618results about How to "Meet electricity demand" patented technology

The invention discloses a GPS (global positioning system) navigation based intelligent feeding and spraying system and device, and belongs to the field of aquaculture equipment. A main controller receives a task and an instruction inputted by a man-machine interaction subsystem, and controls a feed subsystem to execute feed action; the feed subsystem feeds back feed information to the main controller, and the feed information is displayed to the man-machine interaction subsystem; a hull controller receives hull movement information inputted by a hull and a movement subsystem and controls the hull to move, and a feeding (spraying) subsystem executes feeding (spraying) action under an instruction of the hull controller; the feeding (spraying) subsystem feeds back feeding (spraying) information to the hall controller; the main controller and the hull controller are wirelessly connected through a communication subsystem. Labor intensity of aquaculture farmers is lowered greatly, accurate feeding of feed and uniform spraying of medicine are realized, use efficiency of the feed and medicine is improved, impact of aquaculture on the environment is reduced, and the system and device is particularly applicable aquaculture of shrimps and crabs.

The invention discloses a method for optimizing power utilization modes of residential users with orientation to demand response. The method comprises the following steps: building load response dynamic models comprising an air conditioner load response model, a water heater load response model and a lighting load response model of typical power utilization equipment of the residential users; determining a target function of a power utilization mode optimizing model by taking the minimum power utilization cost and highest power utilization manner satisfaction degree of the users as targets; building constraint conditions of the power utilization mode optimizing model, which comprise adjustable constraint of indoor temperature, the water temperature of the water heater and a lighting surface; solving the model by using a particle swarm algorithm combined with the grey theory to obtain state control variables of the air conditioner, the water heater and the lighting load in various time periods and determine the optimal operation manner of each power utilization equipment. The method is applied to optimization examples of different power utilization scenes of the residents and provides a specific reference scheme for the participation of the residential users in the demand response projects, thereby achieving the effects of meeting the power utilization demand, reducing the power utilization cost and optimizing the load peak.

The invention relates to an intelligent self-driven remote-control and remote-measuring solar buoy. The solar buoy is mainly composed of a self-driven system, a Fresnel lens, light-emitting diode (LED) flash lamps and an integrated control system. The solar buoy is characterized in that a solar photovoltaic component, a polymer lithium battery, LED light sources, a flash control module, a global positioning system (GPS) and a 3G wireless communication module and a system safety detection module are connected through a bus and integrated and sealed in a cavity formed by the lamp lens and the base; and the self-driven system is mounted at the bottom of the buoy. The intelligent self-driven remote-control and remote-measuring solar buoy has the advantages that the normal monitoring range is large, the fault alarm is timely, the locating accuracy is high, and the remote control function is strong, and when an anchor chain below the buoy is fractured, the buoy can correct the position automatically to return to an initial position.

The invention provides a distributed photovoltaic power distribution network planning method based on an improved particle swarm. The method comprises the steps of building a power distribution network structure model and initializing particle swarm algorithm parameters; determining a clustering result according to load information of each node to generate an initial swarm; calculating distributedphotovoltaic total daily output data of each node of a power distribution network in each period of time by sampling a photovoltaic typical daily output curve and a regional typical daily load curve;building a target function model according to the loss of the power distribution network and a voltage of each node; for particles in the swarm, performing power flow and network loss calculation byapplying a forward and backward substitution method to build an optimization model; updating the positions of the particles according to preset parameters through an iterative result, and re-evaluating the fitness values of the particles; and if the particles reach a maximum iterative frequency condition, outputting an optimal solution, namely, the current optimal solution of the swarm at the endof iteration, otherwise, re-planning an installation scheme. According to the method, more distributed photovoltaic power generation systems can be installed at grid connection points under the condition that the voltage does not exceed a limit, so that the electricity utilization requirements are met.

The invention provides an electric vehicle charging guidance method considering road-network-vehicle, which considers the charging demand difference of different types of electric vehicles, performs optimized guidance scheduling on the electric vehicles in slow charging and fast charging modes from two aspects of day-ahead and real-time. The method comprises the following steps: establishing an electrical traffic cooperative control architecture; formulating a charging station selection and navigation strategy; formulating a time-sharing and zoning electricity price to guide quick charging; and establishing a double-layer optimization scheduling model to guide slow charging. According to the method, on the premise that the safety and economy of a power distribution system are guaranteed, the satisfaction degree of power consumers is considered, and different charging requirements, time and space and other factors are considered to research the guide strategy and operation mode of the electric vehicle. Analysis of the charging station and system load conditions before and after optimization shows that the method enables the system load to be gentler than that in a free charging mode, plays a role in peak clipping and valley filling to a certain extent, and improves the operation safety and economy of a power system.

The invention provides an independent photovoltaic dragging system capacity configuration method based on a multi-target optimization algorithm. The method comprises steps of: step 1, determining a topology structure of an independent photovoltaic dragging system; step 2, setting an energy control strategy of the independent photovoltaic dragging system; step 3, establishing an optimal configuration module; step 4, inputting a basic parameter of the independent photovoltaic dragging system; and step 5, according to the established optimal configuration module, using an improved NSGA-II multi-target optimization algorithm to solve an optimal solution set, analyzing the optimal solution set and carrying out weight allocation on the target function of each solution so as to calculate the finial configuration result. According to the invention, when electricity utilization requirements of users are met, environment load is reduced.

The invention discloses a method for grid and province two-stage real-time generation schedule coordinative optimization under a generalized tie line mode. The method is characterized by comprising the following steps that firstly, province scheduling generalized tie line plans are obtained through calculation; secondly, a grid scheduling department issues all the province scheduling generalized tie line plans to corresponding province scheduling departments, and the grid scheduling department obtains a generalized tie line plan of each grid scheduling side directly under the province scheduling through calculation; thirdly, sensitivity information is calculated; fourthly, all kinds of information are read; fifthly, the generalized tie line soft constraint of the corresponding province is added, soft constraint cost is added to a conventional optimization object at the same time, then a province-stage power grid mathematic model is formed, the generalized tie line soft constraint of each grid scheduling side directly under the province scheduling is added, soft constraint cost is added to the conventional optimization target at the same time, then a first area power grid mathematic model is formed, the whole-grid grid scheduling side generalized tie line constraint is added on the basis of the first mathematic model, and a second area power grid mathematic model is formed; sixthly, optimization calculation is started. The method for grid and province two-stage real-time generation schedule coordinative optimization under the generalized tie line mode has the advantages that calculation intensity is low and adaptability is high and is suitable for popularization and application in China scheduling mechanisms of all scales.

The invention discloses a source-load-storage coordinated scheduling method for improving new energy consumption. The method comprises the steps of S1, aggregating a thermal power plant, a new energypower plant, user loads and energy storage equipment into a source-load-storage scheduling system, and obtaining a new energy output curve, a heat utilization load curve and a power utilization load curve of the system; S2, establishing a source-load-storage coordinated scheduling model with the objective of maximizing new energy consumption quantity and minimizing the system operation cost; and S3, solving the source-load-storage coordinated scheduling model through utilization of improved multi-objective particle swarm optimization, and carrying out computing to obtain the source-load-storage coordinated scheduling method. The method has the advantages of simple realization method and flexible application. Schedulable resources such as power equipment, the user loads and the energy storage equipment in the system can be utilized rationally. The new energy consumption is facilitated, and moreover, operation cost of the system is reduced.

The invention discloses a main-auxiliary power supply automatic switching system and method, and relates to a power switching system and method. A detection module is set for detecting in real time whether the voltage of a main power supply and the voltage of an auxiliary power supply meet the power utilization demands or not. A switching control circuit is used for automatically achieving the switching between the main power supply and the auxiliary power supply, so as to guarantee that a power supply connected with a power utilization system meets a power utilization requirement. Moreover, the system is simple in circuit, is convenient to integrate, employs a cross coupling PMOS switching module, effectively improves the stability of a switching circuit, and further improves the safety of a power switching system and the power supply efficiency of the power switching system.

The invention discloses an energy-storage hydroelectric generation system which comprises an upper pool, a lower pool positioned downstream, a hydroelectric generator and a water pump, wherein a water inlet and a water outlet of the hydroelectric generator are respectively connected with the upper pool and the lower pool; a water inlet and a water outlet of the water pump are respectively connected with the lower pool and the upper pool; the hydroelectric generation system further comprises a control device, and a wind driven generator or / and a solar generator which is / are used for providing electric energy needed by the work of the water pump, wherein the control device is used for controlling the work of the water pump according to the generated energy of the wind driven generator or / and the solar generator as well as the water level of the upper pool. By adopting the embodiment of the energy-storage hydroelectric generation system, as the wind driven generator can be used for providing electric energy needed by the work of the water pump, and the water level of the upper pool is maintained to be more stable, the hydroelectric generator has enough water for generating electricity when in the peak period of electricity consumption, and the electricity consumption demand in the peak period of electricity consumption can be met.

An electric automobile interactive response control method taking distributed power consumption into consideration under a micro power grid is disclosed. The method includes the steps of S1, conducting discretization processing for continuous 24-hour time in one day, S2, recording battery information and client charging demand information of newly added electric automobiles by charge and discharge facilities, setting the initial time as an accessing time, S3, reading load information of the current moment, S4, predicting photovoltaic output, S5, developing a virtual electricity price mechanism based on the photovoltaic output and load supply and demand situation in combination with real time electricity price and inclination blocking probability, S6, converting maximized photoelectric consumption target under the guidance of the virtual electricity prices, solving a target function, and making charging and discharging plan of electric automobiles in a time length T, S7, various electric automobiles conducting power consumption, idling and discharging operation at the current moment according to the control strategy, updating prediction model information and uploading control information, and S8, repeating S3-S7 until all vehicles departing from the charging facility. The photoelectric consumption level is high, and the control effect is good.

The invention discloses a solar energy thermoelectricity co-generation and co-supply system. The solar energy thermoelectricity co-generation and co-supply system is mainly composed of a water system and an electrical power system, which are relatively independent. The main component of the solar energy thermoelectricity co-generation and co-supply system is a solar energy thermoelectricity co-generation component. The structural materials of the component comprise a glass cover plate layer, an air insulation layer, a photovoltaic cell sheet, an EVA adhesive film, a metal absorber plate, a heat exchange tube liquid flow channel, an insulating layer and a packaging base plate from top to bottom. A silica gel spacer supports between the metal absorber plate and the glass cover plate to form the air insulation layer; a high-selectivity heat absorbing coating is sprayed on the metal absorber plate to improve the absorbing efficiency for sunlight. Under the shining of the sunlight, the outermost layer cell sheet uses a photovoltaic effect to transform light energy into electric energy and output to supply power to the outside; longitudinal heat exchange tubes in the metal absorber plate on the lower layer collect energy of the sunlight as solar energy heat collecting tubes and heat generated by the cell sheet heating and transforms the heat into heat of cycle fluid to output, therefore, the energy utilization efficiency is improved to the most extent, and the thermoelectricity co-generation is achieved.

An energy supplying method and an energy balancing-allocating method for producing refuse derived fuel are provided, wherein, the energy supplying method for producing refuse derived fuel comprises: firstly, crude refuse is separated according to different components; secondly, according to separation results, the refuse is fed into corresponding systems for treatment respectively; finally, the energy generated by a refuse fermenting system is supplied to a refuse derived fuel manufacturing system for use. The energy balancing-allocating method is that: according to the surplus conditions of a refuse derived fuel factory in energy use, partial organic refuse originally used for the fermenting system is also used as the raw materials in the production of refuse derived fuel, so as to realize the supply of the fermenting system and the energy balance needed in the production process of refuse derived fuel. The present invention has the advantages that: RDF production cost is reduced; RDF heat value is improved; the amount of biodegradable component used for fermentation can be flexibly adjusted according to the concrete conditions of energy balance.

The invention discloses a non-floating charging type substation direct current power supply system based on an iron lithium battery. The positive output end and the negative output end of a high-frequency switch charging module are respectively connected with a positive pole and a negative pole of a direct current bus; the positive pole and the negative pole of an iron lithium battery group are connected with the positive pole and the negative pole of the direct current bus by a fourth air switch K4; a plurality of output branches are connected in parallel on the positive and negative poles of the direct current bus; a plurality of high-frequency switch charging modules are connected in parallel; each high-frequency switch charging module is connected with a monitor with a model of BMJ-FPC; an insulated monitoring device is connected with the monitor; and the output end of a current transformer (CT) which is arranged on each output branch is connected with the insulated monitoring device. According to the system, the iron lithium battery group realizes hot spare and automatic power supply in a non-floating charging mode, and the system has the characteristics that the service life of power supply equipment is prolonged, the safety performance is improved, and the degree of automation is improved.

The invention discloses a three-terminal isolation type ES (electric spring) topological structure and a control method thereof. A power grid, a critical load and a non-critical load can be effectively isolated, the structure provides security assurance and plays a key promotion role for wide application of an ES to a distributed power generation system, the topological structure is applied to the distributed power generation system and is particularly applicable to small wind power generation and photovoltaic power generation grid-connected systems in residential areas, and fluctuation effects caused by intermittence of new energy resources on power grid voltage can be eliminated from the source. The topological structure can be used as an existing topological structure to transfer fluctuation of input voltage to the non-critical load, help a common user to distribute electric energy of the critical load independently and transmit redundant power to the power grid while meeting the power demand of the topological structure.

The invention relates to a temperature difference and vibration composite piezoelectric energy capture battery, which comprises a battery top cover, an upper battery case, a low battery case, a heat absorbing base, an upper spring, a lower spring, an upper piezoelectric cantilever beam, a lower piezoelectric cantilever beam, a transmission rod, a dish-shaped thermal bimetallic sheet holder and a dish-shaped thermal bimetallic sheet. Wherein the battery top cover, the upper battery shell, the lower battery shell and the heat absorbing base constitute a battery shell part; the upper spring, thelower spring, the upper piezoelectric cantilever beam, the lower piezoelectric cantilever beam, the transmission rod, the dish-shaped thermal bimetallic sheet holder and the dish-shaped thermal bimetallic sheet constitute a piezoelectric power generation part. When the device is vibrated or the heat absorbing base senses the ambient high temperature, reciprocating vibration of the upper and lowerpiezoelectric cantilever beams occurs, which improves the efficiency of energy capture. When the device is arranged in the MEMS device, the requirement for supplying power to the MEMS device can be met, and the device has the advantages of simple structure, strong environmental adaptability, high energy capture efficiency and easy integration.

The invention relates to an LED driver system with an energy storage function. The LED driver system can work in three working modes. In an illuminating mode, input alternating-current power is outputted to a constant-current / constant-voltage outputting AC-DC converter with a power factor correction function to directly power an LED lamp; in a charging mode, the LED lamp stops working, inputted alternating-current power is supplied for a lithium battery pack module via the AC-DC converter, and energy is stored; and in a battery power supply mode, a charged lithium battery management module supplies power for the LED lamp via a constant-current outputting DC-DC converter. The LED driver system further comprises an intelligent switching module, switching among the three modes is realized under the control of a single chip microcomputer, the three modes are guaranteed against being interfered by one another, and normal running of the integral system is guaranteed. The power factor of the LED driver system can be higher than 0.9, the efficiency of the LED driver system is higher than 80%, the LED lamp can be powered continuously for a long time when in power failure, and normal operation of the LED lamp during power interruption is guaranteed.

The invention provides a power generation control method and system of a hybrid vehicle. The method includes the following steps that a SOC value of a power battery of the hybrid vehicle is detcted; the SOC value is compared with a preset power threshold, and an idling power generation mode is entered when the SOC value is less than or equal to the preset power threshold; in the idling power generation mode, an engine of the hybrid vehicle generates electricity to charge the power battery, so that high-voltage accessories of the hybrid vehicle is supplied with the electricity by charging the power battery; and the generation power level of the engine is adjusted according to the power of the high-voltage accessories, and each generation power level corresponds to preset generation power. According to the power generation control method and system of the hybrid vehicle, the generation power level of the engine is adjusted according to the power of the high-voltage accessories, so that the power demand of the high-voltage accessories can be met, and the power battery can be charged; and the battery capacity problem under the idling condition is considered, the power consumption of the high-voltage accessories is considered, and the control accuracy under the condition is improved.

The invention discloses a rapid dust falling device and method for tunnel construction. The rapid dust falling device comprises a first dust falling device and a booster pump which are installed on atunnel excavating trolley, and a second dust falling device, an air-conveying dust falling device, an electronic control device, a magnetic valve, a high pressure water pump and a water tank which areinstalled on a moving trolley; dust concentration sensors are separately installed on the moving trolley and the tunnel excavating trolley; the booster pump, the magnetic valve, the high pressure water pump, a motor of the air-conveying dust falling device and the dust concentration sensors are all connected with the electronic control device; inlets of the booster pump and the high pressure water pump communicate with the water tank, the magnetic valve is arranged at the outlet of the high pressure water pump, and a second dust falling device and the air-conveying dust falling device are separately connected with the outlet of the magnetic valve; and the outlet of the booster pump is connected with the first dust falling device through a pipeline. According to the rapid dust falling device and method for the tunnel construction, two dust falling barriers are formed close to a tunnel face, and the water spray time of dust falling is automatically adjusted according to the difference of dust concentration, so that the dust falling efficiency is improved, water resources are saved, the waiting time for the dust falling is shortened, and the progress of the tunnel construction is accelerated.

The invention relates to a special phosphorus burning tower, which includes a steam drum, an annular membrane water wall assembly, a phosphorus burner and a water vapor circulating pipeline. The upper end and the lower end of the annular membrane water wall assembly are respectively provided with an upper header subassembly and a lower header subassembly. The upper header subassembly comprises an annular upper header and a conical upper head, the top or side wall of which is provided with a process gas outlet pipe. The lower header subassembly includes an annular lower header and a lower head. The thermal-process phosphoric acid production heat-electricity self-balancing system includes the special phosphorus burning tower, a hydration system and an extraction condensing type steam turbine generator unit. The special phosphorus burning tower provided in the invention ensures that the strength requirement can be satisfied under the conditions of enhanced steam pressure and temperature and the temperature of a reaction tower inner wall surface is controlled at an allowable temperature at the same time, so that corrosion by high temperature process gas can be avoided, and the special phosphorus burning tower can be ensured to generate a medium-pressure steam by-product and can operate safely and reliably for a long term. Meanwhile, the medium-pressure steam by-product of the special phosphorus burning tower is introduced into the extraction condensing type steam turbine generator unit, thus realizing maximum energy utilization.

The invention discloses an educational toy capable of improving the reaction speed of children. The educational toy comprises a first box body, a transparent glass made of resin is embedded in the front surface of the first box body, a switch is embedded and installed at the upper left corner position on the front surface of the first box body, a labyrinth lattice is fixedly arranged on the innerside of the first box body, and a small ball outlet is arranged at the tail end position of the labyrinth lattice on the inner bottom end of the first box body. The invention is novel in design, the labyrinth is made up of a number of crisscrossing strips and a wheel that changes the direction of the ball, at each junction there are two and several exit, however, there is only one route to connectcorrectly. Once the ball deviates from the correct path, it will need to be reoperated to make the ball return to the correct path, which will affect the overall passing speed. This method can trainchildren's hand-eye-brain coordination ability and overall reaction speed, and promote children's divergence of thinking.

The invention discloses a hybrid commercial vehicle electrical system using solar energy and waste gas waste heat power generation, and belongs to the field of electric control of commercial vehicles.The system comprises: a first power generation unit, wherein the first power generation unit comprises a BSG motor and a solar cell, the BSG motor is connected with a crankshaft pulley of an engine through a belt, the BSG motor is electrically connected with a first storage battery, and the solar cell is provided with a first DCDC converter; and a second power generation unit, wherein the secondpower generation unit includes an intelligent generator and a waste gas waste heat power generation device, the intelligent generator is connected with the crankshaft pulley of the engine through a belt, the intelligent generator is electrically connected with the second storage battery, the waste gas waste heat power generation device is provided with a second DCDC converter, a third DCDC converter is connected to the first storage battery and the second storage battery, and the first storage battery charges the second storage battery through the third DCDC converter. Energy saving of a wholevehicle system is achieved, so that the purposes of reducing the load of the engine and saving oil of the whole vehicle are achieved, and the fuel economy and the power performance of the engine areimproved.

The invention provides an intelligent monitoring system for multiple operation states of a switch cabinet of a transformer substation. The system comprises an MCU, and a local discharge sensor, a temperature sensor, a humidity sensor, a voltage sensor, a current sensor, a power module, a FLASH memory, a Bluetooth module, an RS485 module and a GPRS module which are connected to the MCU. The invention further provides an intelligent evaluation method for the multiple operation states of the switch cabinet of the transformer substation. The evaluation method adopts fuzzy and evidence reasoning fusion, the intelligent evaluation is carried out on the multiple operation states of the switch cabinet according to multiple parameters, and an intelligent evaluation system for the multiple operations states of the switch cabinet, which corresponds to the evaluation method, is embedded into the MCU. According to the system and the method, the operation state inside the switch cabinet can be monitored online, the operation state of the switch cabinet is intelligently evaluated in real time, and the characteristics of high sensitivity and convenience for installation are provided, so that the reliability of power supply can be guaranteed, the timeliness of electricity utilization of a power user can be ensured, and the electricity consumption requirement of the user is met, and thus the management level of safe production of a power grid enterprise is improved.

The invention relates to a small-scale municipal sludge and household waste synergetic incineration treatment method. The small-scale municipal sludge and household waste synergetic incineration treatment method comprises a municipal sludge incineration system, a household waste synergetic treatment system, a waste heat recycling device and a smoke purifying system. The municipal sludge incineration system comprises a sludge feeding device, a sludge drying machine and a sludge incineration device which are sequentially connected in series. The household waste synergetic treatment system comprises a waste feeding device and a waste pyrolysis gasification furnace which are connected in series. The gas outlet end of the waste pyrolysis gasification furnace communicates to the sludge incineration device, and generated pyrolysis gasification gas is introduced into an assistant combustion device through a draught fan. The waste heat recycling device is a waste heat boiler, the waste heat boiler is used for generating steam by heating boiler feed water, the steam communicates with a turbine generator set, the turbine generator set utilizes the steam generated by the waste heat boiler through absorbing heat to generate electricity, the electricity is used for auxiliary power supply supplementation of the municipal sludge incineration system and the household waste treatment system. First-grade exhausted steam of the turbine generator set is conveyed into the sludge drying machine to be used as a heat source for drying the sludge. The smoke generated after sludge incineration is processed by the smoke purifying system and is discharged after reaching standards.

The invention discloses an automatic generation system for a power supply scheme of a modern power distribution network. The automatic generation system comprises a power supply scheme automatic generation management module, a power supply capacity release management module, a newly added load plan management module, a feeder line equipment management module, a power supply region management module, an information publication management module and a system management module. The automatic generation system for the power supply scheme of the modern power distribution network can rigidly execute main planning technology principles of the power distribution network and division of power supply regions, perform analysis in combination with power consumption capacity of users in a recent period and a long period and meet not only development planning requirements of the power distribution network but also power consumption demands of the users, has the best comprehensive economic benefits and can effectively solve problems of damaged grid structures, disordered power supply regions and the like caused by disordered access due to subjectivity and randomness of manual programming, and the automatically generated power supply scheme is more reliable, reasonable and scientific.

The invention discloses a wind-solar hybrid power generation system. The wind-solar hybrid power generation system has the advantages that alternating currents are generated by a wind-driven power generator, and fixed voltages can be effectively outputted by a rectifier and a DC / DC power converter; solar energy is converted into direct currents by a photovoltaic array under a photovoltaic effect, and fixed voltages can be effectively outputted by a second DC / DC power converter; the direct currents generated by the DC / DC power converters are supplied to a direct-current load, or can be converted into alternating currents by an inverter, and the alternating currents can be supplied to an alternating-current load; surplus electric energy can be stored by a storage battery if the surplus electric energy is available after electric energy which is outputted by the wind-driven power generator and the photovoltaic array is supplied to the direct-current load and the alternating-current load; power can be supplied to the direct-current load and the alternating-current load by the storage battery when requirements of the direct-current load and the alternating-current load cannot be met by insufficient electric energy which is outputted by the wind-driven power generator and the photovoltaic array; the wind-solar hybrid power generation system can generate stable main output power by the aid of solar energy and wind energy hybrid characteristics, and accordingly the stability and the reliability of the wind-solar hybrid power generation system can be improved.

The invention provides a servo power supply which is applied to an electromechanical servo system and belongs to the electromechanical field. The servo power supply source comprises a lithium battery pack (1) and a power supply management unit (2). The power supply management unit (2) is composed of a main control unit (2.1), a monomer voltage detection unit (2.2), a battery equalization management unit (2.3), a battery thermal management unit (2.4) and a peak compensation unit (2.5). The lithium battery pack (1) provides a power supply required by the electromechanical servo system. The power supply management unit (2) carries out peak current compensation and regeneration energy absorption, and carries out system management and equalization on the lithium battery pack (1). The servo power supply provided by the invention can work for a long time, can be reused, has the advantages of large capacity, high reliability, low cost and small volume, can absorb regeneration energy, can carry out large pulse discharge, and is especially suitable for an aerospace servo power supply system.

The invention relates to a waterproof photovoltaic assembly, a solar roof or ceiling formed by the same. The waterproof photovoltaic assembly comprises a photovoltaic panel and a frame body; the edge of the photovoltaic plate is wrapped in the frame body; a mother frame bar and a daughter frame bar are combined with each other so as to form the frame body; the top of a first installation groove of the daughter frame bar is provided with a protruding strip; the top of a second installation groove of the mother frame bar is provided with a cover strip; the cover strip is provided with a buckling groove which is matched with the protruding strip; the solar roof or ceiling includes a supporting frame and a board or building ceiling which is formed through embedding a plurality of waterproof photovoltaic assemblies; and the protruding strip of the daughter frame bar is buckled into the buckling groove of the mother frame bar, so that two adjacent waterproof photovoltaic assemblies can be connected together. The waterproof photovoltaic assemblies can be arranged in an embedding manner so as to form the roof or ceiling with excellent waterproof performance. The solar roof or ceiling can be directly adopted as common roofs including roofs of houses or factories or ceilings of buildings, and has wind, rain and sun shading functions and can convert solar energy into electrical energy.

The invention relates to an environment-friendly energy-saving multifunctional cleaning machine and belongs to the technical field of multifunctional energy-saving cleaning equipment. The environment-friendly energy-saving multifunctional cleaning machine is provided with a cleaning machine body, guardrail cleaners, an ozone generator, an electric cleaning brush, a high-pressure water gun and an automatic high-pressure atomizer. The environment-friendly energy-saving multifunctional cleaning machine is characterized by being provided with the guardrail cleaners, the automatic high-pressure atomizer and the ozone generator, the guardrail cleaners are arranged on the side faces of the cleaning machine body, and the ozone generator is arranged in the cleaning machine body; the cleaning machine body is provided with a shell, one side of the shell is provided with wheel travel mounting rails of the guardrail cleaners and the multifunctional cleaner, and the guardrail cleaners and the cleaning machine body are connected through the wheel travel mounting rails. The environment-friendly energy-saving multifunctional cleaning machine has the advantages of being environment friendly and energy saving and realizing efficient cleaning of guardrails, greening rails, public transit facilities, outdoor low-altitude facilities, community show and propaganda facilities and automobiles as well as nursery agent spraying and indoor ozone sterilization by means of replacing functional application components.

The invention relates to a vibration and temperature difference compound piezoelectric energy harvesting battery, and the battery comprises: an upper battery shell, a lower battery shell, an upper spring, a lower spring, an upper piezoelectric cantilever beam, a lower piezoelectric cantilever beam, a transmission shaft, a dish-shaped thermal bimetal sheet and a cooling tower; wherein the upper battery shell senses energy in external environment and transmits to the dish-shaped thermal bimetal sheet to enable the sheet to transform downwards at a critical temperature point, the transmission shaft is driven to move downwards, the upper piezoelectric cantilever beam is released, vibration is generated, the lower piezoelectric cantilever beam is shocked, and vibration is generated under the action of the lower spring. When the dish-shaped thermal bimetal sheet is cooled by the cooling tower, the transformation is recovered, the transmission shaft moves upwards, and the upper and the lower piezoelectric cantilever beams vibrate again. According to the invention, the device generates electricity by utilizing environmental vibration, when the device is used for MEMS equipment, power supply requirement of the MEMS equipment can be satisfied, and the device has advantages of simple structure, strong environment adaptability, high energy harvesting efficiency, easy integration and the like.