74results about How to "Fully utilized capacity" patented technology

The invention discloses a method and system for estimating remaining available capacity of a lithium ion power battery pack. The method comprises the following steps: recording the current value in the charging process and the time used by charging, and calculating the total available capacity of the lithium ion battery at the starting time of discharging, thereby obtaining the total available capacity A of the lithium ion battery; recording the open-circuit voltage and the voltage drop delta V in the discharging process, selecting the curvilinear function used by calculating the remaining available capacity percentage through the voltage drop delta V, and obtaining the remaining available capacity percentage a of the lithium ion battery; obtaining the service efficiency of the remaining available capacity SOC of the battery at the current temperature by utilizing the relation between temperature and remaining available SOC; and adding A*a* of all the batteries to obtain the remaining available capacity of the lithium ion battery pack. The system for realizing the method comprises a voltage, current and temperature monitoring module for monitoring the battery pack information, the monitoring module feeds the monitored information back to the MCU, and the MCU outputs the estimated remaining available capacity of the lithium ion power battery.

The invention discloses a method for realizing hardware mirror startup optimization for embedded operating system, not directly ending running of embedded operating system but saving state of the running operating system together with microkernel of the operating system into the in-chip memory of a processor, directly loading at the time of startup and restoring to the running state saved. And it can remarkably speed up system booting and restart so as to remarkably raise startup speed of the embedded system and reduce the time for user to wait.

The application relates to the technical field of intelligent trash bins, in particular to a trash bag component and an intelligent trash bin. The trash bag component includes a storage body and a cover; the storage body is provided with a first through hole and a circular channel arranged around the first through hole and used for storing a trash bag; the cover is provided with a second through hole corresponding to the first through hole; an opening of the circular channel is covered; a gap is provided between the cover and one sidewall of the circular channel so as to form a trash bag outlet. The trash bag component with these settings has the advantages that the trash bag component can be applied to intelligent trash bins so as to conveniently implement the function of full-automatic laying and packing of trash bags, thereby further increasing trash bin automation level and intelligence level; damage to trash bags during production, storage and transport of the trash bags is effectively avoided; trash bag changing is simple so that efficiency can be improved; the trash bag component is of integrate structure, is convenient to assemble and helps reduce production and mounting costs.

The device includes following parts. The protection switches of 4 multiplexing segments are utilized to change optical fiber line. Two pair of wavelength division multiplexer / wavelength demultiplexer combines multiple optical signals with different wavelengthes onto one optical fiber; or separates the optical signals, which is combined from multiple different wavelengthes. N pieces of matrices with 4 in and 4 out of the optical switches are utilized to change the propagation direction or protect the channel needed. 2n pieces of optical power equalizers are used to balance the power of the optical signals. 2n+2 pieces of monitors are used to monitor and detect faults. The invention provides the flexible protection for channel faults, line faults and node device fault.

The invention discloses a prerecording method used for monitoring equipment. A hard disc memory of the monitoring equipment is provided with a command storage area and a prerecording storage area. The prerecording method comprises the following steps that: a data processing unit of the monitoring equipment performs data processing on real-time signals acquired by a signal acquisition end to obtain monitoring signals, and stores the monitoring signals from a starting section of the prerecording storage area to a stop section of the prerecording storage area in turn; when the prerecording area is full, the data processing unit stores the monitoring signals from the starting section to the stop section one by one again in a coverage way; and when the monitoring equipment enables a conventional recording function, the data processing unit writes prerecording signals in the prerecording storage area into the common storage area as a starting part of the recording file first, and then continuously writes the monitoring signals recorded in real time into the common storage area. The method of the invention can fully utilize the characteristics of large capacity of a hard disc and a plurality of monitoring channels can be arranged on one set of monitoring equipment so as to fulfill the aim of low-cost monitoring. The popularization and the application of the method can effectively improve the technical level of the monitoring equipment.

An intelligent traffic system based on visible light communication is disclosed. The invention relates to an intelligent traffic system and aims to provides high network access, satisfies the market demands, and solve the problem that a conventional traffic system is highly expensive in network access, wireless Wi-Fi technique has safety risk on crosstalk control passband and is low in feasibility. The intelligent traffic system comprises a Wi-Fi base station which comprises fiber links, establishes connection between an accessing terminal and an Internet terminal, processes electric signals, and receives and / or sends electric signals; a street lamp which comprises a photoelectric communication apparatus, receives the electric signals of the Wi-Fi base station, converts the electric signals into optical signals and sends the optical signals; and an automobile which comprises a photoelectric communication apparatus, receives the optical signals of the street lamp and / or sends optical signals to the street lamp. The intelligent traffic system is applicable to high speed network access on roads.

The invention discloses a power collection and transmission system for a wind power plant. The system comprises an alternating current generatrix, a wind generating set, a rectifier station and an inverter station, wherein the rectifier station comprises a rectifier and a converter transformer; the direct current side of the rectifier is connected with the direct current side of the inverter station, and the alternating current side of the rectifier is connected with one side of the converter transformer through a converter inductor; and the other side of the converter transformer is connected with the alternating current generatrix, and is grounded through a capacitor. The invention also discloses a voltage control method for the alternating current generatrix of the system. The voltage comprising the amplitude and frequency of the voltage of the alternating current generatrix of the system is integrally controlled by two control dimensions of the rectifier on a wind power plant side, so that the stability of the alternating current voltage of the power collection and transmission system of the wind power plant is ensured, and harmonic components of an alternating current system of the wind power plant are reduced.

The invention discloses a configuration method and device of waste power batteries. The method includes the following steps that: the characteristic parameters and identification information of a plurality of target waste power batteries of electric vehicles are acquired respectively; mapping relationships between the characteristic parameters and the identification information are established, wherein the characteristic parameter of each target waste power battery is corresponding to one piece of identification information; identification information corresponding to characteristic parameters within in a first preset numerical value is classified as the same identification information set according to the mapping relationships; and target waste power batteries corresponding to identification information in the same identification information set are configured to one battery group, wherein the battery group is used for providing electric energy for a target electric power device. With the configuration method and device of the invention adopted, the technical problem of the waste of surplus capacity of power batteries which is caused by direct disassembly for recycle when the service lives of the power batteries in the electric vehicles are terminated can be solved.

The invention discloses a method for achieving optimal configuration of the capacity of energy storage equipment in the islanding mode of a regional power grid comprising a DG. The method comprises the steps of monitoring output power data and load data of the DG at each time point, and fitting the probability distribution function of the output power data and the probability distribution function of the load data respectively; establishing a control strategy for charging and discharging of the energy storage equipment, and obtaining a control rule for the output power of the energy storage equipment; establishing the dynamic semi-invariant of the DG and the load, and obtaining the probability distribution of the charging and discharging power of the energy storage equipment; establishing a configuration optimization model with the minimization of the capacity of the energy storage equipment as the target and the charged state of the energy storage equipment as the inequality constraint condition, and working out the configuration capacity of the energy storage equipment. According to the method, the dynamic semi-invariant is introduced to constrain the probability distribution of the output power of the energy storage equipment within a certain confidence coefficient, the control strategy for the charging and discharging power of the energy storage equipment is introduced to guarantee that the energy storage equipment does not operate in the depleted state or the saturated state for a long time and the capacity of the energy storage equipment is fully utilized, and therefore the power quality and the economy can be guaranteed in the islanding mode of the regional power grid.

The present invention provides a voltage equalizing circuit for spare power source, the spare power source includes n power supply monomers which are connected with each other in series; the equalizer circuit includes a sampling resistance Rs, an input switch circuit, a transformer T1 and n output rectification filter circuits; the input switch circuit is connected with the original edge of the transformer T1 in parallel and then connected with the two ends of the spare power source by the sampling resistance Rs; the auxiliary edge of the transformer T1 has n voltage reduction output ends, the output voltage of each voltage reduction output end is completely identical and coupled tightly; each rectification filter circuit is connected with one voltage reduction output end, each rectification filter circuit and the input switch circuit form the single end backlash; each rectification filter circuit is respectively connected with each power supply monomer in parallel. The present invention not only can prevent the series power supply monomer from the unbalancing for the voltage, but also can sufficiently use the capacity of each power supply monomer, and simultaneously reduce the consumption caused by the equal voltage.

The invention relates to a photovoltaic power generation system low voltage ride through reactive control method. The method comprises the following steps: (1) calculating and storing output active power Ppre of a photovoltaic grid-connected inverter before faults; (2) detecting whether actual voltage E of a grid-connected point drops, and 0.2EN<=E<=0.9EN, EN being nominal voltage of the grid-connected point, if yes, executing step (3), if no, using a grid-connected control method when network voltage is normal to control; (3) switching the photovoltaic grid-connected inverter to a low voltageride through reactive control mode, specifically including (31) obtaining maximum active power Pmax the photovoltaic grid-connected inverter allows to output, (32) if Ppre<=Pmax, making the photovoltaic grid-connected inverter work in a MPPT mode, otherwise, making the photovoltaic grid-connected inverter work in a non-MPPT mode; (4) returning to the step (2) and executing in a looping manner. Compared with the prior art, the method makes use of capacity of the photovoltaic inverter to the maximum extent, investment of reactive equipment is saved, and resources are saved.

The invention provides a combination type garbage can. The combination type garbage can comprises a garbage can shell, a garbage can inner barrel and a cover plate, wherein the garbage can shell comprises a shell body, a garbage feeding opening and a first opening are formed in the shell body, and a herringbone cover plate group is arranged at the part of the garbage feeding opening; the size of the cover plate is matched with that of the first opening, and a boss and a clamping part are arranged on the cover plate; and a second opening and a U-shaped clamp are arranged on the garbage can inner barrel. By applying the technical scheme, the integral structure is simple. By adopting the combination design of the garbage can shell and the garbage can inner barrel, the garbage can shell is always kept clean and tidy, and the garbage can inner barrel can meet garbage storing requirements, so that the practicability is strong. The design objective of the cover plate is to seal the first opening, and the clamping part arranged on the cover plate is clamped by a manipulator to take the garbage can inner barrel out of the garbage can shell and restore the garbage can inner barrel in the original position. The operation is convenient, and fixed-point placing requirements are met.

The invention discloses a regional active frequency coordination control method and device based on a virtual synchronous generator, a terminal and a computer storage medium. The method comprises thesteps of acquiring the output power command of the virtual inertia of a virtual synchronous generator and the output power command of the virtual primary frequency modulation; and distributing activepower to each virtual synchronous generator according to the output power command of the virtual inertia of each virtual synchronous generator and the output power command of the virtual primary frequency modulation. Under the condition that additional equipment is not added, the virtual synchronous machine principle is utilized, and the primary frequency modulation characteristic of the synchronous machine is simulated. The coordinated operation of multiple VSG is considered, and the active frequency stability of the system is increased. Compared with a traditional controller based on a localmodel design, method and device better consider the influence of the peripheral VSG, so that better coordination work between VSGs is realized, and the stability of a power grid system is improved.

The invention discloses a compound control method of a three-phase to two-phase orthogonal inverter power supply with a reactive compensation function on the basis of a three-phase to two-phase orthogonal inverter power supply system. The three-phase to two-phase orthogonal inverter power supply system comprises a three-phase power supply, a three-phase PWM (Pulse Width Modulation) rectifier bridge, a three-bridge-arm inverter bridge and an electromagnetic stirrer, wherein a small inductor is connected between the midpoint of a public-phase bridge arm of the three-bridge-arm inverter bridge and a grounding point of the electromagnetic stirrer in series; the current waveform in a coil of the electromagnetic stirrer can be improved and a two-phase orthogonal inverter circuit can adopt a dead-beat current control method which has rapid tracing property and is easy to realize digital control, and thus the design of the controller is simplified and the current tracking speed is improved. The compound control method disclosed by the invention can enable the three-phase PWM rectifier bridge to work in a rectifier power supply and also can be used for carrying out reactive compensation on a load outside a network side, makes full use of the equipment volume of the three-phase PWM rectifier bridge and saves the reactive compensation equipment.

The invention relates to a split combined type sampling bottle for collecting a water sample containing a volatile substance and an oxygen-sensitive substance. The split combined type sampling bottle structurally comprises a bottle body, a bottle cover, a pressing plate and a protection cap, wherein the bottle body is formed by an upper bottle body and a lower bottle body which are in folding threaded connection; an O-shaped sealing ring is arranged at a joint; bottlenecks are respectively formed in the upper bottle body and the lower bottle body. By adoption of an upper and lower split combined structure and an upper-bottleneck and lower-bottleneck structure, the sampling bottle disclosed by the invention can realize a specific sampling mode down water feeding and up air exhausting; in a process of injecting the water sample into the bottle, a water outlet end pipe is not needed to be plugged into the sampling bottle, so that interference caused by manmade factors is avoided, and the fidelity of the sample is improved; in a water sample collection process, the rise speed of the water level in the bottle is steady, and is slowly changed; meanwhile, air in the bottle is exhausted, and the pressing plate is closed until the bottle is full of water and water overflows, so that the redundant water sample is discharged, and no redundant space cannot be retained in the bottle; therefore the single sampling success rate is high, and the working efficiency is improved.

The invention relates to a battery management system with a fault battery isolation function and a method, which are characterized in that the management system comprises a health state diagnosis module, a fault battery isolation module and a control module respectively connected with the health state diagnosis module and the fault battery isolation module. By means of the independence characteristics of each battery monomer in a battery pack, and by opening and closing a network to isolate fault batteries, the safety and utilization efficiency of the battery pack are considered. The battery management system can be simultaneously applied to the following two conditions to effectively ensure the safety of the battery pack and fully utilize the capacity of the battery pack, 1 due to structural defects possibly happen to the battery monomer, for example, an open circuit appears inside the battery monomer, a battery must be isolated immediately and replaced at an appropriate time; 2 over-charge or over-discharge and the like possibly appear to part of the battery monomer, and at the moment, a user only needs to stop continuously charging or discharging the battery.

The invention relates to an electricity-water cogeneration system using a diesel generator coupled with multi-effect distillation. The electricity-water cogeneration system comprises the diesel generator, a generator cylinder sleeve water cooling system and a sea water desalination. By respectively arranging load-discharge and energy-saving standby devices such as temperature detecting controllers, flow control valves and coolers at different positions in the generator cylinder sleeve water cooling system and the sea water desalination system, good adaptability of the sea water desalination system and the diesel generator is achieved under the overload or low load of the diesel generator, and stable operation of generating equipment and sea water desalination equipment is guaranteed.

The invention relates to an aerial cable car system (1) having transportation operating equipment for passenger and / or freight transport, wherein electrical consumers are connected for the operation thereof to a rechargeable electrical energy store (14) of a transportation operating equipment (13) by means of one each of a plurality of the power circuits, wherein the transportation operating equipment (13) comprises an operating control device (140) connected to measuring devices (1400) for dynamically capturing measurement values based on the available quantity of energy in the energy store (14), wherein the operating control device (140) comprises a storage module (1401) having at least one stored measurement control value and an associated control parameter, wherein the operating control device (140) comprises a filter module (1402); for comparing a captured measurement value to the at least one stored measurement control value and for reading out the corresponding stored control parameter, based on which power circuits (30) can be selectively coupled to the energy store (14) or selectively decoupled from the same by means of the operating control device (140). Electrical consumers in transportation operating equipment (13) can be fed without interruption by means of the energy store (14), even during travel. A safety power circuit can also be implemented, by means of which, for example, mountain information devices can be operated in case of emergency even if the energy store (14) has a minimal energy reserve.

The invention discloses a garbage can capable of crushing garbage, and relates to articles of daily use. The garbage can comprises a can body and a can cover, wherein a partition is arranged inside the can body; a pass hole is formed in the middle of the partition; a rotating motor is arranged on the pass hole; a plurality of blades are uniformly arranged on the circumference of the rotating motor; a spring is arranged inside the can cover; a pressing plate is arranged on the spring; guide grooves are formed in the side wall of the can cover; limiting sliding blocks which are matched with the guide grooves are arranged on the pressing plate; an air suction ring sleeves the pass hole; a plurality of air suction holes are uniformly formed in the circumference of the pass hole; a filter screen is arranged on the air suction holes; a plurality of air suction pipes which are matched with the air suction holes and are obliquely arranged upwards are arranged on the air suction ring; and an air pump which is connected with an annular air injection ring and the air suction ring is arranged inside the can cover. Compared with the prior art, the garbage can has the advantages that garbage can be primarily crushed when garbage is thrown, garbage is divided into a plurality of small blocks, and the surface area of garbage is decreased, so that garbage is stored more easily, and the capacity of garbage bags can be fully utilized.

The invention provides a device for supplying power through a battery and a power supply method of the device. The device comprises a control circuit, a direct current / direct current conversion circuit and a power utilization circuit, wherein the control circuit is used for detecting an input signal and generating a control signal used for instructing the work state of the device based on the input signal; an input port of the direct current / direct current conversion circuit is used for being connected with a positive electrode and a negative electrode of the battery, the direct current / direct current conversion circuit receives the control signal and converts the input voltage of the input port into the output voltage, responds to the control signal and instructs the device to be in the non-standby state, so that the voltage value of the output voltage generated by the direct current / direct current conversion circuit is a first voltage; the direct current / direct current conversion circuit responds to the control signal and instructs the device to be in the standby state, so that the voltage value of the output voltage generated by the direct current / direct current conversion circuit is a second voltage different from the first voltage; the power utilization circuit is connected with an output port of the direct current / direct current conversion circuit so as to receive the output voltage. The battery capacity can be fully used by the device, so that use cost is reduced, and a constant supply current is maintained.

The invention relates to a split combined sampling bottle for collecting water samples containing volatile substances and oxygen-sensitive substances. The structure includes a bottle body, a bottle cap, a pressing plate and a protective cap; The two parts of the bottle body are threadedly connected, an O-shaped sealing ring is arranged at the joint, and bottlenecks are respectively arranged on the upper bottle body and the lower bottle body. The sampling bottle of the present invention adopts an upper and lower split body structure and an upper and lower bottle mouth structure, which can realize the unique sampling mode of "water inlet from the bottom and exhaust from the top". The interference of human factors is avoided, and the fidelity of the sample is improved; during the water sample collection process, the water surface in the bottle rises steadily and changes slowly, and at the same time, the air in the bottle is discharged until the water overflows, the pressure plate is closed, and the excess water sample is discharged , There will be no extra space in the bottle, and the success rate of one-time sampling is high, which improves the work efficiency.

The invention relates to a special sampling bottle for collecting a water sample containing a volatile substance and an oxygen-sensitive substance. The special sampling bottle structurally comprises a bottle body for accommodating the water sample, a bottle cover covering the upper opening of the bottle body, and a plunger mechanism plugging the top opening in the center of the bottle cover, wherein the plunger mechanism comprises a fixed pipe, a T-shaped padding plug and a protection cap. Due to a special bottle body structure and a special bottle cover structure, the bottle cover and the bottle body can synchronously discharge a certain amount of water in the bottleneck in a buckling process, so that the sampling bottle is not required to be vertical absolutely no matter whether the site is flat or not; after the sampling bottle is full of the water sample, even if certain water-sample-free redundant spaces are retained in the bottleneck, all the redundant spaces other than the water sample in the bottleneck can be discharged during filling type buckling of an inner sealing cover as long as the volumes of the retained spaces are smaller than the extruded volume of the inner sealing cover on the bottle cover; therefore the sampling bottle can be full of the water sample, no redundant space is retained, and sampling can be succeeded at one step.

The invention discloses a photovoltaic charging system. The system comprises a photovoltaic substrate, an energy storage battery and a charging port which is used for externally connecting the charging ends of electro-mobiles, wherein the photovoltaic substrate, the energy storage battery and the charging port have the charging connection relationships as follows: charging connection A: the photovoltaic substrate is connected with the energy storage battery through DC-DC conversion; charging connection B: the energy storage battery is connected with the charging port through DC-DC conversion; and charging connection C: the photovoltaic substrate is connected with the charging port through DC-DC conversion. The photovoltaic charging system is simple in charging conversion process and high in efficiency. The charging connection A of the photovoltaic charging system is preferably realized by two DC-DC converters in parallel. The invention furthermore preferably discloses a running method of the photovoltaic charging system; according to the steps in the running method, functional modes can be established to form a functional mode framework; and the running method is mainly realized through computer programs stored in computer readable storage mediums.

The invention relates to the field of cloud computing virtual desktops, and discloses a method for establishing a virtual desktop. The method is used for establishing the virtual desktop in a storage device of a virtual desktop computing node, and the storage device is a local solid state hard disk or a local mechanical hard disk or a shared storage disk. The method includes the steps that the storage device is selected based on the performance and cost requirements of a user for the virtual desktop, and the selected storage device meets the requirement for the storage type of the to-be-established virtual desktop; different storage characteristics are sufficiently used according to user scenes; the system storage cost is reduced while the virtual-desktop establishing efficiency is guaranteed. The invention further discloses a system for establishing the virtual desktop. The user can flexibly select the cache establishing time according to practical requirements, and the management efficiency can be improved.

The invention discloses a control method for coordinating the combined operation of multiple independent energy storage power stations, and the method comprises the steps of enabling a unit DCS to distribute the AGC instructions issued by a dispatcher according to the operation conditions of the energy storage power stations, synthesizing the feedback signals of the multiple independent energy storage power stations, and feeding back an energy storage signal to the dispatcher as a whole; when the energy storage performances of the energy storage power stations are equivalent and the initial electric quantities are close to each other, determining an energy storage output proportion according to an energy storage capacity proportion; when the energy storage performances of the energy storage power stations are different or the initial electric quantity difference is larger, determining the energy storage output proportion according to the energy storage available power proportion; and when the output of any energy storage power station is limited due to a fault, setting the energy storage output proportion manually through the unit DCS. The invention also discloses a control system for coordinating the combined operation of the plurality of independent energy storage power stations. According to the present invention, transverse connection between the energy storage power stations is not needed, brand and product type limitation on the newly-added energy storage power stations is avoided, and continuous expansion is easy.

The invention discloses a method for achieving optimal configuration of the capacity of energy storage equipment in the islanding mode of a regional power grid comprising a DG. The method comprises the steps of monitoring output power data and load data of the DG at each time point, and fitting the probability distribution function of the output power data and the probability distribution function of the load data respectively; establishing a control strategy for charging and discharging of the energy storage equipment, and obtaining a control rule for the output power of the energy storage equipment; establishing the dynamic semi-invariant of the DG and the load, and obtaining the probability distribution of the charging and discharging power of the energy storage equipment; establishing a configuration optimization model with the minimization of the capacity of the energy storage equipment as the target and the charged state of the energy storage equipment as the inequality constraint condition, and working out the configuration capacity of the energy storage equipment. According to the method, the dynamic semi-invariant is introduced to constrain the probability distribution of the output power of the energy storage equipment within a certain confidence coefficient, the control strategy for the charging and discharging power of the energy storage equipment is introduced to guarantee that the energy storage equipment does not operate in the depleted state or the saturated state for a long time and the capacity of the energy storage equipment is fully utilized, and therefore the power quality and the economy can be guaranteed in the islanding mode of the regional power grid.