KR101026223B1 - Mutiple charging station with step-difference structure using wireless power transfer technology - Google Patents

Abstract

The present invention provides a control unit that is embedded in the electronic circuit for power transmission and data transmission and reception; A station unit which is electrically connected to the control unit and is configured to generate an induction magnetic field, and is formed to be in contact with the main surface of the charging object placed on the upper portion, and has upper and lower stations having a stepped structure having different heights; Upper and lower cores installed in each of the upper and lower stations, the upper and lower cores being respectively configured to generate the induction magnetic field with height difference with respect to each other; And a boundary wall protruding from four corners defining each of the upper and lower stations, and surrounding four sides of the object to be charged in each of the stations, and providing a stepped structure-type wireless multi-charging station.

Solid State Charger, Battery Pack, Portable Terminal, Wireless Multi Charging Station

Description

MUTIPLE CHARGING STATION WITH STEP-DIFFERENCE STRUCTURE USING WIRELESS POWER TRANSFER TECHNOLOGY}

The present invention relates to a wireless multi-charging station, and more particularly, a stepped-type wireless multi-stage for stable charging operation by placing only a single battery pack or a portable terminal for each primary side core for a plurality of primary side cores. It relates to a charging station.

In general, portable devices such as mobile phones, PDAs, PMPs, DMB terminals, MP3 players, or laptops are not always able to use a regular home power supply, so they are equipped with disposable batteries or rechargeable batteries.

In addition, a contactless charger has been developed to charge the battery of the portable device. In the contactless charger according to the related art, when the terminal having the battery to be charged is located on the upper portion of the primary coil of the contactless charger, it is charged by the induced electromotive force in the secondary coil of the battery. That is, the secondary coil is used to charge electricity induced by induced electromotive force by the magnetic field generated by the primary coil.

However, these conventional contactless chargers only supply power to the portable terminal and cannot be used for other purposes, and thus have limitations in practical use. In addition, the general contactless charger is required to detect the presence of foreign matters before transmitting power wirelessly.

In particular, there is a problem that only a single battery pack can be charged through one charger, and that it cannot be charged more stably.

In order to solve the above problems, the present invention can charge a plurality of battery packs or portable terminals through one wireless multi-charging station, and thus, charging efficiency can be increased, and further, individual 1 for a plurality of primary cores can be charged. The purpose of the charging operation is to be made stable by having only a single battery pack or a portable terminal for each side core.

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Furthermore, in order to ensure that only one battery pack or portable terminal is placed on each of the primary cores, since the individual primary cores are formed in a stepped structure spaced apart from each other, one primary core has one battery pack or portable terminal. It is only put there, and the purpose is to prevent overcharge or charging malfunction.

Stepped structure-type wireless multi-charging station according to the present invention for achieving the above object, the control unit is embedded in the electronic circuit for power transmission and data transmission and reception; A station unit which is electrically connected to the control unit and is configured to generate an induction magnetic field, and is formed to be in contact with the main surface of the charging object placed on the upper portion, and has upper and lower stations having a stepped structure having different heights; Upper and lower cores installed in each of the upper and lower stations, the upper and lower cores being respectively configured to generate the induction magnetic field with height difference with respect to each other; And a boundary wall protruding from four corners defining each of the upper and lower stations and surrounding four sides of the object to be charged in each station.

The boundary wall of the upper station, the upper side guide projecting upward from the outer edge of the upper platform of the center where the charging object is placed; An upper vertical guide portion protruding upward from the other edge of the control part; A center guide protruding upward from the lower station direction edge; And a control wall surface formed in a lateral direction of the control unit, wherein the boundary wall of the lower station includes: a lower side guide upwardly protruding from an outer edge of the lower platform on which the charging object is placed; A lower vertical guide protrusion protruding upward from an edge of the other side of the control unit; A center wall in the direction of the upper station; And the control wall surface.

The control unit may include a display unit for displaying an operation state of the control unit, a data transmission / reception state and a power transmission state with a charging target placed in the station unit.

In addition, the upper and lower stations are each formed to have a rectangular area in which the charging object is placed, each corner of the rectangular area is surrounded by the inclined control wall surface of the guides, the central wall and the control unit Can be formed.

Furthermore, the upper station further includes an upper shielding member disposed around the upper core, and the lower station further includes a lower shielding member disposed around the lower core, and the upper shielding member and the lower shielding member are strong. Dust and polyurethane may be included. The surface on which at least one charging object of the upper and lower stations is placed may be formed to be parallel to the bottom surface of the station unit.

Since the present invention provided as described above can charge a plurality of battery packs or portable terminals through one wireless multi-charging station, charging efficiency can be increased, and further, for each primary side core for a plurality of primary side cores. Only a single battery pack or a portable terminal is placed so that the charging operation is stable.

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Furthermore, in order to ensure that only one battery pack or portable terminal is placed on each of the primary cores, since the individual primary cores are formed in a stepped structure spaced apart from each other, one primary core has one battery pack or portable terminal. Only put in place, there is an excellent advantage to prevent overcharge or charging malfunction.

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

1 is a perspective view of a wireless multi charging station according to the present invention, Figure 2 is a plan view of a wireless multi charging station according to the present invention, Figure 3 is a cross-sectional view of the station of the wireless multi charging station according to the present invention, Figure 4 is a schematic circuit diagram of a wireless multi charging station according to the present invention, FIG. 5 is a schematic control block diagram of a wireless multi charging station according to the present invention, and FIG. 6 is a wireless multi charging station according to the present invention. Perspective views of different embodiments are shown, respectively.

That is, the stepped structure-type wireless multi-charging station A according to the present invention is a wireless multi-charging station A for generating an induction magnetic field for power charging and data transmission to the battery pack B side as shown in FIGS. 1 to 6. ).

Looking at the schematic circuit diagram of the wireless multi-charging station (A) as follows. That is, as shown in Figure 4, connected to the notebook (C) or computer is provided with a USB Emulation control block (USB Emulation control block) that is supplied with power or data, or to provide a general household power supply wireless multi-charging station ( A power supply unit 13 for supplying power to the members of A) is provided.

The power supplied from the power supply unit 13 controls the magnitude of the output voltage and current by the control of the station controller 11 (MPU Block), thereby pre-driver 15 (Bootstrap Gate Driver, Gate Drive Block), the station controller 11 Resonant converter (14, LLC Full-bridge Serial Resonator) that applies an input voltage to each member of the wireless multi charging station (A) such as the ion generating unit (16) and can be a half wave or a full wave series / parallel. It is configured to apply driving voltage to each converter.

In addition, interposed between the power supply unit 13 and the resonant converter 14, that is, between both ends of R (sense) in Figure 4 detects the current change in accordance with the approach of the battery pack (B), according to the amount of current change A current detector 17 for outputting a comparison current may be provided.

The station controller 11 detects the approach of the battery pack B using the comparison current input from the current detector 17, controls the predriver 15 according to whether the station controller 11 accesses the abnormal state, or raises a foreign substance. When the temperature rises or rises above the set temperature, the pre-driver 15 is controlled by switching off according to the signal of the temperature protection circuit unit 18.

In addition, voltage and current waveforms flowing to the primary side core 33 by the gate driver inputted from the predriver 15, which is a gate driver, which outputs the gate signal under the control of the station controller 11, and the predriver 15 The primary side core 33 or the like that is switched by the half wave or full wave series / parallel resonant converter 14 and the half wave or full wave series / parallel resonant converter 14 to generate an induced magnetic field. This can be configured.

That is, the induced magnetic field is generated in the primary side core 33 by the control of the station controller 11 with respect to the power supplied from the outside, and thus the battery pack embedded in the removable battery pack B or the portable terminal D. Induced electromotive force is generated in the secondary side core 51 provided in (B) and the like so as to be used as a power source.

Accordingly, the primary side core 33 may be provided to generate a charging induction magnetic field in each of the battery packs B. In an embodiment of the present invention, the primary core 33 may be a circular spiral coil, an uncore core, a rectangular spiral coil, or a winding core. It may be provided as a coil or the like. However, the present invention is not limited thereto, and may be provided in various forms to generate an induction magnetic field capable of transmitting power to the battery pack.

The battery pack (B) of the present invention is a secondary measurement flow for converting the induced electromotive force generated in the secondary side core 51 by the induced magnetic field generated by the primary side core 33 of the wireless multi charging station (A) Connected to the circuit unit 52 and the secondary measurement circuit unit 52 to supply charging power to the battery cell 53, and processes data transmitted and received by the primary side core 33 and the secondary side core 51 Under the control of the battery pack control unit 54 and the battery pack control unit 54, the power supplied from the secondary measurement flow circuit unit 52 is supplied to the battery cell 53, the power of the battery cell 53 Battery pack charging circuit unit 55 for supplying the portable terminal (D) may be provided.

The data I / O unit 56 processes the data transmitted and received with the wireless multi charging station A and processes the data to transmit and receive data with the portable terminal D under the control of the battery pack control unit 54 and the battery. Charge monitoring circuit 57 for monitoring the charge level of the cell 53 and transmits a signal of a full charge or discharge state to the battery pack control unit 54 may be included.

Looking at the charging operation by the wireless multi-charging station (A) of the present invention as follows. The battery pack B is coupled with the secondary side core 51 and the core of the secondary side core 51, which are induced from the induced magnetic field generated from the core of the primary side core 33, and the induced electromotive force. It is provided with a secondary measurement flow circuit unit 52 for rectifying the.

Then, the power rectified by the secondary measurement circuit unit 52 is supplied to the battery pack control unit 54, and the battery pack charging circuit unit 55 and the battery pack charging circuit unit 55 are output according to the output of the battery pack control unit 54. The fuel gauge 58 for supplying the power supplied from the power supply to the battery cell 53 through the charge monitoring circuit 57, monitors the state of charge of the battery cell 53 to generate the state of charge information periodically recorded Can be configured.

In addition, the charging and monitoring circuit unit 57 coupled between the battery pack charging circuit unit 55 and the battery cell 53 is configured to control whether to charge or discharge according to the state of charge of the battery pack.

Accordingly, the secondary side core 51 may be configured in various forms such as a circular spiral coil, which is a core, a rectangular spiral coil, which is a core, or a winding core, which is a winding core.

In the wireless multi-charging station (A) of the present invention configured as described above, when the wireless multi-charging station (A) is not in contact with the battery pack (B) for charging, the primary side core (33) PWM pulses are applied at regular time intervals to detect whether the battery pack B is approaching. The primary core 33 generates a magnetic field of the interval signal with a constant pulse with a PWM pulse. Therefore, when the portable terminal (D) or the battery pack (B) approaches the wireless multi charging station (A), the shape of the pulsed magnetic field in the primary side core 33 is changed, thereby changing the magnetic field is the primary side core ( In 33) it is detected as load modulation. If foreign matter, which is a general metal object other than the battery pack B, approaches or comes into contact with it, since only an irregular magnetic field change occurs without any response, the load modulation signal will eventually be detected as an undefined signal.

In the battery pack B receiving the induction magnetic field of the PWM pulse, the signal is transmitted through the secondary side core 51 by the signal specified in the unique ID transmitting chip under the control of the battery pack control unit 54 of the battery pack. do.

Accordingly, the magnetic field load change signal according to the unique ID of the battery pack B is detected by the ID signal detector 19 connected to the primary side core 33, and when the detected signal corresponds to the unique ID of the normal battery pack, The proper signal is transmitted to the station controller 11. However, as mentioned above, if an irregular signal caused by a foreign material such as a metal object is detected, the foreign material is transmitted to the station controller 11 to block switching for power transmission.

However, when it is determined that the battery pack (B) is controlled to transmit power to the battery pack (B). Of course, when it is determined that there is no access of the foreign matter or the battery pack (B), the ID signal detection unit 19 transmits a signal suitable for this to the station controller 11, so that the wireless multi charging station A is initially in a low power state. It can be provided to maintain a state.

When the ID signal detector 19 detects the approach of the battery pack B by the charging start signal, the station controller 11 signals for power transmission to the power supply unit 13 and the predriver 15. In this case, the resonant converter 14 applies a voltage and a current of a size appropriate to the induction magnetic field to the primary side core 33 so that the primary side core 33 generates an appropriate induction magnetic field. .

Accordingly, the induced electromotive force induced by the primary side core 33 in the secondary side core 51 of the battery pack B or the battery pack B embedded in the portable terminal D corresponding to the primary side core 33. Is transmitted to the secondary measurement circuit unit 52, and the battery pack control unit 54 receives the induced electromotive force of the secondary side core 51 and the secondary measurement circuit unit 52, the power is supplied to the battery pack charging circuit unit 55 It charges to the battery cell 53 through, and controls to transmit the reception state and the charging state of the charging power to the wireless multi charging station (A) through the secondary side core (51).

As a result, the wireless multi charging station A controls the power supply unit 13 and the predriver 15 in the station controller 11 so that the charging power continues to be generated when the signal of the normal charging state is received.

In the battery pack B, the battery pack 53 is charged by the battery pack charging circuit unit 55, the fuel gauge 58, the charge monitoring circuit unit 57, and the like under the control of the battery pack control unit 54. . The charged power is monitored by the fuel gauge 58, and when the battery is fully charged, the fully charged state is transmitted to the battery pack controller 54, which is again controlled by the battery pack controller 54. And transmitting a signal in a full charge state through the primary side core 33 to block transmission of charging power from the station controller 11 of the wireless multi charging station A to the power supply unit 13 and the predriver 15. Can be configured to

Wireless multi-charging station (A) according to the present invention provided as described above, as shown in Figure 1, the control unit 10 is embedded therein the electronic circuit for power transmission and data transmission and reception, and the control unit 10 It is electrically connected with the induction magnetic field is generated and the station 30 is provided with the battery pack (B) is placed on top.

In particular, the station unit 30 may be provided with a plurality of multi-charging station platform so that a plurality of battery packs (B) or portable terminals (D) and the like are placed and charged. In particular, the plurality of multi charging station platforms may be formed in a stepped structure having a height difference from a platform next to each other.

That is, as shown in FIGS. 1 to 3, one or a plurality of upper stations 31 having a height formed on one side thereof are provided, and one or a plurality of lower stations 32 having a lower height than the upper station 31 on the other side thereof. ), Each of the upper station 31 and the lower station 32 may be provided to form a stepped structure with each other.

Therefore, in the wireless multi charging station A in which a plurality of charging regions are formed, the upper station 31 and the lower station 32 are alternately formed, so that the battery pack B or the portable terminal D, etc. The charging stage will not be placed on the platform.

Thus, since only a single battery pack (B) or portable terminal (D) is placed in the upper station 31 or the lower station 32 of the wireless multi charging station A, the power transmission and signal transmission and reception states are good. There is an excellent advantage to lose.

That is, when a plurality of charging station platforms are provided, when the next platform is the same height or the same height, the battery pack or the portable terminal may be simultaneously placed on two charging station platforms attached to each other. Thus, two charging station platforms can simultaneously charge and operate a single battery pack or portable terminal, which may overcharge the battery pack or portable terminal, overheat the charging circuit or charging coil, or even damage the charging circuit. There will be.

However, in the wireless multi-charging station (A) according to the present invention, since the heights of the plurality of charging station platforms are different from each other, only one battery pack or a portable terminal can be placed in one charging station platform, thereby charging There is an excellent advantage that the operation can be done reliably.

The upper station 31, in particular, the upper side guide 312 protrudes upward from the outer edge of the upper platform 311 of the center where the battery pack (B) is placed; An upper vertical addition guide 313 protruding upward from the other edge of the control unit 10; The center guide 314 upwardly protruded from the edge of the lower station 32 may be included.

Similarly, the lower station 32 also includes a lower side guide 322 upwardly protruding from the outer edge of the lower platform 321 on which the battery pack B is placed; A lower type sub guide 323 protruding upward from an edge of the other side of the control unit 10; And the center wall 324 and the like in the direction of the upper station 31 will be included.

In this way, the upper station 31 is placed on the upper platform 311 by the edge protruding jaw surrounded by the upper side guide 312, the upper vertical guide 313 and the center guide 314 as the peripheral edge. The battery pack or the portable terminal will not fall, and the charging operation will be stable.

Even in the case of the lower station 32, the battery pack or the portable terminal by the lower side guide 322, the lower type guide 323 and the center wall 324 does not fall, it can be a stable charging operation.

Of course, a control wall surface 102 is formed in the direction of the control unit 10, and the control wall surface 102 is formed to be inclined so that a battery pack or a portable terminal placed near the control wall surface 102 is stationary. It may be provided to be placed on the upper surface of the upper platform 311 or lower platform 321 of the negative.

In the wireless multi-charging station (A) according to the present invention provided as described above, the operating state of the control unit 10, the battery pack (B) placed on the station unit 30 on the upper surface of the control unit 10 ) May be provided with a display unit 101 which is an LCD or an LED to display data transmission and reception and power transmission status.

When the foreign matters are placed on the upper station 31 and the lower station 32, the battery pack or the portable terminal is searched by the LCD of the display unit 101, the LED, or the like, the charging is being performed. When an error occurs, the fully charged case may be provided to be displayed separately.

The control unit 10 of the wireless multi-charging station (A) according to the present invention, the power supply unit 13 for supplying power; A resonant converter 14 for supplying power of the power supply unit 13 to the primary side core 33 of the station unit 30; A predriver (15) for transmitting an oscillation signal to the resonant converter (14) under the control of a station controller (11); A station controller (11) for controlling the resonant converter (14) to operate; And a station memory unit 12 may be included.

The primary side core 33 includes an upper core 331 embedded in the upper platform 311 of the upper station 31 and a lower core 332 embedded in the lower platform 321 of the lower station 32. ) May be provided in plurality.

With respect to the plurality of primary side cores 33, unique ID data signals of a battery pack or a portable terminal which are individually connected to the upper core 331 and the lower core 332 and located on the respective station platforms 311 and 321. The ID signal detection unit 19 for detecting the above may be provided. The plurality of primary side cores 33 (that is, the upper core 331 and the lower core 332, etc.), and the plurality of resonant converters 14, which are individually connected to the primary side core 33, may be individually connected. Pre-driver 15 is to be provided.

It may also be provided to protect a plurality of members of the wireless multi charging station (A) from the induction magnetic field. That is, a shielding member (HPES: Hanrim Postech Electro-magnetic shield) for protecting the components from the magnetic field in the vicinity of the upper core 331 and the lower core 332, which are the primary side cores 33 of the station part 30, may be provided. It can be.

That is, the upper station 31 may be provided with an upper shielding member 34 around the upper core 331 of the upper platform 311, the lower station 32 is the lower core of the lower platform 321 The lower shield member 35 may be provided around the 332.

In particular, the upper shielding member 34 or the lower shielding member 35 may include a sender and a polyurethane.

The upper shielding member 34 or the lower shielding member 35 of the wireless multi charging station A may be made of 25 to 55 parts by weight of polyurethane based on 55 to 75 parts by weight of Sendust. .

Sendust (sendust) is composed of aluminum, silicon, iron, etc., and corresponds to a high permeability alloy. The shielding member is provided by combining the sender and polyurethane with excellent shielding performance. 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. In particular, the wireless multi-charging station (A) side may be less dense magnetic density per unit area, the sendust is 55 to 65 parts by weight, polyurethane may be provided containing 35 to 45 parts by weight. Preferably, 60 parts by weight of Sendust and 40 parts by weight of polyurethane may be included.

As described above, the magnetic field induced from the primary side core 33 may be effectively shielded by the upper shielding member 34 or the lower shielding member 35 including the sender in the form of a panel.

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 perspective view of a wireless multi-charging station according to the present invention.

2 is a plan view of a wireless multi-charging station according to the present invention.

Figure 3 is a cutaway view of the station of the wireless multi-charging station according to the present invention.

Figure 4 is a schematic circuit diagram for a wireless multi-charging station according to the present invention.

5 is a schematic control block diagram for a wireless multi charging station according to the present invention.

Figure 6 is a perspective view of another embodiment of a wireless multi-charging station according to the present invention.

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

A: Wireless Multi Charging Station B: Battery Pack

10: control unit 11: station controller

12: station memory unit 13: power supply unit

14: resonant converter 15: free driver

30: station 31: upper station

32: lower station 33: primary side core

34: upper shield member 35: lower shield member

101: LCD 102: LED

Claims (6)

A control unit in which an electronic circuit for power transmission and data transmission and reception is embedded; A station unit which is electrically connected to the control unit and is configured to generate an induction magnetic field, and is formed to be in contact with the main surface of the charging object placed on the upper portion, and has upper and lower stations having a stepped structure having different heights; Upper and lower cores installed in each of the upper and lower stations, the upper and lower cores being respectively configured to generate the induction magnetic field with a height difference with respect to each other; And And a boundary wall protruding from four corners defining each of the upper and lower stations, and surrounding four sides of the object to be charged at each station. The method of claim 1, The boundary wall of the upper station, the upper side guide projecting upward from the outer edge of the upper platform of the center of the charging object; An upper vertical guide portion protruding upward from the other edge of the control part; A center guide protruding upward from the lower station direction edge; And a control wall surface formed in a lateral direction of the control unit. The boundary wall of the lower station, the lower side guide projecting upward from the outer edge of the lower platform on which the charging object is placed; A lower vertical guide protrusion protruding upward from an edge of the other side of the control unit; A center wall in the direction of the upper station; And the control wall surface, the stepped structure-type wireless multi charging station. The method of claim 1, The control unit is provided with a display unit for displaying the operation state of the control unit, the data transmission and reception and the power transmission state with the charging object placed in the station unit, stepped structure type wireless multi charging station. delete The method according to any one of claims 1 to 3, The upper station further includes an upper shielding member disposed around the upper core, and the lower station further includes a lower shielding member disposed around the lower core. The upper shielding member and the lower shielding member is provided with a sender and polyurethane, stepped structure type wireless multi-charging station. The method of claim 1, And a surface on which at least one charging object of the upper and lower stations is placed is formed to be parallel to the bottom surface of the station unit.

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