KR100806562B1 - Contactless charging system - Google Patents

Abstract

The present invention relates to a contactless charger capable of wireless data communication and power transmission, and a portable terminal using the same. Solid-state chargers include USB connectors, USB driver circuits, main CPUs (MPUs), FET drive drive circuits, LLC full bridge series resonant converters, primary side coils, secondary side coils, bimetals, dust and odor detection sensors, ion generators, current A feedback circuit, a temperature sensing circuit, and a secondary side signal feedback circuit are included, and the secondary side coil is connected to the full bridge rectifying circuit of the portable terminal. Battery packs in portable terminals are designed for circuits with ID and foreign material detection, charge-state feedback charging circuits on off and signal-to-USB conversion, charging circuits, battery capacity check circuits, battery protection circuits, PTC and batteries, and mobile phones. It includes a built-in USB circuit. Therefore, the contactless charger is a contactless power transmission device using induced electromotive force using the output of the USB port of TC, TA, and PC as a power input to enable wireless data communication and wireless charging between the portable terminal and the computer at the same time. The battery pack with the built-in secondary charging module provides a foreign material detection function that blocks charging when another metal foreign material is loaded on the battery pack.

Wireless data communication, power transmission, solid state charger

Description

Contactless Charging System {NON-CONTACT CHARGING SYSTEM}

1 is a configuration diagram of a contactless charger using a core-to-core communication method and a contactless charger for transferring data and power with a portable terminal according to an embodiment of the present invention. .

2 is a view showing a contactless charger with a built-in IrDA transceiver module according to the present invention.

3 is a block diagram of an IRDA port embedded in a contactless charger according to another embodiment of the present invention, a portable terminal, an infrared communication method, and a contactless charger for delivering power.

Figure 4 shows an embodiment using a charger, adapter, USB port using a 24-pin connector in a contactless charger as an input.

5 is a block diagram of a contactless rechargeable battery pack (hard pack).

Figure 6 is a semi-inner pack configuration for contactless charging applicable to a mobile phone.

7 is an assembly view of a built-in battery pack for contactless charging according to the first embodiment (circuit board top surface arrangement).

8 is an assembly view of a built-in battery pack for contactless charging according to a second embodiment (circuit board top surface arrangement).

9 is an assembled battery pack for contactless charging according to a third embodiment (circuit board side arrangement).

10 is a block diagram of a battery pack having a wireless power receiving module.

<Explanation of symbols for the main parts of the drawings>

1: USB connector 2a: USB driver circuit

3: Main CPU (MPU Block) 4: FET Drive Drive Circuit

5: LLC full bridge series resonant converter 6: primary side coil

7: secondary coil 8: bimetal

9: dust and odor detection sensor 10: ion generator

11: current feedback circuit 12: temperature sensing circuit

13: Secondary side signal feedback circuit 14: Full bridge rectifier circuit

15: ID and foreign material detection, charging status feedback charging circuit on off function,

    Adapter Control Block with Signal-to-USB Conversion

16: charging circuit 17: battery capacity check circuit

18: battery protection circuit 19: PTC and battery

20a: USB circuitry built into the phone 2b: USB-to-IrDA driver circuit

20b: IrDA circuit embedded in the mobile phone

The present invention relates to a contactless charger capable of wireless data communication and power transmission, and a portable terminal using the same, and more particularly, to a contactless power transmission apparatus using induction electromotive force using the output of the USB port of TC, TA, PC as a power input. A contactless charger capable of wireless data communication and power transfer, which simultaneously enables wireless data communication and wireless charging between a portable terminal (mobile phone, PDA, MP3 player, DAB or DMB terminal, PMP, handheld terminal, etc.) and a PC. It relates to a portable terminal used.

In addition, the foreign material detection function that can detect and block when a metal foreign material other than the battery pack (pack with a built-in secondary wireless charging module) of the portable terminal to be charged is recognized and the battery pack of the portable terminal is recognized and charged The present invention relates to a contactless charger having an identification function capable of recognizing a state, capable of wireless data communication and power transmission having an overload and temperature protection function, and a portable terminal using the same.

Conventionally, when a heterogeneous metal body is placed on a contactless charger, a phenomenon in which the metal body causes heat loss due to eddy current due to induced electromotive force occurs, resulting in overheating. This has been recognized as the problem that most affects the stability of the contactless charger using induction electromotive force.

Therefore, there is a problem that must be equipped with a safety device from the risk of overheating by cutting off the power by recognizing all metal objects in the life such as coins, metal pens, scissors, and the like.

However, portable terminals (mobile phones, PDAs, MP3 players, DAB or DMB terminals, PMPs, handheld terminals, etc.) and PCs are based on contactless transmission technology using induced electromotive force using the output of TC, TA, and PC USB ports as power inputs. There has been a problem in that a non-contact charger is provided which enables simultaneous wireless data communication and wireless charging.

The present invention has been proposed to solve the problems of the prior art, an object of the present invention is a portable terminal (mobile phone, by contactless power transmission using induction electromotive force using the output of the USB port of TC, TA, PC as a power input) To provide wireless data communication and wireless charging between the PDA, MP3 player, DAB or DMB terminal, PMP, Handheld terminal, etc.) and PC at the same time, and to provide a contactless charger and a portable terminal using the same. will be.

In addition, another object of the present invention, the foreign matter detection function that can detect and block when a metal foreign matter other than the battery pack (pack with a built-in secondary wireless charging module) of the portable terminal to be charged, and portable The present invention provides a contactless charger having an identification function capable of recognizing a battery pack of a terminal and recognizing a charging state, and having a function of overload and temperature protection, capable of wireless data communication and power transmission, and a portable terminal using the same.

In order to achieve the object of the present invention, the contactless charging system according to the present invention,
A contactless charger capable of wireless data communication and power transmission is provided, and includes a portable terminal capable of wireless data communication and power transmission.
The contactless charger may include a USB connector for connecting to a USB port of a computer and a notebook; A USB driver circuit connected to the computer, the notebook and the USB connector, and configured to receive music, video and data and to emulate the USB protocol; A main CPU (MPU block) for controlling internal elements of the wireless charger; A FET drive drive circuit including a bootstrap gate driver; LLC Full-bridge Serial Resonator Converter; FPCB, PCB, coil, ferrite core is included as a separate transformer, the signal is synthesized by wireless transmission under the control of the main CPU (MPU block) and transmitted to the secondary coil of the battery pack built in the portable terminal A primary coil for making; A bimetal that is inserted in series to the CL resonator when the function of the chip inside the contactless charger is paralyzed and breaks when the primary coil is overheated; A dust and odor detection sensor for detecting dust and odor of the contactless charger; An ion generating device for spraying antibacterial spray for generating negative ions and eradicating bacteria; The ID of the battery pack is recognized by the charging module of the primary coil through a secondary wireless charging module and load modulation embedded in the battery pack of the portable terminal, and the voltage of the secondary rectifying stage of the battery pack is determined. A current feedback circuit for stable power control by current feedback through a primary frequency automatic variable algorithm so as to control at a constant voltage at all times; A temperature sensing circuit for sensing the temperature of the charging chip; And a secondary side signal feedback circuit for feeding back a signal of the secondary side coil of the battery pack.

The battery pack,
ID and debris detection, charging status feedback charging circuit on off function, adapter control block with signal-to-USB conversion, charge management block, battery gauge check circuit, A battery protection circuit, a PTC and a battery, and a USB circuit embedded in a mobile phone may be included.

In addition, the portable terminal,
A mobile phone, a PDA, an MP3 player, a DAB terminal, a DMB terminal, a portable music player (PMP), or a handheld terminal may be provided.

And the contactless charger,
When the music, video, and data stored in the computer (PC) and the notebook are synthesized and wirelessly transmitted to the primary coil using the USB connector, the USB driver circuit, and the main CPU (MPU block), the Separating the signal transmitted from the secondary coil of the battery pack built in the portable terminal through the frequency shift method (FSK), and stores the data of the received signal to the storage medium of the portable terminal via a wired USB controller The primary coil is provided as a separate transformer composed of any one of FPCB, PCB, Coil and Ferrite core, and the secondary coil is composed of any one of FPCB, PCB, Coil and Ferrite core. It may be provided as a separate transformer.

Furthermore, the present invention is a contactless charging system comprising a contactless charger capable of wireless data communication and power transmission, and comprising a portable terminal capable of wireless data communication and power transmission, the contactless charger,
The contactless charger may include a USB connector for connecting to a USB port of a computer and a notebook; A USB-to-IrDA driver circuit connected to the computer, the notebook and the USB connector and configured to receive music, video, and data and to emulate the USB-to-IrDA protocol; A main CPU (MPU block) for controlling internal elements of the wireless charger; A FET drive drive circuit including a bootstrap gate driver; LLC Full-bridge Serial Resonator Converter; It is equipped with a separate transformer composed of FPCB, PCB, coil, and ferrite core, and synthesizes the signal under the control of the main CPU (MPU block) and transmits it wirelessly to transmit to the secondary coil of the battery pack built in the portable terminal. Primary coil; A bimetal that is inserted in series to the CL resonator when the function of the chip inside the contactless charger is paralyzed and breaks when the primary coil is overheated; A dust and odor detection sensor for detecting dust and odor of the contactless charger; An ion generating device for spraying antibacterial spray for generating negative ions and eradicating bacteria; The ID of the battery pack is recognized by the charging module of the primary coil through a secondary wireless charging module and load modulation embedded in the battery pack of the portable terminal, and the voltage of the secondary rectifying stage of the battery pack is determined. A current feedback circuit for stable power control by current feedback through a primary frequency automatic variable algorithm so as to control at a constant voltage at all times; A temperature sensing circuit for sensing the temperature of the charging chip; And a secondary side signal feedback circuit for feeding back a signal of the secondary side coil of the battery pack.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a contactless charger using a core-to-core communication method and a contactless charger for transferring data and power with a portable terminal according to an embodiment of the present invention. to be. As shown in FIG. 1, the contactless charging system according to the present invention is composed of a contactless charger, a portable terminal, and a battery pack connected to a computer.

The contactless charger for transferring data and power between the contactless charger and the portable terminal using the core-to-core communication method may include a USB connector (1) for connecting to a USB port of a computer or a laptop. Connects to a computer, laptop, and USB connector to control the internal components of a USB Emulation Control Block (2a) and a Wireless Charger to receive music, video and data and to emulate them with the USB protocol. Main drive (MPU block) (3), FET drive drive circuit (4) including Bootstrap Gate Driver, LLC Full-bridge Serial Resonator Converter (5), FPCB, PCB, coil, ferrite core is a separate transformer, the signal is synthesized according to the control of the main CPU (MPU block) and transmitted wirelessly to the portable terminal Primary coil 6 for transmission to the secondary coil 7 of the loaded battery pack, inserted into the CL resonator in series when all the functions of the chip are paralyzed, and inserted so that the core can break when overheated Bimetal (8) to secure the device, Dust & Smell Sensor Circuit (9) to detect dust and odor of the contactless charger, and additional anion generating function or bacteria eradication Ionizer High Voltage Drive Circuit Control Block (10) for spraying antibacterial sprays, and the portable terminal with the secondary side wireless charging module is identified in the charging module of the primary coil through load regulation. Current for stable power control by current feedback through primary frequency automatic variable algorithm so that the voltage at the secondary rectifier stage can always be controlled to constant voltage A feedback sensing circuit 11 includes a thermal protection safety block 12 for sensing a temperature of a charging chip, and a secondary side signal feedback circuit 13.

The secondary coil 7 of the battery pack embedded in the portable terminal is connected to a full bridge rectification block 14 of the portable terminal.

 The wireless charge-enabled battery pack of the portable terminal includes an ID and foreign substance detection, a charge state feedback charging circuit on off function, an adapter control block 15 having a signal-to-USB conversion function, and charging Circuitry (Charge Management Block) 16, battery capacity check circuit (Fuel Gauge Control Block) 17, battery protection circuit (Protection Control Block) 18, PTC and battery (19), and USB circuitry embedded in the mobile phone (20a).

(1) Wireless data transfer and charging via USB port of PC

The wireless charger includes a USB driver circuit (2) and a main CPU (MPU) capable of emulating music, video, data, and the like stored from a computer (PC) or a notebook through a USB protocol through a USB connector (1). Use (3) to synthesize the signal to the primary side coil (separate transformer: transformer consisting of FPCB, PCB, Coil, Ferrite core) (6) and transmit it wirelessly. The portable terminal transmits the signal transmitted from the secondary coil of the built-in battery pack (separable transformer: transformer consisting of FPCB, PCB, coil, and ferrite core) (7) through frequency shift keying (FSK). The data is stored in a storage medium (memory) of the portable terminal through a wired USB controller.

When a portable terminal with a built-in secondary wireless charging module is brought close to the wireless charger, the USB is automatically synchronized by the computer main body and the USB is automatically connected, and the storage medium folder of the portable terminal is popped up to play music (MP3 format). , Video (avi, asf, dat format) and data can be downloaded wirelessly.

In addition, irrespective of wireless data communication, an ID is generated through load regulation of a portable terminal with a secondary wireless charging module by using a power source of the USB port of the computer, and the ID is charged by the primary charging module. And control power through the primary side frequency so that the constant voltage control of the secondary side rectifier stage is always constant, and the contactless charger can suppress the temperature rise of the charging chip by minimizing the power consumption. This allows for the use of linear charger ICs without the need for complicated and expensive switching charger ICs, and also frees up space inside the battery pack.

2 is a view showing a contactless charger with a built-in IrDA transceiver module according to the present invention.

Referring to FIG. 2, when the wireless charger is connected to a USB port of a computer or a notebook with a power input, a controller, an IrDA controller, and IrDA for converting a USB communication protocol built into the contactless charger into IrDA Transceivers can wirelessly exchange data with portable terminals (mobile phones, PDAs, PMPs, DMB terminals, MP3s, etc.) by interlocking music, video, data, etc. stored from PCs or laptops. The battery is charged by transferring energy to the portable terminal.

By matching the IrDA port embedded in the contactless charger with the IrDA port of the portable terminal and bringing the portable terminal with the secondary wireless charging module close to the contactless charger, the contactless charger is automatically synchronized with the computer body. Infrared communication is possible for both parties, and USB is automatically connected, and the storage media folder of the portable terminal is popped up to download data such as music (MP3 format) and video (avi, asf, dat format) wirelessly.

The contactless charger generates an ID through a load regulation of a portable terminal with a secondary wireless charging module by using a power source of a USB port of a computer regardless of wireless data communication. Power supply can be implemented through the primary side frequency so that the secondary side rectifier voltage can be controlled at all times, and the power consumption is minimized by minimizing the power consumption. The linear charging IC can be used without using this expensive switching charging IC, and since the linear charging IC uses less space, the internal space of the battery pack is secured.

3 is a block diagram of an IRDA port embedded in a contactless charger, a portable terminal, and a contactless charger for delivering power to an infrared communication method according to another embodiment of the present invention.

Difference between FIG. 1 and FIG. 3 is a method of connecting a primary coil and a secondary coil to a USB port, and FIG. 2 illustrates an IrDA module built in a primary charger and a portable terminal (eg, a mobile phone). Built-in IrDA modules communicate with each other.

That is, FIG. 3 is different from FIG. 1 in that the contactless charger has a difference between the USB-to-IrDA driver circuit 2b and the IrDA circuit 20b embedded in the mobile phone.

As shown in FIG. 3, an IRDA port embedded in a contactless charger and a non-contact charger that transmits power and infrared communication with a portable terminal include a USB connector 1 and a USB-to-IrDA driver circuit. FET drive drive circuit (4), including a USB to IrDA Control Block (2b), main CPU (MPU block) (3), Bootstrap Gate Driver, LLC full bridge serial LLC Full-bridge Serial Resonator Converter (5), Primary Coil (6), Secondary Coil (7), Bimetal (8), Dust & Smell Sensor Circuit ( 9), ionizer high voltage drive circuit control block 10, current sensing block 11, thermal protection safety block 12, and secondary side signal feedback circuit (13).

The secondary coil 7 embedded in the portable terminal is connected to a full bridge rectification block 14 of the portable terminal.

The wireless charge-enabled battery pack of the portable terminal includes an ID and foreign substance detection, a charge state feedback charging circuit on off function, an adapter control block 15 having a signal-to-USB conversion function, and charging Circuitry (Charge Management Block) 16, Battery Capacity Check Circuit (Fuel Gauge Control Block) 17, Battery Protection Circuit (Prototection Control Block) 18, PTC and Battery 19, and IrDA circuitry embedded in a mobile phone (20b).

(2) Foreign material detection function

4 is a view showing an embodiment using a charger, an adapter, a USB port using a 24-pin connector in a contactless charger as an input.

When a heterogeneous metal body is placed on the contactless charger, a phenomenon in which the metal body causes heat loss due to eddy current due to induced electromotive force occurs, resulting in overheating. This phenomenon has been recognized as the problem that most affects the stability of the contactless charger using induction electromotive force. Therefore, coins, metal pens, scissors, and all metal objects in the life must be recognized to cut off the power to provide a safety device from the risk of overheating.

The means for transferring power from the primary core to the secondary core is LC resonant using half-wave or full-wave series / parallel resonant converter to make the current sinusoidal to transfer power to the secondary side by inductive coupling. do. At this time, the switching frequency is set higher than the resonance frequency so that soft switching. A mechanism is used to detect whether foreign matter is raised by applying a PWM pulse for a very short time at a constant interval in the primary core. At no load, the switching frequency and the phase of the current are always 90 degrees. When the foreign matter is close, the phase of the current is changed by the change of the magnetic inductance, and the power is applied by recognizing the degree of the foreign matter according to the level of the phase difference. If the ID signal is not detected by checking the ID for a certain time or a different ID is recognized, it recognizes it as a foreign material and shuts down the contactless charger system to secure stability.

In addition, foreign matter detection during charging requires a complex technology, the power is gradually reduced as it is being charged. The hysteresis is placed on this power curve, and when the foreign matter is raised, the algorithm that recognizes the foreign matter and shuts down when the hysteresis section is crossed is implemented.

The present invention provides a wireless charging solution having a safety and battery condition monitoring function of a battery pack in which the safety device of the contactless charger and a module for wireless charging are incorporated.

The contactless charger basically detects the coil temperature and the driving chip temperature and shuts down when the temperature is always higher than 45 degrees, and incorporates a function to protect against overcurrent and overvoltage in the chip, and also fuses. Built-in circuit breaks overcurrent. In addition, the contactless charger is secured by inserting a bimetal (Bimetal) in series to the C-L resonator unit when all the functions of the chip is paralyzed to break when the core is overheated.

The safety device inside the battery pack has a built-in temperature sensor in the charging circuit so that the NTC connected to the outside changes the resistance value according to the temperature change and feeds back the divided voltage. Doing. In addition, the PCM protection circuit protects the battery from overcurrent, overvoltage, overdischarge, short circuit, and the like, and protects the battery by being blocked by overcurrent and temperature using PTC or Bimetal. If a malfunction occurs inside the battery during charging, the ID chip embedded in the battery pack transmits a signal to the contactless charger through load regulation, and receives a signal through the FSK from the contactless charger to block switching. It has a mechanism to stop the power supply. When the contactless rechargeable battery pack is placed on the contactless charger, the ID chip embedded in the battery pack operates to perform load regulation in a no-load state to transmit a charge start ID to the contactless charger, and the contactless charger receives the signal. The feedback is then checked to see if the IDs match and if so, power is supplied to the battery pack in full power mode. At the same time, antimicrobial sprays for additional anion generation or bacteria eradication are sprayed and an indication is displayed on the LCD display device. When the battery pack is fully charged, the charger receives the full charge signal output from the charging IC from the ID chip and transmits the full charge ID to the contactless charger through load regulation, and the battery pack is fully charged by receiving the feedback. Display via the display device.

(3) Solid-state charger with 24-pin connector that accepts chargers, adapters, and USB ports

When the travel charger is plugged in using a 24-pin standard connector, it always receives 4.2V through pins 21 and 22 through a specific ID resistor assigned to pin 1, and powers through pins 4 and 5 when the adapter is plugged in. When input to, and when plugged into the USB port can receive power through pin 16, the contactless charger is capable of operating at 4V to 5.5V input power.

By using an adapter using the 24-pin standard connector, a docking station configured to simultaneously charge two portable terminals may be configured to connect two contactless chargers to charge two portable terminals at the same time.

It should be emphasized that: 1) In general, non-contact transformers have large air gaps unlike conventional transformers, and thus the magnetization inductance is relatively small compared to the transformer without air gap, and the leakage inductance is relatively large. In this case, there is a disadvantage that a lot of circulating current flows for the load change. In addition, there is a disadvantage in that the switching loss occurs due to the reverse recovery characteristic of the diode by the continuous current of the secondary rectifier diode. In order to solve this problem, the full bridge LLC full bridge series resonant converter (5) for the non-contact transformer is applied so that the switching frequency is operated at a frequency lower than the resonant frequency, thereby reducing the circulating current much more than using the conventional series resonant converter. As a result, discontinuous current flows through the secondary rectifier diode, which reduces the switching loss of the diode.

The primary coil and the secondary coil can be used in a variety of cores of all types, such as round, square.

(4) A method of manufacturing a contactless rechargeable battery pack according to a method of embedding a secondary side core

(A) Hard pack: consisting of secondary core, magnetic shield shield, rectifier circuit, charging circuit (switching or linear charging circuit), wireless communication ID recognition circuit, protection circuit and battery.

5 is a configuration diagram of a contactless rechargeable battery pack (hard pack: all-in-one battery pack) according to a method of embedding a secondary side core.

All-in-one battery pack includes secondary core (including coil or core) 31, rectification block 32, LDO + ID (TX, RX communication) + FET drive + battery charge status input (Empty, Full) Signal) Function + Oscillator + Charge Circuit Adapter Control Block (33), Battery Protection Circuit (PCM) (34), PTC and Battery Block (35), Charging Circuit 36, a terminal 37 connected with the mobile phone.

(B) Internal battery pack

The portable terminal includes a secondary core and a magnetic shielding shield in a case cover (using a method of ultrasonically fusion by core injection molding or a protective case on the cover), and a terminal which can be connected to the portable terminal and connected through the terminal. A rectifier circuit and a wireless ID recognition circuit are added to the built-in circuit of the portable terminal, and the DC / DC converter and the charging circuit built in the portable terminal are used as it is to charge through a terminal connected to the built-in battery pack.

The battery pack included in the portable terminal includes a secondary core, a magnetic shielding shield, a rectifier circuit, a wireless communication ID recognition circuit, a protection circuit, and a battery, and the portable terminal and rectifier circuit output, ground, battery positive electrode, and charging state. Make a connection terminal such as a pin and charge it through the terminal connected to the battery using the DC / DC converter and the charging circuit built in the portable terminal as it is.

As shown in FIG. 6, the semi-inner pack for contactless charging applicable to a mobile phone includes a secondary side core (including coil or core type) 41, a rectification block 42, and an LDO + ID (TX). + FET drive + battery charge status input (Empty, Full signal) function + oscillator + charger circuit Adapter control block (43) with built-in port to enable or disable, battery protection circuit ( PCM) 44, PTC and battery block 45, a DC / DC converter 46 embedded in the GSM mobile phone, and a charging circuit 47 embedded in the GSM mobile phone.

Here, the term "mobile phone" refers to a mobile phone (eg, GSM mobile phone) in which a DC / DC converter and a charging circuit are embedded in the mobile phone.

When a GSM mobile phone with a semi-inner pack for contactless charging is placed on a contactless charger, the contactless charger generates power to transfer power to the secondary battery.

The secondary battery receives AC power from the secondary core 41 and rectifies the rectifier circuit 42 to DC. When the voltage is higher than 5.5V through the RXD pin in the adapter control block 43, the TXD pin is disconnected. Through generating a power save code to reduce the power to the contactless charger through, and adjusts the parameters (frequency) to the secondary side power is about 5V. This case is repeated to generate an ID when the secondary side reaches an optimum voltage condition (5V), and generate power in the contactless charger when it matches the ID of the contactless charger. Otherwise, it shuts off power and enters power saving mode or raises an error because it does not generate an ID when a foreign object is raised.

FIG. 7 is an assembly view (circuit board top surface arrangement) of a built-in battery pack for contactless charging according to a first embodiment.

The built-in battery pack for contactless charging according to the first embodiment includes an A / S label 111, a top case 112, a contactless charging PCB board 113, (-) Ni-Plate ( 114), PTC or bimetal 115, lead wire 116, (+) Ni-Plate 117, auxiliary case 118, Nomax tape 119, rectifier board 120, cell 121, secondary side A coil 122, a bottom case 123, and a label 124.

FIG. 8 is an assembly view (circuit board top surface arrangement) of a built-in battery pack for contactless charging according to a second embodiment.

The built-in battery pack for contactless charging according to the second embodiment includes an A / S label 211, a top case 212, a contactless charging PCB board 213, (-) Ni-Plate ( 214), PTC or bimetal 215, lead wire 216, (+) Ni-Plate 217, auxiliary case (can be filled by hot melt) 218, Nomax tape 219, connection board ( 220 '), a cell 221, a secondary coil 222, a bottom case 223, and a label 224.

9 is an assembly view (circuit board side surface arrangement) of a built-in battery pack for contactless charging according to a third embodiment.

The built-in battery pack for contactless charging according to the third embodiment may include an A / S label, a top case 312, a contactless charging PCB board 313, (−) Ni-Plate 314, PTC or bimetal 315, lead wire 316, (+) Ni-Plate 317, auxiliary case (can be filled by hot melt) 318, Nomax tape 319, connection board 320, A cell 321, a secondary side coil 322, a bottom case 323, and a label 324 are provided.

10 is a configuration diagram of a battery pack having a wireless power receiving module.

Battery packs made of coil, fine metal, thin film aluminum (foil, etc.), lithium ion or lithium polymer can be charged and discharged up to 500 cycles by inserting thin film aluminum to block 100% of the magnetic field so that the cell is not affected. . Here, the shape of the coil includes all types of coils.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below Or it may be modified.

As described above, the contactless charger capable of wireless data communication and power transmission and the portable terminal using the same according to the present invention, the contactless power transmission using induction electromotive force using the output of the USB port of TC, TA, PC as a power input This enables wireless data communication and wireless charging between portable terminals (mobile phones, PDAs, MP3 players, DAB or DMB terminals, portable music players, handheld terminals, etc.) and computers (PCs) at the same time.

In addition, the contactless charger according to the present invention has a foreign material detection function that can detect and block when other metal foreign matter other than the battery pack (pack with a built-in secondary wireless charging module) of the portable terminal to be charged; In addition, it has an identification function for recognizing a battery pack of a portable terminal to recognize a charging state, and has an effect of providing an overload and a temperature protection function.

Claims (25)

In the contactless charging system comprising a contactless charger capable of wireless data communication and power transmission, comprising a portable terminal capable of wireless data communication and power transmission, The wireless charger may include a USB connector for connecting to a USB port of a computer and a notebook; A USB driver circuit connected to the computer, the notebook and the USB connector, and configured to receive music, video, and data and to emulate the USB protocol; A main CPU (MPU block) for controlling internal elements of the contactless charger; A FET drive drive circuit including a bootstrap gate driver; LLC Full-bridge Serial Resonator Converter; FPCB, PCB, coil, ferrite core is included as a separate transformer, the signal is synthesized by wireless transmission under the control of the main CPU (MPU block) and transmitted to the secondary coil of the battery pack built in the portable terminal A primary coil for making; When the function of the chip inside the contactless charger is paralyzed, the bi-metal is inserted in series with the C-L resonator, and is provided to be disconnected when the primary coil is overheated; A dust and odor detection sensor for detecting dust and odor of the contactless charger; An ion generating device for spraying antibacterial spray for generating negative ions and eradicating bacteria; The ID of the battery pack is recognized by the charging module of the primary coil through a secondary wireless charging module and load modulation embedded in the battery pack of the portable terminal, and the voltage of the secondary rectifying stage of the battery pack is determined. A current feedback circuit for stable power control by current feedback through a primary frequency automatic variable algorithm so as to control at a constant voltage at all times; A temperature sensing circuit for sensing the temperature of the charging chip; And And a secondary side signal feedback circuit for feeding back a signal of a secondary side coil of the battery pack. delete The method of claim 1, The battery pack, ID and debris detection, charging status feedback charging circuit on off function, adapter control block with signal-to-USB conversion, charge management block, battery gauge check circuit, A solid state charging system, comprising a protection circuit, a PTC, a battery, and a USB circuit embedded in a mobile phone. delete delete The method of claim 1, The contactless charger, When the music, video, and data stored in the computer (PC) and the notebook are synthesized and wirelessly transmitted to the primary coil using the USB connector, the USB driver circuit, and the main CPU (MPU block), the Separating the signal transmitted from the secondary coil of the battery pack built in the portable terminal through the frequency shift method (FSK), and stores the data of the received signal to the storage medium of the portable terminal via a wired USB controller Is equipped to The primary side coil is provided as a separate transformer consisting of any one of FPCB, PCB, Coil, Ferrite core, The secondary side coil is a contactless charging system, characterized in that provided as a separate transformer consisting of any one of FPCB, PCB, Coil, Ferrite core. delete delete The method of claim 1, The contactless charger provides a foreign substance detection function that detects a metallic foreign substance when a metallic foreign substance other than a battery pack (pack containing a secondary side wireless charging module) of the portable terminal to be charged is placed thereon. Contact charging system. delete delete delete The method of claim 1, The contactless charger is provided to shut down when the temperature of the coil and the driving chip is detected and the constant temperature is 45 degrees or more, and includes a protection function for overcurrent and overvoltage in the chip, and fuses. Solid-state charging system, characterized in that provided with a built-in to cut off the overcurrent. The method of claim 1, The safety device inside the battery pack is provided with a temperature sensor embedded in the charging circuit, and the NTC connected to the outside receives the divided voltage by changing the resistance value according to the temperature change, and stops charging when the temperature exceeds the preset temperature. Solid-state charging system with built-in function, protects the battery from overcurrent, overvoltage, overdischarge and short circuit by PCM protection circuit, and protects the battery by being blocked by overcurrent and temperature using PTC or bimetal . The method of claim 1, The battery pack transmits a signal to the contactless charger through load regulation when a malfunction occurs inside the battery while charging the built-in ID chip, and the contactless charger receives a signal from the battery pack through an FSK to perform switching. Contactless charging system, characterized in that the interruption to stop the power supply. delete The method of claim 1, When the battery pack is fully charged, it receives the full charge signal output from the charging IC from the ID chip and transmits the full charge ID to the contactless charger through load regulation. And the contactless charger is provided to receive a signal from the battery pack and to display on the LCD display that the battery pack is fully charged. delete The method of claim 1, The primary side coil and the secondary side coil is a contactless charging system, characterized in that provided as a core of a circular or square shape. The method of claim 1, The battery pack may include an A / S label, a top case, a non-contact charging PCB board, (-) Ni-Plate, PTC or bimetal, lead wire, (+) Ni-Plate, an auxiliary case, Nomax tape, A solid-state charging system comprising a rectifier board, a cell, a secondary coil, a bottom case, and a label. delete delete delete In the contactless charging system comprising a contactless charger capable of wireless data communication and power transmission, comprising a portable terminal capable of wireless data communication and power transmission, The contactless charger may include a USB connector for connecting to a USB port of a computer and a notebook; A USB-to-IrDA driver circuit connected to the computer, the notebook and the USB connector and configured to receive music, video, and data and to emulate the USB-to-IrDA protocol; A main CPU (MPU block) for controlling internal elements of the wireless charger; A FET drive drive circuit including a bootstrap gate driver; LLC Full-bridge Serial Resonator Converter; It is equipped with a separate transformer composed of FPCB, PCB, coil, and ferrite core, and synthesizes the signal under the control of the main CPU (MPU block) and transmits it wirelessly to transmit to the secondary coil of the battery pack built in the portable terminal. Primary coil; When the function of the chip inside the contactless charger is paralyzed, the bi-metal is inserted in series with the C-L resonator, and is provided to be disconnected when the primary coil is overheated; A dust and odor detection sensor for detecting dust and odor of the contactless charger; An ion generating device for spraying antibacterial spray for generating negative ions and eradicating bacteria; The ID of the battery pack is recognized by the charging module of the primary coil through a secondary wireless charging module and load modulation embedded in the battery pack of the portable terminal, and the voltage of the secondary rectifying stage of the battery pack is determined. A current feedback circuit for stable power control by current feedback through a primary frequency automatic variable algorithm so as to control at a constant voltage at all times; A temperature sensing circuit for sensing the temperature of the charging chip; And And a secondary side signal feedback circuit for feeding back a signal of a secondary side coil of the battery pack. delete

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