KR102351066B1 - Interface for wireless power transmission device - Google Patents

Abstract

The present invention provides an interface of a wireless power transmission device for a vehicle installed in a vehicle, comprising: a power receiving module configured to receive power from a power transmission module installed outside the vehicle; and a screen for selecting charging by wireless power transmission and wireless power transmission by controlling at least one of the location of the vehicle, the power transmission module and the power reception module so as to transmit power from the power transmission module to the power reception module It includes a user interface module that provides a screen that can be used.

Description

INTERFACE FOR WIRELESS POWER TRANSMISSION DEVICE

The present invention relates to a user interface of a power transmission device for a vehicle, and more particularly, provides an interface between a power receiving module for wireless power transmission and a user, and data communication between the power receiving module and the interface follows the communication protocol of the present invention By doing so, it relates to an interface of a wireless power transmission device that allows a user to easily charge a high voltage battery vehicle, and a charging method using the same.

Currently, automobile manufacturers in each country are developing a vehicle using a high voltage battery, and accordingly, various technologies for charging a vehicle using the high voltage battery are being studied. In particular, a technology for wirelessly charging a vehicle using a high voltage battery has been researched internationally and has reached the stage of establishing a technical standard. The technology for wirelessly charging a vehicle using a high-voltage battery currently discussed internationally is being studied as follows.

1 is a conceptual diagram showing a wireless power transmission device according to the prior art, FIG. 2 is a block diagram showing a wireless power transmission device according to the prior art, and FIG. is a block diagram showing

1 to 3 , the wireless power transmission device for a vehicle 1 is a power transmission module 10 that receives an AC 220V voltage from the ground and switches a transmission coil, and transmits the energy of the power transmission module to a power reception module through resonance. It is composed of a /receiving pickup coil 20 , a power receiving module 30 that switches the received energy to match the high voltage battery of the vehicle, and a battery management system (BMS) 40 .

The power transmission module 10 installed on the floor in a road or parking lot and the power reception module 30 mounted on the bottom of the vehicle perform wireless data communication according to a communication protocol, thereby performing wireless charging start and wireless charging completion operations.

More specifically, in the wireless data communication between the power transmission module 10 and the power reception module 30, the information provided by the power transmission module 10 to the power reception module 30 uses the communication protocols of Tables 1 to 4 below. follow

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XX1 CF_COMMUCATION_SET

100ms
0
0 One

power transmission module

faucet module Communication status setup
(Communication start) CF_POLLING STATE One One Message for periodic power reception module status monitoring CR_ID_CHK 2 16 ABCDE ID confirmation message CR_CHARGER_NUM_CHK 4 32 1234 Charger number confirmation message CR_CUR_FAULT_CHK 6 48 1011 Current fault information confirmation message CAR_NUM 1s 7 56 0-255 vehicle identification number

Here, XX1 is information transmitted by the power transmission module, and is data related to a communication state between the power transmission module and the power reception module, a power reception module confirmation message, vehicle information, and the like.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XX2 CF_CONTROL_START

100ms 0 0 One

power transmission module

faucet module Start wireless charging CR_TX_STATE One 8 0~4 0 : Normal, 1 : Abnormal,
2: Standby, 3: Power transmission
4: Transmission of the status value of the power transmission module CR_RX_STATE 2 16 0~4 0 : Normal, 1 : Abnormal,
2: Standby, 3: Power transmission
4: Request for transmission module status value CR_TX_FAULT 4 32 1111 Transmission module colt status message CR_RX_FAULT 6 48 1011 Transmission module colt status message

Here, XX2 is information transmitted by the power transmission module, and is data related to charging progress status information and the like.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XX3 BMS_INFO_REQ

100ms 0 0 One

power transmission module

faucet module BMS information request BMS_INFO_RESP_ACK One
8 One BMS information normal response message BMS_INFOR_RESP_NAK 9 One BMS information Abnormal tone message RX_CHAR_INFO_REQ 2 16 One Request for faucet module information RX_CHAR_INFO_RESP_ACK 3
24 One Receiver module information normal response message RX_CAR_INFO_RESP_NAK 25 One Receiver module information abnormal response message

Here, XX3 is information transmitted by the power transmission module, and is data related to a battery management system (BMS) and a request for information related to the power reception module.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT

XX4 CR_TX_AC_VOL

100ms 0 0 0~500

power transmission module

faucet module Transmission module input voltage CR_TX_AC_CUR One 8 0-50 Transmission module input current CR_TX_PSFB_IN_CUR 2 16 0-50 Transmission module full-bridge input voltage CR_TX_PSFB_IN_VOL 3 24 0~500 Transmission module full-bridge input current CR_TX_TEMP 5 40 -40~150 Transmission module temperature

Here, XX4 is information transmitted by the power transmission module, and is data related to power transmission module information, etc. In addition, in the wireless data communication between the power transmission module 10 and the power reception module 30 , the power reception module 30 transmits the power transmission module ( The information provided in 10) follows the communication protocols of Tables 5 to 8 below.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XX1 CF_CONTROLLABLE

100ms
0 0 One

faucet module

power transmission module Wireless charging start available status information message CF_COMMUNICATION_OK One One Communication status is normal CF_RESP_ACK 2 One normal response message CF_RESP_NAK 3 One Abnormal response message CR_TX_STATE One 8 0~4 0: Normal, 1: Abnormal
2; Standby, 3: Power Transmission
4: Receiver module status value transmission CR_RX_STATE 2 16 0~4 0: Normal, 1: Abnormal
2; Standby, 3: Power Transmission
4: Receiver module status value transmission CR_TX_FAULT 4 32 1111 Transmission module fault status message CR_RX_FAULT 6 48 1011 Receiver module fault status message

Here, XX1 is information transmitted by the power receiving module, and is data related to the communication status between the power transmitting module and the power receiving module.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT
XX2 BMS_CUR_INFOR
100ms 0 8 0-20
faucet module
power transmission module BMS Control Current Message BMS_VOL_INFO 2 16 0~500 BMS Control Voltage Message BMS_FAULT_STATE 4 32 1011 BMS fault information message BMS_TEMP 6 48 -40~150 BMS temperature message

Here, XX2 is information transmitted by the power receiving module, and is data related to BMS (Battery Management System) information and the like.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT

XX3 CR_RX_DC_VOL
100ms One 8 0~500

faucet module

power transmission module Receiver module output voltage message CR_RX_DC_CUR 2 16 0-50 Receiver module output current message CR_RX_TEMP 4 32 -40~150 Power faucet temperature message

Here, XX3 is information transmitted by the power receiving module, and is data related to the power receiving module related information.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT

XX4 CR_ID_CHK
100ms 2 16 ABCDE

faucet module

power transmission module ID confirmation message CR_CHARGER_NUM_CHK 4 32 1234 Charger number confirmation message CR_CUR_FAULT_CHK 6 48 1011 Current fault information confirmation message CAR_NUM 1s 7 56 0-255 vehicle identification number

Here, XX4 is information transmitted by the power receiving module, and is data related to vehicle information and ID confirmation.

The power reception module 30 and the battery management system (BMS) 40 mounted on the lower part of the vehicle exchange related information such as the state of charge, voltage, current, and setpoint, and allow the charging operation to be performed stably.

More specifically, in the wireless data communication between the power reception module 30 and the battery management system (BMS) 40, the information provided by the power reception module 30 and the battery management system (BMS) 40 to each other is as follows. It follows the communication protocols of Tables 9 to 10 of

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT







XX5 CF_OBC_Rdy


100ms


0 0 One








faucet module








BMS Ready (CAN communication inside the charger, control board preparation command) CF_OBC_Wrn One One Setting when a failure condition other than OBC failure occurs CF_OBC_Flt 2 One Fault (set when an OBC fault condition occurs) CF_OBC_CharMode 3 3 Charge all (CC/CV/CP) 4 CF_OBC_Connection 5 One charging connector connection CF_OBC_ChgFinished 6 One charging end
(Value : 1 exit) CF_OBC_PowerEnaStat 7 One Rechargeable readiness notification CR_OBC_FltCode One 8 0-255 charger error code
(diagnostic communication code) CR_OBC_Temp 2 16 40~120℃ charger internal temperature CR_OBC_Effi 3 24 0~110% charger efficiency CR_OBC_MaxPwr_W 4 32 50W standard max chargeable
power value CR_OBC_MaxCur_A 5 40 0~150A max chargeable
current value CR_OBC_MaxVolt_V 6 48 0-1100V max chargeable
voltage value 7 56

Here, XX5 is information transmitted by the power receiving module, and is data related to internal state information of the power receiving module and state information related to charging.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT



XX1 CF_BMS_RdyForOBC




100ms


0 0 One



BMS



faucet module Ready (in-vehicle CAN communication, ready command) CF_BMS_WrnForOBC One One Warning (set in case of failure other than BMS failure) CF_BMS_FaultForOBC 2 One Fault (set when a fault condition that cannot be charged occurs) CF_BMS_MainRlyOnStatForOBC 3 One High voltage relay on/off state when charging CF_BMS_PwrLmtForOBC 4 3 limited power
5 CF_BMS_AbnorChg 6 One Charging status (0: Normal,
1: Abnormal) CF_BMS_OBCChgFinishedForOBC 7 One charging completion status CR_BMS_SoForOBC_Pc One 8 5-90% Battery SOC(%) CR_BMS_CharRemainedTime_min 2 16 0~600
min
remaining charging time
(Remaining time for full charge) 3 24 CR_BMS_OBCcmdCur_A 4 32 0~150A
CC mode constant current value 5 40 CR_BMS_OBCCmdVolt_V 6 48 0-1100V
CV mode constant voltage value 7 56

Here, XX1 is information transmitted by the battery management system (BMS), and is data related to internal state information and charge-related state information of the battery management system (BMS).

However, the current technology for wirelessly charging a vehicle using a high voltage battery is the wireless power transmission device 1, the communication protocol 2 between the power transmission module and the power reception module, and the communication protocol between the power reception module and the battery management system (BMS). Only (3) is defined. That is, there is a problem in that there is no technology for an interface connecting the wireless power transmitter 1 and a user and a communication protocol defining wireless data communication between the wireless power transmitter 1 and the interface.

KR 2014-0061337 A

The present invention has been proposed to solve the above problems, and by combining a user interface with a wireless power transmission device, defining a communication protocol for operating it, and presenting a charging method using the interface of the wireless power transmission device, the user An object of the present invention is to provide an interface for a wireless power transmission device that easily charges a high-voltage battery vehicle.

In addition, the present invention combines a user interface to a wireless power transmission device, defines a communication protocol for operating it, and presents a charging method using the interface of the wireless power transmission device, thereby efficiently charging a high-power battery vehicle. Another purpose is to provide an interface of

In order to achieve the above object, a first embodiment of an interface of a wireless power transmission apparatus according to the present invention includes a power transmission module that transmits power and is installed outside the vehicle; a power receiving module that receives power from the power transmission module and is installed in a vehicle; and a user interface module for controlling the position of the vehicle, the power transmission module, and the power reception module so as to transmit power from the power transmission module to the power reception module. It may be characterized in that it includes.

In this case, the information transmitted from the power receiving module to the user interface module may be state information of the power receiving module and state information related to charging.

In particular, the information transmitted from the power receiving module to the user interface module may be characterized in that it follows a communication protocol according to the following table.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT
XX7 CF_RXWPT_RdyForOBC
100ms 0 0 One repair module user interface module Receiver module Ready status
(CAN communication inside the charger, control board preparation) CF_RXWPT_Charging One One charging indicator CF_RXWPT_Finish 2 One Charging complete indication CR_BMS_SoForOBC_Pc One 8 5-90% charge level display

In addition, the information transmitted from the user interface module to the power receiving module may be characterized in that the state information of the user interface module, charging-related commands, operation-related information of the matching auxiliary module, and charging-related setting information. In particular, the user Information transmitted from the interface module to the power receiving module may be characterized in that it follows the communication protocol according to the following table.

ID
data
Cycle
data state value
(example)

FROM
TO
Contents BYTE BIT


XX8 CF_Navi_Rdy

100ms

0 0 One

user interface module

faucet module





Navigator Ready status CF_Navi_ChgStart One One start charging button CF_Navi_ChgFinished 2 One charging complete button CF_Navi_PAS_LocMatch_Start 3 One Start PAS Position Compensation CF_Navi_PAS_LocMatch_End 4 One PAS Position Compensation Wan CR_WPT_Chr_Time
One 8 0~600min
Charging time setting
2 16 CR_WPT_Chr_Power
3 24 0~10kW
Charging power setting 4 32

In this case, the information transmitted from the power transmission module to the power receiving module includes communication status information of the power transmission module, vehicle information related commands of the power transmission module, charging related status information, charging related commands, BMS information related commands, power receiving module information related commands, power transmission It may be characterized as information of the module. In addition, the information transmitted from the power receiving module to the power transmitting module includes communication status information of the power receiving module, vehicle information related response of the power receiving module, charging related status information, BMS control related information, power receiving module output related information, vehicle and ID related information It can be characterized as being.

In addition, the user interface module displays the position of the transmission coil connected to the power transmission module to transmit power and the position of the reception coil connected to the power reception module to receive power, and guides the vehicle movement path, so that the user It may be characterized in that the transmission coil and the reception coil are matched by driving the vehicle.

In addition, the user interface module may be characterized in that it provides an initial screen for selecting charging by wireless power transmission and an execution screen for executing wireless power transmission.

In addition, the user interface module may be characterized in that the vehicle navigation device.

A second embodiment of the interface of the wireless power transmission device according to the present invention includes a power transmission module that transmits power and is installed outside the vehicle; a power receiving module that receives power from the power transmission module and is installed in a vehicle; a user interface module for controlling the position of the vehicle, the power transmission module, and the power reception module to transmit power from the power transmission module to the power reception module; and by moving the vehicle using location information of a transmission coil connected to the power transmission module and transmitting power and location information of a reception coil connected to the power reception module and receiving power, matching the transmission coil and the reception coil matching auxiliary module; It may be characterized in that it includes.

In this case, the information transmitted from the power receiving module to the user interface module may be state information of the power receiving module and state information related to charging.

In particular, the information transmitted from the power receiving module to the user interface module may be characterized in that it follows a communication protocol according to the following table.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT
XX7 CF_RXWPT_RdyForOBC
100ms 0 0 One repair module user interface module Receiver module Ready status
(CAN communication inside the charger, control board preparation) CF_RXWPT_Charging One One charging indicator CF_RXWPT_Finish 2 One Charging complete indication CR_BMS_SoForOBC_Pc One 8 5-90% charge level display

In addition, the information transmitted from the user interface module to the power receiving module may be characterized in that the state information of the user interface module, charging-related commands, operation-related information of the matching auxiliary module, and charging-related setting information. In particular, the user Information transmitted from the interface module to the power receiving module may be characterized in that it follows the communication protocol according to the following table.

ID
data
Cycle
data state value
(example)

FROM
TO
Contents BYTE BIT


XX8 CF_Navi_Rdy

100ms

0 0 One

user interface module

faucet module





Navigator Ready status CF_Navi_ChgStart One One start charging button CF_Navi_ChgFinished 2 One charging complete button CF_Navi_PAS_LocMatch_Start 3 One Start PAS Position Compensation CF_Navi_PAS_LocMatch_End 4 One PAS Position Compensation Wan CR_WPT_Chr_Time
One 8 0~600min
Charging time setting
2 16 CR_WPT_Chr_Power
3 24 0~10kW
Charging power setting 4 32

In addition, the information transmitted from the power receiving module to the matching auxiliary module may include status information of the power receiving module, charging progress status information, vehicle location related information, and vehicle movement related check information. In particular, from the power receiving module The information transmitted to the matching auxiliary module may be characterized in accordance with the communication protocol according to the following table.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XX9 CF_RXWPT_RdyForOBC

100ms

0 0 One

faucet module

Matching auxiliary module Receiver module Ready status
(CAN communication inside the charger, control board preparation) CF_RXWPT_Charging One One charging indicator CF_RXWPT_Finish 2 One Charging complete indication CR_RXWPT_Matching_1 One 8 0-50cm Vehicle Position Coordinate Correction
(front) CR_RXWPT_Matching_2 2 16 0-50cm Vehicle Position Coordinate Correction
(back) CR_RXWPT_Matching_3 3 24 0-50cm Vehicle Position Coordinate Correction
(left) CR_RXWPT_Matching_4 4 32 0-50cm Vehicle Position Coordinate Correction
(right) CR_Matching_info 5 40 3 Vehicle move ok/nok/remove

In addition, the information transmitted from the matching auxiliary module to the power receiving module may be characterized in that the matching auxiliary module status information, charging progress status information, vehicle location related commands and information, and vehicle movement status related information. The data transmitted from the matching auxiliary module to the power receiving module may be characterized in that it follows a communication protocol according to the following table.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XXA CF_PAS_Rdy

100ms

0 0 One

Matching auxiliary module

faucet module PAS Ready Status Information CF_PAS_ChgStart One One Charging start information CF_PAS_ChgFinished 2 One Charging complete information CR_PAS_LOC_Req 3 One Request for moving coordinates information CF_PAS_LocMatch_Start 4 One start moving vehicle CF_PAS_LocMatch_End 5 One stop vehicle movement

In this case, the information transmitted from the power transmission module to the power receiving module includes communication status information of the power transmission module, vehicle information related commands of the power transmission module, charging related status information, charging related commands, BMS information related commands, power receiving module information related commands, power transmission It may be characterized as information of the module. In addition, the information transmitted from the power receiving module to the power transmitting module includes communication status information of the power receiving module, vehicle information related response of the power receiving module, charging related status information, BMS control related information, power receiving module output related information, vehicle and ID related information It can be characterized as being.

In addition, the user interface module may be characterized in that it provides an initial screen for selecting charging by wireless power transmission and an execution screen for executing wireless power transmission.

In addition, the user interface module may be characterized in that the vehicle navigation device.

In addition, the matching auxiliary module may automatically move the vehicle so that the positions of the transmitting coil and the receiving coil are matched with each other.

Also, the matching assistance module may be a Parking Assistant System (PAS).

A third embodiment of the interface of the wireless power transmission device according to the present invention includes a power transmission module that transmits power and is installed outside the vehicle; a power receiving module that receives power from the power transmission module and is installed in a vehicle; a user interface module for controlling the position of the vehicle, the power transmission module, and the power reception module to transmit power from the power transmission module to the power reception module; By moving the vehicle using the location information of the transmission coil connected to the power transmission module and transmitting power and the location information of the reception coil connected to the power reception module and receiving power, the transmission coil and the reception coil are matched matching auxiliary module; And a display device for displaying the charging progress by the wireless power transmission device; It may be characterized in that it includes.

In addition, the information transmitted from the power receiving module to the user interface module may be characterized in that the status information and charging-related status information of the power receiving module.

In particular, the information transmitted from the power receiving module to the user interface module may be characterized in that it follows a communication protocol according to the following table.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT
XX7 CF_RXWPT_RdyForOBC
100ms 0 0 One repair module user interface module Receiver module Ready status
(CAN communication inside the charger, control board preparation) CF_RXWPT_Charging One One charging indicator CF_RXWPT_Finish 2 One Charging complete indication CR_BMS_SoForOBC_Pc One 8 5-90% charge level display

In addition, the information transmitted from the user interface module to the power receiving module may be characterized in that the state information of the user interface module, charging-related commands, operation-related information of the matching auxiliary module, and charging-related setting information. In particular, the user Information transmitted from the interface module to the power receiving module may be characterized in that it follows the communication protocol according to the following table.

ID
data
Cycle
data state value
(example)

FROM
TO
Contents BYTE BIT


XX8 CF_Navi_Rdy

100ms

0 0 One

user interface module

faucet module





Navigator Ready status CF_Navi_ChgStart One One start charging button CF_Navi_ChgFinished 2 One charging complete button CF_Navi_PAS_LocMatch_Start 3 One Start PAS Position Compensation CF_Navi_PAS_LocMatch_End 4 One PAS Position Compensation Wan CR_WPT_Chr_Time
One 8 0~600min
Charging time setting
2 16 CR_WPT_Chr_Power
3 24 0~10kW
Charging power setting 4 32

In addition, the information transmitted from the power receiving module to the matching auxiliary module may include status information of the power receiving module, charging progress status information, vehicle location related information, and vehicle movement related check information. In particular, from the power receiving module The information transmitted to the matching auxiliary module may be characterized in accordance with the communication protocol according to the following table.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XX9 CF_RXWPT_RdyForOBC

100ms

0 0 One

faucet module

Matching auxiliary module Receiver module Ready status
(CAN communication inside the charger, control board preparation) CF_RXWPT_Charging One One charging indicator CF_RXWPT_Finish 2 One Charging complete indication CR_RXWPT_Matching_1 One 8 0-50cm Vehicle Position Coordinate Correction
(front) CR_RXWPT_Matching_2 2 16 0-50cm Vehicle Position Coordinate Correction
(back) CR_RXWPT_Matching_3 3 24 0-50cm Vehicle Position Coordinate Correction
(left) CR_RXWPT_Matching_4 4 32 0-50cm Vehicle Position Coordinate Correction
(right) CR_Matching_info 5 40 3 Vehicle move ok/nok/remove

In addition, the information transmitted from the matching auxiliary module to the power receiving module may be characterized in that the matching auxiliary module status information, charging progress status information, vehicle location related commands and information, and vehicle movement status related information. The data transmitted from the matching auxiliary module to the power receiving module may be characterized in that it follows a communication protocol according to the following table.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XXA CF_PAS_Rdy

100ms

0 0 One

Matching auxiliary module

faucet module PAS Ready Status Information CF_PAS_ChgStart One One Charging start information CF_PAS_ChgFinished 2 One Charging complete information CR_PAS_LOC_Req 3 One Request for moving coordinates information CF_PAS_LocMatch_Start 4 One start moving vehicle CF_PAS_LocMatch_End 5 One stop vehicle movement

In addition, the information transmitted from the power receiving module to the display device may include charging progress status information and status information of the power receiving module and the power transmitting module. In particular, the information transmitted from the power receiving module to the display device may include: It may be characterized in accordance with the communication protocol according to the following table.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT
XXB CF_RXWPT_Charging 100ms
0
0 One faucet module display charging indicator CF_RXWPT_Finish One One Charging complete indication

In this case, the information transmitted from the power transmission module to the power receiving module includes communication status information of the power transmission module, vehicle information related commands of the power transmission module, charging related status information, charging related commands, BMS information related commands, power receiving module information related commands, power transmission It may be characterized as information of the module. In addition, the information transmitted from the power receiving module to the power transmitting module includes communication status information of the power receiving module, vehicle information related response of the power receiving module, charging related status information, BMS control related information, power receiving module output related information, vehicle and ID related information It can be characterized as being.

In addition, the user interface module may be characterized in that it provides an initial screen for selecting charging by wireless power transmission and an execution screen for executing wireless power transmission.

In addition, the user interface module may be characterized in that the vehicle navigation device.

In this case, the matching auxiliary module may automatically move the vehicle so that the positions of the transmitting coil and the receiving coil are matched with each other.

Also, the matching assistance module may be a Parking Assistant System (PAS).

Also, the display device may be a cluster.

An embodiment of a method for charging a vehicle through an interface of a wireless power transmission device according to the present invention includes: a charging request input step in which a user interface module receives a charging request for the vehicle; a coil matching step of matching the transmitting coil and the receiving coil by moving the vehicle using the position of the transmitting coil installed outside the vehicle and the position of the receiving coil installed in the vehicle; a charging start step in which the user interface module receives a charging start request for the vehicle; and a charging completion step in which charging of the vehicle is completed; may include

In addition, in the coil matching step, the matching auxiliary module moves the vehicle using the location information of the transmitting coil and the location information of the receiving coil to match the transmitting coil and the receiving coil or the user interface module The position of the transmission coil and the position of the reception coil may be displayed, and a movement path of the vehicle in which the reception coil is installed may be guided so that the transmission coil and the reception coil match each other.

Also, in the coil matching step, the position of the transmission coil may be automatically input by the matching auxiliary module or manually input by the user interface module.

In addition, the coil matching step may include: a power receiving module status checking step in which the matching auxiliary module receives status information of the power receiving module from the power receiving module; a vehicle location checking step in which the matching auxiliary module receives the location of the vehicle from the power receiving module; a vehicle moving step in which the vehicle is moved; a matching position determination step in which the matching auxiliary module receives the position of the moving vehicle from the power receiving module and determines whether the position of the vehicle is a position in which the transmitting coil and the receiving coil match; and a matching completion step of stopping the movement of the vehicle when the location of the vehicle is a location where the transmission coil and the reception coil match; may include

In addition, in the matching position determination step, when the location of the vehicle is not a location where the transmission coil and the reception coil match, the vehicle moving step may be performed again.

In addition, before the charging start step, the user interface module charging power setting step of receiving the charging power or charging time for the vehicle; It may be characterized in that it further comprises.

Also, in the charging completion step, the user interface module may be characterized in that it receives a charging completion request for the vehicle.

According to the wireless power transmission device for a vehicle according to the present invention, the user can easily charge the vehicle.

In addition, according to the wireless power transmission device for a vehicle according to the present invention, it is possible to efficiently charge the vehicle by increasing the transmission efficiency of the receiving coil and the transmitting coil.

1 is a conceptual diagram showing a wireless power transmission device according to the prior art.
2 is a block diagram showing a wireless power transmission apparatus according to the prior art.
3 is a block diagram illustrating data transmission/reception between a power transmission module, a power reception module, and a BMS according to the prior art;
4 is a block diagram showing a first embodiment of an interface of a wireless power transmission apparatus according to the present invention.
5 is a block diagram showing a second embodiment of an interface of a wireless power transmitter according to the present invention.
6 is a block diagram illustrating a third embodiment of an interface of a wireless power transmitter according to the present invention.
7 is a block diagram illustrating data transmission/reception between a power reception module, a user interface module, a matching auxiliary device, and a display device according to the present invention;
8 is a conceptual diagram illustrating a method of charging a vehicle through an interface of a wireless power transmission device according to the present invention.
9 is a block diagram illustrating an embodiment of a method for charging a vehicle through an interface of a wireless power transmission device according to the present invention.

It should be noted that the technical terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. In addition, the technical terms used in this specification should be interpreted in the meaning generally understood by those of ordinary skill in the technical field disclosed in this specification, unless otherwise defined in this specification, and are overly inclusive. or should not be construed in an excessively reduced meaning. In addition, the accompanying drawings are only for easy understanding of the spirit of the technology disclosed in this specification, and the spirit of the technology is not limited by the accompanying drawings, and is included in the spirit and scope of the technology disclosed in this specification. It is to be understood as including all modifications, equivalents or substitutes made.

Hereinafter, a first embodiment of the interface of the wireless power transmission device for a vehicle according to the present invention will be described in more detail with reference to the accompanying drawings.

4 is a block diagram showing a first embodiment of an interface of a wireless power transmission device according to the present invention, and FIG. 7 is a block showing data transmission/reception between a power receiving module, a user interface module, a matching auxiliary device, and a display device according to the present invention It is also

4 and 7 , the first embodiment of the interface of the wireless power transmitter according to the present invention may include a power transmission module 10 , a power reception module 30 , and a user interface module 110 .

The power transmission module 10 transmits power and is installed outside the vehicle.

The power receiving module 30 receives power from the power transmission module 10 and is installed in the vehicle.

The user interface module 110 controls the location of the vehicle, the power transmission module, and the power reception module to transmit power from the power transmission module to the power reception module. That is, the user interface module 110 provides an interface between the power receiving module 30 and a user.

More specifically, the user interface module 110 determines the position of the transmission coil 21 connected to the power transmission module to transmit power and the position of the reception coil 22 connected to the power reception module to receive power. By displaying and guiding the moving path of the vehicle, the user can drive the vehicle to match the transmitting coil and the receiving coil. That is, the user interface module 110 can guide the user to move the vehicle and match the receiving coil 22 with the transmitting coil 21 by displaying the moving path of the vehicle. The user interface module 110 may be useful when the matching auxiliary module 120 to be described below is not included, and may be used in parallel with the matching auxiliary module 120 . Also, the user interface module 110 may provide an initial screen for selecting charging by wireless power transmission and an execution screen for executing wireless power transmission.

Here, the user interface module 110 may be a device capable of data communication with the power receiving module 30 , and in particular, a vehicle navigation device.

In particular, the user interface module 110 can perform data communication so that a user can control the power receiving module 30 to charge a vehicle requiring electric charging or a high voltage battery vehicle. At this time, the user interface module 110 receives, from the power receiving module 30, charging status or charging progress status information such as power receiving module status information, charging amount/charging time/charging power information, and charging related commands/responses. can do. In addition, the user interface module 110 transmits a command or response such as state information of the user interface module, a charging start/complete command, charging time setting/charging amount setting/charging power setting, etc. to the power receiving module 30. can

More specifically, the user interface module 110 may perform data communication with the power receiving module 30 according to the communication protocol according to Tables 22 to 23.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT
XX7 CF_RXWPT_RdyForOBC
100ms 0 0 One repair module user interface module Receiver module Ready status
(CAN communication inside the charger, control board preparation) CF_RXWPT_Charging One One charging indicator CF_RXWPT_Finish 2 One Charging complete indication CR_BMS_SoForOBC_Pc One 8 5-90% charge level display

Here, XX7 is information transmitted by the power receiving module 30 to the user interface module 110, and is data related to status information of the power receiving module, charging related status information, and the like.

ID
data
Cycle
data state value
(example)

FROM
TO
Contents BYTE BIT


XX8 CF_Navi_Rdy

100ms

0 0 One

user interface module

faucet module





Navigator Ready status CF_Navi_ChgStart One One start charging button CF_Navi_ChgFinished 2 One charging complete button CF_Navi_PAS_LocMatch_Start 3 One Start PAS Position Compensation CF_Navi_PAS_LocMatch_End 4 One PAS Position Compensation Wan CR_WPT_Chr_Time
One 8 0~600min
Charging time setting
2 16 CR_WPT_Chr_Power
3 24 0~10kW
Charging power setting 4 32

Here, XX8 is information transmitted by the user interface module 110 to the power reception module 30, and is information on the charging progress of the user interface module, charging related commands, operation progress information of the matching auxiliary module, charging time and power setting information. data about, etc. When the interface of the wireless power transmission device according to the present invention includes only the user interface module 110, parking assistant system (PAS) related data corresponding to the matching assistant module 120 in XX8 is not used. or may be deleted. On the other hand, when the wireless power transfer interface according to the present invention includes another interface or the user interface module 110 performs more functions, data as needed may be added to the XX7 and XX8.

Among the communication protocols according to the present invention, data provided by the power transmission module 10 to the power reception module 30 follows Tables 1 to 4 in the same manner as in the conventional communication protocol. In addition, among the communication protocols according to the present invention, data provided by the power receiving module 30 to the power transmission module follows Tables 5 to 8 in the same manner as in the conventional communication protocol. In addition, among the communication protocols according to the present invention, the data provided by the power reception module 30 and the battery management system (BMS) 40 to each other follows Tables 9 to 10 in the same way as the conventional communication protocol in terms of content. However, in order to easily classify the power receiving module 30 and the counterpart module performing data communication, XX5 and XX1, which are data IDs provided by the power receiving module 30 and the battery management system (BMS) 40 to each other, are respectively Change to XX5 and XX6. Here, the information transmitted from the power transmission module 10 to the power reception module 30 includes communication status information of the power transmission module, vehicle information related commands of the power transmission module, charging related status information, charging related commands, BMS information related commands, It may be a command related to power reception module information or information of a power transmission module. In addition, the information transmitted from the power receiving module 30 to the power transmitting module 10 includes communication status information of the power receiving module, vehicle information related response of the power receiving module, charging related status information, BMS control related information, and power receiving module output related information , vehicle and ID related information.

Hereinafter, a second embodiment of the interface of the wireless power transmission device for a vehicle according to the present invention will be described in more detail with reference to the accompanying drawings.

5 is a block diagram showing a second embodiment of an interface of a wireless power transmitter according to the present invention, and FIG. 7 is a block showing data transmission/reception between a power receiving module, a user interface module, a matching auxiliary device, and a display device according to the present invention It is also

5 and 7 , the second embodiment of the interface of the wireless power transmission apparatus according to the present invention may include a power reception module 30 , a user interface module 110 , and a matching auxiliary module 120 . In particular, in the second embodiment of the interface of the wireless power transmission device according to the present invention, the power receiving module 30 and the user interface module 110 of the first embodiment are the same, but the matching auxiliary module 120 is different. That is, in the present embodiment, the matching auxiliary module 120 is further included as an interface between the power reception module 30 and the user. Among the configurations of the present embodiment, reference numerals in FIG. 4 are used for the same configurations as those of the first embodiment according to the present invention, and a detailed description thereof will be omitted.

The matching auxiliary module 120 includes location information of a transmission coil 21 connected to the power transmission module 10 to transmit power and a reception coil 22 connected to the power reception module 30 to receive power. By moving the vehicle 60 using the location information, the transmitting coil 21 and the receiving coil 22 can be matched. That is, the matching auxiliary module 120 moves the vehicle 60 in which the receiving coil 22 is installed in order to charge the high voltage battery of the vehicle 60 , thereby moving the receiving coil 22 to the outside of the vehicle. It is to match the transmission coil 21 installed in the. At this time, in order to efficiently charge the vehicle 60 equipped with the high voltage battery, etc., the transmitting coil 21 and the receiving coil 22 must be precisely matched. Because, as shown in FIG. 1, the transmitting coil 21 occupies a certain area on the ground, and by moving the vehicle 60 appropriately, the receiving coil 22 installed in the vehicle is exactly the same as the transmitting coil 21 on the ground. This is because the power transmission efficiency of the wireless power transmission device 1 increases as the matching increases.

Also, the matching auxiliary module 120 may automatically move the vehicle 60 so that the positions of the transmitting coil 21 and the receiving coil 22 are matched with each other. Here, the matching assisting module 120 may be a device capable of data communication with the power receiving module 30 while controlling the movement of the vehicle, and in particular, a Parking Assistant System (PAS). can

In particular, the matching auxiliary module 120 may receive, from the power receiving module 30 , a command/response, such as power receiving module status information, charging related status information, vehicle location related information, or vehicle movement coordinates information. In addition, the matching auxiliary module 120 transmits commands/responses such as matching auxiliary module status information, charging related status information, vehicle location related status information, and vehicle movement progress status information to the power receiving module 30. can

More specifically, the matching auxiliary module 120 may perform data communication with the power receiving module 30 according to the communication protocol according to Tables 24 to 25.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XX9 CF_RXWPT_RdyForOBC

100ms

0 0 One

faucet module

PAS Receiver module Ready status
(CAN communication inside the charger, control board preparation) CF_RXWPT_Charging One One charging indicator CF_RXWPT_Finish 2 One Charging complete indication CR_RXWPT_Matching_1 One 8 0-50cm Vehicle Position Coordinate Correction
(front) CR_RXWPT_Matching_2 2 16 0-50cm Vehicle Position Coordinate Correction
(back) CR_RXWPT_Matching_3 3 24 0-50cm Vehicle Position Coordinate Correction
(left) CR_RXWPT_Matching_4 4 32 0-50cm Vehicle Position Coordinate Correction
(right) CR_Matching_info 5 40 3 Vehicle move ok/nok/remove

Here, XX9 is information transmitted by the power receiving module 30, and is data related to the status information of the power receiving module, charging progress status information, vehicle location movement coordinate information, check information when moving the vehicle, and the like.

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT


XXA CF_PAS_Rdy

100ms

0 0 One

PAS

faucet module PAS Ready Status Information CF_PAS_ChgStart One One Charging start information CF_PAS_ChgFinished 2 One Charging complete information CR_PAS_LOC_Req 3 One Request for moving coordinates information CF_PAS_LocMatch_Start 4 One start moving vehicle CF_PAS_LocMatch_End 5 One stop vehicle movement

Here, XXA is information transmitted by the matching auxiliary module 120, and is data related to status information of the matching auxiliary module, charging progress information, vehicle movement coordinate information request, vehicle movement progress state information, and the like. In addition, when the wireless power transmission interface according to the present invention includes another interface or the matching auxiliary module 120 performs more functions, data as needed may be added to the XX9 and XXA. Since the power receiving module 30 and the user interface module 110 are substantially the same as the first embodiment of the interface of the wireless power transmission device for a vehicle according to the present invention, a detailed description thereof will be omitted.

Hereinafter, a third embodiment of the interface of the wireless power transmission device for a vehicle according to the present invention will be described in more detail with reference to the accompanying drawings.

6 is a block diagram showing a third embodiment of an interface of a wireless power transmission device according to the present invention, and FIG. 7 is a block showing data transmission/reception between a power receiving module, a user interface module, a matching auxiliary device, and a display device according to the present invention It is also

6 and 7 , a third embodiment of the interface of the wireless power transmission device according to the present invention is a power receiving module 30 , a user interface module 110 , a matching auxiliary module 120 , and a display device 130 . may include In particular, in the third embodiment of the interface of the wireless power transmission device according to the present invention, the power receiving module 30, the user interface module 110, and the matching auxiliary module 120 of the second embodiment are the same, but the display device ( 130) are different. Among the configurations of the present embodiment, the reference numerals in FIG. 5 are referenced for the same configurations as those of the second embodiment according to the present invention, and a detailed description thereof will be omitted.

The display device 130 may display a charging progress state by the wireless power transmission device. Here, the display device 130 may be a device capable of displaying charging or charging completion, in particular a cluster.

In particular, when charging is started by the user interface module 110 , the display device 130 may display the amount of charging by the wireless power transmission device, the charging progress state, and whether or not charging is complete. In this case, the display device 130 may receive the charging state or charging progress information from the power receiving module 30 , and a part of the function of the user interface module 110 , for example, charging start/charging. It is possible to transmit commands/responses, such as time setting/charging amount setting/charging power setting, charging, etc.

In more detail, the display device 130 may perform data communication with the power receiving module 30 according to a communication protocol according to Table 26 .

ID
data
Cycle data state value
(example)
FROM
TO
Contents BYTE BIT
XXB CF_RXWPT_Charging 100ms
0
0 One faucet module CLUSTER charging indicator CF_RXWPT_Finish One One Charging complete indication

Here, XXA is information transmitted by the power receiving module, and is data related to charging progress status information and the like. In addition, when the wireless power transmission interface according to the present invention includes another interface or the display device 130 performs more functions, data as needed may be added to the XXB. The power receiving module 30 ), the user interface module 110 and the matching auxiliary module 120 are substantially the same as the second embodiment of the interface of the wireless power transmission device for a vehicle according to the present invention described above, and thus a detailed description thereof will be omitted.

Hereinafter, a method of charging a vehicle through an interface of a wireless power transmission device according to the present invention will be described in more detail with reference to the accompanying drawings.

8 is a conceptual diagram illustrating a method for charging a vehicle through an interface of a wireless power transmission device according to the present invention, and FIG. 9 is a block showing an embodiment of a method for charging a vehicle through an interface of a wireless power transmission device according to the present invention It is also

8 and 9 , an embodiment of a method for charging a vehicle through an interface of a wireless power transmission device according to the present invention includes a charging request input step (S100), a coil matching step (S200), a charging power setting step (S300), a charging start step (S400) and a charging completion step (S500) may include.

In the charging request input step ( S100 ), the user interface module 110 receives a charging request for the vehicle. That is, in the charging request input step ( S100 ), the user may input a charging request for the vehicle through the user interface module 110 . When the interface module 110 receives a user's charging request, a process for charging a vehicle including a high voltage battery or the like described below may proceed. In the charging request input step ( S100 ), data communication may be performed according to the communication protocols XX7 and XX8 of Tables 22 and 23 above.

In the coil matching step (S200), the transmission coil is moved by moving the vehicle 60 using the location information of the transmission coil 21 installed outside the vehicle and the location information of the reception coil 22 installed in the vehicle. (21) and the receiving coil (22) are matched. More specifically, in the coil matching step (S200), the matching auxiliary module 120 uses the location of the transmitting coil 21 installed on the ground and the location of the receiving coil 22 installed in the vehicle to the vehicle 60 ), the transmitting coil 21 and the receiving coil 22 can be matched. In addition, in the coil matching step ( S200 ), the user interface module 110 displays the position of the transmitting coil 21 and the position of the receiving coil 22 , and guides the vehicle movement path, so that the user can use the vehicle may be operated to match the transmitting coil 21 and the receiving coil 22 . Here, the position of the transmission coil 21 may be automatically input by the matching auxiliary module 120 or may be manually input by the user interface module 110 . Here, in the coil matching step (S200), data communication may be performed according to the communication protocols XX7, XX8, XX9 and XXA of Tables 22 to 25.

In more detail, the coil matching step (S200) includes a power reception module status check step (S210), a vehicle location check step (S220), a vehicle moving step (S230), a matching location determination step (S240), and a matching completion step ( S250) may be included. Here, in the power receiving module status checking step (S210), vehicle location checking step (S220), vehicle moving step (S230), matching location determination step (S240) and matching completion step (S250), Data communication can be performed according to the communication protocols XX7, XX8, XX9 and XXA.

In the power receiving module status check step ( S210 ), the matching auxiliary module 120 receives the status information of the power receiving module from the power receiving module 30 . That is, in the power receiving module state checking step (S210), the charging preparation state of the power receiving module 30 can be checked.

In the vehicle location check step (S220), the matching auxiliary module 120 receives the location of the vehicle from the power receiving module (30). More specifically, in the vehicle location checking step (S220), the matching auxiliary module 120 receives the location coordinates of the front, rear, left and right of the vehicle from the power receiving module 30, and the current vehicle 60 It is possible to specify the position of and the position of the receiving coil 22 installed in the vehicle 60 .

In the vehicle moving step ( S230 ), the vehicle is moved. More specifically, in the vehicle moving step ( S230 ), the matching auxiliary module 120 may move the vehicle using the location information of the transmitting coil 21 and the location information of the receiving coil 22 . have. In addition, in the vehicle moving step ( S230 ), the user interface module 110 displays the position of the transmission coil 21 and the position of the receiving coil 22 and guides the vehicle movement path, so that the user You should be able to move the vehicle. Here, the position of the transmission coil 21 may be automatically input by the matching auxiliary module 120 or may be manually input by the user interface module 110 .

In the matching position determination step (S240), the matching auxiliary module 120 receives the position of the moving vehicle from the power receiving module 30, and the position of the vehicle 60 is determined with the transmission coil 10 It is determined whether the receiving coil 30 is a matching position. More specifically, in the matching position determination step (S240), the matching auxiliary module 120 collates the position of the transmitting coil 10 installed outside the vehicle and the receiving coil 30 installed in the moving vehicle. Accordingly, it is possible to determine whether the transmission coil 10 and the reception coil 30 match each other and the degree of matching. In addition, in the matching position determining step ( S240 ), the position of the transmitting coil 10 and the position of the receiving coil 30 installed in the vehicle moving according to the vehicle movement path guidance of the user interface module 110 are compared. It is also possible to determine whether the transmission coil 10 and the reception coil 30 match and the degree of matching. In the matching position determination step (S240), the matching position determination may be determined based on whether or not the transmission coil 10 and the reception coil 30 match and the degree of matching, in particular, the transmission coil 10 and A condition in which the receiving coil 30 matches 90% or more may be used as a reference.

In the matching completion step (S250), when the position of the vehicle 60 is the position where the transmitting coil 21 and the receiving coil 22 match, the movement of the vehicle is stopped. That is, in the matching completion step ( S250 ), after the transmitting coil 21 and the receiving coil 22 are matched, the vehicle may be stopped to charge the vehicle 60 .

In the charging power setting step (S300), the user interface module 110 receives the charging power or charging time for the vehicle. That is, in the charging power setting step ( S300 ), the user can input the amount of charging, ie, charging power and charging time, for charging the vehicle through the user interface module 110 . The charging power setting step (S300) may not be performed as needed, but in this embodiment, the charging power setting step (S300) is included. Here, in the charging power setting step ( S300 ), data communication may be performed according to the communication protocols XX7 and XX8 of Tables 22 and 23 above.

In the charging start step ( S400 ), the user interface module 110 receives a charging start request for the vehicle. That is, in the charging start step (S400), the user can input the charging start for the vehicle through the user interface module (110). Here, in the charging start step (S400), data communication may be performed according to the communication protocols XX7, XX8, XX9 and XXA of Tables 22 to 25.

In the charging completion step ( S500 ), charging of the vehicle 60 is completed. More specifically, in the charging completion step ( S500 ), when the vehicle 60 is fully charged, charging of the vehicle may be completed. Also, in the charging completion step ( S500 ), the user interface module 110 may receive a charging completion request for the vehicle. That is, in the charging completion step ( S500 ), the user can arbitrarily input the charging completion for the vehicle through the user interface module 110 . Thus, the user can complete the charging of the vehicle at any time. Here, in the charging completion step (S500), data communication may be performed according to the communication protocols XX7, XX8, XX9 and XXA of Tables 22 to 25.

In any of the above steps, data communication may be performed according to the communication protocol XXB of Table 26. Also, in any of the above steps, data communication may be performed according to the communication protocols of Tables 1 to 10 and Tables 22 to 26, if necessary.

As described above, within the scope of the basic technical idea of the present invention, many other modifications are possible for those of ordinary skill in the art, and the scope of the present invention is based on the appended claims. will have to be interpreted.

1: Wireless power transmission device for vehicle
2: Communication protocol between power transmission module and power reception module
3: Communication protocol between power reception module and battery management system (BMS)
10: power transmission module
20: transmit/receive pickup coil
21: transmit coil 22: receive coil
30: power receiving module
40: battery management system
50: power supply 60: vehicle
100: interface between the faucet module and the user
110: user interface module
120: matching auxiliary module
130: display device

Claims (11)

In the interface of the vehicle wireless power transmission device installed in the vehicle,
a power receiving module for receiving power from a power transmitting module installed outside the vehicle;
In order to transmit power from the power transmission module to the power reception module, at least one of the location of the vehicle, the power transmission module, and the power reception module is controlled, and a screen for selecting charging by wireless power transmission and wireless power transmission can be executed. A user interface module that provides a screen; and
A display device for generating a charging start command according to a user input,
The power receiving module is
Receive power from the power transmission module before a preset charging time according to the charging start command input through the display device,
Receiving power, communication state set-up, and information indicating normal and standby states of the power transmission module from the power transmission module,
receiving the power from the power transmission module according to a charging time set by a user interface module installed in the vehicle;
In response to the charging start command generated through the user interface displayed by the display device, the power is received from the power transmission module before the set charging time,
An interface of a wireless power transmission device that receives status information of the power transmission module from the power transmission module to display the status of the power transmission module.
The method of claim 1,
The interface of the wireless power transmission device, characterized in that the information transmitted from the power receiving module to the user interface module is state information and charging-related status information of the power receiving module.
The method of claim 1,
The interface of the wireless power transmission device, characterized in that the information transmitted from the user interface module to the power receiving module is state information of the user interface module, a charge-related command, and charge-related setting information.
The method of claim 1,
The user interface module is
By displaying the position of the transmission coil connected to the power transmission module to transmit power and the position of the reception coil connected to the power reception module to receive power and guiding the vehicle movement path, the user operates the vehicle and The interface of the wireless power transmission device, characterized in that to match the receiving coil.
According to claim 1,
The user interface module,
a button for starting wireless charging and completing wireless charging;
When a command related to the completion of the wireless charging is received through the button, the interface of the wireless power transmission device will terminate the charging before the vehicle is fully charged.
The method of claim 1,
By moving the vehicle using the location information of the transmission coil connected to the power transmission module and transmitting power and the location information of the reception coil connected to the power reception module and receiving power, the transmission coil and the reception coil are matched Parking Assistant System
The interface of the wireless power transmission device, characterized in that it further comprises.
7. The method of claim 6,
The information transmitted from the power receiving module to the parking assistance system is an interface of a wireless power transmission device, characterized in that the status information of the power receiving module, charging progress status information, vehicle location related information, and vehicle movement related check information.
7. The method of claim 6,
The information transmitted from the parking assistance system to the power receiving module is state information of the matching auxiliary module, charging progress information, vehicle location related commands and information, and vehicle movement progress status related information.
7. The method of claim 6,
The parking assistance system is
The interface of the wireless power transmission device, characterized in that the vehicle is automatically moved so that the positions of the transmitting coil and the receiving coil are matched with each other.
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