57results about How to "Good for promotion" patented technology

The invention provides a method and device for charging the non-contact charge of hybrid electric vehicles and electric vehicles and a vehicle comprising the device. The charging method provided by the invention comprises the following steps that: an electric energy metering unit on the vehicle meters the electromagnetic energy received by a power receiving coil; a wireless communication unit sends the charge information corresponding to the metered value obtained by the electric energy metering unit to a processing device through a wireless link; and the processing device charges according to the charge information. As the charging function on the charge capacity can be realized by use of a mobile communication system, the popularization is remarkably facilitated, and the investment cost is greatly saved. According to the charging method provided by the invention, the charging on charge can be realized by use of a smart card and a smart card reading / writing unit, and the prepayment mechanism effectively avoids the default of energy charge and gets rid of dependence on an external charging system.

The invention discloses a real person identity verification method. The method comprises the following steps: acquiring human face picture information provided by an operator; simultaneously acquiring the human face characteristic information of the operator and the mouth shape characteristic information of the operator during reading of preset content; and comparing the human face characteristic information with the human face picture information, comparing the mouth shape characteristic information with preset standard mouth shape characteristic information, if comparison succeeds, confirming that the operator is a real person on the human face picture information, and otherwise, confirming that the operator is not the real person on the human face picture information. According to the method, the identity of the real person is judged by simultaneously acquiring the human face characteristic information and the mouth shape characteristic information without making contact with the operator, so that the popularization of the method is facilitated; comparison of the human face characteristic information is adopted, so that confirmation and auditing on whether the operator is the real person or not are facilitated, the identification accuracy is high, and the accuracy is increased; and comparison of the mouth shape characteristic information is adopted, so that others can be prevented from cracking a human face identification comparison technology by using non-real-person objects, and the security is enhanced. On-site pictures can be stored, and a monitoring function is realized.

The invention discloses a biodegradable insect trapping plate and a preparation method thereof. The insect trapping plate comprises the following components in parts by weight: 40-70 parts of PBAT, 10-40 parts of PLA, 10-40 parts of cellulose, 10-20 parts of starch, 1-15 parts of biodegradable color masterbatch / toner and 2-15 parts of an auxiliary agent. The cellulose and the starch are added intothe biodegradable resin, so that the cost of the biodegradable insect trapping plate is greatly reduced, the popularization is facilitated, the application of the cellulose is expanded, and the economic benefits of the cellulose and the starch are improved; in addition, the biodegradable insect trapping plate can be completely degraded by microorganisms in the nature, finally carbon dioxide, water and minerals are generated, and the environment is not polluted.

The invention discloses a syringe, comprising a syringe body and a dosing device, wherein the dosing device comprises a chuck, a T-shaped rod, a transparent outer barrel, a plug, an engaging assemblyand a pressing part. The pressing part comprises a pressing plate and a pressing strip. The engagement assembly includes a first spring and a slider. The T-shaped head of the T-shaped rod is connectedwith the piston rod of the syringe body through a chuck. T-bar outer sleeve transparent cylinder; One end of the transparent outer cylinder is connected with the plug, and a second spring is arrangedin the transparent outer cylinder; One end of the second spring is connected with a T-shaped rod and the other end is connected with a plug. The rod part of the T-shaped rod is provided with a plurality of grooves at equal intervals along the length direction of the T-shaped rod. The other end of the transparent outer cylinder is provided with a through groove; One end of the pressing plate is elastically rotatably connected with the other end of the transparent outer cylinder, the pressing plate is rotatably connected with the pressing strip, and the pressing strip extends into the through groove. The invention has the advantages of flexible structure design, convenient use, accurate quantitative injection, guaranteed medication safety of patients, and greatly reduces the work intensityof medical personnel and patients.

The invention provides a smart memory card and a method for visiting the smart memory card. The smart memory card comprises a flash memory medium, a smart card module, and a controller, wherein the flash memory medium is provided with an application memory space for memorizing smart card application data, and a multimedia memory space for memorizing multimedia data; an application file mapping table is memorized in the smart card module, and correlates an application file name, a base address of the application memory space and status information of the application memory space; and the controller is used for creating the application memory space, establishing the application file mapping table, and memorizing the application file mapping table in the smart card module. The method comprises the steps that a corresponding relation between an application file and the application memory space in the flash memory medium is determined; the application file mapping table is established; and the application memory space is visited according to the application file mapping table. The smart memory card and the method solve the problems that the smart memory card is small in application memory space and cannot bear a large amount of novel application data, a smart card application area is extended into the flash memory medium, and the popularization of a novel application is facilitated.

The invention discloses a Ga2o3 / (Ga1-xFex)2o3 film with room temperature ferromagnetism and high ultraviolet light permeation function and the manufacturing method thereof. The film is provided with room temperature ferromagnetism, a high penetration rate in deep ultraviolet zones and the ability for high energy photons to penetrate. The film can be used in researches on the mutual effect of high energy photon spinning and electron spinning. The manufacturing method for the film is performed as follows: using a c face sapphire as a substrate; conducting cycle deposition for a plurality of times to a Ga2o3 thin layer and a transitional metal Fe thin layer through a laser molecular beam epitaxial technology, and achieving a multi-layer film of Ga2o3 / (Ga1-xFex)2o3 doped with transitional metal elements through the heat diffusion among the layers. The manufacturing method for the multi-layer film enables a Ga2o3 / (Ga1-xFex)2o3 film to be doped by different amounts of Fe by adjusting the times for laser pulse of a Fe deposition layer. The entire process is done in the same cavity so the purity of a sample is guaranteed. Further, since the equipment is commonplace, it can be conveniently promoted for wide use. The Ga2o3 / (Ga1-xFex)2o3 film manufactured by the invention is a diluted magnetic semiconductor material with great prospects for future use.

The invention belongs to the technical field of mobile terminal and discloses a mobile terminal, a temperature reminding time and a temperature reminding device. The method comprises: acquiring the current ambient temperature of the mobile terminal; comparing the current ambient temperature with a first comparative temperature and a second comparative temperature which are stored in the mobile terminal; and according to the result of the comparison, sending corresponding reminding information to a user. In the invention, two comparative temperatures are preset, the current ambient temperature is compared with the two comparative temperatures, corresponding reminding information such as 'overhigh temperature, please keep cool' is sent to the user according to the comparison result, the mobile terminal is more humanized, man-machine interaction is improved and the promotion of the mobile terminal is convenient.

The invention discloses a wireless video conference terminal reaccess system. The system comprises a protection module, a network signal restoring module and a terminal re-join module, wherein the protection module is used for recording relevant information of a conference when a terminal disconnects; the network signal restoring module is used for logging in a video conference network according to the relevant information of the conference and transmitting the information re-joined into the conference to the terminal re-join module, wherein the relevant information of the conference comprises a user name and a password; and the terminal re-join module is used for determining that the terminal passes verification according to the user name and the information re-joined into the conference, and re-joining the terminal into the conference. The invention also discloses a wireless video conference terminal reaccess method. By adopting the system and the method, user experience can be enhanced; and a wireless video conference is propitious to popularize.

The invention discloses a three-level separating biogas slurry drip-irrigation fertilization system, which comprises a biogas slurry chamber, a biogas slurry pretreatment pool and a drip-irrigation device, wherein the inner part of the biogas slurry pretreatment pool adopts a sequentially-reduced three-level step structure, the highest step plane is set as a primary sedimentation area, the middle step plane is set as a secondary sedimentation area, and the lowest step plane is set as a tertiary sedimentation area; the liquid inlet of the biogas slurry pretreatment pool is arranged in the range of the primary sedimentation area, and the liquid outlet of the biogas slurry pretreatment pool is arranged in the range of the tertiary sedimentation area; the biogas slurry chamber is communicated with the liquid inlet of the biogas slurry pretreatment pool through a liquid inlet pipeline; and the drip-irrigation device is communicated with liquid outlet of the biogas slurry pretreatment pool through a liquid outlet pipeline. The three-level separating biogas slurry drip-irrigation fertilization system can effectively filter biogas slurry for a long term with one-time economic investment, reduces the use cost of the biogas slurry, and is beneficial to the popularization of biogas slurry drip-irrigation.

The invention provides a transmitting, sending and receiving method for contents to be presented during call incoming of a called party. The method comprises the following steps of determining a called phone number by a calling party through address book application, and inputting the contents to be presented when the called party is called; executing the step of transmitting the contents to be presented when the calling party calls the called party, wherein the step comprises that the address book application transmits the contents to be presented, a calling phone number and the called phone number to instant communication application of the address book application; sending received contents to the called party through the instant communication application according to a called instant communication identifier corresponding to the called phone number; receiving the contents sent by the calling party by a called mobile terminal through the instant communication application of the called mobile terminal; B2, when the called party receives the call of the calling phone number through the address book application of the called party, presenting the contents to be presented corresponding to the calling phone number on an incoming call interface. According to the transmitting, sending and receiving method, the instant communication which is already used by a user is utilized to avoid the setting of a new server and avoid the registration of new services.

The invention provides a DBP (dibutyl phthalate) residue detection kit. The kit comprises DBP standard substance, envelope antigen, envelope buffer solution, a confining liquid, a washing buffer solution, a competition reaction liquid, a DBP monoclonal antibody, an antibody diluent, a goat anti-mouse IgG labeled by avidin, avidin labeled by peroxidase, an OPD (o-phenylenediamine) substrate color development liquid and a stop solution. The kit is low in cost, high in detection speed and high in sensitivity, the limit of detection is up to 6.25ng / mL, and the kit can be used for field rapid screening for large quantity of samples.

The invention provides a self-adaptive control playing method based on a VR live broadcast system, and relates to the field of VR live broadcast, and the method comprises the steps: collecting live broadcast streams in real time through employing a panoramic camera, combining and splicing the live broadcast streams into a 360-degree panoramic image, and carrying out the compression coding; pushing the encoded panoramic live broadcast stream to a streaming media server in real time for slice storage; enabling a client browser to obtain the VR live broadcast stream from the streaming media server, decoding the VR live broadcast stream, using an open source three-dimensional drawing engine for conducting 360-degree panoramic drawing on the decoded VR live broadcast stream in combination with gravity induction, and changing the position and direction of the virtual camera accordingly according to the change of the position and direction of the user terminal so as to generate and display live broadcast pictures of different view angles; by means of a feedback memory model, achieving the self-adaptive playing effect on different users. According to the invention, the degree of freedom of watching the live video by the user and the fluency of direction switching are greatly improved, the visual field range is expanded, and the user can enjoy immersive experience without wearing VR glasses.

The invention provides a power adapter with multiple charging modes. The power adapter comprises a solar power generation module, a piezoelectric power generation module, a mains supply charging module, an integrated circuit and an electric energy output module, wherein the solar power generation module, the piezoelectric power generation module and the mains supply charging module are connected with the integrated circuit separately; the integrated circuit is connected with the electric energy output module; and the electric energy output module is connected with and arranged on a USB interface (1) formed in the power adapter shell. The invention provides the power adapter combining the three kinds of power supply modes: piezoelectric power generation, solar power generation and direct charging; an effect of charging other equipment under different conditions can be realized; emergency problems can be solved when a power supply is not available; and the energy resource is green and environment friendly without causing any forms of pollution to the environment, so that the power adapter is wide in application range, capable of being widely popularized, small in volume and convenient to carry.

The invention relates to a new energy vehicle technology, in particular to a charging control device for charging an electric vehicle and an electric vehicle charging station including same. The charging control device provided according to one aspect of the invention comprises a first interface, a second interface, a guiding and converting unit and a control unit, wherein the first interface is suitable for being connected with an output port of a charging pile; the second interface is suitable for being connected with a charging interface of a vehicle-mounted charger; the guiding and converting unit is suitable for being coupled with the charging pile and the vehicle control device; and the control unit is coupled with the guiding and converting unit and a charging dispatching device andis configured to control a connection state between the first interface and the second interface and control the charging capacity of the charging pile to the vehicle-mounted charger by using the guiding and converting unit according to a dispatching command of the charging dispatching device.

The invention relates to a low-voltage ship DC power grid structure based on energy weak storage, and a control method. A DC power grid structure of a DC circuit breaker with the rapid turn-off capability is replaced by a common circuit breaker. The structure is mainly characterized in that a high-capacity capacitor with a voltage supporting effect is cancelled from a DC link, and a DC power gridis in an energy weak storage state, and can achieve the power loss protection rapidly when a fault occurs. The power grid structure is that the controllable rectification is carried out through a front-end converter with the DC short-circuit fault ride-through capacity, and the voltage fluctuation of a DC power grid is restrained through an interface converter with the high switching frequency ofa supercapacitor. By the adoption of the power grid structure, the structure can achieve the automatic current limiting when a DC side short-circuit fault occurs, does not need a special DC circuit breaker, thereby simplifying a circuit, and facilitating the popularization of the ship DC power grid.

The invention belongs to the technical field of in-vitro immune detection, and particularly relates to a reagent kit for detecting the concentration of Lp-PLA2 and a preparing method of the reagent kit. The reagent kit comprises a platform carrier covered by an Lp-PLA2-resitant specific antibody, an Lp-PLA2 concentration gradient standard product, an Lp-PLA2 quality control product, a horse radish peroxidase labeled Lp-PLA2-resitant antibody, a sample buffer solution, a substrate A, a substrate B, a stop solution and a washing solution. The used detection instruments are simple, and are respectively common use instruments in a laboratory, so that the detection cost is lower, and the popularization is favorably realized. In addition, the operation of the reagent kit is simple, and the goal can be achieved by an ordinary laboratory technicist; meanwhile, the high- specificity and high-affinity Lp-PLA2-resitant specific antibody, the standard product diluent added with unique protein stabilizing agents and a sample buffer solution recipe are adopted in the reagent kit, so that the reliability and the accuracy of the detection results and the stability of the reagent kit are greatly improved.

The invention discloses intelligent power-consumption conversion equipment and an intelligent power-consumption communication system. The intelligent power-consumption conversion equipment comprises a power-consumption monitor arranged on a power supply circuit of power-consumption equipment; and the power-consumption monitor acquires power-consumption / power-supply data of the power-consumption equipment connected with the power-consumption monitor. According to the scheme disclosed by the invention, the power-consumption equipment does not need to be replaced and purchased; and since the power-consumption monitor is arranged on the power supply circuit of the power-consumption equipment, by the power-consumption monitor, the acquisition of the power-consumption / power-supply data can be realized, and the conversion from the traditional power consumption to the intelligent power consumption is realized so as to be beneficial to popularization of intelligent power consumption.

The invention discloses a method and device for commodity sales management through a game store APP. The method includes the following steps: enter the game store APP, and when the user is interested, log in or enter the game store APP; click the sales button on the main interface Jump to the sales interface; the products displayed on the sales interface include software virtual products and physical products; the relevant effects and introduction information of the products are displayed on the sales interface, and the user clicks on the product he wants to buy on the sales interface and jumps to the page he wants to buy. The physical mall where the commodity is located; the user purchases the desired commodity in the purchase interface of the physical mall, and after the purchase is completed, the game store APP gives a certain share to the user and the physical mall. The implementation of the present invention has the following beneficial effects: it is pertinent to users, it is beneficial to the promotion of commodities, and it enables users to purchase the physical commodities they really need in the game according to the objective evaluations of other users.

The invention provides a processing method of a vacuum freeze-dried melon and fruit solid beverage. The processing method of the vacuum freeze-dried melon and fruit solid beverage comprises the following steps of selecting refrigerated melons and fruits; washing raw-material melons and fruits, and carrying out washing by using a disinfectant for melons, fruits and vegetables so as to obtain washedmelons and fruits; carrying out peeling, dicing and kernel-removing so as to obtain diced flesh; washing the diced flesh so as to obtain flesh dices; beating or squeezing the flesh dices so as to obtain pulp, and diluting the pulp by using purified water so as to obtain fresh melon and fruit juice; performing vacuum freeze-drying on the fresh melon and fruit juice so as to obtain a semi-finishedproduct to be packaged; and carrying out inflated bagging so as to obtain the vacuum freeze-dried melon and fruit solid beverage. According to the processing method, water of fresh melon and fruit juice is removed by adopting vacuum freeze-drying, so that, the prepared melon and fruit solid beverage perfectly preserves flesh tissue and fiber of melons and fruits so as to effectively prevent nutrients of the melons and the fruits from being damaged; moreover, the vacuum freeze-dried melon and fruit solid beverage is convenient to eat, carry and transport, so that, promotion is facilitated. In addition, juice produced by dissolving the vacuum freeze-dried melon and fruit solid beverage with water has undifferentiated color, luster, appearance and taste compared with fresh juice.

The invention relates to a cassava biogas residue sprout cultivation substrate and production technology thereof, wherein the sprout cultivation substrate is prepared after the cassava biogas residue is subjected to residual ethane removal and acid regulation; the production technology comprises the following steps: a. dehydrating: dehydrating the cassava biogas residue by a filter press to obtain biogas residue with water content of 50-60 percent; b. detoxifying: spraying a soil cleaner containing ferric trichloride into the biogas residue, and removing residual methane in the biogas residue; c. stirring: stirring the biogas residue is uniformly ; d. sealing and acid regulating: sealing the biogas residue which is uniformly stirred for 1-2 days, and during the period, and spraying the soil cleaner containing ferric trichlorid to conduct acid regulation, thus regulating the biogas residue approaching to alkalinity to approach to acidity; and e. spreading: spreading the biogas residue approaching to acidity after sealing, and leading water content to be less than or equal to 50 percent, thus obtaining the product packing. The cassava biogas residue sprout cultivation substrate and the production technology of the cassava biogas residue sprout cultivation substrate solve the problem of waste recovery of cassava biogas residue, and change waste into wealth; and the production technology of the cassava biogas residue sprout cultivation substrate causes the cassava biogas residue to meet the requirement of sprout cultivation substrate.

The invention discloses a pharmaceutic preparation of promotion of lactation for a puerperal. The pharmaceutic preparation is characterized in that raw materials for preparing the active ingredients of the preparation compriseangelica sinensis, semen sesami nigrum, colla corii asini, ginseng, astragalus mongholicus, tetrapanax papyriferus, corn stigma, uniflower swisscentaury root, trichosanthes kirilowii maxim, leonurus, dandelion, radix ophiopogonis and liquorice. According to the theory of traditional Chinese medicine and pharmacy, the qi and blood of a puerperal puerpera upwards move to generate the milk after the parturition, and the milk is the metaplasia of blood; qi runs, thus the puerperal puerpera is insufficient in milk due to weak qi and blood, and blocked channels of breast. According to the pharmaceutic preparation disclosed by the invention, various medicines are combined, so that source is provided for the milk, and the effects on replenishing qi, nourishing blood, promoting blood circulation to remove meridian obstruction, tonifying spleen and invigorating stomach, freeing channels of breast, alleviating water retention and promoting lactation, tonifying spleen and promoting lactation, and regulating the blood condition and producing milk.

The invention discloses a health protection polyester fiber and a production process thereof. The health protection polyester fiber comprises a polyester component and a health protection component, wherein the polyester component accounts for 60-70 mass percent; the health protection component accounts for 30-40 mass percent; the polyester component is formed by condensation polymerization between an organic dibasic acid and dihydric alcohol; the organic dibasic acid accounts for 40-50 mass percent; the dihydric alcohol accounts for 50-60 mass percent; the health protection component is formed by mixing bamboo charcoal masterbatch with coffee carbon particles; the bamboo charcoal masterbatch accounts for 70-80 mass percent; and the coffee carbon particles account for 20-30 mass percent. According to the mode, the polyester fibers with health protection effects can be conveniently and rapidly prepared, and popularization of the polyester fibers is promoted.

The present invention belongs to the technical field of food processing and provides a specific flour for potato dough skin and dumpling wrappers to make potatoes as a staple food and solves the problems that the existing potato full flour has higher processing costs and more complex processing steps, the staple food products manufactured by the existing potato flour are difficult to mold, have high hardness, are not able to endure boiling, have low content of potato full flour and higher costs to make potato pasta. The preparation method of potato full flour comprises the following steps: selecting materials, cleaning and peeling, picking, slicing, blanching, cooling and oven-drying, milling, and mixing potato full flour and potato starch to make dough skin and dumpling wrappers. The manufacturing processes are time-saving, simple and convenient, the products are suitable for mass consumption and beneficial for promoting, the industrialized production of potato flour can be realized, and the products have stable quality; the specific flour for potato dough skin and dumpling wrappers is easy to mold, have good tenacity, full nutrition and good mouthfeel. All raw materials are from potatoes, do not add any food additive, can ensure food to be safe, healthy and green, and promote the consumption of the potatoes as a staple food. The specific flour for potato dough skin and dumpling wrappers to make potatoes as a staple food promotes China's sustainable development of agriculture and benefits people's nutrition and health.

The invention discloses a digitalized real game steamboat system in a network environment. The system comprises a ground control center, a plurality of game steamboats, a sensor, an isolated output, a motor and a fort for game steamboat and an embedded CPLD chip in the game steamboat; wherein, serial communication is adopted between the CPLD chip and network ports to transform the current state of the motor into serial data on one hand and on the other hand, to transform the received control instructions from the ground control center into multi-channel control signals of the serial data, which is then analyzed into executable instructions; a control module for driving motor controls a turret and the motor; the sensor is arranged on the game steamboats. Compared with the prior art, the digital technology is combined with traditional real games in the system so that operational interaction that the traditional real games do not have is achieved; combining online games with the traditional real games on one hand greatly improves the interest of the traditional real games and on the other hand avoids 'addiction to network' problems easily brought by the online games.

The invention provides an on-line storage battery capacity testing system and method in a high-voltage direct current and mains supply direct supply mode, and relates to the technical field of storagebattery capacity test technologies. The system comprises: a storage battery pack powered by a high-voltage direct current power supply system; a rectifier which is used for providing charging voltagefor the storage battery; a rectifier control unit which is used for controlling the rectifier module to adjust the output voltage; a data acquisition and monitoring unit which is used for monitoringthe state of the storage battery in real time and acquiring data information of the storage battery pack during a discharge test; and a data analysis and processing unit which is used for processing and analyzing the data information of the storage battery acquired by the data acquisition and monitoring unit. According to the invention, the problem of an online storage battery capacity test in a high-voltage direct current and commercial power direct supply mode is solved: a storage battery online discharge test is adopted in a data center high-voltage direct current and commercial power direct supply mode, the defects of an offline test in a traditional storage battery capacity test are avoided, and the operation safety and convenience are improved.

The invention discloses a face brush. The face brush comprises a face brush body, wherein the face brush body comprises a vibration motor, a vibration block and a brush head assembly; the brush head assembly comprises a first circular disc which is fixedly arranged on the face brush body; a slide rail is arranged on the first circular disc; a slide block is arranged on the slide rail; a guide column is arranged at the upper end of the slide block; the face brush further comprises a second circular disc which is rotatably arranged; the second circular disc comprises an arc-shaped groove; the guide column penetrates through the arc-shaped groove; the face brush further comprises an elastic bristle planting part and bristles; the bristles are arranged on the bristle planting part; a mounting block is arranged at the upper end of the guide column; the bristle planting part is arranged on the mounting block; the second circular disc is provided with a lifting lever; a groove for the lifting lever to rotate is formed in the position, relative to the lifting lever, of the face brush body; the lifting lever stretches out of the groove; the vibration block ejects against the bristle planting part. The face brush can be used for controlling an acting area on a face of the bristles of the brush head by rotating the circular discs, and the brush heads with different sizes do not need to be replaced. Furthermore, the structure is simpler and easy to popularize, and the market prospect is wide.

The invention relates to a method for cultivating edible chrysanthemum. According to the method for cultivating edible chrysanthemum, a new species formed by hybridizing large September chrysanthemumand medium-sized September chrysanthemum is selected, field cultivation of the chrysanthemum of the new species can be realized, and the taste is slightly sweet. The soil is improved by using environmental-friendly enzymes so as to be loosened, and illumination of the chrysanthemum is shortened by a method for covering by a black plastic film, so that the chrysanthemum blooming season is changed.According to the method for cultivating edible chrysanthemum provided by the invention, the edible chrysanthemum is planted by the method, the high-yield and high-quality chrysanthemum can be obtained, and the standard of the edible chrysanthemum is met. Moreover, the produced chrysanthemum is enriched in selenium, can provide selenium supplement for the human body and is high in commodity value and beneficial to popularization. The chrysanthemum can be picked to be added into medicines or tea, and can achieve effects of preventing liver cancer and liver cirrhosis, increasing the toughness ofblood vessels throughout the body and preventing cerebral hemorrhage, thrombus and thrombotic diseases.

The invention relates to an electric vehicle charging control center, a universal electric vehicle charging station with stacked voltage-stabilized power sources, and a charging control method of the universal electric vehicle charging station. The electric vehicle charging control center is used for receiving information and being matched with a charging network connected with the electric vehicle charging control center according to information. A charging system comprises a charging network and a control center. The charging network comprises a universal charger connected with a battery pack and a plurality of voltage-stabilized power source modules connected with the universal charger. The control center is connected with the battery pack, the universal charger and the voltage-stabilized power source modules and used for receiving information of the battery pack and correspondingly adjusting output of the universal charger and the number of the voltage-stabilized power source modules connected with the universal charger in series. Electric vehicles of different specifications can be charged during charging, the problem that electric vehicles are difficult to charge is solved, and popularization of the electric vehicles is facilitated.

The invention discloses an isopycnic cotton preparation method and isopycnic cotton. The isopycnic cotton preparation method comprises the following steps of a cotton making step, wherein raw materials are subjected to opening through an opening device and subjected to carding through a carding machine, then enter a tiling machine for tiling, enter a drying box for dying after being cut, and thenare discharged through a discharge hole of the drying box to form cotton; a blank making step, wherein, the cotton is preheated by means of a preheating mold to form a blank, the preheating mold comprises a preheating upper mold body and a preheating lower mold body, in the blank making step, the cotton is put on the preheating lower mold body of the preheating mold, the cotton is supplemented with leftover materials, and the cotton is preheated through preheating mold clamping; a finalizing step, wherein the blank is cooled and finalized, and the isopycnic cotton is obtained. According to theisopycnic cotton preparation method, the method is simple and convenient, and the density of the obtained isopycnic cotton can be consistent.