KR20100067749A - Non-contact multi-charging station of wireless power transmision with double pt-pcb core layer having plural planar spiral core structure - Google Patents

Abstract

PURPOSE: A multi contactless charging station having power trans PCB(Printed Circuit Board) of planar spiral core structure by double is provided to form primary core to power trans PCB of thin thickness, thereby improving transmission efficiency. CONSTITUTION: A control unit performs power transmission and data transmission and reception. A station unit comprises the first core unit(31) generating inductive magnetic field. The first core unit comprises a conductive pattern core(33). The conductive pattern core comprises a bottom core layer(331). A core layer(332) is located in the upper side of the bottom core layer.

Description

CONDACT MULTI-CHARGING STATION OF WIRELESS POWER TRANSMISION WITH DOUBLE PT-PCB CORE LAYER HAVING PLURAL PLANAR SPIRAL CORE STRUCTURE}

The present invention relates to a multi-contact charging station, and more particularly, a power transformer in which a primary side core of a multi-contact charging station for transmitting a power signal by using an induction magnetic field to a portable device has a flat core spiral core structure on a PCB base. The present invention relates to a multi-contact charging station having multiple layers of a power transmission PC core having a planar spiral core structure, which has a simple shape and is easy to be mounted on a contactless charger to improve applicability.

In general, mobile devices such as mobile phones, PDAs, PMPs, DMB terminals, MP3s, and laptops are used while moving, so they cannot be powered by directly plugging in general home power. will be.

However, the charger for charging the battery of the portable device is a terminal supply method is used to supply power to the battery pack through a power supply line and a power supply terminal to receive electricity from the general power source. However, when the power is supplied by the terminal supply method, when the charger and the battery are coupled or separated from each other, the terminals on both sides have different potentials, and thus a momentary discharge phenomenon occurs in the terminal portion. As a result, foreign materials gradually accumulate on both terminals, which may cause a fire. In addition, the terminal is directly exposed to the air, such as moisture or dust may be naturally discharged, there is a problem that decreases the life and performance of the charger and battery.

In order to solve the problem of the terminal supply method, a contactless charger has been developed. Such a contactless charger according to the prior art is located on top of the primary coil of the contactless charger, the terminal is embedded with the battery to be charged, it is charged by the secondary coil of the battery. That is, induced electromotive force is generated in the secondary coil by the magnetic field generated by the primary coil, thereby charging the induced electricity.

However, these conventional contactless chargers only supply power to the portable terminal, and other uses are limited, thereby limiting practicality.

In addition, if a metal is placed on the magnetic field generated from the primary coil, there is a problem that the contactless charger may be damaged due to a considerable power loss due to the change of the magnetic field. In addition, if an overcurrent flows in the secondary side coil and the battery pack circuit, a heat generation phenomenon may occur and eventually an explosion accident due to the overheating of the battery pack may occur.

Furthermore, in the conventional solid-state charger, since the Litzcore is made by twisting several strands of wires, the size of the entire charger is increased, which increases the size of the charger and also makes it complicated in structure and difficult to manufacture. In addition, it is difficult to form in various forms, there is a limit to use.

The present invention for solving the above problems is provided with a power transmission PC core that the primary side core of the multi-contact point charging station for transmitting a power signal by using an induction magnetic field to a portable device in a flat core spiral core structure Because of the simplicity of the form is easy to install in a contactless charger is intended to improve the applicability.

In addition, since it is not a ritz core but a thin thickness of the power transmission PC core, it is provided not only in a single layer but also in multiple layers, so that the charging operation is always performed even when the portable device is moved to any position so that it can be stably charged.

In particular, since the primary side core is formed by a plurality of thin power transformer BC cores, the power transmission efficiency is made stable through the power transmission control algorithm when the portable device is moved from one core to another core. The purpose is to make this improvement.

In addition, the purpose of the battery pack or the portable device placed on the charging station to be charged stably even if the movement.

Multi-contact charging station equipped with a multi-layered power transformer PC core of the planar spiral core structure according to the present invention for achieving the above object, induction for charging power and data transmission to the contactless power receiving device 50 side In the multi-contact charging station 10 for transmitting a magnetic field, the contactless charging station 10 is a control unit 11 for power transmission and data transmission and reception therein, and electrically connected to the control unit 11 Connected to the induction magnetic field is transmitted and includes a station portion 30 is placed on top of the contactless power receiving device 50, the station portion 30 is the primary side core portion for transmitting the induction magnetic field (31) is provided, and the primary side core portion (31) is provided with an inductive pattern core (33) on the PC base (32), and the PC base (32) is provided to be fastened to the station unit (30). In addition, the induction pattern core 33 is a plane characterized in that it is provided with a power transmission-PCB core (PT-PCB Core) having a planar spiral core structure (PSCS, Planar Spiral Core Structure) It is provided with a power transmission PC core of the spiral core structure, the induction pattern core 33 of the primary side core portion 31 is provided with a bottom core layer 331 formed of a plurality of cores on the base of the PC base 32 In addition, an upper core layer 332 including a plurality of cores is provided on the gap panel 321 above the lower core layer 331, and the lower core layer 331 and the upper core layer 332 cross each other. Characterized in that the position is provided.

Accordingly, the induction pattern core 33 of the primary side core portion 31 has a circular core structure in the form of a flat circular spiral core, an elliptical core structure in the form of a flat elliptical spiral core, and a triangular core structure in the form of a flat triangular spiral core. Any one of the following: a rectangular core structure in the form of a flat spiral spiral core, a pentagonal core structure in the form of a flat pentagonal spiral core, a hexagonal core structure in the form of a flat hexagonal spiral core, and a polygonal core structure in the form of a flat polygonal spiral core It may be provided in a spiral core structure.

The primary side core part 31 is provided with a shielding part 34 below the induction pattern core 33, and the shielding part 34 includes a shielding panel part 341, a shielding mesh part 342, It may be formed as a metal thin film portion 343.

In addition, a power supply unit 13 for supplying power; A resonant converter 14 for supplying the power of the power supply unit 13 to the bottom core layer 331 and the upper core layer 332 of the primary side core part 31; A predriver 15 for transmitting an oscillation signal to the resonant converter 14 under control of a control unit 10; A control unit 11 for controlling the resonance converter 14 to be operated; A station memory unit 12 in which data is stored; An ID signal detection unit 19 connected to the bottom core layer 331 and the top core layer 332 of the primary side core part 31 for discriminating a signal transmitted from the contactless power receiver 50 is included. The resonance converter 14 includes a bottom resonance converter 141 which transmits a power signal to a plurality of cores of an A block provided with the bottom core layer 331, and the upper core layer An upper resonant converter 142 for transmitting a power signal to a plurality of cores of a non-block (B block) provided with a 332 is provided, and the predriver 15 receives a control signal of the control unit 11. A bottom pre-driver 151 for transmitting a signal to the bottom resonant converter 141 and a top pre-driver 152 for transmitting a signal to the top resonant converter 142 are provided, and the bottom resonant converter ( A plurality of cores of the bottom core layer 331 is connected to 141 A plurality of bottom switching units 211 for separately applying a power signal are provided, and a plurality of bottom switching units 211 are connected to the upper resonance converter 142 to individually apply a power signal to a plurality of cores of the upper core layer 332. An upper switching unit 212 may be provided, and a state control block 22 for switching the lower switching unit 211 and the upper switching unit 212 under the control of the control unit 11 may be provided. have.

Furthermore, a control method of a multi-contact charging station having a planar spiral core structure power transmission PC core having a multilayer structure,

A standby step (S01) of requesting a unique ID signal to the contactless power receiver 50 through a plurality of cores of the primary side core unit 31 under the control of the control unit 11;

An ID signal detection step (S02) of transmitting a unique ID signal from the contactless power receiving device (50) through the individual cores in the standby step to perform signal processing on the ID signal detection unit (19);

The signal detected by the ID signal detection unit 19 is transmitted to the control unit 11, and it is determined whether the detected signal is a signal detected from a plurality of cores of the lower core layer 331 and the upper core layer 332. Position discrimination step (S03) to be;

A switching control signal transmission step (S04) of transmitting a switching signal to a state control block (22) to cause the switching operation to the corresponding core side determined by the position discriminating step (S03);

In addition to the switching control signal transmission step (S04), the power transmission control signal is transmitted to the predriver 15 side, so that power is applied to the plurality of bottom switch parts 211 and upper switch parts 212 from the resonant converter 14. In this case, the contactless power transmission step (S05) for receiving an electric power from the corresponding switched on the core to be transmitted is characterized in that it is provided.

The present invention provided as described above has a form because the primary side core of the multi-contact point charging station for transmitting a power signal by using an induction magnetic field to a portable device is provided with a power transmission PC core having a plain-man helical core structure on the PC base Simple and easy to install in a contactless charger has an excellent effect to improve the applicability.

In addition, since it is not a litz core but a thin thickness of the power transmission PC core, it is provided not only as a single layer but also as a plurality of layers, so that the charging operation is always performed regardless of the location where the portable device is moved to have a stable charging.

In particular, since the primary side core is formed by using a plurality of thin power transformer PC cores, when the portable device is moved from one core to another core, the power transmission control algorithm makes the power transmission stable through the power transmission control algorithm. There is an excellent effect of improving the rate.

In addition, there is an advantage that the battery pack or the portable device placed on the charging station to be charged stably even if the swinging.

Hereinafter, described in detail with reference to the accompanying drawings.

1 is a control configuration diagram for a multi-contact charging station according to the present invention, Figure 2 is a schematic layer configuration example of the primary side core portion of a multi-contact charging station according to the present invention, Figure 3 4 is a schematic illustration of a station part of a multi-contact charging station according to the present invention. FIG. 4 is an exemplary photograph of an individual core of a multi-contact charging station according to the present invention. It is shown to be provided in the core arrangement of.

5 is a power transmission control configuration diagram of a multi-contact power charging station according to the present invention, Figure 6 is a power transmission control flow chart for a multi-contact power charging station according to the present invention, Figures 7 and 8 according to the present invention 9 and 10 are flow charts for power transmission control for a multi-contact power charging station, and an efficiency graph according to power transmission for a multi-contact power charging station according to the present invention, and FIG. 11 is a contactless power charging according to the present invention. Examples of the state where the contactless power receiver is located in the station are shown respectively.

That is, the multi-contactless charging station 10 having a planar spiral core structure power transmission PC core having multiple layers according to the present invention is to supply power to the portable device M, as shown in FIGS. 1 to 11. It is a device for transmitting power to the contactless power receiver 50 that may be provided as a battery pack. In particular, with respect to the induction magnetic field transmitted from the multi-contact charging station 10, the secondary side core part 51 of the contactless power receiving device 50 is provided to receive the power signal by the induction magnetic field to charge the power. .

Looking at the detailed configuration of the multi-contact charging station 10 provided as follows. That is, as shown in Figure 1, the multi-contact charging station 10 is connected to the control unit 11 and the control unit 11 for the power transmission and data transmission therein, so that the induction magnetic field is transmitted The station portion 30 is provided with the contactless power receiving device 50 is placed on the upper side, the station portion 30 is provided with a primary side core portion 31 for transmitting an induction magnetic field.

In addition, a power supply 13 for supplying power to supply power to each member of the multi-contact charging station 10 and to transmit an induction magnetic field from the primary side core part 31 is provided.

And the control of the resonant converter 14, the control unit 10 for supplying the power of the power supply unit 13 to the lower core layer 331, the upper core layer 332 side of the primary side core portion 31 By the pre-driver 15 for transmitting the oscillation signal to the resonant converter 14 is provided together, it is operated by the control of the control unit 11 for controlling the resonant converter 14 is operated. . Data for such processing is stored in the station memory unit 12 in which data is stored.

In addition, an ID signal detection unit 19 is connected to the primary side core unit 31 to process a signal transmitted from the contactless power receiver 50 and transmit the signal to the control unit 11.

And the contactless charging case (not shown) of the multi-contact charging station 10 is provided with a power on / off switch, an input panel for signal input forward, the contactless charging plate and the contactless power reception A display unit 101 such as an LCD panel and a state LED for displaying the state of charge in the device 50 may be provided.

Thus, the charging plate of the contactless power transmission device 10 is a portable battery (M) such as a mobile phone, PDA, PMP, DMB terminal, MP3, UMPC or laptop or a battery pack that can be attached to or detached from the portable device. The contactless power receiving device 50, which may be provided as a semi-inner pack) may be placed, and the contactless power receiving device 50 may be placed therein. 10 is to detect this and to operate the charging.

The power of the power supply unit 13 of the multi-contact charging station 10 may be supplied with power input from the power of the USB port of the computer C, an AC adapter, a Cigar Jack, and the like.

In addition, the charging process is provided with a temperature detector 18 for detecting the temperature of the multi-contact charging station 10, when the overheat according to the temperature detected by the temperature detector 18, the charging operation can be stopped, multi In the case where the contactless charging station 10 is overheated as a whole, the operation of the entire system may be configured to be suspended.

Furthermore, a current sensing member such as a current detector 17 or the like is connected to the power supply unit 13, the predriver 15, the resonant converter 14, or the ID signal detector 19 to monitor the flow of current. The current sensing member may be configured to stop the charging operation or stop the operation of the system when the members are in an overcurrent or overvoltage state, and transmit a signal thereto. Of course, it may be provided to detect a signal transmitted from the contactless power receiver 50 through the current detector 17.

Since the induction magnetic field is transmitted from the multi-contact charging station 10 provided as described above, induction power is generated due to the induction magnetic field to charge it, and the contactless power receiving device 50 for supplying power to the portable device. Looking at the detailed configuration according to an embodiment for the following.

That is, in the contactless power receiving device 50 that receives the induction magnetic field transmitted from the multi-contact charging station 10 as shown in FIG. 1, an induced current is generated in the secondary side core part 51. Power by is charged in the battery cell 53. The generated power signal is rectified and charged, and detects the strength of the received power in the battery pack control unit 54 and transmits a signal for the sensed data to the multi-contact charging station 10, the multi-contact charging station It is to be provided to adjust the induction magnetic field transmitted from (10). In addition, the charging power is controlled to allow stable charging, while stably supplying power to portable devices (M) such as mobile phones, PDAs, PMPs, DMB terminals, MP3s, and laptops. In particular, such a contactless power receiving device 50 may be provided separately from the portable devices, such as a semi-battery pack with a battery pack or cover to be mounted on or detachable from the portable devices. It may also be mounted in the case of the portable devices, it may be provided integrally to be directly connected to the power supply of the portable devices (M).

The contactless power receiver 50 for this purpose is provided with a rectifier block 52 (Rectifier block) connected to the secondary side core portion 51 to rectify the induced current, by the secondary side core portion 51 The battery pack controller 54 is configured to process the data transmitted and received.

In addition, a charging circuit block block 55 (Charger Management Block) is provided to allow the power supplied from the rectifier block 52 to be charged in the battery cell 53 under the control of the battery pack controller 54. Charge monitoring circuit block 56 for monitoring the charging degree of the 53 and transmits a full charge or discharge state signal to the battery pack control unit 54 is provided.

Therefore, the battery pack control unit 54 (Power receiver controller) in the rectifier block 52 (Rectification Block), the charging circuit block 55, the charging monitoring circuit block 56 (Protection Control Block), gauge block 57 (Fuel) It controls the members of the contactless power receiving device 50, such as a Gauge Control Block, etc., to transmit the ID data signal to the multi-contact charging station 10 side and to monitor the state of charge.

A protection circuit module block (PCM) is provided between the charging circuit block block 55 and the battery cell 53 to detect a current charged in the battery cell 53 to detect the battery cell. The charging state information of the 53 is transmitted to the battery pack controller 54 to detect an overvoltage, an undervoltage, an overcurrent, a short circuit, and the like of the battery.

In addition, the contactless power receiving apparatus 50 monitors the power received through the secondary side core unit 51, determines the voltage level of the received power, and determines whether the reception is stable. The reference voltage of the received power may be variously selected according to options of the contactless power receiver 50, and may be generally set to about 2 to 20V, and in particular, when applied to a general portable device. It can be set around 5V.

In this way, it is determined whether the voltage of the received power is sensed as a low voltage and whether the voltage of the received power is sensed as a high voltage. For example, when 5V is used as a reference example for the reference voltage, the low voltage detection may be generally determined as a case where -1.5V to -0.5V is sensed to a reduced pressure level than 5V. In addition, the degree of the voltage that is the reference of the high voltage may be determined as the case where the voltage of + 1.5V to + 0.5V is sensed to be increased to about 5V.

When the power signal is received at a voltage lower or higher than the reduced or boosted reference value, the battery pack controller 54 multiplies the transmission signal for the degree of voltage correction with the unique ID data signal of the contactless power receiver 50. It will be sent to the contact charging station 10 side.

The multi-contact point charging station 10 for transmitting an induction magnetic field for power transmission to the contactless power receiving device 50 provided as described above is provided with a primary side core part 31 for efficient power transmission. will be.

That is, the primary side core part 31 is provided with the induction pattern core 33 in the PC base 32, so that the PC base 32 is fastened to the station unit 30.

In addition, the induction pattern core 33 is provided with a power transmission-printed circuit board core (PT-PCB Core) having a planar spiral core structure (PSCS). In other words, the power transformer PC core is formed of a planar spiral core made of the same material in a single layer or a plurality of layers in the PC (CCL, PCL including flexible copper clad laminated).

In particular, the induction pattern core 33 of the primary side core part 31 has a circular core structure in the form of a flat circular spiral core, an oval core structure in the form of a flat oval spiral core, a triangular core in the form of a flat triangular spiral core Structure, a rectangular core structure in the form of a flat spiral spiral core, a pentagonal core structure in the form of a flat pentagonal spiral core, a hexagonal core structure in the form of a flat hexagonal spiral core, or a polygonal core structure in the form of a flat polygonal spiral core It can be provided with a planar spiral core structure. Thus, as in the prior art, the Ritz core made a core by twisting a plurality of thin wires, which requires a lot of work processes, as well as a large amount of wires. However, since the induction pattern core 33 of the primary side core portion 31 is formed using a planar spiral core structure that is a power transmission PC core as in the present invention, the manufacturing process is performed on the PC base 32. In addition to being simple and easy to manufacture, there is an advantage such that the manufactured primary side core part 31 can be easily installed in the station part 30.

As described above, the induction pattern core 33, which is a power transmission PC core made of various types of planar spiral core structures, may have a single layer planar spiral core structure on the PCB base 32. . In addition, as shown in FIG. 2, the induction pattern core 33 may be provided to have a plurality of planar core layer structures, such as a multilayer structure having a bottom core layer 331 together with the upper core layer 332 on the upper side. will be. Therefore, when provided as a charging station for application to a small portable device may have a single layer planar core structure. On the other hand, in order to charge a large portable device that requires a lot of power or to charge a plurality of portable devices by placing them in one station unit 30 as shown in FIG. It may be provided so that the reception rate is better.

Accordingly, the induction pattern core 33 of the primary side core part 31 is made of a copper material of a spiral shape in a plane.

In addition, the primary side core portion 31 is made of a copper material on the PCB base 32, the induction pattern core 33 is formed in a planar spiral shape, the PS coating layer (PSR) on the induction pattern core 33 Coating Layer) may be formed and provided.

As such, when the PAL coating layer is formed, the induction pattern core 33 of the primary side core part 31 made of copper material is prevented from being damaged, so that the induction magnetic field transmission is good.

In another embodiment, the induction pattern core 33 is made of a copper material, and has a planar spiral shape. Thus, an electroless gold plating layer (EGPL) may be formed on the induction pattern core 33. will be.

When the electroless plating layer is formed as described above, not only the induction pattern core 33 of the primary core part 31 made of copper is damaged, but the efficiency of the induction magnetic field transmitted to the secondary battery pack side is improved. There is an advantage that the overall power transmission efficiency is good.

Furthermore, the primary side core part 31 may be provided with a shielding part 35 (HPES: Hanrim Postech Electromagnetic shield) below the induction pattern core 33.

In particular, the shielding part 35 (HPES: Hanrim Postech Electromagnetic Shield) may be formed of a shielding panel part 351, a shielding mesh part 352, and a metal thin film part 353.

In this case, the shielding panel 351 may include 25 to 55 parts by weight of polyurethane based on 55 to 75 parts by weight of Sendust.

Such a dust (sendust) is composed of aluminum, silicon, iron, etc., and corresponds to a high permeability alloy. This shielding performance is excellent in composition with Sendust and polyurethane together with a transmission shielding panel. Therefore, if the sendust is 55 parts by weight or less, the shielding performance may be lowered. On the other hand, when 75 parts by weight or more, the performance is not improved compared to the amount administered.

As such, the magnetic field may be effectively shielded by the shielding panel unit 351 including the sender while forming the panel.

In addition, the shielding mesh unit 352 is a member for reducing the eddy current for the induced electromotive force generated by the induction magnetic field. The shielding mesh unit 352 is formed by plating a low eddy current reducing composition on a polyester formed in a mesh shape. It may be provided consisting of 35 to 45 parts by weight of zinc with respect to ~ 65 parts by weight, and may be made of a metal mesh of about 100 mesh to 200 mesh in a metal mesh shape, more preferably 135 mesh. Thus, the eddy current that may be generated in the multi-contact charging station 10 may be provided to be extinguished by the shielding mesh unit 352 which is an eddy current reducing member.

Furthermore, the metal thin film portion 353 is formed of an aluminum thin film, and is finally provided at the bottom of the shield 35 (HPES: Hanrim Postech Electro-magnetic shield) to finally block the magnetic field so as not to affect the circuit.

The multi-contact point charging station 10 according to the present invention provided as described above, the bottom core layer 331, a plurality of primary cores 31 of the station unit 30 is a plurality of individual cores are arranged It may be provided as an upper core layer 332 is formed of an individual core. That is, the individual cores are made of a power transmission PC core having a planar spiral core structure as in the above-described embodiment, and are made of a core of copper material on a PCB substrate, and thus have various shapes. It may be made of various types of arrangement, such as arrangement, circular arrangement. Horizontal Arrangement-In the case of vertical arrangement or right angle arrangement, the core structure may be formed in the form of a rectangle, a circle, or the like. In the case of the arrangement arranged in a diagonal direction as shown in FIG. It would be desirable to form. Therefore, the individual core made of the core of the copper material in the upper portion of the PCB may be as shown in FIG.

In addition, the individual cores of the upper core layer and the individual cores of the bottom core layer are provided so as to be positioned at positions overlapping with each other on the plan view. Thus, for example, when the contactless power receiver 50 moves in the individual core of one upper core layer, the secondary side core portion of the contactless power receiver 50 in the individual core of the overlapping bottom core layer ( 51), the power signal may be continuously received through the core of the bottom core layer, while the core of the upper core layer, which has been receiving the power signal, may stop the power transmission.

In addition, the primary side core portion 31 of the multi-contact charging station 10 of the present invention is provided with a plurality of layers consisting of a bottom core layer 331 and an upper core layer 332, but such a bottom core layer The spacer 321 may be provided between the 331 and the upper core layer 332.

In addition, the ID signal detection unit 19 connected to the primary core unit 31 includes individual cores (cores in the A Block region in FIG. 5) and the upper core of the bottom core layer 331 of the primary core unit 31. It may be provided to receive a signal from the contactless power receiver 50 in a state in which the respective cores (cores in the B Block region in FIG. 5) of the layer 332 are respectively connected.

Accordingly, in FIG. 3 and FIG. 5, A block corresponds to the configuration area for the bottom core layer 331 and B block corresponds to the configuration area for the top core layer 332.

In addition, the resonant converter 14 includes a bottom resonant converter 141 for transmitting a power signal to a plurality of cores of an A block provided with the bottom core layer 331, and the upper core layer ( An upper resonant converter 142 for transmitting a power signal to a plurality of cores of a non-block (B block) provided with 332 is provided.

In addition, the predriver 15 receives a control signal from the control unit 11 and transmits a signal to the bottom resonant converter 141 and a signal to the top resonant converter 142. An upper free driver 152 for transmitting the same is provided.

Along with the bottom resonant converter 141 is provided a plurality of bottom switching unit 211 for applying a power signal to a plurality of cores of the bottom core layer 331, the top resonant converter ( A plurality of upper switching units 212 connected to the 142 to separately apply a power signal to a plurality of cores of the upper core layer 332 is provided.

In addition, a state control block 22 (Solid State Relay Controller) for switching the bottom switching unit 211 and the upper switching unit 212 under the control of the control unit 11 is provided, the individual bottom switching Induction magnetic fields are transmitted from individual cores connected to individual switches operated by the unit 211 and the upper switching unit 212.

Thus, the control unit 11 transmits a signal for detecting the contactless power receiver 50 through the individual cores such as the bottom core layer 331, the top core layer 332, and the ID signal detector 19 ( ID Checking Logic) receives signals detected from individual cores in the lower core layer 331 and the upper core layer 332 and transmits them to the control unit 11. Accordingly, the control unit 11 (Wireless Power Transfer Controller) side determines which of the cores of the lower core layer 331 and the individual cores of the upper core layer 332 is the most stable signal transmitted and received. Since the signal transmission and reception to the stable core to transmit the power signal is controlled to operate the switch unit connected to the core.

Thus, the control signal is transmitted to the station control block 22. Of course, together with the bottom pre-driver 151 of the pre-driver 15 (Pre-driver) and the bottom pre-driver 141 of the upper pre-driver 152 and the resonant converter 14 (Series Full Bridge Resonant Converter) The control signal is transmitted to transmit the power signal to the upper resonant converter 142, and thus an induction magnetic field for power signal transmission is transmitted from the respective core in which the corresponding switch unit is operated.

Looking at the control flowchart of the multi-contact charging station 10 according to the present invention provided as described above are as follows. That is, as shown in FIG. 6, a standby step S01 for requesting a unique ID signal to the contactless power receiver 50 through a plurality of cores of the primary core 31 under the control of the control unit 11. Will be performed. In the standby step S01, a plurality of individual cores, such as the bottom core layer 331 and the top core layer 332, are used by using the predriver 15, the resonant converter 14, and the state control block 22. The detection signal is sequentially transmitted. Accordingly, signals transmitted from the contactless power receiver 50 are sequentially transmitted to the respective cores of the bottom core layer 331 and the upper core layer 332 together with the respective unique ID signals of the contactless power receiver 50. The unique ID signal is received together, and the signal received through the core and ID signal detection unit 19 corresponding to the unique ID of the respective core is transmitted to the control unit 11. The contactless power receiver 50 detects the sensitivity of the signal transmitted from the multi-contact charging station 10 (eg, the intensity of the induced current and the voltage, etc.) in the standby step S01. The signal for sensitivity is transmitted to the contact charging station 10 together with the unique ID signal of the corresponding core and the unique ID signal of the contactless power receiver 50.

In this standby mode (S01), the unique ID signal is transmitted and detected from the contactless power receiver 50, the ID signal detection step (S02) for signal processing in the ID signal detection unit 19 is performed. .

The signal detected by the ID signal detection unit 19 is transmitted to the control unit 11, and the detected signal is selected from among a plurality of individual cores of the upper core layer 332 and a plurality of individual cores of the bottom core layer 331. A position discrimination step S03 for determining which signal is detected from which core is performed.

A switching control signal transmission step S04 is performed in which a switching signal for switching to the corresponding core side determined by the position determination step S03 is transmitted to the state control block 22 side.

The series of standby steps (S01), ID signal detection step (S02), position discrimination step (S03), and switching control signal transmission step (S04) are carried out, together with the switching control signal transmission step (S04). The power transmission control signal is transmitted to the driver 15 so that power is applied from the resonant converter 14 to the bottom switch part 211 and the upper switch part 212, and the electric power is induced from the corresponding switched on core. A contactless power transmission step S05 is performed to allow the magnetic field to be transmitted.

Accordingly, any one of the lower switching unit 211 and the upper switching unit 212 switched by the state control block 22 receiving the control signal of the control unit 11 is connected, thereby operating The induction magnetic field is transmitted by a signal transmitted from the resonance type converter 14 to the corresponding individual core connected to the individual switching unit.

Therefore, according to the multi-contact charging station 10 according to the present invention provided as described above, by using the electromagnetic induction electromotive force to transmit the power signal wirelessly without a line, regardless of the type of portable devices (Portable Devices) (eg For example, PDA, PMP, MP3P, DMB, etc.) will be charged.

In particular, by stacking a planar core structure on a flat PCB in multiple layers, the contactless power receiver 50 is placed at any position of the station portion 30 of the multi-contact charging station 10, and thus charging is possible regardless of the situation. It is to be provided, the user is provided to be chargeable without inconvenience.

Of course, the contactless charging station 10 for the purpose of recognizing the contactless power receiving device 50, which is a dedicated battery pack capable of wireless charging, so as to recognize the unique ID signal, and to recognize the charging state to the outside A display unit 101 of a display unit (such as an LED or LCD) for displaying may be provided. In addition, the wireless communication module (Bluetooth, zigbee, wifi, wibro, etc.) that can be synchronized with the wireless data communication function built in the portable device, and other metal foreign matter other than the portable device to be charged can be detected and blocked. It may be provided with a member capable of functions such as foreign matter detection, overload and temperature protection.

In particular, the multi-contact charging station 10 may be provided with a resonant converter, a core, and a free driver for transmitting a magnetic field, and a multi-layer structure for determining the position of the contactless power receiving device 50 such as a battery pack. Alternatively, the core may be provided as a multilayer structure. The power signal is transmitted only from the individual cores of the individual flat PCB winding module capable of unique ID communication with the contactless power receiver 50. For this purpose, only the core of the flat PCB winding module is switched to enable the power signal transmission operation. The control unit 11 may be provided with a switching module control circuit for preventing other cores from operating and a processor capable of performing a series of control algorithms therefor.

In the multi-contact charging station 10 according to the present invention provided as described above, without the core in the form of a litz core using a bond wire according to the prior art, a power transformer PC core in the form of a thin film flat PCB transformer ( PT-PCB Core) is to be provided to have an improved function to facilitate the use and manufacturing while having better characteristics than the existing core.

In particular, the individual cores of the primary side core part 31 provided as described above are provided as a power transformer PC core in the form of a planar thin-film PCB transformer, and the contactless power receiver 50 before charging on the station part 30 swings. In this case, the strength of the received power will change due to the positional change of the individual core of the primary side core part 31 and the secondary side core 51 of the contactless power receiver 50. Accordingly, when it is difficult to achieve stable power transmission due to the movement of the contactless power receiver 50, a power transmission algorithm for compensation for power transmission should be applied. According to the present invention, the magnetic field strength of the center portion of the core is increased so that the intensity of the magnetic field is concentrated, while the strength of the outer portion is lowered, thus forming a parabolic structure so that the transmitted voltage can be imbalanced.

As described above, when the voltage measured at the rectifying stage falls below a reference value (for example, 4.5 V or less) in the contactless power receiver 50 during charging operation, power compensation is performed to the multi-contact charging station 10 side as shown in FIG. 8. Data transfer will be performed. Accordingly, the multi-contact charging station 10 receives a signal for compensation of power transmission transmitted from the contactless power receiver 50, and compensates in a state in which power transmission power is adjusted as shown in FIG. To transmit the power signal.

Of course, as shown in FIG. 7 and FIG. 8, the induced voltage in the contactless power receiver 50 on the secondary side may be provided to be stably charged by 4.5 to 5.5 V by the power transmission and reception control algorithm.

Thus, when the power transmission and reception control algorithm is not applied, the power transmission efficiency is lowered as shown in FIG. 9, but when the power transmission and reception control algorithm is applied, a constant power transmission efficiency appears as shown in FIG. 10. In 50, the power signal is stably received. Therefore, in the secondary battery pack, there is less need to adjust the voltage according to the amount of power received, so that no unnecessary additional members such as a DC-to-DC converter are required, thereby making the battery pack smaller in size. There is an advantage.

In particular, in the multi-contact charging station 10 according to the present invention, the induction pattern core has a multilayer structure in which the primary side core part 31 of the station part 30 includes the bottom core layer 331 and the top core layer 332. It can be seen that (33) is formed. In the case where a plurality of cores are arranged in a single layer, individual cores are arranged in a vertical magnetic field method, and thus, when the secondary side core part 51 is positioned between the individual cores arranged on a plane, a power signal is transmitted. In addition, a black hole region may be formed in which data transmission and reception are not smooth. In addition, when the contactless power receiving device 50 being charged is located in a black hole region where signals are not transmitted and received smoothly, the ID contact signal for finding the contactless power receiving device 50 in the multi-contact charging station 10 side. By continuing to transmit, there is a fear that the charging efficiency is eventually reduced.

Therefore, when the individual cores are arranged such that the individual cores such as the bottom core layer 331 and the top core layer 332 intersect with each other, a black hole region does not occur, and thus the contactless power reception is performed on the station unit 30. Even if the device 50 moves in oscillation, the charging efficiency is improved as a whole by continuing the charging operation by sending an ID request signal from a neighboring core.

In addition, in the case of forming a wide ID, since the request signal is sequentially transmitted from all individual cores during the unique ID signal request step of finding the contactless power receiver 50 for the entire coil, the ID communication time is equal to the number of individual cores. It will take. That is, assuming that the time for ID communication in each core is 100ms / 1 core, and there are a total of 36 individual cores, the total request time is 3.6s.

However, since it is divided into two separate blocks (A Block, B Block) as in the present invention, only half of the time is required (100 ms / 1 core * 36/2 = 1.8 s). Therefore, since the initial time for finding the contactless power receiver 50 can be reduced, the power transmission efficiency is also improved.

With the configuration of the multi-contact charging station 10 operated in this way, the control unit 11 (Wireless Power Transfer Controller) is a microprocessor unit performing a wireless power control algorithm as shown in FIG. 19) is to receive data to the unique ID of the individual core and the unique ID of the contactless power receiver 50 for the individual ID communication with the receiver core to transmit to the control unit 11. The state control block 22 is a switch controller for controlling a solid state relay (SSR) connected to individual cores, and the resonant converter 14 is a series resonance type for generating a magnetic field by performing LC resonance. The converter section, and the predriver 15 is a drive driver for driving the converter. In addition, the resonant converter 14 and the pre-driver 15 are connected to the bottom core layer 331 and the upper core layer 332, and the like, respectively, to operate the bottom resonant converter 141, the bottom free driver ( 151 and the upper resonant converter 142, the upper free driver 152 and the like.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art without departing from the spirit and scope of the invention described in the claims below In the present invention can be carried out by various modifications or variations.

1 is a control diagram for a multi-contact charging station according to the present invention.

Figure 2 is a schematic layer configuration example of the primary side core portion of a multi-contact point charging station according to the present invention.

Figure 3 is a schematic illustration of the station portion of a multi-contact charging station according to the present invention.

Figure 4 is an exemplary embodiment of the picture of the individual core of the multi-contact charging station according to the present invention.

5 is a power transmission control configuration diagram of a multi-contact power charging station according to the present invention.

6 is a power transmission control flowchart for a multi-contact power charging station according to the present invention.

7 and 8 is a power transmission control flow chart for a multi-contact power charging station according to the present invention.

9 and 10 is an efficiency graph according to the power transmission for the multi-contact power charging station according to the present invention.

11 is an exemplary view showing a state where a contactless power receiver is located in a contactless power charging station according to the present invention.

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

10: Multi-contact Charging Station

11: control unit 12: station memory unit

13 power supply 14 resonant converter

15: free driver 19: ID signal detection unit

22: State Control Block

30 station portion 31 primary side core portion

32: PC base 33: induction pattern core

35: shield 50: contactless power receiver

51: secondary side core portion 52: rectifier block

53: battery cell 54: battery pack control unit

55: charging circuit block 56: charging monitoring circuit

211: bottom switching part 212: top switching part

321: gap panel 331: bottom core layer

332: upper core layer

351: shielding panel portion 352: shielding mesh portion

353: metal thin film portion

Claims (5)

In the multi-contact charging station 10 for transmitting an induction magnetic field for charging power and data transmission to the contactless power receiving device 50 side, The contactless charging station 10 is a control unit 11 for power transmission and data transmission and reception therein, and is electrically connected to the control unit 11 so that an induction magnetic field is transmitted, and the contactless power receiver to the top. It is provided that includes a station unit 30 is placed 50, The station unit 30 is provided with a primary side core portion 31 for transmitting an induction magnetic field, The primary side core portion 31 is provided with an induction pattern core 33 on the PC base 32, the PC base 32 is provided to be fastened to the station unit 30, The inductive pattern core 33 is a planar spiral, characterized in that it is provided with a power transmission-PCB core (PT-PCB Core) having a planar spiral core structure (PSCS, Planar Spiral Core Structure) Equipped with a core power transformer PC core, The induction pattern core 33 of the primary core part 31 is provided with a bottom core layer 331 formed of a plurality of cores on the base of the PCB base 32, and a gap panel (upper part of the bottom core layer 331). 321 is provided with an upper core layer 332 made up of a plurality of cores, The bottom core layer (331) and the upper core layer (332) is a multi-contact charging station provided with a multi-layered power transformer BC core of a planar spiral core structure, characterized in that the position is provided to cross each other. The method of claim 1, The induction pattern core 33 of the primary side core part 31 has a circular core structure in the form of a flat circular spiral core, an elliptical core structure in the form of a flat elliptical spiral core, a triangular core structure in the form of a flat triangular spiral core, Helix core structure in the form of a flat rectangular spiral core, Hexagonal core structure in the form of a flat pentagonal spiral core, Hexagon core structure in the form of a flat hexagonal spiral core A multi-contact charging station provided with a multi-layered power transformer PC core of a planar spiral core structure, characterized in that the core structure. The method of claim 1, The primary side core portion 31 is provided with a shielding portion 34 below the induction pattern core 33, The shielding part 34 is formed of a shielding panel part 341, a shielding mesh part 342, and a metal thin film part 343. The multi-layered power transmission PC core having a planar spiral core structure is provided. Contactless charging station. The method according to any one of claims 1 to 3, A power supply unit 13 for supplying power; A resonant converter 14 for supplying the power of the power supply unit 13 to the bottom core layer 331 and the upper core layer 332 of the primary side core part 31; A predriver 15 for transmitting an oscillation signal to the resonant converter 14 under control of a control unit 10; A control unit 11 for controlling the resonance converter 14 to be operated; A station memory unit 12 in which data is stored; An ID signal detection unit 19 connected to the bottom core layer 331 and the top core layer 332 of the primary side core part 31 for discriminating a signal transmitted from the contactless power receiver 50 is included. Become, The resonant converter 14 includes a bottom resonant converter 141 which transmits a power signal to a plurality of cores of an A block in which the bottom core layer 331 is provided, and the upper core layer 332. An upper resonant converter 142 for transmitting a power signal to a plurality of cores of the non-block (B Block) is provided, The predriver 15 receives a control signal of the control unit 11 and transmits a signal to the bottom resonant converter 141 and a signal to the bottom resonant converter 142 and the upper resonant converter 142. The upper free driver 152 is provided to transmit, A plurality of bottom switching units 211 connected to the bottom resonant converter 141 for separately applying a power signal to a plurality of cores of the bottom core layer 331 are provided. A plurality of upper switching units 212 are connected to the upper resonant converter 142 and individually apply a power signal to a plurality of cores of the upper core layer 332. The power control of the planar spiral core structure, characterized in that the state control block 22 for switching the bottom switching unit 211 and the upper switching unit 212 under the control of the control unit 11 is provided. Multi-contact charging station equipped with PC core in double layer type. A standby step (S01) of requesting a unique ID signal to the contactless power receiver 50 through a plurality of cores of the primary side core unit 31 under the control of the control unit 11; An ID signal detection step (S02) of transmitting a unique ID signal from the contactless power receiving device (50) through the individual cores in the standby step to perform signal processing on the ID signal detection unit (19); The signal detected by the ID signal detection unit 19 is transmitted to the control unit 11, and it is determined whether the detected signal is a signal detected from a plurality of cores of the lower core layer 331 and the upper core layer 332. Position discrimination step (S03) to be; A switching control signal transmission step (S04) of transmitting a switching signal to a state control block (22) to switch the operation to the corresponding core side determined by the position discriminating step (S03); In addition to the switching control signal transmission step (S04), the power transmission control signal is transmitted to the predriver 15 side, so that power is applied to the plurality of bottom switch parts 211 and upper switch parts 212 from the resonant converter 14. The power transmission PC core of the planar spiral core structure, which includes a contactless power transmission step (S05) for receiving an induction magnetic field by receiving power from the corresponding switched on core, is provided. Control method of multi-contact charging station.

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