104results about How to "Depolarization" patented technology

A vehicle lighting system for a vehicle includes an accessory module assembly that is adapted for attachment to an interior portion of a vehicle and configured to illuminate, for example, an area inside the vehicle. The module assembly includes a single high-intensity power light emitting diode that has a luminous efficiency of at least about 1 lumen per watt when the light emitting diode is operated and is preferably operated at a forward current of at least 100 milliamps. The system also includes a voltage conversion element for converting the battery/ignition voltage of the vehicle to the forward operating voltage of the light emitting diode.

The invention discloses a quick charging system for an unmanned aerial vehicle and a charging method thereof, wherein the quick charging system and the charging method belong to the field of unmanned aerial vehicle charging. The quick charging system for the unmanned aerial vehicle comprises a supporting module, a positioning module and a charging module. The supporting module is used for assisting the unmanned aerial vehicle body in landing and supporting the unmanned aerial vehicle body. The positioning module is used for performing return positioning on the unmanned aerial vehicle body so that the unmanned aerial vehicle body lands on the supporting module. The charging module is used for controlling a charging process. The charging method according to the quick charging system comprises an unmanned aerial vehicle body returning step, an image acquiring and positioning step, a quick landing step, a charging step, etc. The charging process comprises three periods, namely pre-charging, multi-step constant-current charging and pulse charging. According to the quick charging system, the supporting module is combined with other modules for forming a complete charging system, so that the unmanned aerial vehicle body can accurately and quickly land on the supporting module, thereby greatly improving charging efficiency and realizing high autonomy and convenient use.

The invention provides a variable-current charging method of a storage battery. The method comprises a constant-flow charging stage, a pulse quick charging stage and an additional charging stage. In the constant-flow charging stage, the storage battery is subjected to constant-flow charging by first charging current until a voltage value of the storage battery reaches a first preset voltage value; in the pulse quick charging stage, the storage battery is subjected to cyclic pulse quick charging in a manner of alternating positive pulse charging and negative pulse charging; when one cyclic pulse quick charging period is ended, a positive pulse current value and a negative pulse current value are reduced; meanwhile, the charging time and the discharging time are shortened; the next cyclic pulse quick charging period is carried out until the positive pulse current value reaches a second charging current value; and in the additional charging stage, the storage battery is subjected to additional charging in a constant-voltage charging manner. Through the variable-current charging method, quickly and efficiently charging a large-capacity storage battery can be achieved; the polarization phenomenon is removed; and the damages to the storage battery are reduced.

The invention provides a pixel unit drive circuit and method, a pixel drive circuit and an AMOLED (active matrix/organic light-emitting diode) display device. The pixel unit drive circuit comprises a drive unit and a reverse bias control unit. Th drive unit is used for driving an OLED (organic light-emitting diode) and connected with a scanning line. The drive unit is connected with the OLED through the reverse bias control unit which is used for breaking the connection between the drive unit and the OLED and controlling the reverse bias of the OLED during the reverse bias period. The reverse bias period is a pre-selected period during the close stage of the scanning line in each scanning cycle. According to the arrangement, the OLED is prevented from staying in the direct current bias light-emitting state for the long term, thus polarization of the organic material of the OLED is reduced.

The embodiment of the invention provides a charging method and a device, which relate to the technical field of batteries, and charge the batteries by combining two ways of step-by-step constant current and constant voltage charging and pulse charging, so as to realize fast charging and reduce the lithium evolution risk of the batteries. The charging method comprises a step-by-step stage and a pulse stage. The step-by-pulse stage comprises the following steps: performing at least one constant current and constant voltage charging cycle in the step-by-step stage; In the step-by-step phase, whenthe state parameter of the battery reaches the limit condition of lithium evolution, the device enters into the pulse phase. The technical proposal provided by the embodiment of the invention is applicable to the battery charging process.

The invention provides a formation method of a lead-acid storage battery. The method comprises the steps of firstly, carrying out multi-stage constant-current charge and constant-current discharge, and then carrying out constant-current charge, wherein the total formation time is 45h-70h, and the charge current and the discharge current are 0.05-0.2 C10. The method is used for the formation of the valve-regulated sealed lead-acid storage battery for communication; the polarization phenomenon of the battery in the formation process can be effectively relieved by the multi-stage charge and discharge under the condition that equipment investment is not increased, so that the charging efficiency and the formation efficiency are improved, and the battery capacity is guaranteed.

The invention provides a formation technology of a flexible package lithium ion battery. The formation technology comprises the following steps: heating and pressing the lithium ion battery in the formation process, and controlling the atmosphere to form current and voltage, so that a compact SEI film is formed on the electrode surface of the flexible package lithium ion battery, the cycle life ofthe battery is prolonged, and the capacity retentivity of the battery is improved.

An automatic focusing system comprising: a plurality of image pickup surfaces of an AF image pickup device for taking images of a subject for performing automatic focusing of a picture taking lens, the image pickup surfaces being placed at such positions that the length of optical paths to the image pickup surfaces differ from each other; a common optical path which is a portion of an optical path through which subject light entering the picture taking lens are supplied to the plurality of image pickup surfaces, and through which the entire subject light to be incident on the image pickup surfaces passes; a light splitting device which splits the subject light supplied through the common optical path into subject lights respectively incident on the plurality of image pickup surfaces; a focusing control device which controls focusing of the picture taking lens on the basis of contrasts in the subject images obtained through the plurality of image pickup surfaces so that a correct focus on the subject is achieved; and a conversion device which is placed at a predetermined position in the common optical path, and which converts the subject light reaching the predetermined position into non-polarized light if the subject light is polarized light, and makes the converted subject light enter the light splitting device.

The invention relates to a method for removing soluble heavy metal ions in situ from soil or mud/powdery deposits. In the method, a negative electrode and a positive electrode are directly inserted into the soil or a material deposit containing the soluble heavy metal ions, the driving power source of the negative electrode and the positive electrode is a pulse power source, and the positive of the pulse voltage output by the pulse power source is connected with the positive electrode, while the negative is connected with the negative electrode. The method provides the pulse power source capable of generating high-impact electric field force, eliminates three electrode polarization phenomena which cannot be overcome by the conventional DC kinetics method, has no secondary pollution on environment, and greatly improves the efficiency of removing the heavy metal ions from the soil or mud/powdery waste materials through in-situ migration by adopting the conventional DC kinetics method.

The embodiment of the invention provides a battery charging method and device. The battery charging method provided by the embodiment of the invention comprises the steps of carrying out pulse charging on a battery at least twice and stopping pulse charging on the battery until voltage of the battery reaches a voltage threshold; and carrying out constant-voltage charging on the battery and stopping constant-voltage charging on the battery until current of the battery reaches cutoff current, wherein each pulse charging process includes the steps of carrying out constant-current charging on the battery by using first constant current; carrying out constant-current charging on the battery by using second constant current; and standing the battery. According to the battery charging method and device, battery standing is carried out in each pulse charging process, so that the polarization phenomenon of the battery in each charging process can be eliminated, the security of the battery is improved, the cycle life of the battery is prolonged, a discharging process is avoided in each pulse charging process and the charging time is shortened to improve the charging rate.

The invention relates to battery disposal device and method. The battery disposal device comprises a current converting unit, a current supply unit, a detection unit, a discharge unit, a control unit and a master control unit, wherein the current converting unit generates current parameter variable DC current; the current supply unit controls the current converting unit to supply the DC current to a battery; the detection unit detects the state of the battery; the discharge unit controls the battery to discharge to a load; the control unit controls the current supply unit to charge or repair the battery and controls the discharge unit to discharge to the battery according to a received command; and the master control unit receives the detected state of the battery and sends the command tothe control unit. The battery disposal device and method can increase the battery repair efficiency.

The invention discloses a catalyst for catalyzing and dehydrating lactate and preparation and application thereof. The catalyst consists of alkali metal dihydric phosphate, grafted hydrophobic group and silica gel. The method for preparing the catalyst comprises the following steps of: grafting the hydrophobic group on the organosilane onto the surface of the silica gel by adopting a grafting method; impregnating the silica gel in aqueous solution of alkali metal dihydric phosphate; and preparing the hydrophobically modified silica-supportedalkali metal dihydric phosphate catalysts through roasting. The catalyst is used for catalyzing and dehydrating the lactate to prepare acrylic acid and acrylic ester. The catalyst makes the lactate highly selectively synthesize the acrylic ester, and can simplify process flow and reduce production cost and consumption of petroleum resources.

The present invention discloses a water loosing preventing rice field eel feed and a preparation method thereof. The rice field eel feed is made of the following raw materials in parts by weight: 20-30 parts of high-gluten flour, 10-15 parts of bone meal, 70-90 parts of fresh silver carps, 20-25 parts of corn oil, 80-100 parts of soybean meal, 2-3 parts of complex enzymes, 35-50 parts of wheat bran, 2-3 parts of gelatin powder, 8-10 parts of fresh pork liver, 3-5 parts of edible salt, adsorbent and an appropriate amount of water. Specifically, the water loosing preventing rice field eel feed can wrap a thin film on the surface of the conventional feed, enables feed particles to present a longer time in the water without needs of spreading feed frequently, and can also prevent the adverse impacts on rice field eels caused by water eutrophication. The addition of pork liver enables fresh and delicious smell of the rice field eel feed, which is line with the smell of food when the rice field eels are seeking food, thus is helpful for the food intake of rice field eels.

The embodiment of the invention provides a battery charging method and device. The battery charging method provided by the embodiment of the invention comprises the following steps: performing pulse charging on a battery for at least two times and stopping pulse charging for the battery until the voltage of the battery reaches a voltage threshold; performing constant-voltage charging on the battery and stopping constant-voltage charging for the battery until the current of the battery reaches a cutoff current, wherein each time of pulse charging comprises the following steps: performing constant-current charging on the battery with a first constant current; performing constant-current charging on the battery with a second constant current; resting the battery; and performing constant-current discharging on the battery with a third constant current. According to the technical scheme provided by the invention, the process of each time of pulse charging comprises the steps of resting the battery and discharging the battery, so that the polarization phenomenon generated by the battery in the charging process can be eliminated, and therefore, the safety of the battery is improved; and with adoption of a pulse charging manner, the charging time is shortened, and therefore, the charging speed is increased.

The invention discloses a lithium iron phosphate battery auto-discharge screening method. First, batteries are selected, and the voltage sudden change points of the batteries in the low-voltage stateare determined through low-current discharge. A produced battery is discharged at three currents decreasing gradually to a preset cutoff voltage, and is then charged and discharged at a low current within a narrow voltage range, in order to eliminate battery polarization to the greatest extent, make the final real voltage a sudden change voltage, and increase the accuracy of auto-discharge screening based on voltage drop. Through the method, whether a lithium iron phosphate battery meets the requirements can be determined in a short time, the production cycle of lithium batteries can be shortened, judgment is accurate, zero error can be basically guaranteed, the standing time of batteries can be shortened, and the supply rate can be improved.

The invention relates to a method for injecting electrolyte into a shell of a battery. The battery is a lithium-iron disulfide battery; the shell is provided with an open end and a closed end; and the inner side of the closed end is provided with a battery cell. The method comprises a first electrolyte injection step, wherein the electrolyte is injected into the shell through the open end, and then the shell is rotated around a vertical rotating shaft in a mode that the open end is inward and close to the rotating shaft, the closed end is outward and far away from the rotating shaft, and the open end is higher than the closed end. The electrolyte is injected into the shell of the battery by centrifugal force, so that the electrolyte is fully absorbed on the battery cell and electrode sheets, and the set discharge capacity of the battery can be realized to the greatest extent under a large-current discharge condition, and the injection time of the electrolyte can be remarkably shortened simultaneously, so that the production efficiency of the battery is greatly improved.

The invention discloses a charging method for a lithium ion battery management system. The method comprises a five-stage current continuous charging step. The state of charge of a battery is judged before charging, and then, different charging steps are selected according to the state of charge of the battery. When the state of charge of the battery changes, the charging steps of the battery are adjusted in time for charging until the battery is fully charged. The state of charge of the battery can be judged by measuring the voltage of the battery and comparing the measured voltage with presetvoltages in different charging states. According to the charging method for a lithium ion battery management system, a five-stage current continuous charging scheme is adopted, so that anode lithiumprecipitation of lithium ion batteries at low temperature is improved, the safety of batteries during lithium ion charging is enhanced, and the quantity of electricity charged into lithium ion batteries is increased.

The invention discloses a high-light through high-definition fixed-focus aspheric lens. The lens comprises six lenses, a diaphragm and an optical filter. The diaphragm is arranged in the middle section of a lens optical path and on the middle axis of the lens body. The lenses form a pupil entrance group and a pupil exit group. The pupil entrance group is arranged on a diaphragm pupil entrance side and the overall focal power is negative. A lens (A1), an aspheric lens (A2) and a lens (A3) are sequentially arranged in the optical path direction of the pupil entrance group. The lens (A3) clings to the diaphragm. The pupil exit group is arranged on a diaphragm pupil exit side and the overall focal power is positive. An aspheric lens (B1), a convex lens (B2) and a concave lens (B3) are sequentially arranged in the optical path direction of the pupil exit group. The convex lens (B2) and the concave lens (B3) are glued and fixed together via the opposite concave and convex faces. The optical filter is arranged in the light exit direction of the pupil exit group. According to the invention, the aspheric lenses are used in the lens, so while light passing quantity of the lens is increased, the lens aberration can be controlled in an acceptable range.

The invention discloses a flexible package lithium battery core formation process, which at least comprises the following steps: S1, pre-pressing; S2, carrying out first formation charging; S3, carrying out second formation charging; S4, carrying out pulse charging; S5, carrying out third formation charging; and S6, carrying out exhausting, packaging and curing, wherein the S2 comprises charging to 20%-30% SOC at a constant current of 0.02-0.06 C, the S3 comprises charging to 40%-55% SOC at a constant current of 0.1-0.3 C, and the S4 comprises charging to 60%-70% SOC at a constant current of 0.3-0.5 C. According to the invention, gas bubbles between an electrode sheet and a diaphragm can be removed, so that it is ensured that a uniform and stable SEI film is formed on the surface of the electrode sheet, the internal resistance of a battery core is effectively reduced, and the cycle performance of the battery core is improved; and the charging current is increased progressively along with the electric quantity and is only charged to 60-70% SOC, so that the battery core formation time can be shortened, and the production efficiency is improved.

The embodiment of the invention provides a charging method and device. The charging method is characterized in that the charging for a battery includes a first charging stage and a second charging state, wherein the first charging state comprises at least two charging sub-steps; the battery is sequentially subjected to first constant-current charging, second constant-current charging, constant-current discharging and third constant-current discharging in each charging sub-step; the battery is subjected to constant-voltage charging in the second charging state. According to the technical scheme provided by the embodiment of the invention, the charging method and device can solve the problem of high safety risk, caused by the increase of the charging speed, of the battery in an existing charging method, can be solved.

The invention provides an intelligent negative pulse repairing charger, relating to the technology as follows: a switching power supply technology is adopted, a semiconductor power device is used as a switch, and commercial electricity is converted into voltage and current required by accumulator charging. The charger is provided with a charger case, and an electronic circuit comprises a rectifier bridge, an MOSFET (metal-oxide-semiconductor field effect transistor), a high frequency pulse transformer, a fast recovery diode rectifying circuit, a sampling circuit, a negative pulse loop, a main control chip IC1, a digital tube display, a photoelectric coupler IC3 and a power supply management chip IC2, wherein the input terminal of the rectifier bridge is connected with an alternating current power supply, the output terminal of the rectifier bridge is connected with the high frequency pulse transformer by the MOSFET, the output terminal of the high frequency pulse transformer is connected with the fast recovery diode rectifying circuit, the direct current output terminal of the fast recovery diode rectifying circuit is connected with the sampling circuit, a singlechip IC1 is connected with the photoelectric coupler IC3, the photoelectric coupler IC3 is connected with the management chip IC2, the power supply management chip IC2 is connected with the MOSFET, and the main control chip IC1 is also respectively connected with the sampling circuit, the negative pulse loop and the digital tube display.