321results about How to "Extend discharge time" patented technology

Disclosed is a wind and solar hybrid power system based on an ultra-capacitor battery hybrid system, which includes a DC/DC buck converter (20), an AC/DC converter (30), an ultra-capacitor assembly (40), a DC/AC converter (50), a battery assembly (60), a battery charge circuit (700), a photovoltaic array (70), a wind generator (80) and an oil engine/commercial power interface (90). The photovoltaic array (70) is connected with the ultra-capacitor assembly (40) through the DC/DC buck converter (20); the wind generator (80) and the oil engine/commercial power interface (90) are connected with the ultra-capacitor assembly (40) through the AC/DC converter (30); the ultra-capacitor assembly (40) charges the battery assembly (60) through the battery charge circuit (700); the ultra-capacitor assembly and the battery assembly provides a definite power buffering to the system so that to maintain a stable voltage of the power supply. The wind and solar hybrid power system of the invention can provides uninterrupted power to the telecommunication system and resident living in the undeveloped areas where the power distribution network can not reach.

The invention discloses a shift register cell, a gate driving circuit, a data driving circuit and a display, wherein the shift register cell comprises a first signal input end, a second signal input end, a first clock signal input end, a pull-down control signal input end, a signal output end (VOUT), an input module (21), a driving module (22), a driving control end pull-down delay module (23), a clock feed through inhibition module (25) and a low-level retention module (24). According to the invention, the signal output end can quickly discharge by a charging transistor in the driving module by prolonging discharging time for a driving control end in the shift register cell; and the electricity leakage of the transistor in the clock feed through inhibition module is inhibited, so that work speed and integration degree of the circuit are improved.

An organic electroluminescent device having solar cells and a fabricating method therefor are disclosed. The device comprises a transparent substrate; an organic electroluminescent device on the transparent substrate; and at least one solar cells on the transparent substrate. Besides, the device further comprises a driving unit coupled to the organic electroluminescent device; a transform unit coupled to the solar cells; and a control unit coupled to the driving unit and the transform unit.

According to the charge control method of the present invention, as an electric storage means, a group of capacitors is used that include 2n (where n is an integer of 2 or more) electric double layer capacitors, from first to 2n-th electric double layer capacitors, having an equal electrostatic capacity, and that is configured such that adjacent electric double layer capacitors are connected either in series or in parallel by a switch and the 2n-th electric double layer capacitor and the first electric double layer capacitor are connected in parallel by a switch. Among the 2n capacitors Ci constituting the electric storage unit 21, adjacent capacitors are sequentially switched from a series connection to a parallel connection, or the 2n-th capacitor C2n and the first capacitor C1 are switched to a parallel connection state, whereby variations in the inter-terminal voltages of the capacitors are suppressed.

The invention relates to a portable lottery ticket machine, which comprises a main case body, a case body cover, a display, a host machine, a printer and a keyboard. The display is arranged on the case body cover, the host machine and the printer are arranged in the main case body, a host machine seal cover is arranged above the host machine, the keyboard is arranged on the host machine seal cover, the printer and the keyboard are respectively connected with the host machine through different data lines, and the portable lottery ticket machine is also provided with a case body locking device used for locking the case body cover and the main case body. The portable lottery ticket machine can carry out movable ticket sale and is suitable to moving lottery ticket sale for underdeveloped areas or small towns, villages and even peripheral mountain areas.

The invention relates to a series dynamic voltage restorer which adopts a super-capacitor and battery hybrid energy storage system, belonging to the technical field of power equipment. The dynamic voltage restorer comprises a charge device which is used for charging the super-capacitor and battery hybrid energy storage system, a hybrid storage energy system consisting of a super-capacitor and a battery and used for storing the power energy in direct current form, an invert unit which is used for outputting compensation voltage and a boosting filter unit which is used for connecting the dynamic voltage restorer to a power system. The dynamic voltage restorer uses one hybrid energy storage module to realize the energy storage requirement of the direct current side of the restorer to replace the traditional energy storage manner, thus satisfying the compensation need of short-time drop of voltage in the power system. At the same time, compared with the dynamic voltage restorer which adopts a traditional energy storage unit, the dynamic voltage restorer has better dynamic response, longer compensation time and higher performance price ratio and is more environment-friendly.

The invention presents a switching power control circuit including two levels of under voltage lockout to improve the protection of the power supply. An input terminal of control circuit is connected to a supplied capacitor to supply the power of the control circuit. The supplied capacitor is charged through a start resistor for the start-up. Once the input voltage reaches a start-up voltage, the control circuit will start the operation. After that, the power is further supplied from a transformer of the power supply. If a fault condition is occurred, the switching of the control circuit will be stop and the supplied capacitor will be discharged. When the input voltage is discharged lower than a first under-voltage lockout threshold, the circuits of control circuit are shut down to consume lower power. Furthermore, once the input voltage is discharged lower than a second under-voltage lockout threshold, the control circuit will enable the start-up again. During the discharge period from the first under-voltage lockout threshold to second under-voltage lockout threshold, the switching of the control circuit is off and the discharge time is increased which reduces of the switching duty cycle and improves the protection of the power supply.

The invention relates to an anode material of a Li-ferrous disulfide battery and the Li-ferrous disulfide battery, belonging to the battery field. The anode material of the Li-ferrous disulfide battery comprises the following ingredients by weight percentage: 50-99.5 percent of ferrous disulfide powder, 0.25-25 percent of bonder, 0.25-25 percent of conductive agent and the balance first main group element compounds accounting for 0.4-10 percent of the quality of the ferrous disulfide powder; the first main group element compounds comprise one ore more o carbonate, bicarbonate, silicate, germanate, acetate, phosphate, aluminate, titanate and amino salts. In the invention, the added first main group element compounds greatly improve the discharging platform and discharging performance of the battery, the discharging platform of the battery is high, the discharging time is long, the discharge capacity is large, the heavy-current discharging property is good and the storage life is long.

The invention provides a molybdenum disulfide and cobalt disulfide composite positive electrode material which is hydrothermally synthesized and is used for a long-lifetime thermal battery. The composite positive electrode material is characterized in that the material has a hollow molybdenum disulfide petal-shaped framework structure, wherein cobalt disulfide fills and covers a surface of a framework, the grain size of the surface-covered cobalt disulfide is 1-5 micrometers, and the decomposition temperature of the material is 650-700 DEG C. When the material is applied to a LiSi- self-prepared composite positive electrode material system, the voltage of a first discharging platform is 2-1.8V under discharging at 450 DEG C and current density of 50mA, no obvious voltage peak is generated,the discharging platform is smooth, the discharging time is relatively long, and the material is suitably used for the long-lifetime thermal battery. Since the reaction of the prepared positive electrode material is completed in a liquid phase in one time, the process equipment is simple, the raw material is available, the preparation cost is relatively low, and the material is high in repeatability and has a wide application prospect.

A power supply device having a plurality of series-connected-battery blocks which are connected in parallel and in which two or more secondary cells capable of charging and discharging are connected in series, includes a constant-current control circuit provided for each of the series-connected-battery blocks.

The invention belongs to wastewater treatment field, especially relates to printing and dyeing mill wastewater treatment. The invention employs sorting and collecting physico-chemical treatment, automatic- pressure filtering and separating wastewater and further chemical treatment for active sludge, to reduce the COD concentration in primary discharged water by 15%, and meet national standard. The invention is characterized by greatly saved energy and resource and benefit for environmental and resource protection and sustainable development.

The invention provides a phase change composite, a preparation method and an application. The phase change composite is prepared from paraffin powder, expanded graphite powder, polyethylene particlesand SEBS. By adopting a material system in a special ratio, the defects that the conventional phase change energy storage material is low in thermal conductivity and required to be encapsulated in practical use to prevent leakage are overcome, thermal management efficiency is increased greatly, and popularization and application range of the phase change energy storage material is expanded.

The invention discloses a driving circuit and driving method of a liquid crystal display device and a liquid crystal display device. The driving method comprises the steps of generating a trigger signal a first period of time after the liquid crystal display device is turned off, and controlling the grid break-over voltage of a thin film transistor in the liquid crystal display device to rise in asecond period of time according to the trigger signal. The driving method can avoid pixel capacitance charge residues in the liquid crystal display device, thereby solving the screen flicker problemof the liquid crystal display device at the moment of shutdown.

This application provides a discharge control method of a lithium ion battery pack, which includes the steps of: sampling and detecting single-cell voltage of the battery pack to calculate minimum value of the single-cell voltage; when the minimum value of the single-cell voltage reaches preset discharge terminal voltage of the single cell, controlling a load to switch a discharge circuit off to stop discharging. Compared with a method in which the discharge terminal voltage of the battery pack is set manually in the prior art, the voltage management method can prolong the discharge time of the battery as more as possible, can increase the effective capacity of the battery, and prevents capacity attenuation of the lithium ion battery due to over-discharge of the single cell and prevents reduction of cycle life.

The invention provides a multifunctional electromagnetic pulse experiment instrument which comprises a wide-range adjustable DC power supply composed of two regulated power supplies; the experiment instrument also comprises a multi-frequency direct-reading and ultra-low frequency adjustable pulse frequency controller, a high voltage generator demodulated by the pulse frequency controller, a high voltage ammeter, a movable experimental component and a pulse switch signal output socket; an experiment platform with a high-voltage discharge prevention shell is constructed on the top part of the experiment instrument; the movable experiment component and an adjustable electromagnet are mounted on the platform. The multifunctional electromagnetic pulse experiment instrument not only can output the stable high-voltage direct current, but also can output the pulse high-voltage electricity with adjustable frequency and pulse width, and output the pulse magnetic field or provide independent pulse switch signals for various electromagnets. The multifunctional electromagnetic pulse experiment instrument can be adopted for conducting a plurality of high-voltage static experiments and the experiments in biological, physical and medical fields efficiently and conveniently. The invention provides an electromagnetic pulse experiment instrument which has the advantages of complete functions, convenient application, low cost and practicality for the college teaching and research.

The invention belongs to the technical field of motive power battery management and particularly discloses an automobile lithium battery discharging balance method and a balance system. Aiming at a battery pack about to be emptied, the invention provides the method and the system for realizing the balance. When the discharging is about to finish, i.e. the rest electric quantity of the battery pack is 20 percent to 30 percent, discharging balance measures are started to be used: the output voltages at two ends of the battery pack are properly reduced and are loaded to two ends of few partial low-voltage single batteries for electricity supplementing, the emptying speed of the low-voltage batteries is reduced, so all single batteries nearly reach the emptying state at the same time, and the discharging time is further prolonged. The balance method and the balance system have the advantages that differences among all single batteries are balanced, the service life of the battery pack is prolonged, meanwhile, the energy consumption is lower, the efficiency is higher, and the effect is better.

The invention relates to a mercury-free zinc pulp compound and a mercury-free zinc air battery with the compound and belongs to the field of the battery. The battery structure thereof comprises a mercury-free zinc cathode slurry, anode and cathode shells, a sealing rubber ring, a diaphragm, an anode pole and a diffusion paper; the mercury-free zinc cathode slurry is prepared from mercury-free zinc powder, inorganic gel, organic gel, surfactant, conductive macromolecule and electrolyte; the surfactant is prepared from one or more of alkyl benzene sulfonic acid, alkylbenzene carboxylic acid or derivative thereof and polyoxyenyl ether derivative. Under the condition of no mercury addition, the surfactant can enhance the interaction between the zinc powder and the zinc powder in the zinc slurry, and the lower internal resistance state in the zinc slurry still can be maintained at the rear discharging end, so that the use ratio of the zinc powder can be greatly increased and the discharge capacity and the discharge time of the zinc air battery can be increased.

The invention provides a self-breathing direct methanol fuel cell which comprises a methanol storage tank, an anode supporting plate, an anode current collecting plate, a membrane electrode, a cathode current collecting plate and a cathode supporting layer which are successively connected. The self-breathing direct methanol fuel cell is characterized in that a supporting plate and a first ventilation plate are sequentially connected between the methanol storage tank and the anode supporting plate; the supporting plate is provided with a fuel filling port and a gas releasing port, and the surface of the supporting plate in connection with the first ventilation plate is provided with a current field; and the first ventilation plate is provided with a fuel filling port and a gas releasing port, the fuel filling port of the supporting plate is communicated with the fuel filling port of the first ventilation plate, and the gas releasing port of the supporting plate is communicated with the gas releasing port of the first ventilation plate. The cell provided by the invention has the advantages that a carbon dioxide semi-enclosed region is formed so as to prevent external oxygen from entering the cell and prevent an anode from being oxidized, the property of the methanol fuel cell provided by the invention is stable, a methanol solution the concentration of which is more than 5M is utilized, and the discharging time is long.

The invention relates to a lead paste for battery starting/stopping, and a preparation method thereof. The lead paste is composed of a positive lead paste and a negative lead paste, and the positive lead paste comprises, by weight, 990-1010 parts of lead powder, 40-60 parts of red lead, 0.6-1.0 part of a conductive fiber, 2.5-3.5 parts of graphite, 1.5-2.5 parts of diantimony trioxide, 0.5-1.5 parts of stannous sulfate, 110-130 parts of water and 80-90 parts of sulfuric acid; and the negative lead paste comprises, by weight, 990-1010 parts of the lead powder, 0.4-0.8 parts of the conductive fiber, 2.5-3.5 parts of acetylene black, 8-12 parts of barium sulfate, 0.5-1.5 parts of humic acid, 1.5 -2.5 parts of lignin, 100-120 parts of water, 85-95 parts of sulfuric acid. The lead paste for battery starting/stopping and the preparation method thereof effectively solve the problems of poor battery performance, low electrode plate strength, easy loosening and softening, and short battery life.