KR20230106831A - Wireless Communication Module - Google Patents

Abstract

A wireless communication module according to an embodiment of the present invention is disposed on a first area of a substrate and connected to a second area of the substrate, wherein the wireless communication module includes a first antenna unit and the second antenna. a power supply unit connected to the second area of the board; a first radiation unit connected to the power supply unit; a second radiation part extending from the first radiation part; and a ground portion connected to the second radiation portion and the second region of the substrate, wherein the first antenna portion and the second antenna portion are spaced apart from each other.

Description

Wireless communication module {Wireless Communication Module}

The present invention relates to a wireless communication module, and more particularly, to a wireless communication module that improves communication performance through antenna arrangement of the wireless communication module.

Eco-friendly vehicles such as electric vehicles (EVs) or plug-in hybrid electric vehicles (PHEVs) use electric vehicle supply equipment (EVSE) installed at charging stations to charge batteries. .

Several protocols are being actively rewritten for the interaction between electric vehicles and EVSE. Regulations related to electric vehicle charging can be largely classified into charging systems, charging interfaces, communication protocols, and the like.

However, since each country or automobile company adopts different regulations, an electric vehicle charging device, battery pack, and battery management system (BMS) must be developed and designed according to regulations.

In designing a vehicle charging system, when charging an electric vehicle, when a power line for slow charging, rapid charging, communication supply, and a communication line for communication progress are included, there is a problem in that the wire becomes thick and the cost increases. In addition, there is a problem of installing a kiosk around a parking space to charge an electric vehicle, and a problem of charging only at the location where the kiosk is installed. In addition, there is a disadvantage that only a predetermined charging rate can be provided when the kiosk is installed.

A technical problem to be solved by the present invention is to provide a wireless communication module that improves communication performance through antenna arrangement of the wireless communication module.

In order to solve the above technical problem, a wireless communication module according to an embodiment of the present invention is disposed in a first area of a board and connected to a second area of the board, wherein the wireless communication module is a power supply unit including a first antenna unit and the second antenna unit, wherein the second antenna unit includes a Wi-Fi module, and wherein the first antenna unit is connected to the second area of the substrate; a first radiation unit connected to the power supply unit; a second radiation part extending from the first radiation part; and a ground portion connected to the second radiation portion and the second region of the substrate, wherein the first antenna portion and the second antenna portion are spaced apart from each other.

A distance between the first antenna unit and the second antenna unit may be equal to or greater than 1/2 of a wavelength of a signal transmitted and received by the first antenna unit and equal to or less than 1 value.

The first radiation part includes a first radiation pattern connected to the power supply part and a second radiation pattern perpendicular to the first radiation pattern, and the second radiation part includes a third radiation pattern connected to the ground part and the second radiation pattern. A fourth radiation pattern perpendicular to the third radiation pattern may be included.

A distance between the first radiation pattern of the first antenna unit and the first antenna unit may be formed to be greater than or equal to 2.7 mm and less than or equal to 5.4 mm.

An electric vehicle communication controller (EVCC) may be disposed in the second area of the substrate.

In order to solve the above technical problem, a wireless communication control device according to an embodiment of the present invention includes a substrate including a first area and a second area; a wireless communication module disposed on the first area of the substrate; and an EVCC disposed in a second area of the board, wherein the wireless communication module includes a first antenna unit and a second antenna unit, the second antenna unit includes a Wi-Fi module, and the first antenna unit and the second antenna unit include a Wi-Fi module. The distance between the second antenna units may be equal to or greater than 1/2 of a wavelength of a signal transmitted from the second antenna unit and equal to or less than 1 value.

The first antenna unit includes a power supply unit connected to the second region of the substrate; a first radiation unit connected to the power supply unit; a second radiation part extending from the first radiation part; and a ground portion connected to the second radiation portion and the second region of the substrate.

The first radiation part includes a first radiation pattern connected to the power supply part and a second radiation pattern perpendicular to the first radiation pattern, and the second radiation part includes a third radiation pattern connected to the ground part and the second radiation pattern. A fourth radiation pattern perpendicular to the third radiation pattern may be included, and a distance between the first radiation pattern of the first antenna unit and the second antenna unit may be formed to be 2.7 mm or more and 5.4 mm or less.

According to embodiments of the present invention, direct/indirect effects due to separation of power lines and communication lines can be minimized, and communication failure can be prevented when high power is used.

In addition, a wireless environment can be created through a high-performance antenna, and location restrictions can be minimized through coverage expansion.

In addition, a high-performance antenna with excellent passive performance can be developed by selecting and arranging the antenna at a location that minimizes the influence on the Wi-Fi module and the EVCC module.

In addition, it is possible to charge and pay with EVSE's Wi-Fi zone or personal mobile terminal or vehicle without restrictions on the place where the vehicle charging kiosk is installed.

In addition, since a separate kiosk installation is not required, it may be possible to add an existing vehicle charging station and expand charging facilities.

1 to 3 are block diagrams of a wireless charging control device according to an embodiment of the present invention.
4 is a block diagram of a wireless charging control device according to another embodiment of the present invention.
5 is a block diagram of a wireless charging control device according to another embodiment of the present invention.
6 is a flowchart of a wireless charging control method according to an embodiment of the present invention.
7 to 9 show a wireless charging control device according to an embodiment of the present invention.
10 is a graph showing return loss according to frequency of an existing antenna unit.
11 is a graph showing return loss according to frequency of an antenna unit according to an embodiment of the present invention.

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

However, the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in a variety of different forms, and if it is within the scope of the technical idea of the present invention, one or more of the components among the embodiments can be selectively implemented. can be used in combination or substitution.

In addition, terms (including technical and scientific terms) used in this embodiment have meanings that can be generally understood by those of ordinary skill in the art to which this embodiment belongs, unless explicitly specifically defined and described. The meaning of commonly used terms, such as terms defined in a dictionary, can be interpreted in consideration of the contextual meaning of related technology.

In addition, terms used in the present embodiment are for describing the embodiments and are not intended to limit the present invention.

In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when described as "at least one (or more than one) of A and (and) B and C", A, B, and C are combined. may include one or more of all possible combinations.

In addition, in describing the components of this embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the term is not limited to the nature, order, or order of the corresponding component.

And, when a component is described as being 'connected', 'coupled', or 'connected' to another component, the component is directly 'connected', 'coupled', or 'connected' to the other component. In addition to the case, it may include cases where the component is 'connected', 'combined', or 'connected' due to another component between the component and the other component.

In addition, when it is described as being formed or disposed on the "upper (above)" or "lower (below)" of each component, "upper (above)" or "lower (below)" means that two components are directly connected to each other. It includes not only the case of being in contact, but also the case where one or more other components are formed or disposed between two components. In addition, when expressed as "upper (above)" or "lower (down)", the meaning of not only an upward direction but also a downward direction may be included based on one component.

1 to 3 are block diagrams of a wireless charging control device according to an embodiment of the present invention, FIG. 4 is a block diagram of a wireless charging control device according to another embodiment of the present invention, and FIG. It is a block diagram of a wireless charging control device according to an embodiment, and FIG. 6 is a flowchart of a wireless charging control method according to an embodiment of the present invention.

Hereinafter, a wireless charging control device 10 according to the first embodiment according to the present invention will be described.

Referring to FIG. 1 , a charging system including an electric vehicle according to a first embodiment of the present invention may include a vehicle 1 and an electric vehicle supply equipment (EVSE) 30. The vehicle 1 is an electric vehicle (EV), and may be charged from the EVSE 30 . In order for the vehicle 1 to receive charging power from the EVSE 30, a charging cable connected to the EVSE 30 may be connected to an inlet of the vehicle 1.

EVSE 30 is a facility that supplies AC or DC, and may be placed in a charging station or in a home. The EVSE 30 is not limited to a location and may be implemented to be portable. In this specification, the EVSE 30 may be mixed with a charging station (Supply), an AC charging station (AC supply), a DC charging station (DC supply), a socket-outlet, and the like.

An Electric Vehicle Communication Controller (EVCC) 20 is a component included in the vehicle 1 and may be connected to an Electronic Control Unit (ECU) 50 in the vehicle 1 . The EVCC 20 may control an in-vehicle charging signal and charging power amount.

The wireless charging control device 10 according to the first embodiment of the present invention may include a wireless communication module 11 and a control module 12.

Although the wireless charging control device 10 has been described as being a separate component from the EVCC 20, the wireless charging control device 10 is a component included in the EVCC 20 and includes the EVCC 20, the EVSE 30, and the mobile terminal. It may be a configuration for performing wireless communication with (40). The wireless charging control device 10 is a wireless communication charging control module, and the wireless charging control device 10 may include a separate control module without being controlled by a micro control unit (MCU) of the EVCC 20.

The wireless charging control device 10 may issue instructions for operating the MCU of the EVCC 20 through the control module 12 configured separately from the EVCC 20 through the signal received from the mobile terminal 40. In addition, the wireless charging control device 10 receives signals for vehicle charging and payment from the EVCC 20 and the EVSE 30 and transmits them to the mobile terminal 40, so that the user charges the vehicle through the mobile terminal 40. We can provide a service that can monitor the situation for

The wireless communication module 11 may transmit and receive signals with the EVCC 20 , the EVSE 30 and the mobile terminal 40 . The wireless communication module 11 may receive signals from the EVCC 20 , the EVSE 30 and the mobile terminal 40 and transmit the received signals to the control module 12 . In addition, the wireless communication module 11 may transmit the signal received from the control module 12 to at least one of the EVCC 20 , the EVSE 30 and the mobile terminal 40 .

The wireless communication module 11 may include a Wi-Fi module and a short-range communication module. The wireless communication module 11 may include a Wireless Personal Area Network (W-PAN), a Wireless Local Area Network (W-LAN), and the like. W-PAN may include ZigBee, Bluetooth, Ultra Wide Band (UWB), and the like, and W-LAN may include WIFI and the like. Although the wireless communication module 11 has been described as performing wireless communication, it is not particularly limited thereto, and it is natural that wired communication besides wireless communication is possible.

The control module 12 may generate control signals to the EVSE 30 and the EVCC 20 using the signals received from the mobile terminal 40 . The control module 12 may generate a control signal for charging using signals received from the EVCC 20 , the EVSE 30 and the mobile terminal 40 .

The control module 12 may generate a separate control signal without being controlled by a Micro Control Unit (MCU) of the EVCC 20 . The control module 12 of the wireless charging control device 10 may be formed independently of the control module of the EVCC 20. The control module 12 may receive a signal input by a user from the mobile terminal 40 and generate control signals for charging and billing in the EVCC 20 and the EVSE 30 .

The control module 12 may provide information on various vehicle charging states according to signals requested from the EVCC 20 , the EVSE 30 and the mobile terminal 40 . The information on the charging state of the vehicle may include various types of information.

For example, the charging state information may include information about a charging mode, battery charging reservation, battery charging start/end, charging error, charging control, charging current, voltage, and power. The battery state information may include information about a battery charging rate, battery temperature (cell internal/external temperature), voltage/current charging constant, and the like. Authentication information may include information about a vehicle ID, a user ID, an EVSE ID, and the like. Charging information may include information on power rates, charging time, load information, meter data, and charging data.

The control module 12 may generate control signals transmitted to the EVCC 20 , the EVSE 30 and the mobile terminal 40 according to the charging phase. Hereinafter, the control module 12 has been described as transmitting and receiving control signals, but signals generated by the control module 12 may be transmitted and received to each component through the wireless communication module 11.

When the vehicle 1 enters the area of the EVSE 30, the control module 12 receives the entry signal of the EVSE 30, and the EVCC 20 switches from the sleep mode to the ready mode. ) can be transmitted. When the charging gun of the EVSE 30 is mounted on the vehicle 1, the control module 12 may transmit a vehicle identification signal to the mobile terminal 40. Alternatively, when entering a charging area of the EVSE 30 where wireless charging is performed, the control module 12 may transmit a vehicle recognition signal to the mobile terminal 40 .

Thereafter, the control module 12 may transmit a charging start signal to the EVSE 30 and the EVCC 20 when receiving a signal for a vehicle charging start request from the mobile terminal 40 . The control module 12 may provide information on the charging state of the vehicle received from the EVCC 20 according to a request signal of the mobile terminal 40 or a request signal of the EVSE 30 during charging. When a problem occurs in the vehicle, battery, or EVSE during charging, the control module 12 receiving the problem occurrence signal from each component transmits a signal informing that a problem has occurred to the mobile terminal 40 and takes action therefor. can guide you

When receiving a vehicle charging completion signal from the EVCC 20, the control module 12 may transmit vehicle charging charging information and payment signals received from the EVSE 30 to the mobile terminal 40. A user may pay a vehicle charging fee through the mobile terminal 40 . Thereafter, the charging gun of the EVSE 30 is detached from the vehicle 1, and vehicle charging is completed.

Referring to FIG. 5 , the EVSE 30 may include a wireless communication module 31 to directly transmit/receive a control signal according to a vehicle charging operation with the mobile terminal 40 . Through this, the EVSE 30 can transmit and receive signals directly to the mobile terminal 40 without going through the wireless charging control device 10 included in the vehicle 1.

According to the embodiments of the present invention, direct/indirect effects due to separation of power lines and communication lines can be minimized, communication failure can be prevented when using high power, and a wireless environment can be created through a high-performance antenna. Location restrictions can be minimized through coverage expansion. In addition, it is possible to charge and pay with EVSE's Wi-Fi zone or personal mobile terminal or vehicle regardless of where the vehicle charging kiosk is installed, and it is possible to add an existing vehicle charging station and expand charging facilities as it does not require a separate kiosk installation. can

Hereinafter, with reference to FIG. 4, a wireless charging control device 10 according to the second embodiment according to the present invention will be described. The description of the first embodiment of the present invention can be applied to the second embodiment of the present invention, and redundant descriptions will be omitted.

Referring to FIG. 4, the wireless charging control device 10 according to the second embodiment of the present invention includes a first communication module 13, a second communication module 14, a third communication module 15 and a control module ( 12) may be included.

The first communication module 13 may transmit and receive signals to and from the EVSE 30 . The first communication module 13 may be performed by a protocol supporting Power Line Communication (PLC). The second communication module 14 may transmit and receive signals to and from the EVCC 20 . The second communication module 14 may be performed by a protocol supporting CAN (Controller Area Network).

The third communication module 15 can transmit and receive signals with the mobile terminal 40 . The third communication module 15 may include a Wi-Fi module and a short-range communication module. The third communication module 15 may include a Wireless Personal Area Network (W-PAN), a Wireless Local Area Network (W-LAN), and the like. W-PAN may include ZigBee, Bluetooth, Ultra Wide Band (UWB), and the like, and W-LAN may include WIFI and the like. The third communication module 15 may have a configuration corresponding to the wireless communication module 11 included in the first embodiment of the present invention.

The control module 12 is connected to the first to third communication modules 13, 14, and 15 and sends a control signal to the EVCC 20 and the EVSE 30 using a signal received from the third communication module 15. can create More specifically, the control module 12 generates a charging control signal using signals from the EVCC 20, the EVSE 30, and the mobile terminal 40, and the generated charging control signal is the EVCC 20, the EVSE ( 30) and the first to third communication modules 13, 14 and 15 respectively connected to the mobile terminal 40. The control module 12 may be formed independently of the control module of the EVCC 20 .

6 is a flowchart of a wireless charging control method according to an embodiment of the present invention. The detailed description of each step of FIG. 6 corresponds to the detailed description of the wireless charging control device of FIGS. 1 to 5, and thus, redundant description will be omitted.

In the wireless charging control device for controlling vehicle charging by transmitting and receiving signals to and from EVSE, EVCC, and mobile terminal, when a vehicle entry signal is received from EVSE in step S11, EVCC transmits a signal to switch from sleep mode to ready mode, S12 In step S13, when the EVSE charging gun is mounted on the vehicle, a vehicle recognition signal is transmitted to the mobile terminal and a signal is transmitted so that the EVCC switches from the ready mode to the charging mode. When the vehicle charging completion signal is received from the EVCC in step S14, the vehicle charging payment signal is transmitted to the EVSE and the mobile terminal. The signal for the charging state of the vehicle may include at least one of a charging speed, a charging charge, a charging amount, and a remaining charging time.

7 to 9 show a wireless communication module according to an embodiment of the present invention, FIG. 10 shows a performance graph according to frequency of an existing antenna unit, and FIG. 11 is an antenna unit according to an embodiment of the present invention. It shows a performance graph according to frequency.

The wireless communication module 11 according to an embodiment of the present invention may include a first antenna unit 100 and a second antenna unit 200 disposed on a board 1000 .

The wireless communication module 11 may be disposed in the first area 1100 of the substrate 1000, and the EVCC 20 may be disposed in the second area 1200 of the substrate 1000. The wireless communication module 11 may be disposed at an edge, which is an area to minimize EMC generated from circuits of the board 1000 .

The wireless communication module 11 may include a first antenna unit 100 and a second antenna unit 200 .

The first antenna unit 100 may include a short-range communication module. The first antenna unit 100 may include a Bluetooth antenna. The second antenna unit 200 may include a WiFi module. A shield can be disposed on the top of the second antenna unit 200 . A cover may be disposed on the top of the second antenna unit 200 .

The first antenna unit 100 may be spaced apart from the second antenna unit 200 by a predetermined distance to minimize the effect of parasitic capacitance caused by the shield can of the second antenna unit 200 that affects antenna performance. Through this, even if the Wi-Fi and Bluetooth antennas, which are subminiature modules, are adjacent to each other, signal interference between them can be minimized, and a wireless Wi-Fi transmission rate can be secured when operating simultaneously with Bluetooth.

In the first antenna unit 100, a plurality of radiation units having various frequency bands may be formed in one antenna module for various communications. In particular, for short-range communication, a radiator for Wi-Fi, Bluetooth, GPS, and NFC may be required.

The first antenna unit 100 includes a power supply unit 110 connected to the second area 1200 of the substrate 1000, a first radiation unit 130 connected to the power supply unit 110, and a first radiation unit 130. ) and a ground portion 120 connected to the second region 1200 of the substrate 1000 and the second radiation portion 140 extending from the substrate 1000. Current is applied to the first antenna unit 100 through the power supply unit 110, and according to the current applied through the power supply unit 110, the first radiation unit 130 and the second radiation unit 140 are respectively predetermined. A signal having a frequency band of is radiated to the outside. At this time, the phases of signals emitted through respective radiation patterns constituting the first radiation unit 130 and the second radiation unit 140 are different.

The first antenna unit 100 may be a PIFA antenna. PIFA (Planar Inverted F Antenna) is a planar inverted F antenna, which means a planar antenna in which a square patch plate with a smaller area is placed on the ground plane of the flat surface as if F is turned upside down. It can be composed of a ground plane, a radiation patch, a power supply part, and a shorting part (shorting pin or shorting strip). The PIFA antenna serves as a radiating element as the patch resonates with the ground plane by current supply, and the bandwidth, gain, resonance frequency, etc. .

The first radiation part 130 includes a first radiation pattern 130-1 connected to the power supply part 110 and a second radiation pattern 130-2 perpendicular to the first radiation pattern 130-1. can do. The second radiation part 140 includes a third radiation pattern 140-1 connected to the ground part 120 and a fourth radiation pattern 140-2 perpendicular to the third radiation pattern 140-1. can do. Each radiation unit may be formed in various shapes and may vary depending on the design of the radiation unit.

The first radiating unit 130 and the second radiating unit 140 may be a radiating unit for Wi-Fi or a radiating unit for Bluetooth. Alternatively, it may be radiation for other communication, such as a radiator for NFC. The first radiation part 130 and the second radiation part 140 may be radiation parts for different purposes or may be radiation parts for the same purpose. The width of the first radiation part 130 may be larger than that of the second radiation part 140 . The first radiation unit 130 may cause resonance in a frequency band of 5.0 to 5.2 GHz. The second radiation unit 140 may cause resonance in a frequency band of 2.4 to 2.5 GHz.

The first antenna unit 100 and the second antenna unit 200 may be spaced apart from each other. The distance between the first antenna unit 100 and the second antenna unit 200 may be formed to be equal to or greater than 1/2 of a wavelength of a signal transmitted and received by the first antenna unit 100 and equal to or less than 1 value. When the first antenna unit 100 uses a frequency of 5.5 GHz, a value of 1/2 of the wavelength may be about 2.7 mm. The distance between the first antenna unit 100 and the second antenna unit 200 may be formed to be 2.7 mm or more and 5.4 mm or less.

The distance between the first radiation pattern 130-1 of the first antenna unit 100 and the second antenna unit 200 is equal to or greater than 1/2 of the wavelength of a signal transmitted and received by the first antenna unit 100 and equal to or less than 1 value. can be formed as When the first antenna unit 100 uses a frequency of 5.5 GHz, a value of 1/2 of the wavelength may be about 2.7 mm. The distance G between the first radiation pattern 130-1 of the first antenna unit 100 and the second antenna unit 200 may be formed to be 2.7 mm or more and 5.4 mm or less.

Referring to FIG. 9 , the length B of the first radiation pattern 130-1 of the first antenna unit 100 may be between 11 mm and 12 mm or about 11.5 mm. The length A of the second radiation pattern 130-2 may be formed to be 7.5 mm or more and 8.5 mm or less, and may be formed to about 8 mm. The length F of the third radiation pattern 140-1 may be formed to be 4 mm or more and 5 mm or less, and may be formed to be about 4.5 mm. The length D of the fourth radiation pattern 140-2 may be formed to be 7 mm or more and 8 mm or less, and may be formed to be about 7.5 mm. The distance E between the first radiation pattern 130-1 and the third radiation pattern 140-1 may be formed to be 2.5 mm or more and 3.5 mm or less, and may be formed to be about 3 mm. The distance C between the third radiation pattern 140 - 1 and the second area 1200 of the substrate 1000 may be formed to be 6 mm or more and 7.5 mm or less, and may be formed to be about 6.8 mm. It goes without saying that the shape of the first antenna unit 100 shown in FIG. 9 and the length and spacing of each radiating unit may vary depending on the characteristics of the antenna.

FIG. 10 is a graph showing return loss according to frequency of the conventional first antenna unit, and FIG. 11 is a graph showing return loss according to frequency of the first antenna unit according to an embodiment of the present invention. The difference between the first antenna unit and the second antenna unit according to the embodiment of the present invention is only the interval.

Comparing FIG. 10 with FIG. 11, the conventional first antenna unit has a reflection coefficient of about -26dB in a frequency range of 2.4 to 2.48GHz and a reflection coefficient of about -10dB in a frequency range of 5.15 to 5.83GHz. The second antenna unit according to the embodiment of the present invention has a reflection coefficient of about -29 dB in a frequency range of 2.4 to 2.48 GHz and a reflection coefficient of about -13 dB in a frequency range of 5.15 to 5.83 GHz. That is, through FIGS. 10 and 11 , it can be seen that the first antenna unit according to the embodiment of the present invention is spaced apart from the Wi-Fi module, which is the second antenna unit, by a predetermined interval compared to the existing first antenna unit, so that the antenna performance is improved.

A wireless environment can be created through a high-performance antenna included in a wireless communication module according to an embodiment of the present invention, and location restrictions can be minimized through coverage expansion. In addition, a high-performance antenna with excellent passive performance can be developed by selecting and arranging the antenna at a location that minimizes the influence on the Wi-Fi module and the EVCC module.

Those skilled in the art related to this embodiment will be able to understand that it can be implemented in a modified form within a range that does not deviate from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a limiting sense. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent scope will be construed as being included in the present invention.

Claims (8)

A wireless communication module disposed in a first area of a substrate and connected to a second area of the substrate,
The wireless communication module includes a first antenna unit and the second antenna unit,
The second antenna unit includes a Wi-Fi module,
The first antenna part
a power supply unit connected to the second region of the substrate;
a first radiation unit connected to the power supply unit;
a second radiation part extending from the first radiation part; and
A ground portion connected to the second radiation portion and the second region of the substrate;
The wireless communication module of claim 1 , wherein the first antenna unit and the second antenna unit are spaced apart from each other. According to claim 1,
The wireless communication module of claim 1 , wherein a distance between the first antenna unit and the second antenna unit is equal to or greater than 1/2 of a wavelength of a signal transmitted and received by the first antenna unit and equal to or less than 1 value. According to claim 1,
The first radiation part includes a first radiation pattern connected to the power supply part and a second radiation pattern perpendicular to the first radiation pattern,
The second radiation unit includes a third radiation pattern connected to the ground unit and a fourth radiation pattern perpendicular to the third radiation pattern. According to claim 3,
The wireless communication module of claim 1 , wherein a distance between the first radiation pattern of the first antenna unit and the first antenna unit is 2.7 mm or more and 5.4 mm or less. According to claim 1,
The second area of the substrate is a wireless communication module in which an electric vehicle communication controller (EVCC) is disposed. a substrate including a first region and a second region;
a wireless communication module disposed on the first area of the substrate; and
An EVCC disposed in a second region of the substrate;
The wireless communication module includes a first antenna unit and a second antenna unit,
The second antenna unit includes a Wi-Fi module,
The wireless communication control device of claim 1 , wherein a distance between the first antenna unit and the second antenna unit is equal to or greater than 1/2 and equal to or less than 1 value of a wavelength of a signal transmitted from the second antenna unit. According to claim 6,
The first antenna part
a power supply unit connected to the second region of the substrate;
a first radiation unit connected to the power supply unit;
a second radiation part extending from the first radiation part; and
A wireless charging control device comprising a grounding portion connected to the second radiation portion and the second region of the substrate. According to claim 7,
The first radiation part includes a first radiation pattern connected to the power supply part and a second radiation pattern perpendicular to the first radiation pattern,
The second radiation part includes a third radiation pattern connected to the ground part and a fourth radiation pattern perpendicular to the third radiation pattern,
The wireless charging control device wherein the distance between the first radiation pattern of the first antenna unit and the second antenna unit is formed to be 2.7 mm or more and 5.4 mm or less.

Images