KR20200088246A - Interface for wireless power transmission device - Google Patents

Abstract

An objective of the present invention is to provide an interface for a wireless power transmission device which allows a user to easily charge a high-voltage battery vehicle. According to the present invention, the power transmission device installed on a vehicle to charge the vehicle comprises: a user interface module to input set charging time; a display device to display a user interface to input a charging start request; and a power reception module to transmit a charging start command for charging the vehicle to a power transmission module installed outside the vehicle at a preset charging time if the preset charging time is inputted from the user interface module, and transmit the charging start command to the power transmission module before the preset charging time if the charging start request is inputted from the display device. The power reception module receives communication state setting information, information representing a standby state of the power transmission module, and information representing a normal state of the power transmission module from the power transmission module to start charging the vehicle, and transmits information representing a charging startable state and a state value of the power reception module to the power transmission module. The display device displays charging progress state information including a full charging comparison remaining time and state information of the power reception module and the power transmission module.

Description

Interface of wireless power transmission device {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, to provide 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. The present invention relates to an interface of a wireless power transmission device for easily charging a high voltage battery vehicle and a charging method using the same.

Currently, automobile manufacturers in each country are developing vehicles using high-voltage batteries, and accordingly various technologies for charging vehicles using the high-voltage batteries have been studied. In particular, the 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, which has been discussed internationally, is currently being researched 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. 3 is data transmission/reception between a transmission module, a power receiving module and a BMS according to the prior art It is a block diagram showing.

1 to 3, the wireless power transmission device 1 for a vehicle receives a 220 V AC voltage from the ground and transmits the transmission module 10 for switching the transmission coil, and transmits the energy of the transmission module to the power receiving module through resonance. / Receiving pick-up coil 20, a power receiving module for switching the received energy to the vehicle's high voltage battery 30 and a battery management system (BMS: Battery Management System) (40).

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

More specifically, in 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 is described in Table 1 to Table 4 below. Follow.

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


XX1 CF_COMMUCATION_SET

100 ms
0
0 One

Transmission module

Faucet module Communication status setup
(Communication start) CF_POLLING STATE One One Message for periodic power receiving 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 regarding a communication state between the power transmission module and the power reception module, a power reception module confirmation message, and vehicle information.

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


XX2 CF_CONTROL_START

100 ms 0 0 One

Transmission module

Faucet module Wireless charging start CR_TX_STATE One 8 0-4 0: Normal, 1: Abnormal,
2: Standby, 3: Power transmission
4: Transmission module status value transmission CR_RX_STATE 2 16 0-4 0: Normal, 1: Abnormal,
2: Standby, 3: Power transmission
4: Transmission module status value request 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 regarding charging progress status information and the like.

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


XX3 BMS_INFO_REQ

100 ms 0 0 One

Transmission module

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

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

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

XX4 CR_TX_AC_VOL

100 ms 0 0 0~500

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. In addition, in 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 in Tables 5 to 8 below.

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


XX1 CF_CONTROLLABLE

100 ms
0 0 One

Faucet module

Transmission module Wireless charging start status information message CF_COMMUNICATION_OK One One Communication status 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: Transmission module status value transmission CR_RX_STATE 2 16 0-4 0: Normal, 1: Abnormal
2; Standby, 3: Power transmission
4: Transmission module status value transmission CR_TX_FAULT 4 32 1111 Transmission module fault status message CR_RX_FAULT 6 48 1011 Faucet module fault status message

Here, XX1 is information transmitted by the power receiving module, and is data regarding a communication state between the power transmitting module and the power receiving module.

ID
data
Cycle data Status value
(example)
FROM
TO
Contents BYTE BIT
XX2 BMS_CUR_INFOR
100 ms 0 8 0~20
Faucet module
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.

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

XX3 CR_RX_DC_VOL
100 ms One 8 0~500

Faucet module

Transmission module Power module output voltage message CR_RX_DC_CUR 2 16 0~50 Faucet module output current message CR_RX_TEMP 4 32 -40~150 Faucet module temperature message

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

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

XX4 CR_ID_CHK
100 ms 2 16 ABCDE

Faucet module

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 identification.

The power receiving module 30 mounted on the lower portion of the vehicle and the battery management system (BMS) 40 exchange information related to the state of charge, voltage, current, and command value and stably perform the charging operation.

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

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







XX5 CF_OBC_Rdy


100 ms


0 0 One








Faucet module








BMS Ready (internal communication with charger, command to prepare control board) CF_OBC_Wrn One One Set in case of failure situation other than OBC failure CF_OBC_Flt 2 One Fault (set when OBC fault occurs) CF_OBC_CharMode 3 3 Charging All (CC/CV/CP) 4 CF_OBC_Connection 5 One Charging connector CF_OBC_ChgFinished 6 One Charging end
(Value: 1 end) CF_OBC_PowerEnaStat 7 One Charging ready 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 the internal state information of the power receiving module and charging related state information.

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



XX1 CF_BMS_RdyForOBC




100 ms


0 0 One



BMS



Faucet module Ready (In-vehicle CAN communication, ready command) CF_BMS_WrnForOBC One One Warning (set when a failure situation other than BMS failure occurs) 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 Floor power limit
5 CF_BMS_AbnorChg 6 One Charge state (0: Normal,
1: Abnormal) CF_BMS_OBCChgFinishedForOBC 7 One Charging complete state CR_BMS_SoForOBC_Pc One 8 5~90% Battery SOC(%) CR_BMS_CharRemainedTime_min 2 16 0~600
min
Charging remaining time
(Remaining time compared to full) 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 status information of the battery management system (BMS), charging-related status information, and the like.

By the way, the technology for wirelessly charging a vehicle using a high voltage battery is the wireless power transmission device 1, a communication protocol 2 between the power transmission module and the power receiving module, and a communication protocol between the power receiving 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 transmission device 1 and a user and a communication protocol defining wireless data communication between the wireless power transmission device 1 and the interface.

KR 2014-0061337 A

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

In addition, the present invention combines a user interface with a wireless power transmission device, defines a communication protocol for operating the same, and presents a charging method by the interface of the wireless power transmission device, thereby efficiently charging a high power battery vehicle. Another purpose is to provide the 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 transmission module that transmits power and is installed outside of a vehicle; A power receiving module that receives power from the power transmitting module and is installed in a vehicle; And a user interface module that controls the position of the vehicle, the power transmission module, and the power receiving module to transmit power from the power transmission module to the power receiving module. It may be characterized by including.

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

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

ID
data
Cycle data Status value
(example)
FROM
TO
Contents BYTE BIT
XX7 CF_RXWPT_RdyForOBC
100 ms 0 0 One Repair module User interface module Receiving 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 by status 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 The information transmitted from the interface module to the power receiving module may be characterized by following the communication protocol according to the following table.

ID
data
Cycle
data Status value
(example)

FROM
TO
Contents BYTE BIT


XX8 CF_Navi_Rdy

100 ms

0 0 One

User interface module

Faucet module





Navigator ready CF_Navi_ChgStart One One Charging start button CF_Navi_ChgFinished 2 One Charging complete button CF_Navi_PAS_LocMatch_Start 3 One Start PAS position calibration CF_Navi_PAS_LocMatch_End 4 One PAS position correction complete 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

At this time, 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 module information related commands, power transmission It can be characterized as being 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 by being.

In addition, the user interface module is connected to the transmission module to display the location of the transmission coil for transmitting power and the location of the receiving coil connected to the power receiving module to receive power, and guiding the vehicle movement path, so that the user The vehicle may be operated to match the transmission coil and the reception coil.

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 performing wireless power transmission.

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

A second embodiment of the interface of the wireless power transmission apparatus according to the present invention includes: a transmission module that transmits power and is installed outside the vehicle; A power receiving module that receives power from the power transmitting module and is installed in a vehicle; A user interface module that controls the position of the vehicle, the power transmission module, and the power receiving module to transmit power from the power transmission module to the power receiving module; And matching the transmission coil and the reception coil by moving the vehicle using location information of a transmission coil connected to the transmission module to transmit power and location information of a reception coil connected to the power reception module to receive power. Matching matching module; It may be characterized by including.

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

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

ID
data
Cycle data Status value
(example)
FROM
TO
Contents BYTE BIT
XX7 CF_RXWPT_RdyForOBC
100 ms 0 0 One Repair module User interface module Receiving 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 by status 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 The information transmitted from the interface module to the power receiving module may be characterized by following the communication protocol according to the following table.

ID
data
Cycle
data Status value
(example)

FROM
TO
Contents BYTE BIT


XX8 CF_Navi_Rdy

100 ms

0 0 One

User interface module

Faucet module





Navigator ready CF_Navi_ChgStart One One Charging start button CF_Navi_ChgFinished 2 One Charging complete button CF_Navi_PAS_LocMatch_Start 3 One Start PAS position calibration CF_Navi_PAS_LocMatch_End 4 One PAS position correction complete 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 be characterized by 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 by following the communication protocol according to the following table.

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


XX9 CF_RXWPT_RdyForOBC

100 ms

0 0 One

Faucet module

Matching auxiliary module Receiving 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
(rear) 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 by status information of the matching auxiliary module, charging progress status information, vehicle position-related commands and information, and vehicle movement progress status information. Data transmitted from the matching auxiliary module to the power receiving module may be characterized by following a communication protocol according to the following table.

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


XXA CF_PAS_Rdy

100 ms

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 moving coordinate information CF_PAS_LocMatch_Start 4 One Vehicle start moving CF_PAS_LocMatch_End 5 One Vehicle moving stop

At this time, 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 module information related commands, power transmission It can be characterized as being 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 by 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 performing wireless power transmission.

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

In addition, the matching auxiliary module may be characterized in that the vehicle automatically moves such that the positions of the transmitting coil and the receiving coil match each other.

In addition, the matching assistance module may be characterized in that it is a parking assistance system (PAS).

A third embodiment of the interface of the wireless power transmission apparatus according to the present invention includes: a transmission module that transmits power and is installed outside the vehicle; A power receiving module that receives power from the power transmitting module and is installed in a vehicle; A user interface module that controls the position of the vehicle, the power transmission module, and the power receiving module to transmit power from the power transmission module to the power receiving module; Matching the transmission coil and the reception coil by moving the vehicle using the location information of the transmission coil connected to the transmission module to transmit power and the location information of the reception coil connected to the power reception module to receive power Matching auxiliary module; And a display device displaying a charging progress state by the wireless power transmission device. It may be characterized by including.

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

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

ID
data
Cycle data Status value
(example)
FROM
TO
Contents BYTE BIT
XX7 CF_RXWPT_RdyForOBC
100 ms 0 0 One Repair module User interface module Receiving 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 by status 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 The information transmitted from the interface module to the power receiving module may be characterized by following the communication protocol according to the following table.

ID
data
Cycle
data Status value
(example)

FROM
TO
Contents BYTE BIT


XX8 CF_Navi_Rdy

100 ms

0 0 One

User interface module

Faucet module





Navigator ready CF_Navi_ChgStart One One Charging start button CF_Navi_ChgFinished 2 One Charging complete button CF_Navi_PAS_LocMatch_Start 3 One Start PAS position calibration CF_Navi_PAS_LocMatch_End 4 One PAS position correction complete 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 be characterized by 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 by following the communication protocol according to the following table.

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


XX9 CF_RXWPT_RdyForOBC

100 ms

0 0 One

Faucet module

Matching auxiliary module Receiving 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
(rear) 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 by status information of the matching auxiliary module, charging progress status information, vehicle position-related commands and information, and vehicle movement progress status information. Data transmitted from the matching auxiliary module to the power receiving module may be characterized by following a communication protocol according to the following table.

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


XXA CF_PAS_Rdy

100 ms

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 moving coordinate information CF_PAS_LocMatch_Start 4 One Vehicle start moving CF_PAS_LocMatch_End 5 One Vehicle moving stop

In addition, the information transmitted from the power receiving module to the display device may be characterized by 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 It can be characterized by following the communication protocol according to the following table.

ID
data
Cycle data Status value
(example)
FROM
TO
Contents BYTE BIT
XXB CF_RXWPT_Charging 100 ms
0
0 One Faucet module Display Charging indicator CF_RXWPT_Finish One One Charging complete indication

At this time, 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 module information related commands, power transmission It can be characterized as being 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 by 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 performing wireless power transmission.

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

In this case, the matching auxiliary module may be characterized in that the vehicle is automatically moved such that the positions of the transmitting coil and the receiving coil match each other.

In addition, the matching assistance module may be characterized in that it is a parking assistance system (PAS).

Further, the display device may be characterized in that it is a cluster.

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

Further, in the coil matching step, the matching auxiliary module matches the transmission coil and the reception coil by moving the vehicle using the location information of the transmission coil and the location information of the reception coil, or the user interface module The position of the transmitting coil and the position of the receiving coil may be displayed, and the moving path of the vehicle in which the receiving coil is installed may be guided so that the transmitting coil and the receiving coil match each other.

In addition, in the coil matching step, the location 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, the matching auxiliary module receiving module status confirmation step of receiving the status information of the receiving module from the 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 determining 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 where the transmitting coil and the receiving coil are matched; And a matching completion step of stopping movement of the vehicle when the location of the vehicle is a location where the transmission coil and the reception coil match. It may include.

In addition, in the matching position determination step, when the position of the vehicle is not a position where the transmitting coil and the receiving coil are matched, the vehicle moving step may be performed again.

In addition, prior to the charging start step, the charging power setting step in which the user interface module receives charging power or charging time for the vehicle; It may be characterized in that it further comprises.

In addition, in the charging completion step, the user interface module may be characterized by receiving a request to complete charging of the vehicle.

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

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

It should be noted that the technical terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. In addition, technical terms used in this specification should be interpreted as meanings generally understood by those of ordinary skill in the art disclosed in this specification, unless defined otherwise. Or should not be interpreted as an excessively reduced meaning. In addition, the accompanying drawings are only for ease of understanding the spirit of the technology disclosed in the present specification, and the spirit of the technology is not limited by the accompanying drawings, and is included in the spirit and the technical scope of the technology disclosed in the present specification It should be understood to include all alterations, equivalents, or replacements that are made.

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

4 is a block diagram showing a first embodiment of an interface of a wireless power transmission apparatus according to the present invention, and FIG. 7 is a block showing data transmission and 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.

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

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

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

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

More specifically, the user interface module 110 is connected to the transmission module, the location of the transmission coil 21 for transmitting power and the location of the receiving coil 22 connected to the power receiving module to receive power. By displaying and guiding the vehicle moving path, a user can operate the vehicle to match the transmitting coil and the receiving coil. That is, the user interface module 110 may guide the user to move the vehicle so that the receiving coil 22 matches 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. In addition, the user interface module 110 may provide an initial screen for selecting charging by wireless power transmission and an execution screen for performing wireless power transmission.

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

Particularly, the user interface module 110 is capable of data communication so that a user can control the power receiving module 30 to charge a vehicle or a high voltage battery vehicle requiring electric charging. At this time, the user interface module 110 receives the charging status or charging progress status information such as the receiving module status information, the charging amount/charging time/charging power information, and the charging related command/response from the receiving module 30 can do. In addition, the user interface module 110 transmits a command or response, such as status information of the user interface module, 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 protocols shown in Tables 22 to 23.

ID
data
Cycle data Status value
(example)
FROM
TO
Contents BYTE BIT
XX7 CF_RXWPT_RdyForOBC
100 ms 0 0 One Repair module User interface module Receiving 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 that the power receiving module 30 transmits to the user interface module 110, and is data related to state information of the power receiving module, charging related state information, and the like.

ID
data
Cycle
data Status value
(example)

FROM
TO
Contents BYTE BIT


XX8 CF_Navi_Rdy

100 ms

0 0 One

User interface module

Faucet module





Navigator ready CF_Navi_ChgStart One One Charging start button CF_Navi_ChgFinished 2 One Charging complete button CF_Navi_PAS_LocMatch_Start 3 One Start PAS position calibration CF_Navi_PAS_LocMatch_End 4 One PAS position correction complete 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 receiving module 30, charging progress information of the user interface module, charging related commands, operation progress information of the matching auxiliary module, charging time and power setting information It is data about the back. When the interface of the wireless power transmission apparatus according to the present invention includes only the user interface module 110, data related to the parking assistant system (PAS) corresponding to the matching auxiliary module 120 in the XX8 is not used. Or it can be deleted. On the other hand, when the wireless power transmission 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 the conventional communication protocols. In addition, among the communication protocols according to the present invention, data provided by the power receiving module 30 to the power transmitting module follows Tables 5 to 8 in the same manner as the conventional communication protocol. In addition, among the communication protocols according to the present invention, data provided by the power receiving module 30 and the battery management system (BMS) 40 mutually follow Tables 9 to 10 in the same manner in terms of the conventional communication protocols and contents. However, in order to easily classify a counterpart module in data communication with the power receiving module 30, the data IDs XX5 and XX1 provided by the power receiving module 30 and the battery management system (BMS) 40 are mutually provided. Change to XX5 and XX6. Here, the information transmitted from the power transmission module 10 to the power receiving 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 receiving module information and information of a power transmitting 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 detail with reference to the accompanying drawings.

5 is a block diagram showing a second embodiment of an interface of a wireless power transmission apparatus according to the present invention, and FIG. 7 is a block showing data transmission and 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.

5 and 7, the second embodiment of the interface of the wireless power transmission apparatus according to the present invention may include a power receiving 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 apparatus 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 this embodiment, the matching auxiliary module 120 is further included as an interface between the power receiving module 30 and the user. In the configuration of this embodiment, the same configuration as the first embodiment according to the present invention described above is indicated by the reference numeral in FIG. 4, and detailed description thereof will be omitted.

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

In addition, 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 match each other. Here, the matching auxiliary module 120 may be a device capable of data communication with the power receiving module 30 while being able to control the movement of the vehicle, particularly a parking assistant system (PAS). Can be.

In particular, the matching auxiliary module 120 may receive a command/response such as power receiving module status information, charging-related status information, vehicle location-related information, or vehicle moving coordinate information from the power receiving module 30. In addition, the matching auxiliary module 120 transmits a command/response such as matching auxiliary module state related information, charging related state information, vehicle location related state information, and vehicle movement progress state information to the power receiving module 30. Can be.

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

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


XX9 CF_RXWPT_RdyForOBC

100 ms

0 0 One

Faucet module

PAS Receiving 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
(rear) 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 regarding state information of the power receiving module, charging progress state information, vehicle position moving coordinate information, check information when moving the vehicle, and the like.

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


XXA CF_PAS_Rdy

100 ms

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 moving coordinate information CF_PAS_LocMatch_Start 4 One Vehicle start moving CF_PAS_LocMatch_End 5 One Vehicle moving stop

Here, XXA is information transmitted by the matching auxiliary module 120, and is data related to state information of the matching auxiliary module, charging progress state information, vehicle movement coordinate information request, and vehicle movement progress status information. 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 vehicle wireless power transmission apparatus according to the present invention described above, a detailed description will be omitted.

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

6 is a block diagram showing a third embodiment of an interface of a wireless power transmission apparatus according to the present invention, and FIG. 7 is a block diagram showing data transmission and 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.

6 and 7, the third embodiment of the interface of the wireless power transmission apparatus according to the present invention includes a power receiving module 30, a user interface module 110, a matching auxiliary module 120 and a display device 130 It may include. Particularly, in the third embodiment of the interface of the wireless power transmission apparatus 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) is different. In the configuration of the present embodiment, the same configuration as in the second embodiment according to the present invention described above is indicated by the reference numeral in FIG. 5 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, and may be a cluster.

Particularly, when charging is started by the user interface module 110, the display device 130 may display a charge amount, a charging progress state, and whether charging is completed by the wireless power transmission device. At this time, the display device 130 may receive charging status or charging progress information, etc. from the power receiving module 30, and a part of the function of the user interface module 110, for example, start/charge charging Command/response such as time setting/charging amount setting/charging power setting charging, etc. can be transmitted.

More specifically, the display device 130 may perform data communication according to the communication protocol of the power receiving module 30 and Table 26.

ID
data
Cycle data Status value
(example)
FROM
TO
Contents BYTE BIT
XXB CF_RXWPT_Charging 100 ms
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 information. In addition, if 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 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 apparatus for a vehicle according to the present invention described above, and detailed description thereof will be omitted.

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

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

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

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 can 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 described below may be performed. 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.

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 assistance module 120 uses the position of the transmission coil 21 installed on the ground and the position of the receiving coil 22 installed on the vehicle to determine the vehicle 60 By moving ), 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 location of the transmitting coil 21 and the location of the receiving coil 22 and guides the vehicle moving path, so that the user It may be operated to match the transmitting coil 21 and the receiving coil 22. Here, the location of the transmission coil 21 may be automatically input by the matching auxiliary module 120 or 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.

More specifically, in the coil matching step (S200), the power receiving module status checking step (S210), the vehicle location checking step (S220), the vehicle moving step (S230), the matching position determining step (S240) and the matching completion step ( S250). Here, in the receiving module status check step (S210), the vehicle position check step (S220), the vehicle moving step (S230), the matching position determination step (S240) and the matching completion step (S250), in Tables 22 to 25 Data communication can be performed according to the communication protocols XX7, XX8, XX9, and XXA.

In the receiving module status checking step (S210 ), the matching auxiliary module 120 receives status information of the receiving module from the receiving module 30. That is, in the receiving module state checking step (S210), it is possible to check the charging preparation state of the receiving module 30.

In the vehicle positioning step (S220 ), the matching auxiliary module 120 receives the location of the vehicle from the power receiving module 30. More specifically, in the vehicle positioning step (S220), the matching auxiliary module 120 receives the position 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 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 location of the transmitting coil 21 and the location of the receiving coil 22 and guides the vehicle moving path, so that the user You should be able to move the vehicle. Here, the location of the transmission coil 21 may be automatically input by the matching auxiliary module 120 or 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, so that the position of the vehicle 60 is 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 compares the position of the transmission coil 10 installed outside the vehicle and the position of the receiving coil 30 installed in the moving vehicle. By doing so, it is possible to determine whether the transmission coil 10 and the reception coil 30 match or not. Further, in the matching position determination step (S240), the position of the receiving coil 30 installed in the moving vehicle according to the position of the transmission coil 10 and the vehicle movement path guidance of the user interface module 110 is compared to the It is also possible to determine whether or not the transmission coil 10 and the reception coil 30 match. In the matching position determination step (S240), the matching position determination may be determined based on whether the transmission coil 10 and the reception coil 30 match and the matching degree, in particular, the transmission coil 10 and The receiving coil 30 may be based on a condition that matches 90% or more.

In the matching completion step (S250), when the position of the vehicle 60 is a 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 transmission coil 21 and the reception coil 22 are matched, the vehicle can be stopped to charge the vehicle 60.

In the charging power setting step (S300), the user interface module 110 receives charging power or charging time for the vehicle. That is, in the charging power setting step (S300), the user can input a charging amount for charging the vehicle, that is, charging power and charging time through the user interface module 110. The charging power setting step (S300) may not be performed as necessary, 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.

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. In addition, in the charging completion step (S500), the user interface module 110 may receive a request to complete charging of the vehicle. That is, in the charging completion step (S500), the user can arbitrarily input charging completion for the vehicle through the user interface module 110. Therefore, the user can complete 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 can be performed according to the communication protocol XXB in Table 26. In addition, 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 as necessary.

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

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

Claims (11)

In the power transmission device installed in the vehicle for charging the vehicle,
A user interface module for inputting a set charging time;
A display device displaying a user interface for inputting a request to start charging; And
When the preset charging time is input from the user interface module, a charging start command for charging the vehicle is transmitted to the power transmission module installed outside the vehicle at the preset charging time, and the charging starts from the display device And a power receiving module that transmits the charging start command to the power transmitting module before the preset charging time when a request is input.
The receiving module,
In order to start charging of the vehicle, communication state setting information, information indicating a standby state of the power transmission module and information indicating a normal state of the power transmission module are received from the power transmission module,
The information indicating the charging start possible state and the status value of the power receiving module are transmitted to the power transmitting module,
The display device,
A power transmission device that displays charging progress status information including the remaining time compared to full load and status information of the power transmission module and the power reception module. In claim 1,
The display device,
And display the user interface for inputting a request to stop charging,
The receiving module,
When the charging stop request is input from the display device, a power transmission device that transmits a charging stop command for stopping charging of the vehicle during charging of the vehicle according to the preset charging time. In claim 1,
The receiving module,
A power transmission device that receives power from the power transmission module based on a constant current value or a constant voltage value according to a charging mode. In claim 1,
The receiving module,
A power transmission device that transmits a vehicle identification number to the power transmission module to start charging the vehicle. In claim 1,
The receiving module,
The charger number of the charger installed outside the vehicle is received from the transmission module,
Power transmission device for transmitting a charger number confirmation message for the charger number to the transmission module. In claim 1,
The user interface displayed by the display device,
A power transmission device that is a charging start button for inputting the charging start request. In the power transmission device in the vehicle,
A display device for setting a charging time according to a user input;
A button for instructing to start and stop charging according to user operation; And
And a power receiving module that generates a first command based on the set charging time and a second command based on the start or stop charging, and transmits the generated first and second commands to a power transmission module installed outside the vehicle. ,
The receiving module,
While the vehicle is charging based on the first command, the power transmission device that requests the power transmission module to stop charging based on the second command. In claim 7,
The receiving module,
The power transmission device, while receiving power from the power transmission module, stops receiving power from the power transmission module by transmitting the second command to the power transmission module. In claim 7,
The display device,
A power transmission device that displays a user interface for setting the charging time. In claim 7,
The display device,
A power transmission device that displays charging progress status information according to the first and second commands, status information of the power transmission module, and status information of the power reception module. In claim 7,
The receiving module,
A power transmission device that receives power from the power transmission module based on a constant current value or a constant voltage value according to a charging mode.

Images