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1248results about How to "Realize charging" patented technology

Photovoltaic battery- DC / DC voltage boosting convert charging method

The invention relates to a photovoltaic cell -DC / DC boost conversion charge method which belongs to battery technique field. The method includes: 1) a portable equipment accumulator voltage is detected by a voltage sensor, when lows to full charge capacity, the voltage sensor makes DC / DC boost converter starting DC / DC conversion, and electricity quantity flows from photovoltaic current to lithium battery for charging; 2) when the portable equipment accumulator is in full charge capacity state, accumulator need not charge again, the voltage sensor makes DC / DC boost converter forbidding DC / DC conversion, thereby, the portable equipment accumulator is protected and over charge phenomena is prevented. The method can be realized simply, and has short reaction time, high efficiency, overvoltage protection and anti-counterblast protection.
Owner:BEIJING HI TECH WEALTH INVESTMENT DEV

Automatic vehicle-mounted mobile power charging and exchanging station for electric vehicle and method for quickly exchanging battery

The invention discloses an automatic vehicle-mounted mobile power charging and exchanging station for an electric vehicle and a method for quickly exchanging a battery. The automatic vehicle-mounted mobile power charging and exchanging station comprises a tractor, a semitrailer and a battery box storage rack, a battery box, an automatic power exchanging device, a charging system, an electric quantity counting system, an automatic control unit and the like which are arranged on the semitrailer, wherein the storage rack can store a plurality of battery boxes three-dimensionally; the battery boxes are standard exchanging modules connected with a battery house on the lower part of a vehicle body by using a plurality of quick-opening locking bolts; the automatic power exchanging device comprises a lifting table, a transmigration machine, a shifting machine and a plurality of unlocking / locking bushings; the automatic power exchanging device can automatically transport and store the battery boxes, and lock or unlock the battery boxes and the battery house due to mutual matching of the lifting table, the unlocking / locking bushings and the quick-opening locking bolts, so automatic dismantling and exchange of the battery boxes can be realized; and the charging system is used for automatically charging the battery boxes. The station is complete in system, compact in structure, flexible in maneuvering, low in investment and short in construction period, so the automatic power charging / exchanging requirement of the battery of the electric vehicle can be met.
Owner:柳崇禧 +1

Robot automatic charging device and robot automatic charging method

The invention discloses a robot automatic charging device and a robot automatic charging method. The robot automatic charging device comprises a power supply connecting module, a moving module, a battery monitoring module, an external image acquisition module, a storage module and a master control module, wherein after receiving a charging request signal, the master control module controls the external image acquisition module to acquire images in the ambient environment of the robot, searches images matched with reference images of an external power supply socket from the acquired images and judges whether the external power supply socket exists or not, if yes, the position of the power supply connecting module relative to the external power supply socket is calculated, and the moving module is controlled to drive a robot to move toward the external power supply socket so as to enable the power supply connecting module and the external power supply socket to be aligned and connected with each other. According to the invention, the robot can complete charging automatically without manual intervention when the electricity quantity of a charging battery is not enough. The robot automatic charging device is suitable for any existing alternating-current power supply socket.
Owner:SHANGHAI NEW CENTURY ROBOT

Power transmitting device, power receiving device, authentication/billing proxy device, electrical charging system, power transmitting method, power receiving method and electrical charging method

To realize charging while in non-contact processing operation for the purpose other than charging. An approach of a portable electronic device 2 with a rapid bulk electricity storing module 20, which is a chargeable power source, is detected at the side of a power transmitting device 1, and power transmission for charging the rapid bulk electricity storing module 20 is executed in response to the detection of the approach. A power source can be charged in operation for non-contact authentication which is executed when a device approaches an authentication device.
Owner:NTT DOCOMO INC

Mobile charging method, device and system for vehicle

The invention discloses a mobile charging method, device, and system for vehicle. The mobile charging method includes: acquiring electric quantity information, positioning information and driving information of a vehicle to be charged; sending charging request information carrying the electric quantity information, the positioning information and the driving information to a server so as to allow the server to determine a power supply vehicle and meet path information for the vehicle to be charged according to the electric quantity information, the positioning information and the driving information, wherein the meet path information is used for allow meeting between the power supply vehicle and the vehicle to be charged; and allowing the vehicle to be charged to receive electric energy from the power supply vehicle according to a preset charging manner while the power supply vehicle meets the vehicle to be charged according to the meet path information. The vehicle to be charged can be charged during a traveling process, the endurance problem is overcome, and a designated form route does not have to be changed.
Owner:BYD CO LTD

Dust-collecting charge device and dust-collecting charge method of floor-sweeping robot

The invention provides a dust-collecting charge device and a dust-collecting charge method of a floor-sweeping robot. The floor-sweeping robot is provided with a floor-sweeping robot body, wherein oneside of the floor-sweeping robot body is provided with a dust box, the bottom of the dust box is provided with a dust box discharging port, the dust box discharging port corresponds to a maintenancestation dust-collecting port and can be pressed on the outside of the maintenance station dust-collecting port, and further communication between the maintenance station dust-collecting port and the dust box discharging port is achieved. The dust-collecting charge device and the dust-collecting charge method haves the advantages that charging and dust removal maintenance work of the floor-sweepingrobot are achieved simultaneously, and the floor-sweeping robot is diversified in function; when the maintenance work of dust removal is conducted on the floor-sweeping robot at a maintenance station, and a vacuum mode is adopted to suck dust and other waste in the dust box of the floor-sweeping robot into a dust bag of the maintenance station. Therefore, the dust box does not need to be taken out of the floor-sweeping robot for cleaning, and the dust-collecting charge device has the advantages of being convenient to clean and having no pollution to the outside environment.
Owner:BEIJING XIANGJIE SCI & TECH LTD

Charging pile management method based on two-dimensional code

The invention belongs to the technical field of charging piles, and especially relates to a charging pile management method based on two-dimensional codes. The method comprises: a charging pile making data information which includes a charging pile ID, a near-field communication module ID, and a charging pile network state form a two-dimensional code, and displaying the two-dimensional code on the screen of the charging pile; a mobile terminal scanning the two-dimensional code through an application APP, to obtain the data information which includes a charging pile ID, a near-field communication module ID, and a charging pile network state; the application APP determining to use which communication method according to the network state of the mobile terminal and the network state of the charging pile; if the mobile terminal and the charging pile are online, using a normal remote communication method; if anyone is offline, the application APP prompting to use a near-field communication method, and sending a charging request instruction to the charging pile through a near-field communication module, and after the corresponding near-field communication module in the charging pile receives the charging instruction, the charging pile starting to charge. The method solves charging problems when the charging pile and the mobile terminal are in an offline state.
Owner:深圳智链物联科技有限公司

Orderly charging control method, controller and system

The invention discloses an orderly charging control method, controller and system. The orderly charging control method is suitable for direct-current charging piles and includes: and includes: acquiring real-time load of a station transformer, real-time charging demanded power of vehicles and real-time running condition of the charging piles; on the premise that the load of the station transformerdoes not exceed a limit, formulating an orderly charging strategy, and issuing the same to the charging piles, wherein the orderly charging strategy includes: charging the vehicles according to preset priority and preset output power of the charging piles if total charging demanded power of the vehicles does not exceed current residual power of the station transformer; when the total charging demanded power exceeds the current residual power, the charging piles with higher priority work at full power in a prioritized manner, and the charging piles with lower priority charge through power smooth adjusting. By the method, orderly charging of electromobiles is realized, and matching between charging load of the electromobiles and power supply capacity of a power distribution network is realized through orderly charging control by utilizing the characteristic of energy-type load of the electromobiles, so that power supply of the electromobiles and running safety of the power distributionnetwork are ensured.
Owner:SHANDONG LUNENG SOFTWARE TECH

Method for energy-saving charging and discharging of cells and system for testing energy-saving charging and discharging of cells

The invention relates to the technical field of an energy-saving charging and discharging test on cells, and specially, relates to a method for energy-saving charging and discharging of cells and a system for testing energy-saving charging and discharging of cells. When all cells are in a charging state, power is sent from an electrical network and orderly passes through a direct current-alternating current transformation unit, a direct current-direct current transformation unit and the cells. When all the cells are in a discharging state, power is sent from the cells and orderly passes through the direct current-direct current transformation unit, the direct current-alternating current transformation unit and the electrical network. When cell charging powder and cell discharging powder are unequal, the powder unbalance is adjusted by the direct current-alternating current transformation unit and the electrical network. In the invention, charging and discharging of cells are realized simultaneously. Powder produced by cell discharging is fed back to an electrical network so that powder cyclic utilization is realized and powder-saving effects are obtained. A part of the cells are in a charging state and the other part of the cells are in a discharging state so that powder can be transmitted between the two parts without passing through the electrical network and thus powder cyclic utilization efficiency is improved; powder consumption is reduced; charging-discharging integration is realized; and operation processes are simple and efficient.
Owner:DONGGUAN GUANJIA ELECTRONICS EQUIP

Charge controller of wind turbine generator and control method thereof

InactiveCN101702532APrevent draggingTo achieve maximum utilizationBatteries circuit arrangementsElectric powerCharge controllerMicro computer
The invention discloses a charge controller of a wind turbine generator and a control method thereof, and the charge controller comprises a rectifier circuit connected with the output of the wind turbine generator and is characterized in that the output end of the rectifier circuit is connected with a battery pack through a switch K1, an unloading loop and a BOOST circuit, and the unloading loop and the BOOST circuit are further connected with a control circuit. The rotational speed of a wind turbine is determined by detecting the frequency of the output voltage of the wind turbine generator, thereby rapidly and effectively protecting the wind turbine generator. The charge controller is provided with the BOOST circuit with the novel control mode, and the start and the stop of the BOOST circuit are controlled according to the detected rotational speed value of the wind turbine generator, thereby realizing the effective charge under the low wind speed condition and preventing the wind turbine generator from dragging and stopping. The maximum utilization of wind speed can be realized by the mutual coordination of the BOOST circuit and the unloading circuit. The limited-voltage and limited-current charge of batteries can be realized and the service life of the batteries can be prolonged through the intelligent control of a single chip micro-computer.
Owner:GLORYMV ELECTRONICS

Self-adjusting wireless charging system and method for electric automobile

ActiveCN104539033AImprove reliabilityAvoid problems such as wear and tear, and the service life of the connector equipment is reducedBatteries circuit arrangementsElectromagnetic wave systemControl mannerEngineering
The invention relates to a self-adjusting wireless charging system and method for an electric automobile and belongs to the technical field of electric automobile charging. Compared with a wired charging system, the operability of the wireless charging system is simpler. When the distance between a transmitting coil and a receiving coil is within the range of 50 cm, high-efficiency power transmission can be achieved. A variable current load tracking charging mode is further contained, charging can be performed according to the optimal charging current curve, so the service life of a battery is prolonged. Wireless charging is independent of automobile model numbers and the size and the shape of an energy receiving unit, so the electric automobile can charge the battery without depending on external connection equipment. In addition, according to the self-adjusting wireless charging system and method, a wireless power generation device and a wireless power receiving device can be in real-time communication, and the output power of the wireless power generation device can be adjusted according to the state of the battery, so the control mode of load tracking is achieved; the self-adjusting wireless charging system and method enable charging equipment to be higher in reliability and longer in service life, can meet the requirement for electric automobile charging of clients and is high in charging efficiency and practicality.
Owner:NORTHEASTERN UNIV

Charging pile device for pure electric vehicle

The invention discloses a charging pile device for a pure electric vehicle. The charging pile device comprises a charging pile body and a charging end socket connected with the electric vehicle, wherein an empty hole of which the open end faces right is arranged in the charging pile body; inserting slots which extend between left and right and are vertically corresponded and a first sliding and pushing slot positioned between the two inserting slots are arranged in the left end wall of the empty hole; a second sliding and pushing slot which penetrates through the inserting slots and the first sliding and pushing slot are arranged in the charging pile body; a pushing slot is also arranged between the first sliding and pushing slot and the inserting slots; a sliding and pushing block is installed in the first sliding and pushing slot in a leftward and rightward moving way; the left end of the sliding and pushing block is provided with a through slot which is vertically penetrated; the left end surface of the sliding and pushing block is vertically correspondingly provided with a first oblique head; a pushing arm is movably installed in the pushing slot; the end surface, which is far away from the first sliding and pushing slot, of the pushing arm is fixedly provided with a contact piece electrically connected with a mains supply; the end surface, which faces the first sliding and pushing slot, of the pushing arm is provided with a first inclined pushing surface cooperated with the first oblique head; a vertically corresponding sliding and pushing arm is movably installed in the second sliding and pushing slot.
Owner:ZONECHARGE (SHENZHEN) WIRELESS POWER TECH CO LTD

Wireless charging apparatus with bidirectional energy flowing function

The invention discloses a wireless charging apparatus with a bidirectional energy flowing function. The wireless charging apparatus comprises an input side controllable rectifying link which consists of an inductor L and power switching tubes Q1-Q4, a Z source converter which consists of inductors L1 and L2 and capacitors C1 and C2, a single-phase H-bridge inverter which consists of power switching tubes Q5-Q8, a wireless electric energy transmission mechanism which consists of a transmitting-receiving coil and a compensation network, and a vehicle-mounted controllable rectifying link which consists of power switching tubes Q9-Q12, wherein Q9-Q12 are connected with the capacitors C and the battery in parallel; and the compensation network comprises a primary side LCC compensating network which consists of a primary side compensating inductor Lp and two primary side compensating capacitors Cp and a secondary side LCC compensating network which consists of a secondary side compensating inductor Ls and two secondary side compensating capacitors Cs. The wireless charging apparatus has the functions of power factor correction and bidirectional energy flowing at the same time, and has high transmission efficiency.
Owner:刘庆

Arc discharge type double-screw bolt welding gun

The invention discloses a drawn-arc type stud welding gun, which comprises a fixed component and a movable component. A stud receiver component and a cylinder piston component are arranged at the middle part of the movable component; the stud receiver component is mounted at the front end of the cylinder piston component, and an arc-shaped screw transporting slide is formed therein; a conducting clamping head of the receiver component is mounted in front of the stud receiver component, the penetrating inner hole thereof is communicated with a screw outlet port of the arc-shaped screw transporting slide and a screw inlet port of the arc-shaped screw transporting slide of the receiver component is communicated with the outside of the welding gun; and a piston rod of the cylinder piston component is coaxial with the inner hole of the conducting clamping head; and when the piston of the cylinder piston component moves forward, the piston rod thereof enters the inner hole of the conducting clamping head through the arc-shaped screw transporting slide of the stud receiver component, and the air passage of the cylinder piston component is communicated with the outside of the welding gun. The drawn-arc type stud welding gun can realize the automatic feeding and loading of the stud welding screws after the automatic feeding device is connected with the stud welding power source, thereby greatly improving the welding speed of the stud welding screws and reducing the labor intensity of workers at the same time.
Owner:SHENZHEN HONGBAI TECH IND

Electric automobile charging method and device

The invention relates to the technical field of electric automobiles, and discloses an electric automobile charging method and a device. The method comprises the steps that a charging pile obtains theidentification information of a vehicle-mounted terminal; the charging pile sends a charging request to a charging pile server, and the charging request comprises the identification information of the vehicle-mounted terminal; the charging pile server sends a charging verification request to a cloud server, and the charging verification request comprises the identification information of the vehicle-mounted terminal; the cloud server judges whether a user label corresponding to the identification information of the vehicle-mounted terminal is contained in the preset user label library or not;if the user label corresponding to the identification information of the vehicle-mounted terminal is contained in the preset user label library, the cloud server sends a first charging instruction tothe charging pile server; and the charging pile server sends a second charging instruction to the charging pile, so that the charging pile can carry out charging operation on the vehicle-mounted terminal. According to the technical scheme provided by the electric automobile charging method and the device, the operation steps of charging of an electric automobile can be simplified, the automatic charging without using mobile phones and charging cards is achieved, so that the electricity utilization safety is ensured during using the charging pile, and the service life of the electric automobile is prolonged.
Owner:ZHEJIANG GEELY HLDG GRP CO LTD +1

Parking and battery charging accounting management method and system for electric cars

The invention discloses a parking and battery charging accounting management method and system for electric cars. The system comprises a park exit and entrance gate brake switch control unit, an automatic charging management machine, a stall indication screen, electric car charging posts, parking and battery charging cards, stall detectors, a central controller and a back-stage management server. The park exit and entrance gate brake switch control unit, the automatic charging management machine, the stall indication screen and the central controller are connected with the back-stage management server for communication through optical fibers and the like. The electric car charging posts and the stall detectors are connected with the central controller for communication through optical fibers and the like. According to the parking and battery charging accounting management method and system, managing and battery charging of the electric cars can be effectively achieved, unmanned payment can be achieved, transparent and real-time information can be achieved, the payment time can be shortened, labor and financial resources can be saved, the operation complexity can be lowered, and finally intelligent parking and battery charging of a park can be achieved. In addition, the scheme is simple, the cost is low, maintenance is convenient, and therefore the parking and battery charging accounting management method and system are suitable for application and popularization.
Owner:GUANGZHOU GOALAND ENERGY CONSERVATION TECH

Charging/ heating control method for electric car power battery

The invention relates to a charging / heating control method for an electric car power battery, relates to the technical field of lithium-ion power battery heating and charging, and solves the problemsthat preheating needs to be carried out when the lithium-ion power battery is used under a low temperature environment but an existing external heating device is uneven in temperature distribution soas to be likely to damage the battery. By use of the method, when the surface temperature of the lithium-ion power battery is lower than a set temperature and the SOC (State Of Charge) of the batteryis lower than a preset value, a power supply charges a super capacitor, and the super capacitor carries out alternating frequency charging and discharging on the lithium-ion power battery through bidirectional DC (Direct Current) / DC. Otherwise, the lithium-ion power battery provides self-heating energy, the alternating frequency charging and discharging is carried out on the super capacitor through the bidirectional DC / DC, and the alternating frequency excitation heating of the lithium-ion power battery is realized. When the temperature of the lithium-ion power battery is greater than a set temperature and the lithium-ion power battery is not fully charged, the lithium-ion power battery is charged until the electric quantity of the lithium-ion power battery is full. The method is suitablefor heating and charging the power battery.
Owner:HARBIN UNIV OF SCI & TECH

PLC communication-based intelligent electric automobile charging device

The present invention provides a PLC communication-based intelligent electric automobile charging device, which comprises a charging post, an electric automobile, a controller, a PLC power carrier module, a control master CPU module, a sampling module, a man-machine module, a guiding control module, a charging plug and a charging socket of a charging connector, and the like. The charging plug is connected with the charging post. The charging socket is connected with the electric automobile through a cable. According to the technical scheme of the invention, based on the transmission communication between a control strategy and data messages, the charging post, matched with the electric automobile, can be automatically searched and found out. The interior data information of the charging device is modulated through a PLC power carrier board to be transmitted through a power line. The information transmission of charging data is realized in the power carrier communication mode, so that the re-wiring operation is not required. Therefore, the capital investment is reduced. Meanwhile, the device is simple to install and flexible to set.
Owner:STATE GRID CORP OF CHINA +2

Unmanned ship system used for inland river environmental monitoring

The invention relates to an unmanned ship system used for inland river environmental monitoring. The unmanned ship system comprises an unmanned ship module, an intelligent wharf module and an upper computer. The unmanned ship module is arranged on the unmanned ship and intercommunicates with the upper computer through the intelligent wharf module. The intelligent wharf module is arranged on the stop wharf of the unmanned ship. The unmanned ship module autonomously completes specified path obstacle avoidance cruising and water quality detection and returns to the wharf according to the path andthe water quality detection task set in the upper computer and autonomously uploads the working state information to the intelligent wharf module. The intelligent wharf module performs autonomous charging and fault inspection of the returned unmanned ship module, and the upper computer inquires the current working state information of the unmanned ship in the intelligent wharf module in real time. Compared with the systems in the prior art, the water quality information of the target waters can be effectively and rapidly acquired without personnel operation so that unmanned water environmental monitoring management can be realized, a lot of manpower and material resources can be saved and the working efficiency can be enhanced.
Owner:FUZHOU UNIVERSITY

Novel energy charging pile device

The invention discloses a novel energy charging pile device. The novel energy charging pile device comprises a charging pile body, a charging end and a charging terminal, wherein the charging end is arranged on the right side end face of the charging pile body; the charging terminal is connected with a novel energy automobile; a base is fixedly arranged at the bottom of the charging pile body; a counterweight block is arranged on the bottom in the base; a rain-proof cover is fixedly arranged on the top of the charging pile body; insertion holes which have ports facing rightwards and are formedcorresponding in vertical direction are formed in the charging end; a slide cavity capable of extending leftwards and rightwards is formed between the two insertion holes in the charging end; a leftslide block and a right slide block capable of sliding leftwards and rightwards are arranged in the slide cavity; power transmission plugs which are connected with the commercial power are arranged onthe right end face of the left slide block in vertical direction; electric connectors which are matched with the power transmission plugs are arranged on the left end face of the right slide block vertically.
Owner:广州必果贸易有限公司

Vanadium sodium phosphate positive electrode material, sodium ion battery, preparation method therefor, and use thereof

A vanadium sodium phosphate positive electrode material, a sodium ion battery, and a preparation method therefor and application thereof. The preparation method of the vanadium sodium phosphate positive electrode material comprises the following steps: (1) reacting an aqueous solution containing a vanadium source with a phosphorus source, a reducing agent, a sodium source, and a carbon source, the reaction comprising first performing a reaction of an aqueous solution of the vanadium source and the phosphorus source, and then perform a reaction with the reducing agent, or first performing a reaction of the aqueous solution of the vanadium source with the reducing agent and then performing a reaction with the phosphorus source; (2) drying and calcining the reaction liquid obtained in step (1). The vanadium sodium phosphate positive electrode material has a high dispersibility, and has stable circulation performance when used in a battery.
Owner:SHANGHAI ZIJIAN CHEM TECH CO LTD

Coordinated control method for intelligent charging of electromobile

The invention relates to a coordinated control method for intelligent charging of an electromobile and solves the technical problem that economic and reasonable charging of conventional intelligent charging management on the electromobile is not achieved. The key lies that the redundant capacity of a transformer is utilized to the greatest extent to achieve electromobile charging on the condition of ensuring safety; the basis can be that one or more paths of outputs of the transformer is independently connected with a charging pile, load monitoring is carried out with a load outside the charging pile, and the redundant capacity of the transformer can be utilized to achieve intelligent charging management on the electromobile on the condition that normal power utilization is met; when the redundant capacity of the transformer and the required number for electromobile charging are balanced, the number of the charging piles which can be involved is determined according to percentage, the charging piles are used for charging according to priority rather than the redundant capacity is all used for the charging piles at one time, and thus, the adverse impact brought by abrupt increase of the load of the transformer is reduced.
Owner:SHIJIAZHUANG KE ELECTRIC

Electric vehicle automatic charging system

InactiveCN105244971AImplement automatic requestAutomate the responseBatteries circuit arrangementsCharging stationsElectricityCharge control
The invention discloses an electric vehicle automatic charging system, which comprises a vehicle-mounted control unit, a charging control unit, a vehicle-mounted electricity receiving end, a charging end and a power supply device, wherein the charging end is guided for target-seeking, abutting and charging by ultrasonic or infrared signals of the vehicle-mounted electricity receiving end. Through the design of the electric vehicle automatic charging system and by utilizing ultrasonic or infrared technology, the whole process from charging starting to full-charging stopping of an electric vehicle is intelligent and automatic, and multiple electric vehicles can be respectively and automatically charged according to a demand sequence.
Owner:蔡淑彬

Automatic operating base station for plant protection unmanned aerial vehicle

The invention discloses an automatic operating base station for a plant protection unmanned aerial vehicle. The automatic operating base station comprises a base station (1), a dosing pump (2), a storage tank (3), a control module (4), a dosing module (5) arranged in the base station (1), a positioning push rod module (6) arranged at the top of the base station (1), a battery picking and placing module (7) arranged on the right side of the base station (1), a vertical motion module (8), a horizontal motion module (9), an intelligent rechargeable battery compartment module (10) and a support (11), wherein the dosing module (5) comprises an outer pipe (15), a dosing cylinder (16), a rising positioning cylinder (17), a vertical buffer limit spring (18), a spring fixing seat (19), a straight pipe (20), a dosing head (21) and a conical head (22) located in a through hole; and the automatic operating base station further comprises a gas source module (37) and a power module (38). The automatic operating base station has the advantages that the working efficiency of the plant protection unmanned aerial vehicle is improved, the plant protection unmanned aerial vehicle is automatically dosed and charged, and the degree of automation is high.
Owner:超农力浙江智能科技有限公司

Internet of things-based passive wireless cold-chain transportation vehicle-mounted real-time monitoring system

An internet of things-based passive wireless cold-chain transportation vehicle-mounted real-time monitoring system provided by the present invention comprises a main controller, a sensing unit, a thermal insulation container, a base station, a server and a remote terminal. According to the present invention, aiming at the problem that the external environment of a key agricultural product cold-chain transportation intermediate link needs to be monitored for the whole course, an internet of things technology is utilized to research and develop the main controller, thereby being able to finish the real-time positioning of the cold-chain logistics vehicles and the real-time monitoring of the environmental information; the remote terminal can monitor the cold-chain information real-timely, thereby finishing the real-time monitoring of the environmental information of the logistics links, and becoming a part of the agricultural product information traceability. By adopting an EnOcean energy search technology and an EnOcean wireless communication technology, a sensor is supplied with power, the main controller is charged, the signal lines and the power lines do not need to be deployed, the arrangement is flexible, the power consumption is low, the energy is saved, and the consumption is reduced.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY +1

Starting method for current transformer

The invention relates to a starting method for a current transformer, and is applied to the current transformer of which a main circuit is formed by sequentially connecting a direct current (DC) / DC conversion circuit and a DC / alternating current (AC) conversion circuit. A DC bus capacitor is arranged between the output end of the DC / DC conversion circuit and the input end of the DC / AC conversion circuit. The method comprises the following steps of: connecting an AC power grid with the DC end of the main circuit by a current limiting resistor, charging the DC bus capacitor by utilizing the AC power grid, regulating the main circuit to make the amplitude and phase of the output voltage of the main circuit are the same as those of the voltage of the AC power grid to meet grid connection requirements, and connecting the AC end of the main circuit to the AC power grid. By the starting method for the current transformer, not only relatively lower starting current is ensured to make radiation designing easier to realize, but also synchronous grid connection is realized to make grid connection impact current relatively lower; and the method is particularly applied to the starting of a DC double-channel or multi-channel current transformer.
Owner:BEIJING SOARING ELECTRIC TECH CO LTD

Storage battery charge and discharge circuit topology

The invention relates to storage battery charge and discharge circuit topology which comprises a first stage of circuit, a second stage of circuit and a digital signal processor (DSP) controller; the first stage of circuit comprises three phases of alternating current power grids and an inverter circuit; the inverter circuit is provided with six transistors of a three-phase bridge, and the second stage of circuit comprises a first conversion circuit, a transformer, a second conversion circuit and a battery; and the DSP controller controls the output voltage, the output current and the switching direction of the inverter circuit and two direct current-direct current (DC-DC) conversion circuits so as to control the charge or the discharge of the whole circuit. After the device is adopted, charge and discharge with unit power factor can be realized for a power grid side; the pollution to the power grid is little; through a certain control method, a pulse width modulation (PWM) rectifier can realize a scalable vector graphics (SVG) function; the output of a wide voltage scope can be realized; and the charge and discharge efficiency is higher.
Owner:XIAN ACTIONPOWER ELECTRIC

Multifunctional submerging and floating device with unmanned aerial vehicle taking-off and landing platform

The invention discloses a multifunctional submerging and floating device with an unmanned aerial vehicle taking-off and landing platform. The multifunctional submerging and floating device comprises afloating cabin, the unmanned aerial vehicle taking-off and landing platform, a high-pressure submersible pump, a balance weight cabin and a power drive device. Solar cell panels are arranged, so thatsolar energy serves as an energy source. The multifunctional submerging and floating device is provided with an energy storage device, and an unmanned aerial vehicle, all types of instruments and equipment carried on the multifunctional submerging and floating device and submarine electronic equipment can be charged. Through the maneuverability of the power drive device, the position of the multifunctional submerging and floating device can be adjusted or the multifunctional submerging and floating device can slowly move to the designated position. The multifunctional submerging and floatingdevice is simple in structure, flexible in loading and transporting and quick to arrange; and on the base of the platform, the functions of exploration, receiving, storage, launching, object transit shipment and the like can be expanded as well, and the device is extended to be the universal type multifunctional submerging and floating device which can process all types of information and integrate multiple functions.
Owner:余拓

Charging method, charging circuit and mobile terminal

The invention belongs to the field of mobile terminals and provides a charging method, a charging circuit and a mobile terminal. A temperature detecting circuit detects the temperature of a cell and outputs the temperature to a control circuit; the control circuit judges whether the temperature is lower than first temperature, if the temperature is lower than the first temperature, a heating instruction is sent to a heating circuit, and if the temperature is higher than or equal to the first temperature, a quick charging instruction is output to a quick charging circuit; when receiving the heating instruction, the heating circuit heats the cell; when receiving the quick charging instruction, the quick charging circuit charges the cell with a first current through a charging interface. Even if the cell is located in a low-temperature outside environment, the surface temperature of the cell can be ensured through the heating circuit, the cell can be charged in a large-current mode, and the charging time is saved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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