38results about How to "Avoid memory effect" patented technology

A method for charging and maintaining a rechargeable battery is provided. The method includes the steps of enabling a life extending mode; determining whether the electric potential of the battery is less than or substantially equal to a predetermined charging level; charging the battery when the battery is connected with a power supply; and maintaining the electric potential of the battery at the predetermined battery level, in which the predetermined battery level is set at approximately from 50% to 70% of the full capacity of the battery.

A hybrid vehicle includes an electronic control unit. The electronic control unit is configured to a) control operation of the power generation mechanism such that a state of charge of the secondary battery is kept at a predetermined control target; b) calculate an estimated actual state of charge of the secondary battery based on an integrated current value and a state of charge decrease amount due to self-discharge of the secondary battery, the integrated current value being obtained by integrating an input current and an output current of the secondary battery; and c) when the estimated actual state of charge has decreased below a predetermined first lower limit state of charge, raise the control target.

The invention discloses an anti-breaking foil device, a post-processing anti-breaking foil method for 9 μm to 20 μm copper foil, and a post-processing machine; it belongs to the technical field of electrolytic copper foil for power batteries of new energy vehicles; its technical points include: the thickness gauge component Include at least 4 thickness gauges, of which at least 2 thickness gauges are set on the left side of the copper foil, and at least 2 thickness gauges are set on the right side of the copper foil; the two thickness gauges distributed on one side of the copper foil are used for It is used to measure the copper foil thickness of the edge and the adjacent edge area; the thickness gauge assembly and the rotation angle sensor are connected to the control system; the control system is connected with the post-processing drive motor assembly; the thickness gauge assembly is arranged in the Between the reel and the first treatment tank. Using the anti-broken foil device, 9μm-20μm copper foil post-treatment anti-break foil method, and post-processing machine of the present application can maximize production efficiency on the premise of ensuring the post-processing safety of 9-20μm copper foil.

The invention discloses an ultrasonic atomization device, which comprises a cavity separated into a coupling chamber and an atomization chamber by an insulating glass installed obliquely; an ultrasonic transducer controlled by an ultrasonic generating circuit is installed on the side wall of the coupling chamber; The upper part of the chemical chamber is connected with an air inlet pipe and a sample feeding pipe, and the lower part is connected with a liquid discharge pipe; a resonant film is installed obliquely on the isolation glass, and the sample feeding pipe extends into the atomization chamber to transport the sample solution to the resonant film. The ultrasonic transducer generates ultrasonic waves, and the ultrasonic waves are coupled and transmitted to the resonant membrane through the coupling chamber, so that the sample solution is atomized into an aerosol, and the carrier gas input from the intake pipe is brought into the sample delivery pipe for processing and enters the analysis device. The invention improves the atomization efficiency of the sample solution, and at the same time prevents the sample from accumulating liquid, effectively avoiding the interference of the accumulating liquid.

The invention relates to a self-adapting predistortion method based on a two-dimension query table in an Orthogonal Frequency Division Multiplexing (OFDM) system comprising error calculation of signals after once predistortion processing and twice predistortion processing for OFDM source signals, self-adapting iteration operation of error signals and renewal of predistortion coefficients which enable the error signals to approach to zero. The predistortion processing employs a method that obtains an amplitude predistortion coefficient and a phase predistortion coefficient through a united index of a first dimension index address X(n) and a second dimension index address Y(n), wherein the second dimension index address Y(n) is calculated by historical input amplitude values. The technical scheme of the invention effectively overcomes memory effect of a power amplifier, and effectively expedites convergence rate of the query table at the same time of not increasing the algorithm complexity, obtains smaller mean error and simultaneously reduces the algorithm hardware implementing complexity.

The present invention discloses a device for double channel test of low carbon and nitrogen content sample isotope. The device is as below: adding soil or plant samples to 10 separate oxidation furnaces combined by two sets of oxidation furnaces and sealing; opening switch control solenoid valves corresponding to each oxidation furnace and corresponding solenoid valves on a connecting pipeline; first extracting air in each oxidation tube by a dry pump, maintaining the vacuum at 3*10<-3>mbar; then extracting each oxidation tube by a molecular pump to vacuum of 2*10<-6>mbar; then heating the oxidation tubes to 960 DEG C, filling oxygen to each oxidation tube to completely oxidize samples in the oxidation tubes and to generate carbon and nitrogen oxides and water; sending mixed gas to a reduction furnace to generate N2, CO2 and H2O; then removing water and enriching to collect N2, CO2, H2O in cold traps respectively; and finally gradually releasing gas in the cold traps to a sample gas reservoir B1 in a double-channel injector system, while sending standard reference gas provided by a G3 or G4 into a standard reference gas reservoir B1 of the dual injector system, and starting double channel program detection.

A first semiconductor layer consisting of AlGaInP is formed on a substrate consisting of GaAs by crystal growth while adding magnesium (Mg) that is a p-type dopant to the first semiconductor layer. A second semiconductor layer consisting of GaAs is then grown on the first semiconductor layer without adding any magnesium to the second semiconductor layer. Thus, the second semiconductor layer can prevent unintended doping (memory effect) produced by magnesium.

The invention discloses a tetraodotoxin deratizing poison bait which consists of one or more of tetraodotoxin, tetraodotoxin bacterial broth, internal organs of globefish, blood of globefish or ovary of globefish. The bait material consists of one or more of rotten rice, swill-cooked dirty oil and peanut cakes or bean cakes after oil expression. The tetraodotoxin deratizing poison bait is reliable in virulence, definite in toxicity, good in deratizing effect, and easy to degrade, and free from toxic pollution, residuals and secondary poisoning. The components are recycled resources and simple and easy to obtain. In the preparation process of the deratizing poison bait, water liquids are not doped, so that the poison bait is good in dissolubility and palatability.

The present invention disclosed a method of frequency domain modeling based on the plural reverse neural network.First transform the collected time domain signal to the frequency domain, and then use the plurality of the fit neural network to model the frequency domain data. After obtaining the output data of the neural networkThe leaf transform is converted to the time domain.Modeling the power amplifier through this method, largely reduces the frequency domain error of the amplifier.It can better describe the nonlinear characteristics and memory effects of the power amplifier through the present invention.

The invention discloses an HEMT epitaxial structure, which structurally comprises a substrate (10), a low-temperature GaN buffer layer (20), an undoped GaN high-resistance layer (30), an AlN isolation layer (40), an undoped GaN channel layer (50), a barrier layer (60) with the Al content thereof to be changing in the stepped manner, and an AlN barrier layer (70). The undoped GaN high-resistance layer and the AlN isolation layer grow after the annealing treatment of the low-temperature GaN buffer layer. Compared with the carbon-doped manner or the iron-doped manner, the crystallization quality is effectively improved and the memory effect caused by ion doping is avoided. Meanwhile, the structure is provided with multiple channels, wherein two main channels are formed at the interfaces of an AlN barrier layer and an undoped GaN channel layer with the barrier layer with the Al content thereof to be changing in the stepped manner, and multiple auxiliary channels are formed at the interface of the barrier layer with the Al content thereof to be changing in the stepped manner. Compared with a conventional HEMT device, the current driving capability of the HEMT device is enhanced. The gate leakage current of the HEMT epitaxial structure and the leakage current of the buffer layer are small, and the current driving capability is strong. Therefore, the HEMT epitaxial structure can be applied to the field of high-power electronic devices. In addition, the invention further provides a preparation method of the HEMT epitaxial structure.

A power system of an extended-range pure electric vehicle, comprising: a power battery pack (1), an engine (4), a fuel tank (2) for supplying fuel to the engine (4), a generator (5) for converting kinetic energy of the engine into electric energy, a power distribution controller (8) and a drive motor (6) for driving the vehicle to run. The power battery pack (1), the generator (5) and the drive motor (6) are all electrically connected to the power distribution controller (8). Power supplied by the power battery pack (1) and the generator (5) is supplied to the drive motor (6) by means of the power distribution controller (8). When the power of the power battery pack (1) is insufficient, the engine (4) starts so as to drive the generator (5) to generate electricity, and supply the electric power generated by the motor (5) to the drive motor (6) and charge the power battery pack (1). The described system may charge a battery pack, distribute energy intelligently and carry out maintenance of the battery pack according to the driving situation of a vehicle, and may prolong the mileage of an electric vehicle and the service life of the battery pack. Also provided by the present invention is a control method for the power system of the extended-range pure electric vehicle.

The invention discloses an atmosphere volatile organic compound condensation and concentration sampling device which comprises a low-temperature environmental cabinet and an atmosphere sampler, wherein a low-temperature cold trap device is arranged in the low-temperature environmental cabinet, and comprises a first-stage cold trap and a second-stage cold trap, the first-stage cold trap comprises a first condensation pipe and a first semiconductor chilling plate group, a first heating wire is wound on the first condensation pipe, the second-stage cold trap comprises a second condensation pipe and a second semiconductor chipping plate group, and a second heating wire is wound on the second condensation pipe. The invention also discloses an atmosphere volatile organic compound condensation and concentration sampling method. The atmosphere volatile organic compound condensation and concentration sampling device and method disclosed by the invention are capable of meeting the demand on online automatic monitoring of the content of a volatile organic compound, and can be used in on-site online automatic monitoring of the content of the atmosphere volatile organic compound.