Method for power self-regulation in a high-power induction type power source

• US 8,772,979 B2
• Filed: 09/20/2011
• Issued: 07/08/2014
• Est. Priority Date: 02/01/2011
• Status: Active Grant

• Current Assignee: Fu Da Tong Technology Co., Ltd.
• Original Assignee: Fu Da Tong Technology Co., Ltd.
• Inventors: Tsai, Ming-Chiu, Chan, Chi-Che
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): PEREZ BORROTO, ALFONSO
• Application Number:
  US13/237,668
• Publication Number:
  US 20120007443A1
• Time in Patent Office: 1,022 Days
• Field of Search: 307/104, 307/149, 307/151, 320/108, 713/300, 713/340
• US Class Current: 307/104
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

Abstract

The present inventions relates to a method for power self-regulation in a high-power induction type power source, wherein the PS module includes a PS microprocessor that is electrically connected to a PS driving unit, signal analysis circuit, coil voltage detection circuit, display unit, PS unit and earthing terminal respectively, and further connected with a resonance circuit and PS coil electrically through the PS driving unit, while the PR module contains a PR microprocessor electrically connected with a voltage detection circuit, breaker protection circuit, voltage stabilizing circuit, AM carrier modulation circuit, DC step-down transformer, rectifying filter circuit and resonance circuit respectively. While transmitting electric power, the PS module receives and analyzes data signals and then regulates the transmitted power through self-regulation programs in the microprocessor, thus achieving the purpose of power self-regulation for the PR module.

Claims

1. A method for power self-regulation in a high-power induction type power source, comprising the following steps:

(a) switching on the power supply (PS) module and power receiving (PR) module, and initializing programs in the PS module;

(b) delivering a detection signal and start-up power from the PS module to the PR module within the inductive range;

(b1) PR module receiving the power start-up program in the detection signal and setting values as necessary;

(b2) transmitting a start-up code from the PR module to the PS module;

(b3) converting the voltage at the detection terminal into numerical value data;

(b4) checking if the converted voltage value at the PR detection terminal exceeds the upper limit of the initial default values, if yes, proceed to step (b5);

otherwise, proceed to step (b6);

(b5) exceeding the upper limit, reconverting the voltage value, interrupting the power supply to the rear P-type MOFSET component and DC step-down transformer, and proceeding to step (b3) again, till the voltage value at the PR detection terminal is smaller than a preset lower limit, or power supply is interrupted and operation is terminated;

(b6) transmitting codes of numerical value data on voltage from the PR module to the PS module;

(b7) waiting for the PS module to regulate power;

(b8) continuing another cycle of converting the voltage and transmitting data codes, till power supply is interrupted and operation is terminated, and proceed to step (b3);

(c) checking if the PS module receives the start-up code;

if yes, proceed to step (d);

otherwise, proceed to step (c1);

(c1) PR module not receiving the start-up code, PS module standing by to transmit a detection signal, and proceeding to step (b) again;

(d) starting continuous power supply from the PS module and setting the initial time for the power supply;

(e) converting the voltage of the power source into numerical value data;

(f) PS timer of the PS microprocessor counting down to check if timing is over;

if yes, proceeding to step (f1);

otherwise, proceeding to step (g);

(f1) PS microprocessor timing over, stopping continuous power supply and cutting off the output power to transmit detection signals instead;

proceeding to step (f2);

(f2) shutting down continuous power supply, removing indicative settings and proceeding to step (a);

(g) checking if complete data are received from the PR module;

if yes, proceeding to step (h);

otherwise, proceeding to step (g1);

(g1) checking if incomplete signals are received;

proceeding to step (g2) in case of unclear signals;

proceeding to step (g4) if there is no any signal;

(g2) PR module not having sufficient receiving power and unable to feed back data codes clear enough to recognize if incomplete signals are received;

(g3) PS module reducing its working frequency and increasing its output power to make the PR module feed back correct data codes, or until power supply timing is over;

(g4) PS module not receiving incomplete signals, no data code transmitted, interrupting the power supply and proceed to step (f2);

(h) comparing the voltage of the power source with that at the detection terminal of the PR module;

proceeding to step (h1) if the voltage at the detection terminal is larger;

proceeding to step (i) if the voltage of the power source is larger;

(h1) the receiving power of the PR module is a little high if the voltage at the detection terminal is larger than that of the power source;

(h2) increasing the working frequency to make the output power decrease;

(i) the receiving power of the PR module is a little low if the voltage of the power source is larger than that at the detection terminal;

(j) checking if the amplitude of the PS coil has reached the preset upper limit;

if not, proceeding to step (k);

if yes, proceeding to step (j1);

(j1) has reached the maximum limit of output power, stopping power increases and proceeding to step (n);

(k) checking if the working frequency in the previous markings has become lower than the maximum resonance point;

if yes, proceeding to step (n);

otherwise, proceeding to step (l);

(l) reducing the working frequency and increasing the output power;

(m) checking if the output amplitude of the PS coil increases following reduction of the working frequency;

if yes, proceeding to step (n);

otherwise, proceeding to step (m1);

(m1) if the amplitude does not increase following reduction of working frequency, it shows that the working frequency has been lower than the maximum resonance point;

make a mark here to indicate there is no need for frequency reduction next time;

(n) power regulation completed;

(o) timer of the PS module microprocessor filling in an initial constant of time and proceeding to step (e) following power regulation.

2. The method for power self-regulation in a high-power induction type power source according to claim 1, wherein the high-power induction type power source consists of a power supply (PS) module and a power receiving (PR) module;

the PS module includes a PS microprocessor in which a comparator is installed, and the PS microprocessor is electrically connected with a PS driving unit that drives the PS module to operate, a signal analysis circuit to detect and analyze coil data signals, a coil voltage detection circuit to detect the voltage of the PS coil, a display unit to display the operational status of the PS module, a PS unit to supply electricity, a resistor divider and an earthing terminal respectively;

the PS driving unit is electrically connected with a resonance circuit, which, together with the coil voltage detection circuit and signal analysis circuit, is respectively connected to a PS coil capable of transmitting electric power and data signals electrically, while a PR coil of the PR module that corresponds to the PS coil is installed for transmission of inductive signals;

the PR module is equipped with a PR microprocessor, which is electrically connected with a voltage detection circuit to detect the voltage of the power source, a breaker protection circuit used for switch control during operation, a voltage stabilizing circuit to stabilize the voltage of the power source, an AM carrier modulation circuit to encode data signals and a DC step-down transformer to stabilize the voltage of the power source respectively, and further connected to a rectifying filter circuit capable of filtering and rectifying power signals electrically via the breaker protection circuit, DC step-down transformer and voltage detection circuit, while the rectifying filter circuit and AM carrier modulation circuit are further connected with the resonance circuit and the PR coil respectively.

3. The method for power self-regulation in a high-power induction type power source according to claim 2, wherein the PS microprocessor contains two sets of comparators, and both comparators include a positive signal input end used for input of data signals and a negative signal input end used for input of reference voltage levels.

4. The method for power self-regulation in a high-power induction type power source according to claim 2, wherein the PS driving unit of the PS module consists of a MOFSET driver, a high-side MOFSET component and a low-side MOFSET component used to adjust the working frequency of the MOFSET driver for changing the switching status of MOFSET, in which the high-side and low-side MOFSET components are electrically connected with the resonance circuit and PS coil respectively.

5. The method for power self-regulation in a high-power induction type power source according to claim 2, wherein the PS unit of the PS module connects to a power source that receives external power supply and two series detection resistor dividers.

6. The method for power self-regulation in a high-power induction type power source according to claim 2, wherein the display unit of the PS module may be a LCD, LED or CLP display.

7. The method for power self-regulation in a high-power induction type power source according to claim 2, wherein the voltage detection circuit of the PR module consists of detection terminals connected electrically in series and two detection resistor dividers, while the rectifying filter circuit of the PR module includes a rectifier and capacitors.

8. The method for power self-regulation in a high-power induction type power source according to claim 2, wherein the AM carrier modulation circuit of the PR module consists of inductors, diodes and MOFSET components in series;

the breaker protection circuit of the PR module comprises resistors, P-type MOFSET components and N-type MOFSET components.

9. The method for power self-regulation in a high-power induction type power source according to claim 2, wherein the voltage stabilizing circuit of the PR module comprises capacitors and DC step-down transformer, and the DC step-down transformer is electrically connected with a PR end.