; according to the cue word in each group of test dialogues, generating a test reply statement corresponding to each group of test dialogues in the plurality of candidate models, and counting generation parameters of each test reply statement; the candidate model is a large language model; for each candidate model, according to the reference reply statement, the test reply statement and the generation parameter of the test reply statement corresponding to each group of test dialogues, determining the score of each candidate model for each group of test dialogues; and selecting a target large language model for the target business according to the score of each candidate model for each group of test dialogues. According to the embodiment of the invention, the selection cost can be reduced, and the evaluation efficiency of the large language model is improved.

The invention discloses anti-crack mortar for an assembly type light partition wall board. The anti-crack mortar is prepared from the following raw materials: Portland cement, redispersible latex powder, hydroxypropyl methyl cellulose ether, gypsum powder, fly ash, anti-crack fibers, water, polyphenyl granules, light mineral waste residues, a foaming agent, an early strength agent, a foam stabilizer, a waterproof agent, a water reducing agent, an accelerator and a reinforcing agent. The mortar can be used for manufacturing light partition boards or connecting two light wall materials, the manufacturing process of the wall materials produced by the mortar is simple, the wall materials are easy for later decoration, the problems of surface cracking, water seepage and easy moisture of a traditional wall board are solved, compared with the traditional wall board, the mortar has the advantages of light weight, combustion resistance, strong permeability release property and the like, the production process is pollution-free, and the mortar is suitable for large-scale popularization and application. The finished wall material is convenient to use in the building process and has high practical value.

The invention discloses an Indel site related to soybean stem diameter, a molecular marker and application of the Indel site and the molecular marker, and belongs to the field of molecular marker assisted breeding. Carrying out PCR (Polymerase Chain Reaction) amplification and detection by using an amplification primer of the molecular marker 17-10.64 by taking the molecular marker 17-10.64 as a template; when the product fragment is 199bp, judging that the soybean to be identified is a soybean strain with thin stalks; and when the product fragment is 255bp, judging that the to-be-identified soybean is a soybean strain with thicker stalks. The molecular marker 17-10.64 contains an Indel site related to the soybean stem diameter, the Indel site is located at the No.17 chromosome 1, 064, 063 bp of the soybean, and the polymorphism is an amplified fragment difference of 56bp. According to the method, the soybean breeding time is shortened, the soybean breeding efficiency is improved, and powerful support is provided for efficiently developing and utilizing wild soybean germplasm resources and rapidly breeding lodging-resistant high-quality soybean varieties with thick and strong stalks.

The invention relates to the field of integrated circuit technology and the like, discloses a frequency multiplication amplification link capable of switching output of different frequency multiplication ratios, and realizes that when fundamental waves are input, signals of different frequency multiplication ratios can be output through logic switching, the bandwidth of the output signals is improved, so that the flexibility of the circuit is improved, the application scene of the circuit is widened, and the reliability of the circuit is improved. Comprising at least one stage of switchable frequency doubling / amplifier unit and at least one stage of ultra-wideband distributed amplifier, and the first stage of ultra-wideband distributed amplifier is connected in series behind the first stage of switchable frequency doubling / amplifier unit; the switchable frequency doubling / amplifier unit comprises an input matching unit, a biasing circuit, a transistor NM1, an inductor L1 and an adjustable output matching unit, the input matching unit is connected to the second end of the transistor NM1, the first end of the biasing circuit is connected with the second end of the transistor NM1, the second end of the biasing circuit is connected to a high gate voltage VGH or a low gate voltage VGL through on-off of a logic switch, and the adjustable output matching unit is connected to the second end of the transistor NM1. The third end of the transistor NM1 is connected with a power supply VDD through an inductor L1, and the third end of the transistor NM1 is connected with an adjustable output match.

The invention discloses a dual-hub airline network optimization method and system, and belongs to the technical field of civil aviation flight, and the method comprises the steps: building a dual-hub airline efficiency evaluation index system through obtaining an input index, an output index and an environment variable for evaluating the efficiency of a to-be-optimized dual-hub airline, and carrying out the efficiency evaluation of the dual-hub airline. The technical efficiency value of each route of the to-be-optimized dual hub is obtained to analyze the operation characteristics of the dual hub airport, and the principles of reduction of the coincidence rate, efficient operation of the route network, convenience of passengers and minimum route adjustment amplitude are put forward. And establishing a dual-hub airline network optimization model by taking the minimum airline overlap ratio, the minimum airline efficiency mismatching degree, the minimum passenger departure airport selection cost and the minimum airline flight adjustment amount as targets, performing solving, and optimizing the network layout of the dual-hub airline to obtain an optimization result. According to the method, the efficiency is evaluated before optimization, the double-hub overall route efficiency is improved, and differentiation and high efficiency of a double-hub route network can be achieved.

According to the battery pack provided by the utility model, the flue gas treatment unit is integrated in the box body of the battery pack, and the flue gas treatment unit can be used for completely and thoroughly treating thermal runaway flue gas generated by the single batteries in the battery pack, so that hidden dangers generated after the thermal runaway flue gas is exhausted are avoided, and the use safety of the battery pack is improved. The battery pack comprises a box body, a battery module and a flue gas treatment unit, an inner cavity of the box body is divided into a battery bin and a flue gas treatment bin through a first partition plate. The battery module is arranged in the battery compartment; the flue gas treatment bin comprises a first treatment cavity and a second treatment cavity; the flue gas treatment unit comprises a liquid treatment medium and a solid treatment medium; the first treatment cavity is filled with the liquid treatment medium, and the liquid treatment medium is mainly used for treating electrolyte in battery thermal runaway flue gas; the second treatment cavity is filled with the solid treatment medium, and the solid treatment medium is used for completely treating residual gas treated by the liquid treatment medium.

The invention provides a thermal runaway flue gas treatment method and a thermal runaway flue gas treatment device which are used for effectively treating thermal runaway flue gas so as to solve the problem of potential safety hazards caused by the fact that the thermal runaway flue gas is discharged out of a battery shell. The thermal runaway flue gas treatment method provided by the invention comprises the following steps: conveying thermal runaway flue gas generated by thermal runaway of a battery to 0.05-0.5 mol / L of an alkali solution, and treating the thermal runaway flue gas by the alkali solution; and carrying out ignition treatment on the thermal runaway flue gas treated by the alkali solution. Electrolyte, acid gas and the like in the thermal runaway flue gas are treated by the alkaline solution with the concentration, and then combustible gas in the residual gas is ignited, so that the treated gas does not have flammability and also has harmlessness, and the safety of an energy storage system is improved.

The invention discloses a vehicle noise reduction method and device, a storage medium and equipment, and the method comprises the steps: inputting a target road noise signal generated by a target vehicle into a pre-constructed fixed filter selection model, and predicting a target fixed filter for carrying out the noise reduction of the target vehicle; wherein the target fixed filter is determined from N fixed filters installed in the target vehicle in advance; the parameters of the N fixed filters are determined after optimal filter calculation is carried out on pre-collected road noise signals under N typical working conditions; the fixed filter selection model is obtained by jointly training the road noise signals under N working conditions and N fixed filters; and then the target fixed filter is used for carrying out filtering processing on the target road noise signal, and the inverted noise control signal obtained after filtering is played through the loudspeaker in the vehicle and is subjected to interference cancellation with the target road noise signal, so that the noise reduction effect on the target vehicle can be improved, and the selection cost of the filter is reduced.

The invention relates to the technical field of electric driving systems, and discloses an electric driving system with a hydraulic torque converter and a forklift. The system comprises a driving motor, a hydraulic torque converter, a speed reducer and a vehicle control unit, wherein a lock-up clutch is integrated in the hydraulic torque converter; an output shaft of the driving motor is connected with a pump wheel input side of the hydraulic torque converter; a turbine output side of the hydraulic torque converter is connected with an input shaft of the speed reducer; the output end of the reducer is connected with a vehicle drive axle; when the vehicle is in the low-speed large-torque demand working condition, the lock-up clutch is controlled to be separated, so that the hydraulic torque converter works in the torque conversion working condition, and when the vehicle is in the low-speed large-torque demand working condition, the lock-up clutch is controlled to be separated; and when the vehicle is in a high-speed small-torque demand working condition, the lock-up clutch is controlled to be engaged, so that the pump wheel of the hydraulic torque converter is mechanically locked with the turbine, and the vehicle is in a coupler working condition. The power performance and the energy efficiency of the vehicle are improved, the cost of the electric drive system is reduced, and the economical efficiency and the NVH performance are improved.

The utility model provides a thermal runaway flue gas treatment device which is used for effectively treating thermal runaway flue gas so as to solve the problem of potential safety hazards caused by the fact that the thermal runaway flue gas is discharged out of a battery shell. The thermal runaway flue gas treatment device comprises at least one treatment tank body and an ignition unit, a flue gas inlet and a flue gas outlet are formed in the treatment tank body; the treatment tank body is filled with 0.05-0.5 mol / L of aqueous alkali and is used for treating thermal runaway flue gas generated by thermal runaway of the battery; and the ignition unit is used for carrying out ignition treatment on the thermal runaway flue gas treated by the alkali solution. Electrolyte, acid gas and the like in the thermal runaway flue gas are treated by the alkaline solution with the concentration, and then combustible gas in the residual gas is ignited, so that the treated gas does not have flammability and also has harmlessness, and the safety of an energy storage system is improved.

The invention provides an operating mechanism and a load switch, and relates to the technical field of load switches. In the operating mechanism, a main shaft is used for executing switching-on and switching-off through an executing mechanism; the main shaft is provided with a shifting block protruding in the radial direction. The transmission assembly is in transmission connection with the driving device. The clutch structure comprises a clutch piece, a pusher dog and an elastic piece; the pusher dog is rotatably connected to the transmission assembly; the pusher dog is provided with a first end and a second end which are opposite; the pusher dog rotates to the first end along with the transmission assembly to abut against the shifting block so as to drive the spindle to rotate; the elastic piece is connected with the pusher dog and used for providing elastic force for the pusher dog when the first end is away from the main shaft. The clutch piece is used for being fixed to the bearing body and abutting against the second end, so that the pusher dog rotates relative to the transmission assembly to the first end and is lifted up to cross the shifting block. The load switch provided by the invention adopts the operating mechanism. According to the operating mechanism and the load switch provided by the invention, the technical problem that electric control operation is easy to lose efficacy due to manual operation can be improved.

The utility model provides a thermal runaway flue gas treatment device which is used for effectively treating thermal runaway flue gas so as to solve the problem of potential safety hazards caused by the fact that the thermal runaway flue gas is discharged out of a battery shell. The thermal runaway flue gas treatment device comprises at least one treatment tank body, and a flue gas inlet and a flue gas outlet are formed in the treatment tank body; the treatment tank body is filled with 0.05-0.5 mol / L of aqueous alkali and is used for treating thermal runaway flue gas generated by thermal runaway of the battery. The alkaline solution with the concentration not only can fully treat electrolyte carried in the thermal runaway flue gas, but also can treat part of gas in the thermal runaway flue gas, the gas amount of the thermal runaway flue gas treated by the alkaline solution with the concentration is greatly reduced, and the thermal runaway flue gas treatment efficiency is improved. Therefore, the problem of potential safety hazards caused by the fact that thermal runaway smoke is discharged out of the battery shell is solved.

The utility model relates to the technical field of contactors, in particular to a contactor. The contactor comprises a shell provided with a containing cavity, and an auxiliary static contact, a supporting mechanism, an auxiliary movable contact piece and an elastic piece which are arranged in the containing cavity. The supporting mechanism is provided with a stroke space, and the auxiliary moving contact is movably arranged in the stroke space and is provided with a clamping part. The elastic piece is arranged in the stroke space and connected with the clamping portion. And the supporting mechanism drives the auxiliary movable contact piece to move upwards, so that the auxiliary movable contact piece is conducted with the auxiliary static contact, and the continuous conduction stability of the movable contact and the static contact of the contactor is detected. The elastic piece and the auxiliary movable contact piece are matched in a clamping mode so that the auxiliary movable contact piece can move downwards relatively after being stressed and is connected with the elastic piece in a pressing mode, material deformation of the auxiliary movable contact piece can be reduced through movement of the auxiliary movable contact piece, the selection requirements for yield resistance and deformation resistance toughness of materials of the auxiliary movable contact piece are lowered, the service life of the auxiliary movable contact piece is prolonged, and the material selection cost of the auxiliary movable contact piece is reduced.

The invention relates to the technical field of OLED screens, and particularly provides an OLED screen reinforcing method, which comprises the following steps of: placing a reinforcing medium on an identification area on a second leveling fixture part; the first leveling clamp part is placed on the sinking face of the second leveling clamp part, and shaking is avoided through pressing; removing the weak adhesion medium lower protective film, and then aligning and adhering the weak adhesion medium lower protective film to four corners of the leveling fixture part I; the folding screen is placed on the surface of the weak sticky medium, and the surface of the folding screen is flat and free of warping through self-inspection; and finally, applying glue on the surface of the folding screen, standing for more than 4 hours, putting the leveling clamp and the folding screen into an oven together, and taking out after baking is finished. Through the abdicating design and the weak adhesion design of the first leveling clamp part, the back protruding position of the folding screen is avoided, after adsorption, the second leveling clamp part reinforces the back protruding position of the folding screen, the self stress of the folding screen before gluing and the glue curing stress in the gluing process are eliminated, and therefore the problem of product display color difference is solved.

The invention discloses an electronic component data intelligent recommendation method, and belongs to the technical field of electronic components, and the method comprises the steps: S1, obtaining electronic component data, processing the electronic component data, and determining electronic component feature data; s2, optimizing the electronic component data intelligent recommendation model, and determining an optimal electronic component data intelligent recommendation model; s3, predicting and analyzing the user demand data, and intelligently recommending electronic components to the user; and S4, obtaining user evaluation feedback opinions, and continuously optimizing an electronic component data intelligent recommendation result. According to the invention, the problems of complex process, poor user experience, high electronic component selection cost, low electronic component recommendation efficiency and the like in the existing component selection method are solved. The electronic components can be quickly and accurately recommended for the user, the user experience is improved, the model selection cost of the electronic components is reduced, and the recommendation efficiency of the electronic components can be improved.

The invention discloses a single-stage AC-DC converter control method, system, device and equipment and a storage medium, and belongs to the field of electric energy conversion, and the method comprises the steps: simplifying a duty ratio expression according to a whole power factor control strategy, and obtaining a simplified conduction duty ratio; determining a Taylor expansion point according to the simplified conduction duty ratio to obtain theoretical conduction time; timing is started from the switch conduction moment of the current switching period until demagnetization is detected to be finished, counting is carried out, a predicted value of the next switching period is obtained, and a conduction time predicted value of the next switching period is determined based on the theoretical conduction time; and determining the conduction time correction based on output voltage closed-loop control, and superposing the conduction time predicted value of the next switching period and the conduction time correction to obtain the final switching conduction time so as to realize control of the single-stage AC / DC converter. According to the invention, the equivalent switching frequency can be improved, the power density of switching power supply products is improved, the device stress is reduced, and the model selection cost is reduced.

The present invention relates to the field of integrated circuit technology, and discloses a frequency multiplication amplification link capable of switching outputs with different frequency multiplication ratios, which realizes that when a fundamental wave is input, signals with different frequency multiplication ratios can be output through logic switching, thereby improving the bandwidth of the output signal, thereby improving the circuit flexibility and broadening its application scenarios. The present invention comprises at least one level of switchable frequency multiplication / amplifier unit and at least one level of ultra-wideband distributed amplifier, and a level of ultra-wideband distributed amplifier is connected in series after the level of switchable frequency multiplication / amplifier unit; the switchable frequency multiplication / amplifier unit comprises an input matching, a bias circuit, a transistor NM1, an inductor L1, and an adjustable output matching, wherein the input matching is connected to the second end of the transistor NM1, the first end of the bias circuit is connected to the second end of the transistor NM1, the second end of the bias circuit is connected to a high gate voltage VGH or a low gate voltage VGL through the on-off of a logic switch, the third end of the transistor NM1 is connected to a power supply VDD through the inductor L1, and the third end of the transistor NM1 is connected to the adjustable output matching.

The invention belongs to the technical field of chemical preparation, and particularly relates to a device and method for preparing deuterium and a preparation method of an iron-nickel bimetallic catalyst. According to the method for preparing the deuterium, the KOD / MeOD solution is used as the anode electrolyte, the proton exchange membrane, the electrolytic tank and the catalyst are used for directly electrolyzing the deuterated methanol to produce the deuterated formic acid, the deuterated methanol can be directly oxidized into the deuterated formic acid in the mixed solution of the anode electrolytic tank, deuterium gas is separated out on the cathode side, and the deuterated methanol can be directly oxidized into the deuterated formic acid. Selective oxidation of low-carbon molecules is realized to decouple and electrolyze heavy water to prepare deuterium; the deuterium preparation device is designed according to the deuterium preparation method and comprises a power supply, an anode, a cathode, an anode electrolytic tank, a cathode electrolytic tank, a proton exchange membrane and a constant-temperature shell, an iron-nickel bimetallic catalyst NiFe2O4 / NF is selected as the catalyst, the embodiment of the invention provides a preparation method of the catalyst, and the iron-nickel bimetallic catalyst NiFe2O4 / NF has the advantages of high performance and stability.

The invention discloses an air conditioning system test method, system and equipment based on a genetic algorithm and a storage medium, and belongs to the technical field of automobiles, and the method comprises the steps that a thermodynamic model of a condenser is established based on basic parameters of the condenser; calculating the refrigerating capacity of the condenser based on the thermodynamic model of the condenser; establishing a fitness function based on the thermodynamic model of the condenser; optimizing the fitness function of the thermodynamic model of the condenser by using a genetic algorithm to obtain optimized parameters; and an energy-saving optimization control strategy of the air conditioning system is determined according to the optimization parameters. Through a targeted optimization algorithm, the refrigeration performance of the condenser is remarkably improved after implementation, it is ensured that the condenser can reach or exceed the design target in practical application, and therefore the overall energy efficiency ratio of an air conditioning system is improved; and by optimizing the design of the condenser, the energy consumption can be effectively reduced on the premise of ensuring the refrigeration effect, so that the energy expenditure of a user is reduced, and meanwhile, the influence on the environment is also reduced.

The invention relates to the technical field of base material bonding, in particular to a glue type selection method, system and equipment and a medium thereof. The method comprises the following steps: S1, determining a target assembly type corresponding to a glue using demand based on the glue using demand; s2, determining a glue type corresponding to the glue use demand in the target assembly type; s3, determining a requirement corresponding to the target glue in the glue type; and S4, matching the requirements with glue requirements in a database, and determining product information of target glue meeting the glue using requirements. According to the glue type selection method provided by the invention, the glue can be selected quickly and accurately.

The invention discloses a mirror image high-gain Boost converter with switch tubes synchronously switched on and switched off, and belongs to the technical field of power electronic direct current conversion. The converter comprises a direct-current voltage source, two inductors, seven capacitors, seven diodes and two MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) switching tubes. The core innovation lies in that the two switching tubes are completely and synchronously switched on and switched off, no dead time needs to be set, and the control logic is simplified. Through specific connection and multiplexing of a capacitor and an inductor, an efficient voltage-multiplying unit is formed, extremely high voltage gain is achieved, the gain formula is shown in the specification, and D is the duty ratio of a switching tube. According to the structure, high gain is obtained, meanwhile, the voltage stress of the switching tube is remarkably reduced, the value of the voltage stress is only output voltage, and the switching loss is effectively reduced. The device has the advantages of being small in number of devices, compact in structure, high in efficiency, low in cost and the like, and is particularly suitable for occasions where low input voltage needs to be boosted to high direct current bus voltage in the new energy field of photovoltaic systems, energy storage systems and the like.

The invention relates to vehicle testing, and discloses a tire smoothness testing method and a vehicle, and the tire smoothness testing method comprises the following steps: rotating a tire to pass through a simulation obstacle; the dynamic force peak value and the dynamic force attenuation time of the tire are obtained; and judging the smoothness of the tire according to the dynamic force peak value and the dynamic force attenuation time. According to the method, the tolerance capacity of the tire to the road impact is judged through the dynamic force peak value, the attenuation capacity of the tire to the road impact is judged through the dynamic force attenuation time, and the smoothness of the tire can be systematically analyzed from different dimensions, so that the required tire is screened in a more targeted manner, and the use requirement is met.

The invention provides a motor controller, a power system and a vehicle, and relates to the technical field of motors, the motor controller comprises a direct current bus capacitor unit, the direct current bus capacitor unit comprises a first capacitor and a second capacitor which are connected in series, the first capacitor and the second capacitor are adjacent, and at least parts of the first capacitor and the second capacitor are oppositely arranged; the first connecting bar assembly is used for connecting the first capacitor and the second capacitor in series; and the power unit is electrically connected with the first connecting bar assembly. According to the motor controller, the internal stray inductance of the motor controller can be reduced, the working efficiency of the system is improved, and the model selection cost of the bus capacitor and the power module is reduced.

The embodiments of the present invention provide a terminal recommendation method, device, electronic device and storage medium. The terminal recommendation method includes: obtaining user behavior information, base station information and terminal information on sale; generating permanent location information based on the user behavior information; associating the permanent location information with the base station information to determine the target coverage user information; inputting the target coverage user information and the terminal information on sale into a preset terminal prediction model to generate terminal recommendation information; and sending the terminal recommendation information. The user's permanent location is determined through user behavior information, and combined with base station information, users covered by a specific mobile communication network base station are identified; based on the terminal prediction model, the user's terminal preference is predicted and recommended, which significantly reduces the user's selection cost and improves the accuracy of terminal recommendations.

The utility model provides a thermal runaway flue gas treatment device which is used for effectively treating thermal runaway flue gas so as to solve the problem that potential safety hazards exist when the thermal runaway flue gas is discharged out of a battery shell. The thermal runaway flue gas treatment device comprises a first treatment device and a second treatment device, the first treatment device comprises at least one first treatment tank, and a first flue gas inlet and a first flue gas outlet are formed in the first treatment tank; the first treatment tank is filled with an organic solvent and used for treating electrolyte in the thermal runaway flue gas, and the organic solvent is an ester solvent, an alcohol solvent or an aldehyde solvent; the second treatment device is connected with the first treatment device and comprises at least one second treatment tank, and a second flue gas inlet and a second flue gas outlet are formed in the second treatment tank; and the second treatment tank is filled with an adsorption medium and is used for treating the thermal runaway flue gas treated by the first treatment device.