Abstract: A coil module, power transmitting circuit and power receiving circuit are disclosed. The coil module including at least two parallel branches, wherein each parallel branch includes a coil and a first capacitor which are connected in series; the capacitances of the first capacitors are set to reduce or eliminate an equivalent impedance difference between the parallel branches. Therefore, the loss is reduced and the wireless charging efficiency is improved while ensuring the charging rate and the charging degree of freedom.

Abstract: A wireless power transmitting terminal and control method are disclosed. The wireless power transmitting terminal including an inverter circuit, a resonance circuit and a controller, wherein in a frequency detection state, an alternating current of the inverter circuit is controlled to switch between different candidate frequencies, so as to determine a resonance frequency and a maximum peak value of an electrical parameter of the alternating current at the resonance frequency, and determine an operating state of the power transmitting terminal according to the change of the maximum peak value. Therefore, the wireless power transmitting terminal can dynamically adjust in real time a preset operating state thereof, thereby improving the device adaptability, and avoiding the damage of the device to be charged.

Abstract: The present disclosure discloses a wireless charging additional apparatus and wireless power transmitting and receiving apparatuses, the wireless charging additional apparatus includes a first planar coil, a second planar coil, and a connecting part, the first planar coil and the second planar coil respectively include a plurality of coil turns, and the connecting part connects leading-out ends of the first planar coil and the second planar coil, where the first planar coil, the second planar coil and the connecting part are connected in series, the first planar coil is provided inside the second planar coil, and current directions in the first planar coil and the second planar coil are opposite. Thus, according to the present disclosure, by providing a certain winding mode of a coil, efficiency of wireless charging can be improved, and loss is reduced.

Abstract: A coil module and a wireless power transmitting circuit using the same are disclosed. At least three sets of coils are configured to be connected in series and overlapped each other, which may, in one hand, increase the coupling coefficient between the power transmitting coil and the power receiving coil, and in the other hand, make the alternating magnetic field generated by the coil module more concentrated so as to reduce negative influences caused by the strayed magnetic field around the coil module.

Abstract: Disclosed in embodiments of the present disclosure are a wireless charging control method and a wireless charging system. An electricity transmitter is controlled to charge a chargeable device in the discontinuous mode in response to the temperature information matches the first preset condition. In the discontinuous mode, electricity transmitter is controlled to charge the chargeable device during first charging time period of each charging cycle, and to stop charging the chargeable device during second charging time period of each charging cycle to let an energy storage element in the chargeable device discharge to a battery. Thus, it is possible to reduce the power consumption caused by magnetic induction in the wireless charging process, to lower the temperature of the electricity transmitter and the chargeable device, and to reduce the wake-up times of the chargeable device during the charging process.

Abstract: Disclosed in embodiments of the present disclosure is a wireless charging device, by setting a excitation source configured to input current of different frequencies to a transmitting circuit, implementing charge for electronic devices at different working frequencies wirelessly only through a set of transmitting circuit, there is no need of multiple sets of switchable transmitting circuit, so as to simplify the circuit structure and device structure, and reduce the manufacturing cost and improve the using convenience.

Abstract: Disclosed in embodiments of the present disclosure are a wireless power transmitting apparatus and a wireless charging system. The wireless power transmitting apparatus comprises a wireless power transmitting coil, first magnet units and a second magnet unit. The first magnet units arranged at intervals around the wireless power transmitting coil, and the second magnet unit arranged in the center of the wireless power transmitting coil. The wireless charging system comprises the wireless power transmitting apparatus and a wireless power receiving apparatus, which comprises a wireless power receiving coil and magnet units arranged around or at the center of the wireless power receiving coil. Therefore, the technical scheme of the embodiments of the present disclosure can magnetically attract a variety of wireless power equipment for wireless charging, and can provide good adaptability and strong usability.

Abstract: Disclosed in an embodiment of the present disclosure is a wireless power transmission apparatus, including a coil, accommodation bodies, and magnet units, wherein the accommodation bodies are arranged at intervals around the coil; and the magnet unit is disposed in the accommodation body in a movable manner. Owing to a constrained activity of the magnet unit, the wireless power transmission apparatus in the technical solution of the embodiment of the present disclosure can adapt to a plurality of wireless power receiving or transmitting apparatuses, thereby having good practicability, and improving the use experience of a user and the charging efficiency.

Abstract: An apparatus for charging area detection is disclosed, and relates to the technical field of wireless charging. The apparatus for charging area detection includes a plurality of first induction coils fixedly disposed in a preset manner and a positioning auxiliary circuit connected to the plurality of first induction coils, wherein the positioning auxiliary circuit indicates a relative position of a center of a magnetic field according to induced voltages induced by the first induction coils. Therefore, the center of an alternating magnetic field can be determined more conveniently and quickly, thereby facilitating the improvement of the wireless charging efficiency and the use experience of a user.

Abstract: A wireless power transmitting terminal and control method are disclosed. The wireless power transmitting terminal including an inverter circuit, a resonance circuit and a controller, wherein in a frequency detection state, an alternating current of the inverter circuit is controlled to switch between different candidate frequencies, so as to determine a resonance frequency and a maximum peak value of an electrical parameter of the alternating current at the resonance frequency, and determine an operating state of the power transmitting terminal according to the change of the maximum peak value. Therefore, the wireless power transmitting terminal can dynamically adjust in real time a preset operating state thereof, thereby improving the device adaptability, and avoiding the damage of the device to be charged.

Abstract: A coil module, power transmitting circuit and power receiving circuit are disclosed. The coil module including at least two parallel branches, wherein each parallel branch includes a coil and a first capacitor which are connected in series; the capacitances of the first capacitors are set to reduce or eliminate an equivalent impedance difference between the parallel branches. Therefore, the loss is reduced and the wireless charging efficiency is improved while ensuring the charging rate and the charging degree of freedom.

Abstract: A wireless charging apparatus is disclosed. The wireless charging apparatus comprises a transmitting coil assembly, a heat conduction stand, and a heat conduction housing; wherein the transmitting coil assembly comprises a magnetic sheet and a transmitting coil, wherein the transmitting coil is put on the magnetic sheet. The heat generated by the transmitting coil assembly during charging can be transferred to the heat conduction stand and then further to the heat conduction housing to dissipate heat, so as to reduce the temperature of the wireless charging apparatus.

Abstract: A wireless power supply assembly and an electronic device are disclosed. By providing a coil bearing member between the magnetic sheet and the coil, which is formed as a sealed box-like structure and is provided with a hollow portion, an intensity of a magnetic field passing through the magnetic sheet is attenuated. At the meanwhile, it is also possible to further avoid significant changes in coil inductance parameters caused by horizontal offset between the coil and the magnetic sheet due to installation errors, reduce the sensitivity of the resonance compensation capacitance of the wireless power supply assembly to the position and further reduce the loss. The present disclosure can effectively reduce the loss of the wireless power supply system and improve wireless power transmission efficiency.

Abstract: Provided are an electromagnetic shield device, a wireless charging transmitting terminal, a wireless charging receiving terminal and a system. By providing an electromagnetic shielding device between a power transmitting coil and a power receiving coil and making a magnetic sheet comprised in the electromagnetic shielding device not cover the power receiving coil, the magnetic field acting on the metal material is reduced on one hand and the coupling coefficient between the power transmitting coil and the power receiving coil is increased on the other hand, which reduces the intensity of the emitted magnetic field without changing the required voltage. This reduces an amount of heat and loss during wireless charging and improves charging efficiency.

Abstract: A wireless charging management system and a wireless power transmitting terminal are disclosed. By managing a plurality of wireless power transmitting terminals distributed at different geographic positions through a server, the user can obtain position information and state information of the wireless power transmitting terminal through the client terminal, and at the meanwhile, the wireless power transmitting terminal can operate in response to the control of the server, which enables the user to use the wireless charging device in a shared manner conveniently.

Abstract: A wireless power supply assembly and an electronic device are disclosed. By providing a gap between the magnetic sheet and the coil, dense magnetic lines of force closely abutting the coil pass through the gap to avoid passing through the magnetic sheet, thereby reducing loss due to the magnetic sheet. At the meanwhile, it is also possible to further avoid significant changes in coil inductance parameters caused by horizontal offset between the coil and the magnetic sheet due to installation errors, reduce the sensitivity of the resonance compensation capacitance of the wireless power supply assembly to the position and further reduce the loss. The present disclosure can effectively reduce the loss of the wireless power supply system and improve wireless power transmission efficiency.

Abstract: A coil module and a wireless power transmitting circuit using the same are disclosed. At least three sets of coils are configured to be connected in series and overlapped each other, which may, in one hand, increase the coupling coefficient between the power transmitting coil and the power receiving coil, and in the other hand, make the alternating magnetic field generated by the coil module more concentrated so as to reduce negative influences caused by the strayed magnetic field around the coil module.

Abstract: A wireless power receiving terminal and a wireless charging system are disclosed. A switch is arranged between any one of the input ports and any one of the output ports of a full-bridge rectifying circuit for switching the operation mode of the rectifying circuit. The full-bridge rectifying circuit operates normally when the switch is turned off. A portion of rectifying components in the full-bridge rectifying circuit operate in a half-bridge multiplying mode and the other portion of the rectifying components are short-circuited and do not operate when the switch is turned on. Thus, the rectifying mode of the rectifying circuit and then an output voltage of the rectifying circuit are adjustable, and the operation voltage range of the wireless electric energy receiving terminal is expanded and the wireless power receiving terminal can operate normally when the magnetic field intensity is relatively high or relatively low.

Abstract: The present disclosure discloses a wireless power transmission system, a wireless power transmitting terminal, a wireless power receiving terminal and a detection method, wherein the wireless power transmission system comprises a wireless power transmitting terminal and a wireless power receiving terminal. The wireless power transmitting terminal intermittently transmits power to the wireless power receiving terminal in a wireless way and the transmitting power of the wireless power transmitting terminal is detected during different time periods. The wireless power receiving terminal is used to wirelessly receive power and supply power to an actual load. The detection method is used to detect the number of coupled wireless power receiving terminals at the wireless power transmitting terminal.

Abstract: The present application discloses a coil module, a wireless power transmitting circuit and a wireless power receiving circuit. By overlapping a plurality of coils with each other and arranging matched capacitance between adjacent coils and matched capacitance at the output of the coil module, the coupling inductance is increased, the circulating current caused by parasitic capacitance between overlapped coils is effectively reduced and charging efficiency is improved while the cross-sectional area of the coil is kept constant.