204results about How to "Improve energy utilization" patented technology

The embodiment of the invention discloses a heating method of parallel battery packs, electronic equipment and an energy storage system. The method comprises the steps of detecting a connection state of an external power supply and a parallel battery pack; when it is detected that the external power supply is connected, whether all slave battery packs in the parallel battery packs have heating requirements or not is judged; a plurality of heating gears are preset from the battery pack, each heating gear corresponds to one heating power, and the heating gears are sequenced according to the heating power; according to a preset priority, a heating instruction is sent to the to-be-heated battery pack, so that the to-be-heated battery pack is heated; switching a heating gear of the to-be-heated battery pack based on the relationship between the feedback data of the to-be-heated battery pack and the input energy of the external power supply; after adjustment of the heating gear is completed, heating is conducted for preset time; and after heating is completed, the steps are circulated. According to the embodiment, the slave battery pack is controlled through the main battery pack, the heating gear is dynamically adjusted, and the heating efficiency and the energy utilization rate of the battery pack can be improved.

The invention belongs to the field of industrial control and computer data security, and particularly relates to a millisecond-level power failure data protection system for an industrial control panel. The invention discloses a millisecond power failure data protection system for an industrial control panel. The millisecond power failure data protection system comprises a core processing component, a real-time synchronous shadow memory component, a bus voltage monitoring component, a pre-entropy reduction logic control component, a nonvolatile storage component and a flight control bus arbitration component. The bus voltage monitoring assembly monitors a voltage drop trend and performs early warning, the pre-entropy reduction logic control assembly calculates a minimum data survival set according to energy entropy, the real-time synchronous shadow memory assembly constructs a synchronous shadow control domain and atomizes data, and the flight control bus arbitration assembly compulsively takes over a bus and freezes processor access at the moment of power failure. Atomized writing of data into the nonvolatile storage component is guaranteed. According to the invention, zero-delay data protection and millisecond-level hot start recovery at the moment of power failure are realized, and the data security and reliability of the industrial control equipment in a severe environment are enhanced.

The invention belongs to the technical field of tunnel construction, and particularly relates to tunnel new energy operation equipment and an energy consumption control method thereof.The tunnel new energy operation equipment comprises a crawler chassis, the crawler chassis is driven by a motor, an electric telescopic arm is fixedly installed on the surface of the crawler chassis, and an external cable is slidably connected to the inner wall of the electric telescopic arm; the external cable is used for being connected with a power grid to provide electric energy for operation equipment. According to the tunnel new energy operation equipment and the energy consumption control method thereof, by arranging the energy storage driving control mechanism and the rotary conductive mechanism, seamless switching and 360-degree continuous rotation operation of the equipment in a power grid direct supply mode and a battery power supply mode are achieved when the equipment is used, and waste gas pollution in a tunnel is fundamentally eliminated. The system has the characteristics of zero emission, low noise and high energy utilization rate, the direct electric charge and ventilation energy consumption are remarkably reduced, the comprehensive energy consumption is reduced, and a brand new green and efficient equipment solution is provided for tunnel construction.

This invention provides a method, device, and computer-readable storage medium for auxiliary braking of a motor vehicle, comprising: determining a target braking gear for a first auxiliary braking device that does not have kinetic energy recovery function when the auxiliary braking conditions are met; selecting an actual braking gear for any first auxiliary braking device based on the maximum braking power corresponding to each candidate braking gear; wherein the candidate braking gear level is not higher than the target braking gear, and the sum of the maximum braking power corresponding to the candidate braking gear and the maximum braking power of a second auxiliary braking device with kinetic energy recovery function is not less than the maximum braking power corresponding to the target braking gear; controlling each first auxiliary braking device to brake at its corresponding actual braking gear, so that the motor vehicle brakes with a total power not less than the target braking power; wherein, if the actual braking gear of a first auxiliary braking device is not the target braking gear, the second auxiliary braking device assists braking with a non-zero power.

This invention relates to the field of industrial wastewater treatment technology, and discloses an electrocatalytic oxidation device and its operating method for treating saline industrial organic wastewater. Wastewater enters the reaction chamber through the bottom inlet, is forced through the anode channels, and undergoes an electrochemical oxidation reaction on the anode surface to convert chloride ions into hypochlorous acid. A vacuum ultraviolet light source performs in-situ photolysis of water molecules and hypochlorous acid, exciting various active species, including strongly reducing hydrated electrons, strongly oxidizing hydroxyl radicals, and chloride radicals. This device, through the construction of a reduction-oxidation system, can efficiently degrade various pollutants with both electron-rich and electron-deficient characteristics. This invention utilizes the synergistic coupling of electrochemical generation and photochemical conversion to convert high-concentration chloride ions into active precursors, effectively overcoming the bottlenecks of low degradation efficiency and poor selectivity in traditional technologies for high-salt and complex water quality, and significantly improving the system's mineralization efficiency and energy utilization rate.

This invention relates to the field of industrial unmanned aerial vehicle (UAV) technology, specifically a hydrogen fuel cell and lithium battery hybrid UAV. The UAV includes a fuselage, a high-pressure hydrogen storage tank fixedly mounted on top of a gas cylinder mounting base, a battery stack mounted on the bottom of a mounting frame assembly, and a circuit control module located inside the mounting frame assembly. This hydrogen fuel cell and lithium battery hybrid UAV, based on multi-source data fusion and a sliding window anti-disturbance design, achieves accurate identification of all operating conditions, including steady-state cruise, high-power transients, surplus recharge, and regenerative braking. It is equipped with a differentiated intelligent power allocation algorithm, enabling a dynamic allocation strategy that allows for continuous and stable main power supply from the fuel cell during cruise, coordinated lithium battery replenishment during high-power conditions, and real-time recharge of the lithium battery with surplus power. Through a power change rate feedforward compensation design, it maximizes the utilization of the high energy density of hydrogen energy while simultaneously achieving energy recovery and reuse, further improving the system's energy utilization rate.

The invention discloses an aerosol generating product and an aerosol generating system.The aerosol generating product comprises an aerosol forming base material sheet and a magnetic heating body sheet, and the magnetic heating body sheet and the aerosol forming base material sheet are arranged in a stacked mode in the thickness direction and attached in the stacked area in a surface contact mode; the main heat conduction path directed from the magnetic heating element sheet to the aerosol-forming substrate sheet is a path passing through the thickness direction of the laminated region. Compared with the prior art, the magnetic heating body sheet and the aerosol forming base material sheet are laminated along the thickness direction, and the surface contact is realized in the lamination area, so that the main conduction path of heat from the magnetic heating body sheet to the base material is a short path passing through the lamination thickness direction; therefore, heat conduction distance is shortened, interface thermal resistance is reduced, and heating response speed and energy utilization rate are improved. And meanwhile, the base material is heated more uniformly, so that the aerosol generation efficiency and consistency are improved, and the risk caused by local overheating is reduced.

This utility model discloses a cold-rolled steel strip cutting device, relating to the technical field of cutting equipment. The device includes a cutting box, inside which a cutting driven shaft is movably connected via bearings. A cutting blade is mounted on the top of the cutting box, a drive box is located on one side of the cutting blade, a straightening box is fixedly connected to one side of the cutting box, and an uncoiler is fixedly connected to one side of the straightening box. A grinding assembly is mounted on the top of the cutting blade. This utility model achieves online real-time blade edge maintenance by integrating a hydraulically driven grinding assembly and an atomizing cooling assembly. During equipment operation, a hydraulic cylinder pushes eleven symmetrically distributed grinding plates to synchronously grind the cutting blade in both directions, eliminating the need to stop the machine to disassemble the blade. Combined with the inclined design of the cooling groove and the spraying of atomized coolant, heat dissipation is achieved quickly, and grinding debris is absorbed. This design extends the continuous operation time of the equipment, reduces the frequency of downtime maintenance, and significantly improves production capacity and equipment utilization.

The application discloses a heat preservation method and device of a vehicle power battery, electronic equipment and a storage medium. The method comprises the following steps: obtaining a battery state parameter of a power battery of a vehicle and an environment condition parameter of an environment in which the vehicle is currently located; determining a target battery heat preservation strategy from a preset battery heat preservation strategy set based on the battery state parameter and the environment condition parameter, wherein the preset battery heat preservation strategy set comprises a plurality of battery heat preservation strategies, and the preset battery heat preservation strategy set at least comprises a first battery heat preservation strategy, and the first battery heat preservation strategy is used for indicating that a heat-electricity conversion device is driven by electric energy obtained by a new energy equipment to perform heat preservation on the power battery; and performing heat preservation on the power battery based on the target battery heat preservation strategy. The application solves the technical problems that the power battery is excessively consumed in heat preservation in the related art, and the energy utilization rate is low.

The invention discloses an intelligent laser system with an energy-saving function. The intelligent laser system comprises a color detection device, a height measurement device, a laser generation device, a temperature detection device, a conveying device and a controller. According to the device, edge sealing belts with different colors can be detected through the color detection device, edge sealing belts with different heights are measured through the measuring device, and meanwhile, the controller controls the output power of the laser generating device and the size of light spots in real time according to the conveying speed of the conveying device; when the laser generating device outputs laser to process the edge sealing band, the controller detects the temperature of the laser irradiation area through the temperature detection device and adjusts the output power and the light spot size of the laser generating device to form closed-loop control, so that the edge sealing bands with different colors and heights can be processed by proper output power and light spots, and the processing efficiency of the edge sealing band is improved. And a proper processing temperature is achieved, so that higher processing quality is obtained.

The utility model discloses an axial flow heat radiation servo motor, comprising a casing provided with a cover, the cover is provided with a plurality of air holes, and the casing is rotatably connected with a rotating shaft; the stator assembly is in a circular ring shape and is connected into the machine shell. The rotor assembly is connected to the rotating shaft, the stator assembly surrounds the rotor assembly, and an annular air gap is formed between the rotor assembly and the stator assembly; and the cooling fan comprises an end seat and a plurality of fan blades, the end seat is in a circular ring shape, the end seat is connected to the end part of the rotor assembly, all the fan blades are distributed along the circumferential surface of the end seat, the fan blades are overlapped with the air gaps, the fan blades are overlapped with the air holes, the fan blades are bent towards the extension direction of the rotating shaft, and the fan blades are in central symmetry about the rotating surface of the end seat. The heat dissipation device is compact and reliable in structure, heat dissipation cost can be effectively saved, pertinence of fan blade operation heat dissipation is high, the energy utilization rate is high, heat dissipation efficiency is high, operation stability is high, and stable heat dissipation under the bi-directional rotation working condition can be guaranteed.

This invention relates to the field of condensate recovery technology, specifically a closed-loop condensate recovery device, comprising a tank with a water outlet pipe at the bottom. The tank is divided into three zones—a central steam buffer zone, a lower condensate collection zone, and an upper negative pressure condensation zone—by two horizontal baffles. This closed-loop condensate recovery device eliminates the need for additional power components such as pumps. It relies on the downward pressure difference of the condensate in the negative pressure condensation zone and the negative pressure generated by steam condensation as the drainage driving force. It fully utilizes the system's own energy, eliminating dependence on external power and significantly reducing operating energy consumption. The condensate introduced by the downward pressure drainage pipe creates a downward impact, which, combined with the negative pressure introduced by the negative pressure venting pipe, forms a dual drainage drive, providing stronger power and higher efficiency than traditional single gravity drainage. Simultaneously, it drives the condensate in the pipe to repeatedly flush, comprehensively covering the entire pipe area and thoroughly removing impurities and silt from different sections, offering better anti-clogging performance than unidirectional disturbance.

The invention belongs to the technical field of metal explosive cladding manufacturing, and discloses an explosive welding initiating explosive forming mold, an initiating explosive column and an explosive welding method. The mold comprises a pipe body and a cone assembled in the pipe body. The top end of the cone is upward, and a gap is reserved between the bottom face of the cone and the lower end face of the tube body, so that an upper columnar charging cavity and a lower conical energy gathering cavity are formed in the tube body. By means of the simple split design, traditional manual explosive pit digging operation is converted into a standardized process, the energy-gathered initiating explosive column with the highly-consistent shape, size and explosive loading amount is prepared, personal errors are thoroughly eliminated, and repeatability of initiation energy is guaranteed. And meanwhile, the bottom energy gathering cavity structure is beneficial to improving the energy utilization rate, and is particularly suitable for explosive welding of the multi-layer metal plate with the medium thickness. The device has the remarkable technical advantages of simple structure, low cost, time-saving operation, safety, high efficiency, batch production and the like.

The utility model belongs to the technical field of household appliance accessories, especially relates to an energy -conserving dish -washer heater, including heater installation flange, electric heating tube and heat -insulating support, heater installation flan includes the inner surface of contact with liquid, the outer surface opposite with inner surface and the interface of being located at the demarcation of inner and outer surface, electric heating tube includes heating section, non -heating section and end, and the both sides of heating section are connected with end through non -heating section respectively, and the end of electric heating tube penetrates the interface of heater installation flange and extends to the outer surface. The utility model adds heat -insulating support between the heating section of electric heating tube and the inner surface of heater installation flange, so that electric heating tube is not directly welded to heater installation flange, so that heat does not directly escape to air through the welding part, improves dish -washer heater energy utilization, and more heat directly heats liquid, and a small part is scattered.

The application belongs to the technical field of vehicle electric drive, and provides a main-aid collaborative double-motor electric drive axle configuration and a control method thereof, and the technical scheme comprises a gear shaft system matched with a main motor and comprising at least one first synchronizer, a gear shaft system matched with an auxiliary motor and comprising at least one second synchronizer; each three-stage planetary gear set reduction gear shifting mechanism comprises at least one third synchronizer and one planetary gear reduction mechanism, a gear shifting fork is arranged on each first synchronizer, second synchronizer and third synchronizer, and the gear shifting fork is connected to a controller; in each driving mode, a corresponding motor driving control strategy is adopted to output a driving torque distributed by a motor; based on the output driving torque distributed by the motor and a gear shifting switching strategy, the gear shifting forks of the synchronizers are switched to realize multi-gear shifting. On the premise of compact overall arrangement, system efficiency optimization is ensured in the whole working condition range.

The application belongs to the field of medical materials, and particularly relates to a metal core enhanced double-barrier piezoelectric nano system and a preparation method and application thereof. The preparation method comprises the following steps: first, a core-shell structure of'metal@mesoporous titanium dioxide@mesoporous barium titanate' is prepared through a step-by-step reaction, and then the target nanoparticles are obtained through lipid wrapping. The system innovatively constructs a double-barrier structure, can self-trigger active oxygen under a physiological pressure of 4 mmHg, realizes endogenous pressure self-driven treatment of malignant ascites, has the advantages of low pressure, high catalytic efficiency, long-term structural stability and good biocompatibility, solves the problems that existing treatment methods are highly invasive and depend on exogenous stimulation, and provides a new safe and efficient technical scheme for the treatment of malignant ascites.

This invention relates to a temperature control device for a battery pack in a new energy bus, comprising a battery box, several module boxes arranged side-by-side in the middle of the inner side of the battery box, several battery cells arranged side-by-side in the module boxes, a heat spreader plate embedded in one inner wall of one side of the module box, several heat exchange tubes embedded inside the module box and abutting against the heat spreader plate, an insulation tank on one side of the outer side of the battery box, a heat exchanger on one side of the insulation tank, and an air conditioner on one side of the heat exchanger. The air conditioner is connected to the heat exchanger and the insulation tank respectively through refrigerant pipes. A water pump is installed at one end of the insulation tank. In winter or low-temperature environments, it collects heat from the air, heating the water in the insulation tank to hot water. In summer or high-temperature environments, it releases heat to the air through the heat exchanger and cools the water in the insulation tank to cold water, so that the battery cells can be maintained between 20 and 30 degrees Celsius in various temperature environments, so that the working efficiency of the battery cells can be optimized.

The application relates to a force couple balance and longitudinal array push-pull vertical take-off and landing high-speed aircraft, belonging to the technical field of aircrafts, which comprises a fuselage, a rotor, a fixed wing, a steering controller and a propeller. The rotor is installed at the top of the middle part of the fuselage through a rotor shaft, and a clutch is arranged between the rotor and a power system and / or a transmission system matched with the fuselage, so as to be controlled to be disconnected or to transmit power to the rotor. The steering controller comprises a fixed base and a rotating base, and each of the nose and the tail has a set of the rotating base. The propeller is provided with two propellers which are respectively installed on the rotating bases of the nose and the tail, and are controlled to rotate with the rotating bases relative to the fixed base. The force couple formed by the front and rear thrust vectors is used to balance the reverse torque brought by the rotor. When the propeller is coaxial with the middle axis of the fuselage, the wind area of the single propeller obtains double thrust. The application can improve the energy utilization rate, improve the carrying capacity, improve the flight safety performance and obtain a longer hovering time.

The invention discloses a temperature control method for processing graphite by using double plasma sources, and relates to the technical field of plasma material processing, in particular to a temperature control method for processing graphite by using double plasma sources, which comprises the following steps: adopting a cylindrical reactor, and arranging a plasma source I and a plasma source II up and down along the axial direction on two sides of the cylindrical reactor, and an outlet of the powder feeding mechanism directly faces a core high-temperature area of the plasma source I, so that graphite powder directly enters a heating area. The two sources are connected in series up and down to construct a continuous relay type high-temperature path. The center distance between the powder feeding port and the source I is limited not to exceed half of the outlet diameter of the reactor, the center distance between the two sources is 1-2.5 times of the outlet diameter, and the center distance between the source II and the outlet is larger than 5 times of the diameter; the flow of the second source is 1.2-1.8 times that of the first source, the temperature of the core area is maintained to be 8000-10000 K by adjusting the flow ratio, and the total power does not exceed 100 kilowatts. The total retention time of the graphite powder in a two-source high-temperature area is longer than 0.2 second, the diameter of an outlet of the reactor is 100-400 mm, the reactor is made of high-temperature-resistant stainless steel or graphite, and accurate control over the graphite treatment temperature is achieved.

The application relates to the technical field of refrigerated water equipment, in particular to a refrigerated water equipment which comprises a refrigerating part, a refrigerated water path, a sterilization water inlet path, a heat exchange water path and a sterilization valve, the refrigerating part is provided with a refrigeration part and a heating part; the refrigerated water path is in heat conduction connection with the refrigeration part, the refrigerated water path is used for preparing cold water and outputting the cold water into a cold water outlet channel; the sterilization water inlet path is connected with the refrigerated water path after passing through the heating part; the heat exchange water path is connected with the sterilization water inlet path and is in heat conduction connection with the heating part; and the sterilization valve is connected in the sterilization water inlet path. Compared with the prior art, the heat exchange water can be used for sterilization of the refrigerated water path, the heat exchange water can effectively take away the heat from the heating part, and the refrigerated water path can be cleaned to guarantee the water quality of the cold water output by the refrigerated water equipment.

This application discloses a blast furnace blower power generation system, including a blower, a blast furnace, a first venting tower, a power generation unit, and a second venting tower. The blower supplies cold air; the blast furnace is connected to the blower, and at least one first valve is provided between the blast furnace and the blower to regulate the flow rate of the cold air flowing into the blast furnace; the first venting tower is connected to the blower, and at least one second valve is provided between the first venting tower and the blower to regulate the flow rate of the cold air flowing into the first venting tower; the power generation unit is connected to the blower, and at least one third valve is provided between the power generation unit and the blower to regulate the flow rate of the cold air flowing into the power generation unit; the second venting tower is connected to the outlet of the power generation unit, and at least one fourth valve is provided between the second venting tower and the power generation unit to regulate the flow rate of the air flowing into the second venting tower. This solves the technical problem of large energy loss in existing blast furnace systems.

The present application relates to the technical field of industrial unmanned aerial vehicle application and intelligent scheduling, and particularly discloses an unmanned aerial vehicle highway inspection task intelligent planning management system, which comprises a task input module, an intelligent planning engine, a task execution management module, a data hub and a feedback optimization module; the task input module receives and checks and analyzes inspection task requirements and highway basic information; the intelligent planning engine decomposes task priorities based on highway multi-dimensional attributes, dynamically allocates unmanned aerial vehicle resources and generates an optimal path meeting multiple constraints; the task execution management module issues adaptive instructions, monitors unmanned aerial vehicle states and processes inspection data; the data hub uniformly stores whole-process data; and the feedback optimization module optimizes a decision model based on historical data. The present application improves inspection planning accuracy and resource utilization, guarantees data quality, realizes self-evolution and ensures efficient and reliable highway inspection.

The invention relates to a grinding tool mechanism for a high-precision numerically-controlled machine tool guide rail grinding machine, and belongs to the field of numerically-controlled machine tools. The tool mechanism comprises a machine tool, a guide rail arranged on the machine tool in a sliding mode in the transverse direction and a grinding knife arranged above the guide rail. A mounting seat is arranged on the guide rail; a first clamping piece is rotationally arranged on the mounting seat; an arc-shaped groove is formed in the first clamping piece; a plurality of clamping blocks are arranged in the arc-shaped groove in a sliding manner; a clamping groove for accommodating the plurality of clamping blocks is formed in the mounting seat; the clamping grooves and the arc-shaped grooves are arranged in a staggered mode. A clamping seat is arranged on the mounting seat in a sliding manner; a second clamping piece is rotationally arranged on the clamping seat; the inclined workpiece clamping device has the technical effect of improving the inclined workpiece clamping stability.

The invention relates to a hydrogen-electricity energy turbine hybrid propulsion engine system, which relates to the technical field of engines, and is characterized in that a motor driven by a hydrogen fuel cell and a hydrogen fuel gas turbine engine are connected in parallel by using a gear transmission unit, and the gear transmission unit has three switchable transmission modes; the propulsion structure establishes a transmission relationship with the motor and a power turbine of the hydrogen fuel gas turbine engine at the same time through a first transmission mode; the propelling structure only establishes a transmission relation with the motor through the second transmission mode; the propulsion structure establishes a transmission relationship only with the power turbine of the hydrogen fuel gas turbine engine through a third transmission mode. At least one of the hydrogen fuel gas turbine engine and the hydrogen fuel cell can be selectively used, so that the response speed of the engine system is increased, and infrared characteristics and noise of the engine system are reduced.

The utility model belongs to the technical field of industrial wastewater treatment, and particularly relates to a steam stripping dephenolization system, which comprises a steam stripping section positioned at the upper section of a closed tower, and a plurality of water collecting tanks arranged below the steam stripping section; the regeneration section is positioned at the lower section of the closed tower, and a steam channel is arranged below the regeneration section; the spraying system comprises a spraying assembly I, a spraying assembly II and a spraying assembly III; the spraying assembly I is positioned above the steam stripping section and is connected with the preheater through a pipeline; the spraying assembly II is positioned above the regeneration section; and the spraying assembly III is positioned in the filler layer of the regeneration section.

The invention discloses a battery pack repair control method and system. The method comprises the following steps: after a battery pack enters a floating charge state, standing for a fixed time, and acquiring voltage information of each battery in the battery pack; determining a repair triggering condition according to each piece of voltage information; when the repair triggering condition is determined, identifying a repaired No. i battery corresponding to the lowest battery information, and judging whether the repair frequency of the repaired No. i battery is smaller than a corresponding preset frequency or not; and if yes, the charging power supply repairs the battery i and returns to the fixed standing time, and each piece of voltage information of each battery is obtained until the number of repairs of the battery i is larger than the corresponding preset number of times. According to the scheme, the energy utilization rate in the battery pack repairing process is improved in the floating charge state, and meanwhile the battery pack repairing efficiency and repairing reliability are improved.

The present application belongs to the technical field of laser communication, and particularly relates to an optical-mechanical system for coaxial full-duplex wireless laser communication. The laser emitted by a 1550nm laser is modulated by a laser modulator, enters a collimating and expanding lens group for collimating and expanding, and is emitted to a target in the backward space after being reflected by a double-plane mirror group. The spatial light reflected by the target is converged by a Cassegrain telescope system, the converged spatial light is filtered of background stray light by a 1550nm filter, the spatial light filtered of the background stray light is received by a detector and converted into an electric signal. The laser beam emitted to the backward space after being reflected by the double-plane mirror group is coaxially arranged with the spatial light incident to the Cassegrain telescope system, and the spatial pointing consistency of the receiving and transmitting light paths is realized. The assembly tolerance requirement is reduced, and the assembly convenience and engineering realizability of the system are ensured.

The invention provides a lithium manganate positive electrode material and a preparation method thereof, a positive plate and a battery, and belongs to the technical field of batteries, the structural general formula of the lithium manganate positive electrode material is Li1 + xMyMn2-(x + y) O4, x is greater than or equal to 0.1 and less than or equal to 0.33, y is greater than or equal to 0.005 and less than or equal to 0.01, M comprises at least one of Co, Ni, Cr and Fe, and the 111 crystal face diffraction peak intensity I111 of the lithium manganate positive electrode material is greater than 3100. According to the lithium manganate positive electrode material, the energy density, the effective gram volume and the structural stability of the lithium manganate positive electrode material, especially the performance of the lithium manganate positive electrode material in a low-voltage range of 2.0-3.3 V, are improved through lithium enrichment, doping of a proper proportion of M elements and synergistic cooperation of 111 crystal face diffraction peak intensity of the lithium manganate positive electrode material, so that the energy density, the effective gram volume and the cycling stability of the battery are improved, and the battery performance is improved. The battery service life is prolonged.

The invention provides a permanent magnet synchronous motor for flywheel energy storage, and belongs to the technical field of motor rotor structures. The stator sleeves the rotor, and an air gap is arranged between the stator and the rotor. The rotor fixedly sleeves the rotating shaft. The rotor comprises a rotor iron core, a permanent magnet group, a magnetic bridge, a magnetic barrier group and a magnetic barrier isolation group; the rotor iron core is coaxially assembled on the inner side of the stator iron core, an air gap is formed between the rotor iron core and the stator iron core, the permanent magnet sets are arranged in the rotor iron core, located at the axis position of a rotor straight shaft and connected with the magnetic barrier sets, magnetic bridges are arranged between adjacent magnetic barriers in the magnetic barrier sets, and the multiple magnetic barrier sets are all arranged on the edge of the rotor iron core. And two adjacent magnetic barrier groups are symmetrically arranged on the two sides of the axis of the rotor straight shaft. The magnetic field sinusoidal property can be improved, the iron core loss is reduced, the temperature rise of the motor is reduced, the direct-axis inductance of the motor is larger than the quadrature-axis inductance, the counter electromotive force of the motor is small during no-load, and the corresponding no-load loss is low; and the stable terminal voltage is maintained by adjusting the armature current during loading.

This utility model belongs to the field of vehicle drive technology, and in particular relates to a multi-input / output coupling mechanism for a fuel cell hybrid tractor. The structure includes a fuel cell (24), a DC / DC unidirectional converter (25), a second motor (26), a planetary gear system, a hydraulic system, a drive axle (30), a brake (18), a clutch (5), a first motor (22), and a power battery (23). This utility model combines a continuously variable transmission (CVT) device and a power coupling device. The CVT device and the power coupling device share a planetary gear system. The planetary gear system can both change speed and achieve power coupling, reducing transmission links, saving manufacturing costs, saving vehicle space, and improving energy utilization.