59results about How to "Little impact on lifespan" patented technology

The invention discloses a new energy automobile power drive system and an active balancing method of the battery capacity thereof. The power drive system comprises three star-connected module circuits, wherein each module circuit comprises a plurality of modules which are connected in series; each module comprises a battery pack and an inverter connected with the battery pack; each inverter is connected to a switch control circuit; all batteries in each battery pack are connected with a BMS circuit; the BMS circuit is connected with a switch control circuit through a signal isolation circuit; and the signal isolation circuit is connected with a control center. Power battery packs and motor drive inverters are divided into a plurality of identical modules and then integrated into a whole, so that the BMS complexity is reduced, the service life of the battery packs is prolonged, the capacity of battery units can be actively balanced, the inverters are used as a vehicle-mounted high-power charger, the overall efficiency of the inverters is improved, redundant backup can be conveniently achieved by the consistency of the modules and the reliability of the motor drive system is improved.

The invention discloses a soybean milk machine. The soybean milk machine comprises a machine head and a cup body, wherein the machine head is buckled on the cup body; a motor is arranged in the machine head; a motor shaft of the motor extends into the cup body; crushing tools are arranged at the front end of the motor shaft. The soybean milk machine is characterized that materials in the cup body are heated to preset temperature at first heating power and then is heated at second heating power for the hold time t; the crushing tools start to crush the materials at the rotating speed P0. According to the soybean milk machine disclosed by the invention, the working time of the motor can be shortened, the corresponding crushing efficiency is improved, and further the noise time also can be shortened.

A low temperature heat processing method of single feeder head eutectic Al-Si alloy piston material is processed according to following steps: heating a cast piston in a well-type furnace to 480+(-)5 degrees centigrade, keeping the temperature for 1.5 h, then taking out from the furnace; using the water of 50 to 80 degrees centigrade to quench and cool; after quenching, heating the well-type aging furnace to 160+(-) degrees centigrade along the furnace, performing manual aging after keeping temperature for 5 , then taking out from the furnace and performing air cooling, finishing the whole process of heat process of the piston material. Each performance index of the eutectic Al-Si alloy piston material after the low temperature heat processing exceeds the each performance index order by the internal-combustion engine piston technical condition GB/T1148-93. This technical method can guarantees the piston quality and can reduce the manufacturing cost.

The invention discloses a direct-cooling deep-enthalpy heat-extracting coal mine gas heat pump system. The direct-cooling deep-enthalpy heat-extracting coal mine gas heat pump system comprises a coalmine gas heat extracting chamber. At least one coal mine gas heat extracting box is arranged on the coal mine gas heat extracting chamber and communicates with an evaporator of a heat pump unit. An anti-freezing solution flows through an anti-freezing solution pipeline. A circulating pump is installed on the anti-freezing solution pipeline. The anti-freezing solution absorbs heat in coal mine gaswhile flowing through the coal mine gas heat extracting box and transmits the heat absorbed from the coal mine gas to a refrigerant in the heat pump unit while flowing through the evaporator. A condenser in the heat pump unit is used for heat exchange with hot water for users. The direct-cooling deep-enthalpy heat-extracting coal mine gas heat pump system is simple in structure and high in coal mine gas waste heat recovery efficiency.

The invention discloses a capacitive voltage transformer with a harmonic measurement function, which comprises a capacitive voltage divider, an electromagnetic unit and a harmonic measurement module,and is characterized in that the capacitive voltage divider comprises an outer insulating sleeve, a capacitor unit arranged in the outer insulating sleeve and an expander connected with one end of thecapacitor unit; the capacitor unit comprises a high-voltage capacitor, a medium-voltage capacitor and a harmonic measurement capacitor which are sequentially connected in series, a medium-voltage terminal between the high-voltage capacitor and the medium-voltage capacitor is connected with the high-voltage side of the electromagnetic unit, and a harmonic measurement terminal between the medium-voltage capacitor and the harmonic measurement capacitor is connected with the low-voltage side of the electromagnetic unit; and the harmonic measurement module is used for measuring the output voltageat the two ends of the harmonic measurement capacitor. On the basis of meeting the measurement accuracy of the power frequency signal, the capacitive voltage transformer also has the function of measuring the harmonic signal, only a small number of capacitor elements need to added in the structure of the existing CVT, the capacitive voltage transformer has the advantages of simple structure, smallinfluence on the service life of the product, good economy and the like, and can be popularized and applied to different voltage classes.

The invention relates to the technical field of lithium battery production, and discloses a transfer device for lithium battery production comprises a box body, a thermostat, a temperature sensor, a fire extinguisher, an electric telescopic rod, a first motor, a second motor and a third motor. A grasping mechanism is arranged on the upper side of the box body. A cavity is arranged on the lower side inside the box body, and an inner supporting plate is arranged on the upper side of the cavity. A second guide groove is formed in the upper side of the inner supporting plate and connected with a direction locking wheel in a rolling mode, the direction locking wheel is rotationally connected with a second supporting frame, the upper end of the second supporting frame is fixedly connected with a second supporting plate, a first supporting plate is arranged on the upper side of the second supporting plate, and a damping mechanism is arranged between the second supporting plate and the first supporting plate. The middle of the second supporting plate is in threaded connection with a third lead screw. The left and right sides of the third lead screw are rotationally connected with the side wall of the inner supporting plate, and a first supporting frame is arranged on the upper right side of the inner supporting plate. The transfer device for lithium battery production is simple in structure, the lithium battery transfer safety can be greatly improved, meanwhile, lithium batteries can be taken and placed rapidly and conveniently in the transfer process, time and labor are saved, and the transfer device for lithium battery production has the available value in the technical field of lithium battery production.

The invention relates to a flow rate regulator, and in particular relates to a bend pipe flow rate regulator which comprises a bend pipe with a flange. The regulator provided by the invention is characterized in that the bend pipe is formed by sequentially assembling a series of flow rate regulating bend pipes with different diameters and different bend curvatures; and the ratio of the diameter of each flow rate regulating bend pipe to the curvature semi-diameter corresponding to the position of the flow rate regulating bend pipe is equal or approximate. The bend pipe flow rate regulator provided by the invention has the advantages that the structure is unique, centrifuge impact force is eliminated maximally, the flow rate of a fluid flows out of the bend pipe is distributed uniformly, the vibration of a regulating valve set is eliminated, and the service life of the device is prolonged.

The invention relates to a smart electric energy meter, in particular to a super-capacitor application circuit of a battery replaceable type smart electric energy meter power supply. The super-capacitor application circuit is low in power consumption, and the super-capacitor holding time is long. The super-capacitor application circuit comprises a transformer T1, a rectifying circuit, a voltage stabilizing circuit and a sampling circuit, and further comprises a dual-super-capacitor clock backup power circuit. The dual-super-capacitor clock backup power circuit comprises a clock chip, an electric energy meter processing unit, an anti-reverse diode D5, a super-capacitor C6 and a charge-discharge resistor R6, wherein the clock chip comprises a main power supply end Vcc2, a backup power supplyend Vcc1, a chip select signal end CE, a data signal end I/O and a communication clock signal SCLK; the main power supply end Vcc2 is connected with the voltage stabilizing circuit, and the backup power supply end Vcc1 is connected with the positive pole of the anti-reverse diode D5. By means of the super-capacitor application circuit, the cost of an electric energy meter is little increased; thepower consumption increased by the circuit is very low; the trickle charge current is very low, and the service life of the super-capacitor C4 and the service life of the super-capacitor C6 are prolonged.

The invention discloses an inhead type flat plate vulcanizing machine. The inhead type flat plate vulcanizing machine comprises a rack and a vulcanizing device; the vulcanizing device comprises a lower heating plate, an upper heating plate, a pressurizing oil cylinder mechanism, a die disassembling and assembling oil cylinder mechanism and a hydraulic control system; the pressurizing oil cylindermechanism comprises a pressurizing oil cylinder which is arranged between the top of the rack and the upper heating plate; a piston rod of the pressurizing oil cylinder is arranged upwards vertically;the upper end part of the piston rod of the pressurizing oil cylinder is fixedly connected with the rack; the bottom of the body of the pressurizing oil cylinder is fixedly installed on the upper surface of the upper heating plate; and the die disassembling and assembling oil cylinder mechanism comprises a die disassembling and assembling oil cylinder which can be used for driving the upper heating plate to move in a direction perpendicular to the upper heating plate. The vulcanizing machine reduces the height of the equipment, guarantees stable application of vulcanizing pressure, reduces the influences of a heat source of the vulcanizing machine on the service life of the pressurizing oil cylinder, can effectively prevent hydraulic oil of the pressurizing oil cylinder from dropping andpolluting the vulcanizing machine and a rubber belt, thereby guaranteeing normal running of the equipment and increasing the finished product rate of the rubber belt.

The invention discloses an aluminum electrolytic tank composite cathode structure containing a highly conductive skeleton network. Since cathode current collector skeletons are pre-installed inside the cathode, cathode current collector skeletons with different shapes are pre-arranged in a cathode carbon block, so that the cathode structure can redistribute the distribution and the size of the level current in aluminum liquid, and the mechanical properties of the cathode can be improved and the service life of the cathode is improved. By virtue of the cathode, according to structural parameters and types of the materials determined by the actual groove design, the horizontal current density of the aluminum liquid along the long axis and short axis of the electrolytic tank can be significantly reduced and thus the vertical amplitude of fluctuation of the aluminum liquid-electrolyte interface is weakened and the proper melt horizontal movement is maintained, the electrolytic tank can run smoothly in a low polar distance, the energy conservation and consumption reduction are realized, and the processing of the structure is relatively simple and easily implemented.

The invention relates to a low-temperature charging method for a lithium ion battery. The method comprises the following steps: providing a three-electrode battery with a reference electrode; according to initial state parameters of the three-electrode battery, setting initial pulse current parameters, carrying out pulse charging on the three-electrode battery according to the initial pulse current parameters, the state parameters comprising at least one of the battery SOC state, the battery temperature and the battery SOH state, the pulse current parameters comprising a pulse waveform, a pulse period, a positive pulse amplitude, a negative pulse amplitude, a positive pulse duration and a negative pulse duration; and finally, in the charging process, monitoring the cathode potential and the battery voltage of the three-electrode battery in real time, and adjusting pulse current parameters according to the cathode potential and the battery voltage. According to the method, in the charging process, pulse current parameters are adjusted through the negative electrode potential and the battery voltage, so that the battery can exert the maximum charging capacity within the safety range without lithium precipitation side reaction, and safe and rapid charging of the battery is achieved.

The invention provides a novel switching circuit used for switching a capacitor and a switching control method of the capacitor in order to resolve the problems of inrush current, oscillation, arc discharging and restriking of the capacitor in the switching process. The switching circuit is composed of a one-way connection part and a controllable mechanical switch part which are connected in parallel, makes full use of the characteristic that a mechanical switch part is free of loss, and realizes pre-charging of the capacitor through the one-way connection part so that the residual voltage of the capacitor can be the voltage peak value of a power grid. A control switch is input at the peak value of the voltage of the power grid, the switching-on inrush current caused by voltage leap when the capacitor is input is effectively reduced, and the influences of motion response delay of the mechanical switch are eliminated. In combination with the switching control method, no inrush current or arc discharging is generated in the switching process of the capacitor, and a switching loop is free of loss after the capacitor is put into operation.

The invention discloses a centrifugal pump, and relates to the technical field of centrifugal pumps. The centrifugal pump comprises a base, a pump body and a driving motor are fixed to the top of the base, a water inlet port is fixed to the front side of the pump body, the interior of the water inlet port is communicated with the interior of the pump body, a water outlet port is fixed to the top of the left side of the pump body, and the interior of the water outlet port is communicated with the interior of the pump body. According to the centrifugal pump provided by the invention, when an impeller and arc-shaped blades drive water in the pump body to rotate, centrifugal force borne by sand and stones in the water can enable the sand and stones to approach the inner wall of the pump body, and the sand and stones in the water can be collected through the water pressure in the pump body in the working process by arranging a collecting guide plate on the left side of a cleaning device, the sand and stones can stay in the collecting device to be stored under the cooperation of a filter plate and an arc-shaped barrier plate, and the pressurizing effect of the centrifugal pump cannot be influenced, so that the sand and stones in the water can be accurately screened, and the sand and stones are prevented from rapidly moving to influence the inner wall of a water conveying pipe.

The invention discloses an electronic transformer error measurement device and method, and the method comprises the steps that a synchronous photoelectric clock source transmits second pulse signal toa merging unit and a data collection module of a to-be-measured electronic transformer when an upper computer transmits a test instruction; the on-line monitoring module receives a network message data frame sent by the merging unit of the electronic transformer to be detected after receiving the second pulse signal, and analyzes the network message data frame to obtain detected electric energy sampling data of the electronic transformer to be detected; the data acquisition module acquires electric energy data of a standard electronic transformer after receiving the second pulse signal so asto acquire reference electric energy sampling data; and the error calculation module performs asynchronous measurement processing on the measured electric energy sampling data and the reference electric energy sampling data, and calculates the error of the to-be-measured electronic transformer according to the measured electric energy sampling data subjected to asynchronous measurement processingand the reference electric energy sampling data subjected to asynchronous measurement processing.

A quick charging method for a lead-acid storage battery of an electric vehicle is characterized in that when the lead-acid storage battery is charged, a high-power constant-voltage current-limiting charging module and a low-power pulse discharging module work at the same time, that is, the storage battery is charged in a constant-voltage current-limiting charging mode and superimposed with negative pulses with adjustable depth. According to the method, the lead-acid storage battery of the electric vehicle is rapidly charged for 45 minutes, the actual capacity is 85% or above of the rated capacity, the purpose of emergency charging is achieved, water loss is less when the storage battery is charged, and the influence on the service life of the storage battery is less.

The invention discloses a new-source automobile power battery top-speed flexible charging control method and system and an automobile. The control method comprises the steps: employing a bidirectionalcharging system for generating a sine alternating current with the set frequency to conduct alternating current charging and discharging on a battery, performing rapid and efficient preheating on thebattery from inside to outside by means of ohm heat production of the battery, and stopping preheating after the set temperature is reached; and then charging the battery by adopting constant current, and after the voltage of the battery reaches a cut-off voltage, carrying out constant-voltage charging on the battery by the cut-off voltage. The charging speed of the new energy automobile is increased, battery lithium precipitation is avoided, the influence on the service life of the lithium ion battery is small, additional battery preheating equipment is not needed, implementation is easy, and the application prospect is very wide.

The invention discloses a novel kitchen ventilation system. A kitchen comprises a capital construction top layer and a ceiling layer. The ventilation system comprises an air mixing chamber formed between the ceiling layer and the capital construction top layer, an air conditioner air conditioner main unit, an air inlet panel and an air outlet panel, wherein the air inlet panel and the air outlet panel are installed on the ceiling layer, and the air conditioner air conditioner main unit is installed in the air mixing chamber. The ventilation system comprises a refrigeration mode, and the refrigeration mode comprises a first air inlet mode and a second air inlet mode; in the second air inlet mode, air below the ceiling layer passes through the air inlet panel and then enters the air mixing cavity; and in the second air inlet mode, the air below the ceiling layer and the air in the air mixing cavity are mixed and then enter the air conditioner main unit. The novel kitchen ventilation system has the advantages that a user can feel a good cooling effect, and meanwhile the influence on the service life of the air conditioner main unit can be reduced as much as possible. The novel kitchenventilation system is used for kitchen refrigeration or ventilation.

The invention discloses cold air conditioning equipment for a kitchen. The equipment comprises a main air conditioning machine, an air inlet panel and an air outlet panel; the air inlet panel and theair outlet panel are mounted on a suspended ceiling layer of the kitchen; the main air conditioning machine is mounted between the suspended ceiling layer of the kitchen and an infrastructure top layer; a first air inlet and a first air outlet are formed in the main air conditioning machine; the air inlet panel and the first air inlet are mounted in a mutually separated manner; during refrigeration, under the negative pressure action of the space between the suspended ceiling layer and the infrastructure top layer, air below the suspended ceiling layer enters the space above the suspended ceiling layer through the air inlet panel and then enters the first air inlet, and the air is discharged via the first air outlet to the air outlet panel. The equipment has the advantages that the equipment is more convenient to assemble, after assembling, a user can feel the relatively good cooling effect, and meanwhile, the influence on the life of the main air conditioning machine can be reduced asmuch as possible. The equipment is applied to kitchen refrigeration or ventilation.

The invention discloses a method for preparing high carbon ferromanganese from high-manganese slag, and belongs to the technical field of high carbon ferromanganese. The problems that in the prior art, when high carbon ferromanganese is prepared from conventional manganese ores, the service life of a furnace lining is likely to be shortened, cost is low, and the production efficiency is low are solved. The method comprises the following steps that S1, the high-manganese slag and carbon powder are prepared into cold-bound pellets; and S2, the cold-bound pellets are put in a resistance furnace or an induction furnace or an electric furnace, the cold-bound pellets are heated to 1400 DEG C to 1500 DEG C, lime is added as a desulfurizing agent, and the high carbon ferromanganese can be obtained. The preparation method is simple and easy to control, and the prepared high carbon ferromanganese accords with national standard requirements. The method can be used for preparing the high carbon ferromanganese.