4223results about How to "Improve charging efficiency" patented technology

A radio frequency (RF) charging system is capable of charging an RF device on a display panel to increase charging efficiency. The RF device generates a response signal upon receiving an RF signal. The RF charging system includes an antenna set having a plurality of antennas, a switch unit, an RF module and a microcontroller unit (MCU). The MCU controls the switch unit to select one antenna from the antenna set. The antenna is able to receive the response signal and is used for transmitting the RF signal, thereby charging the RF device.

The present invention provides a battery charger capable of charging a plurality of secondary batteries which are used in different types of apparatuses, such as an electric vehicle and a mobile power supply unit, in a simultaneous or concurrent manner without largely occupying an installation space on the ground. A DC power supply section 22 includes a plurality of DC stabilized power supply circuits each operable to supply an output according to required electric power, therefrom in an independent manner. Specifically, based on information from each of a plurality of secondary batteries, and information set up / input through a setup / input section, one of or a combination of two or more of the DC stabilized power supply circuits is selected for each of the secondary batteries. Then, an electric power supply line between the selected one of or the selected combination of two or more of the DC stabilized power supply circuits and each of the secondary batteries to be charged is configured, and an output of the selected one of or the selected combination of two or more of the DC stabilized power supply circuits is adjusted. This makes it possible to configure respective electric power supply lines for the secondary batteries to allow the secondary batteries to be concurrently charged, and adjust respective electric power amounts to be supplied to the secondary batteries, individually.

Methods and device for battery charging and diagnosis provide a measuring batter energy state in which charging strategy alternate with the minimize balance between battery energy state and charging energy in which the balance is existed in battery energy barrier. Variance battery energy barrier derives adaptive charging cycle and charging protection in to approach the requirements of safety, full charge and high performance for lead-acid battery. The charging cycle derives protection mode to adapt the initial battery energy barrier state, and derives diagnosis mode to adapt electrolyte activities diffusion state, and derives the charging mode in optimum strategy to adapt polarization, storage and saturation cycle by using measure battery energy barrier, and derives the alert indication mode to result the charging cycles and diagnosis, in which the output charging energy is derived as continuous and minimum energy in inhibit of reduce efficiency due to the violent agitation and the fluctuation phenomenon in appearance in charging cycle. This invention comprise Primary power supply unit, measurement and control unit, secondary side control unit and alert / indication unit to feature the functions with stable, safety, full charging, high efficiency, diagnostic and longevity charger.

The present invention discloses the present invention discloses a power toothbrush that includes a body portion 105. An elongated level arm 102 extends from one end of the body portion to a toothbrush head 101 disposed at a distal end of the toothbrush. The toothbrush head includes a plurality of brush bristles. The elongated lever arm 102 is mounted on a vibrating pivot 104 driven by rotational DC motor engaging and pushing a set of permanent magnets attached to a two-arm fork rotating along the lever arm 102. In a preferred embodiment, the DC motor drives a three-leg permanent magnets each disposed at a 120-degree phase from each other for driving the two-arm fork for generating a vibration that three-times the frequency of the DC motor's rotational frequency.

A wireless charger of an inductive coupling type for charging a portable device provided with a rechargeable built-in battery having a second coil, includes a housing provided with a touch pad on one surface; a first coil retained within the housing; and a driving means for horizontally moving the first coil in a plane parallel to the one surface on which the touch pad is installed, wherein when the portable device is placed on the touch pad, the touch pad senses the position of the portable device to activate the driving means and displaces the first coil to a position facing the second coil.

The invention discloses a charging adapter, a terminal and a charging control method, and aims to solve the problem that the charging current is difficult to increase in the prior art. The charging adapter comprises an alternating-current transformer, a direct-current transformer, an external charging chip and a micro controller. The output end of the alternating-current transformer is connected with the direct-current transformer and the external charging chip. The micro controller is used for causing the alternating-current transformer to provide direct-current output and causing the direct-current transformer to carry out direct current transformation and output after the charging adapter and the terminal are effectively connected, and used for causing the external charging chip to charge the terminal after handshake connection between the charging adapter and the terminal is established. By adopting the charging adapter provided by the embodiment of the invention, the charging current can be increased, and the charging efficiency can be improved.

The invention belong to the technical fields of low-voltage power distribution and power electronics, and relates to a battery charging and replacing station for electric vehicles. In the battery charging and replacing station for the electric vehicles, battery replacement and separated-box charging take the priority and entire vehicle charging takes the secondary. The battery charging and replacing station can satisfy the requirement of replenishing electric energy for large-size commercial vehicles and small-size passenger vehicles. In addition, a warehousing type automatic battery replacing system is adopted so that the functions of automatic battery replacement and automatic warehousing in / out management are achieved, and a separated-box charging system can be used for charging the batteries.

The invention provides an electromagnetically shielded enclosure for personal electronic device security, comprising a lower enclosure having a receiving space for at least one electronic devices disposed on a base portion of the lower enclosure. An upper lid is structurally engaging with the whole lower enclosure to form an electromagnetically shielding structure. A wireless charging element is configured on the lower enclosure for wirelessly charging to provide power to at least one electronic device.

The present invention is an automatic equalizing charge device which uses discharging network formed by MOS tube connecting with power resistance in series to replace power switch and bypass flow network formed by it to execute the automatic equalizing charge for series battery group in quick and safe way with in existing equalizing charge technique including series battery group waiting for charge, real time collecting and isolation circuit for battery voltage signal, main control circuit board, contravariant charging power source, patrol inspection and indication circuit of battery voltage,temperature transducer, isolation driving circuit, power source and bypass flow network formed by it.

The invention discloses a single / multi-layer magnetic conductive sheet for wireless charging and a preparation method thereof. The single-layer magnetic conductive sheet comprises a layer of magnetic slice. Multiple strips of cracks are uniformly distributed on the slice and divide the slice into multiple fragment units. Gaps of the cracks are filled with insulation medium, so fragment units on two sides of the cracks are mutually insulated. The single-layer magnetic conductive sheet also comprises a double-faced adhesive tape which is adhered to one face of the magnetic slice. A protection film formed by the insulation medium is formed on the other face of the magnetic slice. The preparation method comprises steps of heat treatment, adhesion of the double-faced adhesive tape, crack processing, gum dipping processing and drying and curing processing. According to the invention, inductance value and quality factor of a charging coil are increased, charging efficiency is increased and loss is reduced. The continuously prepared magnetic conductive sheet is characterized by controllable magnetic conductivity, continuous production, convenient operation and simple insulation processing.

Deterioration of a power storage device is reduced. Switches that control the connections of a plurality of power storage devices separately are provided. The switches are controlled with a plurality of control signals, so as to switch between charge and discharge of each of the power storage devices or between serial connection and parallel connection of the plurality of power storage devices. Further, a semiconductor circuit having a function of carrying out arithmetic is provided for the power storage devices, so that a control system of the power storage devices or a power storage system is constructed.

The electronic control unit sets a target value of a charging amount of the electrical storage device and increases the charging amount to the target value during traveling on the freeway. The electronic control unit computes a first travel cost being cost per unit travel distance of fuel used when the EV travel is made by using the electric power charged in the electrical storage device at a time when the HV travel is made on the freeway, and the second travel cost being cost per unit travel distance of the electric power used when the EV travel is made by using the electric power charged in the electrical storage device by the charging mechanism at the destination. The electronic control unit sets the target value on the basis of a comparison result between the first travel cost and the second travel cost.

The present invention discloses a lead-acid battery charging method, multiple charging modes are set. In the normal mode, according to battery capacity, charge batteries in multi-stages. The corresponding charger is disclosed which comprising of: high-power switch power supply, switch circuit, impulse charge-discharge circuit, voltage and current detecting circuit, charge mode switch module and micro-processor. Comparing to present technique, the present invention sets multiple charge modes, charges in multi-stages, meets the charge requirement in all different conditions furthest, and benefits for prolonging the service life of lead-acid battery. The pulse charge-discharge circuit of present invention realizes discharge energy circumfluence by capacitance serial-parallel conversion, uses high inductance converting steep wave pulse to ladder-type pulse, comparing to traditional pulse charge-discharge circuit using big resistance charge and discharge, reduces the energy loss and loss of rapid pulse to lead-acid battery electrode slices.

The invention provides an electric vehicle intelligent queuing method capable of improving charging efficiency. The method is characterized by comprising the following steps that firstly, an electric vehicle driver is in connection with an intelligent charging network and a vehicle-mounted computer of an electric vehicle through an intelligent terminal; secondly, the intelligent terminal receives electric vehicle information transmitted by the vehicle-mounted computer in real time, wherein the electric vehicle information comprises electric vehicle serial numbers, residual electricity quantity, driving mileage and charging early-warning signals; thirdly, after the intelligent terminal receives the charging early-warning signals, the intelligent terminal is in communication with the intelligent charging network server and issues a charging request to the intelligent charging network server, ..., and eleventh, the turned electric vehicle is connected with an intelligent charging pile to be charged. According to the method, through a smart phone, the charging pile can be looked for, and through the residual electricity quantity of the electric vehicle, waiting time and predicated charging time required by charging several closest charging piles can be accurately predicated, the queuing efficiency is improved, and the queuing time is shortened.

The invention provides a wireless charging sending device, a wireless charging system and a charging control method thereof. The sending device comprises an emission coil used for emitting electricity energy of the sending device, an oscillating and frequency-modulating module used for enabling the emission coil to generate LC resonance and modulating the capacitance in the LC resonance so as to change the resonance frequency of the LC resonance, an emission end sampling module used for collecting voltage and currents of the sending device, a first control module used for controlling the resonance frequency of the LC resonance in the oscillating and frequency-modulating module and controlling the charging energy sending process according to the collected voltage and the collected currents of the sending device, the voltage of a receiving device and resonance frequency corresponding to the highest charging efficiency, a first communication module used for wireless communication between the sending device and the receiving device, and a power supply module. The sending device, the charging system and the charging control method can realize the adjustment of the resonance frequency of the LC resonance so as to have the advantage of improving the charging efficiency of the charging system.

The invention discloses a V2G technology-based power distribution scheduling control method for electric vehicles. According to the power distribution scheduling control method, besides that the influences of charge and discharge power of the electric vehicles are considered, the limiting factors of the capacity of a power distribution network, technical conditions of the electric vehicles and the like are also considered; the traffic factors of drive routes, charging / discharging access and the like of the electric vehicles are further considered; optimized charging and discharging scheduling strategies, for the electric vehicles, conforming to the reality are comprehensively determined; charging and discharging of the electric vehicles are controlled by a V2G system; and the power distribution scheduling control on the electric vehicles is achieved. The embodiment and related data show that according to the V2G technology-based power distribution scheduling control method for the electric vehicles, the negative effects on the system reliability due to the fact that the electric vehicles are accessed on a large scale can be effectively improved; the load utilization rate of the power distribution network is improved; the load peak and off-peak difference of the power distribution network is reduced; and improvement of power distribution scheduling economical efficiency of the electric vehicle and power distribution network operation economical efficiency is helped.

In a stacked display device with light-emitting units composed of organic layers and stacked together, the use of a stable material in at least a portion of a charge generation layer makes it possible to achieve improvements in environmental stability and also to attain an improvement in the efficiency of injection of charges from the charge generation layer into the light-emitting units. The display device can be readily fabricated. In a display device (11) provided with a plurality of light-emitting units (14-1)(14-2), each of which includes at least an organic light-emitting layer (14c), stacked together between a cathode (16) and an anode (13), and also with a charge generation layer (15) held between the respective light-emitting units (14-1)(14-2), at least a portion of the charge generation layer (15) is composed of an oxide or fluoride which contains at least one of alkali metals and alkaline earth metals.

The invention discloses a lithium battery based pure electric automobile charging system. The charging system includes a power supply device, a vehicle-mounted charger, a main relay, a battery management controller, a lithium battery pack, and a vehicle control unit; the power supply device provides 220 V alternating current and can emit a control guiding signal; the vehicle-mounted charger is responsible for converting the alternating current output by the power supply device into direct current desired by lithium battery charging; the main relay is arranged in the lithium battery pack, is controlled by the vehicle control unit, and can determine on / off of a high voltage loop; the battery management controller is used for monitoring a state of the lithium battery pack; and the vehicle control unit communicates with the vehicle-mounted charger and the battery management controller through a CAN bus. The invention also provides a lithium battery based pure electric automobile charging method. The vehicle controller can monitor and control the whole charging process, and the vehicle safety can be effectively improved during charging through a fail protection strategy during charging.

A method for enhancing efficiency of charge pump circuit, and a charge pump control selector are provided. Power consumption of output, delivered from the charge pump unit to the load circuit, is detected. A sample signal is obtained and compared with a reference signal to generate a comparison signal. The comparison signal is converted to a control signal to provide feedback for tuning the input frequency of the charge pump unit. The detection of load is categorized in two detection modes, the voltage detection mode, and the current detection mode. The detection modes detect variations of ripple amplitudes of the output voltage of the charge pump circuit and variations of the load currents. The comparator converts the sample signal to a comparison signal. According to the comparison signal, the control method of the controller is determined. The controllers are categorized as continuous controller and discontinuous controller.

The invention belongs to the technical field of the Internet of Things, and provides a method for reserving a charging pile for charging and a server. First information of charging piles is obtained, then idle charging pile information is pushed to a user according to a charging request sent by the user, the user can reserve for charging according to the pushed charging pile information, and after the user succeeds in reservation, the user enters a parking space corresponding to the reserved charging pile to perform charging according to a reservation order. The problem that the user cannot find an idle charging pile when needing charging can be solved, and the efficiency of the user searching for the idle charging pile is improved. Through the charging state of the charging pile and the parking space state sent by an induction device of the parking space corresponding to the charging pile, whether the current charging pile can charge a vehicle can be accurately obtained in real time, so that charging pile information obtained by the user is accurate, and the charging state of the reserved charging pile and the corresponding parking space sate can be checked in real time. The time of user for searching for a charging pile is reduced, and the efficiency of the user searching for the charging pile to perform charging is improved.

A method for operating a wireless charging device includes detecting a chargeable terminal, detecting a valid block coil according to information transmitted from the chargeable terminal, switching on the valid block coil, and controlling a current supply to the valid block coil. A terminal includes a receiving coil configured to induce a current in response to receipt of wireless power, an induced voltage detection unit to measure an induced voltage generated by the induced current, and to generate induced voltage information, and a communication unit to transmit the induced voltage information to a wireless charging device.

The method includes following steps: in procedure for charging accumulator in constant electrical current, pulse current is added in good time to carry out discharge; monitoring variety of charging and discharging time values to determine state of charging accumulator; controlling quick pulse charging operation for accumulator based on charging state. Eliminating polarization phenomena quickly and effectively when charging accumulator, the invention increases speed and shortens charging time, and raises charging efficiency. Especially, the invention avoids undercharge from occurring in area, where environment of electric grid is execrable so as to prolong service life of accumulator.

A smart lead-acid battery (dis)charging management system comprised of one or a plurality of identical smart battery unit with each including a controller, a lead-acid battery, and a sensor switch device working together with a alternator and a voltage regulator to upgrade charging efficiency, achieve consistent capacity among batteries, and isolate malfunctioning or failing battery to extend service life of the battery.

The invention discloses an intelligent charging method. The intelligent charging method includes detecting state of charge of a patrol robot; sending a pre-charge request when the detected state of charge is lower than the set threshold value; establishing the marriage relation according to the received per-charge request; verifying identity of the patrol robot within the charging range based on the established marriage relation; starting a charging power supply for the verified patrol robot. According to the arrangement, special charging request of the patrol robot is met through methods including charging reserve and start and stop controlling of the charging power supply, the problem that multiple patrol robots need to be charged is solved, low-carbon and energy-saving effect is achieved, wireless charging technology is adopted, charging efficiency is improved, and element cost is lowered; manual work is free during the whole charging of the patrol robot, and the actual automation and intelligentization is realized. The invention further provides an intelligent charging system, the patrol robot and the charging power supply.

An electronic device and a method for controlling transmission / reception of wireless power by the electronic device are provided. The method includes sensing at least one external electronic device, selecting at least one wireless power transmission / reception conductive pattern element corresponding to the sensed at least one external electronic device, and transmitting / receiving wireless power to / from the sensed at least one external electronic device by using the selected at least one wireless power transmission / reception conductive pattern element.

The invention discloses an under-voltage protection method of a high-voltage half-bridge driving chip and a high-voltage half-bridge circuit. According to the method, when low-side power voltage VCC is lacking, an under-voltage protection circuit blocks high-end and low-end signal channels; if the low-side power voltage VCC is greater than a low-side under-voltage threshold VCCU and high-side power voltage VBS is smaller than a high-side under-voltage threshold VBSU, low level is forcedly output from a high-side channel of the high-voltage half-bridge driving chip, and high level is output from a low-side channel; an upper power tube is closed, and a lower power tube is opened, so the low-side power voltage VCC charges a bootstrap capacitor CB through an external diode until the high-side power voltage VBS is greater than the high-side under-voltage threshold VBSU; and the high-side power voltage and the low-side power voltage are greater than the high-side under-voltage threshold and the low-side under-voltage threshold, and the high-voltage half-bridge driving chip normally works. A circuit comprises the high-voltage half-bridge circuit, the upper power tube M1, the lower power tube M2, the diode DB and the bootstrap capacitor CB.

The invention discloses an electromobile charging and exchanging power station stationing and planning system and method. The system and method comprises an electromobile charging and exchanging power station stationing, planning and decision-making management centre, a vehicle-mounted collection terminal and a method for stationing and planning by using the system. The electromobile charging and exchanging power station stationing, planning and decision-making management centre is connected with the vehicle-mounted collection terminal through an electric power private network, the electromobile charging and exchanging power station stationing, planning and decision-making management centre comprises a preposition service device, a data storage device and a layout planning service device, the data storage device comprises a relation data base server and a real-time data base server, and the layout planning service device comprises servers such as a global information system (GIS) server and an area calculation server. The electromobile charging and exchanging power station stationing and planning system and method can effectively prevent newly-built electromobile charging and exchanging power stations from building in the service scope of the existing electromobile charging and exchanging power station, improves feasibility and rationality of an electromobile charging and exchanging power station stationing and planning scheme, improves use ratio, charging ratio and work efficiency of the electromobile charging and exchanging power station.

The invention relates to an intelligent power lithium ion battery management system. The system comprises a microcontroller module, an acquisition module, a storage module, a safety protection module, a communication module, a charging and discharging control module and an equalization management module, wherein the acquisition module, the storage module, the safety protection module, the communication module, the charging and discharging control module and the equalization management module are connected to the microcontroller module. The charging method comprises the following steps that according to a single battery voltage collected by the acquisition module, a total voltage of a battery pack, a temperature, a current and other information, whether the battery allows to be charged is determined; if the battery allows to be charged, the battery management system automatically adjusts a charging mode to the battery pack; through CAN communication, an output current of an equalization power supply module is automatically adjusted; equalization charging is performed on a single battery with a low voltage till that differential voltages of all the single batteries are less than a threshold. By using the system and the method of the invention, according to data information of the battery pack, a charging mode can be automatically selected, a charging current is automatically matched, a charging protection function is possessed, charging efficiency of the battery pack can be increased and a circulation service life of the battery pack is prolonged.

The invention provides a formula and preparation method of a high energy storage lead-acid battery lead paste and relates to the technical field of lead-acid batteries. The formula of a positive plate lead paste comprises the following raw materials: 7-8.5% of dilute sulphuric acid, 10.2-10.8% of deionized water, 0.2-0.4% of colloidal graphite, 0.8-2% of red powder, 0.06-0.09% of stannous sulfate, 0.05-0.08% of polyester staple fiber and the balance of lead powder; the formula of a negative plate lead paste comprises the following raw materials: 6.8-7.5% of dilute sulphuric acid, 9.8-10.8% of deionized water, 0.2-0.4% of acetylene black, 0.2-0.3% of humic acid, 0.8-1.0% of barium sulfate, 0.08-0.1% of barium stearate, 0.15-0.18% of sodium lignosulphonate, 0.06-0.09% of polyester staple fiber and the balance of lead powder. The battery prepared by the lead paste has the advantages of high initial capacity and long cycle life; and the overdischarge resistance and charge acceptance of the battery are higher than the standard requirements.

The invention discloses a wireless charging device capable of allowing multiple devices to be charged to be charged simultaneously on the basis of an electromagnetic induction principle. The wireless charging device comprises a coil detection unit, a control unit, at least two transmitting coil components and at least two two-dimensional movement mechanism sets, and the control unit can control different two-dimensional movement mechanisms to drive the corresponding transmitting coil components to move in different horizontal planes. Meanwhile, the wireless charging device further comprises a lifting mechanism which drives the transmitting coil components to move in the vertical direction, and when the coil detection unit detects receiving coils, placed at different positions of a charge face, in the devices to be charged, the wireless charging device can control the different transmitting coil components to move to the positions below the corresponding receiving coils, and the lifting mechanism is controlled to enable the transmitting coil components to ascend to proper charging positions. The wireless charging device is suitable for public places with multiple crowds, and the aim of greatly saving charging time of people can be achieved through the characteristic of simultaneous charging.