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585results about How to "Avoid circulation" patented technology

Battery energy storage system based power conversion system and control method thereof

The invention relates to a battery energy storage system based power conversion system and a control method thereof. The power conversion system comprises a battery energy storage system, a bidirectional DC/DC (direct-current) converter, a grid-side current transformer, a filter circuit and an isolated voltage transformer. The battery energy storage system is in parallel connection with a direct-current bus of the grid-side current transformer through the bidirectional DC/DC converter; the grid-side current transformer, the filter circuit and the isolated voltage transformer are connected in sequence; and the isolated voltage transformer accesses to a power grid. The control method includes sequentially monitoring the battery energy storage system, the bidirectional DC/DC converter, the grid-side current transformer, the filter circuit and the isolated voltage transformer by a control circuit. Since the battery energy storage system utilizes battery cells connected in series and is in parallel connection with the common direct-current bus through the bidirectional DC/DC converter, circulation among battery packs is avoided, and capacity expansion of the system is facilitated. Further, by the aid of the monitoring control strategy for SOC (super capacitor state of charge) of the battery energy storage system and battery end voltage, excessive charge or discharge state of the battery energy storage system is avoided, service lives of the battery packs are prolonged, and comprehensive service cost is lowered.
Owner:CHINA ELECTRIC POWER RES INST +2

Distributed photovoltaic power optimizers and control method

The invention relates to distributed photovoltaic power optimizers and a control method. When series connection and parallel connection of photovoltaic modules are mismatched due to factors such as partial or intermittent shielding or aging of photovoltaic arrays, the control method is more obvious in effect. The control method is characterized in that after directly attached to photovoltaic modules, the power optimizers are connected through a series connection framework, and the power optimizers in the series connection framework firstly obtain voltage signals and current signals of the photovoltaic modules connected with the power optimizers and directly perform maximum power tracking on the single module, so that the photovoltaic modules output maximum power, and results are transmitted to a central controller. The central controller receives the maximum power calculated by each optimizer, voltage and current conditions of the shielded modules are monitored, and the voltage and current output by all the modules are coordinated through calculation. The control method not only can ensure that each photovoltaic module works at an optimal working point, but also can enable setting of bus voltage to be more flexible and stable, and the system can serve as a direct-current power supply and also be used for an independent or grid-connection photovoltaic system.
Owner:JIANGNAN UNIV +2

Battery pack parallel charging device and parallel charging method thereof

A battery pack parallel charging device comprises n groups of charging branches, a power module and a battery manager. The charging branches are connected parallelly, each charging branch consists of a battery pack and a switch which are serially connected, and n is the number of the branches of the charging branches; the power module is respectively connected with the switches of the charging branches; and the battery manager is respectively connected with the battery packs and the switches of the charging branches, is used for acquiring voltage of the battery packs in the charging branches, and controls the switches in the corresponding charging branches to be sequentially switched on according to the voltage of the battery packs in the charging branches from low to high. The shortcoming that high ring current is generated among existing battery packs when the existing battery packs are parallelly charged, harmful effects on the existing battery packs and devices in branches are generated, and the existing battery packs and the devices can even be damaged is overcome. By the aid of the battery pack parallel charging device, ring current among the battery packs is greatly reduced, and accordingly safety charging of the battery packs is guaranteed.
Owner:BYD CO LTD

Novel kitchen garbage fermentation device and usage method

The invention provides a novel kitchen garbage fermentation device and a usage method, which belongs to the environmental protection device field. The device provided by the invention comprises a U-shaped fermenter, a feed inlet, a discharge port, a fragmentation stirrer, a variable frequency motor, a blower, a ventilation duct, an air vent, a microbe inlet pipe, a charging nozzle, an electric heating pipe, a water interlayer, a protection layer, a deodorizing tower, a support and the like. The fragmentation stirrer is composed of a stirring horizontal shaft, a blade support and a triangle cone blade with arc bottom. Several electric heaters are arranged in the interlayer of a double layer U-shaped fermenter. The variable frequency motor drives the fragmentation stirrer to perform fragmentation stirring on the kitchen garbage. The electric heating pipe heats the water interlayer so that the temperature of the fermenter can be kept between 40-60 DEG C, air is introduced in the ventilation duct through the blower, and a microbe liquid bacteria agent is inoculated in the fermenter through a nozzle on the microbe inlet pipe. The product is discharged out of the fermenter through the discharge port, thereby the minimization of the kitchen garbage can be realized, and the product can be used as a soil organic fertilizer conditioning agent.
Owner:TIANJIN ECOLOGY CITY ENVIRONMENTAL PROTECTION +1

Two-dimensional code dynamic anti-fake information intelligent tracing system based on network

A two-dimensional code dynamic anti-fake information intelligent tracing system based on a network comprises an anti-fake label, an identity identifying terminal, a communication network, an anti-fake information tracing system and an anti-fake tracing basic information management system. The identity identifying terminal is used for identifying the anti-fake label and sending anti-fake label information to the anti-fake information tracing system through the communication network. The anti-fake tracing basic information management system is connected with the anti-fake information tracing system and used for typing in anti-fake information. The anti-fake label comprises a two-dimensional code label. The identity identifying terminal comprises a two-dimensional code scanner and a network transmission device. The anti-fake tracing basic information management system comprises a two-dimensional code generating device and a two-dimensional code product information remote network management platform. According to the two-dimensional code dynamic anti-fake information intelligent tracing system based on the network, the condition of product distribution flow link execution can be effectively monitored, controlled and supervised, the authenticity of products can be verified reliably and an advanced technology guarantee and a monitoring system are offered to market supervision enhancement of supervising departments such as government quality testing departments, industry and commerce departments and food and drug security departments.
Owner:QINGDAO ODO ENVIRONMENTAL TECH CO LTD

Method and system for processing bill crown word number information

The invention provides a method and a system for processing bill crown word number information. The method comprises the following steps of: acquiring crown word number pictures of bill passing through automated teller machine (ATM) equipment by the ATM equipment; carrying out image identification processing on crown word numbers in the crown word number pictures to identify crown word number contents in the crown word number pictures; and storing the crown word number contents, the crown word number pictures and trade information of the bill on the ATM equipment, and the corresponding relation of the crown word number contents, the crown word number pictures and the trade information to a database, and establishing a searching system for searching the crown word number contents, the crown word number pictures and the trade information. According to the method and the system for processing the bill crown word number information, the crown word number contents of the bill passing through the ATM equipment can be accurately identified, information search basis can be provided for banks or clients of the banks to review and search the circulation information of the bill, and the quick search of the crown word number contents and the trade information of the bill passing through the ATM equipment can be realized; and therefore, the circulation of counterfeit money on the ATM equipment can be effectively avoided.
Owner:CHINA CONSTRUCTION BANK

Resource uploading and resource requesting method in blockchain

The embodiment of the invention discloses a resource uploading and resource requesting method in a blockchain. The resource request method in the blockchain includes the steps that a super node in a service domain receives a request of a user node, wherein the resource request of the user node includes a resource feature value; the super node searches for segment storage information, correspondingto a content resource, in an alliance chain according to the resource feature value, and returns the segment storage information to the user node; the super node calls an intelligent contract corresponding to the resource feature value in a public chain to declare a current resource service process; the user node downloads the resource data according to the segment storage information; the user node calls the intelligent contact corresponding to the resource feature value in the public chain to pay the benefits of the parties in the current resource service process. According to the technicalsolution provided by the embodiment of the invention, the method makes the copyright information and the benefit distribution rule of a content resource be transparent in the public chain, improves the initiative of resource sharing, and reduces the risk of resource loss in the process of resource access.
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Block assembly type yielding hollow grouting anchor rod and construction method thereof

The invention discloses a block assembly type yielding hollow grouting anchor rod. The block assembly type yielding hollow grouting anchor rod comprises a hollow anchor rod body, a hollow anchor cablerod body, a yielding device, a tray, a nut, a slurry stopping plug, an anchor cable hoop sleeve and a chambering device, wherein the yielding device, the tray, the nut and the slurry stopping plug are arranged on the hollow anchor rod body, the anchor cable hoop sleeve and the chambering device are arranged on the hollow anchor rod body, and the hollow anchor rod body is connected with the hollowanchor cable rod body through a connecting sleeve. The block assembly type yielding hollow grouting anchor rod can give full play to the advantages of an anchor rod and an anchor cable, not only canthe hanging action of the anchor rod to shallow surrounding rock be utilized, but also the stability of deep surrounding rock can be improved by utilizing the anchor cable, favorable independent and multipoint yielding effects on the hollow anchor rod body can be achieved by the yielding device, the whole harmony of the hollow anchor cable rod body is improved by a anchor cable hoop, multipoint grouting is realized by the chambering device, the rod body length can be freely adjusted according to requirement, and on-site construction and adjustment are convenient.
Owner:ANHUI UNIV OF SCI & TECH

Security check system capable of recognizing prohibited articles based on ray technology and deep learning

The invention relates to a security check system capable of recognizing prohibited articles based on the ray technology and deep learning, and the system is characterized in that the system comprisesa nuclear density meter, a spectrum analyzer, an X-ray security detector, a GPS module, a wireless communication module, a microcontroller, a power module, an alarm module, and a display module; the X-ray security detector stores a collected X-ray transmission image and corresponding image position information in the image storage module, and the function of the microcontroller is to realize the segmentation of an article image and recognize whether a sub-image is an image of a suspicious prohibited item or not, so as to facilitate further identification and confirmation; the wireless communication module realizes the communication of the nuclear density meter, the spectrum analyzer and the X-ray security detector with the microcontroller. The structure chart of a designed security check device consists of a conveyor belt (1), a device housing (2), a ZA150180 channel X-ray machine (3), a DensityPRO (4), a CMS-2S fast spectrum analyzer (5), and an alarm (6). The system achieves the recognition of the suspicious prohibited item through the knowledge of deep learning, and then combines with the nuclear density method and the spectrum imaging technology for further confirming the suspicious prohibited item.
Owner:ANHUI UNIV OF SCI & TECH

Banknote authentication mobile terminal and authentication method thereof

The invention relates to wireless communication technology and image processing, red light, purple light, laser banknote identification technology and identification method, banknote identification mobile terminal, the mobile terminal is equipped with a camera and a display screen, and is characterized in that it is also equipped with A red light emitter, a purple light emitter, a laser emitter and a receiver for banknote authenticating, the receiver is connected with the mobile terminal microprocessor. The counterfeit identification method of the banknote identification mobile terminal includes identifying the authenticity of the banknote: if the banknote is genuine, the result will be sent to the currency security management center through mobile terminal communication, and the banknote flow direction will be provided for the currency security management center; if the banknote is fake banknotes, stolen banknotes or known illegal banknotes, the banknote information will be sent to the Currency Security Management Center to update the counterfeit banknote database. On the basis of retaining the basic communication functions of the original mobile terminal, the invention can detect and identify counterfeit banknotes in circulation, is convenient to use, checks banknotes quickly, and curbs the circulation of counterfeit banknotes.
Owner:顾栽延 +1

Aluminum alloy energy saving window or door system

The invention discloses an aluminum alloy energy-saving door and window system. Heat insulation rubber strips are added between the section material of a window frame and a sash, and an air cavity of hollow glass; thereby the gas among the hollow glass, the window frame and the sash is blocked off, and the space is divided into three air cavities so as to form a cold and thermal bridge multi-cavity structure; the heat insulation rubber strips between the window frame and the sash, and equal pressure sealing rubber strips receptively adopt high low rail cold and thermal bridge structures, and the space is divided into three air cavities by matching window frame side pressing rubber strips and sash side pressing rubber strips, thereby a cold and thermal bridge multi-cavity structure is formed. The section material outside the sash is a step-shaped structure, the air cavity of hollow glass is positioned on the identical line with a heat insulation chamber of the window frame, a sealing gasket is additionally arranged on the upper side of the hinge of the sash in advance, a water drainage cap of the window frame is a drainage type water drainage cap, and parallel flow guiding pieces which are arranged at intervals are arranged at the water outlet of the water drainage cap. The door and window system has the advantage that the heat preservation, waterproof and sound-insulation performances of an external window of a building can be greatly improved.
Owner:谢光

Charging and exchange integrated power battery system, working method and application

The invention discloses a charging and exchange integrated power battery system, a working method and application. The charging and exchange integrated power battery system comprises a fixed power battery pack and at least one exchange power battery pack. The power output terminal of the fixed power battery pack and the power output terminal of the exchange power battery pack are connected to thepower input terminal of a driving motor, and connected to the power input terminal of an auxiliary power source through a DCDC module. The power output terminal of the auxiliary power source is connected to the power input terminal of a fixed power battery management system, the power input terminal of an exchange power battery management system and the power input terminal of a main controller. The main controller performs information interaction with the fixed power battery management system, the exchange power battery management system and the DCDC module. Information interaction is performed between the fixed power battery management system and the fixed power battery pack. Information interaction is performed between the exchange power battery management system and the exchange powerbattery pack. Electric vehicles can be quickly charged, the volume of the power battery packs is expanded, the mileage of electric vehicles is increased, the mileage anxiety is relieved, and the driving experience is enhanced.
Owner:XIAN TGOOD INTELLIGENT CHARGING TECH CO LTD

Vibration reducing, completely dischargeable, double stirring reaction device for material supply

The invention provides a vibration reducing, completely dischargeable, double stirring reaction device for material supply. The device includes a tank body and an upper lid; inside the aforementioned tank body is placed with a reactor chamber; on the aforementioned upper lid is arranged a feeding pipe; inside the aforementioned reactor chamber is arranged with a first stirring device and a second stirring device; the aforementioned first stirring device consists of a first stirring motor, a first stirring shaft, a first stirring piece and a stock guide plate; the aforementioned second stirring device is placed on the bottom part of the tank body, and the second stirring device consists of a second stirring motor, a second stirring shaft and a second stirring piece; the bottom of the tank is connected with a vibration reducing device through a supporting piece; the present invention stirs the material supplies from different directions through the placements of the first stirring device and the second stirring device, thus preventing the loop current from being produced by the material supplies in the tank body, facilitating a full blending of the material supplies and the high efficiency reactions of material supplies; through the vibration reducing device, the vibrations are absorbed during the reaction process of stirring material supplies, which prevents the equipment from shortening service life by long-term use.
Owner:ZHENGZHOU YOUAI NETWORK TECH CO LTD
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