36results about How to "Small self loss" patented technology

The invention relates to a thermoelectric conversion automotive power supply system using waste heat from automobile exhaust and a control method thereof, wherein the system is composed of an engine unit, a thermoelectric conversion unit, an output and electric energy storage unit and a detection and control unit. The system is characterized in that high temperature exhaust is discharged during the running of the engine and cooling water in a certain temperature range is provided; the heat brought by the high temperature exhaust is absorbed by hot terminals of a plurality of thermoelectric modules connected in series in the thermoelectric conversion unit, and cold terminals of the thermoelectric modules form temperature difference between the hot terminals and the cold terminals under thecooling effect of the cooling water of the automotive engine, so as to generate direct-current electric energy; the voltage and the current of the electric energy generated from the thermoelectric conversion unit are regulated by the output and electric energy storage unit, and the electric energy is used to supply on-vehicle appliances and ISG or charge the energy storage battery; the detection and control unit is used for detecting parameters, sending a control command and performing comprehensive energy management on the system. The system effectively recycles and utilizes the waste heat from the automobile exhaust, improves the economical efficiency of the fuel of the automotive engine, and is contributed to reducing the automobile exhaust emission.

The invention relates to electronic product, especially disclosing a control method and system for Li battery charging in an electronic product. And a charging control method comprises the steps of: A1. detecting Li battery capacity and starting charging the Li battery and executing step A2 when the capacity is equal to or less than a first lower limit value; and A2. real-time detecting the Li battery capacity in the charging course and stopping charging and returning to the step A1 when the capacity is equal to or more than a first upper limit value. And it can combine with the existing techniques, meeting different occasions. And the charging system comprises Li battery module, charging module, detection module and storage module, as well as two control modules and charging mode management module.

The invention relates to a synthetic administration system of wireless datum acquisition, which comprises the following parts: acquisition mode, receiving datum disposal mode and synthetic administration mode, wherein the acquisition mode consists of number apparatus and terminal adapter which connects first Blue Tooth communication mode and optically coupled mode with connecting the datum apparatus interface through the second serial port in the center of CPU. There is a disposal monitor program in the CPU embedded flash memory. The datum acquisition mode connects the computer through the third serial port, which connects the second Blue Tooth communication mode in the adapter through serial port mode. The acquisition mode and receiving datum disposal mode send and receive datum through the first Blue Tooth communication mode of terminal adapter and second Blue Tooth communication mode of host adapter.

The invention belongs to the technical field of liquid level flow on-line monitoring devices, and particularly relates to a differential pressure type high sensitivity liquid level flow measuring device. The problems that an existing mechanical liquid level flow speed measuring instrument cannot adapt to the special environment where a field monitoring device is placed and cannot work for a long time are solved. The differential pressure type high sensitivity liquid level flow measuring device comprises a pressure probe immersed under the liquid level, and further comprises a reference pressure compensation module, a flow speed conversion module and a signal amplifying processing module, wherein the reference pressure compensation module is far away from the liquid level, and the pressure probe is internally provided with a total pressure measuring module and a static pressure module. The static pressure measuring module is connected with the signal amplifying processing module through the reference pressure compensation module, and the reference pressure compensation module is provided with an air guiding device which transmits the barometric pressure to the static pressure measuring module. By means of the differential pressure type high sensitivity liquid level flow measuring device, full-automatic and real-time monitoring is achieved, people are free from heavy work of monitoring the liquid level regularly, and hidden dangers are removed in advance through warning information.

The invention discloses a high-stability corrosion-resistant long-life communication transformer and a manufacturing method thereof. The communication transformer comprises a framework, a winding, a magnetic core, a shielding cover and a packing material, and is characterized in that the framework is an alumina-based porous foam ceramic framework with a porosity of 20-30%; the winding adopts a purple copper wire with epoxy polyester insulating paint; the magnetic core is a molybdenum pomo magnetic core which is shaped like a Chinese character 'ri'; a self-circulation insulating heat transfer filler is filled in gaps between the shielding cover and other parts, and the self-circulation insulating heat transfer filler is a mixture of alumina-based porous foam ceramic and rosin; the shieldingcover is made of titanium-containing low-carbon steel with activated and passivated surface and is packaged in a totally-enclosed structure. The communication transformer has the advantages of smallloss, high conversion efficiency, good electromagnetic shielding property, good insulation property, corrosion resistance, oxidation resistance and long service life.

The invention relates to a control device of a solar generating system and an integrated generator capable of being assembled and disassembled, mainly comprising a controller, an inverter and a storage battery, as well as a main shell and a control shell, wherein the main shell and the control shell can be assembled and disassembled. The storage battery is arranged in the main shell; a wire hole is arranged on the main shell; the controller and the inverter are arranged in the control shell; and element devices such as a control switch, an input / output interface and the like are also arranged in the control shell. According to the invention, the controller, the inverter and the input / output interface are separately arranged in the control shell, and the storage battery is arranged in the main shell; and when needing to be charged, the storage battery is conveniently connected with the controller so that the self-loss of the circuit of each element device is reduced and the service lives of the element devices are prolonged. Only a side cover plate is opened when the storage battery needs to be replaced. Consequently, the separation of the storage battery and the side cover plate is in favor of the replacement of the storage battery and the storage batteries in different capacities can be replaced according to different requirements.

The invention provides a telemetering system power supply device and control method for testing a rotating member. According to the power supply device, a control panel is connected with a battery through lead bonding, wherein the control panel comprises a microcontroller, a circuit protection unit, a first linear voltage regulator, a second linear voltage regulator, a switch control unit, a hallswitch sensor and an indicator light; the microcontroller senses a magnetic field change through the hall switch sensor, outputs a control signal to the switch control unit and carries out real-time indication on the working state through the indicator light; and the microcontroller, the circuit protection unit and the first linear voltage regulator are combined to provide the control panel with apower supply. The control method comprises the steps of collecting magnetic intensity signals; screening data; outputting a control signal; and carrying out battery state monitoring and state indication. A difficulty in power supply control on the battery of a telemetering system rotating part for the rotating member is avoided, the design difficulty of hardware is reduced, the volume of the hardware is reduced, the power consumption of the hardware is reduced and the stability and the interactivity of the device are improved.

The invention discloses an electrical energy metering and fee charging system of an electric automobile with a charging and electricity-switching mixed mode. The head and tail of the electric automobile are provided with charge interfaces; a charge pile or commercial power charging mode is adopted for the charge interfaces to charge, and a vehicle-mounted metering device is used for recording charged electricity; under a charge pile charging mode, a charge pile charging is started by virtue of a cryptographic key, and the fee charging mode is a charge fee charging mode or a post-paid mode; under a commercial power charging mode, a socket is used for providing electricity, and the electricity charge is not needed to be paid during following running; the electric automobile is provided with multiple slots; the battery service fee is debited from a CPU (Central Processing unit) card inserted into the vehicle-mounted metering device according to the electricity proportion. The system can be used for solving the accurate billing problem under different charge and electricity switching modes, guiding a user to use an own berth slow-charge mode, and reducing the impact to an electric network; different entities can be conveniently introduced to participate in investment and construction of charging equipment, charge piles and electricity switching stations, and the development of a vehicle battery and charging equipment technology is promoted.

The invention discloses a natural product electrolyte composition comprising a nitrogen-containing derivative of a polyphenol, an anthracene phenol compound, an alizarin derivative, an amino acid derivative and an aesculetin. In addition, the invention also discloses the use of the above composition for an electrolyte of a zinc-manganese battery, and a zinc-manganese battery in which the electrolyte comprises the composition. The composition of the invention has excellent corrosion inhibition effect, good conductivity, low temperature resistance and high temperature resistance; When used as the electrolyte of the zinc-manganese battery, the self-discharge performance of the negative electrode material can be suppressed in the non-working state, thus the self-loss of the battery can be reduced, and the service life of the battery can be greatly prolonged. However, the normal battery performance can be exerted due to the good electric conductivity in the battery operation. More importantly, the composition does not contain heavy metal mercury, avoiding heavy metal pollution that may be caused by discarded batteries, and reducing follow-up treatment costs and environmental pollution risks.

The invention discloses a multi-mode control method for a photovoltaic grid-connected inverter with a duplex parallel structure. Real-time detection is performed on the output power of the photovoltaic grid-connected inverter; when the output power of the inverter is less than 2 percent of rated power, the inverter enters a stand-by state, and two sets of inversion unit modules respectively stop working; when the output power of the inverter is greater than 2 percent of the rated power and less than 45 percent of the rated power, the inverter enters a low-power state, and only one set of inversion unit modules is started to work; when the output power of the inverter is greater than 45 percent of the rated power, the inverter enters a high-power state, and the two inversion unit modules are both in a working state. According to the multi-mode control method for the photovoltaic grid-connected inverter with the duplex parallel structure, disclosed by the invention, under the stand-by mode, the two sets of inversion unit modules stop working; under the low-power mode, only one set of inversion unit modules works; under the high-power mode, the two sets of inversion unit modules work simultaneously, and thus, the daily loss of the inverter is reduced; the multi-mode control method for the photovoltaic grid-connected inverter with the duplex parallel structure, disclosed by the invention, has the advantages of being low in switching frequency, small in self-loss, small in output harmonic, and the like, and a greener energy resource can be provided for power grids.

The invention discloses a high-stability high-reliability self-circulating three-winding autotransformer and a manufacturing method thereof. The three-winding autotransformer comprises a framework, windings, a magnetic core, a shielding cover and a packaging material and is characterized in that the framework is an alumina-based porous foamed ceramic framework with the porosity of 20-30%; the windings adopt red copper wires with 1140 epoxy polyester insulating varnish; the magnetic core is a B-shaped silicon steel sheet magnetic core; gaps between the shielding cover and other parts are filledwith self-circulating insulating heat transfer filler, and the self-circulating insulating heat transfer filler is a mixture of alumina-based porous foamed ceramic, non-vulcanized silica gel and gumrosin; the shielding cover is made of aluminum alloy and packaged by a full-closed structure. The autotransformer has the advantages of small loss, high conversion efficiency, good electromagnetic shielding performance, good insulation, high cost performance and long service life.

The invention relates to the field of manufacturing of thermal batteries and normal-temperature lithium primary battery electrode materials, in particular to a method for preparing a core-shell composite sulfide material through a two-step method. The method comprises the following steps: forming a metal cobalt layer which is uniformly distributed on the surface of FeS2 powder particles through a chemical plating method to obtain a precursor material; then carrying out vulcanization treatment on the precursor material; and obtaining the core-shell composite sulfide material. When the prepared shell cobalt disulfide accounts for 2.5-14.6% of the total mass of the core-shell composite sulfide material, the core-shell composite positive electrode material is used as a positive electrode material; after a thermal battery is assembled, the thermal battery is subjected to constant-current discharge at the working temperature of 520 DEG C and the current density of 200mA / cm < 2 >, and when the cut-off voltage is 1.6 V, the specific discharge capacity of the thermal battery is up to 331mAh / g. The preparation operation method is reliable, the cost is low, the obtained product has excellent thermal stability and electrochemical performance, and large-scale industrial production is facilitated.

The invention discloses a plasma texturing system and a texturing method. The plasma texturing system comprises a plasma inverter, a control unit, a high voltage porcelain tube, a high voltage electrode and a to-be-detected aluminum section, wherein the plasma inverter comprises a filter, a power device and a rectifier, the control unit is connected with the inverter and comprises a self-excited starting circuit mode, an automatic lock phase control mode and a one-chip microcomputer mode, one end of the plasma inverter is provided with a high frequency high voltage generator, the plasma inverter and the high voltage electrode are connected through the high frequency high voltage generator, and the high voltage electrode and the high voltage porcelain tube are connected and parallely arranged at one side of the to-be-detected aluminum section. With the plasma texturing system, generated plasma acts on the surface of an aluminum sheet through a gas medium, strong ion impact enables the surface of a processed object to be coarsened, so a bonding material on the surface of the aluminum sheet has enhanced seepage force and adhesive force on the surface of the processed object.

The invention relates to a core-shell composite sulfide material. The inner core of the core-shell composite sulfide material is iron disulfide, and the outer shell is cobalt disulfide. After the core-shell structure is formed, the heat stability of the material is remarkably improved; compared with pure iron disulfide, the thermal decomposition temperature is increased from 550 DEG C to 580-640 DEG C. Meanwhile, the conductivity of the material is remarkably improved; and compared with pure iron disulfide, the conductivity is multiplied. The core-shell composite material designed and preparedin the invention can be used as a positive electrode material of a thermal battery. When being used as the positive electrode material of the thermal battery, the product designed and provided by theinvention has the advantages of high thermal stability, electrochemical performance, chemical stability, effective capacity, power and the like.

The invention relates to electronic product, especially disclosing a control method and system for Li battery charging in an electronic product. And a charging control method comprises the steps of: A1. detecting Li battery capacity and starting charging the Li battery and executing step A2 when the capacity is equal to or less than a first lower limit value; and A2. real-time detecting the Li battery capacity in the charging course and stopping charging and returning to the step A1 when the capacity is equal to or more than a first upper limit value. And it can combine with the existing techniques, meeting different occasions. And the charging system comprises Li battery module, charging module, detection module and storage module, as well as two control modules and charging mode management module.

The invention discloses a series lithium battery pack voltage balancing device and a control method, the series lithium battery pack voltage balancing device is used for a battery pack Pack1 and a battery pack Pack2 which are connected in series, two ends of a capacitor C1 are connected to two ends of the battery pack Pack1 and the battery pack Pack2 which are connected in series, one end of a first switch S1 is connected with one end of the capacitor C1, the other end of the first switch S1 is connected with one end of a first inductor L1 and an anode of a first diode D1, and the other end of the first inductor L1 is connected with the anode of a second diode D1. The other end of the first inductor L1 is connected to the joint of the battery pack Pack1 and the battery pack Pack2, one end of the second switch S2 is connected with one end of the second inductor L2 and the cathode of the second diode D2, the other end of the second switch S2 is connected with the other end of the capacitor C1, the anode of the second diode D2 is connected with one end of the capacitor C1, and the other end of the second diode D2 is connected with the other end of the capacitor C1. The other end of the second inductor L2 is connected to the joint of the battery pack Pack1 and the battery pack Pack2, and the duty ratio of the first switch S1 and the duty ratio of the second switch S2 are controlled through a controller. Energy conversion in the series battery pack can be achieved, and the purpose of balancing the series battery pack is achieved.

A pulse magnetic shock catapult comprises a power supply, a power supply control panel, a U-shaped catapult guide rail connected with the power supply control panel and a catapult tractor arranged onthe U-shaped catapult guide rail in a sliding connection mode, the catapult tractor is a sliding block of a frame structure, and at least four pairs of magnets which are symmetrically arranged up anddown and have alternate positive and negative magnetic poles are embedded in the sliding block; silicon steel sheet winding unit arrays formed by connecting windings in series in the length directionare symmetrically embedded in the left side wall and the right side wall of the U-shaped catapult guide rail; each silicon steel sheet winding unit comprises two oppositely-arranged coils, the power supply supplies power to the silicon steel sheet winding unit to generate a magnetic field, and the power supply is a super-power variable-frequency pulse generator. The catapult is simple in structure, low in technical difficulty, low in manufacturing cost, convenient to maintain and remarkable in energy conservation. Under the same condition, compared with an existing electromagnetic catapult using a permanent magnet linear synchronous motor, energy is saved by at least 40%. Power is supplied in a ground-wire-free mode, the pulse amplitude can be reduced, the consumption of an electric brushis reduced, and a ground wire is omitted.

The invention discloses a high-stability high-reliability self-circulating three-winding autotransformer and a manufacturing method thereof. The three-winding autotransformer comprises a framework, windings, a magnetic core, a shielding cover and a packaging material and is characterized in that the framework is an alumina-based porous foamed ceramic framework with the porosity of 20-30%; the windings adopt red copper wires with 1140 epoxy polyester insulating varnish; the magnetic core is a B-shaped silicon steel sheet magnetic core; gaps between the shielding cover and other parts are filledwith self-circulating insulating heat transfer filler, and the self-circulating insulating heat transfer filler is a mixture of alumina-based porous foamed ceramic, non-vulcanized silica gel and gumrosin; the shielding cover is made of aluminum alloy and packaged by a full-closed structure. The autotransformer has the advantages of small loss, high conversion efficiency, good electromagnetic shielding performance, good insulation, high cost performance and long service life.

The invention discloses a high-stability corrosion-resistant long-life communication transformer and a manufacturing method thereof. The communication transformer comprises a framework, a winding, a magnetic core, a shielding cover and a packing material, and is characterized in that the framework is an alumina-based porous foam ceramic framework with a porosity of 20-30%; the winding adopts a purple copper wire with epoxy polyester insulating paint; the magnetic core is a molybdenum pomo magnetic core which is shaped like a Chinese character 'ri'; a self-circulation insulating heat transfer filler is filled in gaps between the shielding cover and other parts, and the self-circulation insulating heat transfer filler is a mixture of alumina-based porous foam ceramic and rosin; the shieldingcover is made of titanium-containing low-carbon steel with activated and passivated surface and is packaged in a totally-enclosed structure. The communication transformer has the advantages of smallloss, high conversion efficiency, good electromagnetic shielding property, good insulation property, corrosion resistance, oxidation resistance and long service life.

The invention discloses a multi-mode control method for a photovoltaic grid-connected inverter with a duplex parallel structure. Real-time detection is performed on the output power of the photovoltaic grid-connected inverter; when the output power of the inverter is less than 2 percent of rated power, the inverter enters a stand-by state, and two sets of inversion unit modules respectively stop working; when the output power of the inverter is greater than 2 percent of the rated power and less than 45 percent of the rated power, the inverter enters a low-power state, and only one set of inversion unit modules is started to work; when the output power of the inverter is greater than 45 percent of the rated power, the inverter enters a high-power state, and the two inversion unit modules are both in a working state. According to the multi-mode control method for the photovoltaic grid-connected inverter with the duplex parallel structure, disclosed by the invention, under the stand-by mode, the two sets of inversion unit modules stop working; under the low-power mode, only one set of inversion unit modules works; under the high-power mode, the two sets of inversion unit modules work simultaneously, and thus, the daily loss of the inverter is reduced; the multi-mode control method for the photovoltaic grid-connected inverter with the duplex parallel structure, disclosed by the invention, has the advantages of being low in switching frequency, small in self-loss, small in output harmonic, and the like, and a greener energy resource can be provided for power grids.

The invention belongs to a pressing device used for welding, in particular to a pressing device for welding of a battery production line. The pressing device mainly solves the technical problems that a pressing device commonly used in current production is complex in adjusting step, error compensation cannot be performed, and the fixing stability degree is low. According to the technical scheme, the pressing device for welding of the battery production line is composed of three parts of an upper floating pressing board assembly, a lower carrying board assembly and an installation bottom board, and the upper floating pressing board assembly and the lower carrying board assembly are fixed to the installation bottom board. A bottom board of the upper floating pressing board assembly is fixed to the installation bottom board. A supporting board is in a bent-arm shape. The lower end of the supporting board is fixed to the bottom board. An air cylinder installation board is fixed to the upper end of the supporting board. A downward-pressing air cylinder is fixed to the air cylinder installation board. A connecting board is fixed to an output shaft of the downward-pressing air cylinder. The connecting board is connected with a fixing seat through elastic pins. A rotary shaft is sleeved with the fixing seat. A floating swing seat is installed on the fixing seat. An upper pressing board seat with an upper floating pressing board is installed on the floating swing seat. The lower carrying board assembly comprises a support, a cushion board and a lower carrying board. The support is fixed to the installation bottom board and provided with the cushion board. The lower carrying board is fixed to the cushion board. The pressing device is used for pressing polar bands and polar lugs on the battery production line in a floating manner in the welding process.