Abstract: A current signal sensing method for a supplying-end module of an induction type power supply system, wherein the supplying-end module includes a supplying-end coil and a resonant capacitor, includes serially connecting a current sensing element between the supplying-end coil and the resonant capacitor to obtain a current signal corresponding to a current of the supplying-end coil; and interpreting the current signal to retrieve data of a receiving-end module of the induction type power supply system.

Abstract: A method is used for a supplying-end module of an induction type power supply system, for adjusting output power of the induction type power supply system. The method includes driving a supplying-end coil of the supplying-end module by using a first driving signal and a second driving signal, and setting a phase shift quantity between the first driving signal and the second driving signal; detecting a coil signal of the supplying-end coil to determine a peak location of the coil signal; determining a peak deviation rate of the peak location according to a starting point of a period of the second driving signal and a zero load point; and adjusting the phase shift quantity according to the peak deviation rate, in order to adjust the output power.

Abstract: A method of automatically adjusting a determination voltage used in an induction type power supply system includes detecting an output voltage of a signal analysis circuit; adding a first threshold value to the output voltage to generate a first determination voltage and subtracting a second threshold value from the output voltage to generate a second determination voltage; outputting the first determination voltage as a reference voltage; and comparing a trigger signal of the signal analysis circuit and the reference voltage, in order to generate a first data code; wherein when the step of comparing the trigger signal of the signal analysis circuit and the reference voltage in order to generate the first data code fails, the method further includes outputting the second determination voltage as the reference voltage and comparing the trigger signal of the signal analysis circuit and the reference voltage, in order to generate a second data code.

Abstract: An operating clock synchronization adjusting method, for an induction type power supply system, includes receiving a plurality of data pulses, by a supplying-end module, according to a clock of a microprocessor of the supplying-end module, for generating a plurality of data frames. A period between first data pulses corresponding to starting bits of a first detecting data frame and a second detecting frame among the plurality of data frame is calculated, for acquiring a data frame period. A period between the first data pulse of the second data frame and a second data pulse of the second data frame is calculated, for acquiring a bit period. The bit period and a bit time threshold are compared for determining whether to adjust the clock of the microprocessor according to the data frame period and a frame time threshold.

Abstract: A synchronous data transmitting method includes receiving, by a supplying-end module, a plurality of data impulses of power transmitting signal according to a first operating clock of a microprocessor in supplying-end module, for generating a plurality of data frames, wherein the plurality of data impulses is transmitted by receiving-end module according to a second operating clock of microprocessor in receiving-end module; calculating time periods between data impulses corresponding to start bits of the plurality of data frames, for acquiring a plurality of data frame periods; comparing the plurality of data frame periods with a data frame time period, for synchronizing the first operating clock and the second operating clock; and turning on a receiving function of the supplying-end module in a plurality of receiving periods and turning off the receiving function in a plurality of closed periods, wherein the plurality of receiving periods corresponds to the plurality of data impulses.

Abstract: A synchronous data transmitting method includes receiving, by a supplying-end module, a plurality of data impulses of power transmitting signal according to a first operating clock of a microprocessor in supplying-end module, for generating a plurality of data frames, wherein the plurality of data impulses is transmitted by receiving-end module according to a second operating clock of microprocessor in receiving-end module; calculating time periods between data impulses corresponding to start bits of the plurality of data frames, for acquiring a plurality of data frame periods; comparing the plurality of data frame periods with a data frame time period, for synchronizing the first operating clock and the second operating clock; and turning on a receiving function of the supplying-end module in a plurality of receiving periods and turning off the receiving function in a plurality of closed periods, wherein the plurality of receiving periods corresponds to the plurality of data impulses.

Abstract: A method used for an induction type power supply system, for detecting whether an intruding metal exists in a power transmission range of the induction type power supply system, includes interrupting at least one driving signal of the induction type power supply system to stop driving a supplying-end coil of the induction type power supply system; obtaining a first attenuation slope during a first period when driving of the supplying-end coil is stopped, and obtaining a second attenuation slope during a second period when driving of the supplying-end coil is stopped; and determining whether the intruding metal exists in the power transmission range of the induction type power supply system according to the first attenuation slope and the second attenuation slope.

Abstract: A signal analysis method for determining whether a supplying-end module of an induction type power supply system receives a modulation signal from a receiving-end module of the induction type power supply system includes obtaining a coil signal on a supplying-end coil of the supplying-end module; retrieving parts of the coil signal higher than a reference voltage to generate a peak signal; tracking the peak signal to obtain a peak voltage level; configuring a high voltage level higher than the peak voltage level and a low voltage level lower than the peak voltage level; and determining whether a plurality of peak values of the peak signal reach the high voltage level and determining whether the plurality of peak values of the peak signal reach the low voltage level during a determination cycle, and determining whether the supplying-end module receives the modulation signal accordingly.

Abstract: The inductive power supply system comprises an input power module for receiving a stable voltage source, a storage module for storing a predetermined information, a processing module for generating a control signal according to the predetermined information and a feedback signal, a driving module for transforming the stable voltage source into a driving voltage according to the control signal, an inductive coil for electrically transmitting the driving voltage to process an inductive power transmission operation, and a feedback module for generating the feedback signal according to the driving voltage received by the inductive coil, where the predetermined information represents an initial state of the inductive power supply system comprising a sinusoidal amplitude corresponding to the driving voltage, and an intruding metal can affect another sinusoidal amplitude of the feedback signal to make the processing module correspondingly generate the control signal during the inductive power transmission operation.

Abstract: A method used for an induction type power supply system, for detecting whether an intruding metal exists in a power transmission region of the induction type power supply system, includes interrupting at least one driving signal of the induction type power supply system to stop driving a supplying-end coil of the induction type power supply system; detecting an attenuation status of a coil signal on the supplying-end coil when driving of the supplying-end coil is interrupted; and determining whether the intruding metal exists in the power transmission region of the induction type power supply system according to the attenuation status of the coil signal.

Abstract: A signal analysis circuit for a supplying-end module includes a first voltage divider circuit, for attenuating a coil signal of a supplying-end coil; a first amplifier circuit, for obtaining parts of the attenuated coil signal higher than a reference voltage to output a half-wave signal; a first envelope detector, for performing envelope extraction on the half-wave signal to obtain a DC signal; a second voltage divider circuit, for attenuating the half-wave signal; a second amplifier circuit, for obtaining parts of the attenuated half-wave signal higher than the DC signal to output an amplified half-wave signal; a second envelope detector, for performing envelope extraction on the amplified half-wave signal to generate an envelope signal; a coupling capacitor, for filtering out the DC component of the envelope signal; a third voltage divider circuit, for combining the AC component of the envelope signal with a DC voltage to retrieve a trigger signal.

Abstract: An induction coil structure for a wireless charger includes at least one first coil, at least one second coil, a first magnetic conductor and a second magnetic conductor. The first coil is disposed in a first layer of an induction coil. The second coil is disposed in a second layer of the induction coil. The first magnetic conductor is located between the first coil and the second coil, wherein a first surface and a second surface of the first magnetic conductor are superposed on the first coil and the second coil, respectively. The second magnetic conductor is superposed on a surface of the second coil that is not superposed on the first magnetic conductor. The first magnetic conductor includes a hole, and a wire for winding the first coil extends from the first layer to the second layer via the hole, to wind the second coil.

Abstract: A voltage measuring method for a supplying-end module of an induction type power supply system includes generating a coil signal on a supplying-end coil of the supplying-end module; clamping the coil signal to generate a clamp coil signal; performing signal processing on the clamp coil signal to generate a first signal and a second signal, respectively; generating a cyclic signal, a frequency of which is equal to a frequency of the coil signal; comparing the first signal and the second signal via a comparator to obtain a first time and a second time when the first signal and the second signal have an equal voltage level during a cycle of the cyclic signal; calculating a middle time of the first time and the second time; and sampling the clamp coil signal or the coil signal to obtain a peak voltage of the coil signal according to the middle time.

Abstract: A signal modulation method for a receiving-end module of an induction type power supply system includes configuring a plurality of modulation periods corresponding to a modulation signal; performing modulation on a first terminal of an induction coil of the receiving-end module during the ith modulation period among the plurality of modulation periods, wherein i is an odd number; and performing modulation on a second terminal of the induction coil of the receiving-end module during the jth modulation period among the plurality of modulation periods, wherein j is an even number; wherein the second terminal does not undergo modulation when the first terminal is being modulated, and the first terminal does not undergo modulation when the second terminal is being modulated.

Abstract: An induction type power supply system with synchronous rectification control for data transmission is disclosed to include a supplying-end module with a supplying-end coil and a receiving-end module with a receiving-end coil for receiving power supply from the supplying-end coil and providing a feedback data signal to the supplying-end coil during power supply transmission subject to the operation of a rectifier and signal feedback circuit of the receiving-end module that breaks off electric current transiently to change the load characteristics of the receiving-end coil, assuring a high level of data signal transmission stability and a high level of power transmission efficiency.

Abstract: The present invention provides a method of time-synchronized data transmission in induction type power supply system, comprising timers and programs installed in a supplying-end module and a receiving-end module to predict the time for generating the trigger signal at the receiving-end end and perform steps for detecting signals to avoid omission. Under the condition of high power transmission, power output on the supplying-end coil is pre-reduced prior to the time expected for receiving trigger data, making the main carrier wave amplitude decrease in a short time period. In every process of data transmission, timers are mutually calibrated and synchronized again to transmit power without detecting and receiving in the period when no data are expected to be transmitted, thus preventing interference of power load noise and enabling the induction type power supply system to transmit data code stably.

Abstract: An inductive charging system for vehicles includes a power receiving (PR) device disposed in a vehicle, and a power sourcing (PS) device disposed in a charging equipment separated from the vehicle.

Abstract: A low-loss data transmission method used in a high-power induction-type power supply system consisting of a supplying-end module and a receiving-end module is disclosed. The supplying-end microprocessor of the supplying-end module has built-in anti-noise signal analysis software that can remove noises from the data signal fed back by the receiving-end module, assuring high stability of the transmission of data signal and reducing energy dissipation of data transmission. Subject to a special circuit arrangement of the receiving-end coil of the receiving-end module, signal modulation is performed on a low voltage DC square wave, assuring a high level of stability of the supplying of power supply to the receiving-end module.

Abstract: A data determination method for a supplying-end module of an induction type power supply system includes generating a current signal on a resonant coil of the supplying-end module according to a modulated signal of a receiving-end module of the induction type power supply system fed back from a resonant coil of the receiving-end module to the resonant coil of the supplying-end module; amplifying the current signal to retrieve a plurality of peak values of the current signal; setting a reference voltage according to magnitudes of the plurality of peak values; comparing the plurality of peak values with the reference voltage to generate a comparison result; and analyzing the comparison result to obtain modulation data of the receiving-end module of the induction type power supply system.

Abstract: A high-power induction-type power supply system includes a supplying-end module consisting of a supplying-end microprocessor, a power driver unit, a signal analysis circuit, a coil voltage detection circuit, a display unit, a power supplying unit, a resonant circuit, a supplying-end coil and a shunt resistor unit, and a receiving-end module consisting of a receiving-end microprocessor, a voltage detection circuit, a rectifier and filter circuit, an amplitude modulation circuit, a protection circuit breaker, a voltage stabilizer circuit, a DC-DC buck converter, a resonant circuit and a receiving-end coil. Subject to time series arrangement, the high-power induction-type power supply system allows transmission of data signal in a stable manner during a charging operation, assuring system operation stability and low power loss. By means of bi-phase decoding, data code is accurately decoded when the receiving-end module is at full load, ensuring system operating reliability.