64results about How to "Maximize charging efficiency" patented technology

A wireless power charging system has a wireless power transmission apparatus formed to charge a plurality of wireless power receiving apparatuses located in a short distance therefrom, wherein the total charging time for the wireless power receiving apparatuses is saved. The wireless power transmission apparatus has a main control unit and a resonant converter unit, which transmit the electric signal to the wireless power receiving apparatus via the resonance signal generated from a primary charge core in order to charge the wireless power receiving apparatuses. The wireless power transmission apparatus also includes an output signal conversion module for transmitting a converted electric signal to the resonant converter unit and a received signal process module for processing a signal transmitted from the wireless power receiving apparatus.

A charger integrated circuit is provided which includes a DC-DC converter configured to receive an input voltage and generate an output voltage through a switching operation for charging a battery, and a charging controller configured to control the switching operation such that the output voltage is supplied to the battery through charging paths chargeable according to a level of the input voltage.

The invention provides a method and device for wireless charging and capable of achieving automatic position adjustment. Handshake protocol is established between a wireless charging terminal and a mobile terminal for information communication, the wireless charging terminal is equipped with a transmitting coil, and the mobile terminal is equipped with a receiving coil. The method comprises the steps that the current real-time charging efficiency of the mobile terminal is obtained; whether the current real-time charging efficiency is less than the standard charging efficiency corresponding toa current wireless charging standard or not is determined; if so, the relative offset position relation between the receiving coil and the transmitting coil is obtained, and the relative offset position relation includes relative offset direction and relative offset distance; and the receiving coil is adjusted to a specified position according to the relative offset direction and relative offset distance. According to the method and device for wireless charging and capable of achieving automatic position adjustment, the wireless charging terminal can be automatically controlled to adjust the position of the mobile terminal according to the real-time charging efficiency, so that the alignment between the sending coil and the receiving coil is accurate, and the charging efficiency is maximized.

The invention discloses a wireless electric energy transmission system and method capable of identifying mutual inductance and load from a primary side, relates ot the field of wireless electric energy transmission, and is used for solving the problem that a wireless electric energy transmission system in the prior art is provided with complex redundant equipment at two ends of the primary side and the secondary side, resulting in the problems of high cost, complex circuit, and poor reliability. The wireless electric energy transmission system comprises a DC power supply, a high frequency inverter circuit, a primary side compensation circuit, a transceiver coil, a secondary compensation circuit, a high frequency rectifier circuit, a filter circuit and a load, the secondary side is composedof a coupling structure based on a series compensation equivalent circuit, the primary side coupling compensation structure is not limited, the secondary side coupling compensation structure includesan inductor LS and a capacitor CS connected in series in sequence, in the secondary side compensation circuit, a capacitor CS1 branch circuit with a bidirectional switch is connected in parallel between two ends of the capacitor CS. The wireless electric energy transmission system provided by the invention identifies the dynamic change of mutual inductance or load impedance of the pickup end by detecting the voltage and current signals of the transmitting end in real time, does not need an additional device, and can effectively reduce system complexity and cost.

A method includes detecting that a wireless charging-capable vehicle is in a charging position proximate a primary coil of a wireless charging system that is operable to wirelessly charge the vehicle via a secondary coil installed in the vehicle. The primary coil includes a top coil and a bottom coil that are substantially parallel to one another, the top coil and the bottom coil coupled to one another via a plurality of cross-coil junction units each including a switching element that routes electric current through at least a portion of one or more of the top coil and the bottom coil. The method further includes setting the switching elements such that current flowing through the primary coil produces an optimal angle of magnetic flux for wirelessly charging the vehicle given a position of the primary coil with respect to a position of the secondary coil, and causing electric current to flow through the primary coil according to the set switching elements to wirelessly charge the vehicle.

An electromagnetic field controlling system and method are provided. The electromagnetic field controlling system includes a magnetic field sensor that is disposed proximate to or in a vehicle that charges electric power using a wireless charging system and is configured to detect the magnitude of an electromagnetic field. An output controller adjusts output power in a power transmission side of the wireless charging system based on a comparison between a predetermined value for an electromagnetic field and the magnitude of the electromagnetic field detected by the magnetic field sensor. Accordingly, the magnitude of an electromagnetic field output from a vehicle wireless charging system is controlled within a safe range.

The invention relates to the technical field of charging management, and discloses a charging and energy supply optimization method and device for a charging management system. The method comprises the steps that charging station electric energy supply transformation and distribution information, charging facility capability information, charging terminal output information, and electric vehicle charging demand information are acquired; the charging capacity, the power supply capacity and the actual charging capacity of a charging station charging facility system are determined, a model output result is obtained according to a pre-trained deep learning time sequence prediction algorithm model, the actual charging capacity of the charging station charging facility system and the charging demand quantity of a to-be-charged electric vehicle are combined, and a charging power distribution instruction is generated, and electric energy distribution is carried out on each charging facility. According to the charging and energy supply optimization method and device for the charging management system provided by the invention, a continuously optimized management control model is established by using deep learning, the energy supply and charging capability resources of charging facilities are optimized, and the utilization efficiency is improved.

The invention relates to a storage battery quick charging safety control method, device and equipment and a storage medium. The method comprises the following steps: modeling an equivalent circuit and a thermal equivalent circuit of the storage battery to obtain a dynamic decoupling matrix; battery safety state data are obtained through parallel calculation; performing abnormal mode recognition to obtain an abnormal mode recognition result; inputting an abnormal mode recognition result into a heterogeneous graph gate loop unit, and extracting spatial-temporal features through heterogeneous graph convolution and a GRU structure to obtain deep fault features; calculating the charging safety capacity, and carrying out multiple constraint control on the thermal management and the charge state of the battery to obtain a charging power distribution scheme; the charging power distribution scheme is input into the two-stage model prediction controller for distributed power redistribution, a charging control instruction is obtained, the battery state can be monitored in real time, the abnormal mode can be accurately recognized, self-adaptive control is carried out based on multiple constraints, and the safe and efficient fast charging process is achieved.

A wireless charging circuit of an electric vehicle comprises a transmitting circuit, a receiving circuit and a control circuit, wherein an output end of the control circuit is respectively connected with a control end of a transmitting circuit and a control end of the receiving circuit, and an input end of the control circuit is respectively connected with a sampling output end of the transmittingcircuit and a sampling output end of the receiving circuit. The transmitting circuit comprises a first rectifier circuit, an inverter circuit and a harmonic oscillator circuit. The receiving circuitincludes a coil L2, an electronic capacitor circuit, a second rectifier circuit, and a battery. The invention adopts electronic capacitance, adjustable capacitance size, and realizes maximum chargingefficiency. The PCB coil is used to reduce the coil quality. the battery charge is accurately estimated so as to select the charging mode and prolong the service life of the rechargeable battery; UWBprecise positioning technology is used to improve the efficiency of wireless power transmission. the temperature of a battery and a coil is monitored to improve the safety of battery charging.

The invention discloses a charging method and a charging system. The charging method comprises the steps of enabling a processor to control a charger to reduce an output voltage based on a preset rule, and charging a mobile terminal by the reduced output voltage; obtaining an output voltage and an output current output by the charger, and a charging voltage and a charging current output by a charging chip when the mobile terminal is charged by different output voltages separately; obtaining charging efficiency values under different output voltages according to the output voltage, the output current, the charging voltage and the charging current; and enabling the processor to control the charger to charge the mobile terminal by the output voltage corresponding to the maximum charging efficiency value. By adoption of the mode, the output voltage of the charger can be dynamically regulated, so that the direct current loss and the switching loss can be reduced to the minimum when the mobile terminal is charged by the charger, and the maximum of the charging efficiency is further achieved.

A method includes detecting that a wireless charging-capable vehicle is in a charging position proximate a primary coil of a wireless charging system that is operable to wirelessly charge the vehicle via a secondary coil installed in the vehicle. The primary coil includes a top coil and a bottom coil that are substantially parallel to one another, the top coil and the bottom coil coupled to one another via a plurality of cross-coil junction units each including a switching element that routes electric current through at least a portion of one or more of the top coil and the bottom coil. The method further includes setting the switching elements such that current flowing through the primary coil produces an optimal angle of magnetic flux for wirelessly charging the vehicle given a position of the primary coil with respect to a position of the secondary coil, and causing electric current to flow through the primary coil according to the set switching elements to wirelessly charge the vehicle.

A charger integrated circuit is provided which includes a DC-DC converter configured to receive an input voltage and generate an output voltage through a switching operation for charging a battery, and a charging controller configured to control the switching operation such that the output voltage is supplied to the battery through charging paths chargeable according to a level of the input voltage.

The invention provides a bidirectional DCDC converter and an optical storage system. When a low-voltage input / output interface is connected with energy storage equipment, the energy storage equipment can obtain high voltage from a high-voltage input / output interface through a second switching tube and a second capacitor or obtain lower high voltage from a lower high-voltage input / output interface through a third switching tube and a third capacitor, then, the energy storage equipment is charged after the voltage is reduced through a first switching tube, a first capacitor and a first inductor, at the moment, the system can enable the energy storage equipment to obtain electric energy through the lower high-voltage input / output interface with lower voltage reduction to achieve charging and reduce loss of the electric energy in the charging process. Similarly, the energy storage equipment can discharge through a high-voltage input / output interface with higher boosting to reduce loss of the electric energy in the discharging process. In addition, compared with traditional two sets of charging and discharging DCDC converters, the bidirectional DCDC converter has the advantages that the circuit cost is low, and high utilization rate of the electric energy of an overall distributed power supply system can be achieved.

A position alignment method performed by a ground assembly for wireless power transfer includes measuring, through at least one low frequency (“LF”) receiver of the ground assembly, a first magnetic flux density for a magnetic field emitted from at least one LF transmitter of a vehicle assembly; measuring, through the at least one LF receiver, a second magnetic flux density for a magnetic field emitted from the at least one LF transmitter; configuring a received signal measurement based on a comparison result of the first magnetic flux density and the second magnetic flux density; and providing the configured received signal measurement to a vehicle.

Disclosed herein is a method of manufacturing a camshaft. Particularly, the present invention relates to a method of manufacturing a camshaft which includes a single sintering operation and a brazing operation, thus reducing the time for manufacturing.

The invention discloses a solar charger, belongs to the technical field of chargers, and aims to solve the problem that an existing solar charger is low in solar energy conversion efficiency. The solar charger comprises a charger body, a solar cell arranged on the charger body, a connecting strip arranged on the charger body, a support rod arranged on the charger body and a mounting table arranged on the charger body, wherein the charger body is made of hard materials. The solar charger has the advantages that the optimal use effect of the solar cell of the solar charger can be brought into play, and the solar cell of the solar charger can maximize charging efficiency at any time.

A wireless power charging system has a wireless power transmission apparatus formed to charge a plurality of wireless power receiving apparatuses located in a short distance therefrom, wherein the total charging time for the wireless power receiving apparatuses is saved. The wireless power transmission apparatus has a main control unit and a resonant converter unit, which transmit the electric signal to the wireless power receiving apparatus via the resonance signal generated from a primary charge core in order to charge the wireless power receiving apparatuses. The wireless power transmission apparatus also includes an output signal conversion module for transmitting a converted electric signal to the resonant converter unit and a received signal process module for processing a signal transmitted from the wireless power receiving apparatus.

A wireless power charging apparatus and method are provided, which recognizes location information of at least one wireless power receiving apparatus; selects at least one of at least one wireless power transmitter that supplies power to the at least one wireless power receiving apparatus based on the location information; and supplies power to the at least one wireless power receiving apparatus through the at least one selected wireless power transmitter.

Disclosed herein is a method of manufacturing a camshaft. Particularly, the present invention relates to a method of manufacturing a camshaft which includes a single sintering operation and a brazing operation, thus reducing the time for manufacturing.

The invention relates to a wireless charging method and device, electronic equipment, a system and a readable storage medium. The method comprises the following steps: acquiring an initial distance between a receiving coil in the mobile equipment and a transmitting coil of a charging pile; according to the initial distance and a preset distance range, detecting whether position deviation exists between the receiving coil and the transmitting coil, wherein the preset distance range is related to the heights of different preset areas on the transmitting coil; and if the position offset exists between the receiving coil and the transmitting coil, controlling the movable equipment to move to a position where the receiving coil is aligned with the transmitting coil, and controlling the receiving coil to enter a wireless charging state. By adopting the method, the charging efficiency of the mobile equipment can be improved.

A method and an apparatus for charging a battery using a solar cell are provided. The method includes detecting an output state of the solar cell, searching a mapped charging current amount corresponding to the detected output state of the solar cell, setting a charging current amount of a charging unit for charging the battery based on the found charging current amount, and charging the battery with the set charging current amount. The method may maximize charging efficiency of a battery using the solar cell. Furthermore, the method may prevent output power consumption of a solar cell. Accordingly, the method may improve charging efficiency in comparison with a portable terminal of the related art in the same condition to shorten a charging time.

The embodiment of the invention discloses a charging control method, device and equipment and a storage medium which are used for solving the problem of low charging efficiency of an existing vehiclecharging manner in order to solve the battery safety problem. The method comprises the steps that deviation information, collected at a first moment, of a first charging current of an electric vehiclerelative to an actual demand current of the electric vehicle is determined; a third charging current input to the electric vehicle by the electric vehicle at the second moment is determined accordingto the deviation information and a second charging current requested to the charging equipment at the first moment; and when the second moment arrives, a third charging current is input to the electric vehicle. According to the technical scheme, the situation that the service life of the charging device is affected due to the overlarge charging current of the electric vehicle can be avoided, andmeanwhile the charging efficiency can be maximized.

The invention relates to the technical field of charging management, and discloses a charging management system and method based on deep learning, and the system comprises a charging capability execution management unit and a charging capability training optimization unit; the charging capability execution management unit is connected with the charging capability training optimization unit. The charging capability training optimization unit generates a charging power distribution instruction according to a pre-trained deep learning time sequence prediction algorithm model in combination with the actual charging capacity of the charging facility system of the charging station and the charging demand quantity of the to-be-charged electric vehicle; and the charging capability execution management unit controls the electric energy to be distributed to each charging facility according to the charging power distribution instruction, so that the charging facilities charge the to-be-charged electric vehicle through the charging terminal. According to the charging management system and method based on deep learning provided by the invention, the continuously optimized management control model is established by using deep learning, so that the charging facility management system has energy supply for dynamically distributing charging power, and the utilization efficiency of the charging facility is improved.

The invention provides an intelligent charging method and system for a charging and swapping cabinet, and the method comprises the steps: extracting the opening frequency of the charging and swapping cabinet and the swapping frequency of each battery pack from the historical swapping record of the charging and swapping cabinet, and determining the electricity load of the charging and swapping cabinet through the opening frequency and the charging performance in each battery state. Determining the charging priority of each battery pack according to the electricity load and the battery replacement frequency of each battery pack; extracting load characteristics of the charging and swapping cabinet from all the battery states based on a mapping relation among the battery packs in the charging and swapping cabinet, and determining a load balance degree of charging power distribution in the charging and swapping cabinet according to the load characteristics and the multi-path charging power; and according to the load balance degree and the charging priority of each battery pack, dynamically adjusting the charging power of each battery pack in the charging and swapping cabinet in the subsequent charging process. Based on the scheme, the power distribution efficiency in the charging process can be improved.

The invention discloses a charging method and a charging system. The charging method comprises the steps that a mobile terminal detects charging current and battery voltage, and sends a corresponding control signal to a charger according to the detected charge current and battery voltage, and the charger controls output voltage according to the corresponding control signal, so that the charge current can be adjusted. The optimal charge current can be matched according to the current battery voltage, so that the charging efficiency is maximized, and the quick and efficient charging is achieved. The charger directly controls the output voltage to adjust the magnitude of the charging current, so that charging heat due to the loss of electric energy is not caused, the charging safety is improved, and the energy waste is reduced.

The invention provides a self-protection UPS power supply, and relates to the technical field of UPS power supplies, the self-protection UPS power supply comprises a main control module, a battery module, an inverter module, a power supply input interface and an output interface, the main control module is electrically connected with the battery module, the inverter module, the power supply input interface and the output interface, through the built-in artificial intelligence driving electric energy management system, the UPS power supply can learn the power utilization habit of a user and predict the future load demand, the discharging strategy and the charging scheme are dynamically adjusted, and the battery utilization rate and the charging efficiency are maximized. Besides, when an integrated MPPT (maximum power point tracking) controller is connected to a solar panel, the energy conversion efficiency of solar energy can be accurately tracked and optimized, renewable energy sources are fully utilized, the energy self-sufficient capacity and the endurance time are remarkably improved, and the system is particularly suitable for outdoor environments or environments with unstable electric power conditions.

The invention provides a bidirectional DCDC converter and an optical storage system. When a low-voltage input / output interface is connected with energy storage equipment, the energy storage equipment can obtain high voltage from a high-voltage input / output interface through a second switching tube and a second capacitor or obtain lower high voltage from a lower high-voltage input / output interface through a third switching tube and a third capacitor, then, the energy storage equipment is charged after the voltage is reduced through a first switching tube, a first capacitor and a first inductor, at the moment, the system can enable the energy storage equipment to obtain electric energy through the lower high-voltage input / output interface with lower voltage reduction to achieve charging and reduce loss of the electric energy in the charging process. Similarly, the energy storage equipment can discharge through a high-voltage input / output interface with higher boosting to reduce loss of the electric energy in the discharging process. In addition, compared with traditional two sets of charging and discharging DCDC converters, the bidirectional DCDC converter has the advantages that the circuit cost is low, and high utilization rate of the electric energy of an overall distributed power supply system can be achieved.

The invention discloses an electric vehicle wireless charging device with a battery energy balancing function and a control method thereof. The electric vehicle wireless charging device comprises a power supply side circuit, a receiving circuit and a balancing circuit. The power supply side circuit comprises a first rectifying circuit, an LC filter circuit and an inverter circuit, the power frequency power supply AC is connected with the first rectifying circuit, the first rectifying circuit is connected with the LC filter circuit, the LC filter circuit is connected with the inverter circuit, and the inverter circuit is connected with the transmitting coil L1. The receiving circuit comprises a second rectifying circuit, a variable capacitor and a series battery pack, the receiving coil L2 is connected with the second rectifying circuit, the second rectifying circuit is connected with the variable capacitor, and the variable capacitor is connected with the series battery pack. The equalization circuit comprises an equalization unit and a switch array, the equalization unit is connected with the switch array, and the switch array is connected with the series battery pack. According to the wireless charging device and the control method, energy balance can be carried out on the battery pack while charging is carried out, so that energy loss caused by the process of charging first and then balancing is reduced, and the wireless charging device and the control method have the advantages of being convenient to use, safe, reliable, rapid and convenient.

The invention relates to the technical field of charging piles, in particular to a community charging pile scheduling optimization method and system, and the method comprises the steps: obtaining charging pile information, a microgrid daily load prediction curve, charging pile historical charging information, user charging demand information and charging pile electricity price information; constructing a target function group based on the daily load prediction curve of the micro-grid and historical charging information of the charging pile; constructing a constraint condition group based on the obtained charging pile information; constructing a charging scheme based on the constructed constraint condition group, the target function group and the obtained user charging demand information and charging pile electricity price information; and scheduling the charging piles in the community based on the constructed charging scheme. According to the technical scheme, orderly charging of the new energy vehicles in the whole community and maximization of the charging efficiency are achieved.