TWI258260B - Variable-frequency induction charger and portable electronic device using the same - Google Patents

Abstract

The present invention relates to a variable-frequency induction charger, which is composed of an electromagnetic field generation and secondary coil sensing loop, a detection and modulation generation circuit and a control switch circuit. With the aforementioned device, it is able to not only charge an electronic device electro-magnetized therewith, but also make the detection and modulation generation circuit generate pulse signals with different frequencies by varying the distance between the portable electronic device and the charging device, so as to achieve the purpose of effective power management.

Description

1258260 belongs to the department, especially the pulse wave technology produced by the time.] The movable toothbrush headphone, device, the former custom is based on the induction technology, and the technology leads to a kind of negative 5 tiger's portable, electric Wireless tour in order to charge the charging method 5. Description of the invention (1) First, [invention of the present invention, the distance between the charging device changes the frequency of the second type, [previously pressed, not limited to the electric mouse, wireless has a Charging line charging. Some of the electricity, some of the charging equipment is gradually eliminated. The field can be changed from portable to portable, so that the power supply has an electronic or electric razor... The controller is somewhat powered by the charging device. Wherein, the sensing device with the charging of the non-electronic device and the charging device of the charging device are used for the purpose of efficiency management after induction. Peripheral devices, including home appliances, or computer peripherals such as wireless devices, have been disadvantaged by the contact point contact and charging points of the portable device.

The computer peripheral charging device that is charged inductively, for example, the patent of the Republic of China, which has been approved by the Republic of China, No. 551560 (Application of the Republic of China, 91, March 26, 1992, September 01) a power supply device, which provides a wireless mouse inductive power supply device; mainly composed of a wireless mouse and a mouse pad; characterized in that: a wireless mouse; its internal bottom end is in a proper position, An induction coil is disposed in parallel with a capacitor of a power supply circuit to form a parallel resonant circuit, and then connected to the charging capacitor via a path of the diode to supply the wireless wireless signal transmitting circuit of the wireless mouse; Mouse 塾·, the coil is embedded in the mouse ,, or the coil is formed by applying a printed circuit, and

1258260

V. Description of the invention (2)

The coil is connected to a power line for inputting a power source; therefore, when the power source is wheeled into the coil of the mouse to generate a magnetic wave, and the magnetic wave signal is received by the induction coil in the wireless mouse, the induction coil generates a The electromotive force is parallel resonance with the capacitor, so that the signal is charged through the diode path, and the charging/electric capacitor is charged, and the power is outputted to the wireless signal transmitting circuit board inside the wireless mouse, so that the wireless mouse can be used remotely. In the operation of the computer, the power supply of the wireless mouse is endless, so as to avoid the occurrence of power shortage or power failure in the use of the wireless mouse, and the convenience of use is achieved. The patent generates an electromotive force by an induction coil and resonates in parallel with the capacitor, so that the signal is charged through the diode path to charge the charging capacitor, but it does not have the ability to change the load, so that when not charging The power of the induction coil is still continuously converted, resulting in waste of power conversion.

For example, the Patent No. 53534 No. 1 (Approved by the Republic of China on September 07, September 07, and the June 1, 1992 announcement), "Wireless Surroundings of Information Systems Charging by Electromagnetic Induction", The wireless indicator device is configured to be charged by using an inductive power supply I; the inductive power supply device comprises: a base; the base is provided with a platform; and a first induction coil is mounted on the The position of the corresponding platform in the pedestal is used to convert the power of a power source into an induced magnetic field and emit it; and the wireless indicator device comprises: a housing provided with a pair of contact surfaces of the platform; at least one control a button is mounted on the housing for generating a corresponding control signal according to a user operation; a signal module electrically connected to the -hai control button is configured to output the control signal by radio; the second induction coil, Mounted in the housing corresponding to the position of the contact surface for magnetic sense

1258260 V. Description of the invention (3) The magnetic field passing through the contact surface is received in a manner; the power module is electrically connected to the second induction coil 'for converting the induced magnetic field received by the second induction coil into electric f' And a power storage module for storing power of the power module to supply power required for operation of the wireless indicator device; wherein when the user places the contact surface of the wireless H device on the platform of the inductive power supply device The second induction coil of the wireless indicator device receives the induced magnetic field of the first induction coil to supply power to the wireless indicator device from the inductive power supply device. The patent system receives the induced magnetic field of the first sensing line f by the second induction coil, so that the wireless indicator device is supplied with power by the inductive power supply, but it has no ability to detect load changes. As a result, the power of the induction coil is continuously converted when the battery is not charged, resulting in waste of power conversion.

For example, the "Personal Digital Assistant Electromagnetic Induction Charging Device" of the Patent No. 5 5 5 2 8 6 (Approved by the Republic of China on December 7, 1990, announced on September 21, 1992) Providing an electromagnetic induction charging device for a personal digital assistant, which utilizes an electromagnetic induction method for transmitting electrical energy. The electromagnetic induction charging device of the personal digital assistant comprises: an electric, inductive charging base for converting charging electrical energy into an induced current And transmitting to a number of assistants; and an electromagnetic induction charging interface for fitting the personal digital assistant to the electromagnetic induction charging stand and receiving the induced current from the electromagnetic induction charging stand. The patent case uses electromagnetic induction to transmit power, but it does not have the ability to detect load changes, so that the power of the induction coil is continuously converted when it is not charged, resulting in waste of power conversion, which is a drawback.

Page 7 1258260

V. INSTRUCTIONS (4) As can be seen from the above, the contact type charging device has the following disadvantages: (1) the contact point type charging device has a defect that the contact point has poor contact; and (2) the contact is directly exposed due to the contact or the joint. Under the environment, therefore, it does not have the effect of ESD/electro-static discharge. In addition, the inductive charging device described above does not have the ability to detect a load change so that the power of the induction coil is continuously switched when not being charged, resulting in waste of power conversion. Therefore, there is a need for a variable frequency inductive charging device that generates a pulse signal output of different frequencies after sensing by a load change generated when the distance between the portable electronic device and the charging device is different, and the portable electronic device The device is charged to achieve effective power management purposes to improve the shortcomings of conventional charging devices. III. [Invention] The present invention achieves the charging of the power supply by the change of the portable load: the electromagnetic coil, the modulation generation circuit, and the detection of one-eye electronic equipment, so that the charging is effectively managed. Another electronic device of Ming. The above-mentioned field of view generates and senses the circuit, and the system for coupling the sensing provides a variable frequency induction inductive charging device and a distance change between the remote charging device, and the device generates a variable frequency pulse signal for sensing. Charging device. The object of the invention is to provide a variable frequency induction charging device which can be inserted into the above-mentioned variable frequency induction charging device, and the primary coil induction circuit of the variable frequency induction charging device of the invention can be electromagnetically coupled to the electromagnetic field generated by the induction coil; It is connected to the electromagnetic field generation and the electromagnetic field change of the secondary coil induction coil, and according to the output is not generated, the device is electrically packaged to sense and return the same frequency.

1258260

a pulse signal of the rate; and a control switch circuit coupled to the electromagnetic field generating and secondary coil sensing circuit, according to the pulse signal to control the action of the switch '俾 由 a a a a 可 between the portable electronic device and the charging device The load change caused by the change of the distance causes the detection and modulation generating circuit to generate pulse signals of different frequencies to achieve effective power management.

For the above purpose, the portable electronic device with the variable frequency inductive charging device of the present invention comprises: an induction coil electromagnetically coupled to the variable frequency inductive charging device to sense an electromagnetic field change generated by the electromagnetic field generating circuit and Converting it into a power signal; a rectifier circuit, a coupling coil, can rectify the power signal into a continuous current, coupled to the rectifier circuit, and can be charged by the DC power source to supply the portable electronic device The DC power supply; and the device circuit, connected to the rechargeable battery, can control the portable electronic device to perform related movements. To enable the reviewing committee to further understand the structure, the special purpose and the purpose of the present invention, DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIG. 1 , a schematic diagram of the configuration of the variable frequency inductive charging portable electronic device of the present invention is shown. As shown in the figure, the inductive charging device 1 of the present invention comprises a base 10 having a sensing area for charging and charging the portable electronic device 2. Wherein, the electronic device 2 of the present invention includes, but is not limited to, an electric toothbrush, an electric scraper, a household appliance, and a wireless device.

Page 9 1258260 V. Invention Description (6) Wireless headset, wireless game controller, etc. (computer peripheral devices). In this case, a common computer mouse is taken as an example, wherein the base 1 can be integrated with a wireless signal receiver for common use. Referring to Figure 2, there is shown a block diagram of the variable frequency inductive charging device of the present invention. As shown in the figure, the variable frequency inductive charging device of the present invention includes a power input 埠12, an electromagnetic field generating and secondary coil sensing circuit 13; a detecting and modulating generating circuit 14; and a control switch circuit 丨5 combined to make. Wherein the power input port 1-2 is connected to the control switch circuit 15 5 to supply the DC power required by the variable frequency inductive charging device 1, such as but not limited to a USB, PS2 or external power supply. DC power input to the adapter. The electromagnetic field generating and secondary coil sensing circuit 13 includes a primary coil L11 and a secondary coil L 1 2, and is electromagnetically coupled to the induction coil 2 1 of the portable electronic device 2 (please refer to FIG. 3 ), which can The electromagnetic field generated by the different distances between the portable electronic device 2 is sensed, and the electromagnetic field is generated according to the variable frequency pulse signal outputted by the detecting and modulation generating circuit 14. The detection and modulation generating circuit 14 is, for example but not limited to, a Pulse Frequency Modulation (PFM) generating circuit, which is lightly connected to the electromagnetic field generating and secondary coil sensing circuit 13 The induction coil 2 1 (please refer to FIG. 3 ) is detected and its electromagnetic field changes, and the pulse wave signals of different frequencies are output according to the vibration. The control switch circuit 15 is, for example but not limited to, a group of transistors

Page 10 1258260

The light system is connected to the electromagnetic field to generate an electromagnetic field according to the opening or closing of the body switch of the detection and modulation generating circuit. In addition, the circuit 16 is, for example but not limited to, the switching circuit 15 to limit the flow over control overload protection. And a primary coil inductive loop 13 , the pulse signal generated by the root to control the electromagnet, the electromagnetic field generation and the secondary coil induction. The invention may further comprise an overload protection transistor, which is connected to the control switch circuit 1 5 current to reach

Please refer to FIG. 3 for the purpose of the variable frequency inductive charging device of the present invention. As shown, the portable electronic device 2 includes a housing 20, and the housing 20 is preferably placed in the sensing area u of the base 1 for charging. The portable electronic device 2 further includes: an induction coil 21; a rectifier circuit 22; a rechargeable battery 23; and a device circuit 24. The induction coil 21 is electromagnetically coupled to the electromagnetic field generation and secondary coil induction circuit 丨3 of the variable frequency induction charging device 1 to sense the electromagnetic field change generated thereby and convert it into a power signal. The rectifying circuit 22, for example, but not limited to, a full-wave rectifying or half-wave rectifying circuit, coupled to the inductive coil 2 1, can rectify the power signal into a DC power source, and the DC power source can be used in addition to the rechargeable battery In addition to charging, the device circuit 24 can also be used. The rechargeable battery 23 is coupled in parallel to the output end of the rectifier circuit 22 for charging using the DC power source. When fully charged, the rechargeable battery 23 is provided with a DC power source required for the device circuit 24 to operate. . In addition, the portable electronic device 2 of the present invention is further applicable to the rechargeable battery 23 and the device.

1258260 V. INSTRUCTION DESCRIPTION (8) ------ There is a switching circuit 25 between the circuits 24 to control the operation of the device circuit ί u circuit 25, such as but not limited to - manual switch or automatic switch, when switching When the circuit 25 is an automatic switch, it is composed of, for example but not limited to, a transistor circuit for automatic switching purposes. Please refer to FIG. 4, which is a schematic diagram showing the use of the variable frequency inductive charging device of the present invention in combination with the portable electronic device 2. As shown in the figure, the portable electronic device 2 of the present invention can be placed in the sensing area u of the susceptor 1 for charging. The operation principle is as follows: first, the power supply vcc is input via the power supply 埠1, the control switch circuit 15, the electromagnetic field generation and the secondary coil induction circuit 13 are input to the detection and modulation generation circuit 丨4 as a reference voltage, when the voltage is lower than At the reference voltage, the detection and modulation generating circuit 丨4 outputs a continuous pulse signal. When the voltage is higher than the reference voltage, the detection and modulation generating circuit i 4 has a low output frequency and is intermittent. Pulse signal. At the beginning of the power input, the voltage is stepped down by the components, so that the reference voltage does not reach the set voltage (for example, DC 5V, which can be changed as needed) is lower than the reference voltage, and the debt measurement and modulation generating circuit 丨4 outputs a pulse wave. Signaling to the control switch circuit 15 5 'acts a switch (for example, a transistor) in the control switch circuit 丨 5 to further generate a voltage by the electromagnetic field generation and the primary coil LI 1 of the secondary coil induction circuit 丨3 to generate an electromagnetic field. When the primary coil L11 is converted to the electromagnetic field, the secondary coil L1 2 senses that a voltage is supplied in series with the v CC to the debt measurement and modulation generating circuit 14 , and the detection and modulation generating circuit 丨 4 can measure the debt. At this voltage level. At this time, if the primary coil L1 i has no external load (ie, the induction coil 21 of the portable electronic device 2, the rectifier circuit 22, the rechargeable battery 23, and the device circuit 2 4 ), the potential induced by the secondary coil 112 Will rise

Page 12 1258260 V. Invention Description (9) In the south, when the voltage level reaches the reference voltage, the detection and modulation generation circuit 14 stops the pulse signal output, and then waits for the potential to discharge below the reference potential. Oscillation, produces a very low frequency and intermittent pulse signal output, and detects whether there is an external load to avoid the waste of power.

When the right primary coil L1 1 has an applied load (that is, the portable electronic device 2) approaches, the potential induced by the secondary coil L12 due to the load effect is also lowered relative to kk, when the applied load is closer to the charging device (for example) The portable electronic device 2 is directly placed in the base 10 of the variable frequency inductive charging device device; or the different portable electronic devices have different heights of the inner induction coils and use the same charging When the device is turned on, the voltage induced by the secondary coil L12 plus the voltage of vcc will be lower than the reference voltage, and the detection and modulation generating circuit 14 will output a higher frequency and a continuous pulse signal. The pulse signal generates an electromagnetic field via the primary coil L丨丨 and is coupled to the induction coil 2 1 'to be rectified via the rectifier circuit 2 2 to charge the rechargeable battery 23 . Therefore, the variable frequency inductive charging device 1 of the present invention can make the detection and modulation generating circuit 丨4 by the load change generated by the distance between the induction coil 21 and the sensing region n in the portable electronic device 2. Outputting pulse signals of different frequencies and charging the portable electronic device 2 for the purpose of effective power management can indeed improve the ability of the conventional inductive charging device to have no detected load change, so that When the power is not charged, the power of the induction coil is continuously converted, which causes a disadvantage of power conversion waste. Therefore, through the implementation of the present invention, the load change caused by the distance between the portable electronic device 2 and the sensing area 11 is different. Charging device

Page 13 1258260 V. Description of the invention αο) After the induction, the frequency conversion type pulse wave signal is generated, and the charging coil is rectified by the electromagnetic coupling to the induction coil to recharge the rechargeable battery to achieve the purpose of effective power management. The disadvantages of the conventional charging device can be solved. The disclosure of the present invention is a preferred embodiment, and any part of the modification or modification resulting from the technical idea of the present invention can be easily inferred by those skilled in the art. In the case of knowing the purpose, the purpose, the means and the effect, in the display, the technical characteristics of the knowledge, and its first invention is practical, and also in the FI = ^ t Ming patent requirements, please ask your review board And pray for the patent "俾嘉惠", I feel really good.

Page 14 1258260 Schematic description

V. [Simple Description of the Drawings] FIG. 1 is a schematic view showing the configuration of the variable frequency inductive charging device and the portable electronic device 2 of the present invention. 1 is a schematic diagram showing the frequency conversion type induction charging of the present invention. Concentricity 1 Figure 3 is a schematic view. FIG. 4 is a schematic diagram showing the combination of the variable frequency inductive charging event of the present invention and the portable electronic device 2.罝 [Graphic component label description] Inverter type inductive charging device 1 Base 1 〇

Portable electronic device 2 Induction area 1 1 Power input 埠1 2 Electromagnetic field generation and secondary coil induction circuit i 3 Detection and modulation generation circuit 1 4 Control switch circuit 1 5 Overload protection circuit 16 Case 20 Induction coil 21 Rectification Circuit 2 2 rechargeable battery 23 device circuit 24 switching circuit 2 5 primary coil L 11 secondary coil L1 2

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Claims (1)

1258260 VI. Patent application scope 1. Charging, induction charging line coil sense output should not be looped. The pulse source generated by the required source is valid. The electric field of the electric device is changed to detect and respond to the same frequency control. According to the power supply, the power supply is controlled by the load, and the management is as in the application. The frequency-detection portable has the function of generating the inductive modulation, and the pulse-switching power of the pulse is coupled to the portable port, and according to the patented peripheral patent source source. The patented measuring and inductive charging device can be used for a portable electronic device type electronic device having an induction coil, and the variable frequency and secondary coil induction circuit can be electromagnetically combined to the electromagnetic field change generated by the induction coil; And coupling to the electromagnetic field to generate and secondly detect the electromagnetic field change of the induction coil, and according to the wave signal; and the road 'connected to the electromagnetic field generating and the secondary coil sensing signal to control the action of the switch; Controlling the switch circuit to supply different distances between the charging device and the charging device, so that the anti-detection and modulation generating circuit generates different frequencies to charge the portable electronic device to achieve the first power meter The variable frequency induction charging device described in the above item can be any of the following: a wireless home appliance device. The variable frequency induction charging device described in item 1 is input by USB, PS2 or an external power adapter, and the frequency-inducing charging device of the first item described above is preferably a pulse frequency. Modulation Page 16 1258260 VI. Application ΐίίϊϊΐ ' ' ' " ' Generate circuit. 5. The variable frequency inductive charging device of claim 1, wherein the control switch circuit is preferably composed of a transistor circuit. 6. The variable frequency inductive charging device of claim 1, further comprising an overload protection circuit coupled to the control switch circuit for current limiting and overload protection purposes. 7. The variable frequency inductive charging device of claim 1, further comprising a base for the portable electronic device to be inserted for charging. 8· A portable electronic device capable of charging by electromagnetic coupling and a variable frequency induction _ charging device, wherein the variable frequency induction charging device has an electromagnetic field generating and secondary coil sensing circuit, and a pulse frequency modulation generating circuit. The portable electronic device has at least: an induction coil, which can sense the electromagnetic field generated by the electromagnetic field generation and the secondary coil induction circuit and convert it into a power signal; a rectifier circuit is coupled to the induction coil, and the The power signal is rectified to become a DC power source; a rechargeable battery is coupled to the rectifier circuit, and the DC power source can be used for charging to supply a DC power source required for the portable electronic device; and a device circuit coupled To the rechargeable battery, the portable electronic device can be controlled to perform related operations. 9. The portable electronic device of claim 8, wherein the portable electronic device can be any one of the following: a wireless home appliance device, and a wireless computer peripheral device. Page 17 1258260 VI. Application for Patent Range 1 0. The portable electronic device of claim 8 is further provided with a switching circuit between the rechargeable battery and the circuit of the device to control the operation of the device circuit. 11. The portable electronic device of claim 1, wherein the switching circuit is a manual or automatic switch. 12·—a portable electronic device with a variable frequency inductive charging device, wherein the “Hi-portable electronic device can be electromagnetically coupled to the variable frequency inductive charging device for charging, wherein the variable frequency inductive charging device has: an electromagnetic field The generating and secondary coil sensing circuit can sense the electromagnetic field change generated by the sensing line _ ring; a detecting and modulating generating circuit coupled to the electromagnetic field generating and the secondary coil sensing circuit, wherein the sensing coil can be tested The electromagnetic field changes, the data is output to pulse signals of different frequencies; and a control switch circuit is connected to the electromagnetic field generating and the secondary coil sensing circuit to control the switch according to the pulse signal; the portable electronic The device has at least: an induction coil electromagnetically coupled to the electromagnetic field generating and secondary coil inductive loop 'to sense the electromagnetic field change generated by the electromagnetic coil and convert it into a power signal; a rectifier circuit coupled to the induction coil The power signal is rectified to become a DC power source; a rechargeable battery coupled to the rectifier circuit can This DC power is charged "to the desired supply of the portable electronic device of a DC power supply; and Page 18 1258260 6. Applying for a patent range, a device circuit coupled to the rechargeable battery can control the portable electronic device for related operations; 俾 a load change caused by a difference in distance between the induction coil and the charging device, The detection and modulation generating circuit generates pulse signals of different frequencies 'and charges the rechargeable battery accordingly' for the purpose of effective power management. 1 . The portable electronic device of claim i, wherein the portable electronic device can be any of the following: a wireless home device, a wireless computer peripheral device. The portable electronic device of claim 12, wherein the variable frequency inductive charging device has a power input port and is coupled to the control switch circuit to supply the required power supply. . The portable electronic device of claim 1, wherein the detecting and modulating generating circuit is a pulse frequency modulation generating circuit. The portable electronic device of claim 12, wherein the variable frequency inductive charging device further comprises an overload protection circuit coupled to the control switch circuit to achieve current limiting and overload protection. The purpose. The portable electronic device of claim 12, wherein the variable frequency inductive charging device further comprises a base, and the portable electronic device can be inserted to charge the portable electronic device. The portable electronic device of claim 12, further comprising a switching circuit between the rechargeable battery and the device circuit, Page 19 • 1258260 VI. Scope of Application To control the operation of the circuit of the device. The portable electronic device of claim 12, wherein the switching circuit is a manual or automatic switch. Page 20