232results about How to "Guaranteed charging efficiency" patented technology

The invention provides a wireless charging method for charging equipment in a wireless manner. The method comprises the following steps: 102. detecting the intensity of a magnetic field generated by a transmitting coil around the equipment in real time; and 104. judging whether to charge the equipment in a wireless manner according to the intensity of the magnetic field. The invention also provides a wireless charging receiving device and a mobile terminal. Through the technical scheme, the invention can charge the equipment when the intensity of the magnetic field reaches a certain value, thus ensuring the charging efficiency, avoiding the electric energy generated by the transmitting coil from being wasted and causing radiation and simultaneously dispensing with power supply control operation of the user on one end of the transmitting coil.

The invention discloses a wireless charging, alignment and metal foreign body detection system of an electric automobile and a method thereof. The detection system comprises a transmitting coil, a receiving coil, a probe, a signal conditioning module and a control module connected with the signal conditioning module, wherein the transmitting coil is connected with the output end of a wireless charging and transmitting device on the ground surface of a parking lot, the receiving coil is connected with the input end of a wireless electric energy receiving device of an electric automobile chassis and is mutually coupled with the transmitting coil, and the probe is laid on the surface of the transmitting coil and is mutually coupled with the transmitting coil and the receiving coil. The probe is of an axis-symmetric structure and is composed of two coils equal in size and turn number and opposite in winding direction. The probe is consistent with the boundary of the transmitting coil in size. The signal conditioning module is used for receiving voltage signals output by two output ends of the probe and conducting amplification, filtration and peak-holding processing on the two signals output by the two output ends. The control module is used for obtaining the difference of the two received voltage signals and comparing the obtained voltage signal difference value with a preset voltage threshold value.

The invention discloses a method and a device for charging a wireless network sensor, and relates to the technical field of wireless communication. The method and the device can be used for solving the problem of large charging energy consumption of WCV on the premise of ensuring the charging efficiency. In an embodiment of the invention, a base station receives position information of each node in a wireless sensor network WSN; the base station divides the WSN into at least two areas according to the position information of each node, wherein the longest distance from the center of each area to the edge of each area is the longest charging distance of a wireless charging vehicle WCV; the base station determines an initial charging path of the WCV according to the position of the center of each area; and the base station controls the WCV to respectively park at the center of each area according to the initial charging path and simultaneously charge all nodes within the current parking area. The scheme provided by the embodiment of the invention is suitable for charging nodes in the WSN.

The invention relates to a battery charging method and a battery charging device. The method includes S1) a step of subjecting a battery to constant-current charging with a maximum constant-current current to allow the voltage of the battery to reach a first preset voltage; S2) a step of charging the battery by a current control manner to allow the voltage of the battery to reach a second preset voltage, with the charging current being controlled to be gradually decreased along with increase of the voltage of the battery; and S3) a step of charging the battery through pulse circulation to allow the voltage of the battery to reach the nominal voltage. The charging current is decreased according to the voltage of the battery after large-current constant-current charging, thus ensuring the charging efficiency of the battery, and avoiding use of too much charging current on water decomposition at the same time. Polarization is reduced through the pulse circulation. Requirements on the maximum power of charging control are low. Hardware design is more economical.

The technical scheme of the invention provides a charging circuit, a terminal and a charging system. The charging circuit is connected with a charger, a terminal load and a battery and is characterized by comprising a first regulation circuit, a current detection circuit, a voltage detection circuit and a control circuit, wherein a first end of the first regulation circuit is connected with the charger, a second end of the first regulation circuit is also connected with the terminal load, a third end of the first regulation circuit is connected with the control circuit, a second of the current detection circuit is connected with a positive electrode of the battery, a negative electrode of the battery is connected with the charger, and the current detection circuit is connected in series between the negative electrode of the battery and the charger. In the charging circuit provided by the invention, a charging circuit can be adjusted when the charging current abruptly changes so as to prevent damage of an excessive large charging current to the charging circuit and the battery.

The invention relates to the field of electric vehicles, and provides a vehicle-mounted charger of an electric vehicle and a vehicle-mounted DC/DC (direct-current/direct-current) integrated system. The vehicle-mounted charger of the electric vehicle and the vehicle-mounted DC/DC integrated system comprise a charging insertion gun, a CC (communication center) confirmation line, a CAN (controller area network) communication line, a battery management system (BMS), an integrated controller, a 12V storage battery, a relay I, a relay II, a high-voltage power storage battery, a casing and a radiating system. The integrated controller mainly comprises a bridge rectifier, a relay I, a switch MOS (metal oxide semiconductor) power tube and a switch power supply transformer, the charging insertion gun, the bridge rectifier, the relay I, the switch MOS power tube and the switch power supply transformer are sequentially connected, one end of the battery management system (BMS) is connected with the charging insertion gun through the CC confirmation line, the other end of the battery management system (BMS) is connected with the relay II and directly feeds a CC confirmation signal to the integrated controller through the CAN communication line, two poles of the high-voltage power storage battery are connected with an output end of the relay I and are also connected with an output end of the switch power supply transformer through a switch K2, and two poles of the 12V storage battery are directly connected with the other output end of the switch power supply transformer.

The invention discloses a new energy vehicle large-power charging cooling system and a monitoring method thereof. The new energy vehicle large-power charging cooling system cools charging contact points through a pipeline connected to a charging gun, the temperature of the contact points, the temperature of cooling liquid in a water tank, and the environment temperature are obtained through different temperature sensors correspondingly, all the temperature sensors are connected with a cooling system controller, a charging controller adjusts the rotating speed of a water pump and a cooling fan according to the comparison result of the temperature of all the points and temperature threshold values of the points; and the detected pressure and flow in the pipeline and a detected liquid level signal of the water tank are transmitted to the cooling system controller, and the operating situation of the cooling liquid is judged according to the comparison result of the threshold values of the points, so that an operation failure is alarmed.

A bracket-type wireless charger, including a box body having a charging circuit and a transmitting plate having a transmitting coil. An adapter plate is arranged between the transmitting plate and the box body. An upper end of the adapter plate is hinged through interference fit to a lower part of a back surface of the transmitting plate. A lower end is hinged through interference fit to a middle part of a top surface of the box body. The box body has a groove for accommodating the adapter plate. The two ends of the adapter plate are hinged through interference fit to the box body and the transmitting plate respectively, and the position and an inclination angle of the transmitting plate relative to the box body can be adjusted through rotation of the adapter plate, so as to adapt to the positions of wireless charging receiving coils of different electronic equipment.

The invention belongs to the technical field of public transport and provides a bidirectional DC/DC charging device and a bidirectional DC/DC charging control method. The bidirectional DC/DC charging device comprises a pantograph, a super-capacitor bank, a power battery pack, a motor controller and a drive motor, wherein the pantograph is electrically connected with the super-capacitor bank and used for charging the super-capacitor bank, and the super-capacitor bank is electrically connected with the drive motor via the motor controller and is used for powering the drive motor. A DC/DC converter for achieving bidirectional energy transmission between the super-capacitor bank and the power battery pack is serially connected between the super-capacitor bank and the power battery pack. The bidirectional DC/DC charging device has the advantages that the super-capacitor bank and the power battery pack supply power in parallel and are more remarkable in auxiliary effect and complementary, so that system cost is reduced, and rapidity, reliability and safety of a charging control process are ensured.

The embodiment of the invention provides a pixel driving circuit, a driving method thereof, an array substrate and a display device. The pixel driving circuit comprises a driving module, a storage module, a light-emitting module and a first electric leakage suppression module, and the first electric leakage suppression module is electrically connected with a first node, a second node, a grid signal end and a second power supply end. The processor is configured to switch on the first node and the second node in response to a working level input by the gate signal end in a data writing stage so as to write the data voltage into the first node and store the data voltage, and switch off the electric connection between the first node and the second node in response to a non-working level input by the gate signal end in a light emitting stage; and the leakage current between the first node and the second node is reduced through the stored data voltage. Therefore, the potential of the first node can be better maintained, namely, the driving current can be more stable, so that the flicker phenomenon is improved, and the display effect is improved.

The invention discloses a novel electric automobile charging circuit and a control method thereof. The circuit comprises a control unit and a main circuit, wherein the main circuit comprises a high frequency circuit and a power frequency circuit; the power frequency circuit comprises a charging input end, a half-bridge PWM rectifier and an energy storage capacitor which are connected in sequence;the input end of the half-bridge PWM rectifier is connected to a resonance circuit, a high frequency isolation transformer, a high voltage rectifier filter circuit, a low voltage rectifier filter circuit, a low voltage output end and a charging output end to form the high frequency circuit; and the control unit is used for controlling the operation of the half-bridge PWM rectifier and the operation of the rectifier filter circuit according to obtained voltage and current information. Power factor correction and the soft-switching technology of a high voltage rectifier bridge are realized, thequantity of switching devices required for a battery charger can be reduced effectively, the volume of the transformer is reduced, the quantity of transformers can be reduced due to the application ofa three-winding transformer, the efficiency of power transmission is improved, and the volume and cost of the system are reduced.

The invention relates to an electric vehicle V2G control system based on a particle swarm optimization algorithm. The electric vehicle V2G control system comprises an electricity price setting module, a battery temperature loss calculation module, a battery life loss calculation module, a charging process loss calculation module and a control strategy calculation module; the electricity price setting module is connected with the battery temperature loss calculation module, the charging process loss calculation module and the control strategy calculation module, and the battery temperature loss calculation module, the battery life loss calculation module and the charging process loss calculation module are all connected with the control strategy calculation module. The particle swarm optimization algorithm is used for comprehensively considering the electric vehicle charging and discharging power and the optimal electric vehicle V2G control strategy obtained under constraint conditions such as allowed corresponding charging and discharging time periods, the maximized economic benefits in the whole battery life cycle is achieved, meanwhile, the safety of a battery in the charging process can be better ensured, and a user can obtain the best experience in the whole battery life cycle of the electric vehicle.

The embodiment of the invention provides electronic equipment, wireless charging equipment and a wireless charging method, and belongs to the technical field of charging. The electronic equipment comprises a receiving coil, a receiving circuit, a first switch module and a first control module. The first control module is used for controlling on-off of at least two first switches in the first switch module according to the parameters relevant to the magnetic coupling strength between the receiving coil and an emitting coil of the wireless charging equipment, so that the number of turns of sub coils of effective working in the receiving coil is adjusted. According to the electronic equipment, the wireless charging equipment and the wireless charging method, the number of the turns of the subcoils of effective working in the receiving coil is adjusted according to the magnetic coupling strength between the emitting coil and the receiving coil, and therefore temperature rising of equipment in the charging process is lowered by adjusting the effective impedance of the coils.

The invention provides a management system applied to a lithium ion battery and a lithium ion battery pack. The management system comprises the single lithium ion battery or the lithium ion battery pack and an external power supply. A two-wire system is adopted by an external interface of the system, namely an external power supply charging interface of the system is a system discharge interface, and the lithium ion battery or the lithium ion battery pack is charged on the condition that an external power supply of the system is lower than rated voltage. When the external power supply is insufficient to enable the lithium ion battery or the lithium ion battery pack to be fully charged and on the condition that a charge-discharge interface is of the two-wire system, the lithium ion battery or the lithium ion battery pack can be fully charged through the management system. Meanwhile, the hardware switching is adopted in conversion of charging to discharging, the conversion time is at a subtle level, and seamless standby power of a standby power system can be achieved. In addition, the conversion of discharging to charging is achieved by logic control of a controller, and accordingly the charging efficiency is guaranteed.

The invention discloses a signal control device and a control method, a display control device and a display device and relates to the display technology field. The invention aims at increasing the charging rate of a thin film transistor contained in the area of an array substrate and guaranteeing the display effect of a display panel, wherein the area is far away from a signal terminal. The signal control device comprises a signal generating unit and a pulse modulation unit, wherein the signal generating unit is used for generating an initial enabled control signal; the pulse modulation unitis connected to the signal generating unit and is used for modulating the pulse displacement of the initial enabled control signal so as to acquire a modulated enabled control signal, and in each scanning period, the pulse displacement of the modulated enabled control signal is gradually increased; and the modulated enabled control signal is used for controlling the output timing sequence of display control signals. The display control device comprises the signal control device mentioned in the above technical scheme. The signal control device and the control method, the display control deviceand the display device are used in the display device.

The invention provides a charging method. At least two power supply units in a charger are controlled to supply electricity to at least two charging units in electronic equipment, so that the at least two charging units in the electronic equipment respectively charge batteries in the electronic equipment. By the method, the charger can provide at least two power supply current to the electronic equipment. Correspondingly, the electronic equipment also comprises a plurality of charging units; the plurality of charging units can respectively charge the batteries on the basis of at least two power supply current; each charging unit only needs to obtain relatively low power; various charging units can realize charging of the batteries with relatively high power as a whole; in the rapid charging process, various charging units only need to provide relatively low power under the premise of ensuring the charging efficiency; and relatively low heat is generated, so that a charging module does not generate a violent temperature rise.

The invention discloses a cascaded wireless charging system of an electric power inspection robot and a control method. The system is characterized in that a primary side is provided with multiple stages of transmitting coils, each stage of transmitting coil is connected with a respective compensation capacitor to form a first-stage resonance circuit; every two adjacent stages of transmitting coils are coupled through a U-shaped magnetic core, a sensor used for detecting whether a load enters and a power switch used for controlling the on-off of the resonance circuit are arranged relative to each stage of resonance circuit, a first-stage transmitting coil takes electricity from a high-frequency inverter on the primary side, the other transmitting coils take electricity from a last-stage transmitting coil through the U-shaped magnetic core, and when the load enters an nth-stage wireless charging transmitting guide rail, the system controls the power switches corresponding to the first-stage transmitting coil to an nth transmitting coil be in a closed state. The invention has the effect that the dynamic wireless charging of the electric power inspection robot can be met.

The invention provides a wireless charging base and a control method of the wireless charging base. The wireless charging base comprises a base body, a motion mechanism, a charging module, and an image acquisition module, wherein the base body is configured to carry the device to be charged, the motion mechanism is located in the base body, the charging module is moveably set in the motion mechanism, the image acquisition module is configured to acquire position image information of the device to be charged on the base body, and the motion mechanism makes the charging module move to the bottomof the device to be charged according to the position image information. The charging module of the wireless charging base can be aligned with the charging coil of the device to be charged to ensurethe charging efficiency of the wireless charging base to the charging device.

The invention relates to the field of battery charging management, in particular to a charging system which mainly comprises a power management chip, a detection module and an optimizing analysis module, wherein the power management chip is provided with a boosting module, the detection module is used for detecting operation data of a mobile terminal device in charging, the operation data are received by the optimizing analysis module, the strength of current outputted by the power management chip is controlled according to the operation data, and charging of the mobile terminal device is adjusted. By the aid of the technical scheme, the output current of the power management chip can be dynamically adjusted according to the different operation data of the mobile terminal device, charging efficiency is guaranteed without affecting operation of the mobile terminal device, the boosting function of the power management chip is closed when the mobile terminal device is low in power consumption, and the charging system has the functions of protecting a battery and prolonging the service life of the battery.

The invention discloses a mobile terminal and a charging current regulation method thereof. The charging current regulation method of the mobile terminal comprises the following steps of receiving a current regulation signal, and converting the current regulation signal into a gear value of corresponding charging current; emitting a control signal according to the gear value; outputting a charging current according to the control signal. The mobile terminal comprises a receiving module which is used for receiving the current regulation signal, a conversion module which is used for converting the current regulation signal into the gear value of the corresponding charging current, a control module which is used for emitting the control signal according to the gear value and a charging module which is used for outputting the charging current according to the control signal. According to the mobile terminal and the charging current regulation method thereof, disclosed by the invention, a function of regulating the magnitude of the charging current just like regulating the backlight brightness of a mobile phone is realized; meanwhile, due to the setting of different gear values of the charging current, the heating value of the mobile terminal is reduced while the charging efficiency is ensured, the reliability of cells and components is increased, the service life of the cells and the components is prolonged, and the user experience is improved.

The invention provides a wireless charging base and a wireless charging base control method. The wireless charging base comprises a base body, wherein a charging plane is used for containing a deviceto be charged is arranged in the base body. A charging module is arranged in the base body. A movement mechanism is arranged in the base body. The charging module is movably arranged on the movement mechanism, and the movement mechanism drives the charging module to move. The movement mechanism moves under the charging plane to enable the charging module to traverse the whole charging plane underthe charging plane, so that the position coordinates of the to-be-charged device is obtained according to the coupling degree of the charging module and each position of the to-be-charged device on the charging plane, the target position coordinate of the charging module is determined according to the position coordinate of the to-be-charged device; and the movement mechanism enables the chargingmodule to move to the target position coordinate. The charging module of the wireless charging base can be mutually aligned with a receiving coil of the device to be charged, so that the charging efficiency of the device to be charged by the wireless charging base is ensured.