203results about How to "Improve charge efficiency" patented technology

The present invention relates to a contact-less power supply magnetically coupled to a battery device having a receiving coil therein, for contact-less charging the battery device, the contact-less power supply having a sending coil array including a plurality of sending coils for inducing a charging power to the receiving coil; and a driving means for detecting a sending coil magnetically coupled to the receiving coil and selectively driving only the detected sending coil.

A portable solar cell charger and methods of charging electronic devices using the same are disclosed. A portable solar cell charger comprises at least one solar cell plate holding a plurality of solar cells; a film with reformed surface formed on the solar cell plate; a power control part supplying a load side with power after perceiving a voltage required from the load side; and a case holding the solar cell plate and the power control part. A method of charging an electronic device using a solar cell charger comprises perceiving a voltage required from a load side using a microprocessor; converting the perceived voltage using D / A converter; comparing the converted voltage with a voltage from a solar cell plate; integrating signals from a comparator and a pulse generator; adjusting the voltage from the solar cell plate; and supplying the voltage from the solar cell plate into the load side.

A method, apparatus and computer program product for wireless charging are provided. An indicator displayed on a wireless device may assist a user in placing the device in a more efficient position on a wireless charger. The indicator may comprise an image, and moving the device such that the image aligns with an image on a wireless charger places the device is in a more efficient charging position. Other types of indicators may be displayed to assist a user in moving a device to a more efficient position on the wireless charger.

A charging apparatus and method for charging a battery of a mobile terminal using a thin film printed solar cell. The apparatus has an outer case including electrochromic elements and a thin film printed solar cell. A control unit controls charging of the battery so that a color of the electrochromic elements is changed into a transparent color and sunlight is transmitted to the thin film printed solar cell disposed under the electrochromic elements. Also, the control unit controls charging of the battery such that a color of the outer case is automatically changed into a transparent color so that sunlight is transmitted to the thin film printed solar cell. Also, the color of the electrochromic elements can be changed according to the user's request so that the color of the outer case is changed into a desired color.

For eliminating waste of ink and achieving high charging efficiency with a reduced charging time where a printing head is equipped with a second tank for reserving a predetermined amount of ink and a supply system is configured to supply ink from a first tank to the second tank intermittently, the second tank is provided with a variable internal volume. The internal volume is varied to cause the second tank itself to function as an actuator for charging ink and performing a venting process. Specifically, the internal volume is forcibly reduced to cause a reverse flow of a gas residing in the second tank along with ink into the first tank, which makes it possible to generate of waste ink that is released to the outside. A normal charging operation can be completed simply by causing a change in the opposite direction (the direction of increasing the internal volume). Relatedly, the second tank may be provided with a member for holding ink and generating a negative pressure originating from an elastic force. With connection of the first tank and the member, the pressure in the second tank is reduced to cause the member to expand, thereby introducing ink into the same. This introduction is stopped by regulating the expansion with a displaceable unit which expands when the pressure is reduced. The regulation is performed at such a position that the negative pressure generated in the member by canceling regulation is in equilibrium with an ink meniscus-holding ability of the printing head.

An anode active material for a lithium secondary battery having a high capacity and a high efficiency of charge discharge characteristics. The anode active material includes a silicon mono-phase and an alloy phase formed of silicon with a metal element at least one selected from the group consisting of Ti, Ni, Cu, Fe, Mn, Al, Cr, Co, and Zn. The anode active material is a powder in which the silicon mono-phase is uniformly distributed in a matrix of the alloy phase, has particle size distribution defined as D0.1 and D0.9, and the value of D0.1-D0.9 is in a range from about 3 μm to about 15 μm.

An electrochemical cell with an alkali metal containing anode having high discharge capacity, charge efficiency and low self-discharge. The addition of at least one nitramide or dinitramide salt of a metal cation to the electrochemical cell electrolyte unexpectedly lowers first cycle irreversible capacity, adds higher cycle life, lowers self-discharge and beneficially addresses several additional degrees of freedom with respect to electrolyte solvent selection while providing higher charge capacity. Additives include the lithium metal salts of nitramide or dinitramide, and the electrolyte consists essentially of a lithium metal salt dissolved in a at least one of an aqueous solvent, molten salt solvent system and a non-aqueous solvent mixture of at least one of organic ethers, esters, carbonates, acetals.

The invention discloses an integrated bootstrap high voltage driving chip and a technological structure thereof. Parasitic high voltage diodes realized by the integration technology in a high voltage level shift circuit are ingeniously utilized to charge a bootstrap capacitor, wherein the power terminal of the high voltage level shift circuit is a high side floating power supply VB, and the reference ground is floating voltage PGD. The PGD is controlled by a bootstrap control circuit. A first parasitic diode and a second parasitic diode are arranged between the VB and the PGD. The bootstrap control circuit is controlled by a high side signal and a low side signal. When the low side output signal LO is high level and the high side output signal HO is low level or the low side output signal LO is low level and the high side output signal HO is low level, the output PGD of the bootstrap control circuit is high level VCC. The VCC performs unidirectional charging to an external bootstrap capacitor through the first parasitic diode and the second parasitic diode. The integrated bootstrap high voltage driving chip is high in charging speed, high in charging efficiency, simple in circuit structure and low in cost.

The invention relates to the technical field of underground explosive trucks and discloses an underground on-site explosive dosing and charging truck. The underground on-site explosive dosing and charging truck comprises a truck body, a chassis disposed on the truck body, a mechanical arm automatic hole finding mechanism and a charging conveying mixing mechanism which are disposed on the chassis, and a hydraulic system and an electric control system which are matched with the mechanical arm automatic hole finding mechanism and the charging conveying mixing mechanism, wherein the charging conveying mixing mechanism comprises an automatic charging module used for mixing and charging emulsion matrix to form emulsion explosives, a charging tube which is connected with the automatic charging module and used for conveying the emulsion explosives, and an automatic tube conveyor for automatically conveying the charging tube; the mechanical arm automatic hole finding mechanism is matched with the automatic tube conveyor and used for performing blast hole position alignment on the head end of the charging tube. The underground on-site explosive dosing and charging truck has the advantages that mechanical hole finding, automatic tube collecting and conveying and automatic blast hole filling are achieved, charging efficiency is increased, operator labor intensity is lowered, and operator safety conditions are improved effectively.

An organic electroluminescent device includes an anode, a cathode and an organic functional layer between the anode and the cathode, in which at least one of hole injection layer, hole transport layer and electron transport layer includes a host material and an inorganic inactive material doped in the host material, and the inorganic inactive material is a halide, oxide or carbonate of metal.

Provided are a wireless ultrasound probe and a method of charging a battery included in the wireless ultrasound probe by receiving wireless power that is directionally transmitted toward a position of the wireless ultrasound probe and focusing received wireless power.

An ECU of an electric vehicle supplies a target rotation speed RT having a value corresponding to the temperature TB of a main battery to a cooler, controls a main DC / DC converter such that the SOC of an auxiliary battery is in a predetermined range SOCL to SOCH less than 100% when a cooling fan in the cooler is driven at the target rotation speed (RT), and controls the main DC / DC converter such that the SOC of the auxiliary battery is 100% when the cooling fan is not driven at the target rotation speed (RT).

A power storage system for a vehicle includes a battery, a temperature sensor, a battery heater, a charger, and a controller. The battery is configured to supply electric power to a motor for traveling of the vehicle, and configured to be charged with external power supplied from an external power supply. The temperature sensor is configured to detect a temperature of the battery. The battery heater is configured to raise the temperature of the battery. The charger is configured to be connectable with the external power supply, and deliver the external power to the battery and the battery heater, respectively. The controller is configured to perform charge control. The charge control is a control that charges the battery with the external power. The controller is configured to store a map. The map specifies, for each temperature of the battery, a ratio of a temperature-elevating power supplied to the battery heater to a maximum power of the external power at the time when a charging time is minimized. The controller is configured to calculate the ratio, using the map, from the temperature of the battery measured at the time when charging is started. The controller is configured to perform temperature regulation control during charging, using the temperature-elevating power corresponding to the calculated ratio. The temperature regulation control is a control that supplies a part of the external power to the battery heater during charging so as to raise the temperature of the battery.

A photocatalyst material and a photocatalyst device capable of generating hydrogen from water by radiation of sunlight at high efficiency. The photocatalyst material according to the present invention includes a nitride-based compound semiconductor obtained by replacement of part of Ga and / or Al by a 3d-transition metal. The nitride-based compound semiconductor has one or more impurity bands. A light absorption coefficient of the nitride-based compound semiconductor is 1,000 cm−1 or more in an entire wavelength region of 1,500 nm or less and 300 nm or more. Further, the photocatalyst material satisfies the following conditions: the energy level of the bottom of the conduction band is more negative than the redox potential of H+ / H2; the energy level of the top of the valence band is more positive than the redox potential of O2 / H2O; and there is no or little degradation of a material even when the material is irradiated with light underwater.

The invention relates to a static emulsification-pumped latex matrix on-line continuous sensitized emulsion explosive manufacturing process which comprises the following steps: A. preparing a water phase solution, and preparing a compound oil phase; B. carrying out pre-emulsification mixing and static emulsification; C. cooling; D. pumping the latex matrix; E. mixing; F. forming a plastic film, and sealing; and G. cooling the explosive cartridge, and packing the explosive cartridge. The invention enhances the intrinsic safety of explosive charging, implements high-productive-capacity continuous explosive charging and on-line continuous sensitization, enhances the productive capacity of the existing low-temperature sensitized production line steel belt (maximum 100%), reduces the on-line explosive storage amount, and enhances the explosive charging efficiency.

A contactless charging method according to the present invention is applied to a contactless charging system 1 which comprises a transmitting unit 10 having a primary coil 11 and a receiving unit 20 having a secondary coil 21 and which charges a battery 30 electrically connected to the secondary coil 21 by the electromagnetic induction generated between the primary coil 11 and the secondary coil 21 and which supplements the charging efficiency of the battery 30 by varying a charging frequency used in the electromagnetic induction in proportion to the charging efficiency of the battery 30 that varies according to the position of the secondary coil 21 relative to the primary coil 11. The contactless charging method comprises: a step of detecting a charging frequency when a charging operation is performed by enabling the primary coil 11 to get close to the secondary coil 21; and a step of outputting the charging efficiency of the battery 30 acquired from the detected charging frequency such that a user may know the charging efficiency.

A corona discharge device includes a charging-section high-voltage electrode unit including a plurality of charging-section high-voltage electrodes, and a charging-section ground electrode unit includes a plurality of charging-section ground electrodes formed by flat plates. The plurality of charging-section high-voltage electrodes are arranged at intervals in a direction intersecting an airflow in an air path, and are connected to one another at at least one longitudinal end by a conductive frame portion. The plurality of charging-section ground electrodes are disposed between the charging-section high-voltage electrodes in an orientation such that flat surfaces thereof are substantially parallel to the airflow in the air path, and are connected at at least one longitudinal end by a conductive frame portion. The plurality of charging-section high-voltage electrodes and the plurality of charging-section ground electrodes are alternately stacked in the direction intersecting the airflow in the air path to be spaced apart from each other.

An air battery system has a sealed air battery cell (10) having: an air electrode having an air electrode layer (4) containing a conductive material and an air electrode power collector (6) for collecting electric power from the air electrode layer; a negative electrode having a negative electrode layer (3) containing an negative electrode active material that adsorbs and releases metal ions and a negative electrode power collector (2) for collecting electric power from the negative electrode layer; a separator (7) provided between the air electrode layer and the negative electrode layer; and a sealed air battery case (1a, 1b). The air battery system also has a depressurization portion (20) that reduces the internal pressure of the sealed air battery cell to below the atmospheric pressure.

The invention discloses a method of optimizing a position of a base station in a radio frequency charging wireless sensor network. One feature that radio frequency waves emitted by two radio frequency base stations generate an interference phenomenon at one sensor node is combined, through overlay analysis on two columns of radio waves at the same charging waiting sensor node, a relationship between a position difference between the two radio frequency base stations and a charging efficiency of the charging waiting sensor node is obtained, and two base station positions with the optimized charging effects in the overall network are thus calculated. The method can be applied to the radio frequency charging wireless sensor network, the charging efficiency of the charging waiting node can be greatly improved, the service life of the overall wireless sensor network is prolonged, and the downtime of the overall system is reduced.

The invention relates to a deep-hole smooth tunnel blasting system. The deep-hole smooth tunnel blasting system comprises a multi-shaft drilling mechanism and a deep-hole smooth blasting mechanism; the drilling mechanism comprises a drill rod arranged on an adjusting bracket, the drill rod is driven by a horizontal driving mechanism to move horizontally and implement hole digging operation, and a spatial position, located on the adjusting bracket, of the drill rod can be adjusted; the deep-hole smooth blasting mechanism comprises a plurality of explosive material charging tube standard joints arranged in a blasting hole; tube openings of the explosive material charging tube standard joints are sequentially connected to form a blasting tube, and trays are arranged on the connecting parts of adjacent explosive material charging tube standard joints for supporting explosive materials; a base is arranged at one end of the blasting tube, and a top cover is arranged at the other end of the blasting tube; and a through hole is formed in the tray surface of the tray for penetrating of a detonating cord, the detonating cord sequentially and upwardly penetrates through the through hole in the tray from the base and leads out from a through hole formed in the top cove of the blasting tube, and cracks are further arranged on the tray. The deep-hole smooth tunnel blasting system can improve the drilling efficiency, and weaken the influence of complex geological environment of a coal mine on explosive material charging at the same time, and premature overflowing of explosion gas is prevented.

The invention discloses a wireless charging method and a wireless charging device and relates to the technical field of the wireless charging. The wireless charging method includes obtaining state information of wireless energy receiving equipment; obtaining charging efficiency distribution of wireless energy emitting equipment according to the state information. The wireless charging method and the wireless charging device obtain the charging efficiency distribution of the emitting equipment according to the state information of the receiving equipment so as to provide a reference to obtain the optimal charging efficiency of the wireless charging.

The present invention relates to a redox flow battery and a redox battery system, and more particularly, to an electrode constituting a redox flow battery, a method of fabricating the electrode, an apparatus and method for fabricating electrolyte for a redox flow battery, a device and method for measuring a selected ion concentration of electrolyte constituting a redox flow battery, and a stand-alone redox battery system. A stand-alone redox battery system according to the present invention includes a micro hydroelectric power generating device and a redox battery. The micro hydroelectric power generating device includes: a feathering paddle wheel that is rotated by water introduced through a conduit; and a direct current generator that generates direct current according to the rotation of the feathering paddle wheel. The redox battery includes: a stack-type electrode assembly having a stacked structure of unit electrodes; a first electrolyte tank and a second electrolyte tank, which store, respectively, active materials having different oxidation levels; and a first pump and a second pump, which are connected to the first electrolyte tank and the second electrolyte tank, respectively, to circulate the stored active materials through the stack-type electrode assembly, thereby performing charging and discharging operations.

The invention relates to a waterproof rock expanded ammonium nitrate explosive and a process for preparing the same. The ammonium nitrate explosive consists of 90 to 94 percent of nitrate oxidizing agent, 3 to 5 percent of combustible agent and 3 to 5 percent of composite oil phase, wherein the composite oil phase consists of 10 to 62.5 percent of explosive special grease, 32.5 to 80 percent of special agent and 5 to 15 percent of surface-active agent. The process comprises the following steps that the nitrate oxidizing agent and water are mixed to form water phase so as to be made into expanded ammonium nitrate through crystallization and expansion; the explosive special grease and the special agent are fully molten and mixed, and then added with the surface-active agent to be mixed so as to form the composite oil phase; then, the expanded ammonium nitrate, the composite oil phase obtained in the previous steps and the dry combustible agent are mixed evenly, thereby obtaining the ammonium nitrate explosive. The process not only forms a tight firm oil film coating on the surface of the expanded ammonium nitrate, but also turns the hydrophilic surface of an expanded ammonium nitrate solid into a hydrophobic surface, thereby obtaining the effects of no moisture absorption in a humid environment and slower moisture absorption in a watered environment; moreover, the waterproof rock expanded ammonium nitrate explosive is nonlumping and has excellent free-running property.

The invention discloses a positioning system for wireless charging of an electric vehicle. The system comprises a primary side unit and a secondary side unit; the primary side unit comprises a primaryside power coil, auxiliary coils and a communication signal transmitting module, and the secondary side unit comprises a secondary side power coil, a communication signal receiving module and a secondary side control module; the communication signal transmitting module connected to the auxiliary coils generates communication signals including ID information of the auxiliary coils and applies thecommunication signals on the auxiliary coils, the communication signals are transmitted to the secondary side power coil through coupling between the auxiliary coils and the secondary side power coil,the amplitudes and IDs of the communication signals are obtained through the communication signal receiving module and the secondary side control module, by calculating the amplitude values of the communication signals of all the auxiliary coils, the position, relative to the primary side power coil, of the secondary side power coil can be obtained, and therefore the secondary side power coil ispositioned. According to the positioning system, just by additionally arranging a small amount of additional hardware, the position of the secondary side power coil in a wireless charging system of the electric vehicle can be quickly and accurately measured.

The embodiment of the invention discloses an unmanned aerial vehicle charging method, device and system. The method comprises the steps of: performing identity authentication of an unmanned aerial vehicle when a charging request transmitted by the unmanned aerial vehicle is received; if the identity authentication is passed, determining the charging priority of the unmanned aerial vehicle according to related factors of the charging request of the unmanned aerial vehicle, where the related factors comprise task information currently executed by the unmanned aerial vehicle, a state of charge and a distance to a charging range; determining a target charging track corresponding to the charging priority, and sending a corresponding charging flight path to the unmanned aerial vehicle; and if the condition that the unmanned aerial vehicle enters the target charging track according to the charging flight path is detected, controlling a transmitting antenna array to transmit a microwave signalso as to charge the unmanned aerial vehicle. By adopting the technical scheme, the charging queuing problem of unmanned aerial vehicles is solved, and the charging efficiency is improved.